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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> |
cbe709c1 | 31 | #include <linux/seq_file.h> |
67207b96 AB |
32 | |
33 | #include <asm/io.h> | |
34 | #include <asm/semaphore.h> | |
35 | #include <asm/spu.h> | |
b9e3bd77 | 36 | #include <asm/spu_info.h> |
67207b96 AB |
37 | #include <asm/uaccess.h> |
38 | ||
39 | #include "spufs.h" | |
40 | ||
27d5bf2a BH |
41 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
42 | ||
cbe709c1 | 43 | |
67207b96 AB |
44 | static int |
45 | spufs_mem_open(struct inode *inode, struct file *file) | |
46 | { | |
47 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 48 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 49 | |
47d3a5fa | 50 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 51 | file->private_data = ctx; |
43c2bbd9 CH |
52 | if (!i->i_openers++) |
53 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 54 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
55 | return 0; |
56 | } | |
57 | ||
58 | static int | |
59 | spufs_mem_release(struct inode *inode, struct file *file) | |
60 | { | |
61 | struct spufs_inode_info *i = SPUFS_I(inode); | |
62 | struct spu_context *ctx = i->i_ctx; | |
63 | ||
47d3a5fa | 64 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
65 | if (!--i->i_openers) |
66 | ctx->local_store = NULL; | |
47d3a5fa | 67 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
68 | return 0; |
69 | } | |
70 | ||
bf1ab978 DGM |
71 | static ssize_t |
72 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
73 | size_t size, loff_t *pos) | |
74 | { | |
75 | char *local_store = ctx->ops->get_ls(ctx); | |
76 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
77 | LS_SIZE); | |
78 | } | |
79 | ||
67207b96 AB |
80 | static ssize_t |
81 | spufs_mem_read(struct file *file, char __user *buffer, | |
82 | size_t size, loff_t *pos) | |
83 | { | |
bf1ab978 | 84 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 85 | ssize_t ret; |
67207b96 | 86 | |
8b3d6663 | 87 | spu_acquire(ctx); |
bf1ab978 | 88 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 89 | spu_release(ctx); |
67207b96 AB |
90 | return ret; |
91 | } | |
92 | ||
93 | static ssize_t | |
94 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 95 | size_t size, loff_t *ppos) |
67207b96 AB |
96 | { |
97 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 98 | char *local_store; |
aa0ed2bd | 99 | loff_t pos = *ppos; |
8b3d6663 | 100 | int ret; |
67207b96 | 101 | |
aa0ed2bd AB |
102 | if (pos < 0) |
103 | return -EINVAL; | |
104 | if (pos > LS_SIZE) | |
67207b96 | 105 | return -EFBIG; |
aa0ed2bd AB |
106 | if (size > LS_SIZE - pos) |
107 | size = LS_SIZE - pos; | |
8b3d6663 AB |
108 | |
109 | spu_acquire(ctx); | |
8b3d6663 | 110 | local_store = ctx->ops->get_ls(ctx); |
aa0ed2bd | 111 | ret = copy_from_user(local_store + pos, buffer, size); |
8b3d6663 | 112 | spu_release(ctx); |
aa0ed2bd AB |
113 | |
114 | if (ret) | |
115 | return -EFAULT; | |
116 | *ppos = pos + size; | |
117 | return size; | |
67207b96 AB |
118 | } |
119 | ||
78bde53e BH |
120 | static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma, |
121 | unsigned long address) | |
8b3d6663 | 122 | { |
f1fa74f4 BH |
123 | struct spu_context *ctx = vma->vm_file->private_data; |
124 | unsigned long pfn, offset, addr0 = address; | |
125 | #ifdef CONFIG_SPU_FS_64K_LS | |
126 | struct spu_state *csa = &ctx->csa; | |
127 | int psize; | |
128 | ||
129 | /* Check what page size we are using */ | |
130 | psize = get_slice_psize(vma->vm_mm, address); | |
131 | ||
132 | /* Some sanity checking */ | |
133 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); | |
134 | ||
135 | /* Wow, 64K, cool, we need to align the address though */ | |
136 | if (csa->use_big_pages) { | |
137 | BUG_ON(vma->vm_start & 0xffff); | |
138 | address &= ~0xfffful; | |
139 | } | |
140 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
8b3d6663 | 141 | |
f1fa74f4 | 142 | offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT); |
128b8546 MN |
143 | if (offset >= LS_SIZE) |
144 | return NOPFN_SIGBUS; | |
145 | ||
f1fa74f4 BH |
146 | pr_debug("spufs_mem_mmap_nopfn address=0x%lx -> 0x%lx, offset=0x%lx\n", |
147 | addr0, address, offset); | |
148 | ||
8b3d6663 AB |
149 | spu_acquire(ctx); |
150 | ||
ac91cb8d AB |
151 | if (ctx->state == SPU_STATE_SAVED) { |
152 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
932f535d | 153 | & ~_PAGE_NO_CACHE); |
78bde53e | 154 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d AB |
155 | } else { |
156 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
78bde53e BH |
157 | | _PAGE_NO_CACHE); |
158 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; | |
ac91cb8d | 159 | } |
78bde53e | 160 | vm_insert_pfn(vma, address, pfn); |
8b3d6663 | 161 | |
78bde53e | 162 | spu_release(ctx); |
8b3d6663 | 163 | |
78bde53e | 164 | return NOPFN_REFAULT; |
8b3d6663 AB |
165 | } |
166 | ||
78bde53e | 167 | |
8b3d6663 | 168 | static struct vm_operations_struct spufs_mem_mmap_vmops = { |
78bde53e | 169 | .nopfn = spufs_mem_mmap_nopfn, |
8b3d6663 AB |
170 | }; |
171 | ||
f1fa74f4 | 172 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 173 | { |
f1fa74f4 BH |
174 | #ifdef CONFIG_SPU_FS_64K_LS |
175 | struct spu_context *ctx = file->private_data; | |
176 | struct spu_state *csa = &ctx->csa; | |
177 | ||
178 | /* Sanity check VMA alignment */ | |
179 | if (csa->use_big_pages) { | |
180 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," | |
181 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, | |
182 | vma->vm_pgoff); | |
183 | if (vma->vm_start & 0xffff) | |
184 | return -EINVAL; | |
185 | if (vma->vm_pgoff & 0xf) | |
186 | return -EINVAL; | |
187 | } | |
188 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
189 | ||
8b3d6663 AB |
190 | if (!(vma->vm_flags & VM_SHARED)) |
191 | return -EINVAL; | |
67207b96 | 192 | |
78bde53e | 193 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
8b3d6663 AB |
194 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
195 | | _PAGE_NO_CACHE); | |
196 | ||
197 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
198 | return 0; |
199 | } | |
200 | ||
f1fa74f4 | 201 | #ifdef CONFIG_SPU_FS_64K_LS |
1238819a SS |
202 | static unsigned long spufs_get_unmapped_area(struct file *file, |
203 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
204 | unsigned long flags) | |
f1fa74f4 BH |
205 | { |
206 | struct spu_context *ctx = file->private_data; | |
207 | struct spu_state *csa = &ctx->csa; | |
208 | ||
209 | /* If not using big pages, fallback to normal MM g_u_a */ | |
210 | if (!csa->use_big_pages) | |
211 | return current->mm->get_unmapped_area(file, addr, len, | |
212 | pgoff, flags); | |
213 | ||
214 | /* Else, try to obtain a 64K pages slice */ | |
215 | return slice_get_unmapped_area(addr, len, flags, | |
216 | MMU_PAGE_64K, 1, 0); | |
217 | } | |
218 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
219 | ||
5dfe4c96 | 220 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
221 | .open = spufs_mem_open, |
222 | .release = spufs_mem_release, | |
223 | .read = spufs_mem_read, | |
224 | .write = spufs_mem_write, | |
225 | .llseek = generic_file_llseek, | |
226 | .mmap = spufs_mem_mmap, | |
f1fa74f4 BH |
227 | #ifdef CONFIG_SPU_FS_64K_LS |
228 | .get_unmapped_area = spufs_get_unmapped_area, | |
229 | #endif | |
8b3d6663 AB |
230 | }; |
231 | ||
78bde53e | 232 | static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma, |
6df10a82 | 233 | unsigned long address, |
78bde53e | 234 | unsigned long ps_offs, |
27d5bf2a | 235 | unsigned long ps_size) |
6df10a82 | 236 | { |
6df10a82 | 237 | struct spu_context *ctx = vma->vm_file->private_data; |
78bde53e | 238 | unsigned long area, offset = address - vma->vm_start; |
6df10a82 MN |
239 | |
240 | offset += vma->vm_pgoff << PAGE_SHIFT; | |
27d5bf2a | 241 | if (offset >= ps_size) |
78bde53e | 242 | return NOPFN_SIGBUS; |
6df10a82 | 243 | |
33bfd7a7 AB |
244 | /* |
245 | * We have to wait for context to be loaded before we have | |
246 | * pages to hand out to the user, but we don't want to wait | |
247 | * with the mmap_sem held. | |
248 | * It is possible to drop the mmap_sem here, but then we need | |
249 | * to return NOPFN_REFAULT because the mappings may have | |
250 | * hanged. | |
78bde53e | 251 | */ |
33bfd7a7 AB |
252 | spu_acquire(ctx); |
253 | if (ctx->state == SPU_STATE_SAVED) { | |
254 | up_read(¤t->mm->mmap_sem); | |
255 | spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); | |
256 | down_read(¤t->mm->mmap_sem); | |
257 | goto out; | |
258 | } | |
6df10a82 MN |
259 | |
260 | area = ctx->spu->problem_phys + ps_offs; | |
78bde53e | 261 | vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT); |
33bfd7a7 AB |
262 | |
263 | out: | |
6df10a82 MN |
264 | spu_release(ctx); |
265 | ||
78bde53e | 266 | return NOPFN_REFAULT; |
6df10a82 MN |
267 | } |
268 | ||
27d5bf2a | 269 | #if SPUFS_MMAP_4K |
78bde53e BH |
270 | static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma, |
271 | unsigned long address) | |
6df10a82 | 272 | { |
78bde53e | 273 | return spufs_ps_nopfn(vma, address, 0x4000, 0x1000); |
6df10a82 MN |
274 | } |
275 | ||
276 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { | |
78bde53e | 277 | .nopfn = spufs_cntl_mmap_nopfn, |
6df10a82 MN |
278 | }; |
279 | ||
280 | /* | |
281 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
282 | */ |
283 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
284 | { | |
285 | if (!(vma->vm_flags & VM_SHARED)) | |
286 | return -EINVAL; | |
287 | ||
