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1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
046d9ce6 RW |
2 | /* |
3 | * drivers/acpi/resource.c - ACPI device resources interpretation. | |
4 | * | |
5 | * Copyright (C) 2012, Intel Corp. | |
6 | * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
7 | * | |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
046d9ce6 RW |
10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
11 | */ | |
12 | ||
13 | #include <linux/acpi.h> | |
14 | #include <linux/device.h> | |
15 | #include <linux/export.h> | |
16 | #include <linux/ioport.h> | |
8e345c99 | 17 | #include <linux/slab.h> |
55a93417 | 18 | #include <linux/irq.h> |
892a0126 | 19 | #include <linux/dmi.h> |
046d9ce6 RW |
20 | |
21 | #ifdef CONFIG_X86 | |
22 | #define valid_IRQ(i) (((i) != 0) && ((i) != 2)) | |
4a2e7aab LP |
23 | static inline bool acpi_iospace_resource_valid(struct resource *res) |
24 | { | |
25 | /* On X86 IO space is limited to the [0 - 64K] IO port range */ | |
26 | return res->end < 0x10003; | |
27 | } | |
046d9ce6 RW |
28 | #else |
29 | #define valid_IRQ(i) (true) | |
4a2e7aab LP |
30 | /* |
31 | * ACPI IO descriptors on arches other than X86 contain MMIO CPU physical | |
32 | * addresses mapping IO space in CPU physical address space, IO space | |
33 | * resources can be placed anywhere in the 64-bit physical address space. | |
34 | */ | |
35 | static inline bool | |
36 | acpi_iospace_resource_valid(struct resource *res) { return true; } | |
046d9ce6 RW |
37 | #endif |
38 | ||
fa20b176 AVF |
39 | #if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI) |
40 | static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq) | |
41 | { | |
42 | return ext_irq->resource_source.string_length == 0 && | |
43 | ext_irq->producer_consumer == ACPI_CONSUMER; | |
44 | } | |
45 | #else | |
46 | static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq) | |
47 | { | |
48 | return true; | |
49 | } | |
50 | #endif | |
51 | ||
c420dbd1 | 52 | static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io) |
046d9ce6 | 53 | { |
c420dbd1 | 54 | u64 reslen = end - start + 1; |
046d9ce6 | 55 | |
c420dbd1 TG |
56 | /* |
57 | * CHECKME: len might be required to check versus a minimum | |
58 | * length as well. 1 for io is fine, but for memory it does | |
59 | * not make any sense at all. | |
aa714d28 JL |
60 | * Note: some BIOSes report incorrect length for ACPI address space |
61 | * descriptor, so remove check of 'reslen == len' to avoid regression. | |
c420dbd1 | 62 | */ |
aa714d28 | 63 | if (len && reslen && start <= end) |
c420dbd1 TG |
64 | return true; |
65 | ||
6a239af2 | 66 | pr_debug("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n", |
c420dbd1 TG |
67 | io ? "io" : "mem", start, end, len); |
68 | ||
69 | return false; | |
70 | } | |
71 | ||
72 | static void acpi_dev_memresource_flags(struct resource *res, u64 len, | |
72e26b0d | 73 | u8 write_protect) |
c420dbd1 TG |
74 | { |
75 | res->flags = IORESOURCE_MEM; | |
76 | ||
77 | if (!acpi_dev_resource_len_valid(res->start, res->end, len, false)) | |
c78b6885 | 78 | res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; |
046d9ce6 RW |
79 | |
80 | if (write_protect == ACPI_READ_WRITE_MEMORY) | |
c420dbd1 | 81 | res->flags |= IORESOURCE_MEM_WRITEABLE; |
046d9ce6 RW |
82 | } |
83 | ||
84 | static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len, | |
85 | u8 write_protect) | |
86 | { | |
87 | res->start = start; | |
88 | res->end = start + len - 1; | |
72e26b0d | 89 | acpi_dev_memresource_flags(res, len, write_protect); |
046d9ce6 RW |
90 | } |
91 | ||
92 | /** | |
93 | * acpi_dev_resource_memory - Extract ACPI memory resource information. | |
94 | * @ares: Input ACPI resource object. | |
95 | * @res: Output generic resource object. | |
96 | * | |
97 | * Check if the given ACPI resource object represents a memory resource and | |
98 | * if that's the case, use the information in it to populate the generic | |
99 | * resource object pointed to by @res. | |
581c19f3 JL |
100 | * |
101 | * Return: | |
102 | * 1) false with res->flags setting to zero: not the expected resource type | |
103 | * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource | |
104 | * 3) true: valid assigned resource | |
046d9ce6 RW |
105 | */ |
106 | bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res) | |
107 | { | |
108 | struct acpi_resource_memory24 *memory24; | |
109 | struct acpi_resource_memory32 *memory32; | |
110 | struct acpi_resource_fixed_memory32 *fixed_memory32; | |
111 | ||
112 | switch (ares->type) { | |
113 | case ACPI_RESOURCE_TYPE_MEMORY24: | |
114 | memory24 = &ares->data.memory24; | |
8515f936 JL |
