[Xen-devel] [PATCH v3 23/27] arm/iop13xx/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/arm/mach-iop13xx/include/mach/pci.h |    4 ++++
 arch/arm/mach-iop13xx/iq81340mc.c        |    3 +++
 arch/arm/mach-iop13xx/iq81340sc.c        |    5 ++++-
 arch/arm/mach-iop13xx/msi.c              |   11 +++++++++--
 4 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-iop13xx/include/mach/pci.h 
b/arch/arm/mach-iop13xx/include/mach/pci.h
index 59f42b5..c87ac3a 100644
--- a/arch/arm/mach-iop13xx/include/mach/pci.h
+++ b/arch/arm/mach-iop13xx/include/mach/pci.h
@@ -11,6 +11,10 @@ void iop13xx_atu_select(struct hw_pci *plat_pci);
 void iop13xx_pci_init(void);
 void iop13xx_map_pci_memory(void);
 
+#ifdef CONFIG_PCI_MSI
+extern struct msi_chip iop13xx_msi_chip;
+#endif
+
 #define IOP_PCI_STATUS_ERROR (PCI_STATUS_PARITY |           \
                               PCI_STATUS_SIG_TARGET_ABORT | \
                               PCI_STATUS_REC_TARGET_ABORT | \
diff --git a/arch/arm/mach-iop13xx/iq81340mc.c 
b/arch/arm/mach-iop13xx/iq81340mc.c
index 9cd07d3..1f499b6 100644
--- a/arch/arm/mach-iop13xx/iq81340mc.c
+++ b/arch/arm/mach-iop13xx/iq81340mc.c
@@ -59,6 +59,9 @@ static struct hw_pci iq81340mc_pci __initdata = {
        .map_irq        = iq81340mc_pcix_map_irq,
        .scan           = iop13xx_scan_bus,
        .preinit        = iop13xx_pci_init,
+#ifdef CONFIG_PCI_MSI
+       .msi_chip       = &iop13xx_msi_chip,
+#endif
 };
 
 static int __init iq81340mc_pci_init(void)
diff --git a/arch/arm/mach-iop13xx/iq81340sc.c 
b/arch/arm/mach-iop13xx/iq81340sc.c
index b3ec11c..8bdfdc5 100644
--- a/arch/arm/mach-iop13xx/iq81340sc.c
+++ b/arch/arm/mach-iop13xx/iq81340sc.c
@@ -60,7 +60,10 @@ static struct hw_pci iq81340sc_pci __initdata = {
        .setup          = iop13xx_pci_setup,
        .scan           = iop13xx_scan_bus,
        .map_irq        = iq81340sc_atux_map_irq,
-       .preinit        = iop13xx_pci_init
+       .preinit        = iop13xx_pci_init,
+#ifdef CONFIG_PCI_MSI
+       .msi_chip       = &iop13xx_msi_chip,
+#endif
 };
 
 static int __init iq81340sc_pci_init(void)
diff --git a/arch/arm/mach-iop13xx/msi.c b/arch/arm/mach-iop13xx/msi.c
index e7730cf..3135a63 100644
--- a/arch/arm/mach-iop13xx/msi.c
+++ b/arch/arm/mach-iop13xx/msi.c
@@ -132,7 +132,8 @@ static struct irq_chip iop13xx_msi_chip = {
        .irq_unmask = unmask_msi_irq,
 };
 
-int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
+static int iop13xx_setup_msi_irq(struct msi_chip *chip,
+               struct pci_dev *dev, struct msi_desc *desc)
 {
        int id, irq = irq_alloc_desc_from(IRQ_IOP13XX_MSI_0, -1);
        struct msi_msg msg;
@@ -159,7 +160,13 @@ int arch_setup_msi_irq(struct pci_dev *pdev, struct 
msi_desc *desc)
        return 0;
 }
 
-void arch_teardown_msi_irq(unsigned int irq)
+static void iop13xx_teardown_msi_irq(struct msi_chip *chip,
+               unsigned int irq)
 {
        irq_free_desc(irq);
 }
+
+struct msi_chip iop13xx_chip = {
+       .setup_irq = iop13xx_setup_msi_irq,
+       .teardown_irq = iop13xx_teardown_msi_irq,
+};
-- 
1.7.1


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