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8
9
10#undef DEBUG
11
12#include <linux/fs.h>
13#include <linux/ioctl.h>
14#include <linux/export.h>
15#include <linux/pagemap.h>
16#include <linux/poll.h>
17#include <linux/ptrace.h>
18#include <linux/seq_file.h>
19#include <linux/slab.h>
20
21#include <asm/io.h>
22#include <asm/time.h>
23#include <asm/spu.h>
24#include <asm/spu_info.h>
25#include <linux/uaccess.h>
26
27#include "spufs.h"
28#include "sputrace.h"
29
30#define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000)
31
32
33struct spufs_attr {
34 int (*get)(void *, u64 *);
35 int (*set)(void *, u64);
36 char get_buf[24];
37 char set_buf[24];
38 void *data;
39 const char *fmt;
40 struct mutex mutex;
41};
42
43static int spufs_attr_open(struct inode *inode, struct file *file,
44 int (*get)(void *, u64 *), int (*set)(void *, u64),
45 const char *fmt)
46{
47 struct spufs_attr *attr;
48
49 attr = kmalloc(sizeof(*attr), GFP_KERNEL);
50 if (!attr)
51 return -ENOMEM;
52
53 attr->get = get;
54 attr->set = set;
55 attr->data = inode->i_private;
56 attr->fmt = fmt;
57 mutex_init(&attr->mutex);
58 file->private_data = attr;
59
60 return nonseekable_open(inode, file);
61}
62
63static int spufs_attr_release(struct inode *inode, struct file *file)
64{
65 kfree(file->private_data);
66 return 0;
67}
68
69static ssize_t spufs_attr_read(struct file *file, char __user *buf,
70 size_t len, loff_t *ppos)
71{
72 struct spufs_attr *attr;
73 size_t size;
74 ssize_t ret;
75
76 attr = file->private_data;
77 if (!attr->get)
78 return -EACCES;
79
80 ret = mutex_lock_interruptible(&attr->mutex);
81 if (ret)
82 return ret;
83
84 if (*ppos) {
85 size = strlen(attr->get_buf);
86 } else {
87 u64 val;
88 ret = attr->get(attr->data, &val);
89 if (ret)
90 goto out;
91
92 size = scnprintf(attr->get_buf, sizeof(attr->get_buf),
93 attr->fmt, (unsigned long long)val);
94 }
95
96 ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size);
97out:
98 mutex_unlock(&attr->mutex);
99 return ret;
100}
101
102static ssize_t spufs_attr_write(struct file *file, const char __user *buf,
103 size_t len, loff_t *ppos)
104{
105 struct spufs_attr *attr;
106 u64 val;
107 size_t size;
108 ssize_t ret;
109
110 attr = file->private_data;
111 if (!attr->set)
112 return -EACCES;
113
114 ret = mutex_lock_interruptible(&attr->mutex);
115 if (ret)
116 return ret;
117
118 ret = -EFAULT;
119 size = min(sizeof(attr->set_buf) - 1, len);
120 if (copy_from_user(attr->set_buf, buf, size))
121 goto out;
122
123 ret = len;
124 attr->set_buf[size] = '\0';
125 val = simple_strtol(attr->set_buf, NULL, 0);
126 attr->set(attr->data, val);
127out:
128 mutex_unlock(&attr->mutex);
129 return ret;
130}
131
132#define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \
133static int __fops ## _open(struct inode *inode, struct file *file) \
134{ \
135 __simple_attr_check_format(__fmt, 0ull); \
136 return spufs_attr_open(inode, file, __get, __set, __fmt); \
137} \
138static const struct file_operations __fops = { \
139 .open = __fops ## _open, \
140 .release = spufs_attr_release, \
141 .read = spufs_attr_read, \
142 .write = spufs_attr_write, \
143 .llseek = generic_file_llseek, \
144};
145
146
147static int
148spufs_mem_open(struct inode *inode, struct file *file)
149{
150 struct spufs_inode_info *i = SPUFS_I(inode);
151 struct spu_context *ctx = i->i_ctx;
152
153 mutex_lock(&ctx->mapping_lock);
154 file->private_data = ctx;
155 if (!i->i_openers++)
156 ctx->local_store = inode->i_mapping;
157 mutex_unlock(&ctx->mapping_lock);
158 return 0;
159}
160
161static int
162spufs_mem_release(struct inode *inode, struct file *file)
163{
164 struct spufs_inode_info *i = SPUFS_I(inode);
165 struct spu_context *ctx = i->i_ctx;
166
167 mutex_lock(&ctx->mapping_lock);
168 if (!--i->i_openers)
169 ctx->local_store = NULL;
170 mutex_unlock(&ctx->mapping_lock);
171 return 0;
172}
173
174static ssize_t
175__spufs_mem_read(struct spu_context *ctx, char __user *buffer,
176 size_t size, loff_t *pos)
177{
178 char *local_store = ctx->ops->get_ls(ctx);
179 return simple_read_from_buffer(buffer, size, pos, local_store,
180 LS_SIZE);
181}
182
183static ssize_t
184spufs_mem_read(struct file *file, char __user *buffer,
185 size_t size, loff_t *pos)
186{
187 struct spu_context *ctx = file->private_data;
188 ssize_t ret;
189
190 ret = spu_acquire(ctx);
191 if (ret)
192 return ret;
193 ret = __spufs_mem_read(ctx, buffer, size, pos);
194 spu_release(ctx);
195
196 return ret;
197}
198
199static ssize_t
200spufs_mem_write(struct file *file, const char __user *buffer,
201 size_t size, loff_t *ppos)
202{
203 struct spu_context *ctx = file->private_data;
204 char *local_store;
205 loff_t pos = *ppos;
206 int ret;
207
208 if (pos > LS_SIZE)
209 return -EFBIG;
210
211 ret = spu_acquire(ctx);
212 if (ret)
213 return ret;
214
215 local_store = ctx->ops->get_ls(ctx);
216 size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size);
217 spu_release(ctx);
218
219 return size;
220}
221
222static vm_fault_t
223spufs_mem_mmap_fault(struct vm_fault *vmf)
224{
225 struct vm_area_struct *vma = vmf->vma;
226 struct spu_context *ctx = vma->vm_file->private_data;
227 unsigned long pfn, offset;
228 vm_fault_t ret;
229
230 offset = vmf->pgoff << PAGE_SHIFT;
231 if (offset >= LS_SIZE)
232 return VM_FAULT_SIGBUS;
233
234 pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n",
235 vmf->address, offset);
236
237 if (spu_acquire(ctx))
238 return VM_FAULT_NOPAGE;
239
240 if (ctx->state == SPU_STATE_SAVED) {
241 vma->vm_page_prot = pgprot_cached(vma->vm_page_prot);
242 pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset);
243 } else {
244 vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot);
245 pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT;
246 }
247 ret = vmf_insert_pfn(vma, vmf->address, pfn);
248
249 spu_release(ctx);
250
251 return ret;
252}
253
254static int spufs_mem_mmap_access(struct vm_area_struct *vma,
255 unsigned long address,
256 void *buf, int len, int write)
257{
258 struct spu_context *ctx = vma->vm_file->private_data;
259 unsigned long offset = address - vma->vm_start;
260 char *local_store;
261
262 if (write && !(vma->vm_flags & VM_WRITE))
263 return -EACCES;
264 if (spu_acquire(ctx))
265 return -EINTR;
266 if ((offset + len) > vma->vm_end)
267 len = vma->vm_end - offset;
268 local_store = ctx->ops->get_ls(ctx);
269 if (write)
270 memcpy_toio(local_store + offset, buf, len);
271 else
272 memcpy_fromio(buf, local_store + offset, len);
273 spu_release(ctx);
274 return len;
275}
276
277static const struct vm_operations_struct spufs_mem_mmap_vmops = {
278 .fault = spufs_mem_mmap_fault,
279 .access = spufs_mem_mmap_access,
280};
281
282static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
283{
284 if (!(vma->vm_flags & VM_SHARED))
285 return -EINVAL;
286
287 vma->vm_flags |= VM_IO | VM_PFNMAP;
288 vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot);
289
290 vma->vm_ops = &spufs_mem_mmap_vmops;
291 return 0;
292}
293
294static const struct file_operations spufs_mem_fops = {
295 .open = spufs_mem_open,
296 .release = spufs_mem_release,
297 .read = spufs_mem_read,
298 .write = spufs_mem_write,
299 .llseek = generic_file_llseek,
300 .mmap = spufs_mem_mmap,
301};
302
303static vm_fault_t spufs_ps_fault(struct vm_fault *vmf,
304 unsigned long ps_offs,
305 unsigned long ps_size)
306{
307 struct spu_context *ctx = vmf->vma->vm_file->private_data;
308 unsigned long area, offset = vmf->pgoff << PAGE_SHIFT;
309 int err = 0;
310 vm_fault_t ret = VM_FAULT_NOPAGE;
311
312 spu_context_nospu_trace(spufs_ps_fault__enter, ctx);
313
314 if (offset >= ps_size)
315 return VM_FAULT_SIGBUS;
316
317 if (fatal_signal_pending(current))
318 return VM_FAULT_SIGBUS;
319
320
321
322
323
324
325 get_spu_context(ctx);
326
327
328
329
330
331
332
333
334
335 if (spu_acquire(ctx))
336 goto refault;
337
338 if (ctx->state == SPU_STATE_SAVED) {
339 up_read(¤t->mm->mmap_sem);
340 spu_context_nospu_trace(spufs_ps_fault__sleep, ctx);
341 err = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
342 spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu);
