1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * SPU file system -- file contents
5 * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
7 * Author: Arnd Bergmann <arndb@de.ibm.com>
12 #include <linux/coredump.h>
14 #include <linux/ioctl.h>
15 #include <linux/export.h>
16 #include <linux/pagemap.h>
17 #include <linux/poll.h>
18 #include <linux/ptrace.h>
19 #include <linux/seq_file.h>
20 #include <linux/slab.h>
25 #include <asm/spu_info.h>
26 #include <linux/uaccess.h>
31 #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000)
33 /* Simple attribute files */
35 int (*get
)(void *, u64
*);
36 int (*set
)(void *, u64
);
37 char get_buf
[24]; /* enough to store a u64 and "\n\0" */
40 const char *fmt
; /* format for read operation */
41 struct mutex mutex
; /* protects access to these buffers */
44 static int spufs_attr_open(struct inode
*inode
, struct file
*file
,
45 int (*get
)(void *, u64
*), int (*set
)(void *, u64
),
48 struct spufs_attr
*attr
;
50 attr
= kmalloc(sizeof(*attr
), GFP_KERNEL
);
56 attr
->data
= inode
->i_private
;
58 mutex_init(&attr
->mutex
);
59 file
->private_data
= attr
;
61 return nonseekable_open(inode
, file
);
64 static int spufs_attr_release(struct inode
*inode
, struct file
*file
)
66 kfree(file
->private_data
);
70 static ssize_t
spufs_attr_read(struct file
*file
, char __user
*buf
,
71 size_t len
, loff_t
*ppos
)
73 struct spufs_attr
*attr
;
77 attr
= file
->private_data
;
81 ret
= mutex_lock_interruptible(&attr
->mutex
);
85 if (*ppos
) { /* continued read */
86 size
= strlen(attr
->get_buf
);
87 } else { /* first read */
89 ret
= attr
->get(attr
->data
, &val
);
93 size
= scnprintf(attr
->get_buf
, sizeof(attr
->get_buf
),
94 attr
->fmt
, (unsigned long long)val
);
97 ret
= simple_read_from_buffer(buf
, len
, ppos
, attr
->get_buf
, size
);
99 mutex_unlock(&attr
->mutex
);
103 static ssize_t
spufs_attr_write(struct file
*file
, const char __user
*buf
,
104 size_t len
, loff_t
*ppos
)
106 struct spufs_attr
*attr
;
111 attr
= file
->private_data
;
115 ret
= mutex_lock_interruptible(&attr
->mutex
);
120 size
= min(sizeof(attr
->set_buf
) - 1, len
);
121 if (copy_from_user(attr
->set_buf
, buf
, size
))
124 ret
= len
; /* claim we got the whole input */
125 attr
->set_buf
[size
] = '\0';
126 val
= simple_strtol(attr
->set_buf
, NULL
, 0);
127 attr
->set(attr
->data
, val
);
129 mutex_unlock(&attr
->mutex
);
133 static ssize_t
spufs_dump_emit(struct coredump_params
*cprm
, void *buf
,
136 if (!dump_emit(cprm
, buf
, size
))
141 #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \
142 static int __fops ## _open(struct inode *inode, struct file *file) \
144 __simple_attr_check_format(__fmt, 0ull); \
145 return spufs_attr_open(inode, file, __get, __set, __fmt); \
147 static const struct file_operations __fops = { \
148 .open = __fops ## _open, \
149 .release = spufs_attr_release, \
150 .read = spufs_attr_read, \
151 .write = spufs_attr_write, \
152 .llseek = generic_file_llseek, \
157 spufs_mem_open(struct inode
*inode
, struct file
*file
)
159 struct spufs_inode_info
*i
= SPUFS_I(inode
);
160 struct spu_context
*ctx
= i
->i_ctx
;
162 mutex_lock(&ctx
->mapping_lock
);
163 file
->private_data
= ctx
;
165 ctx
->local_store
= inode
->i_mapping
;
166 mutex_unlock(&ctx
->mapping_lock
);
171 spufs_mem_release(struct inode
*inode
, struct file
*file
)
173 struct spufs_inode_info
*i
= SPUFS_I(inode
);
174 struct spu_context
*ctx
= i
->i_ctx
;
176 mutex_lock(&ctx
->mapping_lock
);
178 ctx
->local_store
= NULL
;
179 mutex_unlock(&ctx
->mapping_lock
);
184 spufs_mem_dump(struct spu_context
*ctx
, struct coredump_params
*cprm
)
186 return spufs_dump_emit(cprm
, ctx
->ops
->get_ls(ctx
), LS_SIZE
);
190 spufs_mem_read(struct file
*file
, char __user
*buffer
,
191 size_t size
, loff_t
*pos
)
193 struct spu_context
*ctx
= file
->private_data
;
196 ret
= spu_acquire(ctx
);
199 ret
= simple_read_from_buffer(buffer
, size
, pos
, ctx
->ops
->get_ls(ctx
),
207 spufs_mem_write(struct file
*file
, const char __user
*buffer
,
208 size_t size
, loff_t
*ppos
)
210 struct spu_context
*ctx
= file
->private_data
;
218 ret
= spu_acquire(ctx
);
222 local_store
= ctx
->ops
->get_ls(ctx
);
223 size
= simple_write_to_buffer(local_store
, LS_SIZE
, ppos
, buffer
, size
);
230 spufs_mem_mmap_fault(struct vm_fault
*vmf
)
232 struct vm_area_struct
*vma
= vmf
->vma
;
233 struct spu_context
*ctx
= vma
->vm_file
->private_data
;
234 unsigned long pfn
, offset
;
237 offset
= vmf
->pgoff
<< PAGE_SHIFT
;
238 if (offset
>= LS_SIZE
)
239 return VM_FAULT_SIGBUS
;
241 pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n",
242 vmf
->address
, offset
);
244 if (spu_acquire(ctx
))
245 return VM_FAULT_NOPAGE
;
247 if (ctx
->state
== SPU_STATE_SAVED
) {
248 vma
->vm_page_prot
= pgprot_cached(vma
->vm_page_prot
);
249 pfn
= vmalloc_to_pfn(ctx
->csa
.lscsa
->ls
+ offset
);
251 vma
->vm_page_prot
= pgprot_noncached_wc(vma
->vm_page_prot
);
252 pfn
= (ctx
->spu
->local_store_phys
+ offset
) >> PAGE_SHIFT
;
254 ret
= vmf_insert_pfn(vma
, vmf
->address
, pfn
);
261 static int spufs_mem_mmap_access(struct vm_area_struct
*vma
,
262 unsigned long address
,
263 void *buf
, int len
, int write
)
265 struct spu_context
*ctx
= vma
->vm_file
->private_data
;
266 unsigned long offset
= address
- vma
->vm_start
;
269 if (write
&& !(vma
->vm_flags
& VM_WRITE
))
271 if (spu_acquire(ctx
))
273 if ((offset
+ len
) > vma
->vm_end
)
274 len
= vma
->vm_end
- offset
;
275 local_store
= ctx
->ops
->get_ls(ctx
);
277 memcpy_toio(local_store
+ offset
, buf
, len
);
279 memcpy_fromio(buf
, local_store
+ offset
, len
);
284 static const struct vm_operations_struct spufs_mem_mmap_vmops
= {
285 .fault
= spufs_mem_mmap_fault
,
286 .access
= spufs_mem_mmap_access
,
289 static int spufs_mem_mmap(struct file
*file
, struct vm_area_struct
*vma
)
291 if (!(vma
->vm_flags
& VM_SHARED
))
294 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
295 vma
->vm_page_prot
= pgprot_noncached_wc(vma
->vm_page_prot
);
297 vma
->vm_ops
= &spufs_mem_mmap_vmops
;
301 static const struct file_operations spufs_mem_fops
= {
302 .open
= spufs_mem_open
,
303 .release
= spufs_mem_release
,
304 .read
= spufs_mem_read
,
305 .write
= spufs_mem_write
,
306 .llseek
= generic_file_llseek
,
307 .mmap
= spufs_mem_mmap
,
310 static vm_fault_t
spufs_ps_fault(struct vm_fault
*vmf
,
311 unsigned long ps_offs
,
312 unsigned long ps_size
)
314 struct spu_context
*ctx
= vmf
->vma
->vm_file
->private_data
;
315 unsigned long area
, offset
= vmf
->pgoff
<< PAGE_SHIFT
;
317 vm_fault_t ret
= VM_FAULT_NOPAGE
;
319 spu_context_nospu_trace(spufs_ps_fault__enter
, ctx
);
321 if (offset
>= ps_size
)
322 return VM_FAULT_SIGBUS
;
324 if (fatal_signal_pending(current
))
325 return VM_FAULT_SIGBUS
;
328 * Because we release the mmap_lock, the context may be destroyed while
329 * we're in spu_wait. Grab an extra reference so it isn't destroyed
332 get_spu_context(ctx
);
335 * We have to wait for context to be loaded before we have
336 * pages to hand out to the user, but we don't want to wait
337 * with the mmap_lock held.
338 * It is possible to drop the mmap_lock here, but then we need
339 * to return VM_FAULT_NOPAGE because the mappings may have
342 if (spu_acquire(ctx
))
345 if (ctx
->state
== SPU_STATE_SAVED
) {
346 mmap_read_unlock(current
->mm
);
347 spu_context_nospu_trace(spufs_ps_fault__sleep
, ctx
);
348 err
= spufs_wait(ctx
->run_wq
, ctx
->state
== SPU_STATE_RUNNABLE
);
349 spu_context_trace(spufs_ps_fault__wake
, ctx
, ctx
->spu
);
350 mmap_read_lock(current
->mm
);
352 area
= ctx
->spu
->problem_phys
+ ps_offs
;
353 ret
= vmf_insert_pfn(vmf
->vma
, vmf
->address
,
354 (area
+ offset
) >> PAGE_SHIFT
);
355 spu_context_trace(spufs_ps_fault__insert
, ctx
, ctx
->spu
);
362 put_spu_context(ctx
);
367 static vm_fault_t
spufs_cntl_mmap_fault(struct vm_fault
*vmf
)
369 return spufs_ps_fault(vmf
, 0x4000, SPUFS_CNTL_MAP_SIZE
);
372 static const struct vm_operations_struct spufs_cntl_mmap_vmops
= {
373 .fault
= spufs_cntl_mmap_fault
,
377 * mmap support for problem state control area [0x4000 - 0x4fff].
