2 * pnpacpi -- PnP ACPI driver
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>
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
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.
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
23 #include <linux/kernel.h>
24 #include <linux/acpi.h>
25 #include <linux/pci.h>
26 #include <linux/pnp.h>
31 #define valid_IRQ(i) (1)
33 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
39 static int irq_flags(int triggering, int polarity, int shareable)
43 if (triggering == ACPI_LEVEL_SENSITIVE) {
44 if (polarity == ACPI_ACTIVE_LOW)
45 flags = IORESOURCE_IRQ_LOWLEVEL;
47 flags = IORESOURCE_IRQ_HIGHLEVEL;
49 if (polarity == ACPI_ACTIVE_LOW)
50 flags = IORESOURCE_IRQ_LOWEDGE;
52 flags = IORESOURCE_IRQ_HIGHEDGE;
55 if (shareable == ACPI_SHARED)
56 flags |= IORESOURCE_IRQ_SHAREABLE;
61 static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering,
62 int *polarity, int *shareable)
64 switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
65 IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE)) {
66 case IORESOURCE_IRQ_LOWLEVEL:
67 *triggering = ACPI_LEVEL_SENSITIVE;
68 *polarity = ACPI_ACTIVE_LOW;
70 case IORESOURCE_IRQ_HIGHLEVEL:
71 *triggering = ACPI_LEVEL_SENSITIVE;
72 *polarity = ACPI_ACTIVE_HIGH;
74 case IORESOURCE_IRQ_LOWEDGE:
75 *triggering = ACPI_EDGE_SENSITIVE;
76 *polarity = ACPI_ACTIVE_LOW;
78 case IORESOURCE_IRQ_HIGHEDGE:
79 *triggering = ACPI_EDGE_SENSITIVE;
80 *polarity = ACPI_ACTIVE_HIGH;
83 dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
85 *triggering = ACPI_EDGE_SENSITIVE;
86 *polarity = ACPI_ACTIVE_HIGH;
90 if (flags & IORESOURCE_IRQ_SHAREABLE)
91 *shareable = ACPI_SHARED;
93 *shareable = ACPI_EXCLUSIVE;
96 static void pnpacpi_parse_allocated_irqresource(struct pnp_dev *dev,
97 u32 gsi, int triggering,
98 int polarity, int shareable)
103 if (!valid_IRQ(gsi)) {
104 pnp_add_irq_resource(dev, gsi, IORESOURCE_DISABLED);
109 * in IO-APIC mode, use overrided attribute. Two reasons:
110 * 1. BIOS bug in DSDT
111 * 2. BIOS uses IO-APIC mode Interrupt Source Override
113 if (!acpi_get_override_irq(gsi, &t, &p)) {
114 t = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
115 p = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
117 if (triggering != t || polarity != p) {
118 dev_warn(&dev->dev, "IRQ %d override to %s, %s\n",
119 gsi, t ? "edge":"level", p ? "low":"high");
125 flags = irq_flags(triggering, polarity, shareable);
126 irq = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
128 pcibios_penalize_isa_irq(irq, 1);
130 flags |= IORESOURCE_DISABLED;
132 pnp_add_irq_resource(dev, irq, flags);
135 static int dma_flags(struct pnp_dev *dev, int type, int bus_master,
141 flags |= IORESOURCE_DMA_MASTER;
143 case ACPI_COMPATIBILITY:
144 flags |= IORESOURCE_DMA_COMPATIBLE;
147 flags |= IORESOURCE_DMA_TYPEA;
150 flags |= IORESOURCE_DMA_TYPEB;
153 flags |= IORESOURCE_DMA_TYPEF;
156 /* Set a default value ? */
157 flags |= IORESOURCE_DMA_COMPATIBLE;
158 dev_err(&dev->dev, "invalid DMA type %d\n", type);
161 case ACPI_TRANSFER_8:
162 flags |= IORESOURCE_DMA_8BIT;
164 case ACPI_TRANSFER_8_16:
165 flags |= IORESOURCE_DMA_8AND16BIT;
167 case ACPI_TRANSFER_16:
168 flags |= IORESOURCE_DMA_16BIT;
171 /* Set a default value ? */
172 flags |= IORESOURCE_DMA_8AND16BIT;
173 dev_err(&dev->dev, "invalid DMA transfer type %d\n", transfer);
179 static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,
180 u64 len, int io_decode)
183 u64 end = start + len - 1;
185 if (io_decode == ACPI_DECODE_16)
186 flags |= IORESOURCE_IO_16BIT_ADDR;
187 if (len == 0 || end >= 0x10003)
188 flags |= IORESOURCE_DISABLED;
190 pnp_add_io_resource(dev, start, end, flags);
194 * Device CSRs that do not appear in PCI config space should be described
195 * via ACPI. This would normally be done with Address Space Descriptors
196 * marked as "consumer-only," but old versions of Windows and Linux ignore
197 * the producer/consumer flag, so HP invented a vendor-defined resource to
198 * describe the location and size of CSR space.
