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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> | |
f507654d | 36 | #include <linux/dmi.h> |
1da177e4 LT |
37 | #include <linux/workqueue.h> |
38 | #include <linux/nmi.h> | |
ad71860a | 39 | #include <linux/acpi.h> |
1da177e4 LT |
40 | #include <acpi/acpi.h> |
41 | #include <asm/io.h> | |
42 | #include <acpi/acpi_bus.h> | |
43 | #include <acpi/processor.h> | |
44 | #include <asm/uaccess.h> | |
45 | ||
46 | #include <linux/efi.h> | |
47 | ||
1da177e4 | 48 | #define _COMPONENT ACPI_OS_SERVICES |
f52fd66d | 49 | ACPI_MODULE_NAME("osl"); |
1da177e4 | 50 | #define PREFIX "ACPI: " |
4be44fcd LB |
51 | struct acpi_os_dpc { |
52 | acpi_osd_exec_callback function; | |
53 | void *context; | |
65f27f38 | 54 | struct work_struct work; |
1da177e4 LT |
55 | }; |
56 | ||
57 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
58 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE | |
59 | #endif | |
60 | ||
61 | #ifdef ENABLE_DEBUGGER | |
62 | #include <linux/kdb.h> | |
63 | ||
64 | /* stuff for debugger support */ | |
65 | int acpi_in_debugger; | |
66 | EXPORT_SYMBOL(acpi_in_debugger); | |
67 | ||
68 | extern char line_buf[80]; | |
4be44fcd | 69 | #endif /*ENABLE_DEBUGGER */ |
1da177e4 LT |
70 | |
71 | static unsigned int acpi_irq_irq; | |
72 | static acpi_osd_handler acpi_irq_handler; | |
73 | static void *acpi_irq_context; | |
74 | static struct workqueue_struct *kacpid_wq; | |
88db5e14 | 75 | static struct workqueue_struct *kacpi_notify_wq; |
1da177e4 | 76 | |
ae00d812 LB |
77 | #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ |
78 | static char osi_additional_string[OSI_STRING_LENGTH_MAX]; | |
79 | ||
3312111d | 80 | static int osi_linux; /* disable _OSI(Linux) by default */ |
f507654d | 81 | |
9a47cdb1 BH |
82 | static void __init acpi_request_region (struct acpi_generic_address *addr, |
83 | unsigned int length, char *desc) | |
84 | { | |
85 | struct resource *res; | |
86 | ||
87 | if (!addr->address || !length) | |
88 | return; | |
89 | ||
eee3c859 | 90 | if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
9a47cdb1 | 91 | res = request_region(addr->address, length, desc); |
eee3c859 | 92 | else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
9a47cdb1 BH |
93 | res = request_mem_region(addr->address, length, desc); |
94 | } | |
95 | ||
96 | static int __init acpi_reserve_resources(void) | |
97 | { | |
eee3c859 | 98 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
99 | "ACPI PM1a_EVT_BLK"); |
100 | ||
eee3c859 | 101 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
102 | "ACPI PM1b_EVT_BLK"); |
103 | ||
eee3c859 | 104 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
105 | "ACPI PM1a_CNT_BLK"); |
106 | ||
eee3c859 | 107 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
108 | "ACPI PM1b_CNT_BLK"); |
109 | ||
eee3c859 LB |
110 | if (acpi_gbl_FADT.pm_timer_length == 4) |
111 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 112 | |
eee3c859 | 113 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
114 | "ACPI PM2_CNT_BLK"); |
115 | ||
116 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
117 | ||
eee3c859 LB |
118 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
119 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
120 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 121 | |
eee3c859 LB |
122 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
123 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
124 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
125 | |
126 | return 0; | |
127 | } | |
128 | device_initcall(acpi_reserve_resources); | |
129 | ||
dd272b57 | 130 | acpi_status __init acpi_os_initialize(void) |
1da177e4 LT |
131 | { |
132 | return AE_OK; | |
133 | } | |
134 | ||
4be44fcd | 135 | acpi_status acpi_os_initialize1(void) |
1da177e4 LT |
136 | { |
137 | /* | |
138 | * Initialize PCI configuration space access, as we'll need to access | |
139 | * it while walking the namespace (bus 0 and root bridges w/ _BBNs). | |
140 | */ | |
1da177e4 | 141 | if (!raw_pci_ops) { |
4be44fcd LB |
142 | printk(KERN_ERR PREFIX |
143 | "Access to PCI configuration space unavailable\n"); | |
1da177e4 LT |
144 | return AE_NULL_ENTRY; |
145 | } | |
1da177e4 | 146 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
88db5e14 | 147 | kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify"); |
1da177e4 | 148 | BUG_ON(!kacpid_wq); |
88db5e14 | 149 | BUG_ON(!kacpi_notify_wq); |
1da177e4 LT |
150 | return AE_OK; |
151 | } | |
152 | ||
4be44fcd | 153 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
154 | { |
155 | if (acpi_irq_handler) { | |
156 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
157 | acpi_irq_handler); | |
158 | } | |
159 | ||
160 | destroy_workqueue(kacpid_wq); | |
