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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 LB |
81 | |
82 | #ifdef CONFIG_DMI | |
dd272b57 | 83 | static struct __initdata dmi_system_id acpi_osl_dmi_table[]; |
f507654d LB |
84 | #endif |
85 | ||
9a47cdb1 BH |
86 | static void __init acpi_request_region (struct acpi_generic_address *addr, |
87 | unsigned int length, char *desc) | |
88 | { | |
89 | struct resource *res; | |
90 | ||
91 | if (!addr->address || !length) | |
92 | return; | |
93 | ||
eee3c859 | 94 | if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
9a47cdb1 | 95 | res = request_region(addr->address, length, desc); |
eee3c859 | 96 | else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
9a47cdb1 BH |
97 | res = request_mem_region(addr->address, length, desc); |
98 | } | |
99 | ||
100 | static int __init acpi_reserve_resources(void) | |
101 | { | |
eee3c859 | 102 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
103 | "ACPI PM1a_EVT_BLK"); |
104 | ||
eee3c859 | 105 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
106 | "ACPI PM1b_EVT_BLK"); |
107 | ||
eee3c859 | 108 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
109 | "ACPI PM1a_CNT_BLK"); |
110 | ||
eee3c859 | 111 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
112 | "ACPI PM1b_CNT_BLK"); |
113 | ||
eee3c859 LB |
114 | if (acpi_gbl_FADT.pm_timer_length == 4) |
115 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 116 | |
eee3c859 | 117 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
118 | "ACPI PM2_CNT_BLK"); |
119 | ||
120 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
121 | ||
eee3c859 LB |
122 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
123 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
124 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 125 | |
eee3c859 LB |
126 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
127 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
128 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
129 | |
130 | return 0; | |
131 | } | |
132 | device_initcall(acpi_reserve_resources); | |
133 | ||
dd272b57 | 134 | acpi_status __init acpi_os_initialize(void) |
1da177e4 | 135 | { |
f507654d | 136 | dmi_check_system(acpi_osl_dmi_table); |
1da177e4 LT |
137 | return AE_OK; |
138 | } | |
139 | ||
4be44fcd | 140 | acpi_status acpi_os_initialize1(void) |
1da177e4 LT |
141 | { |
142 | /* | |
143 | * Initialize PCI configuration space access, as we'll need to access | |
144 | * it while walking the namespace (bus 0 and root bridges w/ _BBNs). | |
145 | */ | |
1da177e4 | 146 | if (!raw_pci_ops) { |
4be44fcd LB |
147 | printk(KERN_ERR PREFIX |
148 | "Access to PCI configuration space unavailable\n"); | |
1da177e4 LT |
149 | return AE_NULL_ENTRY; |
150 | } | |
1da177e4 | 151 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
88db5e14 | 152 | kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify"); |
1da177e4 | 153 | BUG_ON(!kacpid_wq); |
88db5e14 | 154 | BUG_ON(!kacpi_notify_wq); |
1da177e4 LT |
155 | return AE_OK; |
156 | } | |
157 | ||
4be44fcd | 158 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
159 | { |
160 | if (acpi_irq_handler) { | |
161 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
162 | acpi_irq_handler); | |
163 | } | |
164 | ||
165 | destroy_workqueue(kacpid_wq); | |
88db5e14 | 166 | destroy_workqueue(kacpi_notify_wq); |
1da177e4 LT |
167 | |
168 | return AE_OK; | |
169 | } | |
170 | ||
4be44fcd | 171 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
172 | { |
173 | va_list args; | |
174 | va_start(args, fmt); | |
175 | acpi_os_vprintf(fmt, args); | |
176 | va_end(args); | |
177 | } | |
4be44fcd | 178 | |
1da177e4 LT |
179 | EXPORT_SYMBOL(acpi_os_printf); |
180 | ||
4be44fcd | 181 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
182 | { |
183 | static char buffer[512]; | |
4be44fcd | 184 | |
1da177e4 LT |
185 | vsprintf(buffer, fmt, args); |
186 | ||
187 | #ifdef ENABLE_DEBUGGER | |
188 | if (acpi_in_debugger) { | |
189 | kdb_printf("%s", buffer); | |
190 | } else { | |
191 | printk("%s", buffer); | |
192 | } | |
193 | #else | |
194 | printk("%s", buffer); | |
195 | #endif | |
196 | } | |
197 | ||
ad71860a | 198 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
199 | { |
200 | if (efi_enabled) { | |
b2c99e3c | 201 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 202 | return efi.acpi20; |
b2c99e3c | 203 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 204 | return efi.acpi; |
1da177e4 | 205 | else { |
4be44fcd LB |
206 | printk(KERN_ERR PREFIX |
207 | "System description tables not found\n"); | |
ad71860a | 208 | return 0; |
1da177e4 | 209 | } |
ad71860a AS |
210 | } else |
211 | return acpi_find_rsdp(); | |
1da177e4 LT |
212 | } |
