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[Xen-devel,v2,10/22] Irq_remapping/MSI: Use MSI chip framework to configure MSI/MSI-X irq

Message ID 1411614872-4009-11-git-send-email-wangyijing@huawei.com
State New
Headers show

Commit Message

wangyijing Sept. 25, 2014, 3:14 a.m. UTC 
Use MSI chip framework instead of arch MSI functions to configure
MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
 drivers/iommu/irq_remapping.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
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Patch

diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 33c4395..7929590 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -148,6 +148,11 @@  static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
 		return do_setup_msix_irqs(dev, nvec);
 }
 
+static struct msi_chip remap_msi_chip = {
+	.setup_irqs = irq_remapping_setup_msi_irqs,
+	.teardown_irq = native_teardown_msi_irq,
+};
+
 static void eoi_ioapic_pin_remapped(int apic, int pin, int vector)
 {
 	/*
@@ -168,6 +173,7 @@  static void __init irq_remapping_modify_x86_ops(void)
 	x86_msi.setup_msi_irqs		= irq_remapping_setup_msi_irqs;
 	x86_msi.setup_hpet_msi		= setup_hpet_msi_remapped;
 	x86_msi.compose_msi_msg		= compose_remapped_msi_msg;
+	x86_msi_chip = &remap_msi_chip;
 }
 
 static __init int setup_nointremap(char *str)