[PATCH] microblaze: Add support for little/big endian in/out api's

[Michal Simek]

čt 27. 8. 2020 v 13:54 odesílatel Michal Simek <michal.simek at xilinx.com> napsal:
>
> From: T Karthik Reddy <t.karthik.reddy at xilinx.com>
>
> Add read/write memory utilities for 16 and 32 bits. Add these
> api's for both little and big endian systems similar to arm
> architecture.
>
> Signed-off-by: T Karthik Reddy <t.karthik.reddy at xilinx.com>
> Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma at xilinx.com>
> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
> ---
>
>  arch/microblaze/include/asm/io.h | 22 ++++++++++++++++------
>  1 file changed, 16 insertions(+), 6 deletions(-)
>
> diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
> index 8e6be0ae267f..632bb236fbbe 100644
> --- a/arch/microblaze/include/asm/io.h
> +++ b/arch/microblaze/include/asm/io.h
> @@ -50,14 +50,24 @@
>  #define outw(x, addr)  ((void)writew(x, addr))
>  #define outl(x, addr)  ((void)writel(x, addr))
>
> -/* Some #definitions to keep strange Xilinx code happy */
> -#define in_8(addr)     readb(addr)
> -#define in_be16(addr)  readw(addr)
> -#define in_be32(addr)  readl(addr)
> +#define out_arch(type, endian, addr, x)        \
> +                __raw_write##type(cpu_to_##endian(x), addr)
> +#define in_arch(type, endian, addr)    \
> +               endian##_to_cpu(__raw_read##type(addr))
> +
> +#define out_le16(addr, x)      out_arch(w, le16, addr, x)
> +#define out_le32(addr, x)      out_arch(l, le32, addr, x)
> +
> +#define in_le16(addr)          in_arch(w, le16, addr)
> +#define in_le32(addr)          in_arch(l, le32, addr)
> +
> +#define in_8(addr)             readb(addr)
> +#define in_be16(addr)          in_arch(w, be16, addr)
> +#define in_be32(addr)          in_arch(l, be32, addr)
>
>  #define out_8(addr, x)         outb(x, addr)
> -#define out_be16(addr, x)      outw(x, addr)
> -#define out_be32(addr, x)      outl(x, addr)
> +#define out_be16(addr, x)      out_arch(w, be16, addr, x)
> +#define out_be32(addr, x)      out_arch(l, be32, addr, x)
>
>  #define inb_p(port)            inb((port))
>  #define outb_p(val, port)      outb((val), (port))
> --
> 2.28.0
>

Applied.
M

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs