From: Rubin Du <[email protected]> Add vfio_pci_cmd_set()/vfio_pci_cmd_clear() read-modify-write macros for PCI_COMMAND in vfio_pci_device.h.
Signed-off-by: Rubin Du <[email protected]> Signed-off-by: Alex Williamson <[email protected]> --- .../vfio/lib/include/libvfio/vfio_pci_device.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h b/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h index 2858885a89bb..bb4525abd01a 100644 --- a/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h +++ b/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h @@ -65,6 +65,20 @@ void vfio_pci_config_access(struct vfio_pci_device *device, bool write, #define vfio_pci_config_writew(_d, _o, _v) vfio_pci_config_write(_d, _o, _v, u16) #define vfio_pci_config_writel(_d, _o, _v) vfio_pci_config_write(_d, _o, _v, u32) +static inline void vfio_pci_cmd_set(struct vfio_pci_device *device, u16 bits) +{ + u16 cmd = vfio_pci_config_readw(device, PCI_COMMAND); + + vfio_pci_config_writew(device, PCI_COMMAND, cmd | bits); +} + +static inline void vfio_pci_cmd_clear(struct vfio_pci_device *device, u16 bits) +{ + u16 cmd = vfio_pci_config_readw(device, PCI_COMMAND); + + vfio_pci_config_writew(device, PCI_COMMAND, cmd & ~bits); +} + void vfio_pci_irq_enable(struct vfio_pci_device *device, u32 index, u32 vector, int count); void vfio_pci_irq_disable(struct vfio_pci_device *device, u32 index); -- 2.51.0
