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83b80bac LZ |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: osunixxf - UNIX OSL interfaces | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
83b80bac LZ |
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 | */ | |
43 | ||
44 | /* | |
45 | * These interfaces are required in order to compile the ASL compiler and the | |
46 | * various ACPICA tools under Linux or other Unix-like system. | |
47 | */ | |
48 | #include <acpi/acpi.h> | |
49 | #include "accommon.h" | |
50 | #include "amlcode.h" | |
51 | #include "acparser.h" | |
52 | #include "acdebug.h" | |
53 | ||
54 | #include <stdio.h> | |
55 | #include <stdlib.h> | |
56 | #include <stdarg.h> | |
57 | #include <unistd.h> | |
58 | #include <sys/time.h> | |
59 | #include <semaphore.h> | |
60 | #include <pthread.h> | |
61 | #include <errno.h> | |
62 | ||
63 | #define _COMPONENT ACPI_OS_SERVICES | |
64 | ACPI_MODULE_NAME("osunixxf") | |
65 | ||
66 | u8 acpi_gbl_debug_timeout = FALSE; | |
67 | ||
68 | /* Upcalls to acpi_exec */ | |
69 | ||
70 | void | |
71 | ae_table_override(struct acpi_table_header *existing_table, | |
72 | struct acpi_table_header **new_table); | |
73 | ||
74 | typedef void *(*PTHREAD_CALLBACK) (void *); | |
75 | ||
76 | /* Buffer used by acpi_os_vprintf */ | |
77 | ||
78 | #define ACPI_VPRINTF_BUFFER_SIZE 512 | |
79 | #define _ASCII_NEWLINE '\n' | |
80 | ||
81 | /* Terminal support for acpi_exec only */ | |
82 | ||
83 | #ifdef ACPI_EXEC_APP | |
84 | #include <termios.h> | |
85 | ||
86 | struct termios original_term_attributes; | |
87 | int term_attributes_were_set = 0; | |
88 | ||
89 | acpi_status acpi_ut_read_line(char *buffer, u32 buffer_length, u32 *bytes_read); | |
90 | ||
91 | static void os_enter_line_edit_mode(void); | |
92 | ||
93 | static void os_exit_line_edit_mode(void); | |
94 | ||
95 | /****************************************************************************** | |
96 | * | |
97 | * FUNCTION: os_enter_line_edit_mode, os_exit_line_edit_mode | |
98 | * | |
99 | * PARAMETERS: None | |
100 | * | |
101 | * RETURN: None | |
102 | * | |
103 | * DESCRIPTION: Enter/Exit the raw character input mode for the terminal. | |
104 | * | |
105 | * Interactive line-editing support for the AML debugger. Used with the | |
106 | * common/acgetline module. | |
107 | * | |
108 | * readline() is not used because of non-portability. It is not available | |
109 | * on all systems, and if it is, often the package must be manually installed. | |
110 | * | |
111 | * Therefore, we use the POSIX tcgetattr/tcsetattr and do the minimal line | |
112 | * editing that we need in acpi_os_get_line. | |
113 | * | |
114 | * If the POSIX tcgetattr/tcsetattr interfaces are unavailable, these | |
115 | * calls will also work: | |
116 | * For os_enter_line_edit_mode: system ("stty cbreak -echo") | |
117 | * For os_exit_line_edit_mode: system ("stty cooked echo") | |
118 | * | |
119 | *****************************************************************************/ | |
120 | ||
121 | static void os_enter_line_edit_mode(void) | |
122 | { | |
123 | struct termios local_term_attributes; | |
124 | ||
63c9043b BM |
125 | term_attributes_were_set = 0; |
126 | ||
127 | /* STDIN must be a terminal */ | |
128 | ||
129 | if (!isatty(STDIN_FILENO)) { | |
130 | return; | |
131 | } | |
132 | ||
83b80bac LZ |
133 | /* Get and keep the original attributes */ |
134 | ||
135 | if (tcgetattr(STDIN_FILENO, &original_term_attributes)) { | |
136 | fprintf(stderr, "Could not get terminal attributes!\n"); | |
137 | return; | |
138 | } | |
139 | ||
140 | /* Set the new attributes to enable raw character input */ | |
141 | ||
142 | memcpy(&local_term_attributes, &original_term_attributes, | |
143 | sizeof(struct termios)); | |
144 | ||
145 | local_term_attributes.c_lflag &= ~(ICANON | ECHO); | |
146 | local_term_attributes.c_cc[VMIN] = 1; | |
147 | local_term_attributes.c_cc[VTIME] = 0; | |
148 | ||
149 | if (tcsetattr(STDIN_FILENO, TCSANOW, &local_term_attributes)) { | |
150 | fprintf(stderr, "Could not set terminal attributes!\n"); | |
151 | return; | |
152 | } | |
153 | ||
154 | term_attributes_were_set = 1; | |
155 | } | |
156 | ||
157 | static void os_exit_line_edit_mode(void) | |
158 | { | |
159 | ||
160 | if (!term_attributes_were_set) { | |
161 | return; | |
162 | } | |
163 | ||
164 | /* Set terminal attributes back to the original values */ | |
165 | ||
166 | if (tcsetattr(STDIN_FILENO, TCSANOW, &original_term_attributes)) { | |
167 | fprintf(stderr, "Could not restore terminal attributes!\n"); | |
168 | } | |
169 | } | |
170 | ||
171 | #else | |
172 | ||
173 | /* These functions are not needed for other ACPICA utilities */ | |
174 | ||
175 | #define os_enter_line_edit_mode() | |
176 | #define os_exit_line_edit_mode() | |
177 | #endif | |
178 | ||
179 | /****************************************************************************** | |
180 | * | |
181 | * FUNCTION: acpi_os_initialize, acpi_os_terminate | |
182 | * | |
183 | * PARAMETERS: None | |
184 | * | |
185 | * RETURN: Status | |
186 | * | |
187 | * DESCRIPTION: Initialize and terminate this module. | |
188 | * | |
189 | *****************************************************************************/ | |