379 static int spufs_cntl_mmap(struct file
*file
, struct vm_area_struct
*vma
)
381 if (!(vma
->vm_flags
& VM_SHARED
))
384 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
385 vma
->vm_page_prot
= pgprot_noncached(vma
->vm_page_prot
);
387 vma
->vm_ops
= &spufs_cntl_mmap_vmops
;
390 #else /* SPUFS_MMAP_4K */
391 #define spufs_cntl_mmap NULL
392 #endif /* !SPUFS_MMAP_4K */
394 static int spufs_cntl_get(void *data
, u64
*val
)
396 struct spu_context
*ctx
= data
;
399 ret
= spu_acquire(ctx
);
402 *val
= ctx
->ops
->status_read(ctx
);
408 static int spufs_cntl_set(void *data
, u64 val
)
410 struct spu_context
*ctx
= data
;
413 ret
= spu_acquire(ctx
);
416 ctx
->ops
->runcntl_write(ctx
, val
);
422 static int spufs_cntl_open(struct inode
*inode
, struct file
*file
)
424 struct spufs_inode_info
*i
= SPUFS_I(inode
);
425 struct spu_context
*ctx
= i
->i_ctx
;
427 mutex_lock(&ctx
->mapping_lock
);
428 file
->private_data
= ctx
;
430 ctx
->cntl
= inode
->i_mapping
;
431 mutex_unlock(&ctx
->mapping_lock
);
432 return simple_attr_open(inode
, file
, spufs_cntl_get
,
433 spufs_cntl_set
, "0x%08lx");
437 spufs_cntl_release(struct inode
*inode
, struct file
*file
)
439 struct spufs_inode_info
*i
= SPUFS_I(inode
);
440 struct spu_context
*ctx
= i
->i_ctx
;
442 simple_attr_release(inode
, file
);
444 mutex_lock(&ctx
->mapping_lock
);
447 mutex_unlock(&ctx
->mapping_lock
);
451 static const struct file_operations spufs_cntl_fops
= {
452 .open
= spufs_cntl_open
,
453 .release
= spufs_cntl_release
,
454 .read
= simple_attr_read
,
455 .write
= simple_attr_write
,
457 .mmap
= spufs_cntl_mmap
,
461 spufs_regs_open(struct inode
*inode
, struct file
*file
)
463 struct spufs_inode_info
*i
= SPUFS_I(inode
);
464 file
->private_data
= i
->i_ctx
;
469 spufs_regs_dump(struct spu_context
*ctx
, struct coredump_params
*cprm
)
471 return spufs_dump_emit(cprm
, ctx
->csa
.lscsa
->gprs
,
472 sizeof(ctx
->csa
.lscsa
->gprs
));
476 spufs_regs_read(struct file
*file
, char __user
*buffer
,
477 size_t size
, loff_t
*pos
)
480 struct spu_context
*ctx
= file
->private_data
;
482 /* pre-check for file position: if we'd return EOF, there's no point
483 * causing a deschedule */
484 if (*pos
>= sizeof(ctx
->csa
.lscsa
->gprs
))
487 ret
= spu_acquire_saved(ctx
);
490 ret
= simple_read_from_buffer(buffer
, size
, pos
, ctx
->csa
.lscsa
->gprs
,
491 sizeof(ctx
->csa
.lscsa
->gprs
));
492 spu_release_saved(ctx
);
497 spufs_regs_write(struct file
*file
, const char __user
*buffer
,
498 size_t size
, loff_t
*pos
)
500 struct spu_context
*ctx
= file
->private_data
;
501 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
504 if (*pos
>= sizeof(lscsa
->gprs
))
507 ret
= spu_acquire_saved(ctx
);
511 size
= simple_write_to_buffer(lscsa
->gprs
, sizeof(lscsa
->gprs
), pos
,
514 spu_release_saved(ctx
);
518 static const struct file_operations spufs_regs_fops
= {
519 .open
= spufs_regs_open
,
520 .read
= spufs_regs_read
,
521 .write
= spufs_regs_write
,
522 .llseek
= generic_file_llseek
,
526 spufs_fpcr_dump(struct spu_context
*ctx
, struct coredump_params
*cprm
)
528 return spufs_dump_emit(cprm
, &ctx
->csa
.lscsa
->fpcr
,
529 sizeof(ctx
->csa
.lscsa
->fpcr
));
533 spufs_fpcr_read(struct file
*file
, char __user
* buffer
,
534 size_t size
, loff_t
* pos
)
537 struct spu_context
*ctx
= file
->private_data
;
539 ret
= spu_acquire_saved(ctx
);
542 ret
= simple_read_from_buffer(buffer
, size
, pos
, &ctx
->csa
.lscsa
->fpcr
,
543 sizeof(ctx
->csa
.lscsa
->fpcr
));
544 spu_release_saved(ctx
);
549 spufs_fpcr_write(struct file
*file
, const char __user
* buffer
,
550 size_t size
, loff_t
* pos
)
552 struct spu_context
*ctx
= file
->private_data
;
553 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
556 if (*pos
>= sizeof(lscsa
->fpcr
))
559 ret
= spu_acquire_saved(ctx
);
563 size
= simple_write_to_buffer(&lscsa
->fpcr
, sizeof(lscsa
->fpcr
), pos
,
566 spu_release_saved(ctx
);
570 static const struct file_operations spufs_fpcr_fops
= {
571 .open
= spufs_regs_open
,
572 .read
= spufs_fpcr_read
,
573 .write
= spufs_fpcr_write
,
574 .llseek
= generic_file_llseek
,
577 /* generic open function for all pipe-like files */
578 static int spufs_pipe_open(struct inode
*inode
, struct file
*file
)
580 struct spufs_inode_info
*i
= SPUFS_I(inode
);
581 file
->private_data
= i
->i_ctx
;
583 return stream_open(inode
, file
);
587 * Read as many bytes from the mailbox as possible, until
588 * one of the conditions becomes true:
590 * - no more data available in the mailbox
591 * - end of the user provided buffer
592 * - end of the mapped area
594 static ssize_t
spufs_mbox_read(struct file
*file
, char __user
*buf
,
595 size_t len
, loff_t
*pos
)
597 struct spu_context
*ctx
= file
->private_data
;
598 u32 mbox_data
, __user
*udata
= (void __user
*)buf
;
604 count
= spu_acquire(ctx
);
608 for (count
= 0; (count
+ 4) <= len
; count
+= 4, udata
++) {
610 ret
= ctx
->ops
->mbox_read(ctx
, &mbox_data
);
615 * at the end of the mapped area, we can fault
616 * but still need to return the data we have
617 * read successfully so far.
619 ret
= put_user(mbox_data
, udata
);
634 static const struct file_operations spufs_mbox_fops
= {
635 .open
= spufs_pipe_open
,
636 .read
= spufs_mbox_read
,
640 static ssize_t
spufs_mbox_stat_read(struct file
*file
, char __user
*buf
,
641 size_t len
, loff_t
*pos
)
643 struct spu_context
*ctx
= file
->private_data
;
650 ret
= spu_acquire(ctx
);
654 mbox_stat
= ctx
->ops
->mbox_stat_read(ctx
) & 0xff;
658 if (copy_to_user(buf
, &mbox_stat
, sizeof mbox_stat
))
664 static const struct file_operations spufs_mbox_stat_fops
= {
665 .open
= spufs_pipe_open
,
666 .read
= spufs_mbox_stat_read
,
670 /* low-level ibox access function */
671 size_t spu_ibox_read(struct spu_context
*ctx
, u32
*data
)
673 return ctx
->ops
->ibox_read(ctx
, data
);
676 /* interrupt-level ibox callback function. */
677 void spufs_ibox_callback(struct spu
*spu
)
679 struct spu_context
*ctx
= spu
->ctx
;
682 wake_up_all(&ctx
->ibox_wq
);
686 * Read as many bytes from the interrupt mailbox as possible, until
687 * one of the conditions becomes true:
689 * - no more data available in the mailbox
690 * - end of the user provided buffer
691 * - end of the mapped area
693 * If the file is opened without O_NONBLOCK, we wait here until
694 * any data is available, but return when we have been able to
697 static ssize_t
spufs_ibox_read(struct file
*file
, char __user
*buf
,
698 size_t len
, loff_t
*pos
)
700 struct spu_context
*ctx
= file
->private_data
;
701 u32 ibox_data
, __user
*udata
= (void __user
*)buf
;
707 count
= spu_acquire(ctx
);
711 /* wait only for the first element */
713 if (file
->f_flags
& O_NONBLOCK
) {
714 if (!spu_ibox_read(ctx
, &ibox_data
)) {
719 count
= spufs_wait(ctx
->ibox_wq
, spu_ibox_read(ctx
, &ibox_data
));
724 /* if we can't write at all, return -EFAULT */
725 count
= put_user(ibox_data
, udata
);
729 for (count
= 4, udata
++; (count
+ 4) <= len
; count
+= 4, udata
++) {
731 ret
= ctx
->ops
->ibox_read(ctx
, &ibox_data
);
735 * at the end of the mapped area, we can fault
736 * but still need to return the data we have
737 * read successfully so far.