115 | acpi_dev_get_memresource(res, memory24->minimum << 8, |
116 | memory24->address_length << 8, | |
046d9ce6 RW |
117 | memory24->write_protect); |
118 | break; | |
119 | case ACPI_RESOURCE_TYPE_MEMORY32: | |
120 | memory32 = &ares->data.memory32; | |
121 | acpi_dev_get_memresource(res, memory32->minimum, | |
122 | memory32->address_length, | |
123 | memory32->write_protect); | |
124 | break; | |
125 | case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: | |
126 | fixed_memory32 = &ares->data.fixed_memory32; | |
127 | acpi_dev_get_memresource(res, fixed_memory32->address, | |
128 | fixed_memory32->address_length, | |
129 | fixed_memory32->write_protect); | |
130 | break; | |
131 | default: | |
581c19f3 | 132 | res->flags = 0; |
046d9ce6 RW |
133 | return false; |
134 | } | |
c420dbd1 TG |
135 | |
136 | return !(res->flags & IORESOURCE_DISABLED); | |
046d9ce6 RW |
137 | } |
138 | EXPORT_SYMBOL_GPL(acpi_dev_resource_memory); | |
139 | ||
1d0420f1 | 140 | static void acpi_dev_ioresource_flags(struct resource *res, u64 len, |
91236ecc | 141 | u8 io_decode, u8 translation_type) |
046d9ce6 | 142 | { |
1d0420f1 | 143 | res->flags = IORESOURCE_IO; |
046d9ce6 | 144 | |
1d0420f1 | 145 | if (!acpi_dev_resource_len_valid(res->start, res->end, len, true)) |
c78b6885 | 146 | res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; |
1d0420f1 | 147 | |
4a2e7aab | 148 | if (!acpi_iospace_resource_valid(res)) |
c78b6885 | 149 | res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; |
046d9ce6 | 150 | |
1d0420f1 TG |
151 | if (io_decode == ACPI_DECODE_16) |
152 | res->flags |= IORESOURCE_IO_16BIT_ADDR; | |
91236ecc JL |
153 | if (translation_type == ACPI_SPARSE_TRANSLATION) |
154 | res->flags |= IORESOURCE_IO_SPARSE; | |
046d9ce6 RW |
155 | } |
156 | ||
157 | static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len, | |
158 | u8 io_decode) | |
159 | { | |
046d9ce6 | 160 | res->start = start; |
1d0420f1 | 161 | res->end = start + len - 1; |
91236ecc | 162 | acpi_dev_ioresource_flags(res, len, io_decode, 0); |
046d9ce6 RW |
163 | } |
164 | ||
165 | /** | |
166 | * acpi_dev_resource_io - Extract ACPI I/O resource information. | |
167 | * @ares: Input ACPI resource object. | |
168 | * @res: Output generic resource object. | |
169 | * | |
170 | * Check if the given ACPI resource object represents an I/O resource and | |
171 | * if that's the case, use the information in it to populate the generic | |
172 | * resource object pointed to by @res. | |
581c19f3 JL |
173 | * |
174 | * Return: | |
175 | * 1) false with res->flags setting to zero: not the expected resource type | |
176 | * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource | |
177 | * 3) true: valid assigned resource | |
046d9ce6 RW |
178 | */ |
179 | bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res) | |
180 | { | |
181 | struct acpi_resource_io *io; | |
182 | struct acpi_resource_fixed_io *fixed_io; | |
183 | ||
184 | switch (ares->type) { | |
185 | case ACPI_RESOURCE_TYPE_IO: | |
186 | io = &ares->data.io; | |
187 | acpi_dev_get_ioresource(res, io->minimum, | |
188 | io->address_length, | |
189 | io->io_decode); | |
190 | break; | |
191 | case ACPI_RESOURCE_TYPE_FIXED_IO: | |
192 | fixed_io = &ares->data.fixed_io; | |
193 | acpi_dev_get_ioresource(res, fixed_io->address, | |
194 | fixed_io->address_length, | |
195 | ACPI_DECODE_10); | |
196 | break; | |
197 | default: | |
581c19f3 | 198 | res->flags = 0; |
046d9ce6 RW |
199 | return false; |
200 | } | |
1d0420f1 TG |
201 | |
202 | return !(res->flags & IORESOURCE_DISABLED); | |
046d9ce6 RW |
203 | } |
204 | EXPORT_SYMBOL_GPL(acpi_dev_resource_io); | |
205 | ||
a49170b5 | 206 | static bool acpi_decode_space(struct resource_win *win, |
eb76d55e TG |
207 | struct acpi_resource_address *addr, |
208 | struct acpi_address64_attribute *attr) | |
209 | { | |
210 | u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16; | |
eb76d55e TG |
211 | bool wp = addr->info.mem.write_protect; |
212 | u64 len = attr->address_length; | |
1fb01ca9 | 213 | u64 start, end, offset = 0; |
a49170b5 | 214 | struct resource *res = &win->res; |
eb76d55e | 215 | |
a274019f JL |
216 | /* |
217 | * Filter out invalid descriptor according to ACPI Spec 5.0, section | |
218 | * 6.4.3.5 Address Space Resource Descriptors. | |
219 | */ | |
220 | if ((addr->min_address_fixed != addr->max_address_fixed && len) || | |
221 | (addr->min_address_fixed && addr->max_address_fixed && !len)) | |
222 | pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n", | |
223 | addr->min_address_fixed, addr->max_address_fixed, len); | |
224 | ||
2ea3d266 JL |
225 | /* |
226 | * For bridges that translate addresses across the bridge, | |
