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Commit | Line | Data |
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67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
27 | #include <linux/module.h> | |
d88cfffa | 28 | #include <linux/pagemap.h> |
67207b96 | 29 | #include <linux/poll.h> |
5110459f | 30 | #include <linux/ptrace.h> |
67207b96 AB |
31 | |
32 | #include <asm/io.h> | |
33 | #include <asm/semaphore.h> | |
34 | #include <asm/spu.h> | |
b9e3bd77 | 35 | #include <asm/spu_info.h> |
67207b96 AB |
36 | #include <asm/uaccess.h> |
37 | ||
38 | #include "spufs.h" | |
39 | ||
27d5bf2a BH |
40 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
41 | ||
8b3d6663 | 42 | |
67207b96 AB |
43 | static int |
44 | spufs_mem_open(struct inode *inode, struct file *file) | |
45 | { | |
46 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 MN |
47 | struct spu_context *ctx = i->i_ctx; |
48 | file->private_data = ctx; | |
49 | file->f_mapping = inode->i_mapping; | |
50 | ctx->local_store = inode->i_mapping; | |
67207b96 AB |
51 | return 0; |
52 | } | |
53 | ||
54 | static ssize_t | |
55 | spufs_mem_read(struct file *file, char __user *buffer, | |
56 | size_t size, loff_t *pos) | |
57 | { | |
8b3d6663 AB |
58 | struct spu_context *ctx = file->private_data; |
59 | char *local_store; | |
67207b96 AB |
60 | int ret; |
61 | ||
8b3d6663 | 62 | spu_acquire(ctx); |
67207b96 | 63 | |
8b3d6663 AB |
64 | local_store = ctx->ops->get_ls(ctx); |
65 | ret = simple_read_from_buffer(buffer, size, pos, local_store, LS_SIZE); | |
67207b96 | 66 | |
8b3d6663 | 67 | spu_release(ctx); |
67207b96 AB |
68 | return ret; |
69 | } | |
70 | ||
71 | static ssize_t | |
72 | spufs_mem_write(struct file *file, const char __user *buffer, | |
73 | size_t size, loff_t *pos) | |
74 | { | |
75 | struct spu_context *ctx = file->private_data; | |
8b3d6663 AB |
76 | char *local_store; |
77 | int ret; | |
67207b96 AB |
78 | |
79 | size = min_t(ssize_t, LS_SIZE - *pos, size); | |
80 | if (size <= 0) | |
81 | return -EFBIG; | |
82 | *pos += size; | |
8b3d6663 AB |
83 | |
84 | spu_acquire(ctx); | |
85 | ||
86 | local_store = ctx->ops->get_ls(ctx); | |
87 | ret = copy_from_user(local_store + *pos - size, | |
88 | buffer, size) ? -EFAULT : size; | |
89 | ||
90 | spu_release(ctx); | |
91 | return ret; | |
67207b96 AB |
92 | } |
93 | ||
8b3d6663 AB |
94 | static struct page * |
95 | spufs_mem_mmap_nopage(struct vm_area_struct *vma, | |
96 | unsigned long address, int *type) | |
97 | { | |
98 | struct page *page = NOPAGE_SIGBUS; | |
99 | ||
100 | struct spu_context *ctx = vma->vm_file->private_data; | |
101 | unsigned long offset = address - vma->vm_start; | |
102 | offset += vma->vm_pgoff << PAGE_SHIFT; | |
103 | ||
104 | spu_acquire(ctx); | |
105 | ||
ac91cb8d AB |
106 | if (ctx->state == SPU_STATE_SAVED) { |
107 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
108 | & ~(_PAGE_NO_CACHE | _PAGE_GUARDED)); | |
8b3d6663 | 109 | page = vmalloc_to_page(ctx->csa.lscsa->ls + offset); |
ac91cb8d AB |
110 | } else { |
111 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
112 | | _PAGE_NO_CACHE | _PAGE_GUARDED); | |
8b3d6663 AB |
113 | page = pfn_to_page((ctx->spu->local_store_phys + offset) |
114 | >> PAGE_SHIFT); | |
ac91cb8d | 115 | } |
8b3d6663 AB |
116 | spu_release(ctx); |
117 | ||
118 | if (type) | |
119 | *type = VM_FAULT_MINOR; | |
120 | ||
d88cfffa | 121 | page_cache_get(page); |
8b3d6663 AB |
122 | return page; |
123 | } | |
124 | ||
125 | static struct vm_operations_struct spufs_mem_mmap_vmops = { | |
126 | .nopage = spufs_mem_mmap_nopage, | |
127 | }; | |
128 | ||
67207b96 AB |
129 | static int |
130 | spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) | |
131 | { | |
8b3d6663 AB |
132 | if (!(vma->vm_flags & VM_SHARED)) |
133 | return -EINVAL; | |
67207b96 | 134 | |
5c3ecd65 | 135 | vma->vm_flags |= VM_IO; |
8b3d6663 AB |
136 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
137 | | _PAGE_NO_CACHE); | |
138 | ||
139 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
140 | return 0; |
141 | } | |
142 | ||
143 | static struct file_operations spufs_mem_fops = { | |
144 | .open = spufs_mem_open, | |
145 | .read = spufs_mem_read, | |
146 | .write = spufs_mem_write, | |
8b3d6663 | 147 | .llseek = generic_file_llseek, |
67207b96 | 148 | .mmap = spufs_mem_mmap, |
8b3d6663 AB |
149 | }; |
150 | ||
6df10a82 MN |
151 | static struct page *spufs_ps_nopage(struct vm_area_struct *vma, |
152 | unsigned long address, | |
27d5bf2a BH |
153 | int *type, unsigned long ps_offs, |
154 | unsigned long ps_size) | |
6df10a82 MN |
155 | { |
156 | struct page *page = NOPAGE_SIGBUS; | |
157 | int fault_type = VM_FAULT_SIGBUS; | |
158 | struct spu_context *ctx = vma->vm_file->private_data; | |
159 | unsigned long offset = address - vma->vm_start; | |
160 | unsigned long area; | |
161 | int ret; | |
162 | ||
163 | offset += vma->vm_pgoff << PAGE_SHIFT; | |
27d5bf2a | 164 | if (offset >= ps_size) |
6df10a82 MN |
165 | goto out; |
166 | ||
167 | ret = spu_acquire_runnable(ctx); | |
168 | if (ret) | |
169 | goto out; | |
170 | ||
171 | area = ctx->spu->problem_phys + ps_offs; | |
172 | page = pfn_to_page((area + offset) >> PAGE_SHIFT); | |
173 | fault_type = VM_FAULT_MINOR; | |
174 | page_cache_get(page); | |
175 | ||
176 | spu_release(ctx); | |
177 | ||
178 | out: | |
179 | if (type) | |
180 | *type = fault_type; | |
181 | ||
182 | return page; | |
183 | } | |
184 | ||
27d5bf2a | 185 | #if SPUFS_MMAP_4K |
6df10a82 MN |
186 | static struct page *spufs_cntl_mmap_nopage(struct vm_area_struct *vma, |
187 | unsigned long address, int *type) | |
188 | { | |
27d5bf2a | 189 | return spufs_ps_nopage(vma, address, type, 0x4000, 0x1000); |
6df10a82 MN |
190 | } |
191 | ||
192 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { | |
193 | .nopage = spufs_cntl_mmap_nopage, | |
194 | }; | |
195 | ||
196 | /* | |
197 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
198 | */ |
199 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
200 | { | |
201 | if (!(vma->vm_flags & VM_SHARED)) | |
202 | return -EINVAL; | |
203 | ||
5c3ecd65 | 204 | vma->vm_flags |= VM_IO; |
6df10a82 | 205 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 206 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
207 | |
208 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
209 | return 0; | |
210 | } | |
27d5bf2a BH |
211 | #else /* SPUFS_MMAP_4K */ |
212 | #define spufs_cntl_mmap NULL | |
213 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 214 | |
e1dbff2b | 215 | static u64 spufs_cntl_get(void *data) |
6df10a82 | 216 | { |
e1dbff2b AB |
217 | struct spu_context *ctx = data; |
218 | u64 val; | |
6df10a82 | 219 | |
e1dbff2b AB |
220 | spu_acquire(ctx); |
221 | val = ctx->ops->status_read(ctx); | |
222 | spu_release(ctx); | |
223 | ||
224 | return val; | |
6df10a82 MN |
225 | } |
226 | ||
e1dbff2b | 227 | static void spufs_cntl_set(void *data, u64 val) |
6df10a82 | 228 | { |
e1dbff2b AB |
229 | struct spu_context *ctx = data; |
230 | ||
231 | spu_acquire(ctx); | |
232 | ctx->ops->runcntl_write(ctx, val); | |
233 | spu_release(ctx); | |
6df10a82 MN |
234 | } |
235 | ||
e1dbff2b | 236 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 237 | { |
e1dbff2b AB |
238 | struct spufs_inode_info *i = SPUFS_I(inode); |
239 | struct spu_context *ctx = i->i_ctx; | |
