1 /***************************************************************************
2 * Copyright (C) 2006 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"
29 #define _DEBUG_GW16012_IO_
38 #include <sys/types.h>
39 #include <machine/sysarch.h>
40 #include <machine/cpufunc.h>
41 #define ioperm(startport,length,enable)\
42 i386_set_ioperm((startport), (length), (enable))
52 #endif /* __FreeBSD__ */
60 #if PARPORT_USE_PPDEV == 1
62 #include <dev/ppbus/ppi.h>
63 #include <dev/ppbus/ppbconf.h>
64 #define PPRSTATUS PPIGSTATUS
65 #define PPWDATA PPISDATA
67 #include <linux/parport.h>
68 #include <linux/ppdev.h>
71 #include <sys/ioctl.h>
74 #if PARPORT_USE_GIVEIO == 1
85 unsigned long gw16012_port
;
87 /* interface variables
89 static u8 gw16012_msb
= 0x0;
90 static u8 gw16012_control_value
= 0x0;
92 #if PARPORT_USE_PPDEV == 1
93 static int device_handle
;
96 int gw16012_execute_queue(void);
97 int gw16012_register_commands(struct command_context_s
*cmd_ctx
);
98 int gw16012_speed(int speed
);
99 int gw16012_init(void);
100 int gw16012_quit(void);
102 int gw16012_handle_parport_port_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
104 jtag_interface_t gw16012_interface
=
108 .execute_queue
= gw16012_execute_queue
,
110 .support_pathmove
= 0,
112 .speed
= gw16012_speed
,
113 .register_commands
= gw16012_register_commands
,
114 .init
= gw16012_init
,
115 .quit
= gw16012_quit
,
118 int gw16012_register_commands(struct command_context_s
*cmd_ctx
)
120 register_command(cmd_ctx
, NULL
, "parport_port", gw16012_handle_parport_port_command
,
121 COMMAND_CONFIG
, NULL
);
126 void gw16012_data(u8 value
)
128 value
= (value
& 0x7f) | gw16012_msb
;
129 gw16012_msb
^= 0x80; /* toggle MSB */
131 #ifdef _DEBUG_GW16012_IO_
132 DEBUG("%2.2x", value
);
135 #if PARPORT_USE_PPDEV == 1
136 ioctl(device_handle
, PPWDATA
, &value
);
139 outb(gw16012_port
, value
);
141 outb(value
, gw16012_port
);
146 void gw16012_control(u8 value
)
148 if (value
!= gw16012_control_value
)
150 gw16012_control_value
= value
;
152 #ifdef _DEBUG_GW16012_IO_
153 DEBUG("%2.2x", gw16012_control_value
);
156 #if PARPORT_USE_PPDEV == 1
157 ioctl(device_handle
, PPWCONTROL
, &gw16012_control_value
);
160 outb(gw16012_port
+ 2, gw16012_control_value
);
162 outb(gw16012_control_value
, gw16012_port
+ 2);
168 void gw16012_input(u8
*value
)
170 #if PARPORT_USE_PPDEV == 1
171 ioctl(device_handle
, PPRSTATUS
, value
);
173 *value
= inb(gw16012_port
+ 1);
176 #ifdef _DEBUG_GW16012_IO_
177 DEBUG("%2.2x", *value
);
181 /* (1) assert or (0) deassert reset lines */
182 void gw16012_reset(int trst
, int srst
)
184 DEBUG("trst: %i, srst: %i", trst
, srst
);
187 gw16012_control(0x0d);
189 gw16012_control(0x0c);
192 gw16012_control(0x0a);
194 gw16012_control(0x0b);
197 int gw16012_speed(int speed
)
203 void gw16012_end_state(state
)
205 if (tap_move_map
[state
] != -1)
209 ERROR("BUG: %i is not a valid end state", state
);
214 void gw16012_state_move(void)
217 u8 tms_scan
= TAP_MOVE(cur_state
, end_state
);
219 gw16012_control(0x0); /* single-bit mode */
221 for (i
= 0; i
< 7; i
++)
223 tms
= (tms_scan
>> i
) & 1;
224 gw16012_data(tms
<< 1); /* output next TMS bit */
227 cur_state
= end_state
;
230 void gw16012_path_move(pathmove_command_t
*cmd
)
232 int num_states
= cmd
->num_states
;
238 gw16012_control(0x0); /* single-bit mode */
