Fix locating sibling memory controller PCI functions by using the
correct PCI domain and use Northbridge only if found. Tested on
multi-socket server and multi-server, multi-socket NumaConnect setup.
v7: Refactor patches grouping changes
v8: Restructure searching for PCI function for clarity; use Northbridge
only if found
Signed-off-by: Daniel J Blueman <dan...@numascale-asia.com>
---
drivers/edac/amd64_edac.c | 43 ++++++++++++++++++++++++-------------------
1 file changed, 24 insertions(+), 19 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 60e93fa..6c1005f 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -983,6 +983,22 @@ static u64 get_error_address(struct mce *m)
return addr;
}
+static struct pci_dev *pci_get_related_function(unsigned int vendor,
+ unsigned int device,
+ struct pci_dev *related)
+{
+ struct pci_dev *dev = NULL;
+
+ while ((dev = pci_get_device(vendor, device, dev))) {
+ if (pci_domain_nr(dev->bus) == pci_domain_nr(related->bus) &&
+ (dev->bus->number == related->bus->number) &&
+ (PCI_SLOT(dev->devfn) == PCI_SLOT(related->devfn)))
+ break;
+ }
+
+ return dev;
+}
+
static void read_dram_base_limit_regs(struct amd64_pvt *pvt, unsigned range)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
@@ -1002,11 +1018,17 @@ static void read_dram_base_limit_regs(struct amd64_pvt
*pvt, unsigned range)
/* Factor in CC6 save area by reading dst node's limit reg */
if (c->x86 == 0x15) {
- struct pci_dev *f1 = NULL;
+ struct pci_dev *misc, *f1 = NULL;
u8 nid = dram_dst_node(pvt, range);
+ struct amd_northbridge *nb = node_to_amd_nb(nid);
u32 llim;
- f1 = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0x18 + nid,
1));
+ /* If DRAM base/limit registers point to a non-AMD device, nb
won't have been found */
+ if (!nb)
+ return;
+
+ misc = nb->misc;
+ f1 = pci_get_related_function(misc->vendor,
PCI_DEVICE_ID_AMD_15H_NB_F1, misc);
if (WARN_ON(!f1))
return;
@@ -1713,23 +1735,6 @@ static struct amd64_family_type amd64_family_types[] = {
},
};
-static struct pci_dev *pci_get_related_function(unsigned int vendor,
- unsigned int device,
- struct pci_dev *related)
-{
- struct pci_dev *dev = NULL;
-
- dev = pci_get_device(vendor, device, dev);
- while (dev) {
- if ((dev->bus->number == related->bus->number) &&
- (PCI_SLOT(dev->devfn) == PCI_SLOT(related->devfn)))
- break;
- dev = pci_get_device(vendor, device, dev);
- }
-
- return dev;
-}
-
/*
* These are tables of eigenvectors (one per line) which can be used for the
* construction of the syndrome tables. The modified syndrome search algorithm
--
1.7.10.4
--
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