From: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
This patch fixes the numa_node information in sysfs for PCI root
on AMD family15h platforms (currently showing -1) by adding
the hostbridge in the list of probed devices to be used for initializing
pci_root_info structue.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Signed-off-by: Myron Stowe <myron.st...@redhat.com>
Tested-by: Aravind Gopalakrishnan <aravind.gopalakrish...@amd.com>
Cc: Borislav Petkov <b...@suse.de>
Cc: Robert Richter <r...@kernel.org>
Cc: Daniel J Blueman <dan...@numascale.com>
Cc: Andreas Herrmann <herrmann.der.u...@googlemail.com>
---
arch/x86/pci/amd_bus.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index e88f4c5..330dbfe 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -24,10 +24,11 @@ struct pci_hostbridge_probe {
};
static struct pci_hostbridge_probe pci_probes[] __initdata = {
- { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1100 },
- { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1200 },
- { 0xff, 0, PCI_VENDOR_ID_AMD, 0x1200 },
- { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1300 },
+ { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1100 }, /* K8 */
+ { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1200 }, /* Fam10h */
+ { 0xff, 0, PCI_VENDOR_ID_AMD, 0x1200 }, /* Fam10h */
+ { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1300 }, /* Fam11h */
+ { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1600 }, /* Fam15h */
};
#define RANGE_NUM 16
@@ -113,6 +114,13 @@ static int __init early_fill_mp_bus_info(void)
info = alloc_pci_root_info(min_bus, max_bus, node, link);
}
+ /*
+ * The following code is only supported until Fam11h.
+ * Newer processors will depend on ACPI MCFG table instead.
+ */
+ if (boot_cpu_data.x86 > 0x11)
+ return 0;
+
/* get the default node and link for left over res */
reg = read_pci_config(bus, slot, 0, 0x60);
def_node = (reg >> 8) & 0x07;
--
1.9.0
--
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