190 | ||
191 | acpi_status acpi_os_initialize(void) | |
192 | { | |
80a648c1 | 193 | acpi_status status; |
83b80bac LZ |
194 | |
195 | acpi_gbl_output_file = stdout; | |
196 | ||
197 | os_enter_line_edit_mode(); | |
80a648c1 LZ |
198 | |
199 | status = acpi_os_create_lock(&acpi_gbl_print_lock); | |
200 | if (ACPI_FAILURE(status)) { | |
201 | return (status); | |
202 | } | |
203 | ||
83b80bac LZ |
204 | return (AE_OK); |
205 | } | |
206 | ||
207 | acpi_status acpi_os_terminate(void) | |
208 | { | |
209 | ||
210 | os_exit_line_edit_mode(); | |
211 | return (AE_OK); | |
212 | } | |
213 | ||
214 | #ifndef ACPI_USE_NATIVE_RSDP_POINTER | |
215 | /****************************************************************************** | |
216 | * | |
217 | * FUNCTION: acpi_os_get_root_pointer | |
218 | * | |
219 | * PARAMETERS: None | |
220 | * | |
221 | * RETURN: RSDP physical address | |
222 | * | |
223 | * DESCRIPTION: Gets the ACPI root pointer (RSDP) | |
224 | * | |
225 | *****************************************************************************/ | |
226 | ||
227 | acpi_physical_address acpi_os_get_root_pointer(void) | |
228 | { | |
229 | ||
230 | return (0); | |
231 | } | |
232 | #endif | |
233 | ||
234 | /****************************************************************************** | |
235 | * | |
236 | * FUNCTION: acpi_os_predefined_override | |
237 | * | |
238 | * PARAMETERS: init_val - Initial value of the predefined object | |
239 | * new_val - The new value for the object | |
240 | * | |
241 | * RETURN: Status, pointer to value. Null pointer returned if not | |
242 | * overriding. | |
243 | * | |
244 | * DESCRIPTION: Allow the OS to override predefined names | |
245 | * | |
246 | *****************************************************************************/ | |
247 | ||
248 | acpi_status | |
f5c1e1c5 LZ |
249 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
250 | acpi_string *new_val) | |
83b80bac LZ |
251 | { |
252 | ||
253 | if (!init_val || !new_val) { | |
254 | return (AE_BAD_PARAMETER); | |
255 | } | |
256 | ||
257 | *new_val = NULL; | |
258 | return (AE_OK); | |
259 | } | |
260 | ||
261 | /****************************************************************************** | |
262 | * | |
263 | * FUNCTION: acpi_os_table_override | |
264 | * | |
265 | * PARAMETERS: existing_table - Header of current table (probably | |
266 | * firmware) | |
267 | * new_table - Where an entire new table is returned. | |
268 | * | |
269 | * RETURN: Status, pointer to new table. Null pointer returned if no | |
270 | * table is available to override | |
271 | * | |
272 | * DESCRIPTION: Return a different version of a table if one is available | |
273 | * | |
274 | *****************************************************************************/ | |
275 | ||
276 | acpi_status | |
f5c1e1c5 LZ |
277 | acpi_os_table_override(struct acpi_table_header *existing_table, |
278 | struct acpi_table_header **new_table) | |
83b80bac LZ |
279 | { |
280 | ||
281 | if (!existing_table || !new_table) { | |
282 | return (AE_BAD_PARAMETER); | |
283 | } | |
284 | ||
285 | *new_table = NULL; | |
286 | ||
287 | #ifdef ACPI_EXEC_APP | |
288 | ||
289 | ae_table_override(existing_table, new_table); | |
290 | return (AE_OK); | |
291 | #else | |
292 | ||
293 | return (AE_NO_ACPI_TABLES); | |
294 | #endif | |
295 | } | |
296 | ||
297 | /****************************************************************************** | |
298 | * | |
299 | * FUNCTION: acpi_os_physical_table_override | |
300 | * | |
301 | * PARAMETERS: existing_table - Header of current table (probably firmware) | |
302 | * new_address - Where new table address is returned | |
303 | * (Physical address) | |
304 | * new_table_length - Where new table length is returned | |
305 | * | |
306 | * RETURN: Status, address/length of new table. Null pointer returned | |
307 | * if no table is available to override. | |
308 | * | |
309 | * DESCRIPTION: Returns AE_SUPPORT, function not used in user space. | |
310 | * | |
311 | *****************************************************************************/ | |
312 | ||
313 | acpi_status | |
f5c1e1c5 LZ |
314 | acpi_os_physical_table_override(struct acpi_table_header *existing_table, |
315 | acpi_physical_address *new_address, | |
83b80bac LZ |
316 | u32 *new_table_length) |
317 | { | |
318 | ||
319 | return (AE_SUPPORT); | |
320 | } | |
321 | ||
322 | /****************************************************************************** | |
323 | * | |
324 | * FUNCTION: acpi_os_redirect_output | |
325 | * | |
326 | * PARAMETERS: destination - An open file handle/pointer | |
327 | * | |
328 | * RETURN: None | |
329 | * | |
330 | * DESCRIPTION: Causes redirect of acpi_os_printf and acpi_os_vprintf | |
331 | * | |
332 | *****************************************************************************/ | |
333 | ||
334 | void acpi_os_redirect_output(void *destination) | |
335 | { | |
336 | ||
337 | acpi_gbl_output_file = destination; | |
338 | } | |
339 | ||
340 | /****************************************************************************** | |
341 | * | |
342 | * FUNCTION: acpi_os_printf | |
343 | * | |
344 | * PARAMETERS: fmt, ... - Standard printf format | |
345 | * | |
346 | * RETURN: None | |
