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 ***************************************************************************/
27 #if PARPORT_USE_PPDEV == 1
28 #include <linux/parport.h>
29 #include <linux/ppdev.h>
30 #include <sys/ioctl.h>
31 #else /* not PARPORT_USE_PPDEV */
37 #if PARPORT_USE_GIVEIO == 1
44 static u16 amt_jtagaccel_port;
46 /* interface variables
48 static u8 aw_control_rst = 0x00;
49 static u8 aw_control_fsm = 0x10;
50 static u8 aw_control_baudrate = 0x20;
52 static int rtck_enabled = 0;
54 #if PARPORT_USE_PPDEV == 1
55 static int device_handle;
57 static int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR ;
58 #define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
59 #define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
61 static int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA ;
62 #define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
63 #define AMT_DR(val) do { ioctl(device_handle, PPSETMODE, &data_mode); read(device_handle, &val, 1); } while (0)
67 #define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
68 #define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
69 #define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
70 #define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
72 #endif // PARPORT_USE_PPDEV
74 static int amt_jtagaccel_execute_queue(void);
75 static int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx);
76 static int amt_jtagaccel_speed(int speed);
77 static int amt_jtagaccel_init(void);
78 static int amt_jtagaccel_quit(void);
80 static int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
81 static int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
83 /* tap_move[i][j]: tap movement command to go from state i to state j
91 static u8 amt_jtagaccel_tap_move[6][6][2] =
93 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */
94 {{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* RESET */
95 {{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* IDLE */
96 {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* DRSHIFT */
97 {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* DRPAUSE */
98 {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* IRSHIFT */
99 {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* IRPAUSE */
103 jtag_interface_t amt_jtagaccel_interface =
105 .name = "amt_jtagaccel",
107 .execute_queue = amt_jtagaccel_execute_queue,
109 .speed = amt_jtagaccel_speed,
110 .register_commands = amt_jtagaccel_register_commands,
111 .init = amt_jtagaccel_init,
112 .quit = amt_jtagaccel_quit,
115 static int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx)
117 register_command(cmd_ctx, NULL, "parport_port", amt_jtagaccel_handle_parport_port_command,
118 COMMAND_CONFIG, NULL);
119 register_command(cmd_ctx, NULL, "rtck", amt_jtagaccel_handle_rtck_command,
120 COMMAND_CONFIG, NULL);
125 static void amt_jtagaccel_reset(int trst, int srst)
128 aw_control_rst |= 0x4;
130 aw_control_rst &= ~0x4;
133 aw_control_rst |= 0x1;
135 aw_control_rst &= ~0x1;
137 AMT_AW(aw_control_rst);
140 static int amt_jtagaccel_speed(int speed)
142 aw_control_baudrate &= 0xf0;
143 aw_control_baudrate |= speed & 0x0f;
144 AMT_AW(aw_control_baudrate);
149 static void amt_jtagaccel_end_state(tap_state_t state)
151 if (tap_is_state_stable(state))
152 tap_set_end_state(state);
155 LOG_ERROR("BUG: %i is not a valid end state", state);
160 static void amt_wait_scan_busy(void)
166 while (((ar_status) & 0x80) && (timeout-- > 0))
169 if (ar_status & 0x80)
171 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);
176 static void amt_jtagaccel_state_move(void)
181 tap_state_t cur_state = tap_get_state();
182 tap_state_t end_state = tap_get_end_state();
184 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][0];
185 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(cur_state)][tap_move_ndx(end_state)][1];
187 aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
188 AMT_AW(aw_scan_tms_5);
189 if (jtag_speed > 3 || rtck_enabled)
190 amt_wait_scan_busy();
192 if (tms_scan[0] & 0x80)
194 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
195 AMT_AW(aw_scan_tms_5);
196 if (jtag_speed > 3 || rtck_enabled)
197 amt_wait_scan_busy();
200 tap_set_state(end_state);
203 static void amt_jtagaccel_runtest(int num_cycles)
209 tap_state_t saved_end_state = tap_get_end_state();
211 /* only do a state_move when we're not already in IDLE */
212 if (tap_get_state() != TAP_IDLE)
214 amt_jtagaccel_end_state(TAP_IDLE);
215 amt_jtagaccel_state_move();
218 while (num_cycles - i >= 5)
220 aw_scan_tms_5 = 0x40;
221 AMT_AW(aw_scan_tms_5);
225 if (num_cycles - i > 0)
227 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
228 AMT_AW(aw_scan_tms_1to4);
231 amt_jtagaccel_end_state(saved_end_state);
232 if (tap_get_state() != tap_get_end_state())
233 amt_jtagaccel_state_move();
236 static void amt_jtagaccel_scan(bool ir_scan, enum scan_type type, u8 *buffer, int scan_size)
238 int bits_left = scan_size;
240 tap_state_t saved_end_state = tap_get_end_state();
248 amt_jtagaccel_end_state(TAP_IRSHIFT);
250 amt_jtagaccel_end_state(TAP_DRSHIFT);
252 amt_jtagaccel_state_move();
253 amt_jtagaccel_end_state(saved_end_state);
255 /* handle unaligned bits at the beginning */
256 if ((scan_size - 1) % 8)
258 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
259 AMT_AW(aw_tdi_option);
261 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
263 if (jtag_speed > 3 || rtck_enabled)
264 amt_wait_scan_busy();
266 if ((type == SCAN_IN) || (type == SCAN_IO))
