+ break;
+ case e1000_82576:
+ /* Kawela uses a table-based method for assigning vectors.
+ Each queue has a single entry in the table to which we write
+ a vector number along with a "valid" bit. Sadly, the layout
+ of the table is somewhat counterintuitive. */
+ if (rx_queue > IGB_N0_QUEUE) {
+ index = (rx_queue & 0x7);
+ ivar = array_rd32(E1000_IVAR0, index);
+ if (rx_queue < 8) {
+ /* vector goes into low byte of register */
+ ivar = ivar & 0xFFFFFF00;
+ ivar |= msix_vector | E1000_IVAR_VALID;
+ } else {
+ /* vector goes into third byte of register */
+ ivar = ivar & 0xFF00FFFF;
+ ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
+ }
+ adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector;
+ array_wr32(E1000_IVAR0, index, ivar);
+ }
+ if (tx_queue > IGB_N0_QUEUE) {
+ index = (tx_queue & 0x7);
+ ivar = array_rd32(E1000_IVAR0, index);
+ if (tx_queue < 8) {
+ /* vector goes into second byte of register */
+ ivar = ivar & 0xFFFF00FF;
+ ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
+ } else {
+ /* vector goes into high byte of register */
+ ivar = ivar & 0x00FFFFFF;
+ ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
+ }
+ adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector;
+ array_wr32(E1000_IVAR0, index, ivar);
+ }
+ break;
+ default:
+ BUG();
+ break;
+ }