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![Hans de Goede](/assets/img/avatar_default.png)
Like various other ASUS ExpertBook-s, the ASUS ExpertBook B1402CVA has an ACPI DSDT table that describes IRQ 1 as ActiveLow while the kernel overrides it to EdgeHigh. This prevents the keyboard from working. To fix this issue, add this laptop to the skip_override_table so that the kernel does not override IRQ 1. Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218114 Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1022 lines
29 KiB
C
1022 lines
29 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* drivers/acpi/resource.c - ACPI device resources interpretation.
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*
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* Copyright (C) 2012, Intel Corp.
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* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/acpi.h>
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#include <linux/device.h>
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#include <linux/export.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/irq.h>
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#include <linux/dmi.h>
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#ifdef CONFIG_X86
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#define valid_IRQ(i) (((i) != 0) && ((i) != 2))
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static inline bool acpi_iospace_resource_valid(struct resource *res)
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{
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/* On X86 IO space is limited to the [0 - 64K] IO port range */
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return res->end < 0x10003;
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}
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#else
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#define valid_IRQ(i) (true)
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/*
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* ACPI IO descriptors on arches other than X86 contain MMIO CPU physical
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* addresses mapping IO space in CPU physical address space, IO space
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* resources can be placed anywhere in the 64-bit physical address space.
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*/
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static inline bool
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acpi_iospace_resource_valid(struct resource *res) { return true; }
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#endif
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#if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI)
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static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq)
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{
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return ext_irq->resource_source.string_length == 0 &&
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ext_irq->producer_consumer == ACPI_CONSUMER;
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}
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#else
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static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq)
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{
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return true;
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}
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#endif
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static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io)
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{
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u64 reslen = end - start + 1;
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/*
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* CHECKME: len might be required to check versus a minimum
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* length as well. 1 for io is fine, but for memory it does
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* not make any sense at all.
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* Note: some BIOSes report incorrect length for ACPI address space
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* descriptor, so remove check of 'reslen == len' to avoid regression.
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*/
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if (len && reslen && start <= end)
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return true;
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pr_debug("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n",
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io ? "io" : "mem", start, end, len);
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return false;
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}
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static void acpi_dev_memresource_flags(struct resource *res, u64 len,
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u8 write_protect)
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{
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res->flags = IORESOURCE_MEM;
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if (!acpi_dev_resource_len_valid(res->start, res->end, len, false))
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res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
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if (write_protect == ACPI_READ_WRITE_MEMORY)
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res->flags |= IORESOURCE_MEM_WRITEABLE;
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}
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static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len,
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u8 write_protect)
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{
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res->start = start;
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res->end = start + len - 1;
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acpi_dev_memresource_flags(res, len, write_protect);
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}
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/**
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* acpi_dev_resource_memory - Extract ACPI memory resource information.
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* @ares: Input ACPI resource object.
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* @res: Output generic resource object.
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*
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* Check if the given ACPI resource object represents a memory resource and
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* if that's the case, use the information in it to populate the generic
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* resource object pointed to by @res.
