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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> | |
f1241c87 MW |
7 | * Copyright (c) 2008 Intel Corporation |
8 | * Author: Matthew Wilcox <willy@linux.intel.com> | |
1da177e4 LT |
9 | * |
10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
27 | * | |
28 | */ | |
29 | ||
1da177e4 LT |
30 | #include <linux/module.h> |
31 | #include <linux/kernel.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/mm.h> | |
ba242d5b | 34 | #include <linux/highmem.h> |
1da177e4 | 35 | #include <linux/pci.h> |
1da177e4 LT |
36 | #include <linux/interrupt.h> |
37 | #include <linux/kmod.h> | |
38 | #include <linux/delay.h> | |
39 | #include <linux/workqueue.h> | |
40 | #include <linux/nmi.h> | |
ad71860a | 41 | #include <linux/acpi.h> |
2d6d9fd3 | 42 | #include <linux/acpi_io.h> |
1da177e4 | 43 | #include <linux/efi.h> |
df92e695 TR |
44 | #include <linux/ioport.h> |
45 | #include <linux/list.h> | |
f1241c87 MW |
46 | #include <linux/jiffies.h> |
47 | #include <linux/semaphore.h> | |
48 | ||
49 | #include <asm/io.h> | |
50 | #include <asm/uaccess.h> | |
51 | ||
52 | #include <acpi/acpi.h> | |
53 | #include <acpi/acpi_bus.h> | |
54 | #include <acpi/processor.h> | |
1da177e4 | 55 | |
1da177e4 | 56 | #define _COMPONENT ACPI_OS_SERVICES |
f52fd66d | 57 | ACPI_MODULE_NAME("osl"); |
1da177e4 | 58 | #define PREFIX "ACPI: " |
4be44fcd LB |
59 | struct acpi_os_dpc { |
60 | acpi_osd_exec_callback function; | |
61 | void *context; | |
65f27f38 | 62 | struct work_struct work; |
9ac61856 | 63 | int wait; |
1da177e4 LT |
64 | }; |
65 | ||
66 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
67 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE | |
68 | #endif | |
69 | ||
70 | #ifdef ENABLE_DEBUGGER | |
71 | #include <linux/kdb.h> | |
72 | ||
73 | /* stuff for debugger support */ | |
74 | int acpi_in_debugger; | |
75 | EXPORT_SYMBOL(acpi_in_debugger); | |
76 | ||
77 | extern char line_buf[80]; | |
4be44fcd | 78 | #endif /*ENABLE_DEBUGGER */ |
1da177e4 | 79 | |
09f98a82 TL |
80 | static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl, |
81 | u32 pm1b_ctrl); | |
82 | ||
1da177e4 LT |
83 | static acpi_osd_handler acpi_irq_handler; |
84 | static void *acpi_irq_context; | |
85 | static struct workqueue_struct *kacpid_wq; | |
88db5e14 | 86 | static struct workqueue_struct *kacpi_notify_wq; |
6af8bef1 PB |
87 | struct workqueue_struct *kacpi_hotplug_wq; |
88 | EXPORT_SYMBOL(kacpi_hotplug_wq); | |
1da177e4 | 89 | |
620242ae MS |
90 | /* |
91 | * This list of permanent mappings is for memory that may be accessed from | |
92 | * interrupt context, where we can't do the ioremap(). | |
93 | */ | |
94 | struct acpi_ioremap { | |
95 | struct list_head list; | |
96 | void __iomem *virt; | |
97 | acpi_physical_address phys; | |
98 | acpi_size size; | |
b7c1fadd | 99 | unsigned long refcount; |
620242ae MS |
100 | }; |
101 | ||
102 | static LIST_HEAD(acpi_ioremaps); | |
7bbb8903 | 103 | static DEFINE_MUTEX(acpi_ioremap_lock); |
620242ae | 104 | |
b0ed7a91 | 105 | static void __init acpi_osi_setup_late(void); |
ae00d812 | 106 | |
d4b7dc49 | 107 | /* |
a6e0887f | 108 | * The story of _OSI(Linux) |
d4b7dc49 | 109 | * |
a6e0887f LB |
110 | * From pre-history through Linux-2.6.22, |
111 | * Linux responded TRUE upon a BIOS OSI(Linux) query. | |
d4b7dc49 | 112 | * |
a6e0887f LB |
113 | * Unfortunately, reference BIOS writers got wind of this |
114 | * and put OSI(Linux) in their example code, quickly exposing | |
115 | * this string as ill-conceived and opening the door to | |
116 | * an un-bounded number of BIOS incompatibilities. | |
d4b7dc49 | 117 | * |
a6e0887f LB |
118 | * For example, OSI(Linux) was used on resume to re-POST a |
119 | * video card on one system, because Linux at that time | |
120 | * could not do a speedy restore in its native driver. | |
121 | * But then upon gaining quick native restore capability, | |
122 | * Linux has no way to tell the BIOS to skip the time-consuming | |
123 | * POST -- putting Linux at a permanent performance disadvantage. | |
124 | * On another system, the BIOS writer used OSI(Linux) | |
125 | * to infer native OS support for IPMI! On other systems, | |
126 | * OSI(Linux) simply got in the way of Linux claiming to | |
127 | * be compatible with other operating systems, exposing | |
128 | * BIOS issues such as skipped device initialization. | |
d4b7dc49 | 129 | * |
a6e0887f LB |
130 | * So "Linux" turned out to be a really poor chose of |
131 | * OSI string, and from Linux-2.6.23 onward we respond FALSE. | |
d4b7dc49 LB |
132 | * |
133 | * BIOS writers should NOT query _OSI(Linux) on future systems. | |
a6e0887f LB |
134 | * Linux will complain on the console when it sees it, and return FALSE. |
135 | * To get Linux to return TRUE for your system will require | |
136 | * a kernel source update to add a DMI entry, | |
137 | * or boot with "acpi_osi=Linux" | |
d4b7dc49 | 138 | */ |
d4b7dc49 | 139 | |
1d15d84e | 140 | static struct osi_linux { |
d4b7dc49 LB |
141 | unsigned int enable:1; |
142 | unsigned int dmi:1; | |
143 | unsigned int cmdline:1; | |
d90aa92c | 144 | } osi_linux = {0, 0, 0}; |
f507654d | 145 | |
b0ed7a91 LM |
146 | static u32 acpi_osi_handler(acpi_string interface, u32 supported) |
147 | { | |
148 | if (!strcmp("Linux", interface)) { | |
149 | ||
8997621b | 150 | printk_once(KERN_NOTICE FW_BUG PREFIX |
b0ed7a91 LM |
151 | "BIOS _OSI(Linux) query %s%s\n", |
152 | osi_linux.enable ? "honored" : "ignored", | |
153 | osi_linux.cmdline ? " via cmdline" : | |
154 | osi_linux.dmi ? " via DMI" : ""); | |
155 | } | |
156 | ||
157 | return supported; | |
158 | } | |
159 | ||
bc9ffce2 | 160 | static void __init acpi_request_region (struct acpi_generic_address *gas, |
9a47cdb1 BH |
161 | unsigned int length, char *desc) |
162 | { | |
bc9ffce2 MS |
163 | u64 addr; |
164 | ||
165 | /* Handle possible alignment issues */ | |
166 | memcpy(&addr, &gas->address, sizeof(addr)); | |
167 | if (!addr || !length) | |
9a47cdb1 BH |
168 | return; |
169 | ||
cfa806f0 | 170 | /* Resources are never freed */ |
bc9ffce2 MS |
171 | if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
172 | request_region(addr, length, desc); | |
173 | else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) | |
174 | request_mem_region(addr, length, desc); | |
9a47cdb1 BH |
175 | } |
176 | ||
177 | static int __init acpi_reserve_resources(void) | |
178 | { | |
eee3c859 | 179 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
180 | "ACPI PM1a_EVT_BLK"); |
181 | ||
eee3c859 | 182 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
183 | "ACPI PM1b_EVT_BLK"); |
184 | ||
eee3c859 | 185 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
186 | "ACPI PM1a_CNT_BLK"); |
187 | ||
eee3c859 | 188 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
