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"
40 #if PARPORT_USE_PPDEV == 1
41 #include <linux/parport.h>
42 #include <linux/ppdev.h>
44 #include <sys/ioctl.h>
46 #else /* not PARPORT_USE_PPDEV */
52 #if PARPORT_USE_GIVEIO == 1
63 unsigned long amt_jtagaccel_port;
65 /* interface variables
67 static u8 aw_control_rst = 0x00;
68 static u8 aw_control_fsm = 0x10;
69 static u8 aw_control_baudrate = 0x20;
71 static int rtck_enabled = 0;
73 #if PARPORT_USE_PPDEV == 1
74 static int device_handle;
75 int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR ;
76 int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA ;
77 #define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
78 #define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
79 #define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
80 #define AMT_DR(val) do { ioctl(device_handle, PPSETMODE, &data_mode); read(device_handle, &val, 1); } while (0)
82 #define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
83 #define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
84 #define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
85 #define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
88 int amt_jtagaccel_execute_queue(void);
89 int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx);
90 int amt_jtagaccel_speed(int speed);
91 int amt_jtagaccel_init(void);
92 int amt_jtagaccel_quit(void);
94 int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
95 int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
97 /* tap_move[i][j]: tap movement command to go from state i to state j
105 u8 amt_jtagaccel_tap_move[6][6][2] =
107 /* TLR RTI SD PD SI PI */
108 {{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* TLR */
109 {{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* RTI */
110 {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* SD */
111 {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* PD */
112 {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* SI */
113 {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* PI */
116 jtag_interface_t amt_jtagaccel_interface =
118 .name = "amt_jtagaccel",
120 .execute_queue = amt_jtagaccel_execute_queue,
122 .support_pathmove = 0,
124 .speed = amt_jtagaccel_speed,
125 .register_commands = amt_jtagaccel_register_commands,
126 .init = amt_jtagaccel_init,
127 .quit = amt_jtagaccel_quit,
130 int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx)
132 register_command(cmd_ctx, NULL, "parport_port", amt_jtagaccel_handle_parport_port_command,
133 COMMAND_CONFIG, NULL);
134 register_command(cmd_ctx, NULL, "rtck", amt_jtagaccel_handle_rtck_command,
135 COMMAND_CONFIG, NULL);
140 void amt_jtagaccel_reset(int trst, int srst)
143 aw_control_rst |= 0x4;
145 aw_control_rst &= ~0x4;
148 aw_control_rst |= 0x1;
150 aw_control_rst &= ~0x1;
152 AMT_AW(aw_control_rst);
155 int amt_jtagaccel_speed(int speed)
157 aw_control_baudrate &= 0xf0;
158 aw_control_baudrate |= speed & 0x0f;
159 AMT_AW(aw_control_baudrate);
164 void amt_jtagaccel_end_state(state)
166 if (tap_move_map[state] != -1)
170 ERROR("BUG: %i is not a valid end state", state);
175 void amt_wait_scan_busy()
181 while (((ar_status) & 0x80) && (timeout-- > 0))
184 if (ar_status & 0x80)
186 ERROR("amt_jtagaccel timed out while waiting for end of scan, rtck was %s, last AR_STATUS: 0x%2.2x", (rtck_enabled) ? "enabled" : "disabled", ar_status);
191 void amt_jtagaccel_state_move(void)
196 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
197 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
199 aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
200 AMT_AW(aw_scan_tms_5);
201 if (jtag_speed > 3 || rtck_enabled)
202 amt_wait_scan_busy();
204 if (tms_scan[0] & 0x80)
206 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
207 AMT_AW(aw_scan_tms_5);
208 if (jtag_speed > 3 || rtck_enabled)
209 amt_wait_scan_busy();
212 cur_state = end_state;
215 void amt_jtagaccel_runtest(int num_cycles)
221 enum tap_state saved_end_state = end_state;
223 /* only do a state_move when we're not already in RTI */
224 if (cur_state != TAP_RTI)
226 amt_jtagaccel_end_state(TAP_RTI);
227 amt_jtagaccel_state_move();
230 while (num_cycles - i >= 5)
232 aw_scan_tms_5 = 0x40;
233 AMT_AW(aw_scan_tms_5);
237 if (num_cycles - i > 0)
239 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
240 AMT_AW(aw_scan_tms_1to4);
243 amt_jtagaccel_end_state(saved_end_state);
244 if (cur_state != end_state)
245 amt_jtagaccel_state_move();
248 void amt_jtagaccel_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
250 int bits_left = scan_size;
252 enum tap_state saved_end_state = end_state;
260 amt_jtagaccel_end_state(TAP_SI);
262 amt_jtagaccel_end_state(TAP_SD);
264 amt_jtagaccel_state_move();
265 amt_jtagaccel_end_state(saved_end_state);
267 /* handle unaligned bits at the beginning */
268 if ((scan_size - 1) % 8)
270 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
271 AMT_AW(aw_tdi_option);
273 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
275 if (jtag_speed > 3 || rtck_enabled)
276 amt_wait_scan_busy();
278 if ((type == SCAN_IN) || (type == SCAN_IO))
281 dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
282 buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
