dac960.c

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}


/*
  DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
*/

static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
  DAC960_V2_CommandMailbox_T *NextCommandMailbox =
    Controller->V2.NextCommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
  if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
      Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
    DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
  Controller->V2.PreviousCommandMailbox2 =
    Controller->V2.PreviousCommandMailbox1;
  Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
  if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
    NextCommandMailbox = Controller->V2.FirstCommandMailbox;
  Controller->V2.NextCommandMailbox = NextCommandMailbox;
}


/*
  DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
  Controllers with Dual Mode Firmware.
*/

static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
    Controller->V1.NextCommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
    DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
  Controller->V1.PreviousCommandMailbox2 =
    Controller->V1.PreviousCommandMailbox1;
  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
  Controller->V1.NextCommandMailbox = NextCommandMailbox;
}


/*
  DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
  Controllers with Single Mode Firmware.
*/

static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
    Controller->V1.NextCommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
    DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
  Controller->V1.PreviousCommandMailbox2 =
    Controller->V1.PreviousCommandMailbox1;
  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
  Controller->V1.NextCommandMailbox = NextCommandMailbox;
}


/*
  DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
  Controllers with Dual Mode Firmware.
*/

static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
    Controller->V1.NextCommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
    DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
  Controller->V1.PreviousCommandMailbox2 =
    Controller->V1.PreviousCommandMailbox1;
  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
  Controller->V1.NextCommandMailbox = NextCommandMailbox;
}


/*
  DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
  Controllers with Single Mode Firmware.
*/

static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
    Controller->V1.NextCommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
    DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
  Controller->V1.PreviousCommandMailbox2 =
    Controller->V1.PreviousCommandMailbox1;
  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
  Controller->V1.NextCommandMailbox = NextCommandMailbox;
}


/*
  DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
*/

static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
    udelay(1);
  DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
  DAC960_PD_NewCommand(ControllerBaseAddress);
}


/*
  DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
*/

static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  void *ControllerBaseAddress = Controller->BaseAddress;
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
  switch (CommandMailbox->Common.CommandOpcode)
    {
    case DAC960_V1_Enquiry:
      CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
      break;
    case DAC960_V1_GetDeviceState:
      CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
      break;
    case DAC960_V1_Read:
      CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
      break;
    case DAC960_V1_Write:
      CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
      break;
    case DAC960_V1_ReadWithScatterGather:
      CommandMailbox->Common.CommandOpcode =
	DAC960_V1_ReadWithScatterGather_Old;
      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
      break;
    case DAC960_V1_WriteWithScatterGather:
      CommandMailbox->Common.CommandOpcode =
	DAC960_V1_WriteWithScatterGather_Old;
      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
      break;
    default:
      break;
    }
  while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
    udelay(1);
  DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
  DAC960_PD_NewCommand(ControllerBaseAddress);
}


/*
  DAC960_ExecuteCommand executes Command and waits for completion.
*/

static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
{
  DAC960_Controller_T *Controller = Command->Controller;
  DECLARE_COMPLETION(Completion);
  unsigned long ProcessorFlags;
  Command->Completion = &Completion;
  DAC960_AcquireControllerLock(Controller, &ProcessorFlags);
  DAC960_QueueCommand(Command);
  DAC960_ReleaseControllerLock(Controller, &ProcessorFlags);
  if (in_interrupt()) return;
  wait_for_completion(&Completion);
}


/*
  DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
  Command and waits for completion.  It returns true on success and false
  on failure.
*/

static boolean DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
				      DAC960_V1_CommandOpcode_T CommandOpcode,
				      void *DataPointer)
{
  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandStatus_T CommandStatus;
  DAC960_V1_ClearCommand(Command);
  Command->CommandType = DAC960_ImmediateCommand;
  CommandMailbox->Type3.CommandOpcode = CommandOpcode;
  CommandMailbox->Type3.BusAddress = Virtual_to_Bus32(DataPointer);
  DAC960_ExecuteCommand(Command);
  CommandStatus = Command->V1.CommandStatus;
  DAC960_DeallocateCommand(Command);
  return (CommandStatus == DAC960_V1_NormalCompletion);
}


/*
  DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
  Command and waits for completion.  It returns true on success and false
  on failure.
*/

static boolean DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
				       DAC960_V1_CommandOpcode_T CommandOpcode,
				       unsigned char CommandOpcode2,
				       void *DataPointer)
{
  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandStatus_T CommandStatus;
  DAC960_V1_ClearCommand(Command);
  Command->CommandType = DAC960_ImmediateCommand;
  CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
  CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
  CommandMailbox->Type3B.BusAddress = Virtual_to_Bus32(DataPointer);
  DAC960_ExecuteCommand(Command);
  CommandStatus = Command->V1.CommandStatus;
  DAC960_DeallocateCommand(Command);
  return (CommandStatus == DAC960_V1_NormalCompletion);
}


/*
  DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
  Command and waits for completion.  It returns true on success and false
  on failure.
*/

static boolean DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
				       DAC960_V1_CommandOpcode_T CommandOpcode,
				       unsigned char Channel,
				       unsigned char TargetID,
				       void *DataPointer)
{
  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
  DAC960_V1_CommandStatus_T CommandStatus;
  DAC960_V1_ClearCommand(Command);
  Command->CommandType = DAC960_ImmediateCommand;
  CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
  CommandMailbox->Type3D.Channel = Channel;
  CommandMailbox->Type3D.TargetID = TargetID;
  CommandMailbox->Type3D.BusAddress = Virtual_to_Bus32(DataPointer);
  DAC960_ExecuteCommand(Command);
  CommandStatus = Command->V1.CommandStatus;
  DAC960_DeallocateCommand(Command);
  return (CommandStatus == DAC960_V1_NormalCompletion);
}


/*
  DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
  Reading IOCTL Command and waits for completion.  It returns true on success
  and false on failure.
*/

static boolean DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller,
				     DAC960_V2_IOCTL_Opcode_T IOCTL_Opcode,
				     void *DataPointer,
				     unsigned int DataByteCount)
{
  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
  DAC960_V2_CommandStatus_T CommandStatus;
  DAC960_V2_ClearCommand(Command);
  Command->CommandType = DAC960_ImmediateCommand;
  CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
  CommandMailbox->Common.CommandControlBits
			.DataTransferControllerToHost = true;
  CommandMailbox->Common.CommandControlBits
			.NoAutoRequestSense = true;
  CommandMailbox->Common.DataTransferSize = DataByteCount;
  CommandMailbox->Common.IOCTL_Opcode = IOCTL_Opcode;
  CommandMailbox->Common.DataTransferMemoryAddress
			.ScatterGatherSegments[0]
			.SegmentDataPointer =
    Virtual_to_Bus64(DataPointer);
  CommandMailbox->Common.DataTransferMemoryAddress
			.ScatterGatherSegments[0]
			.SegmentByteCount =
    CommandMailbox->Common.DataTransferSize;
  DAC960_ExecuteCommand(Command);
  CommandStatus = Command->V2.CommandStatus;
  DAC960_DeallocateCommand(Command);
  return (CommandStatus == DAC960_V2_NormalCompletion);
}


/*
  DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
  Information Reading IOCTL Command and waits for completion.  It returns
  true on success and false on failure.
*/

static boolean DAC960_V2_ControllerInfo(DAC960_Controller_T *Controller,