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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> | |
34 | #include <linux/pci.h> | |
1da177e4 LT |
35 | #include <linux/interrupt.h> |
36 | #include <linux/kmod.h> | |
37 | #include <linux/delay.h> | |
38 | #include <linux/workqueue.h> | |
39 | #include <linux/nmi.h> | |
ad71860a | 40 | #include <linux/acpi.h> |
2d6d9fd3 | 41 | #include <linux/acpi_io.h> |
1da177e4 | 42 | #include <linux/efi.h> |
df92e695 TR |
43 | #include <linux/ioport.h> |
44 | #include <linux/list.h> | |
f1241c87 MW |
45 | #include <linux/jiffies.h> |
46 | #include <linux/semaphore.h> | |
47 | ||
48 | #include <asm/io.h> | |
49 | #include <asm/uaccess.h> | |
50 | ||
51 | #include <acpi/acpi.h> | |
52 | #include <acpi/acpi_bus.h> | |
53 | #include <acpi/processor.h> | |
1da177e4 | 54 | |
1da177e4 | 55 | #define _COMPONENT ACPI_OS_SERVICES |
f52fd66d | 56 | ACPI_MODULE_NAME("osl"); |
1da177e4 | 57 | #define PREFIX "ACPI: " |
4be44fcd LB |
58 | struct acpi_os_dpc { |
59 | acpi_osd_exec_callback function; | |
60 | void *context; | |
65f27f38 | 61 | struct work_struct work; |
9ac61856 | 62 | int wait; |
1da177e4 LT |
63 | }; |
64 | ||
65 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
66 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE | |
67 | #endif | |
68 | ||
69 | #ifdef ENABLE_DEBUGGER | |
70 | #include <linux/kdb.h> | |
71 | ||
72 | /* stuff for debugger support */ | |
73 | int acpi_in_debugger; | |
74 | EXPORT_SYMBOL(acpi_in_debugger); | |
75 | ||
76 | extern char line_buf[80]; | |
4be44fcd | 77 | #endif /*ENABLE_DEBUGGER */ |
1da177e4 | 78 | |
1da177e4 LT |
79 | static acpi_osd_handler acpi_irq_handler; |
80 | static void *acpi_irq_context; | |
81 | static struct workqueue_struct *kacpid_wq; | |
88db5e14 | 82 | static struct workqueue_struct *kacpi_notify_wq; |
c02256be | 83 | static struct workqueue_struct *kacpi_hotplug_wq; |
1da177e4 | 84 | |
df92e695 TR |
85 | struct acpi_res_list { |
86 | resource_size_t start; | |
87 | resource_size_t end; | |
88 | acpi_adr_space_type resource_type; /* IO port, System memory, ...*/ | |
89 | char name[5]; /* only can have a length of 4 chars, make use of this | |
90 | one instead of res->name, no need to kalloc then */ | |
91 | struct list_head resource_list; | |
a5fe1a03 | 92 | int count; |
df92e695 TR |
93 | }; |
94 | ||
95 | static LIST_HEAD(resource_list_head); | |
96 | static DEFINE_SPINLOCK(acpi_res_lock); | |
97 | ||
620242ae MS |
98 | /* |
99 | * This list of permanent mappings is for memory that may be accessed from | |
100 | * interrupt context, where we can't do the ioremap(). | |
101 | */ | |
102 | struct acpi_ioremap { | |
103 | struct list_head list; | |
104 | void __iomem *virt; | |
105 | acpi_physical_address phys; | |
106 | acpi_size size; | |
b7c1fadd | 107 | unsigned long refcount; |
620242ae MS |
108 | }; |
109 | ||
110 | static LIST_HEAD(acpi_ioremaps); | |
7bbb8903 | 111 | static DEFINE_MUTEX(acpi_ioremap_lock); |
620242ae | 112 | |
b0ed7a91 | 113 | static void __init acpi_osi_setup_late(void); |
ae00d812 | 114 | |
d4b7dc49 | 115 | /* |
a6e0887f | 116 | * The story of _OSI(Linux) |
d4b7dc49 | 117 | * |
a6e0887f LB |
118 | * From pre-history through Linux-2.6.22, |
119 | * Linux responded TRUE upon a BIOS OSI(Linux) query. | |
d4b7dc49 | 120 | * |
a6e0887f LB |
121 | * Unfortunately, reference BIOS writers got wind of this |
122 | * and put OSI(Linux) in their example code, quickly exposing | |
123 | * this string as ill-conceived and opening the door to | |
124 | * an un-bounded number of BIOS incompatibilities. | |
d4b7dc49 | 125 | * |
a6e0887f LB |
126 | * For example, OSI(Linux) was used on resume to re-POST a |
127 | * video card on one system, because Linux at that time | |
128 | * could not do a speedy restore in its native driver. | |
129 | * But then upon gaining quick native restore capability, | |
130 | * Linux has no way to tell the BIOS to skip the time-consuming | |
131 | * POST -- putting Linux at a permanent performance disadvantage. | |
132 | * On another system, the BIOS writer used OSI(Linux) | |
133 | * to infer native OS support for IPMI! On other systems, | |
134 | * OSI(Linux) simply got in the way of Linux claiming to | |
135 | * be compatible with other operating systems, exposing | |
136 | * BIOS issues such as skipped device initialization. | |
d4b7dc49 | 137 | * |
a6e0887f LB |
138 | * So "Linux" turned out to be a really poor chose of |
139 | * OSI string, and from Linux-2.6.23 onward we respond FALSE. | |
d4b7dc49 LB |
140 | * |
141 | * BIOS writers should NOT query _OSI(Linux) on future systems. | |
a6e0887f LB |
142 | * Linux will complain on the console when it sees it, and return FALSE. |
143 | * To get Linux to return TRUE for your system will require | |
144 | * a kernel source update to add a DMI entry, | |
145 | * or boot with "acpi_osi=Linux" | |
d4b7dc49 | 146 | */ |
d4b7dc49 | 147 | |
1d15d84e | 148 | static struct osi_linux { |
d4b7dc49 LB |
149 | unsigned int enable:1; |
150 | unsigned int dmi:1; | |
151 | unsigned int cmdline:1; | |
d90aa92c | 152 | } osi_linux = {0, 0, 0}; |
f507654d | 153 | |
b0ed7a91 LM |
154 | static u32 acpi_osi_handler(acpi_string interface, u32 supported) |
155 | { | |
156 | if (!strcmp("Linux", interface)) { | |
157 | ||
3af283e1 | 158 | printk(KERN_NOTICE FW_BUG PREFIX |
b0ed7a91 LM |
159 | "BIOS _OSI(Linux) query %s%s\n", |
160 | osi_linux.enable ? "honored" : "ignored", | |
161 | osi_linux.cmdline ? " via cmdline" : | |
162 | osi_linux.dmi ? " via DMI" : ""); | |
163 | } | |
164 | ||
165 | return supported; | |
166 | } | |
167 | ||
9a47cdb1 BH |
168 | static void __init acpi_request_region (struct acpi_generic_address *addr, |
169 | unsigned int length, char *desc) | |
170 | { | |
9a47cdb1 BH |
171 | if (!addr->address || !length) |
172 | return; | |
173 | ||
cfa806f0 | 174 | /* Resources are never freed */ |
eee3c859 | 175 | if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
cfa806f0 | 176 | request_region(addr->address, length, desc); |
eee3c859 | 177 | else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
cfa806f0 | 178 | request_mem_region(addr->address, length, desc); |
9a47cdb1 BH |
179 | } |
180 | ||
181 | static int __init acpi_reserve_resources(void) | |
182 | { | |
eee3c859 | 183 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
184 | "ACPI PM1a_EVT_BLK"); |
185 | ||
eee3c859 | 186 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
187 | "ACPI PM1b_EVT_BLK"); |
188 | ||
eee3c859 | 189 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
190 | "ACPI PM1a_CNT_BLK"); |
191 | ||
eee3c859 | 192 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
193 | "ACPI PM1b_CNT_BLK"); |
194 | ||
eee3c859 LB |
195 | if (acpi_gbl_FADT.pm_timer_length == 4) |
196 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 197 | |
eee3c859 | 198 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
199 | "ACPI PM2_CNT_BLK"); |
200 | ||
201 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
202 | ||
eee3c859 LB |
