Commit | Line | Data |
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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; | |
88db5e14 | 74 | static struct workqueue_struct *kacpi_notify_wq; |
1da177e4 | 75 | |
ae00d812 LB |
76 | #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ |
77 | static char osi_additional_string[OSI_STRING_LENGTH_MAX]; | |
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 | 143 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
88db5e14 | 144 | kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify"); |
1da177e4 | 145 | BUG_ON(!kacpid_wq); |
88db5e14 | 146 | BUG_ON(!kacpi_notify_wq); |
1da177e4 LT |
147 | return AE_OK; |
148 | } | |
149 | ||
4be44fcd | 150 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
151 | { |
152 | if (acpi_irq_handler) { | |
153 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
154 | acpi_irq_handler); | |
155 | } | |
156 | ||
157 | destroy_workqueue(kacpid_wq); | |
88db5e14 | 158 | destroy_workqueue(kacpi_notify_wq); |
1da177e4 LT |
159 | |
160 | return AE_OK; | |
161 | } | |
162 | ||
4be44fcd | 163 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
164 | { |
165 | va_list args; | |
166 | va_start(args, fmt); | |
167 | acpi_os_vprintf(fmt, args); | |
168 | va_end(args); | |
169 | } | |
4be44fcd | 170 | |
1da177e4 LT |
171 | EXPORT_SYMBOL(acpi_os_printf); |
172 | ||
4be44fcd | 173 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
174 | { |
175 | static char buffer[512]; | |
4be44fcd | 176 | |
1da177e4 LT |
177 | vsprintf(buffer, fmt, args); |
178 | ||
179 | #ifdef ENABLE_DEBUGGER | |
180 | if (acpi_in_debugger) { | |
181 | kdb_printf("%s", buffer); | |
182 | } else { | |
183 | printk("%s", buffer); | |
184 | } | |
185 | #else | |
186 | printk("%s", buffer); | |
187 | #endif | |
188 | } | |
189 | ||
ad71860a | 190 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
191 | { |
192 | if (efi_enabled) { | |
b2c99e3c | 193 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 194 | return efi.acpi20; |
b2c99e3c | 195 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 196 | return efi.acpi; |
1da177e4 | 197 | else { |
4be44fcd LB |
198 | printk(KERN_ERR PREFIX |
199 | "System description tables not found\n"); | |
ad71860a | 200 | return 0; |
1da177e4 | 201 | } |
ad71860a AS |
202 | } else |
203 | return acpi_find_rsdp(); | |
1da177e4 LT |
204 | } |
205 | ||
ad71860a | 206 | void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
1da177e4 | 207 | { |
9f4fd61f BH |
208 | if (phys > ULONG_MAX) { |
209 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 210 | return NULL; |
1da177e4 | 211 | } |
ad71860a AS |
212 | if (acpi_gbl_permanent_mmap) |
213 | /* | |
214 | * ioremap checks to ensure this is in reserved space | |
215 | */ | |
216 | return ioremap((unsigned long)phys, size); | |
217 | else | |
218 | return __acpi_map_table((unsigned long)phys, size); | |
1da177e4 | 219 | } |
55a82ab3 | 220 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 221 | |
4be44fcd | 222 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
1da177e4 | 223 | { |
ad71860a AS |
224 | if (acpi_gbl_permanent_mmap) { |
225 | iounmap(virt); | |
226 | } | |
1da177e4 | 227 | } |
55a82ab3 | 228 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 LT |
229 | |
230 | #ifdef ACPI_FUTURE_USAGE | |
231 | acpi_status | |
4be44fcd | 232 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 233 | { |
4be44fcd | 234 | if (!phys || !virt) |
1da177e4 LT |
235 | return AE_BAD_PARAMETER; |
236 | ||
237 | *phys = virt_to_phys(virt); | |
238 | ||
239 | return AE_OK; | |
240 | } | |
241 | #endif | |
242 | ||
243 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
244 | ||
245 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
246 | ||
247 | acpi_status | |
4be44fcd LB |
248 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
249 | acpi_string * new_val) | |
1da177e4 LT |
250 | { |
251 | if (!init_val || !new_val) | |
252 | return AE_BAD_PARAMETER; | |
253 | ||
254 | *new_val = NULL; | |
4be44fcd | 255 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 256 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 257 | acpi_os_name); |
1da177e4 LT |
258 | *new_val = acpi_os_name; |
259 | } | |
260 | ||
261 | return AE_OK; | |
262 | } | |
263 | ||
264 | acpi_status | |
4be44fcd LB |
265 | acpi_os_table_override(struct acpi_table_header * existing_table, |
266 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
267 | { |
268 | if (!existing_table || !new_table) | |
269 | return AE_BAD_PARAMETER; | |
270 | ||
271 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
272 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 273 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 LT |
274 | else |
275 | *new_table = NULL; | |
276 | #else | |
277 | *new_table = NULL; | |
278 | #endif | |
279 | return AE_OK; | |
280 | } | |
281 | ||
7d12e780 | 282 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 283 | { |
4be44fcd | 284 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
1da177e4 LT |
285 | } |
286 | ||
287 | acpi_status | |
4be44fcd LB |
288 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
289 | void *context) | |
1da177e4 LT |
290 | { |
291 | unsigned int irq; | |
292 | ||
293 | /* | |
294 | * Ignore the GSI from the core, and use the value in our copy of the | |
295 | * FADT. It may not be the same if an interrupt source override exists | |
296 | * for the SCI. | |
297 | */ | |
cee324b1 | 298 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
299 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
300 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
301 | gsi); | |
302 | return AE_OK; | |
303 | } | |
304 | ||
305 | acpi_irq_handler = handler; | |
306 | acpi_irq_context = context; | |
dace1453 | 307 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
308 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
309 | return AE_NOT_ACQUIRED; | |
310 | } | |
311 | acpi_irq_irq = irq; | |
312 | ||
313 | return AE_OK; | |
314 | } | |
315 | ||
4be44fcd | 316 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
317 | { |
318 | if (irq) { | |
319 | free_irq(irq, acpi_irq); | |
320 | acpi_irq_handler = NULL; | |
321 | acpi_irq_irq = 0; | |
322 | } | |
323 | ||
324 | return AE_OK; | |
325 | } | |
326 | ||
327 | /* | |
328 | * Running in interpreter thread context, safe to sleep | |
329 | */ | |
330 | ||
4be44fcd | 331 | void acpi_os_sleep(acpi_integer ms) |
1da177e4 | 332 | { |
01a527ec | 333 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 334 | } |
4be44fcd | 335 | |
1da177e4 LT |
336 | EXPORT_SYMBOL(acpi_os_sleep); |
337 | ||
4be44fcd | 338 | void acpi_os_stall(u32 us) |
1da177e4 LT |
339 | { |
340 | while (us) { | |
341 | u32 delay = 1000; | |
342 | ||
343 | if (delay > us) | |
344 | delay = us; | |
345 | udelay(delay); | |
346 | touch_nmi_watchdog(); | |
347 | us -= delay; | |
348 | } | |
349 | } | |
4be44fcd | 350 | |
1da177e4 LT |
351 | EXPORT_SYMBOL(acpi_os_stall); |
352 | ||
353 | /* | |
354 | * Support ACPI 3.0 AML Timer operand | |
355 | * Returns 64-bit free-running, monotonically increasing timer | |
356 | * with 100ns granularity | |
357 | */ | |
4be44fcd | 358 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
359 | { |
360 | static u64 t; | |
361 | ||
362 | #ifdef CONFIG_HPET | |
363 | /* TBD: use HPET if available */ | |
364 | #endif | |
365 | ||
366 | #ifdef CONFIG_X86_PM_TIMER | |
367 | /* TBD: default to PM timer if HPET was not available */ | |
368 | #endif | |
369 | if (!t) | |
370 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
371 | ||
372 | return ++t; | |
373 | } | |
374 | ||
4be44fcd | 375 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
376 | { |
377 | u32 dummy; | |
378 | ||
379 | if (!value) | |
380 | value = &dummy; | |
381 | ||
4be44fcd | 382 | switch (width) { |
1da177e4 | 383 | case 8: |
4be44fcd | 384 | *(u8 *) value = inb(port); |
1da177e4 LT |
385 | break; |
386 | case 16: | |
4be44fcd | 387 | *(u16 *) value = inw(port); |
1da177e4 LT |
388 | break; |
389 | case 32: | |
4be44fcd | 390 | *(u32 *) value = inl(port); |
1da177e4 LT |
391 | break; |
392 | default: | |
393 | BUG(); | |
