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 ExpertBook B1402CBA */
445 .matches = {
446 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
447 DMI_MATCH(DMI_BOARD_NAME, "B1402CBA"),
448 },
449 },
450 {
451 /* Asus ExpertBook B1402CVA */
452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
454 DMI_MATCH(DMI_BOARD_NAME, "B1402CVA"),
455 },
456 },
457 {
458 /* Asus ExpertBook B1502CBA */
459 .matches = {
460 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
461 DMI_MATCH(DMI_BOARD_NAME, "B1502CBA"),
462 },
463 },
464 {
465 /* Asus ExpertBook B1502CGA */
466 .matches = {
467 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
468 DMI_MATCH(DMI_BOARD_NAME, "B1502CGA"),
469 },
470 },
471 {
472 /* Asus ExpertBook B1502CVA */
473 .matches = {
474 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
475 DMI_MATCH(DMI_BOARD_NAME, "B1502CVA"),
476 },
477 },
478 {
479 /* Asus ExpertBook B2402CBA */
480 .matches = {
481 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
482 DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"),
483 },
484 },
485 {
486 /* Asus ExpertBook B2402FBA */
487 .matches = {
488 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
489 DMI_MATCH(DMI_BOARD_NAME, "B2402FBA"),
490 },
491 },
492 {
493 /* Asus ExpertBook B2502 */
494 .matches = {
495 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
496 DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"),
497 },
498 },
499 {
500 /* Asus ExpertBook B2502FBA */
501 .matches = {
502 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
503 DMI_MATCH(DMI_BOARD_NAME, "B2502FBA"),
504 },
505 },
506 {
507 /* Asus Vivobook Go E1404GAB */
508 .matches = {
509 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
510 DMI_MATCH(DMI_BOARD_NAME, "E1404GAB"),
511 },
512 },
513 {
514 /* Asus Vivobook E1504GA */
515 .matches = {
516 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
517 DMI_MATCH(DMI_BOARD_NAME, "E1504GA"),
518 },
519 },
520 {
521 /* Asus Vivobook E1504GAB */
522 .matches = {
523 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
524 DMI_MATCH(DMI_BOARD_NAME, "E1504GAB"),
525 },
526 },
527 {
528 /* Asus Vivobook Pro N6506MV */
529 .matches = {
530 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
531 DMI_MATCH(DMI_BOARD_NAME, "N6506MV"),
532 },
533 },
534 {
535 /* Asus Vivobook Pro N6506MU */
536 .matches = {
537 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
538 DMI_MATCH(DMI_BOARD_NAME, "N6506MU"),
539 },
540 },
541 {
542 /* Asus Vivobook Pro N6506MJ */
543 .matches = {
544 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
545 DMI_MATCH(DMI_BOARD_NAME, "N6506MJ"),
546 },
547 },
548 {
549 /* LG Electronics 17U70P */
550 .matches = {
551 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
552 DMI_MATCH(DMI_BOARD_NAME, "17U70P"),
553 },
554 },
555 { }
556 };
557
558 /*
559 * DMI matches for AMD Zen boards where the DSDT specifies the kbd IRQ
560 * as falling edge and this must be overridden to rising edge,
561 * to have a working keyboard.
