MHI_ER_DATA
MHI_ER_DATA, psc->mhi_irq[MHI_ER_DATA], 1, 256);
psc->mhi_irq[MHI_ER_DATA] = 2;
msivec = psc->mhi_irq[MHI_ER_DATA];
MHI_ER_DATA, psc->mhi_irq[MHI_ER_DATA], 1, 256);
psc->mhi_irq[MHI_ER_DATA] = 2;
msivec = psc->mhi_irq[MHI_ER_DATA];