diff options
| -rw-r--r-- | drivers/edac/xgene_edac.c | 669 |
1 files changed, 474 insertions, 195 deletions
diff --git a/drivers/edac/xgene_edac.c b/drivers/edac/xgene_edac.c index 5ff42d5..aee03c2 100644 --- a/drivers/edac/xgene_edac.c +++ b/drivers/edac/xgene_edac.c @@ -63,10 +63,11 @@ struct xgene_edac { struct regmap *efuse_map; void __iomem *pcp_csr; spinlock_t lock; - struct dentry *dfs; + struct dentry *dfs; struct list_head mcus; struct list_head pmds; + struct list_head l3s; struct mutex mc_lock; int mc_active_mask; @@ -537,140 +538,134 @@ static void xgene_edac_pmd_l1_check(struct edac_device_ctl_info *edac_dev, pg_f = ctx->pmd_csr + cpu_idx * CPU_CSR_STRIDE + CPU_MEMERR_CPU_PAGE; val = readl(pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET); - if (val) { - dev_err(edac_dev->dev, - "CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n", - ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, - MEMERR_CPU_ICFESR_ERRWAY_RD(val), - MEMERR_CPU_ICFESR_ERRINDEX_RD(val), - MEMERR_CPU_ICFESR_ERRINFO_RD(val)); - if (val & MEMERR_CPU_ICFESR_CERR_MASK) - dev_err(edac_dev->dev, - "One or more correctable error\n"); - if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK) - dev_err(edac_dev->dev, "Multiple correctable error\n"); - switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) { - case 1: - dev_err(edac_dev->dev, "L1 TLB multiple hit\n"); - break; - case 2: - dev_err(edac_dev->dev, "Way select multiple hit\n"); - break; - case 3: - dev_err(edac_dev->dev, "Physical tag parity error\n"); - break; - case 4: - case 5: - dev_err(edac_dev->dev, "L1 data parity error\n"); - break; - case 6: - dev_err(edac_dev->dev, "L1 pre-decode parity error\n"); - break; - } + if (!val) + goto chk_lsu; + dev_err(edac_dev->dev, + "CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n", + ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, + MEMERR_CPU_ICFESR_ERRWAY_RD(val), + MEMERR_CPU_ICFESR_ERRINDEX_RD(val), + MEMERR_CPU_ICFESR_ERRINFO_RD(val)); + if (val & MEMERR_CPU_ICFESR_CERR_MASK) + dev_err(edac_dev->dev, "One or more correctable error\n"); + if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK) + dev_err(edac_dev->dev, "Multiple correctable error\n"); + switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) { + case 1: + dev_err(edac_dev->dev, "L1 TLB multiple hit\n"); + break; + case 2: + dev_err(edac_dev->dev, "Way select multiple hit\n"); + break; + case 3: + dev_err(edac_dev->dev, "Physical tag parity error\n"); + break; + case 4: + case 5: + dev_err(edac_dev->dev, "L1 data parity error\n"); + break; + case 6: + dev_err(edac_dev->dev, "L1 pre-decode parity error\n"); + break; + } - /* Clear any HW errors */ - writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET); + /* Clear any HW errors */ + writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET); - if (val & (MEMERR_CPU_ICFESR_CERR_MASK | - MEMERR_CPU_ICFESR_MULTCERR_MASK)) - edac_device_handle_ce(edac_dev, 0, 0, - edac_dev->ctl_name); - } + if (val & (MEMERR_CPU_ICFESR_CERR_MASK | + MEMERR_CPU_ICFESR_MULTCERR_MASK)) + edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); +chk_lsu: val = readl(pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET); - if (val) { + if (!val) + goto chk_mmu; + dev_err(edac_dev->dev, + "CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n", + ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, + MEMERR_CPU_LSUESR_ERRWAY_RD(val), + MEMERR_CPU_LSUESR_ERRINDEX_RD(val), + MEMERR_CPU_LSUESR_ERRINFO_RD(val)); + if (val & MEMERR_CPU_LSUESR_CERR_MASK) + dev_err(edac_dev->dev, "One or more correctable error\n"); + if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK) + dev_err(edac_dev->dev, "Multiple correctable error\n"); + switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) { + case 0: + dev_err(edac_dev->dev, "Load tag error\n"); + break; + case 1: + dev_err(edac_dev->dev, "Load data error\n"); + break; + case 2: + dev_err(edac_dev->dev, "WSL multihit error\n"); + break; + case 3: + dev_err(edac_dev->dev, "Store tag error\n"); + break; + case 4: dev_err(edac_dev->dev, - "CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n", - ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, - MEMERR_CPU_LSUESR_ERRWAY_RD(val), - MEMERR_CPU_LSUESR_ERRINDEX_RD(val), - MEMERR_CPU_LSUESR_ERRINFO_RD(val)); - if (val & MEMERR_CPU_LSUESR_CERR_MASK) - dev_err(edac_dev->dev, - "One or more correctable error\n"); - if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK) - dev_err(edac_dev->dev, "Multiple correctable error\n"); - switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) { - case 0: - dev_err(edac_dev->dev, "Load tag error\n"); - break; - case 1: - dev_err(edac_dev->dev, "Load data error\n"); - break; - case 2: - dev_err(edac_dev->dev, "WSL multihit error\n"); - break; - case 3: - dev_err(edac_dev->dev, "Store tag error\n"); - break; - case 4: - dev_err(edac_dev->dev, - "DTB multihit from load pipeline error\n"); - break; - case 5: - dev_err(edac_dev->dev, - "DTB multihit from store pipeline error\n"); - break; - } + "DTB multihit from load pipeline error\n"); + break; + case 5: + dev_err(edac_dev->dev, + "DTB multihit from store pipeline error\n"); + break; + } - /* Clear any HW errors */ - writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET); + /* Clear any HW errors */ + writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET); - if (val & (MEMERR_CPU_LSUESR_CERR_MASK | - MEMERR_CPU_LSUESR_MULTCERR_MASK)) - edac_device_handle_ce(edac_dev, 0, 0, - edac_dev->ctl_name); - } + if (val & (MEMERR_CPU_LSUESR_CERR_MASK | + MEMERR_CPU_LSUESR_MULTCERR_MASK)) + edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); +chk_mmu: val = readl(pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET); - if (val) { - dev_err(edac_dev->dev, - "CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n", - ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, - MEMERR_CPU_MMUESR_ERRWAY_RD(val), - MEMERR_CPU_MMUESR_ERRINDEX_RD(val), - MEMERR_CPU_MMUESR_ERRINFO_RD(val), - val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : - "ICF"); - if (val & MEMERR_CPU_MMUESR_CERR_MASK) - dev_err(edac_dev->dev, - "One or more correctable error\n"); - if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK) - dev_err(edac_dev->dev, "Multiple correctable error\n"); - switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) { - case 0: - dev_err(edac_dev->dev, "Stage 1 UTB hit error\n"); - break; - case 1: - dev_err(edac_dev->dev, "Stage 1 UTB miss error\n"); - break; - case 2: - dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n"); - break; - case 3: - dev_err(edac_dev->dev, - "TMO operation single bank error\n"); - break; - case 4: - dev_err(edac_dev->dev, "Stage 2 UTB error\n"); - break; - case 5: - dev_err(edac_dev->dev, "Stage 2 UTB miss error\n"); - break; - case 6: - dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n"); - break; - case 7: - dev_err(edac_dev->dev, - "TMO operation multiple bank error\n"); - break; - } + if (!val) + return; + dev_err(edac_dev->dev, + "CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n", + ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, + MEMERR_CPU_MMUESR_ERRWAY_RD(val), + MEMERR_CPU_MMUESR_ERRINDEX_RD(val), + MEMERR_CPU_MMUESR_ERRINFO_RD(val), + val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : "ICF"); + if (val & MEMERR_CPU_MMUESR_CERR_MASK) + dev_err(edac_dev->dev, "One or more correctable error\n"); + if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK) + dev_err(edac_dev->dev, "Multiple correctable error\n"); + switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) { + case 0: + dev_err(edac_dev->dev, "Stage 1 UTB hit error\n"); + break; + case 1: + dev_err(edac_dev->dev, "Stage 1 UTB miss error\n"); + break; + case 2: + dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n"); + break; + case 3: + dev_err(edac_dev->dev, "TMO operation single bank error\n"); + break; + case 4: + dev_err(edac_dev->dev, "Stage 2 UTB error\n"); + break; + case 5: + dev_err(edac_dev->dev, "Stage 2 UTB miss error\n"); + break; + case 6: + dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n"); + break; + case 7: + dev_err(edac_dev->dev, "TMO operation multiple bank error\n"); + break; + } - /* Clear any HW errors */ - writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET); + /* Clear any HW errors */ + writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET); - edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); - } + edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); } static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev) @@ -685,60 +680,56 @@ static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev) /* Check L2 */ pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE; val = readl(pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET); - if (val) { - val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET); - val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET); - dev_err(edac_dev->dev, - "PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n", - ctx->pmd, val, val_hi, val_lo); - dev_err(edac_dev->dev, - "ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n", - MEMERR_L2C_L2ESR_ERRSYN_RD(val), - MEMERR_L2C_L2ESR_ERRWAY_RD(val), - MEMERR_L2C_L2ESR_ERRCPU_RD(val), - MEMERR_L2C_L2ESR_ERRGROUP_RD(val), - MEMERR_L2C_L2ESR_ERRACTION_RD(val)); - - if (val & MEMERR_L2C_L2ESR_ERR_MASK) - dev_err(edac_dev->dev, - "One or more correctable error\n"); - if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK) - dev_err(edac_dev->dev, "Multiple correctable error\n"); - if (val & MEMERR_L2C_L2ESR_UCERR_MASK) - dev_err(edac_dev->dev, - "One or more uncorrectable error\n"); - if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK) - dev_err(edac_dev->dev, - "Multiple uncorrectable error\n"); - - switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) { - case 0: - dev_err(edac_dev->dev, "Outbound SDB parity error\n"); - break; - case 1: - dev_err(edac_dev->dev, "Inbound SDB parity error\n"); - break; - case 2: - dev_err(edac_dev->dev, "Tag ECC error\n"); - break; - case 3: - dev_err(edac_dev->dev, "Data ECC error\n"); - break; - } - - /* Clear any HW errors */ - writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET); - - if (val & (MEMERR_L2C_L2ESR_ERR_MASK | - MEMERR_L2C_L2ESR_MULTICERR_MASK)) - edac_device_handle_ce(edac_dev, 0, 0, - edac_dev->ctl_name); - if (val & (MEMERR_L2C_L2ESR_UCERR_MASK | - MEMERR_L2C_L2ESR_MULTUCERR_MASK)) - edac_device_handle_ue(edac_dev, 0, 0, - edac_dev->ctl_name); + if (!val) + goto chk_l2c; + val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET); + val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET); + dev_err(edac_dev->dev, + "PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n", + ctx->pmd, val, val_hi, val_lo); + dev_err(edac_dev->dev, + "ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n", + MEMERR_L2C_L2ESR_ERRSYN_RD(val), + MEMERR_L2C_L2ESR_ERRWAY_RD(val), + MEMERR_L2C_L2ESR_ERRCPU_RD(val), + MEMERR_L2C_L2ESR_ERRGROUP_RD(val), + MEMERR_L2C_L2ESR_ERRACTION_RD(val)); + + if (val & MEMERR_L2C_L2ESR_ERR_MASK) + dev_err(edac_dev->dev, "One or more correctable error\n"); + if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK) + dev_err(edac_dev->dev, "Multiple correctable error\n"); + if (val & MEMERR_L2C_L2ESR_UCERR_MASK) + dev_err(edac_dev->dev, "One or more uncorrectable error\n"); + if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK) + dev_err(edac_dev->dev, "Multiple uncorrectable error\n"); + + switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) { + case 0: + dev_err(edac_dev->dev, "Outbound SDB parity error\n"); + break; + case 1: + dev_err(edac_dev->dev, "Inbound SDB parity error\n"); + break; + case 2: + dev_err(edac_dev->dev, "Tag ECC error\n"); + break; + case 3: + dev_err(edac_dev->dev, "Data ECC error\n"); + break; } + /* Clear any HW errors */ + writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET); + + if (val & (MEMERR_L2C_L2ESR_ERR_MASK | + MEMERR_L2C_L2ESR_MULTICERR_MASK)) + edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); + if (val & (MEMERR_L2C_L2ESR_UCERR_MASK | + MEMERR_L2C_L2ESR_MULTUCERR_MASK)) + edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name); + +chk_l2c: /* Check if any memory request timed out on L2 cache */ pg_d = ctx->pmd_csr + CPU_L2C_PAGE; val = readl(pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET); @@ -878,25 +869,16 @@ static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = { { } }; -static void xgene_edac_pmd_create_debugfs_nodes( - struct edac_device_ctl_info *edac_dev) +static void +xgene_edac_pmd_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev) { struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; struct dentry *dbgfs_dir; - char name[30]; + char name[10]; - if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) + if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs) return; - /* - * Todo: Switch to common EDAC debug file system for edac device - * when available. - */ - if (!ctx->edac->dfs) { - ctx->edac->dfs = edac_debugfs_create_dir(edac_dev->dev->kobj.name); - if (!ctx->edac->dfs) - return; - } sprintf(name, "PMD%d", ctx->pmd); dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs); if (!dbgfs_dir) @@ -1016,10 +998,294 @@ static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd) return 0; } +/* L3 Error device */ +#define L3C_ESR (0x0A * 4) +#define L3C_ESR_DATATAG_MASK BIT(9) +#define L3C_ESR_MULTIHIT_MASK BIT(8) +#define L3C_ESR_UCEVICT_MASK BIT(6) +#define L3C_ESR_MULTIUCERR_MASK BIT(5) +#define L3C_ESR_MULTICERR_MASK BIT(4) +#define L3C_ESR_UCERR_MASK BIT(3) +#define L3C_ESR_CERR_MASK BIT(2) +#define L3C_ESR_UCERRINTR_MASK