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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pnp / pnpacpi / rsparser.c
1 /*
2 * pnpacpi -- PnP ACPI driver
3 *
4 * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
5 * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
6 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
7 * Bjorn Helgaas <bjorn.helgaas@hp.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2, or (at your option) any
12 * later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23 #include <linux/kernel.h>
24 #include <linux/acpi.h>
25 #include <linux/pci.h>
26 #include <linux/pnp.h>
27 #include "../base.h"
28 #include "pnpacpi.h"
29
30 #ifdef CONFIG_IA64
31 #define valid_IRQ(i) (1)
32 #else
33 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
34 #endif
35
36 /*
37 * Allocated Resources
38 */
39 static int irq_flags(int triggering, int polarity, int shareable)
40 {
41 int flags;
42
43 if (triggering == ACPI_LEVEL_SENSITIVE) {
44 if (polarity == ACPI_ACTIVE_LOW)
45 flags = IORESOURCE_IRQ_LOWLEVEL;
46 else
47 flags = IORESOURCE_IRQ_HIGHLEVEL;
48 } else {
49 if (polarity == ACPI_ACTIVE_LOW)
50 flags = IORESOURCE_IRQ_LOWEDGE;
51 else
52 flags = IORESOURCE_IRQ_HIGHEDGE;
53 }
54
55 if (shareable == ACPI_SHARED)
56 flags |= IORESOURCE_IRQ_SHAREABLE;
57
58 return flags;
59 }
60
61 static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
62 int *polarity, int *shareable)
63 {
64 switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
65 IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE)) {
66 case IORESOURCE_IRQ_LOWLEVEL:
67 *triggering = ACPI_LEVEL_SENSITIVE;
68 *polarity = ACPI_ACTIVE_LOW;
69 break;
70 case IORESOURCE_IRQ_HIGHLEVEL:
71 *triggering = ACPI_LEVEL_SENSITIVE;
72 *polarity = ACPI_ACTIVE_HIGH;
73 break;
74 case IORESOURCE_IRQ_LOWEDGE:
75 *triggering = ACPI_EDGE_SENSITIVE;
76 *polarity = ACPI_ACTIVE_LOW;
77 break;
78 case IORESOURCE_IRQ_HIGHEDGE:
79 *triggering = ACPI_EDGE_SENSITIVE;
80 *polarity = ACPI_ACTIVE_HIGH;
81 break;
82 default:
83 dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
84 flags);
85 *triggering = ACPI_EDGE_SENSITIVE;
86 *polarity = ACPI_ACTIVE_HIGH;
87 break;
88 }
89
90 if (flags & IORESOURCE_IRQ_SHAREABLE)
91 *shareable = ACPI_SHARED;
92 else
93 *shareable = ACPI_EXCLUSIVE;
94 }
95
96 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
97 u32 gsi, int triggering,
98 int polarity, int shareable)
99 {
100 int irq, flags;
101 int p, t;
102
103 if (!valid_IRQ(gsi)) {
104 pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
105 return;
106 }
107
108 /*
109 * in IO-APIC mode, use overrided attribute. Two reasons:
110 * 1. BIOS bug in DSDT
111 * 2. BIOS uses IO-APIC mode Interrupt Source Override
112 */
113 if (!acpi_get_override_irq(gsi, &t, &p)) {
114 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
115 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
116
117 if (triggering != t || polarity != p) {
118 dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
119 gsi, t ? "edge":"level", p ? "low":"high");
120 triggering = t;
121 polarity = p;
122 }
123 }
124
125 flags = irq_flags(triggering, polarity, shareable);
126 irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
127 if (irq >= 0)
128 pcibios_penalize_isa_irq(irq, 1);
129 else
130 flags |= IORESOURCE_DISABLED;
131
132 pnp_add_irq_resource(dev, irq, flags);
133 }
134
135 static int dma_flags(struct pnp_dev *dev, int type, int bus_master,
136 int transfer)
137 {
138 int flags = 0;
139
140 if (bus_master)
141 flags |= IORESOURCE_DMA_MASTER;
142 switch (type) {
143 case ACPI_COMPATIBILITY:
144 flags |= IORESOURCE_DMA_COMPATIBLE;
145 break;
146 case ACPI_TYPE_A:
147 flags |= IORESOURCE_DMA_TYPEA;
148 break;
149 case ACPI_TYPE_B:
150 flags |= IORESOURCE_DMA_TYPEB;
151 break;
152 case ACPI_TYPE_F:
153 flags |= IORESOURCE_DMA_TYPEF;
154 break;
155 default:
156 /* Set a default value ? */
157 flags |= IORESOURCE_DMA_COMPATIBLE;
158 dev_err(&dev->dev, "invalid DMA type %d\n", type);
159 }
160 switch (transfer) {
161 case ACPI_TRANSFER_8:
162 flags |= IORESOURCE_DMA_8BIT;
163 break;
164 case ACPI_TRANSFER_8_16:
165 flags |= IORESOURCE_DMA_8AND16BIT;
