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Probe PCI link devices early so that we turn them all off via _DIS before

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we start turning any of them back on again.  This works around a bug in
some BIOSen that alias two different link devices for APIC vs ATPIC modes
onto the same physical hardware link.

Submitted by:	njl
Tested by:	Antoine Brodin antoine dot brodin at laposte dot net
This commit is contained in:
John Baldwin 2005-04-14 06:45:24 +00:00
parent f781b7b493
commit b460c6f86b
1 changed files with 4 additions and 0 deletions
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4
sys/dev/acpica/acpi.c
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@ -1495,6 +1495,7 @@ acpi_probe_order(ACPI_HANDLE handle, int *order)
/*
* 1. I/O port and memory system resource holders
* 2. Embedded controllers (to handle early accesses)
* 3. PCI Link Devices
*/
ret = 0;
if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02")) {
@ -1503,6 +1504,9 @@ acpi_probe_order(ACPI_HANDLE handle, int *order)
} else if (acpi_MatchHid(handle, "PNP0C09")) {
*order = 2;
ret = 1;
} else if (acpi_MatchHid(handle, "PNP0C0F")) {
*order = 3;
ret = 1;
}
return (ret);