88db5e14 | 161 | destroy_workqueue(kacpi_notify_wq); |
1da177e4 LT |
162 | |
163 | return AE_OK; | |
164 | } | |
165 | ||
4be44fcd | 166 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
167 | { |
168 | va_list args; | |
169 | va_start(args, fmt); | |
170 | acpi_os_vprintf(fmt, args); | |
171 | va_end(args); | |
172 | } | |
4be44fcd | 173 | |
1da177e4 LT |
174 | EXPORT_SYMBOL(acpi_os_printf); |
175 | ||
4be44fcd | 176 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
177 | { |
178 | static char buffer[512]; | |
4be44fcd | 179 | |
1da177e4 LT |
180 | vsprintf(buffer, fmt, args); |
181 | ||
182 | #ifdef ENABLE_DEBUGGER | |
183 | if (acpi_in_debugger) { | |
184 | kdb_printf("%s", buffer); | |
185 | } else { | |
186 | printk("%s", buffer); | |
187 | } | |
188 | #else | |
189 | printk("%s", buffer); | |
190 | #endif | |
191 | } | |
192 | ||
ad71860a | 193 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
194 | { |
195 | if (efi_enabled) { | |
b2c99e3c | 196 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 197 | return efi.acpi20; |
b2c99e3c | 198 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 199 | return efi.acpi; |
1da177e4 | 200 | else { |
4be44fcd LB |
201 | printk(KERN_ERR PREFIX |
202 | "System description tables not found\n"); | |
ad71860a | 203 | return 0; |
1da177e4 | 204 | } |
ad71860a AS |
205 | } else |
206 | return acpi_find_rsdp(); | |
1da177e4 LT |
207 | } |
208 | ||
ad71860a | 209 | void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
1da177e4 | 210 | { |
9f4fd61f BH |
211 | if (phys > ULONG_MAX) { |
212 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 213 | return NULL; |
1da177e4 | 214 | } |
ad71860a AS |
215 | if (acpi_gbl_permanent_mmap) |
216 | /* | |
217 | * ioremap checks to ensure this is in reserved space | |
218 | */ | |
219 | return ioremap((unsigned long)phys, size); | |
220 | else | |
221 | return __acpi_map_table((unsigned long)phys, size); | |
1da177e4 | 222 | } |
55a82ab3 | 223 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 224 | |
4be44fcd | 225 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
1da177e4 | 226 | { |
ad71860a AS |
227 | if (acpi_gbl_permanent_mmap) { |
228 | iounmap(virt); | |
229 | } | |
1da177e4 | 230 | } |
55a82ab3 | 231 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 LT |
232 | |
233 | #ifdef ACPI_FUTURE_USAGE | |
234 | acpi_status | |
4be44fcd | 235 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 236 | { |
4be44fcd | 237 | if (!phys || !virt) |
1da177e4 LT |
238 | return AE_BAD_PARAMETER; |
239 | ||
240 | *phys = virt_to_phys(virt); | |
241 | ||
242 | return AE_OK; | |
243 | } | |
244 | #endif | |
245 | ||
246 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
247 | ||
248 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
249 | ||
250 | acpi_status | |
4be44fcd LB |
251 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
252 | acpi_string * new_val) | |
1da177e4 LT |
253 | { |
254 | if (!init_val || !new_val) | |
255 | return AE_BAD_PARAMETER; | |
256 | ||
257 | *new_val = NULL; | |
4be44fcd | 258 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 259 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 260 | acpi_os_name); |
1da177e4 LT |
261 | *new_val = acpi_os_name; |
262 | } | |
263 | ||
264 | return AE_OK; | |
265 | } | |
266 | ||
267 | acpi_status | |
4be44fcd LB |
268 | acpi_os_table_override(struct acpi_table_header * existing_table, |
269 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
270 | { |
271 | if (!existing_table || !new_table) | |
272 | return AE_BAD_PARAMETER; | |
273 | ||
274 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
275 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 276 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 LT |
277 | else |
278 | *new_table = NULL; | |
279 | #else | |
280 | *new_table = NULL; | |
281 | #endif | |
282 | return AE_OK; | |
283 | } | |
284 | ||
7d12e780 | 285 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 286 | { |
4be44fcd | 287 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
1da177e4 LT |
288 | } |
289 | ||
290 | acpi_status | |
4be44fcd LB |
291 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
292 | void *context) | |
1da177e4 LT |
293 | { |
294 | unsigned int irq; | |
295 | ||
296 | /* | |
297 | * Ignore the GSI from the core, and use the value in our copy of the | |
298 | * FADT. It may not be the same if an interrupt source override exists | |
299 | * for the SCI. | |
300 | */ | |
cee324b1 | 301 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
302 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
303 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
304 | gsi); | |
305 | return AE_OK; | |
306 | } | |
307 | ||
308 | acpi_irq_handler = handler; | |
309 | acpi_irq_context = context; | |