166 break;
167 case ACPI_TRANSFER_16:
168 flags |= IORESOURCE_DMA_16BIT;
169 break;
170 default:
171 /* Set a default value ? */
172 flags |= IORESOURCE_DMA_8AND16BIT;
173 dev_err(&dev->dev, "invalid DMA transfer type %d\n", transfer);
174 }
175
176 return flags;
177 }
178
179 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
180 u64 len, int io_decode)
181 {
182 int flags = 0;
183 u64 end = start + len - 1;
184
185 if (io_decode == ACPI_DECODE_16)
186 flags |= IORESOURCE_IO_16BIT_ADDR;
187 if (len == 0 || end >= 0x10003)
188 flags |= IORESOURCE_DISABLED;
189
190 pnp_add_io_resource(dev, start, end, flags);
191 }
192
193 /*
194 * Device CSRs that do not appear in PCI config space should be described
195 * via ACPI. This would normally be done with Address Space Descriptors
196 * marked as "consumer-only," but old versions of Windows and Linux ignore
197 * the producer/consumer flag, so HP invented a vendor-defined resource to
198 * describe the location and size of CSR space.
199 */
200 static struct acpi_vendor_uuid hp_ccsr_uuid = {
201 .subtype = 2,
202 .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
203 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
204 };
205
206 static int vendor_resource_matches(struct pnp_dev *dev,
207 struct acpi_resource_vendor_typed *vendor,
208 struct acpi_vendor_uuid *match,
209 int expected_len)
210 {
211 int uuid_len = sizeof(vendor->uuid);
212 u8 uuid_subtype = vendor->uuid_subtype;
213 u8 *uuid = vendor->uuid;
214 int actual_len;
215
216 /* byte_length includes uuid_subtype and uuid */
217 actual_len = vendor->byte_length - uuid_len - 1;
218
219 if (uuid_subtype == match->subtype &&
220 uuid_len == sizeof(match->data) &&
221 memcmp(uuid, match->data, uuid_len) == 0) {
222 if (expected_len && expected_len != actual_len) {
223 dev_err(&dev->dev, "wrong vendor descriptor size; "
224 "expected %d, found %d bytes\n",
225 expected_len, actual_len);
226 return 0;
227 }
228
229 return 1;
230 }
231
232 return 0;
233 }
234
235 static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev,
236 struct acpi_resource_vendor_typed *vendor)
237 {
238 if (vendor_resource_matches(dev, vendor, &hp_ccsr_uuid, 16)) {
239 u64 start, length;
240
241 memcpy(&start, vendor->byte_data, sizeof(start));
242 memcpy(&length, vendor->byte_data + 8, sizeof(length));
243
244 pnp_add_mem_resource(dev, start, start + length - 1, 0);
245 }
246 }
247
248 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
249 u64 start, u64 len,
250 int write_protect)
251 {
252 int flags = 0;
253 u64 end = start + len - 1;
254
255 if (len == 0)
256 flags |= IORESOURCE_DISABLED;
257 if (write_protect == ACPI_READ_WRITE_MEMORY)
258 flags |= IORESOURCE_MEM_WRITEABLE;
259
260 pnp_add_mem_resource(dev, start, end, flags);
261 }
262
263 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
264 struct acpi_resource *res)
265 {
266 struct acpi_resource_address64 addr, *p = &addr;
267 acpi_status status;
268
269 status = acpi_resource_to_address64(res, p);
270 if (!ACPI_SUCCESS(status)) {
271 dev_warn(&dev->dev, "failed to convert resource type %d\n",
272 res->type);
273 return;
274 }
275
276 if (p->producer_consumer == ACPI_PRODUCER)
277 return;
278
279 if (p->resource_type == ACPI_MEMORY_RANGE)
280 pnpacpi_parse_allocated_memresource(dev,
281 p->minimum, p->address_length,
282 p->info.mem.write_protect);
283 else if (p->resource_type == ACPI_IO_RANGE)
284 pnpacpi_parse_allocated_ioresource(dev,
285 p->minimum, p->address_length,
286 p->granularity == 0xfff ? ACPI_DECODE_10 :
287 ACPI_DECODE_16);
288 }
289
290 static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
291 struct acpi_resource *res)
292 {
293 struct acpi_resource_extended_address64 *p = &res->data.ext_address64;
294
295 if (p->producer_consumer == ACPI_PRODUCER)
296 return;
297
298 if (p->resource_type == ACPI_MEMORY_RANGE)
299 pnpacpi_parse_allocated_memresource(dev,
300 p->minimum, p->address_length,
301 p->info.mem.write_protect);
302 else if (p->resource_type == ACPI_IO_RANGE)
303 pnpacpi_parse_allocated_ioresource(dev,
304 p->minimum, p->address_length,
305 p->granularity == 0xfff ? ACPI_DECODE_10 :