343 down_read(¤t->mm->mmap_sem);
344 } else {
345 area = ctx->spu->problem_phys + ps_offs;
346 ret = vmf_insert_pfn(vmf->vma, vmf->address,
347 (area + offset) >> PAGE_SHIFT);
348 spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu);
349 }
350
351 if (!err)
352 spu_release(ctx);
353
354refault:
355 put_spu_context(ctx);
356 return ret;
357}
358
359#if SPUFS_MMAP_4K
360static vm_fault_t spufs_cntl_mmap_fault(struct vm_fault *vmf)
361{
362 return spufs_ps_fault(vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
363}
364
365static const struct vm_operations_struct spufs_cntl_mmap_vmops = {
366 .fault = spufs_cntl_mmap_fault,
367};
368
369
370
371
372static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma)
373{
374 if (!(vma->vm_flags & VM_SHARED))
375 return -EINVAL;
376
377 vma->vm_flags |= VM_IO | VM_PFNMAP;
378 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
379
380 vma->vm_ops = &spufs_cntl_mmap_vmops;
381 return 0;
382}
383#else
384#define spufs_cntl_mmap NULL
385#endif
386
387static int spufs_cntl_get(void *data, u64 *val)
388{
389 struct spu_context *ctx = data;
390 int ret;
391
392 ret = spu_acquire(ctx);
393 if (ret)
394 return ret;
395 *val = ctx->ops->status_read(ctx);
396 spu_release(ctx);
397
398 return 0;
399}
400
401static int spufs_cntl_set(void *data, u64 val)
402{
403 struct spu_context *ctx = data;
404 int ret;
405
406 ret = spu_acquire(ctx);
407 if (ret)
408 return ret;
409 ctx->ops->runcntl_write(ctx, val);
410 spu_release(ctx);
411
412 return 0;
413}
414
415static int spufs_cntl_open(struct inode *inode, struct file *file)
416{
417 struct spufs_inode_info *i = SPUFS_I(inode);
418 struct spu_context *ctx = i->i_ctx;
419
420 mutex_lock(&ctx->mapping_lock);
421 file->private_data = ctx;
422 if (!i->i_openers++)
423 ctx->cntl = inode->i_mapping;
424 mutex_unlock(&ctx->mapping_lock);
425 return simple_attr_open(inode, file, spufs_cntl_get,
426 spufs_cntl_set, "0x%08lx");
427}
428
429static int
430spufs_cntl_release(struct inode *inode, struct file *file)
431{
432 struct spufs_inode_info *i = SPUFS_I(inode);
433 struct spu_context *ctx = i->i_ctx;
434
435 simple_attr_release(inode, file);
436
437 mutex_lock(&ctx->mapping_lock);
438 if (!--i->i_openers)
439 ctx->cntl = NULL;
440 mutex_unlock(&ctx->mapping_lock);
441 return 0;
442}
443
444static const struct file_operations spufs_cntl_fops = {
445 .open = spufs_cntl_open,
446 .release = spufs_cntl_release,
447 .read = simple_attr_read,
448 .write = simple_attr_write,
449 .llseek = no_llseek,
450 .mmap = spufs_cntl_mmap,
451};
452
453static int
454spufs_regs_open(struct inode *inode, struct file *file)
455{
456 struct spufs_inode_info *i = SPUFS_I(inode);
457 file->private_data = i->i_ctx;
458 return 0;
459}
460
461static ssize_t
462__spufs_regs_read(struct spu_context *ctx, char __user *buffer,
463 size_t size, loff_t *pos)
464{
465 struct spu_lscsa *lscsa = ctx->csa.lscsa;
466 return simple_read_from_buffer(buffer, size, pos,
467 lscsa->gprs, sizeof lscsa->gprs);
468}
469
470static ssize_t
471spufs_regs_read(struct file *file, char __user *buffer,
472 size_t size, loff_t *pos)
473{
474 int ret;
475 struct spu_context *ctx = file->private_data;
476
477
478
479 if (*pos >= sizeof(ctx->csa.lscsa->gprs))
480 return 0;
481
482 ret = spu_acquire_saved(ctx);
483 if (ret)
484 return ret;
485 ret = __spufs_regs_read(ctx, buffer, size, pos);
486 spu_release_saved(ctx);
487 return ret;
488}
489
490static ssize_t
491spufs_regs_write(struct file *file, const char __user *buffer,
492 size_t size, loff_t *pos)
493{
494 struct spu_context *ctx = file->private_data;
495 struct spu_lscsa *lscsa = ctx->csa.lscsa;
496 int ret;
497
498 if (*pos >= sizeof(lscsa->gprs))
499 return -EFBIG;
500
501 ret = spu_acquire_saved(ctx);
502 if (ret)
503 return ret;
504
505 size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos,
506 buffer, size);
507
508 spu_release_saved(ctx);
509 return size;
510}
511
512static const struct file_operations spufs_regs_fops = {
513 .open = spufs_regs_open,
514 .read = spufs_regs_read,
515 .write = spufs_regs_write,
516 .llseek = generic_file_llseek,
517};
518
519static ssize_t
520__spufs_fpcr_read(struct spu_context *ctx, char __user * buffer,
521 size_t size, loff_t * pos)
522{
523 struct spu_lscsa *lscsa = ctx->csa.lscsa;
524 return simple_read_from_buffer(buffer, size, pos,
525 &lscsa->fpcr, sizeof(lscsa->fpcr));
526}
527
528static ssize_t
529spufs_fpcr_read(struct file *file, char __user * buffer,
530 size_t size, loff_t * pos)
531{
532 int ret;
533 struct spu_context *ctx = file->private_data;
534
535 ret = spu_acquire_saved(ctx);
536 if (ret)
537 return ret;
538 ret = __spufs_fpcr_read(ctx, buffer, size, pos);
539 spu_release_saved(ctx);
540 return ret;
541}
542
543static ssize_t
544spufs_fpcr_write(struct file *file, const char __user * buffer,
545 size_t size, loff_t * pos)
546{
547 struct spu_context *ctx = file->private_data;
548 struct spu_lscsa *lscsa = ctx->csa.lscsa;
549 int ret;
550
551 if (*pos >= sizeof(lscsa->fpcr))
552 return -EFBIG;
553
554 ret = spu_acquire_saved(ctx);
555 if (ret)
556 return ret;
557
558 size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos,
559 buffer, size);
560
561 spu_release_saved(ctx);
562 return size;
563}
564
565static const struct file_operations spufs_fpcr_fops = {
566 .open = spufs_regs_open,
567 .read = spufs_fpcr_read,
568 .write = spufs_fpcr_write,
569 .llseek = generic_file_llseek,
570};
571
572
573static int spufs_pipe_open(struct inode *inode, struct file *file)
574{
575 struct spufs_inode_info *i = SPUFS_I(inode);
576 file->private_data = i->i_ctx;
577
578 return stream_open(inode, file);
579}
580
581
582
583
584
585
586
587
588
589static ssize_t spufs_mbox_read(struct file *file, char __user *buf,
590 size_t len, loff_t *pos)
591{
592 struct spu_context *ctx = file->private_data;
593 u32 mbox_data, __user *udata;
594 ssize_t count;
595
596 if (len < 4)
597 return -EINVAL;
598
599 if (!access_ok(buf, len))
600 return -EFAULT;
601
602 udata = (void __user *)buf;
603
604 count = spu_acquire(ctx);
605 if (count)
606 return count;
607
608 for (count = 0; (count + 4) <= len; count += 4, udata++) {
609 int ret;
610 ret = ctx->ops->mbox_read(ctx, &mbox_data);
611 if (ret == 0)
612 break;
613
614
615
616
617
618
619 ret = __put_user(mbox_data, udata);
620 if (ret) {
621 if (!count)
622 count = -EFAULT;
623 break;
624 }
625 }
626 spu_release(ctx);
627
628 if (!count)
629 count = -EAGAIN;
630
631 return count;
632}
633
634static const struct file_operations spufs_mbox_fops = {
635 .open = spufs_pipe_open,
636 .read = spufs_mbox_read,
637 .llseek = no_llseek,
638};
639
640static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf,
641 size_t len, loff_t *pos)
642{
643 struct spu_context *ctx = file->private_data;
644 ssize_t ret;
645 u32 mbox_stat;
646
647 if (len < 4)
648 return -EINVAL;
649
650 ret = spu_acquire(ctx);
651 if (ret)
652 return ret;
653
654 mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff;
655
656 spu_release(ctx);
657
658 if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat))
659 return -EFAULT;
660
661 return 4;
662}
663
664static const struct file_operations spufs_mbox_stat_fops = {
665 .open = spufs_pipe_open,
666 .read = spufs_mbox_stat_read,
667 .llseek = no_llseek,
668};
669
670
671size_t spu_ibox_read(struct spu_context *ctx, u32 *data)
672{
673 return ctx->ops->ibox_read(ctx, data);
674}
675
676
677void spufs_ibox_callback(struct spu *spu)
678{
679 struct spu_context *ctx = spu->ctx;
680
681 if (ctx)
682 wake_up_all(&ctx->ibox_wq);
683}
684
685
686
687
688
689
690
691
692
693
694
695
696
697static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
698 size_t len, loff_t *pos)
699{
700 struct spu_context *ctx = file->private_data;
701 u32 ibox_data, __user *udata;
702 ssize_t count;
703
704 if (len < 4)
705 return -EINVAL;
706
707 if (!access_ok(buf, len))
708 return -EFAULT;
709
710 udata = (void __user *)buf;
711
712 count = spu_acquire(ctx);
713 if (count)
714 goto out;
715
716
717 count = 0;
718 if (file->f_flags & O_NONBLOCK) {
