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authorSeth Jennings <sjenning@linux.vnet.ibm.com>2012-07-19 16:42:40 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2012-08-01 11:47:56 +0200
commit0e16aafb12046e12effbdaab179fbe1a38427ba9 (patch)
tree743ce60ba95bf9a5ee3cff7f664dd99a7498473e /crypto/842.c
parentpowerpc/crypto: add compression support to arch vec (diff)
downloadlinux-0e16aafb12046e12effbdaab179fbe1a38427ba9.tar.xz
linux-0e16aafb12046e12effbdaab179fbe1a38427ba9.zip
powerpc/crypto: add 842 hardware compression driver
This patch adds the driver for interacting with the 842 compression accelerator on IBM Power7+ systems. The device is a child of the Platform Facilities Option (PFO) and shows up as a child of the IBM VIO bus. The compression/decompression API takes the same arguments as existing compression methods like lzo and deflate. The 842 hardware operates on 4K hardware pages and the driver breaks up input on 4K boundaries to submit it to the hardware accelerator. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/842.c')
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