347 | * | |
348 | * DESCRIPTION: Formatted output. Note: very similar to acpi_os_vprintf | |
349 | * (performance), changes should be tracked in both functions. | |
350 | * | |
351 | *****************************************************************************/ | |
352 | ||
353 | void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *fmt, ...) | |
354 | { | |
355 | va_list args; | |
356 | u8 flags; | |
357 | ||
358 | flags = acpi_gbl_db_output_flags; | |
359 | if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) { | |
360 | ||
361 | /* Output is directable to either a file (if open) or the console */ | |
362 | ||
363 | if (acpi_gbl_debug_file) { | |
364 | ||
365 | /* Output file is open, send the output there */ | |
366 | ||
367 | va_start(args, fmt); | |
368 | vfprintf(acpi_gbl_debug_file, fmt, args); | |
369 | va_end(args); | |
370 | } else { | |
371 | /* No redirection, send output to console (once only!) */ | |
372 | ||
373 | flags |= ACPI_DB_CONSOLE_OUTPUT; | |
374 | } | |
375 | } | |
376 | ||
377 | if (flags & ACPI_DB_CONSOLE_OUTPUT) { | |
378 | va_start(args, fmt); | |
379 | vfprintf(acpi_gbl_output_file, fmt, args); | |
380 | va_end(args); | |
381 | } | |
382 | } | |
383 | ||
384 | /****************************************************************************** | |
385 | * | |
386 | * FUNCTION: acpi_os_vprintf | |
387 | * | |
388 | * PARAMETERS: fmt - Standard printf format | |
389 | * args - Argument list | |
390 | * | |
391 | * RETURN: None | |
392 | * | |
393 | * DESCRIPTION: Formatted output with argument list pointer. Note: very | |
394 | * similar to acpi_os_printf, changes should be tracked in both | |
395 | * functions. | |
396 | * | |
397 | *****************************************************************************/ | |
398 | ||
399 | void acpi_os_vprintf(const char *fmt, va_list args) | |
400 | { | |
401 | u8 flags; | |
402 | char buffer[ACPI_VPRINTF_BUFFER_SIZE]; | |
403 | ||
404 | /* | |
405 | * We build the output string in a local buffer because we may be | |
406 | * outputting the buffer twice. Using vfprintf is problematic because | |
407 | * some implementations modify the args pointer/structure during | |
408 | * execution. Thus, we use the local buffer for portability. | |
409 | * | |
410 | * Note: Since this module is intended for use by the various ACPICA | |
411 | * utilities/applications, we can safely declare the buffer on the stack. | |
412 | * Also, This function is used for relatively small error messages only. | |
413 | */ | |
414 | vsnprintf(buffer, ACPI_VPRINTF_BUFFER_SIZE, fmt, args); | |
415 | ||
416 | flags = acpi_gbl_db_output_flags; | |
417 | if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) { | |
418 | ||
419 | /* Output is directable to either a file (if open) or the console */ | |
420 | ||
421 | if (acpi_gbl_debug_file) { | |
422 | ||
423 | /* Output file is open, send the output there */ | |
424 | ||
425 | fputs(buffer, acpi_gbl_debug_file); | |
426 | } else { | |
427 | /* No redirection, send output to console (once only!) */ | |
428 | ||
429 | flags |= ACPI_DB_CONSOLE_OUTPUT; | |
430 | } | |
431 | } | |
432 | ||
433 | if (flags & ACPI_DB_CONSOLE_OUTPUT) { | |
434 | fputs(buffer, acpi_gbl_output_file); | |
435 | } | |
436 | } | |
437 | ||
438 | #ifndef ACPI_EXEC_APP | |
439 | /****************************************************************************** | |
440 | * | |
441 | * FUNCTION: acpi_os_get_line | |
442 | * | |
443 | * PARAMETERS: buffer - Where to return the command line | |
444 | * buffer_length - Maximum length of Buffer | |
445 | * bytes_read - Where the actual byte count is returned | |
446 | * | |
447 | * RETURN: Status and actual bytes read | |
448 | * | |
449 | * DESCRIPTION: Get the next input line from the terminal. NOTE: For the | |
450 | * acpi_exec utility, we use the acgetline module instead to | |
451 | * provide line-editing and history support. | |
452 | * | |
453 | *****************************************************************************/ | |
454 | ||
455 | acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read) | |
456 | { | |
457 | int input_char; | |
458 | u32 end_of_line; | |
459 | ||
460 | /* Standard acpi_os_get_line for all utilities except acpi_exec */ | |
461 | ||
462 | for (end_of_line = 0;; end_of_line++) { | |
463 | if (end_of_line >= buffer_length) { | |
464 | return (AE_BUFFER_OVERFLOW); | |
465 | } | |
466 | ||
467 | if ((input_char = getchar()) == EOF) { | |
468 | return (AE_ERROR); | |
469 | } | |
470 | ||
471 | if (!input_char || input_char == _ASCII_NEWLINE) { | |
472 | break; | |
473 | } | |
474 | ||
475 | buffer[end_of_line] = (char)input_char; | |
476 | } | |
477 | ||
478 | /* Null terminate the buffer */ | |
479 | ||
480 | buffer[end_of_line] = 0; | |
481 | ||
482 | /* Return the number of bytes in the string */ | |
483 | ||
484 | if (bytes_read) { | |
485 | *bytes_read = end_of_line; | |
486 | } | |
487 | ||
488 | return (AE_OK); | |
489 | } | |
490 | #endif | |
491 | ||
492 | #ifndef ACPI_USE_NATIVE_MEMORY_MAPPING | |
493 | /****************************************************************************** | |
494 | * | |
495 | * FUNCTION: acpi_os_map_memory | |
496 | * | |
