update Ehci driver to distinct pci memory address and host address

[mirror_edk2.git] / MdeModulePkg / Bus / Pci / EhciDxe / Ehci.h

diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h
index 07abcaf82c2056e6e65085f6bccee1493ebffc70..d6f0003557fb286b9604d47473b8304c25fedd3d 100644 (file)
--- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.h
@@ -139,8 +139,8 @@ struct _USB2_HC_DEV {
   //\r
   // Peroidic (interrupt) transfer schedule data:\r
   //\r
-  VOID                      *PeriodFrame;     // Mapped as common buffer\r
-  VOID                      *PeriodFrameHost;\r
+  VOID                      *PeriodFrame;     // the buffer pointed by this pointer is used to store pci bus address of the QH descriptor.\r
+  VOID                      *PeriodFrameHost; // the buffer pointed by this pointer is used to store host memory address of the QH descriptor.\r
   VOID                      *PeriodFrameMap;\r
 \r
   EHC_QH                    *PeriodOne;\r
@@ -152,7 +152,6 @@ struct _USB2_HC_DEV {
   UINT32                    HcStructParams; // Cache of HC structure parameter, EHC_HCSPARAMS_OFFSET\r
   UINT32                    HcCapParams;    // Cache of HC capability parameter, HCCPARAMS\r
   UINT32                    CapLen;         // Capability length\r
-  UINT32                    High32bitAddr;\r
 \r
   //\r
   // Misc\r