203 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
204 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
205 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 206 | |
eee3c859 LB |
207 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
208 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
209 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
210 | |
211 | return 0; | |
212 | } | |
213 | device_initcall(acpi_reserve_resources); | |
214 | ||
4be44fcd | 215 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
216 | { |
217 | va_list args; | |
218 | va_start(args, fmt); | |
219 | acpi_os_vprintf(fmt, args); | |
220 | va_end(args); | |
221 | } | |
4be44fcd | 222 | |
4be44fcd | 223 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
224 | { |
225 | static char buffer[512]; | |
4be44fcd | 226 | |
1da177e4 LT |
227 | vsprintf(buffer, fmt, args); |
228 | ||
229 | #ifdef ENABLE_DEBUGGER | |
230 | if (acpi_in_debugger) { | |
231 | kdb_printf("%s", buffer); | |
232 | } else { | |
4d939155 | 233 | printk(KERN_CONT "%s", buffer); |
1da177e4 LT |
234 | } |
235 | #else | |
4d939155 | 236 | printk(KERN_CONT "%s", buffer); |
1da177e4 LT |
237 | #endif |
238 | } | |
239 | ||
ad71860a | 240 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
241 | { |
242 | if (efi_enabled) { | |
b2c99e3c | 243 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 244 | return efi.acpi20; |
b2c99e3c | 245 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 246 | return efi.acpi; |
1da177e4 | 247 | else { |
4be44fcd LB |
248 | printk(KERN_ERR PREFIX |
249 | "System description tables not found\n"); | |
ad71860a | 250 | return 0; |
1da177e4 | 251 | } |
239665a3 LB |
252 | } else { |
253 | acpi_physical_address pa = 0; | |
254 | ||
255 | acpi_find_root_pointer(&pa); | |
256 | return pa; | |
257 | } | |
1da177e4 LT |
258 | } |
259 | ||
78cdb3ed | 260 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
4a3cba5e MS |
261 | static struct acpi_ioremap * |
262 | acpi_map_lookup(acpi_physical_address phys, acpi_size size) | |
620242ae MS |
263 | { |
264 | struct acpi_ioremap *map; | |
265 | ||
78cdb3ed | 266 | list_for_each_entry_rcu(map, &acpi_ioremaps, list) |
620242ae MS |
267 | if (map->phys <= phys && |
268 | phys + size <= map->phys + map->size) | |
4a3cba5e MS |
269 | return map; |
270 | ||
271 | return NULL; | |
272 | } | |
273 | ||
274 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ | |
275 | static void __iomem * | |
276 | acpi_map_vaddr_lookup(acpi_physical_address phys, unsigned int size) | |
277 | { | |
278 | struct acpi_ioremap *map; | |
279 | ||
280 | map = acpi_map_lookup(phys, size); | |
281 | if (map) | |
282 | return map->virt + (phys - map->phys); | |
620242ae MS |
283 | |
284 | return NULL; | |
285 | } | |
286 | ||
13606a2d RW |
287 | void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size) |
288 | { | |
289 | struct acpi_ioremap *map; | |
290 | void __iomem *virt = NULL; | |
291 | ||
292 | mutex_lock(&acpi_ioremap_lock); | |
293 | map = acpi_map_lookup(phys, size); | |
294 | if (map) { | |
295 | virt = map->virt + (phys - map->phys); | |
296 | map->refcount++; | |
297 | } | |
298 | mutex_unlock(&acpi_ioremap_lock); | |
299 | return virt; | |
300 | } | |
301 | EXPORT_SYMBOL_GPL(acpi_os_get_iomem); | |
302 | ||
78cdb3ed | 303 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
620242ae MS |
304 | static struct acpi_ioremap * |
305 | acpi_map_lookup_virt(void __iomem *virt, acpi_size size) | |
306 | { | |
307 | struct acpi_ioremap *map; | |
308 | ||
78cdb3ed | 309 | list_for_each_entry_rcu(map, &acpi_ioremaps, list) |
4a3cba5e MS |
310 | if (map->virt <= virt && |
311 | virt + size <= map->virt + map->size) | |
620242ae MS |
312 | return map; |
313 | ||
314 | return NULL; | |
315 | } | |
316 | ||
2fdf0741 JB |
317 | void __iomem *__init_refok |
318 | acpi_os_map_memory(acpi_physical_address phys, acpi_size size) | |
1da177e4 | 319 | { |
7ffd0443 | 320 | struct acpi_ioremap *map; |
620242ae | 321 | void __iomem *virt; |
2d6d9fd3 RW |
322 | acpi_physical_address pg_off; |
323 | acpi_size pg_sz; | |
620242ae | 324 | |
9f4fd61f BH |
325 | if (phys > ULONG_MAX) { |
326 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 327 | return NULL; |
1da177e4 | 328 | } |
620242ae MS |
329 | |
330 | if (!acpi_gbl_permanent_mmap) | |
ad71860a | 331 | return __acpi_map_table((unsigned long)phys, size); |
620242ae | 332 | |
7ffd0443 RW |
333 | mutex_lock(&acpi_ioremap_lock); |
334 | /* Check if there's a suitable mapping already. */ | |
335 | map = acpi_map_lookup(phys, size); | |
336 | if (map) { | |
b7c1fadd | 337 | map->refcount++; |
7ffd0443 RW |
338 | goto out; |
339 | } | |
340 | ||
620242ae | 341 | map = kzalloc(sizeof(*map), GFP_KERNEL); |
7ffd0443 RW |
342 | if (!map) { |
343 | mutex_unlock(&acpi_ioremap_lock); | |
620242ae | 344 | return NULL; |
7ffd0443 | 345 | } |
620242ae | 346 | |
4a3cba5e MS |
347 | pg_off = round_down(phys, PAGE_SIZE); |
348 | pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off; | |
2d6d9fd3 | 349 | virt = acpi_os_ioremap(pg_off, pg_sz); |
620242ae | 350 | if (!virt) { |
7ffd0443 | 351 | mutex_unlock(&acpi_ioremap_lock); |
620242ae MS |
352 | kfree(map); |
353 | return NULL; | |
354 | } | |
355 | ||
356 | INIT_LIST_HEAD(&map->list); | |
357 | map->virt = virt; | |
4a3cba5e MS |
358 | map->phys = pg_off; |
359 | map->size = pg_sz; | |
b7c1fadd | 360 | map->refcount = 1; |
620242ae | 361 | |
78cdb3ed | 362 | list_add_tail_rcu(&map->list, &acpi_ioremaps); |
620242ae | 363 | |
7ffd0443 RW |
364 | out: |
365 | mutex_unlock(&acpi_ioremap_lock); | |
4a3cba5e | 366 | return map->virt + (phys - map->phys); |
1da177e4 | 367 | } |
55a82ab3 | 368 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 369 | |
b7c1fadd | 370 | static void acpi_os_drop_map_ref(struct acpi_ioremap *map) |
4a3cba5e | 371 | { |
b7c1fadd RW |
372 | if (!--map->refcount) |
373 | list_del_rcu(&map->list); | |
4a3cba5e | 374 | } |
4a3cba5e | 375 | |
b7c1fadd | 376 | static void acpi_os_map_cleanup(struct acpi_ioremap *map) |
7fe135dc | 377 | { |
b7c1fadd RW |
378 | if (!map->refcount) { |
379 | synchronize_rcu(); | |
380 | iounmap(map->virt); | |
381 | kfree(map); | |
382 | } | |
4a3cba5e MS |
383 | } |
384 | ||
0d3a9cf5 | 385 | void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
1da177e4 | 386 | { |
620242ae | 387 | struct acpi_ioremap *map; |
620242ae MS |
388 | |
389 | if (!acpi_gbl_permanent_mmap) { | |
7d97277b | 390 | __acpi_unmap_table(virt, size); |
620242ae MS |
391 | return; |
392 | } | |
393 | ||
7bbb8903 | 394 | mutex_lock(&acpi_ioremap_lock); |
620242ae MS |
395 | map = acpi_map_lookup_virt(virt, size); |
396 | if (!map) { | |
7bbb8903 | 397 | mutex_unlock(&acpi_ioremap_lock); |
7fe135dc | 398 | WARN(true, PREFIX "%s: bad address %p\n", __func__, virt); |
620242ae MS |
399 | return; |
400 | } | |
b7c1fadd | 401 | acpi_os_drop_map_ref(map); |
7bbb8903 | 402 | mutex_unlock(&acpi_ioremap_lock); |
620242ae | 403 | |
b7c1fadd | 404 | acpi_os_map_cleanup(map); |
1da177e4 | 405 | } |