227 | * translation_offset is the offset that must be added to the | |
228 | * address on the secondary side to obtain the address on the | |
229 | * primary side. Non-bridge devices must list 0 for all Address | |
230 | * Translation offset bits. | |
231 | */ | |
1fb01ca9 JL |
232 | if (addr->producer_consumer == ACPI_PRODUCER) |
233 | offset = attr->translation_offset; | |
234 | else if (attr->translation_offset) | |
2ea3d266 JL |
235 | pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n", |
236 | attr->translation_offset); | |
1fb01ca9 JL |
237 | start = attr->minimum + offset; |
238 | end = attr->maximum + offset; | |
239 | ||
240 | win->offset = offset; | |
241 | res->start = start; | |
242 | res->end = end; | |
243 | if (sizeof(resource_size_t) < sizeof(u64) && | |
244 | (offset != win->offset || start != res->start || end != res->end)) { | |
245 | pr_warn("acpi resource window ([%#llx-%#llx] ignored, not CPU addressable)\n", | |
246 | attr->minimum, attr->maximum); | |
247 | return false; | |
2ea3d266 JL |
248 | } |
249 | ||
eb76d55e TG |
250 | switch (addr->resource_type) { |
251 | case ACPI_MEMORY_RANGE: | |
72e26b0d | 252 | acpi_dev_memresource_flags(res, len, wp); |
eb76d55e TG |
253 | break; |
254 | case ACPI_IO_RANGE: | |
91236ecc JL |
255 | acpi_dev_ioresource_flags(res, len, iodec, |
256 | addr->info.io.translation_type); | |
eb76d55e TG |
257 | break; |
258 | case ACPI_BUS_NUMBER_RANGE: | |
259 | res->flags = IORESOURCE_BUS; | |
260 | break; | |
261 | default: | |
262 | return false; | |
263 | } | |
264 | ||
72e26b0d TG |
265 | if (addr->producer_consumer == ACPI_PRODUCER) |
266 | res->flags |= IORESOURCE_WINDOW; | |
fcb29bbc TG |
267 | |
268 | if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY) | |
269 | res->flags |= IORESOURCE_PREFETCH; | |
72e26b0d | 270 | |
eb76d55e TG |
271 | return !(res->flags & IORESOURCE_DISABLED); |
272 | } | |
273 | ||
046d9ce6 RW |
274 | /** |
275 | * acpi_dev_resource_address_space - Extract ACPI address space information. | |
276 | * @ares: Input ACPI resource object. | |
a49170b5 | 277 | * @win: Output generic resource object. |
046d9ce6 RW |
278 | * |
279 | * Check if the given ACPI resource object represents an address space resource | |
280 | * and if that's the case, use the information in it to populate the generic | |
a49170b5 | 281 | * resource object pointed to by @win. |
581c19f3 JL |
282 | * |
283 | * Return: | |
a49170b5 JL |
284 | * 1) false with win->res.flags setting to zero: not the expected resource type |
285 | * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned | |
286 | * resource | |
581c19f3 | 287 | * 3) true: valid assigned resource |
046d9ce6 RW |
288 | */ |
289 | bool acpi_dev_resource_address_space(struct acpi_resource *ares, | |
a49170b5 | 290 | struct resource_win *win) |
046d9ce6 | 291 | { |
046d9ce6 | 292 | struct acpi_resource_address64 addr; |
046d9ce6 | 293 | |
a49170b5 | 294 | win->res.flags = 0; |
eb76d55e | 295 | if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr))) |
6658c739 | 296 | return false; |
046d9ce6 | 297 | |
a49170b5 | 298 | return acpi_decode_space(win, (struct acpi_resource_address *)&addr, |
eb76d55e | 299 | &addr.address); |
046d9ce6 RW |
300 | } |
301 | EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space); | |
302 | ||
303 | /** | |
304 | * acpi_dev_resource_ext_address_space - Extract ACPI address space information. | |
305 | * @ares: Input ACPI resource object. | |
a49170b5 | 306 | * @win: Output generic resource object. |
046d9ce6 RW |
307 | * |
308 | * Check if the given ACPI resource object represents an extended address space | |
309 | * resource and if that's the case, use the information in it to populate the | |
a49170b5 | 310 | * generic resource object pointed to by @win. |
581c19f3 JL |
311 | * |
312 | * Return: | |
a49170b5 JL |
313 | * 1) false with win->res.flags setting to zero: not the expected resource type |
314 | * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned | |
315 | * resource | |
581c19f3 | 316 | * 3) true: valid assigned resource |
046d9ce6 RW |
317 | */ |
318 | bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares, | |
a49170b5 | 319 | struct resource_win *win) |
046d9ce6 RW |
320 | { |
321 | struct acpi_resource_extended_address64 *ext_addr; | |
046d9ce6 | 322 | |
a49170b5 | 323 | win->res.flags = 0; |
046d9ce6 RW |
324 | if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) |
325 | return false; | |
326 | ||
327 | ext_addr = &ares->data.ext_address64; | |
328 | ||
a49170b5 | 329 | return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr, |
eb76d55e | 330 | &ext_addr->address); |
046d9ce6 RW |
331 | } |
332 | EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space); | |
