#define SPUFS_H
#include <linux/kref.h>
-#include <linux/rwsem.h>
+#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/fs.h>
+#include <linux/cpumask.h>
#include <asm/spu.h>
#include <asm/spu_csa.h>
+#include <asm/spu_info.h>
+
+#define SPUFS_PS_MAP_SIZE 0x20000
+#define SPUFS_MFC_MAP_SIZE 0x1000
+#define SPUFS_CNTL_MAP_SIZE 0x1000
+#define SPUFS_CNTL_MAP_SIZE 0x1000
+#define SPUFS_SIGNAL_MAP_SIZE PAGE_SIZE
+#define SPUFS_MSS_MAP_SIZE 0x1000
/* The magic number for our file system */
enum {
};
struct spu_context_ops;
+struct spu_gang;
+
+/* ctx->sched_flags */
+enum {
+ SPU_SCHED_NOTIFY_ACTIVE,
+ SPU_SCHED_WAS_ACTIVE, /* was active upon spu_acquire_saved() */
+ SPU_SCHED_SPU_RUN, /* context is within spu_run */
+};
-#define SPU_CONTEXT_PREEMPT_nr 0UL
-#define SPU_CONTEXT_PREEMPT (1UL << SPU_CONTEXT_PREEMPT_nr)
+enum {
+ SWITCH_LOG_BUFSIZE = 4096,
+};
+
+enum {
+ SWITCH_LOG_START,
+ SWITCH_LOG_STOP,
+ SWITCH_LOG_EXIT,
+};
+
+struct switch_log {
+ wait_queue_head_t wait;
+ unsigned long head;
+ unsigned long tail;
+ struct switch_log_entry {
+ struct timespec tstamp;
+ s32 spu_id;
+ u32 type;
+ u32 val;
+ u64 timebase;
+ } log[];
+};
struct spu_context {
struct spu *spu; /* pointer to a physical SPU */
struct spu_state csa; /* SPU context save area. */
spinlock_t mmio_lock; /* protects mmio access */
- struct address_space *local_store;/* local store backing store */
+ 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. */
+ struct mutex mapping_lock;
+ u64 object_id; /* user space pointer for oprofile */
enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
- struct rw_semaphore state_sema;
- struct semaphore run_sema;
+ struct mutex state_mutex;
+ struct mutex run_mutex;
struct mm_struct *owner;
wait_queue_head_t ibox_wq;
wait_queue_head_t wbox_wq;
wait_queue_head_t stop_wq;
+ wait_queue_head_t mfc_wq;
+ wait_queue_head_t run_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;
- u64 flags;
+ unsigned long flags;
+ unsigned long event_return;
+
+ struct list_head gang_list;
+ struct spu_gang *gang;
+ struct kref *prof_priv_kref;
+ void ( * prof_priv_release) (struct kref *kref);
+
+ /* owner thread */
+ pid_t tid;
+
+ /* scheduler fields */
+ struct list_head rq;
+ unsigned int time_slice;
+ unsigned long sched_flags;
+ cpumask_t cpus_allowed;
+ int policy;
+ int prio;
+ int last_ran;
+
+ /* statistics */
+ struct {
+ /* updates protected by ctx->state_mutex */
+ enum spu_utilization_state util_state;
+ unsigned long long tstamp; /* time of last state switch */
+ unsigned long long times[SPU_UTIL_MAX];
+ unsigned long long vol_ctx_switch;
+ unsigned long long invol_ctx_switch;
+ unsigned long long min_flt;
+ unsigned long long maj_flt;
+ unsigned long long hash_flt;
+ unsigned long long slb_flt;
+ unsigned long long slb_flt_base; /* # at last ctx switch */
+ unsigned long long class2_intr;
+ unsigned long long class2_intr_base; /* # at last ctx switch */
+ unsigned long long libassist;
+ } stats;
+
+ /* context switch log */
+ struct switch_log *switch_log;
+
+ struct list_head aff_list;
+ int aff_head;
+ int aff_offset;
+};
+
+struct spu_gang {
+ struct list_head list;
+ struct mutex mutex;
+ struct kref kref;
+ int contexts;
+
+ struct spu_context *aff_ref_ctx;
+ struct list_head aff_list_head;
+ struct mutex aff_mutex;
+ int aff_flags;
+ struct spu *aff_ref_spu;
+ atomic_t aff_sched_count;
+};
+
+/* Flag bits for spu_gang aff_flags */
+#define AFF_OFFSETS_SET 1
+#define AFF_MERGED 2
+
+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);
void (*npc_write) (struct spu_context * ctx, u32 data);
u32(*status_read) (struct spu_context * ctx);
char*(*get_ls) (struct spu_context * ctx);
+ void (*privcntl_write) (struct spu_context *ctx, u64 data);
+ u32 (*runcntl_read) (struct spu_context * ctx);
void (*runcntl_write) (struct spu_context * ctx, u32 data);
void (*runcntl_stop) (struct spu_context * ctx);
+ 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);
+ void (*restart_dma)(struct spu_context *ctx);
};
extern struct spu_context_ops spu_hw_ops;
struct spufs_inode_info {
struct spu_context *i_ctx;