497 | * PARAMETERS: where - Physical address of memory to be mapped | |
498 | * length - How much memory to map | |
499 | * | |
500 | * RETURN: Pointer to mapped memory. Null on error. | |
501 | * | |
502 | * DESCRIPTION: Map physical memory into caller's address space | |
503 | * | |
504 | *****************************************************************************/ | |
505 | ||
506 | void *acpi_os_map_memory(acpi_physical_address where, acpi_size length) | |
507 | { | |
508 | ||
f5c1e1c5 | 509 | return (ACPI_TO_POINTER((acpi_size)where)); |
83b80bac LZ |
510 | } |
511 | ||
512 | /****************************************************************************** | |
513 | * | |
514 | * FUNCTION: acpi_os_unmap_memory | |
515 | * | |
516 | * PARAMETERS: where - Logical address of memory to be unmapped | |
517 | * length - How much memory to unmap | |
518 | * | |
519 | * RETURN: None. | |
520 | * | |
521 | * DESCRIPTION: Delete a previously created mapping. Where and Length must | |
522 | * correspond to a previous mapping exactly. | |
523 | * | |
524 | *****************************************************************************/ | |
525 | ||
526 | void acpi_os_unmap_memory(void *where, acpi_size length) | |
527 | { | |
528 | ||
529 | return; | |
530 | } | |
531 | #endif | |
532 | ||
533 | /****************************************************************************** | |
534 | * | |
535 | * FUNCTION: acpi_os_allocate | |
536 | * | |
537 | * PARAMETERS: size - Amount to allocate, in bytes | |
538 | * | |
539 | * RETURN: Pointer to the new allocation. Null on error. | |
540 | * | |
541 | * DESCRIPTION: Allocate memory. Algorithm is dependent on the OS. | |
542 | * | |
543 | *****************************************************************************/ | |
544 | ||
545 | void *acpi_os_allocate(acpi_size size) | |
546 | { | |
547 | void *mem; | |
548 | ||
549 | mem = (void *)malloc((size_t) size); | |
550 | return (mem); | |
551 | } | |
552 | ||
553 | #ifdef USE_NATIVE_ALLOCATE_ZEROED | |
554 | /****************************************************************************** | |
555 | * | |
556 | * FUNCTION: acpi_os_allocate_zeroed | |
557 | * | |
558 | * PARAMETERS: size - Amount to allocate, in bytes | |
559 | * | |
560 | * RETURN: Pointer to the new allocation. Null on error. | |
561 | * | |
562 | * DESCRIPTION: Allocate and zero memory. Algorithm is dependent on the OS. | |
563 | * | |
564 | *****************************************************************************/ | |
565 | ||
566 | void *acpi_os_allocate_zeroed(acpi_size size) | |
567 | { | |
568 | void *mem; | |
569 | ||
570 | mem = (void *)calloc(1, (size_t) size); | |
571 | return (mem); | |
572 | } | |
573 | #endif | |
574 | ||
575 | /****************************************************************************** | |
576 | * | |
577 | * FUNCTION: acpi_os_free | |
578 | * | |
579 | * PARAMETERS: mem - Pointer to previously allocated memory | |
580 | * | |
581 | * RETURN: None. | |
582 | * | |
583 | * DESCRIPTION: Free memory allocated via acpi_os_allocate | |
584 | * | |
585 | *****************************************************************************/ | |
586 | ||
587 | void acpi_os_free(void *mem) | |
588 | { | |
589 | ||
590 | free(mem); | |
591 | } | |
592 | ||
593 | #ifdef ACPI_SINGLE_THREADED | |
594 | /****************************************************************************** | |
595 | * | |
596 | * FUNCTION: Semaphore stub functions | |
597 | * | |
598 | * DESCRIPTION: Stub functions used for single-thread applications that do | |
599 | * not require semaphore synchronization. Full implementations | |
600 | * of these functions appear after the stubs. | |
601 | * | |
602 | *****************************************************************************/ | |
603 | ||
604 | acpi_status | |
605 | acpi_os_create_semaphore(u32 max_units, | |
f5c1e1c5 | 606 | u32 initial_units, acpi_handle *out_handle) |
83b80bac | 607 | { |
f5c1e1c5 | 608 | *out_handle = (acpi_handle)1; |
83b80bac LZ |
609 | return (AE_OK); |
610 | } | |
611 | ||
612 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) | |
613 | { | |
614 | return (AE_OK); | |
615 | } | |
616 | ||
617 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) | |
618 | { | |
619 | return (AE_OK); | |
620 | } | |
621 | ||
622 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) | |
623 | { | |
624 | return (AE_OK); | |
625 | } | |
626 | ||
627 | #else | |
628 | /****************************************************************************** | |
629 | * | |
630 | * FUNCTION: acpi_os_create_semaphore | |
631 | * | |
632 | * PARAMETERS: initial_units - Units to be assigned to the new semaphore | |
633 | * out_handle - Where a handle will be returned | |
634 | * | |
635 | * RETURN: Status | |
636 | * | |
637 | * DESCRIPTION: Create an OS semaphore | |
638 | * | |
639 | *****************************************************************************/ | |
640 | ||
641 | acpi_status | |
642 | acpi_os_create_semaphore(u32 max_units, | |
f5c1e1c5 | 643 | u32 initial_units, acpi_handle *out_handle) |
83b80bac LZ |
644 | { |
645 | sem_t *sem; | |
646 | ||
647 | if (!out_handle) { | |
648 | return (AE_BAD_PARAMETER); | |
649 | } | |
650 | #ifdef __APPLE__ | |
651 | { | |
