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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 <linux/slab.h>
28 #include "../base.h"
29 #include "pnpacpi.h"
30
31 #ifdef CONFIG_IA64
32 #define valid_IRQ(i) (1)
33 #else
34 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
35 #endif
36
37 /*
38  * Allocated Resources
39  */
40 static int irq_flags(int triggering, int polarity, int shareable)
41 {
42         int flags;
43
44         if (triggering == ACPI_LEVEL_SENSITIVE) {
45                 if (polarity == ACPI_ACTIVE_LOW)
46                         flags = IORESOURCE_IRQ_LOWLEVEL;
47                 else
48                         flags = IORESOURCE_IRQ_HIGHLEVEL;
49         } else {
50                 if (polarity == ACPI_ACTIVE_LOW)
51                         flags = IORESOURCE_IRQ_LOWEDGE;
52                 else
53                         flags = IORESOURCE_IRQ_HIGHEDGE;
54         }
55
56         if (shareable == ACPI_SHARED)
57                 flags |= IORESOURCE_IRQ_SHAREABLE;
58
59         return flags;
60 }
61
62 static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
63                              int *polarity, int *shareable)
64 {
65         switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
66                          IORESOURCE_IRQ_LOWEDGE  | IORESOURCE_IRQ_HIGHEDGE)) {
67         case IORESOURCE_IRQ_LOWLEVEL:
68                 *triggering = ACPI_LEVEL_SENSITIVE;
69                 *polarity = ACPI_ACTIVE_LOW;
70                 break;
71         case IORESOURCE_IRQ_HIGHLEVEL:
72                 *triggering = ACPI_LEVEL_SENSITIVE;
73                 *polarity = ACPI_ACTIVE_HIGH;
74                 break;
75         case IORESOURCE_IRQ_LOWEDGE:
76                 *triggering = ACPI_EDGE_SENSITIVE;
77                 *polarity = ACPI_ACTIVE_LOW;
78                 break;
79         case IORESOURCE_IRQ_HIGHEDGE:
80                 *triggering = ACPI_EDGE_SENSITIVE;
81                 *polarity = ACPI_ACTIVE_HIGH;
82                 break;
83         default:
84                 dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
85                         flags);
86                 *triggering = ACPI_EDGE_SENSITIVE;
87                 *polarity = ACPI_ACTIVE_HIGH;
88                 break;
89         }
90
91         if (flags & IORESOURCE_IRQ_SHAREABLE)
92                 *shareable = ACPI_SHARED;
93         else
94                 *shareable = ACPI_EXCLUSIVE;
95 }
96
97 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
98                                                 u32 gsi, int triggering,
99                                                 int polarity, int shareable)
100 {
101         int irq, flags;
102         int p, t;
103
104         if (!valid_IRQ(gsi)) {
105                 pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
106                 return;
107         }
108
109         /*
110          * in IO-APIC mode, use overrided attribute. Two reasons:
111          * 1. BIOS bug in DSDT
112          * 2. BIOS uses IO-APIC mode Interrupt Source Override
113          */
114         if (!acpi_get_override_irq(gsi, &t, &p)) {
115                 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
116                 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
117
118                 if (triggering != t || polarity != p) {
119                         dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
120                                 gsi, t ? "edge":"level", p ? "low":"high");
121                         triggering = t;
122                         polarity = p;
123                 }
124         }
125
126         flags = irq_flags(triggering, polarity, shareable);
127         irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
128         if (irq >= 0)
129                 pcibios_penalize_isa_irq(irq, 1);
130         else
131                 flags |= IORESOURCE_DISABLED;
132
133         pnp_add_irq_resource(dev, irq, flags);
134 }
135
136 static int dma_flags(struct pnp_dev *dev, int type, int bus_master,
137                      int transfer)
138 {
139         int flags = 0;
140
141         if (bus_master)
142                 flags |= IORESOURCE_DMA_MASTER;
143         switch (type) {
144         case ACPI_COMPATIBILITY:
145                 flags |= IORESOURCE_DMA_COMPATIBLE;
146                 break;
147         case ACPI_TYPE_A:
148                 flags |= IORESOURCE_DMA_TYPEA;
149                 break;
150         case ACPI_TYPE_B:
151                 flags |= IORESOURCE_DMA_TYPEB;
152                 break;
153         case ACPI_TYPE_F:
154                 flags |= IORESOURCE_DMA_TYPEF;
155                 break;
156         default:
157                 /* Set a default value ? */
158                 flags |= IORESOURCE_DMA_COMPATIBLE;
159                 dev_err(&dev->dev, "invalid DMA type %d\n", type);
160         }
161         switch (transfer) {
162         case ACPI_TRANSFER_8:
163                 flags |= IORESOURCE_DMA_8BIT;
164                 break;
165         case ACPI_TRANSFER_8_16:
166                 flags |= IORESOURCE_DMA_8AND16BIT;
167                 break;
168         case ACPI_TRANSFER_16:
169                 flags |= IORESOURCE_DMA_16BIT;
170                 break;
171         default:
172                 /* Set a default value ? */
173                 flags |= IORESOURCE_DMA_8AND16BIT;
174                 dev_err(&dev->dev, "invalid DMA transfer type %d\n", transfer);
175         }
176
177         return flags;
178 }
179
180 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
181                                                u64 len, int io_decode,
182                                                int window)
183 {
184         int flags = 0;
185         u64 end = start + len - 1;
186
187         if (io_decode == ACPI_DECODE_16)
188                 flags |= IORESOURCE_IO_16BIT_ADDR;
189         if (len == 0 || end >= 0x10003)
190                 flags |= IORESOURCE_DISABLED;
191         if (window)
192                 flags |= IORESOURCE_WINDOW;
193
194         pnp_add_io_resource(dev, start, end, flags);
195 }
196
197 /*
198  * Device CSRs that do not appear in PCI config space should be described
199  * via ACPI.  This would normally be done with Address Space Descriptors
200  * marked as "consumer-only," but old versions of Windows and Linux ignore
201  * the producer/consumer flag, so HP invented a vendor-defined resource to
202  * describe the location and size of CSR space.
