powerpc/powernv: Patch MSI EOI handler on P8
The EOI handler of MSI/MSI-X interrupts for P8 (PHB3) need additional
steps to handle the P/Q bits in IVE before EOIing the corresponding
interrupt. The patch changes the EOI handler to cover that. we have
individual IRQ chip in each PHB instance. During the MSI IRQ setup
time, the IRQ chip is copied over from the original one for that IRQ,
and the EOI handler is patched with the one that will handle the P/Q
bits (As Ben suggested).
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index f6314d6..3c552b3 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -79,8 +79,8 @@
struct msi_bitmap msi_bmp;
#endif
int (*msi_setup)(struct pnv_phb *phb, struct pci_dev *dev,
- unsigned int hwirq, unsigned int is_64,
- struct msi_msg *msg);
+ unsigned int hwirq, unsigned int virq,
+ unsigned int is_64, struct msi_msg *msg);
void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev);
void (*fixup_phb)(struct pci_controller *hose);
u32 (*bdfn_to_pe)(struct pnv_phb *phb, struct pci_bus *bus, u32 devfn);
@@ -108,6 +108,10 @@
unsigned int *io_segmap;
struct pnv_ioda_pe *pe_array;
+ /* IRQ chip */
+ int irq_chip_init;
+ struct irq_chip irq_chip;
+
/* Sorted list of used PE's based
* on the sequence of creation
*/