Commit | Line | Data |
---|---|---|
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> |
7c0f6ba6 | 38 | #include <linux/uaccess.h> |
67207b96 AB |
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 | 235 | static int |
11bac800 | 236 | spufs_mem_mmap_fault(struct vm_fault *vmf) |
8b3d6663 | 237 | { |
11bac800 | 238 | struct vm_area_struct *vma = vmf->vma; |
f1fa74f4 | 239 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
240 | unsigned long pfn, offset; |
241 | ||
b1e2270f | 242 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 243 | if (offset >= LS_SIZE) |
b1e2270f | 244 | return VM_FAULT_SIGBUS; |
128b8546 | 245 | |
b1e2270f | 246 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
1a29d85e | 247 | vmf->address, offset); |
f1fa74f4 | 248 | |
c9101bdb | 249 | if (spu_acquire(ctx)) |
b1e2270f | 250 | return VM_FAULT_NOPAGE; |
8b3d6663 | 251 | |
ac91cb8d | 252 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 253 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 254 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 255 | } else { |
64b3d0e8 | 256 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 257 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 258 | } |
1a29d85e | 259 | vm_insert_pfn(vma, vmf->address, pfn); |
8b3d6663 | 260 | |
78bde53e | 261 | spu_release(ctx); |
8b3d6663 | 262 | |
b1e2270f | 263 | return VM_FAULT_NOPAGE; |
8b3d6663 AB |
264 | } |
265 | ||
a352894d BH |
266 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
267 | unsigned long address, | |
268 | void *buf, int len, int write) | |
269 | { | |
270 | struct spu_context *ctx = vma->vm_file->private_data; | |
271 | unsigned long offset = address - vma->vm_start; | |
272 | char *local_store; | |
273 | ||
274 | if (write && !(vma->vm_flags & VM_WRITE)) | |
275 | return -EACCES; | |
276 | if (spu_acquire(ctx)) | |
277 | return -EINTR; | |
278 | if ((offset + len) > vma->vm_end) | |
279 | len = vma->vm_end - offset; | |
280 | local_store = ctx->ops->get_ls(ctx); | |
281 | if (write) | |
282 | memcpy_toio(local_store + offset, buf, len); | |
283 | else | |
284 | memcpy_fromio(buf, local_store + offset, len); | |
285 | spu_release(ctx); | |
286 | return len; | |
287 | } | |
78bde53e | 288 | |
f0f37e2f | 289 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 290 | .fault = spufs_mem_mmap_fault, |
a352894d | 291 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
292 | }; |
293 | ||
f1fa74f4 | 294 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 295 | { |
8b3d6663 AB |
296 | if (!(vma->vm_flags & VM_SHARED)) |
297 | return -EINVAL; | |
67207b96 | 298 | |
78bde53e | 299 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 300 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
301 | |
302 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
303 | return 0; |
304 | } | |
305 | ||
5dfe4c96 | 306 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
307 | .open = spufs_mem_open, |
308 | .release = spufs_mem_release, | |
309 | .read = spufs_mem_read, | |
310 | .write = spufs_mem_write, | |
311 | .llseek = generic_file_llseek, | |
312 | .mmap = spufs_mem_mmap, | |
8b3d6663 AB |
313 | }; |
314 | ||
11bac800 | 315 | static int spufs_ps_fault(struct vm_fault *vmf, |
78bde53e | 316 | unsigned long ps_offs, |
27d5bf2a | 317 | unsigned long ps_size) |
6df10a82 | 318 | { |
11bac800 | 319 | struct spu_context *ctx = vmf->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; | |
11bac800 | 357 | vm_insert_pfn(vmf->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 |
11bac800 | 370 | static int spufs_cntl_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 371 | { |
11bac800 | 372 | return spufs_ps_fault(vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
373 | } |
374 | ||
f0f37e2f | 375 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 376 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
377 | }; |
378 | ||
379 | /* | |
380 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
381 | */ |
382 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
383 | { | |
384 | if (!(vma->vm_flags & VM_SHARED)) | |
385 | return -EINVAL; | |
386 | ||
78bde53e | 387 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 388 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
389 | |
390 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
391 | return 0; | |
392 | } | |
27d5bf2a BH |
393 | #else /* SPUFS_MMAP_4K */ |
394 | #define spufs_cntl_mmap NULL | |
395 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 396 | |
197b1a82 | 397 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 398 | { |
e1dbff2b | 399 | struct spu_context *ctx = data; |
c9101bdb | 400 | int ret; |
6df10a82 | 401 | |
c9101bdb CH |
402 | ret = spu_acquire(ctx); |
403 | if (ret) | |
404 | return ret; | |
197b1a82 | 405 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
406 | spu_release(ctx); |
407 | ||
197b1a82 | 408 | return 0; |
6df10a82 MN |
409 | } |
410 | ||
197b1a82 | 411 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 412 | { |
e1dbff2b | 413 | struct spu_context *ctx = data; |
c9101bdb | 414 | int ret; |
e1dbff2b | 415 | |
c9101bdb CH |
416 | ret = spu_acquire(ctx); |
417 | if (ret) | |
418 | return ret; | |
e1dbff2b AB |
419 | ctx->ops->runcntl_write(ctx, val); |
420 | spu_release(ctx); | |
197b1a82 CH |
421 | |
422 | return 0; | |
6df10a82 MN |
423 | } |
424 | ||
e1dbff2b | 425 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 426 | { |
e1dbff2b AB |
427 | struct spufs_inode_info *i = SPUFS_I(inode); |
428 | struct spu_context *ctx = i->i_ctx; | |
429 | ||
47d3a5fa | 430 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 431 | file->private_data = ctx; |
43c2bbd9 CH |
432 | if (!i->i_openers++) |
433 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 434 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 435 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 436 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
437 | } |
438 | ||
43c2bbd9 CH |
439 | static int |
440 | spufs_cntl_release(struct inode *inode, struct file *file) | |
441 | { | |
442 | struct spufs_inode_info *i = SPUFS_I(inode); | |
443 | struct spu_context *ctx = i->i_ctx; | |
444 | ||
74bedc4d | 445 | simple_attr_release(inode, file); |
43c2bbd9 | 446 | |
47d3a5fa | 447 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
448 | if (!--i->i_openers) |
449 | ctx->cntl = NULL; | |
47d3a5fa | 450 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
451 | return 0; |
452 | } | |
453 | ||
5dfe4c96 | 454 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 455 | .open = spufs_cntl_open, |
43c2bbd9 | 456 | .release = spufs_cntl_release, |
8b88b099 CH |
457 | .read = simple_attr_read, |
458 | .write = simple_attr_write, | |
fc15351d | 459 | .llseek = generic_file_llseek, |
6df10a82 | 460 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
461 | }; |
462 | ||
8b3d6663 AB |
463 | static int |