213 | ||
ad71860a | 214 | void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
1da177e4 | 215 | { |
9f4fd61f BH |
216 | if (phys > ULONG_MAX) { |
217 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 218 | return NULL; |
1da177e4 | 219 | } |
ad71860a AS |
220 | if (acpi_gbl_permanent_mmap) |
221 | /* | |
222 | * ioremap checks to ensure this is in reserved space | |
223 | */ | |
224 | return ioremap((unsigned long)phys, size); | |
225 | else | |
226 | return __acpi_map_table((unsigned long)phys, size); | |
1da177e4 | 227 | } |
55a82ab3 | 228 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 229 | |
4be44fcd | 230 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
1da177e4 | 231 | { |
ad71860a AS |
232 | if (acpi_gbl_permanent_mmap) { |
233 | iounmap(virt); | |
234 | } | |
1da177e4 | 235 | } |
55a82ab3 | 236 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 LT |
237 | |
238 | #ifdef ACPI_FUTURE_USAGE | |
239 | acpi_status | |
4be44fcd | 240 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 241 | { |
4be44fcd | 242 | if (!phys || !virt) |
1da177e4 LT |
243 | return AE_BAD_PARAMETER; |
244 | ||
245 | *phys = virt_to_phys(virt); | |
246 | ||
247 | return AE_OK; | |
248 | } | |
249 | #endif | |
250 | ||
251 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
252 | ||
253 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
254 | ||
255 | acpi_status | |
4be44fcd LB |
256 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
257 | acpi_string * new_val) | |
1da177e4 LT |
258 | { |
259 | if (!init_val || !new_val) | |
260 | return AE_BAD_PARAMETER; | |
261 | ||
262 | *new_val = NULL; | |
4be44fcd | 263 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 264 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 265 | acpi_os_name); |
1da177e4 LT |
266 | *new_val = acpi_os_name; |
267 | } | |
268 | ||
269 | return AE_OK; | |
270 | } | |
271 | ||
272 | acpi_status | |
4be44fcd LB |
273 | acpi_os_table_override(struct acpi_table_header * existing_table, |
274 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
275 | { |
276 | if (!existing_table || !new_table) | |
277 | return AE_BAD_PARAMETER; | |
278 | ||
279 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
280 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 281 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 LT |
282 | else |
283 | *new_table = NULL; | |
284 | #else | |
285 | *new_table = NULL; | |
286 | #endif | |
287 | return AE_OK; | |
288 | } | |
289 | ||
7d12e780 | 290 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 291 | { |
4be44fcd | 292 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
1da177e4 LT |
293 | } |
294 | ||
295 | acpi_status | |
4be44fcd LB |
296 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
297 | void *context) | |
1da177e4 LT |
298 | { |
299 | unsigned int irq; | |
300 | ||
301 | /* | |
302 | * Ignore the GSI from the core, and use the value in our copy of the | |
303 | * FADT. It may not be the same if an interrupt source override exists | |
304 | * for the SCI. | |
305 | */ | |
cee324b1 | 306 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
307 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
308 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
309 | gsi); | |
310 | return AE_OK; | |
311 | } | |
312 | ||
313 | acpi_irq_handler = handler; | |
314 | acpi_irq_context = context; | |
dace1453 | 315 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
316 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
317 | return AE_NOT_ACQUIRED; | |
318 | } | |
319 | acpi_irq_irq = irq; | |
320 | ||
321 | return AE_OK; | |
322 | } | |
323 | ||
4be44fcd | 324 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
325 | { |
326 | if (irq) { | |
327 | free_irq(irq, acpi_irq); | |
328 | acpi_irq_handler = NULL; | |
329 | acpi_irq_irq = 0; | |
330 | } | |
331 | ||
332 | return AE_OK; | |
333 | } | |
334 | ||
335 | /* | |
336 | * Running in interpreter thread context, safe to sleep | |
337 | */ | |
338 | ||
4be44fcd | 339 | void acpi_os_sleep(acpi_integer ms) |
1da177e4 | 340 | { |
01a527ec | 341 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 342 | } |
4be44fcd | 343 | |
1da177e4 LT |
344 | EXPORT_SYMBOL(acpi_os_sleep); |
345 | ||
4be44fcd | 346 | void acpi_os_stall(u32 us) |
1da177e4 LT |
347 | { |
348 | while (us) { | |
349 | u32 delay = 1000; | |
350 | ||
351 | if (delay > us) | |
352 | delay = us; | |
353 | udelay(delay); | |
354 | touch_nmi_watchdog(); | |
355 | us -= delay; | |
356 | } | |
357 | } | |
4be44fcd | 358 | |
1da177e4 LT |
359 | EXPORT_SYMBOL(acpi_os_stall); |
360 | ||
361 | /* | |
362 | * Support ACPI 3.0 AML Timer operand | |
363 | * Returns 64-bit free-running, monotonically increasing timer | |
