[reactos] 02/17: [USBSTOR] Do not attempt additional processing of SCSI requests. Now the driver sends all requests transparently. Inspired by Vadim Galyant's patches to usbstor

[Victor Perevertkin]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=b4c03399ba19cfc141dad…
commit b4c03399ba19cfc141dad9582a82ecf88549b760
Author:     Victor Perevertkin <victor(a)perevertkin.ru>
AuthorDate: Tue Mar 26 14:26:06 2019 +0300
Commit:     Victor Perevertkin <victor(a)perevertkin.ru>
CommitDate: Tue Jun 11 04:39:43 2019 +0300
    [USBSTOR] Do not attempt additional processing of SCSI requests.
    Now the driver sends all requests transparently.
    Inspired by Vadim Galyant's patches to usbstor
---
 drivers/usb/usbstor/scsi.c | 436 +--------------------------------------------
 1 file changed, 5 insertions(+), 431 deletions(-)
diff --git a/drivers/usb/usbstor/scsi.c b/drivers/usb/usbstor/scsi.c
index 4c7c3efb7d7..b2989f01fce 100644
--- a/drivers/usb/usbstor/scsi.c
+++ b/drivers/usb/usbstor/scsi.c
@@ -129,8 +129,6 @@ USBSTOR_CSWCompletionRoutine(
     PIO_STACK_LOCATION IoStack;
     PSCSI_REQUEST_BLOCK Request;
     PCDB pCDB;
-    PREAD_CAPACITY_DATA_EX CapacityDataEx;
-    PREAD_CAPACITY_DATA CapacityData;
     PUFI_CAPACITY_RESPONSE Response;
     NTSTATUS Status;
@@ -205,29 +203,6 @@ USBSTOR_CSWCompletionRoutine(
         // store in pdo
         Context->PDODeviceExtension->BlockLength = NTOHL(Response->BlockLength);
         Context->PDODeviceExtension->LastLogicBlockAddress =
NTOHL(Response->LastLogicalBlockAddress);
-
-        if (Request->DataTransferLength == sizeof(READ_CAPACITY_DATA_EX))
-        {
-            // get input buffer
-            CapacityDataEx = (PREAD_CAPACITY_DATA_EX)Request->DataBuffer;
-
-            // set result
-            CapacityDataEx->BytesPerBlock = Response->BlockLength;
-            CapacityDataEx->LogicalBlockAddress.QuadPart =
Response->LastLogicalBlockAddress;
-            Irp->IoStatus.Information = sizeof(READ_CAPACITY_DATA_EX);
-       }
-       else
-       {
-            // get input buffer
-            CapacityData = (PREAD_CAPACITY_DATA)Request->DataBuffer;
-
-            // set result
-            CapacityData->BytesPerBlock = Response->BlockLength;
-            CapacityData->LogicalBlockAddress = Response->LastLogicalBlockAddress;
-            Irp->IoStatus.Information = sizeof(READ_CAPACITY_DATA);
-       }
-
-       FreeItem(Context->TransferData);
     }
     FreeItem(Context->cbw);
@@ -554,350 +529,6 @@ USBSTOR_SendRequest(
     return STATUS_PENDING;
 }
-NTSTATUS
-USBSTOR_SendFormatCapacity(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN PIRP Irp,
-    IN ULONG RetryCount)
-{
-    UFI_READ_FORMAT_CAPACITY Cmd;
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-    PIO_STACK_LOCATION IoStack;
-    PSCSI_REQUEST_BLOCK Request;
-
-    IoStack = IoGetCurrentIrpStackLocation(Irp);
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-    Request = (PSCSI_REQUEST_BLOCK)IoStack->Parameters.Others.Argument1;
-
-    // initialize inquiry cmd
-    RtlZeroMemory(&Cmd, sizeof(UFI_READ_FORMAT_CAPACITY));
-    Cmd.Code = SCSIOP_READ_FORMATTED_CAPACITY;
-    Cmd.LUN = (PDODeviceExtension->LUN & MAX_LUN);
-    Cmd.AllocationLengthMsb = HTONS(Request->DataTransferLength & 0xFFFF) >>