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*
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* Return:
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* 1) false with res->flags setting to zero: not the expected resource type
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* 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
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* 3) true: valid assigned resource
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*/
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bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
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{
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struct acpi_resource_memory24 *memory24;
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struct acpi_resource_memory32 *memory32;
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struct acpi_resource_fixed_memory32 *fixed_memory32;
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switch (ares->type) {
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case ACPI_RESOURCE_TYPE_MEMORY24:
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memory24 = &ares->data.memory24;
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acpi_dev_get_memresource(res, memory24->minimum << 8,
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memory24->address_length << 8,
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memory24->write_protect);
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break;
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case ACPI_RESOURCE_TYPE_MEMORY32:
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memory32 = &ares->data.memory32;
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acpi_dev_get_memresource(res, memory32->minimum,
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memory32->address_length,
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memory32->write_protect);
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break;
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case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
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fixed_memory32 = &ares->data.fixed_memory32;
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acpi_dev_get_memresource(res, fixed_memory32->address,
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fixed_memory32->address_length,
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fixed_memory32->write_protect);
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break;
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default:
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res->flags = 0;
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return false;
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}
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return !(res->flags & IORESOURCE_DISABLED);
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}
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EXPORT_SYMBOL_GPL(acpi_dev_resource_memory);
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static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
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u8 io_decode, u8 translation_type)
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{
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res->flags = IORESOURCE_IO;
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if (!acpi_dev_resource_len_valid(res->start, res->end, len, true))
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res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
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if (!acpi_iospace_resource_valid(res))
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res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET;
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if (io_decode == ACPI_DECODE_16)
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res->flags |= IORESOURCE_IO_16BIT_ADDR;
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if (translation_type == ACPI_SPARSE_TRANSLATION)
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res->flags |= IORESOURCE_IO_SPARSE;
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}
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static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
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u8 io_decode)
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{
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res->start = start;
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res->end = start + len - 1;
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acpi_dev_ioresource_flags(res, len, io_decode, 0);
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}
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/**
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* acpi_dev_resource_io - Extract ACPI I/O resource information.
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* @ares: Input ACPI resource object.
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* @res: Output generic resource object.
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*
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* Check if the given ACPI resource object represents an I/O resource and
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* if that's the case, use the information in it to populate the generic
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* resource object pointed to by @res.
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*
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* Return:
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* 1) false with res->flags setting to zero: not the expected resource type
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* 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
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* 3) true: valid assigned resource
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*/
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bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res)
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{
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struct acpi_resource_io *io;
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struct acpi_resource_fixed_io *fixed_io;
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switch (ares->type) {
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case ACPI_RESOURCE_TYPE_IO:
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io = &ares->data.io;
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acpi_dev_get_ioresource(res, io->minimum,
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io->address_length,
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io->io_decode);
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break;
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case ACPI_RESOURCE_TYPE_FIXED_IO:
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fixed_io = &ares->data.fixed_io;
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acpi_dev_get_ioresource(res, fixed_io->address,
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fixed_io->address_length,
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ACPI_DECODE_10);
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break;
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default:
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res->flags = 0;
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return false;
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}
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return !(res->flags & IORESOURCE_DISABLED);
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}
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EXPORT_SYMBOL_GPL(acpi_dev_resource_io);
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static bool acpi_decode_space(struct resource_win *win,
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struct acpi_resource_address *addr,
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struct acpi_address64_attribute *attr)
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{
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u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16;
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bool wp = addr->info.mem.write_protect;
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u64 len = attr->address_length;
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u64 start, end, offset = 0;
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struct resource *res = &win->res;
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/*
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* Filter out invalid descriptor according to ACPI Spec 5.0, section
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* 6.4.3.5 Address Space Resource Descriptors.
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*/
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if ((addr->min_address_fixed != addr->max_address_fixed && len) ||
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(addr->min_address_fixed && addr->max_address_fixed && !len))
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pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n",
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addr->min_address_fixed, addr->max_address_fixed, len);
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/*
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* For bridges that translate addresses across the bridge,
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* translation_offset is the offset that must be added to the
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* address on the secondary side to obtain the address on the
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* primary side. Non-bridge devices must list 0 for all Address
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* Translation offset bits.
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*/
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if (addr->producer_consumer == ACPI_PRODUCER)
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offset = attr->translation_offset;
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else if (attr->translation_offset)
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pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n",
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attr->translation_offset);
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start = attr->minimum + offset;
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end = attr->maximum + offset;
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win->offset = offset;
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res->start = start;
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res->end = end;
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if (sizeof(resource_size_t) < sizeof(u64) &&
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(offset != win->offset || start != res->start || end != res->end)) {
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pr_warn("acpi resource window ([%#llx-%#llx] ignored, not CPU addressable)\n",
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attr->minimum, attr->maximum);
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return false;
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}
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switch (addr->resource_type) {
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case ACPI_MEMORY_RANGE:
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acpi_dev_memresource_flags(res, len, wp);
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break;
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case ACPI_IO_RANGE:
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acpi_dev_ioresource_flags(res, len, iodec,
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addr->info.io.translation_type);
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break;
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case ACPI_BUS_NUMBER_RANGE:
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res->flags = IORESOURCE_BUS;
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break;
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default:
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return false;
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}
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if (addr->producer_consumer == ACPI_PRODUCER)
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res->flags |= IORESOURCE_WINDOW;
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if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
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res->flags |= IORESOURCE_PREFETCH;
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return !(res->flags & IORESOURCE_DISABLED);
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}
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/**
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* acpi_dev_resource_address_space - Extract ACPI address space information.
