diff options
Diffstat (limited to 'drivers/misc/sgi-gru')
| -rw-r--r-- | drivers/misc/sgi-gru/gru_instructions.h | 19 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 8 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/gruhandles.h | 3 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/grukservices.c | 3 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/gruprocfs.c | 1 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/grutables.h | 1 |
6 files changed, 24 insertions, 11 deletions
diff --git a/drivers/misc/sgi-gru/gru_instructions.h b/drivers/misc/sgi-gru/gru_instructions.h index 2feb885ca96..eb9140d32e6 100644 --- a/drivers/misc/sgi-gru/gru_instructions.h +++ b/drivers/misc/sgi-gru/gru_instructions.h @@ -253,32 +253,37 @@ struct gru_instruction { #define CBE_CAUSE_HA_RESPONSE_FATAL (1 << 13) #define CBE_CAUSE_HA_RESPONSE_NON_FATAL (1 << 14) #define CBE_CAUSE_ADDRESS_SPACE_DECODE_ERROR (1 << 15) -#define CBE_CAUSE_RESPONSE_DATA_ERROR (1 << 16) -#define CBE_CAUSE_PROTOCOL_STATE_DATA_ERROR (1 << 17) +#define CBE_CAUSE_PROTOCOL_STATE_DATA_ERROR (1 << 16) +#define CBE_CAUSE_RA_RESPONSE_DATA_ERROR (1 << 17) +#define CBE_CAUSE_HA_RESPONSE_DATA_ERROR (1 << 18) /* CBE cbrexecstatus bits */ #define CBR_EXS_ABORT_OCC_BIT 0 #define CBR_EXS_INT_OCC_BIT 1 #define CBR_EXS_PENDING_BIT 2 #define CBR_EXS_QUEUED_BIT 3 -#define CBR_EXS_TLBHW_BIT 4 +#define CBR_EXS_TLB_INVAL_BIT 4 #define CBR_EXS_EXCEPTION_BIT 5 #define CBR_EXS_ABORT_OCC (1 << CBR_EXS_ABORT_OCC_BIT) #define CBR_EXS_INT_OCC (1 << CBR_EXS_INT_OCC_BIT) #define CBR_EXS_PENDING (1 << CBR_EXS_PENDING_BIT) #define CBR_EXS_QUEUED (1 << CBR_EXS_QUEUED_BIT) -#define CBR_EXS_TLBHW (1 << CBR_EXS_TLBHW_BIT) +#define CBR_TLB_INVAL (1 << CBR_EXS_TLB_INVAL_BIT) #define CBR_EXS_EXCEPTION (1 << CBR_EXS_EXCEPTION_BIT) /* * Exceptions are retried for the following cases. If any OTHER bits are set * in ecause, the exception is not retryable. */ -#define EXCEPTION_RETRY_BITS (CBE_CAUSE_RESPONSE_DATA_ERROR | \ - CBE_CAUSE_RA_REQUEST_TIMEOUT | \ +#define EXCEPTION_RETRY_BITS (CBE_CAUSE_EXECUTION_HW_ERROR | \ CBE_CAUSE_TLBHW_ERROR | \ - CBE_CAUSE_HA_REQUEST_TIMEOUT) + CBE_CAUSE_RA_REQUEST_TIMEOUT | \ + CBE_CAUSE_RA_RESPONSE_NON_FATAL | \ + CBE_CAUSE_HA_RESPONSE_NON_FATAL | \ + CBE_CAUSE_RA_RESPONSE_DATA_ERROR | \ + CBE_CAUSE_HA_RESPONSE_DATA_ERROR \ + ) /* Message queue head structure */ union gru_mesqhead { diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 8443e90f9f6..a489807613f 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -339,8 +339,12 @@ static int gru_try_dropin(struct gru_thread_state *gts, * Might be a hardware race OR a stupid user. Ignore FMM because FMM * is a transient state. */ - if (tfh->status != TFHSTATUS_EXCEPTION) - goto failnoexception; + if (tfh->status != TFHSTATUS_EXCEPTION) { + gru_flush_cache(tfh); + if (tfh->status != TFHSTATUS_EXCEPTION) + goto failnoexception; + STAT(tfh_stale_on_fault); + } if (tfh->state == TFHSTATE_IDLE) goto failidle; if (tfh->state == TFHSTATE_MISS_FMM && cb) diff --git a/drivers/misc/sgi-gru/gruhandles.h b/drivers/misc/sgi-gru/gruhandles.h index 9f41e2cc09d..99ec82678f5 100644 --- a/drivers/misc/sgi-gru/gruhandles.h +++ b/drivers/misc/sgi-gru/gruhandles.h @@ -255,7 +255,8 @@ struct gru_tlb_fault_handle { unsigned int state:3; unsigned int fill3:1; - unsigned int cause:7; + unsigned int cause:6; + unsigned int cb_int:1; unsigned int fill4:1; unsigned int indexway:12; /* DW 0 - high 32 */ diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c index 7d7952b27e0..ba6fcd963f3 100644 --- a/drivers/misc/sgi-gru/grukservices.c +++ b/drivers/misc/sgi-gru/grukservices.c @@ -406,7 +406,8 @@ static int gru_retry_exception(void *cb) return CBS_IDLE; gru_get_cb_exception_detail(cb, &excdet); - if (excdet.ecause & ~EXCEPTION_RETRY_BITS) + if ((excdet.ecause & ~EXCEPTION_RETRY_BITS) || + (excdet.cbrexecstatus & CBR_EXS_ABORT_OCC)) break; if (retry-- == 0) break; diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c index 6ef4cb4b84c..b5b9cf5c182 100644 --- a/drivers/misc/sgi-gru/gruprocfs.c +++ b/drivers/misc/sgi-gru/gruprocfs.c @@ -89,6 +89,7 @@ static int statistics_show(struct seq_file *s, void *p) printstat(s, tlb_dropin_fail_fmm); printstat(s, tlb_dropin_fail_no_exception); printstat(s, tlb_dropin_fail_no_exception_war); + printstat(s, tfh_stale_on_fault); printstat(s, mmu_invalidate_range); printstat(s, mmu_invalidate_page); printstat(s, mmu_clear_flush_young); diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h index 6dfb3e69411..246c63883eb 100644 --- a/drivers/misc/sgi-gru/grutables.h +++ b/drivers/misc/sgi-gru/grutables.h @@ -212,6 +212,7 @@ struct gru_stats_s { atomic_long_t tlb_dropin_fail_fmm; atomic_long_t tlb_dropin_fail_no_exception; atomic_long_t tlb_dropin_fail_no_exception_war; + atomic_long_t tfh_stale_on_fault; atomic_long_t mmu_invalidate_range; atomic_long_t mmu_invalidate_page; atomic_long_t mmu_clear_flush_young; |