diff options
Diffstat (limited to 'drivers/edac/igen6_edac.c')
| -rw-r--r-- | drivers/edac/igen6_edac.c | 86 |
1 files changed, 70 insertions, 16 deletions
diff --git a/drivers/edac/igen6_edac.c b/drivers/edac/igen6_edac.c index 5807517ee32d..1930dc00c791 100644 --- a/drivers/edac/igen6_edac.c +++ b/drivers/edac/igen6_edac.c @@ -127,6 +127,7 @@ static const struct res_config { bool machine_check; + /* The number of present memory controllers. */ int num_imc; u32 imc_base; u32 cmf_base; @@ -240,6 +241,12 @@ static struct work_struct ecclog_work; #define DID_ADL_N_SKU11 0x467c #define DID_ADL_N_SKU12 0x4632 +/* Compute die IDs for Arizona Beach with IBECC */ +#define DID_AZB_SKU1 0x4676 + +/* Compute did IDs for Amston Lake with IBECC */ +#define DID_ASL_SKU1 0x464a + /* Compute die IDs for Raptor Lake-P with IBECC */ #define DID_RPL_P_SKU1 0xa706 #define DID_RPL_P_SKU2 0xa707 @@ -595,6 +602,8 @@ static const struct pci_device_id igen6_pci_tbl[] = { { PCI_VDEVICE(INTEL, DID_ADL_N_SKU10), (kernel_ulong_t)&adl_n_cfg }, { PCI_VDEVICE(INTEL, DID_ADL_N_SKU11), (kernel_ulong_t)&adl_n_cfg }, { PCI_VDEVICE(INTEL, DID_ADL_N_SKU12), (kernel_ulong_t)&adl_n_cfg }, + { PCI_VDEVICE(INTEL, DID_AZB_SKU1), (kernel_ulong_t)&adl_n_cfg }, + { PCI_VDEVICE(INTEL, DID_ASL_SKU1), (kernel_ulong_t)&adl_n_cfg }, { PCI_VDEVICE(INTEL, DID_RPL_P_SKU1), (kernel_ulong_t)&rpl_p_cfg }, { PCI_VDEVICE(INTEL, DID_RPL_P_SKU2), (kernel_ulong_t)&rpl_p_cfg }, { PCI_VDEVICE(INTEL, DID_RPL_P_SKU3), (kernel_ulong_t)&rpl_p_cfg }, @@ -1201,23 +1210,21 @@ static void igen6_check(struct mem_ctl_info *mci) irq_work_queue(&ecclog_irq_work); } -static int igen6_register_mci(int mc, u64 mchbar, struct pci_dev *pdev) +/* Check whether the memory controller is absent. */ +static bool igen6_imc_absent(void __iomem *window) +{ + return readl(window + MAD_INTER_CHANNEL_OFFSET) == ~0; +} + +static int igen6_register_mci(int mc, void __iomem *window, struct pci_dev *pdev) { struct edac_mc_layer layers[2]; struct mem_ctl_info *mci; struct igen6_imc *imc; - void __iomem *window; int rc; edac_dbg(2, "\n"); - mchbar += mc * MCHBAR_SIZE; - window = ioremap(mchbar, MCHBAR_SIZE); - if (!window) { - igen6_printk(KERN_ERR, "Failed to ioremap 0x%llx\n", mchbar); - return -ENODEV; - } - layers[0].type = EDAC_MC_LAYER_CHANNEL; layers[0].size = NUM_CHANNELS; layers[0].is_virt_csrow = false; @@ -1283,7 +1290,6 @@ fail3: fail2: edac_mc_free(mci); fail: - iounmap(window); return rc; } @@ -1309,6 +1315,56 @@ static void igen6_unregister_mcis(void) } } +static int igen6_register_mcis(struct pci_dev *pdev, u64 mchbar) +{ + void __iomem *window; + int lmc, pmc, rc; + u64 base; + + for (lmc = 0, pmc = 0; pmc < NUM_IMC; pmc++) { + base = mchbar + pmc * MCHBAR_SIZE; + window = ioremap(base, MCHBAR_SIZE); + if (!window) { + igen6_printk(KERN_ERR, "Failed to ioremap 0x%llx for mc%d\n", base, pmc); + rc = -ENOMEM; + goto out_unregister_mcis; + } + + if (igen6_imc_absent(window)) { + iounmap(window); + edac_dbg(2, "Skip absent mc%d\n", pmc); + continue; + } + + rc = igen6_register_mci(lmc, window, pdev); + if (rc) + goto out_iounmap; + + /* Done, if all present MCs are detected and registered. */ + if (++lmc >= res_cfg->num_imc) + break; + } + + if (!lmc) { + igen6_printk(KERN_ERR, "No mc found.\n"); + return -ENODEV; + } + + if (lmc < res_cfg->num_imc) + igen6_printk(KERN_WARNING, "Expected %d mcs, but only %d detected.", + res_cfg->num_imc, lmc); + + return 0; + +out_iounmap: + iounmap(window); + +out_unregister_mcis: + igen6_unregister_mcis(); + + return rc; +} + static int igen6_mem_slice_setup(u64 mchbar) { struct igen6_imc *imc = &igen6_pvt->imc[0]; @@ -1405,7 +1461,7 @@ static void opstate_set(const struct res_config *cfg, const struct pci_device_id static int igen6_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { u64 mchbar; - int i, rc; + int rc; edac_dbg(2, "\n"); @@ -1421,11 +1477,9 @@ static int igen6_probe(struct pci_dev *pdev, const struct pci_device_id *ent) opstate_set(res_cfg, ent); - for (i = 0; i < res_cfg->num_imc; i++) { - rc = igen6_register_mci(i, mchbar, pdev); - if (rc) - goto fail2; - } + rc = igen6_register_mcis(pdev, mchbar); + if (rc) + goto fail; if (res_cfg->num_imc > 1) { rc = igen6_mem_slice_setup(mchbar); |