240 | ||
241 | file->private_data = ctx; | |
242 | file->f_mapping = inode->i_mapping; | |
243 | ctx->cntl = inode->i_mapping; | |
244 | return simple_attr_open(inode, file, spufs_cntl_get, | |
245 | spufs_cntl_set, "0x%08lx"); | |
6df10a82 MN |
246 | } |
247 | ||
248 | static struct file_operations spufs_cntl_fops = { | |
249 | .open = spufs_cntl_open, | |
654e4aee | 250 | .release = simple_attr_close, |
e1dbff2b AB |
251 | .read = simple_attr_read, |
252 | .write = simple_attr_write, | |
6df10a82 | 253 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
254 | }; |
255 | ||
8b3d6663 AB |
256 | static int |
257 | spufs_regs_open(struct inode *inode, struct file *file) | |
258 | { | |
259 | struct spufs_inode_info *i = SPUFS_I(inode); | |
260 | file->private_data = i->i_ctx; | |
261 | return 0; | |
262 | } | |
263 | ||
264 | static ssize_t | |
265 | spufs_regs_read(struct file *file, char __user *buffer, | |
266 | size_t size, loff_t *pos) | |
267 | { | |
268 | struct spu_context *ctx = file->private_data; | |
269 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
270 | int ret; | |
271 | ||
272 | spu_acquire_saved(ctx); | |
273 | ||
274 | ret = simple_read_from_buffer(buffer, size, pos, | |
275 | lscsa->gprs, sizeof lscsa->gprs); | |
276 | ||
277 | spu_release(ctx); | |
278 | return ret; | |
279 | } | |
280 | ||
281 | static ssize_t | |
282 | spufs_regs_write(struct file *file, const char __user *buffer, | |
283 | size_t size, loff_t *pos) | |
284 | { | |
285 | struct spu_context *ctx = file->private_data; | |
286 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
287 | int ret; | |
288 | ||
289 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); | |
290 | if (size <= 0) | |
291 | return -EFBIG; | |
292 | *pos += size; | |
293 | ||
294 | spu_acquire_saved(ctx); | |
295 | ||
296 | ret = copy_from_user(lscsa->gprs + *pos - size, | |
297 | buffer, size) ? -EFAULT : size; | |
298 | ||
299 | spu_release(ctx); | |
300 | return ret; | |
301 | } | |
302 | ||
303 | static struct file_operations spufs_regs_fops = { | |
304 | .open = spufs_regs_open, | |
305 | .read = spufs_regs_read, | |
306 | .write = spufs_regs_write, | |
67207b96 AB |
307 | .llseek = generic_file_llseek, |
308 | }; | |
309 | ||
8b3d6663 AB |
310 | static ssize_t |
311 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
312 | size_t size, loff_t * pos) | |
313 | { | |
314 | struct spu_context *ctx = file->private_data; | |
315 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
316 | int ret; | |
317 | ||
318 | spu_acquire_saved(ctx); | |
319 | ||
320 | ret = simple_read_from_buffer(buffer, size, pos, | |
321 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
322 | ||
323 | spu_release(ctx); | |
324 | return ret; | |
325 | } | |
326 | ||
327 | static ssize_t | |
328 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
329 | size_t size, loff_t * pos) | |
330 | { | |
331 | struct spu_context *ctx = file->private_data; | |
332 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
333 | int ret; | |
334 | ||
335 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); | |
336 | if (size <= 0) | |
337 | return -EFBIG; | |
338 | *pos += size; | |
339 | ||
340 | spu_acquire_saved(ctx); | |
341 | ||
342 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, | |
343 | buffer, size) ? -EFAULT : size; | |
344 | ||
345 | spu_release(ctx); | |
346 | return ret; | |
347 | } | |
348 | ||
349 | static struct file_operations spufs_fpcr_fops = { | |
350 | .open = spufs_regs_open, | |
351 | .read = spufs_fpcr_read, | |
352 | .write = spufs_fpcr_write, | |
353 | .llseek = generic_file_llseek, | |
354 | }; | |
355 | ||
67207b96 AB |
356 | /* generic open function for all pipe-like files */ |
357 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
358 | { | |
359 | struct spufs_inode_info *i = SPUFS_I(inode); | |
360 | file->private_data = i->i_ctx; | |
361 | ||
362 | return nonseekable_open(inode, file); | |
363 | } | |
364 | ||
cdcc89bb AB |
365 | /* |
366 | * Read as many bytes from the mailbox as possible, until | |
367 | * one of the conditions becomes true: | |
368 | * | |
369 | * - no more data available in the mailbox | |
370 | * - end of the user provided buffer | |
371 | * - end of the mapped area | |
372 | */ | |
67207b96 AB |
373 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
374 | size_t len, loff_t *pos) | |
375 | { | |
8b3d6663 | 376 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
377 | u32 mbox_data, __user *udata; |
378 | ssize_t count; | |
67207b96 AB |
379 | |
380 | if (len < 4) | |
381 | return -EINVAL; | |
382 | ||
cdcc89bb AB |
383 | if (!access_ok(VERIFY_WRITE, buf, len)) |
384 | return -EFAULT; | |
385 | ||
386 | udata = (void __user *)buf; | |
387 | ||
8b3d6663 | 388 | spu_acquire(ctx); |
274cef5e | 389 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
390 | int ret; |
391 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
392 | if (ret == 0) | |
393 | break; | |
394 | ||
395 | /* | |
396 | * at the end of the mapped area, we can fault | |
397 | * but still need to return the data we have | |
398 | * read successfully so far. | |
399 | */ | |
400 | ret = __put_user(mbox_data, udata); | |
401 | if (ret) { | |
402 | if (!count) | |
403 | count = -EFAULT; | |
404 | break; | |
405 | } | |
406 | } | |
8b3d6663 | 407 | spu_release(ctx); |
67207b96 | 408 | |
cdcc89bb AB |
409 | if (!count) |
410 | count = -EAGAIN; | |
67207b96 | 411 | |
cdcc89bb | 412 | return count; |
67207b96 AB |
413 | } |
414 | ||
415 | static struct file_operations spufs_mbox_fops = { | |
416 | .open = spufs_pipe_open, | |
417 | .read = spufs_mbox_read, | |
418 | }; | |
419 | ||
420 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
421 | size_t len, loff_t *pos) | |
422 | { | |
8b3d6663 | 423 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
424 | u32 mbox_stat; |
425 | ||
426 | if (len < 4) | |
427 | return -EINVAL; | |
428 | ||
8b3d6663 AB |
429 | spu_acquire(ctx); |
430 | ||
431 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
432 | ||
433 | spu_release(ctx); | |
67207b96 AB |
434 | |
435 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
436 | return -EFAULT; | |
437 | ||
438 | return 4; | |
439 | } | |
440 | ||
441 | static struct file_operations spufs_mbox_stat_fops = { | |
442 | .open = spufs_pipe_open, | |
443 | .read = spufs_mbox_stat_read, | |
444 | }; | |
445 | ||
446 | /* low-level ibox access function */ | |
8b3d6663 | 447 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 448 | { |
8b3d6663 AB |
449 | return ctx->ops->ibox_read(ctx, data); |
450 | } | |
67207b96 | 451 | |
8b3d6663 AB |
452 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
453 | { | |
454 | struct spu_context *ctx = file->private_data; | |
67207b96 | 455 | |
8b3d6663 | 456 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 457 | } |
67207b96 | 458 | |
8b3d6663 AB |
459 | /* interrupt-level ibox callback function. */ |
460 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 461 | { |
8b3d6663 AB |
462 | struct spu_context *ctx = spu->ctx; |
463 | ||
464 | wake_up_all(&ctx->ibox_wq); | |
465 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
466 | } |
467 | ||
cdcc89bb AB |
468 | /* |
469 | * Read as many bytes from the interrupt mailbox as possible, until | |
