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x86, intr-remap: Remove IRTE setup duplicate code

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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>
This commit is contained in:
Suresh Siddha 2010-08-27 11:09:49 -07:00 committed by H. Peter Anvin
parent 75e3cfbed6
commit 62a92f4c69
2 changed files with 29 additions and 25 deletions
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27
arch/x86/include/asm/irq_remapping.h
View File

@ -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 */

27
arch/x86/kernel/apic/io_apic.c
View File

@ -1377,22 +1377,7 @@ int setup_ioapic_entry(int apic_id, int irq,
if (index < 0)
panic("Failed to allocate IRTE for ioapic %d\n", apic_id);
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 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 above 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(destination);
irte.redir_hint = 1;
prepare_irte(&irte, vector, destination);
/* Set source-id of interrupt request */
set_ioapic_sid(&irte, apic_id);
@ -3336,15 +3321,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq,
ir_index = map_irq_to_irte_handle(irq, &sub_handle);
BUG_ON(ir_index == -1);
memset (&irte, 0, sizeof(irte));
irte.present = 1;
irte.dst_mode = apic->irq_dest_mode;
irte.trigger_mode = 0; /* edge */
irte.dlvry_mode = apic->irq_delivery_mode;
irte.vector = cfg->vector;
irte.dest_id = IRTE_DEST(dest);
irte.redir_hint = 1;
prepare_irte(&irte, cfg->vector, dest);
/* Set source-id of interrupt request */
if (pdev)