lkml.org 
[lkml]   [2012]   [Apr]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Subject[PATCH v2 05/17] pseries: Enabled the PFO-based RNG accelerator
    From
    Date
    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 <rcj@linux.vnet.ibm.com>
    Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
    ---
    arch/powerpc/kernel/prom_init.c | 8 +++++++-
    1 files changed, 7 insertions(+), 1 deletions(-)

    diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
    index 9986027..26f6317 100644
    --- a/arch/powerpc/kernel/prom_init.c
    +++ b/arch/powerpc/kernel/prom_init.c
    @@ -701,6 +701,7 @@ static void __init early_cmdline_parse(void)
    #define OV5_XCMO 0x00
    #endif
    #define OV5_TYPE1_AFFINITY 0x80 /* Type 1 NUMA affinity */
    +#define OV5_PFO_HW_RNG 0x80 /* PFO Random Number Generator */

    /* Option Vector 6: IBM PAPR hints */
    #define OV6_LINUX 0x02 /* Linux is our OS */
    @@ -748,7 +749,7 @@ 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,
    @@ -764,6 +765,11 @@ 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



    \
     
     \ /
      Last update: 2012-04-10 17:11    [W:0.024 / U:59.040 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site