470 | * one of the conditions becomes true: | |
471 | * | |
472 | * - no more data available in the mailbox | |
473 | * - end of the user provided buffer | |
474 | * - end of the mapped area | |
475 | * | |
476 | * If the file is opened without O_NONBLOCK, we wait here until | |
477 | * any data is available, but return when we have been able to | |
478 | * read something. | |
479 | */ | |
67207b96 AB |
480 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
481 | size_t len, loff_t *pos) | |
482 | { | |
8b3d6663 | 483 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
484 | u32 ibox_data, __user *udata; |
485 | ssize_t count; | |
67207b96 AB |
486 | |
487 | if (len < 4) | |
488 | return -EINVAL; | |
489 | ||
cdcc89bb AB |
490 | if (!access_ok(VERIFY_WRITE, buf, len)) |
491 | return -EFAULT; | |
492 | ||
493 | udata = (void __user *)buf; | |
494 | ||
8b3d6663 | 495 | spu_acquire(ctx); |
67207b96 | 496 | |
cdcc89bb AB |
497 | /* wait only for the first element */ |
498 | count = 0; | |
67207b96 | 499 | if (file->f_flags & O_NONBLOCK) { |
8b3d6663 | 500 | if (!spu_ibox_read(ctx, &ibox_data)) |
cdcc89bb | 501 | count = -EAGAIN; |
67207b96 | 502 | } else { |
cdcc89bb | 503 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
67207b96 | 504 | } |
cdcc89bb AB |
505 | if (count) |
506 | goto out; | |
67207b96 | 507 | |
cdcc89bb AB |
508 | /* if we can't write at all, return -EFAULT */ |
509 | count = __put_user(ibox_data, udata); | |
510 | if (count) | |
511 | goto out; | |
8b3d6663 | 512 | |
cdcc89bb AB |
513 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
514 | int ret; | |
515 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
516 | if (ret == 0) | |
517 | break; | |
518 | /* | |
519 | * at the end of the mapped area, we can fault | |
520 | * but still need to return the data we have | |
521 | * read successfully so far. | |
522 | */ | |
523 | ret = __put_user(ibox_data, udata); | |
524 | if (ret) | |
525 | break; | |
526 | } | |
67207b96 | 527 | |
cdcc89bb AB |
528 | out: |
529 | spu_release(ctx); | |
67207b96 | 530 | |
cdcc89bb | 531 | return count; |
67207b96 AB |
532 | } |
533 | ||
534 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
535 | { | |
8b3d6663 | 536 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
537 | unsigned int mask; |
538 | ||
8b3d6663 | 539 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 540 | |
3a843d7c AB |
541 | spu_acquire(ctx); |
542 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); | |
543 | spu_release(ctx); | |
67207b96 AB |
544 | |
545 | return mask; | |
546 | } | |
547 | ||
548 | static struct file_operations spufs_ibox_fops = { | |
549 | .open = spufs_pipe_open, | |
550 | .read = spufs_ibox_read, | |
551 | .poll = spufs_ibox_poll, | |
552 | .fasync = spufs_ibox_fasync, | |
553 | }; | |
554 | ||
555 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
556 | size_t len, loff_t *pos) | |
557 | { | |
8b3d6663 | 558 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
559 | u32 ibox_stat; |
560 | ||
561 | if (len < 4) | |
562 | return -EINVAL; | |
563 | ||
8b3d6663 AB |
564 | spu_acquire(ctx); |
565 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; | |
566 | spu_release(ctx); | |
67207b96 AB |
567 | |
568 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
569 | return -EFAULT; | |
570 | ||
571 | return 4; | |
572 | } | |
573 | ||
574 | static struct file_operations spufs_ibox_stat_fops = { | |
575 | .open = spufs_pipe_open, | |
576 | .read = spufs_ibox_stat_read, | |
577 | }; | |
578 | ||
579 | /* low-level mailbox write */ | |
8b3d6663 | 580 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 581 | { |
8b3d6663 AB |
582 | return ctx->ops->wbox_write(ctx, data); |
583 | } | |
67207b96 | 584 | |
8b3d6663 AB |
585 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
586 | { | |
587 | struct spu_context *ctx = file->private_data; | |
588 | int ret; | |
67207b96 | 589 | |
8b3d6663 | 590 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 591 | |
67207b96 AB |
592 | return ret; |
593 | } | |
67207b96 | 594 | |
8b3d6663 AB |
595 | /* interrupt-level wbox callback function. */ |
596 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 597 | { |
8b3d6663 AB |
598 | struct spu_context *ctx = spu->ctx; |
599 | ||
600 | wake_up_all(&ctx->wbox_wq); | |
601 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
602 | } |
603 | ||
cdcc89bb AB |
604 | /* |
605 | * Write as many bytes to the interrupt mailbox as possible, until | |
606 | * one of the conditions becomes true: | |
607 | * | |
608 | * - the mailbox is full | |
609 | * - end of the user provided buffer | |
610 | * - end of the mapped area | |
611 | * | |
612 | * If the file is opened without O_NONBLOCK, we wait here until | |
613 | * space is availabyl, but return when we have been able to | |
614 | * write something. | |
615 | */ | |
67207b96 AB |
616 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
617 | size_t len, loff_t *pos) | |
618 | { | |
8b3d6663 | 619 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
620 | u32 wbox_data, __user *udata; |
621 | ssize_t count; | |
67207b96 AB |
622 | |
623 | if (len < 4) | |
624 | return -EINVAL; | |
625 | ||
cdcc89bb AB |
626 | udata = (void __user *)buf; |
627 | if (!access_ok(VERIFY_READ, buf, len)) | |
628 | return -EFAULT; | |
629 | ||
630 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
631 | return -EFAULT; |
632 | ||
8b3d6663 AB |
633 | spu_acquire(ctx); |
634 | ||
cdcc89bb AB |
635 | /* |
636 | * make sure we can at least write one element, by waiting | |
637 | * in case of !O_NONBLOCK | |
638 | */ | |
639 | count = 0; | |
67207b96 | 640 | if (file->f_flags & O_NONBLOCK) { |
8b3d6663 | 641 | if (!spu_wbox_write(ctx, wbox_data)) |
cdcc89bb | 642 | count = -EAGAIN; |
67207b96 | 643 | } else { |
cdcc89bb | 644 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
67207b96 AB |
645 | } |
646 | ||
cdcc89bb AB |
647 | if (count) |
648 | goto out; | |
8b3d6663 | 649 | |
cdcc89bb AB |
650 | /* write aѕ much as possible */ |
651 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { | |
652 | int ret; | |
653 | ret = __get_user(wbox_data, udata); | |
654 | if (ret) | |
655 | break; | |
656 | ||
657 | ret = spu_wbox_write(ctx, wbox_data); | |
658 | if (ret == 0) | |
659 | break; | |
660 | } | |
661 | ||
662 | out: | |
663 | spu_release(ctx); | |
664 | return count; | |
67207b96 AB |
665 | } |
666 | ||
667 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
668 | { | |
8b3d6663 | 669 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
670 | unsigned int mask; |
671 | ||
8b3d6663 | 672 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 673 | |
3a843d7c AB |
674 | spu_acquire(ctx); |
675 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); | |
676 | spu_release(ctx); | |
67207b96 AB |
677 | |
678 | return mask; | |
679 | } | |
680 | ||
681 | static struct file_operations spufs_wbox_fops = { | |
682 | .open = spufs_pipe_open, | |
683 | .write = spufs_wbox_write, | |
684 | .poll = spufs_wbox_poll, | |
685 | .fasync = spufs_wbox_fasync, | |
686 | }; | |
687 | ||
688 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
689 | size_t len, loff_t *pos) | |
690 | { | |
8b3d6663 | 691 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
692 | u32 wbox_stat; |
693 | ||
694 | if (len < 4) | |
695 | return -EINVAL; | |
