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1da177e4 LT |
1 | /* |
2 | * acpi_osl.c - OS-dependent functions ($Revision: 83 $) | |
3 | * | |
4 | * Copyright (C) 2000 Andrew Henroid | |
5 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> | |
6 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
7 | * | |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | * | |
26 | */ | |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | #include <linux/kernel.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/pci.h> | |
33 | #include <linux/smp_lock.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/kmod.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/workqueue.h> | |
38 | #include <linux/nmi.h> | |
ad71860a | 39 | #include <linux/acpi.h> |
1da177e4 LT |
40 | #include <acpi/acpi.h> |
41 | #include <asm/io.h> | |
42 | #include <acpi/acpi_bus.h> | |
43 | #include <acpi/processor.h> | |
44 | #include <asm/uaccess.h> | |
45 | ||
46 | #include <linux/efi.h> | |
47 | ||
1da177e4 | 48 | #define _COMPONENT ACPI_OS_SERVICES |
f52fd66d | 49 | ACPI_MODULE_NAME("osl"); |
1da177e4 | 50 | #define PREFIX "ACPI: " |
4be44fcd LB |
51 | struct acpi_os_dpc { |
52 | acpi_osd_exec_callback function; | |
53 | void *context; | |
65f27f38 | 54 | struct work_struct work; |
1da177e4 LT |
55 | }; |
56 | ||
57 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
58 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE | |
59 | #endif | |
60 | ||
61 | #ifdef ENABLE_DEBUGGER | |
62 | #include <linux/kdb.h> | |
63 | ||
64 | /* stuff for debugger support */ | |
65 | int acpi_in_debugger; | |
66 | EXPORT_SYMBOL(acpi_in_debugger); | |
67 | ||
68 | extern char line_buf[80]; | |
4be44fcd | 69 | #endif /*ENABLE_DEBUGGER */ |
1da177e4 LT |
70 | |
71 | static unsigned int acpi_irq_irq; | |
72 | static acpi_osd_handler acpi_irq_handler; | |
73 | static void *acpi_irq_context; | |
74 | static struct workqueue_struct *kacpid_wq; | |
75 | ||
9a47cdb1 BH |
76 | static void __init acpi_request_region (struct acpi_generic_address *addr, |
77 | unsigned int length, char *desc) | |
78 | { | |
79 | struct resource *res; | |
80 | ||
81 | if (!addr->address || !length) | |
82 | return; | |
83 | ||
eee3c859 | 84 | if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
9a47cdb1 | 85 | res = request_region(addr->address, length, desc); |
eee3c859 | 86 | else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
9a47cdb1 BH |
87 | res = request_mem_region(addr->address, length, desc); |
88 | } | |
89 | ||
90 | static int __init acpi_reserve_resources(void) | |
91 | { | |
eee3c859 | 92 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
93 | "ACPI PM1a_EVT_BLK"); |
94 | ||
eee3c859 | 95 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
96 | "ACPI PM1b_EVT_BLK"); |
97 | ||
eee3c859 | 98 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
99 | "ACPI PM1a_CNT_BLK"); |
100 | ||
eee3c859 | 101 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
102 | "ACPI PM1b_CNT_BLK"); |
103 | ||
eee3c859 LB |
104 | if (acpi_gbl_FADT.pm_timer_length == 4) |
105 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 106 | |
eee3c859 | 107 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
108 | "ACPI PM2_CNT_BLK"); |
109 | ||
110 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
111 | ||
eee3c859 LB |
112 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
113 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
114 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 115 | |
eee3c859 LB |
116 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
117 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
118 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
119 | |
120 | return 0; | |
121 | } | |
122 | device_initcall(acpi_reserve_resources); | |
123 | ||
4be44fcd | 124 | acpi_status acpi_os_initialize(void) |
1da177e4 LT |
125 | { |
126 | return AE_OK; | |
127 | } | |
128 | ||
4be44fcd | 129 | acpi_status acpi_os_initialize1(void) |
1da177e4 LT |
130 | { |
131 | /* | |
132 | * Initialize PCI configuration space access, as we'll need to access | |
133 | * it while walking the namespace (bus 0 and root bridges w/ _BBNs). | |
134 | */ | |
1da177e4 | 135 | if (!raw_pci_ops) { |
4be44fcd LB |
136 | printk(KERN_ERR PREFIX |
137 | "Access to PCI configuration space unavailable\n"); | |
1da177e4 LT |
138 | return AE_NULL_ENTRY; |
139 | } | |
1da177e4 LT |
140 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
141 | BUG_ON(!kacpid_wq); | |
b976fe19 | 142 | |
1da177e4 LT |
143 | return AE_OK; |
144 | } | |
145 | ||
4be44fcd | 146 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
