]>
Commit | Line | Data |
---|---|---|
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; | |
88db5e14 | 74 | static struct workqueue_struct *kacpi_notify_wq; |
1da177e4 | 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 | 140 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
88db5e14 | 141 | kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify"); |
1da177e4 | 142 | BUG_ON(!kacpid_wq); |
88db5e14 | 143 | BUG_ON(!kacpi_notify_wq); |
1da177e4 LT |
144 | return AE_OK; |
145 | } | |
146 | ||
4be44fcd | 147 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
148 | { |
149 | if (acpi_irq_handler) { | |
150 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
151 | acpi_irq_handler); | |
152 | } | |
153 | ||
154 | destroy_workqueue(kacpid_wq); | |
88db5e14 | 155 | destroy_workqueue(kacpi_notify_wq); |
1da177e4 LT |
156 | |
157 | return AE_OK; | |
158 | } | |
159 | ||
4be44fcd | 160 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
161 | { |
162 | va_list args; | |
163 | va_start(args, fmt); | |
164 | acpi_os_vprintf(fmt, args); | |
165 | va_end(args); | |
166 | } | |
4be44fcd | 167 | |
1da177e4 LT |
168 | EXPORT_SYMBOL(acpi_os_printf); |
169 | ||
4be44fcd | 170 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
171 | { |
172 | static char buffer[512]; | |
4be44fcd | 173 | |
1da177e4 LT |
174 | vsprintf(buffer, fmt, args); |
175 | ||
176 | #ifdef ENABLE_DEBUGGER | |
177 | if (acpi_in_debugger) { | |
178 | kdb_printf("%s", buffer); | |
179 | } else { | |
180 | printk("%s", buffer); | |
181 | } | |
182 | #else | |
183 | printk("%s", buffer); | |
184 | #endif | |
185 | } | |
186 | ||
ad71860a | 187 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
188 | { |
189 | if (efi_enabled) { | |
b2c99e3c | 190 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 191 | return efi.acpi20; |
b2c99e3c | 192 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 193 | return efi.acpi; |
1da177e4 | 194 | else { |
4be44fcd LB |
195 | printk(KERN_ERR PREFIX |
196 | "System description tables not found\n"); | |
ad71860a | 197 | return 0; |
1da177e4 | 198 | } |
ad71860a AS |
199 | } else |
200 | return acpi_find_rsdp(); | |
1da177e4 LT |
201 | } |
202 | ||
ad71860a | 203 | void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
1da177e4 | 204 | { |
9f4fd61f BH |
205 | if (phys > ULONG_MAX) { |
206 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 207 | return NULL; |
1da177e4 | 208 | } |
ad71860a AS |
209 | if (acpi_gbl_permanent_mmap) |
210 | /* | |
211 | * ioremap checks to ensure this is in reserved space | |
212 | */ | |
213 | return ioremap((unsigned long)phys, size); | |
214 | else | |
215 | return __acpi_map_table((unsigned long)phys, size); | |
1da177e4 | 216 | } |
55a82ab3 | 217 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 218 | |
4be44fcd | 219 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
1da177e4 | 220 | { |
ad71860a AS |
221 | if (acpi_gbl_permanent_mmap) { |
222 | iounmap(virt); | |
223 | } | |
1da177e4 | 224 | } |
55a82ab3 | 225 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 LT |
226 | |
227 | #ifdef ACPI_FUTURE_USAGE | |
228 | acpi_status | |
4be44fcd | 229 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 230 | { |
4be44fcd | 231 | if (!phys || !virt) |
1da177e4 LT |
232 | return AE_BAD_PARAMETER; |
233 | ||
234 | *phys = virt_to_phys(virt); | |
235 | ||
236 | return AE_OK; | |
237 | } | |
238 | #endif | |
239 | ||
240 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
241 | ||
242 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
243 | ||
244 | acpi_status | |
4be44fcd LB |
245 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
246 | acpi_string * new_val) | |
1da177e4 LT |
247 | { |
248 | if (!init_val || !new_val) | |
249 | return AE_BAD_PARAMETER; | |
250 | ||
251 | *new_val = NULL; | |
4be44fcd | 252 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 253 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 254 | acpi_os_name); |
1da177e4 LT |
255 | *new_val = acpi_os_name; |
256 | } | |
257 | ||
258 | return AE_OK; | |
259 | } | |
260 | ||
261 | acpi_status | |
4be44fcd LB |
262 | acpi_os_table_override(struct acpi_table_header * existing_table, |
