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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> |
1da177e4 | 41 | #include <linux/efi.h> |
df92e695 TR |
42 | #include <linux/ioport.h> |
43 | #include <linux/list.h> | |
f1241c87 MW |
44 | #include <linux/jiffies.h> |
45 | #include <linux/semaphore.h> | |
46 | ||
47 | #include <asm/io.h> | |
48 | #include <asm/uaccess.h> | |
49 | ||
50 | #include <acpi/acpi.h> | |
51 | #include <acpi/acpi_bus.h> | |
52 | #include <acpi/processor.h> | |
1da177e4 | 53 | |
1da177e4 | 54 | #define _COMPONENT ACPI_OS_SERVICES |
f52fd66d | 55 | ACPI_MODULE_NAME("osl"); |
1da177e4 | 56 | #define PREFIX "ACPI: " |
4be44fcd LB |
57 | struct acpi_os_dpc { |
58 | acpi_osd_exec_callback function; | |
59 | void *context; | |
65f27f38 | 60 | struct work_struct work; |
9ac61856 | 61 | int wait; |
1da177e4 LT |
62 | }; |
63 | ||
64 | #ifdef CONFIG_ACPI_CUSTOM_DSDT | |
65 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE | |
66 | #endif | |
67 | ||
68 | #ifdef ENABLE_DEBUGGER | |
69 | #include <linux/kdb.h> | |
70 | ||
71 | /* stuff for debugger support */ | |
72 | int acpi_in_debugger; | |
73 | EXPORT_SYMBOL(acpi_in_debugger); | |
74 | ||
75 | extern char line_buf[80]; | |
4be44fcd | 76 | #endif /*ENABLE_DEBUGGER */ |
1da177e4 LT |
77 | |
78 | static unsigned int acpi_irq_irq; | |
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; | |
107 | }; | |
108 | ||
109 | static LIST_HEAD(acpi_ioremaps); | |
110 | static DEFINE_SPINLOCK(acpi_ioremap_lock); | |
111 | ||
ae00d812 LB |
112 | #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ |
113 | static char osi_additional_string[OSI_STRING_LENGTH_MAX]; | |
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; | |
152 | unsigned int known:1; | |
a6e0887f | 153 | } osi_linux = { 0, 0, 0, 0}; |
f507654d | 154 | |
9a47cdb1 BH |
155 | static void __init acpi_request_region (struct acpi_generic_address *addr, |
156 | unsigned int length, char *desc) | |
157 | { | |
9a47cdb1 BH |
158 | if (!addr->address || !length) |
159 | return; | |
160 | ||
cfa806f0 | 161 | /* Resources are never freed */ |
eee3c859 | 162 | if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
cfa806f0 | 163 | request_region(addr->address, length, desc); |
eee3c859 | 164 | else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
cfa806f0 | 165 | request_mem_region(addr->address, length, desc); |
9a47cdb1 BH |
166 | } |
167 | ||
168 | static int __init acpi_reserve_resources(void) | |
169 | { | |
eee3c859 | 170 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
171 | "ACPI PM1a_EVT_BLK"); |
172 | ||
eee3c859 | 173 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
9a47cdb1 BH |
174 | "ACPI PM1b_EVT_BLK"); |
175 | ||
eee3c859 | 176 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
177 | "ACPI PM1a_CNT_BLK"); |
178 | ||
eee3c859 | 179 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
9a47cdb1 BH |
180 | "ACPI PM1b_CNT_BLK"); |
181 | ||
eee3c859 LB |
182 | if (acpi_gbl_FADT.pm_timer_length == 4) |
183 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); | |
9a47cdb1 | 184 | |
eee3c859 | 185 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
9a47cdb1 BH |
186 | "ACPI PM2_CNT_BLK"); |
187 | ||
188 | /* Length of GPE blocks must be a non-negative multiple of 2 */ | |
189 | ||
eee3c859 LB |
190 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
191 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, | |
192 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); | |
9a47cdb1 | 193 | |
eee3c859 LB |
194 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
195 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, | |
196 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); | |
9a47cdb1 BH |
197 | |
198 | return 0; | |
199 | } | |
200 | device_initcall(acpi_reserve_resources); | |
201 | ||
dd272b57 | 202 | acpi_status __init acpi_os_initialize(void) |
1da177e4 LT |
203 | { |
204 | return AE_OK; | |
205 | } | |
206 | ||
4be44fcd | 207 | acpi_status acpi_os_initialize1(void) |
1da177e4 | 208 | { |
8fec62b2 TH |
209 | kacpid_wq = create_workqueue("kacpid"); |
210 | kacpi_notify_wq = create_workqueue("kacpi_notify"); | |
211 | kacpi_hotplug_wq = create_workqueue("kacpi_hotplug"); | |
1da177e4 | 212 | BUG_ON(!kacpid_wq); |
88db5e14 | 213 | BUG_ON(!kacpi_notify_wq); |
c02256be | 214 | BUG_ON(!kacpi_hotplug_wq); |
1da177e4 LT |
215 | return AE_OK; |
216 | } | |
217 | ||
4be44fcd | 218 | acpi_status acpi_os_terminate(void) |
1da177e4 LT |
219 | { |
220 | if (acpi_irq_handler) { | |
221 | acpi_os_remove_interrupt_handler(acpi_irq_irq, | |
222 | acpi_irq_handler); | |
223 | } | |
224 | ||
225 | destroy_workqueue(kacpid_wq); | |
88db5e14 | 226 | destroy_workqueue(kacpi_notify_wq); |
c02256be | 227 | destroy_workqueue(kacpi_hotplug_wq); |
1da177e4 LT |
228 | |
229 | return AE_OK; | |
230 | } | |
231 | ||
4be44fcd | 232 | void acpi_os_printf(const char *fmt, ...) |
1da177e4 LT |
233 | { |
234 | va_list args; | |
235 | va_start(args, fmt); | |
236 | acpi_os_vprintf(fmt, args); | |
237 | va_end(args); | |
238 | } | |
4be44fcd | 239 | |
4be44fcd | 240 | void acpi_os_vprintf(const char *fmt, va_list args) |
1da177e4 LT |
241 | { |
242 | static char buffer[512]; | |
4be44fcd | 243 | |
1da177e4 LT |
244 | vsprintf(buffer, fmt, args); |
245 | ||
246 | #ifdef ENABLE_DEBUGGER | |
247 | if (acpi_in_debugger) { | |
248 | kdb_printf("%s", buffer); | |
249 | } else { | |
4d939155 | 250 | printk(KERN_CONT "%s", buffer); |
1da177e4 LT |
251 | } |
252 | #else | |
4d939155 | 253 | printk(KERN_CONT "%s", buffer); |
1da177e4 LT |
254 | #endif |
255 | } | |
256 | ||
ad71860a | 257 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
1da177e4 LT |
258 | { |
259 | if (efi_enabled) { | |
b2c99e3c | 260 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
ad71860a | 261 | return efi.acpi20; |
b2c99e3c | 262 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
ad71860a | 263 | return efi.acpi; |
1da177e4 | 264 | else { |
4be44fcd LB |
265 | printk(KERN_ERR PREFIX |
266 | "System description tables not found\n"); | |
ad71860a | 267 | return 0; |
1da177e4 | 268 | } |
239665a3 LB |
269 | } else { |
270 | acpi_physical_address pa = 0; | |
271 | ||
272 | acpi_find_root_pointer(&pa); | |
273 | return pa; | |
274 | } | |
1da177e4 LT |
275 | } |
276 | ||
620242ae MS |
277 | /* Must be called with 'acpi_ioremap_lock' lock held. */ |
278 | static void __iomem * | |
279 | acpi_map_vaddr_lookup(acpi_physical_address phys, acpi_size size) | |
280 | { | |
281 | struct acpi_ioremap *map; | |
282 | ||