739 ret
= put_user(ibox_data
, udata
);
750 static __poll_t
spufs_ibox_poll(struct file
*file
, poll_table
*wait
)
752 struct spu_context
*ctx
= file
->private_data
;
755 poll_wait(file
, &ctx
->ibox_wq
, wait
);
758 * For now keep this uninterruptible and also ignore the rule
759 * that poll should not sleep. Will be fixed later.
761 mutex_lock(&ctx
->state_mutex
);
762 mask
= ctx
->ops
->mbox_stat_poll(ctx
, EPOLLIN
| EPOLLRDNORM
);
768 static const struct file_operations spufs_ibox_fops
= {
769 .open
= spufs_pipe_open
,
770 .read
= spufs_ibox_read
,
771 .poll
= spufs_ibox_poll
,
775 static ssize_t
spufs_ibox_stat_read(struct file
*file
, char __user
*buf
,
776 size_t len
, loff_t
*pos
)
778 struct spu_context
*ctx
= file
->private_data
;
785 ret
= spu_acquire(ctx
);
788 ibox_stat
= (ctx
->ops
->mbox_stat_read(ctx
) >> 16) & 0xff;
791 if (copy_to_user(buf
, &ibox_stat
, sizeof ibox_stat
))
797 static const struct file_operations spufs_ibox_stat_fops
= {
798 .open
= spufs_pipe_open
,
799 .read
= spufs_ibox_stat_read
,
803 /* low-level mailbox write */
804 size_t spu_wbox_write(struct spu_context
*ctx
, u32 data
)
806 return ctx
->ops
->wbox_write(ctx
, data
);
809 /* interrupt-level wbox callback function. */
810 void spufs_wbox_callback(struct spu
*spu
)
812 struct spu_context
*ctx
= spu
->ctx
;
815 wake_up_all(&ctx
->wbox_wq
);
819 * Write as many bytes to the interrupt mailbox as possible, until
820 * one of the conditions becomes true:
822 * - the mailbox is full
823 * - end of the user provided buffer
824 * - end of the mapped area
826 * If the file is opened without O_NONBLOCK, we wait here until
827 * space is available, but return when we have been able to
830 static ssize_t
spufs_wbox_write(struct file
*file
, const char __user
*buf
,
831 size_t len
, loff_t
*pos
)
833 struct spu_context
*ctx
= file
->private_data
;
834 u32 wbox_data
, __user
*udata
= (void __user
*)buf
;
840 if (get_user(wbox_data
, udata
))
843 count
= spu_acquire(ctx
);
848 * make sure we can at least write one element, by waiting
849 * in case of !O_NONBLOCK
852 if (file
->f_flags
& O_NONBLOCK
) {
853 if (!spu_wbox_write(ctx
, wbox_data
)) {
858 count
= spufs_wait(ctx
->wbox_wq
, spu_wbox_write(ctx
, wbox_data
));
864 /* write as much as possible */
865 for (count
= 4, udata
++; (count
+ 4) <= len
; count
+= 4, udata
++) {
867 ret
= get_user(wbox_data
, udata
);
871 ret
= spu_wbox_write(ctx
, wbox_data
);
882 static __poll_t
spufs_wbox_poll(struct file
*file
, poll_table
*wait
)
884 struct spu_context
*ctx
= file
->private_data
;
887 poll_wait(file
, &ctx
->wbox_wq
, wait
);
890 * For now keep this uninterruptible and also ignore the rule
891 * that poll should not sleep. Will be fixed later.
893 mutex_lock(&ctx
->state_mutex
);
894 mask
= ctx
->ops
->mbox_stat_poll(ctx
, EPOLLOUT
| EPOLLWRNORM
);
900 static const struct file_operations spufs_wbox_fops
= {
901 .open
= spufs_pipe_open
,
902 .write
= spufs_wbox_write
,
903 .poll
= spufs_wbox_poll
,
907 static ssize_t
spufs_wbox_stat_read(struct file
*file
, char __user
*buf
,
908 size_t len
, loff_t
*pos
)
910 struct spu_context
*ctx
= file
->private_data
;
917 ret
= spu_acquire(ctx
);
920 wbox_stat
= (ctx
->ops
->mbox_stat_read(ctx
) >> 8) & 0xff;
923 if (copy_to_user(buf
, &wbox_stat
, sizeof wbox_stat
))
929 static const struct file_operations spufs_wbox_stat_fops
= {
930 .open
= spufs_pipe_open
,
931 .read
= spufs_wbox_stat_read
,
935 static int spufs_signal1_open(struct inode
*inode
, struct file
*file
)
937 struct spufs_inode_info
*i
= SPUFS_I(inode
);
938 struct spu_context
*ctx
= i
->i_ctx
;
940 mutex_lock(&ctx
->mapping_lock
);
941 file
->private_data
= ctx
;
943 ctx
->signal1
= inode
->i_mapping
;
944 mutex_unlock(&ctx
->mapping_lock
);
945 return nonseekable_open(inode
, file
);
949 spufs_signal1_release(struct inode
*inode
, struct file
*file
)
951 struct spufs_inode_info
*i
= SPUFS_I(inode
);
952 struct spu_context
*ctx
= i
->i_ctx
;
954 mutex_lock(&ctx
->mapping_lock
);
957 mutex_unlock(&ctx
->mapping_lock
);
961 static ssize_t
spufs_signal1_dump(struct spu_context
*ctx
,
962 struct coredump_params
*cprm
)
964 if (!ctx
->csa
.spu_chnlcnt_RW
[3])
966 return spufs_dump_emit(cprm
, &ctx
->csa
.spu_chnldata_RW
[3],
967 sizeof(ctx
->csa
.spu_chnldata_RW
[3]));
970 static ssize_t
__spufs_signal1_read(struct spu_context
*ctx
, char __user
*buf
,
973 if (len
< sizeof(ctx
->csa
.spu_chnldata_RW
[3]))
975 if (!ctx
->csa
.spu_chnlcnt_RW
[3])
977 if (copy_to_user(buf
, &ctx
->csa
.spu_chnldata_RW
[3],
978 sizeof(ctx
->csa
.spu_chnldata_RW
[3])))
980 return sizeof(ctx
->csa
.spu_chnldata_RW
[3]);
983 static ssize_t
spufs_signal1_read(struct file
*file
, char __user
*buf
,
984 size_t len
, loff_t
*pos
)
987 struct spu_context
*ctx
= file
->private_data
;
989 ret
= spu_acquire_saved(ctx
);
992 ret
= __spufs_signal1_read(ctx
, buf
, len
);
993 spu_release_saved(ctx
);
998 static ssize_t
spufs_signal1_write(struct file
*file
, const char __user
*buf
,
999 size_t len
, loff_t
*pos
)
1001 struct spu_context
*ctx
;
1005 ctx
= file
->private_data
;
1010 if (copy_from_user(&data
, buf
, 4))
1013 ret
= spu_acquire(ctx
);
1016 ctx
->ops
->signal1_write(ctx
, data
);
1023 spufs_signal1_mmap_fault(struct vm_fault
*vmf
)
1025 #if SPUFS_SIGNAL_MAP_SIZE == 0x1000
1026 return spufs_ps_fault(vmf
, 0x14000, SPUFS_SIGNAL_MAP_SIZE
);
1027 #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
1028 /* For 64k pages, both signal1 and signal2 can be used to mmap the whole
1029 * signal 1 and 2 area
1031 return spufs_ps_fault(vmf
, 0x10000, SPUFS_SIGNAL_MAP_SIZE
);
1033 #error unsupported page size
1037 static const struct vm_operations_struct spufs_signal1_mmap_vmops
= {
1038 .fault
= spufs_signal1_mmap_fault
,
1041 static int spufs_signal1_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1043 if (!(vma
->vm_flags
& VM_SHARED
))
1046 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
1047 vma
->vm_page_prot
= pgprot_noncached(vma
->vm_page_prot
);
1049 vma
->vm_ops
= &spufs_signal1_mmap_vmops
;
1053 static const struct file_operations spufs_signal1_fops
= {
1054 .open
= spufs_signal1_open
,
1055 .release
= spufs_signal1_release
,
1056 .read
= spufs_signal1_read
,
1057 .write
= spufs_signal1_write
,
1058 .mmap
= spufs_signal1_mmap
,
1059 .llseek
= no_llseek
,
1062 static const struct file_operations spufs_signal1_nosched_fops
= {
1063 .open
= spufs_signal1_open
,
1064 .release
= spufs_signal1_release
,
1065 .write
= spufs_signal1_write
,
1066 .mmap
= spufs_signal1_mmap
,
1067 .llseek
= no_llseek
,
1070 static int spufs_signal2_open(struct inode
*inode
, struct file
*file
)
1072 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1073 struct spu_context
