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authorLuke Browning <lukebrowning@us.ibm.com>2008-06-05 17:30:25 +0800
committerJeremy Kerr <jk@ozlabs.org>2008-06-16 14:35:00 +1000
commit1f64643aa5f5a17f1723f7ea0f17b7a3a8f632b3 (patch)
treefbefce858013d3b53e48b5d3aa1b640025743241 /arch/powerpc
parentd84050f48ebba73994b93ccf61cea2364dac8d75 (diff)
powerpc/spufs: remove class_0_dsisr from spu exception handling
According to the CBEA, the SPU dsisr is not updated for class 0 exceptions. spu_stopped() is testing the dsisr that was passed to it from the class 0 exception handler, so we return a false positive here. This patch cleans up the interrupt handler and erroneous tests in spu_stopped. It also removes the fields from the csa since it is not needed to process class 0 events. Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/cell/spu_base.c2
-rw-r--r--arch/powerpc/platforms/cell/spufs/run.c5
-rw-r--r--arch/powerpc/xmon/xmon.c1
3 files changed, 0 insertions, 8 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 70c660121ec..96b5f0f1c11 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -324,14 +324,12 @@ spu_irq_class_0(int irq, void *data)
stat = spu_int_stat_get(spu, 0) & mask;
spu->class_0_pending |= stat;
- spu->class_0_dsisr = spu_mfc_dsisr_get(spu);
spu->class_0_dar = spu_mfc_dar_get(spu);
spin_unlock(&spu->register_lock);
spu->stop_callback(spu, 0);
spu->class_0_pending = 0;
- spu->class_0_dsisr = 0;
spu->class_0_dar = 0;
spu_int_stat_clear(spu, 0, stat);
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index 0046bcfe495..f7edba6cb79 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -27,7 +27,6 @@ void spufs_stop_callback(struct spu *spu, int irq)
switch(irq) {
case 0 :
ctx->csa.class_0_pending = spu->class_0_pending;
- ctx->csa.class_0_dsisr = spu->class_0_dsisr;
ctx->csa.class_0_dar = spu->class_0_dar;
break;
case 1 :
@@ -69,10 +68,6 @@ top:
if (test_bit(SPU_SCHED_NOTIFY_ACTIVE, &ctx->sched_flags))
return 1;
- dsisr = ctx->csa.class_0_dsisr;
- if (dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED))
- return 1;
-
dsisr = ctx->csa.class_1_dsisr;
if (dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED))
return 1;
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 1702de9395e..bfcf70ee895 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -2844,7 +2844,6 @@ static void dump_spu_fields(struct spu *spu)
DUMP_FIELD(spu, "0x%lx", flags);
DUMP_FIELD(spu, "%d", class_0_pending);
DUMP_FIELD(spu, "0x%lx", class_0_dar);
- DUMP_FIELD(spu, "0x%lx", class_0_dsisr);
DUMP_FIELD(spu, "0x%lx", class_1_dar);
DUMP_FIELD(spu, "0x%lx", class_1_dsisr);
DUMP_FIELD(spu, "0x%lx", irqs[0]);