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authorRobin Getz <robin.getz@analog.com>2009-08-26 15:54:10 +0000
committerMike Frysinger <vapier@gentoo.org>2009-09-16 22:10:34 -0400
commitdedfd5d7f21b08d50ba8c0220778e119952e2f77 (patch)
tree2d6bf1d13dfe16679c126beed7f35a2f840d22bd /arch/blackfin/mach-common
parent05d17dfaab6671def3fcdcd95c39fd49924dbb3b (diff)
downloadop-kernel-dev-dedfd5d7f21b08d50ba8c0220778e119952e2f77.zip
op-kernel-dev-dedfd5d7f21b08d50ba8c0220778e119952e2f77.tar.gz
Blackfin: workaround anomaly 05000283
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>
Diffstat (limited to 'arch/blackfin/mach-common')
-rw-r--r--arch/blackfin/mach-common/entry.S18
-rw-r--r--arch/blackfin/mach-common/interrupt.S19
2 files changed, 5 insertions, 32 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index a9b15aa..01af24c 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -513,14 +513,7 @@ ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/
ssync;
#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)
#ifdef CONFIG_DEBUG_DOUBLEFAULT
/*
@@ -1134,14 +1127,7 @@ ENTRY(_early_trap)
SAVE_ALL_SYS
trace_buffer_stop(p0,r0);
-#if ANOMALY_05000283 || ANOMALY_05000315
- cc = r5 == r5;
- p4.h = HI(CHIPID);
- p4.l = LO(CHIPID);
- if cc jump 1f;
- r5.l = W[p4];
-1:
-#endif
+ ANOMALY_283_315_WORKAROUND(p4, r5)
/* Turn caches off, to ensure we don't get double exceptions */
diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S
index c754ff7..82d417e 100644
--- a/arch/blackfin/mach-common/interrupt.S
+++ b/arch/blackfin/mach-common/interrupt.S
@@ -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
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