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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 | ||
67207b96 AB |
42 | static int |
43 | spufs_mem_open(struct inode *inode, struct file *file) | |
44 | { | |
45 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 MN |
46 | struct spu_context *ctx = i->i_ctx; |
47 | file->private_data = ctx; | |
48 | file->f_mapping = inode->i_mapping; | |
49 | ctx->local_store = inode->i_mapping; | |
67207b96 AB |
50 | return 0; |
51 | } | |
52 | ||
bf1ab978 DGM |
53 | static ssize_t |
54 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
55 | size_t size, loff_t *pos) | |
56 | { | |
57 | char *local_store = ctx->ops->get_ls(ctx); | |
58 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
59 | LS_SIZE); | |
60 | } | |
61 | ||
67207b96 AB |
62 | static ssize_t |
63 | spufs_mem_read(struct file *file, char __user *buffer, | |
64 | size_t size, loff_t *pos) | |
65 | { | |
67207b96 | 66 | int ret; |
bf1ab978 | 67 | struct spu_context *ctx = file->private_data; |
67207b96 | 68 | |
8b3d6663 | 69 | spu_acquire(ctx); |
bf1ab978 | 70 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 71 | spu_release(ctx); |
67207b96 AB |
72 | return ret; |
73 | } | |
74 | ||
75 | static ssize_t | |
76 | spufs_mem_write(struct file *file, const char __user *buffer, | |
77 | size_t size, loff_t *pos) | |
78 | { | |
79 | struct spu_context *ctx = file->private_data; | |
8b3d6663 AB |
80 | char *local_store; |
81 | int ret; | |
67207b96 AB |
82 | |
83 | size = min_t(ssize_t, LS_SIZE - *pos, size); | |
84 | if (size <= 0) | |
85 | return -EFBIG; | |
86 | *pos += size; | |
8b3d6663 AB |
87 | |
88 | spu_acquire(ctx); | |
89 | ||
90 | local_store = ctx->ops->get_ls(ctx); | |
91 | ret = copy_from_user(local_store + *pos - size, | |
92 | buffer, size) ? -EFAULT : size; | |
93 | ||
94 | spu_release(ctx); | |
95 | return ret; | |
67207b96 AB |
96 | } |
97 | ||
8b3d6663 AB |
98 | static struct page * |
99 | spufs_mem_mmap_nopage(struct vm_area_struct *vma, | |
100 | unsigned long address, int *type) | |
101 | { | |
102 | struct page *page = NOPAGE_SIGBUS; | |
103 | ||
104 | struct spu_context *ctx = vma->vm_file->private_data; | |
105 | unsigned long offset = address - vma->vm_start; | |
106 | offset += vma->vm_pgoff << PAGE_SHIFT; | |
107 | ||
108 | spu_acquire(ctx); | |
109 | ||
ac91cb8d AB |
110 | if (ctx->state == SPU_STATE_SAVED) { |
111 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
932f535d | 112 | & ~_PAGE_NO_CACHE); |
8b3d6663 | 113 | page = vmalloc_to_page(ctx->csa.lscsa->ls + offset); |
ac91cb8d AB |
114 | } else { |
115 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
932f535d | 116 | | _PAGE_NO_CACHE); |
8b3d6663 AB |
117 | page = pfn_to_page((ctx->spu->local_store_phys + offset) |
118 | >> PAGE_SHIFT); | |
ac91cb8d | 119 | } |
8b3d6663 AB |
120 | spu_release(ctx); |
121 | ||
122 | if (type) | |
123 | *type = VM_FAULT_MINOR; | |
124 | ||
d88cfffa | 125 | page_cache_get(page); |
8b3d6663 AB |
126 | return page; |
127 | } | |
128 | ||
129 | static struct vm_operations_struct spufs_mem_mmap_vmops = { | |
130 | .nopage = spufs_mem_mmap_nopage, | |
131 | }; | |
132 | ||
67207b96 AB |
133 | static int |
134 | spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) | |
135 | { | |
8b3d6663 AB |
136 | if (!(vma->vm_flags & VM_SHARED)) |
137 | return -EINVAL; | |
67207b96 | 138 | |
5c3ecd65 | 139 | vma->vm_flags |= VM_IO; |
8b3d6663 AB |
140 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
141 | | _PAGE_NO_CACHE); | |
142 | ||
143 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
144 | return 0; |
145 | } | |
146 | ||
5dfe4c96 | 147 | static const struct file_operations spufs_mem_fops = { |
67207b96 AB |
148 | .open = spufs_mem_open, |
149 | .read = spufs_mem_read, | |
150 | .write = spufs_mem_write, | |
8b3d6663 | 151 | .llseek = generic_file_llseek, |
67207b96 | 152 | .mmap = spufs_mem_mmap, |
8b3d6663 AB |
153 | }; |
154 | ||
6df10a82 MN |
155 | static struct page *spufs_ps_nopage(struct vm_area_struct *vma, |
156 | unsigned long address, | |
27d5bf2a BH |
157 | int *type, unsigned long ps_offs, |
158 | unsigned long ps_size) | |
6df10a82 MN |
159 | { |
160 | struct page *page = NOPAGE_SIGBUS; | |
161 | int fault_type = VM_FAULT_SIGBUS; | |
162 | struct spu_context *ctx = vma->vm_file->private_data; | |
163 | unsigned long offset = address - vma->vm_start; | |
164 | unsigned long area; | |
165 | int ret; | |
166 | ||
167 | offset += vma->vm_pgoff << PAGE_SHIFT; | |
27d5bf2a | 168 | if (offset >= ps_size) |
6df10a82 MN |
169 | goto out; |
170 | ||
171 | ret = spu_acquire_runnable(ctx); | |
172 | if (ret) | |
173 | goto out; | |
174 | ||
175 | area = ctx->spu->problem_phys + ps_offs; | |
176 | page = pfn_to_page((area + offset) >> PAGE_SHIFT); | |
177 | fault_type = VM_FAULT_MINOR; | |
178 | page_cache_get(page); | |
179 | ||
180 | spu_release(ctx); | |
181 | ||
182 | out: | |
183 | if (type) | |
184 | *type = fault_type; | |
185 | ||
186 | return page; | |
187 | } | |
188 | ||
27d5bf2a | 189 | #if SPUFS_MMAP_4K |
6df10a82 MN |
190 | static struct page *spufs_cntl_mmap_nopage(struct vm_area_struct *vma, |
191 | unsigned long address, int *type) | |
192 | { | |
27d5bf2a | 193 | return spufs_ps_nopage(vma, address, type, 0x4000, 0x1000); |
6df10a82 MN |
194 | } |
195 | ||
196 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { | |
197 | .nopage = spufs_cntl_mmap_nopage, | |
198 | }; | |
199 | ||
200 | /* | |
201 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
202 | */ |
203 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
204 | { | |
205 | if (!(vma->vm_flags & VM_SHARED)) | |
206 | return -EINVAL; | |
207 | ||
5c3ecd65 | 208 | vma->vm_flags |= VM_IO; |
6df10a82 | 209 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 210 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
211 | |
212 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
213 | return 0; | |
214 | } | |
27d5bf2a BH |
215 | #else /* SPUFS_MMAP_4K */ |
216 | #define spufs_cntl_mmap NULL | |
217 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 218 | |
e1dbff2b | 219 | static u64 spufs_cntl_get(void *data) |
6df10a82 | 220 | { |
e1dbff2b AB |
221 | struct spu_context *ctx = data; |
222 | u64 val; | |
6df10a82 | 223 | |
e1dbff2b AB |
224 | spu_acquire(ctx); |
225 | val = ctx->ops->status_read(ctx); | |
226 | spu_release(ctx); | |
227 | ||
228 | return val; | |
6df10a82 MN |
229 | } |
230 | ||
e1dbff2b | 231 | static void spufs_cntl_set(void *data, u64 val) |
6df10a82 | 232 | { |
e1dbff2b AB |
233 | struct spu_context *ctx = data; |
234 | ||
235 | spu_acquire(ctx); | |
236 | ctx->ops->runcntl_write(ctx, val); | |
237 | spu_release(ctx); | |
6df10a82 MN |
238 | } |
239 | ||
e1dbff2b | 240 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 241 | { |
e1dbff2b AB |
242 | struct spufs_inode_info *i = SPUFS_I(inode); |
243 | struct spu_context *ctx = i->i_ctx; | |
244 | ||
245 | file->private_data = ctx; | |
246 | file->f_mapping = inode->i_mapping; | |
247 | ctx->cntl = inode->i_mapping; | |
248 | return simple_attr_open(inode, file, spufs_cntl_get, | |
249 | spufs_cntl_set, "0x%08lx"); | |
6df10a82 MN |
250 | } |
251 | ||
5dfe4c96 | 252 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 253 | .open = spufs_cntl_open, |
654e4aee | 254 | .release = simple_attr_close, |
e1dbff2b AB |
255 | .read = simple_attr_read, |
256 | .write = simple_attr_write, | |
6df10a82 | 257 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
258 | }; |
259 | ||
8b3d6663 AB |
260 | static int |
261 | spufs_regs_open(struct inode *inode, struct file *file) | |
262 | { | |
263 | struct spufs_inode_info *i = SPUFS_I(inode); | |
264 | file->private_data = i->i_ctx; | |
265 | return 0; | |
266 | } | |
267 | ||
bf1ab978 DGM |
268 | static ssize_t |
269 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
270 | size_t size, loff_t *pos) | |
