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 struct acpi_device *acpi_dev = dev->data;
469 acpi_handle handle = acpi_dev->handle;
472 pnp_dbg(&dev->dev, "parse allocated resources\n");
474 pnp_init_resources(dev);
476 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
477 pnpacpi_allocated_resource, dev);
479 if (ACPI_FAILURE(status)) {
480 if (status != AE_NOT_FOUND)
481 dev_err(&dev->dev, "can't evaluate _CRS: %d", status);
487 static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
488 unsigned int option_flags,
489 struct acpi_resource_dma *p)
492 unsigned char map = 0, flags;
494 if (p->channel_count == 0)
497 for (i = 0; i < p->channel_count; i++)
498 map |= 1 << p->channels[i];
500 flags = dma_flags(dev, p->type, p->bus_master, p->transfer);
501 pnp_register_dma_resource(dev, option_flags, map, flags);
504 static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
505 unsigned int option_flags,
506 struct acpi_resource_irq *p)
512 if (p->interrupt_count == 0)
515 bitmap_zero(map.bits, PNP_IRQ_NR);
516 for (i = 0; i < p->interrupt_count; i++)
517 if (p->interrupts[i])
518 __set_bit(p->interrupts[i], map.bits);
520 flags = irq_flags(p->triggering, p->polarity, p->sharable);
521 pnp_register_irq_resource(dev, option_flags, &map, flags);
524 static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
525 unsigned int option_flags,
526 struct acpi_resource_extended_irq *p)
532 if (p->interrupt_count == 0)
535 bitmap_zero(map.bits, PNP_IRQ_NR);
536 for (i = 0; i < p->interrupt_count; i++) {
537 if (p->interrupts[i]) {
538 if (p->interrupts[i] < PNP_IRQ_NR)
539 __set_bit(p->interrupts[i], map.bits);
541 dev_err(&dev->dev, "ignoring IRQ %d option "
542 "(too large for %d entry bitmap)\n",
543 p->interrupts[i], PNP_IRQ_NR);
547 flags = irq_flags(p->triggering, p->polarity, p->sharable);
548 pnp_register_irq_resource(dev, option_flags, &map, flags);
551 static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
552 unsigned int option_flags,
553 struct acpi_resource_io *io)
555 unsigned char flags = 0;
557 if (io->address_length == 0)
560 if (io->io_decode == ACPI_DECODE_16)
561 flags = IORESOURCE_IO_16BIT_ADDR;
562 pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum,
563 io->alignment, io->address_length, flags);
566 static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev,
567 unsigned int option_flags,
568 struct acpi_resource_fixed_io *io)
570 if (io->address_length == 0)
573 pnp_register_port_resource(dev, option_flags, io->address, io->address,
574 0, io->address_length, IORESOURCE_IO_FIXED);
577 static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev,
578 unsigned int option_flags,
579 struct acpi_resource_memory24 *p)
581 unsigned char flags = 0;
583 if (p->address_length == 0)
586 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
587 flags = IORESOURCE_MEM_WRITEABLE;
588 pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
589 p->alignment, p->address_length, flags);
592 static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev,
593 unsigned int option_flags,
594 struct acpi_resource_memory32 *p)
596 unsigned char flags = 0;
598 if (p->address_length == 0)
601 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
602 flags = IORESOURCE_MEM_WRITEABLE;
603 pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum,
604 p->alignment, p->address_length, flags);
607 static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev,
608 unsigned int option_flags,
609 struct acpi_resource_fixed_memory32 *p)
611 unsigned char flags = 0;
613 if (p->address_length == 0)
616 if (p->write_protect == ACPI_READ_WRITE_MEMORY)
617 flags = IORESOURCE_MEM_WRITEABLE;
618 pnp_register_mem_resource(dev, option_flags, p->address, p->address,
