x86, io-apic: Move CONFIG_IRQ_REMAP code out of x86 core

Move all the code to either to the header file
asm/irq_remapping.h or to drivers/iommu/.

Signed-off-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

4 files changed, 24 insertions, 43 deletions

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index fc89a2a..10a78c3 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -127,6 +127,7 @@ struct irq_cfg {
 	u8			vector;
 	u8			move_in_progress : 1;
 #ifdef CONFIG_IRQ_REMAP
+	u8			remapped : 1;
 	union {
 		struct irq_2_iommu irq_2_iommu;
 		struct irq_2_irte  irq_2_irte;
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 71f5f08..36fb5ab 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -144,6 +144,7 @@ extern int timer_through_8259;
 	(mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
 
 struct io_apic_irq_attr;
+struct irq_cfg;
 extern int io_apic_set_pci_routing(struct device *dev, int irq,
 		 struct io_apic_irq_attr *irq_attr);
 void setup_IO_APIC_irq_extra(u32 gsi);
@@ -152,6 +153,10 @@ extern void ioapic_insert_resources(void);
 extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *,
 				     unsigned int, int,
 				     struct io_apic_irq_attr *);
+extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *,
+				     unsigned int, int,
+				     struct io_apic_irq_attr *);
+extern void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg);
 
 int io_apic_setup_irq_pin_once(unsigned int irq, int node, struct io_apic_irq_attr *attr);
 
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 6f4b48b..562db68 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -45,6 +45,13 @@ extern void compose_remapped_msi_msg(struct pci_dev *pdev,
 extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
 extern void panic_if_irq_remap(const char *msg);
 
+static inline bool irq_remapped(struct irq_cfg *cfg)
+{
+	return (cfg->remapped == 1);
+}
+
+void irq_remap_modify_chip_defaults(struct irq_chip *chip);
+
 #else  /* CONFIG_IRQ_REMAP */
 
 static inline void setup_irq_remapping_ops(void) { }
@@ -76,6 +83,16 @@ static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
 static inline void panic_if_irq_remap(const char *msg)
 {
 }
+
+static inline bool irq_remapped(struct irq_cfg *cfg)
+{
+	return false;
+}
+
+static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
+{
+}
+
 #endif /* CONFIG_IRQ_REMAP */
 
 #endif /* __X86_IRQ_REMAPPING_H */
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index ee0757d..0fd5f30 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -68,22 +68,6 @@
 #define for_each_irq_pin(entry, head) \
 	for (entry = head; entry; entry = entry->next)
 
-#ifdef CONFIG_IRQ_REMAP
-static void irq_remap_modify_chip_defaults(struct irq_chip *chip);
-static inline bool irq_remapped(struct irq_cfg *cfg)
-{
-	return cfg->irq_2_iommu.iommu != NULL;
-}
-#else
-static inline bool irq_remapped(struct irq_cfg *cfg)
-{
-	return false;
-}
-static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
-{
-}
-#endif
-
 /*
  *      Is the SiS APIC rmw bug present ?
  *      -1 = don't know, 0 = no, 1 = yes
@@ -606,7 +590,7 @@ static void __eoi_ioapic_pin(int apic, int pin, int vector, struct irq_cfg *cfg)
 	}
 }
 
-static void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
+void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
 {
 	struct irq_pin_list *entry;
 	unsigned long flags;
@@ -2542,32 +2526,6 @@ static void ack_apic_level(struct irq_data *data)
 	ioapic_irqd_unmask(data, cfg, masked);
 }
 
-#ifdef CONFIG_IRQ_REMAP
-static void ir_ack_apic_edge(struct irq_data *data)
-{
-	ack_APIC_irq();
-}
-
-static void ir_ack_apic_level(struct irq_data *data)
-{
-	ack_APIC_irq();
-	eoi_ioapic_irq(data->irq, data->chip_data);
-}
-
-static void ir_print_prefix(struct irq_data *data, struct seq_file *p)
-{
-	seq_printf(p, " IR-%s", data->chip->name);
-}
-
-static void irq_remap_modify_chip_defaults(struct irq_chip *chip)
-{
-	chip->irq_print_chip = ir_print_prefix;
-	chip->irq_ack = ir_ack_apic_edge;
-	chip->irq_eoi = ir_ack_apic_level;
-	chip->irq_set_affinity = x86_io_apic_ops.set_affinity;
-}
-#endif /* CONFIG_IRQ_REMAP */
-
 static struct irq_chip ioapic_chip __read_mostly = {
 	.name			= "IO-APIC",
 	.irq_startup		= startup_ioapic_irq,