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path: root/arch/powerpc/platforms/cell/spufs/run.c
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Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/run.c')
-rw-r--r--arch/powerpc/platforms/cell/spufs/run.c84
1 files changed, 52 insertions, 32 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index cac69e11677..4ddf769a64e 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -11,7 +11,7 @@
#include "spufs.h"
/* interrupt-level stop callback function. */
-void spufs_stop_callback(struct spu *spu)
+void spufs_stop_callback(struct spu *spu, int irq)
{
struct spu_context *ctx = spu->ctx;
@@ -24,9 +24,18 @@ void spufs_stop_callback(struct spu *spu)
*/
if (ctx) {
/* Copy exception arguments into module specific structure */
- ctx->csa.class_0_pending = spu->class_0_pending;
- ctx->csa.dsisr = spu->dsisr;
- ctx->csa.dar = spu->dar;
+ switch(irq) {
+ case 0 :
+ ctx->csa.class_0_pending = spu->class_0_pending;
+ ctx->csa.class_0_dar = spu->class_0_dar;
+ break;
+ case 1 :
+ ctx->csa.class_1_dsisr = spu->class_1_dsisr;
+ ctx->csa.class_1_dar = spu->class_1_dar;
+ break;
+ case 2 :
+ break;
+ }
/* ensure that the exception status has hit memory before a
* thread waiting on the context's stop queue is woken */
@@ -34,11 +43,6 @@ void spufs_stop_callback(struct spu *spu)
wake_up_all(&ctx->stop_wq);
}
-
- /* Clear callback arguments from spu structure */
- spu->class_0_pending = 0;
- spu->dsisr = 0;
- spu->dar = 0;
}
int spu_stopped(struct spu_context *ctx, u32 *stat)
@@ -46,17 +50,25 @@ int spu_stopped(struct spu_context *ctx, u32 *stat)
u64 dsisr;
u32 stopped;
- *stat = ctx->ops->status_read(ctx);
+ stopped = SPU_STATUS_INVALID_INSTR | SPU_STATUS_SINGLE_STEP |
+ SPU_STATUS_STOPPED_BY_HALT | SPU_STATUS_STOPPED_BY_STOP;
- if (test_bit(SPU_SCHED_NOTIFY_ACTIVE, &ctx->sched_flags))
+top:
+ *stat = ctx->ops->status_read(ctx);
+ if (*stat & stopped) {
+ /*
+ * If the spu hasn't finished stopping, we need to
+ * re-read the register to get the stopped value.
+ */
+ if (*stat & SPU_STATUS_RUNNING)
+ goto top;
return 1;
+ }
- stopped = SPU_STATUS_INVALID_INSTR | SPU_STATUS_SINGLE_STEP |
- SPU_STATUS_STOPPED_BY_HALT | SPU_STATUS_STOPPED_BY_STOP;
- if (!(*stat & SPU_STATUS_RUNNING) && (*stat & stopped))
+ if (test_bit(SPU_SCHED_NOTIFY_ACTIVE, &ctx->sched_flags))
return 1;
- dsisr = ctx->csa.dsisr;
+ dsisr = ctx->csa.class_1_dsisr;
if (dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED))
return 1;
@@ -98,13 +110,16 @@ static int spu_setup_isolated(struct spu_context *ctx)
!= MFC_CNTL_PURGE_DMA_COMPLETE) {
if (time_after(jiffies, timeout)) {
printk(KERN_ERR "%s: timeout flushing MFC DMA queue\n",
- __FUNCTION__);
+ __func__);
ret = -EIO;
goto out;
}
cond_resched();
}
+ /* clear purge status */
+ out_be64(mfc_cntl, 0);
+
/* put the SPE in kernel mode to allow access to the loader */
sr1 = spu_mfc_sr1_get(ctx->spu);
sr1 &= ~MFC_STATE1_PROBLEM_STATE_MASK;
@@ -124,7 +139,7 @@ static int spu_setup_isolated(struct spu_context *ctx)
status_loading) {
if (time_after(jiffies, timeout)) {
printk(KERN_ERR "%s: timeout waiting for loader\n",
- __FUNCTION__);
+ __func__);
ret = -EIO;
goto out_drop_priv;
}
@@ -134,7 +149,7 @@ static int spu_setup_isolated(struct spu_context *ctx)