200 static struct acpi_vendor_uuid hp_ccsr_uuid = {
202 .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
203 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
206 static int vendor_resource_matches(struct pnp_dev *dev,
207 struct acpi_resource_vendor_typed *vendor,
208 struct acpi_vendor_uuid *match,
211 int uuid_len = sizeof(vendor->uuid);
212 u8 uuid_subtype = vendor->uuid_subtype;
213 u8 *uuid = vendor->uuid;
216 /* byte_length includes uuid_subtype and uuid */
217 actual_len = vendor->byte_length - uuid_len - 1;
219 if (uuid_subtype == match->subtype &&
220 uuid_len == sizeof(match->data) &&
221 memcmp(uuid, match->data, uuid_len) == 0) {
222 if (expected_len && expected_len != actual_len) {
223 dev_err(&dev->dev, "wrong vendor descriptor size; "
224 "expected %d, found %d bytes\n",
225 expected_len, actual_len);
235 static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev,
236 struct acpi_resource_vendor_typed *vendor)
238 if (vendor_resource_matches(dev, vendor, &hp_ccsr_uuid, 16)) {
241 memcpy(&start, vendor->byte_data, sizeof(start));
242 memcpy(&length, vendor->byte_data + 8, sizeof(length));
244 pnp_add_mem_resource(dev, start, start + length - 1, 0);
248 static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
253 u64 end = start + len - 1;
256 flags |= IORESOURCE_DISABLED;
257 if (write_protect == ACPI_READ_WRITE_MEMORY)
258 flags |= IORESOURCE_MEM_WRITEABLE;
260 pnp_add_mem_resource(dev, start, end, flags);
263 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
264 struct acpi_resource *res)
266 struct acpi_resource_address64 addr, *p = &addr;
269 status = acpi_resource_to_address64(res, p);
270 if (!ACPI_SUCCESS(status)) {
271 dev_warn(&dev->dev, "failed to convert resource type %d\n",
276 if (p->producer_consumer == ACPI_PRODUCER)
279 if (p->resource_type == ACPI_MEMORY_RANGE)
280 pnpacpi_parse_allocated_memresource(dev,
281 p->minimum, p->address_length,
282 p->info.mem.write_protect);
283 else if (p->resource_type == ACPI_IO_RANGE)
284 pnpacpi_parse_allocated_ioresource(dev,
285 p->minimum, p->address_length,
286 p->granularity == 0xfff ? ACPI_DECODE_10 :
290 static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
291 struct acpi_resource *res)
293 struct acpi_resource_extended_address64 *p = &res->data.ext_address64;
295 if (p->producer_consumer == ACPI_PRODUCER)
298 if (p->resource_type == ACPI_MEMORY_RANGE)
299 pnpacpi_parse_allocated_memresource(dev,
300 p->minimum, p->address_length,
301 p->info.mem.write_protect);
302 else if (p->resource_type == ACPI_IO_RANGE)
303 pnpacpi_parse_allocated_ioresource(dev,
304 p->minimum, p->address_length,
305 p->granularity == 0xfff ? ACPI_DECODE_10 :
309 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
312 struct pnp_dev *dev = data;
313 struct acpi_resource_irq *irq;
314 struct acpi_resource_dma *dma;
315 struct acpi_resource_io *io;
316 struct acpi_resource_fixed_io *fixed_io;
317 struct acpi_resource_vendor_typed *vendor_typed;
318 struct acpi_resource_memory24 *memory24;
319 struct acpi_resource_memory32 *memory32;
320 struct acpi_resource_fixed_memory32 *fixed_memory32;
321 struct acpi_resource_extended_irq *extended_irq;
325 case ACPI_RESOURCE_TYPE_IRQ:
327 * Per spec, only one interrupt per descriptor is allowed in
328 * _CRS, but some firmware violates this, so parse them all.