464 | spufs_regs_open(struct inode *inode, struct file *file) | |
465 | { | |
466 | struct spufs_inode_info *i = SPUFS_I(inode); | |
467 | file->private_data = i->i_ctx; | |
468 | return 0; | |
469 | } | |
470 | ||
bf1ab978 DGM |
471 | static ssize_t |
472 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
473 | size_t size, loff_t *pos) | |
474 | { | |
475 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
476 | return simple_read_from_buffer(buffer, size, pos, | |
477 | lscsa->gprs, sizeof lscsa->gprs); | |
478 | } | |
479 | ||
8b3d6663 AB |
480 | static ssize_t |
481 | spufs_regs_read(struct file *file, char __user *buffer, | |
482 | size_t size, loff_t *pos) | |
483 | { | |
8b3d6663 | 484 | int ret; |
bf1ab978 | 485 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 486 | |
f027faa2 JK |
487 | /* pre-check for file position: if we'd return EOF, there's no point |
488 | * causing a deschedule */ | |
489 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
490 | return 0; | |
491 | ||
c9101bdb CH |
492 | ret = spu_acquire_saved(ctx); |
493 | if (ret) | |
494 | return ret; | |
bf1ab978 | 495 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 496 | spu_release_saved(ctx); |
8b3d6663 AB |
497 | return ret; |
498 | } | |
499 | ||
500 | static ssize_t | |
501 | spufs_regs_write(struct file *file, const char __user *buffer, | |
502 | size_t size, loff_t *pos) | |
503 | { | |
504 | struct spu_context *ctx = file->private_data; | |
505 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
506 | int ret; | |
507 | ||
d219889b | 508 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 509 | return -EFBIG; |
d219889b | 510 | |
c9101bdb CH |
511 | ret = spu_acquire_saved(ctx); |
512 | if (ret) | |
513 | return ret; | |
8b3d6663 | 514 | |
63c3b9d7 AM |
515 | size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, |
516 | buffer, size); | |
8b3d6663 | 517 | |
27b1ea09 | 518 | spu_release_saved(ctx); |
63c3b9d7 | 519 | return size; |
8b3d6663 AB |
520 | } |
521 | ||
5dfe4c96 | 522 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
523 | .open = spufs_regs_open, |
524 | .read = spufs_regs_read, | |
525 | .write = spufs_regs_write, | |
67207b96 AB |
526 | .llseek = generic_file_llseek, |
527 | }; | |
528 | ||
bf1ab978 DGM |
529 | static ssize_t |
530 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
531 | size_t size, loff_t * pos) | |
532 | { | |
533 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
534 | return simple_read_from_buffer(buffer, size, pos, | |
535 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
536 | } | |
537 | ||
8b3d6663 AB |
538 | static ssize_t |
539 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
540 | size_t size, loff_t * pos) | |
541 | { | |
8b3d6663 | 542 | int ret; |
bf1ab978 | 543 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 544 | |
c9101bdb CH |
545 | ret = spu_acquire_saved(ctx); |
546 | if (ret) | |
547 | return ret; | |
bf1ab978 | 548 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 549 | spu_release_saved(ctx); |
8b3d6663 AB |
550 | return ret; |
551 | } | |
552 | ||
553 | static ssize_t | |
554 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
555 | size_t size, loff_t * pos) | |
556 | { | |
557 | struct spu_context *ctx = file->private_data; | |
558 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
559 | int ret; | |
560 | ||
d219889b | 561 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 562 | return -EFBIG; |
8b3d6663 | 563 | |
c9101bdb CH |
564 | ret = spu_acquire_saved(ctx); |
565 | if (ret) | |
566 | return ret; | |
8b3d6663 | 567 | |
63c3b9d7 AM |
568 | size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, |
569 | buffer, size); | |
8b3d6663 | 570 | |
27b1ea09 | 571 | spu_release_saved(ctx); |
63c3b9d7 | 572 | return size; |
8b3d6663 AB |
573 | } |
574 | ||
5dfe4c96 | 575 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
576 | .open = spufs_regs_open, |
577 | .read = spufs_fpcr_read, | |
578 | .write = spufs_fpcr_write, | |
579 | .llseek = generic_file_llseek, | |
580 | }; | |
581 | ||
67207b96 AB |
582 | /* generic open function for all pipe-like files */ |
583 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
584 | { | |
585 | struct spufs_inode_info *i = SPUFS_I(inode); | |
586 | file->private_data = i->i_ctx; | |
587 | ||
588 | return nonseekable_open(inode, file); | |
589 | } | |
590 | ||
cdcc89bb AB |
591 | /* |
592 | * Read as many bytes from the mailbox as possible, until | |
593 | * one of the conditions becomes true: | |
594 | * | |
595 | * - no more data available in the mailbox | |
596 | * - end of the user provided buffer | |
597 | * - end of the mapped area | |
598 | */ | |
67207b96 AB |
599 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
600 | size_t len, loff_t *pos) | |
601 | { | |
8b3d6663 | 602 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
603 | u32 mbox_data, __user *udata; |
604 | ssize_t count; | |
67207b96 AB |
605 | |
606 | if (len < 4) | |
607 | return -EINVAL; | |
608 | ||
cdcc89bb AB |
609 | if (!access_ok(VERIFY_WRITE, buf, len)) |
610 | return -EFAULT; | |
611 | ||
612 | udata = (void __user *)buf; | |
613 | ||
c9101bdb CH |
614 | count = spu_acquire(ctx); |
615 | if (count) | |
616 | return count; | |
617 | ||
274cef5e | 618 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
619 | int ret; |
620 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
621 | if (ret == 0) | |
622 | break; | |
623 | ||
624 | /* | |
625 | * at the end of the mapped area, we can fault | |
626 | * but still need to return the data we have | |
627 | * read successfully so far. | |
628 | */ | |
629 | ret = __put_user(mbox_data, udata); | |
630 | if (ret) { | |
631 | if (!count) | |
632 | count = -EFAULT; | |
633 | break; | |
634 | } | |
635 | } | |
8b3d6663 | 636 | spu_release(ctx); |
67207b96 | 637 | |
cdcc89bb AB |
638 | if (!count) |
639 | count = -EAGAIN; | |
67207b96 | 640 | |
cdcc89bb | 641 | return count; |
67207b96 AB |
642 | } |
643 | ||
5dfe4c96 | 644 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
645 | .open = spufs_pipe_open, |
646 | .read = spufs_mbox_read, | |
fc15351d | 647 | .llseek = no_llseek, |
67207b96 AB |
648 | }; |
649 | ||
650 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
651 | size_t len, loff_t *pos) | |
652 | { | |
8b3d6663 | 653 | struct spu_context *ctx = file->private_data; |
c9101bdb | 654 | ssize_t ret; |
67207b96 AB |
655 | u32 mbox_stat; |
656 | ||
657 | if (len < 4) | |
658 | return -EINVAL; | |
659 | ||
c9101bdb CH |
660 | ret = spu_acquire(ctx); |
661 | if (ret) | |
662 | return ret; | |
8b3d6663 AB |
663 | |
664 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
665 | ||
666 | spu_release(ctx); | |
67207b96 AB |
667 | |
668 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
669 | return -EFAULT; | |
670 | ||
671 | return 4; | |
672 | } | |
673 | ||
5dfe4c96 | 674 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
