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Move call of pci_addcfg() before test of cfg->subordinatebus, since the

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device probe of a host to PCI bridge may modify that value, based on
its knowledge of device specific registers. This makes the Intel XXpress
work, as verified by: Terje Marthinussen <terjem@cc.uit.no>.
This commit is contained in:
Stefan Eßer 1997-06-02 19:59:01 +00:00
parent 637fe2f7f3
commit 1a26f4c024
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=26391
2 changed files with 26 additions and 4 deletions
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15
sys/dev/pci/pci.c
View file

@ -23,7 +23,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: pci.c,v 1.74 1997/05/27 19:24:36 fsmp Exp $
* $Id: pci.c,v 1.75 1997/05/28 10:01:03 se Exp $
*
*/
@ -426,11 +426,22 @@ pci_probebus(int bus)
if (cfg != NULL) {
if (cfg->mfdev)
pcifunchigh = 7;
/*
* XXX: Temporarily move pci_addcfg() up before
* the use of cfg->subordinatebus. This is
* necessary, since pci_addcfg() calls the
* device's probe(), which may read the bus#
* from some device dependent register of
* some host to PCI bridges. The probe will
* eventually be moved to pci_readcfg(), and
* pci_addcfg() will then be moved back down
* below the conditional statement ...
*/
pci_addcfg(cfg);
if (bushigh < cfg->subordinatebus)
bushigh = cfg->subordinatebus;
pci_addcfg(cfg);
cfg = NULL; /* we don't own this anymore ... */
}
}

15
sys/pci/pci.c
View file

@ -23,7 +23,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: pci.c,v 1.74 1997/05/27 19:24:36 fsmp Exp $
* $Id: pci.c,v 1.75 1997/05/28 10:01:03 se Exp $
*
*/
@ -426,11 +426,22 @@ pci_probebus(int bus)
if (cfg != NULL) {
if (cfg->mfdev)
pcifunchigh = 7;
/*
* XXX: Temporarily move pci_addcfg() up before
* the use of cfg->subordinatebus. This is
* necessary, since pci_addcfg() calls the
* device's probe(), which may read the bus#
* from some device dependent register of
* some host to PCI bridges. The probe will
* eventually be moved to pci_readcfg(), and
* pci_addcfg() will then be moved back down
* below the conditional statement ...
*/
pci_addcfg(cfg);
if (bushigh < cfg->subordinatebus)
bushigh = cfg->subordinatebus;
pci_addcfg(cfg);
cfg = NULL; /* we don't own this anymore ... */
}
}