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-rw-r--r--arch/powerpc/platforms/cell/spufs/Makefile2
-rw-r--r--arch/powerpc/platforms/cell/spufs/file.c152
-rw-r--r--arch/powerpc/platforms/cell/spufs/run.c131
-rw-r--r--arch/powerpc/platforms/cell/spufs/spufs.h28
4 files changed, 160 insertions, 153 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/Makefile b/arch/powerpc/platforms/cell/spufs/Makefile
index 9bfaba8791e3..a7cddf40e3d9 100644
--- a/arch/powerpc/platforms/cell/spufs/Makefile
+++ b/arch/powerpc/platforms/cell/spufs/Makefile
@@ -1,6 +1,6 @@
obj-$(CONFIG_SPU_FS) += spufs.o
spufs-y += inode.o file.o context.o switch.o syscalls.o
-spufs-y += sched.o backing_ops.o hw_ops.o
+spufs-y += sched.o backing_ops.o hw_ops.o run.o
# Rules to build switch.o with the help of SPU tool chain
SPU_CROSS := spu-
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index e63426822fd5..dfa649c9b956 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -304,34 +304,6 @@ static struct file_operations spufs_mbox_stat_fops = {
.read = spufs_mbox_stat_read,
};
-/*
- * spufs_wait
- * Same as wait_event_interruptible(), except that here
- * we need to call spu_release(ctx) before sleeping, and
- * then spu_acquire(ctx) when awoken.
- */
-
-#define spufs_wait(wq, condition) \
-({ \
- int __ret = 0; \
- DEFINE_WAIT(__wait); \
- for (;;) { \
- prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \
- if (condition) \
- break; \
- if (!signal_pending(current)) { \
- spu_release(ctx); \
- schedule(); \
- spu_acquire(ctx); \
- continue; \
- } \
- __ret = -ERESTARTSYS; \
- break; \
- } \
- finish_wait(&(wq), &__wait); \
- __ret; \
-})
-
/* low-level ibox access function */
size_t spu_ibox_read(struct spu_context *ctx, u32 *data)
{
@@ -529,130 +501,6 @@ static struct file_operations spufs_wbox_stat_fops = {
.read = spufs_wbox_stat_read,
};
-/* interrupt-level stop callback function. */
-void spufs_stop_callback(struct spu *spu)
-{
- struct spu_context *ctx = spu->ctx;
-
- wake_up_all(&ctx->stop_wq);
-}
-
-static inline int spu_stopped(struct spu_context *ctx, u32 * stat)
-{
- struct spu *spu;
- u64 pte_fault;
-
- *stat = ctx->ops->status_read(ctx);
- if (ctx->state != SPU_STATE_RUNNABLE)
- return 1;
- spu = ctx->spu;
- pte_fault = spu->dsisr &
- (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED);
- return (!(*stat & 0x1) || pte_fault || spu->class_0_pending) ? 1 : 0;
-}
-
-static inline int spu_run_init(struct spu_context *ctx, u32 * npc,
- u32 * status)
-{
- int ret;
-
- if ((ret = spu_acquire_runnable(ctx)) != 0)
- return ret;
- ctx->ops->npc_write(ctx, *npc);
- ctx->ops->runcntl_write(ctx, SPU_RUNCNTL_RUNNABLE);
- return 0;
-}
-
-static inline int spu_run_fini(struct spu_context *ctx, u32 * npc,
- u32 * status)
-{
- int ret = 0;
-
- *status = ctx->ops->status_read(ctx);
- *npc = ctx->ops->npc_read(ctx);
- spu_release(ctx);
-
- if (signal_pending(current))
- ret = -ERESTARTSYS;
- if (unlikely(current->ptrace & PT_PTRACED)) {
- if ((*status & SPU_STATUS_STOPPED_BY_STOP)
- && (*status >> SPU_STOP_STATUS_SHIFT) == 0x3fff) {
- force_sig(SIGTRAP, current);
- ret = -ERESTARTSYS;
- }
- }
- return ret;
-}
-
-static inline int spu_reacquire_runnable(struct spu_context *ctx, u32 *npc,
- u32 *status)
-{
- int ret;
-
- if ((ret = spu_run_fini(ctx, npc, status)) != 0)
- return ret;
- if (*status & (SPU_STATUS_STOPPED_BY_STOP |
- SPU_STATUS_STOPPED_BY_HALT)) {
- return *status;
- }
- if ((ret = spu_run_init(ctx, npc, status)) != 0)
- return ret;
- return 0;
-}
-
-static inline int spu_process_events(struct spu_context *ctx)
-{
- struct spu *spu = ctx->spu;
- u64 pte_fault = MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED;
- int ret = 0;
-
- if (spu->dsisr & pte_fault)
- ret = spu_irq_class_1_bottom(spu);
- if (spu->class_0_pending)
- ret = spu_irq_class_0_bottom(spu);
- if (!ret && signal_pending(current))
- ret = -ERESTARTSYS;
- return ret;
-}
-
-long spufs_run_spu(struct file *file, struct spu_context *ctx,
- u32 * npc, u32 * status)
-{
- int ret;
-
- if (down_interruptible(&ctx->run_sema))
- return -ERESTARTSYS;
-
- ret = spu_run_init(ctx, npc, status);
- if (ret)
- goto out;
-
- do {
- ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, status));
- if (unlikely(ret))
- break;
- if (unlikely(ctx->state != SPU_STATE_RUNNABLE)) {
- ret = spu_reacquire_runnable(ctx, npc, status);
- if (ret)
- goto out;
- continue;
- }
- ret = spu_process_events(ctx);
