diff options
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/file.c')
-rw-r--r-- | arch/powerpc/platforms/cell/spufs/file.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c index e63426822fd..dfa649c9b95 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) { |