From: rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 27 Aug 2010 03:46:18 +0000 (+0000)
Subject: Add DisableLvtInterrupts() for the Local APIC library class.
X-Git-Tag: edk2-stable201903~15576
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=b1b8c631f613084d43d64d0b9e1d27337d4d8b5a

Add DisableLvtInterrupts() for the Local APIC library class.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10827 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/UefiCpuPkg/Include/Library/LocalApicLib.h b/UefiCpuPkg/Include/Library/LocalApicLib.h
index d565dad96c..d68e0e48b9 100644
--- a/UefiCpuPkg/Include/Library/LocalApicLib.h
+++ b/UefiCpuPkg/Include/Library/LocalApicLib.h
@@ -212,6 +212,17 @@ ProgramVirtualWireMode (
   VOID
   );
 
+/**
+  Disable LINT0 & LINT1 interrupts.
+
+  This function sets the mask flag in the LVT LINT0 & LINT1 registers.
+**/
+VOID
+EFIAPI
+DisableLvtInterrupts (
+  VOID
+  );
+
 /**
   Read the initial count value from the init-count register.
 
diff --git a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
index 1ac3853071..79a0fcd413 100644
--- a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
+++ b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
@@ -460,6 +460,28 @@ ProgramVirtualWireMode (
   WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, Lint.Uint32);
 }
 
+/**
+  Disable LINT0 & LINT1 interrupts.
+
+  This function sets the mask flag in the LVT LINT0 & LINT1 registers.
+**/
+VOID
+EFIAPI
+DisableLvtInterrupts (
+  VOID
+  )
+{
+  LOCAL_APIC_LVT_LINT LvtLint;
+
+  LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);
+  LvtLint.Bits.Mask = 1;
+  WriteLocalApicReg (XAPIC_LVT_LINT0_OFFSET, LvtLint.Uint32);
+
+  LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);
+  LvtLint.Bits.Mask = 1;
+  WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, LvtLint.Uint32);
+}
+
 /**
   Read the initial count value from the init-count register.
 
diff --git a/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c b/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
index 7ee13c3ba6..1cba34cd59 100644
--- a/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
+++ b/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
@@ -543,6 +543,28 @@ ProgramVirtualWireMode (
   WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, Lint.Uint32);
 }
 
+/**
+  Disable LINT0 & LINT1 interrupts.
+
+  This function sets the mask flag in the LVT LINT0 & LINT1 registers.
+**/
+VOID
+EFIAPI
+DisableLvtInterrupts (
+  VOID
+  )
+{
+  LOCAL_APIC_LVT_LINT LvtLint;
+
+  LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);
+  LvtLint.Bits.Mask = 1;
+  WriteLocalApicReg (XAPIC_LVT_LINT0_OFFSET, LvtLint.Uint32);
+
+  LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);
+  LvtLint.Bits.Mask = 1;
+  WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, LvtLint.Uint32);
+}
+
 /**
   Read the initial count value from the init-count register.