283 | list_for_each_entry(map, &acpi_ioremaps, list) | |
284 | if (map->phys <= phys && | |
285 | phys + size <= map->phys + map->size) | |
286 | return map->virt + (phys - map->phys); | |
287 | ||
288 | return NULL; | |
289 | } | |
290 | ||
291 | /* Must be called with 'acpi_ioremap_lock' lock held. */ | |
292 | static struct acpi_ioremap * | |
293 | acpi_map_lookup_virt(void __iomem *virt, acpi_size size) | |
294 | { | |
295 | struct acpi_ioremap *map; | |
296 | ||
297 | list_for_each_entry(map, &acpi_ioremaps, list) | |
298 | if (map->virt == virt && map->size == size) | |
299 | return map; | |
300 | ||
301 | return NULL; | |
302 | } | |
303 | ||
2fdf0741 JB |
304 | void __iomem *__init_refok |
305 | acpi_os_map_memory(acpi_physical_address phys, acpi_size size) | |
1da177e4 | 306 | { |
620242ae MS |
307 | struct acpi_ioremap *map; |
308 | unsigned long flags; | |
309 | void __iomem *virt; | |
310 | ||
9f4fd61f BH |
311 | if (phys > ULONG_MAX) { |
312 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); | |
70c0846e | 313 | return NULL; |
1da177e4 | 314 | } |
620242ae MS |
315 | |
316 | if (!acpi_gbl_permanent_mmap) | |
ad71860a | 317 | return __acpi_map_table((unsigned long)phys, size); |
620242ae MS |
318 | |
319 | map = kzalloc(sizeof(*map), GFP_KERNEL); | |
320 | if (!map) | |
321 | return NULL; | |
322 | ||
323 | virt = ioremap(phys, size); | |
324 | if (!virt) { | |
325 | kfree(map); | |
326 | return NULL; | |
327 | } | |
328 | ||
329 | INIT_LIST_HEAD(&map->list); | |
330 | map->virt = virt; | |
331 | map->phys = phys; | |
332 | map->size = size; | |
333 | ||
334 | spin_lock_irqsave(&acpi_ioremap_lock, flags); | |
335 | list_add_tail(&map->list, &acpi_ioremaps); | |
336 | spin_unlock_irqrestore(&acpi_ioremap_lock, flags); | |
337 | ||
338 | return virt; | |
1da177e4 | 339 | } |
55a82ab3 | 340 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
1da177e4 | 341 | |
0d3a9cf5 | 342 | void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
1da177e4 | 343 | { |
620242ae MS |
344 | struct acpi_ioremap *map; |
345 | unsigned long flags; | |
346 | ||
347 | if (!acpi_gbl_permanent_mmap) { | |
7d97277b | 348 | __acpi_unmap_table(virt, size); |
620242ae MS |
349 | return; |
350 | } | |
351 | ||
352 | spin_lock_irqsave(&acpi_ioremap_lock, flags); | |
353 | map = acpi_map_lookup_virt(virt, size); | |
354 | if (!map) { | |
355 | spin_unlock_irqrestore(&acpi_ioremap_lock, flags); | |
356 | printk(KERN_ERR PREFIX "%s: bad address %p\n", __func__, virt); | |
357 | dump_stack(); | |
358 | return; | |
359 | } | |
360 | ||
361 | list_del(&map->list); | |
362 | spin_unlock_irqrestore(&acpi_ioremap_lock, flags); | |
363 | ||
364 | iounmap(map->virt); | |
365 | kfree(map); | |
1da177e4 | 366 | } |
55a82ab3 | 367 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
1da177e4 | 368 | |
0d3a9cf5 | 369 | void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
7d97277b YL |
370 | { |
371 | if (!acpi_gbl_permanent_mmap) | |
372 | __acpi_unmap_table(virt, size); | |
373 | } | |
374 | ||
29718521 MS |
375 | int acpi_os_map_generic_address(struct acpi_generic_address *addr) |
376 | { | |
377 | void __iomem *virt; | |
378 | ||
379 | if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) | |
380 | return 0; | |
381 | ||
382 | if (!addr->address || !addr->bit_width) | |
383 | return -EINVAL; | |
384 | ||
385 | virt = acpi_os_map_memory(addr->address, addr->bit_width / 8); | |
386 | if (!virt) | |
387 | return -EIO; | |
388 | ||
389 | return 0; | |
390 | } | |
391 | EXPORT_SYMBOL_GPL(acpi_os_map_generic_address); | |
392 | ||
393 | void acpi_os_unmap_generic_address(struct acpi_generic_address *addr) | |
394 | { | |
395 | void __iomem *virt; | |
396 | unsigned long flags; | |
397 | acpi_size size = addr->bit_width / 8; | |
398 | ||
399 | if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) | |
400 | return; | |
401 | ||
402 | if (!addr->address || !addr->bit_width) | |
403 | return; | |
404 | ||
405 | spin_lock_irqsave(&acpi_ioremap_lock, flags); | |
406 | virt = acpi_map_vaddr_lookup(addr->address, size); | |
407 | spin_unlock_irqrestore(&acpi_ioremap_lock, flags); | |
408 | ||
409 | acpi_os_unmap_memory(virt, size); | |
410 | } | |
411 | EXPORT_SYMBOL_GPL(acpi_os_unmap_generic_address); | |
412 | ||
1da177e4 LT |
413 | #ifdef ACPI_FUTURE_USAGE |
414 | acpi_status | |
4be44fcd | 415 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
1da177e4 | 416 | { |
4be44fcd | 417 | if (!phys || !virt) |
1da177e4 LT |
418 | return AE_BAD_PARAMETER; |
419 | ||
420 | *phys = virt_to_phys(virt); | |
421 | ||
422 | return AE_OK; | |
423 | } | |
424 | #endif | |
425 | ||
426 | #define ACPI_MAX_OVERRIDE_LEN 100 | |
427 | ||
428 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; | |
429 | ||
430 | acpi_status | |
4be44fcd LB |
431 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
432 | acpi_string * new_val) | |
1da177e4 LT |
433 | { |
434 | if (!init_val || !new_val) | |
435 | return AE_BAD_PARAMETER; | |
436 | ||
437 | *new_val = NULL; | |
4be44fcd | 438 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
1da177e4 | 439 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
4be44fcd | 440 | acpi_os_name); |
1da177e4 LT |
441 | *new_val = acpi_os_name; |
442 | } | |
443 | ||
444 | return AE_OK; | |
445 | } | |
446 | ||
447 | acpi_status | |
4be44fcd LB |
448 | acpi_os_table_override(struct acpi_table_header * existing_table, |
449 | struct acpi_table_header ** new_table) | |
1da177e4 LT |
450 | { |
451 | if (!existing_table || !new_table) | |
452 | return AE_BAD_PARAMETER; | |
453 | ||
71fc47a9 MG |
454 | *new_table = NULL; |
455 | ||
1da177e4 LT |
456 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
457 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) | |
4be44fcd | 458 | *new_table = (struct acpi_table_header *)AmlCode; |
1da177e4 | 459 | #endif |
6ed31e92 ÉP |
460 | if (*new_table != NULL) { |
461 | printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], " | |
462 | "this is unsafe: tainting kernel\n", | |
463 | existing_table->signature, | |
464 | existing_table->oem_table_id); | |
465 | add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); | |
466 | } | |
1da177e4 LT |
467 | return AE_OK; |
468 | } | |
469 | ||
7d12e780 | 470 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
1da177e4 | 471 | { |
5229e87d LB |
472 | u32 handled; |
473 | ||
474 | handled = (*acpi_irq_handler) (acpi_irq_context); | |
475 | ||
476 | if (handled) { | |
477 | acpi_irq_handled++; | |
478 | return IRQ_HANDLED; | |
88bea188 LB |
479 | } else { |
480 | acpi_irq_not_handled++; | |