675 | .open = spufs_pipe_open, |
676 | .read = spufs_mbox_stat_read, | |
fc15351d | 677 | .llseek = no_llseek, |
67207b96 AB |
678 | }; |
679 | ||
680 | /* low-level ibox access function */ | |
8b3d6663 | 681 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 682 | { |
8b3d6663 AB |
683 | return ctx->ops->ibox_read(ctx, data); |
684 | } | |
67207b96 | 685 | |
8b3d6663 AB |
686 | /* interrupt-level ibox callback function. */ |
687 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 688 | { |
8b3d6663 AB |
689 | struct spu_context *ctx = spu->ctx; |
690 | ||
7d7be3aa AV |
691 | if (ctx) |
692 | wake_up_all(&ctx->ibox_wq); | |
67207b96 AB |
693 | } |
694 | ||
cdcc89bb AB |
695 | /* |
696 | * Read as many bytes from the interrupt mailbox as possible, until | |
697 | * one of the conditions becomes true: | |
698 | * | |
699 | * - no more data available in the mailbox | |
700 | * - end of the user provided buffer | |
701 | * - end of the mapped area | |
702 | * | |
703 | * If the file is opened without O_NONBLOCK, we wait here until | |
704 | * any data is available, but return when we have been able to | |
705 | * read something. | |
706 | */ | |
67207b96 AB |
707 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
708 | size_t len, loff_t *pos) | |
709 | { | |
8b3d6663 | 710 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
711 | u32 ibox_data, __user *udata; |
712 | ssize_t count; | |
67207b96 AB |
713 | |
714 | if (len < 4) | |
715 | return -EINVAL; | |
716 | ||
cdcc89bb AB |
717 | if (!access_ok(VERIFY_WRITE, buf, len)) |
718 | return -EFAULT; | |
719 | ||
720 | udata = (void __user *)buf; | |
721 | ||
c9101bdb CH |
722 | count = spu_acquire(ctx); |
723 | if (count) | |
eebead5b | 724 | goto out; |
67207b96 | 725 | |
cdcc89bb AB |
726 | /* wait only for the first element */ |
727 | count = 0; | |
67207b96 | 728 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 729 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 730 | count = -EAGAIN; |
eebead5b CH |
731 | goto out_unlock; |
732 | } | |
67207b96 | 733 | } else { |
cdcc89bb | 734 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
735 | if (count) |
736 | goto out; | |
67207b96 AB |
737 | } |
738 | ||
cdcc89bb AB |
739 | /* if we can't write at all, return -EFAULT */ |
740 | count = __put_user(ibox_data, udata); | |
741 | if (count) | |
eebead5b | 742 | goto out_unlock; |
8b3d6663 | 743 | |
cdcc89bb AB |
744 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
745 | int ret; | |
746 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
747 | if (ret == 0) | |
748 | break; | |
749 | /* | |
750 | * at the end of the mapped area, we can fault | |
751 | * but still need to return the data we have | |
752 | * read successfully so far. | |
753 | */ | |
754 | ret = __put_user(ibox_data, udata); | |
755 | if (ret) | |
756 | break; | |
757 | } | |
67207b96 | 758 | |
eebead5b | 759 | out_unlock: |
cdcc89bb | 760 | spu_release(ctx); |
eebead5b | 761 | out: |
cdcc89bb | 762 | return count; |
67207b96 AB |
763 | } |
764 | ||
8153a5ea | 765 | static __poll_t spufs_ibox_poll(struct file *file, poll_table *wait) |
67207b96 | 766 | { |
8b3d6663 | 767 | struct spu_context *ctx = file->private_data; |
8153a5ea | 768 | __poll_t mask; |
67207b96 | 769 | |
8b3d6663 | 770 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 771 | |
c9101bdb CH |
772 | /* |
773 | * For now keep this uninterruptible and also ignore the rule | |
774 | * that poll should not sleep. Will be fixed later. | |
775 | */ | |
776 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 777 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLIN | EPOLLRDNORM); |
3a843d7c | 778 | spu_release(ctx); |
67207b96 AB |
779 | |
780 | return mask; | |
781 | } | |
782 | ||
5dfe4c96 | 783 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
784 | .open = spufs_pipe_open, |
785 | .read = spufs_ibox_read, | |
786 | .poll = spufs_ibox_poll, | |
fc15351d | 787 | .llseek = no_llseek, |
67207b96 AB |
788 | }; |
789 | ||
790 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
791 | size_t len, loff_t *pos) | |
792 | { | |
8b3d6663 | 793 | struct spu_context *ctx = file->private_data; |
c9101bdb | 794 | ssize_t ret; |
67207b96 AB |
795 | u32 ibox_stat; |
796 | ||
797 | if (len < 4) | |
798 | return -EINVAL; | |
799 | ||
c9101bdb CH |
800 | ret = spu_acquire(ctx); |
801 | if (ret) | |
802 | return ret; | |
8b3d6663 AB |
803 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
804 | spu_release(ctx); | |
67207b96 AB |
805 | |
806 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
807 | return -EFAULT; | |
808 | ||
809 | return 4; | |
810 | } | |
811 | ||
5dfe4c96 | 812 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
813 | .open = spufs_pipe_open, |
814 | .read = spufs_ibox_stat_read, | |
fc15351d | 815 | .llseek = no_llseek, |
67207b96 AB |
816 | }; |
817 | ||
818 | /* low-level mailbox write */ | |
8b3d6663 | 819 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 820 | { |
8b3d6663 AB |
821 | return ctx->ops->wbox_write(ctx, data); |
822 | } | |
67207b96 | 823 | |
8b3d6663 AB |
824 | /* interrupt-level wbox callback function. */ |
825 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 826 | { |
8b3d6663 AB |
827 | struct spu_context *ctx = spu->ctx; |
828 | ||
7d7be3aa AV |
829 | if (ctx) |
830 | wake_up_all(&ctx->wbox_wq); | |
67207b96 AB |
831 | } |
832 | ||
cdcc89bb AB |
833 | /* |
834 | * Write as many bytes to the interrupt mailbox as possible, until | |
835 | * one of the conditions becomes true: | |
836 | * | |
837 | * - the mailbox is full | |
838 | * - end of the user provided buffer | |
839 | * - end of the mapped area | |
840 | * | |
841 | * If the file is opened without O_NONBLOCK, we wait here until | |
027dfac6 | 842 | * space is available, but return when we have been able to |
cdcc89bb AB |
843 | * write something. |
844 | */ | |
67207b96 AB |
845 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
846 | size_t len, loff_t *pos) | |
847 | { | |
8b3d6663 | 848 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
849 | u32 wbox_data, __user *udata; |
850 | ssize_t count; | |
67207b96 AB |
851 | |
852 | if (len < 4) | |
853 | return -EINVAL; | |
854 | ||
cdcc89bb AB |
855 | udata = (void __user *)buf; |
856 | if (!access_ok(VERIFY_READ, buf, len)) | |
857 | return -EFAULT; | |
858 | ||
859 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
860 | return -EFAULT; |
861 | ||
c9101bdb CH |
862 | count = spu_acquire(ctx); |
863 | if (count) | |
eebead5b | 864 | goto out; |
8b3d6663 | 865 | |
cdcc89bb AB |
866 | /* |
867 | * make sure we can at least write one element, by waiting | |
868 | * in case of !O_NONBLOCK | |
869 | */ | |
870 | count = 0; | |
67207b96 | 871 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 872 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 873 | count = -EAGAIN; |
eebead5b CH |
874 | goto out_unlock; |