330 irq = &res->data.irq;
331 if (irq->interrupt_count == 0)
332 pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
334 for (i = 0; i < irq->interrupt_count; i++) {
335 pnpacpi_parse_allocated_irqresource(dev,
343 * The IRQ encoder puts a single interrupt in each
344 * descriptor, so if a _CRS descriptor has more than
345 * one interrupt, we won't be able to re-encode it.
347 if (pnp_can_write(dev) && irq->interrupt_count > 1) {
348 dev_warn(&dev->dev, "multiple interrupts in "
349 "_CRS descriptor; configuration can't "
351 dev->capabilities &= ~PNP_WRITE;
356 case ACPI_RESOURCE_TYPE_DMA:
357 dma = &res->data.dma;
358 if (dma->channel_count > 0 && dma->channels[0] != (u8) -1)
359 flags = dma_flags(dev, dma->type, dma->bus_master,
362 flags = IORESOURCE_DISABLED;
363 pnp_add_dma_resource(dev, dma->channels[0], flags);
366 case ACPI_RESOURCE_TYPE_IO:
368 pnpacpi_parse_allocated_ioresource(dev,
374 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
375 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
378 case ACPI_RESOURCE_TYPE_FIXED_IO:
379 fixed_io = &res->data.fixed_io;
380 pnpacpi_parse_allocated_ioresource(dev,
382 fixed_io->address_length,
386 case ACPI_RESOURCE_TYPE_VENDOR:
387 vendor_typed = &res->data.vendor_typed;
388 pnpacpi_parse_allocated_vendor(dev, vendor_typed);
391 case ACPI_RESOURCE_TYPE_END_TAG:
394 case ACPI_RESOURCE_TYPE_MEMORY24:
395 memory24 = &res->data.memory24;
396 pnpacpi_parse_allocated_memresource(dev,
398 memory24->address_length,
399 memory24->write_protect);
401 case ACPI_RESOURCE_TYPE_MEMORY32:
402 memory32 = &res->data.memory32;
403 pnpacpi_parse_allocated_memresource(dev,
405 memory32->address_length,
406 memory32->write_protect);
408 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
409 fixed_memory32 = &res->data.fixed_memory32;
410 pnpacpi_parse_allocated_memresource(dev,
411 fixed_memory32->address,
412 fixed_memory32->address_length,
413 fixed_memory32->write_protect);
415 case ACPI_RESOURCE_TYPE_ADDRESS16:
416 case ACPI_RESOURCE_TYPE_ADDRESS32:
417 case ACPI_RESOURCE_TYPE_ADDRESS64:
418 pnpacpi_parse_allocated_address_space(dev, res);
421 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
422 pnpacpi_parse_allocated_ext_address_space(dev, res);
425 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
426 extended_irq = &res->data.extended_irq;
428 if (extended_irq->interrupt_count == 0)
429 pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED);
431 for (i = 0; i < extended_irq->interrupt_count; i++) {
432 pnpacpi_parse_allocated_irqresource(dev,
433 extended_irq->interrupts[i],
434 extended_irq->triggering,
435 extended_irq->polarity,
436 extended_irq->sharable);
440 * The IRQ encoder puts a single interrupt in each
441 * descriptor, so if a _CRS descriptor has more than
442 * one interrupt, we won't be able to re-encode it.