271 | { | |
272 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
273 | return simple_read_from_buffer(buffer, size, pos, | |
274 | lscsa->gprs, sizeof lscsa->gprs); | |
275 | } | |
276 | ||
8b3d6663 AB |
277 | static ssize_t |
278 | spufs_regs_read(struct file *file, char __user *buffer, | |
279 | size_t size, loff_t *pos) | |
280 | { | |
8b3d6663 | 281 | int ret; |
bf1ab978 | 282 | struct spu_context *ctx = file->private_data; |
8b3d6663 AB |
283 | |
284 | spu_acquire_saved(ctx); | |
bf1ab978 | 285 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
8b3d6663 AB |
286 | spu_release(ctx); |
287 | return ret; | |
288 | } | |
289 | ||
290 | static ssize_t | |
291 | spufs_regs_write(struct file *file, const char __user *buffer, | |
292 | size_t size, loff_t *pos) | |
293 | { | |
294 | struct spu_context *ctx = file->private_data; | |
295 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
296 | int ret; | |
297 | ||
298 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); | |
299 | if (size <= 0) | |
300 | return -EFBIG; | |
301 | *pos += size; | |
302 | ||
303 | spu_acquire_saved(ctx); | |
304 | ||
305 | ret = copy_from_user(lscsa->gprs + *pos - size, | |
306 | buffer, size) ? -EFAULT : size; | |
307 | ||
308 | spu_release(ctx); | |
309 | return ret; | |
310 | } | |
311 | ||
5dfe4c96 | 312 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
313 | .open = spufs_regs_open, |
314 | .read = spufs_regs_read, | |
315 | .write = spufs_regs_write, | |
67207b96 AB |
316 | .llseek = generic_file_llseek, |
317 | }; | |
318 | ||
bf1ab978 DGM |
319 | static ssize_t |
320 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
321 | size_t size, loff_t * pos) | |
322 | { | |
323 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
324 | return simple_read_from_buffer(buffer, size, pos, | |
325 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
326 | } | |
327 | ||
8b3d6663 AB |
328 | static ssize_t |
329 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
330 | size_t size, loff_t * pos) | |
331 | { | |
8b3d6663 | 332 | int ret; |
bf1ab978 | 333 | struct spu_context *ctx = file->private_data; |
8b3d6663 AB |
334 | |
335 | spu_acquire_saved(ctx); | |
bf1ab978 | 336 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
8b3d6663 AB |
337 | spu_release(ctx); |
338 | return ret; | |
339 | } | |
340 | ||
341 | static ssize_t | |
342 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
343 | size_t size, loff_t * pos) | |
344 | { | |
345 | struct spu_context *ctx = file->private_data; | |
346 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
347 | int ret; | |
348 | ||
349 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); | |
350 | if (size <= 0) | |
351 | return -EFBIG; | |
352 | *pos += size; | |
353 | ||
354 | spu_acquire_saved(ctx); | |
355 | ||
356 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, | |
357 | buffer, size) ? -EFAULT : size; | |
358 | ||
359 | spu_release(ctx); | |
360 | return ret; | |
361 | } | |
362 | ||
5dfe4c96 | 363 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
364 | .open = spufs_regs_open, |
365 | .read = spufs_fpcr_read, | |
366 | .write = spufs_fpcr_write, | |
367 | .llseek = generic_file_llseek, | |
368 | }; | |
369 | ||
67207b96 AB |
370 | /* generic open function for all pipe-like files */ |
371 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
372 | { | |
373 | struct spufs_inode_info *i = SPUFS_I(inode); | |
374 | file->private_data = i->i_ctx; | |
375 | ||
376 | return nonseekable_open(inode, file); | |
377 | } | |
378 | ||
cdcc89bb AB |
379 | /* |
380 | * Read as many bytes from the mailbox as possible, until | |
381 | * one of the conditions becomes true: | |
382 | * | |
383 | * - no more data available in the mailbox | |
384 | * - end of the user provided buffer | |
385 | * - end of the mapped area | |
386 | */ | |
67207b96 AB |
387 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
388 | size_t len, loff_t *pos) | |
389 | { | |
8b3d6663 | 390 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
391 | u32 mbox_data, __user *udata; |
392 | ssize_t count; | |
67207b96 AB |
393 | |
394 | if (len < 4) | |
395 | return -EINVAL; | |
396 | ||
cdcc89bb AB |
397 | if (!access_ok(VERIFY_WRITE, buf, len)) |
398 | return -EFAULT; | |
399 | ||
400 | udata = (void __user *)buf; | |
401 | ||
8b3d6663 | 402 | spu_acquire(ctx); |
274cef5e | 403 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
404 | int ret; |
405 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
406 | if (ret == 0) | |
407 | break; | |
408 | ||
409 | /* | |
410 | * at the end of the mapped area, we can fault | |
411 | * but still need to return the data we have | |
412 | * read successfully so far. | |
413 | */ | |
414 | ret = __put_user(mbox_data, udata); | |
415 | if (ret) { | |
416 | if (!count) | |
417 | count = -EFAULT; | |
418 | break; | |
419 | } | |
420 | } | |
8b3d6663 | 421 | spu_release(ctx); |
67207b96 | 422 | |
cdcc89bb AB |
423 | if (!count) |
424 | count = -EAGAIN; | |
67207b96 | 425 | |
cdcc89bb | 426 | return count; |
67207b96 AB |
427 | } |
428 | ||
5dfe4c96 | 429 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
430 | .open = spufs_pipe_open, |
431 | .read = spufs_mbox_read, | |
432 | }; | |
433 | ||
434 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
435 | size_t len, loff_t *pos) | |
436 | { | |
8b3d6663 | 437 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
438 | u32 mbox_stat; |
439 | ||
440 | if (len < 4) | |
441 | return -EINVAL; | |
442 | ||
8b3d6663 AB |
443 | spu_acquire(ctx); |
444 | ||
445 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
446 | ||
447 | spu_release(ctx); | |
67207b96 AB |
448 | |
449 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
450 | return -EFAULT; | |
451 | ||
452 | return 4; | |
453 | } | |
454 | ||
5dfe4c96 | 455 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
456 | .open = spufs_pipe_open, |
457 | .read = spufs_mbox_stat_read, | |
458 | }; | |
459 | ||
460 | /* low-level ibox access function */ | |
8b3d6663 | 461 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 462 | { |
8b3d6663 AB |
463 | return ctx->ops->ibox_read(ctx, data); |
464 | } | |
67207b96 | 465 | |
8b3d6663 AB |
466 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
467 | { | |
468 | struct spu_context *ctx = file->private_data; | |
67207b96 | 469 | |
8b3d6663 | 470 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 471 | } |
67207b96 | 472 | |
8b3d6663 AB |
473 | /* interrupt-level ibox callback function. */ |
474 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 475 | { |
8b3d6663 AB |
476 | struct spu_context *ctx = spu->ctx; |
477 | ||
478 | wake_up_all(&ctx->ibox_wq); | |
479 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
480 | } |
481 | ||
cdcc89bb AB |
482 | /* |
483 | * Read as many bytes from the interrupt mailbox as possible, until | |
484 | * one of the conditions becomes true: | |
485 | * | |
486 | * - no more data available in the mailbox | |
487 | * - end of the user provided buffer | |
488 | * - end of the mapped area | |
489 | * | |
490 | * If the file is opened without O_NONBLOCK, we wait here until | |
491 | * any data is available, but return when we have been able to | |
492 | * read something. | |
493 | */ | |
67207b96 AB |
494 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
495 | size_t len, loff_t *pos) | |
496 | { | |
8b3d6663 | 497 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
498 | u32 ibox_data, __user *udata; |
499 | ssize_t count; | |
67207b96 AB |
500 | |
501 | if (len < 4) | |
502 | return -EINVAL; | |
503 | ||
cdcc89bb AB |
504 | if (!access_ok(VERIFY_WRITE, buf, len)) |
505 | return -EFAULT; | |
506 | ||
507 | udata = (void __user *)buf; | |
508 | ||
8b3d6663 | 509 | spu_acquire(ctx); |
67207b96 | 510 | |
cdcc89bb AB |
511 | /* wait only for the first element */ |
512 | count = 0; | |
