On Thu, 5 Jul 2018 13:25:30 -0400
"Jason J. Herne" <jjhe...@linux.ibm.com> wrote:
> From: "Jason J. Herne" <jjhe...@linux.vnet.ibm.com>
>
> Move channel i/o setup code out to a separate function. This decouples cio
> setup from the virtio code path and allows us to make use of it for booting
> dasd devices.
>
> Signed-off-by: Jason J. Herne <jjhe...@linux.vnet.ibm.com>
> Acked-by: Halil Pasic <pa...@linux.vnet.ibm.com>
> Reviewed-by: Collin Walling <wall...@linux.ibm.com>
> Signed-off-by: Jason J. Herne <jjhe...@linux.ibm.com>
> ---
> pc-bios/s390-ccw/main.c | 20 +++++++++++++-------
> 1 file changed, 13 insertions(+), 7 deletions(-)
>
> diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
> index 544851d..63117d1 100644
> --- a/pc-bios/s390-ccw/main.c
> +++ b/pc-bios/s390-ccw/main.c
> @@ -99,6 +99,18 @@ static void menu_setup(void)
> }
> }
>
> +/*
> + * Initialize the channel I/O subsystem so we can talk to our ipl/boot
> device.
> + */
> +static void cio_setup(void)
<bikeshed>Call this css_setup?</bikeshed>
> +{
> + /*
> + * Unconditionally enable mss support. In every sane configuration this
> + * will succeed; and even if it doesn't, stsch_err() can handle it.
> + */
> + enable_mss_facility();
> +}
> +
> static void virtio_setup(void)
> {
> Schib schib;