189 | "ACPI PM1b_CNT_BLK"); |
190 | ||
eee3c859 LB |
191 | if (acpi_gbl_FADT.pm_timer_length == 4) |
192 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 193 | |
eee3c859 | 194 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
195 | "ACPI PM2_CNT_BLK"); |
196 | ||
197 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
198 | ||
eee3c859 LB |
199 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
200 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
201 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 202 | |
eee3c859 LB |
203 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
204 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
205 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
206 | |
207 | return 0; | |
208 | } | |
209 | device_initcall(acpi_reserve_resources); | |
210 | ||
4be44fcd | 211 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
212 | { |
213 | va_list args; | |
214 | va_start(args, fmt); | |
215 | acpi_os_vprintf(fmt, args); | |
216 | va_end(args); | |
217 | } | |
4be44fcd | 218 | |
4be44fcd | 219 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
220 | { |
221 | static char buffer[512]; | |
4be44fcd | 222 | |
1da177e4 LT |
223 | vsprintf(buffer, fmt, args); |
224 | ||
225 | #ifdef ENABLE_DEBUGGER | |
226 | if (acpi_in_debugger) { | |
227 | kdb_printf("%s", buffer); | |
228 | } else { | |
4d939155 | 229 | printk(KERN_CONT "%s", buffer); |
1da177e4 LT |
230 | } |
231 | #else | |
4d939155 | 232 | printk(KERN_CONT "%s", buffer); |
1da177e4 LT |
233 | #endif |
234 | } | |
235 | ||
4996c023 TI |
236 | #ifdef CONFIG_KEXEC |
237 | static unsigned long acpi_rsdp; | |
238 | static int __init setup_acpi_rsdp(char *arg) | |
239 | { | |
240 | acpi_rsdp = simple_strtoul(arg, NULL, 16); | |
241 | return 0; | |
242 | } | |
243 | early_param("acpi_rsdp", setup_acpi_rsdp); | |
244 | #endif | |
245 | ||
ad71860a | 246 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 | 247 | { |
4996c023 TI |
248 | #ifdef CONFIG_KEXEC |
249 | if (acpi_rsdp) | |
250 | return acpi_rsdp; | |
251 | #endif | |
252 | ||
1da177e4 | 253 | if (efi_enabled) { |
b2c99e3c | 254 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 255 | return efi.acpi20; |
b2c99e3c | 256 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 257 | return efi.acpi; |
1da177e4 | 258 | else { |
4be44fcd LB |
259 | printk(KERN_ERR PREFIX |
260 | "System description tables not found\n"); | |
ad71860a | 261 | return 0; |
1da177e4 | 262 | } |
239665a3 LB |
263 | } else { |
264 | acpi_physical_address pa = 0; | |
265 | ||
266 | acpi_find_root_pointer(&pa); | |
267 | return pa; | |
268 | } | |
1da177e4 LT |
269 | } |
270 | ||
78cdb3ed | 271 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
4a3cba5e MS |
272 | static struct acpi_ioremap * |
273 | acpi_map_lookup(acpi_physical_address phys, acpi_size size) | |
620242ae MS |
274 | { |
275 | struct acpi_ioremap *map; | |
276 | ||
78cdb3ed | 277 | list_for_each_entry_rcu(map, &acpi_ioremaps, list) |
620242ae MS |
278 | if (map->phys <= phys && |
279 | phys + size <= map->phys + map->size) | |
4a3cba5e MS |
280 | return map; |
281 | ||
282 | return NULL; | |
283 | } | |
284 | ||
285 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ | |
286 | static void __iomem * | |
287 | acpi_map_vaddr_lookup(acpi_physical_address phys, unsigned int size) | |
288 | { | |
289 | struct acpi_ioremap *map; | |
290 | ||
291 | map = acpi_map_lookup(phys, size); | |
292 | if (map) | |
293 | return map->virt + (phys - map->phys); | |
620242ae MS |
294 | |
295 | return NULL; | |
296 | } | |
297 | ||
13606a2d RW |
298 | void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size) |
299 | { | |
300 | struct acpi_ioremap *map; | |
301 | void __iomem *virt = NULL; | |
302 | ||
303 | mutex_lock(&acpi_ioremap_lock); | |
304 | map = acpi_map_lookup(phys, size); | |
305 | if (map) { | |
306 | virt = map->virt + (phys - map->phys); | |
307 | map->refcount++; | |
308 | } | |
309 | mutex_unlock(&acpi_ioremap_lock); | |
310 | return virt; | |
311 | } | |
312 | EXPORT_SYMBOL_GPL(acpi_os_get_iomem); | |
313 | ||
78cdb3ed | 314 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
620242ae MS |
315 | static struct acpi_ioremap * |
316 | acpi_map_lookup_virt(void __iomem *virt, acpi_size size) | |
317 | { | |
318 | struct acpi_ioremap *map; | |
319 | ||
78cdb3ed | 320 | list_for_each_entry_rcu(map, &acpi_ioremaps, list) |
4a3cba5e MS |
321 | if (map->virt <= virt && |
322 | virt + size <= map->virt + map->size) | |
620242ae MS |
323 | return map; |
324 | ||
325 | return NULL; | |
326 | } | |
327 | ||
ba242d5b MS |
328 | #ifndef CONFIG_IA64 |
329 | #define should_use_kmap(pfn) page_is_ram(pfn) | |
330 | #else | |
331 | /* ioremap will take care of cache attributes */ | |
332 | #define should_use_kmap(pfn) 0 | |
333 | #endif | |
334 | ||
335 | static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz) | |
336 | { | |
337 | unsigned long pfn; | |
338 | ||
339 | pfn = pg_off >> PAGE_SHIFT; | |
340 | if (should_use_kmap(pfn)) { | |
341 | if (pg_sz > PAGE_SIZE) | |
342 | return NULL; | |
343 | return (void __iomem __force *)kmap(pfn_to_page(pfn)); | |
344 | } else | |
345 | return acpi_os_ioremap(pg_off, pg_sz); | |
346 | } | |
347 | ||
348 | static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr) | |
349 | { | |
350 | unsigned long pfn; | |
351 | ||
352 | pfn = pg_off >> PAGE_SHIFT; | |
e252675f | 353 | if (should_use_kmap(pfn)) |
ba242d5b MS |
354 | kunmap(pfn_to_page(pfn)); |
355 | else | |
356 | iounmap(vaddr); | |
357 | } | |
358 | ||
2fdf0741 JB |
359 | void __iomem *__init_refok |
360 | acpi_os_map_memory(acpi_physical_address phys, acpi_size size) | |
1da177e4 | 361 | { |
7ffd0443 | 362 | struct acpi_ioremap *map; |
620242ae | 363 | void __iomem *virt; |
2d6d9fd3 RW |
364 | acpi_physical_address pg_off; |
365 | acpi_size pg_sz; | |
620242ae | 366 | |
9f4fd61f BH |
367 | if (phys > ULONG_MAX) { |
368 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 369 | return NULL; |
1da177e4 | 370 | } |
620242ae MS |
371 | |
372 | if (!acpi_gbl_permanent_mmap) | |
ad71860a | 373 | return __acpi_map_table((unsigned long)phys, size); |
620242ae | 374 | |
7ffd0443 RW |
375 | mutex_lock(&acpi_ioremap_lock); |
376 | /* Check if there's a suitable mapping already. */ | |
377 | map = acpi_map_lookup(phys, size); | |
378 | if (map) { | |
b7c1fadd | 379 | map->refcount++; |
7ffd0443 RW |
380 | goto out; |
381 | } | |
382 | ||
620242ae | 383 | map = kzalloc(sizeof(*map), GFP_KERNEL); |
7ffd0443 RW |
384 | if (!map) { |
385 | mutex_unlock(&acpi_ioremap_lock); | |
620242ae | 386 | return NULL; |
7ffd0443 | 387 | } |
620242ae | 388 | |
4a3cba5e MS |
389 | pg_off = round_down(phys, PAGE_SIZE); |
390 | pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off; | |