306 ACPI_DECODE_16);
307 }
308
309 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
310 void *data)
311 {
312 struct pnp_dev *dev = data;
313 struct acpi_resource_irq *irq;
314 struct acpi_resource_dma *dma;
315 struct acpi_resource_io *io;
316 struct acpi_resource_fixed_io *fixed_io;
317 struct acpi_resource_vendor_typed *vendor_typed;
318 struct acpi_resource_memory24 *memory24;
319 struct acpi_resource_memory32 *memory32;
320 struct acpi_resource_fixed_memory32 *fixed_memory32;
321 struct acpi_resource_extended_irq *extended_irq;
322 int i, flags;
323
324 switch (res->type) {
325 case ACPI_RESOURCE_TYPE_IRQ:
326 /*
327 * Per spec, only one interrupt per descriptor is allowed in
328 * _CRS, but some firmware violates this, so parse them all.
329 */
330 irq = &res->data.irq;
331 if (irq->interrupt_count == 0)
332 pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
333 else {
334 for (i = 0; i < irq->interrupt_count; i++) {
335 pnpacpi_parse_allocated_irqresource(dev,
336 irq->interrupts[i],
337 irq->triggering,
338 irq->polarity,
339 irq->sharable);
340 }
341
342 /*
343 * The IRQ encoder puts a single interrupt in each
344 * descriptor, so if a _CRS descriptor has more than
345 * one interrupt, we won't be able to re-encode it.
346 */
347 if (pnp_can_write(dev) && irq->interrupt_count > 1) {
348 dev_warn(&dev->dev, "multiple interrupts in "
349 "_CRS descriptor; configuration can't "
350 "be changed\n");
351 dev->capabilities &= ~PNP_WRITE;
352 }
353 }
354 break;
355
356 case ACPI_RESOURCE_TYPE_DMA:
357 dma = &res->data.dma;
358 if (dma->channel_count > 0 && dma->channels[0] != (u8) -1)
359 flags = dma_flags(dev, dma->type, dma->bus_master,
360 dma->transfer);
361 else
362 flags = IORESOURCE_DISABLED;
363 pnp_add_dma_resource(dev, dma->channels[0], flags);
364 break;
365
366 case ACPI_RESOURCE_TYPE_IO:
367 io = &res->data.io;
368 pnpacpi_parse_allocated_ioresource(dev,
369 io->minimum,
370 io->address_length,
371 io->io_decode);
372 break;
373
374 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
375 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
376 break;
377
378 case ACPI_RESOURCE_TYPE_FIXED_IO:
379 fixed_io = &res->data.fixed_io;
380 pnpacpi_parse_allocated_ioresource(dev,
381 fixed_io->address,
382 fixed_io->address_length,
383 ACPI_DECODE_10);
384 break;
385
386 case ACPI_RESOURCE_TYPE_VENDOR:
387 vendor_typed = &res->data.vendor_typed;
388 pnpacpi_parse_allocated_vendor(dev, vendor_typed);
389 break;
390
391 case ACPI_RESOURCE_TYPE_END_TAG:
392 break;
393
394 case ACPI_RESOURCE_TYPE_MEMORY24:
395 memory24 = &res->data.memory24;
396 pnpacpi_parse_allocated_memresource(dev,
397 memory24->minimum,
398 memory24->address_length,
399 memory24->write_protect);
400 break;
401 case ACPI_RESOURCE_TYPE_MEMORY32:
402 memory32 = &res->data.memory32;
403 pnpacpi_parse_allocated_memresource(dev,
404 memory32->minimum,
405 memory32->address_length,
406 memory32->write_protect);
407 break;
408 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
409 fixed_memory32 = &res->data.fixed_memory32;
410 pnpacpi_parse_allocated_memresource(dev,
411 fixed_memory32->address,
412 fixed_memory32->address_length,
413 fixed_memory32->write_protect);
414 break;
415 case ACPI_RESOURCE_TYPE_ADDRESS16:
416 case ACPI_RESOURCE_TYPE_ADDRESS32:
417 case ACPI_RESOURCE_TYPE_ADDRESS64:
418 pnpacpi_parse_allocated_address_space(dev, res);
419 break;
420
421 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
422 pnpacpi_parse_allocated_ext_address_space(dev, res);
423 break;
424
425 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
426 extended_irq = &res->data.extended_irq;
427
428 if (extended_irq->interrupt_count == 0)
429 pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
430 else {
431 for (i = 0; i < extended_irq->interrupt_count; i++) {
432 pnpacpi_parse_allocated_irqresource(dev,
433 extended_irq->interrupts[i],
434 extended_irq->triggering,
435 extended_irq->polarity,
436 extended_irq->sharable);
437 }
438
439 /*
440 * The IRQ encoder puts a single interrupt in each
441 * descriptor, so if a _CRS descriptor has more than
442 * one interrupt, we won't be able to re-encode it.