562 */
563 static const struct dmi_system_id irq1_edge_low_force_override[] = {
564 {
565 /* MECHREV Jiaolong17KS Series GM7XG0M */
566 .matches = {
567 DMI_MATCH(DMI_BOARD_NAME, "GM7XG0M"),
568 },
569 },
570 {
571 /* XMG APEX 17 (M23) */
572 .matches = {
573 DMI_MATCH(DMI_BOARD_NAME, "GMxBGxx"),
574 },
575 },
576 {
577 /* TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD */
578 .matches = {
579 DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
580 },
581 },
582 {
583 /* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */
584 .matches = {
585 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
586 },
587 },
588 {
589 /* TongFang GMxXGxX/TUXEDO Polaris 15 Gen5 AMD */
590 .matches = {
591 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxX"),
592 },
593 },
594 {
595 /* TongFang GMxXGxx sold as Eluktronics Inc. RP-15 */
596 .matches = {
597 DMI_MATCH(DMI_SYS_VENDOR, "Eluktronics Inc."),
598 DMI_MATCH(DMI_BOARD_NAME, "RP-15"),
599 },
600 },
601 {
602 /* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */
603 .matches = {
604 DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
605 },
606 },
607 {
608 /* MAINGEAR Vector Pro 2 15 */
609 .matches = {
610 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
611 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"),
612 }
613 },
614 {
615 /* MAINGEAR Vector Pro 2 17 */
616 .matches = {
617 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
618 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"),
619 },
620 },
621 {
622 /* TongFang GM6BGEQ / PCSpecialist Elimina Pro 16 M, RTX 3050 */
623 .matches = {
624 DMI_MATCH(DMI_BOARD_NAME, "GM6BGEQ"),
625 },
626 },
627 {
628 /* TongFang GM6BG5Q, RTX 4050 */
629 .matches = {
630 DMI_MATCH(DMI_BOARD_NAME, "GM6BG5Q"),
631 },
632 },
633 {
634 /* TongFang GM6BG0Q / PCSpecialist Elimina Pro 16 M, RTX 4060 */
635 .matches = {
636 DMI_MATCH(DMI_BOARD_NAME, "GM6BG0Q"),
637 },
638 },
639 {
640 /* Infinity E15-5A165-BM */
641 .matches = {
642 DMI_MATCH(DMI_BOARD_NAME, "GM5RG1E0009COM"),
643 },
644 },
645 {
646 /* Infinity E15-5A305-1M */
647 .matches = {
648 DMI_MATCH(DMI_BOARD_NAME, "GM5RGEE0016COM"),
649 },
650 },
651 {
652 /* Lunnen Ground 15 / AMD Ryzen 5 5500U */
653 .matches = {
654 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
655 DMI_MATCH(DMI_BOARD_NAME, "LLL5DAW"),
656 },
657 },
658 {
659 /* Lunnen Ground 16 / AMD Ryzen 7 5800U */
660 .matches = {
661 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"),
662 DMI_MATCH(DMI_BOARD_NAME, "LL6FA"),
663 },
664 },
665 {
666 /* MAIBENBEN X577 */
667 .matches = {
668 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
669 DMI_MATCH(DMI_BOARD_NAME, "X577"),
670 },
671 },
672 {
673 /* Maibenben X565 */
674 .matches = {
675 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"),
676 DMI_MATCH(DMI_BOARD_NAME, "X565"),
677 },
678 },
679 {
680 /* TongFang GXxHRXx/TUXEDO InfinityBook Pro Gen9 AMD */
681 .matches = {
682 DMI_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
683 },
684 },
685 {
686 /* TongFang GMxHGxx/TUXEDO Stellaris Slim Gen1 AMD */
687 .matches = {
688 DMI_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
689 },
690 },
691 { }
692 };
693
694 struct irq_override_cmp {
695 const struct dmi_system_id *system;
696 unsigned char irq;
697 unsigned char triggering;
698 unsigned char polarity;
699 unsigned char shareable;
700 bool override;
701 };
702
703 static const struct irq_override_cmp override_table[] = {
704 { irq1_level_low_skip_override, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
705 { irq1_edge_low_force_override, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
706 };
707
acpi_dev_irq_override(u32 gsi,u8 triggering,u8 polarity,u8 shareable)708 static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
709 u8 shareable)
710 {
711 int i;
712
713 for (i = 0; i < ARRAY_SIZE(override_table); i++) {
714 const struct irq_override_cmp *entry = &override_table[i];
715
716 if (dmi_check_system(entry->system) &&
717 entry->irq == gsi &&
718 entry->triggering == triggering &&
719 entry->polarity == polarity &&
720 entry->shareable == shareable)
721 return entry->override;
722 }
723
724 #ifdef CONFIG_X86
725 /*
726 * Always use the MADT override info, except for the i8042 PS/2 ctrl
727 * IRQs (1 and 12). For these the DSDT IRQ settings should sometimes
728 * be used otherwise PS/2 keyboards / mice will not work.
