1 // SPDX-License-Identifier: GPL-2.0-only
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 *
10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 */
12
13 #include <linux/acpi.h>
14 #include <linux/device.h>
15 #include <linux/export.h>
16 #include <linux/ioport.h>
17 #include <linux/slab.h>
18 #include <linux/irq.h>
19 #include <linux/dmi.h>
20 #include <linux/string_choices.h>
21
22 #ifdef CONFIG_X86
23 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
acpi_iospace_resource_valid(struct resource * res)24 static inline bool acpi_iospace_resource_valid(struct resource *res)
25 {
26 /* On X86 IO space is limited to the [0 - 64K] IO port range */
27 return res->end < 0x10003;
28 }
29 #else
30 #define valid_IRQ(i) (true)
31 /*
32 * ACPI IO descriptors on arches other than X86 contain MMIO CPU physical
33 * addresses mapping IO space in CPU physical address space, IO space
34 * resources can be placed anywhere in the 64-bit physical address space.
35 */
36 static inline bool
acpi_iospace_resource_valid(struct resource * res)37 acpi_iospace_resource_valid(struct resource *res) { return true; }
38 #endif
39
40 #if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI)
is_gsi(struct acpi_resource_extended_irq * ext_irq)41 static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq)
42 {
43 return ext_irq->resource_source.string_length == 0 &&
44 ext_irq->producer_consumer == ACPI_CONSUMER;
45 }
46 #else
is_gsi(struct acpi_resource_extended_irq * ext_irq)47 static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq)
48 {
49 return true;
50 }
51 #endif
52
acpi_dev_resource_len_valid(u64 start,u64 end,u64 len,bool io)53 static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io)
54 {
55 u64 reslen = end - start + 1;
56
57 /*
58 * CHECKME: len might be required to check versus a minimum
59 * length as well. 1 for io is fine, but for memory it does
60 * not make any sense at all.
61 * Note: some BIOSes report incorrect length for ACPI address space
62 * descriptor, so remove check of 'reslen == len' to avoid regression.
63 */
64 if (len && reslen && start <= end)
65 return true;
66
67 pr_debug("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n",
68 io ? "io" : "mem", start, end, len);
69
70 return false;
71 }
72
acpi_dev_memresource_flags(struct resource * res,u64 len,u8 write_protect)73 static void acpi_dev_memresource_flags(struct resource *res, u64 len,
74 u8 write_protect)
75 {
76 res->flags = IORESOURCE_MEM;
77
78 if (!acpi_dev_resource_len_valid(res->start, res->end, len, false))
79 res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
80
81 if (write_protect == ACPI_READ_WRITE_MEMORY)
82 res->flags |= IORESOURCE_MEM_WRITEABLE;
83 }
84
acpi_dev_get_memresource(struct resource * res,u64 start,u64 len,u8 write_protect)85 static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len,
86 u8 write_protect)
87 {
88 res->start = start;
89 res->end = start + len - 1;
90 acpi_dev_memresource_flags(res, len, write_protect);
91 }
92
93 /**
94 * acpi_dev_resource_memory - Extract ACPI memory resource information.
95 * @ares: Input ACPI resource object.
96 * @res: Output generic resource object.
97 *
98 * Check if the given ACPI resource object represents a memory resource and
99 * if that's the case, use the information in it to populate the generic
100 * resource object pointed to by @res.
101 *
102 * Return:
103 * 1) false with res->flags setting to zero: not the expected resource type
104 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
105 * 3) true: valid assigned resource
106 */
acpi_dev_resource_memory(struct acpi_resource * ares,struct resource * res)107 bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
108 {
109 struct acpi_resource_memory24 *memory24;
110 struct acpi_resource_memory32 *memory32;
111 struct acpi_resource_fixed_memory32 *fixed_memory32;
112
113 switch (ares->type) {
114 case ACPI_RESOURCE_TYPE_MEMORY24:
115 memory24 = &ares->data.memory24;
116 acpi_dev_get_memresource(res, memory24->minimum << 8,
117 memory24->address_length << 8,
118 memory24->write_protect);
119 break;
120 case ACPI_RESOURCE_TYPE_MEMORY32:
121 memory32 = &ares->data.memory32;
122 acpi_dev_get_memresource(res, memory32->minimum,
123 memory32->address_length,
124 memory32->write_protect);
125 break;
126 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
127 fixed_memory32 = &ares->data.fixed_memory32;
128 acpi_dev_get_memresource(res, fixed_memory32->address,
129 fixed_memory32->address_length,
130 fixed_memory32->write_protect);
131 break;
132 default:
133 res->flags = 0;
134 return false;
135 }
136
137 return !(res->flags & IORESOURCE_DISABLED);
138 }
139 EXPORT_SYMBOL_GPL(acpi_dev_resource_memory);
140
acpi_dev_ioresource_flags(struct resource * res,u64 len,u8 io_decode,u8 translation_type)141 static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
142 u8 io_decode, u8 translation_type)
143 {
144 res->flags = IORESOURCE_IO;
145
146 if (!acpi_dev_resource_len_valid(res->start, res->end, len, true))
147 res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
148
149 if (!acpi_iospace_resource_valid(res))
150 res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
151
152 if (io_decode == ACPI_DECODE_16)
153 res->flags |= IORESOURCE_IO_16BIT_ADDR;
154 if (translation_type == ACPI_SPARSE_TRANSLATION)
155 res->flags |= IORESOURCE_IO_SPARSE;
156 }
157
acpi_dev_get_ioresource(struct resource * res,u64 start,u64 len,u8 io_decode)158 static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
159 u8 io_decode)
160 {
161 res->start = start;
162 res->end = start + len - 1;
163 acpi_dev_ioresource_flags(res, len, io_decode, 0);
164 }
165
166 /**
167 * acpi_dev_resource_io - Extract ACPI I/O resource information.