BIT(1) +#define L3C_ESR_CERRINTR_MASK BIT(0) +#define L3C_ECR (0x0B * 4) +#define L3C_ECR_UCINTREN BIT(3) +#define L3C_ECR_CINTREN BIT(2) +#define L3C_UCERREN BIT(1) +#define L3C_CERREN BIT(0) +#define L3C_ELR (0x0C * 4) +#define L3C_ELR_ERRSYN(src) ((src & 0xFF800000) >> 23) +#define L3C_ELR_ERRWAY(src) ((src & 0x007E0000) >> 17) +#define L3C_ELR_AGENTID(src) ((src & 0x0001E000) >> 13) +#define L3C_ELR_ERRGRP(src) ((src & 0x00000F00) >> 8) +#define L3C_ELR_OPTYPE(src) ((src & 0x000000F0) >> 4) +#define L3C_ELR_PADDRHIGH(src) (src & 0x0000000F) +#define L3C_AELR (0x0D * 4) +#define L3C_BELR (0x0E * 4) +#define L3C_BELR_BANK(src) (src & 0x0000000F) + +struct xgene_edac_dev_ctx { + struct list_head next; + struct device ddev; + char *name; + struct xgene_edac *edac; + struct edac_device_ctl_info *edac_dev; + int edac_idx; + void __iomem *dev_csr; + int version; +}; + +/* + * Version 1 of the L3 controller has broken single bit correctable logic for + * certain error syndromes. Log them as uncorrectable in that case. + */ +static bool xgene_edac_l3_promote_to_uc_err(u32 l3cesr, u32 l3celr) +{ + if (l3cesr & L3C_ESR_DATATAG_MASK) { + switch (L3C_ELR_ERRSYN(l3celr)) { + case 0x13C: + case 0x0B4: + case 0x007: + case 0x00D: + case 0x00E: + case 0x019: + case 0x01A: + case 0x01C: + case 0x04E: + case 0x041: + return true; + } + } else if (L3C_ELR_ERRSYN(l3celr) == 9) + return true; + + return false; +} + +static void xgene_edac_l3_check(struct edac_device_ctl_info *edac_dev) +{ + struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info; + u32 l3cesr; + u32 l3celr; + u32 l3caelr; + u32 l3cbelr; + + l3cesr = readl(ctx->dev_csr + L3C_ESR); + if (!(l3cesr & (L3C_ESR_UCERR_MASK | L3C_ESR_CERR_MASK))) + return; + + if (l3cesr & L3C_ESR_UCERR_MASK) + dev_err(edac_dev->dev, "L3C uncorrectable error\n"); + if (l3cesr & L3C_ESR_CERR_MASK) + dev_warn(edac_dev->dev, "L3C correctable error\n"); + + l3celr = readl(ctx->dev_csr + L3C_ELR); + l3caelr = readl(ctx->dev_csr + L3C_AELR); + l3cbelr = readl(ctx->dev_csr + L3C_BELR); + if (l3cesr & L3C_ESR_MULTIHIT_MASK) + dev_err(edac_dev->dev, "L3C multiple hit error\n"); + if (l3cesr & L3C_ESR_UCEVICT_MASK) + dev_err(edac_dev->dev, + "L3C dropped eviction of line with error\n"); + if (l3cesr & L3C_ESR_MULTIUCERR_MASK) + dev_err(edac_dev->dev, "L3C multiple uncorrectable error\n"); + if (l3cesr & L3C_ESR_DATATAG_MASK) + dev_err(edac_dev->dev, + "L3C data error syndrome 0x%X group 0x%X\n", + L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRGRP(l3celr)); + else + dev_err(edac_dev->dev, + "L3C tag error syndrome 0x%X Way of Tag 0x%X Agent ID 0x%X Operation type 0x%X\n", + L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRWAY(l3celr), + L3C_ELR_AGENTID(l3celr), L3C_ELR_OPTYPE(l3celr)); + /* + * NOTE: Address [41:38] in L3C_ELR_PADDRHIGH(l3celr). + * Address [37:6] in l3caelr. Lower 6 bits are zero. + */ + dev_err(edac_dev->dev, "L3C error address 0x%08X.