719 if (!spu_ibox_read(ctx, &ibox_data)) {
720 count = -EAGAIN;
721 goto out_unlock;
722 }
723 } else {
724 count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data));
725 if (count)
726 goto out;
727 }
728
729
730 count = __put_user(ibox_data, udata);
731 if (count)
732 goto out_unlock;
733
734 for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
735 int ret;
736 ret = ctx->ops->ibox_read(ctx, &ibox_data);
737 if (ret == 0)
738 break;
739
740
741
742
743
744 ret = __put_user(ibox_data, udata);
745 if (ret)
746 break;
747 }
748
749out_unlock:
750 spu_release(ctx);
751out:
752 return count;
753}
754
755static __poll_t spufs_ibox_poll(struct file *file, poll_table *wait)
756{
757 struct spu_context *ctx = file->private_data;
758 __poll_t mask;
759
760 poll_wait(file, &ctx->ibox_wq, wait);
761
762
763
764
765
766 mutex_lock(&ctx->state_mutex);
767 mask = ctx->ops->mbox_stat_poll(ctx, EPOLLIN | EPOLLRDNORM);
768 spu_release(ctx);
769
770 return mask;
771}
772
773static const struct file_operations spufs_ibox_fops = {
774 .open = spufs_pipe_open,
775 .read = spufs_ibox_read,
776 .poll = spufs_ibox_poll,
777 .llseek = no_llseek,
778};
779
780static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf,
781 size_t len, loff_t *pos)
782{
783 struct spu_context *ctx = file->private_data;
784 ssize_t ret;
785 u32 ibox_stat;
786
787 if (len < 4)
788 return -EINVAL;
789
790 ret = spu_acquire(ctx);
791 if (ret)
792 return ret;
793 ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff;
794 spu_release(ctx);
795
796 if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat))
797 return -EFAULT;
798
799 return 4;
800}
801
802static const struct file_operations spufs_ibox_stat_fops = {
803 .open = spufs_pipe_open,
804 .read = spufs_ibox_stat_read,
805 .llseek = no_llseek,
806};
807
808
809size_t spu_wbox_write(struct spu_context *ctx, u32 data)
810{
811 return ctx->ops->wbox_write(ctx, data);
812}
813
814
815void spufs_wbox_callback(struct spu *spu)
816{
817 struct spu_context *ctx = spu->ctx;
818
819 if (ctx)
820 wake_up_all(&ctx->wbox_wq);
821}
822
823
824
825
826
827
828
829
830
831
832
833
834
835static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
836 size_t len, loff_t *pos)
837{
838 struct spu_context *ctx = file->private_data;
839 u32 wbox_data, __user *udata;
840 ssize_t count;
841
842 if (len < 4)
843 return -EINVAL;
844
845 udata = (void __user *)buf;
846 if (!access_ok(buf, len))
847 return -EFAULT;
848
849 if (__get_user(wbox_data, udata))
850 return -EFAULT;
851
852 count = spu_acquire(ctx);
853 if (count)
854 goto out;
855
856
857
858
859
860 count = 0;
861 if (file->f_flags & O_NONBLOCK) {
862 if (!spu_wbox_write(ctx, wbox_data)) {
863 count = -EAGAIN;
864 goto out_unlock;
865 }
866 } else {
867 count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data));
868 if (count)
869 goto out;
870 }
871
872
873
874 for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
875 int ret;
876 ret = __get_user(wbox_data, udata);
877 if (ret)
878 break;
879
880 ret = spu_wbox_write(ctx, wbox_data);
881 if (ret == 0)
882 break;
883 }
884
885out_unlock:
886 spu_release(ctx);
887out:
888 return count;
889}
890
891static __poll_t spufs_wbox_poll(struct file *file, poll_table *wait)
892{
893 struct spu_context *ctx = file->private_data;
894 __poll_t mask;
895
896 poll_wait(file, &ctx->wbox_wq, wait);
897
898
899
900
901
902 mutex_lock(&ctx->state_mutex);
903 mask = ctx->ops->mbox_stat_poll(ctx, EPOLLOUT | EPOLLWRNORM);
904 spu_release(ctx);
905
906 return mask;
907}
908
909static const struct file_operations spufs_wbox_fops = {
910 .open = spufs_pipe_open,
911 .write = spufs_wbox_write,
912 .poll = spufs_wbox_poll,
913 .llseek = no_llseek,
914};
915
916static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf,
917 size_t len, loff_t *pos)
918{
919 struct spu_context *ctx = file->private_data;
920 ssize_t ret;
921 u32 wbox_stat;
922
923 if (len < 4)
924 return -EINVAL;
925
926 ret = spu_acquire(ctx);
927 if (ret)
928 return ret;
929 wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff;
930 spu_release(ctx);
931
932 if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat))
933 return -EFAULT;
934
935 return 4;
936}
937
938static const struct file_operations spufs_wbox_stat_fops = {
939 .open = spufs_pipe_open,
940 .read = spufs_wbox_stat_read,
941 .llseek = no_llseek,
942};
943
944static int spufs_signal1_open(struct inode *inode, struct file *file)
945{
946 struct spufs_inode_info *i = SPUFS_I(inode);
947 struct spu_context *ctx = i->i_ctx;
948
949 mutex_lock(&ctx->mapping_lock);
950 file->private_data = ctx;
951 if (!i->i_openers++)
952 ctx->signal1 = inode->i_mapping;
953 mutex_unlock(&ctx->mapping_lock);
954 return nonseekable_open(inode, file);
955}
956
957static int
958spufs_signal1_release(struct inode *inode, struct file *file)
959{
960 struct spufs_inode_info *i = SPUFS_I(inode);
961 struct spu_context *ctx = i->i_ctx;
962
963 mutex_lock(&ctx->mapping_lock);
964 if (!--i->i_openers)
965 ctx->signal1 = NULL;
966 mutex_unlock(&ctx->mapping_lock);
967 return 0;
968}
969
970static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf,
971 size_t len, loff_t *pos)
972{
973 int ret = 0;
974 u32 data;
975
976 if (len < 4)
977 return -EINVAL;
978
979 if (ctx->csa.spu_chnlcnt_RW[3]) {
980 data = ctx->csa.spu_chnldata_RW[3];
981 ret = 4;
982 }
983
984 if (!ret)
985 goto out;
986
987 if (copy_to_user(buf, &data, 4))
988 return -EFAULT;
989
990out:
991 return ret;
992}
993
994static ssize_t spufs_signal1_read(struct file *file, char __user *buf,
995 size_t len, loff_t *pos)
996{
997 int ret;
998 struct spu_context *ctx = file->private_data;
999
1000 ret = spu_acquire_saved(ctx);
1001 if (ret)
1002 return ret;
1003 ret = __spufs_signal1_read(ctx, buf, len, pos);
1004 spu_release_saved(ctx);
1005
1006 return ret;
1007}
1008
1009static ssize_t spufs_signal1_write(struct file *file, const char __user *buf,
1010 size_t len, loff_t *pos)
1011{
1012 struct spu_context *ctx;
1013 ssize_t ret;
1014 u32 data;
1015
1016 ctx = file->private_data;
1017
1018 if (len < 4)
1019 return -EINVAL;
1020
1021 if (copy_from_user(&data, buf, 4))
1022 return -EFAULT;
1023
1024 ret = spu_acquire(ctx);
1025 if (ret)
1026 return ret;
1027 ctx->ops->signal1_write(ctx, data);
1028 spu_release(ctx);
1029
1030 return 4;
1031}
1032
1033static vm_fault_t
1034spufs_signal1_mmap_fault(struct vm_fault *vmf)
1035{
1036#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
1037 return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE);
1038#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
1039
1040
1041
1042 return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
1043#else
1044#error unsupported page size
1045#endif
1046}
1047
1048static const struct vm_operations_struct spufs_signal1_mmap_vmops = {
1049 .fault = spufs_signal1_mmap_fault,
1050};
1051
1052static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma)
1053{
1054 if (!(vma->vm_flags & VM_SHARED))
1055 return -EINVAL;
1056
1057 vma->vm_flags |= VM_IO | VM_PFNMAP;
1058 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1059
1060 vma->vm_ops = &spufs_signal1_mmap_vmops;
1061 return 0;
1062}
1063
1064static const struct file_operations spufs_signal1_fops = {
1065 .open = spufs_signal1_open,
1066 .release = spufs_signal1_release,
1067 .read = spufs_signal1_read,
1068 .write = spufs_signal1_write,
1069 .mmap = spufs_signal1_mmap,
1070 .llseek = no_llseek,
1071};
1072
1073static const struct file_operations spufs_signal1_nosched_fops = {
1074 .open = spufs_signal1_open,
1075 .release = spufs_signal1_release,
1076 .write = spufs_signal1_write,
1077 .mmap = spufs_signal1_mmap,
1078 .llseek = no_llseek,
1079};
1080
1081static int spufs_signal2_open(struct inode *inode, struct file *file)
1082{
1083 struct spufs_inode_info *i = SPUFS_I(inode);
1084 struct spu_context *ctx = i->i_ctx;
1085
1086 mutex_lock(&ctx->mapping_lock);
1087 file->private_data = ctx;
1088 if (!i->i_openers++)
1089 ctx->signal2 = inode->i_mapping;
1090 mutex_unlock(&ctx->mapping_lock);
