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

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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 PEIM to produce gPeiUsb2HostControllerPpiGuid based on gPeiUsbControllerPpiGuid
which is used to enable recovery function from USB Drivers. 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 This program and the accompanying materials
are licensed and made available under the terms and conditions are licensed and made available under the terms and conditions
@ -400,6 +400,26 @@ EhcRunHC (
return Status; 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. Initialize the HC hardware.
EHCI spec lists the five things to do to initialize the hardware. EHCI spec lists the five things to do to initialize the hardware.
@ -444,6 +464,9 @@ EhcInitHC (
return Status; return Status;
} }
EhcPowerOnAllPorts (Ehc);
MicroSecondDelay (EHC_ROOT_PORT_RECOVERY_STALL);
Status = EhcInitSched (Ehc); Status = EhcInitSched (Ehc);
if (EFI_ERROR (Status)) { if (EFI_ERROR (Status)) {