diff options
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/spufs.h')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/spufs.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h new file mode 100644 index 00000000000000..b37fe797ea1ce4 --- /dev/null +++ b/arch/powerpc/platforms/cell/spufs/spufs.h @@ -0,0 +1,71 @@ +/* + * SPU file system + * + * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 + * + * Author: Arnd Bergmann <arndb@de.ibm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#ifndef SPUFS_H +#define SPUFS_H + +#include <linux/kref.h> +#include <linux/rwsem.h> +#include <linux/spinlock.h> +#include <linux/fs.h> + +#include <asm/spu.h> + +/* The magic number for our file system */ +enum { + SPUFS_MAGIC = 0x23c9b64e, +}; + +struct spu_context { + struct spu *spu; /* pointer to a physical SPU */ + struct rw_semaphore backing_sema; /* protects the above */ + spinlock_t mmio_lock; /* protects mmio access */ + + struct kref kref; +}; + +struct spufs_inode_info { + struct spu_context *i_ctx; + struct inode vfs_inode; +}; +#define SPUFS_I(inode) \ + container_of(inode, struct spufs_inode_info, vfs_inode) + +extern struct tree_descr spufs_dir_contents[]; + +/* system call implementation */ +long spufs_run_spu(struct file *file, + struct spu_context *ctx, u32 *npc, u32 *status); +long spufs_create_thread(struct nameidata *nd, const char *name, + unsigned int flags, mode_t mode); + +/* context management */ +struct spu_context * alloc_spu_context(void); +void destroy_spu_context(struct kref *kref); +struct spu_context * get_spu_context(struct spu_context *ctx); +int put_spu_context(struct spu_context *ctx); + +void spu_acquire(struct spu_context *ctx); +void spu_release(struct spu_context *ctx); +void spu_acquire_runnable(struct spu_context *ctx); +void spu_acquire_saved(struct spu_context *ctx); + +#endif |