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    Subject[PATCH 12/19] x86, irq: Add data structure to keep AMD specific irq remapping information
    Date
    Add a data structure to store information the IOMMU driver
    can use to get from a 'struct irq_cfg' to the remapping
    entry.

    Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
    ---
    arch/x86/include/asm/hw_irq.h | 12 +++++++++++-
    1 file changed, 11 insertions(+), 1 deletion(-)

    diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
    index eb92a6e..fc89a2a 100644
    --- a/arch/x86/include/asm/hw_irq.h
    +++ b/arch/x86/include/asm/hw_irq.h
    @@ -101,6 +101,7 @@ static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
    irq_attr->polarity = polarity;
    }

    +/* Intel specific interrupt remapping information */
    struct irq_2_iommu {
    struct intel_iommu *iommu;
    u16 irte_index;
    @@ -108,6 +109,12 @@ struct irq_2_iommu {
    u8 irte_mask;
    };

    +/* AMD specific interrupt remapping information */
    +struct irq_2_irte {
    + u16 devid; /* Device ID for IRTE table */
    + u16 index; /* Index into IRTE table*/
    +};
    +
    /*
    * This is performance-critical, we want to do it O(1)
    *
    @@ -120,7 +127,10 @@ struct irq_cfg {
    u8 vector;
    u8 move_in_progress : 1;
    #ifdef CONFIG_IRQ_REMAP
    - struct irq_2_iommu irq_2_iommu;
    + union {
    + struct irq_2_iommu irq_2_iommu;
    + struct irq_2_irte irq_2_irte;
    + };
    #endif
    };

    --
    1.7.9.5



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