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))
45 #endif /* __FreeBSD__ */
51 #if PARPORT_USE_PPDEV == 1
53 #include <dev/ppbus/ppi.h>
54 #include <dev/ppbus/ppbconf.h>
55 #define PPRSTATUS PPIGSTATUS
56 #define PPWDATA PPISDATA
58 #include <linux/parport.h>
59 #include <linux/ppdev.h>
62 #include <sys/ioctl.h>
63 #else /* not PARPORT_USE_PPDEV */
69 #if PARPORT_USE_GIVEIO == 1
79 /* parallel port cable description
81 typedef struct cable_s
84 u8 TDO_MASK; /* status port bit containing current TDO value */
85 u8 TRST_MASK; /* data port bit for TRST */
86 u8 TMS_MASK; /* data port bit for TMS */
87 u8 TCK_MASK; /* data port bit for TCK */
88 u8 TDI_MASK; /* data port bit for TDI */
89 u8 SRST_MASK; /* data port bit for SRST */
90 u8 OUTPUT_INVERT; /* data port bits that should be inverted */
91 u8 INPUT_INVERT; /* status port that should be inverted */
92 u8 PORT_INIT; /* initialize data port with this value */
97 /* name tdo trst tms tck tdi srst o_inv i_inv init */
98 { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80 },
99 { "wiggler_ntrst_inverted", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80 },
100 { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80 },
101 { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 },
102 { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10 },
103 { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 },
104 { "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18 },
105 { "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00 },
106 { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
111 unsigned long parport_port;
113 /* interface variables
115 static cable_t* cable;
116 static u8 dataport_value = 0x0;
118 #if PARPORT_USE_PPDEV == 1
119 static int device_handle;
121 static unsigned long dataport;
122 static unsigned long statusport;
125 /* low level command set
127 int parport_read(void);
128 void parport_write(int tck, int tms, int tdi);
129 void parport_reset(int trst, int srst);
131 int parport_speed(int speed);
132 int parport_register_commands(struct command_context_s *cmd_ctx);
133 int parport_init(void);
134 int parport_quit(void);
136 /* interface commands */
137 int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
138 int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
140 jtag_interface_t parport_interface =
144 .execute_queue = bitbang_execute_queue,
146 .support_pathmove = 1,
148 .speed = parport_speed,
149 .register_commands = parport_register_commands,
150 .init = parport_init,
151 .quit = parport_quit,
154 bitbang_interface_t parport_bitbang =
156 .read = parport_read,
157 .write = parport_write,
158 .reset = parport_reset
161 int parport_read(void)
165 #if PARPORT_USE_PPDEV == 1
166 ioctl(device_handle, PPRSTATUS, & data);
168 data = inb(statusport);
171 if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK)
177 void parport_write(int tck, int tms, int tdi)
180 int i = jtag_speed + 1;
183 dataport_value |= cable->TCK_MASK;
185 dataport_value &= ~cable->TCK_MASK;
188 dataport_value |= cable->TMS_MASK;
190 dataport_value &= ~cable->TMS_MASK;
193 dataport_value |= cable->TDI_MASK;
195 dataport_value &= ~cable->TDI_MASK;
197 output = dataport_value ^ cable->OUTPUT_INVERT;
200 #if PARPORT_USE_PPDEV == 1
201 ioctl(device_handle, PPWDATA, &output);
204 outb(dataport, output);
206 outb(output, dataport);
211 /* (1) assert or (0) deassert reset lines */
212 void parport_reset(int trst, int srst)
215 DEBUG("trst: %i, srst: %i", trst, srst);
218 dataport_value |= cable->TRST_MASK;
220 dataport_value &= ~cable->TRST_MASK;
223 dataport_value |= cable->SRST_MASK;
225 dataport_value &= ~cable->SRST_MASK;
