Re: [qemu-s390x] [PATCH v3 1/2] vfio-ccw: new capability chain support

[Eric Farman]

On 3/1/19 4:39 AM, Cornelia Huck wrote:
> To be replaced with a real linux-headers update.
>
> Signed-off-by: Cornelia Huck <address@hidden>

This looks straightforward.

Reviewed-by: Eric Farman <address@hidden>

> ---
>   linux-headers/linux/vfio.h     |  4 ++++
>   linux-headers/linux/vfio_ccw.h | 12 ++++++++++++
>   2 files changed, 16 insertions(+)
>
> diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
> index 12a7b1dc53c8..24f505199f83 100644
> --- a/linux-headers/linux/vfio.h
> +++ b/linux-headers/linux/vfio.h
> @@ -353,6 +353,10 @@ struct vfio_region_gfx_edid {
>   #define VFIO_DEVICE_GFX_LINK_STATE_DOWN  2
>   };
>   
> +#define VFIO_REGION_TYPE_CCW			(2)
> +/* ccw sub-types */
> +#define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD      (1)
> +
>   /*
>    * 10de vendor sub-type
>    *
> diff --git a/linux-headers/linux/vfio_ccw.h b/linux-headers/linux/vfio_ccw.h
> index 5bf96c3812d2..fcc3e69ef526 100644
> --- a/linux-headers/linux/vfio_ccw.h
> +++ b/linux-headers/linux/vfio_ccw.h
> @@ -12,6 +12,7 @@
>   
>   #include <linux/types.h>
>   
> +/* used for START SUBCHANNEL, always present */
>   struct ccw_io_region {
>   #define ORB_AREA_SIZE 12
>         __u8    orb_area[ORB_AREA_SIZE];
> @@ -22,4 +23,15 @@ struct ccw_io_region {
>         __u32   ret_code;
>   } __attribute__((packed));
>   
> +/*
> + * used for processing commands that trigger asynchronous actions
> + * Note: this is controlled by a capability
> + */
> +#define VFIO_CCW_ASYNC_CMD_HSCH (1 << 0)
> +#define VFIO_CCW_ASYNC_CMD_CSCH (1 << 1)
> +struct ccw_cmd_region {
> +       __u32 command;
> +       __u32 ret_code;
> +} __attribute__((packed));
> +
>   #endif