dace1453 | 310 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
311 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
312 | return AE_NOT_ACQUIRED; | |
313 | } | |
314 | acpi_irq_irq = irq; | |
315 | ||
316 | return AE_OK; | |
317 | } | |
318 | ||
4be44fcd | 319 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
320 | { |
321 | if (irq) { | |
322 | free_irq(irq, acpi_irq); | |
323 | acpi_irq_handler = NULL; | |
324 | acpi_irq_irq = 0; | |
325 | } | |
326 | ||
327 | return AE_OK; | |
328 | } | |
329 | ||
330 | /* | |
331 | * Running in interpreter thread context, safe to sleep | |
332 | */ | |
333 | ||
4be44fcd | 334 | void acpi_os_sleep(acpi_integer ms) |
1da177e4 | 335 | { |
01a527ec | 336 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 337 | } |
4be44fcd | 338 | |
1da177e4 LT |
339 | EXPORT_SYMBOL(acpi_os_sleep); |
340 | ||
4be44fcd | 341 | void acpi_os_stall(u32 us) |
1da177e4 LT |
342 | { |
343 | while (us) { | |
344 | u32 delay = 1000; | |
345 | ||
346 | if (delay > us) | |
347 | delay = us; | |
348 | udelay(delay); | |
349 | touch_nmi_watchdog(); | |
350 | us -= delay; | |
351 | } | |
352 | } | |
4be44fcd | 353 | |
1da177e4 LT |
354 | EXPORT_SYMBOL(acpi_os_stall); |
355 | ||
356 | /* | |
357 | * Support ACPI 3.0 AML Timer operand | |
358 | * Returns 64-bit free-running, monotonically increasing timer | |
359 | * with 100ns granularity | |
360 | */ | |
4be44fcd | 361 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
362 | { |
363 | static u64 t; | |
364 | ||
365 | #ifdef CONFIG_HPET | |
366 | /* TBD: use HPET if available */ | |
367 | #endif | |
368 | ||
369 | #ifdef CONFIG_X86_PM_TIMER | |
370 | /* TBD: default to PM timer if HPET was not available */ | |
371 | #endif | |
372 | if (!t) | |
373 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
374 | ||
375 | return ++t; | |
376 | } | |
377 | ||
4be44fcd | 378 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
379 | { |
380 | u32 dummy; | |
381 | ||
382 | if (!value) | |
383 | value = &dummy; | |
384 | ||
49fbabf5 ZY |
385 | *value = 0; |
386 | if (width <= 8) { | |
4be44fcd | 387 | *(u8 *) value = inb(port); |
49fbabf5 | 388 | } else if (width <= 16) { |
4be44fcd | 389 | *(u16 *) value = inw(port); |
49fbabf5 | 390 | } else if (width <= 32) { |
4be44fcd | 391 | *(u32 *) value = inl(port); |
49fbabf5 | 392 | } else { |
1da177e4 LT |
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 | { |
49fbabf5 | 403 | if (width <= 8) { |
1da177e4 | 404 | outb(value, port); |
49fbabf5 | 405 | } else if (width <= 16) { |
1da177e4 | 406 | outw(value, port); |
49fbabf5 | 407 | } else if (width <= 32) { |
1da177e4 | 408 | outl(value, port); |
49fbabf5 | 409 | } else { |
1da177e4 LT |
410 | BUG(); |
411 | } | |
412 | ||
413 | return AE_OK; | |
414 | } | |
4be44fcd | 415 | |
1da177e4 LT |
416 | EXPORT_SYMBOL(acpi_os_write_port); |
417 | ||
418 | acpi_status | |
4be44fcd | 419 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 420 | { |
4be44fcd LB |
421 | u32 dummy; |
422 | void __iomem *virt_addr; | |
1da177e4 | 423 | |
9f4fd61f | 424 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
425 | if (!value) |
426 | value = &dummy; | |
427 | ||
428 | switch (width) { | |
429 | case 8: | |
4be44fcd | 430 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
431 | break; |
432 | case 16: | |
4be44fcd | 433 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
434 | break; |
435 | case 32: | |
4be44fcd | 436 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
437 | break; |
438 | default: | |
439 | BUG(); | |
440 | } | |
441 | ||
9f4fd61f | 442 | iounmap(virt_addr); |
1da177e4 LT |
443 | |
444 | return AE_OK; | |
445 | } | |
446 | ||
447 | acpi_status | |
4be44fcd | 448 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 449 | { |
4be44fcd | 450 | void __iomem *virt_addr; |
1da177e4 | 451 | |
9f4fd61f | 452 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
453 | |
454 | switch (width) { | |
455 | case 8: | |
456 | writeb(value, virt_addr); | |
457 | break; | |
458 | case 16: | |
459 | writew(value, virt_addr); | |
460 | break; | |
461 | case 32: | |
462 | writel(value, virt_addr); | |
463 | break; | |
464 | default: | |
465 | BUG(); | |
466 | } | |
467 | ||
9f4fd61f | 468 | iounmap(virt_addr); |
1da177e4 LT |
469 | |
470 | return AE_OK; | |
471 | } | |
472 | ||
1da177e4 | 473 | acpi_status |
4be44fcd LB |
474 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
475 | void *value, u32 width) | |
1da177e4 LT |
476 | { |
477 | int result, size; | |
478 | ||
479 | if (!value) | |
480 | return AE_BAD_PARAMETER; | |
481 | ||
482 | switch (width) { | |
483 | case 8: | |
484 | size = 1; | |
485 | break; | |
486 | case 16: | |
487 | size = 2; | |
488 | break; | |
489 | case 32: | |
490 | size = 4; | |
