dev/cas/if_cas.c

185 	struct cas_txsoft *txs;
289 		txs = &sc->sc_txsoft[i];
290 		txs->txs_mbuf = NULL;
291 		txs->txs_ndescs = 0;
293 		    &txs->txs_dmamap)) != 0) {
299 		STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
723 	struct cas_txsoft *txs;
741 	while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
743 		if (txs->txs_ndescs != 0) {
744 			bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
746 			bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
747 			if (txs->txs_mbuf != NULL) {
748 				m_freem(txs->txs_mbuf);
749 				txs->txs_mbuf = NULL;
752 		STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
1190 	struct cas_txsoft *txs;
1199 	if ((txs = STAILQ_FIRST(&sc->sc_txfreeq)) == NULL) {
1227 	error = bus_dmamap_load_mbuf_sg(sc->sc_tdmatag, txs->txs_dmamap,
1238 		    txs->txs_dmamap, *m_head, txsegs, &nsegs,
1263 		txs->txs_ndescs = 0;
1264 		bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
1268 	txs->txs_ndescs = nsegs;
1269 	txs->txs_firstdesc = sc->sc_txnext;
1270 	nexttx = txs->txs_firstdesc;
1285 		txs->txs_lastdesc = nexttx;
1293 	sc->sc_txdescs[txs->txs_lastdesc].cd_flags |=
1303 		sc->sc_txdescs[txs->txs_firstdesc].cd_flags |=
1306 		sc->sc_txdescs[txs->txs_firstdesc].cd_flags |=
1310 	bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
1315 	    __func__, txs->txs_firstdesc, txs->txs_lastdesc,
1316 	    txs->txs_ndescs);
1319 	STAILQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q);
1320 	txs->txs_mbuf = *m_head;
1322 	sc->sc_txnext = CAS_NEXTTX(txs->txs_lastdesc);
1323 	sc->sc_txfree -= txs->txs_ndescs;
1507 	struct cas_txsoft *txs;
1524 	while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
1527 			printf("    txsoft %p transmit chain:\n", txs);
1528 			for (i = txs->txs_firstdesc;; i = CAS_NEXTTX(i)) {
1536 				if (i == txs->txs_lastdesc)
1551 		CTR4(KTR_CAS, "%s: txs->txs_firstdesc = %d, "
1552 		    "txs->txs_lastdesc = %d, txlast = %d",
1553 		    __func__, txs->txs_firstdesc, txs->txs_lastdesc, txlast);
1555 		if (txs->txs_firstdesc <= txs->txs_lastdesc) {
1556 			if ((txlast >= txs->txs_firstdesc) &&
1557 			    (txlast <= txs->txs_lastdesc))
1561 			if ((txlast >= txs->txs_firstdesc) ||
1562 			    (txlast <= txs->txs_lastdesc))
1571 		sc->sc_txfree += txs->txs_ndescs;
1573 		bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
1575 		bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
1576 		if (txs->txs_mbuf != NULL) {
1577 			m_freem(txs->txs_mbuf);
1578 			txs->txs_mbuf = NULL;
1581 		STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);