652 | char *semaphore_name = tmpnam(NULL); | |
653 | ||
654 | sem = | |
655 | sem_open(semaphore_name, O_EXCL | O_CREAT, 0755, | |
656 | initial_units); | |
657 | if (!sem) { | |
658 | return (AE_NO_MEMORY); | |
659 | } | |
660 | sem_unlink(semaphore_name); /* This just deletes the name */ | |
661 | } | |
662 | ||
663 | #else | |
664 | sem = acpi_os_allocate(sizeof(sem_t)); | |
665 | if (!sem) { | |
666 | return (AE_NO_MEMORY); | |
667 | } | |
668 | ||
669 | if (sem_init(sem, 0, initial_units) == -1) { | |
670 | acpi_os_free(sem); | |
671 | return (AE_BAD_PARAMETER); | |
672 | } | |
673 | #endif | |
674 | ||
f5c1e1c5 | 675 | *out_handle = (acpi_handle)sem; |
83b80bac LZ |
676 | return (AE_OK); |
677 | } | |
678 | ||
679 | /****************************************************************************** | |
680 | * | |
681 | * FUNCTION: acpi_os_delete_semaphore | |
682 | * | |
683 | * PARAMETERS: handle - Handle returned by acpi_os_create_semaphore | |
684 | * | |
685 | * RETURN: Status | |
686 | * | |
687 | * DESCRIPTION: Delete an OS semaphore | |
688 | * | |
689 | *****************************************************************************/ | |
690 | ||
691 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) | |
692 | { | |
693 | sem_t *sem = (sem_t *) handle; | |
694 | ||
695 | if (!sem) { | |
696 | return (AE_BAD_PARAMETER); | |
697 | } | |
698 | ||
699 | if (sem_destroy(sem) == -1) { | |
700 | return (AE_BAD_PARAMETER); | |
701 | } | |
702 | ||
703 | return (AE_OK); | |
704 | } | |
705 | ||
706 | /****************************************************************************** | |
707 | * | |
708 | * FUNCTION: acpi_os_wait_semaphore | |
709 | * | |
710 | * PARAMETERS: handle - Handle returned by acpi_os_create_semaphore | |
711 | * units - How many units to wait for | |
712 | * msec_timeout - How long to wait (milliseconds) | |
713 | * | |
714 | * RETURN: Status | |
715 | * | |
716 | * DESCRIPTION: Wait for units | |
717 | * | |
718 | *****************************************************************************/ | |
719 | ||
720 | acpi_status | |
721 | acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 msec_timeout) | |
722 | { | |
723 | acpi_status status = AE_OK; | |
724 | sem_t *sem = (sem_t *) handle; | |
725 | #ifndef ACPI_USE_ALTERNATE_TIMEOUT | |
726 | struct timespec time; | |
727 | int ret_val; | |
728 | #endif | |
729 | ||
730 | if (!sem) { | |
731 | return (AE_BAD_PARAMETER); | |
732 | } | |
733 | ||
734 | switch (msec_timeout) { | |
735 | /* | |
736 | * No Wait: | |
737 | * -------- | |
738 | * A zero timeout value indicates that we shouldn't wait - just | |
739 | * acquire the semaphore if available otherwise return AE_TIME | |
740 | * (a.k.a. 'would block'). | |
741 | */ | |
742 | case 0: | |
743 | ||
744 | if (sem_trywait(sem) == -1) { | |
745 | status = (AE_TIME); | |
746 | } | |
747 | break; | |
748 | ||
749 | /* Wait Indefinitely */ | |
750 | ||
751 | case ACPI_WAIT_FOREVER: | |
752 | ||
753 | if (sem_wait(sem)) { | |
754 | status = (AE_TIME); | |
755 | } | |
756 | break; | |
757 | ||
758 | /* Wait with msec_timeout */ | |
759 | ||
760 | default: | |
761 | ||
762 | #ifdef ACPI_USE_ALTERNATE_TIMEOUT | |
763 | /* | |
764 | * Alternate timeout mechanism for environments where | |
765 | * sem_timedwait is not available or does not work properly. | |
766 | */ | |
767 | while (msec_timeout) { | |
768 | if (sem_trywait(sem) == 0) { | |
769 | ||
770 | /* Got the semaphore */ | |
771 | return (AE_OK); | |
772 | } | |
773 | ||
774 | if (msec_timeout >= 10) { | |
775 | msec_timeout -= 10; | |
776 | usleep(10 * ACPI_USEC_PER_MSEC); /* ten milliseconds */ | |
777 | } else { | |
778 | msec_timeout--; | |
779 | usleep(ACPI_USEC_PER_MSEC); /* one millisecond */ | |
780 | } | |
781 | } | |
782 | status = (AE_TIME); | |
783 | #else | |
784 | /* | |
785 | * The interface to sem_timedwait is an absolute time, so we need to | |
786 | * get the current time, then add in the millisecond Timeout value. | |
787 | */ | |
788 | if (clock_gettime(CLOCK_REALTIME, &time) == -1) { | |
789 | perror("clock_gettime"); | |
790 | return (AE_TIME); | |
791 | } | |
792 | ||
793 | time.tv_sec += (msec_timeout / ACPI_MSEC_PER_SEC); | |
794 | time.tv_nsec += | |
795 | ((msec_timeout % ACPI_MSEC_PER_SEC) * ACPI_NSEC_PER_MSEC); | |
796 | ||
797 | /* Handle nanosecond overflow (field must be less than one second) */ | |
798 | ||
799 | if (time.tv_nsec >= ACPI_NSEC_PER_SEC) { | |
800 | time.tv_sec += (time.tv_nsec / ACPI_NSEC_PER_SEC); | |
801 | time.tv_nsec = (time.tv_nsec % ACPI_NSEC_PER_SEC); | |
802 | } | |
803 | ||
804 | while (((ret_val = sem_timedwait(sem, &time)) == -1) | |
805 | && (errno == EINTR)) { | |
806 | continue; | |
807 | } | |
808 | ||
809 | if (ret_val != 0) { | |
810 | if (errno != ETIMEDOUT) { | |
811 | perror("sem_timedwait"); | |
812 | } | |
813 | status = (AE_TIME); | |
814 | } | |
815 | #endif | |
816 | break; | |
817 | } | |
818 | ||
819 | return (status); | |
820 | } | |
821 | ||
822 | /****************************************************************************** | |
823 | * | |
824 | * FUNCTION: acpi_os_signal_semaphore | |
825 | * | |
826 | * PARAMETERS: handle - Handle returned by acpi_os_create_semaphore | |