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* @ares: Input ACPI resource object.
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* @win: Output generic resource object.
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*
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* Check if the given ACPI resource object represents an address space resource
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* and if that's the case, use the information in it to populate the generic
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* resource object pointed to by @win.
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*
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* Return:
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* 1) false with win->res.flags setting to zero: not the expected resource type
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* 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
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* resource
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* 3) true: valid assigned resource
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*/
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bool acpi_dev_resource_address_space(struct acpi_resource *ares,
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struct resource_win *win)
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{
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struct acpi_resource_address64 addr;
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win->res.flags = 0;
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if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr)))
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return false;
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return acpi_decode_space(win, (struct acpi_resource_address *)&addr,
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&addr.address);
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}
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EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
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/**
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* acpi_dev_resource_ext_address_space - Extract ACPI address space information.
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* @ares: Input ACPI resource object.
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* @win: Output generic resource object.
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*
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* Check if the given ACPI resource object represents an extended address space
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* resource and if that's the case, use the information in it to populate the
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* generic resource object pointed to by @win.
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*
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* Return:
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* 1) false with win->res.flags setting to zero: not the expected resource type
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* 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
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* resource
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* 3) true: valid assigned resource
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*/
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bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
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struct resource_win *win)
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{
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struct acpi_resource_extended_address64 *ext_addr;
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win->res.flags = 0;
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if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64)
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return false;
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ext_addr = &ares->data.ext_address64;
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return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr,
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&ext_addr->address);
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}
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EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space);
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/**
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* acpi_dev_irq_flags - Determine IRQ resource flags.
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* @triggering: Triggering type as provided by ACPI.
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* @polarity: Interrupt polarity as provided by ACPI.
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* @shareable: Whether or not the interrupt is shareable.
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* @wake_capable: Wake capability as provided by ACPI.
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*/
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unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable, u8 wake_capable)
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{
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unsigned long flags;
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if (triggering == ACPI_LEVEL_SENSITIVE)
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flags = polarity == ACPI_ACTIVE_LOW ?
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IORESOURCE_IRQ_LOWLEVEL : IORESOURCE_IRQ_HIGHLEVEL;
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else
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flags = polarity == ACPI_ACTIVE_LOW ?
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IORESOURCE_IRQ_LOWEDGE : IORESOURCE_IRQ_HIGHEDGE;
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if (shareable == ACPI_SHARED)
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flags |= IORESOURCE_IRQ_SHAREABLE;
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if (wake_capable == ACPI_WAKE_CAPABLE)
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flags |= IORESOURCE_IRQ_WAKECAPABLE;
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return flags | IORESOURCE_IRQ;
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}
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EXPORT_SYMBOL_GPL(acpi_dev_irq_flags);
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/**
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* acpi_dev_get_irq_type - Determine irq type.
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* @triggering: Triggering type as provided by ACPI.
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* @polarity: Interrupt polarity as provided by ACPI.
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*/
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unsigned int acpi_dev_get_irq_type(int triggering, int polarity)
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{
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switch (polarity) {
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case ACPI_ACTIVE_LOW:
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return triggering == ACPI_EDGE_SENSITIVE ?
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IRQ_TYPE_EDGE_FALLING :
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IRQ_TYPE_LEVEL_LOW;
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case ACPI_ACTIVE_HIGH:
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return triggering == ACPI_EDGE_SENSITIVE ?
