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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 17:38:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-14 17:38:38 -0700
commitf65ac45e20b03081ed64f41ce91bb982f8ac258d (patch)
tree615e966b6c792ccd840f994f38591ff5d3d85f72
parent4142e0d1def2c0176c27fd2e810243045a62eb6d (diff)
parent22223c9b417be5fd0ab2cf9ad17eb7bd1e19f7b9 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: x86, mce: do not compile mcelog message on AMD EDAC, AMD: decode FR MCEs EDAC, AMD: decode load store MCEs EDAC, AMD: decode bus unit MCEs EDAC, AMD: decode instruction cache MCEs EDAC, AMD: decode data cache MCEs EDAC, AMD: carve out decoding of MCi_STATUS ErrorCode EDAC, AMD: carve out MCi_STATUS decoding x86, mce: pass mce info to EDAC for decoding amd64_edac: cleanup amd64_decode_bus_error amd64_edac: remove memory and GART TLB error decoders amd64_edac: cleanup/complete NB MCE decoding amd64_edac: cleanup amd64_process_error_info EDAC: beef up ErrorCodeExt error signatures EDAC: move MCE error descriptions to EDAC core
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce.c12
-rw-r--r--drivers/edac/Makefile6
-rw-r--r--drivers/edac/amd64_edac.c328
-rw-r--r--drivers/edac/amd64_edac.h71
-rw-r--r--drivers/edac/amd64_edac_dbg.c2
-rw-r--r--drivers/edac/amd64_edac_err_types.c161
-rw-r--r--drivers/edac/edac_mce_amd.c422
-rw-r--r--drivers/edac/edac_mce_amd.h69
8 files changed, 619 insertions, 452 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 01213048f62..9bfe9d2ea61 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -183,6 +183,11 @@ void mce_log(struct mce *mce)
set_bit(0, &mce_need_notify);
}
+void __weak decode_mce(struct mce *m)
+{
+ return;
+}
+
static void print_mce(struct mce *m)
{
printk(KERN_EMERG
@@ -205,6 +210,8 @@ static void print_mce(struct mce *m)
printk(KERN_EMERG "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n",
m->cpuvendor, m->cpuid, m->time, m->socketid,
m->apicid);
+
+ decode_mce(m);
}
static void print_mce_head(void)
@@ -215,7 +222,10 @@ static void print_mce_head(void)
static void print_mce_tail(void)
{
printk(KERN_EMERG "This is not a software problem!\n"
- "Run through mcelog --ascii to decode and contact your hardware vendor\n");
+#if (!defined(CONFIG_EDAC) || !defined(CONFIG_CPU_SUP_AMD))
+ "Run through mcelog --ascii to decode and contact your hardware vendor\n"
+#endif
+ );
}
#define PANIC_TIMEOUT 5 /* 5 seconds */
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index 98aa4a7db41..cfa033ce53a 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -17,6 +17,10 @@ ifdef CONFIG_PCI
edac_core-objs += edac_pci.o edac_pci_sysfs.o
endif
+ifdef CONFIG_CPU_SUP_AMD
+edac_core-objs += edac_mce_amd.o
+endif
+
obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o
obj-$(CONFIG_EDAC_CPC925) += cpc925_edac.o
obj-$(CONFIG_EDAC_I5000) += i5000_edac.o
@@ -32,7 +36,7 @@ obj-$(CONFIG_EDAC_X38) += x38_edac.o
obj-$(CONFIG_EDAC_I82860) += i82860_edac.o
obj-$(CONFIG_EDAC_R82600) += r82600_edac.o
-amd64_edac_mod-y := amd64_edac_err_types.o amd64_edac.o
+amd64_edac_mod-y := amd64_edac.o
amd64_edac_mod-$(CONFIG_EDAC_DEBUG) += amd64_edac_dbg.o
amd64_edac_mod-$(CONFIG_EDAC_AMD64_ERROR_INJECTION) += amd64_edac_inj.o
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index e2a10bcba7a..173dc4a8416 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -19,6 +19,63 @@ static struct mem_ctl_info *mci_lookup[MAX_NUMNODES];
static struct amd64_pvt *pvt_lookup[MAX_NUMNODES];
/*
+ * See F2x80 for K8 and F2x[1,0]80 for Fam10 and later. The table below is only
+ * for DDR2 DRAM mapping.
+ */
+u32 revf_quad_ddr2_shift[] = {
+ 0, /* 0000b NULL DIMM (128mb) */
+ 28, /* 0001b 256mb */
+ 29, /* 0010b 512mb */
+ 29, /* 0011b 512mb */
+ 29, /* 0100b 512mb */
+ 30, /* 0101b 1gb */
+ 30, /* 0110b 1gb */
+ 31, /* 0111b 2gb */
+ 31, /* 1000b 2gb */
+ 32, /* 1001b 4gb */
+ 32, /* 1010b 4gb */
+ 33, /* 1011b 8gb */
+ 0, /* 1100b future */
+ 0, /* 1101b future */
+ 0, /* 1110b future */
+ 0 /* 1111b future */
+};
+
+/*
+ * Valid scrub rates for the K8 hardware memory scrubber. We map the scrubbing
+ * bandwidth to a valid bit pattern. The 'set' operation finds the 'matching-
+ * or higher value'.
+ *
+ *FIXME: Produce a better mapping/linearisation.
+ */
+
+struct scrubrate scrubrates[] = {
+ { 0x01, 1600000000UL},
+ { 0x02, 800000000UL},
+ { 0x03, 400000000UL},
+ { 0x04, 200000000UL},
+ { 0x05, 100000000UL},
+ { 0x06, 50000000UL},
+ { 0x07, 25000000UL},
+ { 0x08, 12284069UL},
+ { 0x09, 6274509UL},
+ { 0x0A, 3121951UL},
+ { 0x0B, 1560975UL},
+ { 0x0C, 781440UL},
+ { 0x0D, 390720UL},
+ { 0x0E, 195300UL},
+ { 0x0F, 97650UL},
+ { 0x10, 48854UL},
+ { 0x11, 24427UL},
+ { 0x12, 12213UL},
+ { 0x13, 6101UL},
+ { 0x14, 3051UL},
+ { 0x15, 1523UL},
+ { 0x16, 761UL},
+ { 0x00, 0UL}, /* scrubbing off */
+};
+
+/*
* Memory scrubber control interface. For K8, memory scrubbing is handled by
* hardware and can involve L2 cache, dcache as well as the main memory. With
* F10, this is extended to L3 cache scrubbing on CPU models sporting that
@@ -693,7 +750,7 @@ static void find_csrow_limits(struct mem_ctl_info *mci, int csrow,
* specific.
