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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 |
4be44fcd | 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 | 70 | |
30e332f3 | 71 | int acpi_specific_hotkey_enabled = TRUE; |
fb9802fa LY |
72 | EXPORT_SYMBOL(acpi_specific_hotkey_enabled); |
73 | ||
1da177e4 LT |
74 | static unsigned int acpi_irq_irq; |
75 | static acpi_osd_handler acpi_irq_handler; | |
76 | static void *acpi_irq_context; | |
77 | static struct workqueue_struct *kacpid_wq; | |
78 | ||
9a47cdb1 BH |
79 | static void __init acpi_request_region (struct acpi_generic_address *addr, |
80 | unsigned int length, char *desc) | |
81 | { | |
82 | struct resource *res; | |
83 | ||
84 | if (!addr->address || !length) | |
85 | return; | |
86 | ||
eee3c859 | 87 | if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
9a47cdb1 | 88 | res = request_region(addr->address, length, desc); |
eee3c859 | 89 | else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
9a47cdb1 BH |
90 | res = request_mem_region(addr->address, length, desc); |
91 | } | |
92 | ||
93 | static int __init acpi_reserve_resources(void) | |
94 | { | |
eee3c859 | 95 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
96 | "ACPI PM1a_EVT_BLK"); |
97 | ||
eee3c859 | 98 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
99 | "ACPI PM1b_EVT_BLK"); |
100 | ||
eee3c859 | 101 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
102 | "ACPI PM1a_CNT_BLK"); |
103 | ||
eee3c859 | 104 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
105 | "ACPI PM1b_CNT_BLK"); |
106 | ||
eee3c859 LB |
107 | if (acpi_gbl_FADT.pm_timer_length == 4) |
108 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 109 | |
eee3c859 | 110 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
111 | "ACPI PM2_CNT_BLK"); |
112 | ||
113 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
114 | ||
eee3c859 LB |
115 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
116 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
117 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 118 | |
eee3c859 LB |
119 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
120 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
121 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
122 | |
123 | return 0; | |
124 | } | |
125 | device_initcall(acpi_reserve_resources); | |
126 | ||
4be44fcd | 127 | acpi_status acpi_os_initialize(void) |
1da177e4 LT |
128 | { |
129 | return AE_OK; | |
130 | } | |
131 | ||
4be44fcd | 132 | acpi_status acpi_os_initialize1(void) |
1da177e4 LT |
133 | { |
134 | /* | |
135 | * Initialize PCI configuration space access, as we'll need to access | |
136 | * it while walking the namespace (bus 0 and root bridges w/ _BBNs). | |
137 | */ | |
1da177e4 | 138 | if (!raw_pci_ops) { |
4be44fcd LB |
139 | printk(KERN_ERR PREFIX |
140 | "Access to PCI configuration space unavailable\n"); | |
1da177e4 LT |
141 | return AE_NULL_ENTRY; |
142 | } | |
1da177e4 LT |
143 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
144 | BUG_ON(!kacpid_wq); | |
b976fe19 | 145 | |
1da177e4 LT |
146 | return AE_OK; |
147 | } | |
148 | ||
4be44fcd | 149 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
150 | { |
151 | if (acpi_irq_handler) { | |
152 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
153 | acpi_irq_handler); | |
154 | } | |
155 | ||
156 | destroy_workqueue(kacpid_wq); | |
157 | ||
158 | return AE_OK; | |
159 | } | |
160 | ||
4be44fcd | 161 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
162 | { |
163 | va_list args; | |
164 | va_start(args, fmt); | |
165 | acpi_os_vprintf(fmt, args); | |
166 | va_end(args); | |
167 | } | |
4be44fcd | 168 | |
1da177e4 LT |
169 | EXPORT_SYMBOL(acpi_os_printf); |
170 | ||
4be44fcd | 171 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
172 | { |
173 | static char buffer[512]; | |
4be44fcd | 174 | |
1da177e4 LT |
175 | vsprintf(buffer, fmt, args); |
176 | ||
177 | #ifdef ENABLE_DEBUGGER | |
178 | if (acpi_in_debugger) { | |
179 | kdb_printf("%s", buffer); | |
180 | } else { | |
181 | printk("%s", buffer); | |
182 | } | |
183 | #else | |
184 | printk("%s", buffer); | |
185 | #endif | |
186 | } | |
187 | ||
ad71860a | 188 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
189 | { |
190 | if (efi_enabled) { | |
b2c99e3c | 191 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 192 | return efi.acpi20; |
b2c99e3c | 193 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 194 | return efi.acpi; |
1da177e4 | 195 | else { |
4be44fcd LB |
196 | printk(KERN_ERR PREFIX |
