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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> | |
4b16f8e2 | 27 | #include <linux/export.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> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
67207b96 AB |
33 | |
34 | #include <asm/io.h> | |
dfe1e09f | 35 | #include <asm/time.h> |
67207b96 | 36 | #include <asm/spu.h> |
b9e3bd77 | 37 | #include <asm/spu_info.h> |
67207b96 AB |
38 | #include <asm/uaccess.h> |
39 | ||
40 | #include "spufs.h" | |
ae142e0c | 41 | #include "sputrace.h" |
67207b96 | 42 | |
27d5bf2a BH |
43 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
44 | ||
197b1a82 CH |
45 | /* Simple attribute files */ |
46 | struct spufs_attr { | |
47 | int (*get)(void *, u64 *); | |
48 | int (*set)(void *, u64); | |
49 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
50 | char set_buf[24]; | |
51 | void *data; | |
52 | const char *fmt; /* format for read operation */ | |
53 | struct mutex mutex; /* protects access to these buffers */ | |
54 | }; | |
55 | ||
56 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
57 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
58 | const char *fmt) | |
59 | { | |
60 | struct spufs_attr *attr; | |
61 | ||
62 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
63 | if (!attr) | |
64 | return -ENOMEM; | |
65 | ||
66 | attr->get = get; | |
67 | attr->set = set; | |
68 | attr->data = inode->i_private; | |
69 | attr->fmt = fmt; | |
70 | mutex_init(&attr->mutex); | |
71 | file->private_data = attr; | |
72 | ||
73 | return nonseekable_open(inode, file); | |
74 | } | |
75 | ||
76 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
77 | { | |
78 | kfree(file->private_data); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
83 | size_t len, loff_t *ppos) | |
84 | { | |
85 | struct spufs_attr *attr; | |
86 | size_t size; | |
87 | ssize_t ret; | |
88 | ||
89 | attr = file->private_data; | |
90 | if (!attr->get) | |
91 | return -EACCES; | |
92 | ||
93 | ret = mutex_lock_interruptible(&attr->mutex); | |
94 | if (ret) | |
95 | return ret; | |
96 | ||
97 | if (*ppos) { /* continued read */ | |
98 | size = strlen(attr->get_buf); | |
99 | } else { /* first read */ | |
100 | u64 val; | |
101 | ret = attr->get(attr->data, &val); | |
102 | if (ret) | |
103 | goto out; | |
104 | ||
105 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
106 | attr->fmt, (unsigned long long)val); | |
107 | } | |
108 | ||
109 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
110 | out: | |
111 | mutex_unlock(&attr->mutex); | |
112 | return ret; | |
113 | } | |
114 | ||
115 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
116 | size_t len, loff_t *ppos) | |
117 | { | |
118 | struct spufs_attr *attr; | |
119 | u64 val; | |
120 | size_t size; | |
121 | ssize_t ret; | |
122 | ||
123 | attr = file->private_data; | |
124 | if (!attr->set) | |
125 | return -EACCES; | |
126 | ||
127 | ret = mutex_lock_interruptible(&attr->mutex); | |
128 | if (ret) | |
129 | return ret; | |
130 | ||
131 | ret = -EFAULT; | |
132 | size = min(sizeof(attr->set_buf) - 1, len); | |
133 | if (copy_from_user(attr->set_buf, buf, size)) | |
134 | goto out; | |
135 | ||
136 | ret = len; /* claim we got the whole input */ | |
137 | attr->set_buf[size] = '\0'; | |
138 | val = simple_strtol(attr->set_buf, NULL, 0); | |
139 | attr->set(attr->data, val); | |
140 | out: | |
141 | mutex_unlock(&attr->mutex); | |
142 | return ret; | |
143 | } | |
144 | ||
145 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
146 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
147 | { \ | |
148 | __simple_attr_check_format(__fmt, 0ull); \ | |
149 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
150 | } \ | |
828c0950 | 151 | static const struct file_operations __fops = { \ |
197b1a82 CH |
152 | .open = __fops ## _open, \ |
153 | .release = spufs_attr_release, \ | |
154 | .read = spufs_attr_read, \ | |
155 | .write = spufs_attr_write, \ | |
fc15351d | 156 | .llseek = generic_file_llseek, \ |
197b1a82 CH |
157 | }; |
158 | ||
cbe709c1 | 159 | |
67207b96 AB |
160 | static int |
161 | spufs_mem_open(struct inode *inode, struct file *file) | |
162 | { | |
163 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 164 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 165 | |
47d3a5fa | 166 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 167 | file->private_data = ctx; |
43c2bbd9 CH |
168 | if (!i->i_openers++) |
169 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 170 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
171 | return 0; |
172 | } | |
173 | ||
174 | static int | |
175 | spufs_mem_release(struct inode *inode, struct file *file) | |
176 | { | |
177 | struct spufs_inode_info *i = SPUFS_I(inode); | |
178 | struct spu_context *ctx = i->i_ctx; | |
179 | ||
47d3a5fa | 180 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
181 | if (!--i->i_openers) |
182 | ctx->local_store = NULL; | |
47d3a5fa | 183 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
184 | return 0; |
185 | } | |
186 | ||
bf1ab978 DGM |
187 | static ssize_t |
188 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
189 | size_t size, loff_t *pos) | |
190 | { | |
191 | char *local_store = ctx->ops->get_ls(ctx); | |
192 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
193 | LS_SIZE); | |
194 | } | |
195 | ||
67207b96 AB |
196 | static ssize_t |
197 | spufs_mem_read(struct file *file, char __user *buffer, | |
198 | size_t size, loff_t *pos) | |
199 | { | |
bf1ab978 | 200 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 201 | ssize_t ret; |
67207b96 | 202 | |
c9101bdb CH |
203 | ret = spu_acquire(ctx); |
204 | if (ret) | |
205 | return ret; | |
bf1ab978 | 206 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 207 | spu_release(ctx); |
c9101bdb | 208 | |
67207b96 AB |
209 | return ret; |
210 | } | |
211 | ||
212 | static ssize_t | |
213 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 214 | size_t size, loff_t *ppos) |
67207b96 AB |
215 | { |
216 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 217 | char *local_store; |
aa0ed2bd | 218 | loff_t pos = *ppos; |
8b3d6663 | 219 | int ret; |
67207b96 | 220 | |
aa0ed2bd | 221 | if (pos > LS_SIZE) |
67207b96 | 222 | return -EFBIG; |
8b3d6663 | 223 | |
c9101bdb CH |
224 | ret = spu_acquire(ctx); |
225 | if (ret) | |
226 | return ret; | |
227 | ||
8b3d6663 | 228 | local_store = ctx->ops->get_ls(ctx); |
63c3b9d7 | 229 | size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); |
8b3d6663 | 230 | spu_release(ctx); |
aa0ed2bd | 231 | |
aa0ed2bd | 232 | return size; |
67207b96 AB |
233 | } |
234 | ||
b1e2270f NP |
235 | static int |
236 | spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
8b3d6663 | 237 | { |
f1fa74f4 | 238 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
239 | unsigned long pfn, offset; |
240 | ||
b1e2270f | 241 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 242 | if (offset >= LS_SIZE) |
b1e2270f | 243 | return VM_FAULT_SIGBUS; |
128b8546 | 244 | |
b1e2270f | 245 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
1a29d85e | 246 | vmf->address, offset); |
f1fa74f4 | 247 | |
c9101bdb | 248 | if (spu_acquire(ctx)) |
b1e2270f | 249 | return VM_FAULT_NOPAGE; |
8b3d6663 | 250 | |
ac91cb8d | 251 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 252 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 253 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 254 | } else { |
64b3d0e8 | 255 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 256 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 257 | } |
1a29d85e | 258 | vm_insert_pfn(vma, vmf->address, pfn); |
8b3d6663 | 259 | |
78bde53e | 260 | spu_release(ctx); |
8b3d6663 | 261 | |
b1e2270f | 262 | return VM_FAULT_NOPAGE; |
8b3d6663 AB |
263 | } |
264 | ||
a352894d BH |
265 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
266 | unsigned long address, | |
267 | void *buf, int len, int write) | |
268 | { | |
269 | struct spu_context *ctx = vma->vm_file->private_data; | |
270 | unsigned long offset = address - vma->vm_start; | |
271 | char *local_store; | |
272 | ||
273 | if (write && !(vma->vm_flags & VM_WRITE)) | |
274 | return -EACCES; | |
275 | if (spu_acquire(ctx)) | |
276 | return -EINTR; | |
277 | if ((offset + len) > vma->vm_end) | |
278 | len = vma->vm_end - offset; | |
279 | local_store = ctx->ops->get_ls(ctx); | |
280 | if (write) | |
281 | memcpy_toio(local_store + offset, buf, len); | |
282 | else | |
283 | memcpy_fromio(buf, local_store + offset, len); | |
284 | spu_release(ctx); | |
285 | return len; | |
286 | } | |
78bde53e | 287 | |
f0f37e2f | 288 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 289 | .fault = spufs_mem_mmap_fault, |
a352894d | 290 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
291 | }; |
292 | ||
f1fa74f4 | 293 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 294 | { |
8b3d6663 AB |
295 | if (!(vma->vm_flags & VM_SHARED)) |
296 | return -EINVAL; | |
67207b96 | 297 | |
78bde53e | 298 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 299 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
300 | |
301 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
302 | return 0; |
303 | } | |
304 | ||
5dfe4c96 | 305 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
306 | .open = spufs_mem_open, |
307 | .release = spufs_mem_release, | |
308 | .read = spufs_mem_read, | |
309 | .write = spufs_mem_write, | |
310 | .llseek = generic_file_llseek, | |
311 | .mmap = spufs_mem_mmap, | |
8b3d6663 AB |
312 | }; |
313 | ||
b1e2270f NP |
314 | static int spufs_ps_fault(struct vm_area_struct *vma, |
315 | struct vm_fault *vmf, | |
78bde53e | 316 | unsigned long ps_offs, |
27d5bf2a | 317 | unsigned long ps_size) |
6df10a82 | 318 | { |
6df10a82 | 319 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 320 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
eebead5b | 321 | int ret = 0; |
6df10a82 | 322 | |
b1e2270f | 323 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 324 | |
27d5bf2a | 325 | if (offset >= ps_size) |
b1e2270f | 326 | return VM_FAULT_SIGBUS; |
6df10a82 | 327 | |
60657263 JK |
328 | if (fatal_signal_pending(current)) |
329 | return VM_FAULT_SIGBUS; | |
330 | ||
d5883137 JK |
331 | /* |
332 | * Because we release the mmap_sem, the context may be destroyed while | |
333 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
334 | * in the meantime. | |
335 | */ | |
336 | get_spu_context(ctx); | |
337 | ||
33bfd7a7 AB |
338 | /* |
339 | * We have to wait for context to be loaded before we have | |
340 | * pages to hand out to the user, but we don't want to wait | |
341 | * with the mmap_sem held. | |
342 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 343 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 344 | * hanged. |
78bde53e | 345 | */ |
c9101bdb | 346 | if (spu_acquire(ctx)) |
d5883137 | 347 | goto refault; |
c9101bdb | 348 | |
33bfd7a7 AB |
349 | if (ctx->state == SPU_STATE_SAVED) { |
350 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 351 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
eebead5b | 352 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 353 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 354 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
355 | } else { |
356 | area = ctx->spu->problem_phys + ps_offs; | |
1a29d85e | 357 | vm_insert_pfn(vma, vmf->address, (area + offset) >> PAGE_SHIFT); |
b1e2270f | 358 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); |
33bfd7a7 | 359 | } |
6df10a82 | 360 | |
eebead5b CH |
361 | if (!ret) |
362 | spu_release(ctx); | |
d5883137 JK |
363 | |
