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Enable duplex autodetection if UTP media are autodetected.

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Add a sysctl 'machdep.cs_recv_delay' to specify how long to wait after
receiving a packet in order to check for a subsequent (back-to-back)
packet.  The cs8900 has a very small receive buffer, so this helps avoid
overflows at the cost of some extra CPU overhead.

Submitted by:	Oleg Sharoiko <os@rsu.ru>, MIHIRA "Sanpei" Yoshiro <sanpei@sanpei.org>
This commit is contained in:
Mike Smith 1998-08-27 22:41:18 +00:00
parent c9d8fd0a7b
commit 8abff6b13b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=38592
2 changed files with 24 additions and 22 deletions
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23
sys/dev/cs/if_cs.c
View File

@ -27,7 +27,7 @@
*/
/*
* $Id: if_cs.c,v 1.2 1998/08/12 18:02:48 bde Exp $
* $Id: if_cs.c,v 1.3 1998/08/13 20:31:17 msmith Exp $
*
* Device driver for Crystal Semiconductor CS8920 based ethernet
* adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
@ -44,6 +44,7 @@
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <net/if.h>
@ -72,10 +73,6 @@
#define CS_DMA_BUFFER_SIZE 16384
#endif
#ifndef CS_WAIT_NEXT_PACKET
#define CS_WAIT_NEXT_PACKET 570
#endif
/*
* cs_softc: per line info and status
*/
@ -105,8 +102,11 @@ static struct cs_softc {
static u_long cs_unit = NCS;
static int cs_attach __P((struct cs_softc *, int, int));
static int cs_attach_isa __P((struct isa_device *));
static int cs_recv_delay = 570;
SYSCTL_INT(_machdep, OID_AUTO, cs_recv_delay, CTLFLAG_RW, &cs_recv_delay, 0, "");
static int cs_attach __P((struct cs_softc *, int, int));
static int cs_attach_isa __P((struct isa_device *));
static void cs_init __P((void *));
static int cs_ioctl __P((struct ifnet *, u_long, caddr_t));
static int cs_probe __P((struct isa_device *));
@ -799,7 +799,7 @@ cs_get_packet(struct cs_softc *sc)
ifp->if_ipackets++;
if (length==ETHER_MAX_LEN-ETHER_CRC_LEN)
DELAY( CS_WAIT_NEXT_PACKET );
DELAY( cs_recv_delay );
} else {
m_freem(m);
}
@ -1212,9 +1212,10 @@ cs_mediaset(struct cs_softc *sc, int media)
switch (IFM_SUBTYPE(media)) {
default:
case IFM_AUTO:
if (error=enable_tp(sc))
if (error=enable_bnc(sc))
error=enable_aui(sc);
if ((error=enable_tp(sc))==0)
error = cs_duplex_auto(sc);
else if (error=enable_bnc(sc))
error = enable_aui(sc);
break;
case IFM_10_T:
if (error=enable_tp(sc))

23
sys/i386/isa/if_cs.c
View File

@ -27,7 +27,7 @@
*/
/*
* $Id: if_cs.c,v 1.2 1998/08/12 18:02:48 bde Exp $
* $Id: if_cs.c,v 1.3 1998/08/13 20:31:17 msmith Exp $
*
* Device driver for Crystal Semiconductor CS8920 based ethernet
* adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
@ -44,6 +44,7 @@
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <net/if.h>
@ -72,10 +73,6 @@
#define CS_DMA_BUFFER_SIZE 16384
#endif
#ifndef CS_WAIT_NEXT_PACKET
#define CS_WAIT_NEXT_PACKET 570
#endif
/*
* cs_softc: per line info and status
*/
@ -105,8 +102,11 @@ static struct cs_softc {
static u_long cs_unit = NCS;
static int cs_attach __P((struct cs_softc *, int, int));
static int cs_attach_isa __P((struct isa_device *));
static int cs_recv_delay = 570;
SYSCTL_INT(_machdep, OID_AUTO, cs_recv_delay, CTLFLAG_RW, &cs_recv_delay, 0, "");
static int cs_attach __P((struct cs_softc *, int, int));
static int cs_attach_isa __P((struct isa_device *));
static void cs_init __P((void *));
static int cs_ioctl __P((struct ifnet *, u_long, caddr_t));
static int cs_probe __P((struct isa_device *));
@ -799,7 +799,7 @@ cs_get_packet(struct cs_softc *sc)
ifp->if_ipackets++;
if (length==ETHER_MAX_LEN-ETHER_CRC_LEN)
DELAY( CS_WAIT_NEXT_PACKET );
DELAY( cs_recv_delay );
} else {
m_freem(m);
}
@ -1212,9 +1212,10 @@ cs_mediaset(struct cs_softc *sc, int media)
switch (IFM_SUBTYPE(media)) {
default:
case IFM_AUTO:
if (error=enable_tp(sc))
if (error=enable_bnc(sc))
error=enable_aui(sc);
if ((error=enable_tp(sc))==0)
error = cs_duplex_auto(sc);
else if (error=enable_bnc(sc))
error = enable_aui(sc);
break;
case IFM_10_T:
if (error=enable_tp(sc))