kernel/linux.git/arch/powerpc/include/asm/icswx.h, branch linux-4.4.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-4.4.y2016-09-15T06:27:49+00:00crypto: nx-842 - Mask XERS0 bit in return value2016-09-15T06:27:49+00:00Haren Myneniharen@linux.vnet.ibm.com2016-08-30T04:34:57+00:00urn:sha1:4259821921698f26e4a2c67c72f00db4e48833b0
[ Upstream commit 6333ed8f26cf77311088d2e2b7cf16d8480bcbb2 ]
NX842 coprocessor sets 3rd bit in CR register with XER[S0] which is
nothing to do with NX request. Since this bit can be set with other
valuable return status, mast this bit.
One of other bits (INITIATED, BUSY or REJECTED) will be returned for
any given NX request.
Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
powerpc: Add ICSWX instruction2015-05-11T07:06:39+00:00Dan Streetmanddstreet@ieee.org2015-05-07T17:49:13+00:00urn:sha1:edc424f8cd84bbae530d8a9f86caf1923606fb24
Add the asm ICSWX and ICSWEPX opcodes. Add definitions for the
Coprocessor Request structures needed to use the icswx calls to
coprocessors. Add icswx() function to perform the ICSWX asm
using the provided Coprocessor Command Word value and
Coprocessor Request Block structure.
This is required for communication with the NX-842 coprocessor on
a PowerNV system.
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>