827 | * units - Number of units to send | |
828 | * | |
829 | * RETURN: Status | |
830 | * | |
831 | * DESCRIPTION: Send units | |
832 | * | |
833 | *****************************************************************************/ | |
834 | ||
835 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) | |
836 | { | |
837 | sem_t *sem = (sem_t *) handle; | |
838 | ||
839 | if (!sem) { | |
840 | return (AE_BAD_PARAMETER); | |
841 | } | |
842 | ||
843 | if (sem_post(sem) == -1) { | |
844 | return (AE_LIMIT); | |
845 | } | |
846 | ||
847 | return (AE_OK); | |
848 | } | |
849 | ||
850 | #endif /* ACPI_SINGLE_THREADED */ | |
851 | ||
852 | /****************************************************************************** | |
853 | * | |
854 | * FUNCTION: Spinlock interfaces | |
855 | * | |
856 | * DESCRIPTION: Map these interfaces to semaphore interfaces | |
857 | * | |
858 | *****************************************************************************/ | |
859 | ||
860 | acpi_status acpi_os_create_lock(acpi_spinlock * out_handle) | |
861 | { | |
862 | ||
863 | return (acpi_os_create_semaphore(1, 1, out_handle)); | |
864 | } | |
865 | ||
866 | void acpi_os_delete_lock(acpi_spinlock handle) | |
867 | { | |
868 | acpi_os_delete_semaphore(handle); | |
869 | } | |
870 | ||
871 | acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle) | |
872 | { | |
873 | acpi_os_wait_semaphore(handle, 1, 0xFFFF); | |
874 | return (0); | |
875 | } | |
876 | ||
877 | void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags) | |
878 | { | |
879 | acpi_os_signal_semaphore(handle, 1); | |
880 | } | |
881 | ||
882 | /****************************************************************************** | |
883 | * | |
884 | * FUNCTION: acpi_os_install_interrupt_handler | |
885 | * | |
886 | * PARAMETERS: interrupt_number - Level handler should respond to. | |
887 | * isr - Address of the ACPI interrupt handler | |
888 | * except_ptr - Where status is returned | |
889 | * | |
890 | * RETURN: Handle to the newly installed handler. | |
891 | * | |
892 | * DESCRIPTION: Install an interrupt handler. Used to install the ACPI | |
893 | * OS-independent handler. | |
894 | * | |
895 | *****************************************************************************/ | |
896 | ||
897 | u32 | |
898 | acpi_os_install_interrupt_handler(u32 interrupt_number, | |
899 | acpi_osd_handler service_routine, | |
900 | void *context) | |
901 | { | |
902 | ||
903 | return (AE_OK); | |
904 | } | |
905 | ||
906 | /****************************************************************************** | |
907 | * | |
908 | * FUNCTION: acpi_os_remove_interrupt_handler | |
909 | * | |
910 | * PARAMETERS: handle - Returned when handler was installed | |
911 | * | |
912 | * RETURN: Status | |
913 | * | |
914 | * DESCRIPTION: Uninstalls an interrupt handler. | |
915 | * | |
916 | *****************************************************************************/ | |
917 | ||
918 | acpi_status | |
919 | acpi_os_remove_interrupt_handler(u32 interrupt_number, | |
920 | acpi_osd_handler service_routine) | |
921 | { | |
922 | ||
923 | return (AE_OK); | |
924 | } | |
925 | ||
926 | /****************************************************************************** | |
927 | * | |
928 | * FUNCTION: acpi_os_stall | |
929 | * | |
930 | * PARAMETERS: microseconds - Time to sleep | |
931 | * | |
932 | * RETURN: Blocks until sleep is completed. | |
933 | * | |
934 | * DESCRIPTION: Sleep at microsecond granularity | |
935 | * | |
936 | *****************************************************************************/ | |
937 | ||
938 | void acpi_os_stall(u32 microseconds) | |
939 | { | |
940 | ||
941 | if (microseconds) { | |
942 | usleep(microseconds); | |
943 | } | |
944 | } | |
945 | ||
946 | /****************************************************************************** | |
947 | * | |
948 | * FUNCTION: acpi_os_sleep | |
949 | * | |
950 | * PARAMETERS: milliseconds - Time to sleep | |
951 | * | |
952 | * RETURN: Blocks until sleep is completed. | |
953 | * | |
954 | * DESCRIPTION: Sleep at millisecond granularity | |
955 | * | |
956 | *****************************************************************************/ | |
957 | ||
958 | void acpi_os_sleep(u64 milliseconds) | |
959 | { | |
960 | ||
961 | /* Sleep for whole seconds */ | |
962 | ||
963 | sleep(milliseconds / ACPI_MSEC_PER_SEC); | |
964 | ||
965 | /* | |
966 | * Sleep for remaining microseconds. | |
967 | * Arg to usleep() is in usecs and must be less than 1,000,000 (1 second). | |
968 | */ | |
969 | usleep((milliseconds % ACPI_MSEC_PER_SEC) * ACPI_USEC_PER_MSEC); | |
970 | } | |
971 | ||
972 | /****************************************************************************** | |
973 | * | |
974 | * FUNCTION: acpi_os_get_timer | |
975 | * | |
976 | * PARAMETERS: None | |
977 | * | |
978 | * RETURN: Current time in 100 nanosecond units | |
979 | * | |
980 | * DESCRIPTION: Get the current system time | |
981 | * | |
982 | *****************************************************************************/ | |
983 | ||
984 | u64 acpi_os_get_timer(void) | |
985 | { | |
986 | struct timeval time; | |
987 | ||
988 | /* This timer has sufficient resolution for user-space application code */ | |
989 | ||