443 */
444 if (pnp_can_write(dev) &&
445 extended_irq->interrupt_count > 1) {
446 dev_warn(&dev->dev, "multiple interrupts in "
447 "_CRS descriptor; configuration can't "
448 "be changed\n");
449 dev->capabilities &= ~PNP_WRITE;
450 }
451 }
452 break;
453
454 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
455 break;
456
457 default:
458 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
459 res->type);
460 return AE_ERROR;
461 }
462
463 return AE_OK;
464 }
465
466 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
467 {
468 struct acpi_device *acpi_dev = dev->data;
469 acpi_handle handle = acpi_dev->handle;
470 acpi_status status;
471
472 pnp_dbg(&dev->dev, "parse allocated resources\n");
473
474 pnp_init_resources(dev);
475
476 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
477 pnpacpi_allocated_resource, dev);
478
479 if (ACPI_FAILURE(status)) {
480 if (status != AE_NOT_FOUND)
481 dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
482 return -EPERM;
483 }
484 return 0;
485 }
486
487 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
488 unsigned int option_flags,
489 struct acpi_resource_dma *p)
490 {
491 int i;
492 unsigned char map = 0, flags;
493
494 if (p->channel_count == 0)
495 return;
496
497 for (i = 0; i < p->channel_count; i++)
498 map |= 1 << p->channels[i];
499
500 flags = dma_flags(dev, p->type, p->bus_master, p->transfer);
501 pnp_register_dma_resource(dev, option_flags, map, flags);
502 }
503
504 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
505 unsigned int option_flags,
506 struct acpi_resource_irq *p)
507 {
508 int i;
509 pnp_irq_mask_t map;
510 unsigned char flags;
511
512 if (p->interrupt_count == 0)
513 return;
514
515 bitmap_zero(map.bits, PNP_IRQ_NR);
516 for (i = 0; i < p->interrupt_count; i++)
517 if (p->interrupts[i])
518 __set_bit(p->interrupts[i], map.bits);
519
520 flags = irq_flags(p->triggering, p->polarity, p->sharable);
521 pnp_register_irq_resource(dev, option_flags, &map, flags);
522 }
523
524 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
525 unsigned int option_flags,
526 struct acpi_resource_extended_irq *p)
527 {
528 int i;
529 pnp_irq_mask_t map;
530 unsigned char flags;
531
532 if (p->interrupt_count == 0)
533 return;
534
535 bitmap_zero(map.bits, PNP_IRQ_NR);
536 for (i = 0; i < p->interrupt_count; i++) {
537 if (p->interrupts[i]) {
538 if (p->interrupts[i] < PNP_IRQ_NR)
539 __set_bit(p->interrupts[i], map.bits);
540 else
541 dev_err(&dev->dev, "ignoring IRQ %d option "
542 "(too large for %d entry bitmap)\n",
543 p->interrupts[i], PNP_IRQ_NR);
544 }
545 }
546
547 flags = irq_flags(p->triggering, p->polarity, p->sharable);
548 pnp_register_irq_resource(dev, option_flags, &map, flags);
549 }
550
551 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
552 unsigned int option_flags,
553 struct acpi_resource_io *io)
554 {
555 unsigned char flags = 0;
556
557 if (io->address_length == 0)
558 return;
559
560 if (io->io_decode == ACPI_DECODE_16)
561 flags = IORESOURCE_IO_16BIT_ADDR;
562 pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum,
563 io->alignment, io->address_length, flags);
564 }
565
566 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
567 unsigned int option_flags,
568 struct acpi_resource_fixed_io *io)
569 {
570 if (io->address_length == 0)
571 return;
572
573 pnp_register_port_resource(dev, option_flags, io->address, io->address,
574 0, io->address_length, IORESOURCE_IO_FIXED);
575 }
576
577 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
578 unsigned int option_flags,
579 struct acpi_resource_memory24 *p)
580 {
581 unsigned char flags = 0;
582
583 if (p->address_length == 0)
584 return;
585
586 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
587 flags = IORESOURCE_MEM_WRITEABLE;
588 pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
589 p->alignment, p->address_length, flags);
590 }
591
592 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
593 unsigned int option_flags,
594 struct acpi_resource_memory32 *p)
595 {
596 unsigned char flags = 0;
597
598 if (p->address_length == 0)
599 return;
600
601 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
602 flags = IORESOURCE_MEM_WRITEABLE;
603 pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
604 p->alignment, p->address_length, flags);