491 | break; | |
492 | default: | |
493 | return AE_ERROR; | |
494 | } | |
495 | ||
496 | BUG_ON(!raw_pci_ops); | |
497 | ||
498 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
499 | PCI_DEVFN(pci_id->device, pci_id->function), |
500 | reg, size, value); | |
1da177e4 LT |
501 | |
502 | return (result ? AE_ERROR : AE_OK); | |
503 | } | |
4be44fcd | 504 | |
1da177e4 LT |
505 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
506 | ||
507 | acpi_status | |
4be44fcd LB |
508 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
509 | acpi_integer value, u32 width) | |
1da177e4 LT |
510 | { |
511 | int result, size; | |
512 | ||
513 | switch (width) { | |
514 | case 8: | |
515 | size = 1; | |
516 | break; | |
517 | case 16: | |
518 | size = 2; | |
519 | break; | |
520 | case 32: | |
521 | size = 4; | |
522 | break; | |
523 | default: | |
524 | return AE_ERROR; | |
525 | } | |
526 | ||
527 | BUG_ON(!raw_pci_ops); | |
528 | ||
529 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
530 | PCI_DEVFN(pci_id->device, pci_id->function), |
531 | reg, size, value); | |
1da177e4 LT |
532 | |
533 | return (result ? AE_ERROR : AE_OK); | |
534 | } | |
535 | ||
536 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
537 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
538 | acpi_handle chandle, /* current node */ | |
539 | struct acpi_pci_id **id, | |
540 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 541 | { |
4be44fcd LB |
542 | acpi_handle handle; |
543 | struct acpi_pci_id *pci_id = *id; | |
544 | acpi_status status; | |
545 | unsigned long temp; | |
546 | acpi_object_type type; | |
547 | u8 tu8; | |
1da177e4 LT |
548 | |
549 | acpi_get_parent(chandle, &handle); | |
550 | if (handle != rhandle) { | |
4be44fcd LB |
551 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
552 | bus_number); | |
1da177e4 LT |
553 | |
554 | status = acpi_get_type(handle, &type); | |
4be44fcd | 555 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
556 | return; |
557 | ||
4be44fcd LB |
558 | status = |
559 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, | |
560 | &temp); | |
1da177e4 | 561 | if (ACPI_SUCCESS(status)) { |
4be44fcd LB |
562 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
563 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
564 | |
565 | if (*is_bridge) | |
566 | pci_id->bus = *bus_number; | |
567 | ||
568 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd LB |
569 | status = |
570 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, | |
571 | 8); | |
572 | if (ACPI_SUCCESS(status) | |
573 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { | |
574 | status = | |
575 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
576 | &tu8, 8); | |
1da177e4 LT |
577 | if (!ACPI_SUCCESS(status)) { |
578 | /* Certainly broken... FIX ME */ | |
579 | return; | |
580 | } | |
581 | *is_bridge = 1; | |
582 | pci_id->bus = tu8; | |
4be44fcd LB |
583 | status = |
584 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
585 | &tu8, 8); | |
1da177e4 LT |
586 | if (ACPI_SUCCESS(status)) { |
587 | *bus_number = tu8; | |
588 | } | |
589 | } else | |
590 | *is_bridge = 0; | |
591 | } | |
592 | } | |
593 | } | |
594 | ||
4be44fcd LB |
595 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
596 | acpi_handle chandle, /* current node */ | |
597 | struct acpi_pci_id **id) | |
1da177e4 LT |
598 | { |
599 | int is_bridge = 1; | |
600 | u8 bus_number = (*id)->bus; | |
601 | ||
602 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
603 | } | |
604 | ||
65f27f38 | 605 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
606 | { |
607 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
608 | if (!dpc) { | |
609 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); | |
610 | return; | |
611 | } | |
612 | ||
613 | dpc->function(dpc->context); | |
614 | kfree(dpc); | |
615 | ||
616 | /* Yield cpu to notify thread */ | |
617 | cond_resched(); | |
618 | ||
619 | return; | |
620 | } | |
621 | ||
622 | static void acpi_os_execute_notify(struct work_struct *work) | |
1da177e4 | 623 | { |
65f27f38 | 624 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
1da177e4 | 625 | |
1da177e4 | 626 | if (!dpc) { |
6468463a | 627 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); |
d550d98d | 628 | return; |
1da177e4 LT |
629 | } |
630 | ||
631 | dpc->function(dpc->context); | |
632 | ||
633 | kfree(dpc); | |
634 | ||
d550d98d | 635 | return; |
1da177e4 LT |
636 | } |
637 | ||
b8d35192 AS |
638 | /******************************************************************************* |
639 | * | |
640 | * FUNCTION: acpi_os_execute | |
641 | * | |
642 | * PARAMETERS: Type - Type of the callback | |
643 | * Function - Function to be executed | |
644 | * Context - Function parameters | |
645 | * | |