239 if (tap_transitions
[cur_state
].low
== cmd
->path
[state_count
])
241 gw16012_data(0x0); /* TCK cycle with TMS low */
243 else if (tap_transitions
[cur_state
].high
== cmd
->path
[state_count
])
245 gw16012_data(0x2); /* TCK cycle with TMS high */
249 ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings
[cur_state
], tap_state_strings
[cmd
->path
[state_count
]]);
253 cur_state
= cmd
->path
[state_count
];
258 end_state
= cur_state
;
261 void gw16012_runtest(int num_cycles
)
263 enum tap_state saved_end_state
= end_state
;
266 /* only do a state_move when we're not already in RTI */
267 if (cur_state
!= TAP_RTI
)
269 gw16012_end_state(TAP_RTI
);
270 gw16012_state_move();
273 for (i
= 0; i
< num_cycles
; i
++)
275 gw16012_control(0x0); /* single-bit mode */
276 gw16012_data(0x0); /* TMS cycle with TMS low */
279 gw16012_end_state(saved_end_state
);
280 if (cur_state
!= end_state
)
281 gw16012_state_move();
284 void gw16012_scan(int ir_scan
, enum scan_type type
, u8
*buffer
, int scan_size
)
286 int bits_left
= scan_size
;
288 enum tap_state saved_end_state
= end_state
;
289 u8 scan_out
, scan_in
;
291 /* only if we're not already in the correct Shift state */
292 if (!((!ir_scan
&& (cur_state
== TAP_SD
)) || (ir_scan
&& (cur_state
== TAP_SI
))))
295 gw16012_end_state(TAP_SI
);
297 gw16012_end_state(TAP_SD
);
299 gw16012_state_move();
300 gw16012_end_state(saved_end_state
);
303 while (type
== SCAN_OUT
&& ((bits_left
- 1) > 7))
305 gw16012_control(0x2); /* seven-bit mode */
306 scan_out
= buf_get_u32(buffer
, bit_count
, 7);
307 gw16012_data(scan_out
);
312 gw16012_control(0x0); /* single-bit mode */
313 while (bits_left
-- > 0)
317 scan_out
= buf_get_u32(buffer
, bit_count
, 1);
319 if (bits_left
== 0) /* last bit */
321 if ((ir_scan
&& (end_state
== TAP_SI
))
322 || (!ir_scan
&& (end_state
== TAP_SD
)))
332 gw16012_data(scan_out
| tms
);
334 if (type
!= SCAN_OUT
)
336 gw16012_input(&scan_in
);
337 buf_set_u32(buffer
, bit_count
, 1, ((scan_in
& 0x08) >> 3));
343 if (!((ir_scan
&& (end_state
== TAP_SI
)) ||
344 (!ir_scan
&& (end_state
== TAP_SD
))))
352 if (cur_state
!= end_state
)
353 gw16012_state_move();
357 int gw16012_execute_queue(void)
359 jtag_command_t
*cmd
= jtag_command_queue
; /* currently processed command */
369 #ifdef _DEBUG_JTAG_IO_
370 DEBUG("end_state: %i", cmd
->cmd
.end_state
->end_state
);
372 if (cmd
->cmd
.end_state
->end_state
!= -1)
373 gw16012_end_state(cmd
->cmd
.end_state
->end_state
);
376 #ifdef _DEBUG_JTAG_IO_
377 DEBUG("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
379 if (cmd
->cmd
.reset
->trst
== 1)
383 gw16012_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
386 #ifdef _DEBUG_JTAG_IO_
387 DEBUG("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
, cmd
->cmd
.runtest
->end_state
);
389 if (cmd
->cmd
.runtest
->end_state
!= -1)
390 gw16012_end_state(cmd
->cmd
.runtest
->end_state
);
391 gw16012_runtest(cmd
->cmd
.runtest
->num_cycles
);
394 #ifdef _DEBUG_JTAG_IO_
395 DEBUG("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
397 if (cmd
->cmd
.statemove
->end_state
!= -1)
398 gw16012_end_state(cmd
->cmd
.statemove
->end_state
);
399 gw16012_state_move();
402 #ifdef _DEBUG_JTAG_IO_
403 DEBUG("pathmove: %i states, end in %i", cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
