SVR5

drv_munmap(D3)

drv_munmap -- release user mapping of kernel virtual or physical addresses

Synopsis

   #include <sys/types.h>
   #include <sys/mman.h>
   #include <sys/ddi.h>
   
   void drv_munmap(vaddr_t uvaddr, size_t len)

Description

drvmunmap releases a mapping acquired by drv_mmap(D3), which sets up a user mapping to a range of kernel virtual or physical addresses.

Arguments

uvaddrp: User address at which an object is mapped.
len: Size of the mapping in bytes.

Return values

None.

Usage

The uvaddr parameter should contain the address returned from the drv_mmap(D3) function in the *uvaddrp argument. The len parameter should contain the same value as was passed to drv_mmap.

Context and synchronization

User context.

Hardware applicability

All

Version applicability

ddi: 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp

Differences between versions

While the drv_munmap( ) function is included in the DDI 8 definition, the corresponding drv_mmap(D3) function is withdrawn from DDI 8 so there is no occasion to use this function in DDI 8 drivers.

References

drv_mmap(D3)