619 0, p->address_length, flags);
622 static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
623 unsigned int option_flags,
624 struct acpi_resource *r)
626 struct acpi_resource_address64 addr, *p = &addr;
628 unsigned char flags = 0;
630 status = acpi_resource_to_address64(r, p);
631 if (ACPI_FAILURE(status)) {
632 dev_warn(&dev->dev, "can't convert resource type %d\n",
637 if (p->address_length == 0)
640 if (p->resource_type == ACPI_MEMORY_RANGE) {
641 if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
642 flags = IORESOURCE_MEM_WRITEABLE;
643 pnp_register_mem_resource(dev, option_flags, p->minimum,
644 p->minimum, 0, p->address_length,
646 } else if (p->resource_type == ACPI_IO_RANGE)
647 pnp_register_port_resource(dev, option_flags, p->minimum,
648 p->minimum, 0, p->address_length,
649 IORESOURCE_IO_FIXED);
652 static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
653 unsigned int option_flags,
654 struct acpi_resource *r)
656 struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
657 unsigned char flags = 0;
659 if (p->address_length == 0)
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,
668 } else if (p->resource_type == ACPI_IO_RANGE)
669 pnp_register_port_resource(dev, option_flags, p->minimum,
670 p->minimum, 0, p->address_length,
671 IORESOURCE_IO_FIXED);
674 struct acpipnp_parse_option_s {
676 unsigned int option_flags;
679 static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
683 struct acpipnp_parse_option_s *parse_data = data;
684 struct pnp_dev *dev = parse_data->dev;
685 unsigned int option_flags = parse_data->option_flags;
688 case ACPI_RESOURCE_TYPE_IRQ:
689 pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
692 case ACPI_RESOURCE_TYPE_DMA:
693 pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
696 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
697 switch (res->data.start_dpf.compatibility_priority) {
698 case ACPI_GOOD_CONFIGURATION:
699 priority = PNP_RES_PRIORITY_PREFERRED;
702 case ACPI_ACCEPTABLE_CONFIGURATION:
703 priority = PNP_RES_PRIORITY_ACCEPTABLE;
706 case ACPI_SUB_OPTIMAL_CONFIGURATION:
707 priority = PNP_RES_PRIORITY_FUNCTIONAL;
710 priority = PNP_RES_PRIORITY_INVALID;
713 parse_data->option_flags = pnp_new_dependent_set(dev, priority);
716 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
717 parse_data->option_flags = 0;
720 case ACPI_RESOURCE_TYPE_IO:
721 pnpacpi_parse_port_option(dev, option_flags, &res->data.io);
724 case ACPI_RESOURCE_TYPE_FIXED_IO:
725 pnpacpi_parse_fixed_port_option(dev, option_flags,
726 &res->data.fixed_io);
729 case ACPI_RESOURCE_TYPE_VENDOR:
730 case ACPI_RESOURCE_TYPE_END_TAG:
733 case ACPI_RESOURCE_TYPE_MEMORY24:
734 pnpacpi_parse_mem24_option(dev, option_flags,
735 &res->data.memory24);
738 case ACPI_RESOURCE_TYPE_MEMORY32:
739 pnpacpi_parse_mem32_option(dev, option_flags,
740 &res->data.memory32);
743 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
744 pnpacpi_parse_fixed_mem32_option(dev, option_flags,
745 &res->data.fixed_memory32);
748 case ACPI_RESOURCE_TYPE_ADDRESS16:
749 case ACPI_RESOURCE_TYPE_ADDRESS32:
750 case ACPI_RESOURCE_TYPE_ADDRESS64:
751 pnpacpi_parse_address_option(dev, option_flags, res);
754 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
755 pnpacpi_parse_ext_address_option(dev, option_flags, res);
758 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
759 pnpacpi_parse_ext_irq_option(dev, option_flags,
760 &res->data.extended_irq);
763 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
767 dev_warn(&dev->dev, "unknown resource type %d in _PRS\n",
775 int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev)
777 struct acpi_device *acpi_dev = dev->data;
778 acpi_handle handle = acpi_dev->handle;
