ia64/linux-2.6.18-xen.hg

view drivers/acpi/utilities/utdebug.c @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
1 /******************************************************************************
2 *
3 * Module Name: utdebug - Debug print routines
4 *
5 *****************************************************************************/
7 /*
8 * Copyright (C) 2000 - 2006, R. Byron Moore
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
44 #include <acpi/acpi.h>
46 #define _COMPONENT ACPI_UTILITIES
47 ACPI_MODULE_NAME("utdebug")
49 #ifdef ACPI_DEBUG_OUTPUT
50 static acpi_thread_id acpi_gbl_prev_thread_id;
51 static char *acpi_gbl_fn_entry_str = "----Entry";
52 static char *acpi_gbl_fn_exit_str = "----Exit-";
54 /* Local prototypes */
56 static const char *acpi_ut_trim_function_name(const char *function_name);
58 /*******************************************************************************
59 *
60 * FUNCTION: acpi_ut_init_stack_ptr_trace
61 *
62 * PARAMETERS: None
63 *
64 * RETURN: None
65 *
66 * DESCRIPTION: Save the current CPU stack pointer at subsystem startup
67 *
68 ******************************************************************************/
70 void acpi_ut_init_stack_ptr_trace(void)
71 {
72 u32 current_sp;
74 acpi_gbl_entry_stack_pointer = ACPI_PTR_DIFF(&current_sp, NULL);
75 }
77 /*******************************************************************************
78 *
79 * FUNCTION: acpi_ut_track_stack_ptr
80 *
81 * PARAMETERS: None
82 *
83 * RETURN: None
84 *
85 * DESCRIPTION: Save the current CPU stack pointer
86 *
87 ******************************************************************************/
89 void acpi_ut_track_stack_ptr(void)
90 {
91 acpi_size current_sp;
93 current_sp = ACPI_PTR_DIFF(&current_sp, NULL);
95 if (current_sp < acpi_gbl_lowest_stack_pointer) {
96 acpi_gbl_lowest_stack_pointer = current_sp;
97 }
99 if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
100 acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
101 }
102 }
104 /*******************************************************************************
105 *
106 * FUNCTION: acpi_ut_trim_function_name
107 *
108 * PARAMETERS: function_name - Ascii string containing a procedure name
109 *
110 * RETURN: Updated pointer to the function name
111 *
112 * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
113 * This allows compiler macros such as __FUNCTION__ to be used
114 * with no change to the debug output.
115 *
116 ******************************************************************************/
118 static const char *acpi_ut_trim_function_name(const char *function_name)
119 {
121 /* All Function names are longer than 4 chars, check is safe */
123 if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) {
125 /* This is the case where the original source has not been modified */
127 return (function_name + 4);
128 }
130 if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) {
132 /* This is the case where the source has been 'linuxized' */
134 return (function_name + 5);
135 }
137 return (function_name);
138 }
140 /*******************************************************************************
141 *
142 * FUNCTION: acpi_ut_debug_print
143 *
144 * PARAMETERS: requested_debug_level - Requested debug print level
145 * line_number - Caller's line number (for error output)
146 * function_name - Caller's procedure name
147 * module_name - Caller's module name
148 * component_id - Caller's component ID
149 * Format - Printf format field
150 * ... - Optional printf arguments
151 *
152 * RETURN: None
153 *
154 * DESCRIPTION: Print error message with prefix consisting of the module name,
155 * line number, and component ID.
156 *
157 ******************************************************************************/
159 void ACPI_INTERNAL_VAR_XFACE
160 acpi_ut_debug_print(u32 requested_debug_level,
161 u32 line_number,
162 const char *function_name,
163 char *module_name, u32 component_id, char *format, ...)
