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MdeModulePkg/Usb: Boost the r/w performance by reducing stall time on polling cmd execution status

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Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14442 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Feng Tian
2013-06-24 03:03:55 +00:00
committed by erictian
parent 22feb630eb
commit ca24313165
13 changed files with 104 additions and 38 deletions
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6
MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
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@ -2,7 +2,7 @@
XHCI transfer scheduling routines.
Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2011 - 2013, 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
@ -1101,7 +1101,7 @@ XhcExecTransfer (
}
Status = EFI_SUCCESS;
Loop = (Timeout * XHC_1_MILLISECOND / XHC_POLL_DELAY) + 1;
Loop = Timeout * XHC_1_MILLISECOND;
if (Timeout == 0) {
Loop = 0xFFFFFFFF;
}
@ -1113,7 +1113,7 @@ XhcExecTransfer (
if (Urb->Finished) {
break;
}
gBS->Stall (XHC_POLL_DELAY);
gBS->Stall (XHC_1_MICROSECOND);
}
if (Index == Loop) {