394 | } | |
395 | ||
396 | return AE_OK; | |
397 | } | |
4be44fcd | 398 | |
1da177e4 LT |
399 | EXPORT_SYMBOL(acpi_os_read_port); |
400 | ||
4be44fcd | 401 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 402 | { |
4be44fcd | 403 | switch (width) { |
1da177e4 LT |
404 | case 8: |
405 | outb(value, port); | |
406 | break; | |
407 | case 16: | |
408 | outw(value, port); | |
409 | break; | |
410 | case 32: | |
411 | outl(value, port); | |
412 | break; | |
413 | default: | |
414 | BUG(); | |
415 | } | |
416 | ||
417 | return AE_OK; | |
418 | } | |
4be44fcd | 419 | |
1da177e4 LT |
420 | EXPORT_SYMBOL(acpi_os_write_port); |
421 | ||
422 | acpi_status | |
4be44fcd | 423 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 424 | { |
4be44fcd LB |
425 | u32 dummy; |
426 | void __iomem *virt_addr; | |
1da177e4 | 427 | |
9f4fd61f | 428 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
429 | if (!value) |
430 | value = &dummy; | |
431 | ||
432 | switch (width) { | |
433 | case 8: | |
4be44fcd | 434 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
435 | break; |
436 | case 16: | |
4be44fcd | 437 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
438 | break; |
439 | case 32: | |
4be44fcd | 440 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
441 | break; |
442 | default: | |
443 | BUG(); | |
444 | } | |
445 | ||
9f4fd61f | 446 | iounmap(virt_addr); |
1da177e4 LT |
447 | |
448 | return AE_OK; | |
449 | } | |
450 | ||
451 | acpi_status | |
4be44fcd | 452 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 453 | { |
4be44fcd | 454 | void __iomem *virt_addr; |
1da177e4 | 455 | |
9f4fd61f | 456 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
457 | |
458 | switch (width) { | |
459 | case 8: | |
460 | writeb(value, virt_addr); | |
461 | break; | |
462 | case 16: | |
463 | writew(value, virt_addr); | |
464 | break; | |
465 | case 32: | |
466 | writel(value, virt_addr); | |
467 | break; | |
468 | default: | |
469 | BUG(); | |
470 | } | |
471 | ||
9f4fd61f | 472 | iounmap(virt_addr); |
1da177e4 LT |
473 | |
474 | return AE_OK; | |
475 | } | |
476 | ||
1da177e4 | 477 | acpi_status |
4be44fcd LB |
478 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
479 | void *value, u32 width) | |
1da177e4 LT |
480 | { |
481 | int result, size; | |
482 | ||
483 | if (!value) | |
484 | return AE_BAD_PARAMETER; | |
485 | ||
486 | switch (width) { | |
487 | case 8: | |
488 | size = 1; | |
489 | break; | |
490 | case 16: | |
491 | size = 2; | |
492 | break; | |
493 | case 32: | |
494 | size = 4; | |
495 | break; | |
496 | default: | |
497 | return AE_ERROR; | |
498 | } | |
499 | ||
500 | BUG_ON(!raw_pci_ops); | |
501 | ||
502 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
503 | PCI_DEVFN(pci_id->device, pci_id->function), |
504 | reg, size, value); | |
1da177e4 LT |
505 | |
506 | return (result ? AE_ERROR : AE_OK); | |
507 | } | |
4be44fcd | 508 | |
1da177e4 LT |
509 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
510 | ||
511 | acpi_status | |
4be44fcd LB |
512 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
513 | acpi_integer value, u32 width) | |
1da177e4 LT |
514 | { |
515 | int result, size; | |
516 | ||
517 | switch (width) { | |
518 | case 8: | |
519 | size = 1; | |
520 | break; | |
521 | case 16: | |
522 | size = 2; | |
523 | break; | |
524 | case 32: | |
525 | size = 4; | |
526 | break; | |
527 | default: | |
528 | return AE_ERROR; | |
529 | } | |
530 | ||
531 | BUG_ON(!raw_pci_ops); | |
532 | ||
533 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
534 | PCI_DEVFN(pci_id->device, pci_id->function), |
535 | reg, size, value); | |
1da177e4 LT |
536 | |
537 | return (result ? AE_ERROR : AE_OK); | |
538 | } | |
539 | ||
540 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
541 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
542 | acpi_handle chandle, /* current node */ | |
543 | struct acpi_pci_id **id, | |
544 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 545 | { |
4be44fcd LB |
546 | acpi_handle handle; |
547 | struct acpi_pci_id *pci_id = *id; | |
548 | acpi_status status; | |