5229e87d | 481 | return IRQ_NONE; |
88bea188 | 482 | } |
1da177e4 LT |
483 | } |
484 | ||
485 | acpi_status | |
4be44fcd LB |
486 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
487 | void *context) | |
1da177e4 LT |
488 | { |
489 | unsigned int irq; | |
490 | ||
5229e87d LB |
491 | acpi_irq_stats_init(); |
492 | ||
1da177e4 LT |
493 | /* |
494 | * Ignore the GSI from the core, and use the value in our copy of the | |
495 | * FADT. It may not be the same if an interrupt source override exists | |
496 | * for the SCI. | |
497 | */ | |
cee324b1 | 498 | gsi = acpi_gbl_FADT.sci_interrupt; |
1da177e4 LT |
499 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
500 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", | |
501 | gsi); | |
502 | return AE_OK; | |
503 | } | |
504 | ||
505 | acpi_irq_handler = handler; | |
506 | acpi_irq_context = context; | |
dace1453 | 507 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
1da177e4 LT |
508 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
509 | return AE_NOT_ACQUIRED; | |
510 | } | |
511 | acpi_irq_irq = irq; | |
512 | ||
513 | return AE_OK; | |
514 | } | |
515 | ||
4be44fcd | 516 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
1da177e4 LT |
517 | { |
518 | if (irq) { | |
519 | free_irq(irq, acpi_irq); | |
520 | acpi_irq_handler = NULL; | |
521 | acpi_irq_irq = 0; | |
522 | } | |
523 | ||
524 | return AE_OK; | |
525 | } | |
526 | ||
527 | /* | |
528 | * Running in interpreter thread context, safe to sleep | |
529 | */ | |
530 | ||
439913ff | 531 | void acpi_os_sleep(u64 ms) |
1da177e4 | 532 | { |
01a527ec | 533 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
1da177e4 | 534 | } |
4be44fcd | 535 | |
4be44fcd | 536 | void acpi_os_stall(u32 us) |
1da177e4 LT |
537 | { |
538 | while (us) { | |
539 | u32 delay = 1000; | |
540 | ||
541 | if (delay > us) | |
542 | delay = us; | |
543 | udelay(delay); | |
544 | touch_nmi_watchdog(); | |
545 | us -= delay; | |
546 | } | |
547 | } | |
4be44fcd | 548 | |
1da177e4 LT |
549 | /* |
550 | * Support ACPI 3.0 AML Timer operand | |
551 | * Returns 64-bit free-running, monotonically increasing timer | |
552 | * with 100ns granularity | |
553 | */ | |
4be44fcd | 554 | u64 acpi_os_get_timer(void) |
1da177e4 LT |
555 | { |
556 | static u64 t; | |
557 | ||
558 | #ifdef CONFIG_HPET | |
559 | /* TBD: use HPET if available */ | |
560 | #endif | |
561 | ||
562 | #ifdef CONFIG_X86_PM_TIMER | |
563 | /* TBD: default to PM timer if HPET was not available */ | |
564 | #endif | |
565 | if (!t) | |
566 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); | |
567 | ||
568 | return ++t; | |
569 | } | |
570 | ||
4be44fcd | 571 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
1da177e4 LT |
572 | { |
573 | u32 dummy; | |
574 | ||
575 | if (!value) | |
576 | value = &dummy; | |
577 | ||
49fbabf5 ZY |
578 | *value = 0; |
579 | if (width <= 8) { | |
4be44fcd | 580 | *(u8 *) value = inb(port); |
49fbabf5 | 581 | } else if (width <= 16) { |
4be44fcd | 582 | *(u16 *) value = inw(port); |
49fbabf5 | 583 | } else if (width <= 32) { |
4be44fcd | 584 | *(u32 *) value = inl(port); |
49fbabf5 | 585 | } else { |
1da177e4 LT |
586 | BUG(); |
587 | } | |
588 | ||
589 | return AE_OK; | |
590 | } | |
4be44fcd | 591 | |
1da177e4 LT |
592 | EXPORT_SYMBOL(acpi_os_read_port); |
593 | ||
4be44fcd | 594 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
1da177e4 | 595 | { |
49fbabf5 | 596 | if (width <= 8) { |
1da177e4 | 597 | outb(value, port); |
49fbabf5 | 598 | } else if (width <= 16) { |
1da177e4 | 599 | outw(value, port); |
49fbabf5 | 600 | } else if (width <= 32) { |
1da177e4 | 601 | outl(value, port); |
49fbabf5 | 602 | } else { |
1da177e4 LT |
603 | BUG(); |
604 | } | |
605 | ||
606 | return AE_OK; | |
607 | } | |
4be44fcd | 608 | |
1da177e4 LT |
609 | EXPORT_SYMBOL(acpi_os_write_port); |
610 | ||
611 | acpi_status | |
4be44fcd | 612 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
1da177e4 | 613 | { |
4be44fcd LB |
614 | u32 dummy; |
615 | void __iomem *virt_addr; | |
620242ae MS |
616 | int size = width / 8, unmap = 0; |
617 | unsigned long flags; | |
618 | ||
619 | spin_lock_irqsave(&acpi_ioremap_lock, flags); | |
620 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); | |
621 | spin_unlock_irqrestore(&acpi_ioremap_lock, flags); | |
622 | if (!virt_addr) { | |
623 | virt_addr = ioremap(phys_addr, size); | |
624 | unmap = 1; | |
625 | } | |
1da177e4 LT |
626 | if (!value) |
627 | value = &dummy; | |
628 | ||
629 | switch (width) { | |
630 | case 8: | |
4be44fcd | 631 | *(u8 *) value = readb(virt_addr); |
1da177e4 LT |
632 | break; |
633 | case 16: | |
4be44fcd | 634 | *(u16 *) value = readw(virt_addr); |
1da177e4 LT |
635 | break; |
636 | case 32: | |
4be44fcd | 637 | *(u32 *) value = readl(virt_addr); |
1da177e4 LT |
638 | break; |
639 | default: | |
640 | BUG(); | |
641 | } | |
642 | ||
620242ae MS |
643 | if (unmap) |
644 | iounmap(virt_addr); | |
1da177e4 LT |
645 | |
646 | return AE_OK; | |
647 | } | |
648 | ||
649 | acpi_status | |
4be44fcd | 650 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
1da177e4 | 651 | { |
4be44fcd | 652 | void __iomem *virt_addr; |
620242ae MS |
653 | int size = width / 8, unmap = 0; |
654 | unsigned long flags; | |
655 | ||
656 | spin_lock_irqsave(&acpi_ioremap_lock, flags); | |
657 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); | |
658 | spin_unlock_irqrestore(&acpi_ioremap_lock, flags); | |
659 | if (!virt_addr) { | |
660 | virt_addr = ioremap(phys_addr, size); | |
661 | unmap = 1; | |
662 | } | |
1da177e4 LT |
663 | |
664 | switch (width) { | |
665 | case 8: | |
666 | writeb(value, virt_addr); | |
667 | break; | |
668 | case 16: | |
669 | writew(value, virt_addr); | |
670 | break; | |
671 | case 32: | |
672 | writel(value, virt_addr); | |
673 | break; | |
674 | default: | |
675 | BUG(); | |
676 | } | |
677 | ||
620242ae MS |
678 | if (unmap) |
679 | iounmap(virt_addr); | |
1da177e4 LT |
680 | |
681 | return AE_OK; | |
682 | } | |
683 | ||
1da177e4 | 684 | acpi_status |
4be44fcd | 685 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
10270d48 | 686 | u32 *value, u32 width) |
1da177e4 LT |
687 | { |
688 | int result, size; | |
689 | ||
690 | if (!value) | |
691 | return AE_BAD_PARAMETER; | |
692 | ||
693 | switch (width) { | |
694 | case 8: | |
695 | size = 1; | |
696 | break; | |
697 | case 16: | |
698 | size = 2; | |
699 | break; | |
700 | case 32: | |
701 | size = 4; | |
702 | break; | |
703 | default: | |
704 | return AE_ERROR; | |
705 | } | |
706 | ||
b6ce068a MW |