147 | { |
148 | if (acpi_irq_handler) { | |
149 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
150 | acpi_irq_handler); | |
151 | } | |
152 | ||
153 | destroy_workqueue(kacpid_wq); | |
154 | ||
155 | return AE_OK; | |
156 | } | |
157 | ||
4be44fcd | 158 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
159 | { |
160 | va_list args; | |
161 | va_start(args, fmt); | |
162 | acpi_os_vprintf(fmt, args); | |
163 | va_end(args); | |
164 | } | |
4be44fcd | 165 | |
1da177e4 LT |
166 | EXPORT_SYMBOL(acpi_os_printf); |
167 | ||
4be44fcd | 168 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
169 | { |
170 | static char buffer[512]; | |
4be44fcd | 171 | |
1da177e4 LT |
172 | vsprintf(buffer, fmt, args); |
173 | ||
174 | #ifdef ENABLE_DEBUGGER | |
175 | if (acpi_in_debugger) { | |
176 | kdb_printf("%s", buffer); | |
177 | } else { | |
178 | printk("%s", buffer); | |
179 | } | |
180 | #else | |
181 | printk("%s", buffer); | |
182 | #endif | |
183 | } | |
184 | ||
ad71860a | 185 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
186 | { |
187 | if (efi_enabled) { | |
b2c99e3c | 188 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 189 | return efi.acpi20; |
b2c99e3c | 190 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 191 | return efi.acpi; |
1da177e4 | 192 | else { |
4be44fcd LB |
193 | printk(KERN_ERR PREFIX |
194 | "System description tables not found\n"); | |
ad71860a | 195 | return 0; |
1da177e4 | 196 | } |
ad71860a AS |
197 | } else |
198 | return acpi_find_rsdp(); | |
1da177e4 LT |
199 | } |
200 | ||
ad71860a | 201 | void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
1da177e4 | 202 | { |
9f4fd61f BH |
203 | if (phys > ULONG_MAX) { |
204 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 205 | return NULL; |
1da177e4 | 206 | } |
ad71860a AS |
207 | if (acpi_gbl_permanent_mmap) |
208 | /* | |
209 | * ioremap checks to ensure this is in reserved space | |
210 | */ | |
211 | return ioremap((unsigned long)phys, size); | |
212 | else | |
213 | return __acpi_map_table((unsigned long)phys, size); | |
1da177e4 | 214 | } |
55a82ab3 | 215 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 216 | |
4be44fcd | 217 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
1da177e4 | 218 | { |
ad71860a AS |
219 | if (acpi_gbl_permanent_mmap) { |
220 | iounmap(virt); | |
221 | } | |
1da177e4 | 222 | } |
55a82ab3 | 223 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 LT |
224 | |
225 | #ifdef ACPI_FUTURE_USAGE | |
226 | acpi_status | |
4be44fcd | 227 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 228 | { |
4be44fcd | 229 | if (!phys || !virt) |
1da177e4 LT |
230 | return AE_BAD_PARAMETER; |
231 | ||
232 | *phys = virt_to_phys(virt); | |
233 | ||
234 | return AE_OK; | |
235 | } | |
236 | #endif | |
237 | ||
238 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
239 | ||
240 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
241 | ||
242 | acpi_status | |
4be44fcd LB |
243 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
244 | acpi_string * new_val) | |
1da177e4 LT |
245 | { |
246 | if (!init_val || !new_val) | |
247 | return AE_BAD_PARAMETER; | |
248 | ||
249 | *new_val = NULL; | |
4be44fcd | 250 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 251 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 252 | acpi_os_name); |
1da177e4 LT |
253 | *new_val = acpi_os_name; |
254 | } | |
255 | ||
256 | return AE_OK; | |
257 | } | |
258 | ||
259 | acpi_status | |
4be44fcd LB |
260 | acpi_os_table_override(struct acpi_table_header * existing_table, |
261 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
262 | { |
263 | if (!existing_table || !new_table) | |
264 | return AE_BAD_PARAMETER; | |
265 | ||
266 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
267 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 268 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 LT |
269 | else |
270 | *new_table = NULL; | |
271 | #else | |
272 | *new_table = NULL; | |
273 | #endif | |
274 | return AE_OK; | |
275 | } | |
276 | ||
7d12e780 | 277 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 278 | { |
4be44fcd | 279 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
1da177e4 LT |
280 | } |
281 | ||
282 | acpi_status | |
4be44fcd LB |
283 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
284 | void *context) | |
1da177e4 LT |
285 | { |
286 | unsigned int irq; | |
287 | ||
288 | /* | |
289 | * Ignore the GSI from the core, and use the value in our copy of the | |
290 | * FADT. It may not be the same if an interrupt source override exists | |