168 * @ares: Input ACPI resource object.
169 * @res: Output generic resource object.
170 *
171 * Check if the given ACPI resource object represents an I/O resource and
172 * if that's the case, use the information in it to populate the generic
173 * resource object pointed to by @res.
174 *
175 * Return:
176 * 1) false with res->flags setting to zero: not the expected resource type
177 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
178 * 3) true: valid assigned resource
179 */
acpi_dev_resource_io(struct acpi_resource * ares,struct resource * res)180 bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res)
181 {
182 struct acpi_resource_io *io;
183 struct acpi_resource_fixed_io *fixed_io;
184
185 switch (ares->type) {
186 case ACPI_RESOURCE_TYPE_IO:
187 io = &ares->data.io;
188 acpi_dev_get_ioresource(res, io->minimum,
189 io->address_length,
190 io->io_decode);
191 break;
192 case ACPI_RESOURCE_TYPE_FIXED_IO:
193 fixed_io = &ares->data.fixed_io;
194 acpi_dev_get_ioresource(res, fixed_io->address,
195 fixed_io->address_length,
196 ACPI_DECODE_10);
197 break;
198 default:
199 res->flags = 0;
200 return false;
201 }
202
203 return !(res->flags & IORESOURCE_DISABLED);
204 }
205 EXPORT_SYMBOL_GPL(acpi_dev_resource_io);
206
acpi_decode_space(struct resource_win * win,struct acpi_resource_address * addr,struct acpi_address64_attribute * attr)207 static bool acpi_decode_space(struct resource_win *win,
208 struct acpi_resource_address *addr,
209 struct acpi_address64_attribute *attr)
210 {
211 u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16;
212 bool wp = addr->info.mem.write_protect;
213 u64 len = attr->address_length;
214 u64 start, end, offset = 0;
215 struct resource *res = &win->res;
216
217 /*
218 * Filter out invalid descriptor according to ACPI Spec 5.0, section
219 * 6.4.3.5 Address Space Resource Descriptors.
220 */
221 if ((addr->min_address_fixed != addr->max_address_fixed && len) ||
222 (addr->min_address_fixed && addr->max_address_fixed && !len))
223 pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n",
224 addr->min_address_fixed, addr->max_address_fixed, len);
225
226 /*
227 * For bridges that translate addresses across the bridge,
228 * translation_offset is the offset that must be added to the
229 * address on the secondary side to obtain the address on the
230 * primary side. Non-bridge devices must list 0 for all Address
231 * Translation offset bits.
232 */
233 if (addr->producer_consumer == ACPI_PRODUCER)
234 offset = attr->translation_offset;
235 else if (attr->translation_offset)
236 pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n",
237 attr->translation_offset);
238 start = attr->minimum + offset;
239 end = attr->maximum + offset;
240
241 win->offset = offset;
242 res->start = start;
243 res->end = end;
244 if (sizeof(resource_size_t) < sizeof(u64) &&
245 (offset != win->offset || start != res->start || end != res->end)) {
246 pr_warn("acpi resource window ([%#llx-%#llx] ignored, not CPU addressable)\n",
247 attr->minimum, attr->maximum);
248 return false;
249 }
250
251 switch (addr->resource_type) {
252 case ACPI_MEMORY_RANGE:
253 acpi_dev_memresource_flags(res, len, wp);
254
255 if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
256 res->flags |= IORESOURCE_PREFETCH;
257 break;
258 case ACPI_IO_RANGE:
259 acpi_dev_ioresource_flags(res, len, iodec,
260 addr->info.io.translation_type);
261 break;
262 case ACPI_BUS_NUMBER_RANGE:
263 res->flags = IORESOURCE_BUS;
264 break;
265 default:
266 return false;
267 }
268
269 if (addr->producer_consumer == ACPI_PRODUCER)
270 res->flags |= IORESOURCE_WINDOW;
271
272 return !(res->flags & IORESOURCE_DISABLED);
273 }
274
275 /**
276 * acpi_dev_resource_address_space - Extract ACPI address space information.
277 * @ares: Input ACPI resource object.
