From a553b142b8effbfcbba24ebbf8c07a1a86d32ce6 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 7 May 2014 15:44:11 +0000 Subject: [PATCH] iommu: dmar: Provide arch specific irq allocation ia64 and x86 share this driver. x86 is moving to a different irq allocation and ia64 keeps its private irq_create/destroy stuff. Use macros to redirect to one or the other. Yes, macros to avoid include hell. Signed-off-by: Thomas Gleixner Reviewed-by: Grant Likely Cc: Tony Luck Cc: Peter Zijlstra Cc: Fenghua Yu Acked-by: Joerg Roedel Cc: x86@kernel.org Cc: linux-ia64@vger.kernel.org Cc: iommu@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20140507154336.372289825@linutronix.de Signed-off-by: Thomas Gleixner --- arch/ia64/include/asm/irq_remapping.h | 2 ++ arch/x86/include/asm/irq_remapping.h | 3 +++ drivers/iommu/dmar.c | 6 +++--- 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/ia64/include/asm/irq_remapping.h b/arch/ia64/include/asm/irq_remapping.h index a8687b1d8906..e3b3556e2e1b 100644 --- a/arch/ia64/include/asm/irq_remapping.h +++ b/arch/ia64/include/asm/irq_remapping.h @@ -1,4 +1,6 @@ #ifndef __IA64_INTR_REMAPPING_H #define __IA64_INTR_REMAPPING_H #define irq_remapping_enabled 0 +#define dmar_alloc_hwirq create_irq +#define dmar_free_hwirq destroy_irq #endif diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index d806b228d2c0..b7747c4c2cf2 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -103,4 +103,7 @@ static inline bool setup_remapped_irq(int irq, } #endif /* CONFIG_IRQ_REMAP */ +#define dmar_alloc_hwirq() irq_alloc_hwirq(-1) +#define dmar_free_hwirq irq_free_hwirq + #endif /* __X86_IRQ_REMAPPING_H */ diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 3ce1f62a091f..9a4f05e5b23f 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -994,7 +994,7 @@ static void free_iommu(struct intel_iommu *iommu) if (iommu->irq) { free_irq(iommu->irq, iommu); irq_set_handler_data(iommu->irq, NULL); - destroy_irq(iommu->irq); + dmar_free_hwirq(iommu->irq); } if (iommu->qi) { @@ -1550,7 +1550,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu) if (iommu->irq) return 0; - irq = create_irq(); + irq = dmar_alloc_hwirq(); if (irq <= 0) { pr_err("IOMMU: no free vectors\n"); return -EINVAL; @@ -1563,7 +1563,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu) if (ret) { irq_set_handler_data(irq, NULL); iommu->irq = 0; - destroy_irq(irq); + dmar_free_hwirq(irq); return ret; } -- 2.34.1