[Xen-devel] [RFC PATCH 09/20] irq_remapping/MSI: Use msi_chip instead of arch func to configure MSI/MSI-X

[Yijing Wang <wangyijing@xxxxxxxxxx>]

Introduce a new struct msi_chip remap_msi_chip instead of weak arch
functions to configure irq remapping MSI/MSI-X in x86.

Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
---
 drivers/iommu/irq_remapping.c |   13 +++++++++----
 1 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 33c4395..f494b51 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -139,15 +139,20 @@ error:
        return ret;
 }
 
-static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
+static int irq_remapping_setup_msi_irqs(struct device *dev,
                                        int nvec, int type)
 {
        if (type == PCI_CAP_ID_MSI)
-               return do_setup_msi_irqs(dev, nvec);
+               return do_setup_msi_irqs(to_pci_dev(dev), nvec);
        else
-               return do_setup_msix_irqs(dev, nvec);
+               return do_setup_msix_irqs(to_pci_dev(dev), nvec);
 }
 
+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)
 {
        /*
@@ -165,9 +170,9 @@ static void __init irq_remapping_modify_x86_ops(void)
        x86_io_apic_ops.set_affinity    = set_remapped_irq_affinity;
        x86_io_apic_ops.setup_entry     = setup_ioapic_remapped_entry;
        x86_io_apic_ops.eoi_ioapic_pin  = eoi_ioapic_pin_remapped;
-       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)
-- 
1.7.1


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