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