*/
static u64 extract_error_address(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+ struct err_regs *info)
{
struct amd64_pvt *pvt = mci->pvt_info;
@@ -1049,7 +1106,7 @@ static int k8_early_channel_count(struct amd64_pvt *pvt)
/* extract the ERROR ADDRESS for the K8 CPUs */
static u64 k8_get_error_address(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+ struct err_regs *info)
{
return (((u64) (info->nbeah & 0xff)) << 32) +
(info->nbeal & ~0x03);
@@ -1092,7 +1149,7 @@ 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 amd64_error_info_regs *info,
+ struct err_regs *info,
u64 SystemAddress)
{
struct mem_ctl_info *src_mci;
@@ -1101,8 +1158,8 @@ static void k8_map_sysaddr_to_csrow(struct mem_ctl_info *mci,
u32 page, offset;
/* Extract the syndrome parts and form a 16-bit syndrome */
- syndrome = EXTRACT_HIGH_SYNDROME(info->nbsl) << 8;
- syndrome |= EXTRACT_LOW_SYNDROME(info->nbsh);
+ syndrome = HIGH_SYNDROME(info->nbsl) << 8;
+ syndrome |= LOW_SYNDROME(info->nbsh);
/* CHIPKILL enabled */
if (info->nbcfg & K8_NBCFG_CHIPKILL) {
@@ -1311,7 +1368,7 @@ static void amd64_teardown(struct amd64_pvt *pvt)
}
static u64 f10_get_error_address(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+ struct err_regs *info)
{
return (((u64) (info->nbeah & 0xffff)) << 32) +
(info->nbeal & ~0x01);
@@ -1688,7 +1745,7 @@ static int f10_translate_sysaddr_to_cs(struct amd64_pvt *pvt, u64 sys_addr,
* The @sys_addr is usually an error address received from the hardware.
*/
static void f10_map_sysaddr_to_csrow(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info,
+ struct err_regs *info,
u64 sys_addr)
{
struct amd64_pvt *pvt = mci->pvt_info;
@@ -1701,8 +1758,8 @@ static void f10_map_sysaddr_to_csrow(struct mem_ctl_info *mci,
if (csrow >= 0) {
error_address_to_page_and_offset(sys_addr, &page, &offset);
- syndrome = EXTRACT_HIGH_SYNDROME(info->nbsl) << 8;
- syndrome |= EXTRACT_LOW_SYNDROME(info->nbsh);
+ syndrome = HIGH_SYNDROME(info->nbsl) << 8;
+ syndrome |= LOW_SYNDROME(info->nbsh);
/*
* Is CHIPKILL on? If so, then we can attempt to use the
@@ -2045,7 +2102,7 @@ static int get_channel_from_ecc_syndrome(unsigned short syndrome)
* - 0: if no valid error is indicated
*/
static int amd64_get_error_info_regs(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *regs)
+ struct err_regs *regs)
{
struct amd64_pvt *pvt;
struct pci_dev *misc_f3_ctl;
@@ -2094,10 +2151,10 @@ err_reg:
* - 0: if no error is found
*/
static int amd64_get_error_info(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+ struct err_regs *info)
{
struct amd64_pvt *pvt;
- struct amd64_error_info_regs regs;
+ struct err_regs regs;
pvt = mci->pvt_info;
@@ -2152,48 +2209,12 @@ static int amd64_get_error_info(struct mem_ctl_info *mci,
return 1;
}
-static inline void amd64_decode_gart_tlb_error(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
-{
- u32 err_code;
- u32 ec_tt; /* error code transaction type (2b) */
- u32 ec_ll; /* error code cache level (2b) */
-
- err_code = EXTRACT_ERROR_CODE(info->nbsl);
- ec_ll = EXTRACT_LL_CODE(err_code);
- ec_tt = EXTRACT_TT_CODE(err_code);
-
- amd64_mc_printk(mci, KERN_ERR,
- "GART TLB event: transaction type(%s), "
- "cache level(%s)\n", tt_msgs[ec_tt], ll_msgs[ec_ll]);
-}
-
-static inline void amd64_decode_mem_cache_error(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
-{
- u32 err_code;
- u32 ec_rrrr; /* error code memory transaction (4b) */
- u32 ec_tt; /* error code transaction type (2b) */
- u32 ec_ll; /* error code cache level (2b) */
-
- err_code = EXTRACT_ERROR_CODE(info->nbsl);
- ec_ll = EXTRACT_LL_CODE(err_code);
- ec_tt = EXTRACT_TT_CODE(err_code);
- ec_rrrr = EXTRACT_RRRR_CODE(err_code);
-
- amd64_mc_printk(mci, KERN_ERR,
- "cache hierarchy error: memory transaction type(%s), "
- "transaction type(%s), cache level(%s)\n",
- rrrr_msgs[ec_rrrr], tt_msgs[ec_tt], ll_msgs[ec_ll]);
-}
-
-
/*
* Handle any Correctable Errors (CEs) that have occurred. Check for valid ERROR
* ADDRESS and process.
*/
static void amd64_handle_ce(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+ struct err_regs *info)
{
struct amd64_pvt *pvt = mci->pvt_info;
u64 SystemAddress;
@@ -2216,7 +2237,7 @@ static void amd64_handle_ce(struct mem_ctl_info *mci,
/* Handle any Un-correctable Errors (UEs) */
static void amd64_handle_ue(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+ struct err_regs *info)
{
int csrow;
u64 SystemAddress;
@@ -2261,59 +2282,24 @@ static void amd64_handle_ue(struct mem_ctl_info *mci,
}
}
-static void amd64_decode_bus_error(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info)
+static inline void __amd64_decode_bus_error(struct mem_ctl_info *mci,
+ struct err_regs *info)
{
- u32 err_code, ext_ec;
- u32 ec_pp; /* error code participating processor (2p) */
- u32 ec_to; /* error code timed out (1b) */
- u32 ec_rrrr; /* error code memory transaction (4b) */
- u32 ec_ii; /* error code memory or I/O (2b) */
- u32 ec_ll; /* error code cache level (2b) */
+ u32 ec = ERROR_CODE(info->nbsl);
+ u32 xec = EXT_ERROR_CODE(info->nbsl);
+ int ecc_type = info->nbsh & (0x3 << 13);
- ext_ec = EXTRACT_EXT_ERROR_CODE(info->nbsl);
- err_code = EXTRACT_ERROR_CODE(info->nbsl);
-
- ec_ll = EXTRACT_LL_CODE(err_code);
- ec_ii = EXTRACT_II_CODE(err_code);
- ec_rrrr = EXTRACT_RRRR_CODE(err_code);
- ec_to = EXTRACT_TO_CODE(err_code);
- ec_pp = EXTRACT_PP_CODE(err_code);
-
- amd64_mc_printk(mci, KERN_ERR,
- "BUS ERROR:\n"
- " time-out(%s) mem or i/o(%s)\n"
- " participating processor(%s)\n"
- " memory transaction type(%s)\n"
- " cache level(%s) Error Found by: %s\n",
- to_msgs[ec_to],
- ii_msgs[ec_ii],
- pp_msgs[ec_pp],
- rrrr_msgs[ec_rrrr],
- ll_msgs[ec_ll],
- (info->nbsh & K8_NBSH_ERR_SCRUBER) ?
