diff mbox series

[v2,1/5] riscv: Add 3 SBI wrapper functions to get cpu manufacturer information

Message ID 1615973613-22364-2-git-send-email-vincent.chen@sifive.com (mailing list archive)
State New, archived
Headers show
Series riscv: introduce alternative mechanism to apply errata patches | expand

Commit Message

Vincent Chen March 17, 2021, 9:33 a.m. UTC 
Add 3 wrapper functions to get vendor id, architecture id and implement id
from M-mode

Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
---
 arch/riscv/include/asm/sbi.h |  3 +++
 arch/riscv/kernel/sbi.c      | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

Comments

Anup Patel March 17, 2021, 11:32 a.m. UTC | #1 
On Wed, Mar 17, 2021 at 3:04 PM Vincent Chen <vincent.chen@sifive.com> wrote:
>
> Add 3 wrapper functions to get vendor id, architecture id and implement id
> from M-mode
>
> Signed-off-by: Vincent Chen <vincent.chen@sifive.com>

Looks good to me.

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

Regards,
Anup

> ---
>  arch/riscv/include/asm/sbi.h |  3 +++
>  arch/riscv/kernel/sbi.c      | 15 +++++++++++++++
>  2 files changed, 18 insertions(+)
>
> diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
> index 99895d9c3bdd..dd2329962ceb 100644
> --- a/arch/riscv/include/asm/sbi.h
> +++ b/arch/riscv/include/asm/sbi.h
> @@ -97,6 +97,9 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
>
>  void sbi_console_putchar(int ch);
>  int sbi_console_getchar(void);
> +long sbi_get_mvendorid(void);
> +long sbi_get_marchid(void);
> +long sbi_get_mimpid(void);
>  void sbi_set_timer(uint64_t stime_value);
>  void sbi_shutdown(void);
>  void sbi_clear_ipi(void);
> diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c
> index f4a7db3d309e..ead7e3fec104 100644
> --- a/arch/riscv/kernel/sbi.c
> +++ b/arch/riscv/kernel/sbi.c
> @@ -547,6 +547,21 @@ static inline long sbi_get_firmware_version(void)
>         return __sbi_base_ecall(SBI_EXT_BASE_GET_IMP_VERSION);
>  }
>
> +long sbi_get_mvendorid(void)
> +{
> +       return __sbi_base_ecall(SBI_EXT_BASE_GET_MVENDORID);
> +}
> +
> +long sbi_get_marchid(void)
> +{
> +       return __sbi_base_ecall(SBI_EXT_BASE_GET_MARCHID);
> +}
> +
> +long sbi_get_mimpid(void)
> +{
> +       return __sbi_base_ecall(SBI_EXT_BASE_GET_MIMPID);
> +}
> +
>  static void sbi_send_cpumask_ipi(const struct cpumask *target)
>  {
>         struct cpumask hartid_mask;
> --
> 2.7.4
>
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
diff mbox series

Patch

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 99895d9c3bdd..dd2329962ceb 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -97,6 +97,9 @@  struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
 
 void sbi_console_putchar(int ch);
 int sbi_console_getchar(void);
+long sbi_get_mvendorid(void);
+long sbi_get_marchid(void);
+long sbi_get_mimpid(void);
 void sbi_set_timer(uint64_t stime_value);
 void sbi_shutdown(void);
 void sbi_clear_ipi(void);
diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c
index f4a7db3d309e..ead7e3fec104 100644
--- a/arch/riscv/kernel/sbi.c
+++ b/arch/riscv/kernel/sbi.c
@@ -547,6 +547,21 @@  static inline long sbi_get_firmware_version(void)
 	return __sbi_base_ecall(SBI_EXT_BASE_GET_IMP_VERSION);
 }
 
+long sbi_get_mvendorid(void)
+{
+	return __sbi_base_ecall(SBI_EXT_BASE_GET_MVENDORID);
+}
+
+long sbi_get_marchid(void)
+{
+	return __sbi_base_ecall(SBI_EXT_BASE_GET_MARCHID);
+}
+
+long sbi_get_mimpid(void)
+{
+	return __sbi_base_ecall(SBI_EXT_BASE_GET_MIMPID);
+}
+
 static void sbi_send_cpumask_ipi(const struct cpumask *target)
 {
 	struct cpumask hartid_mask;