333 | ||
334 | /** | |
335 | * acpi_dev_irq_flags - Determine IRQ resource flags. | |
336 | * @triggering: Triggering type as provided by ACPI. | |
337 | * @polarity: Interrupt polarity as provided by ACPI. | |
338 | * @shareable: Whether or not the interrupt is shareable. | |
5ff81160 | 339 | * @wake_capable: Wake capability as provided by ACPI. |
046d9ce6 | 340 | */ |
5ff81160 | 341 | unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable, u8 wake_capable) |
046d9ce6 RW |
342 | { |
343 | unsigned long flags; | |
344 | ||
345 | if (triggering == ACPI_LEVEL_SENSITIVE) | |
346 | flags = polarity == ACPI_ACTIVE_LOW ? | |
347 | IORESOURCE_IRQ_LOWLEVEL : IORESOURCE_IRQ_HIGHLEVEL; | |
348 | else | |
349 | flags = polarity == ACPI_ACTIVE_LOW ? | |
350 | IORESOURCE_IRQ_LOWEDGE : IORESOURCE_IRQ_HIGHEDGE; | |
351 | ||
352 | if (shareable == ACPI_SHARED) | |
353 | flags |= IORESOURCE_IRQ_SHAREABLE; | |
354 | ||
5ff81160 RR |
355 | if (wake_capable == ACPI_WAKE_CAPABLE) |
356 | flags |= IORESOURCE_IRQ_WAKECAPABLE; | |
357 | ||
046d9ce6 RW |
358 | return flags | IORESOURCE_IRQ; |
359 | } | |
360 | EXPORT_SYMBOL_GPL(acpi_dev_irq_flags); | |
361 | ||
55a93417 CR |
362 | /** |
363 | * acpi_dev_get_irq_type - Determine irq type. | |
364 | * @triggering: Triggering type as provided by ACPI. | |
365 | * @polarity: Interrupt polarity as provided by ACPI. | |
366 | */ | |
367 | unsigned int acpi_dev_get_irq_type(int triggering, int polarity) | |
368 | { | |
369 | switch (polarity) { | |
370 | case ACPI_ACTIVE_LOW: | |
371 | return triggering == ACPI_EDGE_SENSITIVE ? | |
372 | IRQ_TYPE_EDGE_FALLING : | |
373 | IRQ_TYPE_LEVEL_LOW; | |
374 | case ACPI_ACTIVE_HIGH: | |
375 | return triggering == ACPI_EDGE_SENSITIVE ? | |
376 | IRQ_TYPE_EDGE_RISING : | |
377 | IRQ_TYPE_LEVEL_HIGH; | |
378 | case ACPI_ACTIVE_BOTH: | |
379 | if (triggering == ACPI_EDGE_SENSITIVE) | |
380 | return IRQ_TYPE_EDGE_BOTH; | |
57d2dd4b | 381 | fallthrough; |
55a93417 CR |
382 | default: |
383 | return IRQ_TYPE_NONE; | |
384 | } | |
385 | } | |
386 | EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type); | |
387 | ||
892a0126 HW |
388 | static const struct dmi_system_id medion_laptop[] = { |
389 | { | |
390 | .ident = "MEDION P15651", | |
391 | .matches = { | |
392 | DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), | |
393 | DMI_MATCH(DMI_BOARD_NAME, "M15T"), | |
394 | }, | |
395 | }, | |
1b26ae40 HW |
396 | { |
397 | .ident = "MEDION S17405", | |
398 | .matches = { | |
399 | DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), | |
400 | DMI_MATCH(DMI_BOARD_NAME, "M17T"), | |
401 | }, | |
402 | }, | |
892a0126 HW |
403 | { } |
404 | }; | |
405 | ||
e12dee37 TK |
406 | static const struct dmi_system_id asus_laptop[] = { |
407 | { | |
408 | .ident = "Asus Vivobook K3402ZA", | |
409 | .matches = { | |
410 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
411 | DMI_MATCH(DMI_BOARD_NAME, "K3402ZA"), | |
412 | }, | |
413 | }, | |
414 | { | |
415 | .ident = "Asus Vivobook K3502ZA", | |
416 | .matches = { | |
417 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
418 | DMI_MATCH(DMI_BOARD_NAME, "K3502ZA"), | |
419 | }, | |
420 | }, | |
6e5cbe7c KR |
421 | { |
422 | .ident = "Asus Vivobook S5402ZA", | |
423 | .matches = { | |
424 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
425 | DMI_MATCH(DMI_BOARD_NAME, "S5402ZA"), | |
426 | }, | |
427 | }, | |
b5f9223a TK |
428 | { |
429 | .ident = "Asus Vivobook S5602ZA", | |
430 | .matches = { | |
431 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
432 | DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"), | |
433 | }, | |
434 | }, | |
77c72488 TK |
435 | { |
436 | .ident = "Asus ExpertBook B2402CBA", | |
437 | .matches = { | |
438 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
439 | DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"), | |
440 | }, | |
441 | }, | |
7203481f HG |
442 | { |
443 | .ident = "Asus ExpertBook B2502", | |
444 | .matches = { | |
445 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
446 | DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"), | |
447 | }, | |
448 | }, | |
e12dee37 TK |
449 | { } |
450 | }; | |
451 | ||
f3cb9b74 AF |
452 | static const struct dmi_system_id lenovo_laptop[] = { |
453 | { | |
454 | .ident = "LENOVO IdeaPad Flex 5 14ALC7", | |
455 | .matches = { | |
456 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
457 | DMI_MATCH(DMI_PRODUCT_NAME, "82R9"), | |
458 | }, | |
459 | }, | |
bfcdf583 JSS |
460 | { |
461 | .ident = "LENOVO IdeaPad Flex 5 16ALC7", | |
462 | .matches = { | |
463 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
464 | DMI_MATCH(DMI_PRODUCT_NAME, "82RA"), | |
465 | }, | |
466 | }, | |
