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x86: UV BAU messaging timeouts

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This patch replaces a 'nop' uv_enable_timeouts() in the
UV TLB shootdown code. (somehow, long ago that function got
eviscerated)

If any cpu in the destination node does not get interrupted by the
message and post completion in a reasonable time the hardware
should respond to the sender with an error.  This function
enables such timeouts.

Tested on the UV hardware simulator.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
LKML-Reference: <E1LpjXU-00007e-Qh@eag09.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Cliff Wickman
2009-04-03 08:34:32 -05:00
committed by Ingo Molnar
parent 9674f35b1e
commit c4c4688f72
2 changed files with 50 additions and 11 deletions
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5
arch/x86/include/asm/uv/uv_mmrs.h
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@@ -17,6 +17,11 @@
/* ========================================================================= */
/* UVH_BAU_DATA_CONFIG */
/* ========================================================================= */
#define UVH_LB_BAU_MISC_CONTROL 0x320170UL
#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
/* 1011 timebase 7 (168millisec) * 3 ticks -> 500ms */
#define UVH_BAU_DATA_CONFIG 0x61680UL
#define UVH_BAU_DATA_CONFIG_32 0x0438