#define SPUFS_H
#include <linux/kref.h>
-#include <linux/rwsem.h>
+#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/fs.h>
#include <asm/spu.h>
#include <asm/spu_csa.h>
+#include <asm/spu_info.h>
/* The magic number for our file system */
enum {
SPUFS_MAGIC = 0x23c9b64e,
};
+struct spu_context_ops;
+struct spu_gang;
+
+/* ctx->sched_flags */
+enum {
+ SPU_SCHED_WAKE = 0,
+};
+
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 address_space *local_store; /* local store mapping. */
+ struct address_space *mfc; /* 'mfc' area mappings. */
+ struct address_space *cntl; /* 'control' area mappings. */
+ struct address_space *signal1; /* 'signal1' area mappings. */
+ struct address_space *signal2; /* 'signal2' area mappings. */
+ struct address_space *mss; /* 'mss' area mappings. */
+ struct address_space *psmap; /* 'psmap' area mappings. */
+ u64 object_id; /* user space pointer for oprofile */
+
+ enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
+ struct mutex state_mutex;
+ struct semaphore run_sema;
+
+ struct mm_struct *owner;
+
+ struct kref kref;
+ wait_queue_head_t ibox_wq;
+ wait_queue_head_t wbox_wq;
+ wait_queue_head_t stop_wq;
+ wait_queue_head_t mfc_wq;
+ struct fasync_struct *ibox_fasync;
+ struct fasync_struct *wbox_fasync;
+ struct fasync_struct *mfc_fasync;
+ u32 tagwait;
+ struct spu_context_ops *ops;
+ struct work_struct reap_work;
+ unsigned long flags;
+ unsigned long event_return;
+ struct list_head gang_list;
+ struct spu_gang *gang;
+
+ /* scheduler fields */
+ struct list_head rq;
+ struct delayed_work sched_work;
+ unsigned long sched_flags;
+ unsigned long rt_priority;
+ int policy;
+ int prio;
+};
+
+struct spu_gang {
+ struct list_head list;
+ struct mutex mutex;
struct kref kref;
+ int contexts;
+};
+
+struct mfc_dma_command {
+ int32_t pad; /* reserved */
+ uint32_t lsa; /* local storage address */
+ uint64_t ea; /* effective address */
+ uint16_t size; /* transfer size */
+ uint16_t tag; /* command tag */
+ uint16_t class; /* class ID */
+ uint16_t cmd; /* command opcode */
+};
+
+
+/* SPU context query/set operations. */
+struct spu_context_ops {
+ int (*mbox_read) (struct spu_context * ctx, u32 * data);
+ u32(*mbox_stat_read) (struct spu_context * ctx);
+ unsigned int (*mbox_stat_poll)(struct spu_context *ctx,
+ unsigned int events);
+ int (*ibox_read) (struct spu_context * ctx, u32 * data);
+ int (*wbox_write) (struct spu_context * ctx, u32 data);
+ u32(*signal1_read) (struct spu_context * ctx);
+ void (*signal1_write) (struct spu_context * ctx, u32 data);
+ u32(*signal2_read) (struct spu_context * ctx);
+ void (*signal2_write) (struct spu_context * ctx, u32 data);
+ void (*signal1_type_set) (struct spu_context * ctx, u64 val);
+ u64(*signal1_type_get) (struct spu_context * ctx);
+ void (*signal2_type_set) (struct spu_context * ctx, u64 val);
+ u64(*signal2_type_get) (struct spu_context * ctx);
+ u32(*npc_read) (struct spu_context * ctx);
+ void (*npc_write) (struct spu_context * ctx, u32 data);
+ u32(*status_read) (struct spu_context * ctx);
+ char*(*get_ls) (struct spu_context * ctx);
+ u32 (*runcntl_read) (struct spu_context * ctx);
+ void (*runcntl_write) (struct spu_context * ctx, u32 data);
+ void (*master_start) (struct spu_context * ctx);
+ void (*master_stop) (struct spu_context * ctx);
+ int (*set_mfc_query)(struct spu_context * ctx, u32 mask, u32 mode);
+ u32 (*read_mfc_tagstatus)(struct spu_context * ctx);
+ u32 (*get_mfc_free_elements)(struct spu_context *ctx);
+ int (*send_mfc_command)(struct spu_context * ctx,
+ struct mfc_dma_command * cmd);
+ void (*dma_info_read) (struct spu_context * ctx,
+ struct spu_dma_info * info);
+ void (*proxydma_info_read) (struct spu_context * ctx,
+ struct spu_proxydma_info * info);
};
+extern struct spu_context_ops spu_hw_ops;
+extern struct spu_context_ops spu_backing_ops;
+
struct spufs_inode_info {
struct spu_context *i_ctx;
+ struct spu_gang *i_gang;
struct inode vfs_inode;
};
#define SPUFS_I(inode) \
container_of(inode, struct spufs_inode_info, vfs_inode)
extern struct tree_descr spufs_dir_contents[];
+extern struct tree_descr spufs_dir_nosched_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,
+long spufs_create(struct nameidata *nd,
unsigned int flags, mode_t mode);
+extern const struct file_operations spufs_context_fops;
+
+/* gang management */
+struct spu_gang *alloc_spu_gang(void);
+struct spu_gang *get_spu_gang(struct spu_gang *gang);
+int put_spu_gang(struct spu_gang *gang);
+void spu_gang_remove_ctx(struct spu_gang *gang, struct spu_context *ctx);
+void spu_gang_add_ctx(struct spu_gang *gang, struct spu_context *ctx);
/* context management */
-struct spu_context * alloc_spu_context(void);
+static inline void spu_acquire(struct spu_context *ctx)
+{
+ mutex_lock(&ctx->state_mutex);
+}
+
+static inline void spu_release(struct spu_context *ctx)
+{
+ mutex_unlock(&ctx->state_mutex);
+}
+
+struct spu_context * alloc_spu_context(struct spu_gang *gang);
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_unmap_mappings(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_forget(struct spu_context *ctx);
+int spu_acquire_runnable(struct spu_context *ctx, unsigned long flags);
void spu_acquire_saved(struct spu_context *ctx);
+int spu_acquire_exclusive(struct spu_context *ctx);
+enum {
+ SPU_ACTIVATE_NOWAKE = 1,
+};
+int spu_activate(struct spu_context *ctx, unsigned long flags);
+void spu_deactivate(struct spu_context *ctx);
+void spu_yield(struct spu_context *ctx);
+void spu_start_tick(struct spu_context *ctx);
+void spu_stop_tick(struct spu_context *ctx);
+void spu_sched_tick(struct work_struct *work);
+int __init spu_sched_init(void);
+void __exit spu_sched_exit(void);
+
+extern char *isolated_loader;
+
+/*
+ * 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);
+
+/* irq callback funcs. */
+void spufs_ibox_callback(struct spu *spu);
+void spufs_wbox_callback(struct spu *spu);
+void spufs_stop_callback(struct spu *spu);
+void spufs_mfc_callback(struct spu *spu);
+void spufs_dma_callback(struct spu *spu, int type);
+
+extern struct spu_coredump_calls spufs_coredump_calls;
+struct spufs_coredump_reader {
+ char *name;
+ ssize_t (*read)(struct spu_context *ctx,
+ char __user *buffer, size_t size, loff_t *pos);
+ u64 (*get)(void *data);
+ size_t size;
+};
+extern struct spufs_coredump_reader spufs_coredump_read[];
+extern int spufs_coredump_num_notes;
#endif
projects / linux-2.6 / blobdiff