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PMAP_MAP(9)		    Kernel Developer's Manual		     PMAP_MAP(9)

NAME
     pmap_map  --  map a physical memory range into kernel virtual address (KVA)
     space

SYNOPSIS
     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/pmap.h>

     vm_offset_t
     pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot);

DESCRIPTION
     The pmap_map() function maps a range of physical addresses into kernel vir-
     tual address (KVA) space, from start to end, with protection bits prot.

     The value passed in *virt is treated as a hint for the virtual  address  of
     the beginning of the mapping.

IMPLEMENTATION NOTES
     The  prot	argument  is  currently ignored by machine-dependent implementa-
     tions.

     Architectures which can support a direct mapped physical to virtual  region
     can  return  the  appropriate address within that region, leaving *virt un-
     changed.

RETURN VALUES
     The pmap_map() function returns the virtual address of the beginning of the
     mapping, if the mapping was successfully made; *virt will also  be  updated
     with the first usable address after the mapped region.

     If the function is unsuccessful, NULL is returned.

SEE ALSO
     pmap(9)

AUTHORS
     This manual page was written by Bruce M Simpson <bms@spc.org>.

FreeBSD ports 15.quarterly	  July 21, 2003 		     PMAP_MAP(9)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=pmap_map&sektion=9&manpath=FreeBSD+15.1-RELEASE+and+Ports.quarterly>

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