Merge 'akpm' patch series
[linux-3.10.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 <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 = 0;
513
514         if (p->channel_count == 0)
515                 flags |= IORESOURCE_DISABLED;
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 = 0;
531
532         if (p->interrupt_count == 0)
533                 flags |= IORESOURCE_DISABLED;
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 = 0;
551
552         if (p->interrupt_count == 0)
553                 flags |= IORESOURCE_DISABLED;
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                 flags |= IORESOURCE_DISABLED;
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         unsigned char flags = 0;
591
592         if (io->address_length == 0)
593                 flags |= IORESOURCE_DISABLED;
594
595         pnp_register_port_resource(dev, option_flags, io->address, io->address,
596                                    0, io->address_length, flags | IORESOURCE_IO_FIXED);
597 }
598
599 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
600                                               unsigned int option_flags,
601                                               struct acpi_resource_memory24 *p)
602 {
603         unsigned char flags = 0;
604
605         if (p->address_length == 0)
606                 flags |= IORESOURCE_DISABLED;
607
608         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
609                 flags |= IORESOURCE_MEM_WRITEABLE;
610         pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
611                                   p->alignment, p->address_length, flags);
612 }
613
614 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
615                                               unsigned int option_flags,
616                                               struct acpi_resource_memory32 *p)
617 {
618         unsigned char flags = 0;
619
620         if (p->address_length == 0)
621                 flags |= IORESOURCE_DISABLED;
622
623         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
624                 flags |= IORESOURCE_MEM_WRITEABLE;
625         pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
626                                   p->alignment, p->address_length, flags);
627 }
628
629 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
630                                         unsigned int option_flags,
631                                         struct acpi_resource_fixed_memory32 *p)
632 {
633         unsigned char flags = 0;
634
635         if (p->address_length == 0)
636                 flags |= IORESOURCE_DISABLED;
637
638         if (p->write_protect == ACPI_READ_WRITE_MEMORY)
639                 flags |= IORESOURCE_MEM_WRITEABLE;
640         pnp_register_mem_resource(dev, option_flags, p->address, p->address,
641                                   0, p->address_length, flags);
642 }
643
644 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
645                                                 unsigned int option_flags,
646                                                 struct acpi_resource *r)
647 {
648         struct acpi_resource_address64 addr, *p = &addr;
649         acpi_status status;
650         unsigned char flags = 0;
651
652         status = acpi_resource_to_address64(r, p);
653         if (ACPI_FAILURE(status)) {
654                 dev_warn(&dev->dev, "can't convert resource type %d\n",
655                          r->type);
656                 return;
657         }
658
659         if (p->address_length == 0)
660                 flags |= IORESOURCE_DISABLED;
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                                            flags | IORESOURCE_IO_FIXED);
672 }
673
674 static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
675                                                     unsigned int option_flags,
676                                                     struct acpi_resource *r)
677 {
678         struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
679         unsigned char flags = 0;
680
681         if (p->address_length == 0)
682                 flags |= IORESOURCE_DISABLED;
683
684         if (p->resource_type == ACPI_MEMORY_RANGE) {
685                 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
686                         flags |= IORESOURCE_MEM_WRITEABLE;
687                 pnp_register_mem_resource(dev, option_flags, p->minimum,
688                                           p->minimum, 0, p->address_length,
689                                           flags);
690         } else if (p->resource_type == ACPI_IO_RANGE)
691                 pnp_register_port_resource(dev, option_flags, p->minimum,
692                                            p->minimum, 0, p->address_length,
693                                            flags | IORESOURCE_IO_FIXED);
694 }
695
696 struct acpipnp_parse_option_s {
697         struct pnp_dev *dev;
698         unsigned int option_flags;
699 };
700
701 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
702                                                   void *data)
703 {
704         int priority;
705         struct acpipnp_parse_option_s *parse_data = data;
706         struct pnp_dev *dev = parse_data->dev;
707         unsigned int option_flags = parse_data->option_flags;
708
709         switch (res->type) {