55a82ab3 | 406 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 | 407 | |
0d3a9cf5 | 408 | void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
7d97277b YL |
409 | { |
410 | if (!acpi_gbl_permanent_mmap) | |
411 | __acpi_unmap_table(virt, size); | |
412 | } | |
413 | ||
073b4964 | 414 | static int acpi_os_map_generic_address(struct acpi_generic_address *addr) |
29718521 MS |
415 | { |
416 | void __iomem *virt; | |
417 | ||
418 | if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) | |
419 | return 0; | |
420 | ||
421 | if (!addr->address || !addr->bit_width) | |
422 | return -EINVAL; | |
423 | ||
424 | virt = acpi_os_map_memory(addr->address, addr->bit_width / 8); | |
425 | if (!virt) | |
426 | return -EIO; | |
427 | ||
428 | return 0; | |
429 | } | |
29718521 | 430 | |
073b4964 | 431 | static void acpi_os_unmap_generic_address(struct acpi_generic_address *addr) |
29718521 | 432 | { |
7fe135dc | 433 | struct acpi_ioremap *map; |
29718521 MS |
434 | |
435 | if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) | |
436 | return; | |
437 | ||
438 | if (!addr->address || !addr->bit_width) | |
439 | return; | |
440 | ||
7bbb8903 | 441 | mutex_lock(&acpi_ioremap_lock); |
7fe135dc RW |
442 | map = acpi_map_lookup(addr->address, addr->bit_width / 8); |
443 | if (!map) { | |
444 | mutex_unlock(&acpi_ioremap_lock); | |
445 | return; | |
446 | } | |
b7c1fadd | 447 | acpi_os_drop_map_ref(map); |
7bbb8903 | 448 | mutex_unlock(&acpi_ioremap_lock); |
29718521 | 449 | |
b7c1fadd | 450 | acpi_os_map_cleanup(map); |
29718521 | 451 | } |
29718521 | 452 | |
1da177e4 LT |
453 | #ifdef ACPI_FUTURE_USAGE |
454 | acpi_status | |
4be44fcd | 455 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 456 | { |
4be44fcd | 457 | if (!phys || !virt) |
1da177e4 LT |
458 | return AE_BAD_PARAMETER; |
459 | ||
460 | *phys = virt_to_phys(virt); | |
461 | ||
462 | return AE_OK; | |
463 | } | |
464 | #endif | |
465 | ||
466 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
467 | ||
468 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
469 | ||
470 | acpi_status | |
4be44fcd LB |
471 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
472 | acpi_string * new_val) | |
1da177e4 LT |
473 | { |
474 | if (!init_val || !new_val) | |
475 | return AE_BAD_PARAMETER; | |
476 | ||
477 | *new_val = NULL; | |
4be44fcd | 478 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 479 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 480 | acpi_os_name); |
1da177e4 LT |
481 | *new_val = acpi_os_name; |
482 | } | |
483 | ||
484 | return AE_OK; | |
485 | } | |
486 | ||
487 | acpi_status | |
4be44fcd LB |
488 | acpi_os_table_override(struct acpi_table_header * existing_table, |
489 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
490 | { |
491 | if (!existing_table || !new_table) | |
492 | return AE_BAD_PARAMETER; | |
493 | ||
71fc47a9 MG |
494 | *new_table = NULL; |
495 | ||
1da177e4 LT |
496 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
497 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 498 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 | 499 | #endif |
6ed31e92 ÉP |
500 | if (*new_table != NULL) { |
501 | printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], " | |
502 | "this is unsafe: tainting kernel\n", | |
503 | existing_table->signature, | |
504 | existing_table->oem_table_id); | |
505 | add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); | |
506 | } | |
1da177e4 LT |
507 | return AE_OK; |
508 | } | |
509 | ||
7d12e780 | 510 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 511 | { |
5229e87d LB |
512 | u32 handled; |
513 | ||
514 | handled = (*acpi_irq_handler) (acpi_irq_context); | |
515 | ||
516 | if (handled) { | |
517 | acpi_irq_handled++; | |
518 | return IRQ_HANDLED; | |
88bea188 LB |
519 | } else { |
520 | acpi_irq_not_handled++; | |
5229e87d | 521 | return IRQ_NONE; |
88bea188 | 522 | } |
1da177e4 LT |
523 | } |
524 | ||
525 | acpi_status | |
4be44fcd LB |
526 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
527 | void *context) | |
1da177e4 LT |
528 | { |
529 | unsigned int irq; | |
530 | ||
5229e87d LB |
531 | acpi_irq_stats_init(); |
532 | ||
1da177e4 | 533 | /* |
23fe3630 RW |
534 | * ACPI interrupts different from the SCI in our copy of the FADT are |
535 | * not supported. | |
1da177e4 | 536 | */ |
23fe3630 RW |
537 | if (gsi != acpi_gbl_FADT.sci_interrupt) |
538 | return AE_BAD_PARAMETER; | |
539 | ||
540 | if (acpi_irq_handler) | |
541 | return AE_ALREADY_ACQUIRED; | |
542 | ||
1da177e4 LT |
543 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
544 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
545 | gsi); | |
546 | return AE_OK; | |
547 | } | |
548 | ||
549 | acpi_irq_handler = handler; | |
550 | acpi_irq_context = context; | |
dace1453 | 551 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 | 552 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
23fe3630 | 553 | acpi_irq_handler = NULL; |
1da177e4 LT |
554 | return AE_NOT_ACQUIRED; |
555 | } | |
1da177e4 LT |
556 | |
557 | return AE_OK; | |
558 | } | |
559 | ||
4be44fcd | 560 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 | 561 | { |
23fe3630 RW |
562 | if (irq != acpi_gbl_FADT.sci_interrupt) |
563 | return AE_BAD_PARAMETER; | |
564 | ||
565 | free_irq(irq, acpi_irq); | |
566 | acpi_irq_handler = NULL; | |
1da177e4 LT |
567 | |
568 | return AE_OK; | |
569 | } | |
570 | ||
571 | /* | |
572 | * Running in interpreter thread context, safe to sleep | |
573 | */ | |
574 | ||
439913ff | 575 | void acpi_os_sleep(u64 ms) |
1da177e4 | 576 | { |
01a527ec | 577 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 578 | } |
4be44fcd | 579 | |
4be44fcd | 580 | void acpi_os_stall(u32 us) |
1da177e4 LT |
581 | { |
582 | while (us) { | |
583 | u32 delay = 1000; | |
584 | ||
585 | if (delay > us) | |
586 | delay = us; | |
587 | udelay(delay); | |
588 | touch_nmi_watchdog(); | |
589 | us -= delay; | |
590 | } | |
591 | } | |
4be44fcd | 592 | |
1da177e4 LT |
593 | /* |
594 | * Support ACPI 3.0 AML Timer operand | |
595 | * Returns 64-bit free-running, monotonically increasing timer | |
596 | * with 100ns granularity | |
597 | */ | |
4be44fcd | 598 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
599 | { |
600 | static u64 t; | |
601 | ||
602 | #ifdef CONFIG_HPET | |
603 | /* TBD: use HPET if available */ | |
604 | #endif | |
605 | ||
606 | #ifdef CONFIG_X86_PM_TIMER | |
607 | /* TBD: default to PM timer if HPET was not available */ | |
608 | #endif | |
609 | if (!t) | |
610 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
611 | ||
612 | return ++t; | |
613 | } | |
614 | ||
4be44fcd | 615 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
616 | { |
617 | u32 dummy; | |
618 | ||
619 | if (!value) | |
620 | value = &dummy; | |
621 | ||
49fbabf5 ZY |
622 | *value = 0; |
623 | if (width <= 8) { | |
4be44fcd | 624 | *(u8 *) value = inb(port); |
49fbabf5 | 625 | } else if (width <= 16) { |
4be44fcd | 626 | *(u16 *) value = inw(port); |
49fbabf5 | 627 | } else if (width <= 32) { |