780 struct acpipnp_parse_option_s parse_data;
782 pnp_dbg(&dev->dev, "parse resource options\n");
784 parse_data.dev = dev;
785 parse_data.option_flags = 0;
787 status = acpi_walk_resources(handle, METHOD_NAME__PRS,
788 pnpacpi_option_resource, &parse_data);
790 if (ACPI_FAILURE(status)) {
791 if (status != AE_NOT_FOUND)
792 dev_err(&dev->dev, "can't evaluate _PRS: %d", status);
798 static int pnpacpi_supported_resource(struct acpi_resource *res)
801 case ACPI_RESOURCE_TYPE_IRQ:
802 case ACPI_RESOURCE_TYPE_DMA:
803 case ACPI_RESOURCE_TYPE_IO:
804 case ACPI_RESOURCE_TYPE_FIXED_IO:
805 case ACPI_RESOURCE_TYPE_MEMORY24:
806 case ACPI_RESOURCE_TYPE_MEMORY32:
807 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
808 case ACPI_RESOURCE_TYPE_ADDRESS16:
809 case ACPI_RESOURCE_TYPE_ADDRESS32:
810 case ACPI_RESOURCE_TYPE_ADDRESS64:
811 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
812 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
821 static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
826 if (pnpacpi_supported_resource(res))
831 static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data)
833 struct acpi_resource **resource = data;
835 if (pnpacpi_supported_resource(res)) {
836 (*resource)->type = res->type;
837 (*resource)->length = sizeof(struct acpi_resource);
838 if (res->type == ACPI_RESOURCE_TYPE_IRQ)
839 (*resource)->data.irq.descriptor_length =
840 res->data.irq.descriptor_length;
847 int pnpacpi_build_resource_template(struct pnp_dev *dev,
848 struct acpi_buffer *buffer)
850 struct acpi_device *acpi_dev = dev->data;
851 acpi_handle handle = acpi_dev->handle;
852 struct acpi_resource *resource;
856 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
857 pnpacpi_count_resources, &res_cnt);
858 if (ACPI_FAILURE(status)) {
859 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
864 buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
865 buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL);
866 if (!buffer->pointer)
869 resource = (struct acpi_resource *)buffer->pointer;
870 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
871 pnpacpi_type_resources, &resource);
872 if (ACPI_FAILURE(status)) {
873 kfree(buffer->pointer);
874 dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status);
877 /* resource will pointer the end resource now */
878 resource->type = ACPI_RESOURCE_TYPE_END_TAG;
883 static void pnpacpi_encode_irq(struct pnp_dev *dev,
884 struct acpi_resource *resource,
887 struct acpi_resource_irq *irq = &resource->data.irq;
888 int triggering, polarity, shareable;
890 if (!pnp_resource_enabled(p)) {
891 irq->interrupt_count = 0;
892 pnp_dbg(&dev->dev, " encode irq (%s)\n",
893 p ? "disabled" : "missing");
897 decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
898 irq->triggering = triggering;
899 irq->polarity = polarity;
900 irq->sharable = shareable;
901 irq->interrupt_count = 1;
902 irq->interrupts[0] = p->start;
904 pnp_dbg(&dev->dev, " encode irq %d %s %s %s (%d-byte descriptor)\n",
906 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
907 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
908 irq->sharable == ACPI_SHARED ? "shared" : "exclusive",
909 irq->descriptor_length);
912 static void pnpacpi_encode_ext_irq(struct pnp_dev *dev,
913 struct acpi_resource *resource,
916 struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq;
917 int triggering, polarity, shareable;
919 if (!pnp_resource_enabled(p)) {
920 extended_irq->interrupt_count = 0;
921 pnp_dbg(&dev->dev, " encode extended irq (%s)\n",
922 p ? "disabled" : "missing");
926 decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable);
927 extended_irq->producer_consumer = ACPI_CONSUMER;