707 | result = raw_pci_read(pci_id->segment, pci_id->bus, |
708 | PCI_DEVFN(pci_id->device, pci_id->function), | |
709 | reg, size, value); | |
1da177e4 LT |
710 | |
711 | return (result ? AE_ERROR : AE_OK); | |
712 | } | |
4be44fcd | 713 | |
1da177e4 | 714 | acpi_status |
4be44fcd | 715 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
439913ff | 716 | u64 value, u32 width) |
1da177e4 LT |
717 | { |
718 | int result, size; | |
719 | ||
720 | switch (width) { | |
721 | case 8: | |
722 | size = 1; | |
723 | break; | |
724 | case 16: | |
725 | size = 2; | |
726 | break; | |
727 | case 32: | |
728 | size = 4; | |
729 | break; | |
730 | default: | |
731 | return AE_ERROR; | |
732 | } | |
733 | ||
b6ce068a MW |
734 | result = raw_pci_write(pci_id->segment, pci_id->bus, |
735 | PCI_DEVFN(pci_id->device, pci_id->function), | |
736 | reg, size, value); | |
1da177e4 LT |
737 | |
738 | return (result ? AE_ERROR : AE_OK); | |
739 | } | |
740 | ||
741 | /* TODO: Change code to take advantage of driver model more */ | |
4be44fcd LB |
742 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
743 | acpi_handle chandle, /* current node */ | |
744 | struct acpi_pci_id **id, | |
745 | int *is_bridge, u8 * bus_number) | |
1da177e4 | 746 | { |
4be44fcd LB |
747 | acpi_handle handle; |
748 | struct acpi_pci_id *pci_id = *id; | |
749 | acpi_status status; | |
27663c58 | 750 | unsigned long long temp; |
4be44fcd | 751 | acpi_object_type type; |
1da177e4 LT |
752 | |
753 | acpi_get_parent(chandle, &handle); | |
754 | if (handle != rhandle) { | |
4be44fcd LB |
755 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
756 | bus_number); | |
1da177e4 LT |
757 | |
758 | status = acpi_get_type(handle, &type); | |
4be44fcd | 759 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
1da177e4 LT |
760 | return; |
761 | ||
27663c58 | 762 | status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, |
4be44fcd | 763 | &temp); |
1da177e4 | 764 | if (ACPI_SUCCESS(status)) { |
10270d48 | 765 | u32 val; |
4be44fcd LB |
766 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
767 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); | |
1da177e4 LT |
768 | |
769 | if (*is_bridge) | |
770 | pci_id->bus = *bus_number; | |
771 | ||
772 | /* any nicer way to get bus number of bridge ? */ | |
4be44fcd | 773 | status = |
10270d48 | 774 | acpi_os_read_pci_configuration(pci_id, 0x0e, &val, |
4be44fcd LB |
775 | 8); |
776 | if (ACPI_SUCCESS(status) | |
10270d48 | 777 | && ((val & 0x7f) == 1 || (val & 0x7f) == 2)) { |
4be44fcd LB |
778 | status = |
779 | acpi_os_read_pci_configuration(pci_id, 0x18, | |
10270d48 | 780 | &val, 8); |
1da177e4 LT |
781 | if (!ACPI_SUCCESS(status)) { |
782 | /* Certainly broken... FIX ME */ | |
783 | return; | |
784 | } | |
785 | *is_bridge = 1; | |
10270d48 | 786 | pci_id->bus = val; |
4be44fcd LB |
787 | status = |
788 | acpi_os_read_pci_configuration(pci_id, 0x19, | |
10270d48 | 789 | &val, 8); |
1da177e4 | 790 | if (ACPI_SUCCESS(status)) { |
10270d48 | 791 | *bus_number = val; |
1da177e4 LT |
792 | } |
793 | } else | |
794 | *is_bridge = 0; | |
795 | } | |
796 | } | |
797 | } | |
798 | ||
4be44fcd LB |
799 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
800 | acpi_handle chandle, /* current node */ | |
801 | struct acpi_pci_id **id) | |
1da177e4 LT |
802 | { |
803 | int is_bridge = 1; | |
804 | u8 bus_number = (*id)->bus; | |
805 | ||
806 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); | |
807 | } | |
808 | ||
65f27f38 | 809 | static void acpi_os_execute_deferred(struct work_struct *work) |
88db5e14 AS |
810 | { |
811 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); | |
88db5e14 | 812 | |
9ac61856 BH |
813 | if (dpc->wait) |
814 | acpi_os_wait_events_complete(NULL); | |
19cd847a ZR |
815 | |
816 | dpc->function(dpc->context); | |
817 | kfree(dpc); | |
19cd847a ZR |
818 | } |
819 | ||
b8d35192 AS |
820 | /******************************************************************************* |
821 | * | |
822 | * FUNCTION: acpi_os_execute | |
823 | * | |
824 | * PARAMETERS: Type - Type of the callback | |
825 | * Function - Function to be executed | |
826 | * Context - Function parameters | |
827 | * | |
828 | * RETURN: Status | |
829 | * | |
830 | * DESCRIPTION: Depending on type, either queues function for deferred execution or | |
831 | * immediately executes function on a separate thread. | |
832 | * | |
833 | ******************************************************************************/ | |
834 | ||
19cd847a ZR |
835 | static acpi_status __acpi_os_execute(acpi_execute_type type, |
836 | acpi_osd_exec_callback function, void *context, int hp) | |
1da177e4 | 837 | { |
4be44fcd LB |
838 | acpi_status status = AE_OK; |
839 | struct acpi_os_dpc *dpc; | |
17bc54ee | 840 | struct workqueue_struct *queue; |
19cd847a | 841 | int ret; |
72945b2b LB |
842 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
843 | "Scheduling function [%p(%p)] for deferred execution.\n", | |
844 | function, context)); | |
1da177e4 | 845 | |
1da177e4 LT |
846 | /* |
847 | * Allocate/initialize DPC structure. Note that this memory will be | |
65f27f38 | 848 | * freed by the callee. The kernel handles the work_struct list in a |
1da177e4 LT |
849 | * way that allows us to also free its memory inside the callee. |
850 | * Because we may want to schedule several tasks with different | |
851 | * parameters we can't use the approach some kernel code uses of | |
65f27f38 | 852 | * having a static work_struct. |
1da177e4 | 853 | */ |
72945b2b | 854 | |
65f27f38 | 855 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
1da177e4 | 856 | if (!dpc) |
889c78be | 857 | return AE_NO_MEMORY; |
b976fe19 | 858 | |
1da177e4 LT |
859 | dpc->function = function; |
860 | dpc->context = context; | |
b976fe19 | 861 | |
c02256be ZR |
862 | /* |
863 | * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq | |
864 | * because the hotplug code may call driver .remove() functions, | |
865 | * which invoke flush_scheduled_work/acpi_os_wait_events_complete | |
866 | * to flush these workqueues. | |
867 | */ | |
868 | queue = hp ? kacpi_hotplug_wq : | |
869 | (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq); | |
9ac61856 | 870 | dpc->wait = hp ? 1 : 0; |
bc73675b ZR |
871 | |
872 | if (queue == kacpi_hotplug_wq) | |
873 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
874 | else if (queue == kacpi_notify_wq) | |
875 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
876 | else | |
877 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); | |
878 | ||
8fec62b2 TH |