278 * @win: Output generic resource object.
279 *
280 * Check if the given ACPI resource object represents an address space resource
281 * and if that's the case, use the information in it to populate the generic
282 * resource object pointed to by @win.
283 *
284 * Return:
285 * 1) false with win->res.flags setting to zero: not the expected resource type
286 * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
287 * resource
288 * 3) true: valid assigned resource
289 */
acpi_dev_resource_address_space(struct acpi_resource * ares,struct resource_win * win)290 bool acpi_dev_resource_address_space(struct acpi_resource *ares,
291 struct resource_win *win)
292 {
293 struct acpi_resource_address64 addr;
294
295 win->res.flags = 0;
296 if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr)))
297 return false;
298
299 return acpi_decode_space(win, (struct acpi_resource_address *)&addr,
300 &addr.address);
301 }
302 EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
303
304 /**
305 * acpi_dev_resource_ext_address_space - Extract ACPI address space information.
306 * @ares: Input ACPI resource object.
307 * @win: Output generic resource object.
308 *
309 * Check if the given ACPI resource object represents an extended address space
310 * resource and if that's the case, use the information in it to populate the
311 * generic resource object pointed to by @win.
312 *
313 * Return:
314 * 1) false with win->res.flags setting to zero: not the expected resource type
315 * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
316 * resource
317 * 3) true: valid assigned resource
318 */
acpi_dev_resource_ext_address_space(struct acpi_resource * ares,struct resource_win * win)319 bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
320 struct resource_win *win)
321 {
322 struct acpi_resource_extended_address64 *ext_addr;
323
324 win->res.flags = 0;
325 if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64)
326 return false;
327
328 ext_addr = &ares->data.ext_address64;
329
330 return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr,
331 &ext_addr->address);
332 }
333 EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space);
334
335 /**
336 * acpi_dev_irq_flags - Determine IRQ resource flags.
337 * @triggering: Triggering type as provided by ACPI.
338 * @polarity: Interrupt polarity as provided by ACPI.
339 * @shareable: Whether or not the interrupt is shareable.
340 * @wake_capable: Wake capability as provided by ACPI.
341 */
acpi_dev_irq_flags(u8 triggering,u8 polarity,u8 shareable,u8 wake_capable)342 unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable, u8 wake_capable)
343 {
344 unsigned long flags;
345
346 if (triggering == ACPI_LEVEL_SENSITIVE)
347 flags = polarity == ACPI_ACTIVE_LOW ?
348 IORESOURCE_IRQ_LOWLEVEL : IORESOURCE_IRQ_HIGHLEVEL;
349 else
350 flags = polarity == ACPI_ACTIVE_LOW ?
351 IORESOURCE_IRQ_LOWEDGE : IORESOURCE_IRQ_HIGHEDGE;
352
353 if (shareable == ACPI_SHARED)
354 flags |= IORESOURCE_IRQ_SHAREABLE;
355
356 if (wake_capable == ACPI_WAKE_CAPABLE)
357 flags |= IORESOURCE_IRQ_WAKECAPABLE;
358
359 return flags | IORESOURCE_IRQ;
360 }
361 EXPORT_SYMBOL_GPL(acpi_dev_irq_flags);
362
363 /**
364 * acpi_dev_get_irq_type - Determine irq type.
365 * @triggering: Triggering type as provided by ACPI.
366 * @polarity: Interrupt polarity as provided by ACPI.
367 */
acpi_dev_get_irq_type(int triggering,int polarity)368 unsigned int acpi_dev_get_irq_type(int triggering, int polarity)
369 {
370 switch (polarity) {
371 case ACPI_ACTIVE_LOW:
372 return triggering == ACPI_EDGE_SENSITIVE ?
373 IRQ_TYPE_EDGE_FALLING :
374 IRQ_TYPE_LEVEL_LOW;
375 case ACPI_ACTIVE_HIGH:
376 return triggering == ACPI_EDGE_SENSITIVE ?
377 IRQ_TYPE_EDGE_RISING :
378 IRQ_TYPE_LEVEL_HIGH;
379 case ACPI_ACTIVE_BOTH:
380 if (triggering == ACPI_EDGE_SENSITIVE)
381 return IRQ_TYPE_EDGE_BOTH;
382 fallthrough;
383 default:
384 return IRQ_TYPE_NONE;
385 }
386 }
387 EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type);
388
389 /*
390 * DMI matches for boards where the DSDT specifies the kbd IRQ as
391 * level active-low and using the override changes this to rising edge,
392 * stopping the keyboard from working.
