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Further refine the probe order of devices to more closely match the previous

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behavior.  Specifically, probe Host-PCI bridges in the order they are
encountered in the tree.  For CPUs, just use an order of 100000 and assume
that no Host-PCI bridges will be more than 10000 levels deep in the
namespace.  This fixes an issue on some boxes where the HPET timer stopped
attaching.
This commit is contained in:
John Baldwin 2008-07-23 15:13:06 +00:00
parent 72b60ff82c
commit b661868711
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=180760
1 changed files with 4 additions and 9 deletions
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13
sys/dev/acpica/acpi.c
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@ -1531,8 +1531,7 @@ 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
* ACPI_DEV_BASE_ORDER. Host-PCI bridges
* ACPI_DEV_BASE_ORDER + 10. CPUs
* 100000. CPUs
*/
AcpiGetType(handle, &type);
if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
@ -1541,10 +1540,8 @@ acpi_probe_order(ACPI_HANDLE handle, int *order)
*order = 2;
else if (acpi_MatchHid(handle, "PNP0C0F"))
*order = 3;
else if (acpi_MatchHid(handle, "PNP0A03"))
*order = ACPI_DEV_BASE_ORDER;
else if (type == ACPI_TYPE_PROCESSOR)
*order = ACPI_DEV_BASE_ORDER + 10;
*order = 100000;
}
/*
@ -1594,10 +1591,8 @@ acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
* placeholder so that the probe/attach passes will run
* breadth-first. Orders less than ACPI_DEV_BASE_ORDER
* are reserved for special objects (i.e., system
* resources). Orders between ACPI_DEV_BASE_ORDER and 100
* are used for Host-PCI bridges (and effectively all
* their children) and CPUs. Larger values are used for
* all other devices.
* resources). CPU devices have a very high order to
* ensure they are probed after other devices.
*/
ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
order = level * 10 + 100;