364 | * with 100ns granularity | |
365 | */ | |
4be44fcd | 366 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
367 | { |
368 | static u64 t; | |
369 | ||
370 | #ifdef CONFIG_HPET | |
371 | /* TBD: use HPET if available */ | |
372 | #endif | |
373 | ||
374 | #ifdef CONFIG_X86_PM_TIMER | |
375 | /* TBD: default to PM timer if HPET was not available */ | |
376 | #endif | |
377 | if (!t) | |
378 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
379 | ||
380 | return ++t; | |
381 | } | |
382 | ||
4be44fcd | 383 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
384 | { |
385 | u32 dummy; | |
386 | ||
387 | if (!value) | |
388 | value = &dummy; | |
389 | ||
49fbabf5 ZY |
390 | *value = 0; |
391 | if (width <= 8) { | |
4be44fcd | 392 | *(u8 *) value = inb(port); |
49fbabf5 | 393 | } else if (width <= 16) { |
4be44fcd | 394 | *(u16 *) value = inw(port); |
49fbabf5 | 395 | } else if (width <= 32) { |
4be44fcd | 396 | *(u32 *) value = inl(port); |
49fbabf5 | 397 | } else { |
1da177e4 LT |
398 | BUG(); |
399 | } | |
400 | ||
401 | return AE_OK; | |
402 | } | |
4be44fcd | 403 | |
1da177e4 LT |
404 | EXPORT_SYMBOL(acpi_os_read_port); |
405 | ||
4be44fcd | 406 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 407 | { |
49fbabf5 | 408 | if (width <= 8) { |
1da177e4 | 409 | outb(value, port); |
49fbabf5 | 410 | } else if (width <= 16) { |
1da177e4 | 411 | outw(value, port); |
49fbabf5 | 412 | } else if (width <= 32) { |
1da177e4 | 413 | outl(value, port); |
49fbabf5 | 414 | } else { |
1da177e4 LT |
415 | BUG(); |
416 | } | |
417 | ||
418 | return AE_OK; | |
419 | } | |
4be44fcd | 420 | |
1da177e4 LT |
421 | EXPORT_SYMBOL(acpi_os_write_port); |
422 | ||
423 | acpi_status | |
4be44fcd | 424 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 425 | { |
4be44fcd LB |
426 | u32 dummy; |
427 | void __iomem *virt_addr; | |
1da177e4 | 428 | |
9f4fd61f | 429 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
430 | if (!value) |
431 | value = &dummy; | |
432 | ||
433 | switch (width) { | |
434 | case 8: | |
4be44fcd | 435 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
436 | break; |
437 | case 16: | |
4be44fcd | 438 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
439 | break; |
440 | case 32: | |
4be44fcd | 441 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
442 | break; |
443 | default: | |
444 | BUG(); | |
445 | } | |
446 | ||
9f4fd61f | 447 | iounmap(virt_addr); |
1da177e4 LT |
448 | |
449 | return AE_OK; | |
450 | } | |
451 | ||
452 | acpi_status | |
4be44fcd | 453 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 454 | { |
4be44fcd | 455 | void __iomem *virt_addr; |
1da177e4 | 456 | |
9f4fd61f | 457 | virt_addr = ioremap(phys_addr, width); |
1da177e4 LT |
458 | |
459 | switch (width) { | |
460 | case 8: | |
461 | writeb(value, virt_addr); | |
462 | break; | |
463 | case 16: | |
464 | writew(value, virt_addr); | |
465 | break; | |
466 | case 32: | |
467 | writel(value, virt_addr); | |
468 | break; | |
469 | default: | |
470 | BUG(); | |
471 | } | |
472 | ||
9f4fd61f | 473 | iounmap(virt_addr); |
1da177e4 LT |
474 | |
475 | return AE_OK; | |
476 | } | |
477 | ||
1da177e4 | 478 | acpi_status |
4be44fcd LB |
479 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
480 | void *value, u32 width) | |
1da177e4 LT |
481 | { |
482 | int result, size; | |
483 | ||
484 | if (!value) | |
485 | return AE_BAD_PARAMETER; | |
486 | ||
487 | switch (width) { | |
488 | case 8: | |
489 | size = 1; | |
490 | break; | |
491 | case 16: | |
492 | size = 2; | |
493 | break; | |
494 | case 32: | |
495 | size = 4; | |
496 | break; | |
497 | default: | |
498 | return AE_ERROR; | |
499 | } | |
500 | ||
501 | BUG_ON(!raw_pci_ops); | |
502 | ||
503 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
504 | PCI_DEVFN(pci_id->device, pci_id->function), |
505 | reg, size, value); | |
1da177e4 LT |
506 | |
507 | return (result ? AE_ERROR : AE_OK); | |
508 | } | |
4be44fcd | 509 | |
1da177e4 LT |
510 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
511 | ||
512 | acpi_status | |
4be44fcd LB |
513 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
514 | acpi_integer value, u32 width) | |
1da177e4 LT |
515 | { |
516 | int result, size; | |
517 | ||
518 | switch (width) { | |
519 | case 8: | |
520 | size = 1; | |
521 | break; | |
522 | case 16: | |
523 | size = 2; | |
524 | break; | |
525 | case 32: | |
526 | size = 4; | |
527 | break; | |
528 | default: | |
529 | return AE_ERROR; | |
530 | } | |
531 | ||
532 | BUG_ON(!raw_pci_ops); | |
533 | ||
534 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, | |
4be44fcd LB |
535 | PCI_DEVFN(pci_id->device, pci_id->function), |
536 | reg, size, value); | |
1da177e4 LT |
537 | |
538 | return (result ? AE_ERROR : AE_OK); | |
