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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-02-22 21:07:44 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-23 22:27:54 +0100 |
| commit | bcc7c1244fcfd852b9f4590935491057e1cab9dd (patch) | |
| tree | 4b68fc51466e8b42f343d6f26db0f1200d595c50 /arch/x86/include | |
| parent | 9079b35364e75ce6b968a179f861d2f819f33e61 (diff) | |
| download | linux-bcc7c1244fcfd852b9f4590935491057e1cab9dd.tar.gz linux-bcc7c1244fcfd852b9f4590935491057e1cab9dd.tar.bz2 linux-bcc7c1244fcfd852b9f4590935491057e1cab9dd.zip | |
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')
| -rw-r--r-- | arch/x86/include/asm/prom.h | 2 |
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 |