arch/powerpc/lib/xor_vmx_glue.c

   1 /*
   2  * Altivec XOR operations
   3  *
   4  * Copyright 2017 IBM Corp.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #include <linux/preempt.h>
  13 #include <linux/export.h>
  14 #include <linux/sched.h>
  15 #include <asm/switch_to.h>
  16 #include <asm/xor_altivec.h>
  17 #include "xor_vmx.h"
  18
  19 void xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
  20                    unsigned long *v2_in)
  21 {
  22         preempt_disable();
  23         enable_kernel_altivec();
  24         __xor_altivec_2(bytes, v1_in, v2_in);
  25         disable_kernel_altivec();
  26         preempt_enable();
  27 }
  28 EXPORT_SYMBOL(xor_altivec_2);
  29
  30 void xor_altivec_3(unsigned long bytes,  unsigned long *v1_in,
  31                    unsigned long *v2_in, unsigned long *v3_in)
  32 {
  33         preempt_disable();
  34         enable_kernel_altivec();
  35         __xor_altivec_3(bytes, v1_in, v2_in, v3_in);
  36         disable_kernel_altivec();
  37         preempt_enable();
  38 }
  39 EXPORT_SYMBOL(xor_altivec_3);
  40
  41 void xor_altivec_4(unsigned long bytes,  unsigned long *v1_in,
  42                    unsigned long *v2_in, unsigned long *v3_in,
  43                    unsigned long *v4_in)
  44 {
  45         preempt_disable();
  46         enable_kernel_altivec();
  47         __xor_altivec_4(bytes, v1_in, v2_in, v3_in, v4_in);
  48         disable_kernel_altivec();
  49         preempt_enable();
  50 }
  51 EXPORT_SYMBOL(xor_altivec_4);
  52
  53 void xor_altivec_5(unsigned long bytes,  unsigned long *v1_in,
  54                    unsigned long *v2_in, unsigned long *v3_in,
  55                    unsigned long *v4_in, unsigned long *v5_in)
  56 {
  57         preempt_disable();
  58         enable_kernel_altivec();
  59         __xor_altivec_5(bytes, v1_in, v2_in, v3_in, v4_in, v5_in);
  60         disable_kernel_altivec();
  61         preempt_enable();
  62 }
  63 EXPORT_SYMBOL(xor_altivec_5);