539 | } | |
540 | ||
541 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
542 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
543 | acpi_handle chandle, /* current node */ | |
544 | struct acpi_pci_id **id, | |
545 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 546 | { |
4be44fcd LB |
547 | acpi_handle handle; |
548 | struct acpi_pci_id *pci_id = *id; | |
549 | acpi_status status; | |
550 | unsigned long temp; | |
551 | acpi_object_type type; | |
552 | u8 tu8; | |
1da177e4 LT |
553 | |
554 | acpi_get_parent(chandle, &handle); | |
555 | if (handle != rhandle) { | |
4be44fcd LB |
556 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
557 | bus_number); | |
1da177e4 LT |
558 | |
559 | status = acpi_get_type(handle, &type); | |
4be44fcd | 560 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
561 | return; |
562 | ||
4be44fcd LB |
563 | status = |
564 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, | |
565 | &temp); | |
1da177e4 | 566 | if (ACPI_SUCCESS(status)) { |
4be44fcd LB |
567 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
568 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
569 | |
570 | if (*is_bridge) | |
571 | pci_id->bus = *bus_number; | |
572 | ||
573 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd LB |
574 | status = |
575 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, | |
576 | 8); | |
577 | if (ACPI_SUCCESS(status) | |
578 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { | |
579 | status = | |
580 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
581 | &tu8, 8); | |
1da177e4 LT |
582 | if (!ACPI_SUCCESS(status)) { |
583 | /* Certainly broken... FIX ME */ | |
584 | return; | |
585 | } | |
586 | *is_bridge = 1; | |
587 | pci_id->bus = tu8; | |
4be44fcd LB |
588 | status = |
589 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
590 | &tu8, 8); | |
1da177e4 LT |
591 | if (ACPI_SUCCESS(status)) { |
592 | *bus_number = tu8; | |
593 | } | |
594 | } else | |
595 | *is_bridge = 0; | |
596 | } | |
597 | } | |
598 | } | |
599 | ||
4be44fcd LB |
600 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
601 | acpi_handle chandle, /* current node */ | |
602 | struct acpi_pci_id **id) | |
1da177e4 LT |
603 | { |
604 | int is_bridge = 1; | |
605 | u8 bus_number = (*id)->bus; | |
606 | ||
607 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
608 | } | |
609 | ||
65f27f38 | 610 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
611 | { |
612 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
613 | if (!dpc) { | |
614 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); | |
615 | return; | |
616 | } | |
617 | ||
618 | dpc->function(dpc->context); | |
619 | kfree(dpc); | |
620 | ||
621 | /* Yield cpu to notify thread */ | |
622 | cond_resched(); | |
623 | ||
624 | return; | |
625 | } | |
626 | ||
627 | static void acpi_os_execute_notify(struct work_struct *work) | |
1da177e4 | 628 | { |
65f27f38 | 629 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
1da177e4 | 630 | |
1da177e4 | 631 | if (!dpc) { |
6468463a | 632 | printk(KERN_ERR PREFIX "Invalid (NULL) context\n"); |
d550d98d | 633 | return; |
1da177e4 LT |
634 | } |
635 | ||
636 | dpc->function(dpc->context); | |
637 | ||
638 | kfree(dpc); | |
639 | ||
d550d98d | 640 | return; |
1da177e4 LT |
641 | } |
642 | ||
b8d35192 AS |
643 | /******************************************************************************* |
644 | * | |
645 | * FUNCTION: acpi_os_execute | |
646 | * | |
647 | * PARAMETERS: Type - Type of the callback | |
648 | * Function - Function to be executed | |
649 | * Context - Function parameters | |
650 | * | |
651 | * RETURN: Status | |
652 | * | |
653 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
654 | * immediately executes function on a separate thread. | |
655 | * | |
656 | ******************************************************************************/ | |
657 | ||
658 | acpi_status acpi_os_execute(acpi_execute_type type, | |
4be44fcd | 659 | acpi_osd_exec_callback function, void *context) |
1da177e4 | 660 | { |
4be44fcd LB |
661 | acpi_status status = AE_OK; |
662 | struct acpi_os_dpc *dpc; | |
72945b2b | 663 | |
72945b2b LB |
664 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
665 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
666 | function, context)); | |
1da177e4 LT |
667 | |
668 | if (!function) | |
88db5e14 | 669 | return AE_BAD_PARAMETER; |
72945b2b | 670 | |
1da177e4 LT |
671 | /* |
672 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 673 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
674 | * way that allows us to also free its memory inside the callee. |
675 | * Because we may want to schedule several tasks with different | |
