Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / arch / powerpc / platforms / powernv / pci-ioda.c

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 38a5c65..d314ecc 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2718,15 +2718,21 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb,
 }
 
 #ifdef CONFIG_PCI_MSI
-static void pnv_ioda2_msi_eoi(struct irq_data *d)
+int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq)
 {
-       unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
-       struct irq_chip *chip = irq_data_get_irq_chip(d);
        struct pnv_phb *phb = container_of(chip, struct pnv_phb,
                                           ioda.irq_chip);
+
+       return opal_pci_msi_eoi(phb->opal_id, hw_irq);
+}
+
+static void pnv_ioda2_msi_eoi(struct irq_data *d)
+{
        int64_t rc;
+       unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
+       struct irq_chip *chip = irq_data_get_irq_chip(d);
 
-       rc = opal_pci_msi_eoi(phb->opal_id, hw_irq);
+       rc = pnv_opal_pci_msi_eoi(chip, hw_irq);
        WARN_ON_ONCE(rc);
 
        icp_native_eoi(d);
@@ -2756,6 +2762,16 @@ void pnv_set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq)
        irq_set_chip(virq, &phb->ioda.irq_chip);
 }
 
+/*
+ * Returns true iff chip is something that we could call
+ * pnv_opal_pci_msi_eoi for.
+ */
+bool is_pnv_opal_msi(struct irq_chip *chip)
+{
+       return chip->irq_eoi == pnv_ioda2_msi_eoi;
+}
+EXPORT_SYMBOL_GPL(is_pnv_opal_msi);
+
 static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev,
                                  unsigned int hwirq, unsigned int virq,
                                  unsigned int is_64, struct msi_msg *msg)