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| author | Krzysztof Hałasa <khc@pm.waw.pl> | 2008-07-09 20:01:23 +0200 |
|---|---|---|
| committer | Krzysztof Hałasa <khc@pm.waw.pl> | 2008-11-22 02:49:47 +0100 |
| commit | b0942f78dd6493c5590cc80fedd5e3b357a15334 (patch) | |
| tree | 386dfc7475e33452a145ea0567dc344c27e8b860 /drivers/net/wan/hd64572.c | |
| parent | 09fd65aa8ac934ea4ce7e55945a687292731e9c9 (diff) | |
| download | linux-b0942f78dd6493c5590cc80fedd5e3b357a15334.tar.gz | |
WAN: HD64572 already handles TX underruns with DMAC.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Diffstat (limited to 'drivers/net/wan/hd64572.c')
| -rw-r--r-- | drivers/net/wan/hd64572.c | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c index e332fe906aba..bdb625080a16 100644 --- a/drivers/net/wan/hd64572.c +++ b/drivers/net/wan/hd64572.c @@ -232,19 +232,12 @@ static inline void sca_msci_intr(port_t *port) { u16 msci = get_msci(port); card_t* card = port_to_card(port); - u8 stat = sca_in(msci + ST1, card); /* read MSCI ST1 status */ - /* Reset MSCI TX underrun and CDCD status bit */ - sca_out(stat & (ST1_UDRN | ST1_CDCD), msci + ST1, card); - - if (stat & ST1_UDRN) { - /* TX Underrun error detected */ - port_to_dev(port)->stats.tx_errors++; - port_to_dev(port)->stats.tx_fifo_errors++; - } - - if (stat & ST1_CDCD) + if (sca_in(msci + ST1, card) & ST1_CDCD) { + /* Reset MSCI CDCD status bit */ + sca_out(ST1_CDCD, msci + ST1, card); sca_set_carrier(port); + } } @@ -351,11 +344,17 @@ static inline void sca_tx_done(port_t *port) while (1) { pkt_desc __iomem *desc = desc_address(port, port->txlast, 1); + u8 stat = readb(&desc->stat); - if (!(readb(&desc->stat) & ST_TX_OWNRSHP)) + if (!(stat & ST_TX_OWNRSHP)) break; /* not yet transmitted */ - dev->stats.tx_packets++; - dev->stats.tx_bytes += readw(&desc->len); + if (stat & ST_TX_UNDRRUN) { + dev->stats.tx_errors++; + dev->stats.tx_fifo_errors++; + } else { + dev->stats.tx_packets++; + dev->stats.tx_bytes += readw(&desc->len); + } writeb(0, &desc->stat); /* Free descriptor */ port->txlast = next_desc(port, port->txlast, 1); } @@ -503,12 +502,11 @@ static void sca_open(struct net_device *dev) sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/ /* We're using the following interrupts: - - TXINT (DMAC completed all transmissions, underrun or DCD change) + - TXINT (DMAC completed all transmissions and DCD changes) - all DMA interrupts */ /* MSCI TXINT and RXINTA interrupt enable */ - sca_outl(IE0_TXINT | IE0_RXINTA | IE0_UDRN | IE0_CDCD, msci + IE0, - card); + sca_outl(IE0_TXINT | IE0_RXINTA | IE0_CDCD, msci + IE0, card); sca_out(port->tmc, msci + TMCR, card); sca_out(port->tmc, msci + TMCT, card); |