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MdeMoMdeMdeModulePkg/EhciPei: By default power on all root ports of EHCI host controller for recovery path 

Signed-off-by: Tian Feng <feng.tian@intel.com>
Reviewed-by: Sun Rui <rui.sun@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13460 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian 2012-06-18 06:25:34 +00:00
parent af3a71b85b
commit 23b0b15526
1 changed files with 24 additions and 1 deletions
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25
MdeModulePkg/Bus/Pci/EhciPei/EhcPeim.c
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@ -2,7 +2,7 @@
PEIM to produce gPeiUsb2HostControllerPpiGuid based on gPeiUsbControllerPpiGuid
which is used to enable recovery function from USB Drivers.
Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@ -400,6 +400,26 @@ EhcRunHC (
return Status;
}
/**
Power On All EHCI Ports.
@param Ehc The EHCI device.
**/
VOID
EhcPowerOnAllPorts (
IN PEI_USB2_HC_DEV *Ehc
)
{
UINT8 PortNumber;
UINT8 Index;
PortNumber = (UINT8)(Ehc->HcStructParams & HCSP_NPORTS);
for (Index = 0; Index < PortNumber; Index++) {
EhcSetOpRegBit (Ehc, EHC_PORT_STAT_OFFSET + 4 * Index, PORTSC_POWER);
}
}
/**
Initialize the HC hardware.
EHCI spec lists the five things to do to initialize the hardware.
@ -443,6 +463,9 @@ EhcInitHC (
if (Ehc->Urb == NULL) {
return Status;
}
EhcPowerOnAllPorts (Ehc);
MicroSecondDelay (EHC_ROOT_PORT_RECOVERY_STALL);
Status = EhcInitSched (Ehc);