diff options
| author | Jim Snow <jim.m.snow@intel.com> | 2015-12-03 10:48:53 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2015-12-05 18:57:41 +0100 |
| commit | c1979ba254810a710bfdc982e3d417a4a7369c31 (patch) | |
| tree | fa4b28d9c91936e95b6a129e9b9117850ebff2de /drivers/edac/sb_edac.c | |
| parent | c59f9c06bdbdaeff9da107d2fcec4f46e9b10825 (diff) | |
EDAC, sb_edac: Add support for duplicate device IDs
Add options to sbridge_get_all_devices() to allow for duplicate device
IDs and devices that are scattered across mulitple PCI buses.
Signed-off-by: Jim Snow <jim.m.snow@intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: lukasz.anaczkowski@intel.com
Link: http://lkml.kernel.org/r/1449136134-23706-4-git-send-email-hubert.chrzaniuk@intel.com
[ Rebase to 4.4-rc3. ]
Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac/sb_edac.c')
| -rw-r--r-- | drivers/edac/sb_edac.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index 2e50a3eeeac2..c8fbde2bd20a 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -637,10 +637,19 @@ static inline int numcol(u32 mtr) return 1 << cols; } -static struct sbridge_dev *get_sbridge_dev(u8 bus) +static struct sbridge_dev *get_sbridge_dev(u8 bus, int multi_bus) { struct sbridge_dev *sbridge_dev; + /* + * If we have devices scattered across several busses that pertain + * to the same memory controller, we'll lump them all together. + */ + if (multi_bus) { + return list_first_entry_or_null(&sbridge_edac_list, + struct sbridge_dev, list); + } + list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) { if (sbridge_dev->bus == bus) return sbridge_dev; @@ -1588,7 +1597,8 @@ static void sbridge_put_all_devices(void) static int sbridge_get_onedevice(struct pci_dev **prev, u8 *num_mc, const struct pci_id_table *table, - const unsigned devno) + const unsigned devno, + const int multi_bus) { struct sbridge_dev *sbridge_dev; const struct pci_id_descr *dev_descr = &table->descr[devno]; @@ -1624,7 +1634,7 @@ static int sbridge_get_onedevice(struct pci_dev **prev, } bus = pdev->bus->number; - sbridge_dev = get_sbridge_dev(bus); + sbridge_dev = get_sbridge_dev(bus, multi_bus); if (!sbridge_dev) { sbridge_dev = alloc_sbridge_dev(bus, table); if (!sbridge_dev) { @@ -1673,21 +1683,32 @@ static int sbridge_get_onedevice(struct pci_dev **prev, * @num_mc: pointer to the memory controllers count, to be incremented in case * of success. * @table: model specific table + * @allow_dups: allow for multiple devices to exist with the same device id + * (as implemented, this isn't expected to work correctly in the + * multi-socket case). + * @multi_bus: don't assume devices on different buses belong to different + * memory controllers. * * returns 0 in case of success or error code */ -static int sbridge_get_all_devices(u8 *num_mc, - const struct pci_id_table *table) +static int sbridge_get_all_devices_full(u8 *num_mc, + const struct pci_id_table *table, + int allow_dups, + int multi_bus) { int i, rc; struct pci_dev *pdev = NULL; while (table && table->descr) { for (i = 0; i < table->n_devs; i++) { - pdev = NULL; + if (!allow_dups || i == 0 || + table->descr[i].dev_id != + table->descr[i-1].dev_id) { + pdev = NULL; + } do { rc = sbridge_get_onedevice(&pdev, num_mc, - table, i); + table, i, multi_bus); if (rc < 0) { if (i == 0) { i = table->n_devs; @@ -1696,7 +1717,7 @@ static int sbridge_get_all_devices(u8 *num_mc, sbridge_put_all_devices(); return -ENODEV; } - } while (pdev); + } while (pdev && !allow_dups); } table++; } @@ -1704,6 +1725,9 @@ static int sbridge_get_all_devices(u8 *num_mc, return 0; } +#define sbridge_get_all_devices(num_mc, table) \ + sbridge_get_all_devices_full(num_mc, table, 0, 0) + static int sbridge_mci_bind_devs(struct mem_ctl_info *mci, struct sbridge_dev *sbridge_dev) { |