203  */
204 static struct acpi_vendor_uuid hp_ccsr_uuid = {
205         .subtype = 2,
206         .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
207             0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
208 };
209
210 static int vendor_resource_matches(struct pnp_dev *dev,
211                                    struct acpi_resource_vendor_typed *vendor,
212                                    struct acpi_vendor_uuid *match,
213                                    int expected_len)
214 {
215         int uuid_len = sizeof(vendor->uuid);
216         u8 uuid_subtype = vendor->uuid_subtype;
217         u8 *uuid = vendor->uuid;
218         int actual_len;
219
220         /* byte_length includes uuid_subtype and uuid */
221         actual_len = vendor->byte_length - uuid_len - 1;
222
223         if (uuid_subtype == match->subtype &&
224             uuid_len == sizeof(match->data) &&
225             memcmp(uuid, match->data, uuid_len) == 0) {
226                 if (expected_len && expected_len != actual_len) {
227                         dev_err(&dev->dev, "wrong vendor descriptor size; "
228                                 "expected %d, found %d bytes\n",
229                                 expected_len, actual_len);
230                         return 0;
231                 }
232
233                 return 1;
234         }
235
236         return 0;
237 }
238
239 static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev,
240                                     struct acpi_resource_vendor_typed *vendor)
241 {
242         if (vendor_resource_matches(dev, vendor, &hp_ccsr_uuid, 16)) {
243                 u64 start, length;
244
245                 memcpy(&start, vendor->byte_data, sizeof(start));
246                 memcpy(&length, vendor->byte_data + 8, sizeof(length));
247
248                 pnp_add_mem_resource(dev, start, start + length - 1, 0);
249         }
250 }
251
252 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
253                                                 u64 start, u64 len,
254                                                 int write_protect, int window)
255 {
256         int flags = 0;
257         u64 end = start + len - 1;
258
259         if (len == 0)
260                 flags |= IORESOURCE_DISABLED;
261         if (write_protect == ACPI_READ_WRITE_MEMORY)
262                 flags |= IORESOURCE_MEM_WRITEABLE;
263         if (window)
264                 flags |= IORESOURCE_WINDOW;
265
266         pnp_add_mem_resource(dev, start, end, flags);
267 }
268
269 static void pnpacpi_parse_allocated_busresource(struct pnp_dev *dev,
270                                                 u64 start, u64 len)
271 {
272         u64 end = start + len - 1;
273
274         pnp_add_bus_resource(dev, start, end);
275 }
276
277 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
278                                                   struct acpi_resource *res)
279 {
280         struct acpi_resource_address64 addr, *p = &addr;
281         acpi_status status;
282         int window;
283         u64 len;
284
285         status = acpi_resource_to_address64(res, p);
286         if (!ACPI_SUCCESS(status)) {
287                 dev_warn(&dev->dev, "failed to convert resource type %d\n",
288                          res->type);
289                 return;
290         }
291
292         /* Windows apparently computes length rather than using _LEN */
293         len = p->maximum - p->minimum + 1;
294         window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;
295
296         if (p->resource_type == ACPI_MEMORY_RANGE)
297                 pnpacpi_parse_allocated_memresource(dev, p->minimum, len,
298                         p->info.mem.write_protect, window);
299         else if (p->resource_type == ACPI_IO_RANGE)
300                 pnpacpi_parse_allocated_ioresource(dev, p->minimum, len,
301                         p->granularity == 0xfff ? ACPI_DECODE_10 :
302                                 ACPI_DECODE_16, window);
303         else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
304                 pnpacpi_parse_allocated_busresource(dev, p->minimum, len);
305 }
306
307 static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
308                                                       struct acpi_resource *res)
309 {
310         struct acpi_resource_extended_address64 *p = &res->data.ext_address64;
311         int window;
312         u64 len;
313
314         /* Windows apparently computes length rather than using _LEN */
315         len = p->maximum - p->minimum + 1;
316         window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;
317
318         if (p->resource_type == ACPI_MEMORY_RANGE)
319                 pnpacpi_parse_allocated_memresource(dev, p->minimum, len,
320                         p->info.mem.write_protect, window);
321         else if (p->resource_type == ACPI_IO_RANGE)
322                 pnpacpi_parse_allocated_ioresource(dev, p->minimum, len,
323                         p->granularity == 0xfff ? ACPI_DECODE_10 :
324                                 ACPI_DECODE_16, window);
325         else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
326                 pnpacpi_parse_allocated_busresource(dev, p->minimum, len);
327 }
328
329 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
330                                               void *data)
331 {
332         struct pnp_dev *dev = data;
333         struct acpi_resource_irq *irq;
334         struct acpi_resource_dma *dma;
335         struct acpi_resource_io *io;
336         struct acpi_resource_fixed_io *fixed_io;
337         struct acpi_resource_vendor_typed *vendor_typed;
338         struct acpi_resource_memory24 *memory24;
339         struct acpi_resource_memory32 *memory32;
340         struct acpi_resource_fixed_memory32 *fixed_memory32;
341         struct acpi_resource_extended_irq *extended_irq;
342         int i, flags;
343
344         switch (res->type) {