8;
-    Cmd.AllocationLengthLsb = HTONS(Request->DataTransferLength & 0xFFFF) &
0xFF;
-
-    return USBSTOR_SendRequest(DeviceObject, Irp, UFI_READ_FORMAT_CAPACITY_CMD_LEN,
(PUCHAR)&Cmd, Request->DataTransferLength, (PUCHAR)Request->DataBuffer,
RetryCount);
-}
-
-NTSTATUS
-USBSTOR_SendInquiry(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN PIRP Irp,
-    IN ULONG RetryCount)
-{
-    UFI_INQUIRY_CMD Cmd;
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-    PIO_STACK_LOCATION IoStack;
-    PSCSI_REQUEST_BLOCK Request;
-
-    IoStack = IoGetCurrentIrpStackLocation(Irp);
-    Request = (PSCSI_REQUEST_BLOCK)IoStack->Parameters.Others.Argument1;
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
-    // initialize inquiry cmd
-    RtlZeroMemory(&Cmd, sizeof(UFI_INQUIRY_CMD));
-    Cmd.Code = SCSIOP_INQUIRY;
-    Cmd.LUN = (PDODeviceExtension->LUN & MAX_LUN);
-    Cmd.AllocationLength = sizeof(UFI_INQUIRY_RESPONSE);
-
-    ASSERT(Request->DataTransferLength >= sizeof(UFI_INQUIRY_RESPONSE));
-
-    return USBSTOR_SendRequest(DeviceObject, Irp, UFI_INQUIRY_CMD_LEN, (PUCHAR)&Cmd,
Request->DataTransferLength, (PUCHAR)Request->DataBuffer, RetryCount);
-}
-
-NTSTATUS
-USBSTOR_SendCapacity(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN PIRP Irp,
-    IN ULONG RetryCount)
-{
-    UFI_CAPACITY_CMD Cmd;
-    PUFI_CAPACITY_RESPONSE Response;
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
-    Response = (PUFI_CAPACITY_RESPONSE)AllocateItem(NonPagedPool, PAGE_SIZE);
-    if (!Response)
-    {
-        return STATUS_INSUFFICIENT_RESOURCES;
-    }
-
-    // initialize capacity cmd
-    RtlZeroMemory(&Cmd, sizeof(UFI_INQUIRY_CMD));
-    Cmd.Code = SCSIOP_READ_CAPACITY;
-    Cmd.LUN = (PDODeviceExtension->LUN & MAX_LUN);
-
-    return USBSTOR_SendRequest(DeviceObject, Irp, UFI_READ_CAPACITY_CMD_LEN,
(PUCHAR)&Cmd, sizeof(UFI_CAPACITY_RESPONSE), (PUCHAR)Response, RetryCount);
-}
-
-NTSTATUS
-USBSTOR_SendModeSense(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN PIRP Irp,
-    IN ULONG RetryCount)
-{
-#if 0
-    UFI_SENSE_CMD Cmd;
-    NTSTATUS Status;
-    PVOID Response;
-    PCBW OutControl;
-    PCDB pCDB;
-    PUFI_MODE_PARAMETER_HEADER Header;
-#endif
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-    PIO_STACK_LOCATION IoStack;
-    PSCSI_REQUEST_BLOCK Request;
-
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-    ASSERT(PDODeviceExtension->Common.IsFDO == FALSE);
-
-    IoStack = IoGetCurrentIrpStackLocation(Irp);
-    Request = (PSCSI_REQUEST_BLOCK)IoStack->Parameters.Others.Argument1;
-
-    RtlZeroMemory(Request->DataBuffer, Request->DataTransferLength);
-    Request->SrbStatus = SRB_STATUS_SUCCESS;
-    Irp->IoStatus.Information = Request->DataTransferLength;
-    Irp->IoStatus.Status = STATUS_SUCCESS;
-    USBSTOR_QueueTerminateRequest(PDODeviceExtension->LowerDeviceObject, Irp);
-    IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
-    USBSTOR_QueueNextRequest(PDODeviceExtension->LowerDeviceObject);
-
-    return STATUS_SUCCESS;
-
-#if 0
-    //
-    // get SCSI command data block
-    //
-    pCDB = (PCDB)Request->Cdb;
-
-    //
-    // get PDO device extension
-    //
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
-    //
