linux-kernel - Re: [RFC PATCH 31/33] irqchip/gic-v4: Add VLPI configuration interface

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Date:   Thu, 16 Mar 2017 22:08:06 +0100
From:   Auger Eric <eric.auger@...hat.com>
To:     Marc Zyngier <marc.zyngier@....com>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Christoffer Dall <christoffer.dall@...aro.org>
Subject: Re: [RFC PATCH 31/33] irqchip/gic-v4: Add VLPI configuration
 interface

Hi,

On 17/01/2017 11:20, Marc Zyngier wrote:
> Add the required interfaces to map, unmap and update a VLPI.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Reviewed-by: Eric Auger <eric.auger@...hat.com>

Eric

> ---
>  drivers/irqchip/irq-gic-v4.c       | 29 +++++++++++++++++++++++++++++
>  include/linux/irqchip/arm-gic-v4.h |  3 +++
>  2 files changed, 32 insertions(+)
> 
> diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c
> index 7d74089..36ccaac 100644
> --- a/drivers/irqchip/irq-gic-v4.c
> +++ b/drivers/irqchip/irq-gic-v4.c
> @@ -140,3 +140,32 @@ int its_invall_vpe(struct its_vpe *vpe)
>  
>  	return its_send_vpe_cmd(vpe, &info);
>  }
> +
> +int its_map_vlpi(int irq, struct its_vlpi_map *map)
> +{
> +	struct its_cmd_info info = {
> +		.cmd_type = MAP_VLPI,
> +		.map      = map,
> +	};
> +
> +	return irq_set_vcpu_affinity(irq, &info);
> +}
> +
> +int its_unmap_vlpi(int irq)
> +{
> +	struct its_cmd_info info = {
> +		.cmd_type = UNMAP_VLPI,
> +	};
> +
> +	return irq_set_vcpu_affinity(irq, &info);
> +}
> +
> +int its_prop_update_vlpi(int irq, u8 config)
> +{
> +	struct its_cmd_info info = {
> +		.cmd_type = PROP_UPDATE_VLPI,
> +		.config   = config,
> +	};
> +
> +	return irq_set_vcpu_affinity(irq, &info);
> +}
> diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h
> index 1c58add..f85a929 100644
> --- a/include/linux/irqchip/arm-gic-v4.h
> +++ b/include/linux/irqchip/arm-gic-v4.h
> @@ -93,5 +93,8 @@ int its_alloc_vcpu_irqs(struct its_vm *vm, struct its_vpe **vpes, int nr_vpes);
>  void its_free_vcpu_irqs(struct its_vm *vm, int nr_vpes);
>  int its_schedule_vpe(struct its_vpe *vpe, bool on);
>  int its_invall_vpe(struct its_vpe *vpe);
> +int its_map_vlpi(int irq, struct its_vlpi_map *map);
> +int its_unmap_vlpi(int irq);
> +int its_prop_update_vlpi(int irq, u8 config);
>  
>  #endif
>