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MdeModulePkg: Put off UFS HCS.DP checking to fix timing problem

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BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3776

Put off UFS HCS.DP (Device Attached) checking
until UfsDeviceDetection() to fix timing problem.

Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Ian Chiu <Ian.chiu@intel.com>
Cc: Maggie Chu <maggie.chu@intel.com>
Signed-off-by: VincentX Ke <vincentx.ke@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
This commit is contained in:
Ke, VincentX 2021-12-23 15:07:54 +08:00 committed by mergify[bot]
parent 45920941d9
commit 13d9e8ec98
1 changed files with 19 additions and 28 deletions
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47
MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c
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@ -1355,23 +1355,6 @@ UfsExecUicCommands (
} }
} }
//
// Check value of HCS.DP and make sure that there is a device attached to the Link.
//
Address = UfsHcBase + UFS_HC_STATUS_OFFSET;
Data = MmioRead32 (Address);
if ((Data & UFS_HC_HCS_DP) == 0) {
Address = UfsHcBase + UFS_HC_IS_OFFSET;
Status = UfsWaitMemSet (Address, UFS_HC_IS_ULSS, UFS_HC_IS_ULSS, UFS_TIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
return EFI_NOT_FOUND;
}
DEBUG ((DEBUG_INFO, "UfsblockioPei: found a attached UFS device\n"));
return EFI_SUCCESS; return EFI_SUCCESS;
} }
@ -1445,6 +1428,8 @@ UfsDeviceDetection (
) )
{ {
UINTN Retry; UINTN Retry;
UINTN Address;
UINT32 Data;
EFI_STATUS Status; EFI_STATUS Status;
// //
@ -1453,22 +1438,28 @@ UfsDeviceDetection (
// //
for (Retry = 0; Retry < 3; Retry++) { for (Retry = 0; Retry < 3; Retry++) {
Status = UfsExecUicCommands (Private, UfsUicDmeLinkStartup, 0, 0, 0); Status = UfsExecUicCommands (Private, UfsUicDmeLinkStartup, 0, 0, 0);
if (!EFI_ERROR (Status)) { if (EFI_ERROR (Status)) {
break;
}
if (Status == EFI_NOT_FOUND) {
continue;
}
return EFI_DEVICE_ERROR; return EFI_DEVICE_ERROR;
} }
if (Retry == 3) { //
return EFI_NOT_FOUND; // Check value of HCS.DP and make sure that there is a device attached to the Link
//
Address = Private->UfsHcBase + UFS_HC_STATUS_OFFSET;
Data = MmioRead32 (Address);
if ((Data & UFS_HC_HCS_DP) == 0) {
Address = Private->UfsHcBase + UFS_HC_IS_OFFSET;
Status = UfsWaitMemSet (Address, UFS_HC_IS_ULSS, UFS_HC_IS_ULSS, UFS_TIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
} else {
DEBUG ((DEBUG_INFO, "UfsblockioPei: found a attached UFS device\n"));
return EFI_SUCCESS;
}
} }
return EFI_SUCCESS; return EFI_NOT_FOUND;
} }
/** /**