-    // allocate sense response from non paged pool
-    //
-    Response = (PUFI_CAPACITY_RESPONSE)AllocateItem(NonPagedPool,
Request->DataTransferLength);
-    if (!Response)
-    {
-        //
-        // no memory
-        //
-        return STATUS_INSUFFICIENT_RESOURCES;
-    }
-
-    //
-    // sanity check
-    //
-
-
-    // Supported pages
-    // MODE_PAGE_ERROR_RECOVERY
-    // MODE_PAGE_FLEXIBILE
-    // MODE_PAGE_LUN_MAPPING
-    // MODE_PAGE_FAULT_REPORTING
-    // MODE_SENSE_RETURN_ALL
-
-    //
-    // initialize mode sense cmd
-    //
-    RtlZeroMemory(&Cmd, sizeof(UFI_INQUIRY_CMD));
-    Cmd.Code = SCSIOP_MODE_SENSE;
-    Cmd.LUN = (PDODeviceExtension->LUN & MAX_LUN);
-    Cmd.PageCode = pCDB->MODE_SENSE.PageCode;
-    Cmd.PC = pCDB->MODE_SENSE.Pc;
-    Cmd.AllocationLength = HTONS(pCDB->MODE_SENSE.AllocationLength);
-
-    DPRINT1("PageCode %x\n", pCDB->MODE_SENSE.PageCode);
-    DPRINT1("PC %x\n", pCDB->MODE_SENSE.Pc);
-
-    //
-    // now send mode sense cmd
-    //
-    Status = USBSTOR_SendCBW(DeviceObject, UFI_SENSE_CMD_LEN, (PUCHAR)&Cmd,
Request->DataTransferLength, &OutControl);
-    if (!NT_SUCCESS(Status))
-    {
-        //
-        // failed to send CBW
-        //
-        DPRINT1("USBSTOR_SendCapacityCmd> USBSTOR_SendCBW failed with %x\n",
Status);
-        FreeItem(Response);
-        ASSERT(FALSE);
-        return Status;
-    }
-
-    //
-    // now send data block response
-    //
-    Status = USBSTOR_SendData(DeviceObject, Request->DataTransferLength, Response);
-    if (!NT_SUCCESS(Status))
-    {
-        //
-        // failed to send CBW
-        //
-        DPRINT1("USBSTOR_SendCapacityCmd> USBSTOR_SendData failed with
%x\n", Status);
-        FreeItem(Response);
-        ASSERT(FALSE);
-        return Status;
-    }
-
-    Header = (PUFI_MODE_PARAMETER_HEADER)Response;
-
-    //
-    // TODO: build layout
-    //
-    // first struct is the header
-    // MODE_PARAMETER_HEADER / _MODE_PARAMETER_HEADER10
-    //
-    // followed by
-    // MODE_PARAMETER_BLOCK
-    //
-    //
-    UNIMPLEMENTED;
-
-    //
-    // send csw
-    //
-    Status = USBSTOR_SendCSW(DeviceObject, OutControl, 512, &CSW);
-
-    DPRINT1("------------------------\n");
-    DPRINT1("CSW %p\n", &CSW);
-    DPRINT1("Signature %x\n", CSW.Signature);
-    DPRINT1("Tag %x\n", CSW.Tag);
-    DPRINT1("DataResidue %x\n", CSW.DataResidue);
-    DPRINT1("Status %x\n", CSW.Status);
-
-    //
-    // FIXME: handle error
-    //
-    ASSERT(CSW.Status == 0);
-    ASSERT(CSW.DataResidue == 0);
-
-    //
-    // calculate transfer length
-    //
-    *TransferBufferLength = Request->DataTransferLength - CSW.DataResidue;
-
-    //
-    // copy buffer
-    //
-    RtlCopyMemory(Request->DataBuffer, Response, *TransferBufferLength);
-
-    //
-    // free item
-    //
-    FreeItem(OutControl);
-
-    //
-    // free response
-    //
-    FreeItem(Response);
-
-    //
-    // done
-    //
-    return Status;
-#endif
-}
-
-NTSTATUS
-USBSTOR_SendReadWrite(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN PIRP Irp,
-    IN ULONG RetryCount)
-{
-    UFI_READ_WRITE_CMD Cmd;
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-    PCDB pCDB;
-    ULONG BlockCount, Temp;
-    PIO_STACK_LOCATION IoStack;