875 | } | |
67207b96 | 876 | } else { |
cdcc89bb | 877 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
878 | if (count) |
879 | goto out; | |
67207b96 AB |
880 | } |
881 | ||
8b3d6663 | 882 | |
96de0e25 | 883 | /* write as much as possible */ |
cdcc89bb AB |
884 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
885 | int ret; | |
886 | ret = __get_user(wbox_data, udata); | |
887 | if (ret) | |
888 | break; | |
889 | ||
890 | ret = spu_wbox_write(ctx, wbox_data); | |
891 | if (ret == 0) | |
892 | break; | |
893 | } | |
894 | ||
eebead5b | 895 | out_unlock: |
cdcc89bb | 896 | spu_release(ctx); |
eebead5b | 897 | out: |
cdcc89bb | 898 | return count; |
67207b96 AB |
899 | } |
900 | ||
8153a5ea | 901 | static __poll_t spufs_wbox_poll(struct file *file, poll_table *wait) |
67207b96 | 902 | { |
8b3d6663 | 903 | struct spu_context *ctx = file->private_data; |
8153a5ea | 904 | __poll_t mask; |
67207b96 | 905 | |
8b3d6663 | 906 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 907 | |
c9101bdb CH |
908 | /* |
909 | * For now keep this uninterruptible and also ignore the rule | |
910 | * that poll should not sleep. Will be fixed later. | |
911 | */ | |
912 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 913 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLOUT | EPOLLWRNORM); |
3a843d7c | 914 | spu_release(ctx); |
67207b96 AB |
915 | |
916 | return mask; | |
917 | } | |
918 | ||
5dfe4c96 | 919 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
920 | .open = spufs_pipe_open, |
921 | .write = spufs_wbox_write, | |
922 | .poll = spufs_wbox_poll, | |
fc15351d | 923 | .llseek = no_llseek, |
67207b96 AB |
924 | }; |
925 | ||
926 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
927 | size_t len, loff_t *pos) | |
928 | { | |
8b3d6663 | 929 | struct spu_context *ctx = file->private_data; |
c9101bdb | 930 | ssize_t ret; |
67207b96 AB |
931 | u32 wbox_stat; |
932 | ||
933 | if (len < 4) | |
934 | return -EINVAL; | |
935 | ||
c9101bdb CH |
936 | ret = spu_acquire(ctx); |
937 | if (ret) | |
938 | return ret; | |
8b3d6663 AB |
939 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
940 | spu_release(ctx); | |
67207b96 AB |
941 | |
942 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
943 | return -EFAULT; | |
944 | ||
945 | return 4; | |
946 | } | |
947 | ||
5dfe4c96 | 948 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
949 | .open = spufs_pipe_open, |
950 | .read = spufs_wbox_stat_read, | |
fc15351d | 951 | .llseek = no_llseek, |
67207b96 AB |
952 | }; |
953 | ||
6df10a82 MN |
954 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
955 | { | |
956 | struct spufs_inode_info *i = SPUFS_I(inode); | |
957 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 958 | |
47d3a5fa | 959 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 960 | file->private_data = ctx; |
43c2bbd9 CH |
961 | if (!i->i_openers++) |
962 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 963 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
964 | return nonseekable_open(inode, file); |
965 | } | |
966 | ||
43c2bbd9 CH |
967 | static int |
968 | spufs_signal1_release(struct inode *inode, struct file *file) | |
969 | { | |
970 | struct spufs_inode_info *i = SPUFS_I(inode); | |
971 | struct spu_context *ctx = i->i_ctx; | |
972 | ||
47d3a5fa | 973 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
974 | if (!--i->i_openers) |
975 | ctx->signal1 = NULL; | |
47d3a5fa | 976 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
977 | return 0; |
978 | } | |
979 | ||
bf1ab978 | 980 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
981 | size_t len, loff_t *pos) |
982 | { | |
17f88ceb | 983 | int ret = 0; |
67207b96 AB |
984 | u32 data; |
985 | ||
67207b96 AB |
986 | if (len < 4) |
987 | return -EINVAL; | |
988 | ||
17f88ceb DGM |
989 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
990 | data = ctx->csa.spu_chnldata_RW[3]; | |
991 | ret = 4; | |
992 | } | |
8b3d6663 | 993 | |
17f88ceb DGM |
994 | if (!ret) |
995 | goto out; | |
996 | ||
67207b96 AB |
997 | if (copy_to_user(buf, &data, 4)) |
998 | return -EFAULT; | |
999 | ||
17f88ceb DGM |
1000 | out: |
1001 | return ret; | |
67207b96 AB |
1002 | } |
1003 | ||
bf1ab978 DGM |
1004 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1005 | size_t len, loff_t *pos) | |
1006 | { | |
1007 | int ret; | |
1008 | struct spu_context *ctx = file->private_data; | |
1009 | ||
c9101bdb CH |
1010 | ret = spu_acquire_saved(ctx); |
1011 | if (ret) | |
1012 | return ret; | |
bf1ab978 | 1013 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1014 | spu_release_saved(ctx); |
bf1ab978 DGM |
1015 | |
1016 | return ret; | |
1017 | } | |
1018 | ||
67207b96 AB |
1019 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1020 | size_t len, loff_t *pos) | |
1021 | { | |
1022 | struct spu_context *ctx; | |
c9101bdb | 1023 | ssize_t ret; |
67207b96 AB |
1024 | u32 data; |
1025 | ||
1026 | ctx = file->private_data; | |
67207b96 AB |
1027 | |
1028 | if (len < 4) | |
1029 | return -EINVAL; | |
1030 | ||
1031 | if (copy_from_user(&data, buf, 4)) | |
1032 | return -EFAULT; | |
1033 | ||
c9101bdb CH |
1034 | ret = spu_acquire(ctx); |
1035 | if (ret) | |
1036 | return ret; | |
8b3d6663 AB |
1037 | ctx->ops->signal1_write(ctx, data); |
1038 | spu_release(ctx); | |
67207b96 AB |
1039 | |
1040 | return 4; | |
1041 | } | |
1042 | ||
b1e2270f | 1043 | static int |
11bac800 | 1044 | spufs_signal1_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1045 | { |
87ff6090 | 1046 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1047 | return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1048 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1049 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1050 | * signal 1 and 2 area | |
1051 | */ | |
11bac800 | 1052 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1053 | #else |
1054 | #error unsupported page size | |
1055 | #endif | |
6df10a82 MN |
1056 | } |
1057 | ||
f0f37e2f | 1058 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1059 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1060 | }; |
1061 | ||
1062 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1063 | { | |
1064 | if (!(vma->vm_flags & VM_SHARED)) | |
1065 | return -EINVAL; | |
1066 | ||
78bde53e | 1067 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1068 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1069 | |
1070 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1071 | return 0; | |
1072 | } | |
6df10a82 | 1073 | |
5dfe4c96 | 1074 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1075 | .open = spufs_signal1_open, |
43c2bbd9 | 1076 | .release = spufs_signal1_release, |
67207b96 AB |
1077 | .read = spufs_signal1_read, |
1078 | .write = spufs_signal1_write, | |
6df10a82 | 1079 | .mmap = spufs_signal1_mmap, |
fc15351d | 1080 | .llseek = no_llseek, |
67207b96 AB |
1081 | }; |
1082 | ||
d054b36f JK |