*ctx
= i
->i_ctx
;
1075 mutex_lock(&ctx
->mapping_lock
);
1076 file
->private_data
= ctx
;
1077 if (!i
->i_openers
++)
1078 ctx
->signal2
= inode
->i_mapping
;
1079 mutex_unlock(&ctx
->mapping_lock
);
1080 return nonseekable_open(inode
, file
);
1084 spufs_signal2_release(struct inode
*inode
, struct file
*file
)
1086 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1087 struct spu_context
*ctx
= i
->i_ctx
;
1089 mutex_lock(&ctx
->mapping_lock
);
1090 if (!--i
->i_openers
)
1091 ctx
->signal2
= NULL
;
1092 mutex_unlock(&ctx
->mapping_lock
);
1096 static ssize_t
spufs_signal2_dump(struct spu_context
*ctx
,
1097 struct coredump_params
*cprm
)
1099 if (!ctx
->csa
.spu_chnlcnt_RW
[4])
1101 return spufs_dump_emit(cprm
, &ctx
->csa
.spu_chnldata_RW
[4],
1102 sizeof(ctx
->csa
.spu_chnldata_RW
[4]));
1105 static ssize_t
__spufs_signal2_read(struct spu_context
*ctx
, char __user
*buf
,
1108 if (len
< sizeof(ctx
->csa
.spu_chnldata_RW
[4]))
1110 if (!ctx
->csa
.spu_chnlcnt_RW
[4])
1112 if (copy_to_user(buf
, &ctx
->csa
.spu_chnldata_RW
[4],
1113 sizeof(ctx
->csa
.spu_chnldata_RW
[4])))
1115 return sizeof(ctx
->csa
.spu_chnldata_RW
[4]);
1118 static ssize_t
spufs_signal2_read(struct file
*file
, char __user
*buf
,
1119 size_t len
, loff_t
*pos
)
1121 struct spu_context
*ctx
= file
->private_data
;
1124 ret
= spu_acquire_saved(ctx
);
1127 ret
= __spufs_signal2_read(ctx
, buf
, len
);
1128 spu_release_saved(ctx
);
1133 static ssize_t
spufs_signal2_write(struct file
*file
, const char __user
*buf
,
1134 size_t len
, loff_t
*pos
)
1136 struct spu_context
*ctx
;
1140 ctx
= file
->private_data
;
1145 if (copy_from_user(&data
, buf
, 4))
1148 ret
= spu_acquire(ctx
);
1151 ctx
->ops
->signal2_write(ctx
, data
);
1159 spufs_signal2_mmap_fault(struct vm_fault
*vmf
)
1161 #if SPUFS_SIGNAL_MAP_SIZE == 0x1000
1162 return spufs_ps_fault(vmf
, 0x1c000, SPUFS_SIGNAL_MAP_SIZE
);
1163 #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
1164 /* For 64k pages, both signal1 and signal2 can be used to mmap the whole
1165 * signal 1 and 2 area
1167 return spufs_ps_fault(vmf
, 0x10000, SPUFS_SIGNAL_MAP_SIZE
);
1169 #error unsupported page size
1173 static const struct vm_operations_struct spufs_signal2_mmap_vmops
= {
1174 .fault
= spufs_signal2_mmap_fault
,
1177 static int spufs_signal2_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1179 if (!(vma
->vm_flags
& VM_SHARED
))
1182 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
1183 vma
->vm_page_prot
= pgprot_noncached(vma
->vm_page_prot
);
1185 vma
->vm_ops
= &spufs_signal2_mmap_vmops
;
1188 #else /* SPUFS_MMAP_4K */
1189 #define spufs_signal2_mmap NULL
1190 #endif /* !SPUFS_MMAP_4K */
1192 static const struct file_operations spufs_signal2_fops
= {
1193 .open
= spufs_signal2_open
,
1194 .release
= spufs_signal2_release
,
1195 .read
= spufs_signal2_read
,
1196 .write
= spufs_signal2_write
,
1197 .mmap
= spufs_signal2_mmap
,
1198 .llseek
= no_llseek
,
1201 static const struct file_operations spufs_signal2_nosched_fops
= {
1202 .open
= spufs_signal2_open
,
1203 .release
= spufs_signal2_release
,
1204 .write
= spufs_signal2_write
,
1205 .mmap
= spufs_signal2_mmap
,
1206 .llseek
= no_llseek
,
1210 * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the
1211 * work of acquiring (or not) the SPU context before calling through
1212 * to the actual get routine. The set routine is called directly.
1214 #define SPU_ATTR_NOACQUIRE 0
1215 #define SPU_ATTR_ACQUIRE 1
1216 #define SPU_ATTR_ACQUIRE_SAVED 2
1218 #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \
1219 static int __##__get(void *data, u64 *val) \
1221 struct spu_context *ctx = data; \
1224 if (__acquire == SPU_ATTR_ACQUIRE) { \
1225 ret = spu_acquire(ctx); \
1228 *val = __get(ctx); \
1230 } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \
1231 ret = spu_acquire_saved(ctx); \
1234 *val = __get(ctx); \
1235 spu_release_saved(ctx); \
1237 *val = __get(ctx); \
1241 DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt);
1243 static int spufs_signal1_type_set(void *data
, u64 val
)
1245 struct spu_context
*ctx
= data
;
1248 ret
= spu_acquire(ctx
);
1251 ctx
->ops
->signal1_type_set(ctx
, val
);
1257 static u64
spufs_signal1_type_get(struct spu_context
*ctx
)
1259 return ctx
->ops
->signal1_type_get(ctx
);
1261 DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type
, spufs_signal1_type_get
,
1262 spufs_signal1_type_set
, "%llu\n", SPU_ATTR_ACQUIRE
);
1265 static int spufs_signal2_type_set(void *data
, u64 val
)
1267 struct spu_context
*ctx
= data
;
1270 ret
= spu_acquire(ctx
);
1273 ctx
->ops
->signal2_type_set(ctx
, val
);
1279 static u64
spufs_signal2_type_get(struct spu_context
*ctx
)
1281 return ctx
->ops
->signal2_type_get(ctx
);
1283 DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type
, spufs_signal2_type_get
,
1284 spufs_signal2_type_set
, "%llu\n", SPU_ATTR_ACQUIRE
);
1288 spufs_mss_mmap_fault(struct vm_fault
*vmf
)
1290 return spufs_ps_fault(vmf
, 0x0000, SPUFS_MSS_MAP_SIZE
);
1293 static const struct vm_operations_struct spufs_mss_mmap_vmops
= {
1294 .fault
= spufs_mss_mmap_fault
,
1298 * mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
1300 static int spufs_mss_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1302 if (!(vma
->vm_flags
& VM_SHARED
))
1305 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
1306 vma
->vm_page_prot
= pgprot_noncached(vma
->vm_page_prot
);
1308 vma
->vm_ops
= &spufs_mss_mmap_vmops
;
1311 #else /* SPUFS_MMAP_4K */
1312 #define spufs_mss_mmap NULL
1313 #endif /* !SPUFS_MMAP_4K */
1315 static int spufs_mss_open(struct inode
*inode
, struct file
*file
)
1317 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1318 struct spu_context
*ctx
= i
->i_ctx
;
1320 file
->private_data
= i
->i_ctx
;
1322 mutex_lock(&ctx
->mapping_lock
);
1323 if (!i
->i_openers
++)
1324 ctx
->mss
= inode
->i_mapping
;
1325 mutex_unlock(&ctx
->mapping_lock
);
1326 return nonseekable_open(inode
, file
);
1330 spufs_mss_release(struct inode
*inode
, struct file
*file
)
1332 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1333 struct spu_context
*ctx
= i
->i_ctx
;
1335 mutex_lock(&ctx
->mapping_lock
);
1336 if (!--i
->i_openers
)
1338 mutex_unlock(&ctx
->mapping_lock
);
1342 static const struct file_operations spufs_mss_fops
= {
1343 .open
= spufs_mss_open
,
1344 .release
= spufs_mss_release
,
1345 .mmap
= spufs_mss_mmap
,
1346 .llseek
= no_llseek
,
1350 spufs_psmap_mmap_fault(struct vm_fault
*vmf
)
1352 return spufs_ps_fault(vmf
, 0x0000, SPUFS_PS_MAP_SIZE
);
1355 static const struct vm_operations_struct spufs_psmap_mmap_vmops
= {
1356 .fault
= spufs_psmap_mmap_fault
,
1360 * mmap support for full problem state area [0x00000 - 0x1ffff].
