PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()

[linux-2.6-microblaze.git] / drivers / pci / msi.c

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 604265c..5e63645 100644 (file)
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -185,7 +185,7 @@ static inline __attribute_const__ u32 msi_enabled_mask(u16 control)
  * reliably as devices without an INTx disable bit will then generate a
  * level IRQ which will never be cleared.
  */
-static u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
+u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
 {
        u32 mask_bits = desc->masked;
 
@@ -199,9 +199,14 @@ static u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
        return mask_bits;
 }
 
+__weak u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
+{
+       return default_msi_mask_irq(desc, mask, flag);
+}
+
 static void msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
 {
-       desc->masked = __msi_mask_irq(desc, mask, flag);
+       desc->masked = arch_msi_mask_irq(desc, mask, flag);
 }
 
 /*
@@ -211,7 +216,7 @@ static void msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
  * file.  This saves a few milliseconds when initialising devices with lots
  * of MSI-X interrupts.
  */
-static u32 __msix_mask_irq(struct msi_desc *desc, u32 flag)
+u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag)
 {
        u32 mask_bits = desc->masked;
        unsigned offset = desc->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE +
@@ -224,9 +229,14 @@ static u32 __msix_mask_irq(struct msi_desc *desc, u32 flag)
        return mask_bits;
 }
 
+__weak u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag)
+{
+       return default_msix_mask_irq(desc, flag);
+}
+
 static void msix_mask_irq(struct msi_desc *desc, u32 flag)
 {
-       desc->masked = __msix_mask_irq(desc, flag);
+       desc->masked = arch_msix_mask_irq(desc, flag);
 }
 
 static void msi_set_mask_bit(struct irq_data *data, u32 flag)
@@ -902,7 +912,7 @@ void pci_msi_shutdown(struct pci_dev *dev)
        pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &ctrl);
        mask = msi_capable_mask(ctrl);
        /* Keep cached state to be restored */
-       __msi_mask_irq(desc, mask, ~mask);
+       arch_msi_mask_irq(desc, mask, ~mask);
 
        /* Restore dev->irq to its default pin-assertion irq */
        dev->irq = desc->msi_attrib.default_irq;
@@ -998,7 +1008,7 @@ void pci_msix_shutdown(struct pci_dev *dev)
        /* Return the device with MSI-X masked as initial states */
        list_for_each_entry(entry, &dev->msi_list, list) {
                /* Keep cached states to be restored */
-               __msix_mask_irq(entry, 1);
+               arch_msix_mask_irq(entry, 1);
        }
 
        msix_set_enable(dev, 0);