879 | /* |
880 | * On some machines, a software-initiated SMI causes corruption unless | |
881 | * the SMI runs on CPU 0. An SMI can be initiated by any AML, but | |
882 | * typically it's done in GPE-related methods that are run via | |
883 | * workqueues, so we can avoid the known corruption cases by always | |
884 | * queueing on CPU 0. | |
885 | */ | |
886 | ret = queue_work_on(0, queue, &dpc->work); | |
19cd847a ZR |
887 | |
888 | if (!ret) { | |
55ac9a01 LM |
889 | printk(KERN_ERR PREFIX |
890 | "Call to queue_work() failed.\n"); | |
17bc54ee AS |
891 | status = AE_ERROR; |
892 | kfree(dpc); | |
1da177e4 | 893 | } |
889c78be | 894 | return status; |
1da177e4 | 895 | } |
4be44fcd | 896 | |
19cd847a ZR |
897 | acpi_status acpi_os_execute(acpi_execute_type type, |
898 | acpi_osd_exec_callback function, void *context) | |
899 | { | |
900 | return __acpi_os_execute(type, function, context, 0); | |
901 | } | |
b8d35192 | 902 | EXPORT_SYMBOL(acpi_os_execute); |
1da177e4 | 903 | |
19cd847a ZR |
904 | acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function, |
905 | void *context) | |
906 | { | |
907 | return __acpi_os_execute(0, function, context, 1); | |
908 | } | |
909 | ||
4be44fcd | 910 | void acpi_os_wait_events_complete(void *context) |
1da177e4 LT |
911 | { |
912 | flush_workqueue(kacpid_wq); | |
2f67a069 | 913 | flush_workqueue(kacpi_notify_wq); |
1da177e4 | 914 | } |
4be44fcd | 915 | |
1da177e4 LT |
916 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
917 | ||
918 | /* | |
919 | * Allocate the memory for a spinlock and initialize it. | |
920 | */ | |
967440e3 | 921 | acpi_status acpi_os_create_lock(acpi_spinlock * handle) |
1da177e4 | 922 | { |
967440e3 | 923 | spin_lock_init(*handle); |
1da177e4 | 924 | |
d550d98d | 925 | return AE_OK; |
1da177e4 LT |
926 | } |
927 | ||
1da177e4 LT |
928 | /* |
929 | * Deallocate the memory for a spinlock. | |
930 | */ | |
967440e3 | 931 | void acpi_os_delete_lock(acpi_spinlock handle) |
1da177e4 | 932 | { |
d550d98d | 933 | return; |
1da177e4 LT |
934 | } |
935 | ||
1da177e4 | 936 | acpi_status |
4be44fcd | 937 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
1da177e4 | 938 | { |
4be44fcd | 939 | struct semaphore *sem = NULL; |
1da177e4 | 940 | |
1da177e4 LT |
941 | sem = acpi_os_allocate(sizeof(struct semaphore)); |
942 | if (!sem) | |
d550d98d | 943 | return AE_NO_MEMORY; |
1da177e4 LT |
944 | memset(sem, 0, sizeof(struct semaphore)); |
945 | ||
946 | sema_init(sem, initial_units); | |
947 | ||
4be44fcd | 948 | *handle = (acpi_handle *) sem; |
1da177e4 | 949 | |
4be44fcd LB |
950 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
951 | *handle, initial_units)); | |
1da177e4 | 952 | |
d550d98d | 953 | return AE_OK; |
1da177e4 | 954 | } |
1da177e4 | 955 | |
1da177e4 LT |
956 | /* |
957 | * TODO: A better way to delete semaphores? Linux doesn't have a | |
958 | * 'delete_semaphore()' function -- may result in an invalid | |
959 | * pointer dereference for non-synchronized consumers. Should | |
960 | * we at least check for blocked threads and signal/cancel them? | |
961 | */ | |
962 | ||
4be44fcd | 963 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
1da177e4 | 964 | { |
4be44fcd | 965 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 966 | |
1da177e4 | 967 | if (!sem) |
d550d98d | 968 | return AE_BAD_PARAMETER; |
1da177e4 | 969 | |
4be44fcd | 970 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
1da177e4 | 971 | |
f1241c87 | 972 | BUG_ON(!list_empty(&sem->wait_list)); |
02438d87 | 973 | kfree(sem); |
4be44fcd | 974 | sem = NULL; |
1da177e4 | 975 | |
d550d98d | 976 | return AE_OK; |
1da177e4 | 977 | } |
1da177e4 | 978 | |
1da177e4 | 979 | /* |
1da177e4 LT |
980 | * TODO: Support for units > 1? |
981 | */ | |
4be44fcd | 982 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
1da177e4 | 983 | { |
4be44fcd LB |
984 | acpi_status status = AE_OK; |
985 | struct semaphore *sem = (struct semaphore *)handle; | |
f1241c87 | 986 | long jiffies; |
4be44fcd | 987 | int ret = 0; |
1da177e4 | 988 | |
1da177e4 | 989 | if (!sem || (units < 1)) |
d550d98d | 990 | return AE_BAD_PARAMETER; |
1da177e4 LT |
991 | |
992 | if (units > 1) | |
d550d98d | 993 | return AE_SUPPORT; |
1da177e4 | 994 | |
4be44fcd LB |
995 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
996 | handle, units, timeout)); | |
1da177e4 | 997 | |
f1241c87 MW |
998 | if (timeout == ACPI_WAIT_FOREVER) |
999 | jiffies = MAX_SCHEDULE_TIMEOUT; | |
1000 | else | |
1001 | jiffies = msecs_to_jiffies(timeout); | |
1002 | ||
1003 | ret = down_timeout(sem, jiffies); | |
1004 | if (ret) | |
1005 | status = AE_TIME; | |
1da177e4 LT |
1006 | |
1007 | if (ACPI_FAILURE(status)) { | |
9e7e2c04 | 1008 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
a6fc6720 | 1009 | "Failed to acquire semaphore[%p|%d|%d], %s", |
4be44fcd LB |
1010 | handle, units, timeout, |
1011 | acpi_format_exception(status))); | |
1012 | } else { | |
1013 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, | |
a6fc6720 | 1014 | "Acquired semaphore[%p|%d|%d]", handle, |
4be44fcd | 1015 | units, timeout)); |
1da177e4 LT |
1016 | } |
1017 | ||
d550d98d | 1018 | return status; |
1da177e4 | 1019 | } |
1da177e4 | 1020 | |
1da177e4 LT |
1021 | /* |
1022 | * TODO: Support for units > 1? | |
1023 | */ | |
4be44fcd | 1024 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
1da177e4 | 1025 | { |
4be44fcd | 1026 | struct semaphore *sem = (struct semaphore *)handle; |
1da177e4 | 1027 | |
1da177e4 | 1028 | if (!sem || (units < 1)) |
d550d98d | 1029 | return AE_BAD_PARAMETER; |
1da177e4 LT |
1030 | |
1031 | if (units > 1) | |
d550d98d | 1032 | return AE_SUPPORT; |
1da177e4 | 1033 | |
4be44fcd LB |
1034 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
1035 | units)); | |
1da177e4 LT |
1036 | |
1037 | up(sem); | |
1038 | ||
d550d98d | 1039 | return AE_OK; |
1da177e4 | 1040 | } |
4be44fcd | 1041 | |
1da177e4 | 1042 | #ifdef ACPI_FUTURE_USAGE |
4be44fcd | 1043 | u32 acpi_os_get_line(char *buffer) |
1da177e4 LT |
1044 | { |
1045 | ||
1046 | #ifdef ENABLE_DEBUGGER | |
1047 | if (acpi_in_debugger) { | |
1048 | u32 chars; | |
1049 | ||
1050 | kdb_read(buffer, sizeof(line_buf)); | |
1051 | ||
1052 | /* remove the CR kdb includes */ | |
1053 | chars = strlen(buffer) - 1; | |
1054 | buffer[chars] = '\0'; | |
1055 | } | |
1056 | #endif | |
1057 | ||
1058 | return 0; | |
1059 | } | |
4be44fcd | 1060 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 1061 | |
4be44fcd | 1062 | acpi_status acpi_os_signal(u32 function, void *info) |
1da177e4 | 1063 | { |
