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 static const struct dmi_system_id medion_laptop[] = {
389 {
390 .ident = "MEDION P15651",
391 .matches = {
392 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
393 DMI_MATCH(DMI_BOARD_NAME, "M15T"),
394 },
395 },
396 {
397 .ident = "MEDION S17405",
398 .matches = {
399 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
400 DMI_MATCH(DMI_BOARD_NAME, "M17T"),
401 },
402 },
403 {
404 .ident = "MEDION S17413",
405 .matches = {
406 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
407 DMI_MATCH(DMI_BOARD_NAME, "M1xA"),
408 },
409 },
410 { }
411 };
412
413 static const struct dmi_system_id asus_laptop[] = {
414 {
415 .ident = "Asus Vivobook K3402ZA",
416 .matches = {
417 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
418 DMI_MATCH(DMI_BOARD_NAME, "K3402ZA"),
419 },
420 },
421 {
422 .ident = "Asus Vivobook K3502ZA",
423 .matches = {
424 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
425 DMI_MATCH(DMI_BOARD_NAME, "K3502ZA"),
426 },
427 },
428 {
429 .ident = "Asus Vivobook S5402ZA",
430 .matches = {
431 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
432 DMI_MATCH(DMI_BOARD_NAME, "S5402ZA"),
433 },
434 },
435 {
436 .ident = "Asus Vivobook S5602ZA",
437 .matches = {
438 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
439 DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"),
440 },
441 },
442 {
443 .ident = "Asus ExpertBook B1402CBA",
444 .matches = {
445 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
446 DMI_MATCH(DMI_BOARD_NAME, "B1402CBA"),
447 },
448 },
449 {
450 /* Asus ExpertBook B1402CVA */
451 .matches = {
452 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
453 DMI_MATCH(DMI_BOARD_NAME, "B1402CVA"),
454 },
455 },
456 {
457 .ident = "Asus ExpertBook B1502CBA",
458 .matches = {
459 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
460 DMI_MATCH(DMI_BOARD_NAME, "B1502CBA"),
461 },
462 },
463 {
464 .ident = "Asus ExpertBook B2402CBA",
465 .matches = {
466 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
467 DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"),
468 },
469 },
470 {
471 .ident = "Asus ExpertBook B2402FBA",
472 .matches = {
473 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
474 DMI_MATCH(DMI_BOARD_NAME, "B2402FBA"),
475 },
476 },
477 {
478 .ident = "Asus ExpertBook B2502",
479 .matches = {
480 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
481 DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"),
482 },
483 },
484 { }
485 };
486
487 static const struct dmi_system_id tongfang_gm_rg[] = {
488 {
489 .ident = "TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD",
490 .matches = {
491 DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
492 },
493 },
494 { }
495 };
496
497 static const struct dmi_system_id maingear_laptop[] = {
498 {
499 .ident = "MAINGEAR Vector Pro 2 15",
500 .matches = {
501 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
502 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"),
503 }
504 },
505 {
506 /* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */
507 .matches = {
508 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
509 },
510 },
511 {
512 /* TongFang GMxXGxX/TUXEDO Polaris 15 Gen5 AMD */
513 .matches = {
514 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxX"),
515 },
516 },
517 {
518 /* TongFang GMxXGxx sold as Eluktronics Inc. RP-15 */
519 .matches = {
520 DMI_MATCH(DMI_SYS_VENDOR, "Eluktronics Inc."),
521 DMI_MATCH(DMI_BOARD_NAME, "RP-15"),
522 },
523 },
524 {
525 /* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */
526 .matches = {
527 DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
528 },
529 },
530 {
531 .ident = "MAINGEAR Vector Pro 2 17",
532 .matches = {
533 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
534 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"),
535 },
536 },
537 { }
538 };
539
540 static const struct dmi_system_id pcspecialist_laptop[] = {
541 {
542 /* TongFang GM6BGEQ / PCSpecialist Elimina Pro 16 M, RTX 3050 */
543 .matches = {
544 DMI_MATCH(DMI_BOARD_NAME, "GM6BGEQ"),
545 },
546 },
547 {
548 /* TongFang GM6BG5Q, RTX 4050 */
549 .matches = {
550 DMI_MATCH(DMI_BOARD_NAME, "GM6BG5Q"),
