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    Subject[v7 1/8] iommu: Add new member capability to struct irq_remap_ops
    Date
    This patch adds a new member capability to struct irq_remap_ops,
    this new function ops can be used to check whether some
    features are supported, such as VT-d Posted-Interrupts.

    Signed-off-by: Feng Wu <feng.wu@intel.com>
    Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com>
    ---
    arch/x86/include/asm/irq_remapping.h | 4 ++++
    drivers/iommu/irq_remapping.h | 3 +++
    2 files changed, 7 insertions(+)

    diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
    index 78974fb..0953723 100644
    --- a/arch/x86/include/asm/irq_remapping.h
    +++ b/arch/x86/include/asm/irq_remapping.h
    @@ -31,6 +31,10 @@ struct irq_alloc_info;

    #ifdef CONFIG_IRQ_REMAP

    +enum irq_remap_cap {
    + IRQ_POSTING_CAP = 0,
    +};
    +
    extern void set_irq_remapping_broken(void);
    extern int irq_remapping_prepare(void);
    extern int irq_remapping_enable(void);
    diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
    index 91d5a11..b6ca30d 100644
    --- a/drivers/iommu/irq_remapping.h
    +++ b/drivers/iommu/irq_remapping.h
    @@ -35,6 +35,9 @@ extern int no_x2apic_optout;
    extern int irq_remapping_enabled;

    struct irq_remap_ops {
    + /* The supported capabilities */
    + int capability;
    +
    /* Initializes hardware and makes it ready for remapping interrupts */
    int (*prepare)(void);

    --
    2.1.0


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