4be44fcd | 628 | *(u32 *) value = inl(port); |
49fbabf5 | 629 | } else { |
1da177e4 LT |
630 | BUG(); |
631 | } | |
632 | ||
633 | return AE_OK; | |
634 | } | |
4be44fcd | 635 | |
1da177e4 LT |
636 | EXPORT_SYMBOL(acpi_os_read_port); |
637 | ||
4be44fcd | 638 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 639 | { |
49fbabf5 | 640 | if (width <= 8) { |
1da177e4 | 641 | outb(value, port); |
49fbabf5 | 642 | } else if (width <= 16) { |
1da177e4 | 643 | outw(value, port); |
49fbabf5 | 644 | } else if (width <= 32) { |
1da177e4 | 645 | outl(value, port); |
49fbabf5 | 646 | } else { |
1da177e4 LT |
647 | BUG(); |
648 | } | |
649 | ||
650 | return AE_OK; | |
651 | } | |
4be44fcd | 652 | |
1da177e4 LT |
653 | EXPORT_SYMBOL(acpi_os_write_port); |
654 | ||
655 | acpi_status | |
4be44fcd | 656 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 657 | { |
4be44fcd | 658 | void __iomem *virt_addr; |
884b821f RW |
659 | unsigned int size = width / 8; |
660 | bool unmap = false; | |
661 | u32 dummy; | |
620242ae | 662 | |
78cdb3ed | 663 | rcu_read_lock(); |
620242ae | 664 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); |
620242ae | 665 | if (!virt_addr) { |
884b821f | 666 | rcu_read_unlock(); |
2d6d9fd3 | 667 | virt_addr = acpi_os_ioremap(phys_addr, size); |
884b821f RW |
668 | if (!virt_addr) |
669 | return AE_BAD_ADDRESS; | |
670 | unmap = true; | |
620242ae | 671 | } |
884b821f | 672 | |
1da177e4 LT |
673 | if (!value) |
674 | value = &dummy; | |
675 | ||
676 | switch (width) { | |
677 | case 8: | |
4be44fcd | 678 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
679 | break; |
680 | case 16: | |
4be44fcd | 681 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
682 | break; |
683 | case 32: | |
4be44fcd | 684 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
685 | break; |
686 | default: | |
687 | BUG(); | |
688 | } | |
689 | ||
620242ae MS |
690 | if (unmap) |
691 | iounmap(virt_addr); | |
884b821f RW |
692 | else |
693 | rcu_read_unlock(); | |
1da177e4 LT |
694 | |
695 | return AE_OK; | |
696 | } | |
697 | ||
698 | acpi_status | |
4be44fcd | 699 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 700 | { |
4be44fcd | 701 | void __iomem *virt_addr; |
884b821f RW |
702 | unsigned int size = width / 8; |
703 | bool unmap = false; | |
620242ae | 704 | |
78cdb3ed | 705 | rcu_read_lock(); |
620242ae | 706 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); |
620242ae | 707 | if (!virt_addr) { |
884b821f | 708 | rcu_read_unlock(); |
2d6d9fd3 | 709 | virt_addr = acpi_os_ioremap(phys_addr, size); |
884b821f RW |
710 | if (!virt_addr) |
711 | return AE_BAD_ADDRESS; | |
712 | unmap = true; | |
620242ae | 713 | } |
1da177e4 LT |
714 | |
715 | switch (width) { | |
716 | case 8: | |
717 | writeb(value, virt_addr); | |
718 | break; | |
719 | case 16: | |
720 | writew(value, virt_addr); | |
721 | break; | |
722 | case 32: | |
723 | writel(value, virt_addr); | |
724 | break; | |
725 | default: | |
726 | BUG(); | |
727 | } | |
728 | ||
620242ae MS |
729 | if (unmap) |
730 | iounmap(virt_addr); | |
884b821f RW |
731 | else |
732 | rcu_read_unlock(); | |
1da177e4 LT |
733 | |
734 | return AE_OK; | |
735 | } | |
736 | ||
1da177e4 | 737 | acpi_status |
4be44fcd | 738 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
c5f0231e | 739 | u64 *value, u32 width) |
1da177e4 LT |
740 | { |
741 | int result, size; | |
c5f0231e | 742 | u32 value32; |
1da177e4 LT |
743 | |
744 | if (!value) | |
745 | return AE_BAD_PARAMETER; | |
746 | ||
747 | switch (width) { | |
748 | case 8: | |
749 | size = 1; | |
750 | break; | |
751 | case 16: | |
752 | size = 2; | |
753 | break; | |
754 | case 32: | |
755 | size = 4; | |
756 | break; | |
757 | default: | |
758 | return AE_ERROR; | |
759 | } | |
760 | ||
b6ce068a MW |
761 | result = raw_pci_read(pci_id->segment, pci_id->bus, |
762 | PCI_DEVFN(pci_id->device, pci_id->function), | |
c5f0231e BM |
763 | reg, size, &value32); |
764 | *value = value32; | |
1da177e4 LT |
765 | |
766 | return (result ? AE_ERROR : AE_OK); | |
767 | } | |
4be44fcd | 768 | |
1da177e4 | 769 | acpi_status |
4be44fcd | 770 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
439913ff | 771 | u64 value, u32 width) |
1da177e4 LT |
772 | { |
773 | int result, size; | |
774 | ||
775 | switch (width) { | |
776 | case 8: | |
777 | size = 1; | |
778 | break; | |
779 | case 16: | |
780 | size = 2; | |
781 | break; | |
782 | case 32: | |
783 | size = 4; | |
784 | break; | |
785 | default: | |
786 | return AE_ERROR; | |
787 | } | |
788 | ||
b6ce068a MW |
789 | result = raw_pci_write(pci_id->segment, pci_id->bus, |
790 | PCI_DEVFN(pci_id->device, pci_id->function), | |
791 | reg, size, value); | |
1da177e4 LT |
792 | |
793 | return (result ? AE_ERROR : AE_OK); | |
794 | } | |
795 | ||
65f27f38 | 796 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
797 | { |
798 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
88db5e14 | 799 | |
9ac61856 BH |
800 | if (dpc->wait) |
801 | acpi_os_wait_events_complete(NULL); | |
19cd847a ZR |
802 | |
803 | dpc->function(dpc->context); | |
804 | kfree(dpc); | |
19cd847a ZR |
805 | } |
806 | ||
b8d35192 AS |
807 | /******************************************************************************* |
808 | * | |
809 | * FUNCTION: acpi_os_execute | |
810 | * | |
811 | * PARAMETERS: Type - Type of the callback | |
812 | * Function - Function to be executed | |
813 | * Context - Function parameters | |
814 | * | |
815 | * RETURN: Status | |
816 | * | |
817 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
818 | * immediately executes function on a separate thread. | |
819 | * | |
820 | ******************************************************************************/ | |
821 | ||
19cd847a ZR |
822 | static acpi_status __acpi_os_execute(acpi_execute_type type, |
823 | acpi_osd_exec_callback function, void *context, int hp) | |
1da177e4 | 824 | { |
4be44fcd LB |
825 | acpi_status status = AE_OK; |
826 | struct acpi_os_dpc *dpc; | |
17bc54ee | 827 | struct workqueue_struct *queue; |
19cd847a | 828 | int ret; |
72945b2b LB |
829 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
830 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
831 | function, context)); | |
1da177e4 | 832 | |
1da177e4 LT |
833 | /* |
834 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 835 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
836 | * way that allows us to also free its memory inside the callee. |
837 | * Because we may want to schedule several tasks with different | |
838 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 839 | * having a static work_struct. |
1da177e4 | 840 | */ |
72945b2b | 841 | |
65f27f38 | 842 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 843 | if (!dpc) |
889c78be | 844 | return AE_NO_MEMORY; |
b976fe19 | 845 | |
1da177e4 LT |
846 | dpc->function = function; |
847 | dpc->context = context; | |
b976fe19 | 848 | |
c02256be ZR |
849 | /* |
850 | * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq | |
851 | * because the hotplug code may call driver .remove() functions, | |