1091 return nonseekable_open(inode, file);
1092}
1093
1094static int
1095spufs_signal2_release(struct inode *inode, struct file *file)
1096{
1097 struct spufs_inode_info *i = SPUFS_I(inode);
1098 struct spu_context *ctx = i->i_ctx;
1099
1100 mutex_lock(&ctx->mapping_lock);
1101 if (!--i->i_openers)
1102 ctx->signal2 = NULL;
1103 mutex_unlock(&ctx->mapping_lock);
1104 return 0;
1105}
1106
1107static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf,
1108 size_t len, loff_t *pos)
1109{
1110 int ret = 0;
1111 u32 data;
1112
1113 if (len < 4)
1114 return -EINVAL;
1115
1116 if (ctx->csa.spu_chnlcnt_RW[4]) {
1117 data = ctx->csa.spu_chnldata_RW[4];
1118 ret = 4;
1119 }
1120
1121 if (!ret)
1122 goto out;
1123
1124 if (copy_to_user(buf, &data, 4))
1125 return -EFAULT;
1126
1127out:
1128 return ret;
1129}
1130
1131static ssize_t spufs_signal2_read(struct file *file, char __user *buf,
1132 size_t len, loff_t *pos)
1133{
1134 struct spu_context *ctx = file->private_data;
1135 int ret;
1136
1137 ret = spu_acquire_saved(ctx);
1138 if (ret)
1139 return ret;
1140 ret = __spufs_signal2_read(ctx, buf, len, pos);
1141 spu_release_saved(ctx);
1142
1143 return ret;
1144}
1145
1146static ssize_t spufs_signal2_write(struct file *file, const char __user *buf,
1147 size_t len, loff_t *pos)
1148{
1149 struct spu_context *ctx;
1150 ssize_t ret;
1151 u32 data;
1152
1153 ctx = file->private_data;
1154
1155 if (len < 4)
1156 return -EINVAL;
1157
1158 if (copy_from_user(&data, buf, 4))
1159 return -EFAULT;
1160
1161 ret = spu_acquire(ctx);
1162 if (ret)
1163 return ret;
1164 ctx->ops->signal2_write(ctx, data);
1165 spu_release(ctx);
1166
1167 return 4;
1168}
1169
1170#if SPUFS_MMAP_4K
1171static vm_fault_t
1172spufs_signal2_mmap_fault(struct vm_fault *vmf)
1173{
1174#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
1175 return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE);
1176#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
1177
1178
1179
1180 return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
1181#else
1182#error unsupported page size
1183#endif
1184}
1185
1186static const struct vm_operations_struct spufs_signal2_mmap_vmops = {
1187 .fault = spufs_signal2_mmap_fault,
1188};
1189
1190static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma)
1191{
1192 if (!(vma->vm_flags & VM_SHARED))
1193 return -EINVAL;
1194
1195 vma->vm_flags |= VM_IO | VM_PFNMAP;
1196 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1197
1198 vma->vm_ops = &spufs_signal2_mmap_vmops;
1199 return 0;
1200}
1201#else
1202#define spufs_signal2_mmap NULL
1203#endif
1204
1205static const struct file_operations spufs_signal2_fops = {
1206 .open = spufs_signal2_open,
1207 .release = spufs_signal2_release,
1208 .read = spufs_signal2_read,
1209 .write = spufs_signal2_write,
1210 .mmap = spufs_signal2_mmap,
1211 .llseek = no_llseek,
1212};
1213
1214static const struct file_operations spufs_signal2_nosched_fops = {
1215 .open = spufs_signal2_open,
1216 .release = spufs_signal2_release,
1217 .write = spufs_signal2_write,
1218 .mmap = spufs_signal2_mmap,
1219 .llseek = no_llseek,
1220};
1221
1222
1223
1224
1225
1226
1227#define SPU_ATTR_NOACQUIRE 0
1228#define SPU_ATTR_ACQUIRE 1
1229#define SPU_ATTR_ACQUIRE_SAVED 2
1230
1231#define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \
1232static int __##__get(void *data, u64 *val) \
1233{ \
1234 struct spu_context *ctx = data; \
1235 int ret = 0; \
1236 \
1237 if (__acquire == SPU_ATTR_ACQUIRE) { \
1238 ret = spu_acquire(ctx); \
1239 if (ret) \
1240 return ret; \
1241 *val = __get(ctx); \
1242 spu_release(ctx); \
1243 } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \
1244 ret = spu_acquire_saved(ctx); \
1245 if (ret) \
1246 return ret; \
1247 *val = __get(ctx); \
1248 spu_release_saved(ctx); \
1249 } else \
1250 *val = __get(ctx); \
1251 \
1252 return 0; \
1253} \
1254DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt);
1255
1256static int spufs_signal1_type_set(void *data, u64 val)
1257{
1258 struct spu_context *ctx = data;
1259 int ret;
1260
1261 ret = spu_acquire(ctx);
1262 if (ret)
1263 return ret;
1264 ctx->ops->signal1_type_set(ctx, val);
1265 spu_release(ctx);
1266
1267 return 0;
1268}
1269
1270static u64 spufs_signal1_type_get(struct spu_context *ctx)
1271{
1272 return ctx->ops->signal1_type_get(ctx);
1273}
1274DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get,
1275 spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE);
1276
1277
1278static int spufs_signal2_type_set(void *data, u64 val)
1279{
1280 struct spu_context *ctx = data;
1281 int ret;
1282
1283 ret = spu_acquire(ctx);
1284 if (ret)
1285 return ret;
1286 ctx->ops->signal2_type_set(ctx, val);
1287 spu_release(ctx);
1288
1289 return 0;
1290}
1291
1292static u64 spufs_signal2_type_get(struct spu_context *ctx)
1293{
1294 return ctx->ops->signal2_type_get(ctx);
1295}
1296DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
1297 spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE);
1298
1299#if SPUFS_MMAP_4K
1300static vm_fault_t
1301spufs_mss_mmap_fault(struct vm_fault *vmf)
1302{
1303 return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
1304}
1305
1306static const struct vm_operations_struct spufs_mss_mmap_vmops = {
1307 .fault = spufs_mss_mmap_fault,
1308};
1309
1310
1311
1312
1313static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma)
1314{
1315 if (!(vma->vm_flags & VM_SHARED))
1316 return -EINVAL;
1317
1318 vma->vm_flags |= VM_IO | VM_PFNMAP;
1319 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1320
1321 vma->vm_ops = &spufs_mss_mmap_vmops;
1322 return 0;
1323}
1324#else
1325#define spufs_mss_mmap NULL
1326#endif
1327
1328static int spufs_mss_open(struct inode *inode, struct file *file)
1329{
1330 struct spufs_inode_info *i = SPUFS_I(inode);
1331 struct spu_context *ctx = i->i_ctx;
1332
1333 file->private_data = i->i_ctx;
1334
1335 mutex_lock(&ctx->mapping_lock);
1336 if (!i->i_openers++)
1337 ctx->mss = inode->i_mapping;
1338 mutex_unlock(&ctx->mapping_lock);
1339 return nonseekable_open(inode, file);
1340}
1341
1342static int
1343spufs_mss_release(struct inode *inode, struct file *file)
1344{
1345 struct spufs_inode_info *i = SPUFS_I(inode);
1346 struct spu_context *ctx = i->i_ctx;
1347
1348 mutex_lock(&ctx->mapping_lock);
1349 if (!--i->i_openers)
1350 ctx->mss = NULL;
1351 mutex_unlock(&ctx->mapping_lock);
1352 return 0;
1353}
1354
1355static const struct file_operations spufs_mss_fops = {
1356 .open = spufs_mss_open,
1357 .release = spufs_mss_release,
1358 .mmap = spufs_mss_mmap,
1359 .llseek = no_llseek,
1360};
1361
1362static vm_fault_t
1363spufs_psmap_mmap_fault(struct vm_fault *vmf)
1364{
1365 return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE);
1366}
1367
1368static const struct vm_operations_struct spufs_psmap_mmap_vmops = {
1369 .fault = spufs_psmap_mmap_fault,
1370};
1371
1372
1373
1374
1375static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma)
1376{
1377 if (!(vma->vm_flags & VM_SHARED))
1378 return -EINVAL;
1379
1380 vma->vm_flags |= VM_IO | VM_PFNMAP;
1381 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1382
1383 vma->vm_ops = &spufs_psmap_mmap_vmops;
1384 return 0;
1385}
1386
1387static int spufs_psmap_open(struct inode *inode, struct file *file)
1388{
1389 struct spufs_inode_info *i = SPUFS_I(inode);
1390 struct spu_context *ctx = i->i_ctx;
1391
1392 mutex_lock(&ctx->mapping_lock);
1393 file->private_data = i->i_ctx;
1394 if (!i->i_openers++)
1395 ctx->psmap = inode->i_mapping;
1396 mutex_unlock(&ctx->mapping_lock);
1397 return nonseekable_open(inode, file);
1398}
1399
1400static int
1401spufs_psmap_release(struct inode *inode, struct file *file)
1402{
1403 struct spufs_inode_info *i = SPUFS_I(inode);
1404 struct spu_context *ctx = i->i_ctx;
1405
1406 mutex_lock(&ctx->mapping_lock);
1407 if (!--i->i_openers)
1408 ctx->psmap = NULL;
1409 mutex_unlock(&ctx->mapping_lock);
1410 return 0;
1411}
1412
1413static const struct file_operations spufs_psmap_fops = {
1414 .open = spufs_psmap_open,
1415 .release = spufs_psmap_release,
1416 .mmap = spufs_psmap_mmap,