263 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
264 | { |
265 | if (!existing_table || !new_table) | |
266 | return AE_BAD_PARAMETER; | |
267 | ||
268 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
269 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 270 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 LT |
271 | else |
272 | *new_table = NULL; | |
273 | #else | |
274 | *new_table = NULL; | |
275 | #endif | |
276 | return AE_OK; | |
277 | } | |
278 | ||
7d12e780 | 279 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 280 | { |
4be44fcd | 281 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
1da177e4 LT |
282 | } |
283 | ||
284 | acpi_status | |
4be44fcd LB |
285 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
286 | void *context) | |
1da177e4 LT |
287 | { |
288 | unsigned int irq; | |
289 | ||
290 | /* | |
291 | * Ignore the GSI from the core, and use the value in our copy of the | |
292 | * FADT. It may not be the same if an interrupt source override exists | |
293 | * for the SCI. | |
294 | */ | |
cee324b1 | 295 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
296 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
297 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
298 | gsi); | |
299 | return AE_OK; | |
300 | } | |
301 | ||
302 | acpi_irq_handler = handler; | |
303 | acpi_irq_context = context; | |
dace1453 | 304 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
305 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
306 | return AE_NOT_ACQUIRED; | |
307 | } | |
308 | acpi_irq_irq = irq; | |
309 | ||
310 | return AE_OK; | |
311 | } | |
312 | ||
4be44fcd | 313 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
314 | { |
315 | if (irq) { | |
316 | free_irq(irq, acpi_irq); | |
317 | acpi_irq_handler = NULL; | |
318 | acpi_irq_irq = 0; | |
319 | } | |
320 | ||
321 | return AE_OK; | |
322 | } | |
323 | ||
324 | /* | |
325 | * Running in interpreter thread context, safe to sleep | |
326 | */ | |
327 | ||
4be44fcd | 328 | void acpi_os_sleep(acpi_integer ms) |
1da177e4 | 329 | { |
01a527ec | 330 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 331 | } |
4be44fcd | 332 | |
1da177e4 LT |
333 | EXPORT_SYMBOL(acpi_os_sleep); |
334 | ||
4be44fcd | 335 | void acpi_os_stall(u32 us) |
1da177e4 LT |
336 | { |
337 | while (us) { | |
338 | u32 delay = 1000; | |
339 | ||
340 | if (delay > us) | |
341 | delay = us; | |
342 | udelay(delay); | |
343 | touch_nmi_watchdog(); | |
344 | us -= delay; | |
345 | } | |
346 | } | |
4be44fcd | 347 | |
1da177e4 LT |
348 | EXPORT_SYMBOL(acpi_os_stall); |
349 | ||
350 | /* | |
351 | * Support ACPI 3.0 AML Timer operand | |
352 | * Returns 64-bit free-running, monotonically increasing timer | |
353 | * with 100ns granularity | |
354 | */ | |
4be44fcd | 355 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
356 | { |
357 | static u64 t; | |
358 | ||
359 | #ifdef CONFIG_HPET | |
360 | /* TBD: use HPET if available */ | |
361 | #endif | |
362 | ||
363 | #ifdef CONFIG_X86_PM_TIMER | |
364 | /* TBD: default to PM timer if HPET was not available */ | |
365 | #endif | |
366 | if (!t) | |
367 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
368 | ||
369 | return ++t; | |
370 | } | |
371 | ||
4be44fcd | 372 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
373 | { |
374 | u32 dummy; | |
375 | ||
376 | if (!value) | |
377 | value = &dummy; | |
378 | ||
4be44fcd | 379 | switch (width) { |
1da177e4 | 380 | case 8: |
4be44fcd | 381 | *(u8 *) value = inb(port); |
1da177e4 LT |
382 | break; |
383 | case 16: | |
4be44fcd | 384 | *(u16 *) value = inw(port); |
1da177e4 LT |
385 | break; |
386 | case 32: | |
4be44fcd | 387 | *(u32 *) value = inl(port); |
1da177e4 LT |
388 | break; |
389 | default: | |
390 | BUG(); | |
391 | } | |
392 | ||
393 | return AE_OK; | |
394 | } | |
4be44fcd | 395 | |
1da177e4 LT |
396 | EXPORT_SYMBOL(acpi_os_read_port); |
397 | ||
4be44fcd | 398 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 399 | { |
4be44fcd | 400 | switch (width) { |
1da177e4 LT |
401 | case 8: |
402 | outb(value, port); | |
403 | break; | |
404 | case 16: | |
405 | outw(value, port); | |
406 | break; | |