444 if (pnp_can_write(dev) &&
445 extended_irq->interrupt_count > 1) {
446 dev_warn(&dev->dev, "multiple interrupts in "
447 "_CRS descriptor; configuration can't "
449 dev->capabilities &= ~PNP_WRITE;
454 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
458 dev_warn(&dev->dev, "unknown resource type %d in _CRS\n",
466 int pnpacpi_parse_allocated_resource(struct pnp_dev *dev)
468 acpi_handle handle = dev->data;
471 pnp_dbg(&dev->dev, "parse allocated resources\n");
473 pnp_init_resources(dev);
475 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
476 pnpacpi_allocated_resource, dev);
478 if (ACPI_FAILURE(status)) {
479 if (status != AE_NOT_FOUND)
480 dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
486 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
487 unsigned int option_flags,
488 struct acpi_resource_dma *p)
491 unsigned char map = 0, flags;
493 if (p->channel_count == 0)
496 for (i = 0; i < p->channel_count; i++)
497 map |= 1 << p->channels[i];
499 flags = dma_flags(dev, p->type, p->bus_master, p->transfer);
500 pnp_register_dma_resource(dev, option_flags, map, flags);
503 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
504 unsigned int option_flags,
505 struct acpi_resource_irq *p)
511 if (p->interrupt_count == 0)
514 bitmap_zero(map.bits, PNP_IRQ_NR);
515 for (i = 0; i < p->interrupt_count; i++)
516 if (p->interrupts[i])
517 __set_bit(p->interrupts[i], map.bits);
519 flags = irq_flags(p->triggering, p->polarity, p->sharable);
520 pnp_register_irq_resource(dev, option_flags, &map, flags);
523 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
524 unsigned int option_flags,
525 struct acpi_resource_extended_irq *p)
531 if (p->interrupt_count == 0)
534 bitmap_zero(map.bits, PNP_IRQ_NR);
535 for (i = 0; i < p->interrupt_count; i++) {
536 if (p->interrupts[i]) {
537 if (p->interrupts[i] < PNP_IRQ_NR)
538 __set_bit(p->interrupts[i], map.bits);
540 dev_err(&dev->dev, "ignoring IRQ %d option "
541 "(too large for %d entry bitmap)\n",
542 p->interrupts[i], PNP_IRQ_NR);
546 flags = irq_flags(p->triggering, p->polarity, p->sharable);
547 pnp_register_irq_resource(dev, option_flags, &map, flags);
550 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
551 unsigned int option_flags,
552 struct acpi_resource_io *io)
554 unsigned char flags = 0;
556 if (io->address_length == 0)
559 if (io->io_decode == ACPI_DECODE_16)
560 flags = IORESOURCE_IO_16BIT_ADDR;
561 pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum,
562 io->alignment, io->address_length, flags);
565 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
566 unsigned int option_flags,
567 struct acpi_resource_fixed_io *io)
569 if (io->address_length == 0)
572 pnp_register_port_resource(dev, option_flags, io->address, io->address,
573 0, io->address_length, IORESOURCE_IO_FIXED);
576 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
577 unsigned int option_flags,
578 struct acpi_resource_memory24 *p)
580 unsigned char flags = 0;
582 if (p->address_length == 0)
585 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
586 flags = IORESOURCE_MEM_WRITEABLE;
587 pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
588 p->alignment, p->address_length, flags);
591 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
592 unsigned int option_flags,
593 struct acpi_resource_memory32 *p)
595 unsigned char flags = 0;
597 if (p->address_length == 0)
600 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
601 flags = IORESOURCE_MEM_WRITEABLE;
602 pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
603 p->alignment, p->address_length, flags);
606 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
607 unsigned int option_flags,
608 struct acpi_resource_fixed_memory32 *p)
610 unsigned char flags = 0;
612 if (p->address_length == 0)
615 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
616 flags = IORESOURCE_MEM_WRITEABLE;
617 pnp_register_mem_resource(dev, option_flags, p->address, p->address,
618 0, p->address_length, flags);
621 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
622 unsigned int option_flags,
623 struct acpi_resource *r)
625 struct acpi_resource_address64 addr, *p = &addr;
627 unsigned char flags = 0;
629 status = acpi_resource_to_address64(r, p);
630 if (ACPI_FAILURE(status)) {
631 dev_warn(&dev->dev, "can't convert resource type %d\n",
636 if (p->address_length == 0)
639 if (p->resource_type == ACPI_MEMORY_RANGE) {
640 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
641 flags = IORESOURCE_MEM_WRITEABLE;
642 pnp_register_mem_resource(dev, option_flags, p->minimum,