291 | * for the SCI. | |
292 | */ | |
cee324b1 | 293 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
294 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
295 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
296 | gsi); | |
297 | return AE_OK; | |
298 | } | |
299 | ||
300 | acpi_irq_handler = handler; | |
301 | acpi_irq_context = context; | |
dace1453 | 302 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
303 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
304 | return AE_NOT_ACQUIRED; | |
305 | } | |
306 | acpi_irq_irq = irq; | |
307 | ||
308 | return AE_OK; | |
309 | } | |
310 | ||
4be44fcd | 311 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
312 | { |
313 | if (irq) { | |
314 | free_irq(irq, acpi_irq); | |
315 | acpi_irq_handler = NULL; | |
316 | acpi_irq_irq = 0; | |
317 | } | |
318 | ||
319 | return AE_OK; | |
320 | } | |
321 | ||
322 | /* | |
323 | * Running in interpreter thread context, safe to sleep | |
324 | */ | |
325 | ||
4be44fcd | 326 | void acpi_os_sleep(acpi_integer ms) |
1da177e4 | 327 | { |
01a527ec | 328 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 329 | } |
4be44fcd | 330 | |
1da177e4 LT |
331 | EXPORT_SYMBOL(acpi_os_sleep); |
332 | ||
4be44fcd | 333 | void acpi_os_stall(u32 us) |
1da177e4 LT |
334 | { |
335 | while (us) { | |
336 | u32 delay = 1000; | |
337 | ||
338 | if (delay > us) | |
339 | delay = us; | |
340 | udelay(delay); | |
341 | touch_nmi_watchdog(); | |
342 | us -= delay; | |
343 | } | |
344 | } | |
4be44fcd | 345 | |
1da177e4 LT |
346 | EXPORT_SYMBOL(acpi_os_stall); |
347 | ||
348 | /* | |
349 | * Support ACPI 3.0 AML Timer operand | |
350 | * Returns 64-bit free-running, monotonically increasing timer | |
351 | * with 100ns granularity | |
352 | */ | |
4be44fcd | 353 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
354 | { |
355 | static u64 t; | |
356 | ||
357 | #ifdef CONFIG_HPET | |
358 | /* TBD: use HPET if available */ | |
359 | #endif | |
360 | ||
361 | #ifdef CONFIG_X86_PM_TIMER | |
362 | /* TBD: default to PM timer if HPET was not available */ | |
363 | #endif | |
364 | if (!t) | |
365 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
366 | ||
367 | return ++t; | |
368 | } | |
369 | ||
4be44fcd | 370 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
371 | { |
372 | u32 dummy; | |
373 | ||
374 | if (!value) | |
375 | value = &dummy; | |
376 | ||
4be44fcd | 377 | switch (width) { |
1da177e4 | 378 | case 8: |
4be44fcd | 379 | *(u8 *) value = inb(port); |
1da177e4 LT |
380 | break; |
381 | case 16: | |
4be44fcd | 382 | *(u16 *) value = inw(port); |
1da177e4 LT |
383 | break; |
384 | case 32: | |
4be44fcd | 385 | *(u32 *) value = inl(port); |
1da177e4 LT |
386 | break; |
387 | default: | |
388 | BUG(); | |
389 | } | |
390 | ||
391 | return AE_OK; | |
392 | } | |
4be44fcd | 393 | |
1da177e4 LT |
394 | EXPORT_SYMBOL(acpi_os_read_port); |
395 | ||
4be44fcd | 396 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 397 | { |
4be44fcd | 398 | switch (width) { |
1da177e4 LT |
399 | case 8: |
400 | outb(value, port); | |
401 | break; | |
402 | case 16: | |
403 | outw(value, port); | |
404 | break; | |
405 | case 32: | |
406 | outl(value, port); | |
407 | break; | |
408 | default: | |
409 | BUG(); | |
410 | } | |
411 | ||
412 | return AE_OK; | |
413 | } | |
4be44fcd | 414 | |
1da177e4 LT |
415 | EXPORT_SYMBOL(acpi_os_write_port); |
416 | ||
417 | acpi_status | |
4be44fcd | 418 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 419 | { |
4be44fcd LB |
420 | u32 dummy; |
421 | void __iomem *virt_addr; | |
1da177e4 | 422 | |
9f4fd61f | 423 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
424 | if (!value) |
425 | value = &dummy; | |
426 | ||
427 | switch (width) { | |
428 | case 8: | |
4be44fcd | 429 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
430 | break; |
431 | case 16: | |
4be44fcd | 432 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
433 | break; |
434 | case 32: | |
4be44fcd | 435 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
436 | break; |
437 | default: | |
438 | BUG(); | |
439 | } | |
440 | ||
9f4fd61f | 441 | iounmap(virt_addr); |
1da177e4 LT |
442 | |
443 | return AE_OK; | |
444 | } | |
445 | ||
446 | acpi_status | |
4be44fcd | 447 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 448 | { |
4be44fcd | 449 | void __iomem *virt_addr; |
1da177e4 | 450 | |
9f4fd61f | 451 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
452 | |
453 | switch (width) { | |
454 | case 8: | |
455 | writeb(value, virt_addr); | |
456 | break; | |
457 | case 16: | |
458 | writew(value, virt_addr); | |
459 | break; | |