407 | case 32: | |
408 | outl(value, port); | |
409 | break; | |
410 | default: | |
411 | BUG(); | |
412 | } | |
413 | ||
414 | return AE_OK; | |
415 | } | |
4be44fcd | 416 | |
1da177e4 LT |
417 | EXPORT_SYMBOL(acpi_os_write_port); |
418 | ||
419 | acpi_status | |
4be44fcd | 420 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 421 | { |
4be44fcd LB |
422 | u32 dummy; |
423 | void __iomem *virt_addr; | |
1da177e4 | 424 | |
9f4fd61f | 425 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
426 | if (!value) |
427 | value = &dummy; | |
428 | ||
429 | switch (width) { | |
430 | case 8: | |
4be44fcd | 431 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
432 | break; |
433 | case 16: | |
4be44fcd | 434 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
435 | break; |
436 | case 32: | |
4be44fcd | 437 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
438 | break; |
439 | default: | |
440 | BUG(); | |
441 | } | |
442 | ||
9f4fd61f | 443 | iounmap(virt_addr); |
1da177e4 LT |
444 | |
445 | return AE_OK; | |
446 | } | |
447 | ||
448 | acpi_status | |
4be44fcd | 449 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 450 | { |
4be44fcd | 451 | void __iomem *virt_addr; |
1da177e4 | 452 | |
9f4fd61f | 453 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
454 | |
455 | switch (width) { | |
456 | case 8: | |
457 | writeb(value, virt_addr); | |
458 | break; | |
459 | case 16: | |
460 | writew(value, virt_addr); | |
461 | break; | |
462 | case 32: | |
463 | writel(value, virt_addr); | |
464 | break; | |
465 | default: | |
466 | BUG(); | |
467 | } | |
468 | ||
9f4fd61f | 469 | iounmap(virt_addr); |
1da177e4 LT |
470 | |
471 | return AE_OK; | |
472 | } | |
473 | ||
1da177e4 | 474 | acpi_status |
4be44fcd LB |
475 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
476 | void *value, u32 width) | |
1da177e4 LT |
477 | { |
478 | int result, size; | |
479 | ||
480 | if (!value) | |
481 | return AE_BAD_PARAMETER; | |
482 | ||
483 | switch (width) { | |
484 | case 8: | |
485 | size = 1; | |
486 | break; | |
487 | case 16: | |
488 | size = 2; | |
489 | break; | |
490 | case 32: | |
491 | size = 4; | |
492 | break; | |
493 | default: | |
494 | return AE_ERROR; | |
495 | } | |
496 | ||
497 | BUG_ON(!raw_pci_ops); | |
498 | ||
499 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
500 | PCI_DEVFN(pci_id->device, pci_id->function), |
501 | reg, size, value); | |
1da177e4 LT |
502 | |
503 | return (result ? AE_ERROR : AE_OK); | |
504 | } | |
4be44fcd | 505 | |
1da177e4 LT |
506 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
507 | ||
508 | acpi_status | |
4be44fcd LB |
509 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
510 | acpi_integer value, u32 width) | |
1da177e4 LT |
511 | { |
512 | int result, size; | |
513 | ||
514 | switch (width) { | |
515 | case 8: | |
516 | size = 1; | |
517 | break; | |
518 | case 16: | |
519 | size = 2; | |
520 | break; | |
521 | case 32: | |
522 | size = 4; | |
523 | break; | |
524 | default: | |
525 | return AE_ERROR; | |
526 | } | |
527 | ||
528 | BUG_ON(!raw_pci_ops); | |
529 | ||
530 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
531 | PCI_DEVFN(pci_id->device, pci_id->function), |
532 | reg, size, value); | |
1da177e4 LT |
533 | |
534 | return (result ? AE_ERROR : AE_OK); | |
535 | } | |
536 | ||
537 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
538 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
539 | acpi_handle chandle, /* current node */ | |
540 | struct acpi_pci_id **id, | |
541 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 542 | { |
4be44fcd LB |
543 | acpi_handle handle; |
544 | struct acpi_pci_id *pci_id = *id; | |
545 | acpi_status status; | |
546 | unsigned long temp; | |
547 | acpi_object_type type; | |
548 | u8 tu8; | |
1da177e4 LT |
549 | |
550 | acpi_get_parent(chandle, &handle); | |
551 | if (handle != rhandle) { | |
4be44fcd LB |
552 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
553 | bus_number); | |
1da177e4 LT |
554 | |
555 | status = acpi_get_type(handle, &type); | |
4be44fcd | 556 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
557 | return; |
558 | ||
4be44fcd LB |
559 | status = |