1417 .llseek = no_llseek,
1418};
1419
1420
1421#if SPUFS_MMAP_4K
1422static vm_fault_t
1423spufs_mfc_mmap_fault(struct vm_fault *vmf)
1424{
1425 return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
1426}
1427
1428static const struct vm_operations_struct spufs_mfc_mmap_vmops = {
1429 .fault = spufs_mfc_mmap_fault,
1430};
1431
1432
1433
1434
1435static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma)
1436{
1437 if (!(vma->vm_flags & VM_SHARED))
1438 return -EINVAL;
1439
1440 vma->vm_flags |= VM_IO | VM_PFNMAP;
1441 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
1442
1443 vma->vm_ops = &spufs_mfc_mmap_vmops;
1444 return 0;
1445}
1446#else
1447#define spufs_mfc_mmap NULL
1448#endif
1449
1450static int spufs_mfc_open(struct inode *inode, struct file *file)
1451{
1452 struct spufs_inode_info *i = SPUFS_I(inode);
1453 struct spu_context *ctx = i->i_ctx;
1454
1455
1456 if (ctx->owner != current->mm)
1457 return -EINVAL;
1458
1459 if (atomic_read(&inode->i_count) != 1)
1460 return -EBUSY;
1461
1462 mutex_lock(&ctx->mapping_lock);
1463 file->private_data = ctx;
1464 if (!i->i_openers++)
1465 ctx->mfc = inode->i_mapping;
1466 mutex_unlock(&ctx->mapping_lock);
1467 return nonseekable_open(inode, file);
1468}
1469
1470static int
1471spufs_mfc_release(struct inode *inode, struct file *file)
1472{
1473 struct spufs_inode_info *i = SPUFS_I(inode);
1474 struct spu_context *ctx = i->i_ctx;
1475
1476 mutex_lock(&ctx->mapping_lock);
1477 if (!--i->i_openers)
1478 ctx->mfc = NULL;
1479 mutex_unlock(&ctx->mapping_lock);
1480 return 0;
1481}
1482
1483
1484void spufs_mfc_callback(struct spu *spu)
1485{
1486 struct spu_context *ctx = spu->ctx;
1487
1488 if (ctx)
1489 wake_up_all(&ctx->mfc_wq);
1490}
1491
1492static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status)
1493{
1494
1495
1496 *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait;
1497 ctx->tagwait &= ~*status;
1498 if (*status)
1499 return 1;
1500
1501
1502
1503 ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
1504 return 0;
1505}
1506
1507static ssize_t spufs_mfc_read(struct file *file, char __user *buffer,
1508 size_t size, loff_t *pos)
1509{
1510 struct spu_context *ctx = file->private_data;
1511 int ret = -EINVAL;
1512 u32 status;
1513
1514 if (size != 4)
1515 goto out;
1516
1517 ret = spu_acquire(ctx);
1518 if (ret)
1519 return ret;
1520
1521 ret = -EINVAL;
1522 if (file->f_flags & O_NONBLOCK) {
1523 status = ctx->ops->read_mfc_tagstatus(ctx);
1524 if (!(status & ctx->tagwait))
1525 ret = -EAGAIN;
1526 else
1527
1528 ctx->tagwait &= ~status;
1529 } else {
1530 ret = spufs_wait(ctx->mfc_wq,
1531 spufs_read_mfc_tagstatus(ctx, &status));
1532 if (ret)
1533 goto out;
1534 }
1535 spu_release(ctx);
1536
1537 ret = 4;
1538 if (copy_to_user(buffer, &status, 4))
1539 ret = -EFAULT;
1540
1541out:
1542 return ret;
1543}
1544
1545static int spufs_check_valid_dma(struct mfc_dma_command *cmd)
1546{
1547 pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa,
1548 cmd->ea, cmd->size, cmd->tag, cmd->cmd);
1549
1550 switch (cmd->cmd) {
1551 case MFC_PUT_CMD:
1552 case MFC_PUTF_CMD:
1553 case MFC_PUTB_CMD:
1554 case MFC_GET_CMD:
1555 case MFC_GETF_CMD:
1556 case MFC_GETB_CMD:
1557 break;
1558 default:
1559 pr_debug("invalid DMA opcode %x\n", cmd->cmd);
1560 return -EIO;
1561 }
1562
1563 if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) {
1564 pr_debug("invalid DMA alignment, ea %llx lsa %x\n",
1565 cmd->ea, cmd->lsa);
1566 return -EIO;
1567 }
1568
1569 switch (cmd->size & 0xf) {
1570 case 1:
1571 break;
1572 case 2:
1573 if (cmd->lsa & 1)
1574 goto error;
1575 break;
1576 case 4:
1577 if (cmd->lsa & 3)
1578 goto error;
1579 break;
1580 case 8:
1581 if (cmd->lsa & 7)
1582 goto error;
1583 break;
1584 case 0:
1585 if (cmd->lsa & 15)
1586 goto error;
1587 break;
1588 error:
1589 default:
1590 pr_debug("invalid DMA alignment %x for size %x\n",
1591 cmd->lsa & 0xf, cmd->size);
1592 return -EIO;
1593 }
1594
1595 if (cmd->size > 16 * 1024) {
1596 pr_debug("invalid DMA size %x\n", cmd->size);
1597 return -EIO;
1598 }
1599
1600 if (cmd->tag & 0xfff0) {
1601
1602 pr_debug("invalid DMA tag\n");
1603 return -EIO;
1604 }
1605
1606 if (cmd->class) {
1607
1608 pr_debug("invalid DMA class\n");
1609 return -EIO;
1610 }
1611
1612 return 0;
1613}
1614
1615static int spu_send_mfc_command(struct spu_context *ctx,
1616 struct mfc_dma_command cmd,
1617 int *error)
1618{
1619 *error = ctx->ops->send_mfc_command(ctx, &cmd);
1620 if (*error == -EAGAIN) {
1621
1622
1623 ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
1624
1625
1626 *error = ctx->ops->send_mfc_command(ctx, &cmd);
1627 if (*error == -EAGAIN)
1628 return 0;
1629 }
1630 return 1;
1631}
1632
1633static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer,
1634 size_t size, loff_t *pos)
1635{
1636 struct spu_context *ctx = file->private_data;
1637 struct mfc_dma_command cmd;
1638 int ret = -EINVAL;
1639
1640 if (size != sizeof cmd)
1641 goto out;
1642
1643 ret = -EFAULT;
1644 if (copy_from_user(&cmd, buffer, sizeof cmd))
1645 goto out;
1646
1647 ret = spufs_check_valid_dma(&cmd);
1648 if (ret)
1649 goto out;
1650
1651 ret = spu_acquire(ctx);
1652 if (ret)
1653 goto out;
1654
1655 ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
1656 if (ret)
1657 goto out;
1658
1659 if (file->f_flags & O_NONBLOCK) {
1660 ret = ctx->ops->send_mfc_command(ctx, &cmd);
1661 } else {
1662 int status;
1663 ret = spufs_wait(ctx->mfc_wq,
1664 spu_send_mfc_command(ctx, cmd, &status));
1665 if (ret)
1666 goto out;
1667 if (status)
1668 ret = status;
1669 }
1670
1671 if (ret)
1672 goto out_unlock;
1673
1674 ctx->tagwait |= 1 << cmd.tag;
1675 ret = size;
1676
1677out_unlock:
1678 spu_release(ctx);
1679out:
1680 return ret;
1681}
1682
1683static __poll_t spufs_mfc_poll(struct file *file,poll_table *wait)
1684{
1685 struct spu_context *ctx = file->private_data;
1686 u32 free_elements, tagstatus;
1687 __poll_t mask;
1688
1689 poll_wait(file, &ctx->mfc_wq, wait);
1690
1691
1692
1693
1694
1695 mutex_lock(&ctx->state_mutex);
1696 ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2);
1697 free_elements = ctx->ops->get_mfc_free_elements(ctx);
1698 tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
1699 spu_release(ctx);
1700
1701 mask = 0;
1702 if (free_elements & 0xffff)
1703 mask |= EPOLLOUT | EPOLLWRNORM;
1704 if (tagstatus & ctx->tagwait)
1705 mask |= EPOLLIN | EPOLLRDNORM;
1706
1707 pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__,
1708 free_elements, tagstatus, ctx->tagwait);
1709
1710 return mask;
1711}
1712
1713static int spufs_mfc_flush(struct file *file, fl_owner_t id)
1714{
1715 struct spu_context *ctx = file->private_data;
1716 int ret;
1717
1718 ret = spu_acquire(ctx);
1719 if (ret)
1720 goto out;
1721#if 0
1722
1723 ret = spufs_wait(ctx->mfc_wq,
1724 ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2));
1725 if (ret)
1726 goto out;
1727 ret = spufs_wait(ctx->mfc_wq,
1728 ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait);
1729 if (ret)
1730 goto out;
1731#else
1732 ret = 0;
1733#endif
1734 spu_release(ctx);
1735out:
1736 return ret;
1737}
1738
1739static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync)
1740{
1741 struct inode *inode = file_inode(file);
1742 int err = file_write_and_wait_range(file, start, end);
1743 if (!err) {
1744 inode_lock(inode);
1745 err = spufs_mfc_flush(file, NULL);
1746 inode_unlock(inode);
1747 }
1748 return err;
1749}
1750
1751static const struct file_operations spufs_mfc_fops = {
1752 .open = spufs_mfc_open,
1753 .release = spufs_mfc_release,
1754 .read = spufs_mfc_read,
1755 .write = spufs_mfc_write,
1756 .poll = spufs_mfc_poll,
1757 .flush = spufs_mfc_flush,
1758 .fsync = spufs_mfc_fsync,
1759 .mmap = spufs_mfc_mmap,
1760 .llseek = no_llseek,
1761};
1762
1763static int spufs_npc_set(void *data, u64 val)
1764{
1765 struct spu_context *ctx = data;
1766 int ret;
1767
1768 ret = spu_acquire(ctx);
1769 if (ret)
1770 return ret;
1771 ctx->ops->npc_write(ctx, val);
1772 spu_release(ctx);
1773
1774 return 0;
1775}
1776
1777static u64 spufs_npc_get(struct spu_context *ctx)
1778{