- "Scrubber" : "Normal Operation");
-
- /* If this was an 'observed' error, early out */
- if (ec_pp == K8_NBSL_PP_OBS)
- return; /* We aren't the node involved */
-
- /* Parse out the extended error code for ECC events */
- switch (ext_ec) {
- /* F10 changed to one Extended ECC error code */
- case F10_NBSL_EXT_ERR_RES: /* Reserved field */
- case F10_NBSL_EXT_ERR_ECC: /* F10 ECC ext err code */
- break;
+ /* Bail early out if this was an 'observed' error */
+ if (PP(ec) == K8_NBSL_PP_OBS)
+ return;
- default:
- amd64_mc_printk(mci, KERN_ERR, "NOT ECC: no special error "
- "handling for this error\n");
+ /* Do only ECC errors */
+ if (xec && xec != F10_NBSL_EXT_ERR_ECC)
return;
- }
- if (info->nbsh & K8_NBSH_CECC)
+ if (ecc_type == 2)
amd64_handle_ce(mci, info);
- else if (info->nbsh & K8_NBSH_UECC)
+ else if (ecc_type == 1)
amd64_handle_ue(mci, info);
/*
@@ -2324,139 +2310,26 @@ static void amd64_decode_bus_error(struct mem_ctl_info *mci,
* catastrophic.
*/
if (info->nbsh & K8_NBSH_OVERFLOW)
- edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR
- "Error Overflow set");
+ edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR "Error Overflow");
}
-int amd64_process_error_info(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info,
- int handle_errors)
+void amd64_decode_bus_error(int node_id, struct err_regs *regs)
{
- struct amd64_pvt *pvt;
- struct amd64_error_info_regs *regs;
- u32 err_code, ext_ec;
- int gart_tlb_error = 0;
-
- pvt = mci->pvt_info;
-
- /* If caller doesn't want us to process the error, return */
- if (!handle_errors)
- return 1;
-
- regs = info;
-
- debugf1("NorthBridge ERROR: mci(0x%p)\n", mci);
- debugf1(" MC node(%d) Error-Address(0x%.8x-%.8x)\n",
- pvt->mc_node_id, regs->nbeah, regs->nbeal);
- debugf1(" nbsh(0x%.8x) nbsl(0x%.8x)\n",
- regs->nbsh, regs->nbsl);
- debugf1(" Valid Error=%s Overflow=%s\n",
- (regs->nbsh & K8_NBSH_VALID_BIT) ? "True" : "False",
- (regs->nbsh & K8_NBSH_OVERFLOW) ? "True" : "False");
- debugf1(" Err Uncorrected=%s MCA Error Reporting=%s\n",
- (regs->nbsh & K8_NBSH_UNCORRECTED_ERR) ?
- "True" : "False",
- (regs->nbsh & K8_NBSH_ERR_ENABLE) ?
- "True" : "False");
- debugf1(" MiscErr Valid=%s ErrAddr Valid=%s PCC=%s\n",
- (regs->nbsh & K8_NBSH_MISC_ERR_VALID) ?
- "True" : "False",
- (regs->nbsh & K8_NBSH_VALID_ERROR_ADDR) ?
- "True" : "False",
- (regs->nbsh & K8_NBSH_PCC) ?
- "True" : "False");
- debugf1(" CECC=%s UECC=%s Found by Scruber=%s\n",
- (regs->nbsh & K8_NBSH_CECC) ?
- "True" : "False",
- (regs->nbsh & K8_NBSH_UECC) ?
- "True" : "False",
- (regs->nbsh & K8_NBSH_ERR_SCRUBER) ?
- "True" : "False");
- debugf1(" CORE0=%s CORE1=%s CORE2=%s CORE3=%s\n",
- (regs->nbsh & K8_NBSH_CORE0) ? "True" : "False",
- (regs->nbsh & K8_NBSH_CORE1) ? "True" : "False",
- (regs->nbsh & K8_NBSH_CORE2) ? "True" : "False",
- (regs->nbsh & K8_NBSH_CORE3) ? "True" : "False");
-
-
- err_code = EXTRACT_ERROR_CODE(regs->nbsl);
-
- /* Determine which error type:
- * 1) GART errors - non-fatal, developmental events
- * 2) MEMORY errors
- * 3) BUS errors
- * 4) Unknown error
- */
- if (TEST_TLB_ERROR(err_code)) {
- /*
- * GART errors are intended to help graphics driver developers
- * to detect bad GART PTEs. It is recommended by AMD to disable
- * GART table walk error reporting by default[1] (currently
- * being disabled in mce_cpu_quirks()) and according to the
- * comment in mce_cpu_quirks(), such GART errors can be
- * incorrectly triggered. We may see these errors anyway and
- * unless requested by the user, they won't be reported.
- *
- * [1] section 13.10.1 on BIOS and Kernel Developers Guide for
- * AMD NPT family 0Fh processors
- */
- if (report_gart_errors == 0)
- return 1;
-
- /*
- * Only if GART error reporting is requested should we generate
- * any logs.
- */
- gart_tlb_error = 1;
-
- debugf1("GART TLB error\n");
- amd64_decode_gart_tlb_error(mci, info);
- } else if (TEST_MEM_ERROR(err_code)) {
- debugf1("Memory/Cache error\n");
- amd64_decode_mem_cache_error(mci, info);
- } else if (TEST_BUS_ERROR(err_code)) {
- debugf1("Bus (Link/DRAM) error\n");
- amd64_decode_bus_error(mci, info);
- } else {
- /* shouldn't reach here! */
- amd64_mc_printk(mci, KERN_WARNING,
- "%s(): unknown MCE error 0x%x\n", __func__,
- err_code);
- }
-
- ext_ec = EXTRACT_EXT_ERROR_CODE(regs->nbsl);
- amd64_mc_printk(mci, KERN_ERR,
- "ExtErr=(0x%x) %s\n", ext_ec, ext_msgs[ext_ec]);
+ struct mem_ctl_info *mci = mci_lookup[node_id];
- if (((ext_ec >= F10_NBSL_EXT_ERR_CRC &&
- ext_ec <= F10_NBSL_EXT_ERR_TGT) ||
- (ext_ec == F10_NBSL_EXT_ERR_RMW)) &&
- EXTRACT_LDT_LINK(info->nbsh)) {
-
- amd64_mc_printk(mci, KERN_ERR,
- "Error on hypertransport link: %s\n",
- htlink_msgs[
- EXTRACT_LDT_LINK(info->nbsh)]);
- }
+ __amd64_decode_bus_error(mci, regs);
/*
* Check the UE bit of the NB status high register, if set generate some
* logs. If NOT a GART error, then process the event as a NO-INFO event.
