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-rw-r--r--arch/powerpc/platforms/cell/spu_base.c42
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c14
2 files changed, 37 insertions, 19 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 96b5f0f1c11e..78f905bc6a42 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -219,15 +219,25 @@ static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap); //XXX
static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr)
{
+ int ret;
+
pr_debug("%s, %lx, %lx\n", __func__, dsisr, ea);
- /* Handle kernel space hash faults immediately.
- User hash faults need to be deferred to process context. */
- if ((dsisr & MFC_DSISR_PTE_NOT_FOUND)
- && REGION_ID(ea) != USER_REGION_ID
- && hash_page(ea, _PAGE_PRESENT, 0x300) == 0) {
- spu_restart_dma(spu);
- return 0;
+ /*
+ * Handle kernel space hash faults immediately. User hash
+ * faults need to be deferred to process context.
+ */
+ if ((dsisr & MFC_DSISR_PTE_NOT_FOUND) &&
+ (REGION_ID(ea) != USER_REGION_ID)) {
+
+ spin_unlock(&spu->register_lock);
+ ret = hash_page(ea, _PAGE_PRESENT, 0x300);
+ spin_lock(&spu->register_lock);
+
+ if (!ret) {
+ spu_restart_dma(spu);
+ return 0;
+ }
}
spu->class_1_dar = ea;
@@ -325,14 +335,12 @@ spu_irq_class_0(int irq, void *data)
spu->class_0_pending |= stat;
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_dar = 0;
spu_int_stat_clear(spu, 0, stat);
+ spin_unlock(&spu->register_lock);
return IRQ_HANDLED;
}
@@ -355,13 +363,12 @@ spu_irq_class_1(int irq, void *data)
spu_mfc_dsisr_set(spu, 0ul);
spu_int_stat_clear(spu, 1, stat);
- if (stat & CLASS1_SEGMENT_FAULT_INTR)
- __spu_trap_data_seg(spu, dar);
-
- spin_unlock(&spu->register_lock);
pr_debug("%s: %lx %lx %lx %lx\n", __func__, mask, stat,
dar, dsisr);
+ if (stat & CLASS1_SEGMENT_FAULT_INTR)
+ __spu_trap_data_seg(spu, dar);
+
if (stat & CLASS1_STORAGE_FAULT_INTR)
__spu_trap_data_map(spu, dar, dsisr);
@@ -374,6 +381,8 @@ spu_irq_class_1(int irq, void *data)
spu->class_1_dsisr = 0;
spu->class_1_dar = 0;
+ spin_unlock(&spu->register_lock);
+
return stat ? IRQ_HANDLED : IRQ_NONE;
}
@@ -392,14 +401,12 @@ spu_irq_class_2(int irq, void *data)
mask = spu_int_mask_get(spu, 2);
/* ignore interrupts we're not waiting for */
stat &= mask;
-
/* mailbox interrupts are level triggered. mask them now before
* acknowledging */
if (stat & mailbox_intrs)
spu_int_mask_and(spu, 2, ~(stat & mailbox_intrs));
/* acknowledge all interrupts before the callbacks */
spu_int_stat_clear(spu, 2, stat);
- spin_unlock(&spu->register_lock);
pr_debug("class 2 interrupt %d, %lx, %lx\n", irq, stat, mask);
@@ -419,6 +426,9 @@ spu_irq_class_2(int irq, void *data)
spu->wbox_callback(spu);
spu->stats.class2_intr++;
+
+ spin_unlock(&spu->register_lock);
+
return stat ? IRQ_HANDLED : IRQ_NONE;
}
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 745dd51ec37f..cd725670b1b5 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -230,19 +230,23 @@ static void spu_bind_context(struct spu *spu, struct spu_context *ctx)
ctx->stats.slb_flt_base = spu->stats.slb_flt;
ctx->stats.class2_intr_base = spu->stats.class2_intr;
+ spu_associate_mm(spu, ctx->owner);
+
+ spin_lock_irq(&spu->register_lock);
spu->ctx = ctx;
spu->flags = 0;
ctx->spu = spu;
ctx->ops = &spu_hw_ops;
spu->pid = current->pid;
spu->tgid = current->tgid;
- spu_associate_mm(spu, ctx->owner);
spu->ibox_callback = spufs_ibox_callback;
spu->wbox_callback = spufs_wbox_callback;
spu->stop_callback = spufs_stop_callback;
spu->mfc_callback = spufs_mfc_callback;
- mb();
+ spin_unlock_irq(&spu->register_lock);
+
spu_unmap_mappings(ctx);
+
spu_switch_log_notify(spu, ctx, SWITCH_LOG_START, 0);
spu_restore(&ctx->csa, spu);
spu->timestamp = jiffies;
@@ -423,18 +427,22 @@ static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
spu_unmap_mappings(ctx);
spu_save(&ctx->csa, spu);
spu_switch_log_notify(spu, ctx, SWITCH_LOG_STOP, 0);
+
+ spin_lock_irq(&spu->register_lock);
spu->timestamp = jiffies;
ctx->state = SPU_STATE_SAVED;
spu->ibox_callback = NULL;
spu->wbox_callback = NULL;
spu->stop_callback = NULL;
spu->mfc_callback = NULL;
- spu_associate_mm(spu, NULL);
spu->pid = 0;
spu->tgid = 0;
ctx->ops = &spu_backing_ops;
spu->flags = 0;
spu->ctx = NULL;
+ spin_unlock_irq(&spu->register_lock);
+
+ spu_associate_mm(spu, NULL);
ctx->stats.slb_flt +=
(spu->stats.slb_flt - ctx->stats.slb_flt_base);