197 | "System description tables not found\n"); | |
ad71860a | 198 | return 0; |
1da177e4 | 199 | } |
ad71860a AS |
200 | } else |
201 | return acpi_find_rsdp(); | |
1da177e4 LT |
202 | } |
203 | ||
ad71860a | 204 | void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
1da177e4 | 205 | { |
9f4fd61f BH |
206 | if (phys > ULONG_MAX) { |
207 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
ad71860a | 208 | return 0; |
1da177e4 | 209 | } |
ad71860a AS |
210 | if (acpi_gbl_permanent_mmap) |
211 | /* | |
212 | * ioremap checks to ensure this is in reserved space | |
213 | */ | |
214 | return ioremap((unsigned long)phys, size); | |
215 | else | |
216 | return __acpi_map_table((unsigned long)phys, size); | |
1da177e4 | 217 | } |
55a82ab3 | 218 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 219 | |
4be44fcd | 220 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
1da177e4 | 221 | { |
ad71860a AS |
222 | if (acpi_gbl_permanent_mmap) { |
223 | iounmap(virt); | |
224 | } | |
1da177e4 | 225 | } |
55a82ab3 | 226 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 LT |
227 | |
228 | #ifdef ACPI_FUTURE_USAGE | |
229 | acpi_status | |
4be44fcd | 230 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 231 | { |
4be44fcd | 232 | if (!phys || !virt) |
1da177e4 LT |
233 | return AE_BAD_PARAMETER; |
234 | ||
235 | *phys = virt_to_phys(virt); | |
236 | ||
237 | return AE_OK; | |
238 | } | |
239 | #endif | |
240 | ||
241 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
242 | ||
243 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
244 | ||
245 | acpi_status | |
4be44fcd LB |
246 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
247 | acpi_string * new_val) | |
1da177e4 LT |
248 | { |
249 | if (!init_val || !new_val) | |
250 | return AE_BAD_PARAMETER; | |
251 | ||
252 | *new_val = NULL; | |
4be44fcd | 253 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 254 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 255 | acpi_os_name); |
1da177e4 LT |
256 | *new_val = acpi_os_name; |
257 | } | |
258 | ||
259 | return AE_OK; | |
260 | } | |
261 | ||
262 | acpi_status | |
4be44fcd LB |
263 | acpi_os_table_override(struct acpi_table_header * existing_table, |
264 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
265 | { |
266 | if (!existing_table || !new_table) | |
267 | return AE_BAD_PARAMETER; | |
268 | ||
269 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
270 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 271 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 LT |
272 | else |
273 | *new_table = NULL; | |
274 | #else | |
275 | *new_table = NULL; | |
276 | #endif | |
277 | return AE_OK; | |
278 | } | |
279 | ||
7d12e780 | 280 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 281 | { |
4be44fcd | 282 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
1da177e4 LT |
283 | } |
284 | ||
285 | acpi_status | |
4be44fcd LB |
286 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
287 | void *context) | |
1da177e4 LT |
288 | { |
289 | unsigned int irq; | |
290 | ||
291 | /* | |
292 | * Ignore the GSI from the core, and use the value in our copy of the | |
293 | * FADT. It may not be the same if an interrupt source override exists | |
294 | * for the SCI. | |
295 | */ | |
cee324b1 | 296 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
297 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
298 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
299 | gsi); | |
300 | return AE_OK; | |
301 | } | |
302 | ||
303 | acpi_irq_handler = handler; | |
304 | acpi_irq_context = context; | |
dace1453 | 305 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
306 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
307 | return AE_NOT_ACQUIRED; | |
308 | } | |
309 | acpi_irq_irq = irq; | |
310 | ||
311 | return AE_OK; | |
312 | } | |
313 | ||
4be44fcd | 314 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
315 | { |
316 | if (irq) { | |
317 | free_irq(irq, acpi_irq); | |
318 | acpi_irq_handler = NULL; | |
319 | acpi_irq_irq = 0; | |
320 | } | |
321 | ||
322 | return AE_OK; | |
323 | } | |
324 | ||
325 | /* | |
326 | * Running in interpreter thread context, safe to sleep | |
327 | */ | |
328 | ||
4be44fcd | 329 | void acpi_os_sleep(acpi_integer ms) |
1da177e4 | 330 | { |
01a527ec | 331 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 332 | } |
4be44fcd | 333 | |
1da177e4 LT |
334 | EXPORT_SYMBOL(acpi_os_sleep); |
335 | ||
4be44fcd | 336 | void acpi_os_stall(u32 us) |
1da177e4 LT |
337 | { |
338 | while (us) { | |
339 | u32 delay = 1000; | |
340 | ||