852 | * which invoke flush_scheduled_work/acpi_os_wait_events_complete | |
853 | * to flush these workqueues. | |
854 | */ | |
855 | queue = hp ? kacpi_hotplug_wq : | |
856 | (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq); | |
9ac61856 | 857 | dpc->wait = hp ? 1 : 0; |
bc73675b ZR |
858 | |
859 | if (queue == kacpi_hotplug_wq) | |
860 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
861 | else if (queue == kacpi_notify_wq) | |
862 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
863 | else | |
864 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
865 | ||
8fec62b2 TH |
866 | /* |
867 | * On some machines, a software-initiated SMI causes corruption unless | |
868 | * the SMI runs on CPU 0. An SMI can be initiated by any AML, but | |
869 | * typically it's done in GPE-related methods that are run via | |
870 | * workqueues, so we can avoid the known corruption cases by always | |
871 | * queueing on CPU 0. | |
872 | */ | |
873 | ret = queue_work_on(0, queue, &dpc->work); | |
19cd847a ZR |
874 | |
875 | if (!ret) { | |
55ac9a01 LM |
876 | printk(KERN_ERR PREFIX |
877 | "Call to queue_work() failed.\n"); | |
17bc54ee AS |
878 | status = AE_ERROR; |
879 | kfree(dpc); | |
1da177e4 | 880 | } |
889c78be | 881 | return status; |
1da177e4 | 882 | } |
4be44fcd | 883 | |
19cd847a ZR |
884 | acpi_status acpi_os_execute(acpi_execute_type type, |
885 | acpi_osd_exec_callback function, void *context) | |
886 | { | |
887 | return __acpi_os_execute(type, function, context, 0); | |
888 | } | |
b8d35192 | 889 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 890 | |
19cd847a ZR |
891 | acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function, |
892 | void *context) | |
893 | { | |
894 | return __acpi_os_execute(0, function, context, 1); | |
895 | } | |
896 | ||
4be44fcd | 897 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
898 | { |
899 | flush_workqueue(kacpid_wq); | |
2f67a069 | 900 | flush_workqueue(kacpi_notify_wq); |
1da177e4 | 901 | } |
4be44fcd | 902 | |
1da177e4 LT |
903 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
904 | ||
1da177e4 | 905 | acpi_status |
4be44fcd | 906 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 907 | { |
4be44fcd | 908 | struct semaphore *sem = NULL; |
1da177e4 | 909 | |
1da177e4 LT |
910 | sem = acpi_os_allocate(sizeof(struct semaphore)); |
911 | if (!sem) | |
d550d98d | 912 | return AE_NO_MEMORY; |
1da177e4 LT |
913 | memset(sem, 0, sizeof(struct semaphore)); |
914 | ||
915 | sema_init(sem, initial_units); | |
916 | ||
4be44fcd | 917 | *handle = (acpi_handle *) sem; |
1da177e4 | 918 | |
4be44fcd LB |
919 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
920 | *handle, initial_units)); | |
1da177e4 | 921 | |
d550d98d | 922 | return AE_OK; |
1da177e4 | 923 | } |
1da177e4 | 924 | |
1da177e4 LT |
925 | /* |
926 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
927 | * 'delete_semaphore()' function -- may result in an invalid | |
928 | * pointer dereference for non-synchronized consumers. Should | |
929 | * we at least check for blocked threads and signal/cancel them? | |
930 | */ | |
931 | ||
4be44fcd | 932 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 933 | { |
4be44fcd | 934 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 935 | |
1da177e4 | 936 | if (!sem) |
d550d98d | 937 | return AE_BAD_PARAMETER; |
1da177e4 | 938 | |
4be44fcd | 939 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 940 | |
f1241c87 | 941 | BUG_ON(!list_empty(&sem->wait_list)); |
02438d87 | 942 | kfree(sem); |
4be44fcd | 943 | sem = NULL; |
1da177e4 | 944 | |
d550d98d | 945 | return AE_OK; |
1da177e4 | 946 | } |
1da177e4 | 947 | |
1da177e4 | 948 | /* |
1da177e4 LT |
949 | * TODO: Support for units > 1? |
950 | */ | |
4be44fcd | 951 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 952 | { |
4be44fcd LB |
953 | acpi_status status = AE_OK; |
954 | struct semaphore *sem = (struct semaphore *)handle; | |
f1241c87 | 955 | long jiffies; |
4be44fcd | 956 | int ret = 0; |
1da177e4 | 957 | |
1da177e4 | 958 | if (!sem || (units < 1)) |
d550d98d | 959 | return AE_BAD_PARAMETER; |
1da177e4 LT |
960 | |
961 | if (units > 1) | |
d550d98d | 962 | return AE_SUPPORT; |
1da177e4 | 963 | |
4be44fcd LB |
964 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
965 | handle, units, timeout)); | |
1da177e4 | 966 | |
f1241c87 MW |
967 | if (timeout == ACPI_WAIT_FOREVER) |
968 | jiffies = MAX_SCHEDULE_TIMEOUT; | |
969 | else | |
970 | jiffies = msecs_to_jiffies(timeout); | |
971 | ||
972 | ret = down_timeout(sem, jiffies); | |
973 | if (ret) | |
974 | status = AE_TIME; | |
1da177e4 LT |
975 | |
976 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 977 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 978 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
979 | handle, units, timeout, |
980 | acpi_format_exception(status))); | |
981 | } else { | |
982 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 983 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 984 | units, timeout)); |
1da177e4 LT |
985 | } |
986 | ||
d550d98d | 987 | return status; |
1da177e4 | 988 | } |
1da177e4 | 989 | |
1da177e4 LT |
990 | /* |
991 | * TODO: Support for units > 1? | |
992 | */ | |
4be44fcd | 993 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 994 | { |
4be44fcd | 995 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 996 | |
1da177e4 | 997 | if (!sem || (units < 1)) |
d550d98d | 998 | return AE_BAD_PARAMETER; |
1da177e4 LT |
999 | |
1000 | if (units > 1) | |
d550d98d | 1001 | return AE_SUPPORT; |
1da177e4 | 1002 | |
4be44fcd LB |
1003 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
1004 | units)); | |
1da177e4 LT |
1005 | |
1006 | up(sem); | |
1007 | ||
d550d98d | 1008 | return AE_OK; |
1da177e4 | 1009 | } |
4be44fcd | 1010 | |
1da177e4 | 1011 | #ifdef ACPI_FUTURE_USAGE |
4be44fcd | 1012 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
1013 | { |
1014 | ||
1015 | #ifdef ENABLE_DEBUGGER | |
1016 | if (acpi_in_debugger) { | |
1017 | u32 chars; | |
1018 | ||
1019 | kdb_read(buffer, sizeof(line_buf)); | |
1020 | ||
1021 | /* remove the CR kdb includes */ | |
1022 | chars = strlen(buffer) - 1; | |
1023 | buffer[chars] = '\0'; | |
1024 | } | |
1025 | #endif | |
1026 | ||
1027 | return 0; | |
1028 | } | |
4be44fcd | 1029 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 1030 | |
4be44fcd | 1031 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 1032 | { |
4be44fcd | 1033 | switch (function) { |
1da177e4 LT |
1034 | case ACPI_SIGNAL_FATAL: |
1035 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
1036 | break; | |
1037 | case ACPI_SIGNAL_BREAKPOINT: | |
1038 | /* | |
1039 | * AML Breakpoint | |
1040 | * ACPI spec. says to treat it as a NOP unless | |
1041 | * you are debugging. So if/when we integrate | |
1042 | * AML debugger into the kernel debugger its | |
1043 | * hook will go here. But until then it is | |
1044 | * not useful to print anything on breakpoints. | |
1045 | */ | |
1046 | break; | |