if (!(status & SPU_STATUS_RUNNING)) {
/* If isolated LOAD has failed: run SPU, we will get a stop-and
* signal later. */
- pr_debug("%s: isolated LOAD failed\n", __FUNCTION__);
+ pr_debug("%s: isolated LOAD failed\n", __func__);
ctx->ops->runcntl_write(ctx, SPU_RUNCNTL_RUNNABLE);
ret = -EACCES;
goto out_drop_priv;
@@ -142,7 +157,7 @@ static int spu_setup_isolated(struct spu_context *ctx)
if (!(status & SPU_STATUS_ISOLATED_STATE)) {
/* This isn't allowed by the CBEA, but check anyway */
- pr_debug("%s: SPU fell out of isolated mode?\n", __FUNCTION__);
+ pr_debug("%s: SPU fell out of isolated mode?\n", __func__);
ctx->ops->runcntl_write(ctx, SPU_RUNCNTL_STOP);
ret = -EINVAL;
goto out_drop_priv;
@@ -194,11 +209,6 @@ static int spu_run_init(struct spu_context *ctx, u32 *npc)
(SPU_RUNCNTL_RUNNABLE | SPU_RUNCNTL_ISOLATE);
if (runcntl == 0)
runcntl = SPU_RUNCNTL_RUNNABLE;
- }
-
- if (ctx->flags & SPU_CREATE_NOSCHED) {
- spuctx_switch_state(ctx, SPU_UTIL_USER);
- ctx->ops->runcntl_write(ctx, runcntl);
} else {
unsigned long privcntl;
@@ -207,9 +217,15 @@ static int spu_run_init(struct spu_context *ctx, u32 *npc)
else
privcntl = SPU_PRIVCNTL_MODE_NORMAL;
- ctx->ops->npc_write(ctx, *npc);
ctx->ops->privcntl_write(ctx, privcntl);
- ctx->ops->runcntl_write(ctx, runcntl);
+ ctx->ops->npc_write(ctx, *npc);
+ }
+
+ ctx->ops->runcntl_write(ctx, runcntl);
+
+ if (ctx->flags & SPU_CREATE_NOSCHED) {
+ spuctx_switch_state(ctx, SPU_UTIL_USER);
+ } else {
if (ctx->state == SPU_STATE_SAVED) {
ret = spu_activate(ctx, 0);
@@ -236,6 +252,7 @@ static int spu_run_fini(struct spu_context *ctx, u32 *npc,
spuctx_switch_state(ctx, SPU_UTIL_IDLE_LOADED);
clear_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags);
+ spu_switch_log_notify(NULL, ctx, SWITCH_LOG_EXIT, *status);
spu_release(ctx);
if (signal_pending(current))
@@ -282,7 +299,7 @@ static int spu_handle_restartsys(struct spu_context *ctx, long *spu_ret,
break;
default:
printk(KERN_WARNING "%s: unexpected return code %ld\n",
- __FUNCTION__, *spu_ret);
+ __func__, *spu_ret);
ret = 0;
}
return ret;
@@ -294,7 +311,7 @@ static int spu_process_callback(struct spu_context *ctx)
u32 ls_pointer, npc;
void __iomem *ls;
long spu_ret;
- int ret, ret2;
+ int ret;
/* get syscall block from local store */
npc = ctx->ops->npc_read(ctx) & ~3;
@@ -316,13 +333,15 @@ static int spu_process_callback(struct spu_context *ctx)
if (spu_ret <= -ERESTARTSYS) {
ret = spu_handle_restartsys(ctx, &spu_ret, &npc);
}
- ret2 = spu_acquire(ctx);
+ mutex_lock(&ctx->state_mutex);
if (ret == -ERESTARTSYS)
return ret;
- if (ret2)
- return -EINTR;
}
+ /* need to re-get the ls, as it may have changed when we released the
+ * spu */
+ ls = (void __iomem *)ctx->ops->get_ls(ctx);
+
/* write result, jump over indirect pointer */
memcpy_toio(ls + ls_pointer, &spu_ret, sizeof(spu_ret));
ctx->ops->npc_write(ctx, npc);
@@ -339,13 +358,14 @@ long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event)
if (mutex_lock_interruptible(&ctx->run_mutex))
return -ERESTARTSYS;
- spu_enable_spu(ctx);
ctx->event_return = 0;
ret = spu_acquire(ctx);
if (ret)
goto out_unlock;
+ spu_enable_spu(ctx);
+
spu_update_sched_info(ctx);
ret = spu_run_init(ctx, npc);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 18:45:46 +0000