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"
37 #if PARPORT_USE_PPDEV == 1
38 #include <linux/parport.h>
39 #include <linux/ppdev.h>
41 #include <sys/ioctl.h>
43 #else /* not PARPORT_USE_PPDEV */
49 #if PARPORT_USE_GIVEIO == 1
59 static u16 amt_jtagaccel_port;
61 /* interface variables
63 static u8 aw_control_rst = 0x00;
64 static u8 aw_control_fsm = 0x10;
65 static u8 aw_control_baudrate = 0x20;
67 static int rtck_enabled = 0;
69 #if PARPORT_USE_PPDEV == 1
70 static int device_handle;
72 static int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR ;
73 #define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
74 #define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
76 static int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA ;
77 #define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
78 #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)
87 #endif // PARPORT_USE_PPDEV
89 static int amt_jtagaccel_execute_queue(void);
90 static int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx);
91 static int amt_jtagaccel_speed(int speed);
92 static int amt_jtagaccel_init(void);
93 static int amt_jtagaccel_quit(void);
95 static int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
96 static int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
98 /* tap_move[i][j]: tap movement command to go from state i to state j
106 static u8 amt_jtagaccel_tap_move[6][6][2] =
108 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */
109 {{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* RESET */
110 {{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* IDLE */
111 {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* DRSHIFT */
112 {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* DRPAUSE */
113 {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* IRSHIFT */
114 {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* IRPAUSE */
118 jtag_interface_t amt_jtagaccel_interface =
120 .name = "amt_jtagaccel",
122 .execute_queue = amt_jtagaccel_execute_queue,
124 .speed = amt_jtagaccel_speed,
125 .register_commands = amt_jtagaccel_register_commands,
126 .init = amt_jtagaccel_init,
127 .quit = amt_jtagaccel_quit,
130 static 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 static 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 static int amt_jtagaccel_speed(int speed)
157 aw_control_baudrate &= 0xf0;
158 aw_control_baudrate |= speed & 0x0f;
159 AMT_AW(aw_control_baudrate);
164 static void amt_jtagaccel_end_state(tap_state_t state)
166 if (tap_is_state_stable(state))
167 tap_set_end_state(state);
170 LOG_ERROR("BUG: %i is not a valid end state", state);
175 static void amt_wait_scan_busy(void)
181 while (((ar_status) & 0x80) && (timeout-- > 0))
184 if (ar_status & 0x80)
186 LOG_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 static void amt_jtagaccel_state_move(void)
196 tap_state_t cur_state = tap_get_state();
197 tap_state_t end_state = tap_get_end_state();
199 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][0];
200 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][1];
202 aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
203 AMT_AW(aw_scan_tms_5);
204 if (jtag_speed > 3 || rtck_enabled)
205 amt_wait_scan_busy();
207 if (tms_scan[0] & 0x80)
209 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
210 AMT_AW(aw_scan_tms_5);
211 if (jtag_speed > 3 || rtck_enabled)
212 amt_wait_scan_busy();
215 tap_set_state(end_state);
218 static void amt_jtagaccel_runtest(int num_cycles)
224 tap_state_t saved_end_state = tap_get_end_state();
226 /* only do a state_move when we're not already in IDLE */
227 if (tap_get_state() != TAP_IDLE)
229 amt_jtagaccel_end_state(TAP_IDLE);
230 amt_jtagaccel_state_move();
233 while (num_cycles - i >= 5)
235 aw_scan_tms_5 = 0x40;
236 AMT_AW(aw_scan_tms_5);
240 if (num_cycles - i > 0)
242 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
243 AMT_AW(aw_scan_tms_1to4);
246 amt_jtagaccel_end_state(saved_end_state);
247 if (tap_get_state() != tap_get_end_state())
248 amt_jtagaccel_state_move();
251 static void amt_jtagaccel_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
253 int bits_left = scan_size;
255 tap_state_t saved_end_state = tap_get_end_state();
263 amt_jtagaccel_end_state(TAP_IRSHIFT);
265 amt_jtagaccel_end_state(TAP_DRSHIFT);
267 amt_jtagaccel_state_move();
268 amt_jtagaccel_end_state(saved_end_state);
270 /* handle unaligned bits at the beginning */
271 if ((scan_size - 1) % 8)
273 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
274 AMT_AW(aw_tdi_option);
276 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
278 if (jtag_speed > 3 || rtck_enabled)
279 amt_wait_scan_busy();
281 if ((type == SCAN_IN) || (type == SCAN_IO))
284 dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
285 buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
288 bit_count += (scan_size - 1) % 8;
289 bits_left -= (scan_size - 1) % 8;
292 while (bits_left - 1 >= 8)
294 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
296 if (jtag_speed > 3 || rtck_enabled)
297 amt_wait_scan_busy();
299 if ((type == SCAN_IN) || (type == SCAN_IO))