990 | gettimeofday(&time, NULL); | |
991 | ||
992 | /* (Seconds * 10^7 = 100ns(10^-7)) + (Microseconds(10^-6) * 10^1 = 100ns) */ | |
993 | ||
994 | return (((u64)time.tv_sec * ACPI_100NSEC_PER_SEC) + | |
995 | ((u64)time.tv_usec * ACPI_100NSEC_PER_USEC)); | |
996 | } | |
997 | ||
998 | /****************************************************************************** | |
999 | * | |
1000 | * FUNCTION: acpi_os_read_pci_configuration | |
1001 | * | |
1002 | * PARAMETERS: pci_id - Seg/Bus/Dev | |
1003 | * pci_register - Device Register | |
1004 | * value - Buffer where value is placed | |
1005 | * width - Number of bits | |
1006 | * | |
1007 | * RETURN: Status | |
1008 | * | |
1009 | * DESCRIPTION: Read data from PCI configuration space | |
1010 | * | |
1011 | *****************************************************************************/ | |
1012 | ||
1013 | acpi_status | |
1014 | acpi_os_read_pci_configuration(struct acpi_pci_id *pci_id, | |
1015 | u32 pci_register, u64 *value, u32 width) | |
1016 | { | |
1017 | ||
1018 | *value = 0; | |
1019 | return (AE_OK); | |
1020 | } | |
1021 | ||
1022 | /****************************************************************************** | |
1023 | * | |
1024 | * FUNCTION: acpi_os_write_pci_configuration | |
1025 | * | |
1026 | * PARAMETERS: pci_id - Seg/Bus/Dev | |
1027 | * pci_register - Device Register | |
1028 | * value - Value to be written | |
1029 | * width - Number of bits | |
1030 | * | |
1031 | * RETURN: Status. | |
1032 | * | |
1033 | * DESCRIPTION: Write data to PCI configuration space | |
1034 | * | |
1035 | *****************************************************************************/ | |
1036 | ||
1037 | acpi_status | |
f5c1e1c5 | 1038 | acpi_os_write_pci_configuration(struct acpi_pci_id *pci_id, |
83b80bac LZ |
1039 | u32 pci_register, u64 value, u32 width) |
1040 | { | |
1041 | ||
1042 | return (AE_OK); | |
1043 | } | |
1044 | ||
1045 | /****************************************************************************** | |
1046 | * | |
1047 | * FUNCTION: acpi_os_read_port | |
1048 | * | |
1049 | * PARAMETERS: address - Address of I/O port/register to read | |
1050 | * value - Where value is placed | |
1051 | * width - Number of bits | |
1052 | * | |
1053 | * RETURN: Value read from port | |
1054 | * | |
1055 | * DESCRIPTION: Read data from an I/O port or register | |
1056 | * | |
1057 | *****************************************************************************/ | |
1058 | ||
1059 | acpi_status acpi_os_read_port(acpi_io_address address, u32 *value, u32 width) | |
1060 | { | |
1061 | ||
1062 | switch (width) { | |
1063 | case 8: | |
1064 | ||
1065 | *value = 0xFF; | |
1066 | break; | |
1067 | ||
1068 | case 16: | |
1069 | ||
1070 | *value = 0xFFFF; | |
1071 | break; | |
1072 | ||
1073 | case 32: | |
1074 | ||
1075 | *value = 0xFFFFFFFF; | |
1076 | break; | |
1077 | ||
1078 | default: | |
1079 | ||
1080 | return (AE_BAD_PARAMETER); | |
1081 | } | |
1082 | ||
1083 | return (AE_OK); | |
1084 | } | |
1085 | ||
1086 | /****************************************************************************** | |
1087 | * | |
1088 | * FUNCTION: acpi_os_write_port | |
1089 | * | |
1090 | * PARAMETERS: address - Address of I/O port/register to write | |
1091 | * value - Value to write | |
1092 | * width - Number of bits | |
1093 | * | |
1094 | * RETURN: None | |
1095 | * | |
1096 | * DESCRIPTION: Write data to an I/O port or register | |
1097 | * | |
1098 | *****************************************************************************/ | |
1099 | ||
1100 | acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width) | |
1101 | { | |
1102 | ||
1103 | return (AE_OK); | |
1104 | } | |
1105 | ||
1106 | /****************************************************************************** | |
1107 | * | |
1108 | * FUNCTION: acpi_os_read_memory | |
1109 | * | |
1110 | * PARAMETERS: address - Physical Memory Address to read | |
1111 | * value - Where value is placed | |
1112 | * width - Number of bits (8,16,32, or 64) | |
1113 | * | |
1114 | * RETURN: Value read from physical memory address. Always returned | |
1115 | * as a 64-bit integer, regardless of the read width. | |
1116 | * | |
1117 | * DESCRIPTION: Read data from a physical memory address | |
1118 | * | |
1119 | *****************************************************************************/ | |
1120 | ||
1121 | acpi_status | |
1122 | acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width) | |
1123 | { | |
1124 | ||
1125 | switch (width) { | |
1126 | case 8: | |
1127 | case 16: | |
1128 | case 32: | |
1129 | case 64: | |
1130 | ||
1131 | *value = 0; | |
1132 | break; | |
1133 | ||
1134 | default: | |
1135 | ||
1136 | return (AE_BAD_PARAMETER); | |
1137 | } | |
1138 | return (AE_OK); | |
1139 | } | |
1140 | ||
1141 | /****************************************************************************** | |
1142 | * | |
1143 | * FUNCTION: acpi_os_write_memory | |
1144 | * | |
1145 | * PARAMETERS: address - Physical Memory Address to write | |
1146 | * value - Value to write | |
1147 | * width - Number of bits (8,16,32, or 64) | |
1148 | * | |
1149 | * RETURN: None | |
1150 | * | |
1151 | * DESCRIPTION: Write data to a physical memory address | |
1152 | * | |