729 */
730 if (gsi != 1 && gsi != 12)
731 return true;
732
733 /* If the override comes from an INT_SRC_OVR MADT entry, honor it. */
734 if (acpi_int_src_ovr[gsi])
735 return true;
736
737 /*
738 * IRQ override isn't needed on modern AMD Zen systems and
739 * this override breaks active low IRQs on AMD Ryzen 6000 and
740 * newer systems. Skip it.
741 */
742 if (boot_cpu_has(X86_FEATURE_ZEN))
743 return false;
744 #endif
745
746 return true;
747 }
748
acpi_dev_get_irqresource(struct resource * res,u32 gsi,u8 triggering,u8 polarity,u8 shareable,u8 wake_capable,bool check_override)749 static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
750 u8 triggering, u8 polarity, u8 shareable,
751 u8 wake_capable, bool check_override)
752 {
753 int irq, p, t;
754
755 if (!valid_IRQ(gsi)) {
756 irqresource_disabled(res, gsi);
757 return;
758 }
759
760 /*
761 * In IO-APIC mode, use overridden attribute. Two reasons:
762 * 1. BIOS bug in DSDT
763 * 2. BIOS uses IO-APIC mode Interrupt Source Override
764 *
765 * We do this only if we are dealing with IRQ() or IRQNoFlags()
766 * resource (the legacy ISA resources). With modern ACPI 5 devices
767 * using extended IRQ descriptors we take the IRQ configuration
768 * from _CRS directly.
769 */
770 if (check_override &&
771 acpi_dev_irq_override(gsi, triggering, polarity, shareable) &&
772 !acpi_get_override_irq(gsi, &t, &p)) {
773 u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
774 u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
775
776 if (triggering != trig || polarity != pol) {
777 pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi,
778 t ? "level" : "edge",
779 trig == triggering ? "" : "(!)",
780 p ? "low" : "high",
781 pol == polarity ? "" : "(!)");
782 triggering = trig;
783 polarity = pol;
784 }
785 }
786
787 res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable);
788 irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
789 if (irq >= 0) {
790 res->start = irq;
791 res->end = irq;
792 } else {
793 irqresource_disabled(res, gsi);
794 }
795 }
796
797 /**
798 * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information.
799 * @ares: Input ACPI resource object.
800 * @index: Index into the array of GSIs represented by the resource.
801 * @res: Output generic resource object.
802 *
803 * Check if the given ACPI resource object represents an interrupt resource
804 * and @index does not exceed the resource's interrupt count (true is returned
805 * in that case regardless of the results of the other checks)). If that's the
806 * case, register the GSI corresponding to @index from the array of interrupts
807 * represented by the resource and populate the generic resource object pointed
808 * to by @res accordingly. If the registration of the GSI is not successful,
809 * IORESOURCE_DISABLED will be set it that object's flags.
810 *
811 * Return:
812 * 1) false with res->flags setting to zero: not the expected resource type
813 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
814 * 3) true: valid assigned resource
815 */
acpi_dev_resource_interrupt(struct acpi_resource * ares,int index,struct resource * res)816 bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
817 struct resource *res)
818 {
819 struct acpi_resource_irq *irq;
820 struct acpi_resource_extended_irq *ext_irq;
821
822 switch (ares->type) {
823 case ACPI_RESOURCE_TYPE_IRQ:
824 /*
825 * Per spec, only one interrupt per descriptor is allowed in
826 * _CRS, but some firmware violates this, so parse them all.
