YhLu <[EMAIL PROTECTED]> writes:
> Eric,
>
> I have tested s2880 with all addon cards, and found interesting problem.
>
> When I plug Adaptec 29320 PCI X scsi card into slot 3 and 4. That share
> BUS_A of 8131 with LSI SCSI. Linux bios got IO port allocation problem on
> bus 1.
>
> BUS 1: 1000-2fff
> LSI will use 3000 later...
I believe this is a bug that failed to get pushed forward
from freebios tree. I have just committed this fix and
a patch is attached.
The problem is because it was performing it's size calculations
at address 0. It figured the I/O space registers could be safely
packed more tightly then they actually can be.
Eric
bash-2.05a$ cvs diff -u src/devices/device.c
[EMAIL PROTECTED]'s password:
Index: src/devices/device.c
===================================================================
RCS file: /cvsroot/freebios/freebios2/src/devices/device.c,v
retrieving revision 1.4
diff -u -r1.4 device.c
--- src/devices/device.c 21 Jul 2003 20:13:42 -0000 1.4
+++ src/devices/device.c 4 Aug 2003 19:52:30 -0000
@@ -217,8 +217,12 @@
if (resource->flags & IORESOURCE_IO) {
/* Don't allow potential aliases over the
* legacy pci expansion card addresses.
+ * The legacy pci decodes only 10 bits,
+ * uses 100h - 3ffh. Therefor, only 0 - ff
+ * can be used out of each 400h block of io
+ * space.
*/
- if ((base > 0x3ff) && ((base & 0x300) != 0)) {
+ if ((base & 0x300) != 0) {
base = (base & ~0x3ff) + 0x400;
}
/* Don't allow allocations in the VGA IO range.
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