%08X bank %d\n", + L3C_ELR_PADDRHIGH(l3celr) << 6 | (l3caelr >> 26), + (l3caelr & 0x3FFFFFFF) << 6, L3C_BELR_BANK(l3cbelr)); + dev_err(edac_dev->dev, + "L3C error status register value 0x%X\n", l3cesr); + + /* Clear L3C error interrupt */ + writel(0, ctx->dev_csr + L3C_ESR); + + if (ctx->version <= 1 && + xgene_edac_l3_promote_to_uc_err(l3cesr, l3celr)) { + edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name); + return; + } + if (l3cesr & L3C_ESR_CERR_MASK) + edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); + if (l3cesr & L3C_ESR_UCERR_MASK) + edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name); +} + +static void xgene_edac_l3_hw_init(struct edac_device_ctl_info *edac_dev, + bool enable) +{ + struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info; + u32 val; + + val = readl(ctx->dev_csr + L3C_ECR); + val |= L3C_UCERREN | L3C_CERREN; + /* On disable, we just disable interrupt but keep error enabled */ + if (edac_dev->op_state == OP_RUNNING_INTERRUPT) { + if (enable) + val |= L3C_ECR_UCINTREN | L3C_ECR_CINTREN; + else + val &= ~(L3C_ECR_UCINTREN | L3C_ECR_CINTREN); + } + writel(val, ctx->dev_csr + L3C_ECR); + + if (edac_dev->op_state == OP_RUNNING_INTERRUPT) { + /* Enable/disable L3 error top level interrupt */ + if (enable) { + xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK, + L3C_UNCORR_ERR_MASK); + xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK, + L3C_CORR_ERR_MASK); + } else { + xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK, + L3C_UNCORR_ERR_MASK); + xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK, + L3C_CORR_ERR_MASK); + } + } +} + +static ssize_t xgene_edac_l3_inject_ctrl_write(struct file *file, + const char __user *data, + size_t count, loff_t *ppos) +{ + struct edac_device_ctl_info *edac_dev = file->private_data; + struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info; + + /* Generate all errors */ + writel(0xFFFFFFFF, ctx->dev_csr + L3C_ESR); + return count; +} + +static const struct file_operations xgene_edac_l3_debug_inject_fops = { + .open = simple_open, + .write = xgene_edac_l3_inject_ctrl_write, + .llseek = generic_file_llseek +}; + +static void +xgene_edac_l3_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev) +{ + struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info; + struct dentry *dbgfs_dir; + char name[10]; + + if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs) + return; + + snprintf(name, sizeof(name), "l3c%d", ctx->edac_idx); + dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs); + if (!dbgfs_dir) + return; + + debugfs_create_file("l3_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev, + &xgene_edac_l3_debug_inject_fops); +} + +static int xgene_edac_l3_add(struct xgene_edac *edac, struct device_node *np, + int version) +{ + struct edac_device_ctl_info *edac_dev; + struct xgene_edac_dev_ctx *ctx; + struct resource res; + void __iomem *dev_csr; + int edac_idx; + int rc = 0; + + if (!devres_open_group(edac->dev, xgene_edac_l3_add, GFP_KERNEL)) + return -ENOMEM; + + rc = of_address_to_resource(np, 0, &res); + if (rc < 0) { + dev_err(edac->dev, "no L3 resource address\n"); + goto err_release_group; + } + dev_csr = devm_ioremap_resource(edac->dev, &res); + if (IS_ERR(dev_csr)) { + dev_err(edac->dev, + "devm_ioremap_resource failed for L3 resource address\n"); + rc = PTR_ERR(dev_csr); + goto err_release_group; + } + + edac_idx = edac_device_alloc_index(); + edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx), + "l3c", 1, "l3c", 1, 0, NULL, 0, + edac_idx); + if (!edac_dev) { + rc = -ENOMEM; + goto err_release_group; + } + + ctx = edac_dev->pvt_info; + ctx->dev_csr = dev_csr; + ctx->name = "xgene_l3_err"; + ctx->edac_idx = edac_idx; + ctx->edac = edac; + ctx->edac_dev = edac_dev; + ctx->ddev = *edac->dev; + ctx->version = version; + edac_dev->dev = &ctx->ddev; + edac_dev->ctl_name = ctx->name; + edac_dev->dev_name = ctx->name; + edac_dev->mod_name = EDAC_MOD_STR; + + if (edac_op_state == EDAC_OPSTATE_POLL) + edac_dev->edac_check = xgene_edac_l3_check; + + xgene_edac_l3_create_debugfs_nodes(edac_dev); + + rc = edac_device_add_device(edac_dev); + if (rc > 0) { + dev_err(edac->dev, "failed edac_device_add_device()\n"); + rc = -ENOMEM; + goto err_ctl_free; + } + + if (edac_op_state == EDAC_OPSTATE_INT) + edac_dev->op_state = OP_RUNNING_INTERRUPT; + + list_add(&ctx->next, &edac->l3s); + + xgene_edac_l3_hw_init(edac_dev, 1); + + devres_remove_group(edac->dev, xgene_edac_l3_add); + + dev_info(edac->dev, "X-Gene EDAC L3 registered\n"); + return 0; + +err_ctl_free: + edac_device_free_ctl_info(edac_dev); +err_release_group: + devres_release_group(edac->dev, xgene_edac_l3_add); + return rc; +} + +static int xgene_edac_l3_remove(struct xgene_edac_dev_ctx *l3) +{ + struct edac_device_ctl_info *edac_dev = l3->edac_dev; + + xgene_edac_l3_hw_init(edac_dev, 0); + edac_device_del_device(l3->edac->dev); + edac_device_free_ctl_info(edac_dev); + return 0; +} + static irqreturn_t xgene_edac_isr(int irq, void *dev_id) { struct xgene_edac *ctx = dev_id; struct xgene_edac_pmd_ctx *pmd; + struct xgene_edac_dev_ctx *node; unsigned int pcp_hp_stat; unsigned int pcp_lp_stat; @@ -1030,9 +1296,8 @@ static irqreturn_t xgene_edac_isr(int irq, void *dev_id) (MCU_CORR_ERR_MASK & pcp_lp_stat)) { struct xgene_edac_mc_ctx *mcu; - list_for_each_entry(mcu, &ctx->mcus, next) { + list_for_each_entry(mcu, &ctx->mcus, next) xgene_edac_mc_check(mcu->mci); - } } list_for_each_entry(pmd, &ctx->pmds, next) { @@ -1040,6 +1305,9 @@ static irqreturn_t xgene_edac_isr(int irq, void *dev_id) xgene_edac_pmd_check(pmd->edac_dev); } + list_for_each_entry(node, &ctx->l3s, next) + xgene_edac_l3_check(node->edac_dev); + return IRQ_HANDLED; } @@ -1058,6 +1326,7 @@ static int xgene_edac_probe(struct platform_device *pdev) platform_set_drvdata(pdev, edac); INIT_LIST_HEAD(&edac->mcus); INIT_LIST_HEAD(&edac->pmds); + INIT_LIST_HEAD(&edac->l3s); spin_lock_init(&edac->lock); mutex_init(&edac->mc_lock); @@ -1122,6 +1391,8 @@ static int xgene_edac_probe(struct platform_device *pdev) } } + edac->dfs = edac_debugfs_create_dir(pdev->dev.kobj.name); + for_each_child_of_node(pdev->dev.of_node, child) { if (!of_device_is_available(child)) continue; @@ -1131,6 +1402,10 @@ static int xgene_edac_probe(struct platform_device *pdev) xgene_edac_pmd_add(edac, child, 1); if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2")) xgene_edac_pmd_add(edac, child, 2); + if (of_device_is_compatible(child, "apm,xgene-edac-l3")) + xgene_edac_l3_add(edac, child, 1); + if (of_device_is_compatible(child, "apm,xgene-edac-l3-v2")) + xgene_edac_l3_add(edac, child, 2); } return 0; @@ -1146,14 +1421,18 @@ static int xgene_edac_remove(struct platform_device *pdev) struct xgene_edac_mc_ctx *temp_mcu; struct xgene_edac_pmd_ctx *pmd; struct xgene_edac_pmd_ctx *temp_pmd; + struct xgene_edac_dev_ctx *node; + struct xgene_edac_dev_ctx *temp_node; - list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next) { + list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next) xgene_edac_mc_remove(mcu); - } - list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next) { + list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next) xgene_edac_pmd_remove(pmd); - } + + list_for_each_entry_safe(node, temp_node, &edac->l3s, next) + xgene_edac_l3_remove(node); + return 0; } |