1362 static int spufs_psmap_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1364 if (!(vma
->vm_flags
& VM_SHARED
))
1367 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
1368 vma
->vm_page_prot
= pgprot_noncached(vma
->vm_page_prot
);
1370 vma
->vm_ops
= &spufs_psmap_mmap_vmops
;
1374 static int spufs_psmap_open(struct inode
*inode
, struct file
*file
)
1376 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1377 struct spu_context
*ctx
= i
->i_ctx
;
1379 mutex_lock(&ctx
->mapping_lock
);
1380 file
->private_data
= i
->i_ctx
;
1381 if (!i
->i_openers
++)
1382 ctx
->psmap
= inode
->i_mapping
;
1383 mutex_unlock(&ctx
->mapping_lock
);
1384 return nonseekable_open(inode
, file
);
1388 spufs_psmap_release(struct inode
*inode
, struct file
*file
)
1390 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1391 struct spu_context
*ctx
= i
->i_ctx
;
1393 mutex_lock(&ctx
->mapping_lock
);
1394 if (!--i
->i_openers
)
1396 mutex_unlock(&ctx
->mapping_lock
);
1400 static const struct file_operations spufs_psmap_fops
= {
1401 .open
= spufs_psmap_open
,
1402 .release
= spufs_psmap_release
,
1403 .mmap
= spufs_psmap_mmap
,
1404 .llseek
= no_llseek
,
1410 spufs_mfc_mmap_fault(struct vm_fault
*vmf
)
1412 return spufs_ps_fault(vmf
, 0x3000, SPUFS_MFC_MAP_SIZE
);
1415 static const struct vm_operations_struct spufs_mfc_mmap_vmops
= {
1416 .fault
= spufs_mfc_mmap_fault
,
1420 * mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
1422 static int spufs_mfc_mmap(struct file
*file
, struct vm_area_struct
*vma
)
1424 if (!(vma
->vm_flags
& VM_SHARED
))
1427 vma
->vm_flags
|= VM_IO
| VM_PFNMAP
;
1428 vma
->vm_page_prot
= pgprot_noncached(vma
->vm_page_prot
);
1430 vma
->vm_ops
= &spufs_mfc_mmap_vmops
;
1433 #else /* SPUFS_MMAP_4K */
1434 #define spufs_mfc_mmap NULL
1435 #endif /* !SPUFS_MMAP_4K */
1437 static int spufs_mfc_open(struct inode
*inode
, struct file
*file
)
1439 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1440 struct spu_context
*ctx
= i
->i_ctx
;
1442 /* we don't want to deal with DMA into other processes */
1443 if (ctx
->owner
!= current
->mm
)
1446 if (atomic_read(&inode
->i_count
) != 1)
1449 mutex_lock(&ctx
->mapping_lock
);
1450 file
->private_data
= ctx
;
1451 if (!i
->i_openers
++)
1452 ctx
->mfc
= inode
->i_mapping
;
1453 mutex_unlock(&ctx
->mapping_lock
);
1454 return nonseekable_open(inode
, file
);
1458 spufs_mfc_release(struct inode
*inode
, struct file
*file
)
1460 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1461 struct spu_context
*ctx
= i
->i_ctx
;
1463 mutex_lock(&ctx
->mapping_lock
);
1464 if (!--i
->i_openers
)
1466 mutex_unlock(&ctx
->mapping_lock
);
1470 /* interrupt-level mfc callback function. */
1471 void spufs_mfc_callback(struct spu
*spu
)
1473 struct spu_context
*ctx
= spu
->ctx
;
1476 wake_up_all(&ctx
->mfc_wq
);
1479 static int spufs_read_mfc_tagstatus(struct spu_context
*ctx
, u32
*status
)
1481 /* See if there is one tag group is complete */
1482 /* FIXME we need locking around tagwait */
1483 *status
= ctx
->ops
->read_mfc_tagstatus(ctx
) & ctx
->tagwait
;
1484 ctx
->tagwait
&= ~*status
;
1488 /* enable interrupt waiting for any tag group,
1489 may silently fail if interrupts are already enabled */
1490 ctx
->ops
->set_mfc_query(ctx
, ctx
->tagwait
, 1);
1494 static ssize_t
spufs_mfc_read(struct file
*file
, char __user
*buffer
,
1495 size_t size
, loff_t
*pos
)
1497 struct spu_context
*ctx
= file
->private_data
;
1504 ret
= spu_acquire(ctx
);
1509 if (file
->f_flags
& O_NONBLOCK
) {
1510 status
= ctx
->ops
->read_mfc_tagstatus(ctx
);
1511 if (!(status
& ctx
->tagwait
))
1514 /* XXX(hch): shouldn't we clear ret here? */
1515 ctx
->tagwait
&= ~status
;
1517 ret
= spufs_wait(ctx
->mfc_wq
,
1518 spufs_read_mfc_tagstatus(ctx
, &status
));
1525 if (copy_to_user(buffer
, &status
, 4))
1532 static int spufs_check_valid_dma(struct mfc_dma_command
*cmd
)
1534 pr_debug("queueing DMA %x %llx %x %x %x\n", cmd
->lsa
,
1535 cmd
->ea
, cmd
->size
, cmd
->tag
, cmd
->cmd
);
1546 pr_debug("invalid DMA opcode %x\n", cmd
->cmd
);
1550 if ((cmd
->lsa
& 0xf) != (cmd
->ea
&0xf)) {
1551 pr_debug("invalid DMA alignment, ea %llx lsa %x\n",
1556 switch (cmd
->size
& 0xf) {
1577 pr_debug("invalid DMA alignment %x for size %x\n",
1578 cmd
->lsa
& 0xf, cmd
->size
);
1582 if (cmd
->size
> 16 * 1024) {
1583 pr_debug("invalid DMA size %x\n", cmd
->size
);
1587 if (cmd
->tag
& 0xfff0) {
1588 /* we reserve the higher tag numbers for kernel use */
1589 pr_debug("invalid DMA tag\n");
1594 /* not supported in this version */
1595 pr_debug("invalid DMA class\n");
1602 static int spu_send_mfc_command(struct spu_context
*ctx
,
1603 struct mfc_dma_command cmd
,
1606 *error
= ctx
->ops
->send_mfc_command(ctx
, &cmd
);
1607 if (*error
== -EAGAIN
) {
1608 /* wait for any tag group to complete
1609 so we have space for the new command */
1610 ctx
->ops
->set_mfc_query(ctx
, ctx
->tagwait
, 1);
1611 /* try again, because the queue might be
1613 *error
= ctx
->ops
->send_mfc_command(ctx
, &cmd
);
1614 if (*error
== -EAGAIN
)
1620 static ssize_t
spufs_mfc_write(struct file
*file
, const char __user
*buffer
,
1621 size_t size
, loff_t
*pos
)
1623 struct spu_context
*ctx
= file
->private_data
;
1624 struct mfc_dma_command cmd
;
1627 if (size
!= sizeof cmd
)
1631 if (copy_from_user(&cmd
, buffer
, sizeof cmd
))
1634 ret
= spufs_check_valid_dma(&cmd
);
1638 ret
= spu_acquire(ctx
);
1642 ret
= spufs_wait(ctx
->run_wq
, ctx
->state
== SPU_STATE_RUNNABLE
);
1646 if (file
->f_flags
& O_NONBLOCK
) {
1647 ret
= ctx
->ops
->send_mfc_command(ctx
, &cmd
);
1650 ret
= spufs_wait(ctx
->mfc_wq
,
1651 spu_send_mfc_command(ctx
, cmd
, &status
));
1661 ctx
->tagwait
|= 1 << cmd
.tag
;
1670 static __poll_t
spufs_mfc_poll(struct file
*file
,poll_table
*wait
)
1672 struct spu_context
*ctx
= file
->private_data
;
1673 u32 free_elements
, tagstatus
;
1676 poll_wait(file
, &ctx
->mfc_wq
, wait
);
1679 * For now keep this uninterruptible and also ignore the rule
1680 * that poll should not sleep. Will be fixed later.
1682 mutex_lock(&ctx
->state_mutex
);
1683 ctx
->ops
->set_mfc_query(ctx
, ctx
->tagwait
, 2);
1684 free_elements
= ctx
->ops
->get_mfc_free_elements(ctx
);
1685 tagstatus
= ctx
->ops
->read_mfc_tagstatus(ctx
);
1689 if (free_elements
& 0xffff)
1690 mask
|= EPOLLOUT
| EPOLLWRNORM
;
1691 if (tagstatus
& ctx
->tagwait
)
1692 mask
|= EPOLLIN
| EPOLLRDNORM
;
1694 pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__
,
1695 free_elements
, tagstatus
, ctx
->tagwait
);
1700 static int spufs_mfc_flush(struct file
*file
, fl_owner_t id
)
1702 struct spu_context
*ctx
= file
->private_data
;
1705 ret
= spu_acquire(ctx
);
1709 /* this currently hangs */
1710 ret
= spufs_wait(ctx
->mfc_wq
,
1711 ctx
->ops
->set_mfc_query(ctx
, ctx
->tagwait
, 2));
1714 ret
= spufs_wait(ctx
->mfc_wq
,
1715 ctx
->ops
->read_mfc_tagstatus(ctx
) == ctx
->tagwait
);
1726 static int spufs_mfc_fsync(struct file
*file
, loff_t start
, loff_t end
, int datasync
)
1728 struct inode
*inode
= file_inode(file
);
1729 int err
= file_write_and_wait_range(file
, start
, end
);
1732 err
= spufs_mfc_flush(file
, NULL
);
1733 inode_unlock(inode
);
1738 static const struct file_operations spufs_mfc_fops
= {
1739 .open
= spufs_mfc_open
,
1740 .release
= spufs_mfc_release
,
1741 .read
= spufs_mfc_read
,
1742 .write
= spufs_mfc_write
,
1743 .poll
= spufs_mfc_poll
,
1744 .flush
= spufs_mfc_flush
,
1745 .fsync
= spufs_mfc_fsync
,
1746 .mmap
= spufs_mfc_mmap
,
1747 .llseek
= no_llseek
,
1750 static int spufs_npc_set(void *data
, u64 val
)
1752 struct spu_context
*ctx
= data
;
1755 ret
= spu_acquire(ctx
);
1758 ctx
->ops
->npc_write(ctx
, val
);
1764 static u64
spufs_npc_get(struct spu_context
*ctx
)
1766 return ctx
->ops
->npc_read(ctx
);
1768 DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops
, spufs_npc_get
, spufs_npc_set
,
1769 "0x%llx\n", SPU_ATTR_ACQUIRE
);
1771 static int spufs_decr_set(void *data
, u64 val
)
1773 struct spu_context
*ctx
= data
;
1774 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
1777 ret
= spu_acquire_saved(ctx
);
1780 lscsa
->decr
.slot
[0] = (u32
) val
;
1781 spu_release_saved(ctx
);
1786 static u64
spufs_decr_get(struct spu_context
*ctx
)
1788 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