605 }
606
607 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
608 unsigned int option_flags,
609 struct acpi_resource_fixed_memory32 *p)
610 {
611 unsigned char flags = 0;
612
613 if (p->address_length == 0)
614 return;
615
616 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
617 flags = IORESOURCE_MEM_WRITEABLE;
618 pnp_register_mem_resource(dev, option_flags, p->address, p->address,
619 0, p->address_length, flags);
620 }
621
622 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
623 unsigned int option_flags,
624 struct acpi_resource *r)
625 {
626 struct acpi_resource_address64 addr, *p = &addr;
627 acpi_status status;
628 unsigned char flags = 0;
629
630 status = acpi_resource_to_address64(r, p);
631 if (ACPI_FAILURE(status)) {
632 dev_warn(&dev->dev, "can't convert resource type %d\n",
633 r->type);
634 return;
635 }
636
637 if (p->address_length == 0)
638 return;
639
640 if (p->resource_type == ACPI_MEMORY_RANGE) {
641 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
642 flags = IORESOURCE_MEM_WRITEABLE;
643 pnp_register_mem_resource(dev, option_flags, p->minimum,
644 p->minimum, 0, p->address_length,
645 flags);
646 } else if (p->resource_type == ACPI_IO_RANGE)
647 pnp_register_port_resource(dev, option_flags, p->minimum,
648 p->minimum, 0, p->address_length,
649 IORESOURCE_IO_FIXED);
650 }
651
652 static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
653 unsigned int option_flags,
654 struct acpi_resource *r)
655 {
656 struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
657 unsigned char flags = 0;
658
659 if (p->address_length == 0)
660 return;
661
662 if (p->resource_type == ACPI_MEMORY_RANGE) {
663 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
664 flags = IORESOURCE_MEM_WRITEABLE;
665 pnp_register_mem_resource(dev, option_flags, p->minimum,
666 p->minimum, 0, p->address_length,
667 flags);
668 } else if (p->resource_type == ACPI_IO_RANGE)
669 pnp_register_port_resource(dev, option_flags, p->minimum,
670 p->minimum, 0, p->address_length,
671 IORESOURCE_IO_FIXED);
672 }
673
674 struct acpipnp_parse_option_s {
675 struct pnp_dev *dev;
676 unsigned int option_flags;
677 };
678
679 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
680 void *data)
681 {
682 int priority;
683 struct acpipnp_parse_option_s *parse_data = data;
684 struct pnp_dev *dev = parse_data->dev;
685 unsigned int option_flags = parse_data->option_flags;
686
687 switch (res->type) {
688 case ACPI_RESOURCE_TYPE_IRQ:
689 pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
690 break;
691
692 case ACPI_RESOURCE_TYPE_DMA:
693 pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
694 break;
695
696 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
697 switch (res->data.start_dpf.compatibility_priority) {
698 case ACPI_GOOD_CONFIGURATION:
699 priority = PNP_RES_PRIORITY_PREFERRED;
700 break;
701
702 case ACPI_ACCEPTABLE_CONFIGURATION:
703 priority = PNP_RES_PRIORITY_ACCEPTABLE;
704 break;
705
706 case ACPI_SUB_OPTIMAL_CONFIGURATION:
707 priority = PNP_RES_PRIORITY_FUNCTIONAL;
708 break;
709 default:
710 priority = PNP_RES_PRIORITY_INVALID;
711 break;
712 }
713 parse_data->option_flags = pnp_new_dependent_set(dev, priority);
714 break;
715
716 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
717 parse_data->option_flags = 0;
718 break;
719
720 case ACPI_RESOURCE_TYPE_IO:
721 pnpacpi_parse_port_option(dev, option_flags, &res->data.io);
722 break;
723
724 case ACPI_RESOURCE_TYPE_FIXED_IO:
725 pnpacpi_parse_fixed_port_option(dev, option_flags,
726 &res->data.fixed_io);
727 break;
728
729 case ACPI_RESOURCE_TYPE_VENDOR:
730 case ACPI_RESOURCE_TYPE_END_TAG:
731 break;
732
733 case ACPI_RESOURCE_TYPE_MEMORY24:
734 pnpacpi_parse_mem24_option(dev, option_flags,
735 &res->data.memory24);
736 break;
737
738 case ACPI_RESOURCE_TYPE_MEMORY32:
739 pnpacpi_parse_mem32_option(dev, option_flags,
740 &res->data.memory32);
741 break;
742
743 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
744 pnpacpi_parse_fixed_mem32_option(dev, option_flags,
745 &res->data.fixed_memory32);
746 break;
747
748 case ACPI_RESOURCE_TYPE_ADDRESS16:
749 case ACPI_RESOURCE_TYPE_ADDRESS32:
750 case ACPI_RESOURCE_TYPE_ADDRESS64:
751 pnpacpi_parse_address_option(dev, option_flags, res);
752 break;
753