643 p->minimum, 0, p->address_length,
645 } else if (p->resource_type == ACPI_IO_RANGE)
646 pnp_register_port_resource(dev, option_flags, p->minimum,
647 p->minimum, 0, p->address_length,
648 IORESOURCE_IO_FIXED);
651 static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
652 unsigned int option_flags,
653 struct acpi_resource *r)
655 struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
656 unsigned char flags = 0;
658 if (p->address_length == 0)
661 if (p->resource_type == ACPI_MEMORY_RANGE) {
662 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
663 flags = IORESOURCE_MEM_WRITEABLE;
664 pnp_register_mem_resource(dev, option_flags, p->minimum,
665 p->minimum, 0, p->address_length,
667 } else if (p->resource_type == ACPI_IO_RANGE)
668 pnp_register_port_resource(dev, option_flags, p->minimum,
669 p->minimum, 0, p->address_length,
670 IORESOURCE_IO_FIXED);
673 struct acpipnp_parse_option_s {
675 unsigned int option_flags;
678 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
682 struct acpipnp_parse_option_s *parse_data = data;
683 struct pnp_dev *dev = parse_data->dev;
684 unsigned int option_flags = parse_data->option_flags;
687 case ACPI_RESOURCE_TYPE_IRQ:
688 pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
691 case ACPI_RESOURCE_TYPE_DMA:
692 pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
695 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
696 switch (res->data.start_dpf.compatibility_priority) {
697 case ACPI_GOOD_CONFIGURATION:
698 priority = PNP_RES_PRIORITY_PREFERRED;
701 case ACPI_ACCEPTABLE_CONFIGURATION:
702 priority = PNP_RES_PRIORITY_ACCEPTABLE;
705 case ACPI_SUB_OPTIMAL_CONFIGURATION:
706 priority = PNP_RES_PRIORITY_FUNCTIONAL;
709 priority = PNP_RES_PRIORITY_INVALID;
712 parse_data->option_flags = pnp_new_dependent_set(dev, priority);
715 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
716 parse_data->option_flags = 0;
719 case ACPI_RESOURCE_TYPE_IO:
720 pnpacpi_parse_port_option(dev, option_flags, &res->data.io);
723 case ACPI_RESOURCE_TYPE_FIXED_IO:
724 pnpacpi_parse_fixed_port_option(dev, option_flags,
725 &res->data.fixed_io);
728 case ACPI_RESOURCE_TYPE_VENDOR:
729 case ACPI_RESOURCE_TYPE_END_TAG:
732 case ACPI_RESOURCE_TYPE_MEMORY24:
733 pnpacpi_parse_mem24_option(dev, option_flags,
734 &res->data.memory24);
737 case ACPI_RESOURCE_TYPE_MEMORY32:
738 pnpacpi_parse_mem32_option(dev, option_flags,
739 &res->data.memory32);
742 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
743 pnpacpi_parse_fixed_mem32_option(dev, option_flags,
744 &res->data.fixed_memory32);
747 case ACPI_RESOURCE_TYPE_ADDRESS16:
748 case ACPI_RESOURCE_TYPE_ADDRESS32:
749 case ACPI_RESOURCE_TYPE_ADDRESS64:
750 pnpacpi_parse_address_option(dev, option_flags, res);
753 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
754 pnpacpi_parse_ext_address_option(dev, option_flags, res);
757 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
758 pnpacpi_parse_ext_irq_option(dev, option_flags,
759 &res->data.extended_irq);
762 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
766 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
774 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
776 acpi_handle handle = dev->data;
778 struct acpipnp_parse_option_s parse_data;
780 pnp_dbg(&dev->dev, "parse resource options\n");
782 parse_data.dev = dev;
783 parse_data.option_flags = 0;
785 status = acpi_walk_resources(handle, METHOD_NAME__PRS,
786 pnpacpi_option_resource, &parse_data);
788 if (ACPI_FAILURE(status)) {
789 if (status != AE_NOT_FOUND)
790 dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
796 static int pnpacpi_supported_resource(struct acpi_resource *res)
799 case ACPI_RESOURCE_TYPE_IRQ:
800 case ACPI_RESOURCE_TYPE_DMA:
801 case ACPI_RESOURCE_TYPE_IO:
802 case ACPI_RESOURCE_TYPE_FIXED_IO:
803 case ACPI_RESOURCE_TYPE_MEMORY24:
804 case ACPI_RESOURCE_TYPE_MEMORY32:
805 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
806 case ACPI_RESOURCE_TYPE_ADDRESS16:
807 case ACPI_RESOURCE_TYPE_ADDRESS32:
808 case ACPI_RESOURCE_TYPE_ADDRESS64:
809 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
810 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
819 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
824 if (pnpacpi_supported_resource(res))
829 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
831 struct acpi_resource **resource = data;
833 if (pnpacpi_supported_resource(res)) {
834 (*resource)->type = res->type;
835 (*resource)->length = sizeof(struct acpi_resource);
836 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