1083 | static const struct file_operations spufs_signal1_nosched_fops = { |
1084 | .open = spufs_signal1_open, | |
1085 | .release = spufs_signal1_release, | |
1086 | .write = spufs_signal1_write, | |
1087 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1088 | .llseek = no_llseek, |
d054b36f JK |
1089 | }; |
1090 | ||
6df10a82 MN |
1091 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1092 | { | |
1093 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1094 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1095 | |
47d3a5fa | 1096 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1097 | file->private_data = ctx; |
43c2bbd9 CH |
1098 | if (!i->i_openers++) |
1099 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1100 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1101 | return nonseekable_open(inode, file); |
1102 | } | |
1103 | ||
43c2bbd9 CH |
1104 | static int |
1105 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1106 | { | |
1107 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1108 | struct spu_context *ctx = i->i_ctx; | |
1109 | ||
47d3a5fa | 1110 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1111 | if (!--i->i_openers) |
1112 | ctx->signal2 = NULL; | |
47d3a5fa | 1113 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1114 | return 0; |
1115 | } | |
1116 | ||
bf1ab978 | 1117 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1118 | size_t len, loff_t *pos) |
1119 | { | |
17f88ceb | 1120 | int ret = 0; |
67207b96 AB |
1121 | u32 data; |
1122 | ||
67207b96 AB |
1123 | if (len < 4) |
1124 | return -EINVAL; | |
1125 | ||
17f88ceb DGM |
1126 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1127 | data = ctx->csa.spu_chnldata_RW[4]; | |
1128 | ret = 4; | |
1129 | } | |
8b3d6663 | 1130 | |
17f88ceb DGM |
1131 | if (!ret) |
1132 | goto out; | |
1133 | ||
67207b96 AB |
1134 | if (copy_to_user(buf, &data, 4)) |
1135 | return -EFAULT; | |
1136 | ||
17f88ceb | 1137 | out: |
bf1ab978 DGM |
1138 | return ret; |
1139 | } | |
1140 | ||
1141 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1142 | size_t len, loff_t *pos) | |
1143 | { | |
1144 | struct spu_context *ctx = file->private_data; | |
1145 | int ret; | |
1146 | ||
c9101bdb CH |
1147 | ret = spu_acquire_saved(ctx); |
1148 | if (ret) | |
1149 | return ret; | |
bf1ab978 | 1150 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1151 | spu_release_saved(ctx); |
bf1ab978 DGM |
1152 | |
1153 | return ret; | |
67207b96 AB |
1154 | } |
1155 | ||
1156 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1157 | size_t len, loff_t *pos) | |
1158 | { | |
1159 | struct spu_context *ctx; | |
c9101bdb | 1160 | ssize_t ret; |
67207b96 AB |
1161 | u32 data; |
1162 | ||
1163 | ctx = file->private_data; | |
67207b96 AB |
1164 | |
1165 | if (len < 4) | |
1166 | return -EINVAL; | |
1167 | ||
1168 | if (copy_from_user(&data, buf, 4)) | |
1169 | return -EFAULT; | |
1170 | ||
c9101bdb CH |
1171 | ret = spu_acquire(ctx); |
1172 | if (ret) | |
1173 | return ret; | |
8b3d6663 AB |
1174 | ctx->ops->signal2_write(ctx, data); |
1175 | spu_release(ctx); | |
67207b96 AB |
1176 | |
1177 | return 4; | |
1178 | } | |
1179 | ||
27d5bf2a | 1180 | #if SPUFS_MMAP_4K |
b1e2270f | 1181 | static int |
11bac800 | 1182 | spufs_signal2_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1183 | { |
87ff6090 | 1184 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1185 | return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1186 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1187 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1188 | * signal 1 and 2 area | |
1189 | */ | |
11bac800 | 1190 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1191 | #else |
1192 | #error unsupported page size | |
1193 | #endif | |
6df10a82 MN |
1194 | } |
1195 | ||
f0f37e2f | 1196 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1197 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1198 | }; |
1199 | ||
1200 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1201 | { | |
1202 | if (!(vma->vm_flags & VM_SHARED)) | |
1203 | return -EINVAL; | |
1204 | ||
78bde53e | 1205 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1206 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1207 | |
1208 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1209 | return 0; | |
1210 | } | |
27d5bf2a BH |
1211 | #else /* SPUFS_MMAP_4K */ |
1212 | #define spufs_signal2_mmap NULL | |
1213 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1214 | |
5dfe4c96 | 1215 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1216 | .open = spufs_signal2_open, |
43c2bbd9 | 1217 | .release = spufs_signal2_release, |
67207b96 AB |
1218 | .read = spufs_signal2_read, |
1219 | .write = spufs_signal2_write, | |
6df10a82 | 1220 | .mmap = spufs_signal2_mmap, |
fc15351d | 1221 | .llseek = no_llseek, |
67207b96 AB |
1222 | }; |
1223 | ||
d054b36f JK |
1224 | static const struct file_operations spufs_signal2_nosched_fops = { |
1225 | .open = spufs_signal2_open, | |
1226 | .release = spufs_signal2_release, | |
1227 | .write = spufs_signal2_write, | |
1228 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1229 | .llseek = no_llseek, |
d054b36f JK |
1230 | }; |
1231 | ||
104f0cc2 ME |
1232 | /* |
1233 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1234 | * work of acquiring (or not) the SPU context before calling through | |
1235 | * to the actual get routine. The set routine is called directly. | |
1236 | */ | |
1237 | #define SPU_ATTR_NOACQUIRE 0 | |
1238 | #define SPU_ATTR_ACQUIRE 1 | |
1239 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1240 | ||
1241 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1242 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1243 | { \ |
1244 | struct spu_context *ctx = data; \ | |
c9101bdb | 1245 | int ret = 0; \ |
104f0cc2 ME |
1246 | \ |
1247 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1248 | ret = spu_acquire(ctx); \ |
1249 | if (ret) \ | |
1250 | return ret; \ | |
197b1a82 | 1251 | *val = __get(ctx); \ |
104f0cc2 ME |
1252 | spu_release(ctx); \ |
1253 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1254 | ret = spu_acquire_saved(ctx); \ |
1255 | if (ret) \ | |
1256 | return ret; \ | |
197b1a82 | 1257 | *val = __get(ctx); \ |
104f0cc2 ME |
1258 | spu_release_saved(ctx); \ |
1259 | } else \ | |
197b1a82 | 1260 | *val = __get(ctx); \ |
104f0cc2 | 1261 | \ |
197b1a82 | 1262 | return 0; \ |
104f0cc2 | 1263 | } \ |
197b1a82 | 1264 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1265 | |
197b1a82 | 1266 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1267 | { |
1268 | struct spu_context *ctx = data; | |
c9101bdb | 1269 | int ret; |
67207b96 | 1270 | |
c9101bdb CH |
1271 | ret = spu_acquire(ctx); |
1272 | if (ret) | |
1273 | return ret; | |
8b3d6663 AB |
1274 | ctx->ops->signal1_type_set(ctx, val); |
1275 | spu_release(ctx); | |
197b1a82 CH |
1276 | |
1277 | return 0; | |
67207b96 AB |
1278 | } |