1789 return lscsa
->decr
.slot
[0];
1791 DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops
, spufs_decr_get
, spufs_decr_set
,
1792 "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED
);
1794 static int spufs_decr_status_set(void *data
, u64 val
)
1796 struct spu_context
*ctx
= data
;
1799 ret
= spu_acquire_saved(ctx
);
1803 ctx
->csa
.priv2
.mfc_control_RW
|= MFC_CNTL_DECREMENTER_RUNNING
;
1805 ctx
->csa
.priv2
.mfc_control_RW
&= ~MFC_CNTL_DECREMENTER_RUNNING
;
1806 spu_release_saved(ctx
);
1811 static u64
spufs_decr_status_get(struct spu_context
*ctx
)
1813 if (ctx
->csa
.priv2
.mfc_control_RW
& MFC_CNTL_DECREMENTER_RUNNING
)
1814 return SPU_DECR_STATUS_RUNNING
;
1818 DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops
, spufs_decr_status_get
,
1819 spufs_decr_status_set
, "0x%llx\n",
1820 SPU_ATTR_ACQUIRE_SAVED
);
1822 static int spufs_event_mask_set(void *data
, u64 val
)
1824 struct spu_context
*ctx
= data
;
1825 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
1828 ret
= spu_acquire_saved(ctx
);
1831 lscsa
->event_mask
.slot
[0] = (u32
) val
;
1832 spu_release_saved(ctx
);
1837 static u64
spufs_event_mask_get(struct spu_context
*ctx
)
1839 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
1840 return lscsa
->event_mask
.slot
[0];
1843 DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops
, spufs_event_mask_get
,
1844 spufs_event_mask_set
, "0x%llx\n",
1845 SPU_ATTR_ACQUIRE_SAVED
);
1847 static u64
spufs_event_status_get(struct spu_context
*ctx
)
1849 struct spu_state
*state
= &ctx
->csa
;
1851 stat
= state
->spu_chnlcnt_RW
[0];
1853 return state
->spu_chnldata_RW
[0];
1856 DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops
, spufs_event_status_get
,
1857 NULL
, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED
)
1859 static int spufs_srr0_set(void *data
, u64 val
)
1861 struct spu_context
*ctx
= data
;
1862 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
1865 ret
= spu_acquire_saved(ctx
);
1868 lscsa
->srr0
.slot
[0] = (u32
) val
;
1869 spu_release_saved(ctx
);
1874 static u64
spufs_srr0_get(struct spu_context
*ctx
)
1876 struct spu_lscsa
*lscsa
= ctx
->csa
.lscsa
;
1877 return lscsa
->srr0
.slot
[0];
1879 DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops
, spufs_srr0_get
, spufs_srr0_set
,
1880 "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED
)
1882 static u64
spufs_id_get(struct spu_context
*ctx
)
1886 if (ctx
->state
== SPU_STATE_RUNNABLE
)
1887 num
= ctx
->spu
->number
;
1889 num
= (unsigned int)-1;
1893 DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops
, spufs_id_get
, NULL
, "0x%llx\n",
1896 static u64
spufs_object_id_get(struct spu_context
*ctx
)
1898 /* FIXME: Should there really be no locking here? */
1899 return ctx
->object_id
;
1902 static int spufs_object_id_set(void *data
, u64 id
)
1904 struct spu_context
*ctx
= data
;
1905 ctx
->object_id
= id
;
1910 DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops
, spufs_object_id_get
,
1911 spufs_object_id_set
, "0x%llx\n", SPU_ATTR_NOACQUIRE
);
1913 static u64
spufs_lslr_get(struct spu_context
*ctx
)
1915 return ctx
->csa
.priv2
.spu_lslr_RW
;
1917 DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops
, spufs_lslr_get
, NULL
, "0x%llx\n",
1918 SPU_ATTR_ACQUIRE_SAVED
);
1920 static int spufs_info_open(struct inode
*inode
, struct file
*file
)
1922 struct spufs_inode_info
*i
= SPUFS_I(inode
);
1923 struct spu_context
*ctx
= i
->i_ctx
;
1924 file
->private_data
= ctx
;
1928 static int spufs_caps_show(struct seq_file
*s
, void *private)
1930 struct spu_context
*ctx
= s
->private;
1932 if (!(ctx
->flags
& SPU_CREATE_NOSCHED
))
1933 seq_puts(s
, "sched\n");
1934 if (!(ctx
->flags
& SPU_CREATE_ISOLATE
))
1935 seq_puts(s
, "step\n");
1939 static int spufs_caps_open(struct inode
*inode
, struct file
*file
)
1941 return single_open(file
, spufs_caps_show
, SPUFS_I(inode
)->i_ctx
);
1944 static const struct file_operations spufs_caps_fops
= {
1945 .open
= spufs_caps_open
,
1947 .llseek
= seq_lseek
,
1948 .release
= single_release
,
1951 static ssize_t
spufs_mbox_info_dump(struct spu_context
*ctx
,
1952 struct coredump_params
*cprm
)
1954 if (!(ctx
->csa
.prob
.mb_stat_R
& 0x0000ff))
1956 return spufs_dump_emit(cprm
, &ctx
->csa
.prob
.pu_mb_R
,
1957 sizeof(ctx
->csa
.prob
.pu_mb_R
));
1960 static ssize_t
spufs_mbox_info_read(struct file
*file
, char __user
*buf
,
1961 size_t len
, loff_t
*pos
)
1963 struct spu_context
*ctx
= file
->private_data
;
1967 ret
= spu_acquire_saved(ctx
);
1970 spin_lock(&ctx
->csa
.register_lock
);
1971 stat
= ctx
->csa
.prob
.mb_stat_R
;
1972 data
= ctx
->csa
.prob
.pu_mb_R
;
1973 spin_unlock(&ctx
->csa
.register_lock
);
1974 spu_release_saved(ctx
);
1976 /* EOF if there's no entry in the mbox */
1977 if (!(stat
& 0x0000ff))
1980 return simple_read_from_buffer(buf
, len
, pos
, &data
, sizeof(data
));
1983 static const struct file_operations spufs_mbox_info_fops
= {
1984 .open
= spufs_info_open
,
1985 .read
= spufs_mbox_info_read
,
1986 .llseek
= generic_file_llseek
,
1989 static ssize_t
spufs_ibox_info_dump(struct spu_context
*ctx
,
1990 struct coredump_params
*cprm
)
1992 if (!(ctx
->csa
.prob
.mb_stat_R
& 0xff0000))
1994 return spufs_dump_emit(cprm
, &ctx
->csa
.priv2
.puint_mb_R
,
1995 sizeof(ctx
->csa
.priv2
.puint_mb_R
));
1998 static ssize_t
spufs_ibox_info_read(struct file
*file
, char __user
*buf
,
1999 size_t len
, loff_t
*pos
)
2001 struct spu_context
*ctx
= file
->private_data
;
2005 ret
= spu_acquire_saved(ctx
);
2008 spin_lock(&ctx
->csa
.register_lock
);
2009 stat
= ctx
->csa
.prob
.mb_stat_R
;
2010 data
= ctx
->csa
.priv2
.puint_mb_R
;
2011 spin_unlock(&ctx
->csa
.register_lock
);
2012 spu_release_saved(ctx
);
2014 /* EOF if there's no entry in the ibox */
2015 if (!(stat
& 0xff0000))
2018 return simple_read_from_buffer(buf
, len
, pos
, &data
, sizeof(data
));
2021 static const struct file_operations spufs_ibox_info_fops
= {
2022 .open
= spufs_info_open
,
2023 .read
= spufs_ibox_info_read
,
2024 .llseek
= generic_file_llseek
,
2027 static size_t spufs_wbox_info_cnt(struct spu_context
*ctx
)
2029 return (4 - ((ctx
->csa
.prob
.mb_stat_R
& 0x00ff00) >> 8)) * sizeof(u32
);
2032 static ssize_t
spufs_wbox_info_dump(struct spu_context
*ctx
,
2033 struct coredump_params
*cprm
)
2035 return spufs_dump_emit(cprm
, &ctx
->csa
.spu_mailbox_data
,
2036 spufs_wbox_info_cnt(ctx
));
2039 static ssize_t
spufs_wbox_info_read(struct file
*file
, char __user
*buf
,
2040 size_t len
, loff_t
*pos
)
2042 struct spu_context
*ctx
= file
->private_data
;
2043 u32 data
[ARRAY_SIZE(ctx
->csa
.spu_mailbox_data
)];
2046 ret
= spu_acquire_saved(ctx
);
2049 spin_lock(&ctx
->csa
.register_lock
);
2050 count
= spufs_wbox_info_cnt(ctx
);
2051 memcpy(&data
, &ctx
->csa
.spu_mailbox_data
, sizeof(data
));
2052 spin_unlock(&ctx
->csa
.register_lock
);
2053 spu_release_saved(ctx
);
2055 return simple_read_from_buffer(buf
, len
, pos
, &data
,
2056 count
* sizeof(u32
));
2059 static const struct file_operations spufs_wbox_info_fops
= {
2060 .open
= spufs_info_open
,
2061 .read
= spufs_wbox_info_read
,
2062 .llseek
= generic_file_llseek
,
2065 static void spufs_get_dma_info(struct spu_context
*ctx
,
2066 struct spu_dma_info
*info
)
2070 info
->dma_info_type
= ctx
->csa
.priv2
.spu_tag_status_query_RW
;
2071 info
->dma_info_mask
= ctx
->csa
.lscsa
->tag_mask
.slot
[0];
2072 info
->dma_info_status
= ctx
->csa
.spu_chnldata_RW
[24];
2073 info
->dma_info_stall_and_notify
= ctx
->csa
.spu_chnldata_RW
[25];
2074 info
->dma_info_atomic_command_status
= ctx
->csa
.spu_chnldata_RW
[27];
2075 for (i
= 0; i
< 16; i
++) {
2076 struct mfc_cq_sr
*qp
= &info
->dma_info_command_data
[i
];
2077 struct mfc_cq_sr
*spuqp
= &ctx
->csa
.priv2
.spuq
[i
];
2079 qp
->mfc_cq_data0_RW
= spuqp
->mfc_cq_data0_RW
;
2080 qp
->mfc_cq_data1_RW
= spuqp
->mfc_cq_data1_RW
;
2081 qp
->mfc_cq_data2_RW
= spuqp
->mfc_cq_data2_RW
;
2082 qp
->mfc_cq_data3_RW
= spuqp
->mfc_cq_data3_RW
;
2086 static ssize_t
spufs_dma_info_dump(struct spu_context
*ctx
,
2087 struct coredump_params
*cprm
)
2089 struct spu_dma_info info
;
2091 spufs_get_dma_info(ctx
, &info
);
2092 return spufs_dump_emit(cprm
, &info
, sizeof(info
));
2095 static ssize_t
spufs_dma_info_read(struct file
*file
, char __user