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IRQ_TYPE_EDGE_RISING :
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IRQ_TYPE_LEVEL_HIGH;
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case ACPI_ACTIVE_BOTH:
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if (triggering == ACPI_EDGE_SENSITIVE)
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return IRQ_TYPE_EDGE_BOTH;
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fallthrough;
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default:
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return IRQ_TYPE_NONE;
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}
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}
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EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type);
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/*
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* DMI matches for boards where the DSDT specifies the kbd IRQ as
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* level active-low and using the override changes this to rising edge,
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* stopping the keyboard from working.
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*/
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static const struct dmi_system_id irq1_level_low_skip_override[] = {
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{
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/* MEDION P15651 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
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DMI_MATCH(DMI_BOARD_NAME, "M15T"),
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},
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},
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{
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/* MEDION S17405 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
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DMI_MATCH(DMI_BOARD_NAME, "M17T"),
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},
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},
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{
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/* MEDION S17413 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
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DMI_MATCH(DMI_BOARD_NAME, "M1xA"),
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},
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},
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{
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/* Asus Vivobook K3402ZA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "K3402ZA"),
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},
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},
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{
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/* Asus Vivobook K3502ZA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "K3502ZA"),
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},
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},
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{
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/* Asus Vivobook S5402ZA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "S5402ZA"),
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},
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},
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{
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/* Asus Vivobook S5602ZA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"),
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},
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},
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{
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/* Asus ExpertBook B1402CBA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "B1402CBA"),
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},
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},
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{
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/* Asus ExpertBook B1402CVA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "B1402CVA"),
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},
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},
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{
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/* Asus ExpertBook B1502CBA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "B1502CBA"),
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},
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},
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{
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/* Asus ExpertBook B2402CBA */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"),
|
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},
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},
|
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{
|
|
/* Asus ExpertBook B2402FBA */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_BOARD_NAME, "B2402FBA"),
|
|
},
|
|
},
|
|
{
|
|
/* Asus ExpertBook B2502 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"),
|
|
},
|
|
},
|
|
{
|
|
/* LG Electronics 17U70P */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "17U70P"),
|
|
},
|
|
},
|
|
{ }
|
|
};
|
|
|
|
/*
|
|
* DMI matches for AMD Zen boards where the DSDT specifies the kbd IRQ
|
|
* as falling edge and this must be overridden to rising edge,
|
|
* to have a working keyboard.
|
|
*/
|
|
static const struct dmi_system_id irq1_edge_low_force_override[] = {
|
|
{
|
|
/* TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
|
|
},
|
|
},
|
|
{
|
|
/* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
|
|
},
|
|
},
|
|
{
|
|
/* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
|
|
},
|
|
},
|
|
{
|
|
/* MAINGEAR Vector Pro 2 15 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"),
|
|
}
|
|
},
|
|
{
|
|
/* MAINGEAR Vector Pro 2 17 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"),
|
|
},
|
|
},
|
|
{
|
|
/* TongFang GM6BGEQ / PCSpecialist Elimina Pro 16 M, RTX 3050 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_NAME, "GM6BGEQ"),
|
|
},
|
|
},
|
|
{
|
|
/* TongFang GM6BG5Q, RTX 4050 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_NAME, "GM6BG5Q"),
|
|
},
|
|
},
|
|
{
|
|
/* TongFang GM6BG0Q / PCSpecialist Elimina Pro 16 M, RTX 4060 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_NAME, "GM6BG0Q"),
|
|
},
|
|
},
|
|
{ }
|
|
};
|
|
|
|
struct irq_override_cmp {
|
|
const struct dmi_system_id *system;
|
|
unsigned char irq;
|
|
unsigned char triggering;
|
|
unsigned char polarity;
|
|
unsigned char shareable;
|
|
bool override;
|
|
};
|
|
|
|
static const struct irq_override_cmp override_table[] = {
|
|
{ irq1_level_low_skip_override, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false },
|
|
{ irq1_edge_low_force_override, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true },
|
|
};
|
|
|
|
static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
|
|
u8 shareable)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(override_table); i++) {
|
|
const struct irq_override_cmp *entry = &override_table[i];
|
|
|
|
if (dmi_check_system(entry->system) &&
|
|
entry->irq == gsi &&
|
|
entry->triggering == triggering &&
|
|
entry->polarity == polarity &&
|
|
entry->shareable == shareable)
|
|
return entry->override;
|
|
}
|
|
|
|
#ifdef CONFIG_X86
|
|
/*
|
|
* Always use the MADT override info, except for the i8042 PS/2 ctrl
|
|
* IRQs (1 and 12). For these the DSDT IRQ settings should sometimes
|
|
* be used otherwise PS/2 keyboards / mice will not work.