+ struct spu_gang *i_gang;
struct inode vfs_inode;
+ int i_openers;
};
#define SPUFS_I(inode) \
container_of(inode, struct spufs_inode_info, vfs_inode)
-extern struct tree_descr spufs_dir_contents[];
+struct spufs_tree_descr {
+ const char *name;
+ const struct file_operations *ops;
+ int mode;
+ size_t size;
+};
+
+extern const struct spufs_tree_descr spufs_dir_contents[];
+extern const struct spufs_tree_descr spufs_dir_nosched_contents[];
+extern const struct spufs_tree_descr spufs_dir_debug_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);
-extern struct file_operations spufs_context_fops;
+extern struct spufs_calls spufs_calls;
+long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *status);
+long spufs_create(struct nameidata *nd, unsigned int flags,
+ mode_t mode, struct file *filp);
+/* ELF coredump callbacks for writing SPU ELF notes */
+extern int spufs_coredump_extra_notes_size(void);
+extern int spufs_coredump_extra_notes_write(struct file *file, loff_t *foffset);
+
+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);
+
+/* fault handling */
+int spufs_handle_class1(struct spu_context *ctx);
+int spufs_handle_class0(struct spu_context *ctx);
+
+/* affinity */
+struct spu *affinity_check(struct spu_context *ctx);
/* context management */
-struct spu_context * alloc_spu_context(struct address_space *local_store);
+extern atomic_t nr_spu_contexts;
+static inline int __must_check spu_acquire(struct spu_context *ctx)
+{
+ return mutex_lock_interruptible(&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_forget(struct spu_context *ctx);
-void spu_acquire(struct spu_context *ctx);
-void spu_release(struct spu_context *ctx);
-int spu_acquire_runnable(struct spu_context *ctx);
-void spu_acquire_saved(struct spu_context *ctx);
+int __must_check spu_acquire_saved(struct spu_context *ctx);
+void spu_release_saved(struct spu_context *ctx);
-int spu_activate(struct spu_context *ctx, u64 flags);
+int spu_stopped(struct spu_context *ctx, u32 * stat);
+void spu_del_from_rq(struct spu_context *ctx);
+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_switch_notify(struct spu *spu, struct spu_context *ctx);
+void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
+ u32 type, u32 val);
+void spu_set_timeslice(struct spu_context *ctx);
+void spu_update_sched_info(struct spu_context *ctx);
+void __spu_update_sched_info(struct spu_context *ctx);
int __init spu_sched_init(void);
-void __exit spu_sched_exit(void);
+void 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.
+ *
+ * Returns with state_mutex re-acquired when successful or
+ * with -ERESTARTSYS and the state_mutex dropped when interrupted.
+ */
+
+#define spufs_wait(wq, condition) \
+({ \
+ int __ret = 0; \
+ DEFINE_WAIT(__wait); \
+ for (;;) { \
+ prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \
+ if (condition) \
+ break; \
+ spu_release(ctx); \
+ if (signal_pending(current)) { \
+ __ret = -ERESTARTSYS; \
+ break; \
+ } \
+ schedule(); \
+ __ret = spu_acquire(ctx); \
+ if (__ret) \
+ 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_stop_callback(struct spu *spu, int irq);
+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)(struct spu_context *ctx);
+ size_t size;
+};
+extern const struct spufs_coredump_reader spufs_coredump_read[];
+extern int spufs_coredump_num_notes;
+
+extern int spu_init_csa(struct spu_state *csa);
+extern void spu_fini_csa(struct spu_state *csa);
+extern int spu_save(struct spu_state *prev, struct spu *spu);
+extern int spu_restore(struct spu_state *new, struct spu *spu);
+extern int spu_switch(struct spu_state *prev, struct spu_state *new,
+ struct spu *spu);
+extern int spu_alloc_lscsa(struct spu_state *csa);
+extern void spu_free_lscsa(struct spu_state *csa);
+
+extern void spuctx_switch_state(struct spu_context *ctx,
+ enum spu_utilization_state new_state);
+
+#define spu_context_trace(name, ctx, spu) \
+ trace_mark(name, "ctx %p spu %p", ctx, spu);
+#define spu_context_nospu_trace(name, ctx) \
+ trace_mark(name, "ctx %p", ctx);
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff