Hi Hari,
From: ext Hari Kanigeri <h-kanigeri2@xxxxxx>
Subject: [PATCH 1/2] omap: iommu-update irq mask to be specific about twl
Date: Tue, 18 May 2010 01:12:29 +0200
> Update the irq mask so that is is clear that the MMU
~~typo?
> interrupt is related to TWL fault.
>
> Signed-off-by: Hari Kanigeri <h-kanigeri2@xxxxxx>
> ---
> arch/arm/mach-omap2/iommu2.c | 10 ++++++++--
> 1 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/iommu2.c b/arch/arm/mach-omap2/iommu2.c
> index e82da68..fcf4f4a 100644
> --- a/arch/arm/mach-omap2/iommu2.c
> +++ b/arch/arm/mach-omap2/iommu2.c
> @@ -46,7 +46,13 @@
> #define MMU_IRQ_TLBMISS (1 << 0)
> #define MMU_IRQ_MASK \
> (MMU_IRQ_MULTIHITFAULT | MMU_IRQ_TABLEWALKFAULT | MMU_IRQ_EMUMISS | \
> - MMU_IRQ_TRANSLATIONFAULT)
> + MMU_IRQ_TRANSLATIONFAULT | MMU_IRQ_TLBMISS)
> +#define MMU_IRQ_TWL_MASK \
> + (MMU_IRQ_MULTIHITFAULT | MMU_IRQ_TABLEWALKFAULT | MMU_IRQ_EMUMISS | \
> + MMU_IRQ_TRANSLATIONFAULT)
> +#define MMU_IRQ_TLB_MISS_MASK \
> + (MMU_IRQ_MULTIHITFAULT | MMU_IRQ_TLBMISS | MMU_IRQ_EMUMISS | \
> + MMU_IRQ_TRANSLATIONFAULT)
nitpick: The above could look better as blew?
#define __MMU_IRQ_FAULT (MMU_IRQ_MULTIHITFAULT | MMU_IRQ_EMUMISS | MMU_IRQ_TRANSLATIONFAULT)
#define MMU_IRQ_MASK (__MMU_IRQ_FAULT | MMU_IRQ_TABLEWALKFAULT | MMU_IRQ_TLBMISS)
#define MMU_IRQ_TWL_MASK (__MMU_IRQ_FAULT | MMU_IRQ_TABLEWALKFAULT)
#define MMU_IRQ_TLB_MISS_MASK (__MMU_IRQ_FAULT | MMU_IRQ_TLBMISS)
>
> /* MMU_CNTL */
> #define MMU_CNTL_SHIFT 1
> @@ -96,7 +102,7 @@ static int omap2_iommu_enable(struct iommu *obj)
> l |= (MMU_SYS_IDLE_SMART | MMU_SYS_AUTOIDLE);
> iommu_write_reg(obj, l, MMU_SYSCONFIG);
>
> - iommu_write_reg(obj, MMU_IRQ_MASK, MMU_IRQENABLE);
> + iommu_write_reg(obj, MMU_IRQ_TWL_MASK, MMU_IRQENABLE);
> iommu_write_reg(obj, pa, MMU_TTB);
>
> l = iommu_read_reg(obj, MMU_CNTL);
> --
> 1.7.0
>
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