754 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
755 pnpacpi_parse_ext_address_option(dev, option_flags, res);
756 break;
757
758 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
759 pnpacpi_parse_ext_irq_option(dev, option_flags,
760 &res->data.extended_irq);
761 break;
762
763 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
764 break;
765
766 default:
767 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
768 res->type);
769 return AE_ERROR;
770 }
771
772 return AE_OK;
773 }
774
775 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
776 {
777 struct acpi_device *acpi_dev = dev->data;
778 acpi_handle handle = acpi_dev->handle;
779 acpi_status status;
780 struct acpipnp_parse_option_s parse_data;
781
782 pnp_dbg(&dev->dev, "parse resource options\n");
783
784 parse_data.dev = dev;
785 parse_data.option_flags = 0;
786
787 status = acpi_walk_resources(handle, METHOD_NAME__PRS,
788 pnpacpi_option_resource, &parse_data);
789
790 if (ACPI_FAILURE(status)) {
791 if (status != AE_NOT_FOUND)
792 dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
793 return -EPERM;
794 }
795 return 0;
796 }
797
798 static int pnpacpi_supported_resource(struct acpi_resource *res)
799 {
800 switch (res->type) {
801 case ACPI_RESOURCE_TYPE_IRQ:
802 case ACPI_RESOURCE_TYPE_DMA:
803 case ACPI_RESOURCE_TYPE_IO:
804 case ACPI_RESOURCE_TYPE_FIXED_IO:
805 case ACPI_RESOURCE_TYPE_MEMORY24:
806 case ACPI_RESOURCE_TYPE_MEMORY32:
807 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
808 case ACPI_RESOURCE_TYPE_ADDRESS16:
809 case ACPI_RESOURCE_TYPE_ADDRESS32:
810 case ACPI_RESOURCE_TYPE_ADDRESS64:
811 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
812 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
813 return 1;
814 }
815 return 0;
816 }
817
818 /*
819 * Set resource
820 */
821 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
822 void *data)
823 {
824 int *res_cnt = data;
825
826 if (pnpacpi_supported_resource(res))
827 (*res_cnt)++;
828 return AE_OK;
829 }
830
831 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
832 {
833 struct acpi_resource **resource = data;
834
835 if (pnpacpi_supported_resource(res)) {
836 (*resource)->type = res->type;
837 (*resource)->length = sizeof(struct acpi_resource);
838 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
839 (*resource)->data.irq.descriptor_length =
840 res->data.irq.descriptor_length;
841 (*resource)++;
842 }
843
844 return AE_OK;
845 }
846
847 int pnpacpi_build_resource_template(struct pnp_dev *dev,
848 struct acpi_buffer *buffer)
849 {
850 struct acpi_device *acpi_dev = dev->data;
851 acpi_handle handle = acpi_dev->handle;
852 struct acpi_resource *resource;
853 int res_cnt = 0;
854 acpi_status status;
855
856 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
857 pnpacpi_count_resources, &res_cnt);
858 if (ACPI_FAILURE(status)) {
859 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
860 return -EINVAL;
861 }
862 if (!res_cnt)
863 return -EINVAL;
864 buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
865 buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
866 if (!buffer->pointer)
867 return -ENOMEM;
868
869 resource = (struct acpi_resource *)buffer->pointer;
870 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
871 pnpacpi_type_resources, &resource);
872 if (ACPI_FAILURE(status)) {
873 kfree(buffer->pointer);
874 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
875 return -EINVAL;
876 }
877 /* resource will pointer the end resource now */
878 resource->type = ACPI_RESOURCE_TYPE_END_TAG;
879
880 return 0;
881 }
882
883 static void pnpacpi_encode_irq(struct pnp_dev *dev,
884 struct acpi_resource *resource,
885 struct resource *p)
886 {
887 struct acpi_resource_irq *irq = &resource->data.irq;
888 int triggering, polarity, shareable;
889
890 if (!pnp_resource_enabled(p)) {
891 irq->interrupt_count = 0;
892 pnp_dbg(&dev->dev, " encode irq (%s)\n",
893 p ? "disabled" : "missing");
894 return;
895 }
896
897 decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
898 irq->triggering = triggering;
899 irq->polarity = polarity;
900 irq->sharable = shareable;
901 irq->interrupt_count = 1;
902 irq->interrupts[0] = p->start;
903
904 pnp_dbg(&dev->dev, " encode irq %d %s %s %s (%d-byte descriptor)\n",
905 (int) p->start,
906 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