67207b96 | 513 | if (file->f_flags & O_NONBLOCK) { |
8b3d6663 | 514 | if (!spu_ibox_read(ctx, &ibox_data)) |
cdcc89bb | 515 | count = -EAGAIN; |
67207b96 | 516 | } else { |
cdcc89bb | 517 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
67207b96 | 518 | } |
cdcc89bb AB |
519 | if (count) |
520 | goto out; | |
67207b96 | 521 | |
cdcc89bb AB |
522 | /* if we can't write at all, return -EFAULT */ |
523 | count = __put_user(ibox_data, udata); | |
524 | if (count) | |
525 | goto out; | |
8b3d6663 | 526 | |
cdcc89bb AB |
527 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
528 | int ret; | |
529 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
530 | if (ret == 0) | |
531 | break; | |
532 | /* | |
533 | * at the end of the mapped area, we can fault | |
534 | * but still need to return the data we have | |
535 | * read successfully so far. | |
536 | */ | |
537 | ret = __put_user(ibox_data, udata); | |
538 | if (ret) | |
539 | break; | |
540 | } | |
67207b96 | 541 | |
cdcc89bb AB |
542 | out: |
543 | spu_release(ctx); | |
67207b96 | 544 | |
cdcc89bb | 545 | return count; |
67207b96 AB |
546 | } |
547 | ||
548 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
549 | { | |
8b3d6663 | 550 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
551 | unsigned int mask; |
552 | ||
8b3d6663 | 553 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 554 | |
3a843d7c AB |
555 | spu_acquire(ctx); |
556 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); | |
557 | spu_release(ctx); | |
67207b96 AB |
558 | |
559 | return mask; | |
560 | } | |
561 | ||
5dfe4c96 | 562 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
563 | .open = spufs_pipe_open, |
564 | .read = spufs_ibox_read, | |
565 | .poll = spufs_ibox_poll, | |
566 | .fasync = spufs_ibox_fasync, | |
567 | }; | |
568 | ||
569 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
570 | size_t len, loff_t *pos) | |
571 | { | |
8b3d6663 | 572 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
573 | u32 ibox_stat; |
574 | ||
575 | if (len < 4) | |
576 | return -EINVAL; | |
577 | ||
8b3d6663 AB |
578 | spu_acquire(ctx); |
579 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; | |
580 | spu_release(ctx); | |
67207b96 AB |
581 | |
582 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
583 | return -EFAULT; | |
584 | ||
585 | return 4; | |
586 | } | |
587 | ||
5dfe4c96 | 588 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
589 | .open = spufs_pipe_open, |
590 | .read = spufs_ibox_stat_read, | |
591 | }; | |
592 | ||
593 | /* low-level mailbox write */ | |
8b3d6663 | 594 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 595 | { |
8b3d6663 AB |
596 | return ctx->ops->wbox_write(ctx, data); |
597 | } | |
67207b96 | 598 | |
8b3d6663 AB |
599 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
600 | { | |
601 | struct spu_context *ctx = file->private_data; | |
602 | int ret; | |
67207b96 | 603 | |
8b3d6663 | 604 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 605 | |
67207b96 AB |
606 | return ret; |
607 | } | |
67207b96 | 608 | |
8b3d6663 AB |
609 | /* interrupt-level wbox callback function. */ |
610 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 611 | { |
8b3d6663 AB |
612 | struct spu_context *ctx = spu->ctx; |
613 | ||
614 | wake_up_all(&ctx->wbox_wq); | |
615 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
616 | } |
617 | ||
cdcc89bb AB |
618 | /* |
619 | * Write as many bytes to the interrupt mailbox as possible, until | |
620 | * one of the conditions becomes true: | |
621 | * | |
622 | * - the mailbox is full | |
623 | * - end of the user provided buffer | |
624 | * - end of the mapped area | |
625 | * | |
626 | * If the file is opened without O_NONBLOCK, we wait here until | |
627 | * space is availabyl, but return when we have been able to | |
628 | * write something. | |
629 | */ | |
67207b96 AB |
630 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
631 | size_t len, loff_t *pos) | |
632 | { | |
8b3d6663 | 633 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
634 | u32 wbox_data, __user *udata; |
635 | ssize_t count; | |
67207b96 AB |
636 | |
637 | if (len < 4) | |
638 | return -EINVAL; | |
639 | ||
cdcc89bb AB |
640 | udata = (void __user *)buf; |
641 | if (!access_ok(VERIFY_READ, buf, len)) | |
642 | return -EFAULT; | |
643 | ||
644 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
645 | return -EFAULT; |
646 | ||
8b3d6663 AB |
647 | spu_acquire(ctx); |
648 | ||
cdcc89bb AB |
649 | /* |
650 | * make sure we can at least write one element, by waiting | |
651 | * in case of !O_NONBLOCK | |
652 | */ | |
653 | count = 0; | |
67207b96 | 654 | if (file->f_flags & O_NONBLOCK) { |
8b3d6663 | 655 | if (!spu_wbox_write(ctx, wbox_data)) |
cdcc89bb | 656 | count = -EAGAIN; |
67207b96 | 657 | } else { |
cdcc89bb | 658 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
67207b96 AB |
659 | } |
660 | ||
cdcc89bb AB |
661 | if (count) |
662 | goto out; | |
8b3d6663 | 663 | |
cdcc89bb AB |
664 | /* write aѕ much as possible */ |
665 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { | |
666 | int ret; | |
667 | ret = __get_user(wbox_data, udata); | |
668 | if (ret) | |
669 | break; | |
670 | ||
671 | ret = spu_wbox_write(ctx, wbox_data); | |
672 | if (ret == 0) | |
673 | break; | |
674 | } | |
675 | ||
676 | out: | |
677 | spu_release(ctx); | |
678 | return count; | |
67207b96 AB |
679 | } |
680 | ||
681 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
682 | { | |
8b3d6663 | 683 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
684 | unsigned int mask; |
685 | ||
8b3d6663 | 686 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 687 | |
3a843d7c AB |
688 | spu_acquire(ctx); |
689 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); | |
690 | spu_release(ctx); | |
67207b96 AB |
691 | |
692 | return mask; | |
693 | } | |
694 | ||
5dfe4c96 | 695 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
696 | .open = spufs_pipe_open, |
697 | .write = spufs_wbox_write, | |
698 | .poll = spufs_wbox_poll, | |
699 | .fasync = spufs_wbox_fasync, | |
700 | }; | |
701 | ||
702 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
703 | size_t len, loff_t *pos) | |
704 | { | |
8b3d6663 | 705 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
706 | u32 wbox_stat; |
707 | ||
708 | if (len < 4) | |
709 | return -EINVAL; | |
710 | ||
8b3d6663 AB |
711 | spu_acquire(ctx); |
712 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; | |
713 | spu_release(ctx); | |
67207b96 AB |
714 | |
715 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
716 | return -EFAULT; | |
717 | ||
718 | return 4; | |
719 | } | |
720 | ||
5dfe4c96 | 721 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
722 | .open = spufs_pipe_open, |
723 | .read = spufs_wbox_stat_read, | |
724 | }; | |
725 | ||
6df10a82 MN |
726 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
727 | { | |
728 | struct spufs_inode_info *i = SPUFS_I(inode); | |
729 | struct spu_context *ctx = i->i_ctx; | |
730 | file->private_data = ctx; | |
731 | file->f_mapping = inode->i_mapping; | |
732 | ctx->signal1 = inode->i_mapping; | |
733 | return nonseekable_open(inode, file); | |
734 | } | |
735 | ||
bf1ab978 | 736 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
737 | size_t len, loff_t *pos) |
738 | { | |
17f88ceb | 739 | int ret = 0; |
67207b96 AB |
740 | u32 data; |
741 | ||
67207b96 AB |
742 | if (len < 4) |
743 | return -EINVAL; | |
744 | ||
17f88ceb DGM |
745 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
746 | data = ctx->csa.spu_chnldata_RW[3]; | |
747 | ret = 4; | |
748 | } | |
8b3d6663 | 749 | |
17f88ceb DGM |
750 | if (!ret) |
751 | goto out; | |
752 | ||
67207b96 AB |
753 | if (copy_to_user(buf, &data, 4)) |
754 | return -EFAULT; | |
755 | ||
17f88ceb DGM |
756 | out: |
757 | return ret; | |
67207b96 AB |
758 | } |
759 | ||
bf1ab978 DGM |
760 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
