mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-14 10:09:48 +00:00
Merge in some updates for the RealTek driver, mainly:
- Rewrite the transmit section to be a little less bogus. - Set ifq_maxlen correctly. RL_TX_LIST_CNT - 1 is wrong, because for the RealTek, RL_TX_LIST_CNT is 4. Set it to IFQ_MAXLEN instead.
This commit is contained in:
Bill Paul
parent
d90ce12302
commit
ea716519f5
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=45633
201
sys/pci/if_rl.c
201
sys/pci/if_rl.c
@ -29,7 +29,7 @@
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: if_rl.c,v 1.22 1999/02/23 06:42:42 wpaul Exp $
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* $Id: if_rl.c,v 1.30 1999/04/12 21:32:17 wpaul Exp $
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*/
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/*
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@ -127,7 +127,7 @@
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#ifndef lint
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static const char rcsid[] =
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"$Id: if_rl.c,v 1.22 1999/02/23 06:42:42 wpaul Exp $";
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"$Id: if_rl.c,v 1.30 1999/04/12 21:32:17 wpaul Exp $";
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#endif
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/*
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@ -167,12 +167,10 @@ static unsigned long rl_count = 0;
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static const char *rl_probe __P((pcici_t, pcidi_t));
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static void rl_attach __P((pcici_t, int));
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static int rl_encap __P((struct rl_softc *, struct rl_chain *,
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struct mbuf * ));
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static int rl_encap __P((struct rl_softc *, struct mbuf * ));
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static void rl_rxeof __P((struct rl_softc *));
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static void rl_txeof __P((struct rl_softc *));
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static void rl_txeoc __P((struct rl_softc *));
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static void rl_intr __P((void *));
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static void rl_start __P((struct ifnet *));
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static int rl_ioctl __P((struct ifnet *, u_long, caddr_t));
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@ -748,7 +746,7 @@ static void rl_autoneg_mii(sc, flag, verbose)
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* our timeout, and we don't want to allow transmission
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* during an autoneg session since that can screw it up.
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*/
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if (sc->rl_cdata.rl_tx_cnt) {
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if (sc->rl_cdata.last_tx != sc->rl_cdata.cur_tx) {
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sc->rl_want_auto = 1;
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return;
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}
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@ -1027,7 +1025,7 @@ rl_attach(config_id, unit)
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sc = malloc(sizeof(struct rl_softc), M_DEVBUF, M_NOWAIT);
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if (sc == NULL) {
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printf("rl%d: no memory for softc struct!\n", unit);
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return;
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goto fail;
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}
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bzero(sc, sizeof(struct rl_softc));
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@ -1155,7 +1153,7 @@ rl_attach(config_id, unit)
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ifp->if_watchdog = rl_watchdog;
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ifp->if_init = rl_init;
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ifp->if_baudrate = 10000000;
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ifp->if_snd.ifq_maxlen = RL_TX_LIST_CNT - 1;
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ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
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if (sc->rl_type == RL_8129) {
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if (bootverbose)
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@ -1240,17 +1238,12 @@ static int rl_list_tx_init(sc)
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cd = &sc->rl_cdata;
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for (i = 0; i < RL_TX_LIST_CNT; i++) {
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cd->rl_tx_chain[i].rl_desc = i * 4;
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CSR_WRITE_4(sc, RL_TXADDR0 + cd->rl_tx_chain[i].rl_desc, 0);
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CSR_WRITE_4(sc, RL_TXSTAT0 + cd->rl_tx_chain[i].rl_desc, 0);
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if (i == (RL_TX_LIST_CNT - 1))
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cd->rl_tx_chain[i].rl_next = &cd->rl_tx_chain[0];
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else
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cd->rl_tx_chain[i].rl_next = &cd->rl_tx_chain[i + 1];
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cd->rl_tx_chain[i] = NULL;
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CSR_WRITE_4(sc, RL_TXADDR0 + i, 0x0000000);
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}
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sc->rl_cdata.rl_tx_cnt = 0;
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cd->rl_tx_cur = cd->rl_tx_free = &cd->rl_tx_chain[0];
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sc->rl_cdata.cur_tx = 0;
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sc->rl_cdata.last_tx = 0;
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return(0);
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}
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@ -1424,7 +1417,6 @@ static void rl_rxeof(sc)
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static void rl_txeof(sc)
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struct rl_softc *sc;
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{
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struct rl_chain *cur_tx;
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struct ifnet *ifp;
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u_int32_t txstat;
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@ -1437,84 +1429,33 @@ static void rl_txeof(sc)
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* Go through our tx list and free mbufs for those
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* frames that have been uploaded.
