LXR linux/arch/arm64/include/uapi/asm/sve

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/* Copyright (C) 2017-2018 ARM Limited */
   3
   4/*
   5 * For use by other UAPI headers only.
   6 * Do not make direct use of header or its definitions.
   7 */
   8
   9#ifndef _UAPI__ASM_SVE_CONTEXT_H
  10#define _UAPI__ASM_SVE_CONTEXT_H
  11
  12#include <linux/types.h>
  13
  14#define __SVE_VQ_BYTES          16      /* number of bytes per quadword */
  15
  16#define __SVE_VQ_MIN            1
  17#define __SVE_VQ_MAX            512
  18
  19#define __SVE_VL_MIN            (__SVE_VQ_MIN * __SVE_VQ_BYTES)
  20#define __SVE_VL_MAX            (__SVE_VQ_MAX * __SVE_VQ_BYTES)
  21
  22#define __SVE_NUM_ZREGS         32
  23#define __SVE_NUM_PREGS         16
  24
  25#define __sve_vl_valid(vl)                      \
  26        ((vl) % __SVE_VQ_BYTES == 0 &&          \
  27         (vl) >= __SVE_VL_MIN &&                \
  28         (vl) <= __SVE_VL_MAX)
  29
  30#define __sve_vq_from_vl(vl)    ((vl) / __SVE_VQ_BYTES)
  31#define __sve_vl_from_vq(vq)    ((vq) * __SVE_VQ_BYTES)
  32
  33#define __SVE_ZREG_SIZE(vq)     ((__u32)(vq) * __SVE_VQ_BYTES)
  34#define __SVE_PREG_SIZE(vq)     ((__u32)(vq) * (__SVE_VQ_BYTES / 8))
  35#define __SVE_FFR_SIZE(vq)      __SVE_PREG_SIZE(vq)
  36
  37#define __SVE_ZREGS_OFFSET      0
  38#define __SVE_ZREG_OFFSET(vq, n) \
  39        (__SVE_ZREGS_OFFSET + __SVE_ZREG_SIZE(vq) * (n))
  40#define __SVE_ZREGS_SIZE(vq) \
  41        (__SVE_ZREG_OFFSET(vq, __SVE_NUM_ZREGS) - __SVE_ZREGS_OFFSET)
  42
  43#define __SVE_PREGS_OFFSET(vq) \
  44        (__SVE_ZREGS_OFFSET + __SVE_ZREGS_SIZE(vq))
  45#define __SVE_PREG_OFFSET(vq, n) \
  46        (__SVE_PREGS_OFFSET(vq) + __SVE_PREG_SIZE(vq) * (n))
  47#define __SVE_PREGS_SIZE(vq) \
  48        (__SVE_PREG_OFFSET(vq, __SVE_NUM_PREGS) - __SVE_PREGS_OFFSET(vq))
  49
  50#define __SVE_FFR_OFFSET(vq) \
  51        (__SVE_PREGS_OFFSET(vq) + __SVE_PREGS_SIZE(vq))
  52
  53#endif /* ! _UAPI__ASM_SVE_CONTEXT_H */
  54