* If it was a GART error, skip that process.
+ *
+ * FIXME: this should go somewhere else, if at all.
*/
- if (regs->nbsh & K8_NBSH_UNCORRECTED_ERR) {
- amd64_mc_printk(mci, KERN_CRIT, "uncorrected error\n");
- if (!gart_tlb_error)
- edac_mc_handle_ue_no_info(mci, "UE bit is set\n");
- }
-
- if (regs->nbsh & K8_NBSH_PCC)
- amd64_mc_printk(mci, KERN_CRIT,
- "PCC (processor context corrupt) set\n");
+ if (regs->nbsh & K8_NBSH_UC_ERR && !report_gart_errors)
+ edac_mc_handle_ue_no_info(mci, "UE bit is set");
- return 1;
}
-EXPORT_SYMBOL_GPL(amd64_process_error_info);
/*
* The main polling 'check' function, called FROM the edac core to perform the
@@ -2464,10 +2337,12 @@ EXPORT_SYMBOL_GPL(amd64_process_error_info);
*/
static void amd64_check(struct mem_ctl_info *mci)
{
- struct amd64_error_info_regs info;
+ struct err_regs regs;
- if (amd64_get_error_info(mci, &info))
- amd64_process_error_info(mci, &info, 1);
+ if (amd64_get_error_info(mci, &regs)) {
+ struct amd64_pvt *pvt = mci->pvt_info;
+ amd_decode_nb_mce(pvt->mc_node_id, &regs, 1);
+ }
}
/*
@@ -3163,6 +3038,13 @@ static int amd64_init_2nd_stage(struct amd64_pvt *pvt)
mci_lookup[node_id] = mci;
pvt_lookup[node_id] = NULL;
+
+ /* register stuff with EDAC MCE */
+ if (report_gart_errors)
+ amd_report_gart_errors(true);
+
+ amd_register_ecc_decoder(amd64_decode_bus_error);
+
return 0;
err_add_mc:
@@ -3229,6 +3111,10 @@ static void __devexit amd64_remove_one_instance(struct pci_dev *pdev)
mci_lookup[pvt->mc_node_id] = NULL;
+ /* unregister from EDAC MCE */
+ amd_report_gart_errors(false);
+ amd_unregister_ecc_decoder(amd64_decode_bus_error);
+
/* Free the EDAC CORE resources */
edac_mc_free(mci);
}
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index ba73015af8e..8ea07e2715d 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -72,6 +72,7 @@
#include <linux/edac.h>
#include <asm/msr.h>
#include "edac_core.h"
+#include "edac_mce_amd.h"
#define amd64_printk(level, fmt, arg...) \
edac_printk(level, "amd64", fmt, ##arg)
@@ -303,21 +304,9 @@ enum {
#define K8_NBSL 0x48
-#define EXTRACT_HIGH_SYNDROME(x) (((x) >> 24) & 0xff)
-#define EXTRACT_EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f)
-
/* Family F10h: Normalized Extended Error Codes */
#define F10_NBSL_EXT_ERR_RES 0x0
-#define F10_NBSL_EXT_ERR_CRC 0x1
-#define F10_NBSL_EXT_ERR_SYNC 0x2
-#define F10_NBSL_EXT_ERR_MST 0x3
-#define F10_NBSL_EXT_ERR_TGT 0x4
-#define F10_NBSL_EXT_ERR_GART 0x5
-#define F10_NBSL_EXT_ERR_RMW 0x6
-#define F10_NBSL_EXT_ERR_WDT 0x7
#define F10_NBSL_EXT_ERR_ECC 0x8
-#define F10_NBSL_EXT_ERR_DEV 0x9
-#define F10_NBSL_EXT_ERR_LINK_DATA 0xA
/* Next two are overloaded values */
#define F10_NBSL_EXT_ERR_LINK_PROTO 0xB
@@ -348,17 +337,6 @@ enum {
#define K8_NBSL_EXT_ERR_CHIPKILL_ECC 0x8
#define K8_NBSL_EXT_ERR_DRAM_PARITY 0xD
-#define EXTRACT_ERROR_CODE(x) ((x) & 0xffff)
-#define TEST_TLB_ERROR(x) (((x) & 0xFFF0) == 0x0010)
-#define TEST_MEM_ERROR(x) (((x) & 0xFF00) == 0x0100)
-#define TEST_BUS_ERROR(x) (((x) & 0xF800) == 0x0800)
-#define EXTRACT_TT_CODE(x) (((x) >> 2) & 0x3)
-#define EXTRACT_II_CODE(x) (((x) >> 2) & 0x3)
-#define EXTRACT_LL_CODE(x) (((x) >> 0) & 0x3)
-#define EXTRACT_RRRR_CODE(x) (((x) >> 4) & 0xf)
-#define EXTRACT_TO_CODE(x) (((x) >> 8) & 0x1)
-#define EXTRACT_PP_CODE(x) (((x) >> 9) & 0x3)
-
/*
* The following are for BUS type errors AFTER values have been normalized by
* shifting right
@@ -368,28 +346,7 @@ enum {
#define K8_NBSL_PP_OBS 0x2
#define K8_NBSL_PP_GENERIC 0x3
-
-#define K8_NBSH 0x4C
-
-#define K8_NBSH_VALID_BIT BIT(31)
-#define K8_NBSH_OVERFLOW BIT(30)
-#define K8_NBSH_UNCORRECTED_ERR BIT(29)
-#define K8_NBSH_ERR_ENABLE BIT(28)
-#define K8_NBSH_MISC_ERR_VALID BIT(27)
-#define K8_NBSH_VALID_ERROR_ADDR BIT(26)
-#define K8_NBSH_PCC BIT(25)
-#define K8_NBSH_CECC BIT(14)
-#define K8_NBSH_UECC BIT(13)
-#define K8_NBSH_ERR_SCRUBER BIT(8)
-#define K8_NBSH_CORE3 BIT(3)
-#define K8_NBSH_CORE2 BIT(2)
-#define K8_NBSH_CORE1 BIT(1)
-#define K8_NBSH_CORE0 BIT(0)