761 | size_t len, loff_t *pos) | |
762 | { | |
763 | int ret; | |
764 | struct spu_context *ctx = file->private_data; | |
765 | ||
766 | spu_acquire_saved(ctx); | |
767 | ret = __spufs_signal1_read(ctx, buf, len, pos); | |
768 | spu_release(ctx); | |
769 | ||
770 | return ret; | |
771 | } | |
772 | ||
67207b96 AB |
773 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
774 | size_t len, loff_t *pos) | |
775 | { | |
776 | struct spu_context *ctx; | |
67207b96 AB |
777 | u32 data; |
778 | ||
779 | ctx = file->private_data; | |
67207b96 AB |
780 | |
781 | if (len < 4) | |
782 | return -EINVAL; | |
783 | ||
784 | if (copy_from_user(&data, buf, 4)) | |
785 | return -EFAULT; | |
786 | ||
8b3d6663 AB |
787 | spu_acquire(ctx); |
788 | ctx->ops->signal1_write(ctx, data); | |
789 | spu_release(ctx); | |
67207b96 AB |
790 | |
791 | return 4; | |
792 | } | |
793 | ||
6df10a82 MN |
794 | static struct page *spufs_signal1_mmap_nopage(struct vm_area_struct *vma, |
795 | unsigned long address, int *type) | |
796 | { | |
27d5bf2a BH |
797 | #if PAGE_SIZE == 0x1000 |
798 | return spufs_ps_nopage(vma, address, type, 0x14000, 0x1000); | |
799 | #elif PAGE_SIZE == 0x10000 | |
800 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
801 | * signal 1 and 2 area | |
802 | */ | |
803 | return spufs_ps_nopage(vma, address, type, 0x10000, 0x10000); | |
804 | #else | |
805 | #error unsupported page size | |
806 | #endif | |
6df10a82 MN |
807 | } |
808 | ||
809 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { | |
810 | .nopage = spufs_signal1_mmap_nopage, | |
811 | }; | |
812 | ||
813 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
814 | { | |
815 | if (!(vma->vm_flags & VM_SHARED)) | |
816 | return -EINVAL; | |
817 | ||
5c3ecd65 | 818 | vma->vm_flags |= VM_IO; |
6df10a82 | 819 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 820 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
821 | |
822 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
823 | return 0; | |
824 | } | |
6df10a82 | 825 | |
5dfe4c96 | 826 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 827 | .open = spufs_signal1_open, |
67207b96 AB |
828 | .read = spufs_signal1_read, |
829 | .write = spufs_signal1_write, | |
6df10a82 | 830 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
831 | }; |
832 | ||
6df10a82 MN |
833 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
834 | { | |
835 | struct spufs_inode_info *i = SPUFS_I(inode); | |
836 | struct spu_context *ctx = i->i_ctx; | |
837 | file->private_data = ctx; | |
838 | file->f_mapping = inode->i_mapping; | |
839 | ctx->signal2 = inode->i_mapping; | |
840 | return nonseekable_open(inode, file); | |
841 | } | |
842 | ||
bf1ab978 | 843 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
844 | size_t len, loff_t *pos) |
845 | { | |
17f88ceb | 846 | int ret = 0; |
67207b96 AB |
847 | u32 data; |
848 | ||
67207b96 AB |
849 | if (len < 4) |
850 | return -EINVAL; | |
851 | ||
17f88ceb DGM |
852 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
853 | data = ctx->csa.spu_chnldata_RW[4]; | |
854 | ret = 4; | |
855 | } | |
8b3d6663 | 856 | |
17f88ceb DGM |
857 | if (!ret) |
858 | goto out; | |
859 | ||
67207b96 AB |
860 | if (copy_to_user(buf, &data, 4)) |
861 | return -EFAULT; | |
862 | ||
17f88ceb | 863 | out: |
bf1ab978 DGM |
864 | return ret; |
865 | } | |
866 | ||
867 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
868 | size_t len, loff_t *pos) | |
869 | { | |
870 | struct spu_context *ctx = file->private_data; | |
871 | int ret; | |
872 | ||
873 | spu_acquire_saved(ctx); | |
874 | ret = __spufs_signal2_read(ctx, buf, len, pos); | |
875 | spu_release(ctx); | |
876 | ||
877 | return ret; | |
67207b96 AB |
878 | } |
879 | ||
880 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
881 | size_t len, loff_t *pos) | |
882 | { | |
883 | struct spu_context *ctx; | |
67207b96 AB |
884 | u32 data; |
885 | ||
886 | ctx = file->private_data; | |
67207b96 AB |
887 | |
888 | if (len < 4) | |
889 | return -EINVAL; | |
890 | ||
891 | if (copy_from_user(&data, buf, 4)) | |
892 | return -EFAULT; | |
893 | ||
8b3d6663 AB |
894 | spu_acquire(ctx); |
895 | ctx->ops->signal2_write(ctx, data); | |
896 | spu_release(ctx); | |
67207b96 AB |
897 | |
898 | return 4; | |
899 | } | |
900 | ||
27d5bf2a | 901 | #if SPUFS_MMAP_4K |
6df10a82 MN |
902 | static struct page *spufs_signal2_mmap_nopage(struct vm_area_struct *vma, |
903 | unsigned long address, int *type) | |
904 | { | |
27d5bf2a BH |
905 | #if PAGE_SIZE == 0x1000 |
906 | return spufs_ps_nopage(vma, address, type, 0x1c000, 0x1000); | |
907 | #elif PAGE_SIZE == 0x10000 | |
908 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
909 | * signal 1 and 2 area | |
910 | */ | |
911 | return spufs_ps_nopage(vma, address, type, 0x10000, 0x10000); | |
912 | #else | |
913 | #error unsupported page size | |
914 | #endif | |
6df10a82 MN |
915 | } |
916 | ||
917 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { | |
918 | .nopage = spufs_signal2_mmap_nopage, | |
919 | }; | |
920 | ||
921 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
922 | { | |
923 | if (!(vma->vm_flags & VM_SHARED)) | |
924 | return -EINVAL; | |
925 | ||
5c3ecd65 | 926 | vma->vm_flags |= VM_IO; |
6df10a82 | 927 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 928 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
929 | |
930 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
931 | return 0; | |
932 | } | |
27d5bf2a BH |
933 | #else /* SPUFS_MMAP_4K */ |
934 | #define spufs_signal2_mmap NULL | |
935 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 936 | |
5dfe4c96 | 937 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 938 | .open = spufs_signal2_open, |
67207b96 AB |
939 | .read = spufs_signal2_read, |
940 | .write = spufs_signal2_write, | |
6df10a82 | 941 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
942 | }; |
943 | ||
944 | static void spufs_signal1_type_set(void *data, u64 val) | |
945 | { | |
946 | struct spu_context *ctx = data; | |
67207b96 | 947 | |
8b3d6663 AB |
948 | spu_acquire(ctx); |
949 | ctx->ops->signal1_type_set(ctx, val); | |
950 | spu_release(ctx); | |
67207b96 AB |
951 | } |
952 | ||
bf1ab978 DGM |
953 | static u64 __spufs_signal1_type_get(void *data) |
954 | { | |
955 | struct spu_context *ctx = data; | |
956 | return ctx->ops->signal1_type_get(ctx); | |
957 | } | |
958 | ||
67207b96 AB |
959 | static u64 spufs_signal1_type_get(void *data) |
960 | { | |
961 | struct spu_context *ctx = data; | |
8b3d6663 AB |
962 | u64 ret; |
963 | ||
964 | spu_acquire(ctx); | |
bf1ab978 | 965 | ret = __spufs_signal1_type_get(data); |
8b3d6663 AB |
966 | spu_release(ctx); |
967 | ||
968 | return ret; | |
67207b96 AB |
969 | } |
970 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, | |
971 | spufs_signal1_type_set, "%llu"); | |
972 | ||
973 | static void spufs_signal2_type_set(void *data, u64 val) | |
974 | { | |
975 | struct spu_context *ctx = data; | |
67207b96 | 976 | |
8b3d6663 AB |
977 | spu_acquire(ctx); |
978 | ctx->ops->signal2_type_set(ctx, val); | |
979 | spu_release(ctx); | |
67207b96 AB |
980 | } |
981 | ||
bf1ab978 DGM |
982 | static u64 __spufs_signal2_type_get(void *data) |
983 | { | |
984 | struct spu_context *ctx = data; | |
985 | return ctx->ops->signal2_type_get(ctx); | |
986 | } | |
987 | ||
67207b96 AB |
988 | static u64 spufs_signal2_type_get(void *data) |
989 | { | |
990 | struct spu_context *ctx = data; | |
8b3d6663 AB |
991 | u64 ret; |
992 | ||
993 | spu_acquire(ctx); | |
bf1ab978 | 994 | ret = __spufs_signal2_type_get(data); |
8b3d6663 AB |
995 | spu_release(ctx); |
996 | ||
997 | return ret; | |
67207b96 AB |
998 | } |
999 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, | |
1000 | spufs_signal2_type_set, "%llu"); | |
1001 | ||
27d5bf2a | 1002 | #if SPUFS_MMAP_4K |
d9379c4b AB |
1003 | static struct page *spufs_mss_mmap_nopage(struct vm_area_struct *vma, |
