-/**\r
- Read or write specified attribute of a UFS device.\r
-\r
- @param[in] Private The pointer to the UFS_PEIM_HC_PRIVATE_DATA data structure.\r
- @param[in] Read The boolean variable to show r/w direction.\r
- @param[in] AttrId The ID of Attribute.\r
- @param[in] Index The Index of Attribute.\r
- @param[in] Selector The Selector of Attribute.\r
- @param[in, out] Attributes The value of Attribute to be read or written.\r
-\r
- @retval EFI_SUCCESS The Attribute was read/written successfully.\r
- @retval EFI_DEVICE_ERROR A device error occurred while attempting to r/w the Attribute.\r
- @retval EFI_TIMEOUT A timeout occurred while waiting for the completion of r/w the Attribute.\r
-\r
-**/\r
-EFI_STATUS\r
-UfsRwAttributes (\r
- IN UFS_PEIM_HC_PRIVATE_DATA *Private,\r
- IN BOOLEAN Read,\r
- IN UINT8 AttrId,\r
- IN UINT8 Index,\r
- IN UINT8 Selector,\r
- IN OUT UINT32 *Attributes\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UFS_DEVICE_MANAGEMENT_REQUEST_PACKET Packet;\r
- UINT8 Slot;\r
- UTP_TRD *Trd;\r
- UINTN Address;\r
- UTP_QUERY_RESP_UPIU *QueryResp;\r
- UINT8 *CmdDescBase;\r
- UINT32 CmdDescSize;\r
- UINT32 ReturnData;\r
-\r
- ZeroMem (&Packet, sizeof (UFS_DEVICE_MANAGEMENT_REQUEST_PACKET));\r
-\r
- if (Read) {\r
- Packet.DataDirection = UfsDataIn;\r
- Packet.Opcode = UtpQueryFuncOpcodeRdAttr;\r
- } else {\r
- Packet.DataDirection = UfsDataOut;\r
- Packet.Opcode = UtpQueryFuncOpcodeWrAttr;\r
- }\r
- Packet.DescId = AttrId;\r
- Packet.Index = Index;\r
- Packet.Selector = Selector;\r
- Packet.Timeout = UFS_TIMEOUT;\r
-\r
- //\r
- // Find out which slot of transfer request list is available.\r
- //\r
- Status = UfsFindAvailableSlotInTrl (Private, &Slot);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- \r
- Trd = ((UTP_TRD*)Private->UtpTrlBase) + Slot;\r
- //\r
- // Fill transfer request descriptor to this slot.\r
- //\r
- Status = UfsCreateDMCommandDesc (Private, &Packet, Trd);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Check the transfer request result.\r
- //\r
- CmdDescBase = (UINT8 *)(UINTN)(LShiftU64 ((UINT64)Trd->UcdBaU, 32) | LShiftU64 ((UINT64)Trd->UcdBa, 7));\r
- QueryResp = (UTP_QUERY_RESP_UPIU*)(CmdDescBase + Trd->RuO * sizeof (UINT32));\r
- CmdDescSize = Trd->RuO * sizeof (UINT32) + Trd->RuL * sizeof (UINT32);\r
-\r
- //\r
- // Start to execute the transfer request.\r
- //\r
- UfsStartExecCmd (Private, Slot);\r
-\r
- //\r
- // Wait for the completion of the transfer request.\r
- // \r
- Address = Private->UfsHcBase + UFS_HC_UTRLDBR_OFFSET; \r
- Status = UfsWaitMemSet (Address, BIT0 << Slot, 0, Packet.Timeout);\r
- if (EFI_ERROR (Status)) {\r
- goto Exit;\r
- }\r
-\r
- if (QueryResp->QueryResp != 0) {\r
- DumpQueryResponseResult (QueryResp->QueryResp);\r
- Status = EFI_DEVICE_ERROR;\r
- goto Exit;\r
- }\r
-\r
- if (Trd->Ocs == 0) {\r
- ReturnData = QueryResp->Tsf.Value;\r
- SwapLittleEndianToBigEndian ((UINT8*)&ReturnData, sizeof (UINT32));\r
- *Attributes = ReturnData;\r
- } else {\r
- Status = EFI_DEVICE_ERROR;\r
- }\r
-\r
-Exit:\r
- UfsStopExecCmd (Private, Slot);\r
- UfsPeimFreeMem (Private->Pool, CmdDescBase, CmdDescSize);\r