linux/arch/x86/include/asm/uv
cpw@sgi.com ae90c232be x86, UV: Correct UV2 BAU destination timeout
Correct the UV2 broacast assist unit's destination timeout
period. And the activation status register in UV2 should be
tested for a destination timeout with a 4, not a 2.  The values
for Active versus Timeout were reversed.

This patch is critical for TLB shootdown on an Altix UV2 system
(i.e. the follow-on to the current Altix UV).

 Destination timeout period:
  The period is set in 4 bits of memory-mapped register MISC_CONTROL.
  The left bit toggles base period between 10us and 80us.
  The other 3 bits are the multiplier.
 Decimal 15, hex f, gives the maximum: 7 * 80us

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Link: http://lkml.kernel.org/r/20110621122243.117324443@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-06-21 14:50:34 +02:00
..
bios.h Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 11:00:55 -08:00
uv.h x86: Enable NMI on all cpus on UV 2010-02-27 12:34:21 +01:00
uv_bau.h x86, UV: Correct UV2 BAU destination timeout 2011-06-21 14:50:34 +02:00
uv_hub.h x86, UV: Add support for SGI UV2 hub chip 2011-05-25 14:20:13 +02:00
uv_irq.h x86, apic: Move SGI UV functionality out of generic IO-APIC code 2009-10-14 09:17:09 +02:00
uv_mmrs.h x86, UV: Clean up uv_mmrs.h 2011-05-30 11:08:48 +02:00