-
-#define EXTRACT_LDT_LINK(x) (((x) >> 4) & 0x7)
#define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF)
-#define EXTRACT_LOW_SYNDROME(x) (((x) >> 15) & 0xff)
-
#define K8_NBEAL 0x50
#define K8_NBEAH 0x54
@@ -455,23 +412,6 @@ enum amd64_chipset_families {
F11_CPUS,
};
-/*
- * Structure to hold:
- *
- * 1) dynamically read status and error address HW registers
- * 2) sysfs entered values
- * 3) MCE values
- *
- * Depends on entry into the modules
- */
-struct amd64_error_info_regs {
- u32 nbcfg;
- u32 nbsh;
- u32 nbsl;
- u32 nbeah;
- u32 nbeal;
-};
-
/* Error injection control structure */
struct error_injection {
u32 section;
@@ -542,7 +482,7 @@ struct amd64_pvt {
u32 online_spare; /* On-Line spare Reg */
/* temp storage for when input is received from sysfs */
- struct amd64_error_info_regs ctl_error_info;
+ struct err_regs ctl_error_info;
/* place to store error injection parameters prior to issue */
struct error_injection injection;
@@ -601,11 +541,11 @@ struct low_ops {
int (*early_channel_count)(struct amd64_pvt *pvt);
u64 (*get_error_address)(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info);
+ struct err_regs *info);
void (*read_dram_base_limit)(struct amd64_pvt *pvt, int dram);
void (*read_dram_ctl_register)(struct amd64_pvt *pvt);
void (*map_sysaddr_to_csrow)(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info,
+ struct err_regs *info,
u64 SystemAddr);
int (*dbam_map_to_pages)(struct amd64_pvt *pvt, int dram_map);
};
@@ -637,8 +577,5 @@ static inline struct low_ops *family_ops(int index)
#define F10_MIN_SCRUB_RATE_BITS 0x5
#define F11_MIN_SCRUB_RATE_BITS 0x6
-int amd64_process_error_info(struct mem_ctl_info *mci,
- struct amd64_error_info_regs *info,
- int handle_errors);
int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
u64 *hole_offset, u64 *hole_size);
diff --git a/drivers/edac/amd64_edac_dbg.c b/drivers/edac/amd64_edac_dbg.c
index 0a41b248a4a..59cf2cf6e11 100644
--- a/drivers/edac/amd64_edac_dbg.c
+++ b/drivers/edac/amd64_edac_dbg.c
@@ -24,7 +24,7 @@ static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data,
/* Process the Mapping request */
/* TODO: Add race prevention */
- amd64_process_error_info(mci, &pvt->ctl_error_info, 1);
+ amd_decode_nb_mce(pvt->mc_node_id, &pvt->ctl_error_info, 1);
return count;
}
diff --git a/drivers/edac/amd64_edac_err_types.c b/drivers/edac/amd64_edac_err_types.c
deleted file mode 100644
index f212ff12a9d..00000000000
--- a/drivers/edac/amd64_edac_err_types.c
+++ /dev/null
@@ -1,161 +0,0 @@
-#include "amd64_edac.h"
-
-/*
- * See F2x80 for K8 and F2x[1,0]80 for Fam10 and later. The table below is only
- * for DDR2 DRAM mapping.
- */
-u32 revf_quad_ddr2_shift[] = {
- 0, /* 0000b NULL DIMM (128mb) */
- 28, /* 0001b 256mb */
- 29, /* 0010b 512mb */
- 29, /* 0011b 512mb */
- 29, /* 0100b 512mb */
- 30, /* 0101b 1gb */
- 30, /* 0110b 1gb */
- 31, /* 0111b 2gb */
- 31, /* 1000b 2gb */
- 32, /* 1001b 4gb */
- 32, /* 1010b 4gb */
- 33, /* 1011b 8gb */
- 0, /* 1100b future */
- 0, /* 1101b future */
- 0, /* 1110b future */
- 0 /* 1111b future */
-};
-
-/*
- * Valid scrub rates for the K8 hardware memory scrubber. We map the scrubbing
- * bandwidth to a valid bit pattern. The 'set' operation finds the 'matching-
- * or higher value'.
- *
- *FIXME: Produce a better mapping/linearisation.
- */
-
-struct scrubrate scrubrates[] = {
- { 0x01, 1600000000UL},
- { 0x02, 800000000UL},
- { 0x03, 400000000UL},
- { 0x04, 200000000UL},
- { 0x05, 100000000UL},
- { 0x06, 50000000UL},
- { 0x07, 25000000UL},
- { 0x08, 12284069UL},
- { 0x09, 6274509UL},
- { 0x0A, 3121951UL},
- { 0x0B, 1560975UL},
- { 0x0C, 781440UL},
- { 0x0D, 390720UL},
- { 0x0E, 195300UL},
- { 0x0F, 97650UL},
- { 0x10, 48854UL},
- { 0x11, 24427UL},
- { 0x12, 12213UL},
- { 0x13, 6101UL},
- { 0x14, 3051UL},
- { 0x15, 1523UL},
- { 0x16, 761UL},
- { 0x00, 0UL}, /* scrubbing off */
-};
-
-/*
- * string representation for the different MCA reported error types, see F3x48
- * or MSR0000_0411.
