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| author | Andrew Jones <ajones@ventanamicro.com> | 2023-12-20 19:00:15 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-12-30 08:55:09 +0300 |
| commit | 6cfc624576a64145b1d6d3d48de7161a7505f403 (patch) | |
| tree | 2dbc35cc35021f11cb47f363f8d417d47973df3f | |
| parent | 323925ed6dbb0ed877047b28fae4152527cc63db (diff) | |
| download | linux-6cfc624576a64145b1d6d3d48de7161a7505f403.tar.xz | |
RISC-V: Add SBI STA extension definitions
The SBI STA extension enables steal-time accounting. Add the
definitions it specifies.
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
| -rw-r--r-- | arch/riscv/include/asm/sbi.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 0892f4421bc4..b6f898c56940 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -31,6 +31,7 @@ enum sbi_ext_id { SBI_EXT_SRST = 0x53525354, SBI_EXT_PMU = 0x504D55, SBI_EXT_DBCN = 0x4442434E, + SBI_EXT_STA = 0x535441, /* Experimentals extensions must lie within this range */ SBI_EXT_EXPERIMENTAL_START = 0x08000000, @@ -243,6 +244,22 @@ enum sbi_ext_dbcn_fid { SBI_EXT_DBCN_CONSOLE_WRITE_BYTE = 2, }; +/* SBI STA (steal-time accounting) extension */ +enum sbi_ext_sta_fid { + SBI_EXT_STA_STEAL_TIME_SET_SHMEM = 0, +}; + +struct sbi_sta_struct { + __le32 sequence; + __le32 flags; + __le64 steal; + u8 preempted; + u8 pad[47]; +} __packed; + +#define SBI_STA_SHMEM_DISABLE -1 + +/* SBI spec version fields */ #define SBI_SPEC_VERSION_DEFAULT 0x1 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f |