MHI_BHI_STATUS
qwx_pci_write(sc, psc->bhi_off + MHI_BHI_STATUS, 0);
reg = qwx_pci_read(sc, psc->bhi_off + MHI_BHI_STATUS);
reg = qwx_pci_read(sc, psc->bhi_off + MHI_BHI_STATUS);
qwz_pci_write(sc, psc->bhi_off + MHI_BHI_STATUS, 0);
reg = qwz_pci_read(sc, psc->bhi_off + MHI_BHI_STATUS);
reg = qwz_pci_read(sc, psc->bhi_off + MHI_BHI_STATUS);