676 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 677 | * having a static work_struct. |
1da177e4 | 678 | */ |
72945b2b | 679 | |
65f27f38 | 680 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 681 | if (!dpc) |
b976fe19 LT |
682 | return_ACPI_STATUS(AE_NO_MEMORY); |
683 | ||
1da177e4 LT |
684 | dpc->function = function; |
685 | dpc->context = context; | |
b976fe19 | 686 | |
88db5e14 AS |
687 | if (type == OSL_NOTIFY_HANDLER) { |
688 | INIT_WORK(&dpc->work, acpi_os_execute_notify); | |
689 | if (!queue_work(kacpi_notify_wq, &dpc->work)) { | |
690 | status = AE_ERROR; | |
691 | kfree(dpc); | |
692 | } | |
693 | } else { | |
694 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
695 | if (!queue_work(kacpid_wq, &dpc->work)) { | |
696 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | |
b976fe19 | 697 | "Call to queue_work() failed.\n")); |
88db5e14 AS |
698 | status = AE_ERROR; |
699 | kfree(dpc); | |
700 | } | |
1da177e4 | 701 | } |
b976fe19 | 702 | return_ACPI_STATUS(status); |
1da177e4 | 703 | } |
4be44fcd | 704 | |
b8d35192 | 705 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 706 | |
4be44fcd | 707 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
708 | { |
709 | flush_workqueue(kacpid_wq); | |
710 | } | |
4be44fcd | 711 | |
1da177e4 LT |
712 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
713 | ||
714 | /* | |
715 | * Allocate the memory for a spinlock and initialize it. | |
716 | */ | |
967440e3 | 717 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 718 | { |
967440e3 | 719 | spin_lock_init(*handle); |
1da177e4 | 720 | |
d550d98d | 721 | return AE_OK; |
1da177e4 LT |
722 | } |
723 | ||
1da177e4 LT |
724 | /* |
725 | * Deallocate the memory for a spinlock. | |
726 | */ | |
967440e3 | 727 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 728 | { |
d550d98d | 729 | return; |
1da177e4 LT |
730 | } |
731 | ||
1da177e4 | 732 | acpi_status |
4be44fcd | 733 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 734 | { |
4be44fcd | 735 | struct semaphore *sem = NULL; |
1da177e4 | 736 | |
1da177e4 LT |
737 | |
738 | sem = acpi_os_allocate(sizeof(struct semaphore)); | |
739 | if (!sem) | |
d550d98d | 740 | return AE_NO_MEMORY; |
1da177e4 LT |
741 | memset(sem, 0, sizeof(struct semaphore)); |
742 | ||
743 | sema_init(sem, initial_units); | |
744 | ||
4be44fcd | 745 | *handle = (acpi_handle *) sem; |
1da177e4 | 746 | |
4be44fcd LB |
747 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
748 | *handle, initial_units)); | |
1da177e4 | 749 | |
d550d98d | 750 | return AE_OK; |
1da177e4 | 751 | } |
1da177e4 | 752 | |
4be44fcd | 753 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
1da177e4 LT |
754 | |
755 | /* | |
756 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
757 | * 'delete_semaphore()' function -- may result in an invalid | |
758 | * pointer dereference for non-synchronized consumers. Should | |
759 | * we at least check for blocked threads and signal/cancel them? | |
760 | */ | |
761 | ||
4be44fcd | 762 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 763 | { |
4be44fcd | 764 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 765 | |
1da177e4 LT |
766 | |
767 | if (!sem) | |
d550d98d | 768 | return AE_BAD_PARAMETER; |
1da177e4 | 769 | |
4be44fcd | 770 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 771 | |
02438d87 | 772 | kfree(sem); |
4be44fcd | 773 | sem = NULL; |
1da177e4 | 774 | |
d550d98d | 775 | return AE_OK; |
1da177e4 | 776 | } |
1da177e4 | 777 | |
4be44fcd | 778 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
1da177e4 LT |
779 | |
780 | /* | |
781 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to | |
782 | * improvise. The process is to sleep for one scheduler quantum | |
783 | * until the semaphore becomes available. Downside is that this | |
784 | * may result in starvation for timeout-based waits when there's | |
785 | * lots of semaphore activity. | |
786 | * | |
787 | * TODO: Support for units > 1? | |
788 | */ | |
4be44fcd | 789 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 790 | { |
4be44fcd LB |
791 | acpi_status status = AE_OK; |
792 | struct semaphore *sem = (struct semaphore *)handle; | |
793 | int ret = 0; | |
1da177e4 | 794 | |
1da177e4 LT |
795 | |
796 | if (!sem || (units < 1)) | |
d550d98d | 797 | return AE_BAD_PARAMETER; |
1da177e4 LT |
798 | |
799 | if (units > 1) | |
d550d98d | 800 | return AE_SUPPORT; |
1da177e4 | 801 | |
4be44fcd LB |
802 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
803 | handle, units, timeout)); | |
1da177e4 | 804 | |
d68909f4 LB |
805 | /* |
806 | * This can be called during resume with interrupts off. | |
807 | * Like boot-time, we should be single threaded and will | |
808 | * always get the lock if we try -- timeout or not. | |
