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22#ifndef SPUFS_H
23#define SPUFS_H
24
25#include <linux/kref.h>
26#include <linux/mutex.h>
27#include <linux/spinlock.h>
28#include <linux/fs.h>
29#include <linux/cpumask.h>
30
31#include <asm/spu.h>
32#include <asm/spu_csa.h>
33#include <asm/spu_info.h>
34
35#define SPUFS_PS_MAP_SIZE 0x20000
36#define SPUFS_MFC_MAP_SIZE 0x1000
37#define SPUFS_CNTL_MAP_SIZE 0x1000
38#define SPUFS_SIGNAL_MAP_SIZE PAGE_SIZE
39#define SPUFS_MSS_MAP_SIZE 0x1000
40
41
42enum {
43 SPUFS_MAGIC = 0x23c9b64e,
44};
45
46struct spu_context_ops;
47struct spu_gang;
48
49
50enum {
51 SPU_SCHED_NOTIFY_ACTIVE,
52 SPU_SCHED_WAS_ACTIVE,
53 SPU_SCHED_SPU_RUN,
54};
55
56enum {
57 SWITCH_LOG_BUFSIZE = 4096,
58};
59
60enum {
61 SWITCH_LOG_START,
62 SWITCH_LOG_STOP,
63 SWITCH_LOG_EXIT,
64};
65
66struct switch_log {
67 wait_queue_head_t wait;
68 unsigned long head;
69 unsigned long tail;
70 struct switch_log_entry {
71 struct timespec tstamp;
72 s32 spu_id;
73 u32 type;
74 u32 val;
75 u64 timebase;
76 } log[];
77};
78
79struct spu_context {
80 struct spu *spu;
81 struct spu_state csa;
82 spinlock_t mmio_lock;
83 struct address_space *local_store;
84 struct address_space *mfc;
85 struct address_space *cntl;
86 struct address_space *signal1;
87 struct address_space *signal2;
88 struct address_space *mss;
89 struct address_space *psmap;
90 struct mutex mapping_lock;
91 u64 object_id;
92
93 enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
94 struct mutex state_mutex;
95 struct mutex run_mutex;
96
97 struct mm_struct *owner;
98
99 struct kref kref;
100 wait_queue_head_t ibox_wq;
101 wait_queue_head_t wbox_wq;
102 wait_queue_head_t stop_wq;
103 wait_queue_head_t mfc_wq;
104 wait_queue_head_t run_wq;
105 struct fasync_struct *ibox_fasync;
106 struct fasync_struct *wbox_fasync;
107 struct fasync_struct *mfc_fasync;
108 u32 tagwait;
109 struct spu_context_ops *ops;
110 struct work_struct reap_work;
111 unsigned long flags;
112 unsigned long event_return;
113
114 struct list_head gang_list;
115 struct spu_gang *gang;
116 struct kref *prof_priv_kref;
117 void ( * prof_priv_release) (struct kref *kref);
118
119
120 pid_t tid;
121
122
123 struct list_head rq;
124 unsigned int time_slice;
125 unsigned long sched_flags;
126 cpumask_t cpus_allowed;
127 int policy;
128 int prio;
129 int last_ran;
130
131
132 struct {
133
134 enum spu_utilization_state util_state;
135 unsigned long long tstamp;
136 unsigned long long times[SPU_UTIL_MAX];
137 unsigned long long vol_ctx_switch;
138 unsigned long long invol_ctx_switch;
139 unsigned long long min_flt;
140 unsigned long long maj_flt;
141 unsigned long long hash_flt;
142 unsigned long long slb_flt;
143 unsigned long long slb_flt_base;
144 unsigned long long class2_intr;
145 unsigned long long class2_intr_base;
146 unsigned long long libassist;
147 } stats;
148
149
150 struct switch_log *switch_log;
151
152 struct list_head aff_list;
153 int aff_head;
154 int aff_offset;
155};
156
157struct spu_gang {
158 struct list_head list;
159 struct mutex mutex;
160 struct kref kref;
161 int contexts;
162
163 struct spu_context *aff_ref_ctx;
164 struct list_head aff_list_head;
165 struct mutex aff_mutex;
166 int aff_flags;
167 struct spu *aff_ref_spu;
168 atomic_t aff_sched_count;
169};
170
171
172#define AFF_OFFSETS_SET 1
173#define AFF_MERGED 2
174
175struct mfc_dma_command {
176 int32_t pad;
177 uint32_t lsa;
178 uint64_t ea;
