diff mbox series

[v2,02/13] RISC-V: Add SBI STA extension definitions

Message ID 20231214101552.100721-17-ajones@ventanamicro.com (mailing list archive)
State Superseded
Headers show
Series RISC-V: Add steal-time support | expand

Commit Message

Andrew Jones Dec. 14, 2023, 10:15 a.m. UTC 
The SBI STA extension enables steal-time accounting. Add the
definitions it specifies.

Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
---
 arch/riscv/include/asm/sbi.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

Comments

Anup Patel Dec. 15, 2023, 5:38 a.m. UTC | #1 
On Thu, Dec 14, 2023 at 3:45 PM Andrew Jones <ajones@ventanamicro.com> wrote:
>
> The SBI STA extension enables steal-time accounting. Add the
> definitions it specifies.
>
> Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

LGTM.

Reviewed-by: Anup Patel <anup@brainfault.org>

Regards,
Anup

> ---
>  arch/riscv/include/asm/sbi.h | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
>
> 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
> --
> 2.43.0
>
diff mbox series

Patch

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