mirror of https://gitee.com/openkylin/linux.git
[PATCH] ACPI based I/O APIC hot-plug: add interfaces
This patch adds the following new interfaces for I/O xAPIC hotplug. The implementation of these interfaces depends on each architecture. o int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base); This new interface is to add a new I/O xAPIC specified by phys_addr and gsi_base pair. phys_addr is the physical address to which the I/O xAPIC is mapped and gsi_base is global system interrupt base of the I/O xAPIC. acpi_register_ioapic returns 0 on success, or negative value on error. o int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base); This new interface is to remove a I/O xAPIC specified by gsi_base. acpi_unregister_ioapic returns 0 on success, or negative value on error. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -507,6 +507,22 @@ acpi_unmap_lsapic(int cpu)
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EXPORT_SYMBOL(acpi_unmap_lsapic);
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#endif /* CONFIG_ACPI_HOTPLUG_CPU */
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int
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acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
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{
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/* TBD */
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return -EINVAL;
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}
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EXPORT_SYMBOL(acpi_register_ioapic);
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int
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acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
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{
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/* TBD */
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return -EINVAL;
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}
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EXPORT_SYMBOL(acpi_unregister_ioapic);
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static unsigned long __init
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acpi_scan_rsdp (
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unsigned long start,
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@ -825,4 +825,21 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
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return AE_OK;
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}
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#endif /* CONFIG_NUMA */
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int
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acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base)
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{
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/* TBD */
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return -EINVAL;
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}
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EXPORT_SYMBOL(acpi_register_ioapic);
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int
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acpi_unregister_ioapic (acpi_handle handle, u32 gsi_base)
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{
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/* TBD */
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return -EINVAL;
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}
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EXPORT_SYMBOL(acpi_unregister_ioapic);
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#endif /* CONFIG_ACPI_BOOT */
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@ -407,6 +407,9 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu);
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int acpi_unmap_lsapic(int cpu);
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#endif /* CONFIG_ACPI_HOTPLUG_CPU */
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int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
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int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
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extern int acpi_mp_config;
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extern u32 pci_mmcfg_base_addr;
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