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*/
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if (sc->rl_cdata.rl_tx_free == NULL)
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return;
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while(sc->rl_cdata.rl_tx_free->rl_mbuf != NULL) {
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cur_tx = sc->rl_cdata.rl_tx_free;
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txstat = CSR_READ_4(sc, RL_TXSTAT0 + cur_tx->rl_desc);
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if (!(txstat & RL_TXSTAT_TX_OK))
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do {
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txstat = CSR_READ_4(sc, RL_LAST_TXSTAT(sc));
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if (!(txstat & (RL_TXSTAT_TX_OK|
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RL_TXSTAT_TX_UNDERRUN|RL_TXSTAT_TXABRT)))
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break;
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if (txstat & RL_TXSTAT_COLLCNT)
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ifp->if_collisions +=
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(txstat & RL_TXSTAT_COLLCNT) >> 24;
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ifp->if_collisions += (txstat & RL_TXSTAT_COLLCNT) >> 24;
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sc->rl_cdata.rl_tx_free = cur_tx->rl_next;
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sc->rl_cdata.rl_tx_cnt--;
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m_freem(cur_tx->rl_mbuf);
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cur_tx->rl_mbuf = NULL;
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ifp->if_opackets++;
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}
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if (!sc->rl_cdata.rl_tx_cnt) {
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if (RL_LAST_TXMBUF(sc) != NULL) {
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m_freem(RL_LAST_TXMBUF(sc));
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RL_LAST_TXMBUF(sc) = NULL;
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}
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if (txstat & RL_TXSTAT_TX_OK)
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ifp->if_opackets++;
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else {
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ifp->if_oerrors++;
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if ((txstat & RL_TXSTAT_TXABRT) ||
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(txstat & RL_TXSTAT_OUTOFWIN))
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CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG);
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}
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RL_INC(sc->rl_cdata.last_tx);
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ifp->if_flags &= ~IFF_OACTIVE;
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} while (sc->rl_cdata.last_tx != sc->rl_cdata.cur_tx);
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if (sc->rl_cdata.last_tx == sc->rl_cdata.cur_tx) {
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if (sc->rl_want_auto)
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rl_autoneg_mii(sc, RL_FLAG_SCHEDDELAY, 1);
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} else {
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if (ifp->if_snd.ifq_head != NULL)
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rl_start(ifp);
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}
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return;
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}
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/*
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* TX error handler.