646 | * RETURN: Status | |
647 | * | |
648 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
649 | * immediately executes function on a separate thread. | |
650 | * | |
651 | ******************************************************************************/ | |
652 | ||
653 | acpi_status acpi_os_execute(acpi_execute_type type, | |
4be44fcd | 654 | acpi_osd_exec_callback function, void *context) |
1da177e4 | 655 | { |
4be44fcd LB |
656 | acpi_status status = AE_OK; |
657 | struct acpi_os_dpc *dpc; | |
72945b2b | 658 | |
72945b2b LB |
659 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
660 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
661 | function, context)); | |
1da177e4 LT |
662 | |
663 | if (!function) | |
88db5e14 | 664 | return AE_BAD_PARAMETER; |
72945b2b | 665 | |
1da177e4 LT |
666 | /* |
667 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 668 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
669 | * way that allows us to also free its memory inside the callee. |
670 | * Because we may want to schedule several tasks with different | |
671 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 672 | * having a static work_struct. |
1da177e4 | 673 | */ |
72945b2b | 674 | |
65f27f38 | 675 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 676 | if (!dpc) |
b976fe19 LT |
677 | return_ACPI_STATUS(AE_NO_MEMORY); |
678 | ||
1da177e4 LT |
679 | dpc->function = function; |
680 | dpc->context = context; | |
b976fe19 | 681 | |
88db5e14 AS |
682 | if (type == OSL_NOTIFY_HANDLER) { |
683 | INIT_WORK(&dpc->work, acpi_os_execute_notify); | |
684 | if (!queue_work(kacpi_notify_wq, &dpc->work)) { | |
685 | status = AE_ERROR; | |
686 | kfree(dpc); | |
687 | } | |
688 | } else { | |
689 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
690 | if (!queue_work(kacpid_wq, &dpc->work)) { | |
691 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
b976fe19 | 692 | "Call to queue_work() failed.\n")); |
88db5e14 AS |
693 | status = AE_ERROR; |
694 | kfree(dpc); | |
695 | } | |
1da177e4 | 696 | } |
b976fe19 | 697 | return_ACPI_STATUS(status); |
1da177e4 | 698 | } |
4be44fcd | 699 | |
b8d35192 | 700 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 701 | |
4be44fcd | 702 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
703 | { |
704 | flush_workqueue(kacpid_wq); | |
705 | } | |
4be44fcd | 706 | |
1da177e4 LT |
707 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
708 | ||
709 | /* | |
710 | * Allocate the memory for a spinlock and initialize it. | |
711 | */ | |
967440e3 | 712 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 713 | { |
967440e3 | 714 | spin_lock_init(*handle); |
1da177e4 | 715 | |
d550d98d | 716 | return AE_OK; |
1da177e4 LT |
717 | } |
718 | ||
1da177e4 LT |
719 | /* |
720 | * Deallocate the memory for a spinlock. | |
721 | */ | |
967440e3 | 722 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 723 | { |
d550d98d | 724 | return; |
1da177e4 LT |
725 | } |
726 | ||
1da177e4 | 727 | acpi_status |
4be44fcd | 728 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 729 | { |
4be44fcd | 730 | struct semaphore *sem = NULL; |
1da177e4 | 731 | |
1da177e4 LT |
732 | |
733 | sem = acpi_os_allocate(sizeof(struct semaphore)); | |
734 | if (!sem) | |
d550d98d | 735 | return AE_NO_MEMORY; |
1da177e4 LT |
736 | memset(sem, 0, sizeof(struct semaphore)); |
737 | ||
738 | sema_init(sem, initial_units); | |
739 | ||
4be44fcd | 740 | *handle = (acpi_handle *) sem; |
1da177e4 | 741 | |
4be44fcd LB |
742 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
743 | *handle, initial_units)); | |
1da177e4 | 744 | |
d550d98d | 745 | return AE_OK; |
1da177e4 | 746 | } |
1da177e4 | 747 | |
4be44fcd | 748 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
1da177e4 LT |
749 | |
750 | /* | |
751 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
752 | * 'delete_semaphore()' function -- may result in an invalid | |
753 | * pointer dereference for non-synchronized consumers. Should | |
754 | * we at least check for blocked threads and signal/cancel them? | |
755 | */ | |
756 | ||
4be44fcd | 757 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 758 | { |
4be44fcd | 759 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 760 | |
1da177e4 LT |
761 | |
762 | if (!sem) | |
d550d98d | 763 | return AE_BAD_PARAMETER; |
1da177e4 | 764 | |
4be44fcd | 765 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 766 | |
02438d87 | 767 | kfree(sem); |
4be44fcd | 768 | sem = NULL; |
1da177e4 | 769 | |
d550d98d | 770 | return AE_OK; |
1da177e4 | 771 | } |
1da177e4 | 772 | |
4be44fcd | 773 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
1da177e4 LT |
774 | |
775 | /* | |
776 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to | |
777 | * improvise. The process is to sleep for one scheduler quantum | |
