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gru: update to rev 0.9 of gru spec

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Update GRU driver to the latest version of the GRU spec. This consists
of minor updates:
	- changes & additions to error status bits
	- new restriction on handling of TLB misses while in FMM mode
	- new field (not used by software) in TFH

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jack Steiner
2009-06-17 16:28:27 -07:00
committed by Linus Torvalds
parent eb5bd5e52a
commit 270952a907
6 changed files with 24 additions and 11 deletions
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19
drivers/misc/sgi-gru/gru_instructions.h
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@ -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 {