4be44fcd | 1064 | switch (function) { |
1da177e4 LT |
1065 | case ACPI_SIGNAL_FATAL: |
1066 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); | |
1067 | break; | |
1068 | case ACPI_SIGNAL_BREAKPOINT: | |
1069 | /* | |
1070 | * AML Breakpoint | |
1071 | * ACPI spec. says to treat it as a NOP unless | |
1072 | * you are debugging. So if/when we integrate | |
1073 | * AML debugger into the kernel debugger its | |
1074 | * hook will go here. But until then it is | |
1075 | * not useful to print anything on breakpoints. | |
1076 | */ | |
1077 | break; | |
1078 | default: | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | return AE_OK; | |
1083 | } | |
4be44fcd | 1084 | |
4be44fcd | 1085 | static int __init acpi_os_name_setup(char *str) |
1da177e4 LT |
1086 | { |
1087 | char *p = acpi_os_name; | |
4be44fcd | 1088 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
1da177e4 LT |
1089 | |
1090 | if (!str || !*str) | |
1091 | return 0; | |
1092 | ||
1093 | for (; count-- && str && *str; str++) { | |
1094 | if (isalnum(*str) || *str == ' ' || *str == ':') | |
1095 | *p++ = *str; | |
1096 | else if (*str == '\'' || *str == '"') | |
1097 | continue; | |
1098 | else | |
1099 | break; | |
1100 | } | |
1101 | *p = 0; | |
1102 | ||
1103 | return 1; | |
4be44fcd | 1104 | |
1da177e4 LT |
1105 | } |
1106 | ||
1107 | __setup("acpi_os_name=", acpi_os_name_setup); | |
1108 | ||
d4b7dc49 LB |
1109 | static void __init set_osi_linux(unsigned int enable) |
1110 | { | |
1111 | if (osi_linux.enable != enable) { | |
1112 | osi_linux.enable = enable; | |
1113 | printk(KERN_NOTICE PREFIX "%sed _OSI(Linux)\n", | |
1114 | enable ? "Add": "Delet"); | |
1115 | } | |
1116 | return; | |
1117 | } | |
1118 | ||
1119 | static void __init acpi_cmdline_osi_linux(unsigned int enable) | |
1120 | { | |
1121 | osi_linux.cmdline = 1; /* cmdline set the default */ | |
1122 | set_osi_linux(enable); | |
1123 | ||
1124 | return; | |
1125 | } | |
1126 | ||
1127 | void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) | |
1128 | { | |
1129 | osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ | |
1130 | ||
1131 | printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); | |
1132 | ||
1133 | if (enable == -1) | |
1134 | return; | |
1135 | ||
1136 | osi_linux.known = 1; /* DMI knows which OSI(Linux) default needed */ | |
f507654d | 1137 | |
d4b7dc49 | 1138 | set_osi_linux(enable); |
f507654d | 1139 | |
f507654d LB |
1140 | return; |
1141 | } | |
1142 | ||
1da177e4 | 1143 | /* |
ae00d812 LB |
1144 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
1145 | * | |
1da177e4 | 1146 | * empty string disables _OSI |
ae00d812 LB |
1147 | * string starting with '!' disables that string |
1148 | * otherwise string is added to list, augmenting built-in strings | |
1da177e4 | 1149 | */ |
46c1fbdb | 1150 | int __init acpi_osi_setup(char *str) |
1da177e4 LT |
1151 | { |
1152 | if (str == NULL || *str == '\0') { | |
1153 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); | |
1154 | acpi_gbl_create_osi_method = FALSE; | |
aa2e09da | 1155 | } else if (!strcmp("!Linux", str)) { |
d4b7dc49 | 1156 | acpi_cmdline_osi_linux(0); /* !enable */ |
ae00d812 LB |
1157 | } else if (*str == '!') { |
1158 | if (acpi_osi_invalidate(++str) == AE_OK) | |
1159 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); | |
f507654d | 1160 | } else if (!strcmp("Linux", str)) { |
d4b7dc49 | 1161 | acpi_cmdline_osi_linux(1); /* enable */ |
ae00d812 LB |
1162 | } else if (*osi_additional_string == '\0') { |
1163 | strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX); | |
1164 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); | |
1da177e4 LT |
1165 | } |
1166 | ||
1167 | return 1; | |
1168 | } | |
1169 | ||
1170 | __setup("acpi_osi=", acpi_osi_setup); | |
1171 | ||
1172 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ | |
4be44fcd | 1173 | static int __init acpi_serialize_setup(char *str) |
1da177e4 LT |
1174 | { |
1175 | printk(KERN_INFO PREFIX "serialize enabled\n"); | |
1176 | ||
1177 | acpi_gbl_all_methods_serialized = TRUE; | |
1178 | ||
1179 | return 1; | |
1180 | } | |
1181 | ||
1182 | __setup("acpi_serialize", acpi_serialize_setup); | |
1183 | ||
df92e695 TR |
1184 | /* Check of resource interference between native drivers and ACPI |
1185 | * OperationRegions (SystemIO and System Memory only). | |
1186 | * IO ports and memory declared in ACPI might be used by the ACPI subsystem | |
1187 | * in arbitrary AML code and can interfere with legacy drivers. | |
1188 | * acpi_enforce_resources= can be set to: | |
1189 | * | |
7e90560c | 1190 | * - strict (default) (2) |
df92e695 | 1191 | * -> further driver trying to access the resources will not load |
7e90560c | 1192 | * - lax (1) |
df92e695 TR |
1193 | * -> further driver trying to access the resources will load, but you |
1194 | * get a system message that something might go wrong... | |
1195 | * | |
1196 | * - no (0) | |
1197 | * -> ACPI Operation Region resources will not be registered | |
1198 | * | |
1199 | */ | |
1200 | #define ENFORCE_RESOURCES_STRICT 2 | |
1201 | #define ENFORCE_RESOURCES_LAX 1 | |
1202 | #define ENFORCE_RESOURCES_NO 0 | |
1203 | ||
7e90560c | 1204 | static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; |
df92e695 TR |
1205 | |
1206 | static int __init acpi_enforce_resources_setup(char *str) | |
1207 | { | |
1208 | if (str == NULL || *str == '\0') | |
1209 | return 0; | |
1210 | ||
1211 | if (!strcmp("strict", str)) | |
1212 | acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; | |
1213 | else if (!strcmp("lax", str)) | |
1214 | acpi_enforce_resources = ENFORCE_RESOURCES_LAX; | |
1215 | else if (!strcmp("no", str)) | |
1216 | acpi_enforce_resources = ENFORCE_RESOURCES_NO; | |
1217 | ||
1218 | return 1; | |
1219 | } | |
1220 | ||
1221 | __setup("acpi_enforce_resources=", acpi_enforce_resources_setup); | |
1222 | ||
1223 | /* Check for resource conflicts between ACPI OperationRegions and native | |
1224 | * drivers */ | |
876fba43 | 1225 | int acpi_check_resource_conflict(const struct resource *res) |
df92e695 TR |
1226 | { |
1227 | struct acpi_res_list *res_list_elem; | |
1228 | int ioport; | |
1229 | int clash = 0; | |
1230 | ||
1231 | if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) | |
1232 | return 0; | |
1233 | if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM)) | |
1234 | return 0; | |
1235 | ||
1236 | ioport = res->flags & IORESOURCE_IO; | |
1237 | ||
1238 | spin_lock(&acpi_res_lock); | |
1239 | list_for_each_entry(res_list_elem, &resource_list_head, | |
1240 | resource_list) { | |