837 (*resource)->data.irq.descriptor_length =
838 res->data.irq.descriptor_length;
845 int pnpacpi_build_resource_template(struct pnp_dev *dev,
846 struct acpi_buffer *buffer)
848 acpi_handle handle = dev->data;
849 struct acpi_resource *resource;
853 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
854 pnpacpi_count_resources, &res_cnt);
855 if (ACPI_FAILURE(status)) {
856 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
861 buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
862 buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
863 if (!buffer->pointer)
866 resource = (struct acpi_resource *)buffer->pointer;
867 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
868 pnpacpi_type_resources, &resource);
869 if (ACPI_FAILURE(status)) {
870 kfree(buffer->pointer);
871 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
874 /* resource will pointer the end resource now */
875 resource->type = ACPI_RESOURCE_TYPE_END_TAG;
880 static void pnpacpi_encode_irq(struct pnp_dev *dev,
881 struct acpi_resource *resource,
884 struct acpi_resource_irq *irq = &resource->data.irq;
885 int triggering, polarity, shareable;
887 if (!pnp_resource_enabled(p)) {
888 irq->interrupt_count = 0;
889 pnp_dbg(&dev->dev, " encode irq (%s)\n",
890 p ? "disabled" : "missing");
894 decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
895 irq->triggering = triggering;
896 irq->polarity = polarity;
897 irq->sharable = shareable;
898 irq->interrupt_count = 1;
899 irq->interrupts[0] = p->start;
901 pnp_dbg(&dev->dev, " encode irq %d %s %s %s (%d-byte descriptor)\n",
903 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
904 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
905 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
906 irq->descriptor_length);
909 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
910 struct acpi_resource *resource,
913 struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
914 int triggering, polarity, shareable;
916 if (!pnp_resource_enabled(p)) {
917 extended_irq->interrupt_count = 0;
918 pnp_dbg(&dev->dev, " encode extended irq (%s)\n",
919 p ? "disabled" : "missing");
923 decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
924 extended_irq->producer_consumer = ACPI_CONSUMER;
925 extended_irq->triggering = triggering;
926 extended_irq->polarity = polarity;
927 extended_irq->sharable = shareable;
928 extended_irq->interrupt_count = 1;
929 extended_irq->interrupts[0] = p->start;
931 pnp_dbg(&dev->dev, " encode irq %d %s %s %s\n", (int) p->start,
932 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
933 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
934 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
937 static void pnpacpi_encode_dma(struct pnp_dev *dev,
938 struct acpi_resource *resource,
941 struct acpi_resource_dma *dma = &resource->data.dma;
943 if (!pnp_resource_enabled(p)) {
944 dma->channel_count = 0;
945 pnp_dbg(&dev->dev, " encode dma (%s)\n",
946 p ? "disabled" : "missing");
950 /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
951 switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
952 case IORESOURCE_DMA_TYPEA:
953 dma->type = ACPI_TYPE_A;
955 case IORESOURCE_DMA_TYPEB:
956 dma->type = ACPI_TYPE_B;
958 case IORESOURCE_DMA_TYPEF:
959 dma->type = ACPI_TYPE_F;
962 dma->type = ACPI_COMPATIBILITY;
965 switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
966 case IORESOURCE_DMA_8BIT:
967 dma->transfer = ACPI_TRANSFER_8;
969 case IORESOURCE_DMA_8AND16BIT:
970 dma->transfer = ACPI_TRANSFER_8_16;
973 dma->transfer = ACPI_TRANSFER_16;
976 dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
977 dma->channel_count = 1;
978 dma->channels[0] = p->start;
980 pnp_dbg(&dev->dev, " encode dma %d "
981 "type %#x transfer %#x master %d\n",
982 (int) p->start, dma->type, dma->transfer, dma->bus_master);
985 static void pnpacpi_encode_io(struct pnp_dev *dev,
986 struct acpi_resource *resource,
989 struct acpi_resource_io *io = &resource->data.io;
991 if (pnp_resource_enabled(p)) {
992 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
993 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
994 ACPI_DECODE_16 : ACPI_DECODE_10;
995 io->minimum = p->start;
996 io->maximum = p->end;
997 io->alignment = 0; /* Correct? */
998 io->address_length = p->end - p->start + 1;
1001 io->address_length = 0;
1004 pnp_dbg(&dev->dev, " encode io %#x-%#x decode %#x\n", io->minimum,
1005 io->minimum + io->address_length - 1, io->io_decode);
1008 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
1009 struct acpi_resource *resource,
