iommu/vt-d: Convert IR ioapic-setup to use remap_ops

The IOAPIC setup routine for interrupt remapping is VT-d
specific. Move it to the irq_remap_ops and add a call helper
function.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/arch/x86/include/asm/intr_remapping.h b/arch/x86/include/asm/intr_remapping.h
index 55aa892a53e3..a22e1f1ac7ec 100644
--- a/arch/x86/include/asm/intr_remapping.h
+++ b/arch/x86/include/asm/intr_remapping.h
@@ -24,6 +24,9 @@
 
 #ifdef CONFIG_IRQ_REMAP
 
+struct IO_APIC_route_entry;
+struct io_apic_irq_attr;
+
 extern int intr_remapping_enabled;
 
 extern void setup_intr_remapping(void);
@@ -33,6 +36,10 @@ extern int intr_hardware_enable(void);
 extern void intr_hardware_disable(void);
 extern int intr_hardware_reenable(int);
 extern int intr_enable_fault_handling(void);
+extern int intr_setup_ioapic_entry(int irq,
+                                   struct IO_APIC_route_entry *entry,
+                                   unsigned int destination, int vector,
+                                   struct io_apic_irq_attr *attr);
 
 #else  /* CONFIG_IRQ_REMAP */
 
@@ -45,7 +52,13 @@ static inline int intr_hardware_enable(void) { return -ENODEV; }
 static inline void intr_hardware_disable(void) { }
 static inline int intr_hardware_reenable(int eim) { return -ENODEV; }
 static inline int intr_enable_fault_handling(void) { return -ENODEV; }
-
+static inline int intr_setup_ioapic_entry(int irq,
+                                          struct IO_APIC_route_entry *entry,
+                                          unsigned int destination, int vector,
+                                          struct io_apic_irq_attr *attr)
+{
+        return -ENODEV;
+}
 #endif /* CONFIG_IRQ_REMAP */
 
 #endif /* __X86_INTR_REMAPPING_H */