809 | * If this doesn't succeed, then we will oops courtesy of | |
810 | * might_sleep() in down(). | |
811 | */ | |
812 | if (!down_trylock(sem)) | |
813 | return AE_OK; | |
814 | ||
4be44fcd | 815 | switch (timeout) { |
1da177e4 LT |
816 | /* |
817 | * No Wait: | |
818 | * -------- | |
819 | * A zero timeout value indicates that we shouldn't wait - just | |
820 | * acquire the semaphore if available otherwise return AE_TIME | |
821 | * (a.k.a. 'would block'). | |
822 | */ | |
4be44fcd LB |
823 | case 0: |
824 | if (down_trylock(sem)) | |
1da177e4 LT |
825 | status = AE_TIME; |
826 | break; | |
827 | ||
828 | /* | |
829 | * Wait Indefinitely: | |
830 | * ------------------ | |
831 | */ | |
4be44fcd | 832 | case ACPI_WAIT_FOREVER: |
1da177e4 LT |
833 | down(sem); |
834 | break; | |
835 | ||
836 | /* | |
837 | * Wait w/ Timeout: | |
838 | * ---------------- | |
839 | */ | |
4be44fcd | 840 | default: |
1da177e4 LT |
841 | // TODO: A better timeout algorithm? |
842 | { | |
843 | int i = 0; | |
4be44fcd | 844 | static const int quantum_ms = 1000 / HZ; |
1da177e4 LT |
845 | |
846 | ret = down_trylock(sem); | |
dacd9b80 | 847 | for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) { |
01a527ec | 848 | schedule_timeout_interruptible(1); |
1da177e4 LT |
849 | ret = down_trylock(sem); |
850 | } | |
4be44fcd | 851 | |
1da177e4 LT |
852 | if (ret != 0) |
853 | status = AE_TIME; | |
854 | } | |
855 | break; | |
856 | } | |
857 | ||
858 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 859 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 860 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
861 | handle, units, timeout, |
862 | acpi_format_exception(status))); | |
863 | } else { | |
864 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 865 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 866 | units, timeout)); |
1da177e4 LT |
867 | } |
868 | ||
d550d98d | 869 | return status; |
1da177e4 | 870 | } |
1da177e4 | 871 | |
4be44fcd | 872 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
1da177e4 LT |
873 | |
874 | /* | |
875 | * TODO: Support for units > 1? | |
876 | */ | |
4be44fcd | 877 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 878 | { |
4be44fcd | 879 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 880 | |
1da177e4 LT |
881 | |
882 | if (!sem || (units < 1)) | |
d550d98d | 883 | return AE_BAD_PARAMETER; |
1da177e4 LT |
884 | |
885 | if (units > 1) | |
d550d98d | 886 | return AE_SUPPORT; |
1da177e4 | 887 | |
4be44fcd LB |
888 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
889 | units)); | |
1da177e4 LT |
890 | |
891 | up(sem); | |
892 | ||
d550d98d | 893 | return AE_OK; |
1da177e4 | 894 | } |
4be44fcd | 895 | |
1da177e4 LT |
896 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
897 | ||
898 | #ifdef ACPI_FUTURE_USAGE | |
4be44fcd | 899 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
900 | { |
901 | ||
902 | #ifdef ENABLE_DEBUGGER | |
903 | if (acpi_in_debugger) { | |
904 | u32 chars; | |
905 | ||
906 | kdb_read(buffer, sizeof(line_buf)); | |
907 | ||
908 | /* remove the CR kdb includes */ | |
909 | chars = strlen(buffer) - 1; | |
910 | buffer[chars] = '\0'; | |
911 | } | |
912 | #endif | |
913 | ||
914 | return 0; | |
915 | } | |
4be44fcd | 916 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 917 | |
4be44fcd | 918 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 919 | { |
4be44fcd | 920 | switch (function) { |
1da177e4 LT |
921 | case ACPI_SIGNAL_FATAL: |
922 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
923 | break; | |
924 | case ACPI_SIGNAL_BREAKPOINT: | |
925 | /* | |
926 | * AML Breakpoint | |
927 | * ACPI spec. says to treat it as a NOP unless | |
928 | * you are debugging. So if/when we integrate | |
929 | * AML debugger into the kernel debugger its | |
930 | * hook will go here. But until then it is | |
931 | * not useful to print anything on breakpoints. | |
932 | */ | |
933 | break; | |
934 | default: | |
935 | break; | |
936 | } | |
937 | ||
938 | return AE_OK; | |
939 | } | |
4be44fcd | 940 | |
1da177e4 LT |
941 | EXPORT_SYMBOL(acpi_os_signal); |
942 | ||
4be44fcd | 943 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
944 | { |
945 | char *p = acpi_os_name; | |
4be44fcd | 946 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
947 | |
948 | if (!str || !*str) | |
949 | return 0; | |
950 | ||
951 | for (; count-- && str && *str; str++) { | |
952 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
953 | *p++ = *str; | |
954 | else if (*str == '\'' || *str == '"') | |
955 | continue; | |
956 | else | |
957 | break; | |
958 | } | |
959 | *p = 0; | |
960 | ||
961 | return 1; | |
4be44fcd | 962 | |
1da177e4 LT |
963 | } |
964 | ||
965 | __setup("acpi_os_name=", acpi_os_name_setup); | |