696 | ||
8b3d6663 AB |
697 | spu_acquire(ctx); |
698 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; | |
699 | spu_release(ctx); | |
67207b96 AB |
700 | |
701 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
702 | return -EFAULT; | |
703 | ||
704 | return 4; | |
705 | } | |
706 | ||
707 | static struct file_operations spufs_wbox_stat_fops = { | |
708 | .open = spufs_pipe_open, | |
709 | .read = spufs_wbox_stat_read, | |
710 | }; | |
711 | ||
6df10a82 MN |
712 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
713 | { | |
714 | struct spufs_inode_info *i = SPUFS_I(inode); | |
715 | struct spu_context *ctx = i->i_ctx; | |
716 | file->private_data = ctx; | |
717 | file->f_mapping = inode->i_mapping; | |
718 | ctx->signal1 = inode->i_mapping; | |
719 | return nonseekable_open(inode, file); | |
720 | } | |
721 | ||
67207b96 AB |
722 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
723 | size_t len, loff_t *pos) | |
724 | { | |
8b3d6663 | 725 | struct spu_context *ctx = file->private_data; |
17f88ceb | 726 | int ret = 0; |
67207b96 AB |
727 | u32 data; |
728 | ||
67207b96 AB |
729 | if (len < 4) |
730 | return -EINVAL; | |
731 | ||
17f88ceb DGM |
732 | spu_acquire_saved(ctx); |
733 | if (ctx->csa.spu_chnlcnt_RW[3]) { | |
734 | data = ctx->csa.spu_chnldata_RW[3]; | |
735 | ret = 4; | |
736 | } | |
8b3d6663 AB |
737 | spu_release(ctx); |
738 | ||
17f88ceb DGM |
739 | if (!ret) |
740 | goto out; | |
741 | ||
67207b96 AB |
742 | if (copy_to_user(buf, &data, 4)) |
743 | return -EFAULT; | |
744 | ||
17f88ceb DGM |
745 | out: |
746 | return ret; | |
67207b96 AB |
747 | } |
748 | ||
749 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, | |
750 | size_t len, loff_t *pos) | |
751 | { | |
752 | struct spu_context *ctx; | |
67207b96 AB |
753 | u32 data; |
754 | ||
755 | ctx = file->private_data; | |
67207b96 AB |
756 | |
757 | if (len < 4) | |
758 | return -EINVAL; | |
759 | ||
760 | if (copy_from_user(&data, buf, 4)) | |
761 | return -EFAULT; | |
762 | ||
8b3d6663 AB |
763 | spu_acquire(ctx); |
764 | ctx->ops->signal1_write(ctx, data); | |
765 | spu_release(ctx); | |
67207b96 AB |
766 | |
767 | return 4; | |
768 | } | |
769 | ||
6df10a82 MN |
770 | static struct page *spufs_signal1_mmap_nopage(struct vm_area_struct *vma, |
771 | unsigned long address, int *type) | |
772 | { | |
27d5bf2a BH |
773 | #if PAGE_SIZE == 0x1000 |
774 | return spufs_ps_nopage(vma, address, type, 0x14000, 0x1000); | |
775 | #elif PAGE_SIZE == 0x10000 | |
776 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
777 | * signal 1 and 2 area | |
778 | */ | |
779 | return spufs_ps_nopage(vma, address, type, 0x10000, 0x10000); | |
780 | #else | |
781 | #error unsupported page size | |
782 | #endif | |
6df10a82 MN |
783 | } |
784 | ||
785 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { | |
786 | .nopage = spufs_signal1_mmap_nopage, | |
787 | }; | |
788 | ||
789 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
790 | { | |
791 | if (!(vma->vm_flags & VM_SHARED)) | |
792 | return -EINVAL; | |
793 | ||
5c3ecd65 | 794 | vma->vm_flags |= VM_IO; |
6df10a82 | 795 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 796 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
797 | |
798 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
799 | return 0; | |
800 | } | |
6df10a82 | 801 | |
67207b96 | 802 | static struct file_operations spufs_signal1_fops = { |
6df10a82 | 803 | .open = spufs_signal1_open, |
67207b96 AB |
804 | .read = spufs_signal1_read, |
805 | .write = spufs_signal1_write, | |
6df10a82 | 806 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
807 | }; |
808 | ||
6df10a82 MN |
809 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
810 | { | |
811 | struct spufs_inode_info *i = SPUFS_I(inode); | |
812 | struct spu_context *ctx = i->i_ctx; | |
813 | file->private_data = ctx; | |
814 | file->f_mapping = inode->i_mapping; | |
815 | ctx->signal2 = inode->i_mapping; | |
816 | return nonseekable_open(inode, file); | |
817 | } | |
818 | ||
67207b96 AB |
819 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, |
820 | size_t len, loff_t *pos) | |
821 | { | |
17f88ceb DGM |
822 | struct spu_context *ctx = file->private_data; |
823 | int ret = 0; | |
67207b96 AB |
824 | u32 data; |
825 | ||
67207b96 AB |
826 | if (len < 4) |
827 | return -EINVAL; | |
828 | ||
17f88ceb DGM |
829 | spu_acquire_saved(ctx); |
830 | if (ctx->csa.spu_chnlcnt_RW[4]) { | |
831 | data = ctx->csa.spu_chnldata_RW[4]; | |
832 | ret = 4; | |
833 | } | |
8b3d6663 AB |
834 | spu_release(ctx); |
835 | ||
17f88ceb DGM |
836 | if (!ret) |
837 | goto out; | |
838 | ||
67207b96 AB |
839 | if (copy_to_user(buf, &data, 4)) |
840 | return -EFAULT; | |
841 | ||
17f88ceb | 842 | out: |
67207b96 AB |
843 | return 4; |
844 | } | |
845 | ||
846 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
847 | size_t len, loff_t *pos) | |
848 | { | |
849 | struct spu_context *ctx; | |
67207b96 AB |
850 | u32 data; |
851 | ||
852 | ctx = file->private_data; | |
67207b96 AB |
853 | |
854 | if (len < 4) | |
855 | return -EINVAL; | |
856 | ||
857 | if (copy_from_user(&data, buf, 4)) | |
858 | return -EFAULT; | |
859 | ||
8b3d6663 AB |
860 | spu_acquire(ctx); |
861 | ctx->ops->signal2_write(ctx, data); | |
862 | spu_release(ctx); | |
67207b96 AB |
863 | |
864 | return 4; | |
865 | } | |
866 | ||
27d5bf2a | 867 | #if SPUFS_MMAP_4K |
6df10a82 MN |
868 | static struct page *spufs_signal2_mmap_nopage(struct vm_area_struct *vma, |
869 | unsigned long address, int *type) | |
870 | { | |
27d5bf2a BH |
871 | #if PAGE_SIZE == 0x1000 |
872 | return spufs_ps_nopage(vma, address, type, 0x1c000, 0x1000); | |
873 | #elif PAGE_SIZE == 0x10000 | |
874 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
875 | * signal 1 and 2 area | |
876 | */ | |
877 | return spufs_ps_nopage(vma, address, type, 0x10000, 0x10000); | |
878 | #else | |
879 | #error unsupported page size | |
880 | #endif | |
6df10a82 MN |
881 | } |
882 | ||
883 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { | |
884 | .nopage = spufs_signal2_mmap_nopage, | |
885 | }; | |
886 | ||
887 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
888 | { | |
889 | if (!(vma->vm_flags & VM_SHARED)) | |
890 | return -EINVAL; | |
891 | ||
5c3ecd65 | 892 | vma->vm_flags |= VM_IO; |
6df10a82 | 893 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 894 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
895 | |
896 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
897 | return 0; | |
898 | } | |
27d5bf2a BH |
899 | #else /* SPUFS_MMAP_4K */ |
900 | #define spufs_signal2_mmap NULL | |
901 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 902 | |
67207b96 | 903 | static struct file_operations spufs_signal2_fops = { |
6df10a82 | 904 | .open = spufs_signal2_open, |
67207b96 AB |
905 | .read = spufs_signal2_read, |
906 | .write = spufs_signal2_write, | |
6df10a82 | 907 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
908 | }; |
909 | ||
910 | static void spufs_signal1_type_set(void *data, u64 val) | |
911 | { | |
912 | struct spu_context *ctx = data; | |
67207b96 | 913 | |
8b3d6663 AB |
914 | spu_acquire(ctx); |
915 | ctx->ops->signal1_type_set(ctx, val); | |
916 | spu_release(ctx); | |
67207b96 AB |
917 | } |
918 | ||
919 | static u64 spufs_signal1_type_get(void *data) | |
920 | { | |