364 | refault: | |
365 | put_spu_context(ctx); | |
b1e2270f | 366 | return VM_FAULT_NOPAGE; |
6df10a82 MN |
367 | } |
368 | ||
27d5bf2a | 369 | #if SPUFS_MMAP_4K |
b1e2270f NP |
370 | static int spufs_cntl_mmap_fault(struct vm_area_struct *vma, |
371 | struct vm_fault *vmf) | |
6df10a82 | 372 | { |
87ff6090 | 373 | return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
374 | } |
375 | ||
f0f37e2f | 376 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 377 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
378 | }; |
379 | ||
380 | /* | |
381 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
382 | */ |
383 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
384 | { | |
385 | if (!(vma->vm_flags & VM_SHARED)) | |
386 | return -EINVAL; | |
387 | ||
78bde53e | 388 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 389 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
390 | |
391 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
392 | return 0; | |
393 | } | |
27d5bf2a BH |
394 | #else /* SPUFS_MMAP_4K */ |
395 | #define spufs_cntl_mmap NULL | |
396 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 397 | |
197b1a82 | 398 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 399 | { |
e1dbff2b | 400 | struct spu_context *ctx = data; |
c9101bdb | 401 | int ret; |
6df10a82 | 402 | |
c9101bdb CH |
403 | ret = spu_acquire(ctx); |
404 | if (ret) | |
405 | return ret; | |
197b1a82 | 406 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
407 | spu_release(ctx); |
408 | ||
197b1a82 | 409 | return 0; |
6df10a82 MN |
410 | } |
411 | ||
197b1a82 | 412 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 413 | { |
e1dbff2b | 414 | struct spu_context *ctx = data; |
c9101bdb | 415 | int ret; |
e1dbff2b | 416 | |
c9101bdb CH |
417 | ret = spu_acquire(ctx); |
418 | if (ret) | |
419 | return ret; | |
e1dbff2b AB |
420 | ctx->ops->runcntl_write(ctx, val); |
421 | spu_release(ctx); | |
197b1a82 CH |
422 | |
423 | return 0; | |
6df10a82 MN |
424 | } |
425 | ||
e1dbff2b | 426 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 427 | { |
e1dbff2b AB |
428 | struct spufs_inode_info *i = SPUFS_I(inode); |
429 | struct spu_context *ctx = i->i_ctx; | |
430 | ||
47d3a5fa | 431 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 432 | file->private_data = ctx; |
43c2bbd9 CH |
433 | if (!i->i_openers++) |
434 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 435 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 436 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 437 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
438 | } |
439 | ||
43c2bbd9 CH |
440 | static int |
441 | spufs_cntl_release(struct inode *inode, struct file *file) | |
442 | { | |
443 | struct spufs_inode_info *i = SPUFS_I(inode); | |
444 | struct spu_context *ctx = i->i_ctx; | |
445 | ||
74bedc4d | 446 | simple_attr_release(inode, file); |
43c2bbd9 | 447 | |
47d3a5fa | 448 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
449 | if (!--i->i_openers) |
450 | ctx->cntl = NULL; | |
47d3a5fa | 451 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
452 | return 0; |
453 | } | |
454 | ||
5dfe4c96 | 455 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 456 | .open = spufs_cntl_open, |
43c2bbd9 | 457 | .release = spufs_cntl_release, |
8b88b099 CH |
458 | .read = simple_attr_read, |
459 | .write = simple_attr_write, | |
fc15351d | 460 | .llseek = generic_file_llseek, |
6df10a82 | 461 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
462 | }; |
463 | ||
8b3d6663 AB |
464 | static int |
465 | spufs_regs_open(struct inode *inode, struct file *file) | |
466 | { | |
467 | struct spufs_inode_info *i = SPUFS_I(inode); | |
468 | file->private_data = i->i_ctx; | |
469 | return 0; | |
470 | } | |
471 | ||
bf1ab978 DGM |
472 | static ssize_t |
473 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
474 | size_t size, loff_t *pos) | |
475 | { | |
476 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
477 | return simple_read_from_buffer(buffer, size, pos, | |
478 | lscsa->gprs, sizeof lscsa->gprs); | |
479 | } | |
480 | ||
8b3d6663 AB |
481 | static ssize_t |
482 | spufs_regs_read(struct file *file, char __user *buffer, | |
483 | size_t size, loff_t *pos) | |
484 | { | |
8b3d6663 | 485 | int ret; |
bf1ab978 | 486 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 487 | |
f027faa2 JK |
488 | /* pre-check for file position: if we'd return EOF, there's no point |
489 | * causing a deschedule */ | |
490 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
491 | return 0; | |
492 | ||
c9101bdb CH |
493 | ret = spu_acquire_saved(ctx); |
494 | if (ret) | |
495 | return ret; | |
bf1ab978 | 496 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 497 | spu_release_saved(ctx); |
8b3d6663 AB |
498 | return ret; |
499 | } | |
500 | ||
501 | static ssize_t | |
502 | spufs_regs_write(struct file *file, const char __user *buffer, | |
503 | size_t size, loff_t *pos) | |
504 | { | |
505 | struct spu_context *ctx = file->private_data; | |
506 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
507 | int ret; | |
508 | ||
d219889b | 509 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 510 | return -EFBIG; |
d219889b | 511 | |
c9101bdb CH |
512 | ret = spu_acquire_saved(ctx); |
513 | if (ret) | |
514 | return ret; | |
8b3d6663 | 515 | |
63c3b9d7 AM |
516 | size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, |
517 | buffer, size); | |
8b3d6663 | 518 | |
27b1ea09 | 519 | spu_release_saved(ctx); |
63c3b9d7 | 520 | return size; |
8b3d6663 AB |
521 | } |
522 | ||
5dfe4c96 | 523 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
524 | .open = spufs_regs_open, |
525 | .read = spufs_regs_read, | |
526 | .write = spufs_regs_write, | |
67207b96 AB |
527 | .llseek = generic_file_llseek, |
528 | }; | |
529 | ||
bf1ab978 DGM |
530 | static ssize_t |
531 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
532 | size_t size, loff_t * pos) | |
533 | { | |
534 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
535 | return simple_read_from_buffer(buffer, size, pos, | |
536 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
537 | } | |
538 | ||
8b3d6663 AB |
539 | static ssize_t |
540 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
541 | size_t size, loff_t * pos) | |
542 | { | |
8b3d6663 | 543 | int ret; |
bf1ab978 | 544 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 545 | |
c9101bdb CH |
546 | ret = spu_acquire_saved(ctx); |
547 | if (ret) | |
548 | return ret; | |
bf1ab978 | 549 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 550 | spu_release_saved(ctx); |
8b3d6663 AB |
551 | return ret; |
552 | } | |
553 | ||
554 | static ssize_t | |
555 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
556 | size_t size, loff_t * pos) | |
557 | { | |
558 | struct spu_context *ctx = file->private_data; | |
559 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
560 | int ret; | |
561 | ||
d219889b | 562 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 563 | return -EFBIG; |
8b3d6663 | 564 | |
c9101bdb CH |
565 | ret = spu_acquire_saved(ctx); |
566 | if (ret) | |
567 | return ret; | |
8b3d6663 | 568 | |
63c3b9d7 AM |
569 | size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, |
570 | buffer, size); | |
8b3d6663 | 571 | |
27b1ea09 | 572 | spu_release_saved(ctx); |
63c3b9d7 | 573 | return size; |
8b3d6663 AB |
574 | } |
575 | ||
5dfe4c96 | 576 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
577 | .open = spufs_regs_open, |
578 | .read = spufs_fpcr_read, | |
579 | .write = spufs_fpcr_write, | |
580 | .llseek = generic_file_llseek, | |
581 | }; | |
582 | ||
67207b96 AB |
583 | /* generic open function for all pipe-like files */ |
584 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
585 | { | |
586 | struct spufs_inode_info *i = SPUFS_I(inode); | |
587 | file->private_data = i->i_ctx; | |
588 | ||
589 | return nonseekable_open(inode, file); | |
590 | } | |
591 | ||
cdcc89bb AB |
592 | /* |
593 | * Read as many bytes from the mailbox as possible, until | |
594 | * one of the conditions becomes true: | |
595 | * | |
596 | * - no more data available in the mailbox | |
597 | * - end of the user provided buffer | |
598 | * - end of the mapped area | |
599 | */ | |
67207b96 AB |
600 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
601 | size_t len, loff_t *pos) | |
602 | { | |
8b3d6663 | 603 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
604 | u32 mbox_data, __user *udata; |
605 | ssize_t count; | |
67207b96 AB |
606 | |
607 | if (len < 4) | |
608 | return -EINVAL; | |
609 | ||
cdcc89bb AB |
610 | if (!access_ok(VERIFY_WRITE, buf, len)) |
611 | return -EFAULT; | |
612 | ||
613 | udata = (void __user *)buf; | |
614 | ||
c9101bdb CH |
615 | count = spu_acquire(ctx); |
616 | if (count) | |
617 | return count; | |
618 | ||
274cef5e | 619 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
620 | int ret; |
621 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
622 | if (ret == 0) | |
623 | break; | |
624 | ||
625 | /* | |
626 | * at the end of the mapped area, we can fault | |
627 | * but still need to return the data we have | |
628 | * read successfully so far. | |
629 | */ | |
630 | ret = __put_user(mbox_data, udata); | |
631 | if (ret) { | |
632 | if (!count) | |
633 | count = -EFAULT; | |
634 | break; | |
635 | } | |
636 | } | |
8b3d6663 | 637 | spu_release(ctx); |
67207b96 | 638 | |
cdcc89bb AB |
639 | if (!count) |
640 | count = -EAGAIN; | |
67207b96 | 641 | |
cdcc89bb | 642 | return count; |
67207b96 AB |
643 | } |
644 | ||
5dfe4c96 | 645 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
646 | .open = spufs_pipe_open, |
647 | .read = spufs_mbox_read, | |
fc15351d | 648 | .llseek = no_llseek, |
67207b96 AB |
649 | }; |
650 | ||
651 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
652 | size_t len, loff_t *pos) | |
653 | { | |
8b3d6663 | 654 | struct spu_context *ctx = file->private_data; |
c9101bdb | 655 | ssize_t ret; |
67207b96 AB |
656 | u32 mbox_stat; |
657 | ||
658 | if (len < 4) | |
659 | return -EINVAL; | |
660 | ||
c9101bdb CH |
661 | ret = spu_acquire(ctx); |
662 | if (ret) | |
663 | return ret; | |
8b3d6663 AB |
664 | |
665 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
666 | ||
667 | spu_release(ctx); | |
67207b96 AB |
668 | |
669 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
670 | return -EFAULT; | |
671 | ||
672 | return 4; | |
673 | } | |
674 | ||
5dfe4c96 | 675 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
676 | .open = spufs_pipe_open, |
677 | .read = spufs_mbox_stat_read, | |
fc15351d | 678 | .llseek = no_llseek, |
67207b96 AB |
679 | }; |
680 | ||
681 | /* low-level ibox access function */ | |
8b3d6663 | 682 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 683 | { |
8b3d6663 AB |
684 | return ctx->ops->ibox_read(ctx, data); |
685 | } | |
67207b96 | 686 | |
8b3d6663 AB |
687 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
688 | { | |
689 | struct spu_context *ctx = file->private_data; | |
67207b96 | 690 | |
8b3d6663 | 691 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 692 | } |
67207b96 | 693 | |
8b3d6663 AB |
694 | /* interrupt-level ibox callback function. */ |
695 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 696 | { |
8b3d6663 AB |
697 | struct spu_context *ctx = spu->ctx; |
698 | ||
e65c2f6f LB |
699 | if (!ctx) |
700 | return; | |
701 | ||
8b3d6663 AB |
702 | wake_up_all(&ctx->ibox_wq); |
703 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
704 | } |
705 | ||
cdcc89bb AB |
706 | /* |
707 | * Read as many bytes from the interrupt mailbox as possible, until | |