966 | ||
f507654d LB |
967 | static void enable_osi_linux(int enable) { |
968 | ||
969 | if (osi_linux != enable) | |
970 | printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n", | |
971 | enable ? "En": "Dis"); | |
972 | ||
973 | osi_linux = enable; | |
974 | return; | |
975 | } | |
976 | ||
1da177e4 | 977 | /* |
ae00d812 LB |
978 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
979 | * | |
1da177e4 | 980 | * empty string disables _OSI |
ae00d812 LB |
981 | * string starting with '!' disables that string |
982 | * otherwise string is added to list, augmenting built-in strings | |
1da177e4 | 983 | */ |
4be44fcd | 984 | static int __init acpi_osi_setup(char *str) |
1da177e4 LT |
985 | { |
986 | if (str == NULL || *str == '\0') { | |
987 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
988 | acpi_gbl_create_osi_method = FALSE; | |
aa2e09da LB |
989 | } else if (!strcmp("!Linux", str)) { |
990 | enable_osi_linux(0); | |
ae00d812 LB |
991 | } else if (*str == '!') { |
992 | if (acpi_osi_invalidate(++str) == AE_OK) | |
993 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); | |
f507654d LB |
994 | } else if (!strcmp("Linux", str)) { |
995 | enable_osi_linux(1); | |
ae00d812 LB |
996 | } else if (*osi_additional_string == '\0') { |
997 | strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX); | |
998 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); | |
1da177e4 LT |
999 | } |
1000 | ||
1001 | return 1; | |
1002 | } | |
1003 | ||
1004 | __setup("acpi_osi=", acpi_osi_setup); | |
1005 | ||
1006 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 1007 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
1008 | { |
1009 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
1010 | ||
1011 | acpi_gbl_all_methods_serialized = TRUE; | |
1012 | ||
1013 | return 1; | |
1014 | } | |
1015 | ||
1016 | __setup("acpi_serialize", acpi_serialize_setup); | |
1017 | ||
1018 | /* | |
1019 | * Wake and Run-Time GPES are expected to be separate. | |
1020 | * We disable wake-GPEs at run-time to prevent spurious | |
1021 | * interrupts. | |
1022 | * | |
1023 | * However, if a system exists that shares Wake and | |
1024 | * Run-time events on the same GPE this flag is available | |
1025 | * to tell Linux to keep the wake-time GPEs enabled at run-time. | |
1026 | */ | |
4be44fcd | 1027 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
1da177e4 LT |
1028 | { |
1029 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); | |
1030 | ||
1031 | acpi_gbl_leave_wake_gpes_disabled = FALSE; | |
1032 | ||
1033 | return 1; | |
1034 | } | |
1035 | ||
1036 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); | |
1037 | ||
73459f73 RM |
1038 | /* |
1039 | * Acquire a spinlock. | |
1040 | * | |
1041 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1042 | */ |
1043 | ||
967440e3 | 1044 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1045 | { |
b8e4d893 | 1046 | acpi_cpu_flags flags; |
967440e3 | 1047 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1048 | return flags; |
1049 | } | |
1050 | ||
1051 | /* | |
1052 | * Release a spinlock. See above. | |
1053 | */ | |
1054 | ||
967440e3 | 1055 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1056 | { |
967440e3 | 1057 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1058 | } |
1059 | ||
73459f73 RM |
1060 | #ifndef ACPI_USE_LOCAL_CACHE |
1061 | ||
1062 | /******************************************************************************* | |
1063 | * | |
1064 | * FUNCTION: acpi_os_create_cache | |
1065 | * | |
b229cf92 BM |
1066 | * PARAMETERS: name - Ascii name for the cache |
1067 | * size - Size of each cached object | |
1068 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1069 | * cache - Where the new cache object is returned | |
73459f73 | 1070 | * |
b229cf92 | 1071 | * RETURN: status |
73459f73 RM |
1072 | * |
1073 | * DESCRIPTION: Create a cache object | |
1074 | * | |
1075 | ******************************************************************************/ | |
1076 | ||
1077 | acpi_status | |
4be44fcd | 1078 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1079 | { |
20c2df83 | 1080 | *cache = kmem_cache_create(name, size, 0, 0, NULL); |
a6fdbf90 | 1081 | if (*cache == NULL) |
b229cf92 BM |
1082 | return AE_ERROR; |
1083 | else | |
1084 | return AE_OK; | |
73459f73 RM |
1085 | } |
1086 | ||
1087 | /******************************************************************************* | |
1088 | * | |
1089 | * FUNCTION: acpi_os_purge_cache | |
1090 | * | |
1091 | * PARAMETERS: Cache - Handle to cache object | |
1092 | * | |
1093 | * RETURN: Status | |
1094 | * | |
1095 | * DESCRIPTION: Free all objects within the requested cache. | |
1096 | * | |
1097 | ******************************************************************************/ | |