|
|
*/
|
|
if (gsi != 1 && gsi != 12)
|
|
return true;
|
|
|
|
/* If the override comes from an INT_SRC_OVR MADT entry, honor it. */
|
|
if (acpi_int_src_ovr[gsi])
|
|
return true;
|
|
|
|
/*
|
|
* IRQ override isn't needed on modern AMD Zen systems and
|
|
* this override breaks active low IRQs on AMD Ryzen 6000 and
|
|
* newer systems. Skip it.
|
|
*/
|
|
if (boot_cpu_has(X86_FEATURE_ZEN))
|
|
return false;
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
|
|
u8 triggering, u8 polarity, u8 shareable,
|
|
u8 wake_capable, bool check_override)
|
|
{
|
|
int irq, p, t;
|
|
|
|
if (!valid_IRQ(gsi)) {
|
|
irqresource_disabled(res, gsi);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* In IO-APIC mode, use overridden attribute. Two reasons:
|
|
* 1. BIOS bug in DSDT
|
|
* 2. BIOS uses IO-APIC mode Interrupt Source Override
|
|
*
|
|
* We do this only if we are dealing with IRQ() or IRQNoFlags()
|
|
* resource (the legacy ISA resources). With modern ACPI 5 devices
|
|
* using extended IRQ descriptors we take the IRQ configuration
|
|
* from _CRS directly.
|
|
*/
|
|
if (check_override &&
|
|
acpi_dev_irq_override(gsi, triggering, polarity, shareable) &&
|
|
!acpi_get_override_irq(gsi, &t, &p)) {
|
|
u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
|
|
u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
|
|
|
|
if (triggering != trig || polarity != pol) {
|
|
pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi,
|
|
t ? "level" : "edge",
|
|
trig == triggering ? "" : "(!)",
|
|
p ? "low" : "high",
|
|
pol == polarity ? "" : "(!)");
|
|
triggering = trig;
|
|
polarity = pol;
|
|
}
|
|
}
|
|
|
|
res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable);
|
|
irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
|
|
if (irq >= 0) {
|
|
res->start = irq;
|
|
res->end = irq;
|
|
} else {
|
|
irqresource_disabled(res, gsi);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* acpi_dev_resource_interrupt - Extract ACPI interrupt resource information.
|
|
* @ares: Input ACPI resource object.
|
|
* @index: Index into the array of GSIs represented by the resource.
|
|
* @res: Output generic resource object.
|
|
*
|
|
* Check if the given ACPI resource object represents an interrupt resource
|
|
* and @index does not exceed the resource's interrupt count (true is returned
|
|
* in that case regardless of the results of the other checks)). If that's the
|
|
* case, register the GSI corresponding to @index from the array of interrupts
|
|
* represented by the resource and populate the generic resource object pointed
|
|
* to by @res accordingly. If the registration of the GSI is not successful,
|
|
* IORESOURCE_DISABLED will be set it that object's flags.
|
|
*
|
|
* Return:
|
|
* 1) false with res->flags setting to zero: not the expected resource type
|
|
* 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
|
|
* 3) true: valid assigned resource
|
|
*/
|
|
bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
|
|
struct resource *res)
|
|
{
|
|
struct acpi_resource_irq *irq;
|
|
struct acpi_resource_extended_irq *ext_irq;
|
|
|
|
switch (ares->type) {
|
|
case ACPI_RESOURCE_TYPE_IRQ:
|
|
/*
|
|
* Per spec, only one interrupt per descriptor is allowed in
|
|
* _CRS, but some firmware violates this, so parse them all.
