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