341 | if (delay > us) | |
342 | delay = us; | |
343 | udelay(delay); | |
344 | touch_nmi_watchdog(); | |
345 | us -= delay; | |
346 | } | |
347 | } | |
4be44fcd | 348 | |
1da177e4 LT |
349 | EXPORT_SYMBOL(acpi_os_stall); |
350 | ||
351 | /* | |
352 | * Support ACPI 3.0 AML Timer operand | |
353 | * Returns 64-bit free-running, monotonically increasing timer | |
354 | * with 100ns granularity | |
355 | */ | |
4be44fcd | 356 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
357 | { |
358 | static u64 t; | |
359 | ||
360 | #ifdef CONFIG_HPET | |
361 | /* TBD: use HPET if available */ | |
362 | #endif | |
363 | ||
364 | #ifdef CONFIG_X86_PM_TIMER | |
365 | /* TBD: default to PM timer if HPET was not available */ | |
366 | #endif | |
367 | if (!t) | |
368 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
369 | ||
370 | return ++t; | |
371 | } | |
372 | ||
4be44fcd | 373 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
374 | { |
375 | u32 dummy; | |
376 | ||
377 | if (!value) | |
378 | value = &dummy; | |
379 | ||
4be44fcd | 380 | switch (width) { |
1da177e4 | 381 | case 8: |
4be44fcd | 382 | *(u8 *) value = inb(port); |
1da177e4 LT |
383 | break; |
384 | case 16: | |
4be44fcd | 385 | *(u16 *) value = inw(port); |
1da177e4 LT |
386 | break; |
387 | case 32: | |
4be44fcd | 388 | *(u32 *) value = inl(port); |
1da177e4 LT |
389 | break; |
390 | default: | |
391 | BUG(); | |
392 | } | |
393 | ||
394 | return AE_OK; | |
395 | } | |
4be44fcd | 396 | |
1da177e4 LT |
397 | EXPORT_SYMBOL(acpi_os_read_port); |
398 | ||
4be44fcd | 399 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 400 | { |
4be44fcd | 401 | switch (width) { |
1da177e4 LT |
402 | case 8: |
403 | outb(value, port); | |
404 | break; | |
405 | case 16: | |
406 | outw(value, port); | |
407 | break; | |
408 | case 32: | |
409 | outl(value, port); | |
410 | break; | |
411 | default: | |
412 | BUG(); | |
413 | } | |
414 | ||
415 | return AE_OK; | |
416 | } | |
4be44fcd | 417 | |
1da177e4 LT |
418 | EXPORT_SYMBOL(acpi_os_write_port); |
419 | ||
420 | acpi_status | |
4be44fcd | 421 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 422 | { |
4be44fcd LB |
423 | u32 dummy; |
424 | void __iomem *virt_addr; | |
1da177e4 | 425 | |
9f4fd61f | 426 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
427 | if (!value) |
428 | value = &dummy; | |
429 | ||
430 | switch (width) { | |
431 | case 8: | |
4be44fcd | 432 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
433 | break; |
434 | case 16: | |
4be44fcd | 435 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
436 | break; |
437 | case 32: | |
4be44fcd | 438 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
439 | break; |
440 | default: | |
441 | BUG(); | |
442 | } | |
443 | ||
9f4fd61f | 444 | iounmap(virt_addr); |
1da177e4 LT |
445 | |
446 | return AE_OK; | |
447 | } | |
448 | ||
449 | acpi_status | |
4be44fcd | 450 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 451 | { |
4be44fcd | 452 | void __iomem *virt_addr; |
1da177e4 | 453 | |
9f4fd61f | 454 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
455 | |
456 | switch (width) { | |
457 | case 8: | |
458 | writeb(value, virt_addr); | |
459 | break; | |
460 | case 16: | |
461 | writew(value, virt_addr); | |
462 | break; | |
463 | case 32: | |
464 | writel(value, virt_addr); | |
465 | break; | |
466 | default: | |
467 | BUG(); | |
468 | } | |
469 | ||
9f4fd61f | 470 | iounmap(virt_addr); |
1da177e4 LT |
471 | |
472 | return AE_OK; | |
473 | } | |
474 | ||
1da177e4 | 475 | acpi_status |
4be44fcd LB |
476 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
477 | void *value, u32 width) | |
1da177e4 LT |
478 | { |
479 | int result, size; | |
480 | ||
481 | if (!value) | |
482 | return AE_BAD_PARAMETER; | |
483 | ||
484 | switch (width) { | |
485 | case 8: | |
486 | size = 1; | |
487 | break; | |
488 | case 16: | |
489 | size = 2; | |
490 | break; | |
491 | case 32: | |
492 | size = 4; | |
493 | break; | |
494 | default: | |
495 | return AE_ERROR; | |
496 | } | |
497 | ||
498 | BUG_ON(!raw_pci_ops); | |
499 | ||
500 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
501 | PCI_DEVFN(pci_id->device, pci_id->function), |
502 | reg, size, value); | |
1da177e4 LT |
503 | |
504 | return (result ? AE_ERROR : AE_OK); | |
505 | } | |
4be44fcd | 506 | |
1da177e4 LT |
507 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
508 | ||
509 | acpi_status | |
4be44fcd LB |
510 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
511 | acpi_integer value, u32 width) | |
1da177e4 LT |
512 | { |
513 | int result, size; | |