710         case ACPI_RESOURCE_TYPE_IRQ:
711                 pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
712                 break;
713
714         case ACPI_RESOURCE_TYPE_DMA:
715                 pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
716                 break;
717
718         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
719                 switch (res->data.start_dpf.compatibility_priority) {
720                 case ACPI_GOOD_CONFIGURATION:
721                         priority = PNP_RES_PRIORITY_PREFERRED;
722                         break;
723
724                 case ACPI_ACCEPTABLE_CONFIGURATION:
725                         priority = PNP_RES_PRIORITY_ACCEPTABLE;
726                         break;
727
728                 case ACPI_SUB_OPTIMAL_CONFIGURATION:
729                         priority = PNP_RES_PRIORITY_FUNCTIONAL;
730                         break;
731                 default:
732                         priority = PNP_RES_PRIORITY_INVALID;
733                         break;
734                 }
735                 parse_data->option_flags = pnp_new_dependent_set(dev, priority);
736                 break;
737
738         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
739                 parse_data->option_flags = 0;
740                 break;
741
742         case ACPI_RESOURCE_TYPE_IO:
743                 pnpacpi_parse_port_option(dev, option_flags, &res->data.io);
744                 break;
745
746         case ACPI_RESOURCE_TYPE_FIXED_IO:
747                 pnpacpi_parse_fixed_port_option(dev, option_flags,
748                                                 &res->data.fixed_io);
749                 break;
750
751         case ACPI_RESOURCE_TYPE_VENDOR:
752         case ACPI_RESOURCE_TYPE_END_TAG:
753                 break;
754
755         case ACPI_RESOURCE_TYPE_MEMORY24:
756                 pnpacpi_parse_mem24_option(dev, option_flags,
757                                            &res->data.memory24);
758                 break;
759
760         case ACPI_RESOURCE_TYPE_MEMORY32:
761                 pnpacpi_parse_mem32_option(dev, option_flags,
762                                            &res->data.memory32);
763                 break;
764
765         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
766                 pnpacpi_parse_fixed_mem32_option(dev, option_flags,
767                                                  &res->data.fixed_memory32);
768                 break;
769
770         case ACPI_RESOURCE_TYPE_ADDRESS16:
771         case ACPI_RESOURCE_TYPE_ADDRESS32:
772         case ACPI_RESOURCE_TYPE_ADDRESS64:
773                 pnpacpi_parse_address_option(dev, option_flags, res);
774                 break;
775
776         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
777                 pnpacpi_parse_ext_address_option(dev, option_flags, res);
778                 break;
779
780         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
781                 pnpacpi_parse_ext_irq_option(dev, option_flags,
782                                              &res->data.extended_irq);
783                 break;
784
785         case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
786                 break;
787
788         default:
789                 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
790                          res->type);
791                 return AE_ERROR;
792         }
793
794         return AE_OK;
795 }
796
797 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
798 {
799         struct acpi_device *acpi_dev = dev->data;
800         acpi_handle handle = acpi_dev->handle;
801         acpi_status status;
802         struct acpipnp_parse_option_s parse_data;
803
804         pnp_dbg(&dev->dev, "parse resource options\n");
805
806         parse_data.dev = dev;
807         parse_data.option_flags = 0;
808
809         status = acpi_walk_resources(handle, METHOD_NAME__PRS,
810                                      pnpacpi_option_resource, &parse_data);
811
812         if (ACPI_FAILURE(status)) {
813                 if (status != AE_NOT_FOUND)
814                         dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
815                 return -EPERM;
816         }
817         return 0;
818 }
819
820 static int pnpacpi_supported_resource(struct acpi_resource *res)
821 {
822         switch (res->type) {
823         case ACPI_RESOURCE_TYPE_IRQ:
824         case ACPI_RESOURCE_TYPE_DMA:
825         case ACPI_RESOURCE_TYPE_IO:
826         case ACPI_RESOURCE_TYPE_FIXED_IO:
827         case ACPI_RESOURCE_TYPE_MEMORY24:
828         case ACPI_RESOURCE_TYPE_MEMORY32:
829         case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
830         case ACPI_RESOURCE_TYPE_ADDRESS16:
831         case ACPI_RESOURCE_TYPE_ADDRESS32:
832         case ACPI_RESOURCE_TYPE_ADDRESS64:
833         case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
834         case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
835                 return 1;
836         }
837         return 0;
838 }
839
840 /*
841  * Set resource
842  */
843 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
844                                            void *data)
845 {
846         int *res_cnt = data;
847
848         if (pnpacpi_supported_resource(res))
849                 (*res_cnt)++;
850         return AE_OK;
851 }
852