393 */
394 static const struct dmi_system_id irq1_level_low_skip_override[] = {
395 {
396 /* MEDION P15651 */
397 .matches = {
398 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
399 DMI_MATCH(DMI_BOARD_NAME, "M15T"),
400 },
401 },
402 {
403 /* MEDION S17405 */
404 .matches = {
405 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
406 DMI_MATCH(DMI_BOARD_NAME, "M17T"),
407 },
408 },
409 {
410 /* MEDION S17413 */
411 .matches = {
412 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
413 DMI_MATCH(DMI_BOARD_NAME, "M1xA"),
414 },
415 },
416 {
417 /* Asus Vivobook K3402ZA */
418 .matches = {
419 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
420 DMI_MATCH(DMI_BOARD_NAME, "K3402ZA"),
421 },
422 },
423 {
424 /* Asus Vivobook K3502ZA */
425 .matches = {
426 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
427 DMI_MATCH(DMI_BOARD_NAME, "K3502ZA"),
428 },
429 },
430 {
431 /* Asus Vivobook S5402ZA */
432 .matches = {
433 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
434 DMI_MATCH(DMI_BOARD_NAME, "S5402ZA"),
435 },
436 },
437 {
438 /* Asus Vivobook S5602ZA */
439 .matches = {
440 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
441 DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"),
442 },
443 },
444 {
445 /* Asus Vivobook X1404VAP */
446 .matches = {
447 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
448 DMI_MATCH(DMI_BOARD_NAME, "X1404VAP"),
449 },
450 },
451 {
452 /* Asus Vivobook X1504VAP */
453 .matches = {
454 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
455 DMI_MATCH(DMI_BOARD_NAME, "X1504VAP"),
456 },
457 },
458 {
459 /* Asus Vivobook X1704VAP */
460 .matches = {
461 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
462 DMI_MATCH(DMI_BOARD_NAME, "X1704VAP"),
463 },
464 },
465 {
466 /* Asus ExpertBook B1402C* */
467 .matches = {
468 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
469 DMI_MATCH(DMI_BOARD_NAME, "B1402C"),
470 },
471 },
472 {
473 /* Asus ExpertBook B1502C* */
474 .matches = {
475 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
476 DMI_MATCH(DMI_BOARD_NAME, "B1502C"),
477 },
478 },
479 {
480 /* Asus ExpertBook B2402 (B2402CBA / B2402FBA / B2402CVA / B2402FVA) */
481 .matches = {
482 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
483 DMI_MATCH(DMI_BOARD_NAME, "B2402"),
484 },
485 },
486 {
487 /* Asus ExpertBook B2502 (B2502CBA / B2502FBA / B2502CVA / B2502FVA) */
488 .matches = {
489 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
490 DMI_MATCH(DMI_BOARD_NAME, "B2502"),
491 },
492 },
493 {
494 /* Asus Vivobook Go E1404GA* */
495 .matches = {
496 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
497 DMI_MATCH(DMI_BOARD_NAME, "E1404GA"),
498 },
499 },
500 {
501 /* Asus Vivobook E1504GA* */
502 .matches = {
503 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
504 DMI_MATCH(DMI_BOARD_NAME, "E1504GA"),
505 },
506 },
507 {
508 /* Asus Vivobook Pro N6506M* */
509 .matches = {
510 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
511 DMI_MATCH(DMI_BOARD_NAME, "N6506M"),
512 },
513 },
514 {
515 /* Asus Vivobook Pro N6506CU* */
516 .matches = {
517 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
518 DMI_MATCH(DMI_BOARD_NAME, "N6506CU"),
519 },
520 },
521 {
522 /* LG Electronics 17U70P */
523 .matches = {
524 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
525 DMI_MATCH(DMI_BOARD_NAME, "17U70P"),
526 },
527 },
528 {
529 /* LG Electronics 16T90SP */
530 .matches = {
531 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
532 DMI_MATCH(DMI_BOARD_NAME, "16T90SP"),
533 },
534 },
535 { }
536 };
537
538 /*
539 * DMI matches for AMD Zen boards where the DSDT specifies the kbd IRQ
540 * as falling edge and this must be overridden to rising edge,
541 * to have a working keyboard.