|
|
*/
|
|
irq = &ares->data.irq;
|
|
if (index >= irq->interrupt_count) {
|
|
irqresource_disabled(res, 0);
|
|
return false;
|
|
}
|
|
acpi_dev_get_irqresource(res, irq->interrupts[index],
|
|
irq->triggering, irq->polarity,
|
|
irq->shareable, irq->wake_capable,
|
|
true);
|
|
break;
|
|
case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
|
|
ext_irq = &ares->data.extended_irq;
|
|
if (index >= ext_irq->interrupt_count) {
|
|
irqresource_disabled(res, 0);
|
|
return false;
|
|
}
|
|
if (is_gsi(ext_irq))
|
|
acpi_dev_get_irqresource(res, ext_irq->interrupts[index],
|
|
ext_irq->triggering, ext_irq->polarity,
|
|
ext_irq->shareable, ext_irq->wake_capable,
|
|
false);
|
|
else
|
|
irqresource_disabled(res, 0);
|
|
break;
|
|
default:
|
|
res->flags = 0;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt);
|
|
|
|
/**
|
|
* acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources().
|
|
* @list: The head of the resource list to free.
|
|
*/
|
|
void acpi_dev_free_resource_list(struct list_head *list)
|
|
{
|
|
resource_list_free(list);
|
|
}
|
|
EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
|
|
|
|
struct res_proc_context {
|
|
struct list_head *list;
|
|
int (*preproc)(struct acpi_resource *, void *);
|
|
void *preproc_data;
|
|
int count;
|
|
int error;
|
|
};
|
|
|
|
static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
|
|
struct res_proc_context *c)
|
|
{
|
|
struct resource_entry *rentry;
|
|
|
|
rentry = resource_list_create_entry(NULL, 0);
|
|
if (!rentry) {
|
|
c->error = -ENOMEM;
|
|
return AE_NO_MEMORY;
|
|
}
|
|
*rentry->res = win->res;
|
|
rentry->offset = win->offset;
|
|
resource_list_add_tail(rentry, c->list);
|
|
c->count++;
|
|
return AE_OK;
|
|
}
|
|
|
|
static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
|
|
void *context)
|
|
{
|
|
struct res_proc_context *c = context;
|
|
struct resource_win win;
|
|
struct resource *res = &win.res;
|
|
int i;
|
|
|
|
if (c->preproc) {
|
|
int ret;
|
|
|
|
ret = c->preproc(ares, c->preproc_data);
|
|
if (ret < 0) {
|
|
c->error = ret;
|
|
return AE_ABORT_METHOD;
|
|
} else if (ret > 0) {
|
|
return AE_OK;
|
|
}
|
|
}
|
|
|
|
memset(&win, 0, sizeof(win));
|
|
|
|
if (acpi_dev_resource_memory(ares, res)
|
|
|| acpi_dev_resource_io(ares, res)
|
|
|| acpi_dev_resource_address_space(ares, &win)
|
|
|| acpi_dev_resource_ext_address_space(ares, &win))
|
|
return acpi_dev_new_resource_entry(&win, c);
|
|
|
|
for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
|
|
acpi_status status;
|
|
|
|
status = acpi_dev_new_resource_entry(&win, c);
|
|
if (ACPI_FAILURE(status))
|
|
return status;
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
static int __acpi_dev_get_resources(struct acpi_device *adev,
|
|
struct list_head *list,
|
|
int (*preproc)(struct acpi_resource *, void *),
|
|
void *preproc_data, char *method)
|
|
{
|
|
struct res_proc_context c;
|
|
acpi_status status;
|
|
|
|
if (!adev || !adev->handle || !list_empty(list))
|
|
return -EINVAL;
|
|
|
|
if (!acpi_has_method(adev->handle, method))
|
|
return 0;
|
|
|
|
c.list = list;
|
|
c.preproc = preproc;
|
|
c.preproc_data = preproc_data;
|
|
c.count = 0;
|
|
c.error = 0;
|
|
status = acpi_walk_resources(adev->handle, method,
|
|
acpi_dev_process_resource, &c);
|
|
if (ACPI_FAILURE(status)) {
|
|
acpi_dev_free_resource_list(list);
|
|
return c.error ? c.error : -EIO;
|
|
}
|
|
|
|
return c.count;
|
|
}
|
|
|
|
/**
|
|
* acpi_dev_get_resources - Get current resources of a device.