1004 | unsigned long address, int *type) | |
1005 | { | |
27d5bf2a | 1006 | return spufs_ps_nopage(vma, address, type, 0x0000, 0x1000); |
d9379c4b AB |
1007 | } |
1008 | ||
1009 | static struct vm_operations_struct spufs_mss_mmap_vmops = { | |
1010 | .nopage = spufs_mss_mmap_nopage, | |
1011 | }; | |
1012 | ||
1013 | /* | |
1014 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1015 | */ |
1016 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1017 | { | |
1018 | if (!(vma->vm_flags & VM_SHARED)) | |
1019 | return -EINVAL; | |
1020 | ||
5c3ecd65 | 1021 | vma->vm_flags |= VM_IO; |
d9379c4b | 1022 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1023 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
d9379c4b AB |
1024 | |
1025 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1026 | return 0; | |
1027 | } | |
27d5bf2a BH |
1028 | #else /* SPUFS_MMAP_4K */ |
1029 | #define spufs_mss_mmap NULL | |
1030 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1031 | |
1032 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1033 | { | |
1034 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1035 | ||
1036 | file->private_data = i->i_ctx; | |
1037 | return nonseekable_open(inode, file); | |
1038 | } | |
1039 | ||
5dfe4c96 | 1040 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1041 | .open = spufs_mss_open, |
d9379c4b | 1042 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1043 | }; |
1044 | ||
1045 | static struct page *spufs_psmap_mmap_nopage(struct vm_area_struct *vma, | |
1046 | unsigned long address, int *type) | |
1047 | { | |
1048 | return spufs_ps_nopage(vma, address, type, 0x0000, 0x20000); | |
1049 | } | |
1050 | ||
1051 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { | |
1052 | .nopage = spufs_psmap_mmap_nopage, | |
1053 | }; | |
1054 | ||
1055 | /* | |
1056 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1057 | */ | |
1058 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1059 | { | |
1060 | if (!(vma->vm_flags & VM_SHARED)) | |
1061 | return -EINVAL; | |
1062 | ||
5c3ecd65 | 1063 | vma->vm_flags |= VM_IO; |
27d5bf2a BH |
1064 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
1065 | | _PAGE_NO_CACHE | _PAGE_GUARDED); | |
1066 | ||
1067 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1072 | { | |
1073 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1074 | ||
1075 | file->private_data = i->i_ctx; | |
1076 | return nonseekable_open(inode, file); | |
1077 | } | |
1078 | ||
5dfe4c96 | 1079 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a BH |
1080 | .open = spufs_psmap_open, |
1081 | .mmap = spufs_psmap_mmap, | |
d9379c4b AB |
1082 | }; |
1083 | ||
1084 | ||
27d5bf2a | 1085 | #if SPUFS_MMAP_4K |
6df10a82 MN |
1086 | static struct page *spufs_mfc_mmap_nopage(struct vm_area_struct *vma, |
1087 | unsigned long address, int *type) | |
1088 | { | |
27d5bf2a | 1089 | return spufs_ps_nopage(vma, address, type, 0x3000, 0x1000); |
6df10a82 MN |
1090 | } |
1091 | ||
1092 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { | |
1093 | .nopage = spufs_mfc_mmap_nopage, | |
1094 | }; | |
1095 | ||
1096 | /* | |
1097 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1098 | */ |
1099 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1100 | { | |
1101 | if (!(vma->vm_flags & VM_SHARED)) | |
1102 | return -EINVAL; | |
1103 | ||
5c3ecd65 | 1104 | vma->vm_flags |= VM_IO; |
6df10a82 | 1105 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1106 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1107 | |
1108 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1109 | return 0; | |
1110 | } | |
27d5bf2a BH |
1111 | #else /* SPUFS_MMAP_4K */ |
1112 | #define spufs_mfc_mmap NULL | |
1113 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1114 | |
1115 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1116 | { | |
1117 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1118 | struct spu_context *ctx = i->i_ctx; | |
1119 | ||
1120 | /* we don't want to deal with DMA into other processes */ | |
1121 | if (ctx->owner != current->mm) | |
1122 | return -EINVAL; | |
1123 | ||
1124 | if (atomic_read(&inode->i_count) != 1) | |
1125 | return -EBUSY; | |
1126 | ||
1127 | file->private_data = ctx; | |
1128 | return nonseekable_open(inode, file); | |
1129 | } | |
1130 | ||
1131 | /* interrupt-level mfc callback function. */ | |
1132 | void spufs_mfc_callback(struct spu *spu) | |
1133 | { | |
1134 | struct spu_context *ctx = spu->ctx; | |
1135 | ||
1136 | wake_up_all(&ctx->mfc_wq); | |
1137 | ||
1138 | pr_debug("%s %s\n", __FUNCTION__, spu->name); | |
1139 | if (ctx->mfc_fasync) { | |
1140 | u32 free_elements, tagstatus; | |
1141 | unsigned int mask; | |
1142 | ||
1143 | /* no need for spu_acquire in interrupt context */ | |
1144 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1145 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1146 | ||
1147 | mask = 0; | |
1148 | if (free_elements & 0xffff) | |
1149 | mask |= POLLOUT; | |
1150 | if (tagstatus & ctx->tagwait) | |
1151 | mask |= POLLIN; | |
1152 | ||
1153 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1158 | { | |
1159 | /* See if there is one tag group is complete */ | |
1160 | /* FIXME we need locking around tagwait */ | |
1161 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1162 | ctx->tagwait &= ~*status; | |
1163 | if (*status) | |
1164 | return 1; | |
1165 | ||
1166 | /* enable interrupt waiting for any tag group, | |
1167 | may silently fail if interrupts are already enabled */ | |
1168 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1173 | size_t size, loff_t *pos) | |
1174 | { | |
1175 | struct spu_context *ctx = file->private_data; | |
1176 | int ret = -EINVAL; | |
1177 | u32 status; | |
1178 | ||
1179 | if (size != 4) | |
1180 | goto out; | |
1181 | ||
1182 | spu_acquire(ctx); | |
1183 | if (file->f_flags & O_NONBLOCK) { | |
1184 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1185 | if (!(status & ctx->tagwait)) | |
1186 | ret = -EAGAIN; | |
1187 | else | |
1188 | ctx->tagwait &= ~status; | |
1189 | } else { | |
1190 | ret = spufs_wait(ctx->mfc_wq, | |
1191 | spufs_read_mfc_tagstatus(ctx, &status)); | |
1192 | } | |
1193 | spu_release(ctx); | |
1194 | ||
1195 | if (ret) | |
1196 | goto out; | |
1197 | ||
1198 | ret = 4; | |
1199 | if (copy_to_user(buffer, &status, 4)) | |
1200 | ret = -EFAULT; | |
1201 | ||
1202 | out: | |
1203 | return ret; | |
1204 | } | |
1205 | ||
1206 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1207 | { | |
1208 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, | |
1209 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); | |
1210 | ||
1211 | switch (cmd->cmd) { | |
1212 | case MFC_PUT_CMD: | |
1213 | case MFC_PUTF_CMD: | |
1214 | case MFC_PUTB_CMD: | |
1215 | case MFC_GET_CMD: | |
1216 | case MFC_GETF_CMD: | |
1217 | case MFC_GETB_CMD: | |
1218 | break; | |
1219 | default: | |
1220 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1221 | return -EIO; | |
1222 | } | |
1223 | ||
1224 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
1225 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", | |
1226 | cmd->ea, cmd->lsa); | |
1227 | return -EIO; | |
1228 | } | |
1229 | ||
1230 | switch (cmd->size & 0xf) { | |
1231 | case 1: | |
1232 | break; | |
1233 | case 2: | |
1234 | if (cmd->lsa & 1) | |
1235 | goto error; | |
1236 | break; | |
1237 | case 4: | |
1238 | if (cmd->lsa & 3) | |
1239 | goto error; | |
1240 | break; | |
1241 | case 8: | |
1242 | if (cmd->lsa & 7) | |
1243 | goto error; | |
1244 | break; | |
1245 | case 0: | |
1246 | if (cmd->lsa & 15) | |
1247 | goto error; | |
1248 | break; | |
1249 | error: | |
1250 | default: | |
1251 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1252 | cmd->lsa & 0xf, cmd->size); | |
1253 | return -EIO; | |
1254 | } | |
1255 | ||
1256 | if (cmd->size > 16 * 1024) { | |