1241 | if (ioport && (res_list_elem->resource_type | |
1242 | != ACPI_ADR_SPACE_SYSTEM_IO)) | |
1243 | continue; | |
1244 | if (!ioport && (res_list_elem->resource_type | |
1245 | != ACPI_ADR_SPACE_SYSTEM_MEMORY)) | |
1246 | continue; | |
1247 | ||
1248 | if (res->end < res_list_elem->start | |
1249 | || res_list_elem->end < res->start) | |
1250 | continue; | |
1251 | clash = 1; | |
1252 | break; | |
1253 | } | |
1254 | spin_unlock(&acpi_res_lock); | |
1255 | ||
1256 | if (clash) { | |
1257 | if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) { | |
1638bca8 CD |
1258 | printk(KERN_WARNING "ACPI: resource %s %pR" |
1259 | " conflicts with ACPI region %s %pR\n", | |
1260 | res->name, res, res_list_elem->name, | |
1261 | res_list_elem); | |
14f03343 JD |
1262 | if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) |
1263 | printk(KERN_NOTICE "ACPI: This conflict may" | |
1264 | " cause random problems and system" | |
1265 | " instability\n"); | |
1266 | printk(KERN_INFO "ACPI: If an ACPI driver is available" | |
1267 | " for this device, you should use it instead of" | |
1268 | " the native driver\n"); | |
df92e695 TR |
1269 | } |
1270 | if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT) | |
1271 | return -EBUSY; | |
1272 | } | |
1273 | return 0; | |
1274 | } | |
443dea72 | 1275 | EXPORT_SYMBOL(acpi_check_resource_conflict); |
df92e695 TR |
1276 | |
1277 | int acpi_check_region(resource_size_t start, resource_size_t n, | |
1278 | const char *name) | |
1279 | { | |
1280 | struct resource res = { | |
1281 | .start = start, | |
1282 | .end = start + n - 1, | |
1283 | .name = name, | |
1284 | .flags = IORESOURCE_IO, | |
1285 | }; | |
1286 | ||
1287 | return acpi_check_resource_conflict(&res); | |
1288 | } | |
1289 | EXPORT_SYMBOL(acpi_check_region); | |
1290 | ||
1291 | int acpi_check_mem_region(resource_size_t start, resource_size_t n, | |
1292 | const char *name) | |
1293 | { | |
1294 | struct resource res = { | |
1295 | .start = start, | |
1296 | .end = start + n - 1, | |
1297 | .name = name, | |
1298 | .flags = IORESOURCE_MEM, | |
1299 | }; | |
1300 | ||
1301 | return acpi_check_resource_conflict(&res); | |
1302 | ||
1303 | } | |
1304 | EXPORT_SYMBOL(acpi_check_mem_region); | |
1305 | ||
70dd6bea JD |
1306 | /* |
1307 | * Let drivers know whether the resource checks are effective | |
1308 | */ | |
1309 | int acpi_resources_are_enforced(void) | |
1310 | { | |
1311 | return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT; | |
1312 | } | |
1313 | EXPORT_SYMBOL(acpi_resources_are_enforced); | |
1314 | ||
73459f73 RM |
1315 | /* |
1316 | * Acquire a spinlock. | |
1317 | * | |
1318 | * handle is a pointer to the spinlock_t. | |
73459f73 RM |
1319 | */ |
1320 | ||
967440e3 | 1321 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
73459f73 | 1322 | { |
b8e4d893 | 1323 | acpi_cpu_flags flags; |
967440e3 | 1324 | spin_lock_irqsave(lockp, flags); |
73459f73 RM |
1325 | return flags; |
1326 | } | |
1327 | ||
1328 | /* | |
1329 | * Release a spinlock. See above. | |
1330 | */ | |
1331 | ||
967440e3 | 1332 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
73459f73 | 1333 | { |
967440e3 | 1334 | spin_unlock_irqrestore(lockp, flags); |
73459f73 RM |
1335 | } |
1336 | ||
73459f73 RM |
1337 | #ifndef ACPI_USE_LOCAL_CACHE |
1338 | ||
1339 | /******************************************************************************* | |
1340 | * | |
1341 | * FUNCTION: acpi_os_create_cache | |
1342 | * | |
b229cf92 BM |
1343 | * PARAMETERS: name - Ascii name for the cache |
1344 | * size - Size of each cached object | |
1345 | * depth - Maximum depth of the cache (in objects) <ignored> | |
1346 | * cache - Where the new cache object is returned | |
73459f73 | 1347 | * |
b229cf92 | 1348 | * RETURN: status |
73459f73 RM |
1349 | * |
1350 | * DESCRIPTION: Create a cache object | |
1351 | * | |
1352 | ******************************************************************************/ | |
1353 | ||
1354 | acpi_status | |
4be44fcd | 1355 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
73459f73 | 1356 | { |
20c2df83 | 1357 | *cache = kmem_cache_create(name, size, 0, 0, NULL); |
a6fdbf90 | 1358 | if (*cache == NULL) |
b229cf92 BM |
1359 | return AE_ERROR; |
1360 | else | |
1361 | return AE_OK; | |
73459f73 RM |
1362 | } |
1363 | ||
1364 | /******************************************************************************* | |
1365 | * | |
1366 | * FUNCTION: acpi_os_purge_cache | |
1367 | * | |
1368 | * PARAMETERS: Cache - Handle to cache object | |
1369 | * | |
1370 | * RETURN: Status | |
1371 | * | |
1372 | * DESCRIPTION: Free all objects within the requested cache. | |
1373 | * | |
1374 | ******************************************************************************/ | |
1375 | ||
4be44fcd | 1376 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
73459f73 | 1377 | { |
50dd0969 | 1378 | kmem_cache_shrink(cache); |
4be44fcd | 1379 | return (AE_OK); |
73459f73 RM |
1380 | } |
1381 | ||
1382 | /******************************************************************************* | |
1383 | * | |
1384 | * FUNCTION: acpi_os_delete_cache | |
1385 | * | |
1386 | * PARAMETERS: Cache - Handle to cache object | |
1387 | * | |
1388 | * RETURN: Status | |
1389 | * | |
1390 | * DESCRIPTION: Free all objects within the requested cache and delete the | |
1391 | * cache object. | |
1392 | * | |
1393 | ******************************************************************************/ | |
1394 | ||
4be44fcd | 1395 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
73459f73 | 1396 | { |
1a1d92c1 | 1397 | kmem_cache_destroy(cache); |
4be44fcd | 1398 | return (AE_OK); |
73459f73 RM |
1399 | } |
1400 | ||
1401 | /******************************************************************************* | |
1402 | * | |
1403 | * FUNCTION: acpi_os_release_object | |
1404 | * | |
1405 | * PARAMETERS: Cache - Handle to cache object | |
1406 | * Object - The object to be released | |
1407 | * | |
1408 | * RETURN: None | |
1409 | * | |
1410 | * DESCRIPTION: Release an object to the specified cache. If cache is full, | |
1411 | * the object is deleted. | |
1412 | * | |
1413 | ******************************************************************************/ | |
1414 | ||
4be44fcd | 1415 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
73459f73 | 1416 | { |
4be44fcd LB |
1417 | kmem_cache_free(cache, object); |
1418 | return (AE_OK); | |
73459f73 RM |
1419 | } |
1420 | ||
b229cf92 BM |
1421 | /****************************************************************************** |
1422 | * | |