853 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
854 {
855         struct acpi_resource **resource = data;
856
857         if (pnpacpi_supported_resource(res)) {
858                 (*resource)->type = res->type;
859                 (*resource)->length = sizeof(struct acpi_resource);
860                 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
861                         (*resource)->data.irq.descriptor_length =
862                                         res->data.irq.descriptor_length;
863                 (*resource)++;
864         }
865
866         return AE_OK;
867 }
868
869 int pnpacpi_build_resource_template(struct pnp_dev *dev,
870                                     struct acpi_buffer *buffer)
871 {
872         struct acpi_device *acpi_dev = dev->data;
873         acpi_handle handle = acpi_dev->handle;
874         struct acpi_resource *resource;
875         int res_cnt = 0;
876         acpi_status status;
877
878         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
879                                      pnpacpi_count_resources, &res_cnt);
880         if (ACPI_FAILURE(status)) {
881                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
882                 return -EINVAL;
883         }
884         if (!res_cnt)
885                 return -EINVAL;
886         buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
887         buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
888         if (!buffer->pointer)
889                 return -ENOMEM;
890
891         resource = (struct acpi_resource *)buffer->pointer;
892         status = acpi_walk_resources(handle, METHOD_NAME__CRS,
893                                      pnpacpi_type_resources, &resource);
894         if (ACPI_FAILURE(status)) {
895                 kfree(buffer->pointer);
896                 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
897                 return -EINVAL;
898         }
899         /* resource will pointer the end resource now */
900         resource->type = ACPI_RESOURCE_TYPE_END_TAG;
901
902         return 0;
903 }
904
905 static void pnpacpi_encode_irq(struct pnp_dev *dev,
906                                struct acpi_resource *resource,
907                                struct resource *p)
908 {
909         struct acpi_resource_irq *irq = &resource->data.irq;
910         int triggering, polarity, shareable;
911
912         if (!pnp_resource_enabled(p)) {
913                 irq->interrupt_count = 0;
914                 pnp_dbg(&dev->dev, "  encode irq (%s)\n",
915                         p ? "disabled" : "missing");
916                 return;
917         }
918
919         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
920         irq->triggering = triggering;
921         irq->polarity = polarity;
922         irq->sharable = shareable;
923         irq->interrupt_count = 1;
924         irq->interrupts[0] = p->start;
925
926         pnp_dbg(&dev->dev, "  encode irq %d %s %s %s (%d-byte descriptor)\n",
927                 (int) p->start,
928                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
929                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
930                 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
931                 irq->descriptor_length);
932 }
933
934 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
935                                    struct acpi_resource *resource,
936                                    struct resource *p)
937 {
938         struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
939         int triggering, polarity, shareable;
940
941         if (!pnp_resource_enabled(p)) {
942                 extended_irq->interrupt_count = 0;
943                 pnp_dbg(&dev->dev, "  encode extended irq (%s)\n",
944                         p ? "disabled" : "missing");
945                 return;
946         }
947
948         decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
949         extended_irq->producer_consumer = ACPI_CONSUMER;
950         extended_irq->triggering = triggering;
951         extended_irq->polarity = polarity;
952         extended_irq->sharable = shareable;
953         extended_irq->interrupt_count = 1;
954         extended_irq->interrupts[0] = p->start;
955
956         pnp_dbg(&dev->dev, "  encode irq %d %s %s %s\n", (int) p->start,
957                 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
958                 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
959                 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
960 }
961
962 static void pnpacpi_encode_dma(struct pnp_dev *dev,
963                                struct acpi_resource *resource,
964                                struct resource *p)
965 {
966         struct acpi_resource_dma *dma = &resource->data.dma;
967
968         if (!pnp_resource_enabled(p)) {
969                 dma->channel_count = 0;
970                 pnp_dbg(&dev->dev, "  encode dma (%s)\n",
971                         p ? "disabled" : "missing");
972                 return;
973         }
974
975         /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
976         switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
977         case IORESOURCE_DMA_TYPEA:
978                 dma->type = ACPI_TYPE_A;
979                 break;
980         case IORESOURCE_DMA_TYPEB:
