diff options
Diffstat (limited to 'hw/msi.c')
| -rw-r--r-- | hw/msi.c | 17 |
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) && |