diff options
| author | Brad Smith <brad@cvs.openbsd.org> | 2006-01-16 01:47:40 +0000 |
|---|---|---|
| committer | Brad Smith <brad@cvs.openbsd.org> | 2006-01-16 01:47:40 +0000 |
| commit | b06d3f536887af2ffd3275bc3989d188568d9d80 (patch) | |
| tree | 2d159f748eff00406ace3aab8b258b926e12a502 /sys | |
| parent | 1178f8d0b737507e2d2a5bf71f042ab5d0710d5a (diff) | |
Cache the TX producer index instead of reading it every time ti_start is
called.
From FreeBSD
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/pci/if_ti.c | 8 | ||||
| -rw-r--r-- | sys/dev/pci/if_tireg.h | 3 |
2 files changed, 7 insertions, 4 deletions
diff --git a/sys/dev/pci/if_ti.c b/sys/dev/pci/if_ti.c index e4531cf2daa..815eb3221e1 100644 --- a/sys/dev/pci/if_ti.c +++ b/sys/dev/pci/if_ti.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_ti.c,v 1.73 2005/10/10 20:54:23 brad Exp $ */ +/* $OpenBSD: if_ti.c,v 1.74 2006/01/16 01:47:39 brad Exp $ */ /* * Copyright (c) 1997, 1998, 1999 @@ -1052,6 +1052,7 @@ ti_init_tx_ring(struct ti_softc *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); SLIST_INIT(&sc->ti_tx_map_listhead); @@ -2178,12 +2179,12 @@ ti_start(struct ifnet *ifp) { struct ti_softc *sc; struct mbuf *m_head = NULL; - u_int32_t prodidx = 0; + u_int32_t prodidx; int pkts = 0, error; 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) { IFQ_POLL(&ifp->if_snd, m_head); @@ -2222,6 +2223,7 @@ ti_start(struct ifnet *ifp) return; /* Transmit */ + sc->ti_tx_saved_prodidx = prodidx; CSR_WRITE_4(sc, TI_MB_SENDPROD_IDX, prodidx); /* diff --git a/sys/dev/pci/if_tireg.h b/sys/dev/pci/if_tireg.h index 12ccbc3c7be..e22182e2405 100644 --- a/sys/dev/pci/if_tireg.h +++ b/sys/dev/pci/if_tireg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: if_tireg.h,v 1.20 2005/10/09 20:07:32 brad Exp $ */ +/* $OpenBSD: if_tireg.h,v 1.21 2006/01/16 01:47:39 brad Exp $ */ /* * Copyright (c) 1997, 1998, 1999 @@ -1117,6 +1117,7 @@ struct ti_softc { #define ti_tx_considx ti_rdata->ti_tx_considx_r struct ti_tx_desc *ti_tx_ring_nic;/* pointer to shared mem */ bus_dmamap_t ti_ring_map; + u_int16_t ti_tx_saved_prodidx; u_int16_t ti_tx_saved_considx; u_int16_t ti_rx_saved_considx; u_int16_t ti_ev_saved_considx; |