1279 | ||
104f0cc2 | 1280 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1281 | { |
bf1ab978 DGM |
1282 | return ctx->ops->signal1_type_get(ctx); |
1283 | } | |
104f0cc2 | 1284 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1285 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1286 | |
67207b96 | 1287 | |
197b1a82 | 1288 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1289 | { |
1290 | struct spu_context *ctx = data; | |
c9101bdb | 1291 | int ret; |
67207b96 | 1292 | |
c9101bdb CH |
1293 | ret = spu_acquire(ctx); |
1294 | if (ret) | |
1295 | return ret; | |
8b3d6663 AB |
1296 | ctx->ops->signal2_type_set(ctx, val); |
1297 | spu_release(ctx); | |
197b1a82 CH |
1298 | |
1299 | return 0; | |
67207b96 AB |
1300 | } |
1301 | ||
104f0cc2 | 1302 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1303 | { |
bf1ab978 DGM |
1304 | return ctx->ops->signal2_type_get(ctx); |
1305 | } | |
104f0cc2 | 1306 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1307 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1308 | |
27d5bf2a | 1309 | #if SPUFS_MMAP_4K |
b1e2270f | 1310 | static int |
11bac800 | 1311 | spufs_mss_mmap_fault(struct vm_fault *vmf) |
d9379c4b | 1312 | { |
11bac800 | 1313 | return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b | 1314 | } |
1315 | ||
f0f37e2f | 1316 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1317 | .fault = spufs_mss_mmap_fault, |
d9379c4b | 1318 | }; |
1319 | ||
1320 | /* | |
1321 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b | 1322 | */ |
1323 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1324 | { | |
1325 | if (!(vma->vm_flags & VM_SHARED)) | |
1326 | return -EINVAL; | |
1327 | ||
78bde53e | 1328 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1329 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b | 1330 | |
1331 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1332 | return 0; | |
1333 | } | |
27d5bf2a BH |
1334 | #else /* SPUFS_MMAP_4K */ |
1335 | #define spufs_mss_mmap NULL | |
1336 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b | 1337 | |
1338 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1339 | { | |
1340 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1341 | struct spu_context *ctx = i->i_ctx; |
d9379c4b | 1342 | |
1343 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1344 | |
47d3a5fa | 1345 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1346 | if (!i->i_openers++) |
1347 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1348 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b | 1349 | return nonseekable_open(inode, file); |
1350 | } | |
1351 | ||
43c2bbd9 CH |
1352 | static int |
1353 | spufs_mss_release(struct inode *inode, struct file *file) | |
1354 | { | |
1355 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1356 | struct spu_context *ctx = i->i_ctx; | |
1357 | ||
47d3a5fa | 1358 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1359 | if (!--i->i_openers) |
1360 | ctx->mss = NULL; | |
47d3a5fa | 1361 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1362 | return 0; |
1363 | } | |
1364 | ||
5dfe4c96 | 1365 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1366 | .open = spufs_mss_open, |
43c2bbd9 | 1367 | .release = spufs_mss_release, |
d9379c4b | 1368 | .mmap = spufs_mss_mmap, |
fc15351d | 1369 | .llseek = no_llseek, |
27d5bf2a BH |
1370 | }; |
1371 | ||
b1e2270f | 1372 | static int |
11bac800 | 1373 | spufs_psmap_mmap_fault(struct vm_fault *vmf) |
27d5bf2a | 1374 | { |
11bac800 | 1375 | return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1376 | } |
1377 | ||
f0f37e2f | 1378 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1379 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1380 | }; |
1381 | ||
1382 | /* | |
1383 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1384 | */ | |
1385 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1386 | { | |
1387 | if (!(vma->vm_flags & VM_SHARED)) | |
1388 | return -EINVAL; | |
1389 | ||
78bde53e | 1390 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1391 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1392 | |
1393 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1398 | { | |
1399 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1400 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1401 | |
47d3a5fa | 1402 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1403 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1404 | if (!i->i_openers++) |
1405 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1406 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1407 | return nonseekable_open(inode, file); |
1408 | } | |
1409 | ||
43c2bbd9 CH |
1410 | static int |
1411 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1412 | { | |
1413 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1414 | struct spu_context *ctx = i->i_ctx; | |
1415 | ||
47d3a5fa | 1416 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1417 | if (!--i->i_openers) |
1418 | ctx->psmap = NULL; | |
47d3a5fa | 1419 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1420 | return 0; |
1421 | } | |
1422 | ||
5dfe4c96 | 1423 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1424 | .open = spufs_psmap_open, |
43c2bbd9 | 1425 | .release = spufs_psmap_release, |
27d5bf2a | 1426 | .mmap = spufs_psmap_mmap, |
fc15351d | 1427 | .llseek = no_llseek, |
d9379c4b | 1428 | }; |
1429 | ||
1430 | ||
27d5bf2a | 1431 | #if SPUFS_MMAP_4K |
b1e2270f | 1432 | static int |
11bac800 | 1433 | spufs_mfc_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1434 | { |
11bac800 | 1435 | return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1436 | } |
1437 | ||
f0f37e2f | 1438 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1439 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1440 | }; |
1441 | ||
1442 | /* | |
1443 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1444 | */ |
1445 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1446 | { | |
1447 | if (!(vma->vm_flags & VM_SHARED)) | |
1448 | return -EINVAL; | |
1449 | ||
78bde53e | 1450 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1451 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1452 | |
1453 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1454 | return 0; | |
1455 | } | |
27d5bf2a BH |
1456 | #else /* SPUFS_MMAP_4K */ |
1457 | #define spufs_mfc_mmap NULL | |
1458 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1459 | |
1460 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1461 | { | |
1462 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1463 | struct spu_context *ctx = i->i_ctx; | |
1464 | ||
1465 | /* we don't want to deal with DMA into other processes */ | |
1466 | if (ctx->owner != current->mm) | |
1467 | return -EINVAL; | |
1468 | ||
1469 | if (atomic_read(&inode->i_count) != 1) | |
1470 | return -EBUSY; | |
1471 | ||
47d3a5fa | 1472 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1473 | file->private_data = ctx; |
