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