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StorPortWriteRegisterBufferUlong64 macro (storport.h)

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This StorPortWriteRegisterBufferUlong64 routine writes a number of ULONG64 values from a the specified 64-bit register address.

Syntax

void StorPortWriteRegisterBufferUlong64(
   h,
   r,
   b,
   c
);

Parameters

h

A pointer to the hardware device extension. This is a per HBA storage area that the port driver allocates and initializes on behalf of the miniport driver. Miniport drivers usually store HBA-specific information in this extension, such as the state of the HBA and the mapped access ranges for the HBA. This area is available to the miniport driver immediately after the miniport driver calls StorPortInitialize. The port driver frees this memory when it removes the device.

r

Pointer to the register where the data is written to. The given Register must be in a mapped memory-space range returned by [**StorPortGetDeviceBase**](nf-storport-storportgetdevicebase.md).

b

Pointer to the buffer to write the ULONG64 values from.

c

Specifies the number of data values to write. Each data item has a size of sizeof(ULONG64).

Return value

None

Remarks

The StorPortWriteRegisterBufferUlong64 routine is only available on the 64-bit version of Windows.

Requirements

Requirement Value
Minimum supported client Windows 8
Target Platform Universal
Header storport.h (include Storport.h)

See also

StorPortReadRegisterBufferUlong64