928 extended_irq->triggering = triggering;
929 extended_irq->polarity = polarity;
930 extended_irq->sharable = shareable;
931 extended_irq->interrupt_count = 1;
932 extended_irq->interrupts[0] = p->start;
934 pnp_dbg(&dev->dev, " encode irq %d %s %s %s\n", (int) p->start,
935 triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge",
936 polarity == ACPI_ACTIVE_LOW ? "low" : "high",
937 extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive");
940 static void pnpacpi_encode_dma(struct pnp_dev *dev,
941 struct acpi_resource *resource,
944 struct acpi_resource_dma *dma = &resource->data.dma;
946 if (!pnp_resource_enabled(p)) {
947 dma->channel_count = 0;
948 pnp_dbg(&dev->dev, " encode dma (%s)\n",
949 p ? "disabled" : "missing");
953 /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
954 switch (p->flags & IORESOURCE_DMA_SPEED_MASK) {
955 case IORESOURCE_DMA_TYPEA:
956 dma->type = ACPI_TYPE_A;
958 case IORESOURCE_DMA_TYPEB:
959 dma->type = ACPI_TYPE_B;
961 case IORESOURCE_DMA_TYPEF:
962 dma->type = ACPI_TYPE_F;
965 dma->type = ACPI_COMPATIBILITY;
968 switch (p->flags & IORESOURCE_DMA_TYPE_MASK) {
969 case IORESOURCE_DMA_8BIT:
970 dma->transfer = ACPI_TRANSFER_8;
972 case IORESOURCE_DMA_8AND16BIT:
973 dma->transfer = ACPI_TRANSFER_8_16;
976 dma->transfer = ACPI_TRANSFER_16;
979 dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER);
980 dma->channel_count = 1;
981 dma->channels[0] = p->start;
983 pnp_dbg(&dev->dev, " encode dma %d "
984 "type %#x transfer %#x master %d\n",
985 (int) p->start, dma->type, dma->transfer, dma->bus_master);
988 static void pnpacpi_encode_io(struct pnp_dev *dev,
989 struct acpi_resource *resource,
992 struct acpi_resource_io *io = &resource->data.io;
994 if (pnp_resource_enabled(p)) {
995 /* Note: pnp_assign_port copies pnp_port->flags into p->flags */
996 io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ?
997 ACPI_DECODE_16 : ACPI_DECODE_10;
998 io->minimum = p->start;
999 io->maximum = p->end;
1000 io->alignment = 0; /* Correct? */
1001 io->address_length = p->end - p->start + 1;
1004 io->address_length = 0;
1007 pnp_dbg(&dev->dev, " encode io %#x-%#x decode %#x\n", io->minimum,
1008 io->minimum + io->address_length - 1, io->io_decode);
1011 static void pnpacpi_encode_fixed_io(struct pnp_dev *dev,
1012 struct acpi_resource *resource,
1015 struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io;
1017 if (pnp_resource_enabled(p)) {
1018 fixed_io->address = p->start;
1019 fixed_io->address_length = p->end - p->start + 1;
1021 fixed_io->address = 0;
1022 fixed_io->address_length = 0;
1025 pnp_dbg(&dev->dev, " encode fixed_io %#x-%#x\n", fixed_io->address,
1026 fixed_io->address + fixed_io->address_length - 1);
1029 static void pnpacpi_encode_mem24(struct pnp_dev *dev,
1030 struct acpi_resource *resource,
1033 struct acpi_resource_memory24 *memory24 = &resource->data.memory24;
1035 if (pnp_resource_enabled(p)) {
1036 /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */
1037 memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1038 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1039 memory24->minimum = p->start;
1040 memory24->maximum = p->end;
1041 memory24->alignment = 0;
1042 memory24->address_length = p->end - p->start + 1;
1044 memory24->minimum = 0;
1045 memory24->address_length = 0;
1048 pnp_dbg(&dev->dev, " encode mem24 %#x-%#x write_protect %#x\n",
1050 memory24->minimum + memory24->address_length - 1,
1051 memory24->write_protect);
1054 static void pnpacpi_encode_mem32(struct pnp_dev *dev,
1055 struct acpi_resource *resource,
1058 struct acpi_resource_memory32 *memory32 = &resource->data.memory32;
1060 if (pnp_resource_enabled(p)) {
1061 memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ?