-
- } while (!ret && !(*status & (SPU_STATUS_STOPPED_BY_STOP |
- SPU_STATUS_STOPPED_BY_HALT)));
-
- ctx->ops->runcntl_stop(ctx);
- ret = spu_run_fini(ctx, npc, status);
- if (!ret)
- ret = *status;
- spu_yield(ctx);
-
-out:
- up(&ctx->run_sema);
- return ret;
-}
-
static ssize_t spufs_signal1_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
new file mode 100644
index 000000000000..18ea8866c61a
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -0,0 +1,131 @@
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+
+#include <asm/spu.h>
+
+#include "spufs.h"
+
+/* interrupt-level stop callback function. */
+void spufs_stop_callback(struct spu *spu)
+{
+ struct spu_context *ctx = spu->ctx;
+
+ wake_up_all(&ctx->stop_wq);
+}
+
+static inline int spu_stopped(struct spu_context *ctx, u32 * stat)
+{
+ struct spu *spu;
+ u64 pte_fault;
+
+ *stat = ctx->ops->status_read(ctx);
+ if (ctx->state != SPU_STATE_RUNNABLE)
+ return 1;
+ spu = ctx->spu;
+ pte_fault = spu->dsisr &
+ (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED);
+ return (!(*stat & 0x1) || pte_fault || spu->class_0_pending) ? 1 : 0;
+}
+
+static inline int spu_run_init(struct spu_context *ctx, u32 * npc,
+ u32 * status)
+{
+ int ret;
+
+ if ((ret = spu_acquire_runnable(ctx)) != 0)
+ return ret;
+ ctx->ops->npc_write(ctx, *npc);
+ ctx->ops->runcntl_write(ctx, SPU_RUNCNTL_RUNNABLE);
+ return 0;
+}
+
+static inline int spu_run_fini(struct spu_context *ctx, u32 * npc,
+ u32 * status)
+{
+ int ret = 0;
+
+ *status = ctx->ops->status_read(ctx);
+ *npc = ctx->ops->npc_read(ctx);
+ spu_release(ctx);
+
+ if (signal_pending(current))
+ ret = -ERESTARTSYS;
+ if (unlikely(current->ptrace & PT_PTRACED)) {
+ if ((*status & SPU_STATUS_STOPPED_BY_STOP)
+ && (*status >> SPU_STOP_STATUS_SHIFT) == 0x3fff) {
+ force_sig(SIGTRAP, current);
+ ret = -ERESTARTSYS;
+ }
+ }
+ return ret;
+}
+
+static inline int spu_reacquire_runnable(struct spu_context *ctx, u32 *npc,
+ u32 *status)
+{
+ int ret;
+
+ if ((ret = spu_run_fini(ctx, npc, status)) != 0)
+ return ret;
+ if (*status & (SPU_STATUS_STOPPED_BY_STOP |
+ SPU_STATUS_STOPPED_BY_HALT)) {
+ return *status;
+ }
+ if ((ret = spu_run_init(ctx, npc, status)) != 0)
+ return ret;
+ return 0;
+}
+
+static inline int spu_process_events(struct spu_context *ctx)
+{
+ struct spu *spu = ctx->spu;
+ u64 pte_fault = MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED;
+ int ret = 0;
+
+ if (spu->dsisr & pte_fault)
+ ret = spu_irq_class_1_bottom(spu);
+ if (spu->class_0_pending)
+ ret = spu_irq_class_0_bottom(spu);
+ if (!ret && signal_pending(current))
+ ret = -ERESTARTSYS;
+ return ret;
+}
+
+long spufs_run_spu(struct file *file, struct spu_context *ctx,
+ u32 * npc, u32 * status)
+{
+ int ret;
+
+ if (down_interruptible(&ctx->run_sema))
+ return -ERESTARTSYS;
+
+ ret = spu_run_init(ctx, npc, status);
+ if (ret)
+ goto out;
+
+ do {
+ ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, status));
+ if (unlikely(ret))
+ break;
+ if (unlikely(ctx->state != SPU_STATE_RUNNABLE)) {
+ ret = spu_reacquire_runnable(ctx, npc, status);
+ if (ret)
+ goto out;
+ continue;
+ }
+ ret = spu_process_events(ctx);
+
+ } while (!ret && !(*status & (SPU_STATUS_STOPPED_BY_STOP |
+ SPU_STATUS_STOPPED_BY_HALT)));
+
+ ctx->ops->runcntl_stop(ctx);
+ ret = spu_run_fini(ctx, npc, status);
+ if (!ret)
+ ret = *status;
+ spu_yield(ctx);
+
+out:
+ up(&ctx->run_sema);
+ return ret;
+}
+
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 48961ac584a1..c715ed0c4014 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -124,6 +124,34 @@ void spu_yield(struct spu_context *ctx);
int __init spu_sched_init(void);
void __exit spu_sched_exit(void);
+/*
+ * spufs_wait
+ * Same as wait_event_interruptible(), except that here
+ * we need to call spu_release(ctx) before sleeping, and
+ * then spu_acquire(ctx) when awoken.
+ */
+
+#define spufs_wait(wq, condition) \
+({ \
+ int __ret = 0; \
+ DEFINE_WAIT(__wait); \
+ for (;;) { \
+ prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \
+ if (condition) \
+ break; \
+ if (!signal_pending(current)) { \
+ spu_release(ctx); \
+ schedule(); \
+ spu_acquire(ctx); \
+ continue; \
+ } \
+ __ret = -ERESTARTSYS; \
+ break; \
+ } \
+ finish_wait(&(wq), &__wait); \
+ __ret; \
+})
+
size_t spu_wbox_write(struct spu_context *ctx, u32 data);
size_t spu_ibox_read(struct spu_context *ctx, u32 *data);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.