460 | case 32: | |
461 | writel(value, virt_addr); | |
462 | break; | |
463 | default: | |
464 | BUG(); | |
465 | } | |
466 | ||
9f4fd61f | 467 | iounmap(virt_addr); |
1da177e4 LT |
468 | |
469 | return AE_OK; | |
470 | } | |
471 | ||
1da177e4 | 472 | acpi_status |
4be44fcd LB |
473 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
474 | void *value, u32 width) | |
1da177e4 LT |
475 | { |
476 | int result, size; | |
477 | ||
478 | if (!value) | |
479 | return AE_BAD_PARAMETER; | |
480 | ||
481 | switch (width) { | |
482 | case 8: | |
483 | size = 1; | |
484 | break; | |
485 | case 16: | |
486 | size = 2; | |
487 | break; | |
488 | case 32: | |
489 | size = 4; | |
490 | break; | |
491 | default: | |
492 | return AE_ERROR; | |
493 | } | |
494 | ||
495 | BUG_ON(!raw_pci_ops); | |
496 | ||
497 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
498 | PCI_DEVFN(pci_id->device, pci_id->function), |
499 | reg, size, value); | |
1da177e4 LT |
500 | |
501 | return (result ? AE_ERROR : AE_OK); | |
502 | } | |
4be44fcd | 503 | |
1da177e4 LT |
504 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
505 | ||
506 | acpi_status | |
4be44fcd LB |
507 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
508 | acpi_integer value, u32 width) | |
1da177e4 LT |
509 | { |
510 | int result, size; | |
511 | ||
512 | switch (width) { | |
513 | case 8: | |
514 | size = 1; | |
515 | break; | |
516 | case 16: | |
517 | size = 2; | |
518 | break; | |
519 | case 32: | |
520 | size = 4; | |
521 | break; | |
522 | default: | |
523 | return AE_ERROR; | |
524 | } | |
525 | ||
526 | BUG_ON(!raw_pci_ops); | |
527 | ||
528 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
529 | PCI_DEVFN(pci_id->device, pci_id->function), |
530 | reg, size, value); | |
1da177e4 LT |
531 | |
532 | return (result ? AE_ERROR : AE_OK); | |
533 | } | |
534 | ||
535 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
536 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
537 | acpi_handle chandle, /* current node */ | |
538 | struct acpi_pci_id **id, | |
539 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 540 | { |
4be44fcd LB |
541 | acpi_handle handle; |
542 | struct acpi_pci_id *pci_id = *id; | |
543 | acpi_status status; | |
544 | unsigned long temp; | |
545 | acpi_object_type type; | |
546 | u8 tu8; | |
1da177e4 LT |
547 | |
548 | acpi_get_parent(chandle, &handle); | |
549 | if (handle != rhandle) { | |
4be44fcd LB |
550 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
551 | bus_number); | |
1da177e4 LT |
552 | |
553 | status = acpi_get_type(handle, &type); | |
4be44fcd | 554 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
555 | return; |
556 | ||
4be44fcd LB |
557 | status = |
558 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, | |
559 | &temp); | |
1da177e4 | 560 | if (ACPI_SUCCESS(status)) { |
4be44fcd LB |
561 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
562 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
563 | |
564 | if (*is_bridge) | |
565 | pci_id->bus = *bus_number; | |
566 | ||
567 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd LB |
568 | status = |
569 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, | |
570 | 8); | |
571 | if (ACPI_SUCCESS(status) | |
572 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { | |
573 | status = | |
574 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
575 | &tu8, 8); | |
1da177e4 LT |
576 | if (!ACPI_SUCCESS(status)) { |
577 | /* Certainly broken... FIX ME */ | |
578 | return; | |
579 | } | |
580 | *is_bridge = 1; | |
581 | pci_id->bus = tu8; | |
4be44fcd LB |
582 | status = |
583 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
584 | &tu8, 8); | |
1da177e4 LT |
585 | if (ACPI_SUCCESS(status)) { |
586 | *bus_number = tu8; | |
587 | } | |
588 | } else | |
589 | *is_bridge = 0; | |
590 | } | |
591 | } | |
592 | } | |
593 | ||
4be44fcd LB |
594 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
595 | acpi_handle chandle, /* current node */ | |
596 | struct acpi_pci_id **id) | |
1da177e4 LT |
597 | { |
598 | int is_bridge = 1; | |
599 | u8 bus_number = (*id)->bus; | |
600 | ||
601 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
602 | } | |
603 | ||
65f27f38 | 604 | static void acpi_os_execute_deferred(struct work_struct *work) |
1da177e4 | 605 | { |
65f27f38 | 606 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
1da177e4 | 607 | |
1da177e4 | 608 | if (!dpc) { |
6468463a | 609 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); |
d550d98d | 610 | return; |
1da177e4 LT |
611 | } |
612 | ||
613 | dpc->function(dpc->context); | |
614 | ||