164 {
165 acpi_thread_id thread_id;
166 va_list args;
168 /*
169 * Stay silent if the debug level or component ID is disabled
170 */
171 if (!(requested_debug_level & acpi_dbg_level) ||
172 !(component_id & acpi_dbg_layer)) {
173 return;
174 }
176 /*
177 * Thread tracking and context switch notification
178 */
179 thread_id = acpi_os_get_thread_id();
180 if (thread_id != acpi_gbl_prev_thread_id) {
181 if (ACPI_LV_THREADS & acpi_dbg_level) {
182 acpi_os_printf
183 ("\n**** Context Switch from TID %X to TID %X ****\n\n",
184 (u32) acpi_gbl_prev_thread_id, (u32) thread_id);
185 }
187 acpi_gbl_prev_thread_id = thread_id;
188 }
190 /*
191 * Display the module name, current line number, thread ID (if requested),
192 * current procedure nesting level, and the current procedure name
193 */
194 acpi_os_printf("%8s-%04ld ", module_name, line_number);
196 if (ACPI_LV_THREADS & acpi_dbg_level) {
197 acpi_os_printf("[%04lX] ", thread_id);
198 }
200 acpi_os_printf("[%02ld] %-22.22s: ",
201 acpi_gbl_nesting_level,
202 acpi_ut_trim_function_name(function_name));
204 va_start(args, format);
205 acpi_os_vprintf(format, args);
206 }
208 ACPI_EXPORT_SYMBOL(acpi_ut_debug_print)
210 /*******************************************************************************
211 *
212 * FUNCTION: acpi_ut_debug_print_raw
213 *
214 * PARAMETERS: requested_debug_level - Requested debug print level
215 * line_number - Caller's line number
216 * function_name - Caller's procedure name
217 * module_name - Caller's module name
218 * component_id - Caller's component ID
219 * Format - Printf format field
220 * ... - Optional printf arguments
221 *
222 * RETURN: None
223 *
224 * DESCRIPTION: Print message with no headers. Has same interface as
225 * debug_print so that the same macros can be used.
226 *
227 ******************************************************************************/
228 void ACPI_INTERNAL_VAR_XFACE
229 acpi_ut_debug_print_raw(u32 requested_debug_level,
230 u32 line_number,
231 const char *function_name,
232 char *module_name, u32 component_id, char *format, ...)
233 {
234 va_list args;
236 if (!(requested_debug_level & acpi_dbg_level) ||
237 !(component_id & acpi_dbg_layer)) {
238 return;
239 }
241 va_start(args, format);
242 acpi_os_vprintf(format, args);
243 }
245 ACPI_EXPORT_SYMBOL(acpi_ut_debug_print_raw)
247 /*******************************************************************************
248 *
249 * FUNCTION: acpi_ut_trace
250 *
251 * PARAMETERS: line_number - Caller's line number
252 * function_name - Caller's procedure name
253 * module_name - Caller's module name
254 * component_id - Caller's component ID
255 *
256 * RETURN: None
257 *
258 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
259 * set in debug_level
260 *
261 ******************************************************************************/
262 void
263 acpi_ut_trace(u32 line_number,
264 const char *function_name, char *module_name, u32 component_id)
265 {
267 acpi_gbl_nesting_level++;
268 acpi_ut_track_stack_ptr();
270 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
271 line_number, function_name, module_name,
272 component_id, "%s\n", acpi_gbl_fn_entry_str);
273 }
275 ACPI_EXPORT_SYMBOL(acpi_ut_trace)
277 /*******************************************************************************
278 *
279 * FUNCTION: acpi_ut_trace_ptr
280 *
281 * PARAMETERS: line_number - Caller's line number
282 * function_name - Caller's procedure name
283 * module_name - Caller's module name
284 * component_id - Caller's component ID
285 * Pointer - Pointer to display
286 *
287 * RETURN: None
288 *
289 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
290 * set in debug_level
291 *
292 ******************************************************************************/
293 void
294 acpi_ut_trace_ptr(u32 line_number,
295 const char *function_name,
296 char *module_name, u32 component_id, void *pointer)
297 {
298 acpi_gbl_nesting_level++;
299 acpi_ut_track_stack_ptr();
301 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
302 line_number, function_name, module_name,
303 component_id, "%s %p\n", acpi_gbl_fn_entry_str,
304 pointer);
305 }
307 /*******************************************************************************
308 *
309 * FUNCTION: acpi_ut_trace_str
310 *
311 * PARAMETERS: line_number - Caller's line number
312 * function_name - Caller's procedure name
313 * module_name - Caller's module name
314 * component_id - Caller's component ID
315 * String - Additional string to display
316 *
317 * RETURN: None
318 *
319 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
320 * set in debug_level
321 *
322 ******************************************************************************/
324 void
325 acpi_ut_trace_str(u32 line_number,
326 const char *function_name,
