1 /***************************************************************************
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2 * Copyright (C) 2006 by Dominic Rath *
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3 * Dominic.Rath@gmx.de *
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5 * This program is free software; you can redistribute it and/or modify *
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6 * it under the terms of the GNU General Public License as published by *
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7 * the Free Software Foundation; either version 2 of the License, or *
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8 * (at your option) any later version. *
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10 * This program is distributed in the hope that it will be useful, *
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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13 * GNU General Public License for more details. *
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15 * You should have received a copy of the GNU General Public License *
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16 * along with this program; if not, write to the *
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17 * Free Software Foundation, Inc., *
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18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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19 ***************************************************************************/
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20 #ifdef HAVE_CONFIG_H
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24 #include "replacements.h"
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29 #define _DEBUG_GW16012_IO_
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32 /* system includes */
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33 // -ino: 060521-1036
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34 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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36 #include <sys/types.h>
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37 #include <machine/sysarch.h>
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38 #include <machine/cpufunc.h>
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39 #define ioperm(startport,length,enable)\
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40 i386_set_ioperm((startport), (length), (enable))
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48 #endif /* __FreeBSD__, __FreeBSD_kernel__ */
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53 #include <sys/time.h>
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56 #if PARPORT_USE_PPDEV == 1
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57 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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58 #include <dev/ppbus/ppi.h>
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59 #include <dev/ppbus/ppbconf.h>
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60 #define PPRSTATUS PPIGSTATUS
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61 #define PPWDATA PPISDATA
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63 #include <linux/parport.h>
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64 #include <linux/ppdev.h>
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67 #include <sys/ioctl.h>
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68 #else /* not PARPORT_USE_PPDEV */
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74 #if PARPORT_USE_GIVEIO == 1
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76 #include <windows.h>
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87 /* interface variables
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89 static u8 gw16012_msb = 0x0;
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90 static u8 gw16012_control_value = 0x0;
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92 #if PARPORT_USE_PPDEV == 1
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93 static int device_handle;
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96 int gw16012_execute_queue(void);
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97 int gw16012_register_commands(struct command_context_s *cmd_ctx);
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98 int gw16012_speed(int speed);
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99 int gw16012_init(void);
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100 int gw16012_quit(void);
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102 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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104 jtag_interface_t gw16012_interface =
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108 .execute_queue = gw16012_execute_queue,
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110 .speed = gw16012_speed,
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111 .register_commands = gw16012_register_commands,
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112 .init = gw16012_init,
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113 .quit = gw16012_quit,
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116 int gw16012_register_commands(struct command_context_s *cmd_ctx)
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118 register_command(cmd_ctx, NULL, "parport_port", gw16012_handle_parport_port_command,
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119 COMMAND_CONFIG, NULL);
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124 void gw16012_data(u8 value)
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126 value = (value & 0x7f) | gw16012_msb;
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127 gw16012_msb ^= 0x80; /* toggle MSB */
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129 #ifdef _DEBUG_GW16012_IO_
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130 DEBUG("%2.2x", value);
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133 #if PARPORT_USE_PPDEV == 1
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134 ioctl(device_handle, PPWDATA, &value);
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136 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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137 outb(gw16012_port, value);
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139 outb(value, gw16012_port);
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144 void gw16012_control(u8 value)
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146 if (value != gw16012_control_value)
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148 gw16012_control_value = value;
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150 #ifdef _DEBUG_GW16012_IO_
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151 DEBUG("%2.2x", gw16012_control_value);
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154 #if PARPORT_USE_PPDEV == 1
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155 ioctl(device_handle, PPWCONTROL, &gw16012_control_value);
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157 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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158 outb(gw16012_port + 2, gw16012_control_value);
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160 outb(gw16012_control_value, gw16012_port + 2);
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166 void gw16012_input(u8 *value)
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168 #if PARPORT_USE_PPDEV == 1
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169 ioctl(device_handle, PPRSTATUS, value);
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171 *value = inb(gw16012_port + 1);
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174 #ifdef _DEBUG_GW16012_IO_
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175 DEBUG("%2.2x", *value);
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179 /* (1) assert or (0) deassert reset lines */
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180 void gw16012_reset(int trst, int srst)
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182 DEBUG("trst: %i, srst: %i", trst, srst);