827 */
828 irq = &ares->data.irq;
829 if (index >= irq->interrupt_count) {
830 irqresource_disabled(res, 0);
831 return false;
832 }
833 acpi_dev_get_irqresource(res, irq->interrupts[index],
834 irq->triggering, irq->polarity,
835 irq->shareable, irq->wake_capable,
836 true);
837 break;
838 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
839 ext_irq = &ares->data.extended_irq;
840 if (index >= ext_irq->interrupt_count) {
841 irqresource_disabled(res, 0);
842 return false;
843 }
844 if (is_gsi(ext_irq))
845 acpi_dev_get_irqresource(res, ext_irq->interrupts[index],
846 ext_irq->triggering, ext_irq->polarity,
847 ext_irq->shareable, ext_irq->wake_capable,
848 false);
849 else
850 irqresource_disabled(res, 0);
851 break;
852 default:
853 res->flags = 0;
854 return false;
855 }
856
857 return true;
858 }
859 EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt);
860
861 /**
862 * acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources().
863 * @list: The head of the resource list to free.
864 */
acpi_dev_free_resource_list(struct list_head * list)865 void acpi_dev_free_resource_list(struct list_head *list)
866 {
867 resource_list_free(list);
868 }
869 EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
870
871 struct res_proc_context {
872 struct list_head *list;
873 int (*preproc)(struct acpi_resource *, void *);
874 void *preproc_data;
875 int count;
876 int error;
877 };
878
acpi_dev_new_resource_entry(struct resource_win * win,struct res_proc_context * c)879 static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
880 struct res_proc_context *c)
881 {
882 struct resource_entry *rentry;
883
884 rentry = resource_list_create_entry(NULL, 0);
885 if (!rentry) {
886 c->error = -ENOMEM;
887 return AE_NO_MEMORY;
888 }
889 *rentry->res = win->res;
890 rentry->offset = win->offset;
891 resource_list_add_tail(rentry, c->list);
892 c->count++;
893 return AE_OK;
894 }
895
acpi_dev_process_resource(struct acpi_resource * ares,void * context)896 static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
897 void *context)
898 {
899 struct res_proc_context *c = context;
900 struct resource_win win;
901 struct resource *res = &win.res;
902 int i;
903
904 if (c->preproc) {
905 int ret;
906
907 ret = c->preproc(ares, c->preproc_data);
908 if (ret < 0) {
909 c->error = ret;
910 return AE_ABORT_METHOD;
911 } else if (ret > 0) {
912 return AE_OK;
913 }
914 }
915
916 memset(&win, 0, sizeof(win));
917
918 if (acpi_dev_resource_memory(ares, res)
919 || acpi_dev_resource_io(ares, res)
920 || acpi_dev_resource_address_space(ares, &win)
921 || acpi_dev_resource_ext_address_space(ares, &win))
922 return acpi_dev_new_resource_entry(&win, c);
923
924 for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
925 acpi_status status;
926
927 status = acpi_dev_new_resource_entry(&win, c);
928 if (ACPI_FAILURE(status))
929 return status;
930 }
931
932 return AE_OK;
933 }
934
__acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data,char * method)935 static int __acpi_dev_get_resources(struct acpi_device *adev,
936 struct list_head *list,
937 int (*preproc)(struct acpi_resource *, void *),
938 void *preproc_data, char *method)
939 {
940 struct res_proc_context c;
941 acpi_status status;
942
943 if (!adev || !adev->handle || !list_empty(list))
944 return -EINVAL;
945
946 if (!acpi_has_method(adev->handle, method))
947 return 0;
948
949 c.list = list;
950 c.preproc = preproc;
951 c.preproc_data = preproc_data;
952 c.count = 0;
953 c.error = 0;
954 status = acpi_walk_resources(adev->handle, method,
955 acpi_dev_process_resource, &c);
956 if (ACPI_FAILURE(status)) {
957 acpi_dev_free_resource_list(list);
958 return c.error ? c.error : -EIO;
959 }
960
961 return c.count;
962 }
963
964 /**
965 * acpi_dev_get_resources - Get current resources of a device.
