1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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. *
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. *
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 ***************************************************************************/
24 #include "replacements.h"
33 #include <sys/types.h>
34 #include <machine/sysarch.h>
35 #include <machine/cpufunc.h>
36 #define ioperm(startport,length,enable)\
37 i386_set_ioperm((startport), (length), (enable))
47 #endif /* __FreeBSD__ */
53 #if PARPORT_USE_PPDEV == 1
54 #include <linux/parport.h>
55 #include <linux/ppdev.h>
57 #include <sys/ioctl.h>
60 #if PARPORT_USE_GIVEIO == 1
70 /* parallel port cable description
72 typedef struct cable_s
75 u8 TDO_MASK; /* status port bit containing current TDO value */
76 u8 TRST_MASK; /* data port bit for TRST */
77 u8 TMS_MASK; /* data port bit for TMS */
78 u8 TCK_MASK; /* data port bit for TCK */
79 u8 TDI_MASK; /* data port bit for TDI */
80 u8 SRST_MASK; /* data port bit for SRST */
81 u8 OUTPUT_INVERT; /* data port bits that should be inverted */
82 u8 INPUT_INVERT; /* status port that should be inverted */
83 u8 PORT_INIT; /* initialize data port with this value */
88 /* name tdo trst tms tck tdi srst o_inv i_inv init */
89 { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80 },
90 { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80 },
91 { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 },
92 { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10 },
93 { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 },
94 { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
99 unsigned long parport_port;
101 /* interface variables
103 static cable_t* cable;
104 static u8 dataport_value = 0x0;
106 #if PARPORT_USE_PPDEV == 1
107 static int device_handle;
109 static unsigned long dataport;
110 static unsigned long statusport;
113 /* low level command set
115 int parport_read(void);
116 void parport_write(int tck, int tms, int tdi);
117 void parport_reset(int trst, int srst);
119 int parport_speed(int speed);
120 int parport_register_commands(struct command_context_s *cmd_ctx);
121 int parport_init(void);
122 int parport_quit(void);
124 /* interface commands */
125 int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
126 int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
128 jtag_interface_t parport_interface =
132 .execute_queue = bitbang_execute_queue,
134 .support_statemove = 0,
136 .speed = parport_speed,
137 .register_commands = parport_register_commands,
138 .init = parport_init,
139 .quit = parport_quit,
142 bitbang_interface_t parport_bitbang =
144 .read = parport_read,
145 .write = parport_write,
146 .reset = parport_reset
149 int parport_read(void)
153 #if PARPORT_USE_PPDEV == 1
154 ioctl(device_handle, PPRSTATUS, & data);
156 data = inb(statusport);
159 if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK)
165 void parport_write(int tck, int tms, int tdi)
168 int i = jtag_speed + 1;
171 dataport_value |= cable->TCK_MASK;
173 dataport_value &= ~cable->TCK_MASK;
176 dataport_value |= cable->TMS_MASK;
178 dataport_value &= ~cable->TMS_MASK;
181 dataport_value |= cable->TDI_MASK;
183 dataport_value &= ~cable->TDI_MASK;
185 output = dataport_value ^ cable->OUTPUT_INVERT;
188 #if PARPORT_USE_PPDEV == 1
189 ioctl(device_handle, PPWDATA, &output);
192 outb(dataport, output);
194 outb(output, dataport);
199 /* (1) assert or (0) deassert reset lines */
200 void parport_reset(int trst, int srst)
203 DEBUG("trst: %i, srst: %i", trst, srst);
206 dataport_value |= cable->TRST_MASK;
208 dataport_value &= ~cable->TRST_MASK;
211 dataport_value |= cable->SRST_MASK;
213 dataport_value &= ~cable->SRST_MASK;
215 output = dataport_value ^ cable->OUTPUT_INVERT;
217 #if PARPORT_USE_PPDEV == 1
218 ioctl(device_handle, PPWDATA, &output);
221 outb(dataport, output);
223 outb(output, dataport);
229 int parport_speed(int speed)
236 int parport_register_commands(struct command_context_s *cmd_ctx)
238 register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command,
239 COMMAND_CONFIG, NULL);
240 register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command,
241 COMMAND_CONFIG, NULL);
246 #if PARPORT_USE_GIVEIO == 1
247 int parport_get_giveio_access()
250 OSVERSIONINFO version;
252 version.dwOSVersionInfoSize = sizeof version;
253 if (!GetVersionEx( &version )) {
257 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
260 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
261 if (h == INVALID_HANDLE_VALUE) {
272 int parport_init(void)
275 #if PARPORT_USE_PPDEV == 1
282 if ((parport_cable == NULL) || (parport_cable[0] == 0))
284 parport_cable = "wiggler";
285 WARNING("No parport cable specified, using default 'wiggler'");
288 while (cur_cable->name)
290 if (strcmp(cur_cable->name, parport_cable) == 0)
300 ERROR("No matching cable found for %s", parport_cable);
301 return ERROR_JTAG_INIT_FAILED;
304 dataport_value = cable->PORT_INIT;
306 #if PARPORT_USE_PPDEV == 1
309 ERROR("device is already opened");
310 return ERROR_JTAG_INIT_FAILED;
313 snprintf(buffer, 256, "/dev/parport%d", parport_port);
314 device_handle = open(buffer, O_WRONLY);
318 ERROR("cannot open device. check it exists and that user read and write rights are set");
319 return ERROR_JTAG_INIT_FAILED;
322 i=ioctl(device_handle, PPCLAIM);
325 ERROR("cannot claim device");
326 return ERROR_JTAG_INIT_FAILED;
329 i = PARPORT_MODE_COMPAT;
330 i= ioctl(device_handle, PPSETMODE, & i);
333 ERROR(" cannot set compatible mode to device");
334 return ERROR_JTAG_INIT_FAILED;
337 i = IEEE1284_MODE_COMPAT;
338 i = ioctl(device_handle, PPNEGOT, & i);
341 ERROR("cannot set compatible 1284 mode to device");
342 return ERROR_JTAG_INIT_FAILED;
345 if (parport_port == 0)
347 parport_port = 0x378;
348 WARNING("No parport port specified, using default '0x378' (LPT1)");
351 dataport = parport_port;
352 statusport = parport_port + 1;
354 #if PARPORT_USE_GIVEIO == 1
355 if (parport_get_giveio_access() != 0)
356 #else /* PARPORT_USE_GIVEIO */
357 if (ioperm(dataport, 3, 1) != 0)
358 #endif /* PARPORT_USE_GIVEIO */
360 ERROR("missing privileges for direct i/o");
361 return ERROR_JTAG_INIT_FAILED;
363 #endif /* PARPORT_USE_PPDEV */
366 parport_write(0, 0, 0);
368 bitbang_interface = &parport_bitbang;
373 int parport_quit(void)
379 int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
384 /* only if the port wasn't overwritten by cmdline */
385 if (parport_port == 0)
386 parport_port = strtoul(args[0], NULL, 0);
391 int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
396 /* only if the cable name wasn't overwritten by cmdline */
397 if (parport_cable == 0)
399 parport_cable = malloc(strlen(args[0]) + sizeof(char));
400 strcpy(parport_cable, args[0]);