On Mon, Dec 05, 2016 at 10:46:36PM +0100, Eric Auger wrote:
> Add a new cpu_count field in gicv3_data indicating the
> number of redistributors. This will be useful for enumeration
> of their resources such as LPI pending tables.
I'm fine with the additional state, but just curious, will it
ever be possible for gicv3.cpu_count != nr_cpus?
>
> Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
> ---
> lib/arm/asm/gic-v3.h | 1 +
> lib/arm/gic-v3.c | 2 ++
> 2 files changed, 3 insertions(+)
>
> diff --git a/lib/arm/asm/gic-v3.h b/lib/arm/asm/gic-v3.h
> index ed330af..039b7c2 100644
> --- a/lib/arm/asm/gic-v3.h
> +++ b/lib/arm/asm/gic-v3.h
> @@ -58,6 +58,7 @@ struct gicv3_data {
> void *dist_base;
> void *redist_base[NR_CPUS];
> unsigned int irq_nr;
> + unsigned int cpu_count;
> };
> extern struct gicv3_data gicv3_data;
>
> diff --git a/lib/arm/gic-v3.c b/lib/arm/gic-v3.c
> index 6246221..9921f4d 100644
> --- a/lib/arm/gic-v3.c
> +++ b/lib/arm/gic-v3.c
> @@ -12,12 +12,14 @@ void gicv3_set_redist_base(size_t stride)
> void *ptr = gicv3_data.redist_base[0];
> u64 typer;
>
> + gicv3_data.cpu_count = 0;
> do {
> typer = gicv3_read_typer(ptr + GICR_TYPER);
> if ((typer >> 32) == aff) {
> gicv3_redist_base() = ptr;
> return;
> }
> + gicv3_data.cpu_count++;
> ptr += stride; /* skip RD_base, SGI_base, etc. */
> } while (!(typer & GICR_TYPER_LAST));
>
> --
> 2.5.5
>
>
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