From: Navin Boppuri <navin.boppuri@xxxxxxxxxxx>
arch/x86_64/kernel/aperture.c: The search for the AGP bridge has been
extended to search for all the 256 buses instead of the first 32. This
is required since on a some systems, the bridge may be located on a bus
much farther than the first 32. By searching all 256 buses, we guarantee
that the search succeeds on such systems.
arch/x86_64/kernel/pci-gart.c: The search for the Northbridge is not
limited to just bus 0 anymore. This is required because on certain
systems, we may not find one on bus 0.
Signed-off-by: Navin Boppuri <navin.boppuri@xxxxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxx>
---
---
arch/x86_64/kernel/aperture.c | 2 +-
arch/x86_64/kernel/pci-gart.c | 4 +---
2 files changed, 2 insertions(+), 4 deletions(-)
Index: linux/arch/x86_64/kernel/aperture.c
===================================================================
--- linux.orig/arch/x86_64/kernel/aperture.c
+++ linux/arch/x86_64/kernel/aperture.c
@@ -161,7 +161,7 @@ static __u32 __init search_agp_bridge(u3
int num, slot, func;
/* Poor man's PCI discovery */
- for (num = 0; num < 32; num++) {
+ for (num = 0; num < 256; num++) {
for (slot = 0; slot < 32; slot++) {
for (func = 0; func < 8; func++) {
u32 class, cap;
Index: linux/arch/x86_64/kernel/pci-gart.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-gart.c
+++ linux/arch/x86_64/kernel/pci-gart.c
@@ -65,9 +65,7 @@ static u32 gart_unmapped_entry;
#define for_all_nb(dev) \
dev = NULL; \
- while ((dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1103, dev))!=NULL)\
- if (dev->bus->number == 0 && \
- (PCI_SLOT(dev->devfn) >= 24) && (PCI_SLOT(dev->devfn) <= 31))
+ while ((dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1103, dev))!=NULL)
static struct pci_dev *northbridges[MAX_NB];
static u32 northbridge_flush_word[MAX_NB];
-
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