-    PSCSI_REQUEST_BLOCK Request;
-
-    IoStack = IoGetCurrentIrpStackLocation(Irp);
-    Request = (PSCSI_REQUEST_BLOCK)IoStack->Parameters.Others.Argument1;
-
-    pCDB = (PCDB)Request->Cdb;
-
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
-    DPRINT("USBSTOR_SendReadWrite DataTransferLength %lu, BlockLength %lu\n",
Request->DataTransferLength, PDODeviceExtension->BlockLength);
-
-    ASSERT(PDODeviceExtension->BlockLength);
-
-    BlockCount = Request->DataTransferLength / PDODeviceExtension->BlockLength;
-
-    // initialize read cmd
-    RtlZeroMemory(&Cmd, sizeof(UFI_READ_WRITE_CMD));
-    Cmd.Code = pCDB->AsByte[0];
-    Cmd.LUN = (PDODeviceExtension->LUN & MAX_LUN);
-    Cmd.ContiguousLogicBlocksByte0 = pCDB->CDB10.TransferBlocksMsb;
-    Cmd.ContiguousLogicBlocksByte1 = pCDB->CDB10.TransferBlocksLsb;
-    Cmd.LogicalBlockByte0 = pCDB->CDB10.LogicalBlockByte0;
-    Cmd.LogicalBlockByte1 = pCDB->CDB10.LogicalBlockByte1;
-    Cmd.LogicalBlockByte2 = pCDB->CDB10.LogicalBlockByte2;
-    Cmd.LogicalBlockByte3 = pCDB->CDB10.LogicalBlockByte3;
-
-    Temp = (Cmd.ContiguousLogicBlocksByte0 << 8 | Cmd.ContiguousLogicBlocksByte1);
-    ASSERT(Temp == BlockCount);
-
-    DPRINT("USBSTOR_SendReadWrite BlockAddress %x%x%x%x BlockCount %lu BlockLength
%lu\n", Cmd.LogicalBlockByte0, Cmd.LogicalBlockByte1, Cmd.LogicalBlockByte2,
Cmd.LogicalBlockByte3, BlockCount, PDODeviceExtension->BlockLength);
-
-    return USBSTOR_SendRequest(DeviceObject, Irp, UFI_READ_WRITE_CMD_LEN,
(PUCHAR)&Cmd, Request->DataTransferLength, (PUCHAR)Request->DataBuffer,
RetryCount);
-}
-
-NTSTATUS
-USBSTOR_SendTestUnit(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN OUT PIRP Irp,
-    IN ULONG RetryCount)
-{
-    UFI_TEST_UNIT_CMD Cmd;
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-    PIO_STACK_LOCATION IoStack;
-    PSCSI_REQUEST_BLOCK Request;
-
-    IoStack = IoGetCurrentIrpStackLocation(Irp);
-    Request = (PSCSI_REQUEST_BLOCK)IoStack->Parameters.Others.Argument1;
-
-    ASSERT(Request->DataTransferLength == 0);
-
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
-    // initialize test unit cmd
-    RtlZeroMemory(&Cmd, sizeof(UFI_TEST_UNIT_CMD));
-    Cmd.Code = SCSIOP_TEST_UNIT_READY;
-    Cmd.LUN = (PDODeviceExtension->LUN & MAX_LUN);
-
-    return USBSTOR_SendRequest(DeviceObject, Irp, UFI_TEST_UNIT_CMD_LEN,
(PUCHAR)&Cmd, 0, NULL, RetryCount);
-}
-
-NTSTATUS
-USBSTOR_SendUnknownRequest(
-    IN PDEVICE_OBJECT DeviceObject,
-    IN OUT PIRP Irp,
-    IN ULONG RetryCount)
-{
-    PPDO_DEVICE_EXTENSION PDODeviceExtension;
-    PIO_STACK_LOCATION IoStack;
-    PSCSI_REQUEST_BLOCK Request;
-    UFI_UNKNOWN_CMD Cmd;
-
-    IoStack = IoGetCurrentIrpStackLocation(Irp);
-    Request = IoStack->Parameters.Others.Argument1;
-    PDODeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
-
-    // check that we're sending to the right LUN
-    ASSERT(Request->Cdb[1] == (PDODeviceExtension->LUN & MAX_LUN));
-    ASSERT(Request->CdbLength <= sizeof(UFI_UNKNOWN_CMD));
-
-    RtlCopyMemory(&Cmd, Request->Cdb, Request->CdbLength);
-
-    return USBSTOR_SendRequest(DeviceObject, Irp, Request->CdbLength,
(PUCHAR)&Cmd, Request->DataTransferLength, Request->DataBuffer, RetryCount);
-}
-
 NTSTATUS
 USBSTOR_HandleExecuteSCSI(
