ceph/src/arch/ppc.c

   1 /* Copyright (C) 2017 International Business Machines Corp.
   2  * All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version
   7  * 2 of the License, or (at your option) any later version.
   8  */
   9 #include "arch/ppc.h"
  10 #include "arch/probe.h"
  11
  12 /* flags we export */
  13 int ceph_arch_ppc_crc32 = 0;
  14
  15 #include <stdio.h>
  16
  17 #ifdef HAVE_PPC64LE
  18 #include <sys/auxv.h>
  19 #include <asm/cputable.h>
  20 #endif /* HAVE_PPC64LE */
  21
  22 #ifndef PPC_FEATURE2_VEC_CRYPTO
  23 #define PPC_FEATURE2_VEC_CRYPTO         0x02000000
  24 #endif
  25
  26 #ifndef AT_HWCAP2
  27 #define AT_HWCAP2       26
  28 #endif
  29
  30 int ceph_arch_ppc_probe(void)
  31 {
  32   ceph_arch_ppc_crc32 = 0;
  33
  34 #ifdef HAVE_PPC64LE
  35   if (getauxval(AT_HWCAP2) & PPC_FEATURE2_VEC_CRYPTO) ceph_arch_ppc_crc32 = 1;
  36 #endif /* HAVE_PPC64LE */
  37
  38   return 0;
  39 }
  40