1153 | *****************************************************************************/ | |
1154 | ||
1155 | acpi_status | |
1156 | acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width) | |
1157 | { | |
1158 | ||
1159 | return (AE_OK); | |
1160 | } | |
1161 | ||
1162 | /****************************************************************************** | |
1163 | * | |
1164 | * FUNCTION: acpi_os_readable | |
1165 | * | |
1166 | * PARAMETERS: pointer - Area to be verified | |
1167 | * length - Size of area | |
1168 | * | |
1169 | * RETURN: TRUE if readable for entire length | |
1170 | * | |
1171 | * DESCRIPTION: Verify that a pointer is valid for reading | |
1172 | * | |
1173 | *****************************************************************************/ | |
1174 | ||
1175 | u8 acpi_os_readable(void *pointer, acpi_size length) | |
1176 | { | |
1177 | ||
1178 | return (TRUE); | |
1179 | } | |
1180 | ||
1181 | /****************************************************************************** | |
1182 | * | |
1183 | * FUNCTION: acpi_os_writable | |
1184 | * | |
1185 | * PARAMETERS: pointer - Area to be verified | |
1186 | * length - Size of area | |
1187 | * | |
1188 | * RETURN: TRUE if writable for entire length | |
1189 | * | |
1190 | * DESCRIPTION: Verify that a pointer is valid for writing | |
1191 | * | |
1192 | *****************************************************************************/ | |
1193 | ||
1194 | u8 acpi_os_writable(void *pointer, acpi_size length) | |
1195 | { | |
1196 | ||
1197 | return (TRUE); | |
1198 | } | |
1199 | ||
1200 | /****************************************************************************** | |
1201 | * | |
1202 | * FUNCTION: acpi_os_signal | |
1203 | * | |
1204 | * PARAMETERS: function - ACPI A signal function code | |
1205 | * info - Pointer to function-dependent structure | |
1206 | * | |
1207 | * RETURN: Status | |
1208 | * | |
1209 | * DESCRIPTION: Miscellaneous functions. Example implementation only. | |
1210 | * | |
1211 | *****************************************************************************/ | |
1212 | ||
1213 | acpi_status acpi_os_signal(u32 function, void *info) | |
1214 | { | |
1215 | ||
1216 | switch (function) { | |
1217 | case ACPI_SIGNAL_FATAL: | |
1218 | ||
1219 | break; | |
1220 | ||
1221 | case ACPI_SIGNAL_BREAKPOINT: | |
1222 | ||
1223 | break; | |
1224 | ||
1225 | default: | |
1226 | ||
1227 | break; | |
1228 | } | |
1229 | ||
1230 | return (AE_OK); | |
1231 | } | |
1232 | ||
1233 | /* Optional multi-thread support */ | |
1234 | ||
1235 | #ifndef ACPI_SINGLE_THREADED | |
1236 | /****************************************************************************** | |
1237 | * | |
1238 | * FUNCTION: acpi_os_get_thread_id | |
1239 | * | |
1240 | * PARAMETERS: None | |
1241 | * | |
1242 | * RETURN: Id of the running thread | |
1243 | * | |
1244 | * DESCRIPTION: Get the ID of the current (running) thread | |
1245 | * | |
1246 | *****************************************************************************/ | |
1247 | ||
1248 | acpi_thread_id acpi_os_get_thread_id(void) | |
1249 | { | |
1250 | pthread_t thread; | |
1251 | ||
1252 | thread = pthread_self(); | |
1253 | return (ACPI_CAST_PTHREAD_T(thread)); | |
1254 | } | |
1255 | ||
1256 | /****************************************************************************** | |
1257 | * | |
1258 | * FUNCTION: acpi_os_execute | |
1259 | * | |
1260 | * PARAMETERS: type - Type of execution | |
1261 | * function - Address of the function to execute | |
1262 | * context - Passed as a parameter to the function | |
1263 | * | |
1264 | * RETURN: Status. | |
1265 | * | |
1266 | * DESCRIPTION: Execute a new thread | |
1267 | * | |
1268 | *****************************************************************************/ | |
1269 | ||
1270 | acpi_status | |
1271 | acpi_os_execute(acpi_execute_type type, | |
1272 | acpi_osd_exec_callback function, void *context) | |
1273 | { | |
1274 | pthread_t thread; | |
1275 | int ret; | |
1276 | ||
1277 | ret = | |
1278 | pthread_create(&thread, NULL, (PTHREAD_CALLBACK) function, context); | |
1279 | if (ret) { | |
1280 | acpi_os_printf("Create thread failed"); | |
1281 | } | |
1282 | return (0); | |
1283 | } | |
1284 | ||
1285 | #else /* ACPI_SINGLE_THREADED */ | |
1286 | acpi_thread_id acpi_os_get_thread_id(void) | |
1287 | { | |
1288 | return (1); | |
1289 | } | |
1290 | ||
1291 | acpi_status | |
1292 | acpi_os_execute(acpi_execute_type type, | |
1293 | acpi_osd_exec_callback function, void *context) | |
1294 | { | |
1295 | ||
1296 | function(context); | |
1297 | ||
1298 | return (AE_OK); | |
1299 | } | |
1300 | ||
1301 | #endif /* ACPI_SINGLE_THREADED */ | |
1302 | ||
1303 | /****************************************************************************** | |
1304 | * | |
1305 | * FUNCTION: acpi_os_wait_events_complete | |
1306 | * | |
1307 | * PARAMETERS: None | |
1308 | * | |
1309 | * RETURN: None | |
1310 | * | |
1311 | * DESCRIPTION: Wait for all asynchronous events to complete. This | |
1312 | * implementation does nothing. | |
1313 | * | |
1314 | *****************************************************************************/ | |
1315 | ||
1316 | void acpi_os_wait_events_complete(void) | |
1317 | { | |
1318 | return; | |
1319 | } |