549 | unsigned long temp; | |
550 | acpi_object_type type; | |
551 | u8 tu8; | |
1da177e4 LT |
552 | |
553 | acpi_get_parent(chandle, &handle); | |
554 | if (handle != rhandle) { | |
4be44fcd LB |
555 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
556 | bus_number); | |
1da177e4 LT |
557 | |
558 | status = acpi_get_type(handle, &type); | |
4be44fcd | 559 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
560 | return; |
561 | ||
4be44fcd LB |
562 | status = |
563 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, | |
564 | &temp); | |
1da177e4 | 565 | if (ACPI_SUCCESS(status)) { |
4be44fcd LB |
566 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
567 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
568 | |
569 | if (*is_bridge) | |
570 | pci_id->bus = *bus_number; | |
571 | ||
572 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd LB |
573 | status = |
574 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, | |
575 | 8); | |
576 | if (ACPI_SUCCESS(status) | |
577 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { | |
578 | status = | |
579 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
580 | &tu8, 8); | |
1da177e4 LT |
581 | if (!ACPI_SUCCESS(status)) { |
582 | /* Certainly broken... FIX ME */ | |
583 | return; | |
584 | } | |
585 | *is_bridge = 1; | |
586 | pci_id->bus = tu8; | |
4be44fcd LB |
587 | status = |
588 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
589 | &tu8, 8); | |
1da177e4 LT |
590 | if (ACPI_SUCCESS(status)) { |
591 | *bus_number = tu8; | |
592 | } | |
593 | } else | |
594 | *is_bridge = 0; | |
595 | } | |
596 | } | |
597 | } | |
598 | ||
4be44fcd LB |
599 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
600 | acpi_handle chandle, /* current node */ | |
601 | struct acpi_pci_id **id) | |
1da177e4 LT |
602 | { |
603 | int is_bridge = 1; | |
604 | u8 bus_number = (*id)->bus; | |
605 | ||
606 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
607 | } | |
608 | ||
65f27f38 | 609 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
610 | { |
611 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
612 | if (!dpc) { | |
613 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); | |
614 | return; | |
615 | } | |
616 | ||
617 | dpc->function(dpc->context); | |
618 | kfree(dpc); | |
619 | ||
620 | /* Yield cpu to notify thread */ | |
621 | cond_resched(); | |
622 | ||
623 | return; | |
624 | } | |
625 | ||
626 | static void acpi_os_execute_notify(struct work_struct *work) | |
1da177e4 | 627 | { |
65f27f38 | 628 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
1da177e4 | 629 | |
1da177e4 | 630 | if (!dpc) { |
6468463a | 631 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); |
d550d98d | 632 | return; |
1da177e4 LT |
633 | } |
634 | ||
635 | dpc->function(dpc->context); | |
636 | ||
637 | kfree(dpc); | |
638 | ||
d550d98d | 639 | return; |
1da177e4 LT |
640 | } |
641 | ||
b8d35192 AS |
642 | /******************************************************************************* |
643 | * | |
644 | * FUNCTION: acpi_os_execute | |
645 | * | |
646 | * PARAMETERS: Type - Type of the callback | |
647 | * Function - Function to be executed | |
648 | * Context - Function parameters | |
649 | * | |
650 | * RETURN: Status | |
651 | * | |
652 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
653 | * immediately executes function on a separate thread. | |
654 | * | |
655 | ******************************************************************************/ | |
656 | ||
657 | acpi_status acpi_os_execute(acpi_execute_type type, | |
4be44fcd | 658 | acpi_osd_exec_callback function, void *context) |
1da177e4 | 659 | { |
4be44fcd LB |
660 | acpi_status status = AE_OK; |
661 | struct acpi_os_dpc *dpc; | |
72945b2b | 662 | |
72945b2b LB |
663 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
664 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
665 | function, context)); | |
1da177e4 LT |
666 | |
667 | if (!function) | |
88db5e14 | 668 | return AE_BAD_PARAMETER; |
72945b2b | 669 | |
1da177e4 LT |
670 | /* |