*buf
,
2096 size_t len
, loff_t
*pos
)
2098 struct spu_context
*ctx
= file
->private_data
;
2099 struct spu_dma_info info
;
2102 ret
= spu_acquire_saved(ctx
);
2105 spin_lock(&ctx
->csa
.register_lock
);
2106 spufs_get_dma_info(ctx
, &info
);
2107 spin_unlock(&ctx
->csa
.register_lock
);
2108 spu_release_saved(ctx
);
2110 return simple_read_from_buffer(buf
, len
, pos
, &info
,
2114 static const struct file_operations spufs_dma_info_fops
= {
2115 .open
= spufs_info_open
,
2116 .read
= spufs_dma_info_read
,
2117 .llseek
= no_llseek
,
2120 static void spufs_get_proxydma_info(struct spu_context
*ctx
,
2121 struct spu_proxydma_info
*info
)
2125 info
->proxydma_info_type
= ctx
->csa
.prob
.dma_querytype_RW
;
2126 info
->proxydma_info_mask
= ctx
->csa
.prob
.dma_querymask_RW
;
2127 info
->proxydma_info_status
= ctx
->csa
.prob
.dma_tagstatus_R
;
2129 for (i
= 0; i
< 8; i
++) {
2130 struct mfc_cq_sr
*qp
= &info
->proxydma_info_command_data
[i
];
2131 struct mfc_cq_sr
*puqp
= &ctx
->csa
.priv2
.puq
[i
];
2133 qp
->mfc_cq_data0_RW
= puqp
->mfc_cq_data0_RW
;
2134 qp
->mfc_cq_data1_RW
= puqp
->mfc_cq_data1_RW
;
2135 qp
->mfc_cq_data2_RW
= puqp
->mfc_cq_data2_RW
;
2136 qp
->mfc_cq_data3_RW
= puqp
->mfc_cq_data3_RW
;
2140 static ssize_t
spufs_proxydma_info_dump(struct spu_context
*ctx
,
2141 struct coredump_params
*cprm
)
2143 struct spu_proxydma_info info
;
2145 spufs_get_proxydma_info(ctx
, &info
);
2146 return spufs_dump_emit(cprm
, &info
, sizeof(info
));
2149 static ssize_t
spufs_proxydma_info_read(struct file
*file
, char __user
*buf
,
2150 size_t len
, loff_t
*pos
)
2152 struct spu_context
*ctx
= file
->private_data
;
2153 struct spu_proxydma_info info
;
2156 if (len
< sizeof(info
))
2159 ret
= spu_acquire_saved(ctx
);
2162 spin_lock(&ctx
->csa
.register_lock
);
2163 spufs_get_proxydma_info(ctx
, &info
);
2164 spin_unlock(&ctx
->csa
.register_lock
);
2165 spu_release_saved(ctx
);
2167 return simple_read_from_buffer(buf
, len
, pos
, &info
,
2171 static const struct file_operations spufs_proxydma_info_fops
= {
2172 .open
= spufs_info_open
,
2173 .read
= spufs_proxydma_info_read
,
2174 .llseek
= no_llseek
,
2177 static int spufs_show_tid(struct seq_file
*s
, void *private)
2179 struct spu_context
*ctx
= s
->private;
2181 seq_printf(s
, "%d\n", ctx
->tid
);
2185 static int spufs_tid_open(struct inode
*inode
, struct file
*file
)
2187 return single_open(file
, spufs_show_tid
, SPUFS_I(inode
)->i_ctx
);
2190 static const struct file_operations spufs_tid_fops
= {
2191 .open
= spufs_tid_open
,
2193 .llseek
= seq_lseek
,
2194 .release
= single_release
,
2197 static const char *ctx_state_names
[] = {
2198 "user", "system", "iowait", "loaded"
2201 static unsigned long long spufs_acct_time(struct spu_context
*ctx
,
2202 enum spu_utilization_state state
)
2204 unsigned long long time
= ctx
->stats
.times
[state
];
2207 * In general, utilization statistics are updated by the controlling
2208 * thread as the spu context moves through various well defined
2209 * state transitions, but if the context is lazily loaded its
2210 * utilization statistics are not updated as the controlling thread
2211 * is not tightly coupled with the execution of the spu context. We
2212 * calculate and apply the time delta from the last recorded state
2213 * of the spu context.
2215 if (ctx
->spu
&& ctx
->stats
.util_state
== state
) {
2216 time
+= ktime_get_ns() - ctx
->stats
.tstamp
;
2219 return time
/ NSEC_PER_MSEC
;
2222 static unsigned long long spufs_slb_flts(struct spu_context
*ctx
)
2224 unsigned long long slb_flts
= ctx
->stats
.slb_flt
;
2226 if (ctx
->state
== SPU_STATE_RUNNABLE
) {
2227 slb_flts
+= (ctx
->spu
->stats
.slb_flt
-
2228 ctx
->stats
.slb_flt_base
);
2234 static unsigned long long spufs_class2_intrs(struct spu_context
*ctx
)
2236 unsigned long long class2_intrs
= ctx
->stats
.class2_intr
;
2238 if (ctx
->state
== SPU_STATE_RUNNABLE
) {
2239 class2_intrs
+= (ctx
->spu
->stats
.class2_intr
-
2240 ctx
->stats
.class2_intr_base
);
2243 return class2_intrs
;
2247 static int spufs_show_stat(struct seq_file
*s
, void *private)
2249 struct spu_context
*ctx
= s
->private;
2252 ret
= spu_acquire(ctx
);
2256 seq_printf(s
, "%s %llu %llu %llu %llu "
2257 "%llu %llu %llu %llu %llu %llu %llu %llu\n",
2258 ctx_state_names
[ctx
->stats
.util_state
],
2259 spufs_acct_time(ctx
, SPU_UTIL_USER
),
2260 spufs_acct_time(ctx
, SPU_UTIL_SYSTEM
),
2261 spufs_acct_time(ctx
, SPU_UTIL_IOWAIT
),
2262 spufs_acct_time(ctx
, SPU_UTIL_IDLE_LOADED
),
2263 ctx
->stats
.vol_ctx_switch
,
2264 ctx
->stats
.invol_ctx_switch
,
2265 spufs_slb_flts(ctx
),
2266 ctx
->stats
.hash_flt
,
2269 spufs_class2_intrs(ctx
),
2270 ctx
->stats
.libassist
);
2275 static int spufs_stat_open(struct inode
*inode
, struct file
*file
)
2277 return single_open(file
, spufs_show_stat
, SPUFS_I(inode
)->i_ctx
);
2280 static const struct file_operations spufs_stat_fops
= {
2281 .open
= spufs_stat_open
,
2283 .llseek
= seq_lseek
,
2284 .release
= single_release
,
2287 static inline int spufs_switch_log_used(struct spu_context
*ctx
)
2289 return (ctx
->switch_log
->head
- ctx
->switch_log
->tail
) %
2293 static inline int spufs_switch_log_avail(struct spu_context
*ctx
)
2295 return SWITCH_LOG_BUFSIZE
- spufs_switch_log_used(ctx
);
2298 static int spufs_switch_log_open(struct inode
*inode
, struct file
*file
)
2300 struct spu_context
*ctx
= SPUFS_I(inode
)->i_ctx
;
2303 rc
= spu_acquire(ctx
);
2307 if (ctx
->switch_log
) {
2312 ctx
->switch_log
= kmalloc(struct_size(ctx
->switch_log
, log
,
2313 SWITCH_LOG_BUFSIZE
), GFP_KERNEL
);
2315 if (!ctx
->switch_log
) {
2320 ctx
->switch_log
->head
= ctx
->switch_log
->tail
= 0;
2321 init_waitqueue_head(&ctx
->switch_log
->wait
);
2329 static int spufs_switch_log_release(struct inode
*inode
, struct file
*file
)
2331 struct spu_context
*ctx
= SPUFS_I(inode
)->i_ctx
;
2334 rc
= spu_acquire(ctx
);
2338 kfree(ctx
->switch_log
);
2339 ctx
->switch_log
= NULL
;
2345 static int switch_log_sprint(struct spu_context
*ctx
, char *tbuf
, int n
)
2347 struct switch_log_entry
*p
;
2349 p
= ctx
->switch_log
->log
+ ctx
->switch_log
->tail
% SWITCH_LOG_BUFSIZE
;
2351 return snprintf(tbuf
, n
, "%llu.%09u %d %u %u %llu\n",
2352 (unsigned long long) p
->tstamp
.tv_sec
,
2353 (unsigned int) p
->tstamp
.tv_nsec
,
2355 (unsigned int) p
->type
,
2356 (unsigned int) p
->val
,
2357 (unsigned long long) p
->timebase
);
2360 static ssize_t
spufs_switch_log_read(struct file
*file
, char __user
*buf
,
2361 size_t len
, loff_t
*ppos
)
2363 struct inode
*inode
= file_inode(file
);
2364 struct spu_context
*ctx
= SPUFS_I(inode
)->i_ctx
;
2365 int error
= 0, cnt
= 0;
2370 error
= spu_acquire(ctx
);
2378 if (spufs_switch_log_used(ctx
) == 0) {
2380 /* If there's data ready to go, we can
2381 * just return straight away */
2384 } else if (file
->f_flags
& O_NONBLOCK
) {
2389 /* spufs_wait will drop the mutex and
2390 * re-acquire, but since we're in read(), the
2391 * file cannot be _released (and so
2392 * ctx->switch_log is stable).
2394 error
= spufs_wait(ctx
->switch_log
->wait
,
2395 spufs_switch_log_used(ctx
) > 0);
2397 /* On error, spufs_wait returns without the
2398 * state mutex held */
2402 /* We may have had entries read from underneath
2403 * us while we dropped the mutex in spufs_wait,
2405 if (spufs_switch_log_used(ctx
) == 0)
2410 width
= switch_log_sprint(ctx
, tbuf
, sizeof(tbuf
));
2412 ctx
->switch_log
->tail
=
2413 (ctx
->switch_log
->tail
+ 1) %
2416 /* If the record is greater than space available return
2417 * partial buffer (so far) */
2420 error
= copy_to_user(buf
+ cnt
, tbuf
, width
);
2428 return cnt
== 0 ? error
: cnt
;
2431 static __poll_t
spufs_switch_log_poll(struct file
*file
, poll_table
*wait
)
2433 struct inode
*inode
= file_inode(file
);
2434 struct spu_context
*ctx
= SPUFS_I(inode
)->i_ctx
;
2438 poll_wait(file
, &ctx
->switch_log
->wait
, wait
);
2440 rc
= spu_acquire(ctx
);
2444 if (spufs_switch_log_used(ctx
) > 0)
2452 static const struct file_operations spufs_switch_log_fops
= {
2453 .open
= spufs_switch_log_open
,
2454 .read
= spufs_switch_log_read
,
2455 .poll
= spufs_switch_log_poll
,
2456 .release
= spufs_switch_log_release
,
2457 .llseek
= no_llseek
,
2461 * Log a context switch event to a switch log reader.