615 | kfree(dpc); | |
616 | ||
d550d98d | 617 | return; |
1da177e4 LT |
618 | } |
619 | ||
b8d35192 AS |
620 | /******************************************************************************* |
621 | * | |
622 | * FUNCTION: acpi_os_execute | |
623 | * | |
624 | * PARAMETERS: Type - Type of the callback | |
625 | * Function - Function to be executed | |
626 | * Context - Function parameters | |
627 | * | |
628 | * RETURN: Status | |
629 | * | |
630 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
631 | * immediately executes function on a separate thread. | |
632 | * | |
633 | ******************************************************************************/ | |
634 | ||
635 | acpi_status acpi_os_execute(acpi_execute_type type, | |
4be44fcd | 636 | acpi_osd_exec_callback function, void *context) |
1da177e4 | 637 | { |
4be44fcd LB |
638 | acpi_status status = AE_OK; |
639 | struct acpi_os_dpc *dpc; | |
72945b2b | 640 | |
b976fe19 LT |
641 | ACPI_FUNCTION_TRACE("os_queue_for_execution"); |
642 | ||
72945b2b LB |
643 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
644 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
645 | function, context)); | |
1da177e4 LT |
646 | |
647 | if (!function) | |
b976fe19 | 648 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
72945b2b | 649 | |
1da177e4 LT |
650 | /* |
651 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 652 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
653 | * way that allows us to also free its memory inside the callee. |
654 | * Because we may want to schedule several tasks with different | |
655 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 656 | * having a static work_struct. |
1da177e4 | 657 | */ |
72945b2b | 658 | |
65f27f38 | 659 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 660 | if (!dpc) |
b976fe19 LT |
661 | return_ACPI_STATUS(AE_NO_MEMORY); |
662 | ||
1da177e4 LT |
663 | dpc->function = function; |
664 | dpc->context = context; | |
b976fe19 | 665 | |
65f27f38 DH |
666 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); |
667 | if (!queue_work(kacpid_wq, &dpc->work)) { | |
b976fe19 LT |
668 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
669 | "Call to queue_work() failed.\n")); | |
37605a69 | 670 | kfree(dpc); |
b976fe19 | 671 | status = AE_ERROR; |
1da177e4 | 672 | } |
b976fe19 LT |
673 | |
674 | return_ACPI_STATUS(status); | |
1da177e4 | 675 | } |
4be44fcd | 676 | |
b8d35192 | 677 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 678 | |
4be44fcd | 679 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
680 | { |
681 | flush_workqueue(kacpid_wq); | |
682 | } | |
4be44fcd | 683 | |
1da177e4 LT |
684 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
685 | ||
686 | /* | |
687 | * Allocate the memory for a spinlock and initialize it. | |
688 | */ | |
967440e3 | 689 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 690 | { |
967440e3 | 691 | spin_lock_init(*handle); |
1da177e4 | 692 | |
d550d98d | 693 | return AE_OK; |
1da177e4 LT |
694 | } |
695 | ||
1da177e4 LT |
696 | /* |
697 | * Deallocate the memory for a spinlock. | |
698 | */ | |
967440e3 | 699 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 700 | { |
d550d98d | 701 | return; |
1da177e4 LT |
702 | } |
703 | ||
1da177e4 | 704 | acpi_status |
4be44fcd | 705 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 706 | { |
4be44fcd | 707 | struct semaphore *sem = NULL; |
1da177e4 | 708 | |
1da177e4 LT |
709 | |
710 | sem = acpi_os_allocate(sizeof(struct semaphore)); | |
711 | if (!sem) | |
d550d98d | 712 | return AE_NO_MEMORY; |
1da177e4 LT |
713 | memset(sem, 0, sizeof(struct semaphore)); |
714 | ||
715 | sema_init(sem, initial_units); | |
716 | ||
4be44fcd | 717 | *handle = (acpi_handle *) sem; |
1da177e4 | 718 | |
4be44fcd LB |
719 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
720 | *handle, initial_units)); | |
1da177e4 | 721 | |
d550d98d | 722 | return AE_OK; |
1da177e4 | 723 | } |
1da177e4 | 724 | |
4be44fcd | 725 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
1da177e4 LT |
726 | |
727 | /* | |
728 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
729 | * 'delete_semaphore()' function -- may result in an invalid | |
730 | * pointer dereference for non-synchronized consumers. Should | |
731 | * we at least check for blocked threads and signal/cancel them? | |
732 | */ | |
733 | ||
4be44fcd | 734 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 735 | { |
4be44fcd | 736 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 737 | |
1da177e4 LT |
738 | |
739 | if (!sem) | |
d550d98d | 740 | return AE_BAD_PARAMETER; |
