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 break;
254 case ACPI_IO_RANGE:
255 acpi_dev_ioresource_flags(res, len, iodec,
256 addr->info.io.translation_type);
257 break;
258 case ACPI_BUS_NUMBER_RANGE:
259 res->flags = IORESOURCE_BUS;
260 break;
261 default:
262 return false;
263 }
264
265 if (addr->producer_consumer == ACPI_PRODUCER)
266 res->flags |= IORESOURCE_WINDOW;
267
268 if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
269 res->flags |= IORESOURCE_PREFETCH;
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 X1704VAP */
445 .matches = {
446 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
447 DMI_MATCH(DMI_BOARD_NAME, "X1704VAP"),
448 },
449 },
450 {
451 /* Asus ExpertBook B1402C* */
452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
454 DMI_MATCH(DMI_BOARD_NAME, "B1402C"),
455 },
456 },
457 {
458 /* Asus ExpertBook B1502C* */
459 .matches = {
460 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
461 DMI_MATCH(DMI_BOARD_NAME, "B1502C"),
462 },
463 },
464 {
465 /* Asus ExpertBook B2402 (B2402CBA / B2402FBA / B2402CVA / B2402FVA) */
466 .matches = {
467 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
468 DMI_MATCH(DMI_BOARD_NAME, "B2402"),
469 },
470 },
471 {
472 /* Asus ExpertBook B2502 (B2502CBA / B2502FBA / B2502CVA / B2502FVA) */
473 .matches = {
474 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
475 DMI_MATCH(DMI_BOARD_NAME, "B2502"),
476 },
477 },
478 {
479 /* Asus Vivobook Go E1404GA* */
480 .matches = {
481 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
482 DMI_MATCH(DMI_BOARD_NAME, "E1404GA"),
483 },
484 },
485 {
486 /* Asus Vivobook E1504GA* */
487 .matches = {
488 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
489 DMI_MATCH(DMI_BOARD_NAME, "E1504GA"),
490 },
491 },
492 {
493 /* Asus Vivobook Pro N6506M* */
494 .matches = {
495 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
496 DMI_MATCH(DMI_BOARD_NAME, "N6506M"),
497 },
498 },
499 {
500 /* LG Electronics 17U70P */
501 .matches = {
502 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
503 DMI_MATCH(DMI_BOARD_NAME, "17U70P"),
504 },
505 },
506 {
507 /* LG Electronics 16T90SP */
508 .matches = {
509 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
510 DMI_MATCH(DMI_BOARD_NAME, "16T90SP"),
511 },
512 },
513 { }
514 };
515
516 /*
517 * DMI matches for AMD Zen boards where the DSDT specifies the kbd IRQ
518 * as falling edge and this must be overridden to rising edge,
519 * to have a working keyboard.
520 */
521 static const struct dmi_system_id irq1_edge_low_force_override[] = {
522 {
523 /* MECHREV Jiaolong17KS Series GM7XG0M */
524 .matches = {
525 DMI_MATCH(DMI_BOARD_NAME, "GM7XG0M"),
526 },
527 },
528 {
529 /* XMG APEX 17 (M23) */
530 .matches = {
531 DMI_MATCH(DMI_BOARD_NAME, "GMxBGxx"),
532 },
533 },
534 {
535 /* TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD */
536 .matches = {
537 DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
538 },
539 },
540 {
541 /* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */
542 .matches = {
543 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
544 },
545 },
546 {
547 /* TongFang GMxXGxX/TUXEDO Polaris 15 Gen5 AMD */
548 .matches = {
549 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxX"),
550 },
551 },
552 {
553 /* TongFang GMxXGxx sold as Eluktronics Inc. RP-15 */
554 .matches = {
555 DMI_MATCH(DMI_SYS_VENDOR, "Eluktronics Inc."),
556 DMI_MATCH(DMI_BOARD_NAME, "RP-15"),
557 },
558 },
559 {
560 /* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */
561 .matches = {
562 DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
563 },
564 },
565 {
566 /* MAINGEAR Vector Pro 2 15 */
567 .matches = {
568 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
569 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"),
570 }
571 },
572 {
573 /* MAINGEAR Vector Pro 2 17 */
574 .matches = {
575 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
576 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"),
577 },
578 },
579 {
580 /* TongFang GM6BGEQ / PCSpecialist Elimina Pro 16 M, RTX 3050 */
