diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/ras.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/ras.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index 851ce326874a..3500ad982706 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -50,6 +50,101 @@ static irqreturn_t ras_hotplug_interrupt(int irq, void *dev_id); static irqreturn_t ras_epow_interrupt(int irq, void *dev_id); static irqreturn_t ras_error_interrupt(int irq, void *dev_id); +/* RTAS pseries MCE errorlog section. */ +struct pseries_mc_errorlog { + __be32 fru_id; + __be32 proc_id; + u8 error_type; + /* + * sub_err_type (1 byte). Bit fields depends on error_type + * + * MSB0 + * | + * V + * 01234567 + * XXXXXXXX + * + * For error_type == MC_ERROR_TYPE_UE + * XXXXXXXX + * X 1: Permanent or Transient UE. + * X 1: Effective address provided. + * X 1: Logical address provided. + * XX 2: Reserved. + * XXX 3: Type of UE error. + * + * For error_type != MC_ERROR_TYPE_UE + * XXXXXXXX + * X 1: Effective address provided. + * XXXXX 5: Reserved. + * XX 2: Type of SLB/ERAT/TLB error. + */ + u8 sub_err_type; + u8 reserved_1[6]; + __be64 effective_address; + __be64 logical_address; +} __packed; + +/* RTAS pseries MCE error types */ +#define MC_ERROR_TYPE_UE 0x00 +#define MC_ERROR_TYPE_SLB 0x01 +#define MC_ERROR_TYPE_ERAT 0x02 +#define MC_ERROR_TYPE_TLB 0x04 +#define MC_ERROR_TYPE_D_CACHE 0x05 +#define MC_ERROR_TYPE_I_CACHE 0x07 + +/* RTAS pseries MCE error sub types */ +#define MC_ERROR_UE_INDETERMINATE 0 +#define MC_ERROR_UE_IFETCH 1 +#define MC_ERROR_UE_PAGE_TABLE_WALK_IFETCH 2 +#define MC_ERROR_UE_LOAD_STORE 3 +#define MC_ERROR_UE_PAGE_TABLE_WALK_LOAD_STORE 4 + +#define MC_ERROR_SLB_PARITY 0 +#define MC_ERROR_SLB_MULTIHIT 1 +#define MC_ERROR_SLB_INDETERMINATE 2 + +#define MC_ERROR_ERAT_PARITY 1 +#define MC_ERROR_ERAT_MULTIHIT 2 +#define MC_ERROR_ERAT_INDETERMINATE 3 + +#define MC_ERROR_TLB_PARITY 1 +#define MC_ERROR_TLB_MULTIHIT 2 +#define MC_ERROR_TLB_INDETERMINATE 3 + +static inline u8 rtas_mc_error_sub_type(const struct pseries_mc_errorlog *mlog) +{ + switch (mlog->error_type) { + case MC_ERROR_TYPE_UE: + return (mlog->sub_err_type & 0x07); + case MC_ERROR_TYPE_SLB: + case MC_ERROR_TYPE_ERAT: + case MC_ERROR_TYPE_TLB: + return (mlog->sub_err_type & 0x03); + default: + return 0; + } +} + +static +inline u64 rtas_mc_get_effective_addr(const struct pseries_mc_errorlog *mlog) +{ + __be64 addr = 0; + + switch (mlog->error_type) { + case MC_ERROR_TYPE_UE: + if (mlog->sub_err_type & 0x40) + addr = mlog->effective_address; + break; + case MC_ERROR_TYPE_SLB: + case MC_ERROR_TYPE_ERAT: + case MC_ERROR_TYPE_TLB: + if (mlog->sub_err_type & 0x80) + addr = mlog->effective_address; + default: + break; + } + return be64_to_cpu(addr); +} /* * Enable the hotplug interrupt late because processing them may touch other |