diff options
Diffstat (limited to 'sys/dev/pci/if_sis.c')
| -rw-r--r-- | sys/dev/pci/if_sis.c | 70 |
1 files changed, 38 insertions, 32 deletions
diff --git a/sys/dev/pci/if_sis.c b/sys/dev/pci/if_sis.c index 5fca6dc4f5c..c0f516b47bb 100644 --- a/sys/dev/pci/if_sis.c +++ b/sys/dev/pci/if_sis.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_sis.c,v 1.43 2005/01/15 05:24:11 brad Exp $ */ +/* $OpenBSD: if_sis.c,v 1.44 2005/04/05 00:13:57 brad Exp $ */ /* * Copyright (c) 1997, 1998, 1999 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. @@ -1508,11 +1508,8 @@ int sis_intr(arg) sc = arg; ifp = &sc->arpcom.ac_if; - /* Supress unwanted interrupts */ - if (!(ifp->if_flags & IFF_UP)) { - sis_stop(sc); + if (sc->sis_stopped) /* Most likely shared interrupt */ return claimed; - } /* Disable interrupts. */ CSR_WRITE_4(sc, SIS_IER, 0); @@ -1623,7 +1620,7 @@ void sis_start(ifp) { struct sis_softc *sc; struct mbuf *m_head = NULL; - u_int32_t idx; + u_int32_t idx, queued = 0; sc = ifp->if_softc; @@ -1648,6 +1645,8 @@ void sis_start(ifp) /* now we are committed to transmit the packet */ IFQ_DEQUEUE(&ifp->if_snd, m_head); + queued++; + /* * If there's a BPF listener, bounce a copy of this frame * to him. @@ -1657,17 +1656,17 @@ void sis_start(ifp) bpf_mtap(ifp->if_bpf, m_head); #endif } - if (idx == sc->sis_cdata.sis_tx_prod) - return; - /* Transmit */ - sc->sis_cdata.sis_tx_prod = idx; - SIS_SETBIT(sc, SIS_CSR, SIS_CSR_TX_ENABLE); + if (queued) { + /* Transmit */ + sc->sis_cdata.sis_tx_prod = idx; + SIS_SETBIT(sc, SIS_CSR, SIS_CSR_TX_ENABLE); - /* - * Set a timeout in case the chip goes out to lunch. - */ - ifp->if_timer = 5; + /* + * Set a timeout in case the chip goes out to lunch. + */ + ifp->if_timer = 5; + } return; } @@ -1728,14 +1727,14 @@ void sis_init(xsc) sis_list_tx_init(sc); /* - * Page 78 of the DP83815 data sheet (september 2002 version) + * Short Cable Receive Errors (MP21.E) + * also: Page 78 of the DP83815 data sheet (september 2002 version) * recommends the following register settings "for optimum * performance." for rev 15C. The driver from NS also sets * the PHY_CR register for later versions. */ - if (sc->sis_type == SIS_TYPE_83815) { + if (sc->sis_type == SIS_TYPE_83815 && sc->sis_srr <= NS_SRR_15D) { CSR_WRITE_4(sc, NS_PHY_PAGE, 0x0001); - /* DC speed = 01 */ CSR_WRITE_4(sc, NS_PHY_CR, 0x189C); if (sc->sis_srr == NS_SRR_15C) { /* set val for c2 */ @@ -1817,32 +1816,34 @@ void sis_init(xsc) SIS_CLRBIT(sc, SIS_RX_CFG, SIS_RXCFG_RX_TXPKTS); } + if (sc->sis_type == SIS_TYPE_83815 && sc->sis_srr >= NS_SRR_16A) { + /* + * MPII03.D: Half Duplex Excessive Collisions. + * Also page 49 in 83816 manual + */ + SIS_SETBIT(sc, SIS_TX_CFG, SIS_TXCFG_MPII03D); + } + if (sc->sis_type == SIS_TYPE_83815 && sc->sis_srr < NS_SRR_16A && IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) { uint32_t reg; /* - * Some DP83815s experience problems when used with short - * (< 30m/100ft) Ethernet cables in 100BaseTX mode. This - * sequence adjusts the DSP's signal attenuation to fix the - * problem. + * Short Cable Receive Errors (MP21.E) */ CSR_WRITE_4(sc, NS_PHY_PAGE, 0x0001); - - reg = CSR_READ_4(sc, NS_PHY_DSPCFG); - /* Allow coefficient to be read */ - CSR_WRITE_4(sc, NS_PHY_DSPCFG, (reg & 0xfff) | 0x1000); - DELAY(100); - reg = CSR_READ_4(sc, NS_PHY_TDATA); - if ((reg & 0x0080) == 0 || - (reg > 0xd8 && reg <= 0xff)) { + reg = CSR_READ_4(sc, NS_PHY_DSPCFG) & 0xfff; + CSR_WRITE_4(sc, NS_PHY_DSPCFG, reg | 0x1000); + DELAY(100000); + reg = CSR_READ_4(sc, NS_PHY_TDATA) & 0xff; + if ((reg & 0x0080) == 0 || (reg > 0xd8 && reg <= 0xff)) { #ifdef DEBUG printf("%s: Applying short cable fix (reg=%x)\n", sc->sc_dev.dv_xname, reg); #endif CSR_WRITE_4(sc, NS_PHY_TDATA, 0x00e8); - /* Adjust coefficient and prevent change */ - SIS_SETBIT(sc, NS_PHY_DSPCFG, 0x20); + reg = CSR_READ_4(sc, NS_PHY_DSPCFG); + SIS_SETBIT(sc, NS_PHY_DSPCFG, reg | 0x20); } CSR_WRITE_4(sc, NS_PHY_PAGE, 0); } @@ -1998,6 +1999,10 @@ void sis_watchdog(ifp) sc = ifp->if_softc; + if (sc->sis_stopped) { + return; + } + ifp->if_oerrors++; printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname); @@ -2032,6 +2037,7 @@ void sis_stop(sc) timeout_del(&sc->sis_timeout); CSR_WRITE_4(sc, SIS_IER, 0); CSR_WRITE_4(sc, SIS_IMR, 0); + CSR_READ_4(sc, SIS_ISR); /* clear any interrupts already pending */ SIS_SETBIT(sc, SIS_CSR, SIS_CSR_TX_DISABLE|SIS_CSR_RX_DISABLE); DELAY(1000); CSR_WRITE_4(sc, SIS_TX_LISTPTR, 0); |