1779 return ctx->ops->npc_read(ctx);
1780}
1781DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set,
1782 "0x%llx\n", SPU_ATTR_ACQUIRE);
1783
1784static int spufs_decr_set(void *data, u64 val)
1785{
1786 struct spu_context *ctx = data;
1787 struct spu_lscsa *lscsa = ctx->csa.lscsa;
1788 int ret;
1789
1790 ret = spu_acquire_saved(ctx);
1791 if (ret)
1792 return ret;
1793 lscsa->decr.slot[0] = (u32) val;
1794 spu_release_saved(ctx);
1795
1796 return 0;
1797}
1798
1799static u64 spufs_decr_get(struct spu_context *ctx)
1800{
1801 struct spu_lscsa *lscsa = ctx->csa.lscsa;
1802 return lscsa->decr.slot[0];
1803}
1804DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set,
1805 "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED);
1806
1807static int spufs_decr_status_set(void *data, u64 val)
1808{
1809 struct spu_context *ctx = data;
1810 int ret;
1811
1812 ret = spu_acquire_saved(ctx);
1813 if (ret)
1814 return ret;
1815 if (val)
1816 ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING;
1817 else
1818 ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING;
1819 spu_release_saved(ctx);
1820
1821 return 0;
1822}
1823
1824static u64 spufs_decr_status_get(struct spu_context *ctx)
1825{
1826 if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING)
1827 return SPU_DECR_STATUS_RUNNING;
1828 else
1829 return 0;
1830}
1831DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get,
1832 spufs_decr_status_set, "0x%llx\n",
1833 SPU_ATTR_ACQUIRE_SAVED);
1834
1835static int spufs_event_mask_set(void *data, u64 val)
1836{
1837 struct spu_context *ctx = data;
1838 struct spu_lscsa *lscsa = ctx->csa.lscsa;
1839 int ret;
1840
1841 ret = spu_acquire_saved(ctx);
1842 if (ret)
1843 return ret;
1844 lscsa->event_mask.slot[0] = (u32) val;
1845 spu_release_saved(ctx);
1846
1847 return 0;
1848}
1849
1850static u64 spufs_event_mask_get(struct spu_context *ctx)
1851{
1852 struct spu_lscsa *lscsa = ctx->csa.lscsa;
1853 return lscsa->event_mask.slot[0];
1854}
1855
1856DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get,
1857 spufs_event_mask_set, "0x%llx\n",
1858 SPU_ATTR_ACQUIRE_SAVED);
1859
1860static u64 spufs_event_status_get(struct spu_context *ctx)
1861{
1862 struct spu_state *state = &ctx->csa;
1863 u64 stat;
1864 stat = state->spu_chnlcnt_RW[0];
1865 if (stat)
1866 return state->spu_chnldata_RW[0];
1867 return 0;
1868}
1869DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get,
1870 NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED)
1871
1872static int spufs_srr0_set(void *data, u64 val)
1873{
1874 struct spu_context *ctx = data;
1875 struct spu_lscsa *lscsa = ctx->csa.lscsa;
1876 int ret;
1877
1878 ret = spu_acquire_saved(ctx);
1879 if (ret)
1880 return ret;
1881 lscsa->srr0.slot[0] = (u32) val;
1882 spu_release_saved(ctx);
1883
1884 return 0;
1885}
1886
1887static u64 spufs_srr0_get(struct spu_context *ctx)
1888{
1889 struct spu_lscsa *lscsa = ctx->csa.lscsa;
1890 return lscsa->srr0.slot[0];
1891}
1892DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set,
1893 "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED)
1894
1895static u64 spufs_id_get(struct spu_context *ctx)
1896{
1897 u64 num;
1898
1899 if (ctx->state == SPU_STATE_RUNNABLE)
1900 num = ctx->spu->number;
1901 else
1902 num = (unsigned int)-1;
1903
1904 return num;
1905}
1906DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n",
1907 SPU_ATTR_ACQUIRE)
1908
1909static u64 spufs_object_id_get(struct spu_context *ctx)
1910{
1911
1912 return ctx->object_id;
1913}
1914
1915static int spufs_object_id_set(void *data, u64 id)
1916{
1917 struct spu_context *ctx = data;
1918 ctx->object_id = id;
1919
1920 return 0;
1921}
1922
1923DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get,
1924 spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE);
1925
1926static u64 spufs_lslr_get(struct spu_context *ctx)
1927{
1928 return ctx->csa.priv2.spu_lslr_RW;
1929}
1930DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n",
1931 SPU_ATTR_ACQUIRE_SAVED);
1932
1933static int spufs_info_open(struct inode *inode, struct file *file)
1934{
1935 struct spufs_inode_info *i = SPUFS_I(inode);
1936 struct spu_context *ctx = i->i_ctx;
1937 file->private_data = ctx;
1938 return 0;
1939}
1940
1941static int spufs_caps_show(struct seq_file *s, void *private)
1942{
1943 struct spu_context *ctx = s->private;
1944
1945 if (!(ctx->flags & SPU_CREATE_NOSCHED))
1946 seq_puts(s, "sched\n");
1947 if (!(ctx->flags & SPU_CREATE_ISOLATE))
1948 seq_puts(s, "step\n");
1949 return 0;
1950}
1951
1952static int spufs_caps_open(struct inode *inode, struct file *file)
1953{
1954 return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx);
1955}
1956
1957static const struct file_operations spufs_caps_fops = {
1958 .open = spufs_caps_open,
1959 .read = seq_read,
1960 .llseek = seq_lseek,
1961 .release = single_release,
1962};
1963
1964static ssize_t __spufs_mbox_info_read(struct spu_context *ctx,
1965 char __user *buf, size_t len, loff_t *pos)
1966{
1967 u32 data;
1968
1969
1970 if (!(ctx->csa.prob.mb_stat_R & 0x0000ff))
1971 return 0;
1972
1973 data = ctx->csa.prob.pu_mb_R;
1974
1975 return simple_read_from_buffer(buf, len, pos, &data, sizeof data);
1976}
1977
1978static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
1979 size_t len, loff_t *pos)
1980{
1981 int ret;
1982 struct spu_context *ctx = file->private_data;
1983
1984 if (!access_ok(buf, len))
1985 return -EFAULT;
1986
1987 ret = spu_acquire_saved(ctx);
1988 if (ret)
1989 return ret;
1990 spin_lock(&ctx->csa.register_lock);
1991 ret = __spufs_mbox_info_read(ctx, buf, len, pos);
1992 spin_unlock(&ctx->csa.register_lock);
1993 spu_release_saved(ctx);
1994
1995 return ret;
1996}
1997
1998static const struct file_operations spufs_mbox_info_fops = {
1999 .open = spufs_info_open,
2000 .read = spufs_mbox_info_read,
2001 .llseek = generic_file_llseek,
2002};
2003
2004static ssize_t __spufs_ibox_info_read(struct spu_context *ctx,
2005 char __user *buf, size_t len, loff_t *pos)
2006{
2007 u32 data;
2008
2009
2010 if (!(ctx->csa.prob.mb_stat_R & 0xff0000))
2011 return 0;
2012
2013 data = ctx->csa.priv2.puint_mb_R;
2014
2015 return simple_read_from_buffer(buf, len, pos, &data, sizeof data);
2016}
2017
2018static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
2019 size_t len, loff_t *pos)
2020{
2021 struct spu_context *ctx = file->private_data;
2022 int ret;
2023
2024 if (!access_ok(buf, len))
2025 return -EFAULT;
2026
2027 ret = spu_acquire_saved(ctx);
2028 if (ret)
2029 return ret;
2030 spin_lock(&ctx->csa.register_lock);
2031 ret = __spufs_ibox_info_read(ctx, buf, len, pos);
2032 spin_unlock(&ctx->csa.register_lock);
2033 spu_release_saved(ctx);
2034
2035 return ret;
2036}
2037
2038static const struct file_operations spufs_ibox_info_fops = {
2039 .open = spufs_info_open,
2040 .read = spufs_ibox_info_read,
2041 .llseek = generic_file_llseek,
2042};
2043
2044static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
2045 char __user *buf, size_t len, loff_t *pos)
2046{
2047 int i, cnt;
2048 u32 data[4];
2049 u32 wbox_stat;
2050
2051 wbox_stat = ctx->csa.prob.mb_stat_R;
2052 cnt = 4 - ((wbox_stat & 0x00ff00) >> 8);
2053 for (i = 0; i < cnt; i++) {
2054 data[i] = ctx->csa.spu_mailbox_data[i];
2055 }
2056
2057 return simple_read_from_buffer(buf, len, pos, &data,
2058 cnt * sizeof(u32));
2059}
2060
2061static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
2062 size_t len, loff_t *pos)
2063{
2064 struct spu_context *ctx = file->private_data;
2065 int ret;
2066
2067 if (!access_ok(buf, len))
2068 return -EFAULT;
2069
2070 ret = spu_acquire_saved(ctx);
2071 if (ret)
2072 return ret;
2073 spin_lock(&ctx->csa.register_lock);
2074 ret = __spufs_wbox_info_read(ctx, buf, len, pos);
2075 spin_unlock(&ctx->csa.register_lock);
2076 spu_release_saved(ctx);
2077
2078 return ret;
2079}
2080
2081static const struct file_operations spufs_wbox_info_fops = {
2082 .open = spufs_info_open,
2083 .read = spufs_wbox_info_read,
2084 .llseek = generic_file_llseek,
2085};
2086
2087static ssize_t __spufs_dma_info_read(struct spu_context *ctx,