778 | * until the semaphore becomes available. Downside is that this | |
779 | * may result in starvation for timeout-based waits when there's | |
780 | * lots of semaphore activity. | |
781 | * | |
782 | * TODO: Support for units > 1? | |
783 | */ | |
4be44fcd | 784 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 785 | { |
4be44fcd LB |
786 | acpi_status status = AE_OK; |
787 | struct semaphore *sem = (struct semaphore *)handle; | |
788 | int ret = 0; | |
1da177e4 | 789 | |
1da177e4 LT |
790 | |
791 | if (!sem || (units < 1)) | |
d550d98d | 792 | return AE_BAD_PARAMETER; |
1da177e4 LT |
793 | |
794 | if (units > 1) | |
d550d98d | 795 | return AE_SUPPORT; |
1da177e4 | 796 | |
4be44fcd LB |
797 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
798 | handle, units, timeout)); | |
1da177e4 | 799 | |
d68909f4 LB |
800 | /* |
801 | * This can be called during resume with interrupts off. | |
802 | * Like boot-time, we should be single threaded and will | |
803 | * always get the lock if we try -- timeout or not. | |
804 | * If this doesn't succeed, then we will oops courtesy of | |
805 | * might_sleep() in down(). | |
806 | */ | |
807 | if (!down_trylock(sem)) | |
808 | return AE_OK; | |
809 | ||
4be44fcd | 810 | switch (timeout) { |
1da177e4 LT |
811 | /* |
812 | * No Wait: | |
813 | * -------- | |
814 | * A zero timeout value indicates that we shouldn't wait - just | |
815 | * acquire the semaphore if available otherwise return AE_TIME | |
816 | * (a.k.a. 'would block'). | |
817 | */ | |
4be44fcd LB |
818 | case 0: |
819 | if (down_trylock(sem)) | |
1da177e4 LT |
820 | status = AE_TIME; |
821 | break; | |
822 | ||
823 | /* | |
824 | * Wait Indefinitely: | |
825 | * ------------------ | |
826 | */ | |
4be44fcd | 827 | case ACPI_WAIT_FOREVER: |
1da177e4 LT |
828 | down(sem); |
829 | break; | |
830 | ||
831 | /* | |
832 | * Wait w/ Timeout: | |
833 | * ---------------- | |
834 | */ | |
4be44fcd | 835 | default: |
1da177e4 LT |
836 | // TODO: A better timeout algorithm? |
837 | { | |
838 | int i = 0; | |
4be44fcd | 839 | static const int quantum_ms = 1000 / HZ; |
1da177e4 LT |
840 | |
841 | ret = down_trylock(sem); | |
dacd9b80 | 842 | for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) { |
01a527ec | 843 | schedule_timeout_interruptible(1); |
1da177e4 LT |
844 | ret = down_trylock(sem); |
845 | } | |
4be44fcd | 846 | |
1da177e4 LT |
847 | if (ret != 0) |
848 | status = AE_TIME; | |
849 | } | |
850 | break; | |
851 | } | |
852 | ||
853 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 854 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 855 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
856 | handle, units, timeout, |
857 | acpi_format_exception(status))); | |
858 | } else { | |
859 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 860 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 861 | units, timeout)); |
1da177e4 LT |
862 | } |
863 | ||
d550d98d | 864 | return status; |
1da177e4 | 865 | } |
1da177e4 | 866 | |
4be44fcd | 867 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
1da177e4 LT |
868 | |
869 | /* | |
870 | * TODO: Support for units > 1? | |
871 | */ | |
4be44fcd | 872 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 873 | { |
4be44fcd | 874 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 875 | |
1da177e4 LT |
876 | |
877 | if (!sem || (units < 1)) | |
d550d98d | 878 | return AE_BAD_PARAMETER; |
1da177e4 LT |
879 | |
880 | if (units > 1) | |
d550d98d | 881 | return AE_SUPPORT; |
1da177e4 | 882 | |
4be44fcd LB |
883 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
884 | units)); | |
1da177e4 LT |
885 | |
886 | up(sem); | |
887 | ||
d550d98d | 888 | return AE_OK; |
1da177e4 | 889 | } |
4be44fcd | 890 | |
1da177e4 LT |
891 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
892 | ||
893 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 894 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
895 | { |
896 | ||
897 | #ifdef ENABLE_DEBUGGER | |
898 | if (acpi_in_debugger) { | |
899 | u32 chars; | |
900 | ||
901 | kdb_read(buffer, sizeof(line_buf)); | |
902 | ||
903 | /* remove the CR kdb includes */ | |
904 | chars = strlen(buffer) - 1; | |
905 | buffer[chars] = '\0'; | |
906 | } | |
907 | #endif | |
908 | ||
909 | return 0; | |
910 | } | |
4be44fcd | 911 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 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 | ||
f507654d LB |
962 | static void enable_osi_linux(int enable) { |
963 | ||
964 | if (osi_linux != enable) | |
965 | printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n", | |
966 | enable ? "En": "Dis"); | |
967 | ||
968 | osi_linux = enable; | |
969 | return; | |
970 | } | |
971 | ||
1da177e4 | 972 | /* |
ae00d812 LB |