43c2bbd9 CH |
1474 | if (!i->i_openers++) |
1475 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1476 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1477 | return nonseekable_open(inode, file); |
1478 | } | |
1479 | ||
43c2bbd9 CH |
1480 | static int |
1481 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1482 | { | |
1483 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1484 | struct spu_context *ctx = i->i_ctx; | |
1485 | ||
47d3a5fa | 1486 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1487 | if (!--i->i_openers) |
1488 | ctx->mfc = NULL; | |
47d3a5fa | 1489 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1490 | return 0; |
1491 | } | |
1492 | ||
a33a7d73 AB |
1493 | /* interrupt-level mfc callback function. */ |
1494 | void spufs_mfc_callback(struct spu *spu) | |
1495 | { | |
1496 | struct spu_context *ctx = spu->ctx; | |
1497 | ||
7d7be3aa AV |
1498 | if (ctx) |
1499 | wake_up_all(&ctx->mfc_wq); | |
a33a7d73 AB |
1500 | } |
1501 | ||
1502 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1503 | { | |
1504 | /* See if there is one tag group is complete */ | |
1505 | /* FIXME we need locking around tagwait */ | |
1506 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1507 | ctx->tagwait &= ~*status; | |
1508 | if (*status) | |
1509 | return 1; | |
1510 | ||
1511 | /* enable interrupt waiting for any tag group, | |
1512 | may silently fail if interrupts are already enabled */ | |
1513 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1514 | return 0; | |
1515 | } | |
1516 | ||
1517 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1518 | size_t size, loff_t *pos) | |
1519 | { | |
1520 | struct spu_context *ctx = file->private_data; | |
1521 | int ret = -EINVAL; | |
1522 | u32 status; | |
1523 | ||
1524 | if (size != 4) | |
1525 | goto out; | |
1526 | ||
c9101bdb CH |
1527 | ret = spu_acquire(ctx); |
1528 | if (ret) | |
1529 | return ret; | |
1530 | ||
1531 | ret = -EINVAL; | |
a33a7d73 AB |
1532 | if (file->f_flags & O_NONBLOCK) { |
1533 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1534 | if (!(status & ctx->tagwait)) | |
1535 | ret = -EAGAIN; | |
1536 | else | |
c9101bdb | 1537 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1538 | ctx->tagwait &= ~status; |
1539 | } else { | |
1540 | ret = spufs_wait(ctx->mfc_wq, | |
1541 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1542 | if (ret) |
1543 | goto out; | |
a33a7d73 AB |
1544 | } |
1545 | spu_release(ctx); | |
1546 | ||
a33a7d73 AB |
1547 | ret = 4; |
1548 | if (copy_to_user(buffer, &status, 4)) | |
1549 | ret = -EFAULT; | |
1550 | ||
1551 | out: | |
1552 | return ret; | |
1553 | } | |
1554 | ||
1555 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1556 | { | |
9477e455 | 1557 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1558 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1559 | ||
1560 | switch (cmd->cmd) { | |
1561 | case MFC_PUT_CMD: | |
1562 | case MFC_PUTF_CMD: | |
1563 | case MFC_PUTB_CMD: | |
1564 | case MFC_GET_CMD: | |
1565 | case MFC_GETF_CMD: | |
1566 | case MFC_GETB_CMD: | |
1567 | break; | |
1568 | default: | |
1569 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1570 | return -EIO; | |
1571 | } | |
1572 | ||
1573 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1574 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1575 | cmd->ea, cmd->lsa); |
1576 | return -EIO; | |
1577 | } | |
1578 | ||
1579 | switch (cmd->size & 0xf) { | |
1580 | case 1: | |
1581 | break; | |
1582 | case 2: | |
1583 | if (cmd->lsa & 1) | |
1584 | goto error; | |
1585 | break; | |
1586 | case 4: | |
1587 | if (cmd->lsa & 3) | |
1588 | goto error; | |
1589 | break; | |
1590 | case 8: | |
1591 | if (cmd->lsa & 7) | |
1592 | goto error; | |
1593 | break; | |
1594 | case 0: | |
1595 | if (cmd->lsa & 15) | |
1596 | goto error; | |
1597 | break; | |
1598 | error: | |
1599 | default: | |
1600 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1601 | cmd->lsa & 0xf, cmd->size); | |
1602 | return -EIO; | |
1603 | } | |
1604 | ||
1605 | if (cmd->size > 16 * 1024) { | |
1606 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1607 | return -EIO; | |
1608 | } | |
1609 | ||
1610 | if (cmd->tag & 0xfff0) { | |
1611 | /* we reserve the higher tag numbers for kernel use */ | |
1612 | pr_debug("invalid DMA tag\n"); | |
1613 | return -EIO; | |
1614 | } | |
1615 | ||
1616 | if (cmd->class) { | |
1617 | /* not supported in this version */ | |
1618 | pr_debug("invalid DMA class\n"); | |
1619 | return -EIO; | |
1620 | } | |
1621 | ||
1622 | return 0; | |
1623 | } | |
1624 | ||
1625 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1626 | struct mfc_dma_command cmd, | |
1627 | int *error) | |
1628 | { | |
1629 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1630 | if (*error == -EAGAIN) { | |
1631 | /* wait for any tag group to complete | |
1632 | so we have space for the new command */ | |
1633 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1634 | /* try again, because the queue might be | |
1635 | empty again */ | |
1636 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1637 | if (*error == -EAGAIN) | |
1638 | return 0; | |
1639 | } | |
1640 | return 1; | |
1641 | } | |
1642 | ||
1643 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1644 | size_t size, loff_t *pos) | |
1645 | { | |
1646 | struct spu_context *ctx = file->private_data; | |
1647 | struct mfc_dma_command cmd; | |
1648 | int ret = -EINVAL; | |
1649 | ||
1650 | if (size != sizeof cmd) | |
1651 | goto out; | |
1652 | ||
1653 | ret = -EFAULT; | |
1654 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1655 | goto out; | |
1656 | ||
1657 | ret = spufs_check_valid_dma(&cmd); | |
1658 | if (ret) | |
1659 | goto out; | |
1660 | ||
c9101bdb CH |
1661 | ret = spu_acquire(ctx); |
1662 | if (ret) | |
1663 | goto out; | |
1664 | ||
33bfd7a7 | 1665 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1666 | if (ret) |
1667 | goto out; | |
1668 | ||
a33a7d73 AB |
1669 | if (file->f_flags & O_NONBLOCK) { |
1670 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1671 | } else { | |
1672 | int status; | |
1673 | ret = spufs_wait(ctx->mfc_wq, | |
1674 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1675 | if (ret) |
1676 | goto out; | |
a33a7d73 AB |
1677 | if (status) |
1678 | ret = status; | |
1679 | } | |
a33a7d73 AB |
1680 | |
1681 | if (ret) | |
933b0e35 | 1682 | goto out_unlock; |
a33a7d73 AB |
1683 | |
1684 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1685 | ret = size; |
a33a7d73 | 1686 | |
933b0e35 KA |
1687 | out_unlock: |
1688 | spu_release(ctx); | |
a33a7d73 AB |
1689 | out: |
1690 | return ret; | |
1691 | } | |
1692 | ||
8153a5ea | 1693 | static __poll_t spufs_mfc_poll(struct file *file,poll_table *wait) |
a33a7d73 AB |
1694 | { |
1695 | struct spu_context *ctx = file->private_data; | |
1696 | u32 free_elements, tagstatus; | |
8153a5ea | 1697 | __poll_t mask; |