345         case ACPI_RESOURCE_TYPE_IRQ:
346                 /*
347                  * Per spec, only one interrupt per descriptor is allowed in
348                  * _CRS, but some firmware violates this, so parse them all.
349                  */
350                 irq = &res->data.irq;
351                 if (irq->interrupt_count == 0)
352                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
353                 else {
354                         for (i = 0; i < irq->interrupt_count; i++) {
355                                 pnpacpi_parse_allocated_irqresource(dev,
356                                         irq->interrupts[i],
357                                         irq->triggering,
358                                         irq->polarity,
359                                     irq->sharable);
360                         }
361
362                         /*
363                          * The IRQ encoder puts a single interrupt in each
364                          * descriptor, so if a _CRS descriptor has more than
365                          * one interrupt, we won't be able to re-encode it.
366                          */
367                         if (pnp_can_write(dev) && irq->interrupt_count > 1) {
368                                 dev_warn(&dev->dev, "multiple interrupts in "
369                                          "_CRS descriptor; configuration can't "
370                                          "be changed\n");
371                                 dev->capabilities &= ~PNP_WRITE;
372                         }
373                 }
374                 break;
375
376         case ACPI_RESOURCE_TYPE_DMA:
377                 dma = &res->data.dma;
378                 if (dma->channel_count > 0 && dma->channels[0] != (u8) -1)
379                         flags = dma_flags(dev, dma->type, dma->bus_master,
380                                           dma->transfer);
381                 else
382                         flags = IORESOURCE_DISABLED;
383                 pnp_add_dma_resource(dev, dma->channels[0], flags);
384                 break;
385
386         case ACPI_RESOURCE_TYPE_IO:
387                 io = &res->data.io;
388                 pnpacpi_parse_allocated_ioresource(dev,
389                         io->minimum,
390                         io->address_length,
391                         io->io_decode, 0);
392                 break;
393
394         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
395         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
396                 break;
397
398         case ACPI_RESOURCE_TYPE_FIXED_IO:
399                 fixed_io = &res->data.fixed_io;
400                 pnpacpi_parse_allocated_ioresource(dev,
401                         fixed_io->address,
402                         fixed_io->address_length,
403                         ACPI_DECODE_10, 0);
404                 break;
405
406         case ACPI_RESOURCE_TYPE_VENDOR:
407                 vendor_typed = &res->data.vendor_typed;
408                 pnpacpi_parse_allocated_vendor(dev, vendor_typed);
409                 break;
410
411         case ACPI_RESOURCE_TYPE_END_TAG:
412                 break;
413
414         case ACPI_RESOURCE_TYPE_MEMORY24:
415                 memory24 = &res->data.memory24;
416                 pnpacpi_parse_allocated_memresource(dev,
417                         memory24->minimum,
418                         memory24->address_length,
419                         memory24->write_protect, 0);
420                 break;
421         case ACPI_RESOURCE_TYPE_MEMORY32:
422                 memory32 = &res->data.memory32;
423                 pnpacpi_parse_allocated_memresource(dev,
424                         memory32->minimum,
425                         memory32->address_length,
426                         memory32->write_protect, 0);
427                 break;
428         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
429                 fixed_memory32 = &res->data.fixed_memory32;
430                 pnpacpi_parse_allocated_memresource(dev,
431                         fixed_memory32->address,
432                         fixed_memory32->address_length,
433                         fixed_memory32->write_protect, 0);
434                 break;
435         case ACPI_RESOURCE_TYPE_ADDRESS16:
436         case ACPI_RESOURCE_TYPE_ADDRESS32:
437         case ACPI_RESOURCE_TYPE_ADDRESS64:
438                 pnpacpi_parse_allocated_address_space(dev, res);
439                 break;
440
441         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
442                 pnpacpi_parse_allocated_ext_address_space(dev, res);
443                 break;
444
445         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
446                 extended_irq = &res->data.extended_irq;
447
448                 if (extended_irq->interrupt_count == 0)
449                         pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
450                 else {
451                         for (i = 0; i < extended_irq->interrupt_count; i++) {
452                                 pnpacpi_parse_allocated_irqresource(dev,
453                                         extended_irq->interrupts[i],
454                                         extended_irq->triggering,
455                                         extended_irq->polarity,
456                                         extended_irq->sharable);
457                         }
458
459                         /*
460                          * The IRQ encoder puts a single interrupt in each
461                          * descriptor, so if a _CRS descriptor has more than
462                          * one interrupt, we won't be able to re-encode it.
463                          */
464                         if (pnp_can_write(dev) &&
465                             extended_irq->interrupt_count > 1) {
466                                 dev_warn(&dev->dev, "multiple interrupts in "
