HwScsiDisableInterruptsCallback routine
HwScsiDisableInterruptsCallback is called after a miniport driver's HwScsiEnableInterruptsCallback routine calls ScsiPortNotification with the NotificationTypeCallDisableInterrupts. Miniport drivers of HBAs that require interrupt processing that takes more than 50 microseconds in the ISR should have a pair of HwScsi..InterruptsCallback routines.
Note The SCSI port driver and SCSI miniport driver models may be altered or unavailable in the future. Instead, we recommend using the Storport driver and Storport miniport driver models.
Syntax
BOOLEAN HwScsiDisableInterruptsCallback(
_In_ PVOID DeviceExtension
);
Parameters
- DeviceExtension [in]
Points to the miniport driver's per-HBA storage area.
Return value
HwScsiDisableInterruptsCallback returns TRUE if the operation succeeded and FALSE if the operation failed.
Remarks
All system interrupts with a higher hardware priority than the HBA's are enabled when the HwScsiDisableInterruptsCallback routine is called. Consequently, a HwScsiDisableInterruptsCallback routine should be optimized to run as quickly as possible.
HwScsiDisableInterruptsCallback is responsible for reenabling interrupts on the HBA and then returning control.
For more information about the HwScsiDisableInterruptsCallback routine, see SCSI Miniport Driver's HwScsiDisableInterruptsCallback Routine.
Requirements
Target platform |
Desktop |
Header |
Miniport.h (include Scsi.h) |
See also
HwScsiEnableInterruptsCallback