Revision: 14797
http://sourceforge.net/p/edk2/code/14797
Author: erictian
Date: 2013-10-23 05:35:07 +0000 (Wed, 23 Oct 2013)
Log Message:
-----------
MdeModulePkg/XhciDxe: Dynamically calculate the interval value of interrupt
endpoint context of low/full speed device behind low/full speed hub.
Signed-off-by: Tian, Feng <[email protected]>
reviewed-by: Li, Elvin <[email protected]>
Modified Paths:
--------------
trunk/edk2/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
Modified: trunk/edk2/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
===================================================================
--- trunk/edk2/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c 2013-10-22 08:49:50 UTC
(rev 14796)
+++ trunk/edk2/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c 2013-10-23 05:35:07 UTC
(rev 14797)
@@ -2633,9 +2633,10 @@
if ((DeviceSpeed == EFI_USB_SPEED_FULL) || (DeviceSpeed ==
EFI_USB_SPEED_LOW)) {
Interval = EpDesc->Interval;
//
- // Hard code the interval to MAX first, need calculate through the
bInterval field of Endpoint descriptor.
+ // Calculate through the bInterval field of Endpoint descriptor.
//
- InputContext->EP[Dci-1].Interval = 6;
+ ASSERT (Interval != 0);
+ InputContext->EP[Dci-1].Interval =
(UINT32)HighBitSet32((UINT32)Interval) + 3;
} else if ((DeviceSpeed == EFI_USB_SPEED_HIGH) || (DeviceSpeed ==
EFI_USB_SPEED_SUPER)) {
Interval = EpDesc->Interval;
ASSERT (Interval >= 1 && Interval <= 16);
@@ -2830,9 +2831,10 @@
if ((DeviceSpeed == EFI_USB_SPEED_FULL) || (DeviceSpeed ==
EFI_USB_SPEED_LOW)) {
Interval = EpDesc->Interval;
//
- // Hard code the interval to MAX first, need calculate through the
bInterval field of Endpoint descriptor.
+ // Calculate through the bInterval field of Endpoint descriptor.
//
- InputContext->EP[Dci-1].Interval = 6;
+ ASSERT (Interval != 0);
+ InputContext->EP[Dci-1].Interval =
(UINT32)HighBitSet32((UINT32)Interval) + 3;
} else if ((DeviceSpeed == EFI_USB_SPEED_HIGH) || (DeviceSpeed ==
EFI_USB_SPEED_SUPER)) {
Interval = EpDesc->Interval;
ASSERT (Interval >= 1 && Interval <= 16);
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