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185 gw16012_control(0x0d);
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186 else if (trst == 1)
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187 gw16012_control(0x0c);
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190 gw16012_control(0x0a);
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191 else if (srst == 1)
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192 gw16012_control(0x0b);
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195 int gw16012_speed(int speed)
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201 void gw16012_end_state(state)
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203 if (tap_move_map[state] != -1)
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207 ERROR("BUG: %i is not a valid end state", state);
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212 void gw16012_state_move(void)
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215 u8 tms_scan = TAP_MOVE(cur_state, end_state);
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217 gw16012_control(0x0); /* single-bit mode */
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219 for (i = 0; i < 7; i++)
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221 tms = (tms_scan >> i) & 1;
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222 gw16012_data(tms << 1); /* output next TMS bit */
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225 cur_state = end_state;
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228 void gw16012_path_move(pathmove_command_t *cmd)
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230 int num_states = cmd->num_states;
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236 gw16012_control(0x0); /* single-bit mode */
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237 if (tap_transitions[cur_state].low == cmd->path[state_count])
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239 gw16012_data(0x0); /* TCK cycle with TMS low */
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241 else if (tap_transitions[cur_state].high == cmd->path[state_count])
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243 gw16012_data(0x2); /* TCK cycle with TMS high */
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247 ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
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251 cur_state = cmd->path[state_count];
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256 end_state = cur_state;
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259 void gw16012_runtest(int num_cycles)
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261 enum tap_state saved_end_state = end_state;
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264 /* only do a state_move when we're not already in RTI */
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265 if (cur_state != TAP_RTI)
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267 gw16012_end_state(TAP_RTI);
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268 gw16012_state_move();
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271 for (i = 0; i < num_cycles; i++)
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273 gw16012_control(0x0); /* single-bit mode */
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274 gw16012_data(0x0); /* TMS cycle with TMS low */
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277 gw16012_end_state(saved_end_state);
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278 if (cur_state != end_state)
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279 gw16012_state_move();
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282 void gw16012_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
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284 int bits_left = scan_size;
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286 enum tap_state saved_end_state = end_state;
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287 u8 scan_out, scan_in;
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289 /* only if we're not already in the correct Shift state */
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290 if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
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293 gw16012_end_state(TAP_SI);
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295 gw16012_end_state(TAP_SD);
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297 gw16012_state_move();
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298 gw16012_end_state(saved_end_state);
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301 while (type == SCAN_OUT && ((bits_left - 1) > 7))
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303 gw16012_control(0x2); /* seven-bit mode */
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304 scan_out = buf_get_u32(buffer, bit_count, 7);
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305 gw16012_data(scan_out);
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310 gw16012_control(0x0); /* single-bit mode */
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311 while (bits_left-- > 0)
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315 scan_out = buf_get_u32(buffer, bit_count, 1);
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317 if (bits_left == 0) /* last bit */
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319 if ((ir_scan && (end_state == TAP_SI))
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320 || (!ir_scan && (end_state == TAP_SD)))
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330 gw16012_data(scan_out | tms);
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332 if (type != SCAN_OUT)
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334 gw16012_input(&scan_in);
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335 buf_set_u32(buffer, bit_count, 1, ((scan_in & 0x08) >> 3));
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341 if (!((ir_scan && (end_state == TAP_SI)) ||
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342 (!ir_scan && (end_state == TAP_SD))))
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346 cur_state = TAP_PI;
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348 cur_state = TAP_PD;
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350 if (cur_state != end_state)
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351 gw16012_state_move();
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355 int gw16012_execute_queue(void)
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357 jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
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359 enum scan_type type;
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363 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
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364 * that wasn't handled by a caller-provided error handler
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372 case JTAG_END_STATE:
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373 #ifdef _DEBUG_JTAG_IO_
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374 DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
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376 if (cmd->cmd.end_state->end_state != -1)
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377 gw16012_end_state(cmd->cmd.end_state->end_state);
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380 #ifdef _DEBUG_JTAG_IO_
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381 DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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383 if (cmd->cmd.reset->trst == 1)
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385 cur_state = TAP_TLR;
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387 gw16012_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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390 #ifdef _DEBUG_JTAG_IO_
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391 DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
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393 if (cmd->cmd.runtest->end_state != -1)
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394 gw16012_end_state(cmd->cmd.runtest->end_state);
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395 gw16012_runtest(cmd->cmd.runtest->num_cycles);