973 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
974 | * | |
1da177e4 | 975 | * empty string disables _OSI |
ae00d812 LB |
976 | * string starting with '!' disables that string |
977 | * otherwise string is added to list, augmenting built-in strings | |
1da177e4 | 978 | */ |
4be44fcd | 979 | static int __init acpi_osi_setup(char *str) |
1da177e4 LT |
980 | { |
981 | if (str == NULL || *str == '\0') { | |
982 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
983 | acpi_gbl_create_osi_method = FALSE; | |
aa2e09da LB |
984 | } else if (!strcmp("!Linux", str)) { |
985 | enable_osi_linux(0); | |
ae00d812 LB |
986 | } else if (*str == '!') { |
987 | if (acpi_osi_invalidate(++str) == AE_OK) | |
988 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); | |
f507654d LB |
989 | } else if (!strcmp("Linux", str)) { |
990 | enable_osi_linux(1); | |
ae00d812 LB |
991 | } else if (*osi_additional_string == '\0') { |
992 | strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX); | |
993 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); | |
1da177e4 LT |
994 | } |
995 | ||
996 | return 1; | |
997 | } | |
998 | ||
999 | __setup("acpi_osi=", acpi_osi_setup); | |
1000 | ||
1001 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 1002 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
1003 | { |
1004 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
1005 | ||
1006 | acpi_gbl_all_methods_serialized = TRUE; | |
1007 | ||
1008 | return 1; | |
1009 | } | |
1010 | ||
1011 | __setup("acpi_serialize", acpi_serialize_setup); | |
1012 | ||
1013 | /* | |
1014 | * Wake and Run-Time GPES are expected to be separate. | |
1015 | * We disable wake-GPEs at run-time to prevent spurious | |
1016 | * interrupts. | |
1017 | * | |
1018 | * However, if a system exists that shares Wake and | |
1019 | * Run-time events on the same GPE this flag is available | |
1020 | * to tell Linux to keep the wake-time GPEs enabled at run-time. | |
1021 | */ | |
4be44fcd | 1022 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
1da177e4 LT |
1023 | { |
1024 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); | |
1025 | ||
1026 | acpi_gbl_leave_wake_gpes_disabled = FALSE; | |
1027 | ||
1028 | return 1; | |
1029 | } | |
1030 | ||
1031 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); | |
1032 | ||
73459f73 RM |
1033 | /* |
1034 | * Acquire a spinlock. | |
1035 | * | |
1036 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1037 | */ |
1038 | ||
967440e3 | 1039 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1040 | { |
b8e4d893 | 1041 | acpi_cpu_flags flags; |
967440e3 | 1042 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1043 | return flags; |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * Release a spinlock. See above. | |
1048 | */ | |
1049 | ||
967440e3 | 1050 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1051 | { |
967440e3 | 1052 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1053 | } |
1054 | ||
73459f73 RM |
1055 | #ifndef ACPI_USE_LOCAL_CACHE |
1056 | ||
1057 | /******************************************************************************* | |
1058 | * | |
1059 | * FUNCTION: acpi_os_create_cache | |
1060 | * | |
b229cf92 BM |
1061 | * PARAMETERS: name - Ascii name for the cache |
1062 | * size - Size of each cached object | |
1063 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1064 | * cache - Where the new cache object is returned | |
73459f73 | 1065 | * |
b229cf92 | 1066 | * RETURN: status |
73459f73 RM |
1067 | * |
1068 | * DESCRIPTION: Create a cache object | |
1069 | * | |
1070 | ******************************************************************************/ | |
1071 | ||
1072 | acpi_status | |
4be44fcd | 1073 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1074 | { |
20c2df83 | 1075 | *cache = kmem_cache_create(name, size, 0, 0, NULL); |
a6fdbf90 | 1076 | if (*cache == NULL) |
b229cf92 BM |
1077 | return AE_ERROR; |
1078 | else | |
1079 | return AE_OK; | |
73459f73 RM |
1080 | } |
1081 | ||
1082 | /******************************************************************************* | |
1083 | * | |
1084 | * FUNCTION: acpi_os_purge_cache | |
1085 | * | |
1086 | * PARAMETERS: Cache - Handle to cache object | |
1087 | * | |
1088 | * RETURN: Status | |
1089 | * | |
1090 | * DESCRIPTION: Free all objects within the requested cache. | |
1091 | * | |
1092 | ******************************************************************************/ | |
1093 | ||
4be44fcd | 1094 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1095 | { |
50dd0969 | 1096 | kmem_cache_shrink(cache); |
4be44fcd | 1097 | return (AE_OK); |
73459f73 RM |
1098 | } |
1099 | ||
1100 | /******************************************************************************* | |
1101 | * | |
1102 | * FUNCTION: acpi_os_delete_cache | |
