PCI: designware: Add get_msi_data() to pcie_host_ops

Add a struct pcie_host_ops .get_msi_data() method for platforms to return
their special MSI message data.

Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mohit KUMAR <mohit.kumar@st.com>

2 files changed, 7 insertions, 1 deletions

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 566658750201..34e736601259 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -366,7 +366,12 @@ static int dw_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev,
         else
                 msg.address_lo = virt_to_phys((void *)pp->msi_data);
         msg.address_hi = 0x0;
-        msg.data = pos;
+
+        if (pp->ops->get_msi_data)
+                msg.data = pp->ops->get_msi_data(pp, pos);
+        else
+                msg.data = pos;
+
         write_msi_msg(irq, &msg);
 
         return 0;
diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h
index 904e40a3f32a..c6256751daff 100644
--- a/drivers/pci/host/pcie-designware.h
+++ b/drivers/pci/host/pcie-designware.h
@@ -71,6 +71,7 @@ struct pcie_host_ops {
         void (*msi_set_irq)(struct pcie_port *pp, int irq);
         void (*msi_clear_irq)(struct pcie_port *pp, int irq);
         u32 (*get_msi_addr)(struct pcie_port *pp);
+        u32 (*get_msi_data)(struct pcie_port *pp, int pos);
         void (*scan_bus)(struct pcie_port *pp);
         int (*msi_host_init)(struct pcie_port *pp, struct msi_chip *chip);
 };