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