From: "Kenji Kaneshige" <kaneshige.kenji@jp.fujitsu.com>
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>
---
arch/i386/kernel/acpi/boot.c | 16 ++++++++++++++++
arch/ia64/kernel/acpi.c | 17 +++++++++++++++++
include/linux/acpi.h | 3 +++
3 files changed, 36 insertions(+)
diff -puN arch/i386/kernel/acpi/boot.c~acpi-based-i-o-apic-hot-plug-add-interfaces arch/i386/kernel/acpi/boot.c
--- 25/arch/i386/kernel/acpi/boot.c~acpi-based-i-o-apic-hot-plug-add-interfaces 2005-04-28 00:24:32.379955976 -0700
+++ 25-akpm/arch/i386/kernel/acpi/boot.c 2005-04-28 00:24:32.386954912 -0700
@@ -506,6 +506,22 @@ acpi_unmap_lsapic(int cpu)
EXPORT_SYMBOL(acpi_unmap_lsapic);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+int
+acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ /* TBD */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int
+acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+ /* TBD */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
static unsigned long __init
acpi_scan_rsdp (
unsigned long start,
diff -puN arch/ia64/kernel/acpi.c~acpi-based-i-o-apic-hot-plug-add-interfaces arch/ia64/kernel/acpi.c
--- 25/arch/ia64/kernel/acpi.c~acpi-based-i-o-apic-hot-plug-add-interfaces 2005-04-28 00:24:32.380955824 -0700
+++ 25-akpm/arch/ia64/kernel/acpi.c 2005-04-28 00:24:32.388954608 -0700
@@ -838,4 +838,21 @@ acpi_map_iosapic (acpi_handle handle, u3
return AE_OK;
}
#endif /* CONFIG_NUMA */
+
+int
+acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ /* TBD */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int
+acpi_unregister_ioapic (acpi_handle handle, u32 gsi_base)
+{
+ /* TBD */
+ return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
#endif /* CONFIG_ACPI_BOOT */
diff -puN include/linux/acpi.h~acpi-based-i-o-apic-hot-plug-add-interfaces include/linux/acpi.h
--- 25/include/linux/acpi.h~acpi-based-i-o-apic-hot-plug-add-interfaces 2005-04-28 00:24:32.382955520 -0700
+++ 25-akpm/include/linux/acpi.h 2005-04-28 00:24:32.389954456 -0700
@@ -403,6 +403,9 @@ int acpi_map_lsapic(acpi_handle handle,
int acpi_unmap_lsapic(int cpu);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
+
extern int acpi_mp_config;
extern u32 pci_mmcfg_base_addr;
_