966 * @adev: ACPI device node to get the resources for.
967 * @list: Head of the resultant list of resources (must be empty).
968 * @preproc: The caller's preprocessing routine.
969 * @preproc_data: Pointer passed to the caller's preprocessing routine.
970 *
971 * Evaluate the _CRS method for the given device node and process its output by
972 * (1) executing the @preproc() routine provided by the caller, passing the
973 * resource pointer and @preproc_data to it as arguments, for each ACPI resource
974 * returned and (2) converting all of the returned ACPI resources into struct
975 * resource objects if possible. If the return value of @preproc() in step (1)
976 * is different from 0, step (2) is not applied to the given ACPI resource and
977 * if that value is negative, the whole processing is aborted and that value is
978 * returned as the final error code.
979 *
980 * The resultant struct resource objects are put on the list pointed to by
981 * @list, that must be empty initially, as members of struct resource_entry
982 * objects. Callers of this routine should use %acpi_dev_free_resource_list() to
983 * free that list.
984 *
985 * The number of resources in the output list is returned on success, an error
986 * code reflecting the error condition is returned otherwise.
987 */
acpi_dev_get_resources(struct acpi_device * adev,struct list_head * list,int (* preproc)(struct acpi_resource *,void *),void * preproc_data)988 int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
989 int (*preproc)(struct acpi_resource *, void *),
990 void *preproc_data)
991 {
992 return __acpi_dev_get_resources(adev, list, preproc, preproc_data,
993 METHOD_NAME__CRS);
994 }
995 EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
996
is_memory(struct acpi_resource * ares,void * not_used)997 static int is_memory(struct acpi_resource *ares, void *not_used)
998 {
999 struct resource_win win;
1000 struct resource *res = &win.res;
1001
1002 memset(&win, 0, sizeof(win));
1003
1004 if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM))
1005 return 1;
1006
1007 return !(acpi_dev_resource_memory(ares, res)
1008 || acpi_dev_resource_address_space(ares, &win)
1009 || acpi_dev_resource_ext_address_space(ares, &win));
1010 }
1011
1012 /**
1013 * acpi_dev_get_dma_resources - Get current DMA resources of a device.
1014 * @adev: ACPI device node to get the resources for.
1015 * @list: Head of the resultant list of resources (must be empty).
1016 *
1017 * Evaluate the _DMA method for the given device node and process its
1018 * output.
1019 *
1020 * The resultant struct resource objects are put on the list pointed to
1021 * by @list, that must be empty initially, as members of struct
1022 * resource_entry objects. Callers of this routine should use
1023 * %acpi_dev_free_resource_list() to free that list.
1024 *
1025 * The number of resources in the output list is returned on success,
1026 * an error code reflecting the error condition is returned otherwise.
1027 */
acpi_dev_get_dma_resources(struct acpi_device * adev,struct list_head * list)1028 int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list)
1029 {
1030 return __acpi_dev_get_resources(adev, list, is_memory, NULL,
1031 METHOD_NAME__DMA);
1032 }
1033 EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources);
1034
1035 /**
1036 * acpi_dev_get_memory_resources - Get current memory resources of a device.
1037 * @adev: ACPI device node to get the resources for.
1038 * @list: Head of the resultant list of resources (must be empty).
1039 *
1040 * This is a helper function that locates all memory type resources of @adev
1041 * with acpi_dev_get_resources().
1042 *
1043 * The number of resources in the output list is returned on success, an error
1044 * code reflecting the error condition is returned otherwise.
1045 */
acpi_dev_get_memory_resources(struct acpi_device * adev,struct list_head * list)1046 int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list)
1047 {
1048 return acpi_dev_get_resources(adev, list, is_memory, NULL);
1049 }
1050 EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources);
1051
1052 /**
1053 * acpi_dev_filter_resource_type - Filter ACPI resource according to resource
1054 * types
1055 * @ares: Input ACPI resource object.