921 | struct spu_context *ctx = data; | |
8b3d6663 AB |
922 | u64 ret; |
923 | ||
924 | spu_acquire(ctx); | |
925 | ret = ctx->ops->signal1_type_get(ctx); | |
926 | spu_release(ctx); | |
927 | ||
928 | return ret; | |
67207b96 AB |
929 | } |
930 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, | |
931 | spufs_signal1_type_set, "%llu"); | |
932 | ||
933 | static void spufs_signal2_type_set(void *data, u64 val) | |
934 | { | |
935 | struct spu_context *ctx = data; | |
67207b96 | 936 | |
8b3d6663 AB |
937 | spu_acquire(ctx); |
938 | ctx->ops->signal2_type_set(ctx, val); | |
939 | spu_release(ctx); | |
67207b96 AB |
940 | } |
941 | ||
942 | static u64 spufs_signal2_type_get(void *data) | |
943 | { | |
944 | struct spu_context *ctx = data; | |
8b3d6663 AB |
945 | u64 ret; |
946 | ||
947 | spu_acquire(ctx); | |
948 | ret = ctx->ops->signal2_type_get(ctx); | |
949 | spu_release(ctx); | |
950 | ||
951 | return ret; | |
67207b96 AB |
952 | } |
953 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, | |
954 | spufs_signal2_type_set, "%llu"); | |
955 | ||
27d5bf2a | 956 | #if SPUFS_MMAP_4K |
d9379c4b AB |
957 | static struct page *spufs_mss_mmap_nopage(struct vm_area_struct *vma, |
958 | unsigned long address, int *type) | |
959 | { | |
27d5bf2a | 960 | return spufs_ps_nopage(vma, address, type, 0x0000, 0x1000); |
d9379c4b AB |
961 | } |
962 | ||
963 | static struct vm_operations_struct spufs_mss_mmap_vmops = { | |
964 | .nopage = spufs_mss_mmap_nopage, | |
965 | }; | |
966 | ||
967 | /* | |
968 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
969 | */ |
970 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
971 | { | |
972 | if (!(vma->vm_flags & VM_SHARED)) | |
973 | return -EINVAL; | |
974 | ||
5c3ecd65 | 975 | vma->vm_flags |= VM_IO; |
d9379c4b | 976 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 977 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
d9379c4b AB |
978 | |
979 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
980 | return 0; | |
981 | } | |
27d5bf2a BH |
982 | #else /* SPUFS_MMAP_4K */ |
983 | #define spufs_mss_mmap NULL | |
984 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
985 | |
986 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
987 | { | |
988 | struct spufs_inode_info *i = SPUFS_I(inode); | |
989 | ||
990 | file->private_data = i->i_ctx; | |
991 | return nonseekable_open(inode, file); | |
992 | } | |
993 | ||
994 | static struct file_operations spufs_mss_fops = { | |
995 | .open = spufs_mss_open, | |
d9379c4b | 996 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
997 | }; |
998 | ||
999 | static struct page *spufs_psmap_mmap_nopage(struct vm_area_struct *vma, | |
1000 | unsigned long address, int *type) | |
1001 | { | |
1002 | return spufs_ps_nopage(vma, address, type, 0x0000, 0x20000); | |
1003 | } | |
1004 | ||
1005 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { | |
1006 | .nopage = spufs_psmap_mmap_nopage, | |
1007 | }; | |
1008 | ||
1009 | /* | |
1010 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1011 | */ | |
1012 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1013 | { | |
1014 | if (!(vma->vm_flags & VM_SHARED)) | |
1015 | return -EINVAL; | |
1016 | ||
5c3ecd65 | 1017 | vma->vm_flags |= VM_IO; |
27d5bf2a BH |
1018 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
1019 | | _PAGE_NO_CACHE | _PAGE_GUARDED); | |
1020 | ||
1021 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1026 | { | |
1027 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1028 | ||
1029 | file->private_data = i->i_ctx; | |
1030 | return nonseekable_open(inode, file); | |
1031 | } | |
1032 | ||
1033 | static struct file_operations spufs_psmap_fops = { | |
1034 | .open = spufs_psmap_open, | |
1035 | .mmap = spufs_psmap_mmap, | |
d9379c4b AB |
1036 | }; |
1037 | ||
1038 | ||
27d5bf2a | 1039 | #if SPUFS_MMAP_4K |
6df10a82 MN |
1040 | static struct page *spufs_mfc_mmap_nopage(struct vm_area_struct *vma, |
1041 | unsigned long address, int *type) | |
1042 | { | |
27d5bf2a | 1043 | return spufs_ps_nopage(vma, address, type, 0x3000, 0x1000); |
6df10a82 MN |
1044 | } |
1045 | ||
1046 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { | |
1047 | .nopage = spufs_mfc_mmap_nopage, | |
1048 | }; | |
1049 | ||
1050 | /* | |
1051 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1052 | */ |
1053 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1054 | { | |
1055 | if (!(vma->vm_flags & VM_SHARED)) | |
1056 | return -EINVAL; | |
1057 | ||
5c3ecd65 | 1058 | vma->vm_flags |= VM_IO; |
6df10a82 | 1059 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1060 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1061 | |
1062 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1063 | return 0; | |
1064 | } | |
27d5bf2a BH |
1065 | #else /* SPUFS_MMAP_4K */ |
1066 | #define spufs_mfc_mmap NULL | |
1067 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1068 | |
1069 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1070 | { | |
1071 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1072 | struct spu_context *ctx = i->i_ctx; | |
1073 | ||
1074 | /* we don't want to deal with DMA into other processes */ | |
1075 | if (ctx->owner != current->mm) | |
1076 | return -EINVAL; | |
1077 | ||
1078 | if (atomic_read(&inode->i_count) != 1) | |
1079 | return -EBUSY; | |
1080 | ||
1081 | file->private_data = ctx; | |
1082 | return nonseekable_open(inode, file); | |
1083 | } | |
1084 | ||
1085 | /* interrupt-level mfc callback function. */ | |
1086 | void spufs_mfc_callback(struct spu *spu) | |
1087 | { | |
1088 | struct spu_context *ctx = spu->ctx; | |
1089 | ||
1090 | wake_up_all(&ctx->mfc_wq); | |
1091 | ||
1092 | pr_debug("%s %s\n", __FUNCTION__, spu->name); | |
1093 | if (ctx->mfc_fasync) { | |
1094 | u32 free_elements, tagstatus; | |
1095 | unsigned int mask; | |
1096 | ||
1097 | /* no need for spu_acquire in interrupt context */ | |
1098 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1099 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1100 | ||
1101 | mask = 0; | |
1102 | if (free_elements & 0xffff) | |
1103 | mask |= POLLOUT; | |
1104 | if (tagstatus & ctx->tagwait) | |
1105 | mask |= POLLIN; | |
1106 | ||
1107 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1112 | { | |
1113 | /* See if there is one tag group is complete */ | |
1114 | /* FIXME we need locking around tagwait */ | |
1115 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1116 | ctx->tagwait &= ~*status; | |
1117 | if (*status) | |
1118 | return 1; | |
1119 | ||
1120 | /* enable interrupt waiting for any tag group, | |
1121 | may silently fail if interrupts are already enabled */ | |
1122 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1127 | size_t size, loff_t *pos) | |
1128 | { | |
1129 | struct spu_context *ctx = file->private_data; | |
1130 | int ret = -EINVAL; | |
1131 | u32 status; | |
1132 | ||
1133 | if (size != 4) | |
1134 | goto out; | |
1135 | ||
1136 | spu_acquire(ctx); | |
1137 | if (file->f_flags & O_NONBLOCK) { | |
1138 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1139 | if (!(status & ctx->tagwait)) | |
1140 | ret = -EAGAIN; | |
1141 | else | |
1142 | ctx->tagwait &= ~status; | |
1143 | } else { | |
1144 | ret = spufs_wait(ctx->mfc_wq, | |
1145 | spufs_read_mfc_tagstatus(ctx, &status)); | |
1146 | } | |