1da177e4 | 741 | |
4be44fcd | 742 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 743 | |
02438d87 | 744 | kfree(sem); |
4be44fcd | 745 | sem = NULL; |
1da177e4 | 746 | |
d550d98d | 747 | return AE_OK; |
1da177e4 | 748 | } |
1da177e4 | 749 | |
4be44fcd | 750 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
1da177e4 LT |
751 | |
752 | /* | |
753 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to | |
754 | * improvise. The process is to sleep for one scheduler quantum | |
755 | * until the semaphore becomes available. Downside is that this | |
756 | * may result in starvation for timeout-based waits when there's | |
757 | * lots of semaphore activity. | |
758 | * | |
759 | * TODO: Support for units > 1? | |
760 | */ | |
4be44fcd | 761 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 762 | { |
4be44fcd LB |
763 | acpi_status status = AE_OK; |
764 | struct semaphore *sem = (struct semaphore *)handle; | |
765 | int ret = 0; | |
1da177e4 | 766 | |
1da177e4 LT |
767 | |
768 | if (!sem || (units < 1)) | |
d550d98d | 769 | return AE_BAD_PARAMETER; |
1da177e4 LT |
770 | |
771 | if (units > 1) | |
d550d98d | 772 | return AE_SUPPORT; |
1da177e4 | 773 | |
4be44fcd LB |
774 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
775 | handle, units, timeout)); | |
1da177e4 | 776 | |
d68909f4 LB |
777 | /* |
778 | * This can be called during resume with interrupts off. | |
779 | * Like boot-time, we should be single threaded and will | |
780 | * always get the lock if we try -- timeout or not. | |
781 | * If this doesn't succeed, then we will oops courtesy of | |
782 | * might_sleep() in down(). | |
783 | */ | |
784 | if (!down_trylock(sem)) | |
785 | return AE_OK; | |
786 | ||
4be44fcd | 787 | switch (timeout) { |
1da177e4 LT |
788 | /* |
789 | * No Wait: | |
790 | * -------- | |
791 | * A zero timeout value indicates that we shouldn't wait - just | |
792 | * acquire the semaphore if available otherwise return AE_TIME | |
793 | * (a.k.a. 'would block'). | |
794 | */ | |
4be44fcd LB |
795 | case 0: |
796 | if (down_trylock(sem)) | |
1da177e4 LT |
797 | status = AE_TIME; |
798 | break; | |
799 | ||
800 | /* | |
801 | * Wait Indefinitely: | |
802 | * ------------------ | |
803 | */ | |
4be44fcd | 804 | case ACPI_WAIT_FOREVER: |
1da177e4 LT |
805 | down(sem); |
806 | break; | |
807 | ||
808 | /* | |
809 | * Wait w/ Timeout: | |
810 | * ---------------- | |
811 | */ | |
4be44fcd | 812 | default: |
1da177e4 LT |
813 | // TODO: A better timeout algorithm? |
814 | { | |
815 | int i = 0; | |
4be44fcd | 816 | static const int quantum_ms = 1000 / HZ; |
1da177e4 LT |
817 | |
818 | ret = down_trylock(sem); | |
dacd9b80 | 819 | for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) { |
01a527ec | 820 | schedule_timeout_interruptible(1); |
1da177e4 LT |
821 | ret = down_trylock(sem); |
822 | } | |
4be44fcd | 823 | |
1da177e4 LT |
824 | if (ret != 0) |
825 | status = AE_TIME; | |
826 | } | |
827 | break; | |
828 | } | |
829 | ||
830 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 831 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 832 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
833 | handle, units, timeout, |
834 | acpi_format_exception(status))); | |
835 | } else { | |
836 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 837 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 838 | units, timeout)); |
1da177e4 LT |
839 | } |
840 | ||
d550d98d | 841 | return status; |
1da177e4 | 842 | } |
1da177e4 | 843 | |
4be44fcd | 844 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
1da177e4 LT |
845 | |
846 | /* | |
847 | * TODO: Support for units > 1? | |
848 | */ | |
4be44fcd | 849 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 850 | { |
4be44fcd | 851 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 852 | |
1da177e4 LT |
853 | |
854 | if (!sem || (units < 1)) | |
d550d98d | 855 | return AE_BAD_PARAMETER; |
1da177e4 LT |
856 | |
857 | if (units > 1) | |
d550d98d | 858 | return AE_SUPPORT; |
1da177e4 | 859 | |
4be44fcd LB |
860 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
861 | units)); | |
1da177e4 LT |
862 | |
863 | up(sem); | |
864 | ||
d550d98d | 865 | return AE_OK; |
1da177e4 | 866 | } |
4be44fcd | 867 | |
1da177e4 LT |
868 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
869 | ||
870 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 871 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
872 | { |
873 | ||
874 | #ifdef ENABLE_DEBUGGER | |
875 | if (acpi_in_debugger) { | |
876 | u32 chars; | |
877 | ||
878 | kdb_read(buffer, sizeof(line_buf)); | |
879 | ||
