linux-kernel - [PATCH v5 29/33] PCI, x86, ACPI: Link acpi ioapic register to ioapic

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Date:	Thu,  2 Jan 2014 16:06:01 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>, Tony Luck <tony.luck@...el.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH v5 29/33] PCI, x86, ACPI: Link acpi ioapic register to ioapic

During ioapic hotplug, acpi_register_ioapic will be called.
Now for x86, that function is blank.
Fill that will update __mp_register_ioapic to use those ioapic.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 arch/x86/kernel/acpi/boot.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 0f9c133..77bf505 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -651,16 +651,26 @@ EXPORT_SYMBOL(acpi_unmap_lsapic);
 
 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
 {
-	/* TBD */
-	return -EINVAL;
+	u64 addr = 0;
+	int apic_id;
+
+	apic_id = acpi_get_ioapic_id(handle, gsi_base, &addr);
+
+	if (apic_id < 0)
+		return -1;
+
+	if (phys_addr != addr)
+		pr_warn("ioapic 0x%02x address is not consistent _CRS/dev(%llx) _MAT/MADT(%llx) \n",
+			apic_id, phys_addr, addr);
+
+	return	__mp_register_ioapic(apic_id, phys_addr, gsi_base, true);
 }
 
 EXPORT_SYMBOL(acpi_register_ioapic);
 
 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
 {
-	/* TBD */
-	return -EINVAL;
+	return mp_unregister_ioapic(gsi_base);
 }
 
 EXPORT_SYMBOL(acpi_unregister_ioapic);
-- 
1.8.4

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