514 | ||
515 | switch (width) { | |
516 | case 8: | |
517 | size = 1; | |
518 | break; | |
519 | case 16: | |
520 | size = 2; | |
521 | break; | |
522 | case 32: | |
523 | size = 4; | |
524 | break; | |
525 | default: | |
526 | return AE_ERROR; | |
527 | } | |
528 | ||
529 | BUG_ON(!raw_pci_ops); | |
530 | ||
531 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
532 | PCI_DEVFN(pci_id->device, pci_id->function), |
533 | reg, size, value); | |
1da177e4 LT |
534 | |
535 | return (result ? AE_ERROR : AE_OK); | |
536 | } | |
537 | ||
538 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
539 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
540 | acpi_handle chandle, /* current node */ | |
541 | struct acpi_pci_id **id, | |
542 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 543 | { |
4be44fcd LB |
544 | acpi_handle handle; |
545 | struct acpi_pci_id *pci_id = *id; | |
546 | acpi_status status; | |
547 | unsigned long temp; | |
548 | acpi_object_type type; | |
549 | u8 tu8; | |
1da177e4 LT |
550 | |
551 | acpi_get_parent(chandle, &handle); | |
552 | if (handle != rhandle) { | |
4be44fcd LB |
553 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
554 | bus_number); | |
1da177e4 LT |
555 | |
556 | status = acpi_get_type(handle, &type); | |
4be44fcd | 557 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
558 | return; |
559 | ||
4be44fcd LB |
560 | status = |
561 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, | |
562 | &temp); | |
1da177e4 | 563 | if (ACPI_SUCCESS(status)) { |
4be44fcd LB |
564 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
565 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
566 | |
567 | if (*is_bridge) | |
568 | pci_id->bus = *bus_number; | |
569 | ||
570 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd LB |
571 | status = |
572 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, | |
573 | 8); | |
574 | if (ACPI_SUCCESS(status) | |
575 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { | |
576 | status = | |
577 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
578 | &tu8, 8); | |
1da177e4 LT |
579 | if (!ACPI_SUCCESS(status)) { |
580 | /* Certainly broken... FIX ME */ | |
581 | return; | |
582 | } | |
583 | *is_bridge = 1; | |
584 | pci_id->bus = tu8; | |
4be44fcd LB |
585 | status = |
586 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
587 | &tu8, 8); | |
1da177e4 LT |
588 | if (ACPI_SUCCESS(status)) { |
589 | *bus_number = tu8; | |
590 | } | |
591 | } else | |
592 | *is_bridge = 0; | |
593 | } | |
594 | } | |
595 | } | |
596 | ||
4be44fcd LB |
597 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
598 | acpi_handle chandle, /* current node */ | |
599 | struct acpi_pci_id **id) | |
1da177e4 LT |
600 | { |
601 | int is_bridge = 1; | |
602 | u8 bus_number = (*id)->bus; | |
603 | ||
604 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
605 | } | |
606 | ||
65f27f38 | 607 | static void acpi_os_execute_deferred(struct work_struct *work) |
1da177e4 | 608 | { |
65f27f38 | 609 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
1da177e4 | 610 | |
1da177e4 | 611 | if (!dpc) { |
6468463a | 612 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); |
d550d98d | 613 | return; |
1da177e4 LT |
614 | } |
615 | ||
616 | dpc->function(dpc->context); | |
617 | ||
618 | kfree(dpc); | |
619 | ||
d550d98d | 620 | return; |
1da177e4 LT |
621 | } |
622 | ||
b8d35192 AS |
623 | /******************************************************************************* |
624 | * | |
625 | * FUNCTION: acpi_os_execute | |
626 | * | |
627 | * PARAMETERS: Type - Type of the callback | |
628 | * Function - Function to be executed | |
629 | * Context - Function parameters | |
630 | * | |
631 | * RETURN: Status | |
632 | * | |
633 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
634 | * immediately executes function on a separate thread. | |
635 | * | |
636 | ******************************************************************************/ | |
637 | ||
638 | acpi_status acpi_os_execute(acpi_execute_type type, | |
4be44fcd | 639 | acpi_osd_exec_callback function, void *context) |
1da177e4 | 640 | { |
4be44fcd LB |
641 | acpi_status status = AE_OK; |
642 | struct acpi_os_dpc *dpc; | |
72945b2b | 643 | |
b976fe19 LT |
644 | ACPI_FUNCTION_TRACE("os_queue_for_execution"); |
645 | ||
72945b2b LB |
646 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
647 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
648 | function, context)); | |
1da177e4 LT |
649 | |
650 | if (!function) | |
b976fe19 | 651 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
