diff options
Diffstat (limited to 'hw/msi.c')
| -rw-r--r-- | hw/msi.c | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -175,7 +175,7 @@ void msi_uninit(struct PCIDevice *dev) uint16_t flags; uint8_t cap_size; - if (!(dev->cap_present & QEMU_PCI_CAP_MSI)) { + if (!msi_present(dev)) { return; } flags = pci_get_word(dev->config + msi_flags_off(dev)); @@ -191,6 +191,10 @@ void msi_reset(PCIDevice *dev) uint16_t flags; bool msi64bit; + if (!msi_present(dev)) { + return; + } + flags = pci_get_word(dev->config + msi_flags_off(dev)); flags &= ~(PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE); msi64bit = flags & PCI_MSI_FLAGS_64BIT; @@ -260,7 +264,7 @@ void msi_notify(PCIDevice *dev, unsigned int vector) stl_le_phys(address, data); } -/* call this function after updating configs by pci_default_write_config(). */ +/* Normally called by pci_default_write_config(). */ void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len) { uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); @@ -272,7 +276,8 @@ void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len) unsigned int vector; uint32_t pending; - if (!ranges_overlap(addr, len, dev->msi_cap, msi_cap_sizeof(flags))) { + if (!msi_present(dev) || + !ranges_overlap(addr, len, dev->msi_cap, msi_cap_sizeof(flags))) { return; } |