diff options
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/amd64_edac.c | 83 | ||||
| -rw-r--r-- | drivers/edac/amd64_edac.h | 5 |
2 files changed, 55 insertions, 33 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index ac9f7985096d..e8d84f89dbcf 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -796,6 +796,11 @@ static int sys_addr_to_csrow(struct mem_ctl_info *mci, u64 sys_addr) static int get_channel_from_ecc_syndrome(struct mem_ctl_info *, u16); +static u16 extract_syndrome(struct err_regs *err) +{ + return ((err->nbsh >> 15) & 0xff) | ((err->nbsl >> 16) & 0xff00); +} + static void amd64_cpu_display_info(struct amd64_pvt *pvt) { if (boot_cpu_data.x86 == 0x11) @@ -888,6 +893,9 @@ static void amd64_dump_misc_regs(struct amd64_pvt *pvt) return; } + amd64_printk(KERN_INFO, "using %s syndromes.\n", + ((pvt->syn_type == 8) ? "x8" : "x4")); + /* Only if NOT ganged does dclr1 have valid info */ if (!dct_ganging_enabled(pvt)) amd64_dump_dramcfg_low(pvt->dclr1, 1); @@ -1101,20 +1109,17 @@ static void k8_read_dram_base_limit(struct amd64_pvt *pvt, int dram) } static void k8_map_sysaddr_to_csrow(struct mem_ctl_info *mci, - struct err_regs *info, - u64 sys_addr) + struct err_regs *err_info, u64 sys_addr) { struct mem_ctl_info *src_mci; - unsigned short syndrome; int channel, csrow; u32 page, offset; + u16 syndrome; - /* Extract the syndrome parts and form a 16-bit syndrome */ - syndrome = HIGH_SYNDROME(info->nbsl) << 8; - syndrome |= LOW_SYNDROME(info->nbsh); + syndrome = extract_syndrome(err_info); /* CHIPKILL enabled */ - if (info->nbcfg & K8_NBCFG_CHIPKILL) { + if (err_info->nbcfg & K8_NBCFG_CHIPKILL) { channel = get_channel_from_ecc_syndrome(mci, syndrome); if (channel < 0) { /* @@ -1123,8 +1128,8 @@ static void k8_map_sysaddr_to_csrow(struct mem_ctl_info *mci, * as suspect. */ amd64_mc_printk(mci, KERN_WARNING, - "unknown syndrome 0x%x - possible error " - "reporting race\n", syndrome); + "unknown syndrome 0x%04x - possible " + "error reporting race\n", syndrome); edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR); return; } @@ -1654,13 +1659,13 @@ static int f10_translate_sysaddr_to_cs(struct amd64_pvt *pvt, u64 sys_addr, * (MCX_ADDR). */ static void f10_map_sysaddr_to_csrow(struct mem_ctl_info *mci, - struct err_regs *info, + struct err_regs *err_info, u64 sys_addr) { struct amd64_pvt *pvt = mci->pvt_info; u32 page, offset; - unsigned short syndrome; int nid, csrow, chan = 0; + u16 syndrome; csrow = f10_translate_sysaddr_to_cs(pvt, sys_addr, &nid, &chan); @@ -1671,8 +1676,7 @@ static void f10_map_sysaddr_to_csrow(struct mem_ctl_info *mci, error_address_to_page_and_offset(sys_addr, &page, &offset); - syndrome = HIGH_SYNDROME(info->nbsl) << 8; - syndrome |= LOW_SYNDROME(info->nbsh); + syndrome = extract_syndrome(err_info); /* * We need the syndromes for channel detection only when we're @@ -1878,7 +1882,7 @@ static u16 x8_vectors[] = { }; static int decode_syndrome(u16 syndrome, u16 *vectors, int num_vecs, - int v_dim) + int v_dim) { unsigned int i, err_sym; @@ -1955,23 +1959,23 @@ static int map_err_sym_to_channel(int err_sym, int sym_size) static int get_channel_from_ecc_syndrome(struct mem_ctl_info *mci, u16 syndrome) { struct amd64_pvt *pvt = mci->pvt_info; - u32 value = 0; - int err_sym = 0; - - if (boot_cpu_data.x86 == 0x10) { - - amd64_read_pci_cfg(pvt->misc_f3_ctl, 0x180, &value); - - /* F3x180[EccSymbolSize]=1 => x8 symbols */ - if (boot_cpu_data.x86_model > 7 && - value & BIT(25)) { - err_sym = decode_syndrome(syndrome, x8_vectors, - ARRAY_SIZE(x8_vectors), 8); - return map_err_sym_to_channel(err_sym, 8); - } + int err_sym = -1; + + if (pvt->syn_type == 8) + err_sym = decode_syndrome(syndrome, x8_vectors, + ARRAY_SIZE(x8_vectors), + pvt->syn_type); + else if (pvt->syn_type == 4) + err_sym = decode_syndrome(syndrome, x4_vectors, + ARRAY_SIZE(x4_vectors), + pvt->syn_type); + else { + amd64_printk(KERN_WARNING, "%s: Illegal syndrome type: %u\n", + __func__, pvt->syn_type); + return err_sym; } - err_sym = decode_syndrome(syndrome, x4_vectors, ARRAY_SIZE(x4_vectors), 4); - return map_err_sym_to_channel(err_sym, 4); + + return map_err_sym_to_channel(err_sym, pvt->syn_type); } /* @@ -2284,6 +2288,7 @@ static void amd64_free_mc_sibling_devices(struct amd64_pvt *pvt) static void amd64_read_mc_registers(struct amd64_pvt *pvt) { u64 msr_val; + u32 tmp; int dram; /* @@ -2349,10 +2354,22 @@ static void amd64_read_mc_registers(struct amd64_pvt *pvt) amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCLR_0, &pvt->dclr0); amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCHR_0, &pvt->dchr0); - if (!dct_ganging_enabled(pvt) && boot_cpu_data.x86 >= 0x10) { - amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCLR_1, &pvt->dclr1); - amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCHR_1, &pvt->dchr1); + if (boot_cpu_data.x86 >= 0x10) { + if (!dct_ganging_enabled(pvt)) { + amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCLR_1, &pvt->dclr1); + amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCHR_1, &pvt->dchr1); + } + amd64_read_pci_cfg(pvt->misc_f3_ctl, EXT_NB_MCA_CFG, &tmp); } + + if (boot_cpu_data.x86 == 0x10 && + boot_cpu_data.x86_model > 7 && + /* F3x180[EccSymbolSize]=1 => x8 symbols */ + tmp & BIT(25)) + pvt->syn_type = 8; + else + pvt->syn_type = 4; + amd64_dump_misc_regs(pvt); } diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 0d4bf5638243..707745b36733 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -382,6 +382,8 @@ enum { #define K8_NBCAP_SECDED BIT(3) #define K8_NBCAP_DCT_DUAL BIT(0) +#define EXT_NB_MCA_CFG 0x180 + /* MSRs */ #define K8_MSR_MCGCTL_NBE BIT(4) @@ -471,6 +473,9 @@ struct amd64_pvt { u32 dram_ctl_select_high; /* DRAM Controller Select High Reg */ u32 online_spare; /* On-Line spare Reg */ + /* x4 or x8 syndromes in use */ + u8 syn_type; + /* temp storage for when input is received from sysfs */ struct err_regs ctl_error_info; |