671 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 672 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
673 | * way that allows us to also free its memory inside the callee. |
674 | * Because we may want to schedule several tasks with different | |
675 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 676 | * having a static work_struct. |
1da177e4 | 677 | */ |
72945b2b | 678 | |
65f27f38 | 679 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 680 | if (!dpc) |
b976fe19 LT |
681 | return_ACPI_STATUS(AE_NO_MEMORY); |
682 | ||
1da177e4 LT |
683 | dpc->function = function; |
684 | dpc->context = context; | |
b976fe19 | 685 | |
88db5e14 AS |
686 | if (type == OSL_NOTIFY_HANDLER) { |
687 | INIT_WORK(&dpc->work, acpi_os_execute_notify); | |
688 | if (!queue_work(kacpi_notify_wq, &dpc->work)) { | |
689 | status = AE_ERROR; | |
690 | kfree(dpc); | |
691 | } | |
692 | } else { | |
693 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
694 | if (!queue_work(kacpid_wq, &dpc->work)) { | |
695 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
b976fe19 | 696 | "Call to queue_work() failed.\n")); |
88db5e14 AS |
697 | status = AE_ERROR; |
698 | kfree(dpc); | |
699 | } | |
1da177e4 | 700 | } |
b976fe19 | 701 | return_ACPI_STATUS(status); |
1da177e4 | 702 | } |
4be44fcd | 703 | |
b8d35192 | 704 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 705 | |
4be44fcd | 706 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
707 | { |
708 | flush_workqueue(kacpid_wq); | |
709 | } | |
4be44fcd | 710 | |
1da177e4 LT |
711 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
712 | ||
713 | /* | |
714 | * Allocate the memory for a spinlock and initialize it. | |
715 | */ | |
967440e3 | 716 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 717 | { |
967440e3 | 718 | spin_lock_init(*handle); |
1da177e4 | 719 | |
d550d98d | 720 | return AE_OK; |
1da177e4 LT |
721 | } |
722 | ||
1da177e4 LT |
723 | /* |
724 | * Deallocate the memory for a spinlock. | |
725 | */ | |
967440e3 | 726 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 727 | { |
d550d98d | 728 | return; |
1da177e4 LT |
729 | } |
730 | ||
1da177e4 | 731 | acpi_status |
4be44fcd | 732 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 733 | { |
4be44fcd | 734 | struct semaphore *sem = NULL; |
1da177e4 | 735 | |
1da177e4 LT |
736 | |
737 | sem = acpi_os_allocate(sizeof(struct semaphore)); | |
738 | if (!sem) | |
d550d98d | 739 | return AE_NO_MEMORY; |
1da177e4 LT |
740 | memset(sem, 0, sizeof(struct semaphore)); |
741 | ||
742 | sema_init(sem, initial_units); | |
743 | ||
4be44fcd | 744 | *handle = (acpi_handle *) sem; |
1da177e4 | 745 | |
4be44fcd LB |
746 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
747 | *handle, initial_units)); | |
1da177e4 | 748 | |
d550d98d | 749 | return AE_OK; |
1da177e4 | 750 | } |
1da177e4 | 751 | |
4be44fcd | 752 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
1da177e4 LT |
753 | |
754 | /* | |
755 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
756 | * 'delete_semaphore()' function -- may result in an invalid | |
757 | * pointer dereference for non-synchronized consumers. Should | |
758 | * we at least check for blocked threads and signal/cancel them? | |
759 | */ | |
760 | ||
4be44fcd | 761 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 762 | { |
4be44fcd | 763 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 764 | |
1da177e4 LT |
765 | |
766 | if (!sem) | |
d550d98d | 767 | return AE_BAD_PARAMETER; |
1da177e4 | 768 | |
4be44fcd | 769 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 770 | |
02438d87 | 771 | kfree(sem); |
4be44fcd | 772 | sem = NULL; |
1da177e4 | 773 | |
d550d98d | 774 | return AE_OK; |
1da177e4 | 775 | } |
1da177e4 | 776 | |
4be44fcd | 777 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
1da177e4 LT |
778 | |
779 | /* | |
780 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to | |
781 | * improvise. The process is to sleep for one scheduler quantum | |
782 | * until the semaphore becomes available. Downside is that this | |
783 | * may result in starvation for timeout-based waits when there's | |
