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@xxxxxxxxx>
Reviewed-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/irq_remapping.h | 4 ++++
drivers/iommu/irq_remapping.h | 4 ++++
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 6ba2431..f67ae08 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 setup_irq_remapping_ops(void);
extern int irq_remapping_supported(void);
extern void set_irq_remapping_broken(void);
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
index 4bd791d..2d991b2 100644
--- a/drivers/iommu/irq_remapping.h
+++ b/drivers/iommu/irq_remapping.h
@@ -28,6 +28,7 @@ struct irq_data;
struct msi_msg;
struct irq_domain;
struct irq_alloc_info;
+enum irq_remap_cap;
extern int disable_irq_remap;
extern int irq_remap_broken;
@@ -39,6 +40,9 @@ struct irq_remap_ops {
/* Check whether Interrupt Remapping is supported */
int (*supported)(void);
+ /* Check some capability is supported */
+ bool (*capability)(enum irq_remap_cap);
+
/* Initializes hardware and makes it ready for remapping interrupts */
int (*prepare)(void);
--
1.7.1
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