581 .matches = {
582 DMI_MATCH(DMI_BOARD_NAME, "GM6BGEQ"),
583 },
584 },
585 {
586 /* TongFang GM6BG5Q, RTX 4050 */
587 .matches = {
588 DMI_MATCH(DMI_BOARD_NAME, "GM6BG5Q"),
589 },
590 },
591 {
592 /* TongFang GM6BG0Q / PCSpecialist Elimina Pro 16 M, RTX 4060 */
593 .matches = {
594 DMI_MATCH(DMI_BOARD_NAME, "GM6BG0Q"),
595 },
596 },
597 {
598 /* Infinity E15-5A165-BM */
599 .matches = {
600 DMI_MATCH(DMI_BOARD_NAME, "GM5RG1E0009COM"),
601 },
602 },
603 {
604 /* Infinity E15-5A305-1M */
605 .matches = {
606 DMI_MATCH(DMI_BOARD_NAME, "GM5RGEE0016COM"),
607 },
608 },
609 {
610 /* Lunnen Ground 15 / AMD Ryzen 5 5500U */
611 .matches = {
612 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
613 DMI_MATCH(DMI_BOARD_NAME, "LLL5DAW"),
614 },
615 },
616 {
617 /* Lunnen Ground 16 / AMD Ryzen 7 5800U */
618 .matches = {
619 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
620 DMI_MATCH(DMI_BOARD_NAME, "LL6FA"),
621 },
622 },
623 {
624 /* MAIBENBEN X577 */
625 .matches = {
626 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
627 DMI_MATCH(DMI_BOARD_NAME, "X577"),
628 },
629 },
630 {
631 /* Maibenben X565 */
632 .matches = {
633 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
634 DMI_MATCH(DMI_BOARD_NAME, "X565"),
635 },
636 },
637 {
638 /* TongFang GXxHRXx/TUXEDO InfinityBook Pro Gen9 AMD */
639 .matches = {
640 DMI_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
641 },
642 },
643 {
644 /* TongFang GMxHGxx/TUXEDO Stellaris Slim Gen1 AMD */
645 .matches = {
646 DMI_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
647 },
648 },
649 { }
650 };
651
652 struct irq_override_cmp {
653 const struct dmi_system_id *system;
654 unsigned char irq;
655 unsigned char triggering;
656 unsigned char polarity;
657 unsigned char shareable;
658 bool override;
659 };
660
661 static const struct irq_override_cmp override_table[] = {
662 { irq1_level_low_skip_override, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
663 { irq1_edge_low_force_override, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
664 };
665
acpi_dev_irq_override(u32 gsi,u8 triggering,u8 polarity,u8 shareable)666 static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
667 u8 shareable)
668 {
669 int i;
670
671 for (i = 0; i < ARRAY_SIZE(override_table); i++) {
672 const struct irq_override_cmp *entry = &override_table[i];
673
674 if (dmi_check_system(entry->system) &&
675 entry->irq == gsi &&
676 entry->triggering == triggering &&
677 entry->polarity == polarity &&
678 entry->shareable == shareable)
679 return entry->override;
680 }
681
682 #ifdef CONFIG_X86
683 /*
684 * Always use the MADT override info, except for the i8042 PS/2 ctrl
685 * IRQs (1 and 12). For these the DSDT IRQ settings should sometimes
686 * be used otherwise PS/2 keyboards / mice will not work.
687 */
688 if (gsi != 1 && gsi != 12)
689 return true;
690
691 /* If the override comes from an INT_SRC_OVR MADT entry, honor it. */
692 if (acpi_int_src_ovr[gsi])
693 return true;
694
695 /*
696 * IRQ override isn't needed on modern AMD Zen systems and
697 * this override breaks active low IRQs on AMD Ryzen 6000 and
698 * newer systems. Skip it.
699 */
700 if (boot_cpu_has(X86_FEATURE_ZEN))
701 return false;
702 #endif
703
704 return true;
705 }
706
acpi_dev_get_irqresource(struct resource * res,u32 gsi,u8 triggering,u8 polarity,u8 shareable,u8 wake_capable,bool check_override)707 static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
708 u8 triggering, u8 polarity, u8 shareable,
709 u8 wake_capable, bool check_override)
710 {
711 int irq, p, t;
712
713 if (!valid_IRQ(gsi)) {
714 irqresource_disabled(res, gsi);
715 return;
716 }
717
718 /*
719 * In IO-APIC mode, use overridden attribute. Two reasons:
720 * 1. BIOS bug in DSDT
721 * 2. BIOS uses IO-APIC mode Interrupt Source Override
722 *
723 * We do this only if we are dealing with IRQ() or IRQNoFlags()
724 * resource (the legacy ISA resources). With modern ACPI 5 devices
725 * using extended IRQ descriptors we take the IRQ configuration
726 * from _CRS directly.
