Author: yongari
Date: Fri Jun 7 01:21:09 2013
New Revision: 251482
URL: http://svnweb.freebsd.org/changeset/base/251482
Log:
Correct setting TX random backoff register. This register is
implemented as a 10 bits linear feedback shift register so only
lower 10 bits are valid.
Because this register is used to initialize random backoff interval
register only when resolved duplex is half-duplex, it wouldn't have
caused issues in these days.
Submitted by: Masanobu SAITOH <msai...@netbsd.org>
Modified:
head/sys/dev/bge/if_bge.c
head/sys/dev/bge/if_bgereg.h
Modified: head/sys/dev/bge/if_bge.c
==============================================================================
--- head/sys/dev/bge/if_bge.c Fri Jun 7 01:01:39 2013 (r251481)
+++ head/sys/dev/bge/if_bge.c Fri Jun 7 01:21:09 2013 (r251482)
@@ -2280,9 +2280,9 @@ bge_blockinit(struct bge_softc *sc)
/* Set random backoff seed for TX */
CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
- IF_LLADDR(sc->bge_ifp)[0] + IF_LLADDR(sc->bge_ifp)[1] +
+ (IF_LLADDR(sc->bge_ifp)[0] + IF_LLADDR(sc->bge_ifp)[1] +
IF_LLADDR(sc->bge_ifp)[2] + IF_LLADDR(sc->bge_ifp)[3] +
- IF_LLADDR(sc->bge_ifp)[4] + IF_LLADDR(sc->bge_ifp)[5] +
+ IF_LLADDR(sc->bge_ifp)[4] + IF_LLADDR(sc->bge_ifp)[5]) &
BGE_TX_BACKOFF_SEED_MASK);
/* Set inter-packet gap */
Modified: head/sys/dev/bge/if_bgereg.h
==============================================================================
--- head/sys/dev/bge/if_bgereg.h Fri Jun 7 01:01:39 2013
(r251481)
+++ head/sys/dev/bge/if_bgereg.h Fri Jun 7 01:21:09 2013
(r251482)
@@ -797,7 +797,7 @@
#define BGE_LEDCTL_BLINKPERIOD_OVERRIDE 0x80000000
/* TX backoff seed register */
-#define BGE_TX_BACKOFF_SEED_MASK 0x3F
+#define BGE_TX_BACKOFF_SEED_MASK 0x3FF
/* Autopoll status register */
#define BGE_AUTOPOLLSTS_ERROR 0x00000001
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