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
55 #include <dev/ppbus/ppi.h>
56 #include <dev/ppbus/ppbconf.h>
57 #define PPRSTATUS PPIGSTATUS
58 #define PPWDATA PPISDATA
60 #include <linux/parport.h>
61 #include <linux/ppdev.h>
64 #include <sys/ioctl.h>
67 #if PARPORT_USE_GIVEIO == 1
77 /* parallel port cable description
79 typedef struct cable_s
82 u8 TDO_MASK; /* status port bit containing current TDO value */
83 u8 TRST_MASK; /* data port bit for TRST */
84 u8 TMS_MASK; /* data port bit for TMS */
85 u8 TCK_MASK; /* data port bit for TCK */
86 u8 TDI_MASK; /* data port bit for TDI */
87 u8 SRST_MASK; /* data port bit for SRST */
88 u8 OUTPUT_INVERT; /* data port bits that should be inverted */
89 u8 INPUT_INVERT; /* status port that should be inverted */
90 u8 PORT_INIT; /* initialize data port with this value */
95 /* name tdo trst tms tck tdi srst o_inv i_inv init */
96 { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80 },
97 { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80 },
98 { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 },
99 { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10 },
100 { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 },
101 { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
106 unsigned long parport_port;
108 /* interface variables
110 static cable_t* cable;
111 static u8 dataport_value = 0x0;
113 #if PARPORT_USE_PPDEV == 1
114 static int device_handle;
116 static unsigned long dataport;
117 static unsigned long statusport;
120 /* low level command set
122 int parport_read(void);
123 void parport_write(int tck, int tms, int tdi);
124 void parport_reset(int trst, int srst);
126 int parport_speed(int speed);
127 int parport_register_commands(struct command_context_s *cmd_ctx);
128 int parport_init(void);
129 int parport_quit(void);
131 /* interface commands */
132 int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
133 int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
135 jtag_interface_t parport_interface =
139 .execute_queue = bitbang_execute_queue,
141 .support_statemove = 0,
143 .speed = parport_speed,
144 .register_commands = parport_register_commands,
145 .init = parport_init,
146 .quit = parport_quit,
149 bitbang_interface_t parport_bitbang =
151 .read = parport_read,
152 .write = parport_write,
153 .reset = parport_reset
156 int parport_read(void)
160 #if PARPORT_USE_PPDEV == 1
161 ioctl(device_handle, PPRSTATUS, & data);
163 data = inb(statusport);
166 if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK)
172 void parport_write(int tck, int tms, int tdi)
175 int i = jtag_speed + 1;
178 dataport_value |= cable->TCK_MASK;
180 dataport_value &= ~cable->TCK_MASK;
183 dataport_value |= cable->TMS_MASK;
185 dataport_value &= ~cable->TMS_MASK;
188 dataport_value |= cable->TDI_MASK;
190 dataport_value &= ~cable->TDI_MASK;
192 output = dataport_value ^ cable->OUTPUT_INVERT;
195 #if PARPORT_USE_PPDEV == 1
196 ioctl(device_handle, PPWDATA, &output);
199 outb(dataport, output);
201 outb(output, dataport);
206 /* (1) assert or (0) deassert reset lines */
207 void parport_reset(int trst, int srst)
210 DEBUG("trst: %i, srst: %i", trst, srst);
213 dataport_value |= cable->TRST_MASK;
215 dataport_value &= ~cable->TRST_MASK;
218 dataport_value |= cable->SRST_MASK;
220 dataport_value &= ~cable->SRST_MASK;
222 output = dataport_value ^ cable->OUTPUT_INVERT;
224 #if PARPORT_USE_PPDEV == 1
225 ioctl(device_handle, PPWDATA, &output);
228 outb(dataport, output);
230 outb(output, dataport);
236 int parport_speed(int speed)
243 int parport_register_commands(struct command_context_s *cmd_ctx)
245 register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command,
246 COMMAND_CONFIG, NULL);
247 register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command,
248 COMMAND_CONFIG, NULL);
253 #if PARPORT_USE_GIVEIO == 1
254 int parport_get_giveio_access()
257 OSVERSIONINFO version;
259 version.dwOSVersionInfoSize = sizeof version;
260 if (!GetVersionEx( &version )) {
264 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
267 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
268 if (h == INVALID_HANDLE_VALUE) {
279 int parport_init(void)
282 #if PARPORT_USE_PPDEV == 1
289 if ((parport_cable == NULL) || (parport_cable[0] == 0))
291 parport_cable = "wiggler";
292 WARNING("No parport cable specified, using default 'wiggler'");
295 while (cur_cable->name)
297 if (strcmp(cur_cable->name, parport_cable) == 0)
307 ERROR("No matching cable found for %s", parport_cable);
308 return ERROR_JTAG_INIT_FAILED;
311 dataport_value = cable->PORT_INIT;
313 #if PARPORT_USE_PPDEV == 1
316 ERROR("device is already opened");
317 return ERROR_JTAG_INIT_FAILED;
321 DEBUG("opening /dev/ppi%d...", parport_port);
323 snprintf(buffer, 256, "/dev/ppi%d", parport_port);
324 device_handle = open(buffer, O_WRONLY);
326 DEBUG("opening /dev/parport%d...", parport_port);
328 snprintf(buffer, 256, "/dev/parport%d", parport_port);
329 device_handle = open(buffer, O_WRONLY);
333 ERROR("cannot open device. check it exists and that user read and write rights are set");
334 return ERROR_JTAG_INIT_FAILED;
340 i=ioctl(device_handle, PPCLAIM);
343 ERROR("cannot claim device");
344 return ERROR_JTAG_INIT_FAILED;
347 i = PARPORT_MODE_COMPAT;
348 i= ioctl(device_handle, PPSETMODE, & i);
351 ERROR(" cannot set compatible mode to device");
352 return ERROR_JTAG_INIT_FAILED;
355 i = IEEE1284_MODE_COMPAT;
356 i = ioctl(device_handle, PPNEGOT, & i);
359 ERROR("cannot set compatible 1284 mode to device");
360 return ERROR_JTAG_INIT_FAILED;
364 if (parport_port == 0)
366 parport_port = 0x378;
367 WARNING("No parport port specified, using default '0x378' (LPT1)");
370 dataport = parport_port;
371 statusport = parport_port + 1;
373 DEBUG("requesting privileges for parallel port 0x%x...", dataport);
374 #if PARPORT_USE_GIVEIO == 1
375 if (parport_get_giveio_access() != 0)
376 #else /* PARPORT_USE_GIVEIO */
377 if (ioperm(dataport, 3, 1) != 0)
378 #endif /* PARPORT_USE_GIVEIO */
380 ERROR("missing privileges for direct i/o");
381 return ERROR_JTAG_INIT_FAILED;
383 DEBUG("...privileges granted");
384 #endif /* PARPORT_USE_PPDEV */
387 parport_write(0, 0, 0);
389 bitbang_interface = &parport_bitbang;
394 int parport_quit(void)
400 int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
405 /* only if the port wasn't overwritten by cmdline */
406 if (parport_port == 0)
407 parport_port = strtoul(args[0], NULL, 0);
412 int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
417 /* only if the cable name wasn't overwritten by cmdline */
418 if (parport_cable == 0)
420 parport_cable = malloc(strlen(args[0]) + sizeof(char));
421 strcpy(parport_cable, args[0]);