diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c b/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c index 252e3d5fa2..88a66aee71 100644 --- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c +++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.c @@ -2,7 +2,7 @@ The EHCI register operation routines.
-Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2007 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -53,6 +53,42 @@ EhcReadCapRegister ( return Data;
}
+/**
+ Read EHCI debug port register.
+
+ @param Ehc The EHCI device.
+ @param Offset Debug port register offset.
+
+ @return The register content read.
+ @retval If err, return 0xffff.
+
+**/
+UINT32
+EhcReadDbgRegister (
+ IN USB2_HC_DEV *Ehc,
+ IN UINT32 Offset
+ )
+{
+ UINT32 Data;
+ EFI_STATUS Status;
+
+ Status = Ehc->PciIo->Mem.Read (
+ Ehc->PciIo,
+ EfiPciIoWidthUint32,
+ Ehc->DebugPortBarNum,
+ (UINT64) (Ehc->DebugPortOffset + Offset),
+ 1,
+ &Data
+ );
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "EhcReadDbgRegister: Pci Io read error - %r at %d\n", Status, Offset));
+ Data = 0xFFFF;
+ }
+
+ return Data;
+}
+
/**
Read EHCI Operation register.
|