880 | /* remove the CR kdb includes */ | |
881 | chars = strlen(buffer) - 1; | |
882 | buffer[chars] = '\0'; | |
883 | } | |
884 | #endif | |
885 | ||
886 | return 0; | |
887 | } | |
4be44fcd | 888 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 889 | |
4be44fcd | 890 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 891 | { |
4be44fcd | 892 | switch (function) { |
1da177e4 LT |
893 | case ACPI_SIGNAL_FATAL: |
894 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
895 | break; | |
896 | case ACPI_SIGNAL_BREAKPOINT: | |
897 | /* | |
898 | * AML Breakpoint | |
899 | * ACPI spec. says to treat it as a NOP unless | |
900 | * you are debugging. So if/when we integrate | |
901 | * AML debugger into the kernel debugger its | |
902 | * hook will go here. But until then it is | |
903 | * not useful to print anything on breakpoints. | |
904 | */ | |
905 | break; | |
906 | default: | |
907 | break; | |
908 | } | |
909 | ||
910 | return AE_OK; | |
911 | } | |
4be44fcd | 912 | |
1da177e4 LT |
913 | EXPORT_SYMBOL(acpi_os_signal); |
914 | ||
4be44fcd | 915 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
916 | { |
917 | char *p = acpi_os_name; | |
4be44fcd | 918 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
919 | |
920 | if (!str || !*str) | |
921 | return 0; | |
922 | ||
923 | for (; count-- && str && *str; str++) { | |
924 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
925 | *p++ = *str; | |
926 | else if (*str == '\'' || *str == '"') | |
927 | continue; | |
928 | else | |
929 | break; | |
930 | } | |
931 | *p = 0; | |
932 | ||
933 | return 1; | |
4be44fcd | 934 | |
1da177e4 LT |
935 | } |
936 | ||
937 | __setup("acpi_os_name=", acpi_os_name_setup); | |
938 | ||
939 | /* | |
940 | * _OSI control | |
941 | * empty string disables _OSI | |
942 | * TBD additional string adds to _OSI | |
943 | */ | |
4be44fcd | 944 | static int __init acpi_osi_setup(char *str) |
1da177e4 LT |
945 | { |
946 | if (str == NULL || *str == '\0') { | |
947 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
948 | acpi_gbl_create_osi_method = FALSE; | |
4be44fcd | 949 | } else { |
1da177e4 | 950 | /* TBD */ |
4be44fcd LB |
951 | printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n", |
952 | str); | |
1da177e4 LT |
953 | } |
954 | ||
955 | return 1; | |
956 | } | |
957 | ||
958 | __setup("acpi_osi=", acpi_osi_setup); | |
959 | ||
960 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 961 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
962 | { |
963 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
964 | ||
965 | acpi_gbl_all_methods_serialized = TRUE; | |
966 | ||
967 | return 1; | |
968 | } | |
969 | ||
970 | __setup("acpi_serialize", acpi_serialize_setup); | |
971 | ||
972 | /* | |
973 | * Wake and Run-Time GPES are expected to be separate. | |
974 | * We disable wake-GPEs at run-time to prevent spurious | |
975 | * interrupts. | |
976 | * | |
977 | * However, if a system exists that shares Wake and | |
978 | * Run-time events on the same GPE this flag is available | |
979 | * to tell Linux to keep the wake-time GPEs enabled at run-time. | |
980 | */ | |
4be44fcd | 981 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
1da177e4 LT |
982 | { |
983 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); | |
984 | ||
985 | acpi_gbl_leave_wake_gpes_disabled = FALSE; | |
986 | ||
987 | return 1; | |
988 | } | |
989 | ||
990 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); | |
991 | ||
992 | /* | |
993 | * max_cstate is defined in the base kernel so modules can | |
994 | * change it w/o depending on the state of the processor module. | |
995 | */ | |
996 | unsigned int max_cstate = ACPI_PROCESSOR_MAX_POWER; | |
997 | ||
1da177e4 | 998 | EXPORT_SYMBOL(max_cstate); |
73459f73 RM |
999 | |
1000 | /* | |
1001 | * Acquire a spinlock. | |
1002 | * | |
1003 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1004 | */ |
1005 | ||
967440e3 | 1006 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1007 | { |
b8e4d893 | 1008 | acpi_cpu_flags flags; |
967440e3 | 1009 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1010 | return flags; |
1011 | } | |
1012 | ||
1013 | /* | |
1014 | * Release a spinlock. See above. | |
1015 | */ | |
1016 | ||
967440e3 | 1017 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1018 | { |
967440e3 | 1019 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1020 | } |
1021 | ||
73459f73 RM |
1022 | #ifndef ACPI_USE_LOCAL_CACHE |
1023 | ||
1024 | /******************************************************************************* | |
1025 | * | |
1026 | * FUNCTION: acpi_os_create_cache | |