78bde53e | 288 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 289 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 290 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
291 | |
292 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
293 | return 0; | |
294 | } | |
27d5bf2a BH |
295 | #else /* SPUFS_MMAP_4K */ |
296 | #define spufs_cntl_mmap NULL | |
297 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 298 | |
e1dbff2b | 299 | static u64 spufs_cntl_get(void *data) |
6df10a82 | 300 | { |
e1dbff2b AB |
301 | struct spu_context *ctx = data; |
302 | u64 val; | |
6df10a82 | 303 | |
e1dbff2b AB |
304 | spu_acquire(ctx); |
305 | val = ctx->ops->status_read(ctx); | |
306 | spu_release(ctx); | |
307 | ||
308 | return val; | |
6df10a82 MN |
309 | } |
310 | ||
e1dbff2b | 311 | static void spufs_cntl_set(void *data, u64 val) |
6df10a82 | 312 | { |
e1dbff2b AB |
313 | struct spu_context *ctx = data; |
314 | ||
315 | spu_acquire(ctx); | |
316 | ctx->ops->runcntl_write(ctx, val); | |
317 | spu_release(ctx); | |
6df10a82 MN |
318 | } |
319 | ||
e1dbff2b | 320 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 321 | { |
e1dbff2b AB |
322 | struct spufs_inode_info *i = SPUFS_I(inode); |
323 | struct spu_context *ctx = i->i_ctx; | |
324 | ||
47d3a5fa | 325 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 326 | file->private_data = ctx; |
43c2bbd9 CH |
327 | if (!i->i_openers++) |
328 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 329 | mutex_unlock(&ctx->mapping_lock); |
e1dbff2b AB |
330 | return simple_attr_open(inode, file, spufs_cntl_get, |
331 | spufs_cntl_set, "0x%08lx"); | |
6df10a82 MN |
332 | } |
333 | ||
43c2bbd9 CH |
334 | static int |
335 | spufs_cntl_release(struct inode *inode, struct file *file) | |
336 | { | |
337 | struct spufs_inode_info *i = SPUFS_I(inode); | |
338 | struct spu_context *ctx = i->i_ctx; | |
339 | ||
340 | simple_attr_close(inode, file); | |
341 | ||
47d3a5fa | 342 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
343 | if (!--i->i_openers) |
344 | ctx->cntl = NULL; | |
47d3a5fa | 345 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
346 | return 0; |
347 | } | |
348 | ||
5dfe4c96 | 349 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 350 | .open = spufs_cntl_open, |
43c2bbd9 | 351 | .release = spufs_cntl_release, |
e1dbff2b AB |
352 | .read = simple_attr_read, |
353 | .write = simple_attr_write, | |
6df10a82 | 354 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
355 | }; |
356 | ||
8b3d6663 AB |
357 | static int |
358 | spufs_regs_open(struct inode *inode, struct file *file) | |
359 | { | |
360 | struct spufs_inode_info *i = SPUFS_I(inode); | |
361 | file->private_data = i->i_ctx; | |
362 | return 0; | |
363 | } | |
364 | ||
bf1ab978 DGM |
365 | static ssize_t |
366 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
367 | size_t size, loff_t *pos) | |
368 | { | |
369 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
370 | return simple_read_from_buffer(buffer, size, pos, | |
371 | lscsa->gprs, sizeof lscsa->gprs); | |
372 | } | |
373 | ||
8b3d6663 AB |
374 | static ssize_t |
375 | spufs_regs_read(struct file *file, char __user *buffer, | |
376 | size_t size, loff_t *pos) | |
377 | { | |
8b3d6663 | 378 | int ret; |
bf1ab978 | 379 | struct spu_context *ctx = file->private_data; |
8b3d6663 AB |
380 | |
381 | spu_acquire_saved(ctx); | |
bf1ab978 | 382 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 383 | spu_release_saved(ctx); |
8b3d6663 AB |
384 | return ret; |
385 | } | |
386 | ||
387 | static ssize_t | |
388 | spufs_regs_write(struct file *file, const char __user *buffer, | |
389 | size_t size, loff_t *pos) | |
390 | { | |
391 | struct spu_context *ctx = file->private_data; | |
392 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
393 | int ret; | |
394 | ||
395 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); | |
396 | if (size <= 0) | |
397 | return -EFBIG; | |
398 | *pos += size; | |
399 | ||
400 | spu_acquire_saved(ctx); | |
401 | ||
402 | ret = copy_from_user(lscsa->gprs + *pos - size, | |
403 | buffer, size) ? -EFAULT : size; | |
404 | ||
27b1ea09 | 405 | spu_release_saved(ctx); |
8b3d6663 AB |
406 | return ret; |
407 | } | |
408 | ||
5dfe4c96 | 409 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
410 | .open = spufs_regs_open, |
411 | .read = spufs_regs_read, | |
412 | .write = spufs_regs_write, | |
67207b96 AB |
413 | .llseek = generic_file_llseek, |
414 | }; | |
415 | ||
bf1ab978 DGM |
416 | static ssize_t |
417 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
418 | size_t size, loff_t * pos) | |
419 | { | |
420 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
421 | return simple_read_from_buffer(buffer, size, pos, | |
422 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
423 | } | |
424 | ||
8b3d6663 AB |
425 | static ssize_t |
426 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
427 | size_t size, loff_t * pos) | |
428 | { | |
8b3d6663 | 429 | int ret; |
bf1ab978 | 430 | struct spu_context *ctx = file->private_data; |
8b3d6663 AB |
431 | |
432 | spu_acquire_saved(ctx); | |
bf1ab978 | 433 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 434 | spu_release_saved(ctx); |
8b3d6663 AB |
435 | return ret; |
436 | } | |
437 | ||
438 | static ssize_t | |
439 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
440 | size_t size, loff_t * pos) | |
441 | { | |
442 | struct spu_context *ctx = file->private_data; | |
443 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
444 | int ret; | |
445 | ||
446 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); | |
447 | if (size <= 0) | |
448 | return -EFBIG; | |
449 | *pos += size; | |
450 | ||
451 | spu_acquire_saved(ctx); | |
452 | ||
453 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, | |
454 | buffer, size) ? -EFAULT : size; | |
455 | ||
27b1ea09 | 456 | spu_release_saved(ctx); |
8b3d6663 AB |
457 | return ret; |
458 | } | |
459 | ||
5dfe4c96 | 460 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
461 | .open = spufs_regs_open, |
462 | .read = spufs_fpcr_read, | |
463 | .write = spufs_fpcr_write, | |
464 | .llseek = generic_file_llseek, | |
465 | }; | |
466 | ||
67207b96 AB |
467 | /* generic open function for all pipe-like files */ |
468 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
469 | { | |
470 | struct spufs_inode_info *i = SPUFS_I(inode); | |
471 | file->private_data = i->i_ctx; | |
472 | ||
473 | return nonseekable_open(inode, file); | |
474 | } | |
475 | ||
cdcc89bb AB |
476 | /* |
477 | * Read as many bytes from the mailbox as possible, until | |
478 | * one of the conditions becomes true: | |
479 | * | |
480 | * - no more data available in the mailbox | |
481 | * - end of the user provided buffer | |
482 | * - end of the mapped area | |
483 | */ | |
67207b96 AB |
484 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
485 | size_t len, loff_t *pos) | |
486 | { | |
8b3d6663 | 487 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
488 | u32 mbox_data, __user *udata; |
489 | ssize_t count; | |
67207b96 AB |
490 | |
491 | if (len < 4) | |
492 | return -EINVAL; | |
493 | ||
cdcc89bb AB |
494 | if (!access_ok(VERIFY_WRITE, buf, len)) |
495 | return -EFAULT; | |
496 | ||
497 | udata = (void __user *)buf; | |
498 | ||
8b3d6663 | 499 | spu_acquire(ctx); |
274cef5e | 500 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
501 | int ret; |
502 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
503 | if (ret == 0) | |
504 | break; | |
505 | ||
506 | /* | |
507 | * at the end of the mapped area, we can fault | |
508 | * but still need to return the data we have | |
509 | * read successfully so far. | |
510 | */ | |
511 | ret = __put_user(mbox_data, udata); | |
512 | if (ret) { | |
513 | if (!count) | |
514 | count = -EFAULT; | |
515 | break; | |
516 | } | |
517 | } | |
8b3d6663 | 518 | spu_release(ctx); |
67207b96 | 519 | |
cdcc89bb AB |
520 | if (!count) |
521 | count = -EAGAIN; | |
67207b96 | 522 | |
cdcc89bb | 523 | return count; |
67207b96 AB |
524 | } |
525 | ||
5dfe4c96 | 526 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
527 | .open = spufs_pipe_open, |
528 | .read = spufs_mbox_read, | |
529 | }; | |
530 | ||
531 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
532 | size_t len, loff_t *pos) | |
533 | { | |
8b3d6663 | 534 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
535 | u32 mbox_stat; |
536 | ||
537 | if (len < 4) | |
538 | return -EINVAL; | |
539 | ||
8b3d6663 AB |
540 | spu_acquire(ctx); |
541 | ||
542 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
543 | ||
544 | spu_release(ctx); | |
67207b96 AB |
545 | |
546 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
547 | return -EFAULT; | |
548 | ||
549 | return 4; | |
550 | } | |
551 | ||
5dfe4c96 | 552 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
553 | .open = spufs_pipe_open, |
554 | .read = spufs_mbox_stat_read, | |
555 | }; | |
556 | ||
557 | /* low-level ibox access function */ | |
8b3d6663 | 558 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 559 | { |
8b3d6663 AB |
560 | return ctx->ops->ibox_read(ctx, data); |
561 | } | |
67207b96 | 562 | |
8b3d6663 AB |
563 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
564 | { | |
565 | struct spu_context *ctx = file->private_data; | |
67207b96 | 566 | |
8b3d6663 | 567 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 568 | } |
67207b96 | 569 | |
8b3d6663 AB |
570 | /* interrupt-level ibox callback function. */ |
571 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 572 | { |
8b3d6663 AB |
573 | struct spu_context *ctx = spu->ctx; |
574 | ||
575 | wake_up_all(&ctx->ibox_wq); | |
