MICROSOFT STORPORT DRIVERS FOR WINDOWS

If the adapter and a logical unit are both ready to receive a request, the system calls the miniport driver’s HwStorBuildIo and HwStorStartIo routines in that order. The StorPortFreeContiguousMemorySpecifyCache routine deallocates a range of noncached memory in the nonpaged portion of the system address space. StorPortResume Resume a paused adapter. These communications are handled by the following eight routines, which allow the miniport driver to signal when either the logical unit or the adapter is paused or busy. Afterwards, the port driver calls HwStorInitialize to initialize the adapter. This interface is designed for miniport drivers that currently have no strict association with the physical hardware.

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Storport’s Interface with Storport Miniport Drivers. Our new feedback system is built on GitHub Issues. The Microsoft storport routine increments the activation reference count on the specified component of a storage device.

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The StorPortReadRegisterUlong64 routine reads a bit value from a specified bit register address. Our new feedback system is built on GitHub Issues. Choose the type you’d like to provide: The HwStorTracingEnabled callback routine enables the Storport to mlcrosoft a miniport microsoft storport event tracing is microsoft storport.

The StorPortDeviceBusy routine notifies the port driver that the specified logical unit is currently busy, handling outstanding requests. HwInitialize Stoprort to the microsoft storport driver’s HwStorInitialize routine, which is a required entry point for all miniport drivers. A miniport driver can use its LU extensions as storage for driver-determined logical-unit information about peripherals on microsoft storport bus.

The StorPortDeviceReady routine notifies the port driver microsoft storport the indicated logical unit is ready to handle new requests. The HwStorFindAdapter routine uses the supplied configuration to determine whether a specific HBA is supported and, microsoft storport it is, to return configuration information about that adapter. Without extended SRB support, each logical unit can have a stor;ort of outstanding requests.

When limit set for the microsoft storport depth is reached, Storport holds further requests to that logical unit until the number of microsoft storport requests to the unit drops below the queue maximum. Pointer to the miniport driver’s HwStorAdapterControl routine. Although SCSIPort re-initializes the device extension whenever the adapter is stopped and thus subsequent calls to HwScsiFindAdapter receive a zeroed-out device extension, Storport does not follow that model.

History of Storport | Microsoft Docs

The HwStorFindAdapter routine uses the supplied configuration to determine whether a specific HBA microsoft storport supported and, if it is, to return configuration information about that adapter. Mirosoft the size, in bytes, required by the miniport driver for its per-adapter device extension. HwInterrupt Pointer to the miniport driver’s HwStorInterrupt routine, which is a required entry point for all miniport drivers. Certain microsoft storport apply, however.

The Storport driver ignores this microsoft storport, because miniport drivers that work with the Storport driver must support PnP. Otherwise, the queue depth is only limited by available system resources or the capabilities of the adapter. For example, an adapter with 55 etorport units attached to it with microsoft storport queue depth of could post up to a maximum of 14, 55 x requests at a time.

_HW_INITIALIZATION_DATA structure

This site microsoft storport cookies for analytics, personalized content and ads. Conversely, a physical miniport xtorport uses only Storport APIs. The ETW parameters are expressed as two name-value pairs. Microsoft storport about this change in our blog post.

StorPortDeviceBusy The StorPortDeviceBusy routine notifies the port driver that the specified logical unit is currently busy, handling outstanding requests.

Storport Driver Miniport Routines (Windows Drivers)

The miniport can log four general purpose ETW parameters. The StorPortDelayExecution function delays the current thread by the given amount of time, in microseconds. Used to adjust the Microsoft storport of the adapter depending on its current configuration. StorPortResume Resume microsoft storport paused adapter. The miniport driver is notified to start a unit or handle a power state transition for a unit device.

microsoft storport A miniport driver’s HwStorAdapterControl routine is called to perform synchronous operations to control the state or behavior of an adapter, such as stopping or restarting the HBA for power management.

The miniport driver uses the StorPortNotification routine to notify the Storport driver microsoft storport certain events and conditions.

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