784 | * lots of semaphore activity. | |
785 | * | |
786 | * TODO: Support for units > 1? | |
787 | */ | |
4be44fcd | 788 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 789 | { |
4be44fcd LB |
790 | acpi_status status = AE_OK; |
791 | struct semaphore *sem = (struct semaphore *)handle; | |
792 | int ret = 0; | |
1da177e4 | 793 | |
1da177e4 LT |
794 | |
795 | if (!sem || (units < 1)) | |
d550d98d | 796 | return AE_BAD_PARAMETER; |
1da177e4 LT |
797 | |
798 | if (units > 1) | |
d550d98d | 799 | return AE_SUPPORT; |
1da177e4 | 800 | |
4be44fcd LB |
801 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
802 | handle, units, timeout)); | |
1da177e4 | 803 | |
d68909f4 LB |
804 | /* |
805 | * This can be called during resume with interrupts off. | |
806 | * Like boot-time, we should be single threaded and will | |
807 | * always get the lock if we try -- timeout or not. | |
808 | * If this doesn't succeed, then we will oops courtesy of | |
809 | * might_sleep() in down(). | |
810 | */ | |
811 | if (!down_trylock(sem)) | |
812 | return AE_OK; | |
813 | ||
4be44fcd | 814 | switch (timeout) { |
1da177e4 LT |
815 | /* |
816 | * No Wait: | |
817 | * -------- | |
818 | * A zero timeout value indicates that we shouldn't wait - just | |
819 | * acquire the semaphore if available otherwise return AE_TIME | |
820 | * (a.k.a. 'would block'). | |
821 | */ | |
4be44fcd LB |
822 | case 0: |
823 | if (down_trylock(sem)) | |
1da177e4 LT |
824 | status = AE_TIME; |
825 | break; | |
826 | ||
827 | /* | |
828 | * Wait Indefinitely: | |
829 | * ------------------ | |
830 | */ | |
4be44fcd | 831 | case ACPI_WAIT_FOREVER: |
1da177e4 LT |
832 | down(sem); |
833 | break; | |
834 | ||
835 | /* | |
836 | * Wait w/ Timeout: | |
837 | * ---------------- | |
838 | */ | |
4be44fcd | 839 | default: |
1da177e4 LT |
840 | // TODO: A better timeout algorithm? |
841 | { | |
842 | int i = 0; | |
4be44fcd | 843 | static const int quantum_ms = 1000 / HZ; |
1da177e4 LT |
844 | |
845 | ret = down_trylock(sem); | |
dacd9b80 | 846 | for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) { |
01a527ec | 847 | schedule_timeout_interruptible(1); |
1da177e4 LT |
848 | ret = down_trylock(sem); |
849 | } | |
4be44fcd | 850 | |
1da177e4 LT |
851 | if (ret != 0) |
852 | status = AE_TIME; | |
853 | } | |
854 | break; | |
855 | } | |
856 | ||
857 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 858 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 859 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
860 | handle, units, timeout, |
861 | acpi_format_exception(status))); | |
862 | } else { | |
863 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 864 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 865 | units, timeout)); |
1da177e4 LT |
866 | } |
867 | ||
d550d98d | 868 | return status; |
1da177e4 | 869 | } |
1da177e4 | 870 | |
4be44fcd | 871 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
1da177e4 LT |
872 | |
873 | /* | |
874 | * TODO: Support for units > 1? | |
875 | */ | |
4be44fcd | 876 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 877 | { |
4be44fcd | 878 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 879 | |
1da177e4 LT |
880 | |
881 | if (!sem || (units < 1)) | |
d550d98d | 882 | return AE_BAD_PARAMETER; |
1da177e4 LT |
883 | |
884 | if (units > 1) | |
d550d98d | 885 | return AE_SUPPORT; |
1da177e4 | 886 | |
4be44fcd LB |
887 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
888 | units)); | |
1da177e4 LT |
889 | |
890 | up(sem); | |
891 | ||
d550d98d | 892 | return AE_OK; |
1da177e4 | 893 | } |
4be44fcd | 894 | |
1da177e4 LT |
895 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
896 | ||
897 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 898 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
899 | { |
900 | ||
901 | #ifdef ENABLE_DEBUGGER | |
902 | if (acpi_in_debugger) { | |
903 | u32 chars; | |
904 | ||
905 | kdb_read(buffer, sizeof(line_buf)); | |
906 | ||
907 | /* remove the CR kdb includes */ | |
908 | chars = strlen(buffer) - 1; | |