1147 | spu_release(ctx); | |
1148 | ||
1149 | if (ret) | |
1150 | goto out; | |
1151 | ||
1152 | ret = 4; | |
1153 | if (copy_to_user(buffer, &status, 4)) | |
1154 | ret = -EFAULT; | |
1155 | ||
1156 | out: | |
1157 | return ret; | |
1158 | } | |
1159 | ||
1160 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1161 | { | |
1162 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, | |
1163 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); | |
1164 | ||
1165 | switch (cmd->cmd) { | |
1166 | case MFC_PUT_CMD: | |
1167 | case MFC_PUTF_CMD: | |
1168 | case MFC_PUTB_CMD: | |
1169 | case MFC_GET_CMD: | |
1170 | case MFC_GETF_CMD: | |
1171 | case MFC_GETB_CMD: | |
1172 | break; | |
1173 | default: | |
1174 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1175 | return -EIO; | |
1176 | } | |
1177 | ||
1178 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
1179 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", | |
1180 | cmd->ea, cmd->lsa); | |
1181 | return -EIO; | |
1182 | } | |
1183 | ||
1184 | switch (cmd->size & 0xf) { | |
1185 | case 1: | |
1186 | break; | |
1187 | case 2: | |
1188 | if (cmd->lsa & 1) | |
1189 | goto error; | |
1190 | break; | |
1191 | case 4: | |
1192 | if (cmd->lsa & 3) | |
1193 | goto error; | |
1194 | break; | |
1195 | case 8: | |
1196 | if (cmd->lsa & 7) | |
1197 | goto error; | |
1198 | break; | |
1199 | case 0: | |
1200 | if (cmd->lsa & 15) | |
1201 | goto error; | |
1202 | break; | |
1203 | error: | |
1204 | default: | |
1205 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1206 | cmd->lsa & 0xf, cmd->size); | |
1207 | return -EIO; | |
1208 | } | |
1209 | ||
1210 | if (cmd->size > 16 * 1024) { | |
1211 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1212 | return -EIO; | |
1213 | } | |
1214 | ||
1215 | if (cmd->tag & 0xfff0) { | |
1216 | /* we reserve the higher tag numbers for kernel use */ | |
1217 | pr_debug("invalid DMA tag\n"); | |
1218 | return -EIO; | |
1219 | } | |
1220 | ||
1221 | if (cmd->class) { | |
1222 | /* not supported in this version */ | |
1223 | pr_debug("invalid DMA class\n"); | |
1224 | return -EIO; | |
1225 | } | |
1226 | ||
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1231 | struct mfc_dma_command cmd, | |
1232 | int *error) | |
1233 | { | |
1234 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1235 | if (*error == -EAGAIN) { | |
1236 | /* wait for any tag group to complete | |
1237 | so we have space for the new command */ | |
1238 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1239 | /* try again, because the queue might be | |
1240 | empty again */ | |
1241 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1242 | if (*error == -EAGAIN) | |
1243 | return 0; | |
1244 | } | |
1245 | return 1; | |
1246 | } | |
1247 | ||
1248 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1249 | size_t size, loff_t *pos) | |
1250 | { | |
1251 | struct spu_context *ctx = file->private_data; | |
1252 | struct mfc_dma_command cmd; | |
1253 | int ret = -EINVAL; | |
1254 | ||
1255 | if (size != sizeof cmd) | |
1256 | goto out; | |
1257 | ||
1258 | ret = -EFAULT; | |
1259 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1260 | goto out; | |
1261 | ||
1262 | ret = spufs_check_valid_dma(&cmd); | |
1263 | if (ret) | |
1264 | goto out; | |
1265 | ||
1266 | spu_acquire_runnable(ctx); | |
1267 | if (file->f_flags & O_NONBLOCK) { | |
1268 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1269 | } else { | |
1270 | int status; | |
1271 | ret = spufs_wait(ctx->mfc_wq, | |
1272 | spu_send_mfc_command(ctx, cmd, &status)); | |
1273 | if (status) | |
1274 | ret = status; | |
1275 | } | |
1276 | spu_release(ctx); | |
1277 | ||
1278 | if (ret) | |
1279 | goto out; | |
1280 | ||
1281 | ctx->tagwait |= 1 << cmd.tag; | |
1282 | ||
1283 | out: | |
1284 | return ret; | |
1285 | } | |
1286 | ||
1287 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1288 | { | |
1289 | struct spu_context *ctx = file->private_data; | |
1290 | u32 free_elements, tagstatus; | |
1291 | unsigned int mask; | |
1292 | ||
1293 | spu_acquire(ctx); | |
1294 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); | |
1295 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1296 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1297 | spu_release(ctx); | |
1298 | ||
1299 | poll_wait(file, &ctx->mfc_wq, wait); | |
1300 | ||
1301 | mask = 0; | |
1302 | if (free_elements & 0xffff) | |
1303 | mask |= POLLOUT | POLLWRNORM; | |
1304 | if (tagstatus & ctx->tagwait) | |
1305 | mask |= POLLIN | POLLRDNORM; | |
1306 | ||
1307 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, | |
1308 | free_elements, tagstatus, ctx->tagwait); | |
1309 | ||
1310 | return mask; | |
1311 | } | |
1312 | ||
73b6af8a | 1313 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1314 | { |
1315 | struct spu_context *ctx = file->private_data; | |
1316 | int ret; | |
1317 | ||
1318 | spu_acquire(ctx); | |
1319 | #if 0 | |
1320 | /* this currently hangs */ | |
1321 | ret = spufs_wait(ctx->mfc_wq, | |
1322 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1323 | if (ret) | |
1324 | goto out; | |
1325 | ret = spufs_wait(ctx->mfc_wq, | |
1326 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
1327 | out: | |
1328 | #else | |
1329 | ret = 0; | |
1330 | #endif | |
1331 | spu_release(ctx); | |
1332 | ||
1333 | return ret; | |
1334 | } | |
1335 | ||
1336 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1337 | int datasync) | |
1338 | { | |
73b6af8a | 1339 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1340 | } |
1341 | ||
1342 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1343 | { | |
1344 | struct spu_context *ctx = file->private_data; | |
1345 | ||
1346 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1347 | } | |
1348 | ||
1349 | static struct file_operations spufs_mfc_fops = { | |
1350 | .open = spufs_mfc_open, | |
1351 | .read = spufs_mfc_read, | |
1352 | .write = spufs_mfc_write, | |
1353 | .poll = spufs_mfc_poll, | |
1354 | .flush = spufs_mfc_flush, | |
1355 | .fsync = spufs_mfc_fsync, | |
1356 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1357 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1358 | }; |
1359 | ||
099814bb JK |
1360 | |
1361 | static int spufs_recycle_open(struct inode *inode, struct file *file) | |
1362 | { | |
1363 | file->private_data = SPUFS_I(inode)->i_ctx; | |
1364 | return nonseekable_open(inode, file); | |
1365 | } | |
1366 | ||
1367 | static ssize_t spufs_recycle_write(struct file *file, | |
1368 | const char __user *buffer, size_t size, loff_t *pos) | |
1369 | { | |
1370 | struct spu_context *ctx = file->private_data; | |
1371 | int ret; | |
1372 | ||
1373 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
1374 | return -EINVAL; | |
1375 | ||
1376 | if (size < 1) | |
1377 | return -EINVAL; | |
1378 | ||
1379 | ret = spu_recycle_isolated(ctx); | |
1380 | ||
1381 | if (ret) | |
1382 | return ret; | |
1383 | return size; | |
1384 | } | |
1385 | ||
1386 | static struct file_operations spufs_recycle_fops = { | |
1387 | .open = spufs_recycle_open, | |
1388 | .write = spufs_recycle_write, | |
1389 | }; | |
1390 | ||
67207b96 AB |
1391 | static void spufs_npc_set(void *data, u64 val) |
1392 | { | |
1393 | struct spu_context *ctx = data; | |
8b3d6663 AB |
1394 | spu_acquire(ctx); |
1395 | ctx->ops->npc_write(ctx, val); | |