1047 | default: | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | return AE_OK; | |
1052 | } | |
4be44fcd | 1053 | |
4be44fcd | 1054 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
1055 | { |
1056 | char *p = acpi_os_name; | |
4be44fcd | 1057 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
1058 | |
1059 | if (!str || !*str) | |
1060 | return 0; | |
1061 | ||
1062 | for (; count-- && str && *str; str++) { | |
1063 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
1064 | *p++ = *str; | |
1065 | else if (*str == '\'' || *str == '"') | |
1066 | continue; | |
1067 | else | |
1068 | break; | |
1069 | } | |
1070 | *p = 0; | |
1071 | ||
1072 | return 1; | |
4be44fcd | 1073 | |
1da177e4 LT |
1074 | } |
1075 | ||
1076 | __setup("acpi_os_name=", acpi_os_name_setup); | |
1077 | ||
12d32064 LM |
1078 | #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ |
1079 | #define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */ | |
1080 | ||
1081 | struct osi_setup_entry { | |
1082 | char string[OSI_STRING_LENGTH_MAX]; | |
1083 | bool enable; | |
1084 | }; | |
1085 | ||
1086 | static struct osi_setup_entry __initdata osi_setup_entries[OSI_STRING_ENTRIES_MAX]; | |
1087 | ||
d90aa92c LM |
1088 | void __init acpi_osi_setup(char *str) |
1089 | { | |
12d32064 LM |
1090 | struct osi_setup_entry *osi; |
1091 | bool enable = true; | |
1092 | int i; | |
1093 | ||
d90aa92c LM |
1094 | if (!acpi_gbl_create_osi_method) |
1095 | return; | |
1096 | ||
1097 | if (str == NULL || *str == '\0') { | |
1098 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
1099 | acpi_gbl_create_osi_method = FALSE; | |
12d32064 LM |
1100 | return; |
1101 | } | |
1102 | ||
1103 | if (*str == '!') { | |
1104 | str++; | |
1105 | enable = false; | |
1106 | } | |
1107 | ||
1108 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { | |
1109 | osi = &osi_setup_entries[i]; | |
1110 | if (!strcmp(osi->string, str)) { | |
1111 | osi->enable = enable; | |
1112 | break; | |
1113 | } else if (osi->string[0] == '\0') { | |
1114 | osi->enable = enable; | |
1115 | strncpy(osi->string, str, OSI_STRING_LENGTH_MAX); | |
1116 | break; | |
1117 | } | |
1118 | } | |
d90aa92c LM |
1119 | } |
1120 | ||
d4b7dc49 LB |
1121 | static void __init set_osi_linux(unsigned int enable) |
1122 | { | |
d90aa92c | 1123 | if (osi_linux.enable != enable) |
d4b7dc49 | 1124 | osi_linux.enable = enable; |
b0ed7a91 LM |
1125 | |
1126 | if (osi_linux.enable) | |
1127 | acpi_osi_setup("Linux"); | |
1128 | else | |
1129 | acpi_osi_setup("!Linux"); | |
1130 | ||
d4b7dc49 LB |
1131 | return; |
1132 | } | |
1133 | ||
1134 | static void __init acpi_cmdline_osi_linux(unsigned int enable) | |
1135 | { | |
d90aa92c LM |
1136 | osi_linux.cmdline = 1; /* cmdline set the default and override DMI */ |
1137 | osi_linux.dmi = 0; | |
d4b7dc49 LB |
1138 | set_osi_linux(enable); |
1139 | ||
1140 | return; | |
1141 | } | |
1142 | ||
1143 | void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) | |
1144 | { | |
d4b7dc49 LB |
1145 | printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); |
1146 | ||
1147 | if (enable == -1) | |
1148 | return; | |
1149 | ||
d90aa92c | 1150 | osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ |
d4b7dc49 | 1151 | set_osi_linux(enable); |
f507654d | 1152 | |
f507654d LB |
1153 | return; |
1154 | } | |
1155 | ||
1da177e4 | 1156 | /* |
ae00d812 LB |
1157 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
1158 | * | |
1da177e4 | 1159 | * empty string disables _OSI |
ae00d812 LB |
1160 | * string starting with '!' disables that string |
1161 | * otherwise string is added to list, augmenting built-in strings | |
1da177e4 | 1162 | */ |
b0ed7a91 | 1163 | static void __init acpi_osi_setup_late(void) |
1da177e4 | 1164 | { |
12d32064 LM |
1165 | struct osi_setup_entry *osi; |
1166 | char *str; | |
1167 | int i; | |
d90aa92c | 1168 | acpi_status status; |
b0ed7a91 | 1169 | |
12d32064 LM |
1170 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { |
1171 | osi = &osi_setup_entries[i]; | |
1172 | str = osi->string; | |
b0ed7a91 | 1173 | |
12d32064 LM |
1174 | if (*str == '\0') |
1175 | break; | |
1176 | if (osi->enable) { | |
1177 | status = acpi_install_interface(str); | |
d90aa92c | 1178 | |
12d32064 LM |
1179 | if (ACPI_SUCCESS(status)) |
1180 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); | |
1181 | } else { | |
1182 | status = acpi_remove_interface(str); | |
d90aa92c | 1183 | |
12d32064 LM |
1184 | if (ACPI_SUCCESS(status)) |
1185 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); | |
1186 | } | |
b0ed7a91 LM |
1187 | } |
1188 | } | |
1189 | ||
d90aa92c | 1190 | static int __init osi_setup(char *str) |
b0ed7a91 | 1191 | { |
d90aa92c LM |
1192 | if (str && !strcmp("Linux", str)) |
1193 | acpi_cmdline_osi_linux(1); | |
1194 | else if (str && !strcmp("!Linux", str)) | |
1195 | acpi_cmdline_osi_linux(0); | |
1196 | else | |
1197 | acpi_osi_setup(str); | |
1da177e4 LT |
1198 | |
1199 | return 1; | |
1200 | } | |
1201 | ||
d90aa92c | 1202 | __setup("acpi_osi=", osi_setup); |
1da177e4 LT |
1203 | |
1204 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 1205 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
1206 | { |
1207 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
1208 | ||
1209 | acpi_gbl_all_methods_serialized = TRUE; | |
1210 | ||
1211 | return 1; | |
1212 | } | |
1213 | ||
1214 | __setup("acpi_serialize", acpi_serialize_setup); | |
1215 | ||
df92e695 TR |
1216 | /* Check of resource interference between native drivers and ACPI |
1217 | * OperationRegions (SystemIO and System Memory only). | |
1218 | * IO ports and memory declared in ACPI might be used by the ACPI subsystem | |
1219 | * in arbitrary AML code and can interfere with legacy drivers. | |
1220 | * acpi_enforce_resources= can be set to: | |
1221 | * | |
7e90560c | 1222 | * - strict (default) (2) |
df92e695 | 1223 | * -> further driver trying to access the resources will not load |
7e90560c | 1224 | * - lax (1) |
df92e695 TR |
1225 | * -> further driver trying to access the resources will load, but you |
1226 | * get a system message that something might go wrong... | |
1227 | * | |
1228 | * - no (0) | |
1229 | * -> ACPI Operation Region resources will not be registered | |
1230 | * | |
1231 | */ | |
1232 | #define ENFORCE_RESOURCES_STRICT 2 | |
1233 | #define ENFORCE_RESOURCES_LAX 1 | |
1234 | #define ENFORCE_RESOURCES_NO 0 | |
1235 | ||
7e90560c | 1236 | static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; |
df92e695 TR |
1237 | |
1238 | static int __init acpi_enforce_resources_setup(char *str) | |
1239 | { | |
1240 | if (str == NULL || *str == '\0') | |
1241 | return 0; | |
1242 | ||
1243 | if (!strcmp("strict", str)) | |
1244 | acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; | |
1245 | else if (!strcmp("lax", str)) | |
1246 | acpi_enforce_resources = ENFORCE_RESOURCES_LAX; | |
1247 | else if (!strcmp("no", str)) | |
1248 | acpi_enforce_resources = ENFORCE_RESOURCES_NO; | |
1249 | ||
1250 | return 1; | |
1251 | } | |
1252 | ||
1253 | __setup("acpi_enforce_resources=", acpi_enforce_resources_setup); | |
