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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2010-08-27 11:09:49 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-09-15 17:36:45 -0700 |
| commit | 62a92f4c69cd1d9361ad8c16be1dd16e6821bc15 (patch) | |
| tree | 0e7dc5f29629d69bf93430b675d9d6d39e75c1f2 /arch/x86/include/asm/irq_remapping.h | |
| parent | 75e3cfbed6f71a8f151dc6e413b6ce3c390030cb (diff) | |
| download | lwn-62a92f4c69cd1d9361ad8c16be1dd16e6821bc15.tar.gz lwn-62a92f4c69cd1d9361ad8c16be1dd16e6821bc15.zip | |
x86, intr-remap: Remove IRTE setup duplicate code
Remove IRTE setup duplicate code with prepare_irte().
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <20100827181049.095067319@sbsiddha-MOBL3.sc.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/irq_remapping.h')
| -rw-r--r-- | arch/x86/include/asm/irq_remapping.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index f275e2244505..8d841505344e 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -3,4 +3,31 @@ #define IRTE_DEST(dest) ((x2apic_mode) ? dest : dest << 8) +#ifdef CONFIG_INTR_REMAP +static inline void prepare_irte(struct irte *irte, int vector, + unsigned int dest) +{ + memset(irte, 0, sizeof(*irte)); + + irte->present = 1; + irte->dst_mode = apic->irq_dest_mode; + /* + * Trigger mode in the IRTE will always be edge, and for IO-APIC, the + * actual level or edge trigger will be setup in the IO-APIC + * RTE. This will help simplify level triggered irq migration. + * For more details, see the comments (in io_apic.c) explainig IO-APIC + * irq migration in the presence of interrupt-remapping. + */ + irte->trigger_mode = 0; + irte->dlvry_mode = apic->irq_delivery_mode; + irte->vector = vector; + irte->dest_id = IRTE_DEST(dest); + irte->redir_hint = 1; +} +#else +static void prepare_irte(struct irte *irte, int vector, unsigned int dest) +{ +} +#endif + #endif /* _ASM_X86_IRQ_REMAPPING_H */ |