576 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
577 | } |
578 | ||
cdcc89bb AB |
579 | /* |
580 | * Read as many bytes from the interrupt mailbox as possible, until | |
581 | * one of the conditions becomes true: | |
582 | * | |
583 | * - no more data available in the mailbox | |
584 | * - end of the user provided buffer | |
585 | * - end of the mapped area | |
586 | * | |
587 | * If the file is opened without O_NONBLOCK, we wait here until | |
588 | * any data is available, but return when we have been able to | |
589 | * read something. | |
590 | */ | |
67207b96 AB |
591 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
592 | size_t len, loff_t *pos) | |
593 | { | |
8b3d6663 | 594 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
595 | u32 ibox_data, __user *udata; |
596 | ssize_t count; | |
67207b96 AB |
597 | |
598 | if (len < 4) | |
599 | return -EINVAL; | |
600 | ||
cdcc89bb AB |
601 | if (!access_ok(VERIFY_WRITE, buf, len)) |
602 | return -EFAULT; | |
603 | ||
604 | udata = (void __user *)buf; | |
605 | ||
8b3d6663 | 606 | spu_acquire(ctx); |
67207b96 | 607 | |
cdcc89bb AB |
608 | /* wait only for the first element */ |
609 | count = 0; | |
67207b96 | 610 | if (file->f_flags & O_NONBLOCK) { |
8b3d6663 | 611 | if (!spu_ibox_read(ctx, &ibox_data)) |
cdcc89bb | 612 | count = -EAGAIN; |
67207b96 | 613 | } else { |
cdcc89bb | 614 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
67207b96 | 615 | } |
cdcc89bb AB |
616 | if (count) |
617 | goto out; | |
67207b96 | 618 | |
cdcc89bb AB |
619 | /* if we can't write at all, return -EFAULT */ |
620 | count = __put_user(ibox_data, udata); | |
621 | if (count) | |
622 | goto out; | |
8b3d6663 | 623 | |
cdcc89bb AB |
624 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
625 | int ret; | |
626 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
627 | if (ret == 0) | |
628 | break; | |
629 | /* | |
630 | * at the end of the mapped area, we can fault | |
631 | * but still need to return the data we have | |
632 | * read successfully so far. | |
633 | */ | |
634 | ret = __put_user(ibox_data, udata); | |
635 | if (ret) | |
636 | break; | |
637 | } | |
67207b96 | 638 | |
cdcc89bb AB |
639 | out: |
640 | spu_release(ctx); | |
67207b96 | 641 | |
cdcc89bb | 642 | return count; |
67207b96 AB |
643 | } |
644 | ||
645 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
646 | { | |
8b3d6663 | 647 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
648 | unsigned int mask; |
649 | ||
8b3d6663 | 650 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 651 | |
3a843d7c AB |
652 | spu_acquire(ctx); |
653 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); | |
654 | spu_release(ctx); | |
67207b96 AB |
655 | |
656 | return mask; | |
657 | } | |
658 | ||
5dfe4c96 | 659 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
660 | .open = spufs_pipe_open, |
661 | .read = spufs_ibox_read, | |
662 | .poll = spufs_ibox_poll, | |
663 | .fasync = spufs_ibox_fasync, | |
664 | }; | |
665 | ||
666 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
667 | size_t len, loff_t *pos) | |
668 | { | |
8b3d6663 | 669 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
670 | u32 ibox_stat; |
671 | ||
672 | if (len < 4) | |
673 | return -EINVAL; | |
674 | ||
8b3d6663 AB |
675 | spu_acquire(ctx); |
676 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; | |
677 | spu_release(ctx); | |
67207b96 AB |
678 | |
679 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
680 | return -EFAULT; | |
681 | ||
682 | return 4; | |
683 | } | |
684 | ||
5dfe4c96 | 685 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
686 | .open = spufs_pipe_open, |
687 | .read = spufs_ibox_stat_read, | |
688 | }; | |
689 | ||
690 | /* low-level mailbox write */ | |
8b3d6663 | 691 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 692 | { |
8b3d6663 AB |
693 | return ctx->ops->wbox_write(ctx, data); |
694 | } | |
67207b96 | 695 | |
8b3d6663 AB |
696 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
697 | { | |
698 | struct spu_context *ctx = file->private_data; | |
699 | int ret; | |
67207b96 | 700 | |
8b3d6663 | 701 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 702 | |
67207b96 AB |
703 | return ret; |
704 | } | |
67207b96 | 705 | |
8b3d6663 AB |
706 | /* interrupt-level wbox callback function. */ |
707 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 708 | { |
8b3d6663 AB |
709 | struct spu_context *ctx = spu->ctx; |
710 | ||
711 | wake_up_all(&ctx->wbox_wq); | |
712 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
713 | } |
714 | ||
cdcc89bb AB |
715 | /* |
716 | * Write as many bytes to the interrupt mailbox as possible, until | |
717 | * one of the conditions becomes true: | |
718 | * | |
719 | * - the mailbox is full | |
720 | * - end of the user provided buffer | |
721 | * - end of the mapped area | |
722 | * | |
723 | * If the file is opened without O_NONBLOCK, we wait here until | |
724 | * space is availabyl, but return when we have been able to | |
725 | * write something. | |
726 | */ | |
67207b96 AB |
727 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
728 | size_t len, loff_t *pos) | |
729 | { | |
8b3d6663 | 730 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
731 | u32 wbox_data, __user *udata; |
732 | ssize_t count; | |
67207b96 AB |
733 | |
734 | if (len < 4) | |
735 | return -EINVAL; | |
736 | ||
cdcc89bb AB |
737 | udata = (void __user *)buf; |
738 | if (!access_ok(VERIFY_READ, buf, len)) | |
739 | return -EFAULT; | |
740 | ||
741 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
742 | return -EFAULT; |
743 | ||
8b3d6663 AB |
744 | spu_acquire(ctx); |
745 | ||
cdcc89bb AB |
746 | /* |
747 | * make sure we can at least write one element, by waiting | |
748 | * in case of !O_NONBLOCK | |
749 | */ | |
750 | count = 0; | |
67207b96 | 751 | if (file->f_flags & O_NONBLOCK) { |
8b3d6663 | 752 | if (!spu_wbox_write(ctx, wbox_data)) |
cdcc89bb | 753 | count = -EAGAIN; |
67207b96 | 754 | } else { |
cdcc89bb | 755 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
67207b96 AB |
756 | } |
757 | ||
cdcc89bb AB |
758 | if (count) |
759 | goto out; | |
8b3d6663 | 760 | |
96de0e25 | 761 | /* write as much as possible */ |
cdcc89bb AB |
762 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
763 | int ret; | |
764 | ret = __get_user(wbox_data, udata); | |
765 | if (ret) | |
766 | break; | |
767 | ||
768 | ret = spu_wbox_write(ctx, wbox_data); | |
769 | if (ret == 0) | |
770 | break; | |
771 | } | |
772 | ||
773 | out: | |
774 | spu_release(ctx); | |
775 | return count; | |
67207b96 AB |
776 | } |
777 | ||
778 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
779 | { | |
8b3d6663 | 780 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
781 | unsigned int mask; |
782 | ||
8b3d6663 | 783 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 784 | |
3a843d7c AB |
785 | spu_acquire(ctx); |
786 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); | |
787 | spu_release(ctx); | |
67207b96 AB |
788 | |
789 | return mask; | |
790 | } | |
791 | ||
5dfe4c96 | 792 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
793 | .open = spufs_pipe_open, |
794 | .write = spufs_wbox_write, | |
795 | .poll = spufs_wbox_poll, | |
796 | .fasync = spufs_wbox_fasync, | |
797 | }; | |
798 | ||
799 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
800 | size_t len, loff_t *pos) | |
801 | { | |
8b3d6663 | 802 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
803 | u32 wbox_stat; |
804 | ||
805 | if (len < 4) | |
806 | return -EINVAL; | |
807 | ||
8b3d6663 AB |
808 | spu_acquire(ctx); |
809 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; | |
810 | spu_release(ctx); | |
67207b96 AB |
811 | |
812 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
813 | return -EFAULT; | |
814 | ||
815 | return 4; | |
816 | } | |
817 | ||
5dfe4c96 | 818 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
819 | .open = spufs_pipe_open, |
820 | .read = spufs_wbox_stat_read, | |
821 | }; | |
822 | ||
6df10a82 MN |
823 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
824 | { | |
825 | struct spufs_inode_info *i = SPUFS_I(inode); | |
826 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 827 | |
47d3a5fa | 828 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 829 | file->private_data = ctx; |
43c2bbd9 CH |
830 | if (!i->i_openers++) |
831 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 832 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
833 | return nonseekable_open(inode, file); |
834 | } | |
835 | ||
43c2bbd9 CH |
836 | static int |
837 | spufs_signal1_release(struct inode *inode, struct file *file) | |
838 | { | |
839 | struct spufs_inode_info *i = SPUFS_I(inode); | |
840 | struct spu_context *ctx = i->i_ctx; | |
841 | ||
47d3a5fa | 842 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
843 | if (!--i->i_openers) |
844 | ctx->signal1 = NULL; | |
47d3a5fa | 845 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
846 | return 0; |
847 | } | |
848 | ||
bf1ab978 | 849 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
850 | size_t len, loff_t *pos) |
851 | { | |
17f88ceb | 852 | int ret = 0; |
67207b96 AB |
853 | u32 data; |
854 | ||
67207b96 AB |
855 | if (len < 4) |
856 | return -EINVAL; | |
857 | ||
17f88ceb DGM |
858 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
859 | data = ctx->csa.spu_chnldata_RW[3]; | |
860 | ret = 4; | |
861 | } | |
8b3d6663 | 862 | |
17f88ceb DGM |
863 | if (!ret) |
864 | goto out; | |
865 | ||
67207b96 AB |
866 | if (copy_to_user(buf, &data, 4)) |
867 | return -EFAULT; | |
868 | ||
17f88ceb DGM |
869 | out: |