1254 | ||
1255 | /* Check for resource conflicts between ACPI OperationRegions and native | |
1256 | * drivers */ | |
876fba43 | 1257 | int acpi_check_resource_conflict(const struct resource *res) |
df92e695 TR |
1258 | { |
1259 | struct acpi_res_list *res_list_elem; | |
106d1a0a | 1260 | int ioport = 0, clash = 0; |
df92e695 TR |
1261 | |
1262 | if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) | |
1263 | return 0; | |
1264 | if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM)) | |
1265 | return 0; | |
1266 | ||
1267 | ioport = res->flags & IORESOURCE_IO; | |
1268 | ||
1269 | spin_lock(&acpi_res_lock); | |
1270 | list_for_each_entry(res_list_elem, &resource_list_head, | |
1271 | resource_list) { | |
1272 | if (ioport && (res_list_elem->resource_type | |
1273 | != ACPI_ADR_SPACE_SYSTEM_IO)) | |
1274 | continue; | |
1275 | if (!ioport && (res_list_elem->resource_type | |
1276 | != ACPI_ADR_SPACE_SYSTEM_MEMORY)) | |
1277 | continue; | |
1278 | ||
1279 | if (res->end < res_list_elem->start | |
1280 | || res_list_elem->end < res->start) | |
1281 | continue; | |
1282 | clash = 1; | |
1283 | break; | |
1284 | } | |
1285 | spin_unlock(&acpi_res_lock); | |
1286 | ||
1287 | if (clash) { | |
1288 | if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) { | |
1638bca8 | 1289 | printk(KERN_WARNING "ACPI: resource %s %pR" |
106d1a0a TR |
1290 | " conflicts with ACPI region %s " |
1291 | "[%s 0x%zx-0x%zx]\n", | |
1638bca8 | 1292 | res->name, res, res_list_elem->name, |
106d1a0a TR |
1293 | (res_list_elem->resource_type == |
1294 | ACPI_ADR_SPACE_SYSTEM_IO) ? "io" : "mem", | |
1295 | (size_t) res_list_elem->start, | |
1296 | (size_t) res_list_elem->end); | |
14f03343 JD |
1297 | if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) |
1298 | printk(KERN_NOTICE "ACPI: This conflict may" | |
1299 | " cause random problems and system" | |
1300 | " instability\n"); | |
1301 | printk(KERN_INFO "ACPI: If an ACPI driver is available" | |
1302 | " for this device, you should use it instead of" | |
1303 | " the native driver\n"); | |
df92e695 TR |
1304 | } |
1305 | if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT) | |
1306 | return -EBUSY; | |
1307 | } | |
1308 | return 0; | |
1309 | } | |
443dea72 | 1310 | EXPORT_SYMBOL(acpi_check_resource_conflict); |
df92e695 TR |
1311 | |
1312 | int acpi_check_region(resource_size_t start, resource_size_t n, | |
1313 | const char *name) | |
1314 | { | |
1315 | struct resource res = { | |
1316 | .start = start, | |
1317 | .end = start + n - 1, | |
1318 | .name = name, | |
1319 | .flags = IORESOURCE_IO, | |
1320 | }; | |
1321 | ||
1322 | return acpi_check_resource_conflict(&res); | |
1323 | } | |
1324 | EXPORT_SYMBOL(acpi_check_region); | |
1325 | ||
70dd6bea JD |
1326 | /* |
1327 | * Let drivers know whether the resource checks are effective | |
1328 | */ | |
1329 | int acpi_resources_are_enforced(void) | |
1330 | { | |
1331 | return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT; | |
1332 | } | |
1333 | EXPORT_SYMBOL(acpi_resources_are_enforced); | |
1334 | ||
9f63b88b LM |
1335 | /* |
1336 | * Deallocate the memory for a spinlock. | |
1337 | */ | |
1338 | void acpi_os_delete_lock(acpi_spinlock handle) | |
1339 | { | |
1340 | ACPI_FREE(handle); | |
1341 | } | |
1342 | ||
73459f73 RM |
1343 | /* |
1344 | * Acquire a spinlock. | |
1345 | * | |
1346 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1347 | */ |
1348 | ||
967440e3 | 1349 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1350 | { |
b8e4d893 | 1351 | acpi_cpu_flags flags; |
967440e3 | 1352 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1353 | return flags; |
1354 | } | |
1355 | ||
1356 | /* | |
1357 | * Release a spinlock. See above. | |
1358 | */ | |
1359 | ||
967440e3 | 1360 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1361 | { |
967440e3 | 1362 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1363 | } |
1364 | ||
73459f73 RM |
1365 | #ifndef ACPI_USE_LOCAL_CACHE |
1366 | ||
1367 | /******************************************************************************* | |
1368 | * | |
1369 | * FUNCTION: acpi_os_create_cache | |
1370 | * | |
b229cf92 BM |
1371 | * PARAMETERS: name - Ascii name for the cache |
1372 | * size - Size of each cached object | |
1373 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1374 | * cache - Where the new cache object is returned | |
73459f73 | 1375 | * |
b229cf92 | 1376 | * RETURN: status |
73459f73 RM |
1377 | * |
1378 | * DESCRIPTION: Create a cache object | |
1379 | * | |
1380 | ******************************************************************************/ | |
1381 | ||
1382 | acpi_status | |
4be44fcd | 1383 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1384 | { |
20c2df83 | 1385 | *cache = kmem_cache_create(name, size, 0, 0, NULL); |
a6fdbf90 | 1386 | if (*cache == NULL) |
b229cf92 BM |
1387 | return AE_ERROR; |
1388 | else | |
1389 | return AE_OK; | |
73459f73 RM |
1390 | } |
1391 | ||
1392 | /******************************************************************************* | |
1393 | * | |
1394 | * FUNCTION: acpi_os_purge_cache | |
1395 | * | |
1396 | * PARAMETERS: Cache - Handle to cache object | |
1397 | * | |
1398 | * RETURN: Status | |
1399 | * | |
1400 | * DESCRIPTION: Free all objects within the requested cache. | |
1401 | * | |
1402 | ******************************************************************************/ | |
1403 | ||
4be44fcd | 1404 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1405 | { |
50dd0969 | 1406 | kmem_cache_shrink(cache); |
4be44fcd | 1407 | return (AE_OK); |
73459f73 RM |
1408 | } |
1409 | ||
1410 | /******************************************************************************* | |
1411 | * | |
1412 | * FUNCTION: acpi_os_delete_cache | |
1413 | * | |
1414 | * PARAMETERS: Cache - Handle to cache object | |
1415 | * | |
1416 | * RETURN: Status | |
1417 | * | |
1418 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1419 | * cache object. | |
1420 | * | |
1421 | ******************************************************************************/ | |
1422 | ||
4be44fcd | 1423 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1424 | { |
1a1d92c1 | 1425 | kmem_cache_destroy(cache); |
4be44fcd | 1426 | return (AE_OK); |
73459f73 RM |
1427 | } |
1428 | ||
1429 | /******************************************************************************* | |
1430 | * | |
1431 | * FUNCTION: acpi_os_release_object | |
1432 | * | |
1433 | * PARAMETERS: Cache - Handle to cache object | |
1434 | * Object - The object to be released | |
1435 | * | |
1436 | * RETURN: None | |
1437 | * | |
1438 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1439 | * the object is deleted. | |
1440 | * | |
1441 | ******************************************************************************/ | |
1442 | ||
4be44fcd | 1443 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1444 | { |
4be44fcd LB |
1445 | kmem_cache_free(cache, object); |
1446 | return (AE_OK); | |
73459f73 RM |
1447 | } |
1448 | ||
