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Add support for accessing ports. This was done to access parallel

Browse source 
ports, but should work for others as well.

Submitted by:  Parag Patel <parag@cgt.com>
This commit is contained in:
Warner Losh 1999-01-20 17:55:22 +00:00
parent 7b1777101c
commit 6d54a68468
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=42904
1 changed files with 19 additions and 4 deletions
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23
usr.bin/doscmd/port.c
View file

@ -29,7 +29,7 @@
*
* BSDI port.c,v 2.2 1996/04/08 19:33:03 bostic Exp
*
* $Id: port.c,v 1.2 1996/09/22 05:53:08 miff Exp $
* $Id: port.c,v 1.1 1997/08/09 01:42:54 dyson Exp $
*/
#include "doscmd.h"
@ -59,15 +59,30 @@ u_long ioports[MAXPORT/32];
static void
iomap(int port, int cnt)
{
fatal("iomap not supported");
if (port + cnt >= MAXPORT) {
errno = ERANGE;
goto bad;
}
if (i386_set_ioperm(port, cnt, 1) < 0) {
bad:
perror("iomap");
quit(1);
}
}
static void
iounmap(int port, int cnt)
{
fatal("iomap not supported");
if (port + cnt >= MAXPORT) {
errno = ERANGE;
goto bad;
}
if (i386_set_ioperm(port, cnt, 0) < 0) {
bad:
perror("iounmap");
quit(1);
}
}
#else
static void
iomap(int port, int cnt)