907 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
908 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
909 irq->descriptor_length);
910 }
911
912 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
913 struct acpi_resource *resource,
914 struct resource *p)
915 {
916 struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
917 int triggering, polarity, shareable;
918
919 if (!pnp_resource_enabled(p)) {
920 extended_irq->interrupt_count = 0;
921 pnp_dbg(&dev->dev, " encode extended irq (%s)\n",
922 p ? "disabled" : "missing");
923 return;
924 }
925
926 decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
927 extended_irq->producer_consumer = ACPI_CONSUMER;
928 extended_irq->triggering = triggering;
929 extended_irq->polarity = polarity;
930 extended_irq->sharable = shareable;
931 extended_irq->interrupt_count = 1;
932 extended_irq->interrupts[0] = p->start;
933
934 pnp_dbg(&dev->dev, " encode irq %d %s %s %s\n", (int) p->start,
935 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
936 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
937 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
938 }
939
940 static void pnpacpi_encode_dma(struct pnp_dev *dev,
941 struct acpi_resource *resource,
942 struct resource *p)
943 {
944 struct acpi_resource_dma *dma = &resource->data.dma;
945
946 if (!pnp_resource_enabled(p)) {
947 dma->channel_count = 0;
948 pnp_dbg(&dev->dev, " encode dma (%s)\n",
949 p ? "disabled" : "missing");
950 return;
951 }
952
953 /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
954 switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
955 case IORESOURCE_DMA_TYPEA:
956 dma->type = ACPI_TYPE_A;
957 break;
958 case IORESOURCE_DMA_TYPEB:
959 dma->type = ACPI_TYPE_B;
960 break;
961 case IORESOURCE_DMA_TYPEF:
962 dma->type = ACPI_TYPE_F;
963 break;
964 default:
965 dma->type = ACPI_COMPATIBILITY;
966 }
967
968 switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
969 case IORESOURCE_DMA_8BIT:
970 dma->transfer = ACPI_TRANSFER_8;
971 break;
972 case IORESOURCE_DMA_8AND16BIT:
973 dma->transfer = ACPI_TRANSFER_8_16;
974 break;
975 default:
976 dma->transfer = ACPI_TRANSFER_16;
977 }
978
979 dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
980 dma->channel_count = 1;
981 dma->channels[0] = p->start;
982
983 pnp_dbg(&dev->dev, " encode dma %d "
984 "type %#x transfer %#x master %d\n",
985 (int) p->start, dma->type, dma->transfer, dma->bus_master);
986 }
987
988 static void pnpacpi_encode_io(struct pnp_dev *dev,
989 struct acpi_resource *resource,
990 struct resource *p)
991 {
992 struct acpi_resource_io *io = &resource->data.io;
993
994 if (pnp_resource_enabled(p)) {
995 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
996 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
997 ACPI_DECODE_16 : ACPI_DECODE_10;
998 io->minimum = p->start;
999 io->maximum = p->end;
1000 io->alignment = 0; /* Correct? */
1001 io->address_length = p->end - p->start + 1;
1002 } else {
1003 io->minimum = 0;
1004 io->address_length = 0;
1005 }
1006
1007 pnp_dbg(&dev->dev, " encode io %#x-%#x decode %#x\n", io->minimum,
1008 io->minimum + io->address_length - 1, io->io_decode);
1009 }
1010
1011 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
1012 struct acpi_resource *resource,
1013 struct resource *p)
1014 {
1015 struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
1016
1017 if (pnp_resource_enabled(p)) {
1018 fixed_io->address = p->start;
1019 fixed_io->address_length = p->end - p->start + 1;
1020 } else {
1021 fixed_io->address = 0;
1022 fixed_io->address_length = 0;
1023 }
1024
1025 pnp_dbg(&dev->dev, " encode fixed_io %#x-%#x\n", fixed_io->address,
1026 fixed_io->address + fixed_io->address_length - 1);
1027 }
1028
1029 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
1030 struct acpi_resource *resource,
1031 struct resource *p)
1032 {
1033 struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
1034
1035 if (pnp_resource_enabled(p)) {
1036 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
1037 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1038 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1039 memory24->minimum = p->start;
1040 memory24->maximum = p->end;
1041 memory24->alignment = 0;
1042 memory24->address_length = p->end - p->start + 1;
