linux-kernel - [PATCH 2/4] powerpc/crypto: add compression support to arch vec

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Date:	Thu, 19 Jul 2012 09:42:39 -0500
From:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Paul Mackerras <paulus@...ba.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Kent Yoder <key@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-crypto@...r.kernel.org
Subject: [PATCH 2/4] powerpc/crypto: add compression support to arch vec

This patch enables compression engine support in the
architecture vector.  This causes the Power hypervisor
to allow access to the nx comrpession accelerator.

Signed-off-by: Seth Jennings <sjenning@...ux.vnet.ibm.com>
---
 arch/powerpc/kernel/prom_init.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 0794a30..9ec5e55 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -705,6 +705,7 @@ static void __init early_cmdline_parse(void)
 #endif
 #define OV5_TYPE1_AFFINITY	0x80	/* Type 1 NUMA affinity */
 #define OV5_PFO_HW_RNG		0x80	/* PFO Random Number Generator */
+#define OV5_PFO_HW_842		0x40	/* PFO Compression Accelerator */
 #define OV5_PFO_HW_ENCR		0x20	/* PFO Encryption Accelerator */
 
 /* Option Vector 6: IBM PAPR hints */
@@ -774,8 +775,7 @@ static unsigned char ibm_architecture_vec[] = {
 	0,
 	0,
 	0,
-	OV5_PFO_HW_RNG | OV5_PFO_HW_ENCR,
-
+	OV5_PFO_HW_RNG | OV5_PFO_HW_ENCR | OV5_PFO_HW_842,
 	/* option vector 6: IBM PAPR hints */
 	4 - 2,				/* length */
 	0,
-- 
1.7.9.5

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