1103 | * | |
1104 | * PARAMETERS: Cache - Handle to cache object | |
1105 | * | |
1106 | * RETURN: Status | |
1107 | * | |
1108 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1109 | * cache object. | |
1110 | * | |
1111 | ******************************************************************************/ | |
1112 | ||
4be44fcd | 1113 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1114 | { |
1a1d92c1 | 1115 | kmem_cache_destroy(cache); |
4be44fcd | 1116 | return (AE_OK); |
73459f73 RM |
1117 | } |
1118 | ||
1119 | /******************************************************************************* | |
1120 | * | |
1121 | * FUNCTION: acpi_os_release_object | |
1122 | * | |
1123 | * PARAMETERS: Cache - Handle to cache object | |
1124 | * Object - The object to be released | |
1125 | * | |
1126 | * RETURN: None | |
1127 | * | |
1128 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1129 | * the object is deleted. | |
1130 | * | |
1131 | ******************************************************************************/ | |
1132 | ||
4be44fcd | 1133 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1134 | { |
4be44fcd LB |
1135 | kmem_cache_free(cache, object); |
1136 | return (AE_OK); | |
73459f73 RM |
1137 | } |
1138 | ||
5a4e1432 LB |
1139 | /** |
1140 | * acpi_dmi_dump - dump DMI slots needed for blacklist entry | |
1141 | * | |
1142 | * Returns 0 on success | |
1143 | */ | |
1144 | int acpi_dmi_dump(void) | |
1145 | { | |
1146 | ||
1147 | if (!dmi_available) | |
1148 | return -1; | |
1149 | ||
1150 | printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n", | |
1151 | dmi_get_slot(DMI_SYS_VENDOR)); | |
1152 | printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n", | |
1153 | dmi_get_slot(DMI_PRODUCT_NAME)); | |
1154 | printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n", | |
1155 | dmi_get_slot(DMI_PRODUCT_VERSION)); | |
1156 | printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n", | |
1157 | dmi_get_slot(DMI_BOARD_NAME)); | |
1158 | printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n", | |
1159 | dmi_get_slot(DMI_BIOS_VENDOR)); | |
1160 | printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n", | |
1161 | dmi_get_slot(DMI_BIOS_DATE)); | |
1162 | ||
1163 | return 0; | |
1164 | } | |
1165 | ||
1166 | ||
b229cf92 BM |
1167 | /****************************************************************************** |
1168 | * | |
1169 | * FUNCTION: acpi_os_validate_interface | |
1170 | * | |
1171 | * PARAMETERS: interface - Requested interface to be validated | |
1172 | * | |
1173 | * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise | |
1174 | * | |
1175 | * DESCRIPTION: Match an interface string to the interfaces supported by the | |
1176 | * host. Strings originate from an AML call to the _OSI method. | |
1177 | * | |
1178 | *****************************************************************************/ | |
1179 | ||
1180 | acpi_status | |
1181 | acpi_os_validate_interface (char *interface) | |
1182 | { | |
ae00d812 LB |
1183 | if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX)) |
1184 | return AE_OK; | |
f507654d LB |
1185 | if (!strcmp("Linux", interface)) { |
1186 | printk(KERN_WARNING PREFIX | |
1187 | "System BIOS is requesting _OSI(Linux)\n"); | |
f40cd6fd LB |
1188 | if (acpi_dmi_dump()) |
1189 | printk(KERN_NOTICE PREFIX | |
1190 | "[please extract dmidecode output]\n"); | |
1191 | printk(KERN_NOTICE PREFIX | |
1192 | "Please send DMI info above to " | |
1193 | "linux-acpi@vger.kernel.org\n"); | |
1194 | printk(KERN_NOTICE PREFIX | |
1195 | "If \"acpi_osi=%sLinux\" works better, " | |
1196 | "please notify linux-acpi@vger.kernel.org\n", | |
1197 | osi_linux ? "!" : ""); | |
f507654d LB |
1198 | if(osi_linux) |
1199 | return AE_OK; | |
1200 | } | |
ae00d812 | 1201 | return AE_SUPPORT; |
b229cf92 BM |
1202 | } |
1203 | ||
b229cf92 BM |
1204 | /****************************************************************************** |
1205 | * | |
1206 | * FUNCTION: acpi_os_validate_address | |
1207 | * | |
1208 | * PARAMETERS: space_id - ACPI space ID | |
1209 | * address - Physical address | |
1210 | * length - Address length | |
1211 | * | |
1212 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1213 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1214 | * | |
1215 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1216 | * the addresses accessed by AML operation regions. | |
1217 | * | |
1218 | *****************************************************************************/ | |
1219 | ||
1220 | acpi_status | |
1221 | acpi_os_validate_address ( | |
1222 | u8 space_id, | |
1223 | acpi_physical_address address, | |
1224 | acpi_size length) | |
1225 | { | |
1226 | ||
1227 | return AE_OK; | |
1228 | } | |
1229 | ||
73459f73 | 1230 | #endif |