diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h index ca223bd20c..4401675872 100644 --- a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h +++ b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h @@ -2,6 +2,7 @@ Provides some data structure definitions used by the XHCI host controller driver.
+(C) Copyright 2023 Hewlett Packard Enterprise Development LP<BR>
Copyright (c) 2011 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -26,6 +27,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Library/UefiLib.h>
#include <Library/DebugLib.h>
#include <Library/ReportStatusCodeLib.h>
+#include <Library/TimerLib.h>
#include <IndustryStandard/Pci.h>
@@ -38,6 +40,11 @@ typedef struct _USB_DEV_CONTEXT USB_DEV_CONTEXT; #include "UsbHcMem.h"
//
+// Converts a count from microseconds to nanoseconds
+//
+#define XHC_MICROSECOND_TO_NANOSECOND(Time) (MultU64x32((Time), 1000))
+
+//
// The unit is microsecond, setting it as 1us.
//
#define XHC_1_MICROSECOND (1)
@@ -720,4 +727,29 @@ XhcAsyncIsochronousTransfer ( IN VOID *Context
);
+/**
+ Converts a time in nanoseconds to a performance counter tick count.
+
+ @param Time The time in nanoseconds to be converted to performance counter ticks.
+ @return Time in nanoseconds converted to ticks.
+**/
+UINT64
+XhcConvertTimeToTicks (
+ UINT64 Time
+ );
+
+/**
+ Computes and returns the elapsed ticks since PreviousTick. The
+ value of PreviousTick is overwritten with the current performance
+ counter value.
+
+ @param PreviousTick Pointer to PreviousTick count.
+ @return The elapsed ticks since PreviousCount. PreviousCount is
+ overwritten with the current performance counter value.
+**/
+UINT64
+XhcGetElapsedTicks (
+ IN OUT UINT64 *PreviousTick
+ );
+
#endif
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