ba242d5b | 391 | virt = acpi_map(pg_off, pg_sz); |
620242ae | 392 | if (!virt) { |
7ffd0443 | 393 | mutex_unlock(&acpi_ioremap_lock); |
620242ae MS |
394 | kfree(map); |
395 | return NULL; | |
396 | } | |
397 | ||
398 | INIT_LIST_HEAD(&map->list); | |
399 | map->virt = virt; | |
4a3cba5e MS |
400 | map->phys = pg_off; |
401 | map->size = pg_sz; | |
b7c1fadd | 402 | map->refcount = 1; |
620242ae | 403 | |
78cdb3ed | 404 | list_add_tail_rcu(&map->list, &acpi_ioremaps); |
620242ae | 405 | |
7ffd0443 RW |
406 | out: |
407 | mutex_unlock(&acpi_ioremap_lock); | |
4a3cba5e | 408 | return map->virt + (phys - map->phys); |
1da177e4 | 409 | } |
55a82ab3 | 410 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 411 | |
b7c1fadd | 412 | static void acpi_os_drop_map_ref(struct acpi_ioremap *map) |
4a3cba5e | 413 | { |
b7c1fadd RW |
414 | if (!--map->refcount) |
415 | list_del_rcu(&map->list); | |
4a3cba5e | 416 | } |
4a3cba5e | 417 | |
b7c1fadd | 418 | static void acpi_os_map_cleanup(struct acpi_ioremap *map) |
7fe135dc | 419 | { |
b7c1fadd RW |
420 | if (!map->refcount) { |
421 | synchronize_rcu(); | |
ba242d5b | 422 | acpi_unmap(map->phys, map->virt); |
b7c1fadd RW |
423 | kfree(map); |
424 | } | |
4a3cba5e MS |
425 | } |
426 | ||
0d3a9cf5 | 427 | void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
1da177e4 | 428 | { |
620242ae | 429 | struct acpi_ioremap *map; |
620242ae MS |
430 | |
431 | if (!acpi_gbl_permanent_mmap) { | |
7d97277b | 432 | __acpi_unmap_table(virt, size); |
620242ae MS |
433 | return; |
434 | } | |
435 | ||
7bbb8903 | 436 | mutex_lock(&acpi_ioremap_lock); |
620242ae MS |
437 | map = acpi_map_lookup_virt(virt, size); |
438 | if (!map) { | |
7bbb8903 | 439 | mutex_unlock(&acpi_ioremap_lock); |
7fe135dc | 440 | WARN(true, PREFIX "%s: bad address %p\n", __func__, virt); |
620242ae MS |
441 | return; |
442 | } | |
b7c1fadd | 443 | acpi_os_drop_map_ref(map); |
7bbb8903 | 444 | mutex_unlock(&acpi_ioremap_lock); |
620242ae | 445 | |
b7c1fadd | 446 | acpi_os_map_cleanup(map); |
1da177e4 | 447 | } |
55a82ab3 | 448 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 | 449 | |
0d3a9cf5 | 450 | void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
7d97277b YL |
451 | { |
452 | if (!acpi_gbl_permanent_mmap) | |
453 | __acpi_unmap_table(virt, size); | |
454 | } | |
455 | ||
6f68c91c | 456 | int acpi_os_map_generic_address(struct acpi_generic_address *gas) |
29718521 | 457 | { |
bc9ffce2 | 458 | u64 addr; |
29718521 MS |
459 | void __iomem *virt; |
460 | ||
bc9ffce2 | 461 | if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) |
29718521 MS |
462 | return 0; |
463 | ||
bc9ffce2 MS |
464 | /* Handle possible alignment issues */ |
465 | memcpy(&addr, &gas->address, sizeof(addr)); | |
466 | if (!addr || !gas->bit_width) | |
29718521 MS |
467 | return -EINVAL; |
468 | ||
bc9ffce2 | 469 | virt = acpi_os_map_memory(addr, gas->bit_width / 8); |
29718521 MS |
470 | if (!virt) |
471 | return -EIO; | |
472 | ||
473 | return 0; | |
474 | } | |
6f68c91c | 475 | EXPORT_SYMBOL(acpi_os_map_generic_address); |
29718521 | 476 | |
6f68c91c | 477 | void acpi_os_unmap_generic_address(struct acpi_generic_address *gas) |
29718521 | 478 | { |
bc9ffce2 | 479 | u64 addr; |
7fe135dc | 480 | struct acpi_ioremap *map; |
29718521 | 481 | |
bc9ffce2 | 482 | if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) |
29718521 MS |
483 | return; |
484 | ||
bc9ffce2 MS |
485 | /* Handle possible alignment issues */ |
486 | memcpy(&addr, &gas->address, sizeof(addr)); | |
487 | if (!addr || !gas->bit_width) | |
29718521 MS |
488 | return; |
489 | ||
7bbb8903 | 490 | mutex_lock(&acpi_ioremap_lock); |
bc9ffce2 | 491 | map = acpi_map_lookup(addr, gas->bit_width / 8); |
7fe135dc RW |
492 | if (!map) { |
493 | mutex_unlock(&acpi_ioremap_lock); | |
494 | return; | |
495 | } | |
b7c1fadd | 496 | acpi_os_drop_map_ref(map); |
7bbb8903 | 497 | mutex_unlock(&acpi_ioremap_lock); |
29718521 | 498 | |
b7c1fadd | 499 | acpi_os_map_cleanup(map); |
29718521 | 500 | } |
6f68c91c | 501 | EXPORT_SYMBOL(acpi_os_unmap_generic_address); |
29718521 | 502 | |
1da177e4 LT |
503 | #ifdef ACPI_FUTURE_USAGE |
504 | acpi_status | |
4be44fcd | 505 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 506 | { |
4be44fcd | 507 | if (!phys || !virt) |
1da177e4 LT |
508 | return AE_BAD_PARAMETER; |
509 | ||
510 | *phys = virt_to_phys(virt); | |
511 | ||
512 | return AE_OK; | |
513 | } | |
514 | #endif | |
515 | ||
516 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
517 | ||
518 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
519 | ||
520 | acpi_status | |
4be44fcd LB |
521 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
522 | acpi_string * new_val) | |
1da177e4 LT |
523 | { |
524 | if (!init_val || !new_val) | |
525 | return AE_BAD_PARAMETER; | |
526 | ||
527 | *new_val = NULL; | |
4be44fcd | 528 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 529 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 530 | acpi_os_name); |
1da177e4 LT |
531 | *new_val = acpi_os_name; |
532 | } | |
533 | ||
534 | return AE_OK; | |
535 | } | |
536 | ||
537 | acpi_status | |
4be44fcd LB |
538 | acpi_os_table_override(struct acpi_table_header * existing_table, |
539 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
540 | { |
541 | if (!existing_table || !new_table) | |
542 | return AE_BAD_PARAMETER; | |
543 | ||
71fc47a9 MG |
544 | *new_table = NULL; |
545 | ||
1da177e4 LT |
546 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
547 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 548 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 | 549 | #endif |
6ed31e92 ÉP |
550 | if (*new_table != NULL) { |
551 | printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], " | |
552 | "this is unsafe: tainting kernel\n", | |
553 | existing_table->signature, | |
554 | existing_table->oem_table_id); | |
555 | add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); | |
556 | } | |
1da177e4 LT |
557 | return AE_OK; |
558 | } | |
559 | ||
f7b004a1 BM |
560 | acpi_status |
561 | acpi_os_physical_table_override(struct acpi_table_header *existing_table, | |
562 | acpi_physical_address * new_address, | |
563 | u32 *new_table_length) | |
564 | { | |
565 | return AE_SUPPORT; | |
566 | } | |
567 | ||
568 | ||
7d12e780 | 569 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 570 | { |
5229e87d LB |
571 | u32 handled; |
572 | ||
573 | handled = (*acpi_irq_handler) (acpi_irq_context); | |
574 | ||
575 | if (handled) { | |
576 | acpi_irq_handled++; | |
577 | return IRQ_HANDLED; | |
88bea188 LB |
578 | } else { |
579 | acpi_irq_not_handled++; | |
5229e87d | 580 | return IRQ_NONE; |
88bea188 | 581 | } |
1da177e4 LT |
582 | } |
583 | ||
584 | acpi_status | |
4be44fcd LB |
585 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
