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...@intel.com>
Reviewed-by: Jiang Liu <jiang....@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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