[Xen-devel] [PATCH v3 16/27] Mips/MSI: Save msi chip in pci sysdata

[Yijing Wang <wangyijing@xxxxxxxxxx>]

Save msi chip in pci sysdata, add arch pci_find_msi_chip()
to extract out msi chip.

Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
---
 arch/mips/include/asm/pci.h |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 974b0e3..287661b 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -43,6 +43,9 @@ struct pci_controller {
 
        int iommu;
 
+#ifdef CONFIG_PCI_MSI
+       struct msi_chip *msi_chip;
+#endif
        /* Optional access methods for reading/writing the bus number
           of the PCI controller */
        int (*get_busno)(void);
@@ -54,6 +57,17 @@ struct pci_controller {
  */
 extern void register_pci_controller(struct pci_controller *hose);
 
+#ifdef CONFIG_PCI_MSI
+
+static inline struct msi_chip *pci_msi_chip(struct pci_bus *bus)
+{
+       struct pci_controller *control = (struct pci_controller *)bus->sysdata;
+
+       return control->msi_chip;
+}
+
+#endif
+
 /*
  * board supplied pci irq fixup routine
  */
-- 
1.7.1


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