467 | { } | |
468 | }; | |
469 | ||
7592b79b ES |
470 | static const struct dmi_system_id schenker_gm_rg[] = { |
471 | { | |
472 | .ident = "XMG CORE 15 (M22)", | |
473 | .matches = { | |
474 | DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"), | |
475 | DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), | |
476 | }, | |
477 | }, | |
478 | { } | |
479 | }; | |
480 | ||
892a0126 HW |
481 | struct irq_override_cmp { |
482 | const struct dmi_system_id *system; | |
483 | unsigned char irq; | |
484 | unsigned char triggering; | |
485 | unsigned char polarity; | |
486 | unsigned char shareable; | |
bfcdf583 | 487 | bool override; |
892a0126 HW |
488 | }; |
489 | ||
bfcdf583 JSS |
490 | static const struct irq_override_cmp override_table[] = { |
491 | { medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, | |
492 | { asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, | |
f3cb9b74 AF |
493 | { lenovo_laptop, 6, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true }, |
494 | { lenovo_laptop, 10, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, true }, | |
7592b79b | 495 | { schenker_gm_rg, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, |
892a0126 HW |
496 | }; |
497 | ||
498 | static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity, | |
499 | u8 shareable) | |
500 | { | |
501 | int i; | |
502 | ||
bfcdf583 JSS |
503 | for (i = 0; i < ARRAY_SIZE(override_table); i++) { |
504 | const struct irq_override_cmp *entry = &override_table[i]; | |
505 | ||
506 | if (dmi_check_system(entry->system) && | |
507 | entry->irq == gsi && | |
508 | entry->triggering == triggering && | |
509 | entry->polarity == polarity && | |
510 | entry->shareable == shareable) | |
511 | return entry->override; | |
512 | } | |
513 | ||
9946e39f CG |
514 | #ifdef CONFIG_X86 |
515 | /* | |
516 | * IRQ override isn't needed on modern AMD Zen systems and | |
517 | * this override breaks active low IRQs on AMD Ryzen 6000 and | |
518 | * newer systems. Skip it. | |
519 | */ | |
520 | if (boot_cpu_has(X86_FEATURE_ZEN)) | |
521 | return false; | |
522 | #endif | |
523 | ||
892a0126 HW |
524 | return true; |
525 | } | |
526 | ||
046d9ce6 | 527 | static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, |
204ebc0a | 528 | u8 triggering, u8 polarity, u8 shareable, |
5ff81160 | 529 | u8 wake_capable, bool check_override) |
046d9ce6 RW |
530 | { |
531 | int irq, p, t; | |
532 | ||
533 | if (!valid_IRQ(gsi)) { | |
1c3f69b4 | 534 | irqresource_disabled(res, gsi); |
046d9ce6 RW |
535 | return; |
536 | } | |
537 | ||
538 | /* | |
03671057 | 539 | * In IO-APIC mode, use overridden attribute. Two reasons: |
046d9ce6 RW |
540 | * 1. BIOS bug in DSDT |
541 | * 2. BIOS uses IO-APIC mode Interrupt Source Override | |
204ebc0a MW |
542 | * |
543 | * We do this only if we are dealing with IRQ() or IRQNoFlags() | |
544 | * resource (the legacy ISA resources). With modern ACPI 5 devices | |
545 | * using extended IRQ descriptors we take the IRQ configuration | |
546 | * from _CRS directly. | |
046d9ce6 | 547 | */ |
892a0126 HW |
548 | if (check_override && |
549 | acpi_dev_irq_override(gsi, triggering, polarity, shareable) && | |
550 | !acpi_get_override_irq(gsi, &t, &p)) { | |
046d9ce6 RW |
551 | u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE; |
552 | u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH; | |
553 | ||
554 | if (triggering != trig || polarity != pol) { | |
4ef96d4d JSS |
555 | pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi, |
556 | t ? "level" : "edge", | |
557 | trig == triggering ? "" : "(!)", | |
558 | p ? "low" : "high", | |
559 | pol == polarity ? "" : "(!)"); | |
046d9ce6 RW |
560 | triggering = trig; |
561 | polarity = pol; | |
562 | } | |
563 | } | |
564 | ||
5ff81160 | 565 | res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable); |
046d9ce6 RW |
566 | irq = acpi_register_gsi(NULL, gsi, triggering, polarity); |
567 | if (irq >= 0) { | |
568 | res->start = irq; | |
569 | res->end = irq; | |
570 | } else { | |
1c3f69b4 | 571 | irqresource_disabled(res, gsi); |
046d9ce6 RW |
572 | } |
573 | } | |
574 | ||
575 | /** | |
576 | * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information. | |
577 | * @ares: Input ACPI resource object. | |
578 | * @index: Index into the array of GSIs represented by the resource. | |
579 | * @res: Output generic resource object. | |
580 | * | |
581 | * Check if the given ACPI resource object represents an interrupt resource | |
582 | * and @index does not exceed the resource's interrupt count (true is returned | |
583 | * in that case regardless of the results of the other checks)). If that's the | |
584 | * case, register the GSI corresponding to @index from the array of interrupts | |