586 | void *context) | |
1da177e4 LT |
587 | { |
588 | unsigned int irq; | |
589 | ||
5229e87d LB |
590 | acpi_irq_stats_init(); |
591 | ||
1da177e4 | 592 | /* |
23fe3630 RW |
593 | * ACPI interrupts different from the SCI in our copy of the FADT are |
594 | * not supported. | |
1da177e4 | 595 | */ |
23fe3630 RW |
596 | if (gsi != acpi_gbl_FADT.sci_interrupt) |
597 | return AE_BAD_PARAMETER; | |
598 | ||
599 | if (acpi_irq_handler) | |
600 | return AE_ALREADY_ACQUIRED; | |
601 | ||
1da177e4 LT |
602 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
603 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
604 | gsi); | |
605 | return AE_OK; | |
606 | } | |
607 | ||
608 | acpi_irq_handler = handler; | |
609 | acpi_irq_context = context; | |
6fe0d062 AK |
610 | if (request_threaded_irq(irq, NULL, acpi_irq, IRQF_SHARED, "acpi", |
611 | acpi_irq)) { | |
1da177e4 | 612 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
23fe3630 | 613 | acpi_irq_handler = NULL; |
1da177e4 LT |
614 | return AE_NOT_ACQUIRED; |
615 | } | |
1da177e4 LT |
616 | |
617 | return AE_OK; | |
618 | } | |
619 | ||
4be44fcd | 620 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 | 621 | { |
23fe3630 RW |
622 | if (irq != acpi_gbl_FADT.sci_interrupt) |
623 | return AE_BAD_PARAMETER; | |
624 | ||
625 | free_irq(irq, acpi_irq); | |
626 | acpi_irq_handler = NULL; | |
1da177e4 LT |
627 | |
628 | return AE_OK; | |
629 | } | |
630 | ||
631 | /* | |
632 | * Running in interpreter thread context, safe to sleep | |
633 | */ | |
634 | ||
439913ff | 635 | void acpi_os_sleep(u64 ms) |
1da177e4 | 636 | { |
01a527ec | 637 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 638 | } |
4be44fcd | 639 | |
4be44fcd | 640 | void acpi_os_stall(u32 us) |
1da177e4 LT |
641 | { |
642 | while (us) { | |
643 | u32 delay = 1000; | |
644 | ||
645 | if (delay > us) | |
646 | delay = us; | |
647 | udelay(delay); | |
648 | touch_nmi_watchdog(); | |
649 | us -= delay; | |
650 | } | |
651 | } | |
4be44fcd | 652 | |
1da177e4 LT |
653 | /* |
654 | * Support ACPI 3.0 AML Timer operand | |
655 | * Returns 64-bit free-running, monotonically increasing timer | |
656 | * with 100ns granularity | |
657 | */ | |
4be44fcd | 658 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
659 | { |
660 | static u64 t; | |
661 | ||
662 | #ifdef CONFIG_HPET | |
663 | /* TBD: use HPET if available */ | |
664 | #endif | |
665 | ||
666 | #ifdef CONFIG_X86_PM_TIMER | |
667 | /* TBD: default to PM timer if HPET was not available */ | |
668 | #endif | |
669 | if (!t) | |
670 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
671 | ||
672 | return ++t; | |
673 | } | |
674 | ||
4be44fcd | 675 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
676 | { |
677 | u32 dummy; | |
678 | ||
679 | if (!value) | |
680 | value = &dummy; | |
681 | ||
49fbabf5 ZY |
682 | *value = 0; |
683 | if (width <= 8) { | |
4be44fcd | 684 | *(u8 *) value = inb(port); |
49fbabf5 | 685 | } else if (width <= 16) { |
4be44fcd | 686 | *(u16 *) value = inw(port); |
49fbabf5 | 687 | } else if (width <= 32) { |
4be44fcd | 688 | *(u32 *) value = inl(port); |
49fbabf5 | 689 | } else { |
1da177e4 LT |
690 | BUG(); |
691 | } | |
692 | ||
693 | return AE_OK; | |
694 | } | |
4be44fcd | 695 | |
1da177e4 LT |
696 | EXPORT_SYMBOL(acpi_os_read_port); |
697 | ||
4be44fcd | 698 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 699 | { |
49fbabf5 | 700 | if (width <= 8) { |
1da177e4 | 701 | outb(value, port); |
49fbabf5 | 702 | } else if (width <= 16) { |
1da177e4 | 703 | outw(value, port); |
49fbabf5 | 704 | } else if (width <= 32) { |
1da177e4 | 705 | outl(value, port); |
49fbabf5 | 706 | } else { |
1da177e4 LT |
707 | BUG(); |
708 | } | |
709 | ||
710 | return AE_OK; | |
711 | } | |
4be44fcd | 712 | |
1da177e4 LT |
713 | EXPORT_SYMBOL(acpi_os_write_port); |
714 | ||
e615bf5b MS |
715 | #ifdef readq |
716 | static inline u64 read64(const volatile void __iomem *addr) | |
717 | { | |
718 | return readq(addr); | |
719 | } | |
720 | #else | |
721 | static inline u64 read64(const volatile void __iomem *addr) | |
722 | { | |
723 | u64 l, h; | |
724 | l = readl(addr); | |
725 | h = readl(addr+4); | |
726 | return l | (h << 32); | |
727 | } | |
728 | #endif | |
729 | ||
730 | acpi_status | |
653f4b53 | 731 | acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width) |
e615bf5b MS |
732 | { |
733 | void __iomem *virt_addr; | |
734 | unsigned int size = width / 8; | |
735 | bool unmap = false; | |
736 | u64 dummy; | |
737 | ||
738 | rcu_read_lock(); | |
739 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); | |
740 | if (!virt_addr) { | |
741 | rcu_read_unlock(); | |
742 | virt_addr = acpi_os_ioremap(phys_addr, size); | |
743 | if (!virt_addr) | |
744 | return AE_BAD_ADDRESS; | |
745 | unmap = true; | |
746 | } | |
747 | ||
748 | if (!value) | |
749 | value = &dummy; | |
750 | ||
751 | switch (width) { | |
752 | case 8: | |
753 | *(u8 *) value = readb(virt_addr); | |
754 | break; | |
755 | case 16: | |
756 | *(u16 *) value = readw(virt_addr); | |
757 | break; | |
758 | case 32: | |
759 | *(u32 *) value = readl(virt_addr); | |
760 | break; | |
761 | case 64: | |
762 | *(u64 *) value = read64(virt_addr); | |
763 | break; | |
764 | default: | |
765 | BUG(); | |
766 | } | |
767 | ||
768 | if (unmap) | |
769 | iounmap(virt_addr); | |
770 | else | |
771 | rcu_read_unlock(); | |
772 | ||
773 | return AE_OK; | |
774 | } | |
775 | ||
e615bf5b MS |
776 | #ifdef writeq |
777 | static inline void write64(u64 val, volatile void __iomem *addr) | |
778 | { | |
779 | writeq(val, addr); | |
780 | } | |
781 | #else | |
782 | static inline void write64(u64 val, volatile void __iomem *addr) | |
783 | { | |
784 | writel(val, addr); | |
785 | writel(val>>32, addr+4); | |
786 | } | |
787 | #endif | |
788 | ||
789 | acpi_status | |
653f4b53 | 790 | acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width) |
e615bf5b MS |
791 | { |
792 | void __iomem *virt_addr; | |
793 | unsigned int size = width / 8; | |
794 | bool unmap = false; | |
795 | ||
796 | rcu_read_lock(); | |
797 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); | |
798 | if (!virt_addr) { | |
799 | rcu_read_unlock(); | |
800 | virt_addr = acpi_os_ioremap(phys_addr, size); | |
801 | if (!virt_addr) | |
802 | return AE_BAD_ADDRESS; | |
803 | unmap = true; | |
804 | } | |
805 | ||
806 | switch (width) { | |
807 | case 8: | |
808 | writeb(value, virt_addr); | |
809 | break; | |
810 | case 16: | |
811 | writew(value, virt_addr); | |
812 | break; | |
813 | case 32: | |
814 | writel(value, virt_addr); | |
815 | break; | |
816 | case 64: | |
817 | write64(value, virt_addr); | |
818 | break; | |
819 | default: | |
820 | BUG(); | |
821 | } | |
822 | ||
823 | if (unmap) | |
824 | iounmap(virt_addr); | |
825 | else | |
826 | rcu_read_unlock(); | |