870 | return ret; | |
67207b96 AB |
871 | } |
872 | ||
bf1ab978 DGM |
873 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
874 | size_t len, loff_t *pos) | |
875 | { | |
876 | int ret; | |
877 | struct spu_context *ctx = file->private_data; | |
878 | ||
879 | spu_acquire_saved(ctx); | |
880 | ret = __spufs_signal1_read(ctx, buf, len, pos); | |
27b1ea09 | 881 | spu_release_saved(ctx); |
bf1ab978 DGM |
882 | |
883 | return ret; | |
884 | } | |
885 | ||
67207b96 AB |
886 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
887 | size_t len, loff_t *pos) | |
888 | { | |
889 | struct spu_context *ctx; | |
67207b96 AB |
890 | u32 data; |
891 | ||
892 | ctx = file->private_data; | |
67207b96 AB |
893 | |
894 | if (len < 4) | |
895 | return -EINVAL; | |
896 | ||
897 | if (copy_from_user(&data, buf, 4)) | |
898 | return -EFAULT; | |
899 | ||
8b3d6663 AB |
900 | spu_acquire(ctx); |
901 | ctx->ops->signal1_write(ctx, data); | |
902 | spu_release(ctx); | |
67207b96 AB |
903 | |
904 | return 4; | |
905 | } | |
906 | ||
78bde53e BH |
907 | static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma, |
908 | unsigned long address) | |
6df10a82 | 909 | { |
27d5bf2a | 910 | #if PAGE_SIZE == 0x1000 |
78bde53e | 911 | return spufs_ps_nopfn(vma, address, 0x14000, 0x1000); |
27d5bf2a BH |
912 | #elif PAGE_SIZE == 0x10000 |
913 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
914 | * signal 1 and 2 area | |
915 | */ | |
78bde53e | 916 | return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); |
27d5bf2a BH |
917 | #else |
918 | #error unsupported page size | |
919 | #endif | |
6df10a82 MN |
920 | } |
921 | ||
922 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { | |
78bde53e | 923 | .nopfn = spufs_signal1_mmap_nopfn, |
6df10a82 MN |
924 | }; |
925 | ||
926 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
927 | { | |
928 | if (!(vma->vm_flags & VM_SHARED)) | |
929 | return -EINVAL; | |
930 | ||
78bde53e | 931 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 932 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 933 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
934 | |
935 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
936 | return 0; | |
937 | } | |
6df10a82 | 938 | |
5dfe4c96 | 939 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 940 | .open = spufs_signal1_open, |
43c2bbd9 | 941 | .release = spufs_signal1_release, |
67207b96 AB |
942 | .read = spufs_signal1_read, |
943 | .write = spufs_signal1_write, | |
6df10a82 | 944 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
945 | }; |
946 | ||
d054b36f JK |
947 | static const struct file_operations spufs_signal1_nosched_fops = { |
948 | .open = spufs_signal1_open, | |
949 | .release = spufs_signal1_release, | |
950 | .write = spufs_signal1_write, | |
951 | .mmap = spufs_signal1_mmap, | |
952 | }; | |
953 | ||
6df10a82 MN |
954 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
955 | { | |
956 | struct spufs_inode_info *i = SPUFS_I(inode); | |
957 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 958 | |
47d3a5fa | 959 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 960 | file->private_data = ctx; |
43c2bbd9 CH |
961 | if (!i->i_openers++) |
962 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 963 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
964 | return nonseekable_open(inode, file); |
965 | } | |
966 | ||
43c2bbd9 CH |
967 | static int |
968 | spufs_signal2_release(struct inode *inode, struct file *file) | |
969 | { | |
970 | struct spufs_inode_info *i = SPUFS_I(inode); | |
971 | struct spu_context *ctx = i->i_ctx; | |
972 | ||
47d3a5fa | 973 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
974 | if (!--i->i_openers) |
975 | ctx->signal2 = NULL; | |
47d3a5fa | 976 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
977 | return 0; |
978 | } | |
979 | ||
bf1ab978 | 980 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
981 | size_t len, loff_t *pos) |
982 | { | |
17f88ceb | 983 | int ret = 0; |
67207b96 AB |
984 | u32 data; |
985 | ||
67207b96 AB |
986 | if (len < 4) |
987 | return -EINVAL; | |
988 | ||
17f88ceb DGM |
989 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
990 | data = ctx->csa.spu_chnldata_RW[4]; | |
991 | ret = 4; | |
992 | } | |
8b3d6663 | 993 | |
17f88ceb DGM |
994 | if (!ret) |
995 | goto out; | |
996 | ||
67207b96 AB |
997 | if (copy_to_user(buf, &data, 4)) |
998 | return -EFAULT; | |
999 | ||
17f88ceb | 1000 | out: |
bf1ab978 DGM |
1001 | return ret; |
1002 | } | |
1003 | ||
1004 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1005 | size_t len, loff_t *pos) | |
1006 | { | |
1007 | struct spu_context *ctx = file->private_data; | |
1008 | int ret; | |
1009 | ||
1010 | spu_acquire_saved(ctx); | |
1011 | ret = __spufs_signal2_read(ctx, buf, len, pos); | |
27b1ea09 | 1012 | spu_release_saved(ctx); |
bf1ab978 DGM |
1013 | |
1014 | return ret; | |
67207b96 AB |
1015 | } |
1016 | ||
1017 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1018 | size_t len, loff_t *pos) | |
1019 | { | |
1020 | struct spu_context *ctx; | |
67207b96 AB |
1021 | u32 data; |
1022 | ||
1023 | ctx = file->private_data; | |
67207b96 AB |
1024 | |
1025 | if (len < 4) | |
1026 | return -EINVAL; | |
1027 | ||
1028 | if (copy_from_user(&data, buf, 4)) | |
1029 | return -EFAULT; | |
1030 | ||
8b3d6663 AB |
1031 | spu_acquire(ctx); |
1032 | ctx->ops->signal2_write(ctx, data); | |
1033 | spu_release(ctx); | |
67207b96 AB |
1034 | |
1035 | return 4; | |
1036 | } | |
1037 | ||
27d5bf2a | 1038 | #if SPUFS_MMAP_4K |
78bde53e BH |
1039 | static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma, |
1040 | unsigned long address) | |
6df10a82 | 1041 | { |
27d5bf2a | 1042 | #if PAGE_SIZE == 0x1000 |
78bde53e | 1043 | return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000); |
27d5bf2a BH |
1044 | #elif PAGE_SIZE == 0x10000 |
1045 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
1046 | * signal 1 and 2 area | |
1047 | */ | |
78bde53e | 1048 | return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); |
27d5bf2a BH |
1049 | #else |
1050 | #error unsupported page size | |
1051 | #endif | |
6df10a82 MN |
1052 | } |
1053 | ||
1054 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { | |
78bde53e | 1055 | .nopfn = spufs_signal2_mmap_nopfn, |
6df10a82 MN |
1056 | }; |
1057 | ||
1058 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1059 | { | |
1060 | if (!(vma->vm_flags & VM_SHARED)) | |
1061 | return -EINVAL; | |
1062 | ||
78bde53e | 1063 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1064 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1065 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1066 | |
1067 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1068 | return 0; | |
1069 | } | |
27d5bf2a BH |
1070 | #else /* SPUFS_MMAP_4K */ |
1071 | #define spufs_signal2_mmap NULL | |
1072 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1073 | |
5dfe4c96 | 1074 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1075 | .open = spufs_signal2_open, |
43c2bbd9 | 1076 | .release = spufs_signal2_release, |
67207b96 AB |
1077 | .read = spufs_signal2_read, |
1078 | .write = spufs_signal2_write, | |
6df10a82 | 1079 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
1080 | }; |
1081 | ||
d054b36f JK |
1082 | static const struct file_operations spufs_signal2_nosched_fops = { |
1083 | .open = spufs_signal2_open, | |
1084 | .release = spufs_signal2_release, | |
1085 | .write = spufs_signal2_write, | |
1086 | .mmap = spufs_signal2_mmap, | |
1087 | }; | |
1088 | ||
104f0cc2 ME |
1089 | /* |
1090 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1091 | * work of acquiring (or not) the SPU context before calling through | |
1092 | * to the actual get routine. The set routine is called directly. | |
1093 | */ | |
1094 | #define SPU_ATTR_NOACQUIRE 0 | |
1095 | #define SPU_ATTR_ACQUIRE 1 | |
1096 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1097 | ||
1098 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
1099 | static u64 __##__get(void *data) \ | |
1100 | { \ | |
1101 | struct spu_context *ctx = data; \ | |
1102 | u64 ret; \ | |
1103 | \ | |
1104 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
1105 | spu_acquire(ctx); \ | |
1106 | ret = __get(ctx); \ | |
1107 | spu_release(ctx); \ | |
1108 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
1109 | spu_acquire_saved(ctx); \ | |
1110 | ret = __get(ctx); \ | |
1111 | spu_release_saved(ctx); \ | |
1112 | } else \ | |
1113 | ret = __get(ctx); \ | |
1114 | \ | |
1115 | return ret; \ | |
1116 | } \ | |
1117 | DEFINE_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); | |
1118 | ||
67207b96 AB |
1119 | static void spufs_signal1_type_set(void *data, u64 val) |
1120 | { | |
1121 | struct spu_context *ctx = data; | |
67207b96 | 1122 | |
8b3d6663 AB |
1123 | spu_acquire(ctx); |
1124 | ctx->ops->signal1_type_set(ctx, val); | |
1125 | spu_release(ctx); | |
67207b96 AB |
1126 | } |
1127 | ||
104f0cc2 | 1128 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1129 | { |
bf1ab978 DGM |
1130 | return ctx->ops->signal1_type_get(ctx); |
1131 | } | |
104f0cc2 ME |
1132 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
1133 | spufs_signal1_type_set, "%llu", SPU_ATTR_ACQUIRE); | |
bf1ab978 | 1134 | |
67207b96 AB |
1135 | |
1136 | static void spufs_signal2_type_set(void *data, u64 val) | |
1137 | { | |
1138 | struct spu_context *ctx = data; | |
67207b96 | 1139 | |
8b3d6663 AB |
1140 | spu_acquire(ctx); |
1141 | ctx->ops->signal2_type_set(ctx, val); | |
1142 | spu_release(ctx); | |
67207b96 AB |
1143 | } |
1144 | ||