1257 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1258 | return -EIO; | |
1259 | } | |
1260 | ||
1261 | if (cmd->tag & 0xfff0) { | |
1262 | /* we reserve the higher tag numbers for kernel use */ | |
1263 | pr_debug("invalid DMA tag\n"); | |
1264 | return -EIO; | |
1265 | } | |
1266 | ||
1267 | if (cmd->class) { | |
1268 | /* not supported in this version */ | |
1269 | pr_debug("invalid DMA class\n"); | |
1270 | return -EIO; | |
1271 | } | |
1272 | ||
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1277 | struct mfc_dma_command cmd, | |
1278 | int *error) | |
1279 | { | |
1280 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1281 | if (*error == -EAGAIN) { | |
1282 | /* wait for any tag group to complete | |
1283 | so we have space for the new command */ | |
1284 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1285 | /* try again, because the queue might be | |
1286 | empty again */ | |
1287 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1288 | if (*error == -EAGAIN) | |
1289 | return 0; | |
1290 | } | |
1291 | return 1; | |
1292 | } | |
1293 | ||
1294 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1295 | size_t size, loff_t *pos) | |
1296 | { | |
1297 | struct spu_context *ctx = file->private_data; | |
1298 | struct mfc_dma_command cmd; | |
1299 | int ret = -EINVAL; | |
1300 | ||
1301 | if (size != sizeof cmd) | |
1302 | goto out; | |
1303 | ||
1304 | ret = -EFAULT; | |
1305 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1306 | goto out; | |
1307 | ||
1308 | ret = spufs_check_valid_dma(&cmd); | |
1309 | if (ret) | |
1310 | goto out; | |
1311 | ||
1312 | spu_acquire_runnable(ctx); | |
1313 | if (file->f_flags & O_NONBLOCK) { | |
1314 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1315 | } else { | |
1316 | int status; | |
1317 | ret = spufs_wait(ctx->mfc_wq, | |
1318 | spu_send_mfc_command(ctx, cmd, &status)); | |
1319 | if (status) | |
1320 | ret = status; | |
1321 | } | |
1322 | spu_release(ctx); | |
1323 | ||
1324 | if (ret) | |
1325 | goto out; | |
1326 | ||
1327 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1328 | ret = size; |
a33a7d73 AB |
1329 | |
1330 | out: | |
1331 | return ret; | |
1332 | } | |
1333 | ||
1334 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1335 | { | |
1336 | struct spu_context *ctx = file->private_data; | |
1337 | u32 free_elements, tagstatus; | |
1338 | unsigned int mask; | |
1339 | ||
1340 | spu_acquire(ctx); | |
1341 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); | |
1342 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1343 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1344 | spu_release(ctx); | |
1345 | ||
1346 | poll_wait(file, &ctx->mfc_wq, wait); | |
1347 | ||
1348 | mask = 0; | |
1349 | if (free_elements & 0xffff) | |
1350 | mask |= POLLOUT | POLLWRNORM; | |
1351 | if (tagstatus & ctx->tagwait) | |
1352 | mask |= POLLIN | POLLRDNORM; | |
1353 | ||
1354 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, | |
1355 | free_elements, tagstatus, ctx->tagwait); | |
1356 | ||
1357 | return mask; | |
1358 | } | |
1359 | ||
73b6af8a | 1360 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1361 | { |
1362 | struct spu_context *ctx = file->private_data; | |
1363 | int ret; | |
1364 | ||
1365 | spu_acquire(ctx); | |
1366 | #if 0 | |
1367 | /* this currently hangs */ | |
1368 | ret = spufs_wait(ctx->mfc_wq, | |
1369 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1370 | if (ret) | |
1371 | goto out; | |
1372 | ret = spufs_wait(ctx->mfc_wq, | |
1373 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
1374 | out: | |
1375 | #else | |
1376 | ret = 0; | |
1377 | #endif | |
1378 | spu_release(ctx); | |
1379 | ||
1380 | return ret; | |
1381 | } | |
1382 | ||
1383 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1384 | int datasync) | |
1385 | { | |
73b6af8a | 1386 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1387 | } |
1388 | ||
1389 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1390 | { | |
1391 | struct spu_context *ctx = file->private_data; | |
1392 | ||
1393 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1394 | } | |
1395 | ||
5dfe4c96 | 1396 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 AB |
1397 | .open = spufs_mfc_open, |
1398 | .read = spufs_mfc_read, | |
1399 | .write = spufs_mfc_write, | |
1400 | .poll = spufs_mfc_poll, | |
1401 | .flush = spufs_mfc_flush, | |
1402 | .fsync = spufs_mfc_fsync, | |
1403 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1404 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1405 | }; |
1406 | ||
67207b96 AB |
1407 | static void spufs_npc_set(void *data, u64 val) |
1408 | { | |
1409 | struct spu_context *ctx = data; | |
8b3d6663 AB |
1410 | spu_acquire(ctx); |
1411 | ctx->ops->npc_write(ctx, val); | |
1412 | spu_release(ctx); | |
67207b96 AB |
1413 | } |
1414 | ||
1415 | static u64 spufs_npc_get(void *data) | |
1416 | { | |
1417 | struct spu_context *ctx = data; | |
1418 | u64 ret; | |
8b3d6663 AB |
1419 | spu_acquire(ctx); |
1420 | ret = ctx->ops->npc_read(ctx); | |
1421 | spu_release(ctx); | |
67207b96 AB |
1422 | return ret; |
1423 | } | |
9b5047e2 DGM |
1424 | DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1425 | "0x%llx\n") | |
67207b96 | 1426 | |
8b3d6663 AB |
1427 | static void spufs_decr_set(void *data, u64 val) |
1428 | { | |
1429 | struct spu_context *ctx = data; | |
1430 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1431 | spu_acquire_saved(ctx); | |
1432 | lscsa->decr.slot[0] = (u32) val; | |
1433 | spu_release(ctx); | |
1434 | } | |
1435 | ||
bf1ab978 | 1436 | static u64 __spufs_decr_get(void *data) |
8b3d6663 AB |
1437 | { |
1438 | struct spu_context *ctx = data; | |
1439 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
bf1ab978 DGM |
1440 | return lscsa->decr.slot[0]; |
1441 | } | |
1442 | ||
1443 | static u64 spufs_decr_get(void *data) | |
1444 | { | |
1445 | struct spu_context *ctx = data; | |
8b3d6663 AB |
1446 | u64 ret; |
1447 | spu_acquire_saved(ctx); | |
bf1ab978 | 1448 | ret = __spufs_decr_get(data); |
8b3d6663 AB |
1449 | spu_release(ctx); |
1450 | return ret; | |
1451 | } | |
1452 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, | |
9b5047e2 | 1453 | "0x%llx\n") |
8b3d6663 AB |
1454 | |
1455 | static void spufs_decr_status_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->decr_status.slot[0] = (u32) val; | |
1461 | spu_release(ctx); | |
1462 | } | |
1463 | ||
bf1ab978 | 1464 | static u64 __spufs_decr_status_get(void *data) |
8b3d6663 AB |
1465 | { |
1466 | struct spu_context *ctx = data; | |
1467 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
bf1ab978 DGM |
1468 | return lscsa->decr_status.slot[0]; |
1469 | } | |
1470 | ||
1471 | static u64 spufs_decr_status_get(void *data) | |
1472 | { | |
1473 | struct spu_context *ctx = data; | |
8b3d6663 AB |
1474 | u64 ret; |
1475 | spu_acquire_saved(ctx); | |
bf1ab978 | 1476 | ret = __spufs_decr_status_get(data); |
8b3d6663 AB |
1477 | spu_release(ctx); |
1478 | return ret; | |
1479 | } | |
1480 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, | |
9b5047e2 | 1481 | spufs_decr_status_set, "0x%llx\n") |
8b3d6663 | 1482 | |
8b3d6663 AB |
1483 | static void spufs_event_mask_set(void *data, u64 val) |
1484 | { | |
1485 | struct spu_context *ctx = data; | |
1486 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1487 | spu_acquire_saved(ctx); | |
1488 | lscsa->event_mask.slot[0] = (u32) val; | |
1489 | spu_release(ctx); | |
1490 | } | |
1491 | ||
bf1ab978 | 1492 | static u64 __spufs_event_mask_get(void *data) |
8b3d6663 AB |
1493 | { |
1494 | struct spu_context *ctx = data; | |
1495 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
bf1ab978 DGM |
1496 | return lscsa->event_mask.slot[0]; |
1497 | } | |
1498 | ||
1499 | static u64 spufs_event_mask_get(void *data) | |
1500 | { | |
1501 | struct spu_context *ctx = data; | |
8b3d6663 AB |
1502 | u64 ret; |
1503 | spu_acquire_saved(ctx); | |
