[Xen-devel] [PATCH v2 17/22] s390/MSI: Use MSI chip framework to configure MSI/MSI-X irq

[Yijing Wang <wangyijing@xxxxxxxxxx>]

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>
Acked-by: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
---
 arch/s390/pci/pci.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 552b990..da5316e 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -358,7 +358,7 @@ static void zpci_irq_handler(struct airq_struct *airq)
        }
 }
 
-int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
+int zpci_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 {
        struct zpci_dev *zdev = get_zdev(pdev);
        unsigned int hwirq, msi_vecs;
@@ -434,7 +434,7 @@ out:
        return rc;
 }
 
-void arch_teardown_msi_irqs(struct pci_dev *pdev)
+static void zpci_teardown_msi_irqs(struct pci_dev *pdev)
 {
        struct zpci_dev *zdev = get_zdev(pdev);
        struct msi_desc *msi;
@@ -464,6 +464,16 @@ void arch_teardown_msi_irqs(struct pci_dev *pdev)
        airq_iv_free_bit(zpci_aisb_iv, zdev->aisb);
 }
 
+static struct msi_chip zpci_msi_chip = {
+       .setup_irqs = zpci_setup_msi_irqs,
+       .teardown_irqs = zpci_teardown_msi_irqs,
+};
+
+struct msi_chip *arch_find_msi_chip(struct pci_dev *dev)
+{
+       return &zpci_msi_chip;
+}
+
 static void zpci_map_resources(struct zpci_dev *zdev)
 {
        struct pci_dev *pdev = zdev->pdev;
-- 
1.7.1


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