[Xen-devel] [PATCH v3 19/27] MIPS/Xlp/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/include/asm/netlogic/xlp-hal/pcibus.h |    1 +
 arch/mips/pci/msi-xlp.c                         |   11 +++++++++--
 arch/mips/pci/pci-xlp.c                         |    3 +++
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h 
b/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h
index 91540f4..90646ad 100644
--- a/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h
+++ b/arch/mips/include/asm/netlogic/xlp-hal/pcibus.h
@@ -103,6 +103,7 @@
 
 #ifdef CONFIG_PCI_MSI
 void xlp_init_node_msi_irqs(int node, int link);
+extern struct msi_chip xlp_chip;
 #else
 static inline void xlp_init_node_msi_irqs(int node, int link) {}
 #endif
diff --git a/arch/mips/pci/msi-xlp.c b/arch/mips/pci/msi-xlp.c
index e469dc7..cca2257 100644
--- a/arch/mips/pci/msi-xlp.c
+++ b/arch/mips/pci/msi-xlp.c
@@ -245,7 +245,8 @@ static struct irq_chip xlp_msix_chip = {
        .irq_unmask     = unmask_msi_irq,
 };
 
-void arch_teardown_msi_irq(unsigned int irq)
+static void xlp_teardown_msi_irq(struct msi_chip *chip,
+               unsigned int irq)
 {
 }
 
@@ -450,7 +451,8 @@ static int xlp_setup_msix(uint64_t lnkbase, int node, int 
link,
        return 0;
 }
 
-int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
+static int xlp_setup_msi_irq(struct msi_chip *chip,
+               struct pci_dev *dev, struct msi_desc *desc)
 {
        struct pci_dev *lnkdev;
        uint64_t lnkbase;
@@ -472,6 +474,11 @@ int arch_setup_msi_irq(struct pci_dev *dev, struct 
msi_desc *desc)
                return xlp_setup_msi(lnkbase, node, link, desc);
 }
 
+struct msi_chip xlp_chip = {
+       .setup_irq = xlp_setup_msi_irq,
+       .teardown_irq = xlp_teardown_msi_irq,
+};
+
 void __init xlp_init_node_msi_irqs(int node, int link)
 {
        struct nlm_soc_info *nodep;
diff --git a/arch/mips/pci/pci-xlp.c b/arch/mips/pci/pci-xlp.c
index 7babf01..5d7b6a0 100644
--- a/arch/mips/pci/pci-xlp.c
+++ b/arch/mips/pci/pci-xlp.c
@@ -174,6 +174,9 @@ struct pci_controller nlm_pci_controller = {
        .mem_offset     = 0x00000000UL,
        .io_resource    = &nlm_pci_io_resource,
        .io_offset      = 0x00000000UL,
+#ifdef CONFIG_PCI_MSI
+       .msi_chip = &xlp_chip,
+#endif
 };
 
 struct pci_dev *xlp_get_pcie_link(const struct pci_dev *dev)
-- 
1.7.1


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