|
|
* @adev: ACPI device node to get the resources for.
|
|
* @list: Head of the resultant list of resources (must be empty).
|
|
* @preproc: The caller's preprocessing routine.
|
|
* @preproc_data: Pointer passed to the caller's preprocessing routine.
|
|
*
|
|
* Evaluate the _CRS method for the given device node and process its output by
|
|
* (1) executing the @preproc() routine provided by the caller, passing the
|
|
* resource pointer and @preproc_data to it as arguments, for each ACPI resource
|
|
* returned and (2) converting all of the returned ACPI resources into struct
|
|
* resource objects if possible. If the return value of @preproc() in step (1)
|
|
* is different from 0, step (2) is not applied to the given ACPI resource and
|
|
* if that value is negative, the whole processing is aborted and that value is
|
|
* returned as the final error code.
|
|
*
|
|
* The resultant struct resource objects are put on the list pointed to by
|
|
* @list, that must be empty initially, as members of struct resource_entry
|
|
* objects. Callers of this routine should use %acpi_dev_free_resource_list() to
|
|
* free that list.
|
|
*
|
|
* The number of resources in the output list is returned on success, an error
|
|
* code reflecting the error condition is returned otherwise.
|
|
*/
|
|
int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
|
|
int (*preproc)(struct acpi_resource *, void *),
|
|
void *preproc_data)
|
|
{
|
|
return __acpi_dev_get_resources(adev, list, preproc, preproc_data,
|
|
METHOD_NAME__CRS);
|
|
}
|
|
EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
|
|
|
|
static int is_memory(struct acpi_resource *ares, void *not_used)
|
|
{
|
|
struct resource_win win;
|
|
struct resource *res = &win.res;
|
|
|
|
memset(&win, 0, sizeof(win));
|
|
|
|
if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM))
|
|
return 1;
|
|
|
|
return !(acpi_dev_resource_memory(ares, res)
|
|
|| acpi_dev_resource_address_space(ares, &win)
|
|
|| acpi_dev_resource_ext_address_space(ares, &win));
|
|
}
|
|
|
|
/**
|
|
* acpi_dev_get_dma_resources - Get current DMA resources of a device.
|
|
* @adev: ACPI device node to get the resources for.
|
|
* @list: Head of the resultant list of resources (must be empty).
|
|
*
|
|
* Evaluate the _DMA method for the given device node and process its
|
|
* output.
|
|
*
|
|
* The resultant struct resource objects are put on the list pointed to
|
|
* by @list, that must be empty initially, as members of struct
|
|
* resource_entry objects. Callers of this routine should use
|
|
* %acpi_dev_free_resource_list() to free that list.
|
|
*
|
|
* The number of resources in the output list is returned on success,
|
|
* an error code reflecting the error condition is returned otherwise.
|
|
*/
|
|
int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list)
|
|
{
|
|
return __acpi_dev_get_resources(adev, list, is_memory, NULL,
|
|
METHOD_NAME__DMA);
|
|
}
|
|
EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources);
|
|
|
|
/**
|
|
* acpi_dev_get_memory_resources - Get current memory resources of a device.
|
|
* @adev: ACPI device node to get the resources for.
|
|
* @list: Head of the resultant list of resources (must be empty).
|
|
*
|
|
* This is a helper function that locates all memory type resources of @adev
|
|
* with acpi_dev_get_resources().
|
|
*
|
|
* The number of resources in the output list is returned on success, an error
|
|
* code reflecting the error condition is returned otherwise.