269 dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
270 buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
273 bit_count += (scan_size - 1) % 8;
274 bits_left -= (scan_size - 1) % 8;
277 while (bits_left - 1 >= 8)
279 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
281 if (jtag_speed > 3 || rtck_enabled)
282 amt_wait_scan_busy();
284 if ((type == SCAN_IN) || (type == SCAN_IO))
287 buf_set_u32(buffer, bit_count, 8, dr_tdo);
294 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][0];
295 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())][1];
296 aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
298 if (jtag_speed > 3 || rtck_enabled)
299 amt_wait_scan_busy();
301 if ((type == SCAN_IN) || (type == SCAN_IO))
304 dr_tdo = dr_tdo >> 7;
305 buf_set_u32(buffer, bit_count, 1, dr_tdo);
308 if (tms_scan[0] & 0x80)
310 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
312 if (jtag_speed > 3 || rtck_enabled)
313 amt_wait_scan_busy();
315 tap_set_state(tap_get_end_state());
318 static int amt_jtagaccel_execute_queue(void)
320 jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
326 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
327 * that wasn't handled by a caller-provided error handler
336 #ifdef _DEBUG_JTAG_IO_
337 LOG_DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
339 if (cmd->cmd.end_state->end_state != TAP_INVALID)
340 amt_jtagaccel_end_state(cmd->cmd.end_state->end_state);
343 #ifdef _DEBUG_JTAG_IO_
344 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
346 if (cmd->cmd.reset->trst == 1)
348 tap_set_state(TAP_RESET);
350 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
353 #ifdef _DEBUG_JTAG_IO_
354 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
356 if (cmd->cmd.runtest->end_state != TAP_INVALID)
357 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
358 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
361 #ifdef _DEBUG_JTAG_IO_
362 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
364 if (cmd->cmd.statemove->end_state != TAP_INVALID)
365 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
366 amt_jtagaccel_state_move();
369 #ifdef _DEBUG_JTAG_IO_
370 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
372 if (cmd->cmd.scan->end_state != TAP_INVALID)
373 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
374 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
375 type = jtag_scan_type(cmd->cmd.scan);
376 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
377 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
378 retval = ERROR_JTAG_QUEUE_FAILED;
383 #ifdef _DEBUG_JTAG_IO_
384 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
386 jtag_sleep(cmd->cmd.sleep->us);
389 LOG_ERROR("BUG: unknown JTAG command type encountered");
398 #if PARPORT_USE_GIVEIO == 1
399 int amt_jtagaccel_get_giveio_access(void)
402 OSVERSIONINFO version;
404 version.dwOSVersionInfoSize = sizeof version;
405 if (!GetVersionEx( &version )) {
409 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
412 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
413 if (h == INVALID_HANDLE_VALUE) {
424 static int amt_jtagaccel_init(void)
426 #if PARPORT_USE_PPDEV == 1
435 #if PARPORT_USE_PPDEV == 1
436 if (device_handle > 0)
438 LOG_ERROR("device is already opened");
439 return ERROR_JTAG_INIT_FAILED;
442 snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
443 device_handle = open(buffer, O_RDWR);
445 if (device_handle < 0)
447 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
448 return ERROR_JTAG_INIT_FAILED;
451 i = ioctl(device_handle, PPCLAIM);
454 LOG_ERROR("cannot claim device");
455 return ERROR_JTAG_INIT_FAILED;
458 i = IEEE1284_MODE_EPP;
459 i = ioctl(device_handle, PPSETMODE, & i);
462 LOG_ERROR(" cannot set compatible mode to device");
463 return ERROR_JTAG_INIT_FAILED;
467 i = ioctl(device_handle, PPWCONTROL, &control_port);
470 i = ioctl(device_handle, PPWCONTROL, &control_port);
473 if (amt_jtagaccel_port == 0)
475 amt_jtagaccel_port = 0x378;
476 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
479 #if PARPORT_USE_GIVEIO == 1
480 if (amt_jtagaccel_get_giveio_access() != 0) {
481 #else /* PARPORT_USE_GIVEIO */
482 if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
483 #endif /* PARPORT_USE_GIVEIO */
484 LOG_ERROR("missing privileges for direct i/o");
485 return ERROR_JTAG_INIT_FAILED;
488 /* prepare epp port */
490 status_port = inb(amt_jtagaccel_port + 1);
491 outb(status_port | 0x1, amt_jtagaccel_port + 1);
494 outb(0x00, amt_jtagaccel_port + 2);
495 outb(0x04, amt_jtagaccel_port + 2);
500 /* set RTCK enable bit */
501 aw_control_fsm |= 0x02;
504 /* enable JTAG port */
505 aw_control_fsm |= 0x04;
506 AMT_AW(aw_control_fsm);
508 amt_jtagaccel_speed(jtag_speed);
510 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
511 aw_control_rst &= ~0x8;
513 aw_control_rst |= 0x8;
515 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
516 aw_control_rst &= ~0x2;
518 aw_control_rst |= 0x2;
520 amt_jtagaccel_reset(0, 0);
522 /* read status register */
524 LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status);
529 static int amt_jtagaccel_quit(void)
535 static int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
540 /* only if the port wasn't overwritten by cmdline */
541 if (amt_jtagaccel_port == 0)
542 amt_jtagaccel_port = strtoul(args[0], NULL, 0);
547 static int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
551 command_print(cmd_ctx, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
556 if (strcmp(args[0], "enabled") == 0)