bf1ab978 | 1504 | ret = __spufs_event_mask_get(data); |
8b3d6663 AB |
1505 | spu_release(ctx); |
1506 | return ret; | |
1507 | } | |
1508 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, | |
9b5047e2 | 1509 | spufs_event_mask_set, "0x%llx\n") |
8b3d6663 | 1510 | |
bf1ab978 | 1511 | static u64 __spufs_event_status_get(void *data) |
b9e3bd77 DGM |
1512 | { |
1513 | struct spu_context *ctx = data; | |
1514 | struct spu_state *state = &ctx->csa; | |
b9e3bd77 | 1515 | u64 stat; |
b9e3bd77 DGM |
1516 | stat = state->spu_chnlcnt_RW[0]; |
1517 | if (stat) | |
bf1ab978 DGM |
1518 | return state->spu_chnldata_RW[0]; |
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | static u64 spufs_event_status_get(void *data) | |
1523 | { | |
1524 | struct spu_context *ctx = data; | |
1525 | u64 ret = 0; | |
1526 | ||
1527 | spu_acquire_saved(ctx); | |
1528 | ret = __spufs_event_status_get(data); | |
b9e3bd77 DGM |
1529 | spu_release(ctx); |
1530 | return ret; | |
1531 | } | |
1532 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, | |
1533 | NULL, "0x%llx\n") | |
1534 | ||
8b3d6663 AB |
1535 | static void spufs_srr0_set(void *data, u64 val) |
1536 | { | |
1537 | struct spu_context *ctx = data; | |
1538 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1539 | spu_acquire_saved(ctx); | |
1540 | lscsa->srr0.slot[0] = (u32) val; | |
1541 | spu_release(ctx); | |
1542 | } | |
1543 | ||
1544 | static u64 spufs_srr0_get(void *data) | |
1545 | { | |
1546 | struct spu_context *ctx = data; | |
1547 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1548 | u64 ret; | |
1549 | spu_acquire_saved(ctx); | |
1550 | ret = lscsa->srr0.slot[0]; | |
1551 | spu_release(ctx); | |
1552 | return ret; | |
1553 | } | |
1554 | DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, | |
9b5047e2 | 1555 | "0x%llx\n") |
8b3d6663 | 1556 | |
7b1a7014 AB |
1557 | static u64 spufs_id_get(void *data) |
1558 | { | |
1559 | struct spu_context *ctx = data; | |
1560 | u64 num; | |
1561 | ||
1562 | spu_acquire(ctx); | |
1563 | if (ctx->state == SPU_STATE_RUNNABLE) | |
1564 | num = ctx->spu->number; | |
1565 | else | |
1566 | num = (unsigned int)-1; | |
1567 | spu_release(ctx); | |
1568 | ||
1569 | return num; | |
1570 | } | |
e45d6634 | 1571 | DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n") |
7b1a7014 | 1572 | |
bf1ab978 | 1573 | static u64 __spufs_object_id_get(void *data) |
86767277 AB |
1574 | { |
1575 | struct spu_context *ctx = data; | |
1576 | return ctx->object_id; | |
1577 | } | |
1578 | ||
bf1ab978 DGM |
1579 | static u64 spufs_object_id_get(void *data) |
1580 | { | |
1581 | /* FIXME: Should there really be no locking here? */ | |
1582 | return __spufs_object_id_get(data); | |
1583 | } | |
1584 | ||
86767277 AB |
1585 | static void spufs_object_id_set(void *data, u64 id) |
1586 | { | |
1587 | struct spu_context *ctx = data; | |
1588 | ctx->object_id = id; | |
1589 | } | |
1590 | ||
1591 | DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, | |
1592 | spufs_object_id_set, "0x%llx\n"); | |
1593 | ||
bf1ab978 DGM |
1594 | static u64 __spufs_lslr_get(void *data) |
1595 | { | |
1596 | struct spu_context *ctx = data; | |
1597 | return ctx->csa.priv2.spu_lslr_RW; | |
1598 | } | |
1599 | ||
b9e3bd77 DGM |
1600 | static u64 spufs_lslr_get(void *data) |
1601 | { | |
1602 | struct spu_context *ctx = data; | |
1603 | u64 ret; | |
1604 | ||
1605 | spu_acquire_saved(ctx); | |
bf1ab978 | 1606 | ret = __spufs_lslr_get(data); |
b9e3bd77 DGM |
1607 | spu_release(ctx); |
1608 | ||
1609 | return ret; | |
1610 | } | |
1611 | DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n") | |
1612 | ||
1613 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1614 | { | |
1615 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1616 | struct spu_context *ctx = i->i_ctx; | |
1617 | file->private_data = ctx; | |
1618 | return 0; | |
1619 | } | |
1620 | ||
bf1ab978 DGM |
1621 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
1622 | char __user *buf, size_t len, loff_t *pos) | |
1623 | { | |
1624 | u32 mbox_stat; | |
1625 | u32 data; | |
1626 | ||
1627 | mbox_stat = ctx->csa.prob.mb_stat_R; | |
1628 | if (mbox_stat & 0x0000ff) { | |
1629 | data = ctx->csa.prob.pu_mb_R; | |
1630 | } | |
1631 | ||
1632 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1633 | } | |
1634 | ||
69a2f00c DGM |
1635 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1636 | size_t len, loff_t *pos) | |
1637 | { | |
bf1ab978 | 1638 | int ret; |
69a2f00c | 1639 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
1640 | |
1641 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1642 | return -EFAULT; | |
1643 | ||
1644 | spu_acquire_saved(ctx); | |
1645 | spin_lock(&ctx->csa.register_lock); | |
bf1ab978 | 1646 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c DGM |
1647 | spin_unlock(&ctx->csa.register_lock); |
1648 | spu_release(ctx); | |
1649 | ||
bf1ab978 | 1650 | return ret; |
69a2f00c DGM |
1651 | } |
1652 | ||
5dfe4c96 | 1653 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
1654 | .open = spufs_info_open, |
1655 | .read = spufs_mbox_info_read, | |
1656 | .llseek = generic_file_llseek, | |
1657 | }; | |
1658 | ||
bf1ab978 DGM |
1659 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
1660 | char __user *buf, size_t len, loff_t *pos) | |
1661 | { | |
1662 | u32 ibox_stat; | |
1663 | u32 data; | |
1664 | ||
1665 | ibox_stat = ctx->csa.prob.mb_stat_R; | |
1666 | if (ibox_stat & 0xff0000) { | |
1667 | data = ctx->csa.priv2.puint_mb_R; | |
1668 | } | |
1669 | ||
1670 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1671 | } | |
1672 | ||
69a2f00c DGM |
1673 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
1674 | size_t len, loff_t *pos) | |
1675 | { | |
1676 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 1677 | int ret; |
69a2f00c DGM |
1678 | |
1679 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1680 | return -EFAULT; | |
1681 | ||
1682 | spu_acquire_saved(ctx); | |
1683 | spin_lock(&ctx->csa.register_lock); | |
bf1ab978 | 1684 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c DGM |
1685 | spin_unlock(&ctx->csa.register_lock); |
1686 | spu_release(ctx); | |
1687 | ||
bf1ab978 | 1688 | return ret; |
69a2f00c DGM |
1689 | } |
1690 | ||
5dfe4c96 | 1691 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
1692 | .open = spufs_info_open, |
1693 | .read = spufs_ibox_info_read, | |
1694 | .llseek = generic_file_llseek, | |
1695 | }; | |
1696 | ||
bf1ab978 DGM |
1697 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
1698 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 1699 | { |
69a2f00c DGM |
1700 | int i, cnt; |
1701 | u32 data[4]; | |
1702 | u32 wbox_stat; | |
1703 | ||
bf1ab978 DGM |
1704 | wbox_stat = ctx->csa.prob.mb_stat_R; |
1705 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
1706 | for (i = 0; i < cnt; i++) { | |
1707 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
1708 | } | |
1709 | ||
1710 | return simple_read_from_buffer(buf, len, pos, &data, | |
1711 | cnt * sizeof(u32)); | |
1712 | } | |
1713 | ||
1714 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
1715 | size_t len, loff_t *pos) | |
1716 | { | |
1717 | struct spu_context *ctx = file->private_data; | |
1718 | int ret; | |
1719 | ||
69a2f00c DGM |
1720 | if (!access_ok(VERIFY_WRITE, buf, len)) |
1721 | return -EFAULT; | |
1722 | ||
1723 | spu_acquire_saved(ctx); | |
1724 | spin_lock(&ctx->csa.register_lock); | |
bf1ab978 | 1725 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c DGM |
1726 | spin_unlock(&ctx->csa.register_lock); |
1727 | spu_release(ctx); | |
1728 | ||
bf1ab978 | 1729 | return ret; |
69a2f00c DGM |
1730 | } |
1731 | ||
5dfe4c96 | 1732 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
1733 | .open = spufs_info_open, |
1734 | .read = spufs_wbox_info_read, | |
1735 | .llseek = generic_file_llseek, | |
1736 | }; | |
1737 | ||
bf1ab978 DGM |
