Re: [Xen-devel] [PATCH v2 7/7] xen/arm: Move vGIC registers on Hip04 platform

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Frediano,

On 11/03/2014 04:46 PM, Frediano Ziglio wrote:
> Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>
> Signed-off-by: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> ---
>  xen/arch/arm/gic-v2.c     | 15 +++++++++++++--
>  xen/include/asm-arm/gic.h |  2 ++
>  2 files changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
> index cea9edc..eb8cc19 100644
> --- a/xen/arch/arm/gic-v2.c
> +++ b/xen/arch/arm/gic-v2.c
> @@ -669,8 +669,19 @@ static int gicv2_make_dt_node(const struct domain *d,
>          return -FDT_ERR_XEN(ENOMEM);
>  
>      tmp = new_cells;
> -    dt_set_range(&tmp, node, d->arch.vgic.dbase, PAGE_SIZE);
> -    dt_set_range(&tmp, node, d->arch.vgic.cbase, PAGE_SIZE * 2);
> +
> +    if ( nr_gic_cpu_if == 16 )
> +    {
> +        dt_set_range(&tmp, node, d->arch.vgic.dbase - HIP04_VGIC_REG_OFFSET,
> +                     PAGE_SIZE);
> +        dt_set_range(&tmp, node, d->arch.vgic.cbase - HIP04_VGIC_REG_OFFSET,
> +                     PAGE_SIZE * 2);
> +    }
> +    else
> +    {
> +        dt_set_range(&tmp, node, d->arch.vgic.dbase, PAGE_SIZE);
> +        dt_set_range(&tmp, node, d->arch.vgic.cbase, PAGE_SIZE * 2);
> +    }
>  
>      res = fdt_property(fdt, "reg", new_cells, len);
>      xfree(new_cells);
> diff --git a/xen/include/asm-arm/gic.h b/xen/include/asm-arm/gic.h
> index 3d2b3db..5af8201 100644
> --- a/xen/include/asm-arm/gic.h
> +++ b/xen/include/asm-arm/gic.h
> @@ -147,6 +147,8 @@
>  #define GICH_LR_PENDING         1
>  #define GICH_LR_ACTIVE          2
>  
> +#define HIP04_VGIC_REG_OFFSET   0xe0000000
> +

Please move this define in gic-v2.c. The header gic.h should only
contains value that needs to be shared with the vgic and/or the other
GIC drivers.

Also, where does come from the offset? Any pointer to the documentation?

Regards,

-- 
Julien Grall

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