467                                          "_CRS descriptor; configuration can't "
468                                          "be changed\n");
469                                 dev->capabilities &= ~PNP_WRITE;
470                         }
471                 }
472                 break;
473
474         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
475                 break;
476
477         default:
478                 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
479                          res->type);
480                 return AE_ERROR;
481         }
482
483         return AE_OK;
484 }
485
486 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
487 {
488         struct acpi_device *acpi_dev = dev->data;
489         acpi_handle handle = acpi_dev->handle;
490         acpi_status status;
491
492         pnp_dbg(&dev->dev, "parse allocated resources\n");
493
494         pnp_init_resources(dev);
495
496         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
497                                      pnpacpi_allocated_resource, dev);
498
499         if (ACPI_FAILURE(status)) {
500                 if (status != AE_NOT_FOUND)
501                         dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
502                 return -EPERM;
503         }
504         return 0;
505 }
506
507 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
508                                             unsigned int option_flags,
509                                             struct acpi_resource_dma *p)
510 {
511         int i;
512         unsigned char map = 0, flags;
513
514         if (p->channel_count == 0)
515                 return;
516
517         for (i = 0; i < p->channel_count; i++)
518                 map |= 1 << p->channels[i];
519
520         flags = dma_flags(dev, p->type, p->bus_master, p->transfer);
521         pnp_register_dma_resource(dev, option_flags, map, flags);
522 }
523
524 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
525                                             unsigned int option_flags,
526                                             struct acpi_resource_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                         __set_bit(p->interrupts[i], map.bits);
539
540         flags = irq_flags(p->triggering, p->polarity, p->sharable);
541         pnp_register_irq_resource(dev, option_flags, &map, flags);
542 }
543
544 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
545                                         unsigned int option_flags,
546                                         struct acpi_resource_extended_irq *p)
547 {
548         int i;
549         pnp_irq_mask_t map;
550         unsigned char flags;
551
552         if (p->interrupt_count == 0)
553                 return;
554
555         bitmap_zero(map.bits, PNP_IRQ_NR);
556         for (i = 0; i < p->interrupt_count; i++) {
557                 if (p->interrupts[i]) {
558                         if (p->interrupts[i] < PNP_IRQ_NR)
559                                 __set_bit(p->interrupts[i], map.bits);
560                         else
561                                 dev_err(&dev->dev, "ignoring IRQ %d option "
562                                         "(too large for %d entry bitmap)\n",
563                                         p->interrupts[i], PNP_IRQ_NR);
564                 }
565         }
566
567         flags = irq_flags(p->triggering, p->polarity, p->sharable);
568         pnp_register_irq_resource(dev, option_flags, &map, flags);
569 }
570
571 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
572                                              unsigned int option_flags,
573                                              struct acpi_resource_io *io)
574 {
575         unsigned char flags = 0;
576
577         if (io->address_length == 0)
578                 return;
579
580         if (io->io_decode == ACPI_DECODE_16)
581                 flags = IORESOURCE_IO_16BIT_ADDR;
582         pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum,
583                                    io->alignment, io->address_length, flags);
584 }
585
586 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
587                                         unsigned int option_flags,
588                                         struct acpi_resource_fixed_io *io)
589 {
590         if (io->address_length == 0)
591                 return;
592
593         pnp_register_port_resource(dev, option_flags, io->address, io->address,
594                                    0, io->address_length, IORESOURCE_IO_FIXED);
595 }
596
597 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
598                                               unsigned int option_flags,
599                                               struct acpi_resource_memory24 *p)
600 {
601         unsigned char flags = 0;
602
603         if (p->address_length == 0)
604                 return;
605
606         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
607                 flags = IORESOURCE_MEM_WRITEABLE;
608         pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
609                                   p->alignment, p->address_length, flags);
610 }
611
612 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
613                                               unsigned int option_flags,
614                                               struct acpi_resource_memory32 *p)
615 {
616         unsigned char flags = 0;
617
618         if (p->address_length == 0)
619                 return;
620
621         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
622                 flags = IORESOURCE_MEM_WRITEABLE;
623         pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
624                                   p->alignment, p->address_length, flags);
625 }
626
627 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
628                                         unsigned int option_flags,
629                                         struct acpi_resource_fixed_memory32 *p)
630 {
631         unsigned char flags = 0;
632
633         if (p->address_length == 0)
634                 return;
635
636         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
637                 flags = IORESOURCE_MEM_WRITEABLE;
638         pnp_register_mem_resource(dev, option_flags, p->address, p->address,
639                                   0, p->address_length, flags);
640 }
641
642 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
643                                                 unsigned int option_flags,
644                                                 struct acpi_resource *r)
645 {
646         struct acpi_resource_address64 addr, *p = &addr;
647         acpi_status status;
648         unsigned char flags = 0;
649
650         status = acpi_resource_to_address64(r, p);
651         if (ACPI_FAILURE(status)) {
652                 dev_warn(&dev->dev, "can't convert resource type %d\n",
653                          r->type);
654                 return;
655         }
656
657         if (p->address_length == 0)
658                 return;
659
660         if (p->resource_type == ACPI_MEMORY_RANGE) {
661                 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
662                         flags = IORESOURCE_MEM_WRITEABLE;
663                 pnp_register_mem_resource(dev, option_flags, p->minimum,
664                                           p->minimum, 0, p->address_length,
665                                           flags);
666         } else if (p->resource_type == ACPI_IO_RANGE)
667                 pnp_register_port_resource(dev, option_flags, p->minimum,
668                                            p->minimum, 0, p->address_length,
669                                            IORESOURCE_IO_FIXED);
670 }
671
672 static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
673                                                     unsigned int option_flags,
674                                                     struct acpi_resource *r)
675 {
676         struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
677         unsigned char flags = 0;
678
679         if (p->address_length == 0)
680                 return;
681
682         if (p->resource_type == ACPI_MEMORY_RANGE) {
683                 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
684                         flags = IORESOURCE_MEM_WRITEABLE;
685                 pnp_register_mem_resource(dev, option_flags, p->minimum,
686                                           p->minimum, 0, p->address_length,
687                                           flags);
688         } else if (p->resource_type == ACPI_IO_RANGE)
689                 pnp_register_port_resource(dev, option_flags, p->minimum,
690                                            p->minimum, 0, p->address_length,
691                                            IORESOURCE_IO_FIXED);
692 }
693
694 struct acpipnp_parse_option_s {
695         struct pnp_dev *dev;
696         unsigned int option_flags;
697 };
698
699 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
700                                                   void *data)
701 {
702         int priority;
703         struct acpipnp_parse_option_s *parse_data = data;
704         struct pnp_dev *dev = parse_data->dev;
705         unsigned int option_flags = parse_data->option_flags;
706
707         switch (res->type) {
708         case ACPI_RESOURCE_TYPE_IRQ:
709                 pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
710                 break;
711
712         case ACPI_RESOURCE_TYPE_DMA:
713                 pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
714                 break;
715
716         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
717                 switch (res->data.start_dpf.compatibility_priority) {
718                 case ACPI_GOOD_CONFIGURATION:
719                         priority = PNP_RES_PRIORITY_PREFERRED;
720                         break;
721
722                 case ACPI_ACCEPTABLE_CONFIGURATION:
723                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
724                         break;
725
726                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
727                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
728                         break;
729                 default:
730                         priority = PNP_RES_PRIORITY_INVALID;
731                         break;
732                 }
733                 parse_data->option_flags = pnp_new_dependent_set(dev, priority);
734                 break;
735
736         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
737                 parse_data->option_flags = 0;
738                 break;
739
740         case ACPI_RESOURCE_TYPE_IO:
741                 pnpacpi_parse_port_option(dev, option_flags, &res->data.io);
742                 break;
743
744         case ACPI_RESOURCE_TYPE_FIXED_IO:
745                 pnpacpi_parse_fixed_port_option(dev, option_flags,
746                                                 &res->data.fixed_io);
747                 break;
748
749         case ACPI_RESOURCE_TYPE_VENDOR:
750         case ACPI_RESOURCE_TYPE_END_TAG:
751                 break;
752
753         case ACPI_RESOURCE_TYPE_MEMORY24:
754                 pnpacpi_parse_mem24_option(dev, option_flags,
755                                            &res->data.memory24);
756                 break;
757
758         case ACPI_RESOURCE_TYPE_MEMORY32:
759                 pnpacpi_parse_mem32_option(dev, option_flags,
760                                            &res->data.memory32);
761                 break;
762
763         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
764                 pnpacpi_parse_fixed_mem32_option(dev, option_flags,
765                                                  &res->data.fixed_memory32);
766                 break;