708 | * one of the conditions becomes true: | |
709 | * | |
710 | * - no more data available in the mailbox | |
711 | * - end of the user provided buffer | |
712 | * - end of the mapped area | |
713 | * | |
714 | * If the file is opened without O_NONBLOCK, we wait here until | |
715 | * any data is available, but return when we have been able to | |
716 | * read something. | |
717 | */ | |
67207b96 AB |
718 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
719 | size_t len, loff_t *pos) | |
720 | { | |
8b3d6663 | 721 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
722 | u32 ibox_data, __user *udata; |
723 | ssize_t count; | |
67207b96 AB |
724 | |
725 | if (len < 4) | |
726 | return -EINVAL; | |
727 | ||
cdcc89bb AB |
728 | if (!access_ok(VERIFY_WRITE, buf, len)) |
729 | return -EFAULT; | |
730 | ||
731 | udata = (void __user *)buf; | |
732 | ||
c9101bdb CH |
733 | count = spu_acquire(ctx); |
734 | if (count) | |
eebead5b | 735 | goto out; |
67207b96 | 736 | |
cdcc89bb AB |
737 | /* wait only for the first element */ |
738 | count = 0; | |
67207b96 | 739 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 740 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 741 | count = -EAGAIN; |
eebead5b CH |
742 | goto out_unlock; |
743 | } | |
67207b96 | 744 | } else { |
cdcc89bb | 745 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
746 | if (count) |
747 | goto out; | |
67207b96 AB |
748 | } |
749 | ||
cdcc89bb AB |
750 | /* if we can't write at all, return -EFAULT */ |
751 | count = __put_user(ibox_data, udata); | |
752 | if (count) | |
eebead5b | 753 | goto out_unlock; |
8b3d6663 | 754 | |
cdcc89bb AB |
755 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
756 | int ret; | |
757 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
758 | if (ret == 0) | |
759 | break; | |
760 | /* | |
761 | * at the end of the mapped area, we can fault | |
762 | * but still need to return the data we have | |
763 | * read successfully so far. | |
764 | */ | |
765 | ret = __put_user(ibox_data, udata); | |
766 | if (ret) | |
767 | break; | |
768 | } | |
67207b96 | 769 | |
eebead5b | 770 | out_unlock: |
cdcc89bb | 771 | spu_release(ctx); |
eebead5b | 772 | out: |
cdcc89bb | 773 | return count; |
67207b96 AB |
774 | } |
775 | ||
776 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
777 | { | |
8b3d6663 | 778 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
779 | unsigned int mask; |
780 | ||
8b3d6663 | 781 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 782 | |
c9101bdb CH |
783 | /* |
784 | * For now keep this uninterruptible and also ignore the rule | |
785 | * that poll should not sleep. Will be fixed later. | |
786 | */ | |
787 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
788 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
789 | spu_release(ctx); | |
67207b96 AB |
790 | |
791 | return mask; | |
792 | } | |
793 | ||
5dfe4c96 | 794 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
795 | .open = spufs_pipe_open, |
796 | .read = spufs_ibox_read, | |
797 | .poll = spufs_ibox_poll, | |
798 | .fasync = spufs_ibox_fasync, | |
fc15351d | 799 | .llseek = no_llseek, |
67207b96 AB |
800 | }; |
801 | ||
802 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
803 | size_t len, loff_t *pos) | |
804 | { | |
8b3d6663 | 805 | struct spu_context *ctx = file->private_data; |
c9101bdb | 806 | ssize_t ret; |
67207b96 AB |
807 | u32 ibox_stat; |
808 | ||
809 | if (len < 4) | |
810 | return -EINVAL; | |
811 | ||
c9101bdb CH |
812 | ret = spu_acquire(ctx); |
813 | if (ret) | |
814 | return ret; | |
8b3d6663 AB |
815 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
816 | spu_release(ctx); | |
67207b96 AB |
817 | |
818 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
819 | return -EFAULT; | |
820 | ||
821 | return 4; | |
822 | } | |
823 | ||
5dfe4c96 | 824 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
825 | .open = spufs_pipe_open, |
826 | .read = spufs_ibox_stat_read, | |
fc15351d | 827 | .llseek = no_llseek, |
67207b96 AB |
828 | }; |
829 | ||
830 | /* low-level mailbox write */ | |
8b3d6663 | 831 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 832 | { |
8b3d6663 AB |
833 | return ctx->ops->wbox_write(ctx, data); |
834 | } | |
67207b96 | 835 | |
8b3d6663 AB |
836 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
837 | { | |
838 | struct spu_context *ctx = file->private_data; | |
839 | int ret; | |
67207b96 | 840 | |
8b3d6663 | 841 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 842 | |
67207b96 AB |
843 | return ret; |
844 | } | |
67207b96 | 845 | |
8b3d6663 AB |
846 | /* interrupt-level wbox callback function. */ |
847 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 848 | { |
8b3d6663 AB |
849 | struct spu_context *ctx = spu->ctx; |
850 | ||
e65c2f6f LB |
851 | if (!ctx) |
852 | return; | |
853 | ||
8b3d6663 AB |
854 | wake_up_all(&ctx->wbox_wq); |
855 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
856 | } |
857 | ||
cdcc89bb AB |
858 | /* |
859 | * Write as many bytes to the interrupt mailbox as possible, until | |
860 | * one of the conditions becomes true: | |
861 | * | |
862 | * - the mailbox is full | |
863 | * - end of the user provided buffer | |
864 | * - end of the mapped area | |
865 | * | |
866 | * If the file is opened without O_NONBLOCK, we wait here until | |
027dfac6 | 867 | * space is available, but return when we have been able to |
cdcc89bb AB |
868 | * write something. |
869 | */ | |
67207b96 AB |
870 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
871 | size_t len, loff_t *pos) | |
872 | { | |
8b3d6663 | 873 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
874 | u32 wbox_data, __user *udata; |
875 | ssize_t count; | |
67207b96 AB |
876 | |
877 | if (len < 4) | |
878 | return -EINVAL; | |
879 | ||
cdcc89bb AB |
880 | udata = (void __user *)buf; |
881 | if (!access_ok(VERIFY_READ, buf, len)) | |
882 | return -EFAULT; | |
883 | ||
884 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
885 | return -EFAULT; |
886 | ||
c9101bdb CH |
887 | count = spu_acquire(ctx); |
888 | if (count) | |
eebead5b | 889 | goto out; |
8b3d6663 | 890 | |
cdcc89bb AB |
891 | /* |
892 | * make sure we can at least write one element, by waiting | |
893 | * in case of !O_NONBLOCK | |
894 | */ | |
895 | count = 0; | |
67207b96 | 896 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 897 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 898 | count = -EAGAIN; |
eebead5b CH |
899 | goto out_unlock; |
900 | } | |
67207b96 | 901 | } else { |
cdcc89bb | 902 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
903 | if (count) |
904 | goto out; | |
67207b96 AB |
905 | } |
906 | ||
8b3d6663 | 907 | |
96de0e25 | 908 | /* write as much as possible */ |
cdcc89bb AB |
909 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
910 | int ret; | |
911 | ret = __get_user(wbox_data, udata); | |
912 | if (ret) | |
913 | break; | |
914 | ||
915 | ret = spu_wbox_write(ctx, wbox_data); | |
916 | if (ret == 0) | |
917 | break; | |
918 | } | |
919 | ||
eebead5b | 920 | out_unlock: |
cdcc89bb | 921 | spu_release(ctx); |
eebead5b | 922 | out: |
cdcc89bb | 923 | return count; |
67207b96 AB |
924 | } |
925 | ||
926 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
927 | { | |
8b3d6663 | 928 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
929 | unsigned int mask; |
930 | ||
8b3d6663 | 931 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 932 | |
c9101bdb CH |
933 | /* |
934 | * For now keep this uninterruptible and also ignore the rule | |
935 | * that poll should not sleep. Will be fixed later. | |
936 | */ | |
937 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
938 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
939 | spu_release(ctx); | |
67207b96 AB |
940 | |
941 | return mask; | |
942 | } | |
943 | ||
5dfe4c96 | 944 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
945 | .open = spufs_pipe_open, |
946 | .write = spufs_wbox_write, | |
947 | .poll = spufs_wbox_poll, | |
948 | .fasync = spufs_wbox_fasync, | |
fc15351d | 949 | .llseek = no_llseek, |
67207b96 AB |
950 | }; |
951 | ||
952 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
953 | size_t len, loff_t *pos) | |
954 | { | |
8b3d6663 | 955 | struct spu_context *ctx = file->private_data; |
c9101bdb | 956 | ssize_t ret; |
67207b96 AB |
957 | u32 wbox_stat; |
958 | ||
959 | if (len < 4) | |
960 | return -EINVAL; | |
961 | ||
c9101bdb CH |
962 | ret = spu_acquire(ctx); |
963 | if (ret) | |
964 | return ret; | |
8b3d6663 AB |
965 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
966 | spu_release(ctx); | |
67207b96 AB |
967 | |
968 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
969 | return -EFAULT; | |
970 | ||
971 | return 4; | |
972 | } | |
973 | ||
5dfe4c96 | 974 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
975 | .open = spufs_pipe_open, |
976 | .read = spufs_wbox_stat_read, | |
fc15351d | 977 | .llseek = no_llseek, |
67207b96 AB |
978 | }; |
979 | ||
6df10a82 MN |
980 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
981 | { | |
982 | struct spufs_inode_info *i = SPUFS_I(inode); | |
983 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 984 | |
47d3a5fa | 985 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 986 | file->private_data = ctx; |
43c2bbd9 CH |
987 | if (!i->i_openers++) |
988 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 989 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
990 | return nonseekable_open(inode, file); |
991 | } | |
992 | ||
43c2bbd9 CH |
993 | static int |
994 | spufs_signal1_release(struct inode *inode, struct file *file) | |
995 | { | |
996 | struct spufs_inode_info *i = SPUFS_I(inode); | |
997 | struct spu_context *ctx = i->i_ctx; | |
998 | ||
47d3a5fa | 999 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1000 | if (!--i->i_openers) |
1001 | ctx->signal1 = NULL; | |
47d3a5fa | 1002 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1003 | return 0; |
1004 | } | |
1005 | ||
bf1ab978 | 1006 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1007 | size_t len, loff_t *pos) |
1008 | { | |
17f88ceb | 1009 | int ret = 0; |
67207b96 AB |
1010 | u32 data; |
1011 | ||
67207b96 AB |
1012 | if (len < 4) |
1013 | return -EINVAL; | |
1014 | ||
17f88ceb DGM |
1015 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1016 | data = ctx->csa.spu_chnldata_RW[3]; | |
1017 | ret = 4; | |
1018 | } | |
8b3d6663 | 1019 | |
17f88ceb DGM |
1020 | if (!ret) |
1021 | goto out; | |
1022 | ||
67207b96 AB |
1023 | if (copy_to_user(buf, &data, 4)) |
1024 | return -EFAULT; | |
1025 | ||
17f88ceb DGM |
1026 | out: |
1027 | return ret; | |
67207b96 AB |
1028 | } |
1029 | ||
bf1ab978 DGM |
1030 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1031 | size_t len, loff_t *pos) | |
1032 | { | |
1033 | int ret; | |
1034 | struct spu_context *ctx = file->private_data; | |
1035 | ||
c9101bdb CH |
1036 | ret = spu_acquire_saved(ctx); |
1037 | if (ret) | |
1038 | return ret; | |
bf1ab978 | 1039 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1040 | spu_release_saved(ctx); |
bf1ab978 DGM |
1041 | |
1042 | return ret; | |
1043 | } | |
1044 | ||
67207b96 AB |
1045 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1046 | size_t len, loff_t *pos) | |
1047 | { | |
1048 | struct spu_context *ctx; | |
c9101bdb | 1049 | ssize_t ret; |
67207b96 AB |
1050 | u32 data; |
1051 | ||
1052 | ctx = file->private_data; | |
67207b96 AB |
1053 | |
1054 | if (len < 4) | |
1055 | return -EINVAL; | |
1056 | ||
1057 | if (copy_from_user(&data, buf, 4)) | |
1058 | return -EFAULT; | |
1059 | ||
c9101bdb CH |
1060 | ret = spu_acquire(ctx); |