104f0cc2 | 1145 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1146 | { |
bf1ab978 DGM |
1147 | return ctx->ops->signal2_type_get(ctx); |
1148 | } | |
104f0cc2 ME |
1149 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
1150 | spufs_signal2_type_set, "%llu", SPU_ATTR_ACQUIRE); | |
67207b96 | 1151 | |
27d5bf2a | 1152 | #if SPUFS_MMAP_4K |
78bde53e BH |
1153 | static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, |
1154 | unsigned long address) | |
d9379c4b | 1155 | { |
78bde53e | 1156 | return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); |
d9379c4b AB |
1157 | } |
1158 | ||
1159 | static struct vm_operations_struct spufs_mss_mmap_vmops = { | |
78bde53e | 1160 | .nopfn = spufs_mss_mmap_nopfn, |
d9379c4b AB |
1161 | }; |
1162 | ||
1163 | /* | |
1164 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1165 | */ |
1166 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1167 | { | |
1168 | if (!(vma->vm_flags & VM_SHARED)) | |
1169 | return -EINVAL; | |
1170 | ||
78bde53e | 1171 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
d9379c4b | 1172 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1173 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
d9379c4b AB |
1174 | |
1175 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1176 | return 0; | |
1177 | } | |
27d5bf2a BH |
1178 | #else /* SPUFS_MMAP_4K */ |
1179 | #define spufs_mss_mmap NULL | |
1180 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1181 | |
1182 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1183 | { | |
1184 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1185 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1186 | |
1187 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1188 | |
47d3a5fa | 1189 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1190 | if (!i->i_openers++) |
1191 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1192 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1193 | return nonseekable_open(inode, file); |
1194 | } | |
1195 | ||
43c2bbd9 CH |
1196 | static int |
1197 | spufs_mss_release(struct inode *inode, struct file *file) | |
1198 | { | |
1199 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1200 | struct spu_context *ctx = i->i_ctx; | |
1201 | ||
47d3a5fa | 1202 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1203 | if (!--i->i_openers) |
1204 | ctx->mss = NULL; | |
47d3a5fa | 1205 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1206 | return 0; |
1207 | } | |
1208 | ||
5dfe4c96 | 1209 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1210 | .open = spufs_mss_open, |
43c2bbd9 | 1211 | .release = spufs_mss_release, |
d9379c4b | 1212 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1213 | }; |
1214 | ||
78bde53e BH |
1215 | static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, |
1216 | unsigned long address) | |
27d5bf2a | 1217 | { |
78bde53e | 1218 | return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); |
27d5bf2a BH |
1219 | } |
1220 | ||
1221 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { | |
78bde53e | 1222 | .nopfn = spufs_psmap_mmap_nopfn, |
27d5bf2a BH |
1223 | }; |
1224 | ||
1225 | /* | |
1226 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1227 | */ | |
1228 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1229 | { | |
1230 | if (!(vma->vm_flags & VM_SHARED)) | |
1231 | return -EINVAL; | |
1232 | ||
78bde53e | 1233 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
27d5bf2a BH |
1234 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
1235 | | _PAGE_NO_CACHE | _PAGE_GUARDED); | |
1236 | ||
1237 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1242 | { | |
1243 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1244 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1245 | |
47d3a5fa | 1246 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1247 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1248 | if (!i->i_openers++) |
1249 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1250 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1251 | return nonseekable_open(inode, file); |
1252 | } | |
1253 | ||
43c2bbd9 CH |
1254 | static int |
1255 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1256 | { | |
1257 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1258 | struct spu_context *ctx = i->i_ctx; | |
1259 | ||
47d3a5fa | 1260 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1261 | if (!--i->i_openers) |
1262 | ctx->psmap = NULL; | |
47d3a5fa | 1263 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1264 | return 0; |
1265 | } | |
1266 | ||
5dfe4c96 | 1267 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1268 | .open = spufs_psmap_open, |
43c2bbd9 | 1269 | .release = spufs_psmap_release, |
27d5bf2a | 1270 | .mmap = spufs_psmap_mmap, |
d9379c4b AB |
1271 | }; |
1272 | ||
1273 | ||
27d5bf2a | 1274 | #if SPUFS_MMAP_4K |
78bde53e BH |
1275 | static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, |
1276 | unsigned long address) | |
6df10a82 | 1277 | { |
78bde53e | 1278 | return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); |
6df10a82 MN |
1279 | } |
1280 | ||
1281 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { | |
78bde53e | 1282 | .nopfn = spufs_mfc_mmap_nopfn, |
6df10a82 MN |
1283 | }; |
1284 | ||
1285 | /* | |
1286 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1287 | */ |
1288 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1289 | { | |
1290 | if (!(vma->vm_flags & VM_SHARED)) | |
1291 | return -EINVAL; | |
1292 | ||
78bde53e | 1293 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1294 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1295 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1296 | |
1297 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1298 | return 0; | |
1299 | } | |
27d5bf2a BH |
1300 | #else /* SPUFS_MMAP_4K */ |
1301 | #define spufs_mfc_mmap NULL | |
1302 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1303 | |
1304 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1305 | { | |
1306 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1307 | struct spu_context *ctx = i->i_ctx; | |
1308 | ||
1309 | /* we don't want to deal with DMA into other processes */ | |
1310 | if (ctx->owner != current->mm) | |
1311 | return -EINVAL; | |
1312 | ||
1313 | if (atomic_read(&inode->i_count) != 1) | |
1314 | return -EBUSY; | |
1315 | ||
47d3a5fa | 1316 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1317 | file->private_data = ctx; |
43c2bbd9 CH |
1318 | if (!i->i_openers++) |
1319 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1320 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1321 | return nonseekable_open(inode, file); |
1322 | } | |
1323 | ||
43c2bbd9 CH |
1324 | static int |
1325 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1326 | { | |
1327 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1328 | struct spu_context *ctx = i->i_ctx; | |
1329 | ||
47d3a5fa | 1330 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1331 | if (!--i->i_openers) |
1332 | ctx->mfc = NULL; | |
47d3a5fa | 1333 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1334 | return 0; |
1335 | } | |
1336 | ||
a33a7d73 AB |
1337 | /* interrupt-level mfc callback function. */ |
1338 | void spufs_mfc_callback(struct spu *spu) | |
1339 | { | |
1340 | struct spu_context *ctx = spu->ctx; | |
1341 | ||
1342 | wake_up_all(&ctx->mfc_wq); | |
1343 | ||
1344 | pr_debug("%s %s\n", __FUNCTION__, spu->name); | |
1345 | if (ctx->mfc_fasync) { | |
1346 | u32 free_elements, tagstatus; | |
1347 | unsigned int mask; | |
1348 | ||
1349 | /* no need for spu_acquire in interrupt context */ | |
1350 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1351 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1352 | ||
1353 | mask = 0; | |
1354 | if (free_elements & 0xffff) | |
1355 | mask |= POLLOUT; | |
1356 | if (tagstatus & ctx->tagwait) | |
1357 | mask |= POLLIN; | |
1358 | ||
1359 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1360 | } | |
1361 | } | |
1362 | ||
1363 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1364 | { | |
1365 | /* See if there is one tag group is complete */ | |
1366 | /* FIXME we need locking around tagwait */ | |
1367 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1368 | ctx->tagwait &= ~*status; | |
1369 | if (*status) | |
1370 | return 1; | |
1371 | ||
1372 | /* enable interrupt waiting for any tag group, | |
1373 | may silently fail if interrupts are already enabled */ | |
1374 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1379 | size_t size, loff_t *pos) | |
1380 | { | |
1381 | struct spu_context *ctx = file->private_data; | |
1382 | int ret = -EINVAL; | |
1383 | u32 status; | |
1384 | ||
1385 | if (size != 4) | |
1386 | goto out; | |
1387 | ||
1388 | spu_acquire(ctx); | |
1389 | if (file->f_flags & O_NONBLOCK) { | |
1390 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1391 | if (!(status & ctx->tagwait)) | |
1392 | ret = -EAGAIN; | |
1393 | else | |
1394 | ctx->tagwait &= ~status; | |
1395 | } else { | |
1396 | ret = spufs_wait(ctx->mfc_wq, | |
1397 | spufs_read_mfc_tagstatus(ctx, &status)); | |
1398 | } | |
1399 | spu_release(ctx); | |
1400 | ||
1401 | if (ret) | |
1402 | goto out; | |
1403 | ||
1404 | ret = 4; | |
1405 | if (copy_to_user(buffer, &status, 4)) | |
1406 | ret = -EFAULT; | |
1407 | ||
1408 | out: | |
1409 | return ret; | |
1410 | } | |
1411 | ||
1412 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1413 | { | |
1414 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, | |
1415 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); | |
