| /* |
| * 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> |
| #include <asm/spu_csa.h> |
| |
| /* The magic number for our file system */ |
| enum { |
| SPUFS_MAGIC = 0x23c9b64e, |
| }; |
| |
| struct spu_context { |
| struct spu *spu; /* pointer to a physical SPU */ |
| struct spu_state csa; /* SPU context save area. */ |
| 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 |