MFSH VIRT2PHYS

Convert virtual to physical address. Translate the address of a data buffer into a physical address.

Syntax
int far pascal MFSH_VIRT2PHYS(ulVirtAddr, pulPhysAddr)

Parameters

 * ulVirtAddr: contains the virtual address of the data area.
 * PhysAddr: is a pointer to a double word in which the helper returns the physical address of the data area.

Returns
If no error is detected, a zero error code is returned. If an error is detected, the following error is returned:
 * ERROR_PROTECTION_VIOLATION: the supplied address is invalid.

Sample
unsigned long ulVirtAddr; unsigned long far * pulPhysAddr; int far pascal MFSH_VIRT2PHYS(ulVirtAddr, pulPhysAddr)

Remarks
This helper is for use by a mini-FSD with an imbedded device driver. It is the same as the standard device driver helper VIRTTOPHYS.