560 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, | |
561 | &temp); | |
1da177e4 | 562 | if (ACPI_SUCCESS(status)) { |
4be44fcd LB |
563 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
564 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
565 | |
566 | if (*is_bridge) | |
567 | pci_id->bus = *bus_number; | |
568 | ||
569 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd LB |
570 | status = |
571 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, | |
572 | 8); | |
573 | if (ACPI_SUCCESS(status) | |
574 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { | |
575 | status = | |
576 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
577 | &tu8, 8); | |
1da177e4 LT |
578 | if (!ACPI_SUCCESS(status)) { |
579 | /* Certainly broken... FIX ME */ | |
580 | return; | |
581 | } | |
582 | *is_bridge = 1; | |
583 | pci_id->bus = tu8; | |
4be44fcd LB |
584 | status = |
585 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
586 | &tu8, 8); | |
1da177e4 LT |
587 | if (ACPI_SUCCESS(status)) { |
588 | *bus_number = tu8; | |
589 | } | |
590 | } else | |
591 | *is_bridge = 0; | |
592 | } | |
593 | } | |
594 | } | |
595 | ||
4be44fcd LB |
596 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
597 | acpi_handle chandle, /* current node */ | |
598 | struct acpi_pci_id **id) | |
1da177e4 LT |
599 | { |
600 | int is_bridge = 1; | |
601 | u8 bus_number = (*id)->bus; | |
602 | ||
603 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
604 | } | |
605 | ||
65f27f38 | 606 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
607 | { |
608 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
609 | if (!dpc) { | |
610 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); | |
611 | return; | |
612 | } | |
613 | ||
614 | dpc->function(dpc->context); | |
615 | kfree(dpc); | |
616 | ||
617 | /* Yield cpu to notify thread */ | |
618 | cond_resched(); | |
619 | ||
620 | return; | |
621 | } | |
622 | ||
623 | static void acpi_os_execute_notify(struct work_struct *work) | |
1da177e4 | 624 | { |
65f27f38 | 625 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
1da177e4 | 626 | |
1da177e4 | 627 | if (!dpc) { |
6468463a | 628 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); |
d550d98d | 629 | return; |
1da177e4 LT |
630 | } |
631 | ||
632 | dpc->function(dpc->context); | |
633 | ||
634 | kfree(dpc); | |
635 | ||
d550d98d | 636 | return; |
1da177e4 LT |
637 | } |
638 | ||
b8d35192 AS |
639 | /******************************************************************************* |
640 | * | |
641 | * FUNCTION: acpi_os_execute | |
642 | * | |
643 | * PARAMETERS: Type - Type of the callback | |
644 | * Function - Function to be executed | |
645 | * Context - Function parameters | |
646 | * | |
647 | * RETURN: Status | |
648 | * | |
649 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
650 | * immediately executes function on a separate thread. | |
651 | * | |
652 | ******************************************************************************/ | |
653 | ||
654 | acpi_status acpi_os_execute(acpi_execute_type type, | |
4be44fcd | 655 | acpi_osd_exec_callback function, void *context) |
1da177e4 | 656 | { |
4be44fcd LB |
657 | acpi_status status = AE_OK; |
658 | struct acpi_os_dpc *dpc; | |
72945b2b | 659 | |
72945b2b LB |
660 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
661 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
662 | function, context)); | |
1da177e4 LT |
663 | |
664 | if (!function) | |
88db5e14 | 665 | return AE_BAD_PARAMETER; |
72945b2b | 666 | |
1da177e4 LT |
667 | /* |
668 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 669 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
670 | * way that allows us to also free its memory inside the callee. |
671 | * Because we may want to schedule several tasks with different | |
672 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 673 | * having a static work_struct. |
1da177e4 | 674 | */ |
72945b2b | 675 | |
65f27f38 | 676 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 677 | if (!dpc) |
b976fe19 LT |
678 | return_ACPI_STATUS(AE_NO_MEMORY); |
679 | ||
1da177e4 LT |
680 | dpc->function = function; |
681 | dpc->context = context; | |
b976fe19 | 682 | |
88db5e14 AS |
683 | if (type == OSL_NOTIFY_HANDLER) { |
684 | INIT_WORK(&dpc->work, acpi_os_execute_notify); | |
685 | if (!queue_work(kacpi_notify_wq, &dpc->work)) { | |
686 | status = AE_ERROR; | |
687 | kfree(dpc); | |
688 | } | |
689 | } else { | |
690 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
691 | if (!queue_work(kacpid_wq, &dpc->work)) { | |
692 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
b976fe19 | 693 | "Call to queue_work() failed.\n")); |
88db5e14 AS |
694 | status = AE_ERROR; |
695 | kfree(dpc); | |
696 | } | |
1da177e4 | 697 | } |
b976fe19 | 698 | return_ACPI_STATUS(status); |
1da177e4 | 699 | } |
4be44fcd | 700 | |
b8d35192 | 701 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 702 | |
4be44fcd | 703 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
704 | { |
705 | flush_workqueue(kacpid_wq); | |
706 | } | |
4be44fcd | 707 | |
1da177e4 LT |
708 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
709 | ||
710 | /* | |
711 | * Allocate the memory for a spinlock and initialize it. | |
712 | */ | |
967440e3 | 713 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 714 | { |
967440e3 | 715 | spin_lock_init(*handle); |
1da177e4 | 716 | |
d550d98d | 717 | return AE_OK; |
1da177e4 LT |
718 | } |
719 | ||
1da177e4 LT |
720 | /* |
721 | * Deallocate the memory for a spinlock. | |
722 | */ | |
967440e3 | 723 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 724 | { |
d550d98d | 725 | return; |
1da177e4 LT |
726 | } |
727 | ||
1da177e4 | 728 | acpi_status |
4be44fcd | 729 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 730 | { |
4be44fcd | 731 | struct semaphore *sem = NULL; |
1da177e4 | 732 | |
1da177e4 LT |
733 | |
734 | sem = acpi_os_allocate(sizeof(struct semaphore)); | |
735 | if (!sem) | |
d550d98d | 736 | return AE_NO_MEMORY; |
1da177e4 LT |
737 | memset(sem, 0, sizeof(struct semaphore)); |
738 | ||
739 | sema_init(sem, initial_units); | |
740 | ||
4be44fcd | 741 | *handle = (acpi_handle *) sem; |
1da177e4 | 742 | |
4be44fcd LB |
743 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
744 | *handle, initial_units)); | |
1da177e4 | 745 | |
d550d98d | 746 | return AE_OK; |
1da177e4 | 747 | } |
1da177e4 | 748 | |
4be44fcd | 749 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
1da177e4 LT |
750 | |
751 | /* | |
752 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
753 | * 'delete_semaphore()' function -- may result in an invalid | |
754 | * pointer dereference for non-synchronized consumers. Should | |
755 | * we at least check for blocked threads and signal/cancel them? | |
756 | */ | |
757 | ||
4be44fcd | 758 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 759 | { |
4be44fcd | 760 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 761 | |
1da177e4 LT |
762 | |
763 | if (!sem) | |
d550d98d | 764 | return AE_BAD_PARAMETER; |
1da177e4 | 765 | |
4be44fcd | 766 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 767 | |
02438d87 | 768 | kfree(sem); |
4be44fcd | 769 | sem = NULL; |
1da177e4 | 770 | |
d550d98d | 771 | return AE_OK; |
1da177e4 | 772 | } |
1da177e4 | 773 | |
4be44fcd | 774 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
1da177e4 LT |
775 | |
776 | /* | |
777 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to | |
778 | * improvise. The process is to sleep for one scheduler quantum | |
779 | * until the semaphore becomes available. Downside is that this | |
780 | * may result in starvation for timeout-based waits when there's | |
781 | * lots of semaphore activity. | |
782 | * | |
783 | * TODO: Support for units > 1? | |
784 | */ | |
4be44fcd | 785 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 786 | { |
4be44fcd LB |
787 | acpi_status status = AE_OK; |
788 | struct semaphore *sem = (struct semaphore *)handle; | |
789 | int ret = 0; | |
1da177e4 | 790 | |
1da177e4 LT |
791 | |
792 | if (!sem || (units < 1)) | |
d550d98d | 793 | return AE_BAD_PARAMETER; |
1da177e4 LT |
794 | |
795 | if (units > 1) | |
d550d98d | 796 | return AE_SUPPORT; |
1da177e4 | 797 | |
4be44fcd LB |
798 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
799 | handle, units, timeout)); | |