     IN PDEVICE_OBJECT DeviceObject,
@@ -914,71 +545,14 @@ USBSTOR_HandleExecuteSCSI(
     ASSERT(PDODeviceExtension->Common.IsFDO == FALSE);
     IoStack = IoGetCurrentIrpStackLocation(Irp);
-    Request = (PSCSI_REQUEST_BLOCK)IoStack->Parameters.Others.Argument1;
+    Request = IoStack->Parameters.Scsi.Srb;
     pCDB = (PCDB)Request->Cdb;
-    DPRINT("USBSTOR_HandleExecuteSCSI Operation Code %x\n",
pCDB->AsByte[0]);
-
-    if (pCDB->AsByte[0] == SCSIOP_READ_CAPACITY)
-    {
-        ASSERT(Request->DataBuffer);
-
-        DPRINT("SCSIOP_READ_CAPACITY Length %lu\n",
Request->DataTransferLength);
-        Status = USBSTOR_SendCapacity(DeviceObject, Irp, RetryCount);
-    }
-    else if (pCDB->MODE_SENSE.OperationCode == SCSIOP_MODE_SENSE)
-    {
-        DPRINT("SCSIOP_MODE_SENSE DataTransferLength %lu\n",
Request->DataTransferLength);
-        ASSERT(pCDB->MODE_SENSE.AllocationLength == Request->DataTransferLength);
-        ASSERT(Request->DataBuffer);
-
-        Status = USBSTOR_SendModeSense(DeviceObject, Irp, RetryCount);
-    }
-    else if (pCDB->AsByte[0] == SCSIOP_READ_FORMATTED_CAPACITY)
-    {
-        DPRINT("SCSIOP_READ_FORMATTED_CAPACITY DataTransferLength %lu\n",
Request->DataTransferLength);
-
-        Status = USBSTOR_SendFormatCapacity(DeviceObject, Irp, RetryCount);
-    }
-    else if (pCDB->AsByte[0] == SCSIOP_INQUIRY)
-    {
-        DPRINT("SCSIOP_INQUIRY DataTransferLength %lu\n",
Request->DataTransferLength);
-
-        Status = USBSTOR_SendInquiry(DeviceObject, Irp, RetryCount);
-    }
-    else if (pCDB->MODE_SENSE.OperationCode == SCSIOP_READ ||
pCDB->MODE_SENSE.OperationCode == SCSIOP_WRITE)
-    {
-        DPRINT("SCSIOP_READ / SCSIOP_WRITE DataTransferLength %lu\n",
Request->DataTransferLength);
-
-        Status = USBSTOR_SendReadWrite(DeviceObject, Irp, RetryCount);
-    }
-    else if (pCDB->AsByte[0] == SCSIOP_MEDIUM_REMOVAL)
-    {
-        DPRINT("SCSIOP_MEDIUM_REMOVAL\n");
-
-        // just complete the request
-        Request->SrbStatus = SRB_STATUS_SUCCESS;
-        Irp->IoStatus.Status = STATUS_SUCCESS;
-        Irp->IoStatus.Information = Request->DataTransferLength;
-        USBSTOR_QueueTerminateRequest(PDODeviceExtension->LowerDeviceObject, Irp);
-        IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
-        USBSTOR_QueueNextRequest(PDODeviceExtension->LowerDeviceObject);
-
-        return STATUS_SUCCESS;
-    }
-    else if (pCDB->MODE_SENSE.OperationCode == SCSIOP_TEST_UNIT_READY)
-    {
-        DPRINT("SCSIOP_TEST_UNIT_READY\n");
+    DPRINT("USBSTOR_HandleExecuteSCSI Operation Code %x, Length %lu\n",
pCDB->CDB10.OperationCode, Request->DataTransferLength);
-        Status = USBSTOR_SendTestUnit(DeviceObject, Irp, RetryCount);
-    }
-    else
-    {
-        // Unknown request. Simply forward
-        DPRINT1("Forwarding unknown Operation Code %x\n", pCDB->AsByte[0]);
-        Status = USBSTOR_SendUnknownRequest(DeviceObject, Irp, RetryCount);
-    }
+    // check that we're sending to the right LUN
+    ASSERT(pCDB->CDB10.LogicalUnitNumber == (PDODeviceExtension->LUN &
MAX_LUN));
+    Status = USBSTOR_SendRequest(DeviceObject, Irp, Request->CdbLength, (PUCHAR)pCDB,
Request->DataTransferLength, Request->DataBuffer, RetryCount);
     return Status;
 }