1027 | * | |
b229cf92 BM |
1028 | * PARAMETERS: name - Ascii name for the cache |
1029 | * size - Size of each cached object | |
1030 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1031 | * cache - Where the new cache object is returned | |
73459f73 | 1032 | * |
b229cf92 | 1033 | * RETURN: status |
73459f73 RM |
1034 | * |
1035 | * DESCRIPTION: Create a cache object | |
1036 | * | |
1037 | ******************************************************************************/ | |
1038 | ||
1039 | acpi_status | |
4be44fcd | 1040 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1041 | { |
4be44fcd | 1042 | *cache = kmem_cache_create(name, size, 0, 0, NULL, NULL); |
a6fdbf90 | 1043 | if (*cache == NULL) |
b229cf92 BM |
1044 | return AE_ERROR; |
1045 | else | |
1046 | return AE_OK; | |
73459f73 RM |
1047 | } |
1048 | ||
1049 | /******************************************************************************* | |
1050 | * | |
1051 | * FUNCTION: acpi_os_purge_cache | |
1052 | * | |
1053 | * PARAMETERS: Cache - Handle to cache object | |
1054 | * | |
1055 | * RETURN: Status | |
1056 | * | |
1057 | * DESCRIPTION: Free all objects within the requested cache. | |
1058 | * | |
1059 | ******************************************************************************/ | |
1060 | ||
4be44fcd | 1061 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1062 | { |
50dd0969 | 1063 | kmem_cache_shrink(cache); |
4be44fcd | 1064 | return (AE_OK); |
73459f73 RM |
1065 | } |
1066 | ||
1067 | /******************************************************************************* | |
1068 | * | |
1069 | * FUNCTION: acpi_os_delete_cache | |
1070 | * | |
1071 | * PARAMETERS: Cache - Handle to cache object | |
1072 | * | |
1073 | * RETURN: Status | |
1074 | * | |
1075 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1076 | * cache object. | |
1077 | * | |
1078 | ******************************************************************************/ | |
1079 | ||
4be44fcd | 1080 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1081 | { |
1a1d92c1 | 1082 | kmem_cache_destroy(cache); |
4be44fcd | 1083 | return (AE_OK); |
73459f73 RM |
1084 | } |
1085 | ||
1086 | /******************************************************************************* | |
1087 | * | |
1088 | * FUNCTION: acpi_os_release_object | |
1089 | * | |
1090 | * PARAMETERS: Cache - Handle to cache object | |
1091 | * Object - The object to be released | |
1092 | * | |
1093 | * RETURN: None | |
1094 | * | |
1095 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1096 | * the object is deleted. | |
1097 | * | |
1098 | ******************************************************************************/ | |
1099 | ||
4be44fcd | 1100 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1101 | { |
4be44fcd LB |
1102 | kmem_cache_free(cache, object); |
1103 | return (AE_OK); | |
73459f73 RM |
1104 | } |
1105 | ||
b229cf92 BM |
1106 | /****************************************************************************** |
1107 | * | |
1108 | * FUNCTION: acpi_os_validate_interface | |
1109 | * | |
1110 | * PARAMETERS: interface - Requested interface to be validated | |
1111 | * | |
1112 | * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise | |
1113 | * | |
1114 | * DESCRIPTION: Match an interface string to the interfaces supported by the | |
1115 | * host. Strings originate from an AML call to the _OSI method. | |
1116 | * | |
1117 | *****************************************************************************/ | |
1118 | ||
1119 | acpi_status | |
1120 | acpi_os_validate_interface (char *interface) | |
1121 | { | |
1122 | ||
1123 | return AE_SUPPORT; | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /****************************************************************************** | |
1128 | * | |
1129 | * FUNCTION: acpi_os_validate_address | |
1130 | * | |
1131 | * PARAMETERS: space_id - ACPI space ID | |
1132 | * address - Physical address | |
1133 | * length - Address length | |
1134 | * | |
1135 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1136 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1137 | * | |
1138 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1139 | * the addresses accessed by AML operation regions. | |
1140 | * | |
1141 | *****************************************************************************/ | |
1142 | ||
1143 | acpi_status | |
1144 | acpi_os_validate_address ( | |
1145 | u8 space_id, | |
1146 | acpi_physical_address address, | |
1147 | acpi_size length) | |
1148 | { | |
1149 | ||
1150 | return AE_OK; | |
1151 | } | |
1152 | ||
1153 | ||
73459f73 | 1154 | #endif |