PCIM_MSICTRL_MSI_ENABLE
msi->msi_ctrl |= PCIM_MSICTRL_MSI_ENABLE;
msi->msi_ctrl &= ~PCIM_MSICTRL_MSI_ENABLE;
if (msi->msi_ctrl & PCIM_MSICTRL_MSI_ENABLE) {
KASSERT(!(msi->msi_ctrl & PCIM_MSICTRL_MSI_ENABLE),
PCIM_MSICTRL_MSI_ENABLE, 2);
if (ctrl & PCIM_MSICTRL_MSI_ENABLE) {