2088 char __user *buf, size_t len, loff_t *pos)
2089{
2090 struct spu_dma_info info;
2091 struct mfc_cq_sr *qp, *spuqp;
2092 int i;
2093
2094 info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
2095 info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
2096 info.dma_info_status = ctx->csa.spu_chnldata_RW[24];
2097 info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
2098 info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
2099 for (i = 0; i < 16; i++) {
2100 qp = &info.dma_info_command_data[i];
2101 spuqp = &ctx->csa.priv2.spuq[i];
2102
2103 qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW;
2104 qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW;
2105 qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW;
2106 qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW;
2107 }
2108
2109 return simple_read_from_buffer(buf, len, pos, &info,
2110 sizeof info);
2111}
2112
2113static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
2114 size_t len, loff_t *pos)
2115{
2116 struct spu_context *ctx = file->private_data;
2117 int ret;
2118
2119 if (!access_ok(buf, len))
2120 return -EFAULT;
2121
2122 ret = spu_acquire_saved(ctx);
2123 if (ret)
2124 return ret;
2125 spin_lock(&ctx->csa.register_lock);
2126 ret = __spufs_dma_info_read(ctx, buf, len, pos);
2127 spin_unlock(&ctx->csa.register_lock);
2128 spu_release_saved(ctx);
2129
2130 return ret;
2131}
2132
2133static const struct file_operations spufs_dma_info_fops = {
2134 .open = spufs_info_open,
2135 .read = spufs_dma_info_read,
2136 .llseek = no_llseek,
2137};
2138
2139static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx,
2140 char __user *buf, size_t len, loff_t *pos)
2141{
2142 struct spu_proxydma_info info;
2143 struct mfc_cq_sr *qp, *puqp;
2144 int ret = sizeof info;
2145 int i;
2146
2147 if (len < ret)
2148 return -EINVAL;
2149
2150 if (!access_ok(buf, len))
2151 return -EFAULT;
2152
2153 info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
2154 info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
2155 info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
2156 for (i = 0; i < 8; i++) {
2157 qp = &info.proxydma_info_command_data[i];
2158 puqp = &ctx->csa.priv2.puq[i];
2159
2160 qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
2161 qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
2162 qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
2163 qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
2164 }
2165
2166 return simple_read_from_buffer(buf, len, pos, &info,
2167 sizeof info);
2168}
2169
2170static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf,
2171 size_t len, loff_t *pos)
2172{
2173 struct spu_context *ctx = file->private_data;
2174 int ret;
2175
2176 ret = spu_acquire_saved(ctx);
2177 if (ret)
2178 return ret;
2179 spin_lock(&ctx->csa.register_lock);
2180 ret = __spufs_proxydma_info_read(ctx, buf, len, pos);
2181 spin_unlock(&ctx->csa.register_lock);
2182 spu_release_saved(ctx);
2183
2184 return ret;
2185}
2186
2187static const struct file_operations spufs_proxydma_info_fops = {
2188 .open = spufs_info_open,
2189 .read = spufs_proxydma_info_read,
2190 .llseek = no_llseek,
2191};
2192
2193static int spufs_show_tid(struct seq_file *s, void *private)
2194{
2195 struct spu_context *ctx = s->private;
2196
2197 seq_printf(s, "%d\n", ctx->tid);
2198 return 0;
2199}
2200
2201static int spufs_tid_open(struct inode *inode, struct file *file)
2202{
2203 return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx);
2204}
2205
2206static const struct file_operations spufs_tid_fops = {
2207 .open = spufs_tid_open,
2208 .read = seq_read,
2209 .llseek = seq_lseek,
2210 .release = single_release,
2211};
2212
2213static const char *ctx_state_names[] = {
2214 "user", "system", "iowait", "loaded"
2215};
2216
2217static unsigned long long spufs_acct_time(struct spu_context *ctx,
2218 enum spu_utilization_state state)
2219{
2220 unsigned long long time = ctx->stats.times[state];
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231 if (ctx->spu && ctx->stats.util_state == state) {
2232 time += ktime_get_ns() - ctx->stats.tstamp;
2233 }
2234
2235 return time / NSEC_PER_MSEC;
2236}
2237
2238static unsigned long long spufs_slb_flts(struct spu_context *ctx)
2239{
2240 unsigned long long slb_flts = ctx->stats.slb_flt;
2241
2242 if (ctx->state == SPU_STATE_RUNNABLE) {
2243 slb_flts += (ctx->spu->stats.slb_flt -
2244 ctx->stats.slb_flt_base);
2245 }
2246
2247 return slb_flts;
2248}
2249
2250static unsigned long long spufs_class2_intrs(struct spu_context *ctx)
2251{
2252 unsigned long long class2_intrs = ctx->stats.class2_intr;
2253
2254 if (ctx->state == SPU_STATE_RUNNABLE) {
2255 class2_intrs += (ctx->spu->stats.class2_intr -
2256 ctx->stats.class2_intr_base);
2257 }
2258
2259 return class2_intrs;
2260}
2261
2262
2263static int spufs_show_stat(struct seq_file *s, void *private)
2264{
2265 struct spu_context *ctx = s->private;
2266 int ret;
2267
2268 ret = spu_acquire(ctx);
2269 if (ret)
2270 return ret;
2271
2272 seq_printf(s, "%s %llu %llu %llu %llu "
2273 "%llu %llu %llu %llu %llu %llu %llu %llu\n",
2274 ctx_state_names[ctx->stats.util_state],
2275 spufs_acct_time(ctx, SPU_UTIL_USER),
2276 spufs_acct_time(ctx, SPU_UTIL_SYSTEM),
2277 spufs_acct_time(ctx, SPU_UTIL_IOWAIT),
2278 spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED),
2279 ctx->stats.vol_ctx_switch,
2280 ctx->stats.invol_ctx_switch,
2281 spufs_slb_flts(ctx),
2282 ctx->stats.hash_flt,
2283 ctx->stats.min_flt,
2284 ctx->stats.maj_flt,
2285 spufs_class2_intrs(ctx),
2286 ctx->stats.libassist);
2287 spu_release(ctx);
2288 return 0;
2289}
2290
2291static int spufs_stat_open(struct inode *inode, struct file *file)
2292{
2293 return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx);
2294}
2295
2296static const struct file_operations spufs_stat_fops = {
2297 .open = spufs_stat_open,
2298 .read = seq_read,
2299 .llseek = seq_lseek,
2300 .release = single_release,
2301};
2302
2303static inline int spufs_switch_log_used(struct spu_context *ctx)
2304{
2305 return (ctx->switch_log->head - ctx->switch_log->tail) %
2306 SWITCH_LOG_BUFSIZE;
2307}
2308
2309static inline int spufs_switch_log_avail(struct spu_context *ctx)
2310{
2311 return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx);
2312}
2313
2314static int spufs_switch_log_open(struct inode *inode, struct file *file)
2315{
2316 struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
2317 int rc;
2318
2319 rc = spu_acquire(ctx);
2320 if (rc)
2321 return rc;
2322
2323 if (ctx->switch_log) {
2324 rc = -EBUSY;
2325 goto out;
2326 }
2327
2328 ctx->switch_log = kmalloc(struct_size(ctx->switch_log, log,
2329 SWITCH_LOG_BUFSIZE), GFP_KERNEL);
2330
2331 if (!ctx->switch_log) {
2332 rc = -ENOMEM;
2333 goto out;
2334 }
2335
2336 ctx->switch_log->head = ctx->switch_log->tail = 0;
2337 init_waitqueue_head(&ctx->switch_log->wait);
2338 rc = 0;
2339
2340out:
2341 spu_release(ctx);
2342 return rc;
2343}
2344
2345static int spufs_switch_log_release(struct inode *inode, struct file *file)
2346{
2347 struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
2348 int rc;
2349
2350 rc = spu_acquire(ctx);
2351 if (rc)
2352 return rc;
2353
2354 kfree(ctx->switch_log);
2355 ctx->switch_log = NULL;
2356 spu_release(ctx);
2357
2358 return 0;
2359}
2360
2361static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n)
2362{
2363 struct switch_log_entry *p;
2364
2365 p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE;
2366
2367 return snprintf(tbuf, n, "%llu.%09u %d %u %u %llu\n",
2368 (unsigned long long) p->tstamp.tv_sec,
2369 (unsigned int) p->tstamp.tv_nsec,
2370 p->spu_id,
2371 (unsigned int) p->type,
2372 (unsigned int) p->val,
2373 (unsigned long long) p->timebase);
2374}
2375
2376static ssize_t spufs_switch_log_read(struct file *file, char __user *buf,
2377 size_t len, loff_t *ppos)
2378{
2379 struct inode *inode = file_inode(file);
2380 struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
2381 int error = 0, cnt = 0;
2382
2383 if (!buf)
2384 return -EINVAL;
2385
2386 error = spu_acquire(ctx);
2387 if (error)