72945b2b | 652 | |
1da177e4 LT |
653 | /* |
654 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 655 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
656 | * way that allows us to also free its memory inside the callee. |
657 | * Because we may want to schedule several tasks with different | |
658 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 659 | * having a static work_struct. |
1da177e4 | 660 | */ |
72945b2b | 661 | |
65f27f38 | 662 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 663 | if (!dpc) |
b976fe19 LT |
664 | return_ACPI_STATUS(AE_NO_MEMORY); |
665 | ||
1da177e4 LT |
666 | dpc->function = function; |
667 | dpc->context = context; | |
b976fe19 | 668 | |
65f27f38 DH |
669 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); |
670 | if (!queue_work(kacpid_wq, &dpc->work)) { | |
b976fe19 LT |
671 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
672 | "Call to queue_work() failed.\n")); | |
37605a69 | 673 | kfree(dpc); |
b976fe19 | 674 | status = AE_ERROR; |
1da177e4 | 675 | } |
b976fe19 LT |
676 | |
677 | return_ACPI_STATUS(status); | |
1da177e4 | 678 | } |
4be44fcd | 679 | |
b8d35192 | 680 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 681 | |
4be44fcd | 682 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
683 | { |
684 | flush_workqueue(kacpid_wq); | |
685 | } | |
4be44fcd | 686 | |
1da177e4 LT |
687 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
688 | ||
689 | /* | |
690 | * Allocate the memory for a spinlock and initialize it. | |
691 | */ | |
967440e3 | 692 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 693 | { |
967440e3 | 694 | spin_lock_init(*handle); |
1da177e4 | 695 | |
d550d98d | 696 | return AE_OK; |
1da177e4 LT |
697 | } |
698 | ||
1da177e4 LT |
699 | /* |
700 | * Deallocate the memory for a spinlock. | |
701 | */ | |
967440e3 | 702 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 703 | { |
d550d98d | 704 | return; |
1da177e4 LT |
705 | } |
706 | ||
1da177e4 | 707 | acpi_status |
4be44fcd | 708 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 709 | { |
4be44fcd | 710 | struct semaphore *sem = NULL; |
1da177e4 | 711 | |
1da177e4 LT |
712 | |
713 | sem = acpi_os_allocate(sizeof(struct semaphore)); | |
714 | if (!sem) | |
d550d98d | 715 | return AE_NO_MEMORY; |
1da177e4 LT |
716 | memset(sem, 0, sizeof(struct semaphore)); |
717 | ||
718 | sema_init(sem, initial_units); | |
719 | ||
4be44fcd | 720 | *handle = (acpi_handle *) sem; |
1da177e4 | 721 | |
4be44fcd LB |
722 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
723 | *handle, initial_units)); | |
1da177e4 | 724 | |
d550d98d | 725 | return AE_OK; |
1da177e4 | 726 | } |
1da177e4 | 727 | |
4be44fcd | 728 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
1da177e4 LT |
729 | |
730 | /* | |
731 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
732 | * 'delete_semaphore()' function -- may result in an invalid | |
733 | * pointer dereference for non-synchronized consumers. Should | |
734 | * we at least check for blocked threads and signal/cancel them? | |
735 | */ | |
736 | ||
4be44fcd | 737 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 738 | { |
4be44fcd | 739 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 740 | |
1da177e4 LT |
741 | |
742 | if (!sem) | |
d550d98d | 743 | return AE_BAD_PARAMETER; |
1da177e4 | 744 | |
4be44fcd | 745 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 746 | |
02438d87 | 747 | kfree(sem); |
4be44fcd | 748 | sem = NULL; |
1da177e4 | 749 | |
d550d98d | 750 | return AE_OK; |
1da177e4 | 751 | } |
1da177e4 | 752 | |
4be44fcd | 753 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
1da177e4 LT |
754 | |
755 | /* | |
756 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to | |
757 | * improvise. The process is to sleep for one scheduler quantum | |
758 | * until the semaphore becomes available. Downside is that this | |
759 | * may result in starvation for timeout-based waits when there's | |
760 | * lots of semaphore activity. | |
761 | * | |
762 | * TODO: Support for units > 1? | |
763 | */ | |
4be44fcd | 764 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 765 | { |
4be44fcd LB |
766 | acpi_status status = AE_OK; |
767 | struct semaphore *sem = (struct semaphore *)handle; | |
768 | int ret = 0; | |
1da177e4 | 769 | |
1da177e4 LT |
770 | |
771 | if (!sem || (units < 1)) | |
d550d98d | 772 | return AE_BAD_PARAMETER; |
1da177e4 LT |
773 | |
774 | if (units > 1) | |
d550d98d | 775 | return AE_SUPPORT; |
1da177e4 | 776 | |
4be44fcd LB |
777 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