727 */
728 if (check_override &&
729 acpi_dev_irq_override(gsi, triggering, polarity, shareable) &&
730 !acpi_get_override_irq(gsi, &t, &p)) {
731 u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
732 u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
733
734 if (triggering != trig || polarity != pol) {
735 pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi,
736 t ? "level" : "edge",
737 trig == triggering ? "" : "(!)",
738 p ? "low" : "high",
739 pol == polarity ? "" : "(!)");
740 triggering = trig;
741 polarity = pol;
742 }
743 }
744
745 res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable);
746 irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
747 if (irq >= 0) {
748 res->start = irq;
749 res->end = irq;
750 } else {
751 irqresource_disabled(res, gsi);
752 }
753 }
754
755 /**
756 * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information.
757 * @ares: Input ACPI resource object.
758 * @index: Index into the array of GSIs represented by the resource.
759 * @res: Output generic resource object.
760 *
761 * Check if the given ACPI resource object represents an interrupt resource
762 * and @index does not exceed the resource's interrupt count (true is returned
763 * in that case regardless of the results of the other checks)). If that's the
764 * case, register the GSI corresponding to @index from the array of interrupts
765 * represented by the resource and populate the generic resource object pointed
766 * to by @res accordingly. If the registration of the GSI is not successful,
767 * IORESOURCE_DISABLED will be set it that object's flags.
768 *
769 * Return:
770 * 1) false with res->flags setting to zero: not the expected resource type
771 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
772 * 3) true: valid assigned resource
773 */
acpi_dev_resource_interrupt(struct acpi_resource * ares,int index,struct resource * res)774 bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
775 struct resource *res)
776 {
777 struct acpi_resource_irq *irq;
778 struct acpi_resource_extended_irq *ext_irq;
779
780 switch (ares->type) {
781 case ACPI_RESOURCE_TYPE_IRQ:
782 /*
783 * Per spec, only one interrupt per descriptor is allowed in
784 * _CRS, but some firmware violates this, so parse them all.
785 */
786 irq = &ares->data.irq;
787 if (index >= irq->interrupt_count) {
788 irqresource_disabled(res, 0);
789 return false;
790 }
791 acpi_dev_get_irqresource(res, irq->interrupts[index],
792 irq->triggering, irq->polarity,
793 irq->shareable, irq->wake_capable,
794 true);
795 break;
796 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
797 ext_irq = &ares->data.extended_irq;
798 if (index >= ext_irq->interrupt_count) {
799 irqresource_disabled(res, 0);
800 return false;
801 }
802 if (is_gsi(ext_irq))
803 acpi_dev_get_irqresource(res, ext_irq->interrupts[index],
804 ext_irq->triggering, ext_irq->polarity,
805 ext_irq->shareable, ext_irq->wake_capable,
806 false);
807 else
808 irqresource_disabled(res, 0);
809 break;
810 default:
811 res->flags = 0;
812 return false;
813 }
814
815 return true;
816 }
817 EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt);
818
819 /**
820 * acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources().
821 * @list: The head of the resource list to free.
822 */
acpi_dev_free_resource_list(struct list_head * list)823 void acpi_dev_free_resource_list(struct list_head *list)
824 {
825 resource_list_free(list);
826 }
827 EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
828
829 struct res_proc_context {
830 struct list_head *list;
831 int (*preproc)(struct acpi_resource *, void *);
832 void *preproc_data;
833 int count;
834 int error;
835 };
836
acpi_dev_new_resource_entry(struct resource_win * win,struct res_proc_context * c)837 static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
838 struct res_proc_context *c)
839 {
840 struct resource_entry *rentry;
841
842 rentry = resource_list_create_entry(NULL, 0);
843 if (!rentry) {
844 c->error = -ENOMEM;
845 return AE_NO_MEMORY;
846 }
847 *rentry->res = win->res;
848 rentry->offset = win->offset;
849 resource_list_add_tail(rentry, c->list);
850 c->count++;
851 return AE_OK;
852 }
853
acpi_dev_process_resource(struct acpi_resource * ares,void * context)854 static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
855 void *context)
856 {
857 struct res_proc_context *c = context;
858 struct resource_win win;
859 struct resource *res = &win.res;
860 int i;
861
862 if (c->preproc) {
863 int ret;
864
865 ret = c->preproc(ares, c->preproc_data);
866 if (ret < 0) {
867 c->error = ret;
868 return AE_ABORT_METHOD;
869 } else if (ret > 0) {
870 return AE_OK;
871 }
872 }
873
874 memset(&win, 0, sizeof(win));
875
876 if (acpi_dev_resource_memory(ares, res)
