diff options
Diffstat (limited to 'hw/pci/msi.c')
| -rw-r--r-- | hw/pci/msi.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/hw/pci/msi.c b/hw/pci/msi.c index 916e1a1e5b..2949938223 100644 --- a/hw/pci/msi.c +++ b/hw/pci/msi.c @@ -72,7 +72,7 @@ static inline uint8_t msi_cap_sizeof(uint16_t flags) static inline unsigned int msi_nr_vectors(uint16_t flags) { return 1U << - ((flags & PCI_MSI_FLAGS_QSIZE) >> (ffs(PCI_MSI_FLAGS_QSIZE) - 1)); + ((flags & PCI_MSI_FLAGS_QSIZE) >> ctz32(PCI_MSI_FLAGS_QSIZE)); } static inline uint8_t msi_flags_off(const PCIDevice* dev) @@ -175,9 +175,9 @@ int msi_init(struct PCIDevice *dev, uint8_t offset, assert(nr_vectors > 0); assert(nr_vectors <= PCI_MSI_VECTORS_MAX); /* the nr of MSI vectors is up to 32 */ - vectors_order = ffs(nr_vectors) - 1; + vectors_order = ctz32(nr_vectors); - flags = vectors_order << (ffs(PCI_MSI_FLAGS_QMASK) - 1); + flags = vectors_order << ctz32(PCI_MSI_FLAGS_QMASK); if (msi64bit) { flags |= PCI_MSI_FLAGS_64BIT; } @@ -355,12 +355,12 @@ void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len) * just don't crash the host */ log_num_vecs = - (flags & PCI_MSI_FLAGS_QSIZE) >> (ffs(PCI_MSI_FLAGS_QSIZE) - 1); + (flags & PCI_MSI_FLAGS_QSIZE) >> ctz32(PCI_MSI_FLAGS_QSIZE); log_max_vecs = - (flags & PCI_MSI_FLAGS_QMASK) >> (ffs(PCI_MSI_FLAGS_QMASK) - 1); + (flags & PCI_MSI_FLAGS_QMASK) >> ctz32(PCI_MSI_FLAGS_QMASK); if (log_num_vecs > log_max_vecs) { flags &= ~PCI_MSI_FLAGS_QSIZE; - flags |= log_max_vecs << (ffs(PCI_MSI_FLAGS_QSIZE) - 1); + flags |= log_max_vecs << ctz32(PCI_MSI_FLAGS_QSIZE); pci_set_word(dev->config + msi_flags_off(dev), flags); } |