778 | handle, units, timeout)); | |
1da177e4 | 779 | |
d68909f4 LB |
780 | /* |
781 | * This can be called during resume with interrupts off. | |
782 | * Like boot-time, we should be single threaded and will | |
783 | * always get the lock if we try -- timeout or not. | |
784 | * If this doesn't succeed, then we will oops courtesy of | |
785 | * might_sleep() in down(). | |
786 | */ | |
787 | if (!down_trylock(sem)) | |
788 | return AE_OK; | |
789 | ||
4be44fcd | 790 | switch (timeout) { |
1da177e4 LT |
791 | /* |
792 | * No Wait: | |
793 | * -------- | |
794 | * A zero timeout value indicates that we shouldn't wait - just | |
795 | * acquire the semaphore if available otherwise return AE_TIME | |
796 | * (a.k.a. 'would block'). | |
797 | */ | |
4be44fcd LB |
798 | case 0: |
799 | if (down_trylock(sem)) | |
1da177e4 LT |
800 | status = AE_TIME; |
801 | break; | |
802 | ||
803 | /* | |
804 | * Wait Indefinitely: | |
805 | * ------------------ | |
806 | */ | |
4be44fcd | 807 | case ACPI_WAIT_FOREVER: |
1da177e4 LT |
808 | down(sem); |
809 | break; | |
810 | ||
811 | /* | |
812 | * Wait w/ Timeout: | |
813 | * ---------------- | |
814 | */ | |
4be44fcd | 815 | default: |
1da177e4 LT |
816 | // TODO: A better timeout algorithm? |
817 | { | |
818 | int i = 0; | |
4be44fcd | 819 | static const int quantum_ms = 1000 / HZ; |
1da177e4 LT |
820 | |
821 | ret = down_trylock(sem); | |
dacd9b80 | 822 | for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) { |
01a527ec | 823 | schedule_timeout_interruptible(1); |
1da177e4 LT |
824 | ret = down_trylock(sem); |
825 | } | |
4be44fcd | 826 | |
1da177e4 LT |
827 | if (ret != 0) |
828 | status = AE_TIME; | |
829 | } | |
830 | break; | |
831 | } | |
832 | ||
833 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 834 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 835 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
836 | handle, units, timeout, |
837 | acpi_format_exception(status))); | |
838 | } else { | |
839 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 840 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 841 | units, timeout)); |
1da177e4 LT |
842 | } |
843 | ||
d550d98d | 844 | return status; |
1da177e4 | 845 | } |
1da177e4 | 846 | |
4be44fcd | 847 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
1da177e4 LT |
848 | |
849 | /* | |
850 | * TODO: Support for units > 1? | |
851 | */ | |
4be44fcd | 852 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 853 | { |
4be44fcd | 854 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 855 | |
1da177e4 LT |
856 | |
857 | if (!sem || (units < 1)) | |
d550d98d | 858 | return AE_BAD_PARAMETER; |
1da177e4 LT |
859 | |
860 | if (units > 1) | |
d550d98d | 861 | return AE_SUPPORT; |
1da177e4 | 862 | |
4be44fcd LB |
863 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
864 | units)); | |
1da177e4 LT |
865 | |
866 | up(sem); | |
867 | ||
d550d98d | 868 | return AE_OK; |
1da177e4 | 869 | } |
4be44fcd | 870 | |
1da177e4 LT |
871 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
872 | ||
873 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 874 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
875 | { |
876 | ||
877 | #ifdef ENABLE_DEBUGGER | |
878 | if (acpi_in_debugger) { | |
879 | u32 chars; | |
880 | ||
881 | kdb_read(buffer, sizeof(line_buf)); | |
882 | ||
883 | /* remove the CR kdb includes */ | |
884 | chars = strlen(buffer) - 1; | |
885 | buffer[chars] = '\0'; | |
886 | } | |
887 | #endif | |
888 | ||
889 | return 0; | |
890 | } | |
4be44fcd | 891 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 LT |
892 | |
893 | /* Assumes no unreadable holes inbetween */ | |
4be44fcd | 894 | u8 acpi_os_readable(void *ptr, acpi_size len) |
1da177e4 | 895 | { |
4be44fcd | 896 | #if defined(__i386__) || defined(__x86_64__) |
1da177e4 | 897 | char tmp; |
4be44fcd LB |
898 | return !__get_user(tmp, (char __user *)ptr) |
899 | && !__get_user(tmp, (char __user *)ptr + len - 1); | |
1da177e4 LT |
900 | #endif |
901 | return 1; | |
902 | } | |
903 | ||
904 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 905 | u8 acpi_os_writable(void *ptr, acpi_size len) |
1da177e4 LT |
906 | { |
907 | /* could do dummy write (racy) or a kernel page table lookup. | |
908 | The later may be difficult at early boot when kmap doesn't work yet. */ | |
909 | return 1; | |
910 | } | |
911 | #endif | |
912 | ||
4be44fcd | 913 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 914 | { |
4be44fcd | 915 | switch (function) { |
1da177e4 LT |
916 | case ACPI_SIGNAL_FATAL: |