551 },
552 },
553 {
554 /* TongFang GM6BG0Q / PCSpecialist Elimina Pro 16 M, RTX 4060 */
555 .matches = {
556 DMI_MATCH(DMI_BOARD_NAME, "GM6BG0Q"),
557 },
558 },
559 {
560 /* Infinity E15-5A165-BM */
561 .matches = {
562 DMI_MATCH(DMI_BOARD_NAME, "GM5RG1E0009COM"),
563 },
564 },
565 {
566 /* Infinity E15-5A305-1M */
567 .matches = {
568 DMI_MATCH(DMI_BOARD_NAME, "GM5RGEE0016COM"),
569 },
570 },
571 {
572 /* Lunnen Ground 15 / AMD Ryzen 5 5500U */
573 .matches = {
574 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
575 DMI_MATCH(DMI_BOARD_NAME, "LLL5DAW"),
576 },
577 },
578 {
579 /* Lunnen Ground 16 / AMD Ryzen 7 5800U */
580 .matches = {
581 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
582 DMI_MATCH(DMI_BOARD_NAME, "LL6FA"),
583 },
584 },
585 {
586 /* MAIBENBEN X577 */
587 .matches = {
588 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
589 DMI_MATCH(DMI_BOARD_NAME, "X577"),
590 },
591 },
592 { }
593 };
594
595 static const struct dmi_system_id lg_laptop[] = {
596 {
597 .ident = "LG Electronics 17U70P",
598 .matches = {
599 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
600 DMI_MATCH(DMI_BOARD_NAME, "17U70P"),
601 },
602 },
603 {
604 /* TongFang GXxHRXx/TUXEDO InfinityBook Pro Gen9 AMD */
605 .matches = {
606 DMI_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
607 },
608 },
609 {
610 /* TongFang GMxHGxx/TUXEDO Stellaris Slim Gen1 AMD */
611 .matches = {
612 DMI_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
613 },
614 },
615 { }
616 };
617
618 struct irq_override_cmp {
619 const struct dmi_system_id *system;
620 unsigned char irq;
621 unsigned char triggering;
622 unsigned char polarity;
623 unsigned char shareable;
624 bool override;
625 };
626
627 static const struct irq_override_cmp override_table[] = {
628 { medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
629 { asus_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
630 { tongfang_gm_rg, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
631 { maingear_laptop, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
632 { pcspecialist_laptop, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
633 { lg_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
634 };
635
acpi_dev_irq_override(u32 gsi,u8 triggering,u8 polarity,u8 shareable)636 static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
637 u8 shareable)
638 {
639 int i;
640
641 for (i = 0; i < ARRAY_SIZE(override_table); i++) {
642 const struct irq_override_cmp *entry = &override_table[i];
643
644 if (dmi_check_system(entry->system) &&
645 entry->irq == gsi &&
646 entry->triggering == triggering &&
647 entry->polarity == polarity &&
648 entry->shareable == shareable)
649 return entry->override;
650 }
651
652 #ifdef CONFIG_X86
653 /*
654 * Always use the MADT override info, except for the i8042 PS/2 ctrl
655 * IRQs (1 and 12). For these the DSDT IRQ settings should sometimes
656 * be used otherwise PS/2 keyboards / mice will not work.
657 */
658 if (gsi != 1 && gsi != 12)
659 return true;
660
661 /* If the override comes from an INT_SRC_OVR MADT entry, honor it. */
662 if (acpi_int_src_ovr[gsi])
663 return true;
664
665 /*
666 * IRQ override isn't needed on modern AMD Zen systems and
667 * this override breaks active low IRQs on AMD Ryzen 6000 and
668 * newer systems. Skip it.
669 */
670 if (boot_cpu_has(X86_FEATURE_ZEN))
671 return false;
672 #endif
673
674 return true;
675 }
676
acpi_dev_get_irqresource(struct resource * res,u32 gsi,u8 triggering,u8 polarity,u8 shareable,u8 wake_capable,bool check_override)677 static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
678 u8 triggering, u8 polarity, u8 shareable,
679 u8 wake_capable, bool check_override)
680 {
681 int irq, p, t;
682
683 if (!valid_IRQ(gsi)) {
684 irqresource_disabled(res, gsi);
685 return;
686 }
687
688 /*
689 * In IO-APIC mode, use overridden attribute. Two reasons:
690 * 1. BIOS bug in DSDT
691 * 2. BIOS uses IO-APIC mode Interrupt Source Override
692 *
693 * We do this only if we are dealing with IRQ() or IRQNoFlags()
694 * resource (the legacy ISA resources). With modern ACPI 5 devices
695 * using extended IRQ descriptors we take the IRQ configuration
696 * from _CRS directly.
