diff options
| author | jji4 <jji4@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-04-01 08:24:58 +0000 |
|---|---|---|
| committer | jji4 <jji4@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-04-01 08:24:58 +0000 |
| commit | ccb491c862cf5137fd4645f83adf529f17313858 (patch) | |
| tree | cd67c28e7388f9a729fb63e8dc0fbc265b9d26dd /MdePkg/Library/UefiScsiLib | |
| parent | 312bc8f87333373d232ec51c99991130ea64fe72 (diff) | |
| download | edk2-platforms-ccb491c862cf5137fd4645f83adf529f17313858.tar.xz | |
Read-Capacity16 command added for SCSI drivers
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7999 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/UefiScsiLib')
| -rw-r--r-- | MdePkg/Library/UefiScsiLib/UefiScsiLib.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/MdePkg/Library/UefiScsiLib/UefiScsiLib.c b/MdePkg/Library/UefiScsiLib/UefiScsiLib.c index e26905e1e3..1458efd2f9 100644 --- a/MdePkg/Library/UefiScsiLib/UefiScsiLib.c +++ b/MdePkg/Library/UefiScsiLib/UefiScsiLib.c @@ -636,6 +636,100 @@ ScsiReadCapacityCommand ( /**
+ Function to submit read capacity16 command.
+
+ @param ScsiIo A pointer to SCSI IO protocol.
+ @param Timeout The length of timeout period.
+ @param SenseData A pointer to output sense data.
+ @param SenseDataLength The length of output sense data.
+ @param HostAdapterStatus The status of Host Adapter.
+ @param TargetStatus The status of the target.
+ @param DataBuffer A pointer to a data buffer.
+ @param DataLength The length of data buffer.
+ @param PMI Partial medium indicator.
+
+ @retval EFI_SUCCESS The status of the unit is tested successfully.
+ @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed,
+ but the entire DataBuffer could not be transferred.
+ The actual number of bytes transferred is returned
+ in TransferLength.
+ @retval EFI_NOT_READY The SCSI Request Packet could not be sent because
+ there are too many SCSI Command Packets already
+ queued.
+ @retval EFI_DEVICE_ERROR A device error occurred while attempting to send
+ the SCSI Request Packet.
+ @retval EFI_INVALID_PARAMETER The contents of CommandPacket are invalid.
+ @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet
+ is not supported by the SCSI initiator(i.e., SCSI
+ Host Controller).
+ @retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI
+ Request Packet to execute.
+
+**/
+
+EFI_STATUS
+EFIAPI
+ScsiReadCapacity16Command (
+ IN EFI_SCSI_IO_PROTOCOL *ScsiIo,
+ IN UINT64 Timeout,
+ IN VOID *SenseData,
+ IN OUT UINT8 *SenseDataLength,
+ OUT UINT8 *HostAdapterStatus,
+ OUT UINT8 *TargetStatus,
+ OUT VOID *DataBuffer,
+ IN OUT UINT32 *DataLength,
+ IN BOOLEAN PMI
+ )
+{
+ EFI_SCSI_IO_SCSI_REQUEST_PACKET CommandPacket;
+ UINT64 Lun;
+ UINT8 *Target;
+ UINT8 TargetArray[EFI_SCSI_TARGET_MAX_BYTES];
+ EFI_STATUS Status;
+ UINT8 Cdb[16];
+
+ ZeroMem (&CommandPacket, sizeof (EFI_SCSI_IO_SCSI_REQUEST_PACKET));
+ ZeroMem (Cdb, 16);
+
+ CommandPacket.Timeout = Timeout;
+ CommandPacket.InDataBuffer = DataBuffer;
+ CommandPacket.SenseData = SenseData;
+ CommandPacket.InTransferLength= *DataLength;
+ CommandPacket.Cdb = Cdb;
+ //
+ // Fill Cdb for Read Capacity Command
+ //
+ Target = &TargetArray[0];
+ ScsiIo->GetDeviceLocation (ScsiIo, &Target, &Lun);
+
+ Cdb[0] = EFI_SCSI_OP_READ_CAPACITY16;
+ Cdb[1] = 0x10;
+ if (!PMI) {
+ //
+ // Partial medium indicator,if PMI is FALSE, the Cdb.2 ~ Cdb.9 MUST BE ZERO.
+ //
+ ZeroMem ((Cdb + 2), 8);
+ } else {
+ Cdb[14] |= 0x01;
+ }
+
+ Cdb[13] = 0x20;
+ CommandPacket.CdbLength = 16;
+ CommandPacket.DataDirection = EFI_SCSI_DATA_IN;
+ CommandPacket.SenseDataLength = *SenseDataLength;
+
+ Status = ScsiIo->ExecuteScsiCommand (ScsiIo, &CommandPacket, NULL);
+
+ *HostAdapterStatus = CommandPacket.HostAdapterStatus;
+ *TargetStatus = CommandPacket.TargetStatus;
+ *SenseDataLength = CommandPacket.SenseDataLength;
+ *DataLength = CommandPacket.InTransferLength;
+
+ return Status;
+}
+
+
+/**
Execute Read(10) SCSI command on a specific SCSI target.
Executes the SCSI Read(10) command on the SCSI target specified by ScsiIo.
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