542 */
543 static const struct dmi_system_id irq1_edge_low_force_override[] = {
544 {
545 /* MECHREVO Jiaolong17KS Series GM7XG0M */
546 .matches = {
547 DMI_MATCH(DMI_BOARD_NAME, "GM7XG0M"),
548 },
549 },
550 {
551 /* XMG APEX 17 (M23) */
552 .matches = {
553 DMI_MATCH(DMI_BOARD_NAME, "GMxBGxx"),
554 },
555 },
556 {
557 /* TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD */
558 .matches = {
559 DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
560 },
561 },
562 {
563 /* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */
564 .matches = {
565 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
566 },
567 },
568 {
569 /* TongFang GMxXGxX/TUXEDO Polaris 15 Gen5 AMD */
570 .matches = {
571 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxX"),
572 },
573 },
574 {
575 /* TongFang GMxXGxx sold as Eluktronics Inc. RP-15 */
576 .matches = {
577 DMI_MATCH(DMI_SYS_VENDOR, "Eluktronics Inc."),
578 DMI_MATCH(DMI_BOARD_NAME, "RP-15"),
579 },
580 },
581 {
582 .matches = {
583 DMI_MATCH(DMI_SYS_VENDOR, "Eluktronics Inc."),
584 DMI_MATCH(DMI_BOARD_NAME, "MECH-17"),
585 },
586 },
587 {
588 /* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */
589 .matches = {
590 DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
591 },
592 },
593 {
594 /* MAINGEAR Vector Pro 2 15 */
595 .matches = {
596 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
597 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"),
598 }
599 },
600 {
601 /* MAINGEAR Vector Pro 2 17 */
602 .matches = {
603 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
604 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"),
605 },
606 },
607 {
608 /* TongFang GM6BGEQ / PCSpecialist Elimina Pro 16 M, RTX 3050 */
609 .matches = {
610 DMI_MATCH(DMI_BOARD_NAME, "GM6BGEQ"),
611 },
612 },
613 {
614 /* TongFang GM6BG5Q, RTX 4050 */
615 .matches = {
616 DMI_MATCH(DMI_BOARD_NAME, "GM6BG5Q"),
617 },
618 },
619 {
620 /* TongFang GM6BG0Q / PCSpecialist Elimina Pro 16 M, RTX 4060 */
621 .matches = {
622 DMI_MATCH(DMI_BOARD_NAME, "GM6BG0Q"),
623 },
624 },
625 {
626 /* Infinity E15-5A165-BM */
627 .matches = {
628 DMI_MATCH(DMI_BOARD_NAME, "GM5RG1E0009COM"),
629 },
630 },
631 {
632 /* Infinity E15-5A305-1M */
633 .matches = {
634 DMI_MATCH(DMI_BOARD_NAME, "GM5RGEE0016COM"),
635 },
636 },
637 {
638 /* Lunnen Ground 15 / AMD Ryzen 5 5500U */
639 .matches = {
640 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
641 DMI_MATCH(DMI_BOARD_NAME, "LLL5DAW"),
642 },
643 },
644 {
645 /* Lunnen Ground 16 / AMD Ryzen 7 5800U */
646 .matches = {
647 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
648 DMI_MATCH(DMI_BOARD_NAME, "LL6FA"),
649 },
650 },
651 {
652 /* MAIBENBEN X577 */
653 .matches = {
654 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
655 DMI_MATCH(DMI_BOARD_NAME, "X577"),
656 },
657 },
658 {
659 /* Maibenben X565 */
660 .matches = {
661 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
662 DMI_MATCH(DMI_BOARD_NAME, "X565"),
663 },
664 },
665 {
666 /* TongFang GXxHRXx/TUXEDO InfinityBook Pro Gen9 AMD */
667 .matches = {
668 DMI_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
669 },
670 },
671 {
672 /* TongFang GMxHGxx/TUXEDO Stellaris Slim Gen1 AMD */
673 .matches = {
674 DMI_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
675 },
676 },
677 {
678 /* MACHENIKE L16P/L16P */
679 .matches = {
680 DMI_MATCH(DMI_SYS_VENDOR, "MACHENIKE"),
681 DMI_MATCH(DMI_BOARD_NAME, "L16P"),
682 },
683 },
684 {
685 /*
686 * TongFang GM5HG0A in case of the SKIKK Vanaheim relabel the
687 * board-name is changed, so check OEM strings instead. Note
688 * OEM string matches are always exact matches.
689 * https://bugzilla.kernel.org/show_bug.cgi?id=219614
690 */
691 .matches = {
692 DMI_EXACT_MATCH(DMI_OEM_STRING, "GM5HG0A"),
693 },
694 },
695 { }
696 };
697
698 struct irq_override_cmp {
699 const struct dmi_system_id *system;
700 unsigned char irq;
701 unsigned char triggering;
702 unsigned char polarity;
703 unsigned char shareable;
704 bool override;
705 };
706
707 static const struct irq_override_cmp override_table[] = {
708 { irq1_level_low_skip_override, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
709 { irq1_edge_low_force_override, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
710 };
711
acpi_dev_irq_override(u32 gsi,u8 triggering,u8 polarity,u8 shareable)712 static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
713 u8 shareable)
714 {
715 int i;
716
717 for (i = 0; i < ARRAY_SIZE(override_table); i++) {
718 const struct irq_override_cmp *entry = &override_table[i];
719
720 if (entry->irq == gsi &&
721 entry->triggering == triggering &&
722 entry->polarity == polarity &&
723 entry->shareable == shareable &&
724 dmi_check_system(entry->system))
725 return entry->override;
726 }
727
728 #ifdef CONFIG_X86
729 /*
730 * Always use the MADT override info, except for the i8042 PS/2 ctrl
731 * IRQs (1 and 12). For these the DSDT IRQ settings should sometimes
732 * be used otherwise PS/2 keyboards / mice will not work.
733 */
734 if (gsi != 1 && gsi != 12)
735 return true;
736
737 /* If the override comes from an INT_SRC_OVR MADT entry, honor it. */
738 if (acpi_int_src_ovr[gsi])
739 return true;
740
741 /*
742 * IRQ override isn't needed on modern AMD Zen systems and
743 * this override breaks active low IRQs on AMD Ryzen 6000 and
744 * newer systems. Skip it.
