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Blackfin: workaround anomaly 05000283

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Make sure our interrupt entry code with exact hardware errors handles
anomaly 05000283 (infinite stall in system MMR kill) so we don't stall
while under load.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Robin Getz
2009-08-26 15:54:10 +00:00
committed by Mike Frysinger
parent 05d17dfaab
commit dedfd5d7f2
3 changed files with 31 additions and 36 deletions
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19
arch/blackfin/mach-common/interrupt.S
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@@ -119,14 +119,8 @@ __common_int_entry:
fp = 0;
#endif
#if ANOMALY_05000283 || ANOMALY_05000315
cc = r7 == r7;
p5.h = HI(CHIPID);
p5.l = LO(CHIPID);
if cc jump 1f;
r7.l = W[p5];
1:
#endif
ANOMALY_283_315_WORKAROUND(p5, r7)
r1 = sp;
SP += -12;
#ifdef CONFIG_IPIPE
@@ -158,14 +152,7 @@ ENTRY(_evt_ivhw)
fp = 0;
#endif
#if ANOMALY_05000283 || ANOMALY_05000315
cc = r7 == r7;
p5.h = HI(CHIPID);
p5.l = LO(CHIPID);
if cc jump 1f;
r7.l = W[p5];
1:
#endif
ANOMALY_283_315_WORKAROUND(p5, r7)
/* Handle all stacked hardware errors
* To make sure we don't hang forever, only do it 10 times