227 output = dataport_value ^ cable->OUTPUT_INVERT;
229 #if PARPORT_USE_PPDEV == 1
230 ioctl(device_handle, PPWDATA, &output);
233 outb(dataport, output);
235 outb(output, dataport);
241 int parport_speed(int speed)
248 int parport_register_commands(struct command_context_s *cmd_ctx)
250 register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command,
251 COMMAND_CONFIG, NULL);
252 register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command,
253 COMMAND_CONFIG, NULL);
258 #if PARPORT_USE_GIVEIO == 1
259 int parport_get_giveio_access()
262 OSVERSIONINFO version;
264 version.dwOSVersionInfoSize = sizeof version;
265 if (!GetVersionEx( &version )) {
269 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
272 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
273 if (h == INVALID_HANDLE_VALUE) {
284 int parport_init(void)
287 #if PARPORT_USE_PPDEV == 1
294 if ((parport_cable == NULL) || (parport_cable[0] == 0))
296 parport_cable = "wiggler";
297 WARNING("No parport cable specified, using default 'wiggler'");
300 while (cur_cable->name)
302 if (strcmp(cur_cable->name, parport_cable) == 0)
312 ERROR("No matching cable found for %s", parport_cable);
313 return ERROR_JTAG_INIT_FAILED;
316 dataport_value = cable->PORT_INIT;
318 #if PARPORT_USE_PPDEV == 1
319 if (device_handle > 0)
321 ERROR("device is already opened");
322 return ERROR_JTAG_INIT_FAILED;
326 DEBUG("opening /dev/ppi%d...", parport_port);
328 snprintf(buffer, 256, "/dev/ppi%d", parport_port);
329 device_handle = open(buffer, O_WRONLY);
330 #else /* not __Free_BSD */
331 DEBUG("opening /dev/parport%d...", parport_port);
333 snprintf(buffer, 256, "/dev/parport%d", parport_port);
334 device_handle = open(buffer, O_WRONLY);
335 #endif /* __FreeBSD__ */
337 if (device_handle < 0)
339 ERROR("cannot open device. check it exists and that user read and write rights are set");
340 return ERROR_JTAG_INIT_FAILED;
346 i=ioctl(device_handle, PPCLAIM);
349 ERROR("cannot claim device");
350 return ERROR_JTAG_INIT_FAILED;
353 i = PARPORT_MODE_COMPAT;
354 i= ioctl(device_handle, PPSETMODE, & i);
357 ERROR(" cannot set compatible mode to device");
358 return ERROR_JTAG_INIT_FAILED;
361 i = IEEE1284_MODE_COMPAT;
362 i = ioctl(device_handle, PPNEGOT, & i);
365 ERROR("cannot set compatible 1284 mode to device");
366 return ERROR_JTAG_INIT_FAILED;
368 #endif /* not __Free_BSD__ */
370 #else /* not PARPORT_USE_PPDEV */
371 if (parport_port == 0)
373 parport_port = 0x378;
374 WARNING("No parport port specified, using default '0x378' (LPT1)");
377 dataport = parport_port;
378 statusport = parport_port + 1;
380 DEBUG("requesting privileges for parallel port 0x%lx...", dataport);
381 #if PARPORT_USE_GIVEIO == 1
382 if (parport_get_giveio_access() != 0)
383 #else /* PARPORT_USE_GIVEIO */
384 if (ioperm(dataport, 3, 1) != 0)
385 #endif /* PARPORT_USE_GIVEIO */
387 ERROR("missing privileges for direct i/o");
388 return ERROR_JTAG_INIT_FAILED;
390 DEBUG("...privileges granted");
392 /* make sure parallel port is in right mode (clear tristate and interrupt */
394 outb(parport_port + 2, 0x0);
396 outb(0x0, parport_port + 2);
399 #endif /* PARPORT_USE_PPDEV */
402 parport_write(0, 0, 0);
404 bitbang_interface = &parport_bitbang;
409 int parport_quit(void)
415 int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
420 /* only if the port wasn't overwritten by cmdline */
421 if (parport_port == 0)
422 parport_port = strtoul(args[0], NULL, 0);
427 int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
432 /* only if the cable name wasn't overwritten by cmdline */
433 if (parport_cable == 0)
435 parport_cable = malloc(strlen(args[0]) + sizeof(char));
436 strcpy(parport_cable, args[0]);