745 */
746 if (boot_cpu_has(X86_FEATURE_ZEN))
747 return false;
748 #endif
749
750 return true;
751 }
752
acpi_dev_get_irqresource(struct resource * res,u32 gsi,u8 triggering,u8 polarity,u8 shareable,u8 wake_capable,bool check_override)753 static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
754 u8 triggering, u8 polarity, u8 shareable,
755 u8 wake_capable, bool check_override)
756 {
757 int irq, p, t;
758
759 if (!valid_IRQ(gsi)) {
760 irqresource_disabled(res, gsi);
761 return;
762 }
763
764 /*
765 * In IO-APIC mode, use overridden attribute. Two reasons:
766 * 1. BIOS bug in DSDT
767 * 2. BIOS uses IO-APIC mode Interrupt Source Override
768 *
769 * We do this only if we are dealing with IRQ() or IRQNoFlags()
770 * resource (the legacy ISA resources). With modern ACPI 5 devices
771 * using extended IRQ descriptors we take the IRQ configuration
772 * from _CRS directly.
773 */
774 if (check_override &&
775 acpi_dev_irq_override(gsi, triggering, polarity, shareable) &&
776 !acpi_get_override_irq(gsi, &t, &p)) {
777 u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
778 u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
779
780 if (triggering != trig || polarity != pol) {
781 pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi,
782 t ? "level" : "edge",
783 trig == triggering ? "" : "(!)",
784 str_low_high(p),
785 pol == polarity ? "" : "(!)");
786 triggering = trig;
787 polarity = pol;
788 }
789 }
790
791 res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable);
792 irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
793 if (irq >= 0) {
794 res->start = irq;
795 res->end = irq;
796 } else {
797 irqresource_disabled(res, gsi);
798 }
799 }
800
801 /**
802 * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information.
803 * @ares: Input ACPI resource object.
804 * @index: Index into the array of GSIs represented by the resource.
805 * @res: Output generic resource object.
806 *
807 * Check if the given ACPI resource object represents an interrupt resource
808 * and @index does not exceed the resource's interrupt count (true is returned
809 * in that case regardless of the results of the other checks)). If that's the
810 * case, register the GSI corresponding to @index from the array of interrupts
811 * represented by the resource and populate the generic resource object pointed
812 * to by @res accordingly. If the registration of the GSI is not successful,
813 * IORESOURCE_DISABLED will be set it that object's flags.
814 *
815 * Return:
816 * 1) false with res->flags setting to zero: not the expected resource type
817 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
818 * 3) true: valid assigned resource
819 */
acpi_dev_resource_interrupt(struct acpi_resource * ares,int index,struct resource * res)820 bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
821 struct resource *res)
822 {
823 struct acpi_resource_irq *irq;
824 struct acpi_resource_extended_irq *ext_irq;
825
826 switch (ares->type) {
827 case ACPI_RESOURCE_TYPE_IRQ:
828 /*
829 * Per spec, only one interrupt per descriptor is allowed in
830 * _CRS, but some firmware violates this, so parse them all.
831 */
832 irq = &ares->data.irq;
833 if (index >= irq->interrupt_count) {
834 irqresource_disabled(res, 0);
835 return false;
836 }
837 acpi_dev_get_irqresource(res, irq->interrupts[index],
838 irq->triggering, irq->polarity,
839 irq->shareable, irq->wake_capable,
840 true);
841 break;
842 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
843 ext_irq = &ares->data.extended_irq;
844 if (index >= ext_irq->interrupt_count) {
845 irqresource_disabled(res, 0);
846 return false;
847 }
848 if (is_gsi(ext_irq))
849 acpi_dev_get_irqresource(res, ext_irq->interrupts[index],
850 ext_irq->triggering, ext_irq->polarity,
851 ext_irq->shareable, ext_irq->wake_capable,
852 false);
853 else
854 irqresource_disabled(res, 0);
855 break;
856 default:
857 res->flags = 0;
858 return false;
859 }
860
861 return true;
862 }
863 EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt);
864
865 /**
866 * acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources().
867 * @list: The head of the resource list to free.
