diff options
Diffstat (limited to 'drivers/edac/sb_edac.c')
| -rw-r--r-- | drivers/edac/sb_edac.c | 103 |
1 files changed, 18 insertions, 85 deletions
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index b9564f767269..30eb91011ac9 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -1060,79 +1060,6 @@ static int haswell_chan_hash(int idx, u64 addr) return idx; } -/**************************************************************************** - Memory check routines - ****************************************************************************/ -static struct pci_dev *get_pdev_same_bus(u8 bus, u32 id) -{ - struct pci_dev *pdev = NULL; - - do { - pdev = pci_get_device(PCI_VENDOR_ID_INTEL, id, pdev); - if (pdev && pdev->bus->number == bus) - break; - } while (pdev); - - return pdev; -} - -/** - * check_if_ecc_is_active() - Checks if ECC is active - * @bus: Device bus - * @type: Memory controller type - * returns: 0 in case ECC is active, -ENODEV if it can't be determined or - * disabled - */ -static int check_if_ecc_is_active(const u8 bus, enum type type) -{ - struct pci_dev *pdev = NULL; - u32 mcmtr, id; - - switch (type) { - case IVY_BRIDGE: - id = PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA; - break; - case HASWELL: - id = PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA; - break; - case SANDY_BRIDGE: - id = PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA; - break; - case BROADWELL: - id = PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA; - break; - case KNIGHTS_LANDING: - /* - * KNL doesn't group things by bus the same way - * SB/IB/Haswell does. - */ - id = PCI_DEVICE_ID_INTEL_KNL_IMC_TA; - break; - default: - return -ENODEV; - } - - if (type != KNIGHTS_LANDING) - pdev = get_pdev_same_bus(bus, id); - else - pdev = pci_get_device(PCI_VENDOR_ID_INTEL, id, 0); - - if (!pdev) { - sbridge_printk(KERN_ERR, "Couldn't find PCI device " - "%04x:%04x! on bus %02d\n", - PCI_VENDOR_ID_INTEL, id, bus); - return -ENODEV; - } - - pci_read_config_dword(pdev, - type == KNIGHTS_LANDING ? KNL_MCMTR : MCMTR, &mcmtr); - if (!IS_ECC_ENABLED(mcmtr)) { - sbridge_printk(KERN_ERR, "ECC is disabled. Aborting\n"); - return -ENODEV; - } - return 0; -} - /* Low bits of TAD limit, and some metadata. */ static const u32 knl_tad_dram_limit_lo[] = { 0x400, 0x500, 0x600, 0x700, @@ -1620,9 +1547,9 @@ static void get_source_id(struct mem_ctl_info *mci) pvt->sbridge_dev->source_id = SOURCE_ID(reg); } -static void __populate_dimms(struct mem_ctl_info *mci, - u64 knl_mc_sizes[KNL_MAX_CHANNELS], - enum edac_type mode) +static int __populate_dimms(struct mem_ctl_info *mci, + u64 knl_mc_sizes[KNL_MAX_CHANNELS], + enum edac_type mode) { struct sbridge_pvt *pvt = mci->pvt_info; int channels = pvt->info.type == KNIGHTS_LANDING ? KNL_MAX_CHANNELS @@ -1671,6 +1598,12 @@ static void __populate_dimms(struct mem_ctl_info *mci, } edac_dbg(4, "Channel #%d MTR%d = %x\n", i, j, mtr); if (IS_DIMM_PRESENT(mtr)) { + if (!IS_ECC_ENABLED(pvt->info.mcmtr)) { + sbridge_printk(KERN_ERR, "CPU SrcID #%d, Ha #%d, Channel #%d has DIMMs, but ECC is disabled\n", + pvt->sbridge_dev->source_id, + pvt->sbridge_dev->dom, i); + return -ENODEV; + } pvt->channel[i].dimms++; ranks = numrank(pvt->info.type, mtr); @@ -1704,6 +1637,8 @@ static void __populate_dimms(struct mem_ctl_info *mci, } } } + + return 0; } static int get_dimm_config(struct mem_ctl_info *mci) @@ -1732,6 +1667,7 @@ static int get_dimm_config(struct mem_ctl_info *mci) if (knl_get_dimm_capacity(pvt, knl_mc_sizes) != 0) return -1; + pci_read_config_dword(pvt->pci_ta, KNL_MCMTR, &pvt->info.mcmtr); } else { pci_read_config_dword(pvt->pci_ras, RASENABLES, ®); if (IS_MIRROR_ENABLED(reg)) { @@ -1761,9 +1697,7 @@ static int get_dimm_config(struct mem_ctl_info *mci) } } - __populate_dimms(mci, knl_mc_sizes, mode); - - return 0; + return __populate_dimms(mci, knl_mc_sizes, mode); } static void get_memory_layout(const struct mem_ctl_info *mci) @@ -3180,11 +3114,6 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type) struct pci_dev *pdev = sbridge_dev->pdev[0]; int rc; - /* Check the number of active and not disabled channels */ - rc = check_if_ecc_is_active(sbridge_dev->bus, type); - if (unlikely(rc < 0)) - return rc; - /* allocate a new MC control structure */ layers[0].type = EDAC_MC_LAYER_CHANNEL; layers[0].size = type == KNIGHTS_LANDING ? @@ -3347,7 +3276,11 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type) } /* Get dimm basic config and the memory layout */ - get_dimm_config(mci); + rc = get_dimm_config(mci); + if (rc < 0) { + edac_dbg(0, "MC: failed to get_dimm_config()\n"); + goto fail; + } get_memory_layout(mci); /* record ptr to the generic device */ |