1061 | if (ret) | |
1062 | return ret; | |
8b3d6663 AB |
1063 | ctx->ops->signal1_write(ctx, data); |
1064 | spu_release(ctx); | |
67207b96 AB |
1065 | |
1066 | return 4; | |
1067 | } | |
1068 | ||
b1e2270f NP |
1069 | static int |
1070 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1071 | { |
87ff6090 JK |
1072 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1073 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1074 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1075 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1076 | * signal 1 and 2 area | |
1077 | */ | |
87ff6090 | 1078 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1079 | #else |
1080 | #error unsupported page size | |
1081 | #endif | |
6df10a82 MN |
1082 | } |
1083 | ||
f0f37e2f | 1084 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1085 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1086 | }; |
1087 | ||
1088 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1089 | { | |
1090 | if (!(vma->vm_flags & VM_SHARED)) | |
1091 | return -EINVAL; | |
1092 | ||
78bde53e | 1093 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1094 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1095 | |
1096 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1097 | return 0; | |
1098 | } | |
6df10a82 | 1099 | |
5dfe4c96 | 1100 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1101 | .open = spufs_signal1_open, |
43c2bbd9 | 1102 | .release = spufs_signal1_release, |
67207b96 AB |
1103 | .read = spufs_signal1_read, |
1104 | .write = spufs_signal1_write, | |
6df10a82 | 1105 | .mmap = spufs_signal1_mmap, |
fc15351d | 1106 | .llseek = no_llseek, |
67207b96 AB |
1107 | }; |
1108 | ||
d054b36f JK |
1109 | static const struct file_operations spufs_signal1_nosched_fops = { |
1110 | .open = spufs_signal1_open, | |
1111 | .release = spufs_signal1_release, | |
1112 | .write = spufs_signal1_write, | |
1113 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1114 | .llseek = no_llseek, |
d054b36f JK |
1115 | }; |
1116 | ||
6df10a82 MN |
1117 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1118 | { | |
1119 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1120 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1121 | |
47d3a5fa | 1122 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1123 | file->private_data = ctx; |
43c2bbd9 CH |
1124 | if (!i->i_openers++) |
1125 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1126 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1127 | return nonseekable_open(inode, file); |
1128 | } | |
1129 | ||
43c2bbd9 CH |
1130 | static int |
1131 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1132 | { | |
1133 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1134 | struct spu_context *ctx = i->i_ctx; | |
1135 | ||
47d3a5fa | 1136 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1137 | if (!--i->i_openers) |
1138 | ctx->signal2 = NULL; | |
47d3a5fa | 1139 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1140 | return 0; |
1141 | } | |
1142 | ||
bf1ab978 | 1143 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1144 | size_t len, loff_t *pos) |
1145 | { | |
17f88ceb | 1146 | int ret = 0; |
67207b96 AB |
1147 | u32 data; |
1148 | ||
67207b96 AB |
1149 | if (len < 4) |
1150 | return -EINVAL; | |
1151 | ||
17f88ceb DGM |
1152 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1153 | data = ctx->csa.spu_chnldata_RW[4]; | |
1154 | ret = 4; | |
1155 | } | |
8b3d6663 | 1156 | |
17f88ceb DGM |
1157 | if (!ret) |
1158 | goto out; | |
1159 | ||
67207b96 AB |
1160 | if (copy_to_user(buf, &data, 4)) |
1161 | return -EFAULT; | |
1162 | ||
17f88ceb | 1163 | out: |
bf1ab978 DGM |
1164 | return ret; |
1165 | } | |
1166 | ||
1167 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1168 | size_t len, loff_t *pos) | |
1169 | { | |
1170 | struct spu_context *ctx = file->private_data; | |
1171 | int ret; | |
1172 | ||
c9101bdb CH |
1173 | ret = spu_acquire_saved(ctx); |
1174 | if (ret) | |
1175 | return ret; | |
bf1ab978 | 1176 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1177 | spu_release_saved(ctx); |
bf1ab978 DGM |
1178 | |
1179 | return ret; | |
67207b96 AB |
1180 | } |
1181 | ||
1182 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1183 | size_t len, loff_t *pos) | |
1184 | { | |
1185 | struct spu_context *ctx; | |
c9101bdb | 1186 | ssize_t ret; |
67207b96 AB |
1187 | u32 data; |
1188 | ||
1189 | ctx = file->private_data; | |
67207b96 AB |
1190 | |
1191 | if (len < 4) | |
1192 | return -EINVAL; | |
1193 | ||
1194 | if (copy_from_user(&data, buf, 4)) | |
1195 | return -EFAULT; | |
1196 | ||
c9101bdb CH |
1197 | ret = spu_acquire(ctx); |
1198 | if (ret) | |
1199 | return ret; | |
8b3d6663 AB |
1200 | ctx->ops->signal2_write(ctx, data); |
1201 | spu_release(ctx); | |
67207b96 AB |
1202 | |
1203 | return 4; | |
1204 | } | |
1205 | ||
27d5bf2a | 1206 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1207 | static int |
1208 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1209 | { |
87ff6090 JK |
1210 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1211 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1212 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1213 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1214 | * signal 1 and 2 area | |
1215 | */ | |
87ff6090 | 1216 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1217 | #else |
1218 | #error unsupported page size | |
1219 | #endif | |
6df10a82 MN |
1220 | } |
1221 | ||
f0f37e2f | 1222 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1223 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1224 | }; |
1225 | ||
1226 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1227 | { | |
1228 | if (!(vma->vm_flags & VM_SHARED)) | |
1229 | return -EINVAL; | |
1230 | ||
78bde53e | 1231 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1232 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1233 | |
1234 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1235 | return 0; | |
1236 | } | |
27d5bf2a BH |
1237 | #else /* SPUFS_MMAP_4K */ |
1238 | #define spufs_signal2_mmap NULL | |
1239 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1240 | |
5dfe4c96 | 1241 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1242 | .open = spufs_signal2_open, |
43c2bbd9 | 1243 | .release = spufs_signal2_release, |
67207b96 AB |
1244 | .read = spufs_signal2_read, |
1245 | .write = spufs_signal2_write, | |
6df10a82 | 1246 | .mmap = spufs_signal2_mmap, |
fc15351d | 1247 | .llseek = no_llseek, |
67207b96 AB |
1248 | }; |
1249 | ||
d054b36f JK |
1250 | static const struct file_operations spufs_signal2_nosched_fops = { |
1251 | .open = spufs_signal2_open, | |
1252 | .release = spufs_signal2_release, | |
1253 | .write = spufs_signal2_write, | |
1254 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1255 | .llseek = no_llseek, |
d054b36f JK |
1256 | }; |
1257 | ||
104f0cc2 ME |
1258 | /* |
1259 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1260 | * work of acquiring (or not) the SPU context before calling through | |
1261 | * to the actual get routine. The set routine is called directly. | |
1262 | */ | |
1263 | #define SPU_ATTR_NOACQUIRE 0 | |
1264 | #define SPU_ATTR_ACQUIRE 1 | |
1265 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1266 | ||
1267 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1268 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1269 | { \ |
1270 | struct spu_context *ctx = data; \ | |
c9101bdb | 1271 | int ret = 0; \ |
104f0cc2 ME |
1272 | \ |
1273 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1274 | ret = spu_acquire(ctx); \ |
1275 | if (ret) \ | |
1276 | return ret; \ | |
197b1a82 | 1277 | *val = __get(ctx); \ |
104f0cc2 ME |
1278 | spu_release(ctx); \ |
1279 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1280 | ret = spu_acquire_saved(ctx); \ |
1281 | if (ret) \ | |
1282 | return ret; \ | |
197b1a82 | 1283 | *val = __get(ctx); \ |
104f0cc2 ME |
1284 | spu_release_saved(ctx); \ |
1285 | } else \ | |
197b1a82 | 1286 | *val = __get(ctx); \ |
104f0cc2 | 1287 | \ |
197b1a82 | 1288 | return 0; \ |
104f0cc2 | 1289 | } \ |
197b1a82 | 1290 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1291 | |
197b1a82 | 1292 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1293 | { |
1294 | struct spu_context *ctx = data; | |
c9101bdb | 1295 | int ret; |
67207b96 | 1296 | |
c9101bdb CH |
1297 | ret = spu_acquire(ctx); |
1298 | if (ret) | |
1299 | return ret; | |
8b3d6663 AB |
1300 | ctx->ops->signal1_type_set(ctx, val); |
1301 | spu_release(ctx); | |
197b1a82 CH |
1302 | |
1303 | return 0; | |
67207b96 AB |
1304 | } |
1305 | ||
104f0cc2 | 1306 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1307 | { |
bf1ab978 DGM |
1308 | return ctx->ops->signal1_type_get(ctx); |
1309 | } | |
104f0cc2 | 1310 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1311 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1312 | |
67207b96 | 1313 | |
197b1a82 | 1314 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1315 | { |
1316 | struct spu_context *ctx = data; | |
c9101bdb | 1317 | int ret; |
67207b96 | 1318 | |
c9101bdb CH |
1319 | ret = spu_acquire(ctx); |
1320 | if (ret) | |
1321 | return ret; | |
8b3d6663 AB |
1322 | ctx->ops->signal2_type_set(ctx, val); |
1323 | spu_release(ctx); | |
197b1a82 CH |
1324 | |
1325 | return 0; | |
67207b96 AB |
1326 | } |
1327 | ||
104f0cc2 | 1328 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1329 | { |
bf1ab978 DGM |
1330 | return ctx->ops->signal2_type_get(ctx); |
1331 | } | |
104f0cc2 | 1332 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1333 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1334 | |
27d5bf2a | 1335 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1336 | static int |
1337 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1338 | { |
87ff6090 | 1339 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b AB |
1340 | } |
1341 | ||
f0f37e2f | 1342 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1343 | .fault = spufs_mss_mmap_fault, |
d9379c4b AB |
1344 | }; |
1345 | ||
1346 | /* | |
1347 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1348 | */ |
1349 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1350 | { | |
1351 | if (!(vma->vm_flags & VM_SHARED)) | |
1352 | return -EINVAL; | |
1353 | ||
78bde53e | 1354 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1355 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b AB |
1356 | |
1357 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1358 | return 0; | |
1359 | } | |
27d5bf2a BH |
1360 | #else /* SPUFS_MMAP_4K */ |
1361 | #define spufs_mss_mmap NULL | |
1362 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1363 | |
1364 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1365 | { | |
1366 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1367 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1368 | |
1369 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1370 | |
47d3a5fa | 1371 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1372 | if (!i->i_openers++) |
1373 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1374 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1375 | return nonseekable_open(inode, file); |
1376 | } | |
1377 | ||
43c2bbd9 CH |
1378 | static int |
1379 | spufs_mss_release(struct inode *inode, struct file *file) | |
1380 | { | |
1381 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1382 | struct spu_context *ctx = i->i_ctx; | |
1383 | ||
47d3a5fa | 1384 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1385 | if (!--i->i_openers) |
1386 | ctx->mss = NULL; | |