1da177e4 | 800 | |
d68909f4 LB |
801 | /* |
802 | * This can be called during resume with interrupts off. | |
803 | * Like boot-time, we should be single threaded and will | |
804 | * always get the lock if we try -- timeout or not. | |
805 | * If this doesn't succeed, then we will oops courtesy of | |
806 | * might_sleep() in down(). | |
807 | */ | |
808 | if (!down_trylock(sem)) | |
809 | return AE_OK; | |
810 | ||
4be44fcd | 811 | switch (timeout) { |
1da177e4 LT |
812 | /* |
813 | * No Wait: | |
814 | * -------- | |
815 | * A zero timeout value indicates that we shouldn't wait - just | |
816 | * acquire the semaphore if available otherwise return AE_TIME | |
817 | * (a.k.a. 'would block'). | |
818 | */ | |
4be44fcd LB |
819 | case 0: |
820 | if (down_trylock(sem)) | |
1da177e4 LT |
821 | status = AE_TIME; |
822 | break; | |
823 | ||
824 | /* | |
825 | * Wait Indefinitely: | |
826 | * ------------------ | |
827 | */ | |
4be44fcd | 828 | case ACPI_WAIT_FOREVER: |
1da177e4 LT |
829 | down(sem); |
830 | break; | |
831 | ||
832 | /* | |
833 | * Wait w/ Timeout: | |
834 | * ---------------- | |
835 | */ | |
4be44fcd | 836 | default: |
1da177e4 LT |
837 | // TODO: A better timeout algorithm? |
838 | { | |
839 | int i = 0; | |
4be44fcd | 840 | static const int quantum_ms = 1000 / HZ; |
1da177e4 LT |
841 | |
842 | ret = down_trylock(sem); | |
dacd9b80 | 843 | for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) { |
01a527ec | 844 | schedule_timeout_interruptible(1); |
1da177e4 LT |
845 | ret = down_trylock(sem); |
846 | } | |
4be44fcd | 847 | |
1da177e4 LT |
848 | if (ret != 0) |
849 | status = AE_TIME; | |
850 | } | |
851 | break; | |
852 | } | |
853 | ||
854 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 855 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 856 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
857 | handle, units, timeout, |
858 | acpi_format_exception(status))); | |
859 | } else { | |
860 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 861 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 862 | units, timeout)); |
1da177e4 LT |
863 | } |
864 | ||
d550d98d | 865 | return status; |
1da177e4 | 866 | } |
1da177e4 | 867 | |
4be44fcd | 868 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
1da177e4 LT |
869 | |
870 | /* | |
871 | * TODO: Support for units > 1? | |
872 | */ | |
4be44fcd | 873 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 874 | { |
4be44fcd | 875 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 876 | |
1da177e4 LT |
877 | |
878 | if (!sem || (units < 1)) | |
d550d98d | 879 | return AE_BAD_PARAMETER; |
1da177e4 LT |
880 | |
881 | if (units > 1) | |
d550d98d | 882 | return AE_SUPPORT; |
1da177e4 | 883 | |
4be44fcd LB |
884 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
885 | units)); | |
1da177e4 LT |
886 | |
887 | up(sem); | |
888 | ||
d550d98d | 889 | return AE_OK; |
1da177e4 | 890 | } |
4be44fcd | 891 | |
1da177e4 LT |
892 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
893 | ||
894 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 895 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
896 | { |
897 | ||
898 | #ifdef ENABLE_DEBUGGER | |
899 | if (acpi_in_debugger) { | |
900 | u32 chars; | |
901 | ||
902 | kdb_read(buffer, sizeof(line_buf)); | |
903 | ||
904 | /* remove the CR kdb includes */ | |
905 | chars = strlen(buffer) - 1; | |
906 | buffer[chars] = '\0'; | |
907 | } | |
908 | #endif | |
909 | ||
910 | return 0; | |
911 | } | |
4be44fcd | 912 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 913 | |
4be44fcd | 914 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 915 | { |
4be44fcd | 916 | switch (function) { |
1da177e4 LT |
917 | case ACPI_SIGNAL_FATAL: |
918 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
919 | break; | |
920 | case ACPI_SIGNAL_BREAKPOINT: | |
921 | /* | |
922 | * AML Breakpoint | |
923 | * ACPI spec. says to treat it as a NOP unless | |
924 | * you are debugging. So if/when we integrate | |
925 | * AML debugger into the kernel debugger its | |
926 | * hook will go here. But until then it is | |
927 | * not useful to print anything on breakpoints. | |
928 | */ | |
929 | break; | |
