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| author | Amit Daniel Kachhap <amit.kachhap@arm.com> | 2022-11-17 08:28:22 +0300 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-11-28 14:57:32 +0300 |
| commit | c00a19c8b143db31d660ee965e6a6f782ef090ff (patch) | |
| tree | a86521291809833382af989671c895bd85b6c3a6 /arch/arm/include/uapi | |
| parent | 74c344e6f153dd9ae97c99ad751723e4030d4af9 (diff) | |
| download | linux-c00a19c8b143db31d660ee965e6a6f782ef090ff.tar.xz | |
ARM: 9268/1: vfp: Add hwcap FPHP and ASIMDHP for FEAT_FP16
Floating point half-precision (FPHP) and Advanced SIMD half-precision
(ASIMDHP) are VFP features (FEAT_FP16) represented by MVFR1 identification register. These capabilities can optionally exist with VFPv3 and mandatory with VFPv4. Both these new features exist for Armv8 architecture in AArch32 state.
These hwcaps may be useful for the userspace to add conditional check
before trying to use FEAT_FP16 feature specific instructions.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/include/uapi')
| -rw-r--r-- | arch/arm/include/uapi/asm/hwcap.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/uapi/asm/hwcap.h b/arch/arm/include/uapi/asm/hwcap.h index 990199d8b7c6..8b6f690f0ac4 100644 --- a/arch/arm/include/uapi/asm/hwcap.h +++ b/arch/arm/include/uapi/asm/hwcap.h @@ -28,6 +28,8 @@ #define HWCAP_IDIV (HWCAP_IDIVA | HWCAP_IDIVT) #define HWCAP_LPAE (1 << 20) #define HWCAP_EVTSTRM (1 << 21) +#define HWCAP_FPHP (1 << 22) +#define HWCAP_ASIMDHP (1 << 23) /* * HWCAP2 flags - for elf_hwcap2 (in kernel) and AT_HWCAP2 |