827 | ||
828 | return AE_OK; | |
829 | } | |
830 | ||
1da177e4 | 831 | acpi_status |
4be44fcd | 832 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
c5f0231e | 833 | u64 *value, u32 width) |
1da177e4 LT |
834 | { |
835 | int result, size; | |
c5f0231e | 836 | u32 value32; |
1da177e4 LT |
837 | |
838 | if (!value) | |
839 | return AE_BAD_PARAMETER; | |
840 | ||
841 | switch (width) { | |
842 | case 8: | |
843 | size = 1; | |
844 | break; | |
845 | case 16: | |
846 | size = 2; | |
847 | break; | |
848 | case 32: | |
849 | size = 4; | |
850 | break; | |
851 | default: | |
852 | return AE_ERROR; | |
853 | } | |
854 | ||
b6ce068a MW |
855 | result = raw_pci_read(pci_id->segment, pci_id->bus, |
856 | PCI_DEVFN(pci_id->device, pci_id->function), | |
c5f0231e BM |
857 | reg, size, &value32); |
858 | *value = value32; | |
1da177e4 LT |
859 | |
860 | return (result ? AE_ERROR : AE_OK); | |
861 | } | |
4be44fcd | 862 | |
1da177e4 | 863 | acpi_status |
4be44fcd | 864 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
439913ff | 865 | u64 value, u32 width) |
1da177e4 LT |
866 | { |
867 | int result, size; | |
868 | ||
869 | switch (width) { | |
870 | case 8: | |
871 | size = 1; | |
872 | break; | |
873 | case 16: | |
874 | size = 2; | |
875 | break; | |
876 | case 32: | |
877 | size = 4; | |
878 | break; | |
879 | default: | |
880 | return AE_ERROR; | |
881 | } | |
882 | ||
b6ce068a MW |
883 | result = raw_pci_write(pci_id->segment, pci_id->bus, |
884 | PCI_DEVFN(pci_id->device, pci_id->function), | |
885 | reg, size, value); | |
1da177e4 LT |
886 | |
887 | return (result ? AE_ERROR : AE_OK); | |
888 | } | |
889 | ||
65f27f38 | 890 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
891 | { |
892 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
88db5e14 | 893 | |
9ac61856 BH |
894 | if (dpc->wait) |
895 | acpi_os_wait_events_complete(NULL); | |
19cd847a ZR |
896 | |
897 | dpc->function(dpc->context); | |
898 | kfree(dpc); | |
19cd847a ZR |
899 | } |
900 | ||
b8d35192 AS |
901 | /******************************************************************************* |
902 | * | |
903 | * FUNCTION: acpi_os_execute | |
904 | * | |
905 | * PARAMETERS: Type - Type of the callback | |
906 | * Function - Function to be executed | |
907 | * Context - Function parameters | |
908 | * | |
909 | * RETURN: Status | |
910 | * | |
911 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
912 | * immediately executes function on a separate thread. | |
913 | * | |
914 | ******************************************************************************/ | |
915 | ||
19cd847a ZR |
916 | static acpi_status __acpi_os_execute(acpi_execute_type type, |
917 | acpi_osd_exec_callback function, void *context, int hp) | |
1da177e4 | 918 | { |
4be44fcd LB |
919 | acpi_status status = AE_OK; |
920 | struct acpi_os_dpc *dpc; | |
17bc54ee | 921 | struct workqueue_struct *queue; |
19cd847a | 922 | int ret; |
72945b2b LB |
923 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
924 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
925 | function, context)); | |
1da177e4 | 926 | |
1da177e4 LT |
927 | /* |
928 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 929 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
930 | * way that allows us to also free its memory inside the callee. |
931 | * Because we may want to schedule several tasks with different | |
932 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 933 | * having a static work_struct. |
1da177e4 | 934 | */ |
72945b2b | 935 | |
65f27f38 | 936 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 937 | if (!dpc) |
889c78be | 938 | return AE_NO_MEMORY; |
b976fe19 | 939 | |
1da177e4 LT |
940 | dpc->function = function; |
941 | dpc->context = context; | |
b976fe19 | 942 | |
c02256be ZR |
943 | /* |
944 | * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq | |
945 | * because the hotplug code may call driver .remove() functions, | |
946 | * which invoke flush_scheduled_work/acpi_os_wait_events_complete | |
947 | * to flush these workqueues. | |
948 | */ | |
949 | queue = hp ? kacpi_hotplug_wq : | |
950 | (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq); | |
9ac61856 | 951 | dpc->wait = hp ? 1 : 0; |
bc73675b ZR |
952 | |
953 | if (queue == kacpi_hotplug_wq) | |
954 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
955 | else if (queue == kacpi_notify_wq) | |
956 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
957 | else | |
958 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
959 | ||
8fec62b2 TH |
960 | /* |
961 | * On some machines, a software-initiated SMI causes corruption unless | |
962 | * the SMI runs on CPU 0. An SMI can be initiated by any AML, but | |
963 | * typically it's done in GPE-related methods that are run via | |
964 | * workqueues, so we can avoid the known corruption cases by always | |
965 | * queueing on CPU 0. | |
966 | */ | |
967 | ret = queue_work_on(0, queue, &dpc->work); | |
19cd847a ZR |
968 | |
969 | if (!ret) { | |
55ac9a01 LM |
970 | printk(KERN_ERR PREFIX |
971 | "Call to queue_work() failed.\n"); | |
17bc54ee AS |
972 | status = AE_ERROR; |
973 | kfree(dpc); | |
1da177e4 | 974 | } |
889c78be | 975 | return status; |
1da177e4 | 976 | } |
4be44fcd | 977 | |
19cd847a ZR |
978 | acpi_status acpi_os_execute(acpi_execute_type type, |
979 | acpi_osd_exec_callback function, void *context) | |
980 | { | |
981 | return __acpi_os_execute(type, function, context, 0); | |
982 | } | |
b8d35192 | 983 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 984 | |
19cd847a ZR |
985 | acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function, |
986 | void *context) | |
987 | { | |
988 | return __acpi_os_execute(0, function, context, 1); | |
989 | } | |
990 | ||
4be44fcd | 991 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
992 | { |
993 | flush_workqueue(kacpid_wq); | |
2f67a069 | 994 | flush_workqueue(kacpi_notify_wq); |
1da177e4 | 995 | } |
4be44fcd | 996 | |
1da177e4 LT |
997 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
998 | ||
1da177e4 | 999 | acpi_status |
4be44fcd | 1000 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 1001 | { |
4be44fcd | 1002 | struct semaphore *sem = NULL; |
1da177e4 | 1003 | |
1da177e4 LT |
1004 | sem = acpi_os_allocate(sizeof(struct semaphore)); |
1005 | if (!sem) | |
d550d98d | 1006 | return AE_NO_MEMORY; |
1da177e4 LT |
1007 | memset(sem, 0, sizeof(struct semaphore)); |
1008 | ||
1009 | sema_init(sem, initial_units); | |
1010 | ||
4be44fcd | 1011 | *handle = (acpi_handle *) sem; |
1da177e4 | 1012 | |
4be44fcd LB |
1013 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
1014 | *handle, initial_units)); | |
1da177e4 | 1015 | |
d550d98d | 1016 | return AE_OK; |
1da177e4 | 1017 | } |
1da177e4 | 1018 | |
1da177e4 LT |
1019 | /* |