1012 struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
1014 if (pnp_resource_enabled(p)) {
1015 fixed_io->address = p->start;
1016 fixed_io->address_length = p->end - p->start + 1;
1018 fixed_io->address = 0;
1019 fixed_io->address_length = 0;
1022 pnp_dbg(&dev->dev, " encode fixed_io %#x-%#x\n", fixed_io->address,
1023 fixed_io->address + fixed_io->address_length - 1);
1026 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
1027 struct acpi_resource *resource,
1030 struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
1032 if (pnp_resource_enabled(p)) {
1033 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
1034 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1035 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1036 memory24->minimum = p->start;
1037 memory24->maximum = p->end;
1038 memory24->alignment = 0;
1039 memory24->address_length = p->end - p->start + 1;
1041 memory24->minimum = 0;
1042 memory24->address_length = 0;
1045 pnp_dbg(&dev->dev, " encode mem24 %#x-%#x write_protect %#x\n",
1047 memory24->minimum + memory24->address_length - 1,
1048 memory24->write_protect);
1051 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1052 struct acpi_resource *resource,
1055 struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1057 if (pnp_resource_enabled(p)) {
1058 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1059 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1060 memory32->minimum = p->start;
1061 memory32->maximum = p->end;
1062 memory32->alignment = 0;
1063 memory32->address_length = p->end - p->start + 1;
1065 memory32->minimum = 0;
1066 memory32->alignment = 0;
1069 pnp_dbg(&dev->dev, " encode mem32 %#x-%#x write_protect %#x\n",
1071 memory32->minimum + memory32->address_length - 1,
1072 memory32->write_protect);
1075 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1076 struct acpi_resource *resource,
1079 struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1081 if (pnp_resource_enabled(p)) {
1082 fixed_memory32->write_protect =
1083 p->flags & IORESOURCE_MEM_WRITEABLE ?
1084 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1085 fixed_memory32->address = p->start;
1086 fixed_memory32->address_length = p->end - p->start + 1;
1088 fixed_memory32->address = 0;
1089 fixed_memory32->address_length = 0;
1092 pnp_dbg(&dev->dev, " encode fixed_mem32 %#x-%#x write_protect %#x\n",
1093 fixed_memory32->address,
1094 fixed_memory32->address + fixed_memory32->address_length - 1,
1095 fixed_memory32->write_protect);
1098 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1101 /* pnpacpi_build_resource_template allocates extra mem */
1102 int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1103 struct acpi_resource *resource = buffer->pointer;
1104 int port = 0, irq = 0, dma = 0, mem = 0;
1106 pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1107 while (i < res_cnt) {
1108 switch (resource->type) {
1109 case ACPI_RESOURCE_TYPE_IRQ:
1110 pnpacpi_encode_irq(dev, resource,
1111 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1115 case ACPI_RESOURCE_TYPE_DMA:
1116 pnpacpi_encode_dma(dev, resource,
1117 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1120 case ACPI_RESOURCE_TYPE_IO:
1121 pnpacpi_encode_io(dev, resource,
1122 pnp_get_resource(dev, IORESOURCE_IO, port));
1125 case ACPI_RESOURCE_TYPE_FIXED_IO:
1126 pnpacpi_encode_fixed_io(dev, resource,
1127 pnp_get_resource(dev, IORESOURCE_IO, port));
1130 case ACPI_RESOURCE_TYPE_MEMORY24:
1131 pnpacpi_encode_mem24(dev, resource,
1132 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1135 case ACPI_RESOURCE_TYPE_MEMORY32:
1136 pnpacpi_encode_mem32(dev, resource,
1137 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1140 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1141 pnpacpi_encode_fixed_mem32(dev, resource,
1142 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1145 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1146 pnpacpi_encode_ext_irq(dev, resource,
1147 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1150 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1151 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1152 case ACPI_RESOURCE_TYPE_VENDOR:
1153 case ACPI_RESOURCE_TYPE_END_TAG:
1154 case ACPI_RESOURCE_TYPE_ADDRESS16:
1155 case ACPI_RESOURCE_TYPE_ADDRESS32:
1156 case ACPI_RESOURCE_TYPE_ADDRESS64:
1157 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1158 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1159 default: /* other type */
1160 dev_warn(&dev->dev, "can't encode unknown resource "
1161 "type %d\n", resource->type);