767
768         case ACPI_RESOURCE_TYPE_ADDRESS16:
769         case ACPI_RESOURCE_TYPE_ADDRESS32:
770         case ACPI_RESOURCE_TYPE_ADDRESS64:
771                 pnpacpi_parse_address_option(dev, option_flags, res);
772                 break;
773
774         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
775                 pnpacpi_parse_ext_address_option(dev, option_flags, res);
776                 break;
777
778         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
779                 pnpacpi_parse_ext_irq_option(dev, option_flags,
780                                              &res->data.extended_irq);
781                 break;
782
783         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
784                 break;
785
786         default:
787                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
788                          res->type);
789                 return AE_ERROR;
790         }
791
792         return AE_OK;
793 }
794
795 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
796 {
797         struct acpi_device *acpi_dev = dev->data;
798         acpi_handle handle = acpi_dev->handle;
799         acpi_status status;
800         struct acpipnp_parse_option_s parse_data;
801
802         pnp_dbg(&dev->dev, "parse resource options\n");
803
804         parse_data.dev = dev;
805         parse_data.option_flags = 0;
806
807         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
808                                      pnpacpi_option_resource, &parse_data);
809
810         if (ACPI_FAILURE(status)) {
811                 if (status != AE_NOT_FOUND)
812                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
813                 return -EPERM;
814         }
815         return 0;
816 }
817
818 static int pnpacpi_supported_resource(struct acpi_resource *res)
819 {
820         switch (res->type) {
821         case ACPI_RESOURCE_TYPE_IRQ:
822         case ACPI_RESOURCE_TYPE_DMA:
823         case ACPI_RESOURCE_TYPE_IO:
824         case ACPI_RESOURCE_TYPE_FIXED_IO:
825         case ACPI_RESOURCE_TYPE_MEMORY24:
826         case ACPI_RESOURCE_TYPE_MEMORY32:
827         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
828         case ACPI_RESOURCE_TYPE_ADDRESS16:
829         case ACPI_RESOURCE_TYPE_ADDRESS32:
830         case ACPI_RESOURCE_TYPE_ADDRESS64:
831         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
832         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
833                 return 1;
834         }
835         return 0;
836 }
837
838 /*
839  * Set resource
840  */
841 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
842                                            void *data)
843 {
844         int *res_cnt = data;
845
846         if (pnpacpi_supported_resource(res))
847                 (*res_cnt)++;
848         return AE_OK;
849 }
850
851 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
852 {
853         struct acpi_resource **resource = data;
854
855         if (pnpacpi_supported_resource(res)) {
856                 (*resource)->type = res->type;
857                 (*resource)->length = sizeof(struct acpi_resource);
858                 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
859                         (*resource)->data.irq.descriptor_length =
860                                         res->data.irq.descriptor_length;
861                 (*resource)++;
862         }
863
864         return AE_OK;
865 }
866
867 int pnpacpi_build_resource_template(struct pnp_dev *dev,
868                                     struct acpi_buffer *buffer)
869 {
870         struct acpi_device *acpi_dev = dev->data;
871         acpi_handle handle = acpi_dev->handle;
872         struct acpi_resource *resource;
873         int res_cnt = 0;
874         acpi_status status;
875
876         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
877                                      pnpacpi_count_resources, &res_cnt);
878         if (ACPI_FAILURE(status)) {
879                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
880                 return -EINVAL;
881         }
882         if (!res_cnt)
883                 return -EINVAL;
884         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
885         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
886         if (!buffer->pointer)
887                 return -ENOMEM;
888
889         resource = (struct acpi_resource *)buffer->pointer;
890         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
891                                      pnpacpi_type_resources, &resource);
892         if (ACPI_FAILURE(status)) {
893                 kfree(buffer->pointer);
894                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
895                 return -EINVAL;
896         }
897         /* resource will pointer the end resource now */
898         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
899
900         return 0;
901 }
902
903 static void pnpacpi_encode_irq(struct pnp_dev *dev,
904                                struct acpi_resource *resource,
905                                struct resource *p)
906 {
907         struct acpi_resource_irq *irq = &resource->data.irq;
908         int triggering, polarity, shareable;
909
910         if (!pnp_resource_enabled(p)) {
911                 irq->interrupt_count = 0;
912                 pnp_dbg(&dev->dev, "  encode irq (%s)\n",
913                         p ? "disabled" : "missing");
914                 return;
915         }
916
917         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
918         irq->triggering = triggering;
919         irq->polarity = polarity;
920         irq->sharable = shareable;
921         irq->interrupt_count = 1;
922         irq->interrupts[0] = p->start;
923
924         pnp_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
925                 (int) p->start,
926                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
