diff options
| author | Andrew Jones <ajones@ventanamicro.com> | 2023-09-18 15:15:22 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-09-21 04:22:25 -0700 |
| commit | 9c7646d5ffd2b8bf720a0b77897f6c5095dfc53b (patch) | |
| tree | c568378dca2f84e014409ec1c6cd83c702cab598 /arch/riscv/include/uapi/asm/hwprobe.h | |
| parent | 43c16d51a19b0ba2ed66978d5924d486ec1e42bc (diff) | |
| download | lwn-9c7646d5ffd2b8bf720a0b77897f6c5095dfc53b.tar.gz lwn-9c7646d5ffd2b8bf720a0b77897f6c5095dfc53b.zip | |
RISC-V: hwprobe: Expose Zicboz extension and its block size
Expose Zicboz through hwprobe and also provide a key to extract its
respective block size. Opportunistically add a macro and apply it to
current extensions in order to avoid duplicating code.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230918131518.56803-11-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/uapi/asm/hwprobe.h')
| -rw-r--r-- | arch/riscv/include/uapi/asm/hwprobe.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h index 006bfb48343d..86d08a0e617b 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -29,6 +29,7 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_EXT_ZBA (1 << 3) #define RISCV_HWPROBE_EXT_ZBB (1 << 4) #define RISCV_HWPROBE_EXT_ZBS (1 << 5) +#define RISCV_HWPROBE_EXT_ZICBOZ (1 << 6) #define RISCV_HWPROBE_KEY_CPUPERF_0 5 #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0) #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0) @@ -36,6 +37,7 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_MISALIGNED_FAST (3 << 0) #define RISCV_HWPROBE_MISALIGNED_UNSUPPORTED (4 << 0) #define RISCV_HWPROBE_MISALIGNED_MASK (7 << 0) +#define RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE 6 /* Increase RISCV_HWPROBE_MAX_KEY when adding items. */ #endif |