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