2463 * Must be called with ctx->state_mutex held.
2465 void spu_switch_log_notify(struct spu
*spu
, struct spu_context
*ctx
,
2468 if (!ctx
->switch_log
)
2471 if (spufs_switch_log_avail(ctx
) > 1) {
2472 struct switch_log_entry
*p
;
2474 p
= ctx
->switch_log
->log
+ ctx
->switch_log
->head
;
2475 ktime_get_ts64(&p
->tstamp
);
2476 p
->timebase
= get_tb();
2477 p
->spu_id
= spu
? spu
->number
: -1;
2481 ctx
->switch_log
->head
=
2482 (ctx
->switch_log
->head
+ 1) % SWITCH_LOG_BUFSIZE
;
2485 wake_up(&ctx
->switch_log
->wait
);
2488 static int spufs_show_ctx(struct seq_file
*s
, void *private)
2490 struct spu_context
*ctx
= s
->private;
2493 mutex_lock(&ctx
->state_mutex
);
2495 struct spu
*spu
= ctx
->spu
;
2496 struct spu_priv2 __iomem
*priv2
= spu
->priv2
;
2498 spin_lock_irq(&spu
->register_lock
);
2499 mfc_control_RW
= in_be64(&priv2
->mfc_control_RW
);
2500 spin_unlock_irq(&spu
->register_lock
);
2502 struct spu_state
*csa
= &ctx
->csa
;
2504 mfc_control_RW
= csa
->priv2
.mfc_control_RW
;
2507 seq_printf(s
, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)"
2508 " %c %llx %llx %llx %llx %x %x\n",
2509 ctx
->state
== SPU_STATE_SAVED
? 'S' : 'R',
2514 ctx
->spu
? ctx
->spu
->number
: -1,
2515 !list_empty(&ctx
->rq
) ? 'q' : ' ',
2516 ctx
->csa
.class_0_pending
,
2517 ctx
->csa
.class_0_dar
,
2518 ctx
->csa
.class_1_dsisr
,
2520 ctx
->ops
->runcntl_read(ctx
),
2521 ctx
->ops
->status_read(ctx
));
2523 mutex_unlock(&ctx
->state_mutex
);
2528 static int spufs_ctx_open(struct inode
*inode
, struct file
*file
)
2530 return single_open(file
, spufs_show_ctx
, SPUFS_I(inode
)->i_ctx
);
2533 static const struct file_operations spufs_ctx_fops
= {
2534 .open
= spufs_ctx_open
,
2536 .llseek
= seq_lseek
,
2537 .release
= single_release
,
2540 const struct spufs_tree_descr spufs_dir_contents
[] = {
2541 { "capabilities", &spufs_caps_fops
, 0444, },
2542 { "mem", &spufs_mem_fops
, 0666, LS_SIZE
, },
2543 { "regs", &spufs_regs_fops
, 0666, sizeof(struct spu_reg128
[128]), },
2544 { "mbox", &spufs_mbox_fops
, 0444, },
2545 { "ibox", &spufs_ibox_fops
, 0444, },
2546 { "wbox", &spufs_wbox_fops
, 0222, },
2547 { "mbox_stat", &spufs_mbox_stat_fops
, 0444, sizeof(u32
), },
2548 { "ibox_stat", &spufs_ibox_stat_fops
, 0444, sizeof(u32
), },
2549 { "wbox_stat", &spufs_wbox_stat_fops
, 0444, sizeof(u32
), },
2550 { "signal1", &spufs_signal1_fops
, 0666, },
2551 { "signal2", &spufs_signal2_fops
, 0666, },
2552 { "signal1_type", &spufs_signal1_type
, 0666, },
2553 { "signal2_type", &spufs_signal2_type
, 0666, },
2554 { "cntl", &spufs_cntl_fops
, 0666, },
2555 { "fpcr", &spufs_fpcr_fops
, 0666, sizeof(struct spu_reg128
), },
2556 { "lslr", &spufs_lslr_ops
, 0444, },
2557 { "mfc", &spufs_mfc_fops
, 0666, },
2558 { "mss", &spufs_mss_fops
, 0666, },
2559 { "npc", &spufs_npc_ops
, 0666, },
2560 { "srr0", &spufs_srr0_ops
, 0666, },
2561 { "decr", &spufs_decr_ops
, 0666, },
2562 { "decr_status", &spufs_decr_status_ops
, 0666, },
2563 { "event_mask", &spufs_event_mask_ops
, 0666, },
2564 { "event_status", &spufs_event_status_ops
, 0444, },
2565 { "psmap", &spufs_psmap_fops
, 0666, SPUFS_PS_MAP_SIZE
, },
2566 { "phys-id", &spufs_id_ops
, 0666, },
2567 { "object-id", &spufs_object_id_ops
, 0666, },
2568 { "mbox_info", &spufs_mbox_info_fops
, 0444, sizeof(u32
), },
2569 { "ibox_info", &spufs_ibox_info_fops
, 0444, sizeof(u32
), },
2570 { "wbox_info", &spufs_wbox_info_fops
, 0444, sizeof(u32
), },
2571 { "dma_info", &spufs_dma_info_fops
, 0444,
2572 sizeof(struct spu_dma_info
), },
2573 { "proxydma_info", &spufs_proxydma_info_fops
, 0444,
2574 sizeof(struct spu_proxydma_info
)},
2575 { "tid", &spufs_tid_fops
, 0444, },
2576 { "stat", &spufs_stat_fops
, 0444, },
2577 { "switch_log", &spufs_switch_log_fops
, 0444 },
2581 const struct spufs_tree_descr spufs_dir_nosched_contents
[] = {
2582 { "capabilities", &spufs_caps_fops
, 0444, },
2583 { "mem", &spufs_mem_fops
, 0666, LS_SIZE
, },
2584 { "mbox", &spufs_mbox_fops
, 0444, },
2585 { "ibox", &spufs_ibox_fops
, 0444, },
2586 { "wbox", &spufs_wbox_fops
, 0222, },
2587 { "mbox_stat", &spufs_mbox_stat_fops
, 0444, sizeof(u32
), },
2588 { "ibox_stat", &spufs_ibox_stat_fops
, 0444, sizeof(u32
), },
2589 { "wbox_stat", &spufs_wbox_stat_fops
, 0444, sizeof(u32
), },
2590 { "signal1", &spufs_signal1_nosched_fops
, 0222, },
2591 { "signal2", &spufs_signal2_nosched_fops
, 0222, },
2592 { "signal1_type", &spufs_signal1_type
, 0666, },
2593 { "signal2_type", &spufs_signal2_type
, 0666, },
2594 { "mss", &spufs_mss_fops
, 0666, },
2595 { "mfc", &spufs_mfc_fops
, 0666, },
2596 { "cntl", &spufs_cntl_fops
, 0666, },
2597 { "npc", &spufs_npc_ops
, 0666, },
2598 { "psmap", &spufs_psmap_fops
, 0666, SPUFS_PS_MAP_SIZE
, },
2599 { "phys-id", &spufs_id_ops
, 0666, },
2600 { "object-id", &spufs_object_id_ops
, 0666, },
2601 { "tid", &spufs_tid_fops
, 0444, },
2602 { "stat", &spufs_stat_fops
, 0444, },
2606 const struct spufs_tree_descr spufs_dir_debug_contents
[] = {
2607 { ".ctx", &spufs_ctx_fops
, 0444, },
2611 const struct spufs_coredump_reader spufs_coredump_read
[] = {
2612 { "regs", spufs_regs_dump
, NULL
, sizeof(struct spu_reg128
[128])},
2613 { "fpcr", spufs_fpcr_dump
, NULL
, sizeof(struct spu_reg128
) },
2614 { "lslr", NULL
, spufs_lslr_get
, 19 },
2615 { "decr", NULL
, spufs_decr_get
, 19 },
2616 { "decr_status", NULL
, spufs_decr_status_get
, 19 },
2617 { "mem", spufs_mem_dump
, NULL
, LS_SIZE
, },
2618 { "signal1", spufs_signal1_dump
, NULL
, sizeof(u32
) },
2619 { "signal1_type", NULL
, spufs_signal1_type_get
, 19 },
2620 { "signal2", spufs_signal2_dump
, NULL
, sizeof(u32
) },
2621 { "signal2_type", NULL
, spufs_signal2_type_get
, 19 },
2622 { "event_mask", NULL
, spufs_event_mask_get
, 19 },
2623 { "event_status", NULL
, spufs_event_status_get
, 19 },
2624 { "mbox_info", spufs_mbox_info_dump
, NULL
, sizeof(u32
) },
2625 { "ibox_info", spufs_ibox_info_dump
, NULL
, sizeof(u32
) },
2626 { "wbox_info", spufs_wbox_info_dump
, NULL
, 4 * sizeof(u32
)},
2627 { "dma_info", spufs_dma_info_dump
, NULL
, sizeof(struct spu_dma_info
)},
2628 { "proxydma_info", spufs_proxydma_info_dump
,
2629 NULL
, sizeof(struct spu_proxydma_info
)},
2630 { "object-id", NULL
, spufs_object_id_get
, 19 },
2631 { "npc", NULL
, spufs_npc_get
, 19 },