47d3a5fa | 1387 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1388 | return 0; |
1389 | } | |
1390 | ||
5dfe4c96 | 1391 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1392 | .open = spufs_mss_open, |
43c2bbd9 | 1393 | .release = spufs_mss_release, |
d9379c4b | 1394 | .mmap = spufs_mss_mmap, |
fc15351d | 1395 | .llseek = no_llseek, |
27d5bf2a BH |
1396 | }; |
1397 | ||
b1e2270f NP |
1398 | static int |
1399 | spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
27d5bf2a | 1400 | { |
87ff6090 | 1401 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1402 | } |
1403 | ||
f0f37e2f | 1404 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1405 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1406 | }; |
1407 | ||
1408 | /* | |
1409 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1410 | */ | |
1411 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1412 | { | |
1413 | if (!(vma->vm_flags & VM_SHARED)) | |
1414 | return -EINVAL; | |
1415 | ||
78bde53e | 1416 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1417 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1418 | |
1419 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1420 | return 0; | |
1421 | } | |
1422 | ||
1423 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1424 | { | |
1425 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1426 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1427 | |
47d3a5fa | 1428 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1429 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1430 | if (!i->i_openers++) |
1431 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1432 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1433 | return nonseekable_open(inode, file); |
1434 | } | |
1435 | ||
43c2bbd9 CH |
1436 | static int |
1437 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1438 | { | |
1439 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1440 | struct spu_context *ctx = i->i_ctx; | |
1441 | ||
47d3a5fa | 1442 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1443 | if (!--i->i_openers) |
1444 | ctx->psmap = NULL; | |
47d3a5fa | 1445 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1446 | return 0; |
1447 | } | |
1448 | ||
5dfe4c96 | 1449 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1450 | .open = spufs_psmap_open, |
43c2bbd9 | 1451 | .release = spufs_psmap_release, |
27d5bf2a | 1452 | .mmap = spufs_psmap_mmap, |
fc15351d | 1453 | .llseek = no_llseek, |
d9379c4b AB |
1454 | }; |
1455 | ||
1456 | ||
27d5bf2a | 1457 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1458 | static int |
1459 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1460 | { |
87ff6090 | 1461 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1462 | } |
1463 | ||
f0f37e2f | 1464 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1465 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1466 | }; |
1467 | ||
1468 | /* | |
1469 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1470 | */ |
1471 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1472 | { | |
1473 | if (!(vma->vm_flags & VM_SHARED)) | |
1474 | return -EINVAL; | |
1475 | ||
78bde53e | 1476 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1477 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1478 | |
1479 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1480 | return 0; | |
1481 | } | |
27d5bf2a BH |
1482 | #else /* SPUFS_MMAP_4K */ |
1483 | #define spufs_mfc_mmap NULL | |
1484 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1485 | |
1486 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1487 | { | |
1488 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1489 | struct spu_context *ctx = i->i_ctx; | |
1490 | ||
1491 | /* we don't want to deal with DMA into other processes */ | |
1492 | if (ctx->owner != current->mm) | |
1493 | return -EINVAL; | |
1494 | ||
1495 | if (atomic_read(&inode->i_count) != 1) | |
1496 | return -EBUSY; | |
1497 | ||
47d3a5fa | 1498 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1499 | file->private_data = ctx; |
43c2bbd9 CH |
1500 | if (!i->i_openers++) |
1501 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1502 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1503 | return nonseekable_open(inode, file); |
1504 | } | |
1505 | ||
43c2bbd9 CH |
1506 | static int |
1507 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1508 | { | |
1509 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1510 | struct spu_context *ctx = i->i_ctx; | |
1511 | ||
47d3a5fa | 1512 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1513 | if (!--i->i_openers) |
1514 | ctx->mfc = NULL; | |
47d3a5fa | 1515 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1516 | return 0; |
1517 | } | |
1518 | ||
a33a7d73 AB |
1519 | /* interrupt-level mfc callback function. */ |
1520 | void spufs_mfc_callback(struct spu *spu) | |
1521 | { | |
1522 | struct spu_context *ctx = spu->ctx; | |
1523 | ||
e65c2f6f LB |
1524 | if (!ctx) |
1525 | return; | |
1526 | ||
a33a7d73 AB |
1527 | wake_up_all(&ctx->mfc_wq); |
1528 | ||
e48b1b45 | 1529 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1530 | if (ctx->mfc_fasync) { |
1531 | u32 free_elements, tagstatus; | |
1532 | unsigned int mask; | |
1533 | ||
1534 | /* no need for spu_acquire in interrupt context */ | |
1535 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1536 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1537 | ||
1538 | mask = 0; | |
1539 | if (free_elements & 0xffff) | |
1540 | mask |= POLLOUT; | |
1541 | if (tagstatus & ctx->tagwait) | |
1542 | mask |= POLLIN; | |
1543 | ||
1544 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1549 | { | |
1550 | /* See if there is one tag group is complete */ | |
1551 | /* FIXME we need locking around tagwait */ | |
1552 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1553 | ctx->tagwait &= ~*status; | |
1554 | if (*status) | |
1555 | return 1; | |
1556 | ||
1557 | /* enable interrupt waiting for any tag group, | |
1558 | may silently fail if interrupts are already enabled */ | |
1559 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1564 | size_t size, loff_t *pos) | |
1565 | { | |
1566 | struct spu_context *ctx = file->private_data; | |
1567 | int ret = -EINVAL; | |
1568 | u32 status; | |
1569 | ||
1570 | if (size != 4) | |
1571 | goto out; | |
1572 | ||
c9101bdb CH |
1573 | ret = spu_acquire(ctx); |
1574 | if (ret) | |
1575 | return ret; | |
1576 | ||
1577 | ret = -EINVAL; | |
a33a7d73 AB |
1578 | if (file->f_flags & O_NONBLOCK) { |
1579 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1580 | if (!(status & ctx->tagwait)) | |
1581 | ret = -EAGAIN; | |
1582 | else | |
c9101bdb | 1583 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1584 | ctx->tagwait &= ~status; |
1585 | } else { | |
1586 | ret = spufs_wait(ctx->mfc_wq, | |
1587 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1588 | if (ret) |
1589 | goto out; | |
a33a7d73 AB |
1590 | } |
1591 | spu_release(ctx); | |
1592 | ||
a33a7d73 AB |
1593 | ret = 4; |
1594 | if (copy_to_user(buffer, &status, 4)) | |
1595 | ret = -EFAULT; | |
1596 | ||
1597 | out: | |
1598 | return ret; | |
1599 | } | |
1600 | ||
1601 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1602 | { | |
9477e455 | 1603 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1604 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1605 | ||
1606 | switch (cmd->cmd) { | |
1607 | case MFC_PUT_CMD: | |
1608 | case MFC_PUTF_CMD: | |
1609 | case MFC_PUTB_CMD: | |
1610 | case MFC_GET_CMD: | |
1611 | case MFC_GETF_CMD: | |
1612 | case MFC_GETB_CMD: | |
1613 | break; | |
1614 | default: | |
1615 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1616 | return -EIO; | |
1617 | } | |
1618 | ||
1619 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1620 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1621 | cmd->ea, cmd->lsa); |
1622 | return -EIO; | |
1623 | } | |
1624 | ||
1625 | switch (cmd->size & 0xf) { | |
1626 | case 1: | |
1627 | break; | |
1628 | case 2: | |
1629 | if (cmd->lsa & 1) | |
1630 | goto error; | |
1631 | break; | |
1632 | case 4: | |
1633 | if (cmd->lsa & 3) | |
1634 | goto error; | |
1635 | break; | |
1636 | case 8: | |
1637 | if (cmd->lsa & 7) | |
1638 | goto error; | |
1639 | break; | |
1640 | case 0: | |
1641 | if (cmd->lsa & 15) | |
1642 | goto error; | |
1643 | break; | |
1644 | error: | |
1645 | default: | |
1646 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1647 | cmd->lsa & 0xf, cmd->size); | |
1648 | return -EIO; | |
1649 | } | |
1650 | ||
1651 | if (cmd->size > 16 * 1024) { | |
1652 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1653 | return -EIO; | |
1654 | } | |
1655 | ||
1656 | if (cmd->tag & 0xfff0) { | |
1657 | /* we reserve the higher tag numbers for kernel use */ | |
1658 | pr_debug("invalid DMA tag\n"); | |
1659 | return -EIO; | |
1660 | } | |
1661 | ||
1662 | if (cmd->class) { | |
1663 | /* not supported in this version */ | |
1664 | pr_debug("invalid DMA class\n"); | |
1665 | return -EIO; | |
1666 | } | |
1667 | ||
1668 | return 0; | |
1669 | } | |
1670 | ||
1671 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1672 | struct mfc_dma_command cmd, | |
1673 | int *error) | |
1674 | { | |
1675 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1676 | if (*error == -EAGAIN) { | |
1677 | /* wait for any tag group to complete | |
1678 | so we have space for the new command */ | |
1679 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1680 | /* try again, because the queue might be | |
1681 | empty again */ | |
1682 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1683 | if (*error == -EAGAIN) | |
1684 | return 0; | |
1685 | } | |
1686 | return 1; | |
1687 | } | |
1688 | ||
1689 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1690 | size_t size, loff_t *pos) | |
1691 | { | |
1692 | struct spu_context *ctx = file->private_data; | |
1693 | struct mfc_dma_command cmd; | |
1694 | int ret = -EINVAL; | |
1695 | ||
1696 | if (size != sizeof cmd) | |
1697 | goto out; | |
1698 | ||
1699 | ret = -EFAULT; | |
1700 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1701 | goto out; | |
1702 | ||
1703 | ret = spufs_check_valid_dma(&cmd); | |
1704 | if (ret) | |
1705 | goto out; | |
1706 | ||
c9101bdb CH |
1707 | ret = spu_acquire(ctx); |
1708 | if (ret) | |
1709 | goto out; | |
1710 | ||
33bfd7a7 | 1711 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1712 | if (ret) |
1713 | goto out; | |
1714 | ||
a33a7d73 AB |
1715 | if (file->f_flags & O_NONBLOCK) { |
1716 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1717 | } else { | |
1718 | int status; | |
1719 | ret = spufs_wait(ctx->mfc_wq, | |
1720 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1721 | if (ret) |
1722 | goto out; | |
a33a7d73 AB |
1723 | if (status) |
1724 | ret = status; | |
1725 | } | |
a33a7d73 AB |
1726 | |
1727 | if (ret) | |
933b0e35 | 1728 | goto out_unlock; |
a33a7d73 AB |
1729 | |
1730 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1731 | ret = size; |
a33a7d73 | 1732 | |
933b0e35 KA |
1733 | out_unlock: |
1734 | spu_release(ctx); | |
a33a7d73 AB |
1735 | out: |
1736 | return ret; | |
1737 | } | |
1738 | ||
1739 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1740 | { | |
1741 | struct spu_context *ctx = file->private_data; | |
1742 | u32 free_elements, tagstatus; | |
1743 | unsigned int mask; | |
1744 | ||
933b0e35 KA |
1745 | poll_wait(file, &ctx->mfc_wq, wait); |
1746 | ||
c9101bdb CH |
1747 | /* |
1748 | * For now keep this uninterruptible and also ignore the rule | |
1749 | * that poll should not sleep. Will be fixed later. | |
1750 | */ | |
