[Xen-devel] [RFC PATCH 18/20] Sparc/MSI: Use msi_chip instead of arch func to configure MSI/MSI-X

[Yijing Wang <wangyijing@xxxxxxxxxx>]

Introduce a new struct msi_chip sparc_msi_chip instead of weak arch
functions to configure MSI/MSI-X.

Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
---
 arch/sparc/kernel/pci.c |   18 ++++++++++++++----
 1 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 857ad77..9eabd22 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -839,18 +839,18 @@ int pci_domain_nr(struct pci_bus *pbus)
 EXPORT_SYMBOL(pci_domain_nr);
 
 #ifdef CONFIG_PCI_MSI
-int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
+int sparc_setup_msi_irq(struct device *dev, struct msi_desc *desc)
 {
-       struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
+       struct pci_pbm_info *pbm = dev->archdata.host_controller;
        unsigned int irq;
 
        if (!pbm->setup_msi_irq)
                return -EINVAL;
 
-       return pbm->setup_msi_irq(&irq, pdev, desc);
+       return pbm->setup_msi_irq(&irq, to_pci_dev(dev), desc);
 }
 
-void arch_teardown_msi_irq(unsigned int irq)
+void sparc_teardown_msi_irq(unsigned int irq)
 {
        struct msi_desc *entry = irq_get_msi_desc(irq);
        struct pci_dev *pdev = entry->dev;
@@ -859,6 +859,16 @@ void arch_teardown_msi_irq(unsigned int irq)
        if (pbm->teardown_msi_irq)
                pbm->teardown_msi_irq(irq, pdev);
 }
+
+struct msi_chip sparc_msi_chip = {
+       .setup_irq = sparc_setup_msi_irq,
+       .teardown_irq = sparc_teardown_msi_irq,
+};
+
+struct msi_chip *arch_get_match_msi_chip(struct device *dev)
+{
+       return &sparc_msi_chip;
+}
 #endif /* !(CONFIG_PCI_MSI) */
 
 static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
-- 
1.7.1


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