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*/
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static void rl_txeoc(sc)
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struct rl_softc *sc;
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{
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u_int32_t txstat;
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struct rl_chain *cur_tx;
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struct ifnet *ifp;
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ifp = &sc->arpcom.ac_if;
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if (sc->rl_cdata.rl_tx_free == NULL)
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return;
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while(sc->rl_cdata.rl_tx_free->rl_mbuf != NULL) {
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cur_tx = sc->rl_cdata.rl_tx_free;
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txstat = CSR_READ_4(sc, RL_TXSTAT0 + cur_tx->rl_desc);
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if (!(txstat & RL_TXSTAT_OWN))
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break;
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if (!(txstat & RL_TXSTAT_TX_OK)) {
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ifp->if_oerrors++;
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if (txstat & RL_TXSTAT_COLLCNT)
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ifp->if_collisions +=
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(txstat & RL_TXSTAT_COLLCNT) >> 24;
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CSR_WRITE_4(sc, RL_TXADDR0 + cur_tx->rl_desc,
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vtophys(mtod(cur_tx->rl_mbuf, caddr_t)));
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CSR_WRITE_4(sc, RL_TXSTAT0 + cur_tx->rl_desc,
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RL_TX_EARLYTHRESH |
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cur_tx->rl_mbuf->m_pkthdr.len);
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break;
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} else {
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if (txstat & RL_TXSTAT_COLLCNT)
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ifp->if_collisions +=
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(txstat & RL_TXSTAT_COLLCNT) >> 24;
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sc->rl_cdata.rl_tx_free = cur_tx->rl_next;
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sc->rl_cdata.rl_tx_cnt--;
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m_freem(cur_tx->rl_mbuf);
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cur_tx->rl_mbuf = NULL;
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ifp->if_opackets++;
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}
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}
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return;
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@ -1548,12 +1489,9 @@ static void rl_intr(arg)
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if (status & RL_ISR_RX_ERR)
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rl_rxeof(sc);
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if (status & RL_ISR_TX_OK)
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if ((status & RL_ISR_TX_OK) || (status & RL_ISR_TX_ERR))
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rl_txeof(sc);
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if (status & RL_ISR_TX_ERR)
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rl_txeoc(sc);
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if (status & RL_ISR_SYSTEM_ERR) {
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rl_reset(sc);
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rl_init(sc);
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@ -1575,29 +1513,18 @@ static void rl_intr(arg)
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* Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
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* pointers to the fragment pointers.
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*/
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static int rl_encap(sc, c, m_head)
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static int rl_encap(sc, m_head)
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struct rl_softc *sc;
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struct rl_chain *c;
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struct mbuf *m_head;
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{
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struct mbuf *m;
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struct mbuf *m_new = NULL;
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/*
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* There are two possible encapsulation mechanisms
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* that we can use: an efficient one, and a very lossy
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* one. The efficient one only happens very rarely,
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* whereas the lossy one can and most likely will happen
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* all the time.
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* The efficient case happens if:
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* - the packet fits in a single mbuf
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* - the packet is 32-bit aligned within the mbuf data area
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* In this case, we can DMA from the mbuf directly.
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* The lossy case covers everything else. Bah.
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* The RealTek is brain damaged and wants longword-aligned
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* TX buffers, plus we can only have one fragment buffer
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* per packet. We have to copy pretty much all the time.
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*/
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m = m_head;
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MGETHDR(m_new, M_DONTWAIT, MT_DATA);
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if (m_new == NULL) {
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printf("rl%d: no memory for tx list", sc->rl_unit);
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@ -1625,7 +1552,7 @@ static int rl_encap(sc, c, m_head)
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m_head->m_len = m_head->m_pkthdr.len;
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}
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c->rl_mbuf = m_head;
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RL_CUR_TXMBUF(sc) = m_head;
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return(0);
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}
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@ -1639,7 +1566,6 @@ static void rl_start(ifp)
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{
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struct rl_softc *sc;
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struct mbuf *m_head = NULL;
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struct rl_chain *cur_tx = NULL;
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sc = ifp->if_softc;
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@ -1648,28 +1574,12 @@ static void rl_start(ifp)
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return;
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}
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/*
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* Check for an available queue slot. If there are none,
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* punt.