877 || acpi_dev_resource_io(ares, res)
878 || acpi_dev_resource_address_space(ares, &win)
879 || acpi_dev_resource_ext_address_space(ares, &win))
880 return acpi_dev_new_resource_entry(&win, c);
881
882 for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
883 acpi_status status;
884
885 status = acpi_dev_new_resource_entry(&win, c);
886 if (ACPI_FAILURE(status))
887 return status;
888 }
889
890 return AE_OK;
891 }
892
__acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data,char * method)893 static int __acpi_dev_get_resources(struct acpi_device *adev,
894 struct list_head *list,
895 int (*preproc)(struct acpi_resource *, void *),
896 void *preproc_data, char *method)
897 {
898 struct res_proc_context c;
899 acpi_status status;
900
901 if (!adev || !adev->handle || !list_empty(list))
902 return -EINVAL;
903
904 if (!acpi_has_method(adev->handle, method))
905 return 0;
906
907 c.list = list;
908 c.preproc = preproc;
909 c.preproc_data = preproc_data;
910 c.count = 0;
911 c.error = 0;
912 status = acpi_walk_resources(adev->handle, method,
913 acpi_dev_process_resource, &c);
914 if (ACPI_FAILURE(status)) {
915 acpi_dev_free_resource_list(list);
916 return c.error ? c.error : -EIO;
917 }
918
919 return c.count;
920 }
921
922 /**
923 * acpi_dev_get_resources - Get current resources of a device.
924 * @adev: ACPI device node to get the resources for.
925 * @list: Head of the resultant list of resources (must be empty).
926 * @preproc: The caller's preprocessing routine.
927 * @preproc_data: Pointer passed to the caller's preprocessing routine.
928 *
929 * Evaluate the _CRS method for the given device node and process its output by
930 * (1) executing the @preproc() routine provided by the caller, passing the
931 * resource pointer and @preproc_data to it as arguments, for each ACPI resource
932 * returned and (2) converting all of the returned ACPI resources into struct
933 * resource objects if possible. If the return value of @preproc() in step (1)
934 * is different from 0, step (2) is not applied to the given ACPI resource and
935 * if that value is negative, the whole processing is aborted and that value is
936 * returned as the final error code.
937 *
938 * The resultant struct resource objects are put on the list pointed to by
939 * @list, that must be empty initially, as members of struct resource_entry
940 * objects. Callers of this routine should use %acpi_dev_free_resource_list() to
941 * free that list.
942 *
943 * The number of resources in the output list is returned on success, an error
944 * code reflecting the error condition is returned otherwise.
945 */
acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data)946 int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
947 int (*preproc)(struct acpi_resource *, void *),
948 void *preproc_data)
949 {
950 return __acpi_dev_get_resources(adev, list, preproc, preproc_data,
951 METHOD_NAME__CRS);
952 }
953 EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
954
is_memory(struct acpi_resource * ares,void * not_used)955 static int is_memory(struct acpi_resource *ares, void *not_used)
956 {
957 struct resource_win win;
958 struct resource *res = &win.res;
959
960 memset(&win, 0, sizeof(win));
961
962 if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM))
963 return 1;
964
965 return !(acpi_dev_resource_memory(ares, res)
966 || acpi_dev_resource_address_space(ares, &win)
967 || acpi_dev_resource_ext_address_space(ares, &win));
968 }
969
970 /**
971 * acpi_dev_get_dma_resources - Get current DMA resources of a device.
972 * @adev: ACPI device node to get the resources for.
973 * @list: Head of the resultant list of resources (must be empty).
974 *
975 * Evaluate the _DMA method for the given device node and process its
976 * output.
977 *
978 * The resultant struct resource objects are put on the list pointed to
979 * by @list, that must be empty initially, as members of struct
980 * resource_entry objects. Callers of this routine should use
981 * %acpi_dev_free_resource_list() to free that list.
982 *
983 * The number of resources in the output list is returned on success,
984 * an error code reflecting the error condition is returned otherwise.
985 */
acpi_dev_get_dma_resources(struct acpi_device * adev,struct list_head * list)986 int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list)
987 {
988 return __acpi_dev_get_resources(adev, list, is_memory, NULL,
989 METHOD_NAME__DMA);
990 }
991 EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources);
992
993 /**
994 * acpi_dev_get_memory_resources - Get current memory resources of a device.
995 * @adev: ACPI device node to get the resources for.
996 * @list: Head of the resultant list of resources (must be empty).