1396 | spu_release(ctx); | |
67207b96 AB |
1397 | } |
1398 | ||
1399 | static u64 spufs_npc_get(void *data) | |
1400 | { | |
1401 | struct spu_context *ctx = data; | |
1402 | u64 ret; | |
8b3d6663 AB |
1403 | spu_acquire(ctx); |
1404 | ret = ctx->ops->npc_read(ctx); | |
1405 | spu_release(ctx); | |
67207b96 AB |
1406 | return ret; |
1407 | } | |
9b5047e2 DGM |
1408 | DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1409 | "0x%llx\n") | |
67207b96 | 1410 | |
8b3d6663 AB |
1411 | static void spufs_decr_set(void *data, u64 val) |
1412 | { | |
1413 | struct spu_context *ctx = data; | |
1414 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1415 | spu_acquire_saved(ctx); | |
1416 | lscsa->decr.slot[0] = (u32) val; | |
1417 | spu_release(ctx); | |
1418 | } | |
1419 | ||
1420 | static u64 spufs_decr_get(void *data) | |
1421 | { | |
1422 | struct spu_context *ctx = data; | |
1423 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1424 | u64 ret; | |
1425 | spu_acquire_saved(ctx); | |
1426 | ret = lscsa->decr.slot[0]; | |
1427 | spu_release(ctx); | |
1428 | return ret; | |
1429 | } | |
1430 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, | |
9b5047e2 | 1431 | "0x%llx\n") |
8b3d6663 AB |
1432 | |
1433 | static void spufs_decr_status_set(void *data, u64 val) | |
1434 | { | |
1435 | struct spu_context *ctx = data; | |
1436 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1437 | spu_acquire_saved(ctx); | |
1438 | lscsa->decr_status.slot[0] = (u32) val; | |
1439 | spu_release(ctx); | |
1440 | } | |
1441 | ||
1442 | static u64 spufs_decr_status_get(void *data) | |
1443 | { | |
1444 | struct spu_context *ctx = data; | |
1445 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1446 | u64 ret; | |
1447 | spu_acquire_saved(ctx); | |
1448 | ret = lscsa->decr_status.slot[0]; | |
1449 | spu_release(ctx); | |
1450 | return ret; | |
1451 | } | |
1452 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, | |
9b5047e2 | 1453 | spufs_decr_status_set, "0x%llx\n") |
8b3d6663 | 1454 | |
8b3d6663 AB |
1455 | static void spufs_event_mask_set(void *data, u64 val) |
1456 | { | |
1457 | struct spu_context *ctx = data; | |
1458 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1459 | spu_acquire_saved(ctx); | |
1460 | lscsa->event_mask.slot[0] = (u32) val; | |
1461 | spu_release(ctx); | |
1462 | } | |
1463 | ||
1464 | static u64 spufs_event_mask_get(void *data) | |
1465 | { | |
1466 | struct spu_context *ctx = data; | |
1467 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1468 | u64 ret; | |
1469 | spu_acquire_saved(ctx); | |
1470 | ret = lscsa->event_mask.slot[0]; | |
1471 | spu_release(ctx); | |
1472 | return ret; | |
1473 | } | |
1474 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, | |
9b5047e2 | 1475 | spufs_event_mask_set, "0x%llx\n") |
8b3d6663 | 1476 | |
b9e3bd77 DGM |
1477 | static u64 spufs_event_status_get(void *data) |
1478 | { | |
1479 | struct spu_context *ctx = data; | |
1480 | struct spu_state *state = &ctx->csa; | |
1481 | u64 ret = 0; | |
1482 | u64 stat; | |
1483 | ||
1484 | spu_acquire_saved(ctx); | |
1485 | stat = state->spu_chnlcnt_RW[0]; | |
1486 | if (stat) | |
1487 | ret = state->spu_chnldata_RW[0]; | |
1488 | spu_release(ctx); | |
1489 | return ret; | |
1490 | } | |
1491 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, | |
1492 | NULL, "0x%llx\n") | |
1493 | ||
8b3d6663 AB |
1494 | static void spufs_srr0_set(void *data, u64 val) |
1495 | { | |
1496 | struct spu_context *ctx = data; | |
1497 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1498 | spu_acquire_saved(ctx); | |
1499 | lscsa->srr0.slot[0] = (u32) val; | |
1500 | spu_release(ctx); | |
1501 | } | |
1502 | ||
1503 | static u64 spufs_srr0_get(void *data) | |
1504 | { | |
1505 | struct spu_context *ctx = data; | |
1506 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1507 | u64 ret; | |
1508 | spu_acquire_saved(ctx); | |
1509 | ret = lscsa->srr0.slot[0]; | |
1510 | spu_release(ctx); | |
1511 | return ret; | |
1512 | } | |
1513 | DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, | |
9b5047e2 | 1514 | "0x%llx\n") |
8b3d6663 | 1515 | |
7b1a7014 AB |
1516 | static u64 spufs_id_get(void *data) |
1517 | { | |
1518 | struct spu_context *ctx = data; | |
1519 | u64 num; | |
1520 | ||
1521 | spu_acquire(ctx); | |
1522 | if (ctx->state == SPU_STATE_RUNNABLE) | |
1523 | num = ctx->spu->number; | |
1524 | else | |
1525 | num = (unsigned int)-1; | |
1526 | spu_release(ctx); | |
1527 | ||
1528 | return num; | |
1529 | } | |
e45d6634 | 1530 | DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n") |
7b1a7014 | 1531 | |
86767277 AB |
1532 | static u64 spufs_object_id_get(void *data) |
1533 | { | |
1534 | struct spu_context *ctx = data; | |
1535 | return ctx->object_id; | |
1536 | } | |
1537 | ||
1538 | static void spufs_object_id_set(void *data, u64 id) | |
1539 | { | |
1540 | struct spu_context *ctx = data; | |
1541 | ctx->object_id = id; | |
1542 | } | |
1543 | ||
1544 | DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, | |
1545 | spufs_object_id_set, "0x%llx\n"); | |
1546 | ||
b9e3bd77 DGM |
1547 | static u64 spufs_lslr_get(void *data) |
1548 | { | |
1549 | struct spu_context *ctx = data; | |
1550 | u64 ret; | |
1551 | ||
1552 | spu_acquire_saved(ctx); | |
1553 | ret = ctx->csa.priv2.spu_lslr_RW; | |
1554 | spu_release(ctx); | |
1555 | ||
1556 | return ret; | |
1557 | } | |
1558 | DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n") | |
1559 | ||
1560 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1561 | { | |
1562 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1563 | struct spu_context *ctx = i->i_ctx; | |
1564 | file->private_data = ctx; | |
1565 | return 0; | |
1566 | } | |
1567 | ||
69a2f00c DGM |
1568 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1569 | size_t len, loff_t *pos) | |
1570 | { | |
1571 | struct spu_context *ctx = file->private_data; | |
1572 | u32 mbox_stat; | |
1573 | u32 data; | |
1574 | ||
1575 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1576 | return -EFAULT; | |
1577 | ||
1578 | spu_acquire_saved(ctx); | |
1579 | spin_lock(&ctx->csa.register_lock); | |
1580 | mbox_stat = ctx->csa.prob.mb_stat_R; | |
1581 | if (mbox_stat & 0x0000ff) { | |
1582 | data = ctx->csa.prob.pu_mb_R; | |
1583 | } | |
1584 | spin_unlock(&ctx->csa.register_lock); | |
1585 | spu_release(ctx); | |
1586 | ||
1587 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1588 | } | |
1589 | ||
1590 | static struct file_operations spufs_mbox_info_fops = { | |
1591 | .open = spufs_info_open, | |
1592 | .read = spufs_mbox_info_read, | |
1593 | .llseek = generic_file_llseek, | |
1594 | }; | |
1595 | ||
1596 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, | |
1597 | size_t len, loff_t *pos) | |
1598 | { | |
1599 | struct spu_context *ctx = file->private_data; | |
1600 | u32 ibox_stat; | |
1601 | u32 data; | |
1602 | ||
1603 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1604 | return -EFAULT; | |
1605 | ||
1606 | spu_acquire_saved(ctx); | |
1607 | spin_lock(&ctx->csa.register_lock); | |
1608 | ibox_stat = ctx->csa.prob.mb_stat_R; | |
1609 | if (ibox_stat & 0xff0000) { | |
1610 | data = ctx->csa.priv2.puint_mb_R; | |
1611 | } | |
1612 | spin_unlock(&ctx->csa.register_lock); | |
1613 | spu_release(ctx); | |
1614 | ||