585 | * represented by the resource and populate the generic resource object pointed | |
586 | * to by @res accordingly. If the registration of the GSI is not successful, | |
587 | * IORESOURCE_DISABLED will be set it that object's flags. | |
581c19f3 JL |
588 | * |
589 | * Return: | |
590 | * 1) false with res->flags setting to zero: not the expected resource type | |
591 | * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource | |
592 | * 3) true: valid assigned resource | |
046d9ce6 RW |
593 | */ |
594 | bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, | |
595 | struct resource *res) | |
596 | { | |
597 | struct acpi_resource_irq *irq; | |
598 | struct acpi_resource_extended_irq *ext_irq; | |
599 | ||
600 | switch (ares->type) { | |
601 | case ACPI_RESOURCE_TYPE_IRQ: | |
602 | /* | |
603 | * Per spec, only one interrupt per descriptor is allowed in | |
604 | * _CRS, but some firmware violates this, so parse them all. | |
605 | */ | |
606 | irq = &ares->data.irq; | |
607 | if (index >= irq->interrupt_count) { | |
1c3f69b4 | 608 | irqresource_disabled(res, 0); |
046d9ce6 RW |
609 | return false; |
610 | } | |
611 | acpi_dev_get_irqresource(res, irq->interrupts[index], | |
612 | irq->triggering, irq->polarity, | |
5ff81160 RR |
613 | irq->shareable, irq->wake_capable, |
614 | true); | |
046d9ce6 RW |
615 | break; |
616 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
617 | ext_irq = &ares->data.extended_irq; | |
618 | if (index >= ext_irq->interrupt_count) { | |
1c3f69b4 | 619 | irqresource_disabled(res, 0); |
046d9ce6 RW |
620 | return false; |
621 | } | |
fa20b176 AVF |
622 | if (is_gsi(ext_irq)) |
623 | acpi_dev_get_irqresource(res, ext_irq->interrupts[index], | |
046d9ce6 | 624 | ext_irq->triggering, ext_irq->polarity, |
5ff81160 RR |
625 | ext_irq->shareable, ext_irq->wake_capable, |
626 | false); | |
fa20b176 | 627 | else |
1c3f69b4 | 628 | irqresource_disabled(res, 0); |
046d9ce6 RW |
629 | break; |
630 | default: | |
581c19f3 | 631 | res->flags = 0; |
046d9ce6 RW |
632 | return false; |
633 | } | |
634 | ||
635 | return true; | |
636 | } | |
637 | EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt); | |
8e345c99 RW |
638 | |
639 | /** | |
640 | * acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources(). | |
641 | * @list: The head of the resource list to free. | |
642 | */ | |
643 | void acpi_dev_free_resource_list(struct list_head *list) | |
644 | { | |
90e97820 | 645 | resource_list_free(list); |
8e345c99 RW |
646 | } |
647 | EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list); | |
648 | ||
649 | struct res_proc_context { | |
650 | struct list_head *list; | |
651 | int (*preproc)(struct acpi_resource *, void *); | |
652 | void *preproc_data; | |
653 | int count; | |
654 | int error; | |
655 | }; | |
656 | ||
a49170b5 | 657 | static acpi_status acpi_dev_new_resource_entry(struct resource_win *win, |
8e345c99 RW |
658 | struct res_proc_context *c) |
659 | { | |
90e97820 | 660 | struct resource_entry *rentry; |
8e345c99 | 661 | |
90e97820 | 662 | rentry = resource_list_create_entry(NULL, 0); |
8e345c99 RW |
663 | if (!rentry) { |
664 | c->error = -ENOMEM; | |
665 | return AE_NO_MEMORY; | |
666 | } | |
90e97820 | 667 | *rentry->res = win->res; |
93286f47 | 668 | rentry->offset = win->offset; |
90e97820 | 669 | resource_list_add_tail(rentry, c->list); |
8e345c99 RW |
670 | c->count++; |
671 | return AE_OK; | |
672 | } | |
673 | ||
674 | static acpi_status acpi_dev_process_resource(struct acpi_resource *ares, | |
675 | void *context) | |
676 | { | |
677 | struct res_proc_context *c = context; | |
a49170b5 JL |
678 | struct resource_win win; |
679 | struct resource *res = &win.res; | |
8e345c99 RW |
680 | int i; |
681 | ||
682 | if (c->preproc) { | |
683 | int ret; | |
684 | ||
685 | ret = c->preproc(ares, c->preproc_data); | |
686 | if (ret < 0) { | |
687 | c->error = ret; | |
12fc4dad | 688 | return AE_ABORT_METHOD; |
8e345c99 RW |
689 | } else if (ret > 0) { |
690 | return AE_OK; | |
691 | } | |
692 | } | |
693 | ||
a49170b5 | 694 | memset(&win, 0, sizeof(win)); |
8e345c99 | 695 | |
a49170b5 JL |
696 | if (acpi_dev_resource_memory(ares, res) |
697 | || acpi_dev_resource_io(ares, res) | |
698 | || acpi_dev_resource_address_space(ares, &win) | |
699 | || acpi_dev_resource_ext_address_space(ares, &win)) | |
700 | return acpi_dev_new_resource_entry(&win, c); | |
8e345c99 | 701 | |
a49170b5 | 702 | for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) { |
8e345c99 RW |
703 | acpi_status status; |
704 | ||
a49170b5 | 705 | status = acpi_dev_new_resource_entry(&win, c); |
8e345c99 RW |
706 | if (ACPI_FAILURE(status)) |
707 | return status; | |