1098 | ||
4be44fcd | 1099 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1100 | { |
50dd0969 | 1101 | kmem_cache_shrink(cache); |
4be44fcd | 1102 | return (AE_OK); |
73459f73 RM |
1103 | } |
1104 | ||
1105 | /******************************************************************************* | |
1106 | * | |
1107 | * FUNCTION: acpi_os_delete_cache | |
1108 | * | |
1109 | * PARAMETERS: Cache - Handle to cache object | |
1110 | * | |
1111 | * RETURN: Status | |
1112 | * | |
1113 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1114 | * cache object. | |
1115 | * | |
1116 | ******************************************************************************/ | |
1117 | ||
4be44fcd | 1118 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1119 | { |
1a1d92c1 | 1120 | kmem_cache_destroy(cache); |
4be44fcd | 1121 | return (AE_OK); |
73459f73 RM |
1122 | } |
1123 | ||
1124 | /******************************************************************************* | |
1125 | * | |
1126 | * FUNCTION: acpi_os_release_object | |
1127 | * | |
1128 | * PARAMETERS: Cache - Handle to cache object | |
1129 | * Object - The object to be released | |
1130 | * | |
1131 | * RETURN: None | |
1132 | * | |
1133 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1134 | * the object is deleted. | |
1135 | * | |
1136 | ******************************************************************************/ | |
1137 | ||
4be44fcd | 1138 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1139 | { |
4be44fcd LB |
1140 | kmem_cache_free(cache, object); |
1141 | return (AE_OK); | |
73459f73 RM |
1142 | } |
1143 | ||
b229cf92 BM |
1144 | /****************************************************************************** |
1145 | * | |
1146 | * FUNCTION: acpi_os_validate_interface | |
1147 | * | |
1148 | * PARAMETERS: interface - Requested interface to be validated | |
1149 | * | |
1150 | * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise | |
1151 | * | |
1152 | * DESCRIPTION: Match an interface string to the interfaces supported by the | |
1153 | * host. Strings originate from an AML call to the _OSI method. | |
1154 | * | |
1155 | *****************************************************************************/ | |
1156 | ||
1157 | acpi_status | |
1158 | acpi_os_validate_interface (char *interface) | |
1159 | { | |
ae00d812 LB |
1160 | if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX)) |
1161 | return AE_OK; | |
f507654d LB |
1162 | if (!strcmp("Linux", interface)) { |
1163 | printk(KERN_WARNING PREFIX | |
1164 | "System BIOS is requesting _OSI(Linux)\n"); | |
f507654d LB |
1165 | printk(KERN_WARNING PREFIX |
1166 | "If \"acpi_osi=Linux\" works better,\n" | |
1167 | "Please send dmidecode " | |
1168 | "to linux-acpi@vger.kernel.org\n"); | |
f507654d LB |
1169 | if(osi_linux) |
1170 | return AE_OK; | |
1171 | } | |
ae00d812 | 1172 | return AE_SUPPORT; |
b229cf92 BM |
1173 | } |
1174 | ||
b229cf92 BM |
1175 | /****************************************************************************** |
1176 | * | |
1177 | * FUNCTION: acpi_os_validate_address | |
1178 | * | |
1179 | * PARAMETERS: space_id - ACPI space ID | |
1180 | * address - Physical address | |
1181 | * length - Address length | |
1182 | * | |
1183 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1184 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1185 | * | |
1186 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1187 | * the addresses accessed by AML operation regions. | |
1188 | * | |
1189 | *****************************************************************************/ | |
1190 | ||
1191 | acpi_status | |
1192 | acpi_os_validate_address ( | |
1193 | u8 space_id, | |
1194 | acpi_physical_address address, | |
1195 | acpi_size length) | |
1196 | { | |
1197 | ||
1198 | return AE_OK; | |
1199 | } | |
1200 | ||
f507654d | 1201 | #ifdef CONFIG_DMI |
1855256c | 1202 | static int dmi_osi_linux(const struct dmi_system_id *d) |
f507654d | 1203 | { |
072971d7 | 1204 | printk(KERN_NOTICE "%s detected: enabling _OSI(Linux)\n", d->ident); |
f507654d LB |
1205 | enable_osi_linux(1); |
1206 | return 0; | |
1207 | } | |
f507654d | 1208 | |
dd272b57 | 1209 | static struct dmi_system_id acpi_osl_dmi_table[] __initdata = { |
f507654d LB |
1210 | /* |
1211 | * Boxes that need _OSI(Linux) | |
1212 | */ | |
1213 | { | |
1214 | .callback = dmi_osi_linux, | |
1215 | .ident = "Intel Napa CRB", | |
1216 | .matches = { | |
1217 | DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"), | |
1218 | DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"), | |
1219 | }, | |
1220 | }, | |
f507654d LB |
1221 | {} |
1222 | }; | |
1223 | #endif /* CONFIG_DMI */ | |
b229cf92 | 1224 | |
73459f73 | 1225 | #endif |