917 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
918 | break; | |
919 | case ACPI_SIGNAL_BREAKPOINT: | |
920 | /* | |
921 | * AML Breakpoint | |
922 | * ACPI spec. says to treat it as a NOP unless | |
923 | * you are debugging. So if/when we integrate | |
924 | * AML debugger into the kernel debugger its | |
925 | * hook will go here. But until then it is | |
926 | * not useful to print anything on breakpoints. | |
927 | */ | |
928 | break; | |
929 | default: | |
930 | break; | |
931 | } | |
932 | ||
933 | return AE_OK; | |
934 | } | |
4be44fcd | 935 | |
1da177e4 LT |
936 | EXPORT_SYMBOL(acpi_os_signal); |
937 | ||
4be44fcd | 938 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
939 | { |
940 | char *p = acpi_os_name; | |
4be44fcd | 941 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
942 | |
943 | if (!str || !*str) | |
944 | return 0; | |
945 | ||
946 | for (; count-- && str && *str; str++) { | |
947 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
948 | *p++ = *str; | |
949 | else if (*str == '\'' || *str == '"') | |
950 | continue; | |
951 | else | |
952 | break; | |
953 | } | |
954 | *p = 0; | |
955 | ||
956 | return 1; | |
4be44fcd | 957 | |
1da177e4 LT |
958 | } |
959 | ||
960 | __setup("acpi_os_name=", acpi_os_name_setup); | |
961 | ||
962 | /* | |
963 | * _OSI control | |
964 | * empty string disables _OSI | |
965 | * TBD additional string adds to _OSI | |
966 | */ | |
4be44fcd | 967 | static int __init acpi_osi_setup(char *str) |
1da177e4 LT |
968 | { |
969 | if (str == NULL || *str == '\0') { | |
970 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
971 | acpi_gbl_create_osi_method = FALSE; | |
4be44fcd | 972 | } else { |
1da177e4 | 973 | /* TBD */ |
4be44fcd LB |
974 | printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n", |
975 | str); | |
1da177e4 LT |
976 | } |
977 | ||
978 | return 1; | |
979 | } | |
980 | ||
981 | __setup("acpi_osi=", acpi_osi_setup); | |
982 | ||
983 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 984 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
985 | { |
986 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
987 | ||
988 | acpi_gbl_all_methods_serialized = TRUE; | |
989 | ||
990 | return 1; | |
991 | } | |
992 | ||
993 | __setup("acpi_serialize", acpi_serialize_setup); | |
994 | ||
995 | /* | |
996 | * Wake and Run-Time GPES are expected to be separate. | |
997 | * We disable wake-GPEs at run-time to prevent spurious | |
998 | * interrupts. | |
999 | * | |
1000 | * However, if a system exists that shares Wake and | |
1001 | * Run-time events on the same GPE this flag is available | |
1002 | * to tell Linux to keep the wake-time GPEs enabled at run-time. | |
1003 | */ | |
4be44fcd | 1004 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
1da177e4 LT |
1005 | { |
1006 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); | |
1007 | ||
1008 | acpi_gbl_leave_wake_gpes_disabled = FALSE; | |
1009 | ||
1010 | return 1; | |
1011 | } | |
1012 | ||
1013 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); | |
1014 | ||
8713cbef | 1015 | static int __init acpi_hotkey_setup(char *str) |
fb9802fa | 1016 | { |
30e332f3 | 1017 | acpi_specific_hotkey_enabled = FALSE; |
fb9802fa LY |
1018 | return 1; |
1019 | } | |
1020 | ||
30e332f3 | 1021 | __setup("acpi_generic_hotkey", acpi_hotkey_setup); |
fb9802fa | 1022 | |
1da177e4 LT |
1023 | /* |
1024 | * max_cstate is defined in the base kernel so modules can | |
1025 | * change it w/o depending on the state of the processor module. | |
1026 | */ | |
1027 | unsigned int max_cstate = ACPI_PROCESSOR_MAX_POWER; | |
1028 | ||
1da177e4 | 1029 | EXPORT_SYMBOL(max_cstate); |
73459f73 RM |
1030 | |
1031 | /* | |
1032 | * Acquire a spinlock. | |
1033 | * | |
1034 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1035 | */ |
1036 | ||
967440e3 | 1037 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1038 | { |
b8e4d893 | 1039 | acpi_cpu_flags flags; |
967440e3 | 1040 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1041 | return flags; |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Release a spinlock. See above. | |
1046 | */ | |
1047 | ||
967440e3 | 1048 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1049 | { |
967440e3 | 1050 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1051 | } |
1052 | ||
73459f73 RM |
1053 | #ifndef ACPI_USE_LOCAL_CACHE |
1054 | ||
1055 | /******************************************************************************* | |
1056 | * | |
1057 | * FUNCTION: acpi_os_create_cache | |
1058 | * | |
b229cf92 BM |