997 *
998 * This is a helper function that locates all memory type resources of @adev
999 * with acpi_dev_get_resources().
1000 *
1001 * The number of resources in the output list is returned on success, an error
1002 * code reflecting the error condition is returned otherwise.
1003 */
acpi_dev_get_memory_resources(struct acpi_device * adev,struct list_head * list)1004 int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list)
1005 {
1006 return acpi_dev_get_resources(adev, list, is_memory, NULL);
1007 }
1008 EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources);
1009
1010 /**
1011 * acpi_dev_filter_resource_type - Filter ACPI resource according to resource
1012 * types
1013 * @ares: Input ACPI resource object.
1014 * @types: Valid resource types of IORESOURCE_XXX
1015 *
1016 * This is a helper function to support acpi_dev_get_resources(), which filters
1017 * ACPI resource objects according to resource types.
1018 */
acpi_dev_filter_resource_type(struct acpi_resource * ares,unsigned long types)1019 int acpi_dev_filter_resource_type(struct acpi_resource *ares,
1020 unsigned long types)
1021 {
1022 unsigned long type = 0;
1023
1024 switch (ares->type) {
1025 case ACPI_RESOURCE_TYPE_MEMORY24:
1026 case ACPI_RESOURCE_TYPE_MEMORY32:
1027 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1028 type = IORESOURCE_MEM;
1029 break;
1030 case ACPI_RESOURCE_TYPE_IO:
1031 case ACPI_RESOURCE_TYPE_FIXED_IO:
1032 type = IORESOURCE_IO;
1033 break;
1034 case ACPI_RESOURCE_TYPE_IRQ:
1035 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1036 type = IORESOURCE_IRQ;
1037 break;
1038 case ACPI_RESOURCE_TYPE_DMA:
1039 case ACPI_RESOURCE_TYPE_FIXED_DMA:
1040 type = IORESOURCE_DMA;
1041 break;
1042 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1043 type = IORESOURCE_REG;
1044 break;
1045 case ACPI_RESOURCE_TYPE_ADDRESS16:
1046 case ACPI_RESOURCE_TYPE_ADDRESS32:
1047 case ACPI_RESOURCE_TYPE_ADDRESS64:
1048 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1049 if (ares->data.address.resource_type == ACPI_MEMORY_RANGE)
1050 type = IORESOURCE_MEM;
1051 else if (ares->data.address.resource_type == ACPI_IO_RANGE)
1052 type = IORESOURCE_IO;
1053 else if (ares->data.address.resource_type ==
1054 ACPI_BUS_NUMBER_RANGE)
1055 type = IORESOURCE_BUS;
1056 break;
1057 default:
1058 break;
1059 }
1060
1061 return (type & types) ? 0 : 1;
1062 }
1063 EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
1064
acpi_dev_consumes_res(struct acpi_device * adev,struct resource * res)1065 static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
1066 {
1067 struct list_head resource_list;
1068 struct resource_entry *rentry;
1069 int ret, found = 0;
1070
1071 INIT_LIST_HEAD(&resource_list);
1072 ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
1073 if (ret < 0)
1074 return 0;
1075
1076 list_for_each_entry(rentry, &resource_list, node) {
1077 if (resource_contains(rentry->res, res)) {
1078 found = 1;
1079 break;
1080 }
1081
1082 }
1083
1084 acpi_dev_free_resource_list(&resource_list);
1085 return found;
1086 }
1087
acpi_res_consumer_cb(acpi_handle handle,u32 depth,void * context,void ** ret)1088 static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
1089 void *context, void **ret)
1090 {
1091 struct resource *res = context;
1092 struct acpi_device **consumer = (struct acpi_device **) ret;
1093 struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
1094
1095 if (!adev)
1096 return AE_OK;
1097
1098 if (acpi_dev_consumes_res(adev, res)) {
1099 *consumer = adev;
1100 return AE_CTRL_TERMINATE;
1101 }
1102
1103 return AE_OK;
1104 }
1105
1106 /**
1107 * acpi_resource_consumer - Find the ACPI device that consumes @res.
1108 * @res: Resource to search for.
1109 *
1110 * Search the current resource settings (_CRS) of every ACPI device node
1111 * for @res. If we find an ACPI device whose _CRS includes @res, return
1112 * it. Otherwise, return NULL.
1113 */
acpi_resource_consumer(struct resource * res)1114 struct acpi_device *acpi_resource_consumer(struct resource *res)
1115 {
1116 struct acpi_device *consumer = NULL;
1117
1118 acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);
1119 return consumer;
1120 }
1121