302 buf_set_u32(buffer, bit_count, 8, dr_tdo);
309 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][0];
310 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][1];
311 aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
313 if (jtag_speed > 3 || rtck_enabled)
314 amt_wait_scan_busy();
316 if ((type == SCAN_IN) || (type == SCAN_IO))
319 dr_tdo = dr_tdo >> 7;
320 buf_set_u32(buffer, bit_count, 1, dr_tdo);
323 if (tms_scan[0] & 0x80)
325 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
327 if (jtag_speed > 3 || rtck_enabled)
328 amt_wait_scan_busy();
330 tap_set_state(tap_get_end_state());
333 static int amt_jtagaccel_execute_queue(void)
335 jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
341 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
342 * that wasn't handled by a caller-provided error handler
351 #ifdef _DEBUG_JTAG_IO_
352 LOG_DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
354 if (cmd->cmd.end_state->end_state != TAP_INVALID)
355 amt_jtagaccel_end_state(cmd->cmd.end_state->end_state);
358 #ifdef _DEBUG_JTAG_IO_
359 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
361 if (cmd->cmd.reset->trst == 1)
363 tap_set_state(TAP_RESET);
365 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
368 #ifdef _DEBUG_JTAG_IO_
369 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
371 if (cmd->cmd.runtest->end_state != TAP_INVALID)
372 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
373 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
376 #ifdef _DEBUG_JTAG_IO_
377 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
379 if (cmd->cmd.statemove->end_state != TAP_INVALID)
380 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
381 amt_jtagaccel_state_move();
384 #ifdef _DEBUG_JTAG_IO_
385 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
387 if (cmd->cmd.scan->end_state != TAP_INVALID)
388 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
389 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
390 type = jtag_scan_type(cmd->cmd.scan);
391 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
392 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
393 retval = ERROR_JTAG_QUEUE_FAILED;
398 #ifdef _DEBUG_JTAG_IO_
399 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
401 jtag_sleep(cmd->cmd.sleep->us);
404 LOG_ERROR("BUG: unknown JTAG command type encountered");
413 #if PARPORT_USE_GIVEIO == 1
414 int amt_jtagaccel_get_giveio_access(void)
417 OSVERSIONINFO version;
419 version.dwOSVersionInfoSize = sizeof version;
420 if (!GetVersionEx( &version )) {
424 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
427 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
428 if (h == INVALID_HANDLE_VALUE) {
439 static int amt_jtagaccel_init(void)
441 #if PARPORT_USE_PPDEV == 1
450 #if PARPORT_USE_PPDEV == 1
451 if (device_handle > 0)
453 LOG_ERROR("device is already opened");
454 return ERROR_JTAG_INIT_FAILED;
457 snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
458 device_handle = open(buffer, O_RDWR);
460 if (device_handle < 0)
462 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
463 return ERROR_JTAG_INIT_FAILED;
466 i = ioctl(device_handle, PPCLAIM);
469 LOG_ERROR("cannot claim device");
470 return ERROR_JTAG_INIT_FAILED;
473 i = IEEE1284_MODE_EPP;
474 i = ioctl(device_handle, PPSETMODE, & i);
477 LOG_ERROR(" cannot set compatible mode to device");
478 return ERROR_JTAG_INIT_FAILED;
482 i = ioctl(device_handle, PPWCONTROL, &control_port);
485 i = ioctl(device_handle, PPWCONTROL, &control_port);
488 if (amt_jtagaccel_port == 0)
490 amt_jtagaccel_port = 0x378;
491 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
494 #if PARPORT_USE_GIVEIO == 1
495 if (amt_jtagaccel_get_giveio_access() != 0) {
496 #else /* PARPORT_USE_GIVEIO */
497 if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
498 #endif /* PARPORT_USE_GIVEIO */
499 LOG_ERROR("missing privileges for direct i/o");
500 return ERROR_JTAG_INIT_FAILED;
503 /* prepare epp port */
505 status_port = inb(amt_jtagaccel_port + 1);
506 outb(status_port | 0x1, amt_jtagaccel_port + 1);
509 outb(0x00, amt_jtagaccel_port + 2);
510 outb(0x04, amt_jtagaccel_port + 2);
515 /* set RTCK enable bit */
516 aw_control_fsm |= 0x02;
519 /* enable JTAG port */
520 aw_control_fsm |= 0x04;
521 AMT_AW(aw_control_fsm);
523 amt_jtagaccel_speed(jtag_speed);
525 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
526 aw_control_rst &= ~0x8;
528 aw_control_rst |= 0x8;
530 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
531 aw_control_rst &= ~0x2;
533 aw_control_rst |= 0x2;
535 amt_jtagaccel_reset(0, 0);
537 /* read status register */
539 LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status);
544 static int amt_jtagaccel_quit(void)
550 static int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
555 /* only if the port wasn't overwritten by cmdline */
556 if (amt_jtagaccel_port == 0)
557 amt_jtagaccel_port = strtoul(args[0], NULL, 0);
562 static int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
566 command_print(cmd_ctx, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
571 if (strcmp(args[0], "enabled") == 0)