1059 | * PARAMETERS: name - Ascii name for the cache |
1060 | * size - Size of each cached object | |
1061 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1062 | * cache - Where the new cache object is returned | |
73459f73 | 1063 | * |
b229cf92 | 1064 | * RETURN: status |
73459f73 RM |
1065 | * |
1066 | * DESCRIPTION: Create a cache object | |
1067 | * | |
1068 | ******************************************************************************/ | |
1069 | ||
1070 | acpi_status | |
4be44fcd | 1071 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1072 | { |
4be44fcd | 1073 | *cache = kmem_cache_create(name, size, 0, 0, NULL, NULL); |
a6fdbf90 | 1074 | if (*cache == NULL) |
b229cf92 BM |
1075 | return AE_ERROR; |
1076 | else | |
1077 | return AE_OK; | |
73459f73 RM |
1078 | } |
1079 | ||
1080 | /******************************************************************************* | |
1081 | * | |
1082 | * FUNCTION: acpi_os_purge_cache | |
1083 | * | |
1084 | * PARAMETERS: Cache - Handle to cache object | |
1085 | * | |
1086 | * RETURN: Status | |
1087 | * | |
1088 | * DESCRIPTION: Free all objects within the requested cache. | |
1089 | * | |
1090 | ******************************************************************************/ | |
1091 | ||
4be44fcd | 1092 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1093 | { |
50dd0969 | 1094 | kmem_cache_shrink(cache); |
4be44fcd | 1095 | return (AE_OK); |
73459f73 RM |
1096 | } |
1097 | ||
1098 | /******************************************************************************* | |
1099 | * | |
1100 | * FUNCTION: acpi_os_delete_cache | |
1101 | * | |
1102 | * PARAMETERS: Cache - Handle to cache object | |
1103 | * | |
1104 | * RETURN: Status | |
1105 | * | |
1106 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1107 | * cache object. | |
1108 | * | |
1109 | ******************************************************************************/ | |
1110 | ||
4be44fcd | 1111 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1112 | { |
1a1d92c1 | 1113 | kmem_cache_destroy(cache); |
4be44fcd | 1114 | return (AE_OK); |
73459f73 RM |
1115 | } |
1116 | ||
1117 | /******************************************************************************* | |
1118 | * | |
1119 | * FUNCTION: acpi_os_release_object | |
1120 | * | |
1121 | * PARAMETERS: Cache - Handle to cache object | |
1122 | * Object - The object to be released | |
1123 | * | |
1124 | * RETURN: None | |
1125 | * | |
1126 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1127 | * the object is deleted. | |
1128 | * | |
1129 | ******************************************************************************/ | |
1130 | ||
4be44fcd | 1131 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1132 | { |
4be44fcd LB |
1133 | kmem_cache_free(cache, object); |
1134 | return (AE_OK); | |
73459f73 RM |
1135 | } |
1136 | ||
b229cf92 BM |
1137 | /****************************************************************************** |
1138 | * | |
1139 | * FUNCTION: acpi_os_validate_interface | |
1140 | * | |
1141 | * PARAMETERS: interface - Requested interface to be validated | |
1142 | * | |
1143 | * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise | |
1144 | * | |
1145 | * DESCRIPTION: Match an interface string to the interfaces supported by the | |
1146 | * host. Strings originate from an AML call to the _OSI method. | |
1147 | * | |
1148 | *****************************************************************************/ | |
1149 | ||
1150 | acpi_status | |
1151 | acpi_os_validate_interface (char *interface) | |
1152 | { | |
1153 | ||
1154 | return AE_SUPPORT; | |
1155 | } | |
1156 | ||
1157 | ||
1158 | /****************************************************************************** | |
1159 | * | |
1160 | * FUNCTION: acpi_os_validate_address | |
1161 | * | |
1162 | * PARAMETERS: space_id - ACPI space ID | |
1163 | * address - Physical address | |
1164 | * length - Address length | |
1165 | * | |
1166 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1167 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1168 | * | |
1169 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1170 | * the addresses accessed by AML operation regions. | |
1171 | * | |
1172 | *****************************************************************************/ | |
1173 | ||
1174 | acpi_status | |
1175 | acpi_os_validate_address ( | |
1176 | u8 space_id, | |
1177 | acpi_physical_address address, | |
1178 | acpi_size length) | |
1179 | { | |
1180 | ||
1181 | return AE_OK; | |
1182 | } | |
1183 | ||
1184 | ||
73459f73 | 1185 | #endif |