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397 case JTAG_STATEMOVE:
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398 #ifdef _DEBUG_JTAG_IO_
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399 DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
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401 if (cmd->cmd.statemove->end_state != -1)
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402 gw16012_end_state(cmd->cmd.statemove->end_state);
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403 gw16012_state_move();
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405 case JTAG_PATHMOVE:
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406 #ifdef _DEBUG_JTAG_IO_
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407 DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
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409 gw16012_path_move(cmd->cmd.pathmove);
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412 if (cmd->cmd.scan->end_state != -1)
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413 gw16012_end_state(cmd->cmd.scan->end_state);
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414 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
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415 type = jtag_scan_type(cmd->cmd.scan);
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416 #ifdef _DEBUG_JTAG_IO_
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417 DEBUG("%s scan (%i) %i bit end in %i", (cmd->cmd.scan->ir_scan) ? "ir" : "dr",
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418 type, scan_size, cmd->cmd.scan->end_state);
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420 gw16012_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
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421 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
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422 retval = ERROR_JTAG_QUEUE_FAILED;
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427 #ifdef _DEBUG_JTAG_IO_
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428 DEBUG("sleep %i", cmd->cmd.sleep->us);
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430 jtag_sleep(cmd->cmd.sleep->us);
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433 ERROR("BUG: unknown JTAG command type encountered");
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442 #if PARPORT_USE_GIVEIO == 1
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443 int gw16012_get_giveio_access()
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446 OSVERSIONINFO version;
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448 version.dwOSVersionInfoSize = sizeof version;
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449 if (!GetVersionEx( &version )) {
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453 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
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456 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
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457 if (h == INVALID_HANDLE_VALUE) {
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468 int gw16012_init(void)
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470 #if PARPORT_USE_PPDEV == 1
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476 #if PARPORT_USE_PPDEV == 1
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477 if (device_handle>0)
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479 ERROR("device is already opened");
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480 return ERROR_JTAG_INIT_FAILED;
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483 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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484 DEBUG("opening /dev/ppi%d...", gw16012_port);
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486 snprintf(buffer, 256, "/dev/ppi%d", gw16012_port);
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487 device_handle = open(buffer, O_WRONLY);
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489 DEBUG("opening /dev/parport%d...", gw16012_port);
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491 snprintf(buffer, 256, "/dev/parport%d", gw16012_port);
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492 device_handle = open(buffer, O_WRONLY);
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494 if (device_handle<0)
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496 ERROR("cannot open device. check it exists and that user read and write rights are set");
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497 return ERROR_JTAG_INIT_FAILED;
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502 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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503 i=ioctl(device_handle, PPCLAIM);
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506 ERROR("cannot claim device");
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507 return ERROR_JTAG_INIT_FAILED;
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510 i = PARPORT_MODE_COMPAT;
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511 i= ioctl(device_handle, PPSETMODE, & i);
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514 ERROR(" cannot set compatible mode to device");
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515 return ERROR_JTAG_INIT_FAILED;
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518 i = IEEE1284_MODE_COMPAT;
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519 i = ioctl(device_handle, PPNEGOT, & i);
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522 ERROR("cannot set compatible 1284 mode to device");
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523 return ERROR_JTAG_INIT_FAILED;
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527 if (gw16012_port == 0)
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529 gw16012_port = 0x378;
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530 WARNING("No gw16012 port specified, using default '0x378' (LPT1)");
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533 DEBUG("requesting privileges for parallel port 0x%lx...", gw16012_port);
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534 #if PARPORT_USE_GIVEIO == 1
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535 if (gw16012_get_giveio_access() != 0)
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536 #else /* PARPORT_USE_GIVEIO */
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537 if (ioperm(gw16012_port, 3, 1) != 0)
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538 #endif /* PARPORT_USE_GIVEIO */
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540 ERROR("missing privileges for direct i/o");
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541 return ERROR_JTAG_INIT_FAILED;
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543 DEBUG("...privileges granted");
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545 /* make sure parallel port is in right mode (clear tristate and interrupt */
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546 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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547 outb(gw16012_port + 2, 0x0);
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549 outb(0x0, gw16012_port + 2);
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551 #endif /* PARPORT_USE_PPDEV */
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553 gw16012_input(&status_port);
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554 gw16012_msb = (status_port & 0x80) ^ 0x80;
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556 gw16012_speed(jtag_speed);
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557 gw16012_reset(0, 0);
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562 int gw16012_quit(void)
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568 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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573 /* only if the port wasn't overwritten by cmdline */
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574 if (gw16012_port == 0)
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575 gw16012_port = strtoul(args[0], NULL, 0);
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