868 */
acpi_dev_free_resource_list(struct list_head * list)869 void acpi_dev_free_resource_list(struct list_head *list)
870 {
871 resource_list_free(list);
872 }
873 EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
874
875 struct res_proc_context {
876 struct list_head *list;
877 int (*preproc)(struct acpi_resource *, void *);
878 void *preproc_data;
879 int count;
880 int error;
881 };
882
acpi_dev_new_resource_entry(struct resource_win * win,struct res_proc_context * c)883 static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
884 struct res_proc_context *c)
885 {
886 struct resource_entry *rentry;
887
888 rentry = resource_list_create_entry(NULL, 0);
889 if (!rentry) {
890 c->error = -ENOMEM;
891 return AE_NO_MEMORY;
892 }
893 *rentry->res = win->res;
894 rentry->offset = win->offset;
895 resource_list_add_tail(rentry, c->list);
896 c->count++;
897 return AE_OK;
898 }
899
acpi_dev_process_resource(struct acpi_resource * ares,void * context)900 static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
901 void *context)
902 {
903 struct res_proc_context *c = context;
904 struct resource_win win;
905 struct resource *res = &win.res;
906 int i;
907
908 if (c->preproc) {
909 int ret;
910
911 ret = c->preproc(ares, c->preproc_data);
912 if (ret < 0) {
913 c->error = ret;
914 return AE_ABORT_METHOD;
915 } else if (ret > 0) {
916 return AE_OK;
917 }
918 }
919
920 memset(&win, 0, sizeof(win));
921
922 if (acpi_dev_resource_memory(ares, res)
923 || acpi_dev_resource_io(ares, res)
924 || acpi_dev_resource_address_space(ares, &win)
925 || acpi_dev_resource_ext_address_space(ares, &win))
926 return acpi_dev_new_resource_entry(&win, c);
927
928 for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
929 acpi_status status;
930
931 status = acpi_dev_new_resource_entry(&win, c);
932 if (ACPI_FAILURE(status))
933 return status;
934 }
935
936 return AE_OK;
937 }
938
__acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data,char * method)939 static int __acpi_dev_get_resources(struct acpi_device *adev,
940 struct list_head *list,
941 int (*preproc)(struct acpi_resource *, void *),
942 void *preproc_data, char *method)
943 {
944 struct res_proc_context c;
945 acpi_status status;
946
947 if (!adev || !adev->handle || !list_empty(list))
948 return -EINVAL;
949
950 if (!acpi_has_method(adev->handle, method))
951 return 0;
952
953 c.list = list;
954 c.preproc = preproc;
955 c.preproc_data = preproc_data;
956 c.count = 0;
957 c.error = 0;
958 status = acpi_walk_resources(adev->handle, method,
959 acpi_dev_process_resource, &c);
960 if (ACPI_FAILURE(status)) {
961 acpi_dev_free_resource_list(list);
962 return c.error ? c.error : -EIO;
963 }
964
965 return c.count;
966 }
967
968 /**
969 * acpi_dev_get_resources - Get current resources of a device.
970 * @adev: ACPI device node to get the resources for.
971 * @list: Head of the resultant list of resources (must be empty).
972 * @preproc: The caller's preprocessing routine.
973 * @preproc_data: Pointer passed to the caller's preprocessing routine.
974 *
975 * Evaluate the _CRS method for the given device node and process its output by
976 * (1) executing the @preproc() routine provided by the caller, passing the
977 * resource pointer and @preproc_data to it as arguments, for each ACPI resource
978 * returned and (2) converting all of the returned ACPI resources into struct
979 * resource objects if possible. If the return value of @preproc() in step (1)
980 * is different from 0, step (2) is not applied to the given ACPI resource and
981 * if that value is negative, the whole processing is aborted and that value is
982 * returned as the final error code.
983 *
984 * The resultant struct resource objects are put on the list pointed to by
985 * @list, that must be empty initially, as members of struct resource_entry
986 * objects. Callers of this routine should use %acpi_dev_free_resource_list() to
987 * free that list.
988 *
989 * The number of resources in the output list is returned on success, an error
990 * code reflecting the error condition is returned otherwise.
991 */
acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data)992 int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
993 int (*preproc)(struct acpi_resource *, void *),
994 void *preproc_data)
995 {
996 return __acpi_dev_get_resources(adev, list, preproc, preproc_data,
997 METHOD_NAME__CRS);
998 }
999 EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
1000
is_memory(struct acpi_resource * ares,void * not_used)1001 static int is_memory(struct acpi_resource *ares, void *not_used)
1002 {
1003 struct resource_win win;
1004 struct resource *res = &win.res;
1005
1006 memset(&win, 0, sizeof(win));
1007
1008 if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM))
1009 return 1;
1010
1011 return !(acpi_dev_resource_memory(ares, res)
1012 || acpi_dev_resource_address_space(ares, &win)
1013 || acpi_dev_resource_ext_address_space(ares, &win));
1014 }
1015
1016 /**
1017 * acpi_dev_get_dma_resources - Get current DMA resources of a device.
1018 * @adev: ACPI device node to get the resources for.
1019 * @list: Head of the resultant list of resources (must be empty).
1020 *
1021 * Evaluate the _DMA method for the given device node and process its
1022 * output.
1023 *
1024 * The resultant struct resource objects are put on the list pointed to
1025 * by @list, that must be empty initially, as members of struct
1026 * resource_entry objects. Callers of this routine should use
1027 * %acpi_dev_free_resource_list() to free that list.
1028 *
1029 * The number of resources in the output list is returned on success,
1030 * an error code reflecting the error condition is returned otherwise.
