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[00/12] riscv: Add vendor extensions support for SiFive

Message ID 20250418053239.4351-1-cyan.yang@sifive.com (mailing list archive)
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Series riscv: Add vendor extensions support for SiFive | expand

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Cyan Yang April 18, 2025, 5:32 a.m. UTC 
This patch set adds four vendor-specific ISA extensions from SiFive:
"xsfvqmaccdod", "xsfvqmaccqoq", "xsfvfnrclipxfqf", and "xsfvfwmaccqqq".

Additionally, a new hwprobe key, RISCV_HWPROBE_KEY_VENDOR_EXT_SIFIVE_0,
has been added to query which SiFive vendor extensions are supported on
the current platform.

Signed-off-by: Cyan Yang <cyan.yang@sifive.com>

Cyan Yang (12):
  dt-bindings: riscv: Add xsfvqmaccdod and xsfvqmaccqoq ISA extension
    description
  riscv: Add SiFive xsfvqmaccdod and xsfvqmaccqoq vendor extensions
  riscv: hwprobe: Document SiFive xsfvqmaccdod and xsfvqmaccqoq vendor
    extensions
  riscv: hwprobe: Add SiFive vendor extension support and probe for
    xsfqmaccdod and xsfqmaccqoq
  dt-bindings: riscv: Add xsfvfnrclipxfqf ISA extension description
  riscv: Add SiFive xsfvfnrclipxfqf vendor extension
  riscv: hwprobe: Document SiFive xsfvfnrclipxfqf vendor extension
  riscv: hwprobe: Add SiFive xsfvfnrclipxfqf vendor extension
  dt-bindings: riscv: Add xsfvfwmaccqqq ISA extension description
  riscv: Add SiFive xsfvfwmaccqqq vendor extension
  riscv: hwprobe: Document SiFive xsfvfwmaccqqq vendor extension
  riscv: hwprobe: Add SiFive xsfvfwmaccqqq vendor extension

 Documentation/arch/riscv/hwprobe.rst          | 22 ++++++++++++++++
 .../devicetree/bindings/riscv/extensions.yaml | 25 +++++++++++++++++++
 arch/riscv/Kconfig.vendor                     | 13 ++++++++++
 arch/riscv/include/asm/hwprobe.h              |  3 ++-
 .../include/asm/vendor_extensions/sifive.h    | 16 ++++++++++++
 .../asm/vendor_extensions/sifive_hwprobe.h    | 19 ++++++++++++++
 arch/riscv/include/uapi/asm/hwprobe.h         |  1 +
 arch/riscv/include/uapi/asm/vendor/sifive.h   |  6 +++++
 arch/riscv/kernel/sys_hwprobe.c               |  5 ++++
 arch/riscv/kernel/vendor_extensions.c         | 10 ++++++++
 arch/riscv/kernel/vendor_extensions/Makefile  |  2 ++
 arch/riscv/kernel/vendor_extensions/sifive.c  | 21 ++++++++++++++++
 .../kernel/vendor_extensions/sifive_hwprobe.c | 22 ++++++++++++++++
 13 files changed, 164 insertions(+), 1 deletion(-)
 create mode 100644 arch/riscv/include/asm/vendor_extensions/sifive.h
 create mode 100644 arch/riscv/include/asm/vendor_extensions/sifive_hwprobe.h
 create mode 100644 arch/riscv/include/uapi/asm/vendor/sifive.h
 create mode 100644 arch/riscv/kernel/vendor_extensions/sifive.c
 create mode 100644 arch/riscv/kernel/vendor_extensions/sifive_hwprobe.c