d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Work around microtime() enabling interrupts.

Browse Source
This commit is contained in:
Bruce Evans 1994-11-06 00:23:45 +00:00
parent 9228b950e4
commit 2f31d30b01
3 changed files with 30 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
sys/dev/sio/sio.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* from: @(#)com.c 7.5 (Berkeley) 5/16/91
* $Id: sio.c,v 1.58 1994/10/23 21:27:34 wollman Exp $
* $Id: sio.c,v 1.59 1994/11/01 23:09:29 bde Exp $
*/
#include "sio.h"
@ -1022,7 +1022,16 @@ void
siointrts(unit)
int unit;
{
/*
* XXX microtime() reenables CPU interrupts. We can't afford to
* be interrupted and don't want to slow down microtime(), so lock
* out interrupts in another way.
*/
outb(IO_ICU1 + 1, 0xff);
microtime(&intr_timestamp);
disable_intr();
outb(IO_ICU1 + 1, imen);
siointr(unit);
}

11
sys/i386/isa/sio.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* from: @(#)com.c 7.5 (Berkeley) 5/16/91
* $Id: sio.c,v 1.58 1994/10/23 21:27:34 wollman Exp $
* $Id: sio.c,v 1.59 1994/11/01 23:09:29 bde Exp $
*/
#include "sio.h"
@ -1022,7 +1022,16 @@ void
siointrts(unit)
int unit;
{
/*
* XXX microtime() reenables CPU interrupts. We can't afford to
* be interrupted and don't want to slow down microtime(), so lock
* out interrupts in another way.
*/
outb(IO_ICU1 + 1, 0xff);
microtime(&intr_timestamp);
disable_intr();
outb(IO_ICU1 + 1, imen);
siointr(unit);
}

11
sys/isa/sio.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* from: @(#)com.c 7.5 (Berkeley) 5/16/91
* $Id: sio.c,v 1.58 1994/10/23 21:27:34 wollman Exp $
* $Id: sio.c,v 1.59 1994/11/01 23:09:29 bde Exp $
*/
#include "sio.h"
@ -1022,7 +1022,16 @@ void
siointrts(unit)
int unit;
{
/*
* XXX microtime() reenables CPU interrupts. We can't afford to
* be interrupted and don't want to slow down microtime(), so lock
* out interrupts in another way.
*/
outb(IO_ICU1 + 1, 0xff);
microtime(&intr_timestamp);
disable_intr();
outb(IO_ICU1 + 1, imen);
siointr(unit);
}