1056 * @types: Valid resource types of IORESOURCE_XXX
1057 *
1058 * This is a helper function to support acpi_dev_get_resources(), which filters
1059 * ACPI resource objects according to resource types.
1060 */
acpi_dev_filter_resource_type(struct acpi_resource * ares,unsigned long types)1061 int acpi_dev_filter_resource_type(struct acpi_resource *ares,
1062 unsigned long types)
1063 {
1064 unsigned long type = 0;
1065
1066 switch (ares->type) {
1067 case ACPI_RESOURCE_TYPE_MEMORY24:
1068 case ACPI_RESOURCE_TYPE_MEMORY32:
1069 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1070 type = IORESOURCE_MEM;
1071 break;
1072 case ACPI_RESOURCE_TYPE_IO:
1073 case ACPI_RESOURCE_TYPE_FIXED_IO:
1074 type = IORESOURCE_IO;
1075 break;
1076 case ACPI_RESOURCE_TYPE_IRQ:
1077 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1078 type = IORESOURCE_IRQ;
1079 break;
1080 case ACPI_RESOURCE_TYPE_DMA:
1081 case ACPI_RESOURCE_TYPE_FIXED_DMA:
1082 type = IORESOURCE_DMA;
1083 break;
1084 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1085 type = IORESOURCE_REG;
1086 break;
1087 case ACPI_RESOURCE_TYPE_ADDRESS16:
1088 case ACPI_RESOURCE_TYPE_ADDRESS32:
1089 case ACPI_RESOURCE_TYPE_ADDRESS64:
1090 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1091 if (ares->data.address.resource_type == ACPI_MEMORY_RANGE)
1092 type = IORESOURCE_MEM;
1093 else if (ares->data.address.resource_type == ACPI_IO_RANGE)
1094 type = IORESOURCE_IO;
1095 else if (ares->data.address.resource_type ==
1096 ACPI_BUS_NUMBER_RANGE)
1097 type = IORESOURCE_BUS;
1098 break;
1099 default:
1100 break;
1101 }
1102
1103 return (type & types) ? 0 : 1;
1104 }
1105 EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
1106
acpi_dev_consumes_res(struct acpi_device * adev,struct resource * res)1107 static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
1108 {
1109 struct list_head resource_list;
1110 struct resource_entry *rentry;
1111 int ret, found = 0;
1112
1113 INIT_LIST_HEAD(&resource_list);
1114 ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
1115 if (ret < 0)
1116 return 0;
1117
1118 list_for_each_entry(rentry, &resource_list, node) {
1119 if (resource_contains(rentry->res, res)) {
1120 found = 1;
1121 break;
1122 }
1123
1124 }
1125
1126 acpi_dev_free_resource_list(&resource_list);
1127 return found;
1128 }
1129
acpi_res_consumer_cb(acpi_handle handle,u32 depth,void * context,void ** ret)1130 static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
1131 void *context, void **ret)
1132 {
1133 struct resource *res = context;
1134 struct acpi_device **consumer = (struct acpi_device **) ret;
1135 struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
1136
1137 if (!adev)
1138 return AE_OK;
1139
1140 if (acpi_dev_consumes_res(adev, res)) {
1141 *consumer = adev;
1142 return AE_CTRL_TERMINATE;
1143 }
1144
1145 return AE_OK;
1146 }
1147
1148 /**
1149 * acpi_resource_consumer - Find the ACPI device that consumes @res.
1150 * @res: Resource to search for.
1151 *
1152 * Search the current resource settings (_CRS) of every ACPI device node
1153 * for @res. If we find an ACPI device whose _CRS includes @res, return
1154 * it. Otherwise, return NULL.
1155 */
acpi_resource_consumer(struct resource * res)1156 struct acpi_device *acpi_resource_consumer(struct resource *res)
1157 {
1158 struct acpi_device *consumer = NULL;
1159
1160 acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);
1161 return consumer;
1162 }
1163