|
|
*/
|
|
int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list)
|
|
{
|
|
return acpi_dev_get_resources(adev, list, is_memory, NULL);
|
|
}
|
|
EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources);
|
|
|
|
/**
|
|
* acpi_dev_filter_resource_type - Filter ACPI resource according to resource
|
|
* types
|
|
* @ares: Input ACPI resource object.
|
|
* @types: Valid resource types of IORESOURCE_XXX
|
|
*
|
|
* This is a helper function to support acpi_dev_get_resources(), which filters
|
|
* ACPI resource objects according to resource types.
|
|
*/
|
|
int acpi_dev_filter_resource_type(struct acpi_resource *ares,
|
|
unsigned long types)
|
|
{
|
|
unsigned long type = 0;
|
|
|
|
switch (ares->type) {
|
|
case ACPI_RESOURCE_TYPE_MEMORY24:
|
|
case ACPI_RESOURCE_TYPE_MEMORY32:
|
|
case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
|
|
type = IORESOURCE_MEM;
|
|
break;
|
|
case ACPI_RESOURCE_TYPE_IO:
|
|
case ACPI_RESOURCE_TYPE_FIXED_IO:
|
|
type = IORESOURCE_IO;
|
|
break;
|
|
case ACPI_RESOURCE_TYPE_IRQ:
|
|
case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
|
|
type = IORESOURCE_IRQ;
|
|
break;
|
|
case ACPI_RESOURCE_TYPE_DMA:
|
|
case ACPI_RESOURCE_TYPE_FIXED_DMA:
|
|
type = IORESOURCE_DMA;
|
|
break;
|
|
case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
|
|
type = IORESOURCE_REG;
|
|
break;
|
|
case ACPI_RESOURCE_TYPE_ADDRESS16:
|
|
case ACPI_RESOURCE_TYPE_ADDRESS32:
|
|
case ACPI_RESOURCE_TYPE_ADDRESS64:
|
|
case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
|
|
if (ares->data.address.resource_type == ACPI_MEMORY_RANGE)
|
|
type = IORESOURCE_MEM;
|
|
else if (ares->data.address.resource_type == ACPI_IO_RANGE)
|
|
type = IORESOURCE_IO;
|
|
else if (ares->data.address.resource_type ==
|
|
ACPI_BUS_NUMBER_RANGE)
|
|
type = IORESOURCE_BUS;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (type & types) ? 0 : 1;
|
|
}
|
|
EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
|
|
|
|
static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res)
|
|
{
|
|
struct list_head resource_list;
|
|
struct resource_entry *rentry;
|
|
int ret, found = 0;
|
|
|
|
INIT_LIST_HEAD(&resource_list);
|
|
ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
|
|
if (ret < 0)
|
|
return 0;
|
|
|
|
list_for_each_entry(rentry, &resource_list, node) {
|
|
if (resource_contains(rentry->res, res)) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
acpi_dev_free_resource_list(&resource_list);
|
|
return found;
|
|
}
|
|
|
|
static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
|
|
void *context, void **ret)
|
|
{
|
|
struct resource *res = context;
|
|
struct acpi_device **consumer = (struct acpi_device **) ret;
|
|
struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
|
|
|
|
if (!adev)
|
|
return AE_OK;
|
|
|
|
if (acpi_dev_consumes_res(adev, res)) {
|
|
*consumer = adev;
|
|
return AE_CTRL_TERMINATE;
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
/**
|
|
* acpi_resource_consumer - Find the ACPI device that consumes @res.
|
|
* @res: Resource to search for.
|
|
*
|
|
* Search the current resource settings (_CRS) of every ACPI device node
|
|
* for @res. If we find an ACPI device whose _CRS includes @res, return
|
|
* it. Otherwise, return NULL.
|
|
*/
|
|
struct acpi_device *acpi_resource_consumer(struct resource *res)
|
|
{
|
|
struct acpi_device *consumer = NULL;
|
|
|
|
acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer);
|
|
return consumer;
|
|
}
|