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

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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
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@ -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 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
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;