1416 | ||
1417 | switch (cmd->cmd) { | |
1418 | case MFC_PUT_CMD: | |
1419 | case MFC_PUTF_CMD: | |
1420 | case MFC_PUTB_CMD: | |
1421 | case MFC_GET_CMD: | |
1422 | case MFC_GETF_CMD: | |
1423 | case MFC_GETB_CMD: | |
1424 | break; | |
1425 | default: | |
1426 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1427 | return -EIO; | |
1428 | } | |
1429 | ||
1430 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
1431 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", | |
1432 | cmd->ea, cmd->lsa); | |
1433 | return -EIO; | |
1434 | } | |
1435 | ||
1436 | switch (cmd->size & 0xf) { | |
1437 | case 1: | |
1438 | break; | |
1439 | case 2: | |
1440 | if (cmd->lsa & 1) | |
1441 | goto error; | |
1442 | break; | |
1443 | case 4: | |
1444 | if (cmd->lsa & 3) | |
1445 | goto error; | |
1446 | break; | |
1447 | case 8: | |
1448 | if (cmd->lsa & 7) | |
1449 | goto error; | |
1450 | break; | |
1451 | case 0: | |
1452 | if (cmd->lsa & 15) | |
1453 | goto error; | |
1454 | break; | |
1455 | error: | |
1456 | default: | |
1457 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1458 | cmd->lsa & 0xf, cmd->size); | |
1459 | return -EIO; | |
1460 | } | |
1461 | ||
1462 | if (cmd->size > 16 * 1024) { | |
1463 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1464 | return -EIO; | |
1465 | } | |
1466 | ||
1467 | if (cmd->tag & 0xfff0) { | |
1468 | /* we reserve the higher tag numbers for kernel use */ | |
1469 | pr_debug("invalid DMA tag\n"); | |
1470 | return -EIO; | |
1471 | } | |
1472 | ||
1473 | if (cmd->class) { | |
1474 | /* not supported in this version */ | |
1475 | pr_debug("invalid DMA class\n"); | |
1476 | return -EIO; | |
1477 | } | |
1478 | ||
1479 | return 0; | |
1480 | } | |
1481 | ||
1482 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1483 | struct mfc_dma_command cmd, | |
1484 | int *error) | |
1485 | { | |
1486 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1487 | if (*error == -EAGAIN) { | |
1488 | /* wait for any tag group to complete | |
1489 | so we have space for the new command */ | |
1490 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1491 | /* try again, because the queue might be | |
1492 | empty again */ | |
1493 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1494 | if (*error == -EAGAIN) | |
1495 | return 0; | |
1496 | } | |
1497 | return 1; | |
1498 | } | |
1499 | ||
1500 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1501 | size_t size, loff_t *pos) | |
1502 | { | |
1503 | struct spu_context *ctx = file->private_data; | |
1504 | struct mfc_dma_command cmd; | |
1505 | int ret = -EINVAL; | |
1506 | ||
1507 | if (size != sizeof cmd) | |
1508 | goto out; | |
1509 | ||
1510 | ret = -EFAULT; | |
1511 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1512 | goto out; | |
1513 | ||
1514 | ret = spufs_check_valid_dma(&cmd); | |
1515 | if (ret) | |
1516 | goto out; | |
1517 | ||
33bfd7a7 AB |
1518 | spu_acquire(ctx); |
1519 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); | |
577f8f10 AM |
1520 | if (ret) |
1521 | goto out; | |
1522 | ||
a33a7d73 AB |
1523 | if (file->f_flags & O_NONBLOCK) { |
1524 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1525 | } else { | |
1526 | int status; | |
1527 | ret = spufs_wait(ctx->mfc_wq, | |
1528 | spu_send_mfc_command(ctx, cmd, &status)); | |
1529 | if (status) | |
1530 | ret = status; | |
1531 | } | |
a33a7d73 AB |
1532 | |
1533 | if (ret) | |
933b0e35 | 1534 | goto out_unlock; |
a33a7d73 AB |
1535 | |
1536 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1537 | ret = size; |
a33a7d73 | 1538 | |
933b0e35 KA |
1539 | out_unlock: |
1540 | spu_release(ctx); | |
a33a7d73 AB |
1541 | out: |
1542 | return ret; | |
1543 | } | |
1544 | ||
1545 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1546 | { | |
1547 | struct spu_context *ctx = file->private_data; | |
1548 | u32 free_elements, tagstatus; | |
1549 | unsigned int mask; | |
1550 | ||
933b0e35 KA |
1551 | poll_wait(file, &ctx->mfc_wq, wait); |
1552 | ||
a33a7d73 AB |
1553 | spu_acquire(ctx); |
1554 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); | |
1555 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1556 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1557 | spu_release(ctx); | |
1558 | ||
a33a7d73 AB |
1559 | mask = 0; |
1560 | if (free_elements & 0xffff) | |
1561 | mask |= POLLOUT | POLLWRNORM; | |
1562 | if (tagstatus & ctx->tagwait) | |
1563 | mask |= POLLIN | POLLRDNORM; | |
1564 | ||
1565 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, | |
1566 | free_elements, tagstatus, ctx->tagwait); | |
1567 | ||
1568 | return mask; | |
1569 | } | |
1570 | ||
73b6af8a | 1571 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1572 | { |
1573 | struct spu_context *ctx = file->private_data; | |
1574 | int ret; | |
1575 | ||
1576 | spu_acquire(ctx); | |
1577 | #if 0 | |
1578 | /* this currently hangs */ | |
1579 | ret = spufs_wait(ctx->mfc_wq, | |
1580 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1581 | if (ret) | |
1582 | goto out; | |
1583 | ret = spufs_wait(ctx->mfc_wq, | |
1584 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
1585 | out: | |
1586 | #else | |
1587 | ret = 0; | |
1588 | #endif | |
1589 | spu_release(ctx); | |
1590 | ||
1591 | return ret; | |
1592 | } | |
1593 | ||
1594 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1595 | int datasync) | |
1596 | { | |
73b6af8a | 1597 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1598 | } |
1599 | ||
1600 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1601 | { | |
1602 | struct spu_context *ctx = file->private_data; | |
1603 | ||
1604 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1605 | } | |
1606 | ||
5dfe4c96 | 1607 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1608 | .open = spufs_mfc_open, |
43c2bbd9 | 1609 | .release = spufs_mfc_release, |
a33a7d73 AB |
1610 | .read = spufs_mfc_read, |
1611 | .write = spufs_mfc_write, | |
1612 | .poll = spufs_mfc_poll, | |
1613 | .flush = spufs_mfc_flush, | |
1614 | .fsync = spufs_mfc_fsync, | |
1615 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1616 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1617 | }; |
1618 | ||
67207b96 AB |
1619 | static void spufs_npc_set(void *data, u64 val) |
1620 | { | |
1621 | struct spu_context *ctx = data; | |
8b3d6663 AB |
1622 | spu_acquire(ctx); |
1623 | ctx->ops->npc_write(ctx, val); | |
1624 | spu_release(ctx); | |
67207b96 AB |
1625 | } |
1626 | ||
104f0cc2 | 1627 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1628 | { |
1629 | return ctx->ops->npc_read(ctx); | |
1630 | } | |
104f0cc2 ME |
1631 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1632 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1633 | |
8b3d6663 AB |
1634 | static void spufs_decr_set(void *data, u64 val) |
1635 | { | |
1636 | struct spu_context *ctx = data; | |
1637 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1638 | spu_acquire_saved(ctx); | |
1639 | lscsa->decr.slot[0] = (u32) val; | |
27b1ea09 | 1640 | spu_release_saved(ctx); |
8b3d6663 AB |
1641 | } |
1642 | ||
104f0cc2 | 1643 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1644 | { |
8b3d6663 | 1645 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1646 | return lscsa->decr.slot[0]; |
1647 | } | |
104f0cc2 ME |
1648 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1649 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 AB |
1650 | |
1651 | static void spufs_decr_status_set(void *data, u64 val) | |
1652 | { | |
1653 | struct spu_context *ctx = data; | |
8b3d6663 | 1654 | spu_acquire_saved(ctx); |
d40a01d4 MN |
1655 | if (val) |
1656 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1657 | else | |
1658 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1659 | spu_release_saved(ctx); |
8b3d6663 AB |
1660 | } |
1661 | ||
104f0cc2 | 1662 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1663 | { |
d40a01d4 MN |
1664 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1665 | return SPU_DECR_STATUS_RUNNING; | |
1666 | else | |
1667 | return 0; | |
bf1ab978 | 1668 | } |
104f0cc2 ME |
1669 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1670 | spufs_decr_status_set, "0x%llx\n", | |
1671 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1672 | |
8b3d6663 AB |
1673 | static void spufs_event_mask_set(void *data, u64 val) |
1674 | { | |
1675 | struct spu_context *ctx = data; | |
1676 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1677 | spu_acquire_saved(ctx); | |
1678 | lscsa->event_mask.slot[0] = (u32) val; | |
27b1ea09 | 1679 | spu_release_saved(ctx); |
8b3d6663 AB |
1680 | } |
1681 | ||
104f0cc2 | 1682 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1683 | { |
8b3d6663 | 1684 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1685 | return lscsa->event_mask.slot[0]; |
1686 | } | |
1687 | ||
104f0cc2 ME |
1688 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1689 | spufs_event_mask_set, "0x%llx\n", | |
1690 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1691 | |
104f0cc2 | 1692 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1693 | { |
b9e3bd77 | 1694 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1695 | u64 stat; |
b9e3bd77 DGM |
1696 | stat = state->spu_chnlcnt_RW[0]; |
1697 | if (stat) | |
bf1ab978 DGM |
1698 | return state->spu_chnldata_RW[0]; |
1699 | return 0; | |
1700 | } | |
104f0cc2 ME |
1701 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1702 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1703 | |
8b3d6663 AB |
1704 | static void spufs_srr0_set(void *data, u64 val) |
1705 | { | |
1706 | struct spu_context *ctx = data; | |
