linux-kernel - Re: [PATCH 4/5] irqchip: gic-v3: Add gic_get_irq_domain() to get the irqdomain of the GIC.

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Date:	Wed, 15 Jul 2015 18:12:31 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	David Daney <ddaney.cavm@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>
CC:	Robert Richter <rrichter@...ium.com>, linux-kernel@...r.kernel.org,
	David Daney <david.daney@...ium.com>
Subject: Re: [PATCH 4/5] irqchip: gic-v3: Add gic_get_irq_domain() to get
 the irqdomain of the GIC.

On 15/07/15 17:54, David Daney wrote:
> From: David Daney <david.daney@...ium.com>
> 
> Needed to map SPI interrupt sources.
> 
> Signed-off-by: David Daney <david.daney@...ium.com>
> ---
>  drivers/irqchip/irq-gic-v3.c       | 5 +++++
>  include/linux/irqchip/arm-gic-v3.h | 1 +
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
> index c52f7ba..0019fed 100644
> --- a/drivers/irqchip/irq-gic-v3.c
> +++ b/drivers/irqchip/irq-gic-v3.c
> @@ -58,6 +58,11 @@ static struct gic_chip_data gic_data __read_mostly;
>  /* Our default, arbitrary priority value. Linux only uses one anyway. */
>  #define DEFAULT_PMR_VALUE	0xf0
>  
> +struct irq_domain *gic_get_irq_domain(void)
> +{
> +	return gic_data.domain;
> +}
> +
>  static inline unsigned int gic_irq(struct irq_data *d)
>  {
>  	return d->hwirq;
> diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
> index 18e3757..5992224 100644
> --- a/include/linux/irqchip/arm-gic-v3.h
> +++ b/include/linux/irqchip/arm-gic-v3.h
> @@ -391,6 +391,7 @@ int its_init(struct device_node *node, struct rdists *rdists,
>  
>  typedef u32 (*its_pci_requester_id_t)(struct pci_dev *, u16);
>  void set_its_pci_requester_id(its_pci_requester_id_t fn);
> +struct irq_domain *gic_get_irq_domain(void);
>  #endif
>  
>  #endif
> 

Hmmmffff... You need the domain for SPIs??

What is wrong with putting these interrupts in your device tree?

	M.
-- 
Jazz is not dead. It just smells funny...
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