linux-kernel - Re: [RFC PATCH v4 05/13] riscv: Add new csr defines related to vector extension

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Message-ID: <CAJF2gTQ=S+tbxVOoL3w3DjQ1H0UP6L7F++i-OAcaeY+QNmd=mw@mail.gmail.com>
Date:   Mon, 1 Jun 2020 17:03:47 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Greentime Hu <greentime.hu@...ive.com>
Cc:     Guo Ren <guoren@...ux.alibaba.com>,
        Vincent Chen <vincent.chen@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Oleg Nesterov <oleg@...hat.com>
Subject: Re: [RFC PATCH v4 05/13] riscv: Add new csr defines related to vector extension

Since it has been redesigned with new version spec, please change the
first-author :)

And add me as Co-developed.

On Tue, May 26, 2020 at 3:03 PM Greentime Hu <greentime.hu@...ive.com> wrote:
>
> From: Guo Ren <guoren@...ux.alibaba.com>
>
> Follow the riscv vector spec to add new csr number.
>
> [greentime.hu@...ive.com: update the defined value based on new spec and
> remove unused ones]
> Signed-off-by: Greentime Hu <greentime.hu@...ive.com>
> Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
> ---
>  arch/riscv/include/asm/csr.h | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
> index 8e18d2c64399..cc13626c4bbe 100644
> --- a/arch/riscv/include/asm/csr.h
> +++ b/arch/riscv/include/asm/csr.h
> @@ -24,6 +24,12 @@
>  #define SR_FS_CLEAN    _AC(0x00004000, UL)
>  #define SR_FS_DIRTY    _AC(0x00006000, UL)
>
> +#define SR_VS           _AC(0x00000600, UL) /* Vector Status */
> +#define SR_VS_OFF       _AC(0x00000000, UL)
> +#define SR_VS_INITIAL   _AC(0x00000200, UL)
> +#define SR_VS_CLEAN     _AC(0x00000400, UL)
> +#define SR_VS_DIRTY     _AC(0x00000600, UL)
> +
>  #define SR_XS          _AC(0x00018000, UL) /* Extension Status */
>  #define SR_XS_OFF      _AC(0x00000000, UL)
>  #define SR_XS_INITIAL  _AC(0x00008000, UL)
> @@ -31,9 +37,9 @@
>  #define SR_XS_DIRTY    _AC(0x00018000, UL)
>
>  #ifndef CONFIG_64BIT
> -#define SR_SD          _AC(0x80000000, UL) /* FS/XS dirty */
> +#define SR_SD          _AC(0x80000000, UL) /* FS/VS/XS dirty */
>  #else
> -#define SR_SD          _AC(0x8000000000000000, UL) /* FS/XS dirty */
> +#define SR_SD          _AC(0x8000000000000000, UL) /* FS/VS/XS dirty */
>  #endif
>
>  /* SATP flags */
> @@ -114,6 +120,12 @@
>  #define CSR_PMPADDR0           0x3b0
>  #define CSR_MHARTID            0xf14
>
> +#define CSR_VSTART             0x8
> +#define CSR_VCSR               0xf
> +#define CSR_VL                 0xc20
> +#define CSR_VTYPE              0xc21
> +#define CSR_VLENB              0xc22
> +
>  #ifdef CONFIG_RISCV_M_MODE
>  # define CSR_STATUS    CSR_MSTATUS
>  # define CSR_IE                CSR_MIE
> --
> 2.26.2
>
>


-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/