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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-21 13:54:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-21 13:54:05 -0700 |
| commit | 5fe8321b8886d814e65952d74b207fe59e1096ea (patch) | |
| tree | fbba395994b436562a9b03175947fb2534a0becf /arch/x86/include/asm | |
| parent | 709d9f54cc1847a2d24224ffedec7fd4d0f3c714 (diff) | |
| parent | fa47f7e52874683a9659df2f1f143105f676dc0f (diff) | |
| download | linux-5fe8321b8886d814e65952d74b207fe59e1096ea.tar.bz2 | |
Merge branch 'x86-x2apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-x2apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, x2apic: Simplify apic init in SMP and UP builds
x86, intr-remap: Remove IRTE setup duplicate code
x86, intr-remap: Set redirection hint in the IRTE
Diffstat (limited to 'arch/x86/include/asm')
| -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 */ |