1020 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
1021 | * 'delete_semaphore()' function -- may result in an invalid | |
1022 | * pointer dereference for non-synchronized consumers. Should | |
1023 | * we at least check for blocked threads and signal/cancel them? | |
1024 | */ | |
1025 | ||
4be44fcd | 1026 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 1027 | { |
4be44fcd | 1028 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 1029 | |
1da177e4 | 1030 | if (!sem) |
d550d98d | 1031 | return AE_BAD_PARAMETER; |
1da177e4 | 1032 | |
4be44fcd | 1033 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 1034 | |
f1241c87 | 1035 | BUG_ON(!list_empty(&sem->wait_list)); |
02438d87 | 1036 | kfree(sem); |
4be44fcd | 1037 | sem = NULL; |
1da177e4 | 1038 | |
d550d98d | 1039 | return AE_OK; |
1da177e4 | 1040 | } |
1da177e4 | 1041 | |
1da177e4 | 1042 | /* |
1da177e4 LT |
1043 | * TODO: Support for units > 1? |
1044 | */ | |
4be44fcd | 1045 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 1046 | { |
4be44fcd LB |
1047 | acpi_status status = AE_OK; |
1048 | struct semaphore *sem = (struct semaphore *)handle; | |
f1241c87 | 1049 | long jiffies; |
4be44fcd | 1050 | int ret = 0; |
1da177e4 | 1051 | |
1da177e4 | 1052 | if (!sem || (units < 1)) |
d550d98d | 1053 | return AE_BAD_PARAMETER; |
1da177e4 LT |
1054 | |
1055 | if (units > 1) | |
d550d98d | 1056 | return AE_SUPPORT; |
1da177e4 | 1057 | |
4be44fcd LB |
1058 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
1059 | handle, units, timeout)); | |
1da177e4 | 1060 | |
f1241c87 MW |
1061 | if (timeout == ACPI_WAIT_FOREVER) |
1062 | jiffies = MAX_SCHEDULE_TIMEOUT; | |
1063 | else | |
1064 | jiffies = msecs_to_jiffies(timeout); | |
1065 | ||
1066 | ret = down_timeout(sem, jiffies); | |
1067 | if (ret) | |
1068 | status = AE_TIME; | |
1da177e4 LT |
1069 | |
1070 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 1071 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 1072 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
1073 | handle, units, timeout, |
1074 | acpi_format_exception(status))); | |
1075 | } else { | |
1076 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 1077 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 1078 | units, timeout)); |
1da177e4 LT |
1079 | } |
1080 | ||
d550d98d | 1081 | return status; |
1da177e4 | 1082 | } |
1da177e4 | 1083 | |
1da177e4 LT |
1084 | /* |
1085 | * TODO: Support for units > 1? | |
1086 | */ | |
4be44fcd | 1087 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 1088 | { |
4be44fcd | 1089 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 1090 | |
1da177e4 | 1091 | if (!sem || (units < 1)) |
d550d98d | 1092 | return AE_BAD_PARAMETER; |
1da177e4 LT |
1093 | |
1094 | if (units > 1) | |
d550d98d | 1095 | return AE_SUPPORT; |
1da177e4 | 1096 | |
4be44fcd LB |
1097 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
1098 | units)); | |
1da177e4 LT |
1099 | |
1100 | up(sem); | |
1101 | ||
d550d98d | 1102 | return AE_OK; |
1da177e4 | 1103 | } |
4be44fcd | 1104 | |
1da177e4 | 1105 | #ifdef ACPI_FUTURE_USAGE |
4be44fcd | 1106 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
1107 | { |
1108 | ||
1109 | #ifdef ENABLE_DEBUGGER | |
1110 | if (acpi_in_debugger) { | |
1111 | u32 chars; | |
1112 | ||
1113 | kdb_read(buffer, sizeof(line_buf)); | |
1114 | ||
1115 | /* remove the CR kdb includes */ | |
1116 | chars = strlen(buffer) - 1; | |
1117 | buffer[chars] = '\0'; | |
1118 | } | |
1119 | #endif | |
1120 | ||
1121 | return 0; | |
1122 | } | |
4be44fcd | 1123 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 1124 | |
4be44fcd | 1125 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 1126 | { |
4be44fcd | 1127 | switch (function) { |
1da177e4 LT |
1128 | case ACPI_SIGNAL_FATAL: |
1129 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
1130 | break; | |
1131 | case ACPI_SIGNAL_BREAKPOINT: | |
1132 | /* | |
1133 | * AML Breakpoint | |
1134 | * ACPI spec. says to treat it as a NOP unless | |
1135 | * you are debugging. So if/when we integrate | |
1136 | * AML debugger into the kernel debugger its | |
1137 | * hook will go here. But until then it is | |
1138 | * not useful to print anything on breakpoints. | |
1139 | */ | |
1140 | break; | |
1141 | default: | |
1142 | break; | |
1143 | } | |
1144 | ||
1145 | return AE_OK; | |
1146 | } | |
4be44fcd | 1147 | |
4be44fcd | 1148 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
1149 | { |
1150 | char *p = acpi_os_name; | |
4be44fcd | 1151 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
1152 | |
1153 | if (!str || !*str) | |
1154 | return 0; | |
1155 | ||
1156 | for (; count-- && str && *str; str++) { | |
1157 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
1158 | *p++ = *str; | |
1159 | else if (*str == '\'' || *str == '"') | |
1160 | continue; | |
1161 | else | |
1162 | break; | |
1163 | } | |
1164 | *p = 0; | |
1165 | ||
1166 | return 1; | |
4be44fcd | 1167 | |
1da177e4 LT |
1168 | } |
1169 | ||
1170 | __setup("acpi_os_name=", acpi_os_name_setup); | |
1171 | ||
12d32064 LM |
1172 | #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ |
1173 | #define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */ | |
1174 | ||
1175 | struct osi_setup_entry { | |
1176 | char string[OSI_STRING_LENGTH_MAX]; | |
1177 | bool enable; | |
1178 | }; | |
1179 | ||
aa165971 SL |
1180 | static struct osi_setup_entry __initdata |
1181 | osi_setup_entries[OSI_STRING_ENTRIES_MAX] = { | |
1182 | {"Module Device", true}, | |
1183 | {"Processor Device", true}, | |
1184 | {"3.0 _SCP Extensions", true}, | |
1185 | {"Processor Aggregator Device", true}, | |
1186 | }; | |
12d32064 | 1187 | |
d90aa92c LM |
1188 | void __init acpi_osi_setup(char *str) |
1189 | { | |
12d32064 LM |
1190 | struct osi_setup_entry *osi; |
1191 | bool enable = true; | |
1192 | int i; | |
1193 | ||
d90aa92c LM |
1194 | if (!acpi_gbl_create_osi_method) |
1195 | return; | |
1196 | ||
1197 | if (str == NULL || *str == '\0') { | |
1198 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
1199 | acpi_gbl_create_osi_method = FALSE; | |
12d32064 LM |
1200 | return; |
1201 | } | |
1202 | ||
1203 | if (*str == '!') { | |
1204 | str++; | |
1205 | enable = false; | |
1206 | } | |
1207 | ||
1208 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { | |
1209 | osi = &osi_setup_entries[i]; | |
1210 | if (!strcmp(osi->string, str)) { | |
1211 | osi->enable = enable; | |
1212 | break; | |
1213 | } else if (osi->string[0] == '\0') { | |
1214 | osi->enable = enable; | |
1215 | strncpy(osi->string, str, OSI_STRING_LENGTH_MAX); | |
1216 | break; | |
1217 | } | |
1218 | } | |
d90aa92c LM |
1219 | } |
1220 | ||
d4b7dc49 LB |
1221 | static void __init set_osi_linux(unsigned int enable) |
1222 | { | |
d90aa92c | 1223 | if (osi_linux.enable != enable) |