1738 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
1739 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 1740 | { |
b9e3bd77 DGM |
1741 | struct spu_dma_info info; |
1742 | struct mfc_cq_sr *qp, *spuqp; | |
1743 | int i; | |
1744 | ||
b9e3bd77 DGM |
1745 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
1746 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
1747 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
1748 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
1749 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
1750 | for (i = 0; i < 16; i++) { | |
1751 | qp = &info.dma_info_command_data[i]; | |
1752 | spuqp = &ctx->csa.priv2.spuq[i]; | |
1753 | ||
1754 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
1755 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
1756 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
1757 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
1758 | } | |
b9e3bd77 DGM |
1759 | |
1760 | return simple_read_from_buffer(buf, len, pos, &info, | |
1761 | sizeof info); | |
1762 | } | |
1763 | ||
bf1ab978 DGM |
1764 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
1765 | size_t len, loff_t *pos) | |
1766 | { | |
1767 | struct spu_context *ctx = file->private_data; | |
1768 | int ret; | |
1769 | ||
1770 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1771 | return -EFAULT; | |
1772 | ||
1773 | spu_acquire_saved(ctx); | |
1774 | spin_lock(&ctx->csa.register_lock); | |
1775 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
1776 | spin_unlock(&ctx->csa.register_lock); | |
1777 | spu_release(ctx); | |
1778 | ||
1779 | return ret; | |
1780 | } | |
1781 | ||
5dfe4c96 | 1782 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
1783 | .open = spufs_info_open, |
1784 | .read = spufs_dma_info_read, | |
1785 | }; | |
1786 | ||
bf1ab978 DGM |
1787 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
1788 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 1789 | { |
b9e3bd77 | 1790 | struct spu_proxydma_info info; |
b9e3bd77 | 1791 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 1792 | int ret = sizeof info; |
b9e3bd77 DGM |
1793 | int i; |
1794 | ||
1795 | if (len < ret) | |
1796 | return -EINVAL; | |
1797 | ||
1798 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1799 | return -EFAULT; | |
1800 | ||
b9e3bd77 DGM |
1801 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
1802 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
1803 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
1804 | for (i = 0; i < 8; i++) { | |
1805 | qp = &info.proxydma_info_command_data[i]; | |
1806 | puqp = &ctx->csa.priv2.puq[i]; | |
1807 | ||
1808 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
1809 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
1810 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
1811 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
1812 | } | |
bf1ab978 DGM |
1813 | |
1814 | return simple_read_from_buffer(buf, len, pos, &info, | |
1815 | sizeof info); | |
1816 | } | |
1817 | ||
1818 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
1819 | size_t len, loff_t *pos) | |
1820 | { | |
1821 | struct spu_context *ctx = file->private_data; | |
1822 | int ret; | |
1823 | ||
1824 | spu_acquire_saved(ctx); | |
1825 | spin_lock(&ctx->csa.register_lock); | |
1826 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 DGM |
1827 | spin_unlock(&ctx->csa.register_lock); |
1828 | spu_release(ctx); | |
1829 | ||
b9e3bd77 DGM |
1830 | return ret; |
1831 | } | |
1832 | ||
5dfe4c96 | 1833 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
1834 | .open = spufs_info_open, |
1835 | .read = spufs_proxydma_info_read, | |
1836 | }; | |
1837 | ||
67207b96 AB |
1838 | struct tree_descr spufs_dir_contents[] = { |
1839 | { "mem", &spufs_mem_fops, 0666, }, | |
8b3d6663 | 1840 | { "regs", &spufs_regs_fops, 0666, }, |
67207b96 AB |
1841 | { "mbox", &spufs_mbox_fops, 0444, }, |
1842 | { "ibox", &spufs_ibox_fops, 0444, }, | |
1843 | { "wbox", &spufs_wbox_fops, 0222, }, | |
1844 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
1845 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
1846 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
1847 | { "signal1", &spufs_signal1_fops, 0666, }, | |
1848 | { "signal2", &spufs_signal2_fops, 0666, }, | |
1849 | { "signal1_type", &spufs_signal1_type, 0666, }, | |
1850 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 1851 | { "cntl", &spufs_cntl_fops, 0666, }, |
8b3d6663 | 1852 | { "fpcr", &spufs_fpcr_fops, 0666, }, |
b9e3bd77 DGM |
1853 | { "lslr", &spufs_lslr_ops, 0444, }, |
1854 | { "mfc", &spufs_mfc_fops, 0666, }, | |
1855 | { "mss", &spufs_mss_fops, 0666, }, | |
1856 | { "npc", &spufs_npc_ops, 0666, }, | |
1857 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
1858 | { "decr", &spufs_decr_ops, 0666, }, |
1859 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 1860 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 1861 | { "event_status", &spufs_event_status_ops, 0444, }, |
27d5bf2a | 1862 | { "psmap", &spufs_psmap_fops, 0666, }, |
86767277 AB |
1863 | { "phys-id", &spufs_id_ops, 0666, }, |
1864 | { "object-id", &spufs_object_id_ops, 0666, }, | |
69a2f00c DGM |
1865 | { "mbox_info", &spufs_mbox_info_fops, 0444, }, |
1866 | { "ibox_info", &spufs_ibox_info_fops, 0444, }, | |
1867 | { "wbox_info", &spufs_wbox_info_fops, 0444, }, | |
b9e3bd77 DGM |
1868 | { "dma_info", &spufs_dma_info_fops, 0444, }, |
1869 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, | |
67207b96 AB |
1870 | {}, |
1871 | }; | |
5737edd1 MN |
1872 | |
1873 | struct tree_descr spufs_dir_nosched_contents[] = { | |
1874 | { "mem", &spufs_mem_fops, 0666, }, | |
1875 | { "mbox", &spufs_mbox_fops, 0444, }, | |
1876 | { "ibox", &spufs_ibox_fops, 0444, }, | |
1877 | { "wbox", &spufs_wbox_fops, 0222, }, | |
1878 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
1879 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
1880 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
1881 | { "signal1", &spufs_signal1_fops, 0666, }, | |
1882 | { "signal2", &spufs_signal2_fops, 0666, }, | |
1883 | { "signal1_type", &spufs_signal1_type, 0666, }, | |
1884 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
1885 | { "mss", &spufs_mss_fops, 0666, }, | |
1886 | { "mfc", &spufs_mfc_fops, 0666, }, | |
1887 | { "cntl", &spufs_cntl_fops, 0666, }, | |
1888 | { "npc", &spufs_npc_ops, 0666, }, | |
1889 | { "psmap", &spufs_psmap_fops, 0666, }, | |
1890 | { "phys-id", &spufs_id_ops, 0666, }, | |
1891 | { "object-id", &spufs_object_id_ops, 0666, }, | |
1892 | {}, | |
1893 | }; | |
bf1ab978 DGM |
1894 | |
1895 | struct spufs_coredump_reader spufs_coredump_read[] = { | |
1896 | { "regs", __spufs_regs_read, NULL, 128 * 16 }, | |
1897 | { "fpcr", __spufs_fpcr_read, NULL, 16 }, | |
1898 | { "lslr", NULL, __spufs_lslr_get, 11 }, | |
1899 | { "decr", NULL, __spufs_decr_get, 11 }, | |
1900 | { "decr_status", NULL, __spufs_decr_status_get, 11 }, | |
1901 | { "mem", __spufs_mem_read, NULL, 256 * 1024, }, | |
1902 | { "signal1", __spufs_signal1_read, NULL, 4 }, | |
1903 | { "signal1_type", NULL, __spufs_signal1_type_get, 2 }, | |
1904 | { "signal2", __spufs_signal2_read, NULL, 4 }, | |
1905 | { "signal2_type", NULL, __spufs_signal2_type_get, 2 }, | |
1906 | { "event_mask", NULL, __spufs_event_mask_get, 8 }, | |
1907 | { "event_status", NULL, __spufs_event_status_get, 8 }, | |
1908 | { "mbox_info", __spufs_mbox_info_read, NULL, 4 }, | |
1909 | { "ibox_info", __spufs_ibox_info_read, NULL, 4 }, | |
1910 | { "wbox_info", __spufs_wbox_info_read, NULL, 16 }, | |
1911 | { "dma_info", __spufs_dma_info_read, NULL, 69 * 8 }, | |
1912 | { "proxydma_info", __spufs_proxydma_info_read, NULL, 35 * 8 }, | |
1913 | { "object-id", NULL, __spufs_object_id_get, 19 }, | |
1914 | { }, | |
1915 | }; | |
1916 | int spufs_coredump_num_notes = ARRAY_SIZE(spufs_coredump_read) - 1; | |
1917 |