981                 dma->type = ACPI_TYPE_B;
982                 break;
983         case IORESOURCE_DMA_TYPEF:
984                 dma->type = ACPI_TYPE_F;
985                 break;
986         default:
987                 dma->type = ACPI_COMPATIBILITY;
988         }
989
990         switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
991         case IORESOURCE_DMA_8BIT:
992                 dma->transfer = ACPI_TRANSFER_8;
993                 break;
994         case IORESOURCE_DMA_8AND16BIT:
995                 dma->transfer = ACPI_TRANSFER_8_16;
996                 break;
997         default:
998                 dma->transfer = ACPI_TRANSFER_16;
999         }
1000
1001         dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
1002         dma->channel_count = 1;
1003         dma->channels[0] = p->start;
1004
1005         pnp_dbg(&dev->dev, "  encode dma %d "
1006                 "type %#x transfer %#x master %d\n",
1007                 (int) p->start, dma->type, dma->transfer, dma->bus_master);
1008 }
1009
1010 static void pnpacpi_encode_io(struct pnp_dev *dev,
1011                               struct acpi_resource *resource,
1012                               struct resource *p)
1013 {
1014         struct acpi_resource_io *io = &resource->data.io;
1015
1016         if (pnp_resource_enabled(p)) {
1017                 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
1018                 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
1019                     ACPI_DECODE_16 : ACPI_DECODE_10;
1020                 io->minimum = p->start;
1021                 io->maximum = p->end;
1022                 io->alignment = 0;      /* Correct? */
1023                 io->address_length = resource_size(p);
1024         } else {
1025                 io->minimum = 0;
1026                 io->address_length = 0;
1027         }
1028
1029         pnp_dbg(&dev->dev, "  encode io %#x-%#x decode %#x\n", io->minimum,
1030                 io->minimum + io->address_length - 1, io->io_decode);
1031 }
1032
1033 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
1034                                     struct acpi_resource *resource,
1035                                     struct resource *p)
1036 {
1037         struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
1038
1039         if (pnp_resource_enabled(p)) {
1040                 fixed_io->address = p->start;
1041                 fixed_io->address_length = resource_size(p);
1042         } else {
1043                 fixed_io->address = 0;
1044                 fixed_io->address_length = 0;
1045         }
1046
1047         pnp_dbg(&dev->dev, "  encode fixed_io %#x-%#x\n", fixed_io->address,
1048                 fixed_io->address + fixed_io->address_length - 1);
1049 }
1050
1051 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
1052                                  struct acpi_resource *resource,
1053                                  struct resource *p)
1054 {
1055         struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
1056
1057         if (pnp_resource_enabled(p)) {
1058                 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
1059                 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1060                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1061                 memory24->minimum = p->start;
1062                 memory24->maximum = p->end;
1063                 memory24->alignment = 0;
1064                 memory24->address_length = resource_size(p);
1065         } else {
1066                 memory24->minimum = 0;
1067                 memory24->address_length = 0;
1068         }
1069
1070         pnp_dbg(&dev->dev, "  encode mem24 %#x-%#x write_protect %#x\n",
1071                 memory24->minimum,
1072                 memory24->minimum + memory24->address_length - 1,
1073                 memory24->write_protect);
1074 }
1075
1076 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1077                                  struct acpi_resource *resource,
1078                                  struct resource *p)
1079 {
1080         struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1081
1082         if (pnp_resource_enabled(p)) {
1083                 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1084                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1085                 memory32->minimum = p->start;
1086                 memory32->maximum = p->end;
1087                 memory32->alignment = 0;
1088                 memory32->address_length = resource_size(p);
1089         } else {
1090                 memory32->minimum = 0;
1091                 memory32->alignment = 0;
1092         }
1093
1094         pnp_dbg(&dev->dev, "  encode mem32 %#x-%#x write_protect %#x\n",
1095                 memory32->minimum,
1096                 memory32->minimum + memory32->address_length - 1,
1097                 memory32->write_protect);
1098 }
1099
1100 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1101                                        struct acpi_resource *resource,
1102                                        struct resource *p)
1103 {
1104         struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1105
1106         if (pnp_resource_enabled(p)) {
1107                 fixed_memory32->write_protect =
1108                     p->flags & IORESOURCE_MEM_WRITEABLE ?
