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| author | Cliff Wickman <cpw@sgi.com> | 2010-06-02 16:22:01 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-06-08 21:13:44 +0200 |
| commit | 12a6611fa16e9c6d2f844fe2175d219c6e9bd95d (patch) | |
| tree | 2dde05add2678c0e35792cd8f8bc32380ab8289a /arch/x86/include | |
| parent | 3975d16760d4be7402d1067c548c30c427971331 (diff) | |
| download | blackbird-op-linux-12a6611fa16e9c6d2f844fe2175d219c6e9bd95d.tar.gz blackbird-op-linux-12a6611fa16e9c6d2f844fe2175d219c6e9bd95d.zip | |
x86, UV: Calculate BAU destination timeout
Calculate the Broadcast Assist Unit's destination timeout period from the
values in the relevant MMR's.
Store it in each cpu's per-cpu BAU structure so that a destination
timeout can be differentiated from a 'plugged' situation in which all
software ack resources are already allocated and a timeout is pending.
That case returns an immediate destination error.
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: gregkh@suse.de
LKML-Reference: <E1OJvNx-0004Zq-RK@eag09.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/uv/uv_bau.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/include/asm/uv/uv_bau.h b/arch/x86/include/asm/uv/uv_bau.h index aa558ac0306e..458e04c626a2 100644 --- a/arch/x86/include/asm/uv/uv_bau.h +++ b/arch/x86/include/asm/uv/uv_bau.h @@ -49,6 +49,18 @@ #define UV_ENABLE_INTD_SOFT_ACK_MODE_SHIFT 15 #define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHIFT 16 #define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD 0x000000000bUL +/* [19:16] SOFT_ACK timeout period 19: 1 is urgency 7 17:16 1 is multiplier */ +#define BAU_MISC_CONTROL_MULT_MASK 3 + +#define UVH_AGING_PRESCALE_SEL 0x000000b000UL +/* [30:28] URGENCY_7 an index into a table of times */ +#define BAU_URGENCY_7_SHIFT 28 +#define BAU_URGENCY_7_MASK 7 + +#define UVH_TRANSACTION_TIMEOUT 0x000000b200UL +/* [45:40] BAU - BAU transaction timeout select - a multiplier */ +#define BAU_TRANS_SHIFT 40 +#define BAU_TRANS_MASK 0x3f /* * bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1 |