697 */
698 if (check_override &&
699 acpi_dev_irq_override(gsi, triggering, polarity, shareable) &&
700 !acpi_get_override_irq(gsi, &t, &p)) {
701 u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
702 u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
703
704 if (triggering != trig || polarity != pol) {
705 pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi,
706 t ? "level" : "edge",
707 trig == triggering ? "" : "(!)",
708 p ? "low" : "high",
709 pol == polarity ? "" : "(!)");
710 triggering = trig;
711 polarity = pol;
712 }
713 }
714
715 res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable);
716 irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
717 if (irq >= 0) {
718 res->start = irq;
719 res->end = irq;
720 } else {
721 irqresource_disabled(res, gsi);
722 }
723 }
724
725 /**
726 * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information.
727 * @ares: Input ACPI resource object.
728 * @index: Index into the array of GSIs represented by the resource.
729 * @res: Output generic resource object.
730 *
731 * Check if the given ACPI resource object represents an interrupt resource
732 * and @index does not exceed the resource's interrupt count (true is returned
733 * in that case regardless of the results of the other checks)). If that's the
734 * case, register the GSI corresponding to @index from the array of interrupts
735 * represented by the resource and populate the generic resource object pointed
736 * to by @res accordingly. If the registration of the GSI is not successful,
737 * IORESOURCE_DISABLED will be set it that object's flags.
738 *
739 * Return:
740 * 1) false with res->flags setting to zero: not the expected resource type
741 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
742 * 3) true: valid assigned resource
743 */
acpi_dev_resource_interrupt(struct acpi_resource * ares,int index,struct resource * res)744 bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
745 struct resource *res)
746 {
747 struct acpi_resource_irq *irq;
748 struct acpi_resource_extended_irq *ext_irq;
749
750 switch (ares->type) {
751 case ACPI_RESOURCE_TYPE_IRQ:
752 /*
753 * Per spec, only one interrupt per descriptor is allowed in
754 * _CRS, but some firmware violates this, so parse them all.
755 */
756 irq = &ares->data.irq;
757 if (index >= irq->interrupt_count) {
758 irqresource_disabled(res, 0);
759 return false;
760 }
761 acpi_dev_get_irqresource(res, irq->interrupts[index],
762 irq->triggering, irq->polarity,
763 irq->shareable, irq->wake_capable,
764 true);
765 break;
766 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
767 ext_irq = &ares->data.extended_irq;
768 if (index >= ext_irq->interrupt_count) {
769 irqresource_disabled(res, 0);
770 return false;
771 }
772 if (is_gsi(ext_irq))
773 acpi_dev_get_irqresource(res, ext_irq->interrupts[index],
774 ext_irq->triggering, ext_irq->polarity,
775 ext_irq->shareable, ext_irq->wake_capable,
776 false);
777 else
778 irqresource_disabled(res, 0);
779 break;
780 default:
781 res->flags = 0;
782 return false;
783 }
784
785 return true;
786 }
787 EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt);
788
789 /**
790 * acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources().
791 * @list: The head of the resource list to free.
792 */
acpi_dev_free_resource_list(struct list_head * list)793 void acpi_dev_free_resource_list(struct list_head *list)
794 {
795 resource_list_free(list);
796 }
797 EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
798
799 struct res_proc_context {
800 struct list_head *list;
801 int (*preproc)(struct acpi_resource *, void *);
802 void *preproc_data;
803 int count;
804 int error;
805 };
806
acpi_dev_new_resource_entry(struct resource_win * win,struct res_proc_context * c)807 static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
808 struct res_proc_context *c)
809 {
810 struct resource_entry *rentry;
811
812 rentry = resource_list_create_entry(NULL, 0);
813 if (!rentry) {
814 c->error = -ENOMEM;
815 return AE_NO_MEMORY;
816 }
817 *rentry->res = win->res;
818 rentry->offset = win->offset;
819 resource_list_add_tail(rentry, c->list);
820 c->count++;
821 return AE_OK;
822 }
823
acpi_dev_process_resource(struct acpi_resource * ares,void * context)824 static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
825 void *context)
826 {
827 struct res_proc_context *c = context;
828 struct resource_win win;
829 struct resource *res = &win.res;
830 int i;
831
832 if (c->preproc) {
833 int ret;
834
835 ret = c->preproc(ares, c->preproc_data);
836 if (ret < 0) {
837 c->error = ret;
838 return AE_ABORT_METHOD;
839 } else if (ret > 0) {
840 return AE_OK;
841 }
842 }
843
844 memset(&win, 0, sizeof(win));
845
846 if (acpi_dev_resource_memory(ares, res)