1109                     ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1110                 fixed_memory32->address = p->start;
1111                 fixed_memory32->address_length = resource_size(p);
1112         } else {
1113                 fixed_memory32->address = 0;
1114                 fixed_memory32->address_length = 0;
1115         }
1116
1117         pnp_dbg(&dev->dev, "  encode fixed_mem32 %#x-%#x write_protect %#x\n",
1118                 fixed_memory32->address,
1119                 fixed_memory32->address + fixed_memory32->address_length - 1,
1120                 fixed_memory32->write_protect);
1121 }
1122
1123 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1124 {
1125         int i = 0;
1126         /* pnpacpi_build_resource_template allocates extra mem */
1127         int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1128         struct acpi_resource *resource = buffer->pointer;
1129         int port = 0, irq = 0, dma = 0, mem = 0;
1130
1131         pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1132         while (i < res_cnt) {
1133                 switch (resource->type) {
1134                 case ACPI_RESOURCE_TYPE_IRQ:
1135                         pnpacpi_encode_irq(dev, resource,
1136                                pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1137                         irq++;
1138                         break;
1139
1140                 case ACPI_RESOURCE_TYPE_DMA:
1141                         pnpacpi_encode_dma(dev, resource,
1142                                 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1143                         dma++;
1144                         break;
1145                 case ACPI_RESOURCE_TYPE_IO:
1146                         pnpacpi_encode_io(dev, resource,
1147                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1148                         port++;
1149                         break;
1150                 case ACPI_RESOURCE_TYPE_FIXED_IO:
1151                         pnpacpi_encode_fixed_io(dev, resource,
1152                                 pnp_get_resource(dev, IORESOURCE_IO, port));
1153                         port++;
1154                         break;
1155                 case ACPI_RESOURCE_TYPE_MEMORY24:
1156                         pnpacpi_encode_mem24(dev, resource,
1157                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1158                         mem++;
1159                         break;
1160                 case ACPI_RESOURCE_TYPE_MEMORY32:
1161                         pnpacpi_encode_mem32(dev, resource,
1162                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1163                         mem++;
1164                         break;
1165                 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1166                         pnpacpi_encode_fixed_mem32(dev, resource,
1167                                 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1168                         mem++;
1169                         break;
1170                 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1171                         pnpacpi_encode_ext_irq(dev, resource,
1172                                 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1173                         irq++;
1174                         break;
1175                 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1176                 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1177                 case ACPI_RESOURCE_TYPE_VENDOR:
1178                 case ACPI_RESOURCE_TYPE_END_TAG:
1179                 case ACPI_RESOURCE_TYPE_ADDRESS16:
1180                 case ACPI_RESOURCE_TYPE_ADDRESS32:
1181                 case ACPI_RESOURCE_TYPE_ADDRESS64:
1182                 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1183                 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1184                 default:        /* other type */
1185                         dev_warn(&dev->dev, "can't encode unknown resource "
1186                                  "type %d\n", resource->type);
1187                         return -EINVAL;
1188                 }
1189                 resource++;
1190                 i++;
1191         }
1192         return 0;
1193 }