diff options
| author | Troy Kisky <troy.kisky@boundarydevices.com> | 2014-03-05 18:05:39 -0700 |
|---|---|---|
| committer | Troy Kisky <troy.kisky@boundarydevices.com> | 2014-04-24 18:59:47 -0700 |
| commit | 72a7f2b0c7d99456513f19bcffe8fab656213fe8 (patch) | |
| tree | 42138b071ab045908cb231b871405a6d525c4f75 /drivers | |
| parent | 86c1e3efd5e4db9ebc32a282e85db32d9ec2c2e4 (diff) | |
fec_main: add debug info to fec_timeout
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 8daefbd5571a..90ba927556e2 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -693,8 +693,33 @@ static void fec_timeout(struct net_device *ndev) { struct fec_enet_private *fep = netdev_priv(ndev); + struct bufdesc *bdp, *bdp1; + unsigned short status; pr_err("%s: last=%x %x, mask %x\n", __func__, last_ievents, readl(fep->hwp + FEC_IEVENT), readl(fep->hwp + FEC_IMASK)); + bdp = fep->dirty_tx; + bdp = fec_enet_get_nextdesc(bdp, &fep->bd_tx); + status = bdp->cbd_sc; + if ((status & BD_ENET_TX_READY) == 0) { + if (bdp != fep->bd_tx.cur) { + if (napi_schedule_prep(&fep->napi)) { + /* Disable the RX/TX interrupt */ + writel(FEC_ENET_MII, fep->hwp + FEC_IMASK); + __napi_schedule(&fep->napi); + } + netif_wake_queue(fep->netdev); + pr_err("%s: tx int lost\n", __func__); + return; + } + } + /* Disable all interrupts */ + writel(0, fep->hwp + FEC_IMASK); + bdp1 = bdp; + do { + pr_err("%s: %p %p %x %lx\n", __func__, bdp, fep->bd_tx.cur, bdp->cbd_sc, bdp->cbd_bufaddr); + bdp = fec_enet_get_nextdesc(bdp, &fep->bd_tx); + } while (bdp != bdp1); + ndev->stats.tx_errors++; fep->delay_work.timeout = true; @@ -754,6 +779,7 @@ fec_enet_tx(struct net_device *ndev) } break; } + bdp->cbd_sc = (bdp == fep->bd_tx.last) ? BD_SC_WRAP : 0; if (fep->bufdesc_ex) index = (struct bufdesc_ex *)bdp - |