708 | } | |
709 | ||
710 | return AE_OK; | |
711 | } | |
712 | ||
4f0450af LP |
713 | static int __acpi_dev_get_resources(struct acpi_device *adev, |
714 | struct list_head *list, | |
715 | int (*preproc)(struct acpi_resource *, void *), | |
716 | void *preproc_data, char *method) | |
717 | { | |
718 | struct res_proc_context c; | |
719 | acpi_status status; | |
720 | ||
721 | if (!adev || !adev->handle || !list_empty(list)) | |
722 | return -EINVAL; | |
723 | ||
724 | if (!acpi_has_method(adev->handle, method)) | |
725 | return 0; | |
726 | ||
727 | c.list = list; | |
728 | c.preproc = preproc; | |
729 | c.preproc_data = preproc_data; | |
730 | c.count = 0; | |
731 | c.error = 0; | |
732 | status = acpi_walk_resources(adev->handle, method, | |
733 | acpi_dev_process_resource, &c); | |
734 | if (ACPI_FAILURE(status)) { | |
735 | acpi_dev_free_resource_list(list); | |
736 | return c.error ? c.error : -EIO; | |
737 | } | |
738 | ||
739 | return c.count; | |
740 | } | |
741 | ||
8e345c99 RW |
742 | /** |
743 | * acpi_dev_get_resources - Get current resources of a device. | |
744 | * @adev: ACPI device node to get the resources for. | |
745 | * @list: Head of the resultant list of resources (must be empty). | |
746 | * @preproc: The caller's preprocessing routine. | |
747 | * @preproc_data: Pointer passed to the caller's preprocessing routine. | |
748 | * | |
749 | * Evaluate the _CRS method for the given device node and process its output by | |
935ab850 | 750 | * (1) executing the @preproc() routine provided by the caller, passing the |
8e345c99 RW |
751 | * resource pointer and @preproc_data to it as arguments, for each ACPI resource |
752 | * returned and (2) converting all of the returned ACPI resources into struct | |
753 | * resource objects if possible. If the return value of @preproc() in step (1) | |
754 | * is different from 0, step (2) is not applied to the given ACPI resource and | |
755 | * if that value is negative, the whole processing is aborted and that value is | |
756 | * returned as the final error code. | |
757 | * | |
758 | * The resultant struct resource objects are put on the list pointed to by | |
90e97820 | 759 | * @list, that must be empty initially, as members of struct resource_entry |
8e345c99 RW |
760 | * objects. Callers of this routine should use %acpi_dev_free_resource_list() to |
761 | * free that list. | |
762 | * | |
763 | * The number of resources in the output list is returned on success, an error | |
764 | * code reflecting the error condition is returned otherwise. | |
765 | */ | |
766 | int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, | |
767 | int (*preproc)(struct acpi_resource *, void *), | |
768 | void *preproc_data) | |
769 | { | |
4f0450af LP |
770 | return __acpi_dev_get_resources(adev, list, preproc, preproc_data, |
771 | METHOD_NAME__CRS); | |
8e345c99 RW |
772 | } |
773 | EXPORT_SYMBOL_GPL(acpi_dev_get_resources); | |
62d1141f | 774 | |
c04ac679 LP |
775 | static int is_memory(struct acpi_resource *ares, void *not_used) |
776 | { | |
777 | struct resource_win win; | |
778 | struct resource *res = &win.res; | |
779 | ||
780 | memset(&win, 0, sizeof(win)); | |
781 | ||
6d2b5a1c HK |
782 | if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM)) |
783 | return 1; | |
784 | ||
c04ac679 LP |
785 | return !(acpi_dev_resource_memory(ares, res) |
786 | || acpi_dev_resource_address_space(ares, &win) | |
787 | || acpi_dev_resource_ext_address_space(ares, &win)); | |
788 | } | |
789 | ||
790 | /** | |
791 | * acpi_dev_get_dma_resources - Get current DMA resources of a device. | |
792 | * @adev: ACPI device node to get the resources for. | |
793 | * @list: Head of the resultant list of resources (must be empty). | |
794 | * | |
795 | * Evaluate the _DMA method for the given device node and process its | |
796 | * output. | |
797 | * | |
798 | * The resultant struct resource objects are put on the list pointed to | |
799 | * by @list, that must be empty initially, as members of struct | |
800 | * resource_entry objects. Callers of this routine should use | |
801 | * %acpi_dev_free_resource_list() to free that list. | |
802 | * | |
803 | * The number of resources in the output list is returned on success, | |
804 | * an error code reflecting the error condition is returned otherwise. | |
805 | */ | |
806 | int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list) | |
807 | { | |
808 | return __acpi_dev_get_resources(adev, list, is_memory, NULL, | |
809 | METHOD_NAME__DMA); | |
810 | } | |
811 | EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources); | |
812 | ||
6bb057bf HK |
813 | /** |
814 | * acpi_dev_get_memory_resources - Get current memory resources of a device. | |