1043 } else {
1044 memory24->minimum = 0;
1045 memory24->address_length = 0;
1046 }
1047
1048 pnp_dbg(&dev->dev, " encode mem24 %#x-%#x write_protect %#x\n",
1049 memory24->minimum,
1050 memory24->minimum + memory24->address_length - 1,
1051 memory24->write_protect);
1052 }
1053
1054 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1055 struct acpi_resource *resource,
1056 struct resource *p)
1057 {
1058 struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1059
1060 if (pnp_resource_enabled(p)) {
1061 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1062 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1063 memory32->minimum = p->start;
1064 memory32->maximum = p->end;
1065 memory32->alignment = 0;
1066 memory32->address_length = p->end - p->start + 1;
1067 } else {
1068 memory32->minimum = 0;
1069 memory32->alignment = 0;
1070 }
1071
1072 pnp_dbg(&dev->dev, " encode mem32 %#x-%#x write_protect %#x\n",
1073 memory32->minimum,
1074 memory32->minimum + memory32->address_length - 1,
1075 memory32->write_protect);
1076 }
1077
1078 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1079 struct acpi_resource *resource,
1080 struct resource *p)
1081 {
1082 struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1083
1084 if (pnp_resource_enabled(p)) {
1085 fixed_memory32->write_protect =
1086 p->flags & IORESOURCE_MEM_WRITEABLE ?
1087 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1088 fixed_memory32->address = p->start;
1089 fixed_memory32->address_length = p->end - p->start + 1;
1090 } else {
1091 fixed_memory32->address = 0;
1092 fixed_memory32->address_length = 0;
1093 }
1094
1095 pnp_dbg(&dev->dev, " encode fixed_mem32 %#x-%#x write_protect %#x\n",
1096 fixed_memory32->address,
1097 fixed_memory32->address + fixed_memory32->address_length - 1,
1098 fixed_memory32->write_protect);
1099 }
1100
1101 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1102 {
1103 int i = 0;
1104 /* pnpacpi_build_resource_template allocates extra mem */
1105 int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1106 struct acpi_resource *resource = buffer->pointer;
1107 int port = 0, irq = 0, dma = 0, mem = 0;
1108
1109 pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1110 while (i < res_cnt) {
1111 switch (resource->type) {
1112 case ACPI_RESOURCE_TYPE_IRQ:
1113 pnpacpi_encode_irq(dev, resource,
1114 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1115 irq++;
1116 break;
1117
1118 case ACPI_RESOURCE_TYPE_DMA:
1119 pnpacpi_encode_dma(dev, resource,
1120 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1121 dma++;
1122 break;
1123 case ACPI_RESOURCE_TYPE_IO:
1124 pnpacpi_encode_io(dev, resource,
1125 pnp_get_resource(dev, IORESOURCE_IO, port));
1126 port++;
1127 break;
1128 case ACPI_RESOURCE_TYPE_FIXED_IO:
1129 pnpacpi_encode_fixed_io(dev, resource,
1130 pnp_get_resource(dev, IORESOURCE_IO, port));
1131 port++;
1132 break;
1133 case ACPI_RESOURCE_TYPE_MEMORY24:
1134 pnpacpi_encode_mem24(dev, resource,
1135 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1136 mem++;
1137 break;
1138 case ACPI_RESOURCE_TYPE_MEMORY32:
1139 pnpacpi_encode_mem32(dev, resource,
1140 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1141 mem++;
1142 break;
1143 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1144 pnpacpi_encode_fixed_mem32(dev, resource,
1145 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1146 mem++;
1147 break;
1148 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1149 pnpacpi_encode_ext_irq(dev, resource,
1150 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1151 irq++;
1152 break;
1153 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1154 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1155 case ACPI_RESOURCE_TYPE_VENDOR:
1156 case ACPI_RESOURCE_TYPE_END_TAG:
1157 case ACPI_RESOURCE_TYPE_ADDRESS16:
1158 case ACPI_RESOURCE_TYPE_ADDRESS32:
1159 case ACPI_RESOURCE_TYPE_ADDRESS64:
1160 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1161 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1162 default: /* other type */
1163 dev_warn(&dev->dev, "can't encode unknown resource "
1164 "type %d\n", resource->type);
1165 return -EINVAL;
1166 }
1167 resource++;
1168 i++;
1169 }
1170 return 0;
1171 }
kernel source for telekom puls (alcatel/mediatek)