327 char *module_name, u32 component_id, char *string)
328 {
330 acpi_gbl_nesting_level++;
331 acpi_ut_track_stack_ptr();
333 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
334 line_number, function_name, module_name,
335 component_id, "%s %s\n", acpi_gbl_fn_entry_str,
336 string);
337 }
339 /*******************************************************************************
340 *
341 * FUNCTION: acpi_ut_trace_u32
342 *
343 * PARAMETERS: line_number - Caller's line number
344 * function_name - Caller's procedure name
345 * module_name - Caller's module name
346 * component_id - Caller's component ID
347 * Integer - Integer to display
348 *
349 * RETURN: None
350 *
351 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
352 * set in debug_level
353 *
354 ******************************************************************************/
356 void
357 acpi_ut_trace_u32(u32 line_number,
358 const char *function_name,
359 char *module_name, u32 component_id, u32 integer)
360 {
362 acpi_gbl_nesting_level++;
363 acpi_ut_track_stack_ptr();
365 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
366 line_number, function_name, module_name,
367 component_id, "%s %08X\n", acpi_gbl_fn_entry_str,
368 integer);
369 }
371 /*******************************************************************************
372 *
373 * FUNCTION: acpi_ut_exit
374 *
375 * PARAMETERS: line_number - Caller's line number
376 * function_name - Caller's procedure name
377 * module_name - Caller's module name
378 * component_id - Caller's component ID
379 *
380 * RETURN: None
381 *
382 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
383 * set in debug_level
384 *
385 ******************************************************************************/
387 void
388 acpi_ut_exit(u32 line_number,
389 const char *function_name, char *module_name, u32 component_id)
390 {
392 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
393 line_number, function_name, module_name,
394 component_id, "%s\n", acpi_gbl_fn_exit_str);
396 acpi_gbl_nesting_level--;
397 }
399 ACPI_EXPORT_SYMBOL(acpi_ut_exit)
401 /*******************************************************************************
402 *
403 * FUNCTION: acpi_ut_status_exit
404 *
405 * PARAMETERS: line_number - Caller's line number
406 * function_name - Caller's procedure name
407 * module_name - Caller's module name
408 * component_id - Caller's component ID
409 * Status - Exit status code
410 *
411 * RETURN: None
412 *
413 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
414 * set in debug_level. Prints exit status also.
415 *
416 ******************************************************************************/
417 void
418 acpi_ut_status_exit(u32 line_number,
419 const char *function_name,
420 char *module_name, u32 component_id, acpi_status status)
421 {
423 if (ACPI_SUCCESS(status)) {
424 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
425 line_number, function_name, module_name,
426 component_id, "%s %s\n",
427 acpi_gbl_fn_exit_str,
428 acpi_format_exception(status));
429 } else {
430 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
431 line_number, function_name, module_name,
432 component_id, "%s ****Exception****: %s\n",
433 acpi_gbl_fn_exit_str,
434 acpi_format_exception(status));
435 }
437 acpi_gbl_nesting_level--;
438 }
440 ACPI_EXPORT_SYMBOL(acpi_ut_status_exit)
442 /*******************************************************************************
443 *
444 * FUNCTION: acpi_ut_value_exit
445 *
446 * PARAMETERS: line_number - Caller's line number
447 * function_name - Caller's procedure name
448 * module_name - Caller's module name
449 * component_id - Caller's component ID
450 * Value - Value to be printed with exit msg
451 *
452 * RETURN: None
453 *
454 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
455 * set in debug_level. Prints exit value also.
456 *
457 ******************************************************************************/
458 void
459 acpi_ut_value_exit(u32 line_number,
460 const char *function_name,
461 char *module_name, u32 component_id, acpi_integer value)
462 {
464 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
465 line_number, function_name, module_name,
466 component_id, "%s %8.8X%8.8X\n",
467 acpi_gbl_fn_exit_str, ACPI_FORMAT_UINT64(value));
469 acpi_gbl_nesting_level--;
470 }
472 ACPI_EXPORT_SYMBOL(acpi_ut_value_exit)
474 /*******************************************************************************
475 *
476 * FUNCTION: acpi_ut_ptr_exit
477 *
478 * PARAMETERS: line_number - Caller's line number
479 * function_name - Caller's procedure name
480 * module_name - Caller's module name
481 * component_id - Caller's component ID
482 * Ptr - Pointer to display
483 *
484 * RETURN: None
485 *
486 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
487 * set in debug_level. Prints exit value also.