815 | * @adev: ACPI device node to get the resources for. | |
816 | * @list: Head of the resultant list of resources (must be empty). | |
817 | * | |
818 | * This is a helper function that locates all memory type resources of @adev | |
819 | * with acpi_dev_get_resources(). | |
820 | * | |
821 | * The number of resources in the output list is returned on success, an error | |
822 | * code reflecting the error condition is returned otherwise. | |
823 | */ | |
824 | int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list) | |
825 | { | |
826 | return acpi_dev_get_resources(adev, list, is_memory, NULL); | |
827 | } | |
828 | EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources); | |
829 | ||
62d1141f JL |
830 | /** |
831 | * acpi_dev_filter_resource_type - Filter ACPI resource according to resource | |
832 | * types | |
833 | * @ares: Input ACPI resource object. | |
834 | * @types: Valid resource types of IORESOURCE_XXX | |
835 | * | |
2c62e849 | 836 | * This is a helper function to support acpi_dev_get_resources(), which filters |
62d1141f JL |
837 | * ACPI resource objects according to resource types. |
838 | */ | |
839 | int acpi_dev_filter_resource_type(struct acpi_resource *ares, | |
840 | unsigned long types) | |
841 | { | |
842 | unsigned long type = 0; | |
843 | ||
844 | switch (ares->type) { | |
845 | case ACPI_RESOURCE_TYPE_MEMORY24: | |
846 | case ACPI_RESOURCE_TYPE_MEMORY32: | |
847 | case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: | |
848 | type = IORESOURCE_MEM; | |
849 | break; | |
850 | case ACPI_RESOURCE_TYPE_IO: | |
851 | case ACPI_RESOURCE_TYPE_FIXED_IO: | |
852 | type = IORESOURCE_IO; | |
853 | break; | |
854 | case ACPI_RESOURCE_TYPE_IRQ: | |
855 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
856 | type = IORESOURCE_IRQ; | |
857 | break; | |
858 | case ACPI_RESOURCE_TYPE_DMA: | |
859 | case ACPI_RESOURCE_TYPE_FIXED_DMA: | |
860 | type = IORESOURCE_DMA; | |
861 | break; | |
862 | case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: | |
863 | type = IORESOURCE_REG; | |
864 | break; | |
865 | case ACPI_RESOURCE_TYPE_ADDRESS16: | |
866 | case ACPI_RESOURCE_TYPE_ADDRESS32: | |
867 | case ACPI_RESOURCE_TYPE_ADDRESS64: | |
868 | case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: | |
869 | if (ares->data.address.resource_type == ACPI_MEMORY_RANGE) | |
870 | type = IORESOURCE_MEM; | |
871 | else if (ares->data.address.resource_type == ACPI_IO_RANGE) | |
872 | type = IORESOURCE_IO; | |
873 | else if (ares->data.address.resource_type == | |
874 | ACPI_BUS_NUMBER_RANGE) | |
875 | type = IORESOURCE_BUS; | |
876 | break; | |
877 | default: | |
878 | break; | |
879 | } | |
880 | ||
881 | return (type & types) ? 0 : 1; | |
882 | } | |
883 | EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type); | |
00710984 BH |
884 | |
885 | static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res) | |
886 | { | |
887 | struct list_head resource_list; | |
888 | struct resource_entry *rentry; | |
889 | int ret, found = 0; | |
890 | ||
891 | INIT_LIST_HEAD(&resource_list); | |
892 | ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL); | |
893 | if (ret < 0) | |
894 | return 0; | |
895 | ||
896 | list_for_each_entry(rentry, &resource_list, node) { | |
897 | if (resource_contains(rentry->res, res)) { | |
898 | found = 1; | |
899 | break; | |
900 | } | |
901 | ||
902 | } | |
903 | ||
904 | acpi_dev_free_resource_list(&resource_list); | |
905 | return found; | |
906 | } | |
907 | ||
908 | static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth, | |
909 | void *context, void **ret) | |
910 | { | |
911 | struct resource *res = context; | |
912 | struct acpi_device **consumer = (struct acpi_device **) ret; | |
99ece713 | 913 | struct acpi_device *adev = acpi_fetch_acpi_dev(handle); |
00710984 | 914 | |
99ece713 | 915 | if (!adev) |
00710984 BH |
916 | return AE_OK; |
917 | ||
918 | if (acpi_dev_consumes_res(adev, res)) { | |
919 | *consumer = adev; | |
920 | return AE_CTRL_TERMINATE; | |
921 | } | |
922 | ||
923 | return AE_OK; | |
924 | } | |
925 | ||
926 | /** | |
927 | * acpi_resource_consumer - Find the ACPI device that consumes @res. | |
928 | * @res: Resource to search for. | |
929 | * | |
930 | * Search the current resource settings (_CRS) of every ACPI device node | |
931 | * for @res. If we find an ACPI device whose _CRS includes @res, return | |
932 | * it. Otherwise, return NULL. | |
933 | */ | |
934 | struct acpi_device *acpi_resource_consumer(struct resource *res) | |
935 | { | |
936 | struct acpi_device *consumer = NULL; | |
937 | ||
938 | acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer); | |
939 | return consumer; | |
940 | } |