927                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
928                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
929                 irq->descriptor_length);
930 }
931
932 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
933                                    struct acpi_resource *resource,
934                                    struct resource *p)
935 {
936         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
937         int triggering, polarity, shareable;
938
939         if (!pnp_resource_enabled(p)) {
940                 extended_irq->interrupt_count = 0;
941                 pnp_dbg(&dev->dev, "  encode extended irq (%s)\n",
942                         p ? "disabled" : "missing");
943                 return;
944         }
945
946         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
947         extended_irq->producer_consumer = ACPI_CONSUMER;
948         extended_irq->triggering = triggering;
949         extended_irq->polarity = polarity;
950         extended_irq->sharable = shareable;
951         extended_irq->interrupt_count = 1;
952         extended_irq->interrupts[0] = p->start;
953
954         pnp_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
955                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
956                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
957                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
958 }
959
960 static void pnpacpi_encode_dma(struct pnp_dev *dev,
961                                struct acpi_resource *resource,
962                                struct resource *p)
963 {
964         struct acpi_resource_dma *dma = &resource->data.dma;
965
966         if (!pnp_resource_enabled(p)) {
967                 dma->channel_count = 0;
968                 pnp_dbg(&dev->dev, "  encode dma (%s)\n",
969                         p ? "disabled" : "missing");
970                 return;
971         }
972
973         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
974         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
975         case IORESOURCE_DMA_TYPEA:
976                 dma->type = ACPI_TYPE_A;
977                 break;
978         case IORESOURCE_DMA_TYPEB:
979                 dma->type = ACPI_TYPE_B;
980                 break;
981         case IORESOURCE_DMA_TYPEF:
982                 dma->type = ACPI_TYPE_F;
983                 break;
984         default:
985                 dma->type = ACPI_COMPATIBILITY;
986         }
987
988         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
989         case IORESOURCE_DMA_8BIT:
990                 dma->transfer = ACPI_TRANSFER_8;
991                 break;
992         case IORESOURCE_DMA_8AND16BIT:
993                 dma->transfer = ACPI_TRANSFER_8_16;
994                 break;
995         default:
996                 dma->transfer = ACPI_TRANSFER_16;
997         }
998
999         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
1000         dma->channel_count = 1;
1001         dma->channels[0] = p->start;
1002
1003         pnp_dbg(&dev->dev, "  encode dma %d "
1004                 "type %#x transfer %#x master %d\n",
1005                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
1006 }
1007
1008 static void pnpacpi_encode_io(struct pnp_dev *dev,
1009                               struct acpi_resource *resource,
1010                               struct resource *p)
1011 {
1012         struct acpi_resource_io *io = &resource->data.io;
1013
1014         if (pnp_resource_enabled(p)) {
1015                 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
1016                 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
1017                     ACPI_DECODE_16 : ACPI_DECODE_10;
1018                 io->minimum = p->start;
1019                 io->maximum = p->end;
1020                 io->alignment = 0;      /* Correct? */
1021                 io->address_length = p->end - p->start + 1;
1022         } else {
1023                 io->minimum = 0;
1024                 io->address_length = 0;
1025         }
1026
1027         pnp_dbg(&dev->dev, "  encode io %#x-%#x decode %#x\n", io->minimum,
1028                 io->minimum + io->address_length - 1, io->io_decode);
1029 }
1030
1031 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
1032                                     struct acpi_resource *resource,
1033                                     struct resource *p)
1034 {
1035         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
1036
1037         if (pnp_resource_enabled(p)) {
1038                 fixed_io->address = p->start;
1039                 fixed_io->address_length = p->end - p->start + 1;
1040         } else {
1041                 fixed_io->address = 0;
1042                 fixed_io->address_length = 0;
1043         }
1044
1045         pnp_dbg(&dev->dev, "  encode fixed_io %#x-%#x\n", fixed_io->address,
1046                 fixed_io->address + fixed_io->address_length - 1);
1047 }
1048
1049 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
1050                                  struct acpi_resource *resource,
1051                                  struct resource *p)
1052 {
1053         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
1054
1055         if (pnp_resource_enabled(p)) {
1056                 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
1057                 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1058                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1059                 memory24->minimum = p->start;
1060                 memory24->maximum = p->end;
1061                 memory24->alignment = 0;
1062                 memory24->address_length = p->end - p->start + 1;
1063         } else {
1064                 memory24->minimum = 0;
1065                 memory24->address_length = 0;
1066         }
1067
1068         pnp_dbg(&dev->dev, "  encode mem24 %#x-%#x write_protect %#x\n",