488 *
489 ******************************************************************************/
490 void
491 acpi_ut_ptr_exit(u32 line_number,
492 const char *function_name,
493 char *module_name, u32 component_id, u8 * ptr)
494 {
496 acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
497 line_number, function_name, module_name,
498 component_id, "%s %p\n", acpi_gbl_fn_exit_str, ptr);
500 acpi_gbl_nesting_level--;
501 }
503 #endif
505 /*******************************************************************************
506 *
507 * FUNCTION: acpi_ut_dump_buffer
508 *
509 * PARAMETERS: Buffer - Buffer to dump
510 * Count - Amount to dump, in bytes
511 * Display - BYTE, WORD, DWORD, or QWORD display
512 * component_iD - Caller's component ID
513 *
514 * RETURN: None
515 *
516 * DESCRIPTION: Generic dump buffer in both hex and ascii.
517 *
518 ******************************************************************************/
520 void acpi_ut_dump_buffer2(u8 * buffer, u32 count, u32 display)
521 {
522 acpi_native_uint i = 0;
523 acpi_native_uint j;
524 u32 temp32;
525 u8 buf_char;
527 if ((count < 4) || (count & 0x01)) {
528 display = DB_BYTE_DISPLAY;
529 }
531 /* Nasty little dump buffer routine! */
533 while (i < count) {
535 /* Print current offset */
537 acpi_os_printf("%6.4X: ", (u32) i);
539 /* Print 16 hex chars */
541 for (j = 0; j < 16;) {
542 if (i + j >= count) {
544 /* Dump fill spaces */
546 acpi_os_printf("%*s", ((display * 2) + 1), " ");
547 j += (acpi_native_uint) display;
548 continue;
549 }
551 switch (display) {
552 case DB_BYTE_DISPLAY:
553 default: /* Default is BYTE display */
555 acpi_os_printf("%02X ", buffer[i + j]);
556 break;
558 case DB_WORD_DISPLAY:
560 ACPI_MOVE_16_TO_32(&temp32, &buffer[i + j]);
561 acpi_os_printf("%04X ", temp32);
562 break;
564 case DB_DWORD_DISPLAY:
566 ACPI_MOVE_32_TO_32(&temp32, &buffer[i + j]);
567 acpi_os_printf("%08X ", temp32);
568 break;
570 case DB_QWORD_DISPLAY:
572 ACPI_MOVE_32_TO_32(&temp32, &buffer[i + j]);
573 acpi_os_printf("%08X", temp32);
575 ACPI_MOVE_32_TO_32(&temp32, &buffer[i + j + 4]);
576 acpi_os_printf("%08X ", temp32);
577 break;
578 }
580 j += (acpi_native_uint) display;
581 }
583 /*
584 * Print the ASCII equivalent characters but watch out for the bad
585 * unprintable ones (printable chars are 0x20 through 0x7E)
586 */
587 acpi_os_printf(" ");
588 for (j = 0; j < 16; j++) {
589 if (i + j >= count) {
590 acpi_os_printf("\n");
591 return;
592 }
594 buf_char = buffer[i + j];
595 if (ACPI_IS_PRINT(buf_char)) {
596 acpi_os_printf("%c", buf_char);
597 } else {
598 acpi_os_printf(".");
599 }
600 }
602 /* Done with that line. */
604 acpi_os_printf("\n");
605 i += 16;
606 }
608 return;
609 }
611 /*******************************************************************************
612 *
613 * FUNCTION: acpi_ut_dump_buffer
614 *
615 * PARAMETERS: Buffer - Buffer to dump
616 * Count - Amount to dump, in bytes
617 * Display - BYTE, WORD, DWORD, or QWORD display
618 * component_iD - Caller's component ID
619 *
620 * RETURN: None
621 *
622 * DESCRIPTION: Generic dump buffer in both hex and ascii.
623 *
624 ******************************************************************************/
626 void acpi_ut_dump_buffer(u8 * buffer, u32 count, u32 display, u32 component_id)
627 {
629 /* Only dump the buffer if tracing is enabled */
631 if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
632 (component_id & acpi_dbg_layer))) {
633 return;
634 }
636 acpi_ut_dump_buffer2(buffer, count, display);
637 }