1751 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1752 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1753 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1754 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1755 | spu_release(ctx); | |
1756 | ||
a33a7d73 AB |
1757 | mask = 0; |
1758 | if (free_elements & 0xffff) | |
1759 | mask |= POLLOUT | POLLWRNORM; | |
1760 | if (tagstatus & ctx->tagwait) | |
1761 | mask |= POLLIN | POLLRDNORM; | |
1762 | ||
e48b1b45 | 1763 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1764 | free_elements, tagstatus, ctx->tagwait); |
1765 | ||
1766 | return mask; | |
1767 | } | |
1768 | ||
73b6af8a | 1769 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1770 | { |
1771 | struct spu_context *ctx = file->private_data; | |
1772 | int ret; | |
1773 | ||
c9101bdb CH |
1774 | ret = spu_acquire(ctx); |
1775 | if (ret) | |
eebead5b | 1776 | goto out; |
a33a7d73 AB |
1777 | #if 0 |
1778 | /* this currently hangs */ | |
1779 | ret = spufs_wait(ctx->mfc_wq, | |
1780 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1781 | if (ret) | |
1782 | goto out; | |
1783 | ret = spufs_wait(ctx->mfc_wq, | |
1784 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1785 | if (ret) |
1786 | goto out; | |
a33a7d73 AB |
1787 | #else |
1788 | ret = 0; | |
1789 | #endif | |
1790 | spu_release(ctx); | |
eebead5b | 1791 | out: |
a33a7d73 AB |
1792 | return ret; |
1793 | } | |
1794 | ||
02c24a82 JB |
1795 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1796 | { | |
496ad9aa | 1797 | struct inode *inode = file_inode(file); |
02c24a82 JB |
1798 | int err = filemap_write_and_wait_range(inode->i_mapping, start, end); |
1799 | if (!err) { | |
5955102c | 1800 | inode_lock(inode); |
02c24a82 | 1801 | err = spufs_mfc_flush(file, NULL); |
5955102c | 1802 | inode_unlock(inode); |
02c24a82 JB |
1803 | } |
1804 | return err; | |
a33a7d73 AB |
1805 | } |
1806 | ||
1807 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1808 | { | |
1809 | struct spu_context *ctx = file->private_data; | |
1810 | ||
1811 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1812 | } | |
1813 | ||
5dfe4c96 | 1814 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1815 | .open = spufs_mfc_open, |
43c2bbd9 | 1816 | .release = spufs_mfc_release, |
a33a7d73 AB |
1817 | .read = spufs_mfc_read, |
1818 | .write = spufs_mfc_write, | |
1819 | .poll = spufs_mfc_poll, | |
1820 | .flush = spufs_mfc_flush, | |
1821 | .fsync = spufs_mfc_fsync, | |
1822 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1823 | .mmap = spufs_mfc_mmap, |
fc15351d | 1824 | .llseek = no_llseek, |
a33a7d73 AB |
1825 | }; |
1826 | ||
197b1a82 | 1827 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1828 | { |
1829 | struct spu_context *ctx = data; | |
c9101bdb CH |
1830 | int ret; |
1831 | ||
1832 | ret = spu_acquire(ctx); | |
1833 | if (ret) | |
1834 | return ret; | |
8b3d6663 AB |
1835 | ctx->ops->npc_write(ctx, val); |
1836 | spu_release(ctx); | |
197b1a82 CH |
1837 | |
1838 | return 0; | |
67207b96 AB |
1839 | } |
1840 | ||
104f0cc2 | 1841 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1842 | { |
1843 | return ctx->ops->npc_read(ctx); | |
1844 | } | |
104f0cc2 ME |
1845 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1846 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1847 | |
197b1a82 | 1848 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1849 | { |
1850 | struct spu_context *ctx = data; | |
1851 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1852 | int ret; |
1853 | ||
1854 | ret = spu_acquire_saved(ctx); | |
1855 | if (ret) | |
1856 | return ret; | |
8b3d6663 | 1857 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1858 | spu_release_saved(ctx); |
197b1a82 CH |
1859 | |
1860 | return 0; | |
8b3d6663 AB |
1861 | } |
1862 | ||
104f0cc2 | 1863 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1864 | { |
8b3d6663 | 1865 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1866 | return lscsa->decr.slot[0]; |
1867 | } | |
104f0cc2 ME |
1868 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1869 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1870 | |
197b1a82 | 1871 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1872 | { |
1873 | struct spu_context *ctx = data; | |
c9101bdb CH |
1874 | int ret; |
1875 | ||
1876 | ret = spu_acquire_saved(ctx); | |
1877 | if (ret) | |
1878 | return ret; | |
d40a01d4 MN |
1879 | if (val) |
1880 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1881 | else | |
1882 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1883 | spu_release_saved(ctx); |
197b1a82 CH |
1884 | |
1885 | return 0; | |
8b3d6663 AB |
1886 | } |
1887 | ||
104f0cc2 | 1888 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1889 | { |
d40a01d4 MN |
1890 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1891 | return SPU_DECR_STATUS_RUNNING; | |
1892 | else | |
1893 | return 0; | |
bf1ab978 | 1894 | } |
104f0cc2 ME |
1895 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1896 | spufs_decr_status_set, "0x%llx\n", | |
1897 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1898 | |
197b1a82 | 1899 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1900 | { |
1901 | struct spu_context *ctx = data; | |
1902 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1903 | int ret; |
1904 | ||
1905 | ret = spu_acquire_saved(ctx); | |
1906 | if (ret) | |
1907 | return ret; | |
8b3d6663 | 1908 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1909 | spu_release_saved(ctx); |
197b1a82 CH |
1910 | |
1911 | return 0; | |
8b3d6663 AB |
1912 | } |
1913 | ||
104f0cc2 | 1914 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1915 | { |
8b3d6663 | 1916 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1917 | return lscsa->event_mask.slot[0]; |
1918 | } | |
1919 | ||
104f0cc2 ME |
1920 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1921 | spufs_event_mask_set, "0x%llx\n", | |
1922 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1923 | |
104f0cc2 | 1924 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1925 | { |
b9e3bd77 | 1926 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1927 | u64 stat; |
b9e3bd77 DGM |
1928 | stat = state->spu_chnlcnt_RW[0]; |
1929 | if (stat) | |
bf1ab978 DGM |
1930 | return state->spu_chnldata_RW[0]; |
1931 | return 0; | |
1932 | } | |
104f0cc2 ME |
1933 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1934 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1935 | |
197b1a82 | 1936 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1937 | { |
1938 | struct spu_context *ctx = data; | |
1939 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1940 | int ret; |
1941 | ||
1942 | ret = spu_acquire_saved(ctx); | |
1943 | if (ret) | |
1944 | return ret; | |
8b3d6663 | 1945 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1946 | spu_release_saved(ctx); |
197b1a82 CH |
1947 | |
1948 | return 0; | |
8b3d6663 AB |
1949 | } |
1950 | ||
104f0cc2 | 1951 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1952 | { |
8b3d6663 | 1953 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1954 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1955 | } |
104f0cc2 ME |
1956 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1957 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1958 | |
104f0cc2 | 1959 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1960 | { |
7b1a7014 AB |
1961 | u64 num; |
1962 | ||
7b1a7014 AB |
1963 | if (ctx->state == SPU_STATE_RUNNABLE) |
1964 | num = ctx->spu->number; | |
1965 | else | |
1966 | num = (unsigned int)-1; | |
7b1a7014 AB |
1967 | |
1968 | return num; | |
1969 | } | |
104f0cc2 ME |
1970 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1971 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1972 | |
104f0cc2 | 1973 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1974 | { |
1975 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1976 | return ctx->object_id; |
bf1ab978 DGM |
1977 | } |
1978 | ||
197b1a82 | 1979 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
1980 | { |
1981 | struct spu_context *ctx = data; | |
1982 | ctx->object_id = id; | |
197b1a82 CH |
1983 | |
1984 | return 0; | |
86767277 AB |
1985 | } |
1986 | ||
104f0cc2 ME |
1987 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1988 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1989 | |
104f0cc2 | 1990 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1991 | { |
bf1ab978 DGM |
1992 | return ctx->csa.priv2.spu_lslr_RW; |
1993 | } | |
104f0cc2 ME |
1994 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1995 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1996 | |
1997 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1998 | { | |
1999 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2000 | struct spu_context *ctx = i->i_ctx; | |
2001 | file->private_data = ctx; | |
2002 | return 0; | |
2003 | } | |
2004 | ||
cbe709c1 BH |
2005 | static int spufs_caps_show(struct seq_file *s, void *private) |
2006 | { | |
2007 | struct spu_context *ctx = s->private; | |
2008 | ||
2009 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2010 | seq_puts(s, "sched\n"); | |
2011 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2012 | seq_puts(s, "step\n"); | |
2013 | return 0; | |
2014 | } | |
2015 | ||
2016 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2017 | { | |
2018 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2019 | } | |
2020 | ||
2021 | static const struct file_operations spufs_caps_fops = { | |
2022 | .open = spufs_caps_open, | |
2023 | .read = seq_read, | |
2024 | .llseek = seq_lseek, | |
2025 | .release = single_release, | |
2026 | }; | |
2027 | ||
bf1ab978 DGM |
2028 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2029 | char __user *buf, size_t len, loff_t *pos) | |
2030 | { | |
bf1ab978 DGM |
2031 | u32 data; |
2032 | ||
cbea9238 JK |
2033 | /* EOF if there's no entry in the mbox */ |
2034 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2035 | return 0; | |
2036 | ||
2037 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2038 | |
2039 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2040 | } | |
2041 | ||
69a2f00c DGM |
2042 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2043 | size_t len, loff_t *pos) | |
2044 | { | |
bf1ab978 | 2045 | int ret; |
69a2f00c | 2046 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2047 | |
2048 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2049 | return -EFAULT; | |
2050 | ||
c9101bdb CH |
2051 | ret = spu_acquire_saved(ctx); |
2052 | if (ret) | |
2053 | return ret; | |
69a2f00c | 2054 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2055 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2056 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2057 | spu_release_saved(ctx); |
69a2f00c | 2058 | |
bf1ab978 | 2059 | return ret; |
69a2f00c DGM |
2060 | } |
2061 | ||
5dfe4c96 | 2062 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2063 | .open = spufs_info_open, |
2064 | .read = spufs_mbox_info_read, | |
2065 | .llseek = generic_file_llseek, | |
2066 | }; | |
2067 | ||
bf1ab978 DGM |
2068 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2069 | char __user *buf, size_t len, loff_t *pos) | |
2070 | { | |
bf1ab978 DGM |
2071 | u32 data; |
2072 | ||
cbea9238 JK |
2073 | /* EOF if there's no entry in the ibox */ |
2074 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2075 | return 0; | |
2076 | ||
2077 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2078 | |
2079 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2080 | } | |
2081 | ||
69a2f00c DGM |
