dev/gem/if_gem.c

150 	struct gem_txsoft *txs;
244 		txs = &sc->sc_txsoft[i];
245 		txs->txs_mbuf = NULL;
246 		txs->txs_ndescs = 0;
248 		    &txs->txs_dmamap)) != 0) {
254 		STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
660 	struct gem_txsoft *txs;
677 	while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
679 		if (txs->txs_ndescs != 0) {
680 			bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
682 			bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
683 			if (txs->txs_mbuf != NULL) {
684 				m_freem(txs->txs_mbuf);
685 				txs->txs_mbuf = NULL;
688 		STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
1106 	struct gem_txsoft *txs;
1115 	if ((txs = STAILQ_FIRST(&sc->sc_txfreeq)) == NULL) {
1143 	error = bus_dmamap_load_mbuf_sg(sc->sc_tdmatag, txs->txs_dmamap,
1154 		    txs->txs_dmamap, *m_head, txsegs, &nsegs,
1179 		txs->txs_ndescs = 0;
1180 		bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
1184 	txs->txs_ndescs = nsegs;
1185 	txs->txs_firstdesc = sc->sc_txnext;
1186 	nexttx = txs->txs_firstdesc;
1202 		txs->txs_lastdesc = nexttx;
1210 	sc->sc_txdescs[txs->txs_lastdesc].gd_flags |=
1220 		sc->sc_txdescs[txs->txs_firstdesc].gd_flags |=
1224 		sc->sc_txdescs[txs->txs_firstdesc].gd_flags |=
1228 	bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
1233 	    __func__, txs->txs_firstdesc, txs->txs_lastdesc,
1234 	    txs->txs_ndescs);
1237 	STAILQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q);
1238 	txs->txs_mbuf = *m_head;
1240 	sc->sc_txnext = GEM_NEXTTX(txs->txs_lastdesc);
1241 	sc->sc_txfree -= txs->txs_ndescs;
1411 	struct gem_txsoft *txs;
1428 	while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
1431 			printf("    txsoft %p transmit chain:\n", txs);
1432 			for (i = txs->txs_firstdesc;; i = GEM_NEXTTX(i)) {
1440 				if (i == txs->txs_lastdesc)
1455 		CTR4(KTR_GEM, "%s: txs->txs_firstdesc = %d, "
1456 		    "txs->txs_lastdesc = %d, txlast = %d",
1457 		    __func__, txs->txs_firstdesc, txs->txs_lastdesc, txlast);
1459 		if (txs->txs_firstdesc <= txs->txs_lastdesc) {
1460 			if ((txlast >= txs->txs_firstdesc) &&
1461 			    (txlast <= txs->txs_lastdesc))
1465 			if ((txlast >= txs->txs_firstdesc) ||
1466 			    (txlast <= txs->txs_lastdesc))
1475 		sc->sc_txfree += txs->txs_ndescs;
1477 		bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
1479 		bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
1480 		if (txs->txs_mbuf != NULL) {
1481 			m_freem(txs->txs_mbuf);
1482 			txs->txs_mbuf = NULL;
1485 		STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);