a5fe1a03 LM |
1449 | static inline int acpi_res_list_add(struct acpi_res_list *res) |
1450 | { | |
1451 | struct acpi_res_list *res_list_elem; | |
1452 | ||
1453 | list_for_each_entry(res_list_elem, &resource_list_head, | |
1454 | resource_list) { | |
1455 | ||
1456 | if (res->resource_type == res_list_elem->resource_type && | |
1457 | res->start == res_list_elem->start && | |
1458 | res->end == res_list_elem->end) { | |
1459 | ||
1460 | /* | |
1461 | * The Region(addr,len) already exist in the list, | |
1462 | * just increase the count | |
1463 | */ | |
1464 | ||
1465 | res_list_elem->count++; | |
1466 | return 0; | |
1467 | } | |
1468 | } | |
1469 | ||
1470 | res->count = 1; | |
1471 | list_add(&res->resource_list, &resource_list_head); | |
1472 | return 1; | |
1473 | } | |
1474 | ||
1475 | static inline void acpi_res_list_del(struct acpi_res_list *res) | |
1476 | { | |
1477 | struct acpi_res_list *res_list_elem; | |
1478 | ||
1479 | list_for_each_entry(res_list_elem, &resource_list_head, | |
1480 | resource_list) { | |
1481 | ||
1482 | if (res->resource_type == res_list_elem->resource_type && | |
1483 | res->start == res_list_elem->start && | |
1484 | res->end == res_list_elem->end) { | |
1485 | ||
1486 | /* | |
1487 | * If the res count is decreased to 0, | |
1488 | * remove and free it | |
1489 | */ | |
1490 | ||
1491 | if (--res_list_elem->count == 0) { | |
1492 | list_del(&res_list_elem->resource_list); | |
1493 | kfree(res_list_elem); | |
1494 | } | |
1495 | return; | |
1496 | } | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | acpi_status | |
1501 | acpi_os_invalidate_address( | |
1502 | u8 space_id, | |
1503 | acpi_physical_address address, | |
1504 | acpi_size length) | |
1505 | { | |
1506 | struct acpi_res_list res; | |
1507 | ||
1508 | switch (space_id) { | |
1509 | case ACPI_ADR_SPACE_SYSTEM_IO: | |
1510 | case ACPI_ADR_SPACE_SYSTEM_MEMORY: | |
88393161 | 1511 | /* Only interference checks against SystemIO and SystemMemory |
a5fe1a03 LM |
1512 | are needed */ |
1513 | res.start = address; | |
1514 | res.end = address + length - 1; | |
1515 | res.resource_type = space_id; | |
1516 | spin_lock(&acpi_res_lock); | |
1517 | acpi_res_list_del(&res); | |
1518 | spin_unlock(&acpi_res_lock); | |
1519 | break; | |
1520 | case ACPI_ADR_SPACE_PCI_CONFIG: | |
1521 | case ACPI_ADR_SPACE_EC: | |
1522 | case ACPI_ADR_SPACE_SMBUS: | |
1523 | case ACPI_ADR_SPACE_CMOS: | |
1524 | case ACPI_ADR_SPACE_PCI_BAR_TARGET: | |
1525 | case ACPI_ADR_SPACE_DATA_TABLE: | |
1526 | case ACPI_ADR_SPACE_FIXED_HARDWARE: | |
1527 | break; | |
1528 | } | |
1529 | return AE_OK; | |
1530 | } | |
1531 | ||
b229cf92 BM |
1532 | /****************************************************************************** |
1533 | * | |
1534 | * FUNCTION: acpi_os_validate_address | |
1535 | * | |
1536 | * PARAMETERS: space_id - ACPI space ID | |
1537 | * address - Physical address | |
1538 | * length - Address length | |
1539 | * | |
1540 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1541 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1542 | * | |
1543 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1544 | * the addresses accessed by AML operation regions. | |
1545 | * | |
1546 | *****************************************************************************/ | |
1547 | ||
1548 | acpi_status | |
1549 | acpi_os_validate_address ( | |
1550 | u8 space_id, | |
1551 | acpi_physical_address address, | |
df92e695 TR |
1552 | acpi_size length, |
1553 | char *name) | |
b229cf92 | 1554 | { |
df92e695 | 1555 | struct acpi_res_list *res; |
a5fe1a03 | 1556 | int added; |
df92e695 TR |
1557 | if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) |
1558 | return AE_OK; | |
b229cf92 | 1559 | |
df92e695 TR |
1560 | switch (space_id) { |
1561 | case ACPI_ADR_SPACE_SYSTEM_IO: | |
1562 | case ACPI_ADR_SPACE_SYSTEM_MEMORY: | |
88393161 | 1563 | /* Only interference checks against SystemIO and SystemMemory |
df92e695 TR |
1564 | are needed */ |
1565 | res = kzalloc(sizeof(struct acpi_res_list), GFP_KERNEL); | |
1566 | if (!res) | |
1567 | return AE_OK; | |
1568 | /* ACPI names are fixed to 4 bytes, still better use strlcpy */ | |
1569 | strlcpy(res->name, name, 5); | |
1570 | res->start = address; | |
1571 | res->end = address + length - 1; | |
1572 | res->resource_type = space_id; | |
1573 | spin_lock(&acpi_res_lock); | |
a5fe1a03 | 1574 | added = acpi_res_list_add(res); |
df92e695 | 1575 | spin_unlock(&acpi_res_lock); |
a5fe1a03 LM |
1576 | pr_debug("%s %s resource: start: 0x%llx, end: 0x%llx, " |
1577 | "name: %s\n", added ? "Added" : "Already exist", | |
1578 | (space_id == ACPI_ADR_SPACE_SYSTEM_IO) | |
df92e695 TR |
1579 | ? "SystemIO" : "System Memory", |
1580 | (unsigned long long)res->start, | |
1581 | (unsigned long long)res->end, | |
1582 | res->name); | |
a5fe1a03 LM |
1583 | if (!added) |
1584 | kfree(res); | |
df92e695 TR |
1585 | break; |
1586 | case ACPI_ADR_SPACE_PCI_CONFIG: | |
1587 | case ACPI_ADR_SPACE_EC: | |
1588 | case ACPI_ADR_SPACE_SMBUS: | |
1589 | case ACPI_ADR_SPACE_CMOS: | |
1590 | case ACPI_ADR_SPACE_PCI_BAR_TARGET: | |
1591 | case ACPI_ADR_SPACE_DATA_TABLE: | |
1592 | case ACPI_ADR_SPACE_FIXED_HARDWARE: | |
1593 | break; | |
1594 | } | |
1595 | return AE_OK; | |
b229cf92 | 1596 | } |
73459f73 | 1597 | #endif |
d362edaf MS |
1598 | |
1599 | acpi_status __init acpi_os_initialize(void) | |
1600 | { | |
1601 | acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block); | |
1602 | acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block); | |
1603 | acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block); | |
1604 | acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block); | |
1605 | ||
1606 | return AE_OK; | |
1607 | } | |
1608 | ||
32d47eef | 1609 | acpi_status __init acpi_os_initialize1(void) |
d362edaf | 1610 | { |
44d2588e TH |
1611 | kacpid_wq = alloc_workqueue("kacpid", 0, 1); |
1612 | kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1); | |
1613 | kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1); | |
d362edaf MS |
1614 | BUG_ON(!kacpid_wq); |
1615 | BUG_ON(!kacpi_notify_wq); | |
1616 | BUG_ON(!kacpi_hotplug_wq); | |
1bd64d42 LB |
1617 | acpi_install_interface_handler(acpi_osi_handler); |
1618 | acpi_osi_setup_late(); | |
d362edaf MS |
1619 | return AE_OK; |
1620 | } | |
1621 | ||
1622 | acpi_status acpi_os_terminate(void) | |
1623 | { | |
1624 | if (acpi_irq_handler) { | |
23fe3630 | 1625 | acpi_os_remove_interrupt_handler(acpi_gbl_FADT.sci_interrupt, |
d362edaf MS |
1626 | acpi_irq_handler); |
1627 | } | |
1628 | ||
1629 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block); | |
1630 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block); | |
1631 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block); | |
1632 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block); | |
1633 | ||
1634 | destroy_workqueue(kacpid_wq); | |
1635 | destroy_workqueue(kacpi_notify_wq); | |
1636 | destroy_workqueue(kacpi_hotplug_wq); | |
1637 | ||
1638 | return AE_OK; | |
1639 | } |