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*/
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if (sc->rl_cdata.rl_tx_cur->rl_mbuf != NULL) {
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ifp->if_flags |= IFF_OACTIVE;
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return;
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}
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while(sc->rl_cdata.rl_tx_cur->rl_mbuf == NULL) {
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while(RL_CUR_TXMBUF(sc) == NULL) {
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IF_DEQUEUE(&ifp->if_snd, m_head);
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if (m_head == NULL)
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break;
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/* Pick a descriptor off the free list. */
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cur_tx = sc->rl_cdata.rl_tx_cur;
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sc->rl_cdata.rl_tx_cur = cur_tx->rl_next;
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sc->rl_cdata.rl_tx_cnt++;
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/* Pack the data into the descriptor. */
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rl_encap(sc, cur_tx, m_head);
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rl_encap(sc, m_head);
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#if NBPFILTER > 0
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/*
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@ -1677,17 +1587,27 @@ static void rl_start(ifp)
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* to him.
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*/
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if (ifp->if_bpf)
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bpf_mtap(ifp, cur_tx->rl_mbuf);
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bpf_mtap(ifp, RL_CUR_TXMBUF(sc));
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#endif
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/*
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* Transmit the frame.
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*/
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CSR_WRITE_4(sc, RL_TXADDR0 + cur_tx->rl_desc,
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vtophys(mtod(cur_tx->rl_mbuf, caddr_t)));
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CSR_WRITE_4(sc, RL_TXSTAT0 + cur_tx->rl_desc,
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RL_TX_EARLYTHRESH | cur_tx->rl_mbuf->m_pkthdr.len);
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CSR_WRITE_4(sc, RL_CUR_TXADDR(sc),
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vtophys(mtod(RL_CUR_TXMBUF(sc), caddr_t)));
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CSR_WRITE_4(sc, RL_CUR_TXSTAT(sc),
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RL_TX_EARLYTHRESH | RL_CUR_TXMBUF(sc)->m_pkthdr.len);
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RL_INC(sc->rl_cdata.cur_tx);
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}
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/*
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* We broke out of the loop because all our TX slots are
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* full. Mark the NIC as busy until it drains some of the
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* packets from the queue.
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*/
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if (RL_CUR_TXMBUF(sc) != NULL)
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ifp->if_flags |= IFF_OACTIVE;
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/*
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* Set a timeout in case the chip goes out to lunch.
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*/
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@ -1741,8 +1661,9 @@ static void rl_init(xsc)
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CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_TX_ENB|RL_CMD_RX_ENB);
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/*
|
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* Set the buffer size values.
|
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* Set the initial TX and RX configuration.
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*/
|
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CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG);
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CSR_WRITE_4(sc, RL_RXCFG, RL_RXCFG_CONFIG);
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/* Set the individual bit to receive frames for this host only. */
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@ -1931,7 +1852,6 @@ static void rl_watchdog(ifp)
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if (!(rl_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT))
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printf("rl%d: no carrier - transceiver cable problem?\n",
|
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sc->rl_unit);
|
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rl_txeoc(sc);
|
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rl_txeof(sc);
|
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rl_rxeof(sc);
|
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rl_init(sc);
|
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@ -1959,11 +1879,10 @@ static void rl_stop(sc)
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* Free the TX list buffers.
