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x86, gart: fix gart detection for Fam11h CPUs 

Impact: fix AMD Family 11h boot hangs / USB device problems

The AMD Fam11h CPUs have a K8 northbridge. This northbridge is different
from other family's because it lacks GART support (as I just learned).

But the kernel implicitly expects a GART if it finds an AMD northbridge.

Fix this by removing the Fam11h northbridge id from the scan list of K8
northbridges. This patch also changes the message in the GART driver
about missing K8 northbridges to tell that the GART is missing which is
the correct information in this case.

Reported-by: Jouni Malinen <jkmalinen@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joerg Roedel 2008-10-28 16:13:54 +01:00 committed by Ingo Molnar
parent 11a6b0c933
commit 87c6f40128
2 changed files with 1 additions and 2 deletions
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1
arch/x86/kernel/k8.c
View File

@ -18,7 +18,6 @@ static u32 *flush_words;
struct pci_device_id k8_nb_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_11H_NB_MISC) },
{}
};
EXPORT_SYMBOL(k8_nb_ids);

2
arch/x86/kernel/pci-gart_64.c
View File

@ -744,7 +744,7 @@ void __init gart_iommu_init(void)
long i;
if (cache_k8_northbridges() < 0 || num_k8_northbridges == 0) {
printk(KERN_INFO "PCI-GART: No AMD northbridge found.\n");
printk(KERN_INFO "PCI-GART: No AMD GART found.\n");
return;
}