930 | default: | |
931 | break; | |
932 | } | |
933 | ||
934 | return AE_OK; | |
935 | } | |
4be44fcd | 936 | |
1da177e4 LT |
937 | EXPORT_SYMBOL(acpi_os_signal); |
938 | ||
4be44fcd | 939 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
940 | { |
941 | char *p = acpi_os_name; | |
4be44fcd | 942 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
943 | |
944 | if (!str || !*str) | |
945 | return 0; | |
946 | ||
947 | for (; count-- && str && *str; str++) { | |
948 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
949 | *p++ = *str; | |
950 | else if (*str == '\'' || *str == '"') | |
951 | continue; | |
952 | else | |
953 | break; | |
954 | } | |
955 | *p = 0; | |
956 | ||
957 | return 1; | |
4be44fcd | 958 | |
1da177e4 LT |
959 | } |
960 | ||
961 | __setup("acpi_os_name=", acpi_os_name_setup); | |
962 | ||
963 | /* | |
964 | * _OSI control | |
965 | * empty string disables _OSI | |
966 | * TBD additional string adds to _OSI | |
967 | */ | |
4be44fcd | 968 | static int __init acpi_osi_setup(char *str) |
1da177e4 LT |
969 | { |
970 | if (str == NULL || *str == '\0') { | |
971 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
972 | acpi_gbl_create_osi_method = FALSE; | |
4be44fcd | 973 | } else { |
1da177e4 | 974 | /* TBD */ |
4be44fcd LB |
975 | printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n", |
976 | str); | |
1da177e4 LT |
977 | } |
978 | ||
979 | return 1; | |
980 | } | |
981 | ||
982 | __setup("acpi_osi=", acpi_osi_setup); | |
983 | ||
984 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 985 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
986 | { |
987 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
988 | ||
989 | acpi_gbl_all_methods_serialized = TRUE; | |
990 | ||
991 | return 1; | |
992 | } | |
993 | ||
994 | __setup("acpi_serialize", acpi_serialize_setup); | |
995 | ||
996 | /* | |
997 | * Wake and Run-Time GPES are expected to be separate. | |
998 | * We disable wake-GPEs at run-time to prevent spurious | |
999 | * interrupts. | |
1000 | * | |
1001 | * However, if a system exists that shares Wake and | |
1002 | * Run-time events on the same GPE this flag is available | |
1003 | * to tell Linux to keep the wake-time GPEs enabled at run-time. | |
1004 | */ | |
4be44fcd | 1005 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
1da177e4 LT |
1006 | { |
1007 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); | |
1008 | ||
1009 | acpi_gbl_leave_wake_gpes_disabled = FALSE; | |
1010 | ||
1011 | return 1; | |
1012 | } | |
1013 | ||
1014 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); | |
1015 | ||
1016 | /* | |
1017 | * max_cstate is defined in the base kernel so modules can | |
1018 | * change it w/o depending on the state of the processor module. | |
1019 | */ | |
1020 | unsigned int max_cstate = ACPI_PROCESSOR_MAX_POWER; | |
1021 | ||
1da177e4 | 1022 | EXPORT_SYMBOL(max_cstate); |
73459f73 RM |
1023 | |
1024 | /* | |
1025 | * Acquire a spinlock. | |
1026 | * | |
1027 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1028 | */ |
1029 | ||
967440e3 | 1030 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1031 | { |
b8e4d893 | 1032 | acpi_cpu_flags flags; |
967440e3 | 1033 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1034 | return flags; |
1035 | } | |
1036 | ||
1037 | /* | |
1038 | * Release a spinlock. See above. | |
1039 | */ | |
1040 | ||
967440e3 | 1041 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1042 | { |
967440e3 | 1043 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1044 | } |
1045 | ||
73459f73 RM |
1046 | #ifndef ACPI_USE_LOCAL_CACHE |
1047 | ||
1048 | /******************************************************************************* | |
1049 | * | |
1050 | * FUNCTION: acpi_os_create_cache | |
1051 | * | |
b229cf92 BM |
1052 | * PARAMETERS: name - Ascii name for the cache |
1053 | * size - Size of each cached object | |
1054 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1055 | * cache - Where the new cache object is returned | |
73459f73 | 1056 | * |
b229cf92 | 1057 | * RETURN: status |
73459f73 RM |
1058 | * |
1059 | * DESCRIPTION: Create a cache object | |
1060 | * | |