|
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*/
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for (i = 0; i < RL_TX_LIST_CNT; i++) {
|
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if (sc->rl_cdata.rl_tx_chain[i].rl_mbuf != NULL) {
|
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m_freem(sc->rl_cdata.rl_tx_chain[i].rl_mbuf);
|
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sc->rl_cdata.rl_tx_chain[i].rl_mbuf = NULL;
|
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CSR_WRITE_4(sc, RL_TXADDR0 +
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sc->rl_cdata.rl_tx_chain[i].rl_desc, 0x00000000);
|
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if (sc->rl_cdata.rl_tx_chain[i] != NULL) {
|
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m_freem(sc->rl_cdata.rl_tx_chain[i]);
|
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sc->rl_cdata.rl_tx_chain[i] = NULL;
|
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CSR_WRITE_4(sc, RL_TXADDR0 + i, 0x0000000);
|
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}
|
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}
|
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|
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|
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@ -29,7 +29,7 @@
|
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
||||
* THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* $Id: if_rlreg.h,v 1.16 1999/02/23 06:42:42 wpaul Exp $
|
||||
* $Id: if_rlreg.h,v 1.17 1999/04/06 01:10:59 wpaul Exp $
|
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*/
|
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|
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/*
|
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@ -104,14 +104,19 @@
|
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* TX config register bits
|
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*/
|
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#define RL_TXCFG_CLRABRT 0x00000001 /* retransmit aborted pkt */
|
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#define RL_TXCFG_MXDMA0 0x00000100 /* max DMA burst size */
|
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#define RL_TXCFG_MXDMA1 0x00000200
|
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#define RL_TXCFG_MXDMA2 0x00000400
|
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#define RL_TXCFG_MAXDMA 0x00000700 /* max DMA burst size */
|
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#define RL_TXCFG_CRCAPPEND 0x00010000 /* CRC append (0 = yes) */
|
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#define RL_TXCFG_LOOPBKTST0 0x00020000 /* loopback test */
|
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#define RL_TXCFG_LOOPBKTST1 0x00040000 /* loopback test */
|
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#define RL_TXCFG_IFG0 0x01000000 /* interframe gap */
|
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#define RL_TXCFG_IFG1 0x02000000 /* interframe gap */
|
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#define RL_TXCFG_LOOPBKTST 0x00060000 /* loopback test */
|
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#define RL_TXCFG_IFG 0x03000000 /* interframe gap */
|
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|
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#define RL_TXDMA_16BYTES 0x00000000
|
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#define RL_TXDMA_32BYTES 0x00000100
|
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#define RL_TXDMA_64BYTES 0x00000200
|
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#define RL_TXDMA_128BYTES 0x00000300
|
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#define RL_TXDMA_256BYTES 0x00000400
|
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#define RL_TXDMA_512BYTES 0x00000500
|
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#define RL_TXDMA_1024BYTES 0x00000600
|
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#define RL_TXDMA_2048BYTES 0x00000700
