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@xxxxxxxxxx>
---
arch/x86/include/asm/pci.h | 1 +
arch/x86/kernel/apic/io_apic.c | 12 ++++++++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 0892ea0..878a06d 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -101,6 +101,7 @@ void native_teardown_msi_irq(unsigned int irq);
void native_restore_msi_irqs(struct pci_dev *dev);
int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
unsigned int irq_base, unsigned int irq_offset);
+extern struct msi_chip *x86_msi_chip;
#else
#define native_setup_msi_irqs NULL
#define native_teardown_msi_irq NULL
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 2a2ec28..882b95e 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3337,6 +3337,18 @@ int default_setup_hpet_msi(unsigned int irq, unsigned int id)
}
#endif
+struct msi_chip apic_msi_chip = {
+ .setup_irqs = native_setup_msi_irqs,
+ .teardown_irq = native_teardown_msi_irq,
+};
+
+struct msi_chip *arch_find_msi_chip(struct pci_dev *dev)
+{
+ return x86_msi_chip;
+}
+
+struct msi_chip *x86_msi_chip = &apic_msi_chip;
+
#endif /* CONFIG_PCI_MSI */
/*
* Hypertransport interrupt support
--
1.7.1
