From: "Albecki, Mateusz" <mateusz.albecki@intel.com>
To: edk2-devel@lists.01.org
Cc: "Albecki, Mateusz" <mateusz.albecki@intel.com>,
Hao Wu <hao.a.wu@intel.com>
Subject: [PATCH 2/3] MdeModulePkg/UfsPassThruDxe: Refactor UFS device presence detection
Date: Thu, 28 Mar 2019 14:56:02 +0100 [thread overview]
Message-ID: <e3cef0bd6e33dd0d8826d7386b96f69cd54d1f0a.1553774396.git.mateusz.albecki@intel.com> (raw)
In-Reply-To: <947b069cf75a3418bbd7664d0de60c386753d938.1553774396.git.mateusz.albecki@intel.com>
In-Reply-To: <cover.1553774396.git.mateusz.albecki@intel.com>
In current implementation we are checking for device presence every
time we execute UIC command. To make UfsExecUicCommands more generic
checking device presence has been moved to UfsDeviceDetection.
Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Hao Wu <hao.a.wu@intel.com>
Signed-off-by: Albecki Mateusz <mateusz.albecki@intel.com>
---
.../Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c | 49 ++++++++--------------
1 file changed, 18 insertions(+), 31 deletions(-)
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
index 9d0793c6be..c37161c4ae 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
@@ -1621,7 +1621,7 @@ Exit1:
}
/**
- Sent UIC DME_LINKSTARTUP command to start the link startup procedure.
+ Send UIC command.
@param[in] Private The pointer to the UFS_PASS_THRU_PRIVATE_DATA data structure.
@param[in] UicOpcode The opcode of the UIC command.
@@ -1716,24 +1716,6 @@ UfsExecUicCommands (
}
}
- //
- // Check value of HCS.DP and make sure that there is a device attached to the Link.
- //
- Status = UfsMmioRead32 (Private, UFS_HC_STATUS_OFFSET, &Data);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if ((Data & UFS_HC_HCS_DP) == 0) {
- Status = UfsWaitMemSet (Private, UFS_HC_IS_OFFSET, 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, "UfsPassThruDxe: found a attached UFS device\n"));
-
return EFI_SUCCESS;
}
@@ -1907,8 +1889,9 @@ UfsDeviceDetection (
IN UFS_PASS_THRU_PRIVATE_DATA *Private
)
{
- UINTN Retry;
- EFI_STATUS Status;
+ UINTN Retry;
+ EFI_STATUS Status;
+ UINT32 Data;
//
// Start UFS device detection.
@@ -1916,22 +1899,26 @@ UfsDeviceDetection (
//
for (Retry = 0; Retry < 3; Retry++) {
Status = UfsExecUicCommands (Private, UfsUicDmeLinkStartup, 0, 0, 0);
- if (!EFI_ERROR (Status)) {
- break;
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
}
- if (Status == EFI_NOT_FOUND) {
- continue;
+ Status = UfsMmioRead32 (Private, UFS_HC_STATUS_OFFSET, &Data);
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
}
- return EFI_DEVICE_ERROR;
- }
-
- if (Retry == 3) {
- return EFI_NOT_FOUND;
+ if ((Data & UFS_HC_HCS_DP) == 0) {
+ Status = UfsWaitMemSet (Private, UFS_HC_IS_OFFSET, UFS_HC_IS_ULSS, UFS_HC_IS_ULSS, UFS_TIMEOUT);
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+ } else {
+ return EFI_SUCCESS;
+ }
}
- return EFI_SUCCESS;
+ return EFI_NOT_FOUND;
}
/**
--
2.14.1.windows.1
--------------------------------------------------------------------
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next prev parent reply other threads:[~2019-03-28 13:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-28 13:48 [PATCH 0/3] Implement UFS info protocol to pass additional UIC programming data from platform/silicon specific driver Albecki, Mateusz
2019-03-28 13:48 ` [PATCH 1/3] MdeModulePkg/UfsPassThruDxe: Fix unaligned data transfer handling Albecki, Mateusz
2019-03-28 13:56 ` Albecki, Mateusz [this message]
2019-04-01 6:53 ` [PATCH 2/3] MdeModulePkg/UfsPassThruDxe: Refactor UFS device presence detection Wu, Hao A
2019-03-28 13:56 ` [PATCH 3/3] MdeModulePkg/UfsPassThruDxe: Add UFS info protocol Albecki, Mateusz
2019-04-01 6:53 ` Wu, Hao A
[not found] ` <92CF190FF2351747A47C1708F0E09C0875DE7165@IRSMSX102.ger.corp.intel.com>
2019-04-12 6:35 ` Wu, Hao A
2019-04-12 23:22 ` Albecki, Mateusz
2019-04-15 5:56 ` Wu, Hao A
2019-04-01 6:53 ` [PATCH 0/3] Implement UFS info protocol to pass additional UIC programming data from platform/silicon specific driver Wu, Hao A
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