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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2011-02-22 23:07:44 +0300
committerThomas Gleixner <tglx@linutronix.de>2011-02-24 00:27:54 +0300
commitbcc7c1244fcfd852b9f4590935491057e1cab9dd (patch)
tree4b68fc51466e8b42f343d6f26db0f1200d595c50 /arch/x86/include/asm/prom.h
parent9079b35364e75ce6b968a179f861d2f819f33e61 (diff)
downloadlinux-bcc7c1244fcfd852b9f4590935491057e1cab9dd.tar.xz
x86: ioapic: Add OF bindings for IO_APIC
ioapic_xlate provides a translation from the information in device tree to ioapic related informations. This includes - obtaining hw irq which is the vector number "=> pin number + gsi" - obtaining type (level/edge/..) - programming this information into ioapic ioapic_add_ofnode adds an irq_domain based on informations from the device tree. This information (irq_domain) is required in order to map a device to its proper interrupt controller. [ tglx: Adapted to the io_apic changes, which let us move that whole code to devicetree.c ] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: sodaville@linutronix.de Cc: devicetree-discuss@lists.ozlabs.org LKML-Reference: <1298405266-1624-10-git-send-email-bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/prom.h')
-rw-r--r--arch/x86/include/asm/prom.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h
index 8fcd519a44dc..ae50131ad766 100644
--- a/arch/x86/include/asm/prom.h
+++ b/arch/x86/include/asm/prom.h
@@ -27,6 +27,7 @@
extern int of_ioapic;
extern u64 initial_dtb;
extern void add_dtb(u64 data);
+extern void x86_add_irq_domains(void);
void x86_dtb_find_config(void);
void x86_dtb_get_config(unsigned int unused);
void add_interrupt_host(struct irq_domain *ih);
@@ -44,6 +45,7 @@ static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
#else
static inline void add_dtb(u64 data) { }
+static inline void x86_add_irq_domains(void) { }
static inline void x86_of_pci_init(void) { }
#define x86_dtb_find_config x86_init_noop
#define x86_dtb_get_config x86_init_uint_noop