[Xen-devel] [PATCH v3 20/27] MIPS/Xlr/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>
---
 arch/mips/pci/pci-xlr.c |   17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/arch/mips/pci/pci-xlr.c b/arch/mips/pci/pci-xlr.c
index 0dde803..0e611de 100644
--- a/arch/mips/pci/pci-xlr.c
+++ b/arch/mips/pci/pci-xlr.c
@@ -149,6 +149,8 @@ static struct resource nlm_pci_io_resource = {
        .flags          = IORESOURCE_IO,
 };
 
+static struct msi_chip xlr_msi_chip;
+
 struct pci_controller nlm_pci_controller = {
        .index          = 0,
        .pci_ops        = &nlm_pci_ops,
@@ -156,6 +158,9 @@ struct pci_controller nlm_pci_controller = {
        .mem_offset     = 0x00000000UL,
        .io_resource    = &nlm_pci_io_resource,
        .io_offset      = 0x00000000UL,
+#ifdef CONFIG_PCI_MSI
+       .msi_chip = &xlr_msi_chip,
+#endif
 };
 
 /*
@@ -214,11 +219,13 @@ static int get_irq_vector(const struct pci_dev *dev)
 }
 
 #ifdef CONFIG_PCI_MSI
-void arch_teardown_msi_irq(unsigned int irq)
+static void xlr_teardown_msi_irq(struct msi_chip *chip,
+               unsigned int irq)
 {
 }
 
-int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
+static int xlr_setup_msi_irq(struct msi_chip *chip,
+               struct pci_dev *dev, struct msi_desc *desc)
 {
        struct msi_msg msg;
        struct pci_dev *lnk;
@@ -263,6 +270,12 @@ int arch_setup_msi_irq(struct pci_dev *dev, struct 
msi_desc *desc)
        write_msi_msg(irq, &msg);
        return 0;
 }
+
+static struct msi_chip xlr_msi_chip = {
+       .setup_irq = xlr_setup_msi_irq,
+       .teardown_irq = xlr_teardown_msi_irq,
+};
+
 #endif
 
 /* Extra ACK needed for XLR on chip PCI controller */
-- 
1.7.1


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