1707 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
1708 | spu_acquire_saved(ctx); | |
1709 | lscsa->srr0.slot[0] = (u32) val; | |
27b1ea09 | 1710 | spu_release_saved(ctx); |
8b3d6663 AB |
1711 | } |
1712 | ||
104f0cc2 | 1713 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1714 | { |
8b3d6663 | 1715 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1716 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1717 | } |
104f0cc2 ME |
1718 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1719 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1720 | |
104f0cc2 | 1721 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1722 | { |
7b1a7014 AB |
1723 | u64 num; |
1724 | ||
7b1a7014 AB |
1725 | if (ctx->state == SPU_STATE_RUNNABLE) |
1726 | num = ctx->spu->number; | |
1727 | else | |
1728 | num = (unsigned int)-1; | |
7b1a7014 AB |
1729 | |
1730 | return num; | |
1731 | } | |
104f0cc2 ME |
1732 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1733 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1734 | |
104f0cc2 | 1735 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1736 | { |
1737 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1738 | return ctx->object_id; |
bf1ab978 DGM |
1739 | } |
1740 | ||
86767277 AB |
1741 | static void spufs_object_id_set(void *data, u64 id) |
1742 | { | |
1743 | struct spu_context *ctx = data; | |
1744 | ctx->object_id = id; | |
1745 | } | |
1746 | ||
104f0cc2 ME |
1747 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1748 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1749 | |
104f0cc2 | 1750 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1751 | { |
bf1ab978 DGM |
1752 | return ctx->csa.priv2.spu_lslr_RW; |
1753 | } | |
104f0cc2 ME |
1754 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1755 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1756 | |
1757 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1758 | { | |
1759 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1760 | struct spu_context *ctx = i->i_ctx; | |
1761 | file->private_data = ctx; | |
1762 | return 0; | |
1763 | } | |
1764 | ||
cbe709c1 BH |
1765 | static int spufs_caps_show(struct seq_file *s, void *private) |
1766 | { | |
1767 | struct spu_context *ctx = s->private; | |
1768 | ||
1769 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
1770 | seq_puts(s, "sched\n"); | |
1771 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
1772 | seq_puts(s, "step\n"); | |
1773 | return 0; | |
1774 | } | |
1775 | ||
1776 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
1777 | { | |
1778 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
1779 | } | |
1780 | ||
1781 | static const struct file_operations spufs_caps_fops = { | |
1782 | .open = spufs_caps_open, | |
1783 | .read = seq_read, | |
1784 | .llseek = seq_lseek, | |
1785 | .release = single_release, | |
1786 | }; | |
1787 | ||
bf1ab978 DGM |
1788 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
1789 | char __user *buf, size_t len, loff_t *pos) | |
1790 | { | |
1791 | u32 mbox_stat; | |
1792 | u32 data; | |
1793 | ||
1794 | mbox_stat = ctx->csa.prob.mb_stat_R; | |
1795 | if (mbox_stat & 0x0000ff) { | |
1796 | data = ctx->csa.prob.pu_mb_R; | |
1797 | } | |
1798 | ||
1799 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1800 | } | |
1801 | ||
69a2f00c DGM |
1802 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1803 | size_t len, loff_t *pos) | |
1804 | { | |
bf1ab978 | 1805 | int ret; |
69a2f00c | 1806 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
1807 | |
1808 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1809 | return -EFAULT; | |
1810 | ||
1811 | spu_acquire_saved(ctx); | |
1812 | spin_lock(&ctx->csa.register_lock); | |
bf1ab978 | 1813 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 1814 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 1815 | spu_release_saved(ctx); |
69a2f00c | 1816 | |
bf1ab978 | 1817 | return ret; |
69a2f00c DGM |
1818 | } |
1819 | ||
5dfe4c96 | 1820 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
1821 | .open = spufs_info_open, |
1822 | .read = spufs_mbox_info_read, | |
1823 | .llseek = generic_file_llseek, | |
1824 | }; | |
1825 | ||
bf1ab978 DGM |
1826 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
1827 | char __user *buf, size_t len, loff_t *pos) | |
1828 | { | |
1829 | u32 ibox_stat; | |
1830 | u32 data; | |
1831 | ||
1832 | ibox_stat = ctx->csa.prob.mb_stat_R; | |
1833 | if (ibox_stat & 0xff0000) { | |
1834 | data = ctx->csa.priv2.puint_mb_R; | |
1835 | } | |
1836 | ||
1837 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1838 | } | |
1839 | ||
69a2f00c DGM |
1840 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
1841 | size_t len, loff_t *pos) | |
1842 | { | |
1843 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 1844 | int ret; |
69a2f00c DGM |
1845 | |
1846 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1847 | return -EFAULT; | |
1848 | ||
1849 | spu_acquire_saved(ctx); | |
1850 | spin_lock(&ctx->csa.register_lock); | |
bf1ab978 | 1851 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 1852 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 1853 | spu_release_saved(ctx); |
69a2f00c | 1854 | |
bf1ab978 | 1855 | return ret; |
69a2f00c DGM |
1856 | } |
1857 | ||
5dfe4c96 | 1858 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
1859 | .open = spufs_info_open, |
1860 | .read = spufs_ibox_info_read, | |
1861 | .llseek = generic_file_llseek, | |
1862 | }; | |
1863 | ||
bf1ab978 DGM |
1864 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
1865 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 1866 | { |
69a2f00c DGM |
1867 | int i, cnt; |
1868 | u32 data[4]; | |
1869 | u32 wbox_stat; | |
1870 | ||
bf1ab978 DGM |
1871 | wbox_stat = ctx->csa.prob.mb_stat_R; |
1872 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
1873 | for (i = 0; i < cnt; i++) { | |
1874 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
1875 | } | |
1876 | ||
1877 | return simple_read_from_buffer(buf, len, pos, &data, | |
1878 | cnt * sizeof(u32)); | |
1879 | } | |
1880 | ||
1881 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
1882 | size_t len, loff_t *pos) | |
1883 | { | |
1884 | struct spu_context *ctx = file->private_data; | |
1885 | int ret; | |
1886 | ||
69a2f00c DGM |
1887 | if (!access_ok(VERIFY_WRITE, buf, len)) |
1888 | return -EFAULT; | |
1889 | ||
1890 | spu_acquire_saved(ctx); | |
1891 | spin_lock(&ctx->csa.register_lock); | |
bf1ab978 | 1892 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 1893 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 1894 | spu_release_saved(ctx); |
69a2f00c | 1895 | |
bf1ab978 | 1896 | return ret; |
69a2f00c DGM |
1897 | } |
1898 | ||
5dfe4c96 | 1899 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
1900 | .open = spufs_info_open, |
1901 | .read = spufs_wbox_info_read, | |
1902 | .llseek = generic_file_llseek, | |
1903 | }; | |
1904 | ||
bf1ab978 DGM |
1905 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
1906 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 1907 | { |
b9e3bd77 DGM |
1908 | struct spu_dma_info info; |
1909 | struct mfc_cq_sr *qp, *spuqp; | |
1910 | int i; | |
1911 | ||
b9e3bd77 DGM |
1912 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
1913 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
1914 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
1915 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
1916 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
1917 | for (i = 0; i < 16; i++) { | |
1918 | qp = &info.dma_info_command_data[i]; | |
1919 | spuqp = &ctx->csa.priv2.spuq[i]; | |
1920 | ||
1921 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
1922 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
1923 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
1924 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
1925 | } | |
b9e3bd77 DGM |
1926 | |
1927 | return simple_read_from_buffer(buf, len, pos, &info, | |
1928 | sizeof info); | |
1929 | } | |
1930 | ||
bf1ab978 DGM |
1931 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
1932 | size_t len, loff_t *pos) | |
1933 | { | |
1934 | struct spu_context *ctx = file->private_data; | |
1935 | int ret; | |
1936 | ||
1937 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1938 | return -EFAULT; | |
1939 | ||
1940 | spu_acquire_saved(ctx); | |
1941 | spin_lock(&ctx->csa.register_lock); | |
1942 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
1943 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 1944 | spu_release_saved(ctx); |
bf1ab978 DGM |
1945 | |
1946 | return ret; | |
1947 | } | |
1948 | ||
5dfe4c96 | 1949 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
1950 | .open = spufs_info_open, |
1951 | .read = spufs_dma_info_read, | |
1952 | }; | |
1953 | ||
bf1ab978 DGM |
1954 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
1955 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 1956 | { |
b9e3bd77 | 1957 | struct spu_proxydma_info info; |
b9e3bd77 | 1958 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 1959 | int ret = sizeof info; |
b9e3bd77 DGM |
1960 | int i; |
1961 | ||
1962 | if (len < ret) | |
1963 | return -EINVAL; | |
1964 | ||
1965 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1966 | return -EFAULT; | |
1967 | ||
b9e3bd77 DGM |
1968 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
1969 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
1970 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
1971 | for (i = 0; i < 8; i++) { | |
1972 | qp = &info.proxydma_info_command_data[i]; | |