d4b7dc49 | 1224 | osi_linux.enable = enable; |
b0ed7a91 LM |
1225 | |
1226 | if (osi_linux.enable) | |
1227 | acpi_osi_setup("Linux"); | |
1228 | else | |
1229 | acpi_osi_setup("!Linux"); | |
1230 | ||
d4b7dc49 LB |
1231 | return; |
1232 | } | |
1233 | ||
1234 | static void __init acpi_cmdline_osi_linux(unsigned int enable) | |
1235 | { | |
d90aa92c LM |
1236 | osi_linux.cmdline = 1; /* cmdline set the default and override DMI */ |
1237 | osi_linux.dmi = 0; | |
d4b7dc49 LB |
1238 | set_osi_linux(enable); |
1239 | ||
1240 | return; | |
1241 | } | |
1242 | ||
1243 | void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) | |
1244 | { | |
d4b7dc49 LB |
1245 | printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); |
1246 | ||
1247 | if (enable == -1) | |
1248 | return; | |
1249 | ||
d90aa92c | 1250 | osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ |
d4b7dc49 | 1251 | set_osi_linux(enable); |
f507654d | 1252 | |
f507654d LB |
1253 | return; |
1254 | } | |
1255 | ||
1da177e4 | 1256 | /* |
ae00d812 LB |
1257 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
1258 | * | |
1da177e4 | 1259 | * empty string disables _OSI |
ae00d812 LB |
1260 | * string starting with '!' disables that string |
1261 | * otherwise string is added to list, augmenting built-in strings | |
1da177e4 | 1262 | */ |
b0ed7a91 | 1263 | static void __init acpi_osi_setup_late(void) |
1da177e4 | 1264 | { |
12d32064 LM |
1265 | struct osi_setup_entry *osi; |
1266 | char *str; | |
1267 | int i; | |
d90aa92c | 1268 | acpi_status status; |
b0ed7a91 | 1269 | |
12d32064 LM |
1270 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { |
1271 | osi = &osi_setup_entries[i]; | |
1272 | str = osi->string; | |
b0ed7a91 | 1273 | |
12d32064 LM |
1274 | if (*str == '\0') |
1275 | break; | |
1276 | if (osi->enable) { | |
1277 | status = acpi_install_interface(str); | |
d90aa92c | 1278 | |
12d32064 LM |
1279 | if (ACPI_SUCCESS(status)) |
1280 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); | |
1281 | } else { | |
1282 | status = acpi_remove_interface(str); | |
d90aa92c | 1283 | |
12d32064 LM |
1284 | if (ACPI_SUCCESS(status)) |
1285 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); | |
1286 | } | |
b0ed7a91 LM |
1287 | } |
1288 | } | |
1289 | ||
d90aa92c | 1290 | static int __init osi_setup(char *str) |
b0ed7a91 | 1291 | { |
d90aa92c LM |
1292 | if (str && !strcmp("Linux", str)) |
1293 | acpi_cmdline_osi_linux(1); | |
1294 | else if (str && !strcmp("!Linux", str)) | |
1295 | acpi_cmdline_osi_linux(0); | |
1296 | else | |
1297 | acpi_osi_setup(str); | |
1da177e4 LT |
1298 | |
1299 | return 1; | |
1300 | } | |
1301 | ||
d90aa92c | 1302 | __setup("acpi_osi=", osi_setup); |
1da177e4 LT |
1303 | |
1304 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 1305 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
1306 | { |
1307 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
1308 | ||
1309 | acpi_gbl_all_methods_serialized = TRUE; | |
1310 | ||
1311 | return 1; | |
1312 | } | |
1313 | ||
1314 | __setup("acpi_serialize", acpi_serialize_setup); | |
1315 | ||
df92e695 TR |
1316 | /* Check of resource interference between native drivers and ACPI |
1317 | * OperationRegions (SystemIO and System Memory only). | |
1318 | * IO ports and memory declared in ACPI might be used by the ACPI subsystem | |
1319 | * in arbitrary AML code and can interfere with legacy drivers. | |
1320 | * acpi_enforce_resources= can be set to: | |
1321 | * | |
7e90560c | 1322 | * - strict (default) (2) |
df92e695 | 1323 | * -> further driver trying to access the resources will not load |
7e90560c | 1324 | * - lax (1) |
df92e695 TR |
1325 | * -> further driver trying to access the resources will load, but you |
1326 | * get a system message that something might go wrong... | |
1327 | * | |
1328 | * - no (0) | |
1329 | * -> ACPI Operation Region resources will not be registered | |
1330 | * | |
1331 | */ | |
1332 | #define ENFORCE_RESOURCES_STRICT 2 | |
1333 | #define ENFORCE_RESOURCES_LAX 1 | |
1334 | #define ENFORCE_RESOURCES_NO 0 | |
1335 | ||
7e90560c | 1336 | static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; |
df92e695 TR |
1337 | |
1338 | static int __init acpi_enforce_resources_setup(char *str) | |
1339 | { | |
1340 | if (str == NULL || *str == '\0') | |
1341 | return 0; | |
1342 | ||
1343 | if (!strcmp("strict", str)) | |
1344 | acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; | |
1345 | else if (!strcmp("lax", str)) | |
1346 | acpi_enforce_resources = ENFORCE_RESOURCES_LAX; | |
1347 | else if (!strcmp("no", str)) | |
1348 | acpi_enforce_resources = ENFORCE_RESOURCES_NO; | |
1349 | ||
1350 | return 1; | |
1351 | } | |
1352 | ||
1353 | __setup("acpi_enforce_resources=", acpi_enforce_resources_setup); | |
1354 | ||
1355 | /* Check for resource conflicts between ACPI OperationRegions and native | |
1356 | * drivers */ | |
876fba43 | 1357 | int acpi_check_resource_conflict(const struct resource *res) |
df92e695 | 1358 | { |
f654c0fe LM |
1359 | acpi_adr_space_type space_id; |
1360 | acpi_size length; | |
1361 | u8 warn = 0; | |
1362 | int clash = 0; | |
df92e695 TR |
1363 | |
1364 | if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) | |
1365 | return 0; | |
1366 | if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM)) | |
1367 | return 0; | |
1368 | ||
f654c0fe LM |
1369 | if (res->flags & IORESOURCE_IO) |
1370 | space_id = ACPI_ADR_SPACE_SYSTEM_IO; | |
1371 | else | |
1372 | space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY; | |
df92e695 | 1373 | |
f654c0fe LM |
1374 | length = res->end - res->start + 1; |
1375 | if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) | |
1376 | warn = 1; | |
1377 | clash = acpi_check_address_range(space_id, res->start, length, warn); | |
df92e695 TR |
1378 | |
1379 | if (clash) { | |
1380 | if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) { | |
14f03343 JD |
1381 | if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) |
1382 | printk(KERN_NOTICE "ACPI: This conflict may" | |
1383 | " cause random problems and system" | |
1384 | " instability\n"); | |
1385 | printk(KERN_INFO "ACPI: If an ACPI driver is available" | |
1386 | " for this device, you should use it instead of" | |
1387 | " the native driver\n"); | |
df92e695 TR |
1388 | } |
1389 | if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT) | |
1390 | return -EBUSY; | |
1391 | } | |
1392 | return 0; | |
1393 | } | |
443dea72 | 1394 | EXPORT_SYMBOL(acpi_check_resource_conflict); |
df92e695 TR |
1395 | |
1396 | int acpi_check_region(resource_size_t start, resource_size_t n, | |
1397 | const char *name) | |
1398 | { | |
1399 | struct resource res = { | |
1400 | .start = start, | |
1401 | .end = start + n - 1, | |
1402 | .name = name, | |
1403 | .flags = IORESOURCE_IO, | |
1404 | }; | |