1062 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1063 memory32->minimum = p->start;
1064 memory32->maximum = p->end;
1065 memory32->alignment = 0;
1066 memory32->address_length = p->end - p->start + 1;
1068 memory32->minimum = 0;
1069 memory32->alignment = 0;
1072 pnp_dbg(&dev->dev, " encode mem32 %#x-%#x write_protect %#x\n",
1074 memory32->minimum + memory32->address_length - 1,
1075 memory32->write_protect);
1078 static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev,
1079 struct acpi_resource *resource,
1082 struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32;
1084 if (pnp_resource_enabled(p)) {
1085 fixed_memory32->write_protect =
1086 p->flags & IORESOURCE_MEM_WRITEABLE ?
1087 ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
1088 fixed_memory32->address = p->start;
1089 fixed_memory32->address_length = p->end - p->start + 1;
1091 fixed_memory32->address = 0;
1092 fixed_memory32->address_length = 0;
1095 pnp_dbg(&dev->dev, " encode fixed_mem32 %#x-%#x write_protect %#x\n",
1096 fixed_memory32->address,
1097 fixed_memory32->address + fixed_memory32->address_length - 1,
1098 fixed_memory32->write_protect);
1101 int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
1104 /* pnpacpi_build_resource_template allocates extra mem */
1105 int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
1106 struct acpi_resource *resource = buffer->pointer;
1107 int port = 0, irq = 0, dma = 0, mem = 0;
1109 pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
1110 while (i < res_cnt) {
1111 switch (resource->type) {
1112 case ACPI_RESOURCE_TYPE_IRQ:
1113 pnpacpi_encode_irq(dev, resource,
1114 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1118 case ACPI_RESOURCE_TYPE_DMA:
1119 pnpacpi_encode_dma(dev, resource,
1120 pnp_get_resource(dev, IORESOURCE_DMA, dma));
1123 case ACPI_RESOURCE_TYPE_IO:
1124 pnpacpi_encode_io(dev, resource,
1125 pnp_get_resource(dev, IORESOURCE_IO, port));
1128 case ACPI_RESOURCE_TYPE_FIXED_IO:
1129 pnpacpi_encode_fixed_io(dev, resource,
1130 pnp_get_resource(dev, IORESOURCE_IO, port));
1133 case ACPI_RESOURCE_TYPE_MEMORY24:
1134 pnpacpi_encode_mem24(dev, resource,
1135 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1138 case ACPI_RESOURCE_TYPE_MEMORY32:
1139 pnpacpi_encode_mem32(dev, resource,
1140 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1143 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
1144 pnpacpi_encode_fixed_mem32(dev, resource,
1145 pnp_get_resource(dev, IORESOURCE_MEM, mem));
1148 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
1149 pnpacpi_encode_ext_irq(dev, resource,
1150 pnp_get_resource(dev, IORESOURCE_IRQ, irq));
1153 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1154 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1155 case ACPI_RESOURCE_TYPE_VENDOR:
1156 case ACPI_RESOURCE_TYPE_END_TAG:
1157 case ACPI_RESOURCE_TYPE_ADDRESS16:
1158 case ACPI_RESOURCE_TYPE_ADDRESS32:
1159 case ACPI_RESOURCE_TYPE_ADDRESS64:
1160 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
1161 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
1162 default: /* other type */
1163 dev_warn(&dev->dev, "can't encode unknown resource "
1164 "type %d\n", resource->type);