1973 | puqp = &ctx->csa.priv2.puq[i]; | |
1974 | ||
1975 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
1976 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
1977 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
1978 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
1979 | } | |
bf1ab978 DGM |
1980 | |
1981 | return simple_read_from_buffer(buf, len, pos, &info, | |
1982 | sizeof info); | |
1983 | } | |
1984 | ||
1985 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
1986 | size_t len, loff_t *pos) | |
1987 | { | |
1988 | struct spu_context *ctx = file->private_data; | |
1989 | int ret; | |
1990 | ||
1991 | spu_acquire_saved(ctx); | |
1992 | spin_lock(&ctx->csa.register_lock); | |
1993 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 1994 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 1995 | spu_release_saved(ctx); |
b9e3bd77 | 1996 | |
b9e3bd77 DGM |
1997 | return ret; |
1998 | } | |
1999 | ||
5dfe4c96 | 2000 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2001 | .open = spufs_info_open, |
2002 | .read = spufs_proxydma_info_read, | |
2003 | }; | |
2004 | ||
476273ad CH |
2005 | static int spufs_show_tid(struct seq_file *s, void *private) |
2006 | { | |
2007 | struct spu_context *ctx = s->private; | |
2008 | ||
2009 | seq_printf(s, "%d\n", ctx->tid); | |
2010 | return 0; | |
2011 | } | |
2012 | ||
2013 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2014 | { | |
2015 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2016 | } | |
2017 | ||
2018 | static const struct file_operations spufs_tid_fops = { | |
2019 | .open = spufs_tid_open, | |
2020 | .read = seq_read, | |
2021 | .llseek = seq_lseek, | |
2022 | .release = single_release, | |
2023 | }; | |
2024 | ||
e9f8a0b6 CH |
2025 | static const char *ctx_state_names[] = { |
2026 | "user", "system", "iowait", "loaded" | |
2027 | }; | |
2028 | ||
2029 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2030 | enum spu_utilization_state state) |
e9f8a0b6 | 2031 | { |
27ec41d3 AD |
2032 | struct timespec ts; |
2033 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2034 | |
27ec41d3 AD |
2035 | /* |
2036 | * In general, utilization statistics are updated by the controlling | |
2037 | * thread as the spu context moves through various well defined | |
2038 | * state transitions, but if the context is lazily loaded its | |
2039 | * utilization statistics are not updated as the controlling thread | |
2040 | * is not tightly coupled with the execution of the spu context. We | |
2041 | * calculate and apply the time delta from the last recorded state | |
2042 | * of the spu context. | |
2043 | */ | |
2044 | if (ctx->spu && ctx->stats.util_state == state) { | |
2045 | ktime_get_ts(&ts); | |
2046 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2047 | } | |
e9f8a0b6 | 2048 | |
27ec41d3 | 2049 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2050 | } |
2051 | ||
2052 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2053 | { | |
2054 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2055 | ||
2056 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2057 | slb_flts += (ctx->spu->stats.slb_flt - | |
2058 | ctx->stats.slb_flt_base); | |
2059 | } | |
2060 | ||
2061 | return slb_flts; | |
2062 | } | |
2063 | ||
2064 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2065 | { | |
2066 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2067 | ||
2068 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2069 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2070 | ctx->stats.class2_intr_base); | |
2071 | } | |
2072 | ||
2073 | return class2_intrs; | |
2074 | } | |
2075 | ||
2076 | ||
2077 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2078 | { | |
2079 | struct spu_context *ctx = s->private; | |
2080 | ||
2081 | spu_acquire(ctx); | |
2082 | seq_printf(s, "%s %llu %llu %llu %llu " | |
2083 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2084 | ctx_state_names[ctx->stats.util_state], |
2085 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2086 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2087 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2088 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2089 | ctx->stats.vol_ctx_switch, |
2090 | ctx->stats.invol_ctx_switch, | |
2091 | spufs_slb_flts(ctx), | |
2092 | ctx->stats.hash_flt, | |
2093 | ctx->stats.min_flt, | |
2094 | ctx->stats.maj_flt, | |
2095 | spufs_class2_intrs(ctx), | |
2096 | ctx->stats.libassist); | |
2097 | spu_release(ctx); | |
2098 | return 0; | |
2099 | } | |
2100 | ||
2101 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2102 | { | |
2103 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2104 | } | |
2105 | ||
2106 | static const struct file_operations spufs_stat_fops = { | |
2107 | .open = spufs_stat_open, | |
2108 | .read = seq_read, | |
2109 | .llseek = seq_lseek, | |
2110 | .release = single_release, | |
2111 | }; | |
2112 | ||
2113 | ||
67207b96 | 2114 | struct tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2115 | { "capabilities", &spufs_caps_fops, 0444, }, |
67207b96 | 2116 | { "mem", &spufs_mem_fops, 0666, }, |
8b3d6663 | 2117 | { "regs", &spufs_regs_fops, 0666, }, |
67207b96 AB |
2118 | { "mbox", &spufs_mbox_fops, 0444, }, |
2119 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2120 | { "wbox", &spufs_wbox_fops, 0222, }, | |
2121 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
2122 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
2123 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
603c4612 JK |
2124 | { "signal1", &spufs_signal1_fops, 0666, }, |
2125 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2126 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2127 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2128 | { "cntl", &spufs_cntl_fops, 0666, }, |
8b3d6663 | 2129 | { "fpcr", &spufs_fpcr_fops, 0666, }, |
b9e3bd77 DGM |
2130 | { "lslr", &spufs_lslr_ops, 0444, }, |
2131 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2132 | { "mss", &spufs_mss_fops, 0666, }, | |
2133 | { "npc", &spufs_npc_ops, 0666, }, | |
2134 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2135 | { "decr", &spufs_decr_ops, 0666, }, |
2136 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2137 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2138 | { "event_status", &spufs_event_status_ops, 0444, }, |
27d5bf2a | 2139 | { "psmap", &spufs_psmap_fops, 0666, }, |
86767277 AB |
2140 | { "phys-id", &spufs_id_ops, 0666, }, |
2141 | { "object-id", &spufs_object_id_ops, 0666, }, | |
69a2f00c DGM |
2142 | { "mbox_info", &spufs_mbox_info_fops, 0444, }, |
2143 | { "ibox_info", &spufs_ibox_info_fops, 0444, }, | |
2144 | { "wbox_info", &spufs_wbox_info_fops, 0444, }, | |
b9e3bd77 DGM |
2145 | { "dma_info", &spufs_dma_info_fops, 0444, }, |
2146 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, | |
476273ad | 2147 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2148 | { "stat", &spufs_stat_fops, 0444, }, |
67207b96 AB |
2149 | {}, |
2150 | }; | |
5737edd1 MN |
2151 | |
2152 | struct tree_descr spufs_dir_nosched_contents[] = { | |
cbe709c1 | 2153 | { "capabilities", &spufs_caps_fops, 0444, }, |
5737edd1 MN |
2154 | { "mem", &spufs_mem_fops, 0666, }, |
2155 | { "mbox", &spufs_mbox_fops, 0444, }, | |
2156 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2157 | { "wbox", &spufs_wbox_fops, 0222, }, | |
2158 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
2159 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
2160 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
d054b36f JK |
2161 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2162 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2163 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2164 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2165 | { "mss", &spufs_mss_fops, 0666, }, | |
2166 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2167 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2168 | { "npc", &spufs_npc_ops, 0666, }, | |
2169 | { "psmap", &spufs_psmap_fops, 0666, }, | |
2170 | { "phys-id", &spufs_id_ops, 0666, }, | |
2171 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2172 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2173 | { "stat", &spufs_stat_fops, 0444, }, |
5737edd1 MN |
2174 | {}, |
2175 | }; | |
bf1ab978 DGM |
2176 | |
2177 | struct spufs_coredump_reader spufs_coredump_read[] = { | |
4fca9c42 ME |
2178 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2179 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2180 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2181 | { "decr", NULL, spufs_decr_get, 19 }, | |
2182 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2183 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2184 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2185 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2186 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2187 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2188 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2189 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2190 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2191 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2192 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2193 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2194 | { "proxydma_info", __spufs_proxydma_info_read, | |
2195 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2196 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2197 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2198 | { NULL }, |
bf1ab978 | 2199 | }; |