mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2025-01-14 14:55:41 +00:00
Code Issues Releases Activity

MFamd64: 1.109 of pci_cfgreg.c which changes pci_cfgdisable() into a nop

Browse Source 
for type #1 similar to what other OS's do.

MFC after:	3 days
This commit is contained in:
John Baldwin 2007-11-28 22:22:05 +00:00
parent 85d18774de
commit 3f7f26e990
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=174052
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/i386/pci/pci_cfgreg.c
View File

@ -280,11 +280,15 @@ pci_cfgdisable(void)
{
switch (cfgmech) {
case CFGMECH_1:
outl(CONF1_ADDR_PORT, 0);
/*
* Do nothing for the config mechanism 1 case.
* Writing a 0 to the address port can apparently
* confuse some bridges and cause spurious
* access failures.
*/
break;
case CFGMECH_2:
outb(CONF2_ENABLE_PORT, 0);
outb(CONF2_FORWARD_PORT, 0);
break;
}
}