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EDAC, sb_edac: Add support for systems with segmented PCI buses 

Extend the driver to check whether segment number and bus number matches
when deciding how to group memory controller PCI devices to CPU sockets.

Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20180724190213.26359-1-msys.mizuma@gmail.com
[ Cleanup commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Masayoshi Mizuma 2018-07-24 15:02:13 -04:00 committed by Borislav Petkov
parent 6663484b4e
commit 190bd6e98a
1 changed files with 12 additions and 5 deletions
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17
drivers/edac/sb_edac.c
View File

@ -352,6 +352,7 @@ struct pci_id_table {
struct sbridge_dev {
struct list_head list;
int seg;
u8 bus, mc;
u8 node_id, source_id;
struct pci_dev **pdev;
@ -729,7 +730,8 @@ static inline int numcol(u32 mtr)
return 1 << cols;
}
static struct sbridge_dev *get_sbridge_dev(u8 bus, enum domain dom, int multi_bus,
static struct sbridge_dev *get_sbridge_dev(int seg, u8 bus, enum domain dom,
int multi_bus,
struct sbridge_dev *prev)
{
struct sbridge_dev *sbridge_dev;
@ -747,14 +749,15 @@ static struct sbridge_dev *get_sbridge_dev(u8 bus, enum domain dom, int multi_bu
: sbridge_edac_list.next, struct sbridge_dev, list);
list_for_each_entry_from(sbridge_dev, &sbridge_edac_list, list) {
if (sbridge_dev->bus == bus && (dom == SOCK || dom == sbridge_dev->dom))
if ((sbridge_dev->seg == seg) && (sbridge_dev->bus == bus) &&
(dom == SOCK || dom == sbridge_dev->dom))
return sbridge_dev;
}
return NULL;
}
static struct sbridge_dev *alloc_sbridge_dev(u8 bus, enum domain dom,
static struct sbridge_dev *alloc_sbridge_dev(int seg, u8 bus, enum domain dom,
const struct pci_id_table *table)
{
struct sbridge_dev *sbridge_dev;
@ -771,6 +774,7 @@ static struct sbridge_dev *alloc_sbridge_dev(u8 bus, enum domain dom,
return NULL;
}
sbridge_dev->seg = seg;
sbridge_dev->bus = bus;
sbridge_dev->dom = dom;
sbridge_dev->n_devs = table->n_devs_per_imc;
@ -2246,6 +2250,7 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
struct sbridge_dev *sbridge_dev = NULL;
const struct pci_id_descr *dev_descr = &table->descr[devno];
struct pci_dev *pdev = NULL;
int seg = 0;
u8 bus = 0;
int i = 0;
@ -2276,10 +2281,12 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
/* End of list, leave */
return -ENODEV;
}
seg = pci_domain_nr(pdev->bus);
bus = pdev->bus->number;
next_imc:
sbridge_dev = get_sbridge_dev(bus, dev_descr->dom, multi_bus, sbridge_dev);
sbridge_dev = get_sbridge_dev(seg, bus, dev_descr->dom,
multi_bus, sbridge_dev);
if (!sbridge_dev) {
/* If the HA1 wasn't found, don't create EDAC second memory controller */
if (dev_descr->dom == IMC1 && devno != 1) {
@ -2292,7 +2299,7 @@ next_imc:
if (dev_descr->dom == SOCK)
goto out_imc;
sbridge_dev = alloc_sbridge_dev(bus, dev_descr->dom, table);
sbridge_dev = alloc_sbridge_dev(seg, bus, dev_descr->dom, table);
if (!sbridge_dev) {
pci_dev_put(pdev);
return -ENOMEM;