2082 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2083 | size_t len, loff_t *pos) | |
2084 | { | |
2085 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2086 | int ret; |
69a2f00c DGM |
2087 | |
2088 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2089 | return -EFAULT; | |
2090 | ||
c9101bdb CH |
2091 | ret = spu_acquire_saved(ctx); |
2092 | if (ret) | |
2093 | return ret; | |
69a2f00c | 2094 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2095 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2096 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2097 | spu_release_saved(ctx); |
69a2f00c | 2098 | |
bf1ab978 | 2099 | return ret; |
69a2f00c DGM |
2100 | } |
2101 | ||
5dfe4c96 | 2102 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2103 | .open = spufs_info_open, |
2104 | .read = spufs_ibox_info_read, | |
2105 | .llseek = generic_file_llseek, | |
2106 | }; | |
2107 | ||
bf1ab978 DGM |
2108 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2109 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2110 | { |
69a2f00c DGM |
2111 | int i, cnt; |
2112 | u32 data[4]; | |
2113 | u32 wbox_stat; | |
2114 | ||
bf1ab978 DGM |
2115 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2116 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2117 | for (i = 0; i < cnt; i++) { | |
2118 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2119 | } | |
2120 | ||
2121 | return simple_read_from_buffer(buf, len, pos, &data, | |
2122 | cnt * sizeof(u32)); | |
2123 | } | |
2124 | ||
2125 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2126 | size_t len, loff_t *pos) | |
2127 | { | |
2128 | struct spu_context *ctx = file->private_data; | |
2129 | int ret; | |
2130 | ||
69a2f00c DGM |
2131 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2132 | return -EFAULT; | |
2133 | ||
c9101bdb CH |
2134 | ret = spu_acquire_saved(ctx); |
2135 | if (ret) | |
2136 | return ret; | |
69a2f00c | 2137 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2138 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2139 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2140 | spu_release_saved(ctx); |
69a2f00c | 2141 | |
bf1ab978 | 2142 | return ret; |
69a2f00c DGM |
2143 | } |
2144 | ||
5dfe4c96 | 2145 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2146 | .open = spufs_info_open, |
2147 | .read = spufs_wbox_info_read, | |
2148 | .llseek = generic_file_llseek, | |
2149 | }; | |
2150 | ||
bf1ab978 DGM |
2151 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2152 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2153 | { |
b9e3bd77 DGM |
2154 | struct spu_dma_info info; |
2155 | struct mfc_cq_sr *qp, *spuqp; | |
2156 | int i; | |
2157 | ||
b9e3bd77 DGM |
2158 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2159 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2160 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2161 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2162 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2163 | for (i = 0; i < 16; i++) { | |
2164 | qp = &info.dma_info_command_data[i]; | |
2165 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2166 | ||
2167 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2168 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2169 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2170 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2171 | } | |
b9e3bd77 DGM |
2172 | |
2173 | return simple_read_from_buffer(buf, len, pos, &info, | |
2174 | sizeof info); | |
2175 | } | |
2176 | ||
bf1ab978 DGM |
2177 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2178 | size_t len, loff_t *pos) | |
2179 | { | |
2180 | struct spu_context *ctx = file->private_data; | |
2181 | int ret; | |
2182 | ||
2183 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2184 | return -EFAULT; | |
2185 | ||
c9101bdb CH |
2186 | ret = spu_acquire_saved(ctx); |
2187 | if (ret) | |
2188 | return ret; | |
bf1ab978 DGM |
2189 | spin_lock(&ctx->csa.register_lock); |
2190 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2191 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2192 | spu_release_saved(ctx); |
bf1ab978 DGM |
2193 | |
2194 | return ret; | |
2195 | } | |
2196 | ||
5dfe4c96 | 2197 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2198 | .open = spufs_info_open, |
2199 | .read = spufs_dma_info_read, | |
fc15351d | 2200 | .llseek = no_llseek, |
b9e3bd77 DGM |
2201 | }; |
2202 | ||
bf1ab978 DGM |
2203 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2204 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2205 | { |
b9e3bd77 | 2206 | struct spu_proxydma_info info; |
b9e3bd77 | 2207 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2208 | int ret = sizeof info; |
b9e3bd77 DGM |
2209 | int i; |
2210 | ||
2211 | if (len < ret) | |
2212 | return -EINVAL; | |
2213 | ||
2214 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2215 | return -EFAULT; | |
2216 | ||
b9e3bd77 DGM |
2217 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2218 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2219 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2220 | for (i = 0; i < 8; i++) { | |
2221 | qp = &info.proxydma_info_command_data[i]; | |
2222 | puqp = &ctx->csa.priv2.puq[i]; | |
2223 | ||
2224 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2225 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2226 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2227 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2228 | } | |
bf1ab978 DGM |
2229 | |
2230 | return simple_read_from_buffer(buf, len, pos, &info, | |
2231 | sizeof info); | |
2232 | } | |
2233 | ||
2234 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2235 | size_t len, loff_t *pos) | |
2236 | { | |
2237 | struct spu_context *ctx = file->private_data; | |
2238 | int ret; | |
2239 | ||
c9101bdb CH |
2240 | ret = spu_acquire_saved(ctx); |
2241 | if (ret) | |
2242 | return ret; | |
bf1ab978 DGM |
2243 | spin_lock(&ctx->csa.register_lock); |
2244 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2245 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2246 | spu_release_saved(ctx); |
b9e3bd77 | 2247 | |
b9e3bd77 DGM |
2248 | return ret; |
2249 | } | |
2250 | ||
5dfe4c96 | 2251 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2252 | .open = spufs_info_open, |
2253 | .read = spufs_proxydma_info_read, | |
fc15351d | 2254 | .llseek = no_llseek, |
b9e3bd77 DGM |
2255 | }; |
2256 | ||
476273ad CH |
2257 | static int spufs_show_tid(struct seq_file *s, void *private) |
2258 | { | |
2259 | struct spu_context *ctx = s->private; | |
2260 | ||
2261 | seq_printf(s, "%d\n", ctx->tid); | |
2262 | return 0; | |
2263 | } | |
2264 | ||
2265 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2266 | { | |
2267 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2268 | } | |
2269 | ||
2270 | static const struct file_operations spufs_tid_fops = { | |
2271 | .open = spufs_tid_open, | |
2272 | .read = seq_read, | |
2273 | .llseek = seq_lseek, | |
2274 | .release = single_release, | |
2275 | }; | |
2276 | ||
e9f8a0b6 CH |
2277 | static const char *ctx_state_names[] = { |
2278 | "user", "system", "iowait", "loaded" | |
2279 | }; | |
2280 | ||
2281 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2282 | enum spu_utilization_state state) |
e9f8a0b6 | 2283 | { |
27ec41d3 | 2284 | unsigned long long time = ctx->stats.times[state]; |
e9f8a0b6 | 2285 | |
27ec41d3 AD |
2286 | /* |
2287 | * In general, utilization statistics are updated by the controlling | |
2288 | * thread as the spu context moves through various well defined | |
2289 | * state transitions, but if the context is lazily loaded its | |
2290 | * utilization statistics are not updated as the controlling thread | |
2291 | * is not tightly coupled with the execution of the spu context. We | |
2292 | * calculate and apply the time delta from the last recorded state | |
2293 | * of the spu context. | |
2294 | */ | |
2295 | if (ctx->spu && ctx->stats.util_state == state) { | |
f2dec1ea | 2296 | time += ktime_get_ns() - ctx->stats.tstamp; |
27ec41d3 | 2297 | } |
e9f8a0b6 | 2298 | |
27ec41d3 | 2299 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2300 | } |
2301 | ||
2302 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2303 | { | |
2304 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2305 | ||
2306 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2307 | slb_flts += (ctx->spu->stats.slb_flt - | |
2308 | ctx->stats.slb_flt_base); | |
2309 | } | |
2310 | ||
2311 | return slb_flts; | |
2312 | } | |
2313 | ||
2314 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2315 | { | |
2316 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2317 | ||
2318 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2319 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2320 | ctx->stats.class2_intr_base); | |
2321 | } | |
2322 | ||
2323 | return class2_intrs; | |
2324 | } | |
2325 | ||
2326 | ||
2327 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2328 | { | |
2329 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2330 | int ret; |
2331 | ||
2332 | ret = spu_acquire(ctx); | |
2333 | if (ret) | |
2334 | return ret; | |
e9f8a0b6 | 2335 | |
e9f8a0b6 CH |
2336 | seq_printf(s, "%s %llu %llu %llu %llu " |
2337 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2338 | ctx_state_names[ctx->stats.util_state], |
2339 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2340 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2341 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2342 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2343 | ctx->stats.vol_ctx_switch, |
2344 | ctx->stats.invol_ctx_switch, | |
2345 | spufs_slb_flts(ctx), | |
2346 | ctx->stats.hash_flt, | |
2347 | ctx->stats.min_flt, | |
2348 | ctx->stats.maj_flt, | |
2349 | spufs_class2_intrs(ctx), | |
2350 | ctx->stats.libassist); | |
2351 | spu_release(ctx); | |
2352 | return 0; | |
2353 | } | |
2354 | ||
2355 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2356 | { | |
2357 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2358 | } | |
2359 | ||
2360 | static const struct file_operations spufs_stat_fops = { | |
2361 | .open = spufs_stat_open, | |
2362 | .read = seq_read, | |
2363 | .llseek = seq_lseek, | |
2364 | .release = single_release, | |
2365 | }; | |
2366 | ||
5158e9b5 CH |
2367 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2368 | { | |
2369 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2370 | SWITCH_LOG_BUFSIZE; | |
2371 | } | |
2372 | ||
2373 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2374 | { | |
2375 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2376 | } | |
2377 | ||
2378 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2379 | { | |
2380 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2381 | int rc; |
2382 | ||
2383 | rc = spu_acquire(ctx); | |
2384 | if (rc) | |
2385 | return rc; | |
5158e9b5 | 2386 | |
5158e9b5 | 2387 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2388 | rc = -EBUSY; |
2389 | goto out; | |
5158e9b5 | 2390 | } |
f5ed0eb6 | 2391 | |
837ef884 | 2392 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2393 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2394 | GFP_KERNEL); | |
2395 | ||
2396 | if (!ctx->switch_log) { | |
2397 | rc = -ENOMEM; | |
2398 | goto out; | |
2399 | } | |
2400 | ||
837ef884 | 2401 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2402 | init_waitqueue_head(&ctx->switch_log->wait); |
2403 | rc = 0; | |
2404 | ||
2405 | out: | |
2406 | spu_release(ctx); | |
2407 | return rc; | |
2408 | } | |
2409 | ||
2410 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2411 | { | |
