diff options
| author | scottl <scottl@FreeBSD.org> | 2005-12-28 08:36:32 +0000 |
|---|---|---|
| committer | scottl <scottl@FreeBSD.org> | 2005-12-28 08:36:32 +0000 |
| commit | 7e6d523277e374d6fb430c5f16dc385f2d167f21 (patch) | |
| tree | 68fb1a7659b4001d58c1edf80a012a20d2b9fc93 /sys/dev/ti/if_ti.c | |
| parent | fd8dcc60632d830d528145f318c244167d40e963 (diff) | |
| download | FreeBSD-src-7e6d523277e374d6fb430c5f16dc385f2d167f21.zip FreeBSD-src-7e6d523277e374d6fb430c5f16dc385f2d167f21.tar.gz | |
Cache the tx producer index instead of reading it every time ti_start is
called.
Diffstat (limited to 'sys/dev/ti/if_ti.c')
| -rw-r--r-- | sys/dev/ti/if_ti.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/ti/if_ti.c b/sys/dev/ti/if_ti.c index 4a8c5fa..9fbe805 100644 --- a/sys/dev/ti/if_ti.c +++ b/sys/dev/ti/if_ti.c @@ -1727,6 +1727,7 @@ ti_init_tx_ring(sc) { sc->ti_txcnt = 0; sc->ti_tx_saved_considx = 0; + sc->ti_tx_saved_prodidx = 0; CSR_WRITE_4(sc, TI_MB_SENDPROD_IDX, 0); return (0); } @@ -3102,7 +3103,7 @@ ti_start_locked(ifp) sc = ifp->if_softc; - prodidx = CSR_READ_4(sc, TI_MB_SENDPROD_IDX); + prodidx = sc->ti_tx_saved_prodidx; while (sc->ti_cdata.ti_tx_chain[prodidx] == NULL) { IF_DEQUEUE(&ifp->if_snd, m_head); @@ -3146,6 +3147,7 @@ ti_start_locked(ifp) } /* Transmit */ + sc->ti_tx_saved_prodidx = prodidx; CSR_WRITE_4(sc, TI_MB_SENDPROD_IDX, prodidx); /* |