- */
-const char *tt_msgs[] = { /* transaction type */
- "instruction",
- "data",
- "generic",
- "reserved"
-};
-
-const char *ll_msgs[] = { /* cache level */
- "L0",
- "L1",
- "L2",
- "L3/generic"
-};
-
-const char *rrrr_msgs[] = {
- "generic",
- "generic read",
- "generic write",
- "data read",
- "data write",
- "inst fetch",
- "prefetch",
- "evict",
- "snoop",
- "reserved RRRR= 9",
- "reserved RRRR= 10",
- "reserved RRRR= 11",
- "reserved RRRR= 12",
- "reserved RRRR= 13",
- "reserved RRRR= 14",
- "reserved RRRR= 15"
-};
-
-const char *pp_msgs[] = { /* participating processor */
- "local node originated (SRC)",
- "local node responded to request (RES)",
- "local node observed as 3rd party (OBS)",
- "generic"
-};
-
-const char *to_msgs[] = {
- "no timeout",
- "timed out"
-};
-
-const char *ii_msgs[] = { /* memory or i/o */
- "mem access",
- "reserved",
- "i/o access",
- "generic"
-};
-
-/* Map the 5 bits of Extended Error code to the string table. */
-const char *ext_msgs[] = { /* extended error */
- "K8 ECC error/F10 reserved", /* 0_0000b */
- "CRC error", /* 0_0001b */
- "sync error", /* 0_0010b */
- "mst abort", /* 0_0011b */
- "tgt abort", /* 0_0100b */
- "GART error", /* 0_0101b */
- "RMW error", /* 0_0110b */
- "Wdog timer error", /* 0_0111b */
- "F10-ECC/K8-Chipkill error", /* 0_1000b */
- "DEV Error", /* 0_1001b */
- "Link Data error", /* 0_1010b */
- "Link or L3 Protocol error", /* 0_1011b */
- "NB Array error", /* 0_1100b */
- "DRAM Parity error", /* 0_1101b */
- "Link Retry/GART Table Walk/DEV Table Walk error", /* 0_1110b */
- "Res 0x0ff error", /* 0_1111b */
- "Res 0x100 error", /* 1_0000b */
- "Res 0x101 error", /* 1_0001b */
- "Res 0x102 error", /* 1_0010b */
- "Res 0x103 error", /* 1_0011b */
- "Res 0x104 error", /* 1_0100b */
- "Res 0x105 error", /* 1_0101b */
- "Res 0x106 error", /* 1_0110b */
- "Res 0x107 error", /* 1_0111b */
- "Res 0x108 error", /* 1_1000b */
- "Res 0x109 error", /* 1_1001b */
- "Res 0x10A error", /* 1_1010b */
- "Res 0x10B error", /* 1_1011b */
- "L3 Cache Data error", /* 1_1100b */
- "L3 CacheTag error", /* 1_1101b */
- "L3 Cache LRU error", /* 1_1110b */
- "Res 0x1FF error" /* 1_1111b */
-};
-
-const char *htlink_msgs[] = {
- "none",
- "1",
- "2",
- "1 2",
- "3",
- "1 3",
- "2 3",
- "1 2 3"
-};
diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
new file mode 100644
index 00000000000..c8ca7136dac
--- /dev/null
+++ b/drivers/edac/edac_mce_amd.c
@@ -0,0 +1,422 @@
+#include <linux/module.h>
+#include "edac_mce_amd.h"
+
+static bool report_gart_errors;
+static void (*nb_bus_decoder)(int node_id, struct err_regs *regs);
+
+void amd_report_gart_errors(bool v)
+{
+ report_gart_errors = v;
+}
+EXPORT_SYMBOL_GPL(amd_report_gart_errors);
+
+void amd_register_ecc_decoder(void (*f)(int, struct err_regs *))
+{
+ nb_bus_decoder = f;
+}
+EXPORT_SYMBOL_GPL(amd_register_ecc_decoder);
+
+void amd_unregister_ecc_decoder(void (*f)(int, struct err_regs *))
+{
+ if (nb_bus_decoder) {
+ WARN_ON(nb_bus_decoder != f);
+
+ nb_bus_decoder = NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(amd_unregister_ecc_decoder);
+
+/*
+ * string representation for the different MCA reported error types, see F3x48
+ * or MSR0000_0411.
+ */
+const char *tt_msgs[] = { /* transaction type */
+ "instruction",
+ "data",
+ "generic",
+ "reserved"
+};
+EXPORT_SYMBOL_GPL(tt_msgs);
+
+const char *ll_msgs[] = { /* cache level */
+ "L0",
+ "L1",
+ "L2",
+ "L3/generic"
+};
+EXPORT_SYMBOL_GPL(ll_msgs);
+
+const char *rrrr_msgs[] = {
+ "generic",
+ "generic read",
+ "generic write",
+ "data read",
+ "data write",
+ "inst fetch",
+ "prefetch",
+ "evict",
+ "snoop",
+ "reserved RRRR= 9",
+ "reserved RRRR= 10",
+ "reserved RRRR= 11",
+ "reserved RRRR= 12",
+ "reserved RRRR= 13",
+ "reserved RRRR= 14",
+ "reserved RRRR= 15"
+};
+EXPORT_SYMBOL_GPL(rrrr_msgs);
+
+const char *pp_msgs[] = { /* participating processor */
+ "local node originated (SRC)",
+ "local node responded to request (RES)",
+ "local node observed as 3rd party (OBS)",
+ "generic"
+};
+EXPORT_SYMBOL_GPL(pp_msgs);
+
+const char *to_msgs[] = {
+ "no timeout",
+ "timed out"
+};
+EXPORT_SYMBOL_GPL(to_msgs);
+
+const char *ii_msgs[] = { /* memory or i/o */
+ "mem access",
+ "reserved",
+ "i/o access",
+ "generic"
+};
+EXPORT_SYMBOL_GPL(ii_msgs);
+
+/*
+ * Map the 4 or 5 (family-specific) bits of Extended Error code to the
+ * string table.
+ */
+const char *ext_msgs[] = {
+ "K8 ECC error", /* 0_0000b */
+ "CRC error on link", /* 0_0001b */
+ "Sync error packets on link", /* 0_0010b */
+ "Master Abort during link operation", /* 0_0011b */
+ "Target Abort during link operation", /* 0_0100b */
+ "Invalid GART PTE entry during table walk", /* 0_0101b */
+ "Unsupported atomic RMW command received", /* 0_0110b */
+ "WDT error: NB transaction timeout", /* 0_0111b */
+ "ECC/ChipKill ECC error", /* 0_1000b */
+ "SVM DEV Error", /* 0_1001b */
+ "Link Data error", /* 0_1010b */
+ "Link/L3/Probe Filter Protocol error", /* 0_1011b */
+ "NB Internal Arrays Parity error", /* 0_1100b */
+ "DRAM Address/Control Parity error", /* 0_1101b */
+ "Link Transmission error", /* 0_1110b */
+ "GART/DEV Table Walk Data error" /* 0_1111b */
+ "Res 0x100 error", /* 1_0000b */
+ "Res 0x101 error", /* 1_0001b */
+ "Res 0x102 error", /* 1_0010b */
+ "Res 0x103 error", /* 1_0011b */
+ "Res 0x104 error", /* 1_0100b */
+ "Res 0x105 error", /* 1_0101b */
+ "Res 0x106 error", /* 1_0110b */
+ "Res 0x107 error", /* 1_0111b */
