Merge remote-tracking branch 'mst/tags/for_anthony' into staging

* mst/tags/for_anthony:
  msi/msix: added API to set MSI message address and data
  pci: Add INTx routing notifier
  pci: Add pci_device_route_intx_to_irq
  pci: Unregister BARs before device exit
  pci: convert PCIUnregisterFunc to void
  msix: Switch msix_uninit to return void
  msix: Allow full specification of MSIX layout
  msix: Split PBA into it's own MemoryRegion
  msix: Note endian TODO item
  msix: Move msix_mmio_read
  virtio: Convert to msix_init_exclusive_bar() interface
  ivshmem: Convert to msix_init_exclusive_bar() interface
  msix: Add simple BAR allocation MSIX setup functions
  msix: fix PCIDevice naming inconsistency
  msix: drop unused msix_bar_size, require valid bar_size

1 files changed, 17 insertions, 0 deletions

diff --git a/hw/msi.c b/hw/msi.c
index 52332041e7..e2273a09ae 100644
--- a/hw/msi.c
+++ b/hw/msi.c
@@ -105,6 +105,23 @@ static inline uint8_t msi_pending_off(const PCIDevice* dev, bool msi64bit)
     return dev->msi_cap + (msi64bit ? PCI_MSI_PENDING_64 : PCI_MSI_PENDING_32);
 }
 
+/*
+ * Special API for POWER to configure the vectors through
+ * a side channel. Should never be used by devices.
+ */
+void msi_set_message(PCIDevice *dev, MSIMessage msg)
+{
+    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
+    bool msi64bit = flags & PCI_MSI_FLAGS_64BIT;
+
+    if (msi64bit) {
+        pci_set_quad(dev->config + msi_address_lo_off(dev), msg.address);
+    } else {
+        pci_set_long(dev->config + msi_address_lo_off(dev), msg.address);
+    }
+    pci_set_word(dev->config + msi_data_off(dev, msi64bit), msg.data);
+}
+
 bool msi_enabled(const PCIDevice *dev)
 {
     return msi_present(dev) &&