LXR linux/arch/arm/include/asm/vfp.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * arch/arm/include/asm/vfp.h
   4 *
   5 * VFP register definitions.
   6 * First, the standard VFP set.
   7 */
   8
   9#ifndef __ASM_VFP_H
  10#define __ASM_VFP_H
  11
  12#ifndef CONFIG_AS_VFP_VMRS_FPINST
  13#define FPSID                   cr0
  14#define FPSCR                   cr1
  15#define MVFR1                   cr6
  16#define MVFR0                   cr7
  17#define FPEXC                   cr8
  18#define FPINST                  cr9
  19#define FPINST2                 cr10
  20#endif
  21
  22/* FPSID bits */
  23#define FPSID_IMPLEMENTER_BIT   (24)
  24#define FPSID_IMPLEMENTER_MASK  (0xff << FPSID_IMPLEMENTER_BIT)
  25#define FPSID_SOFTWARE          (1<<23)
  26#define FPSID_FORMAT_BIT        (21)
  27#define FPSID_FORMAT_MASK       (0x3  << FPSID_FORMAT_BIT)
  28#define FPSID_NODOUBLE          (1<<20)
  29#define FPSID_ARCH_BIT          (16)
  30#define FPSID_ARCH_MASK         (0xF  << FPSID_ARCH_BIT)
  31#define FPSID_CPUID_ARCH_MASK   (0x7F  << FPSID_ARCH_BIT)
  32#define FPSID_PART_BIT          (8)
  33#define FPSID_PART_MASK         (0xFF << FPSID_PART_BIT)
  34#define FPSID_VARIANT_BIT       (4)
  35#define FPSID_VARIANT_MASK      (0xF  << FPSID_VARIANT_BIT)
  36#define FPSID_REV_BIT           (0)
  37#define FPSID_REV_MASK          (0xF  << FPSID_REV_BIT)
  38
  39/* FPEXC bits */
  40#define FPEXC_EX                (1 << 31)
  41#define FPEXC_EN                (1 << 30)
  42#define FPEXC_DEX               (1 << 29)
  43#define FPEXC_FP2V              (1 << 28)
  44#define FPEXC_VV                (1 << 27)
  45#define FPEXC_TFV               (1 << 26)
  46#define FPEXC_LENGTH_BIT        (8)
  47#define FPEXC_LENGTH_MASK       (7 << FPEXC_LENGTH_BIT)
  48#define FPEXC_IDF               (1 << 7)
  49#define FPEXC_IXF               (1 << 4)
  50#define FPEXC_UFF               (1 << 3)
  51#define FPEXC_OFF               (1 << 2)
  52#define FPEXC_DZF               (1 << 1)
  53#define FPEXC_IOF               (1 << 0)
  54#define FPEXC_TRAP_MASK         (FPEXC_IDF|FPEXC_IXF|FPEXC_UFF|FPEXC_OFF|FPEXC_DZF|FPEXC_IOF)
  55
  56/* FPSCR bits */
  57#define FPSCR_DEFAULT_NAN       (1<<25)
  58#define FPSCR_FLUSHTOZERO       (1<<24)
  59#define FPSCR_ROUND_NEAREST     (0<<22)
  60#define FPSCR_ROUND_PLUSINF     (1<<22)
  61#define FPSCR_ROUND_MINUSINF    (2<<22)
  62#define FPSCR_ROUND_TOZERO      (3<<22)
  63#define FPSCR_RMODE_BIT         (22)
  64#define FPSCR_RMODE_MASK        (3 << FPSCR_RMODE_BIT)
  65#define FPSCR_STRIDE_BIT        (20)
  66#define FPSCR_STRIDE_MASK       (3 << FPSCR_STRIDE_BIT)
  67#define FPSCR_LENGTH_BIT        (16)
  68#define FPSCR_LENGTH_MASK       (7 << FPSCR_LENGTH_BIT)
  69#define FPSCR_IOE               (1<<8)
  70#define FPSCR_DZE               (1<<9)
  71#define FPSCR_OFE               (1<<10)
  72#define FPSCR_UFE               (1<<11)
  73#define FPSCR_IXE               (1<<12)
  74#define FPSCR_IDE               (1<<15)
  75#define FPSCR_IOC               (1<<0)
  76#define FPSCR_DZC               (1<<1)
  77#define FPSCR_OFC               (1<<2)
  78#define FPSCR_UFC               (1<<3)
  79#define FPSCR_IXC               (1<<4)
  80#define FPSCR_IDC               (1<<7)
  81
  82/* MVFR0 bits */
  83#define MVFR0_A_SIMD_BIT        (0)
  84#define MVFR0_A_SIMD_MASK       (0xf << MVFR0_A_SIMD_BIT)
  85#define MVFR0_SP_BIT            (4)
  86#define MVFR0_SP_MASK           (0xf << MVFR0_SP_BIT)
  87#define MVFR0_DP_BIT            (8)
  88#define MVFR0_DP_MASK           (0xf << MVFR0_DP_BIT)
  89
  90/* Bit patterns for decoding the packaged operation descriptors */
  91#define VFPOPDESC_LENGTH_BIT    (9)
  92#define VFPOPDESC_LENGTH_MASK   (0x07 << VFPOPDESC_LENGTH_BIT)
  93#define VFPOPDESC_UNUSED_BIT    (24)
  94#define VFPOPDESC_UNUSED_MASK   (0xFF << VFPOPDESC_UNUSED_BIT)
  95#define VFPOPDESC_OPDESC_MASK   (~(VFPOPDESC_LENGTH_MASK | VFPOPDESC_UNUSED_MASK))
  96
  97#ifndef __ASSEMBLY__
  98void vfp_disable(void);
  99#endif
 100
 101#endif /* __ASM_VFP_H */
 102