1061 | ******************************************************************************/ | |
1062 | ||
1063 | acpi_status | |
4be44fcd | 1064 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1065 | { |
4be44fcd | 1066 | *cache = kmem_cache_create(name, size, 0, 0, NULL, NULL); |
a6fdbf90 | 1067 | if (*cache == NULL) |
b229cf92 BM |
1068 | return AE_ERROR; |
1069 | else | |
1070 | return AE_OK; | |
73459f73 RM |
1071 | } |
1072 | ||
1073 | /******************************************************************************* | |
1074 | * | |
1075 | * FUNCTION: acpi_os_purge_cache | |
1076 | * | |
1077 | * PARAMETERS: Cache - Handle to cache object | |
1078 | * | |
1079 | * RETURN: Status | |
1080 | * | |
1081 | * DESCRIPTION: Free all objects within the requested cache. | |
1082 | * | |
1083 | ******************************************************************************/ | |
1084 | ||
4be44fcd | 1085 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1086 | { |
50dd0969 | 1087 | kmem_cache_shrink(cache); |
4be44fcd | 1088 | return (AE_OK); |
73459f73 RM |
1089 | } |
1090 | ||
1091 | /******************************************************************************* | |
1092 | * | |
1093 | * FUNCTION: acpi_os_delete_cache | |
1094 | * | |
1095 | * PARAMETERS: Cache - Handle to cache object | |
1096 | * | |
1097 | * RETURN: Status | |
1098 | * | |
1099 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1100 | * cache object. | |
1101 | * | |
1102 | ******************************************************************************/ | |
1103 | ||
4be44fcd | 1104 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1105 | { |
1a1d92c1 | 1106 | kmem_cache_destroy(cache); |
4be44fcd | 1107 | return (AE_OK); |
73459f73 RM |
1108 | } |
1109 | ||
1110 | /******************************************************************************* | |
1111 | * | |
1112 | * FUNCTION: acpi_os_release_object | |
1113 | * | |
1114 | * PARAMETERS: Cache - Handle to cache object | |
1115 | * Object - The object to be released | |
1116 | * | |
1117 | * RETURN: None | |
1118 | * | |
1119 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1120 | * the object is deleted. | |
1121 | * | |
1122 | ******************************************************************************/ | |
1123 | ||
4be44fcd | 1124 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1125 | { |
4be44fcd LB |
1126 | kmem_cache_free(cache, object); |
1127 | return (AE_OK); | |
73459f73 RM |
1128 | } |
1129 | ||
b229cf92 BM |
1130 | /****************************************************************************** |
1131 | * | |
1132 | * FUNCTION: acpi_os_validate_interface | |
1133 | * | |
1134 | * PARAMETERS: interface - Requested interface to be validated | |
1135 | * | |
1136 | * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise | |
1137 | * | |
1138 | * DESCRIPTION: Match an interface string to the interfaces supported by the | |
1139 | * host. Strings originate from an AML call to the _OSI method. | |
1140 | * | |
1141 | *****************************************************************************/ | |
1142 | ||
1143 | acpi_status | |
1144 | acpi_os_validate_interface (char *interface) | |
1145 | { | |
1146 | ||
1147 | return AE_SUPPORT; | |
1148 | } | |
1149 | ||
1150 | ||
1151 | /****************************************************************************** | |
1152 | * | |
1153 | * FUNCTION: acpi_os_validate_address | |
1154 | * | |
1155 | * PARAMETERS: space_id - ACPI space ID | |
1156 | * address - Physical address | |
1157 | * length - Address length | |
1158 | * | |
1159 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1160 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1161 | * | |
1162 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1163 | * the addresses accessed by AML operation regions. | |
1164 | * | |
1165 | *****************************************************************************/ | |
1166 | ||
1167 | acpi_status | |
1168 | acpi_os_validate_address ( | |
1169 | u8 space_id, | |
1170 | acpi_physical_address address, | |
1171 | acpi_size length) | |
1172 | { | |
1173 | ||
1174 | return AE_OK; | |
1175 | } | |
1176 | ||
1177 | ||
73459f73 | 1178 | #endif |