1405 | ||
1406 | return acpi_check_resource_conflict(&res); | |
1407 | } | |
1408 | EXPORT_SYMBOL(acpi_check_region); | |
1409 | ||
70dd6bea JD |
1410 | /* |
1411 | * Let drivers know whether the resource checks are effective | |
1412 | */ | |
1413 | int acpi_resources_are_enforced(void) | |
1414 | { | |
1415 | return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT; | |
1416 | } | |
1417 | EXPORT_SYMBOL(acpi_resources_are_enforced); | |
1418 | ||
9f63b88b LM |
1419 | /* |
1420 | * Deallocate the memory for a spinlock. | |
1421 | */ | |
1422 | void acpi_os_delete_lock(acpi_spinlock handle) | |
1423 | { | |
1424 | ACPI_FREE(handle); | |
1425 | } | |
1426 | ||
73459f73 RM |
1427 | /* |
1428 | * Acquire a spinlock. | |
1429 | * | |
1430 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1431 | */ |
1432 | ||
967440e3 | 1433 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1434 | { |
b8e4d893 | 1435 | acpi_cpu_flags flags; |
967440e3 | 1436 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1437 | return flags; |
1438 | } | |
1439 | ||
1440 | /* | |
1441 | * Release a spinlock. See above. | |
1442 | */ | |
1443 | ||
967440e3 | 1444 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1445 | { |
967440e3 | 1446 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1447 | } |
1448 | ||
73459f73 RM |
1449 | #ifndef ACPI_USE_LOCAL_CACHE |
1450 | ||
1451 | /******************************************************************************* | |
1452 | * | |
1453 | * FUNCTION: acpi_os_create_cache | |
1454 | * | |
b229cf92 BM |
1455 | * PARAMETERS: name - Ascii name for the cache |
1456 | * size - Size of each cached object | |
1457 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1458 | * cache - Where the new cache object is returned | |
73459f73 | 1459 | * |
b229cf92 | 1460 | * RETURN: status |
73459f73 RM |
1461 | * |
1462 | * DESCRIPTION: Create a cache object | |
1463 | * | |
1464 | ******************************************************************************/ | |
1465 | ||
1466 | acpi_status | |
4be44fcd | 1467 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1468 | { |
20c2df83 | 1469 | *cache = kmem_cache_create(name, size, 0, 0, NULL); |
a6fdbf90 | 1470 | if (*cache == NULL) |
b229cf92 BM |
1471 | return AE_ERROR; |
1472 | else | |
1473 | return AE_OK; | |
73459f73 RM |
1474 | } |
1475 | ||
1476 | /******************************************************************************* | |
1477 | * | |
1478 | * FUNCTION: acpi_os_purge_cache | |
1479 | * | |
1480 | * PARAMETERS: Cache - Handle to cache object | |
1481 | * | |
1482 | * RETURN: Status | |
1483 | * | |
1484 | * DESCRIPTION: Free all objects within the requested cache. | |
1485 | * | |
1486 | ******************************************************************************/ | |
1487 | ||
4be44fcd | 1488 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1489 | { |
50dd0969 | 1490 | kmem_cache_shrink(cache); |
4be44fcd | 1491 | return (AE_OK); |
73459f73 RM |
1492 | } |
1493 | ||
1494 | /******************************************************************************* | |
1495 | * | |
1496 | * FUNCTION: acpi_os_delete_cache | |
1497 | * | |
1498 | * PARAMETERS: Cache - Handle to cache object | |
1499 | * | |
1500 | * RETURN: Status | |
1501 | * | |
1502 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1503 | * cache object. | |
1504 | * | |
1505 | ******************************************************************************/ | |
1506 | ||
4be44fcd | 1507 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1508 | { |
1a1d92c1 | 1509 | kmem_cache_destroy(cache); |
4be44fcd | 1510 | return (AE_OK); |
73459f73 RM |
1511 | } |
1512 | ||
1513 | /******************************************************************************* | |
1514 | * | |
1515 | * FUNCTION: acpi_os_release_object | |
1516 | * | |
1517 | * PARAMETERS: Cache - Handle to cache object | |
1518 | * Object - The object to be released | |
1519 | * | |
1520 | * RETURN: None | |
1521 | * | |
1522 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1523 | * the object is deleted. | |
1524 | * | |
1525 | ******************************************************************************/ | |
1526 | ||
4be44fcd | 1527 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1528 | { |
4be44fcd LB |
1529 | kmem_cache_free(cache, object); |
1530 | return (AE_OK); | |
73459f73 | 1531 | } |
73459f73 | 1532 | #endif |
d362edaf MS |
1533 | |
1534 | acpi_status __init acpi_os_initialize(void) | |
1535 | { | |
1536 | acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block); | |
1537 | acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block); | |
1538 | acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block); | |
1539 | acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block); | |
1540 | ||
1541 | return AE_OK; | |
1542 | } | |
1543 | ||
32d47eef | 1544 | acpi_status __init acpi_os_initialize1(void) |
d362edaf | 1545 | { |
44d2588e TH |
1546 | kacpid_wq = alloc_workqueue("kacpid", 0, 1); |
1547 | kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1); | |
1548 | kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1); | |
d362edaf MS |
1549 | BUG_ON(!kacpid_wq); |
1550 | BUG_ON(!kacpi_notify_wq); | |
1551 | BUG_ON(!kacpi_hotplug_wq); | |
1bd64d42 LB |
1552 | acpi_install_interface_handler(acpi_osi_handler); |
1553 | acpi_osi_setup_late(); | |
d362edaf MS |
1554 | return AE_OK; |
1555 | } | |
1556 | ||
1557 | acpi_status acpi_os_terminate(void) | |
1558 | { | |
1559 | if (acpi_irq_handler) { | |
23fe3630 | 1560 | acpi_os_remove_interrupt_handler(acpi_gbl_FADT.sci_interrupt, |
d362edaf MS |
1561 | acpi_irq_handler); |
1562 | } | |
1563 | ||
1564 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block); | |
1565 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block); | |
1566 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block); | |
1567 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block); | |
1568 | ||
1569 | destroy_workqueue(kacpid_wq); | |
1570 | destroy_workqueue(kacpi_notify_wq); | |
1571 | destroy_workqueue(kacpi_hotplug_wq); | |
1572 | ||
1573 | return AE_OK; | |
1574 | } | |
09f98a82 TL |
1575 | |
1576 | acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control, | |
1577 | u32 pm1b_control) | |
1578 | { | |
1579 | int rc = 0; | |
1580 | if (__acpi_os_prepare_sleep) | |
1581 | rc = __acpi_os_prepare_sleep(sleep_state, | |
1582 | pm1a_control, pm1b_control); | |
1583 | if (rc < 0) | |
1584 | return AE_ERROR; | |
1585 | else if (rc > 0) | |
1586 | return AE_CTRL_SKIP; | |
1587 | ||
1588 | return AE_OK; | |
1589 | } | |
1590 | ||
1591 | void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, | |
1592 | u32 pm1a_ctrl, u32 pm1b_ctrl)) | |
1593 | { | |
1594 | __acpi_os_prepare_sleep = func; | |
1595 | } |