405 gw16012_path_move(cmd
->cmd
.pathmove
);
408 if (cmd
->cmd
.scan
->end_state
!= -1)
409 gw16012_end_state(cmd
->cmd
.scan
->end_state
);
410 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
411 type
= jtag_scan_type(cmd
->cmd
.scan
);
412 #ifdef _DEBUG_JTAG_IO_
413 DEBUG("%s scan (%i) %i bit end in %i", (cmd
->cmd
.scan
->ir_scan
) ? "ir" : "dr",
414 type
, scan_size
, cmd
->cmd
.scan
->end_state
);
416 gw16012_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
);
417 if (jtag_read_buffer(buffer
, cmd
->cmd
.scan
) != ERROR_OK
)
418 return ERROR_JTAG_QUEUE_FAILED
;
423 #ifdef _DEBUG_JTAG_IO_
424 DEBUG("sleep %i", cmd
->cmd
.sleep
->us
);
426 jtag_sleep(cmd
->cmd
.sleep
->us
);
429 ERROR("BUG: unknown JTAG command type encountered");
438 #if PARPORT_USE_GIVEIO == 1
439 int gw16012_get_giveio_access()
442 OSVERSIONINFO version
;
444 version
.dwOSVersionInfoSize
= sizeof version
;
445 if (!GetVersionEx( &version
)) {
449 if (version
.dwPlatformId
!= VER_PLATFORM_WIN32_NT
)
452 h
= CreateFile( "\\\\.\\giveio", GENERIC_READ
, 0, NULL
, OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, NULL
);
453 if (h
== INVALID_HANDLE_VALUE
) {
464 int gw16012_init(void)
466 #if PARPORT_USE_PPDEV == 1
473 #if PARPORT_USE_PPDEV == 1
476 ERROR("device is already opened");
477 return ERROR_JTAG_INIT_FAILED
;
481 DEBUG("opening /dev/ppi%d...", gw16012_port
);
483 snprintf(buffer
, 256, "/dev/ppi%d", gw16012_port
);
484 device_handle
= open(buffer
, O_WRONLY
);
486 DEBUG("opening /dev/parport%d...", gw16012_port
);
488 snprintf(buffer
, 256, "/dev/parport%d", gw16012_port
);
489 device_handle
= open(buffer
, O_WRONLY
);
493 ERROR("cannot open device. check it exists and that user read and write rights are set");
494 return ERROR_JTAG_INIT_FAILED
;
500 i
=ioctl(device_handle
, PPCLAIM
);
503 ERROR("cannot claim device");
504 return ERROR_JTAG_INIT_FAILED
;
507 i
= PARPORT_MODE_COMPAT
;
508 i
= ioctl(device_handle
, PPSETMODE
, & i
);
511 ERROR(" cannot set compatible mode to device");
512 return ERROR_JTAG_INIT_FAILED
;
515 i
= IEEE1284_MODE_COMPAT
;
516 i
= ioctl(device_handle
, PPNEGOT
, & i
);
519 ERROR("cannot set compatible 1284 mode to device");
520 return ERROR_JTAG_INIT_FAILED
;
524 if (gw16012_port
== 0)
526 gw16012_port
= 0x378;
527 WARNING("No gw16012 port specified, using default '0x378' (LPT1)");
530 DEBUG("requesting privileges for parallel port 0x%lx...", gw16012_port
);
531 #if PARPORT_USE_GIVEIO == 1
532 if (gw16012_get_giveio_access() != 0)
533 #else /* PARPORT_USE_GIVEIO */
534 if (ioperm(gw16012_port
, 3, 1) != 0)
535 #endif /* PARPORT_USE_GIVEIO */
537 ERROR("missing privileges for direct i/o");
538 return ERROR_JTAG_INIT_FAILED
;
540 DEBUG("...privileges granted");
542 /* make sure parallel port is in right mode (clear tristate and interrupt */
544 outb(gw16012_port
+ 2, 0x0);
546 outb(0x0, gw16012_port
+ 2);
548 #endif /* PARPORT_USE_PPDEV */
550 gw16012_input(&status_port
);
551 gw16012_msb
= (status_port
& 0x80) ^ 0x80;
553 gw16012_speed(jtag_speed
);
559 int gw16012_quit(void)
565 int gw16012_handle_parport_port_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
570 /* only if the port wasn't overwritten by cmdline */
571 if (gw16012_port
== 0)
572 gw16012_port
= strtoul(args
[0], NULL
, 0);
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