1615 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1616 | } | |
1617 | ||
1618 | static struct file_operations spufs_ibox_info_fops = { | |
1619 | .open = spufs_info_open, | |
1620 | .read = spufs_ibox_info_read, | |
1621 | .llseek = generic_file_llseek, | |
1622 | }; | |
1623 | ||
1624 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
1625 | size_t len, loff_t *pos) | |
1626 | { | |
1627 | struct spu_context *ctx = file->private_data; | |
1628 | int i, cnt; | |
1629 | u32 data[4]; | |
1630 | u32 wbox_stat; | |
1631 | ||
1632 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1633 | return -EFAULT; | |
1634 | ||
1635 | spu_acquire_saved(ctx); | |
1636 | spin_lock(&ctx->csa.register_lock); | |
1637 | wbox_stat = ctx->csa.prob.mb_stat_R; | |
1638 | cnt = (wbox_stat & 0x00ff00) >> 8; | |
1639 | for (i = 0; i < cnt; i++) { | |
1640 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
1641 | } | |
1642 | spin_unlock(&ctx->csa.register_lock); | |
1643 | spu_release(ctx); | |
1644 | ||
1645 | return simple_read_from_buffer(buf, len, pos, &data, | |
1646 | cnt * sizeof(u32)); | |
1647 | } | |
1648 | ||
1649 | static struct file_operations spufs_wbox_info_fops = { | |
1650 | .open = spufs_info_open, | |
1651 | .read = spufs_wbox_info_read, | |
1652 | .llseek = generic_file_llseek, | |
1653 | }; | |
1654 | ||
b9e3bd77 DGM |
1655 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
1656 | size_t len, loff_t *pos) | |
1657 | { | |
1658 | struct spu_context *ctx = file->private_data; | |
1659 | struct spu_dma_info info; | |
1660 | struct mfc_cq_sr *qp, *spuqp; | |
1661 | int i; | |
1662 | ||
1663 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1664 | return -EFAULT; | |
1665 | ||
1666 | spu_acquire_saved(ctx); | |
1667 | spin_lock(&ctx->csa.register_lock); | |
1668 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; | |
1669 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
1670 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
1671 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
1672 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
1673 | for (i = 0; i < 16; i++) { | |
1674 | qp = &info.dma_info_command_data[i]; | |
1675 | spuqp = &ctx->csa.priv2.spuq[i]; | |
1676 | ||
1677 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
1678 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
1679 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
1680 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
1681 | } | |
1682 | spin_unlock(&ctx->csa.register_lock); | |
1683 | spu_release(ctx); | |
1684 | ||
1685 | return simple_read_from_buffer(buf, len, pos, &info, | |
1686 | sizeof info); | |
1687 | } | |
1688 | ||
1689 | static struct file_operations spufs_dma_info_fops = { | |
1690 | .open = spufs_info_open, | |
1691 | .read = spufs_dma_info_read, | |
1692 | }; | |
1693 | ||
1694 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
1695 | size_t len, loff_t *pos) | |
1696 | { | |
1697 | struct spu_context *ctx = file->private_data; | |
1698 | struct spu_proxydma_info info; | |
1699 | int ret = sizeof info; | |
1700 | struct mfc_cq_sr *qp, *puqp; | |
1701 | int i; | |
1702 | ||
1703 | if (len < ret) | |
1704 | return -EINVAL; | |
1705 | ||
1706 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1707 | return -EFAULT; | |
1708 | ||
1709 | spu_acquire_saved(ctx); | |
1710 | spin_lock(&ctx->csa.register_lock); | |
1711 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; | |
1712 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
1713 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
1714 | for (i = 0; i < 8; i++) { | |
1715 | qp = &info.proxydma_info_command_data[i]; | |
1716 | puqp = &ctx->csa.priv2.puq[i]; | |
1717 | ||
1718 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
1719 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
1720 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
1721 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
1722 | } | |
1723 | spin_unlock(&ctx->csa.register_lock); | |
1724 | spu_release(ctx); | |
1725 | ||
1726 | if (copy_to_user(buf, &info, sizeof info)) | |
1727 | ret = -EFAULT; | |
1728 | ||
1729 | return ret; | |
1730 | } | |
1731 | ||
1732 | static struct file_operations spufs_proxydma_info_fops = { | |
1733 | .open = spufs_info_open, | |
1734 | .read = spufs_proxydma_info_read, | |
1735 | }; | |
1736 | ||
67207b96 AB |
1737 | struct tree_descr spufs_dir_contents[] = { |
1738 | { "mem", &spufs_mem_fops, 0666, }, | |
8b3d6663 | 1739 | { "regs", &spufs_regs_fops, 0666, }, |
67207b96 AB |
1740 | { "mbox", &spufs_mbox_fops, 0444, }, |
1741 | { "ibox", &spufs_ibox_fops, 0444, }, | |
1742 | { "wbox", &spufs_wbox_fops, 0222, }, | |
1743 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
1744 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
1745 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
1746 | { "signal1", &spufs_signal1_fops, 0666, }, | |
1747 | { "signal2", &spufs_signal2_fops, 0666, }, | |
1748 | { "signal1_type", &spufs_signal1_type, 0666, }, | |
1749 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 1750 | { "cntl", &spufs_cntl_fops, 0666, }, |
8b3d6663 | 1751 | { "fpcr", &spufs_fpcr_fops, 0666, }, |
b9e3bd77 DGM |
1752 | { "lslr", &spufs_lslr_ops, 0444, }, |
1753 | { "mfc", &spufs_mfc_fops, 0666, }, | |
1754 | { "mss", &spufs_mss_fops, 0666, }, | |
1755 | { "npc", &spufs_npc_ops, 0666, }, | |
1756 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
1757 | { "decr", &spufs_decr_ops, 0666, }, |
1758 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 1759 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 1760 | { "event_status", &spufs_event_status_ops, 0444, }, |
27d5bf2a | 1761 | { "psmap", &spufs_psmap_fops, 0666, }, |
86767277 AB |
1762 | { "phys-id", &spufs_id_ops, 0666, }, |
1763 | { "object-id", &spufs_object_id_ops, 0666, }, | |
69a2f00c DGM |
1764 | { "mbox_info", &spufs_mbox_info_fops, 0444, }, |
1765 | { "ibox_info", &spufs_ibox_info_fops, 0444, }, | |
1766 | { "wbox_info", &spufs_wbox_info_fops, 0444, }, | |
b9e3bd77 DGM |
1767 | { "dma_info", &spufs_dma_info_fops, 0444, }, |
1768 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, | |
67207b96 AB |
1769 | {}, |
1770 | }; | |
5737edd1 MN |
1771 | |
1772 | struct tree_descr spufs_dir_nosched_contents[] = { | |
1773 | { "mem", &spufs_mem_fops, 0666, }, | |
1774 | { "mbox", &spufs_mbox_fops, 0444, }, | |
1775 | { "ibox", &spufs_ibox_fops, 0444, }, | |
1776 | { "wbox", &spufs_wbox_fops, 0222, }, | |
1777 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
1778 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
1779 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
1780 | { "signal1", &spufs_signal1_fops, 0666, }, | |
1781 | { "signal2", &spufs_signal2_fops, 0666, }, | |
1782 | { "signal1_type", &spufs_signal1_type, 0666, }, | |
1783 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
1784 | { "mss", &spufs_mss_fops, 0666, }, | |
1785 | { "mfc", &spufs_mfc_fops, 0666, }, | |
1786 | { "cntl", &spufs_cntl_fops, 0666, }, | |
1787 | { "npc", &spufs_npc_ops, 0666, }, | |
1788 | { "psmap", &spufs_psmap_fops, 0666, }, | |
1789 | { "phys-id", &spufs_id_ops, 0666, }, | |
1790 | { "object-id", &spufs_object_id_ops, 0666, }, | |
099814bb | 1791 | { "recycle", &spufs_recycle_fops, 0222, }, |
5737edd1 MN |
1792 | {}, |
1793 | }; |