1423 | * FUNCTION: acpi_os_validate_interface | |
1424 | * | |
1425 | * PARAMETERS: interface - Requested interface to be validated | |
1426 | * | |
1427 | * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise | |
1428 | * | |
1429 | * DESCRIPTION: Match an interface string to the interfaces supported by the | |
1430 | * host. Strings originate from an AML call to the _OSI method. | |
1431 | * | |
1432 | *****************************************************************************/ | |
1433 | ||
1434 | acpi_status | |
1435 | acpi_os_validate_interface (char *interface) | |
1436 | { | |
ae00d812 LB |
1437 | if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX)) |
1438 | return AE_OK; | |
f507654d | 1439 | if (!strcmp("Linux", interface)) { |
d4b7dc49 | 1440 | |
f40cd6fd | 1441 | printk(KERN_NOTICE PREFIX |
d4b7dc49 LB |
1442 | "BIOS _OSI(Linux) query %s%s\n", |
1443 | osi_linux.enable ? "honored" : "ignored", | |
1444 | osi_linux.cmdline ? " via cmdline" : | |
1445 | osi_linux.dmi ? " via DMI" : ""); | |
1446 | ||
d4b7dc49 | 1447 | if (osi_linux.enable) |
f507654d LB |
1448 | return AE_OK; |
1449 | } | |
ae00d812 | 1450 | return AE_SUPPORT; |
b229cf92 BM |
1451 | } |
1452 | ||
a5fe1a03 LM |
1453 | static inline int acpi_res_list_add(struct acpi_res_list *res) |
1454 | { | |
1455 | struct acpi_res_list *res_list_elem; | |
1456 | ||
1457 | list_for_each_entry(res_list_elem, &resource_list_head, | |
1458 | resource_list) { | |
1459 | ||
1460 | if (res->resource_type == res_list_elem->resource_type && | |
1461 | res->start == res_list_elem->start && | |
1462 | res->end == res_list_elem->end) { | |
1463 | ||
1464 | /* | |
1465 | * The Region(addr,len) already exist in the list, | |
1466 | * just increase the count | |
1467 | */ | |
1468 | ||
1469 | res_list_elem->count++; | |
1470 | return 0; | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | res->count = 1; | |
1475 | list_add(&res->resource_list, &resource_list_head); | |
1476 | return 1; | |
1477 | } | |
1478 | ||
1479 | static inline void acpi_res_list_del(struct acpi_res_list *res) | |
1480 | { | |
1481 | struct acpi_res_list *res_list_elem; | |
1482 | ||
1483 | list_for_each_entry(res_list_elem, &resource_list_head, | |
1484 | resource_list) { | |
1485 | ||
1486 | if (res->resource_type == res_list_elem->resource_type && | |
1487 | res->start == res_list_elem->start && | |
1488 | res->end == res_list_elem->end) { | |
1489 | ||
1490 | /* | |
1491 | * If the res count is decreased to 0, | |
1492 | * remove and free it | |
1493 | */ | |
1494 | ||
1495 | if (--res_list_elem->count == 0) { | |
1496 | list_del(&res_list_elem->resource_list); | |
1497 | kfree(res_list_elem); | |
1498 | } | |
1499 | return; | |
1500 | } | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | acpi_status | |
1505 | acpi_os_invalidate_address( | |
1506 | u8 space_id, | |
1507 | acpi_physical_address address, | |
1508 | acpi_size length) | |
1509 | { | |
1510 | struct acpi_res_list res; | |
1511 | ||
1512 | switch (space_id) { | |
1513 | case ACPI_ADR_SPACE_SYSTEM_IO: | |
1514 | case ACPI_ADR_SPACE_SYSTEM_MEMORY: | |
88393161 | 1515 | /* Only interference checks against SystemIO and SystemMemory |
a5fe1a03 LM |
1516 | are needed */ |
1517 | res.start = address; | |
1518 | res.end = address + length - 1; | |
1519 | res.resource_type = space_id; | |
1520 | spin_lock(&acpi_res_lock); | |
1521 | acpi_res_list_del(&res); | |
1522 | spin_unlock(&acpi_res_lock); | |
1523 | break; | |
1524 | case ACPI_ADR_SPACE_PCI_CONFIG: | |
1525 | case ACPI_ADR_SPACE_EC: | |
1526 | case ACPI_ADR_SPACE_SMBUS: | |
1527 | case ACPI_ADR_SPACE_CMOS: | |
1528 | case ACPI_ADR_SPACE_PCI_BAR_TARGET: | |
1529 | case ACPI_ADR_SPACE_DATA_TABLE: | |
1530 | case ACPI_ADR_SPACE_FIXED_HARDWARE: | |
1531 | break; | |
1532 | } | |
1533 | return AE_OK; | |
1534 | } | |
1535 | ||
b229cf92 BM |
1536 | /****************************************************************************** |
1537 | * | |
1538 | * FUNCTION: acpi_os_validate_address | |
1539 | * | |
1540 | * PARAMETERS: space_id - ACPI space ID | |
1541 | * address - Physical address | |
1542 | * length - Address length | |
1543 | * | |
1544 | * RETURN: AE_OK if address/length is valid for the space_id. Otherwise, | |
1545 | * should return AE_AML_ILLEGAL_ADDRESS. | |
1546 | * | |
1547 | * DESCRIPTION: Validate a system address via the host OS. Used to validate | |
1548 | * the addresses accessed by AML operation regions. | |
1549 | * | |
1550 | *****************************************************************************/ | |
1551 | ||
1552 | acpi_status | |
1553 | acpi_os_validate_address ( | |
1554 | u8 space_id, | |
1555 | acpi_physical_address address, | |
df92e695 TR |
1556 | acpi_size length, |
1557 | char *name) | |
b229cf92 | 1558 | { |
df92e695 | 1559 | struct acpi_res_list *res; |
a5fe1a03 | 1560 | int added; |
df92e695 TR |
1561 | if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) |
1562 | return AE_OK; | |
b229cf92 | 1563 | |
df92e695 TR |
1564 | switch (space_id) { |
1565 | case ACPI_ADR_SPACE_SYSTEM_IO: | |
1566 | case ACPI_ADR_SPACE_SYSTEM_MEMORY: | |
88393161 | 1567 | /* Only interference checks against SystemIO and SystemMemory |
df92e695 TR |
1568 | are needed */ |
1569 | res = kzalloc(sizeof(struct acpi_res_list), GFP_KERNEL); | |
1570 | if (!res) | |
1571 | return AE_OK; | |
1572 | /* ACPI names are fixed to 4 bytes, still better use strlcpy */ | |
1573 | strlcpy(res->name, name, 5); | |
1574 | res->start = address; | |
1575 | res->end = address + length - 1; | |
1576 | res->resource_type = space_id; | |
1577 | spin_lock(&acpi_res_lock); | |
a5fe1a03 | 1578 | added = acpi_res_list_add(res); |
df92e695 | 1579 | spin_unlock(&acpi_res_lock); |
a5fe1a03 LM |
1580 | pr_debug("%s %s resource: start: 0x%llx, end: 0x%llx, " |
1581 | "name: %s\n", added ? "Added" : "Already exist", | |
1582 | (space_id == ACPI_ADR_SPACE_SYSTEM_IO) | |
df92e695 TR |
1583 | ? "SystemIO" : "System Memory", |
1584 | (unsigned long long)res->start, | |
1585 | (unsigned long long)res->end, | |
1586 | res->name); | |
a5fe1a03 LM |
1587 | if (!added) |
1588 | kfree(res); | |
df92e695 TR |
1589 | break; |
1590 | case ACPI_ADR_SPACE_PCI_CONFIG: | |
1591 | case ACPI_ADR_SPACE_EC: | |
1592 | case ACPI_ADR_SPACE_SMBUS: | |
1593 | case ACPI_ADR_SPACE_CMOS: | |
1594 | case ACPI_ADR_SPACE_PCI_BAR_TARGET: | |
1595 | case ACPI_ADR_SPACE_DATA_TABLE: | |
1596 | case ACPI_ADR_SPACE_FIXED_HARDWARE: | |
1597 | break; | |
1598 | } | |
1599 | return AE_OK; | |
b229cf92 BM |
1600 | } |
1601 | ||
73459f73 | 1602 | #endif |