tree f400e648aa7da5f5e0654b00fcf6be16603a597e
parent fff75eb2a08c2ac96404a2d79685668f3cf5a7a3
author Tom Hromatka <tom.hromatka@oracle.com> 1524761648 -0600
committer David S. Miller <davem@davemloft.net> 1528223095 -0700

char: sparc64: Add privileged ADI driver

SPARC M7 and newer processors utilize ADI to version and
protect memory.  This driver is capable of reading/writing
ADI/MCD versions from privileged user space processes.
Addresses in the adi file are mapped linearly to physical
memory at a ratio of 1:adi_blksz.  Thus, a read (or write)
of offset K in the file operates upon the ADI version at
physical address K * adi_blksz.  The version information
is encoded as one version per byte.  Intended consumers
are makedumpfile and crash.

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>