2412 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2413 | int rc; | |
2414 | ||
2415 | rc = spu_acquire(ctx); | |
2416 | if (rc) | |
2417 | return rc; | |
2418 | ||
2419 | kfree(ctx->switch_log); | |
2420 | ctx->switch_log = NULL; | |
2421 | spu_release(ctx); | |
5158e9b5 CH |
2422 | |
2423 | return 0; | |
5158e9b5 CH |
2424 | } |
2425 | ||
2426 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2427 | { | |
2428 | struct switch_log_entry *p; | |
2429 | ||
2430 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2431 | ||
2432 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2433 | (unsigned int) p->tstamp.tv_sec, | |
2434 | (unsigned int) p->tstamp.tv_nsec, | |
2435 | p->spu_id, | |
2436 | (unsigned int) p->type, | |
2437 | (unsigned int) p->val, | |
2438 | (unsigned long long) p->timebase); | |
2439 | } | |
2440 | ||
2441 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2442 | size_t len, loff_t *ppos) | |
2443 | { | |
496ad9aa | 2444 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2445 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2446 | int error = 0, cnt = 0; | |
2447 | ||
17e37675 | 2448 | if (!buf) |
5158e9b5 CH |
2449 | return -EINVAL; |
2450 | ||
f5ed0eb6 JK |
2451 | error = spu_acquire(ctx); |
2452 | if (error) | |
2453 | return error; | |
2454 | ||
5158e9b5 CH |
2455 | while (cnt < len) { |
2456 | char tbuf[128]; | |
2457 | int width; | |
2458 | ||
14f693ee JK |
2459 | if (spufs_switch_log_used(ctx) == 0) { |
2460 | if (cnt > 0) { | |
2461 | /* If there's data ready to go, we can | |
2462 | * just return straight away */ | |
2463 | break; | |
2464 | ||
2465 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2466 | error = -EAGAIN; |
2467 | break; | |
14f693ee JK |
2468 | |
2469 | } else { | |
2470 | /* spufs_wait will drop the mutex and | |
2471 | * re-acquire, but since we're in read(), the | |
2472 | * file cannot be _released (and so | |
2473 | * ctx->switch_log is stable). | |
2474 | */ | |
2475 | error = spufs_wait(ctx->switch_log->wait, | |
2476 | spufs_switch_log_used(ctx) > 0); | |
2477 | ||
2478 | /* On error, spufs_wait returns without the | |
2479 | * state mutex held */ | |
2480 | if (error) | |
2481 | return error; | |
2482 | ||
2483 | /* We may have had entries read from underneath | |
2484 | * us while we dropped the mutex in spufs_wait, | |
2485 | * so re-check */ | |
2486 | if (spufs_switch_log_used(ctx) == 0) | |
2487 | continue; | |
f5ed0eb6 | 2488 | } |
5158e9b5 CH |
2489 | } |
2490 | ||
5158e9b5 | 2491 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2492 | if (width < len) |
5158e9b5 CH |
2493 | ctx->switch_log->tail = |
2494 | (ctx->switch_log->tail + 1) % | |
2495 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2496 | else |
2497 | /* If the record is greater than space available return | |
2498 | * partial buffer (so far) */ | |
5158e9b5 CH |
2499 | break; |
2500 | ||
2501 | error = copy_to_user(buf + cnt, tbuf, width); | |
2502 | if (error) | |
2503 | break; | |
2504 | cnt += width; | |
2505 | } | |
2506 | ||
f5ed0eb6 JK |
2507 | spu_release(ctx); |
2508 | ||
5158e9b5 CH |
2509 | return cnt == 0 ? error : cnt; |
2510 | } | |
2511 | ||
2512 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2513 | { | |
496ad9aa | 2514 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2515 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2516 | unsigned int mask = 0; | |
f5ed0eb6 | 2517 | int rc; |
5158e9b5 CH |
2518 | |
2519 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2520 | ||
f5ed0eb6 JK |
2521 | rc = spu_acquire(ctx); |
2522 | if (rc) | |
2523 | return rc; | |
2524 | ||
5158e9b5 CH |
2525 | if (spufs_switch_log_used(ctx) > 0) |
2526 | mask |= POLLIN; | |
2527 | ||
f5ed0eb6 JK |
2528 | spu_release(ctx); |
2529 | ||
5158e9b5 CH |
2530 | return mask; |
2531 | } | |
2532 | ||
2533 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2534 | .open = spufs_switch_log_open, |
2535 | .read = spufs_switch_log_read, | |
2536 | .poll = spufs_switch_log_poll, | |
2537 | .release = spufs_switch_log_release, | |
fc15351d | 2538 | .llseek = no_llseek, |
5158e9b5 CH |
2539 | }; |
2540 | ||
f5ed0eb6 JK |
2541 | /** |
2542 | * Log a context switch event to a switch log reader. | |
2543 | * | |
2544 | * Must be called with ctx->state_mutex held. | |
2545 | */ | |
5158e9b5 CH |
2546 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2547 | u32 type, u32 val) | |
2548 | { | |
2549 | if (!ctx->switch_log) | |
2550 | return; | |
2551 | ||
5158e9b5 CH |
2552 | if (spufs_switch_log_avail(ctx) > 1) { |
2553 | struct switch_log_entry *p; | |
2554 | ||
2555 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2556 | ktime_get_ts(&p->tstamp); | |
2557 | p->timebase = get_tb(); | |
2558 | p->spu_id = spu ? spu->number : -1; | |
2559 | p->type = type; | |
2560 | p->val = val; | |
2561 | ||
2562 | ctx->switch_log->head = | |
2563 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2564 | } | |
5158e9b5 CH |
2565 | |
2566 | wake_up(&ctx->switch_log->wait); | |
2567 | } | |
e9f8a0b6 | 2568 | |
46deed69 LB |
2569 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2570 | { | |
2571 | struct spu_context *ctx = s->private; | |
2572 | u64 mfc_control_RW; | |
2573 | ||
2574 | mutex_lock(&ctx->state_mutex); | |
2575 | if (ctx->spu) { | |
2576 | struct spu *spu = ctx->spu; | |
2577 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2578 | ||
2579 | spin_lock_irq(&spu->register_lock); | |
2580 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2581 | spin_unlock_irq(&spu->register_lock); | |
2582 | } else { | |
2583 | struct spu_state *csa = &ctx->csa; | |
2584 | ||
2585 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2586 | } | |
2587 | ||
2588 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2589 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2590 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2591 | ctx->flags, | |
2592 | ctx->sched_flags, | |
2593 | ctx->prio, | |
2594 | ctx->time_slice, | |
2595 | ctx->spu ? ctx->spu->number : -1, | |
2596 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2597 | ctx->csa.class_0_pending, | |
2598 | ctx->csa.class_0_dar, | |
2599 | ctx->csa.class_1_dsisr, | |
2600 | mfc_control_RW, | |
2601 | ctx->ops->runcntl_read(ctx), | |
2602 | ctx->ops->status_read(ctx)); | |
2603 | ||
2604 | mutex_unlock(&ctx->state_mutex); | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2610 | { | |
2611 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2612 | } | |
2613 | ||
2614 | static const struct file_operations spufs_ctx_fops = { | |
2615 | .open = spufs_ctx_open, | |
2616 | .read = seq_read, | |
2617 | .llseek = seq_lseek, | |
2618 | .release = single_release, | |
2619 | }; | |
2620 | ||
74254647 | 2621 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2622 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2623 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2624 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2625 | { "mbox", &spufs_mbox_fops, 0444, }, |
2626 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2627 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2628 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2629 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2630 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2631 | { "signal1", &spufs_signal1_fops, 0666, }, |
2632 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2633 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2634 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2635 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2636 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2637 | { "lslr", &spufs_lslr_ops, 0444, }, |
2638 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2639 | { "mss", &spufs_mss_fops, 0666, }, | |
2640 | { "npc", &spufs_npc_ops, 0666, }, | |
2641 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2642 | { "decr", &spufs_decr_ops, 0666, }, |
2643 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2644 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2645 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2646 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2647 | { "phys-id", &spufs_id_ops, 0666, }, |
2648 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2649 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2650 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2651 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2652 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2653 | sizeof(struct spu_dma_info), }, | |
2654 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2655 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2656 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2657 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2658 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2659 | {}, |
2660 | }; | |
5737edd1 | 2661 | |
74254647 | 2662 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2663 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2664 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2665 | { "mbox", &spufs_mbox_fops, 0444, }, |
2666 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2667 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2668 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2669 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2670 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2671 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2672 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2673 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2674 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2675 | { "mss", &spufs_mss_fops, 0666, }, | |
2676 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2677 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2678 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2679 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2680 | { "phys-id", &spufs_id_ops, 0666, }, |
2681 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2682 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2683 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2684 | {}, |
2685 | }; | |
2686 | ||
74254647 | 2687 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2688 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2689 | {}, |
2690 | }; | |
bf1ab978 | 2691 | |
74254647 | 2692 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2693 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2694 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2695 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2696 | { "decr", NULL, spufs_decr_get, 19 }, | |
2697 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2698 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2699 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2700 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2701 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2702 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2703 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2704 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2705 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2706 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2707 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2708 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2709 | { "proxydma_info", __spufs_proxydma_info_read, | |
2710 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2711 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2712 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2713 | { NULL }, |
bf1ab978 | 2714 | }; |