909 | buffer[chars] = '\0'; | |
910 | } | |
911 | #endif | |
912 | ||
913 | return 0; | |
914 | } | |
4be44fcd | 915 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 916 | |
4be44fcd | 917 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 918 | { |
4be44fcd | 919 | switch (function) { |
1da177e4 LT |
920 | case ACPI_SIGNAL_FATAL: |
921 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
922 | break; | |
923 | case ACPI_SIGNAL_BREAKPOINT: | |
924 | /* | |
925 | * AML Breakpoint | |
926 | * ACPI spec. says to treat it as a NOP unless | |
927 | * you are debugging. So if/when we integrate | |
928 | * AML debugger into the kernel debugger its | |
929 | * hook will go here. But until then it is | |
930 | * not useful to print anything on breakpoints. | |
931 | */ | |
932 | break; | |
933 | default: | |
934 | break; | |
935 | } | |
936 | ||
937 | return AE_OK; | |
938 | } | |
4be44fcd | 939 | |
1da177e4 LT |
940 | EXPORT_SYMBOL(acpi_os_signal); |
941 | ||
4be44fcd | 942 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
943 | { |
944 | char *p = acpi_os_name; | |
4be44fcd | 945 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
946 | |
947 | if (!str || !*str) | |
948 | return 0; | |
949 | ||
950 | for (; count-- && str && *str; str++) { | |
951 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
952 | *p++ = *str; | |
953 | else if (*str == '\'' || *str == '"') | |
954 | continue; | |
955 | else | |
956 | break; | |
957 | } | |
958 | *p = 0; | |
959 | ||
960 | return 1; | |
4be44fcd | 961 | |
1da177e4 LT |
962 | } |
963 | ||
964 | __setup("acpi_os_name=", acpi_os_name_setup); | |
965 | ||
966 | /* | |
ae00d812 LB |
967 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
968 | * | |
1da177e4 | 969 | * empty string disables _OSI |
ae00d812 LB |
970 | * string starting with '!' disables that string |
971 | * otherwise string is added to list, augmenting built-in strings | |
1da177e4 | 972 | */ |
4be44fcd | 973 | static int __init acpi_osi_setup(char *str) |
1da177e4 LT |
974 | { |
975 | if (str == NULL || *str == '\0') { | |
976 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
977 | acpi_gbl_create_osi_method = FALSE; | |
ae00d812 LB |
978 | } else if (*str == '!') { |
979 | if (acpi_osi_invalidate(++str) == AE_OK) | |
980 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); | |
981 | } else if (*osi_additional_string == '\0') { | |
982 | strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX); | |
983 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); | |
1da177e4 LT |
984 | } |
985 | ||
986 | return 1; | |
987 | } | |
988 | ||
989 | __setup("acpi_osi=", acpi_osi_setup); | |
990 | ||
991 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 992 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
993 | { |
994 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
995 | ||
996 | acpi_gbl_all_methods_serialized = TRUE; | |
997 | ||
998 | return 1; | |
999 | } | |
1000 | ||
1001 | __setup("acpi_serialize", acpi_serialize_setup); | |
1002 | ||
1003 | /* | |
1004 | * Wake and Run-Time GPES are expected to be separate. | |
1005 | * We disable wake-GPEs at run-time to prevent spurious | |
1006 | * interrupts. | |
1007 | * | |
1008 | * However, if a system exists that shares Wake and | |
1009 | * Run-time events on the same GPE this flag is available | |
1010 | * to tell Linux to keep the wake-time GPEs enabled at run-time. | |
1011 | */ | |
4be44fcd | 1012 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
1da177e4 LT |
1013 | { |
1014 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); | |
1015 | ||
1016 | acpi_gbl_leave_wake_gpes_disabled = FALSE; | |
1017 | ||
1018 | return 1; | |
1019 | } | |
1020 | ||
1021 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); | |
1022 | ||
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 | { | |
ae00d812 LB |
1153 | if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX)) |
1154 | return AE_OK; | |
1155 | return AE_SUPPORT; | |
b229cf92 BM |
1156 | } |
1157 | ||
b229cf92 BM |
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 |