+ "Res 0x108 error", /* 1_1000b */
+ "Res 0x109 error", /* 1_1001b */
+ "Res 0x10A error", /* 1_1010b */
+ "Res 0x10B error", /* 1_1011b */
+ "ECC error in L3 Cache Data", /* 1_1100b */
+ "L3 Cache Tag error", /* 1_1101b */
+ "L3 Cache LRU Parity error", /* 1_1110b */
+ "Probe Filter error" /* 1_1111b */
+};
+EXPORT_SYMBOL_GPL(ext_msgs);
+
+static void amd_decode_dc_mce(u64 mc0_status)
+{
+ u32 ec = mc0_status & 0xffff;
+ u32 xec = (mc0_status >> 16) & 0xf;
+
+ pr_emerg(" Data Cache Error");
+
+ if (xec == 1 && TLB_ERROR(ec))
+ pr_cont(": %s TLB multimatch.\n", LL_MSG(ec));
+ else if (xec == 0) {
+ if (mc0_status & (1ULL << 40))
+ pr_cont(" during Data Scrub.\n");
+ else if (TLB_ERROR(ec))
+ pr_cont(": %s TLB parity error.\n", LL_MSG(ec));
+ else if (MEM_ERROR(ec)) {
+ u8 ll = ec & 0x3;
+ u8 tt = (ec >> 2) & 0x3;
+ u8 rrrr = (ec >> 4) & 0xf;
+
+ /* see F10h BKDG (31116), Table 92. */
+ if (ll == 0x1) {
+ if (tt != 0x1)
+ goto wrong_dc_mce;
+
+ pr_cont(": Data/Tag %s error.\n", RRRR_MSG(ec));
+
+ } else if (ll == 0x2 && rrrr == 0x3)
+ pr_cont(" during L1 linefill from L2.\n");
+ else
+ goto wrong_dc_mce;
+ } else if (BUS_ERROR(ec) && boot_cpu_data.x86 == 0xf)
+ pr_cont(" during system linefill.\n");
+ else
+ goto wrong_dc_mce;
+ } else
+ goto wrong_dc_mce;
+
+ return;
+
+wrong_dc_mce:
+ pr_warning("Corrupted DC MCE info?\n");
+}
+
+static void amd_decode_ic_mce(u64 mc1_status)
+{
+ u32 ec = mc1_status & 0xffff;
+ u32 xec = (mc1_status >> 16) & 0xf;
+
+ pr_emerg(" Instruction Cache Error");
+
+ if (xec == 1 && TLB_ERROR(ec))
+ pr_cont(": %s TLB multimatch.\n", LL_MSG(ec));
+ else if (xec == 0) {
+ if (TLB_ERROR(ec))
+ pr_cont(": %s TLB Parity error.\n", LL_MSG(ec));
+ else if (BUS_ERROR(ec)) {
+ if (boot_cpu_data.x86 == 0xf &&
+ (mc1_status & (1ULL << 58)))
+ pr_cont(" during system linefill.\n");
+ else
+ pr_cont(" during attempted NB data read.\n");
+ } else if (MEM_ERROR(ec)) {
+ u8 ll = ec & 0x3;
+ u8 rrrr = (ec >> 4) & 0xf;
+
+ if (ll == 0x2)
+ pr_cont(" during a linefill from L2.\n");
+ else if (ll == 0x1) {
+
+ switch (rrrr) {
+ case 0x5:
+ pr_cont(": Parity error during "
+ "data load.\n");
+ break;
+
+ case 0x7:
+ pr_cont(": Copyback Parity/Victim"
+ " error.\n");
+ break;
+
+ case 0x8:
+ pr_cont(": Tag Snoop error.\n");
+ break;
+
+ default:
+ goto wrong_ic_mce;
+ break;
+ }
+ }
+ } else
+ goto wrong_ic_mce;
+ } else
+ goto wrong_ic_mce;
+
+ return;
+
+wrong_ic_mce:
+ pr_warning("Corrupted IC MCE info?\n");
+}
+
+static void amd_decode_bu_mce(u64 mc2_status)
+{
+ u32 ec = mc2_status & 0xffff;
+ u32 xec = (mc2_status >> 16) & 0xf;
+
+ pr_emerg(" Bus Unit Error");
+
+ if (xec == 0x1)
+ pr_cont(" in the write data buffers.\n");
+ else if (xec == 0x3)
+ pr_cont(" in the victim data buffers.\n");
+ else if (xec == 0x2 && MEM_ERROR(ec))
+ pr_cont(": %s error in the L2 cache tags.\n", RRRR_MSG(ec));
+ else if (xec == 0x0) {
+ if (TLB_ERROR(ec))
+ pr_cont(": %s error in a Page Descriptor Cache or "
+ "Guest TLB.\n", TT_MSG(ec));
+ else if (BUS_ERROR(ec))
+ pr_cont(": %s/ECC error in data read from NB: %s.\n",
+ RRRR_MSG(ec), PP_MSG(ec));
+ else if (MEM_ERROR(ec)) {
+ u8 rrrr = (ec >> 4) & 0xf;
+
+ if (rrrr >= 0x7)
+ pr_cont(": %s error during data copyback.\n",
+ RRRR_MSG(ec));
+ else if (rrrr <= 0x1)
+ pr_cont(": %s parity/ECC error during data "
+ "access from L2.\n", RRRR_MSG(ec));
+ else
+ goto wrong_bu_mce;
+ } else
+ goto wrong_bu_mce;
+ } else
+ goto wrong_bu_mce;
+
+ return;
+
+wrong_bu_mce:
+ pr_warning("Corrupted BU MCE info?\n");
+}
+
+static void amd_decode_ls_mce(u64 mc3_status)
+{
+ u32 ec = mc3_status & 0xffff;
+ u32 xec = (mc3_status >> 16) & 0xf;
+
+ pr_emerg(" Load Store Error");
+
+ if (xec == 0x0) {
+ u8 rrrr = (ec >> 4) & 0xf;
+
+ if (!BUS_ERROR(ec) || (rrrr != 0x3 && rrrr != 0x4))
+ goto wrong_ls_mce;
+
+ pr_cont(" during %s.\n", RRRR_MSG(ec));
+ }
+ return;
+
+wrong_ls_mce:
+ pr_warning("Corrupted LS MCE info?\n");
+}
+
+void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
+{
+ u32 ec = ERROR_CODE(regs->nbsl);
+ u32 xec = EXT_ERROR_CODE(regs->nbsl);
+
+ if (!handle_errors)
+ return;
+
+ pr_emerg(" Northbridge Error, node %d", node_id);
+
+ /*
+ * F10h, revD can disable ErrCpu[3:0] so check that first and also the
+ * value encoding has changed so interpret those differently
+ */
+ if ((boot_cpu_data.x86 == 0x10) &&
+ (boot_cpu_data.x86_model > 8)) {
+ if (regs->nbsh & K8_NBSH_ERR_CPU_VAL)
+ pr_cont(", core: %u\n", (u8)(regs->nbsh & 0xf));
+ } else {
+ pr_cont(", core: %d\n", ilog2((regs->nbsh & 0xf)));
+ }
+
+
+ pr_emerg("%s.\n", EXT_ERR_MSG(xec));
+
+ if (BUS_ERROR(ec) && nb_bus_decoder)
+ nb_bus_decoder(node_id, regs);
+}
+EXPORT_SYMBOL_GPL(amd_decode_nb_mce);
+
+static void amd_decode_fr_mce(u64 mc5_status)
+{
+ /* we have only one error signature so match all fields at once. */
+ if ((mc5_status & 0xffff) == 0x0f0f)
+ pr_emerg(" FR Error: CPU Watchdog timer expire.\n");
+ else
+ pr_warning("Corrupted FR MCE info?\n");
+}
+
+static inline void amd_decode_err_code(unsigned int ec)
+{
+ if (TLB_ERROR(ec)) {
+ /*
+ * GART errors are intended to help graphics driver developers
+ * to detect bad GART PTEs. It is recommended by AMD to disable
+ * GART table walk error reporting by default[1] (currently
+ * being disabled in mce_cpu_quirks()) and according to the
+ * comment in mce_cpu_quirks(), such GART errors can be
+ * incorrectly triggered. We may see these errors anyway and
+ * unless requested by the user, they won't be reported.