1069                 memory24->minimum,
1070                 memory24->minimum + memory24->address_length - 1,
1071                 memory24->write_protect);
1072 }
1073
1074 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1075                                  struct acpi_resource *resource,
1076                                  struct resource *p)
1077 {
1078         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1079
1080         if (pnp_resource_enabled(p)) {
1081                 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1082                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1083                 memory32->minimum = p->start;
1084                 memory32->maximum = p->end;
1085                 memory32->alignment = 0;
1086                 memory32->address_length = p->end - p->start + 1;
1087         } else {
1088                 memory32->minimum = 0;
1089                 memory32->alignment = 0;
1090         }
1091
1092         pnp_dbg(&dev->dev, "  encode mem32 %#x-%#x write_protect %#x\n",
1093                 memory32->minimum,
1094                 memory32->minimum + memory32->address_length - 1,
1095                 memory32->write_protect);
1096 }
1097
1098 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1099                                        struct acpi_resource *resource,
1100                                        struct resource *p)
1101 {
1102         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1103
1104         if (pnp_resource_enabled(p)) {
1105                 fixed_memory32->write_protect =
1106                     p->flags & IORESOURCE_MEM_WRITEABLE ?
1107                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1108                 fixed_memory32->address = p->start;
1109                 fixed_memory32->address_length = p->end - p->start + 1;
1110         } else {
1111                 fixed_memory32->address = 0;
1112                 fixed_memory32->address_length = 0;
1113         }
1114
1115         pnp_dbg(&dev->dev, "  encode fixed_mem32 %#x-%#x write_protect %#x\n",
1116                 fixed_memory32->address,
1117                 fixed_memory32->address + fixed_memory32->address_length - 1,
1118                 fixed_memory32->write_protect);
1119 }
1120
1121 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1122 {
1123         int i = 0;
1124         /* pnpacpi_build_resource_template allocates extra mem */
1125         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1126         struct acpi_resource *resource = buffer->pointer;
1127         int port = 0, irq = 0, dma = 0, mem = 0;
1128
1129         pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1130         while (i < res_cnt) {
1131                 switch (resource->type) {
1132                 case ACPI_RESOURCE_TYPE_IRQ:
1133                         pnpacpi_encode_irq(dev, resource,
1134                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1135                         irq++;
1136                         break;
1137
1138                 case ACPI_RESOURCE_TYPE_DMA:
1139                         pnpacpi_encode_dma(dev, resource,
1140                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1141                         dma++;
1142                         break;
1143                 case ACPI_RESOURCE_TYPE_IO:
1144                         pnpacpi_encode_io(dev, resource,
1145                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1146                         port++;
1147                         break;
1148                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1149                         pnpacpi_encode_fixed_io(dev, resource,
1150                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1151                         port++;
1152                         break;
1153                 case ACPI_RESOURCE_TYPE_MEMORY24:
1154                         pnpacpi_encode_mem24(dev, resource,
1155                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1156                         mem++;
1157                         break;
1158                 case ACPI_RESOURCE_TYPE_MEMORY32:
1159                         pnpacpi_encode_mem32(dev, resource,
1160                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1161                         mem++;
1162                         break;
1163                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1164                         pnpacpi_encode_fixed_mem32(dev, resource,
1165                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1166                         mem++;
1167                         break;
1168                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1169                         pnpacpi_encode_ext_irq(dev, resource,
1170                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1171                         irq++;
1172                         break;
1173                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1174                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1175                 case ACPI_RESOURCE_TYPE_VENDOR:
1176                 case ACPI_RESOURCE_TYPE_END_TAG:
1177                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1178                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1179                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1180                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1181                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1182                 default:        /* other type */
1183                         dev_warn(&dev->dev, "can't encode unknown resource "
1184                                  "type %d\n", resource->type);
1185                         return -EINVAL;
1186                 }
1187                 resource++;
1188                 i++;
1189         }
1190         return 0;
1191 }