179 uint16_t size;
180 uint16_t tag;
181 uint16_t class;
182 uint16_t cmd;
183};
184
185
186
187struct spu_context_ops {
188 int (*mbox_read) (struct spu_context * ctx, u32 * data);
189 u32(*mbox_stat_read) (struct spu_context * ctx);
190 unsigned int (*mbox_stat_poll)(struct spu_context *ctx,
191 unsigned int events);
192 int (*ibox_read) (struct spu_context * ctx, u32 * data);
193 int (*wbox_write) (struct spu_context * ctx, u32 data);
194 u32(*signal1_read) (struct spu_context * ctx);
195 void (*signal1_write) (struct spu_context * ctx, u32 data);
196 u32(*signal2_read) (struct spu_context * ctx);
197 void (*signal2_write) (struct spu_context * ctx, u32 data);
198 void (*signal1_type_set) (struct spu_context * ctx, u64 val);
199 u64(*signal1_type_get) (struct spu_context * ctx);
200 void (*signal2_type_set) (struct spu_context * ctx, u64 val);
201 u64(*signal2_type_get) (struct spu_context * ctx);
202 u32(*npc_read) (struct spu_context * ctx);
203 void (*npc_write) (struct spu_context * ctx, u32 data);
204 u32(*status_read) (struct spu_context * ctx);
205 char*(*get_ls) (struct spu_context * ctx);
206 void (*privcntl_write) (struct spu_context *ctx, u64 data);
207 u32 (*runcntl_read) (struct spu_context * ctx);
208 void (*runcntl_write) (struct spu_context * ctx, u32 data);
209 void (*runcntl_stop) (struct spu_context * ctx);
210 void (*master_start) (struct spu_context * ctx);
211 void (*master_stop) (struct spu_context * ctx);
212 int (*set_mfc_query)(struct spu_context * ctx, u32 mask, u32 mode);
213 u32 (*read_mfc_tagstatus)(struct spu_context * ctx);
214 u32 (*get_mfc_free_elements)(struct spu_context *ctx);
215 int (*send_mfc_command)(struct spu_context * ctx,
216 struct mfc_dma_command * cmd);
217 void (*dma_info_read) (struct spu_context * ctx,
218 struct spu_dma_info * info);
219 void (*proxydma_info_read) (struct spu_context * ctx,
220 struct spu_proxydma_info * info);
221 void (*restart_dma)(struct spu_context *ctx);
222};
223
224extern struct spu_context_ops spu_hw_ops;
225extern struct spu_context_ops spu_backing_ops;
226
227struct spufs_inode_info {
228 struct spu_context *i_ctx;
229 struct spu_gang *i_gang;
230 struct inode vfs_inode;
231 int i_openers;
232};
233#define SPUFS_I(inode) \
234 container_of(inode, struct spufs_inode_info, vfs_inode)
235
236struct spufs_tree_descr {
237 const char *name;
238 const struct file_operations *ops;
239 umode_t mode;
240 size_t size;
241};
242
243extern const struct spufs_tree_descr spufs_dir_contents[];
244extern const struct spufs_tree_descr spufs_dir_nosched_contents[];
245extern const struct spufs_tree_descr spufs_dir_debug_contents[];
246
247
248extern struct spufs_calls spufs_calls;
249struct coredump_params;
250long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *status);
251long spufs_create(struct path *nd, struct dentry *dentry, unsigned int flags,
252 umode_t mode, struct file *filp);
253
254extern int spufs_coredump_extra_notes_size(void);
255extern int spufs_coredump_extra_notes_write(struct coredump_params *cprm);
256
257extern const struct file_operations spufs_context_fops;
258
259
260struct spu_gang *alloc_spu_gang(void);
261struct spu_gang *get_spu_gang(struct spu_gang *gang);
262int put_spu_gang(struct spu_gang *gang);
263void spu_gang_remove_ctx(struct spu_gang *gang, struct spu_context *ctx);
264void spu_gang_add_ctx(struct spu_gang *gang, struct spu_context *ctx);
265
266