285 bit_count += (scan_size - 1) % 8;
286 bits_left -= (scan_size - 1) % 8;
289 while (bits_left - 1 >= 8)
291 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
293 if (jtag_speed > 3 || rtck_enabled)
294 amt_wait_scan_busy();
296 if ((type == SCAN_IN) || (type == SCAN_IO))
299 buf_set_u32(buffer, bit_count, 8, dr_tdo);
306 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
307 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
308 aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
310 if (jtag_speed > 3 || rtck_enabled)
311 amt_wait_scan_busy();
313 if ((type == SCAN_IN) || (type == SCAN_IO))
316 dr_tdo = dr_tdo >> 7;
317 buf_set_u32(buffer, bit_count, 1, dr_tdo);
320 if (tms_scan[0] & 0x80)
322 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
324 if (jtag_speed > 3 || rtck_enabled)
325 amt_wait_scan_busy();
327 cur_state = end_state;
330 int amt_jtagaccel_execute_queue(void)
332 jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
338 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
339 * that wasn't handled by a caller-provided error handler
348 #ifdef _DEBUG_JTAG_IO_
349 DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
351 if (cmd->cmd.end_state->end_state != -1)
352 amt_jtagaccel_end_state(cmd->cmd.end_state->end_state);
355 #ifdef _DEBUG_JTAG_IO_
356 DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
358 if (cmd->cmd.reset->trst == 1)
362 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
365 #ifdef _DEBUG_JTAG_IO_
366 DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
368 if (cmd->cmd.runtest->end_state != -1)
369 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
370 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
373 #ifdef _DEBUG_JTAG_IO_
374 DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
376 if (cmd->cmd.statemove->end_state != -1)
377 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
378 amt_jtagaccel_state_move();
381 #ifdef _DEBUG_JTAG_IO_
382 DEBUG("scan end in %i", cmd->cmd.scan->end_state);
384 if (cmd->cmd.scan->end_state != -1)
385 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
386 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
387 type = jtag_scan_type(cmd->cmd.scan);
388 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
389 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
390 retval = ERROR_JTAG_QUEUE_FAILED;
395 #ifdef _DEBUG_JTAG_IO_
396 DEBUG("sleep %i", cmd->cmd.sleep->us);
398 jtag_sleep(cmd->cmd.sleep->us);
401 ERROR("BUG: unknown JTAG command type encountered");
410 #if PARPORT_USE_GIVEIO == 1
411 int amt_jtagaccel_get_giveio_access()
414 OSVERSIONINFO version;
416 version.dwOSVersionInfoSize = sizeof version;
417 if (!GetVersionEx( &version )) {
421 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
424 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
425 if (h == INVALID_HANDLE_VALUE) {
436 int amt_jtagaccel_init(void)
438 #if PARPORT_USE_PPDEV == 1
447 #if PARPORT_USE_PPDEV == 1
448 if (device_handle > 0)
450 ERROR("device is already opened");
451 return ERROR_JTAG_INIT_FAILED;
454 snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
455 device_handle = open(buffer, O_RDWR);
457 if (device_handle < 0)
459 ERROR("cannot open device. check it exists and that user read and write rights are set");
460 return ERROR_JTAG_INIT_FAILED;
463 i = ioctl(device_handle, PPCLAIM);
466 ERROR("cannot claim device");
467 return ERROR_JTAG_INIT_FAILED;
470 i = IEEE1284_MODE_EPP;
471 i = ioctl(device_handle, PPSETMODE, & i);
474 ERROR(" cannot set compatible mode to device");
475 return ERROR_JTAG_INIT_FAILED;
479 i = ioctl(device_handle, PPWCONTROL, &control_port);
482 i = ioctl(device_handle, PPWCONTROL, &control_port);
485 if (amt_jtagaccel_port == 0)
487 amt_jtagaccel_port = 0x378;
488 WARNING("No parport port specified, using default '0x378' (LPT1)");
491 #if PARPORT_USE_GIVEIO == 1
492 if (amt_jtagaccel_get_giveio_access() != 0) {
493 #else /* PARPORT_USE_GIVEIO */
494 if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
495 #endif /* PARPORT_USE_GIVEIO */
496 ERROR("missing privileges for direct i/o");
497 return ERROR_JTAG_INIT_FAILED;
500 /* prepare epp port */
502 status_port = inb(amt_jtagaccel_port + 1);
503 outb(status_port | 0x1, amt_jtagaccel_port + 1);
506 outb(0x00, amt_jtagaccel_port + 2);
507 outb(0x04, amt_jtagaccel_port + 2);
512 /* set RTCK enable bit */
513 aw_control_fsm |= 0x02;
516 /* enable JTAG port */
517 aw_control_fsm |= 0x04;
518 AMT_AW(aw_control_fsm);
520 amt_jtagaccel_speed(jtag_speed);
522 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
523 aw_control_rst &= ~0x8;
525 aw_control_rst |= 0x8;
527 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
528 aw_control_rst &= ~0x2;
530 aw_control_rst |= 0x2;
532 amt_jtagaccel_reset(0, 0);
534 /* read status register */
536 DEBUG("AR_STATUS: 0x%2.2x", ar_status);
541 int amt_jtagaccel_quit(void)
547 int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
552 /* only if the port wasn't overwritten by cmdline */
553 if (amt_jtagaccel_port == 0)
554 amt_jtagaccel_port = strtoul(args[0], NULL, 0);
559 int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
563 command_print(cmd_ctx, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
568 if (strcmp(args[0], "enabled") == 0)