2388 return error;
2389
2390 while (cnt < len) {
2391 char tbuf[128];
2392 int width;
2393
2394 if (spufs_switch_log_used(ctx) == 0) {
2395 if (cnt > 0) {
2396
2397
2398 break;
2399
2400 } else if (file->f_flags & O_NONBLOCK) {
2401 error = -EAGAIN;
2402 break;
2403
2404 } else {
2405
2406
2407
2408
2409
2410 error = spufs_wait(ctx->switch_log->wait,
2411 spufs_switch_log_used(ctx) > 0);
2412
2413
2414
2415 if (error)
2416 return error;
2417
2418
2419
2420
2421 if (spufs_switch_log_used(ctx) == 0)
2422 continue;
2423 }
2424 }
2425
2426 width = switch_log_sprint(ctx, tbuf, sizeof(tbuf));
2427 if (width < len)
2428 ctx->switch_log->tail =
2429 (ctx->switch_log->tail + 1) %
2430 SWITCH_LOG_BUFSIZE;
2431 else
2432
2433
2434 break;
2435
2436 error = copy_to_user(buf + cnt, tbuf, width);
2437 if (error)
2438 break;
2439 cnt += width;
2440 }
2441
2442 spu_release(ctx);
2443
2444 return cnt == 0 ? error : cnt;
2445}
2446
2447static __poll_t spufs_switch_log_poll(struct file *file, poll_table *wait)
2448{
2449 struct inode *inode = file_inode(file);
2450 struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
2451 __poll_t mask = 0;
2452 int rc;
2453
2454 poll_wait(file, &ctx->switch_log->wait, wait);
2455
2456 rc = spu_acquire(ctx);
2457 if (rc)
2458 return rc;
2459
2460 if (spufs_switch_log_used(ctx) > 0)
2461 mask |= EPOLLIN;
2462
2463 spu_release(ctx);
2464
2465 return mask;
2466}
2467
2468static const struct file_operations spufs_switch_log_fops = {
2469 .open = spufs_switch_log_open,
2470 .read = spufs_switch_log_read,
2471 .poll = spufs_switch_log_poll,
2472 .release = spufs_switch_log_release,
2473 .llseek = no_llseek,
2474};
2475
2476
2477
2478
2479
2480
2481void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
2482 u32 type, u32 val)
2483{
2484 if (!ctx->switch_log)
2485 return;
2486
2487 if (spufs_switch_log_avail(ctx) > 1) {
2488 struct switch_log_entry *p;
2489
2490 p = ctx->switch_log->log + ctx->switch_log->head;
2491 ktime_get_ts64(&p->tstamp);
2492 p->timebase = get_tb();
2493 p->spu_id = spu ? spu->number : -1;
2494 p->type = type;
2495 p->val = val;
2496
2497 ctx->switch_log->head =
2498 (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE;
2499 }
2500
2501 wake_up(&ctx->switch_log->wait);
2502}
2503
2504static int spufs_show_ctx(struct seq_file *s, void *private)
2505{
2506 struct spu_context *ctx = s->private;
2507 u64 mfc_control_RW;
2508
2509 mutex_lock(&ctx->state_mutex);
2510 if (ctx->spu) {
2511 struct spu *spu = ctx->spu;
2512 struct spu_priv2 __iomem *priv2 = spu->priv2;
2513
2514 spin_lock_irq(&spu->register_lock);
2515 mfc_control_RW = in_be64(&priv2->mfc_control_RW);
2516 spin_unlock_irq(&spu->register_lock);
2517 } else {
2518 struct spu_state *csa = &ctx->csa;
2519
2520 mfc_control_RW = csa->priv2.mfc_control_RW;
2521 }
2522
2523 seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)"
2524 " %c %llx %llx %llx %llx %x %x\n",
2525 ctx->state == SPU_STATE_SAVED ? 'S' : 'R',
2526 ctx->flags,
2527 ctx->sched_flags,
2528 ctx->prio,
2529 ctx->time_slice,
2530 ctx->spu ? ctx->spu->number : -1,
2531 !list_empty(&ctx->rq) ? 'q' : ' ',
2532 ctx->csa.class_0_pending,
2533 ctx->csa.class_0_dar,
2534 ctx->csa.class_1_dsisr,
2535 mfc_control_RW,
2536 ctx->ops->runcntl_read(ctx),
2537 ctx->ops->status_read(ctx));
2538
2539 mutex_unlock(&ctx->state_mutex);
2540
2541 return 0;
2542}
2543
2544static int spufs_ctx_open(struct inode *inode, struct file *file)
2545{
2546 return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx);
2547}
2548
2549static const struct file_operations spufs_ctx_fops = {
2550 .open = spufs_ctx_open,
2551 .read = seq_read,
2552 .llseek = seq_lseek,
2553 .release = single_release,
2554};
2555
2556const struct spufs_tree_descr spufs_dir_contents[] = {
2557 { "capabilities", &spufs_caps_fops, 0444, },
2558 { "mem", &spufs_mem_fops, 0666, LS_SIZE, },
2559 { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), },
2560 { "mbox", &spufs_mbox_fops, 0444, },
2561 { "ibox", &spufs_ibox_fops, 0444, },
2562 { "wbox", &spufs_wbox_fops, 0222, },
2563 { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
2564 { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
2565 { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
2566 { "signal1", &spufs_signal1_fops, 0666, },
2567 { "signal2", &spufs_signal2_fops, 0666, },
2568 { "signal1_type", &spufs_signal1_type, 0666, },
2569 { "signal2_type", &spufs_signal2_type, 0666, },
2570 { "cntl", &spufs_cntl_fops, 0666, },
2571 { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), },
2572 { "lslr", &spufs_lslr_ops, 0444, },
2573 { "mfc", &spufs_mfc_fops, 0666, },
2574 { "mss", &spufs_mss_fops, 0666, },
2575 { "npc", &spufs_npc_ops, 0666, },
2576 { "srr0", &spufs_srr0_ops, 0666, },
2577 { "decr", &spufs_decr_ops, 0666, },
2578 { "decr_status", &spufs_decr_status_ops, 0666, },
2579 { "event_mask", &spufs_event_mask_ops, 0666, },
2580 { "event_status", &spufs_event_status_ops, 0444, },
2581 { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
2582 { "phys-id", &spufs_id_ops, 0666, },
2583 { "object-id", &spufs_object_id_ops, 0666, },
2584 { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), },
2585 { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), },
2586 { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), },
2587 { "dma_info", &spufs_dma_info_fops, 0444,
2588 sizeof(struct spu_dma_info), },
2589 { "proxydma_info", &spufs_proxydma_info_fops, 0444,
2590 sizeof(struct spu_proxydma_info)},
2591 { "tid", &spufs_tid_fops, 0444, },
2592 { "stat", &spufs_stat_fops, 0444, },
2593 { "switch_log", &spufs_switch_log_fops, 0444 },
2594 {},
2595};
2596
2597const struct spufs_tree_descr spufs_dir_nosched_contents[] = {
2598 { "capabilities", &spufs_caps_fops, 0444, },
2599 { "mem", &spufs_mem_fops, 0666, LS_SIZE, },
2600 { "mbox", &spufs_mbox_fops, 0444, },
2601 { "ibox", &spufs_ibox_fops, 0444, },
2602 { "wbox", &spufs_wbox_fops, 0222, },
2603 { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
2604 { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
2605 { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
2606 { "signal1", &spufs_signal1_nosched_fops, 0222, },
2607 { "signal2", &spufs_signal2_nosched_fops, 0222, },
2608 { "signal1_type", &spufs_signal1_type, 0666, },
2609 { "signal2_type", &spufs_signal2_type, 0666, },
2610 { "mss", &spufs_mss_fops, 0666, },
2611 { "mfc", &spufs_mfc_fops, 0666, },
2612 { "cntl", &spufs_cntl_fops, 0666, },
2613 { "npc", &spufs_npc_ops, 0666, },
2614 { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
2615 { "phys-id", &spufs_id_ops, 0666, },
2616 { "object-id", &spufs_object_id_ops, 0666, },
2617 { "tid", &spufs_tid_fops, 0444, },
2618 { "stat", &spufs_stat_fops, 0444, },
2619 {},
2620};
2621
2622const struct spufs_tree_descr spufs_dir_debug_contents[] = {
2623 { ".ctx", &spufs_ctx_fops, 0444, },
2624 {},
2625};
2626
2627const struct spufs_coredump_reader spufs_coredump_read[] = {
2628 { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])},
2629 { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) },
2630 { "lslr", NULL, spufs_lslr_get, 19 },
2631 { "decr", NULL, spufs_decr_get, 19 },
2632 { "decr_status", NULL, spufs_decr_status_get, 19 },
2633 { "mem", __spufs_mem_read, NULL, LS_SIZE, },
2634 { "signal1", __spufs_signal1_read, NULL, sizeof(u32) },
2635 { "signal1_type", NULL, spufs_signal1_type_get, 19 },
2636 { "signal2", __spufs_signal2_read, NULL, sizeof(u32) },
2637 { "signal2_type", NULL, spufs_signal2_type_get, 19 },
2638 { "event_mask", NULL, spufs_event_mask_get, 19 },
2639 { "event_status", NULL, spufs_event_status_get, 19 },
2640 { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) },
2641 { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) },
2642 { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)},
2643 { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)},
2644 { "proxydma_info", __spufs_proxydma_info_read,
2645 NULL, sizeof(struct spu_proxydma_info)},
2646 { "object-id", NULL, spufs_object_id_get, 19 },
2647 { "npc", NULL, spufs_npc_get, 19 },
2648 { NULL },
2649};
2650