267int spufs_handle_class1(struct spu_context *ctx);
268int spufs_handle_class0(struct spu_context *ctx);
269
270
271struct spu *affinity_check(struct spu_context *ctx);
272
273
274extern atomic_t nr_spu_contexts;
275static inline int __must_check spu_acquire(struct spu_context *ctx)
276{
277 return mutex_lock_interruptible(&ctx->state_mutex);
278}
279
280static inline void spu_release(struct spu_context *ctx)
281{
282 mutex_unlock(&ctx->state_mutex);
283}
284
285struct spu_context * alloc_spu_context(struct spu_gang *gang);
286void destroy_spu_context(struct kref *kref);
287struct spu_context * get_spu_context(struct spu_context *ctx);
288int put_spu_context(struct spu_context *ctx);
289void spu_unmap_mappings(struct spu_context *ctx);
290
291void spu_forget(struct spu_context *ctx);
292int __must_check spu_acquire_saved(struct spu_context *ctx);
293void spu_release_saved(struct spu_context *ctx);
294
295int spu_stopped(struct spu_context *ctx, u32 * stat);
296void spu_del_from_rq(struct spu_context *ctx);
297int spu_activate(struct spu_context *ctx, unsigned long flags);
298void spu_deactivate(struct spu_context *ctx);
299void spu_yield(struct spu_context *ctx);
300void spu_switch_notify(struct spu *spu, struct spu_context *ctx);
301void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
302 u32 type, u32 val);
303void spu_set_timeslice(struct spu_context *ctx);
304void spu_update_sched_info(struct spu_context *ctx);
305void __spu_update_sched_info(struct spu_context *ctx);
306int __init spu_sched_init(void);
307void spu_sched_exit(void);
308
309extern char *isolated_loader;
310
311
312
313
314
315
316
317
318
319
320
321#define spufs_wait(wq, condition) \
322({ \
323 int __ret = 0; \
324 DEFINE_WAIT(__wait); \
325 for (;;) { \
326 prepare_to_wait(&(wq), &__wait, TASK_INTERRUPTIBLE); \
327 if (condition) \
328 break; \
329 spu_release(ctx); \
330 if (signal_pending(current)) { \
331 __ret = -ERESTARTSYS; \
332 break; \
333 } \
334 schedule(); \
335 __ret = spu_acquire(ctx); \
336 if (__ret) \
337 break; \
338 } \
339 finish_wait(&(wq), &__wait); \
340 __ret; \
341})
342
343size_t spu_wbox_write(struct spu_context *ctx, u32 data);
344size_t spu_ibox_read(struct spu_context *ctx, u32 *data);
345
346
347void spufs_ibox_callback(struct spu *spu);
348void spufs_wbox_callback(struct spu *spu);
349void spufs_stop_callback(struct spu *spu, int irq);
350void spufs_mfc_callback(struct spu *spu);
351void spufs_dma_callback(struct spu *spu, int type);
352
353extern struct spu_coredump_calls spufs_coredump_calls;
354struct spufs_coredump_reader {
355 char *name;
356 ssize_t (*read)(struct spu_context *ctx,
357 char __user *buffer, size_t size, loff_t *pos);
358 u64 (*get)(struct spu_context *ctx);
359 size_t size;
360};
361extern const struct spufs_coredump_reader spufs_coredump_read[];
362extern int spufs_coredump_num_notes;
363
364extern int spu_init_csa(struct spu_state *csa);
365extern void spu_fini_csa(struct spu_state *csa);
366extern int spu_save(struct spu_state *prev, struct spu *spu);
367extern int spu_restore(struct spu_state *new, struct spu *spu);
368extern int spu_switch(struct spu_state *prev, struct spu_state *new,
369 struct spu *spu);
370extern int spu_alloc_lscsa(struct spu_state *csa);
371extern void spu_free_lscsa(struct spu_state *csa);
372
373extern void spuctx_switch_state(struct spu_context *ctx,
374 enum spu_utilization_state new_state);
375
376#endif
377