847 || acpi_dev_resource_io(ares, res)
848 || acpi_dev_resource_address_space(ares, &win)
849 || acpi_dev_resource_ext_address_space(ares, &win))
850 return acpi_dev_new_resource_entry(&win, c);
851
852 for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
853 acpi_status status;
854
855 status = acpi_dev_new_resource_entry(&win, c);
856 if (ACPI_FAILURE(status))
857 return status;
858 }
859
860 return AE_OK;
861 }
862
__acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data,char * method)863 static int __acpi_dev_get_resources(struct acpi_device *adev,
864 struct list_head *list,
865 int (*preproc)(struct acpi_resource *, void *),
866 void *preproc_data, char *method)
867 {
868 struct res_proc_context c;
869 acpi_status status;
870
871 if (!adev || !adev->handle || !list_empty(list))
872 return -EINVAL;
873
874 if (!acpi_has_method(adev->handle, method))
875 return 0;
876
877 c.list = list;
878 c.preproc = preproc;
879 c.preproc_data = preproc_data;
880 c.count = 0;
881 c.error = 0;
882 status = acpi_walk_resources(adev->handle, method,
883 acpi_dev_process_resource, &c);
884 if (ACPI_FAILURE(status)) {
885 acpi_dev_free_resource_list(list);
886 return c.error ? c.error : -EIO;
887 }
888
889 return c.count;
890 }
891
892 /**
893 * acpi_dev_get_resources - Get current resources of a device.
894 * @adev: ACPI device node to get the resources for.
895 * @list: Head of the resultant list of resources (must be empty).
896 * @preproc: The caller's preprocessing routine.
897 * @preproc_data: Pointer passed to the caller's preprocessing routine.
898 *
899 * Evaluate the _CRS method for the given device node and process its output by
900 * (1) executing the @preproc() routine provided by the caller, passing the
901 * resource pointer and @preproc_data to it as arguments, for each ACPI resource
902 * returned and (2) converting all of the returned ACPI resources into struct
903 * resource objects if possible. If the return value of @preproc() in step (1)
904 * is different from 0, step (2) is not applied to the given ACPI resource and
905 * if that value is negative, the whole processing is aborted and that value is
906 * returned as the final error code.
907 *
908 * The resultant struct resource objects are put on the list pointed to by
909 * @list, that must be empty initially, as members of struct resource_entry
910 * objects. Callers of this routine should use %acpi_dev_free_resource_list() to
911 * free that list.
912 *
913 * The number of resources in the output list is returned on success, an error
914 * code reflecting the error condition is returned otherwise.
915 */
acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data)916 int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
917 int (*preproc)(struct acpi_resource *, void *),
918 void *preproc_data)
919 {
920 return __acpi_dev_get_resources(adev, list, preproc, preproc_data,
921 METHOD_NAME__CRS);
922 }
923 EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
924
is_memory(struct acpi_resource * ares,void * not_used)925 static int is_memory(struct acpi_resource *ares, void *not_used)
926 {
927 struct resource_win win;
928 struct resource *res = &win.res;
929
930 memset(&win, 0, sizeof(win));
931
932 if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM))
933 return 1;
934
935 return !(acpi_dev_resource_memory(ares, res)
936 || acpi_dev_resource_address_space(ares, &win)
937 || acpi_dev_resource_ext_address_space(ares, &win));
938 }
939
940 /**
941 * acpi_dev_get_dma_resources - Get current DMA resources of a device.
942 * @adev: ACPI device node to get the resources for.
943 * @list: Head of the resultant list of resources (must be empty).
944 *
945 * Evaluate the _DMA method for the given device node and process its
946 * output.
947 *
948 * The resultant struct resource objects are put on the list pointed to
949 * by @list, that must be empty initially, as members of struct
950 * resource_entry objects. Callers of this routine should use
951 * %acpi_dev_free_resource_list() to free that list.
952 *
953 * The number of resources in the output list is returned on success,
954 * an error code reflecting the error condition is returned otherwise.
955 */
acpi_dev_get_dma_resources(struct acpi_device * adev,struct list_head * list)956 int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list)
957 {
958 return __acpi_dev_get_resources(adev, list, is_memory, NULL,
959 METHOD_NAME__DMA);
960 }
961 EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources);
962
963 /**
964 * acpi_dev_get_memory_resources - Get current memory resources of a device.
965 * @adev: ACPI device node to get the resources for.
966 * @list: Head of the resultant list of resources (must be empty).
967 *
968 * This is a helper function that locates all memory type resources of @adev
969 * with acpi_dev_get_resources().
970 *
971 * The number of resources in the output list is returned on success, an error
972 * code reflecting the error condition is returned otherwise.
973 */
acpi_dev_get_memory_resources(struct acpi_device * adev,struct list_head * list)974 int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list)
975 {
976 return acpi_dev_get_resources(adev, list, is_memory, NULL);
977 }
978 EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources);
979
980 /**
981 * acpi_dev_filter_resource_type - Filter ACPI resource according to resource
982 * types
983 * @ares: Input ACPI resource object.
984 * @types: Valid resource types of IORESOURCE_XXX
985 *
986 * This is a helper function to support acpi_dev_get_resources(), which filters
987 * ACPI resource objects according to resource types.
988 */
acpi_dev_filter_resource_type(struct acpi_resource * ares,unsigned long types)989 int acpi_dev_filter_resource_type(struct acpi_resource *ares,
990 unsigned long types)
991 {
992 unsigned long type = 0;
993
994 switch (ares->type) {
995 case ACPI_RESOURCE_TYPE_MEMORY24:
996 case ACPI_RESOURCE_TYPE_MEMORY32:
997 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
998 type = IORESOURCE_MEM;
999 break;
1000 case ACPI_RESOURCE_TYPE_IO:
1001 case ACPI_RESOURCE_TYPE_FIXED_IO:
1002 type = IORESOURCE_IO;
1003 break;
1004 case ACPI_RESOURCE_TYPE_IRQ:
1005 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1006 type = IORESOURCE_IRQ;
1007 break;
1008 case ACPI_RESOURCE_TYPE_DMA:
1009 case ACPI_RESOURCE_TYPE_FIXED_DMA:
1010 type = IORESOURCE_DMA;
1011 break;
1012 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1013 type = IORESOURCE_REG;
1014 break;
1015 case ACPI_RESOURCE_TYPE_ADDRESS16:
1016 case ACPI_RESOURCE_TYPE_ADDRESS32:
1017 case ACPI_RESOURCE_TYPE_ADDRESS64:
1018 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1019 if (ares->data.address.resource_type == ACPI_MEMORY_RANGE)
1020 type = IORESOURCE_MEM;
1021 else if (ares->data.address.resource_type == ACPI_IO_RANGE)
1022 type = IORESOURCE_IO;
1023 else if (ares->data.address.resource_type ==
1024 ACPI_BUS_NUMBER_RANGE)
1025 type = IORESOURCE_BUS;
1026 break;
1027 default:
1028 break;
1029 }
1030
1031 return (type & types) ? 0 : 1;
1032 }
1033 EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
1034
acpi_dev_consumes_res(struct acpi_device * adev,struct resource * res)1035 static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
1036 {
1037 struct list_head resource_list;
1038 struct resource_entry *rentry;
1039 int ret, found = 0;
1040
1041 INIT_LIST_HEAD(&resource_list);
1042 ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
1043 if (ret < 0)
1044 return 0;
1045
1046 list_for_each_entry(rentry, &resource_list, node) {
1047 if (resource_contains(rentry->res, res)) {
1048 found = 1;
1049 break;
1050 }
1051
1052 }
1053
1054 acpi_dev_free_resource_list(&resource_list);
1055 return found;
1056 }
1057
acpi_res_consumer_cb(acpi_handle handle,u32 depth,void * context,void ** ret)1058 static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
1059 void *context, void **ret)
1060 {
1061 struct resource *res = context;
1062 struct acpi_device **consumer = (struct acpi_device **) ret;
1063 struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
1064
1065 if (!adev)
1066 return AE_OK;
1067
1068 if (acpi_dev_consumes_res(adev, res)) {
1069 *consumer = adev;
1070 return AE_CTRL_TERMINATE;
1071 }
1072
1073 return AE_OK;
1074 }
1075
1076 /**
1077 * acpi_resource_consumer - Find the ACPI device that consumes @res.
1078 * @res: Resource to search for.
1079 *
1080 * Search the current resource settings (_CRS) of every ACPI device node
1081 * for @res. If we find an ACPI device whose _CRS includes @res, return
1082 * it. Otherwise, return NULL.
1083 */
acpi_resource_consumer(struct resource * res)1084 struct acpi_device *acpi_resource_consumer(struct resource *res)
1085 {
1086 struct acpi_device *consumer = NULL;
1087
1088 acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);
1089 return consumer;
1090 }
1091