1031 */
acpi_dev_get_dma_resources(struct acpi_device * adev,struct list_head * list)1032 int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list)
1033 {
1034 return __acpi_dev_get_resources(adev, list, is_memory, NULL,
1035 METHOD_NAME__DMA);
1036 }
1037 EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources);
1038
1039 /**
1040 * acpi_dev_get_memory_resources - Get current memory resources of a device.
1041 * @adev: ACPI device node to get the resources for.
1042 * @list: Head of the resultant list of resources (must be empty).
1043 *
1044 * This is a helper function that locates all memory type resources of @adev
1045 * with acpi_dev_get_resources().
1046 *
1047 * The number of resources in the output list is returned on success, an error
1048 * code reflecting the error condition is returned otherwise.
1049 */
acpi_dev_get_memory_resources(struct acpi_device * adev,struct list_head * list)1050 int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list)
1051 {
1052 return acpi_dev_get_resources(adev, list, is_memory, NULL);
1053 }
1054 EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources);
1055
1056 /**
1057 * acpi_dev_filter_resource_type - Filter ACPI resource according to resource
1058 * types
1059 * @ares: Input ACPI resource object.
1060 * @types: Valid resource types of IORESOURCE_XXX
1061 *
1062 * This is a helper function to support acpi_dev_get_resources(), which filters
1063 * ACPI resource objects according to resource types.
1064 */
acpi_dev_filter_resource_type(struct acpi_resource * ares,unsigned long types)1065 int acpi_dev_filter_resource_type(struct acpi_resource *ares,
1066 unsigned long types)
1067 {
1068 unsigned long type = 0;
1069
1070 switch (ares->type) {
1071 case ACPI_RESOURCE_TYPE_MEMORY24:
1072 case ACPI_RESOURCE_TYPE_MEMORY32:
1073 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1074 type = IORESOURCE_MEM;
1075 break;
1076 case ACPI_RESOURCE_TYPE_IO:
1077 case ACPI_RESOURCE_TYPE_FIXED_IO:
1078 type = IORESOURCE_IO;
1079 break;
1080 case ACPI_RESOURCE_TYPE_IRQ:
1081 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1082 type = IORESOURCE_IRQ;
1083 break;
1084 case ACPI_RESOURCE_TYPE_DMA:
1085 case ACPI_RESOURCE_TYPE_FIXED_DMA:
1086 type = IORESOURCE_DMA;
1087 break;
1088 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1089 type = IORESOURCE_REG;
1090 break;
1091 case ACPI_RESOURCE_TYPE_ADDRESS16:
1092 case ACPI_RESOURCE_TYPE_ADDRESS32:
1093 case ACPI_RESOURCE_TYPE_ADDRESS64:
1094 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1095 if (ares->data.address.resource_type == ACPI_MEMORY_RANGE)
1096 type = IORESOURCE_MEM;
1097 else if (ares->data.address.resource_type == ACPI_IO_RANGE)
1098 type = IORESOURCE_IO;
1099 else if (ares->data.address.resource_type ==
1100 ACPI_BUS_NUMBER_RANGE)
1101 type = IORESOURCE_BUS;
1102 break;
1103 default:
1104 break;
1105 }
1106
1107 return (type & types) ? 0 : 1;
1108 }
1109 EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
1110
acpi_dev_consumes_res(struct acpi_device * adev,struct resource * res)1111 static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
1112 {
1113 struct list_head resource_list;
1114 struct resource_entry *rentry;
1115 int ret, found = 0;
1116
1117 INIT_LIST_HEAD(&resource_list);
1118 ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
1119 if (ret < 0)
1120 return 0;
1121
1122 list_for_each_entry(rentry, &resource_list, node) {
1123 if (resource_contains(rentry->res, res)) {
1124 found = 1;
1125 break;
1126 }
1127
1128 }
1129
1130 acpi_dev_free_resource_list(&resource_list);
1131 return found;
1132 }
1133
acpi_res_consumer_cb(acpi_handle handle,u32 depth,void * context,void ** ret)1134 static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
1135 void *context, void **ret)
1136 {
1137 struct resource *res = context;
1138 struct acpi_device **consumer = (struct acpi_device **) ret;
1139 struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
1140
1141 if (!adev)
1142 return AE_OK;
1143
1144 if (acpi_dev_consumes_res(adev, res)) {
1145 *consumer = adev;
1146 return AE_CTRL_TERMINATE;
1147 }
1148
1149 return AE_OK;
1150 }
1151
1152 /**
1153 * acpi_resource_consumer - Find the ACPI device that consumes @res.
1154 * @res: Resource to search for.
1155 *
1156 * Search the current resource settings (_CRS) of every ACPI device node
1157 * for @res. If we find an ACPI device whose _CRS includes @res, return
1158 * it. Otherwise, return NULL.
1159 */
acpi_resource_consumer(struct resource * res)1160 struct acpi_device *acpi_resource_consumer(struct resource *res)
1161 {
1162 struct acpi_device *consumer = NULL;
1163
1164 acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);
1165 return consumer;
1166 }
1167