From: robherring2@gmail.com (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 07/16] ARM: GIC: Add global gic_handle_irq_offset() function
Date: Wed, 28 Sep 2011 10:50:32 -0500 [thread overview]
Message-ID: <4E834248.3010908@gmail.com> (raw)
In-Reply-To: <1317034955-1029-8-git-send-email-marc.zyngier@arm.com>
On 09/26/2011 06:02 AM, Marc Zyngier wrote:
> Similar to gic_handle_irq(), gic_handle_irq_offset() is provided
> for those platform who insist on having their GIC base interrupt
> at something different from zero. At the moment, Exynos4 is the
> only one...
>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> ---
> arch/arm/common/gic.c | 24 ++++++++++++++++++++++++
> arch/arm/include/asm/hardware/gic.h | 1 +
> 2 files changed, 25 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
> index 5a22896..ef803d2 100644
> --- a/arch/arm/common/gic.c
> +++ b/arch/arm/common/gic.c
> @@ -232,6 +232,30 @@ asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
> } while (1);
> }
>
> +asmlinkage void __exception_irq_entry gic_handle_irq_offset(struct pt_regs *regs)
> +{
> + u32 irqstat, irqnr;
> + u32 offset = gic_data[0].irq_offset;
> +
> + do {
> + irqstat = readl_relaxed(gic_cpu_base_addr + GIC_CPU_INTACK);
> + irqnr = irqstat & ~0x1c00;
> +
> + if (likely(irqnr > 15 && irqnr < 1021)) {
> + handle_IRQ(irqnr + offset, regs);
Can't this be combined with gic_handle_irq. irq_offset will be 0 in that
case. Really, irq_domain should be used here.
Rob
> + continue;
> + }
> + if (irqnr < 16) {
> + writel_relaxed(irqstat, gic_cpu_base_addr + GIC_CPU_EOI);
> +#ifdef CONFIG_SMP
> + handle_IPI(irqnr, regs);
> +#endif
> + continue;
> + }
> + break;
> + } while (1);
> +}
> +
> static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
> {
> struct gic_chip_data *chip_data = irq_get_handler_data(irq);
> diff --git a/arch/arm/include/asm/hardware/gic.h b/arch/arm/include/asm/hardware/gic.h
> index 45e4ab4..0f454c6 100644
> --- a/arch/arm/include/asm/hardware/gic.h
> +++ b/arch/arm/include/asm/hardware/gic.h
> @@ -39,6 +39,7 @@ extern struct irq_chip gic_arch_extn;
> void gic_init(unsigned int, unsigned int, void __iomem *, void __iomem *);
> void gic_secondary_init(unsigned int);
> void gic_handle_irq(struct pt_regs *regs);
> +void gic_handle_irq_offset(struct pt_regs *regs);
> void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
> void gic_raise_softirq(const struct cpumask *mask, unsigned int irq);
>
next prev parent reply other threads:[~2011-09-28 15:50 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-26 11:02 [PATCH v2 00/16] Switch GIC users (and omap2plus) to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 01/16] ARM: Make global handler and CONFIG_MULTI_IRQ_HANDLER mutually exclusive Marc Zyngier
2011-09-28 1:00 ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 02/16] ARM: smp: Add an IPI handler callable from C code Marc Zyngier
2011-09-28 1:01 ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 03/16] ARM: GIC: Add global gic_handle_irq() function Marc Zyngier
2011-09-28 1:01 ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 04/16] ARM: RealView: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 05/16] ARM: VExpress: " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 06/16] ARM: msm: convert SMP platforms " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 07/16] ARM: GIC: Add global gic_handle_irq_offset() function Marc Zyngier
2011-09-28 15:50 ` Rob Herring [this message]
2011-09-29 8:53 ` Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 08/16] ARM: exynos4: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 09/16] ARM: tegra2: " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 10/16] ARM: ux500: " Marc Zyngier
2011-09-27 11:47 ` Linus Walleij
2011-09-27 12:33 ` Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 11/16] ARM: shmobile: convert smp platforms to gic_handle_irq() Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 12/16] ARM: cns3xxx: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 13/16] ARM: zynq: " Marc Zyngier
2011-09-26 11:02 ` [PATCH v2 14/16] ARM: omap2/3: Add global omap2/3_intc_handle_irq() functions Marc Zyngier
2011-09-28 1:02 ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 15/16] ARM: omap2plus: convert to CONFIG_MULTI_IRQ_HANDLER Marc Zyngier
2011-09-28 1:04 ` Tony Lindgren
2011-09-26 11:02 ` [PATCH v2 16/16] ARM: GIC: Make MULTI_IRQ_HANDLER mandatory Marc Zyngier
2011-09-27 3:43 ` Shawn Guo
2011-09-27 8:32 ` Marc Zyngier
2011-09-27 10:19 ` Shawn Guo
2011-09-28 1:04 ` Tony Lindgren
2011-09-26 20:20 ` [PATCH v2 00/16] Switch GIC users (and omap2plus) to CONFIG_MULTI_IRQ_HANDLER David Brown
2011-09-27 0:15 ` David Brown
2011-09-27 8:58 ` Marc Zyngier
2011-09-27 10:20 ` Shawn Guo
2011-09-27 10:22 ` Marc Zyngier
2011-09-27 23:53 ` Tony Lindgren
2011-09-28 0:53 ` Tony Lindgren
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