|
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|
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/*
|
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* Transmit descriptor status register bits.
|
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@ -165,15 +170,33 @@
|
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#define RL_RXCFG_RX_RUNT 0x00000010
|
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#define RL_RXCFG_RX_ERRPKT 0x00000020
|
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#define RL_RXCFG_WRAP 0x00000080
|
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#define RL_RXCFG_MAXDMA (0x00000100|0x00000200|0x00000400)
|
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#define RL_RXCFG_BUFSZ (0x00000800|0x00001000)
|
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#define RL_RXCFG_FIFOTHRESH (0x00002000|0x00004000|0x00008000)
|
||||
#define RL_RXCFG_EARLYTHRESH (0x01000000|0x02000000|0x04000000)
|
||||
#define RL_RXCFG_MAXDMA 0x00000700
|
||||
#define RL_RXCFG_BUFSZ 0x00001800
|
||||
#define RL_RXCFG_FIFOTHRESH 0x0000E000
|
||||
#define RL_RXCFG_EARLYTHRESH 0x07000000
|
||||
|
||||
#define RL_RXDMA_16BYTES 0x00000000
|
||||
#define RL_RXDMA_32BYTES 0x00000100
|
||||
#define RL_RXDMA_64BYTES 0x00000200
|
||||
#define RL_RXDMA_128BYTES 0x00000300
|
||||
#define RL_RXDMA_256BYTES 0x00000400
|
||||
#define RL_RXDMA_512BYTES 0x00000500
|
||||
#define RL_RXDMA_1024BYTES 0x00000600
|
||||
#define RL_RXDMA_UNLIMITED 0x00000700
|
||||
|
||||
#define RL_RXBUF_8 0x00000000
|
||||
#define RL_RXBUF_16 0x00000800
|
||||
#define RL_RXBUF_32 0x00001000
|
||||
#define RL_RXBUF_64 (0x00001000|0x00000800)
|
||||
#define RL_RXBUF_64 0x00001800
|
||||
|
||||
#define RL_RXFIFO_16BYTES 0x00000000
|
||||
#define RL_RXFIFO_32BYTES 0x00002000
|
||||
#define RL_RXFIFO_64BYTES 0x00004000
|
||||
#define RL_RXFIFO_128BYTES 0x00006000
|
||||
#define RL_RXFIFO_256BYTES 0x00008000
|
||||
#define RL_RXFIFO_512BYTES 0x0000A000
|
||||
#define RL_RXFIFO_1024BYTES 0x0000C000
|
||||
#define RL_RXFIFO_NOTHRESH 0x0000E000
|
||||
|
||||
/*
|
||||
* Bits in RX status header (included with RX'ed packet
|
||||
@ -276,28 +299,31 @@
|
||||
#define RL_RXBUFLEN (1 << ((RL_RX_BUF_SZ >> 11) + 13))
|
||||
#define RL_TX_LIST_CNT 4
|
||||
#define RL_MIN_FRAMELEN 60
|
||||
#define RL_TX_EARLYTHRESH 0x80000 /* 256 << 11 */
|
||||
#define RL_RX_FIFOTHRESH 0x8000 /* 4 << 13 */
|
||||
#define RL_RX_MAXDMA 0x00000400
|
||||
#define RL_TX_EARLYTHRESH 0x00300000 /* 1536 << 11 */
|
||||
#define RL_RX_FIFOTHRESH RL_RXFIFO_NOTHRESH
|
||||
#define RL_RX_MAXDMA RL_RXDMA_64BYTES
|
||||
#define RL_TX_MAXDMA RL_TXDMA_64BYTES
|
||||
|
||||
#define RL_RXCFG_CONFIG (RL_RX_FIFOTHRESH|RL_RX_BUF_SZ)
|
||||
|
||||
struct rl_chain {
|
||||
char rl_desc; /* descriptor register idx */
|
||||
struct mbuf *rl_mbuf;
|
||||
struct rl_chain *rl_next;
|
||||
};
|
||||
#define RL_RXCFG_CONFIG (RL_RX_FIFOTHRESH|RL_RX_MAXDMA|RL_RX_BUF_SZ)
|
||||
#define RL_TXCFG_CONFIG (RL_TXCFG_IFG|RL_TX_MAXDMA)
|
||||
|
||||
struct rl_chain_data {
|
||||
u_int16_t cur_rx;
|
||||
caddr_t rl_rx_buf;
|
||||
struct rl_chain rl_tx_chain[RL_TX_LIST_CNT];
|
||||
|
||||
int rl_tx_cnt;
|
||||
struct rl_chain *rl_tx_cur;
|
||||
struct rl_chain *rl_tx_free;
|
||||
struct mbuf *rl_tx_chain[RL_TX_LIST_CNT];
|
||||
u_int8_t last_tx;
|
||||
u_int8_t cur_tx;
|
||||
};
|
||||
|
||||
#define RL_INC(x) (x = (x + 1) % RL_TX_LIST_CNT)
|
||||
#define RL_CUR_TXADDR(x) ((x->rl_cdata.cur_tx * 4) + RL_TXADDR0)
|
||||
#define RL_CUR_TXSTAT(x) ((x->rl_cdata.cur_tx * 4) + RL_TXSTAT0)
|
||||
#define RL_CUR_TXMBUF(x) (x->rl_cdata.rl_tx_chain[x->rl_cdata.cur_tx])
|
||||
#define RL_LAST_TXADDR(x) ((x->rl_cdata.last_tx * 4) + RL_TXADDR0)
|
||||
#define RL_LAST_TXSTAT(x) ((x->rl_cdata.last_tx * 4) + RL_TXSTAT0)
|
||||
#define RL_LAST_TXMBUF(x) (x->rl_cdata.rl_tx_chain[x->rl_cdata.last_tx])
|
||||
|
||||
struct rl_type {
|
||||
u_int16_t rl_vid;
|
||||
u_int16_t rl_did;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user