From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760713Ab2CUVjN (ORCPT ); Wed, 21 Mar 2012 17:39:13 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:35579 "EHLO e36.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760357Ab2CUVil (ORCPT ); Wed, 21 Mar 2012 17:38:41 -0400 Message-ID: <1332365949.3858.32.camel@key-ThinkPad-W510> Subject: [PATCH 05/17] pseries: Enabled the PFO-based RNG accelerator From: Kent Yoder To: linux-kernel@vger.kernel.org Cc: linux-crypto@vger.kernel.org, rcj@linux.vnet.ibm.com, benh@kernel.crashing.org, linuxppc-dev@lists.ozlabs.org Date: Wed, 21 Mar 2012 16:39:09 -0500 In-Reply-To: <1332365297.3858.5.camel@key-ThinkPad-W510> References: <1332365297.3858.5.camel@key-ThinkPad-W510> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.2- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12032121-3352-0000-0000-0000037BC635 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Robert Jennings This patch adds the cas bits to advertise support for the Platform Facilities Option (PFO) based random number generator accerator. The pseries-rng driver provides support for this hardware feature. Signed-off-by: Robert Jennings Signed-off-by: Kent Yoder --- arch/powerpc/kernel/prom_init.c | 13 ++++++++++++- 1 files changed, 12 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index eca626e..6691077 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -710,6 +710,12 @@ static void __init early_cmdline_parse(void) #define OV5_XCMO 0x00 #endif #define OV5_TYPE1_AFFINITY 0x80 /* Type 1 NUMA affinity */ +#if defined(CONFIG_HW_RANDOM_PSERIES) || \ + defined(CONFIG_HW_RANDOM_PSERIES_MODULE) +#define OV5_PFO_HW_RNG 0x80 /* PFO Random Number Generator */ +#else +#define OV5_PFO_HW_RNG 0x00 +#endif /* Option Vector 6: IBM PAPR hints */ #define OV6_LINUX 0x02 /* Linux is our OS */ @@ -757,7 +763,7 @@ static unsigned char ibm_architecture_vec[] = { 0, /* don't halt */ /* option vector 5: PAPR/OF options */ - 13 - 2, /* length */ + 18 - 2, /* length */ 0, /* don't ignore, don't halt */ OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY | OV5_DONATE_DEDICATE_CPU | OV5_MSI, @@ -773,6 +779,11 @@ static unsigned char ibm_architecture_vec[] = { */ #define IBM_ARCH_VEC_NRCORES_OFFSET 100 W(NR_CPUS), /* number of cores supported */ + 0, + 0, + 0, + 0, + OV5_PFO_HW_RNG, /* option vector 6: IBM PAPR hints */ 4 - 2, /* length */ -- 1.7.1