PCI_MSI_CTL
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write16(pc, tag, off + PCI_MSI_CTL + 2, ctl >> 16);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write16(pc, tag, off + PCI_MSI_CTL + 2, ctl >> 16);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL, ctl);
reg = pci_conf_read(pc, tag, off + PCI_MSI_CTL);
pci_conf_write(pc, tag, off + PCI_MSI_CTL,
pci_conf_write(pc, tag, off + PCI_MSI_CTL, pcs->msi_ctl);
reg = pci_conf_read(pc, tag, offset + PCI_MSI_CTL);
pcs->msi_ctl = pci_conf_read(pc, tag, off + PCI_MSI_CTL);