+ *
+ * [1] section 13.10.1 on BIOS and Kernel Developers Guide for
+ * AMD NPT family 0Fh processors
+ */
+ if (!report_gart_errors)
+ return;
+
+ pr_emerg(" Transaction: %s, Cache Level %s\n",
+ TT_MSG(ec), LL_MSG(ec));
+ } else if (MEM_ERROR(ec)) {
+ pr_emerg(" Transaction: %s, Type: %s, Cache Level: %s",
+ RRRR_MSG(ec), TT_MSG(ec), LL_MSG(ec));
+ } else if (BUS_ERROR(ec)) {
+ pr_emerg(" Transaction type: %s(%s), %s, Cache Level: %s, "
+ "Participating Processor: %s\n",
+ RRRR_MSG(ec), II_MSG(ec), TO_MSG(ec), LL_MSG(ec),
+ PP_MSG(ec));
+ } else
+ pr_warning("Huh? Unknown MCE error 0x%x\n", ec);
+}
+
+void decode_mce(struct mce *m)
+{
+ struct err_regs regs;
+ int node, ecc;
+
+ pr_emerg("MC%d_STATUS: ", m->bank);
+
+ pr_cont("%sorrected error, report: %s, MiscV: %svalid, "
+ "CPU context corrupt: %s",
+ ((m->status & MCI_STATUS_UC) ? "Unc" : "C"),
+ ((m->status & MCI_STATUS_EN) ? "yes" : "no"),
+ ((m->status & MCI_STATUS_MISCV) ? "" : "in"),
+ ((m->status & MCI_STATUS_PCC) ? "yes" : "no"));
+
+ /* do the two bits[14:13] together */
+ ecc = m->status & (3ULL << 45);
+ if (ecc)
+ pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U"));
+
+ pr_cont("\n");
+
+ switch (m->bank) {
+ case 0:
+ amd_decode_dc_mce(m->status);
+ break;
+
+ case 1:
+ amd_decode_ic_mce(m->status);
+ break;
+
+ case 2:
+ amd_decode_bu_mce(m->status);
+ break;
+
+ case 3:
+ amd_decode_ls_mce(m->status);
+ break;
+
+ case 4:
+ regs.nbsl = (u32) m->status;
+ regs.nbsh = (u32)(m->status >> 32);
+ regs.nbeal = (u32) m->addr;
+ regs.nbeah = (u32)(m->addr >> 32);
+ node = per_cpu(cpu_llc_id, m->extcpu);
+
+ amd_decode_nb_mce(node, &regs, 1);
+ break;
+
+ case 5:
+ amd_decode_fr_mce(m->status);
+ break;
+
+ default:
+ break;
+ }
+
+ amd_decode_err_code(m->status & 0xffff);
+}
diff --git a/drivers/edac/edac_mce_amd.h b/drivers/edac/edac_mce_amd.h
new file mode 100644
index 00000000000..df23ee065f7
--- /dev/null
+++ b/drivers/edac/edac_mce_amd.h
@@ -0,0 +1,69 @@
+#ifndef _EDAC_MCE_AMD_H
+#define _EDAC_MCE_AMD_H
+
+#include <asm/mce.h>
+
+#define ERROR_CODE(x) ((x) & 0xffff)
+#define EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f)
+#define EXT_ERR_MSG(x) ext_msgs[EXT_ERROR_CODE(x)]
+
+#define LOW_SYNDROME(x) (((x) >> 15) & 0xff)
+#define HIGH_SYNDROME(x) (((x) >> 24) & 0xff)
+
+#define TLB_ERROR(x) (((x) & 0xFFF0) == 0x0010)
+#define MEM_ERROR(x) (((x) & 0xFF00) == 0x0100)
+#define BUS_ERROR(x) (((x) & 0xF800) == 0x0800)
+
+#define TT(x) (((x) >> 2) & 0x3)
+#define TT_MSG(x) tt_msgs[TT(x)]
+#define II(x) (((x) >> 2) & 0x3)
+#define II_MSG(x) ii_msgs[II(x)]
+#define LL(x) (((x) >> 0) & 0x3)
+#define LL_MSG(x) ll_msgs[LL(x)]
+#define RRRR(x) (((x) >> 4) & 0xf)
+#define RRRR_MSG(x) rrrr_msgs[RRRR(x)]
+#define TO(x) (((x) >> 8) & 0x1)
+#define TO_MSG(x) to_msgs[TO(x)]
+#define PP(x) (((x) >> 9) & 0x3)
+#define PP_MSG(x) pp_msgs[PP(x)]
+
+#define K8_NBSH 0x4C
+
+#define K8_NBSH_VALID_BIT BIT(31)
+#define K8_NBSH_OVERFLOW BIT(30)
+#define K8_NBSH_UC_ERR BIT(29)
+#define K8_NBSH_ERR_EN BIT(28)
+#define K8_NBSH_MISCV BIT(27)
+#define K8_NBSH_VALID_ERROR_ADDR BIT(26)
+#define K8_NBSH_PCC BIT(25)
+#define K8_NBSH_ERR_CPU_VAL BIT(24)
+#define K8_NBSH_CECC BIT(14)
+#define K8_NBSH_UECC BIT(13)
+#define K8_NBSH_ERR_SCRUBER BIT(8)
+
+extern const char *tt_msgs[];
+extern const char *ll_msgs[];
+extern const char *rrrr_msgs[];
+extern const char *pp_msgs[];
+extern const char *to_msgs[];
+extern const char *ii_msgs[];
+extern const char *ext_msgs[];
+
+/*
+ * relevant NB regs
+ */
+struct err_regs {
+ u32 nbcfg;
+ u32 nbsh;
+ u32 nbsl;
+ u32 nbeah;
+ u32 nbeal;
+};
+
+
+void amd_report_gart_errors(bool);
+void amd_register_ecc_decoder(void (*f)(int, struct err_regs *));
+void amd_unregister_ecc_decoder(void (*f)(int, struct err_regs *));
+void amd_decode_nb_mce(int, struct err_regs *, int);
+
+#endif /* _EDAC_MCE_AMD_H */