a33a7d73 | 1698 | |
933b0e35 KA |
1699 | poll_wait(file, &ctx->mfc_wq, wait); |
1700 | ||
c9101bdb CH |
1701 | /* |
1702 | * For now keep this uninterruptible and also ignore the rule | |
1703 | * that poll should not sleep. Will be fixed later. | |
1704 | */ | |
1705 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1706 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1707 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1708 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1709 | spu_release(ctx); | |
1710 | ||
a33a7d73 AB |
1711 | mask = 0; |
1712 | if (free_elements & 0xffff) | |
a9a08845 | 1713 | mask |= EPOLLOUT | EPOLLWRNORM; |
a33a7d73 | 1714 | if (tagstatus & ctx->tagwait) |
a9a08845 | 1715 | mask |= EPOLLIN | EPOLLRDNORM; |
a33a7d73 | 1716 | |
e48b1b45 | 1717 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1718 | free_elements, tagstatus, ctx->tagwait); |
1719 | ||
1720 | return mask; | |
1721 | } | |
1722 | ||
73b6af8a | 1723 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1724 | { |
1725 | struct spu_context *ctx = file->private_data; | |
1726 | int ret; | |
1727 | ||
c9101bdb CH |
1728 | ret = spu_acquire(ctx); |
1729 | if (ret) | |
eebead5b | 1730 | goto out; |
a33a7d73 AB |
1731 | #if 0 |
1732 | /* this currently hangs */ | |
1733 | ret = spufs_wait(ctx->mfc_wq, | |
1734 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1735 | if (ret) | |
1736 | goto out; | |
1737 | ret = spufs_wait(ctx->mfc_wq, | |
1738 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1739 | if (ret) |
1740 | goto out; | |
a33a7d73 AB |
1741 | #else |
1742 | ret = 0; | |
1743 | #endif | |
1744 | spu_release(ctx); | |
eebead5b | 1745 | out: |
a33a7d73 AB |
1746 | return ret; |
1747 | } | |
1748 | ||
02c24a82 JB |
1749 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1750 | { | |
496ad9aa | 1751 | struct inode *inode = file_inode(file); |
3b49c9a1 | 1752 | int err = file_write_and_wait_range(file, start, end); |
02c24a82 | 1753 | if (!err) { |
5955102c | 1754 | inode_lock(inode); |
02c24a82 | 1755 | err = spufs_mfc_flush(file, NULL); |
5955102c | 1756 | inode_unlock(inode); |
02c24a82 JB |
1757 | } |
1758 | return err; | |
a33a7d73 AB |
1759 | } |
1760 | ||
5dfe4c96 | 1761 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1762 | .open = spufs_mfc_open, |
43c2bbd9 | 1763 | .release = spufs_mfc_release, |
a33a7d73 AB |
1764 | .read = spufs_mfc_read, |
1765 | .write = spufs_mfc_write, | |
1766 | .poll = spufs_mfc_poll, | |
1767 | .flush = spufs_mfc_flush, | |
1768 | .fsync = spufs_mfc_fsync, | |
6df10a82 | 1769 | .mmap = spufs_mfc_mmap, |
fc15351d | 1770 | .llseek = no_llseek, |
a33a7d73 AB |
1771 | }; |
1772 | ||
197b1a82 | 1773 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1774 | { |
1775 | struct spu_context *ctx = data; | |
c9101bdb CH |
1776 | int ret; |
1777 | ||
1778 | ret = spu_acquire(ctx); | |
1779 | if (ret) | |
1780 | return ret; | |
8b3d6663 AB |
1781 | ctx->ops->npc_write(ctx, val); |
1782 | spu_release(ctx); | |
197b1a82 CH |
1783 | |
1784 | return 0; | |
67207b96 AB |
1785 | } |
1786 | ||
104f0cc2 | 1787 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1788 | { |
1789 | return ctx->ops->npc_read(ctx); | |
1790 | } | |
104f0cc2 ME |
1791 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1792 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1793 | |
197b1a82 | 1794 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1795 | { |
1796 | struct spu_context *ctx = data; | |
1797 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1798 | int ret; |
1799 | ||
1800 | ret = spu_acquire_saved(ctx); | |
1801 | if (ret) | |
1802 | return ret; | |
8b3d6663 | 1803 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1804 | spu_release_saved(ctx); |
197b1a82 CH |
1805 | |
1806 | return 0; | |
8b3d6663 AB |
1807 | } |
1808 | ||
104f0cc2 | 1809 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1810 | { |
8b3d6663 | 1811 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1812 | return lscsa->decr.slot[0]; |
1813 | } | |
104f0cc2 ME |
1814 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1815 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1816 | |
197b1a82 | 1817 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1818 | { |
1819 | struct spu_context *ctx = data; | |
c9101bdb CH |
1820 | int ret; |
1821 | ||
1822 | ret = spu_acquire_saved(ctx); | |
1823 | if (ret) | |
1824 | return ret; | |
d40a01d4 MN |
1825 | if (val) |
1826 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1827 | else | |
1828 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1829 | spu_release_saved(ctx); |
197b1a82 CH |
1830 | |
1831 | return 0; | |
8b3d6663 AB |
1832 | } |
1833 | ||
104f0cc2 | 1834 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1835 | { |
d40a01d4 MN |
1836 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1837 | return SPU_DECR_STATUS_RUNNING; | |
1838 | else | |
1839 | return 0; | |
bf1ab978 | 1840 | } |
104f0cc2 ME |
1841 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1842 | spufs_decr_status_set, "0x%llx\n", | |
1843 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1844 | |
197b1a82 | 1845 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1846 | { |
1847 | struct spu_context *ctx = data; | |
1848 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1849 | int ret; |
1850 | ||
1851 | ret = spu_acquire_saved(ctx); | |
1852 | if (ret) | |
1853 | return ret; | |
8b3d6663 | 1854 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1855 | spu_release_saved(ctx); |
197b1a82 CH |
1856 | |
1857 | return 0; | |
8b3d6663 AB |
1858 | } |
1859 | ||
104f0cc2 | 1860 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1861 | { |
8b3d6663 | 1862 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1863 | return lscsa->event_mask.slot[0]; |
1864 | } | |
1865 | ||
104f0cc2 ME |
1866 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1867 | spufs_event_mask_set, "0x%llx\n", | |
1868 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1869 | |
104f0cc2 | 1870 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1871 | { |
b9e3bd77 | 1872 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1873 | u64 stat; |
b9e3bd77 DGM |
1874 | stat = state->spu_chnlcnt_RW[0]; |
1875 | if (stat) | |
bf1ab978 DGM |
1876 | return state->spu_chnldata_RW[0]; |
1877 | return 0; | |
1878 | } | |
104f0cc2 ME |
1879 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1880 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1881 | |
197b1a82 | 1882 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1883 | { |
1884 | struct spu_context *ctx = data; | |
1885 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1886 | int ret; |
1887 | ||
1888 | ret = spu_acquire_saved(ctx); | |
1889 | if (ret) | |
1890 | return ret; | |
8b3d6663 | 1891 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1892 | spu_release_saved(ctx); |
197b1a82 CH |
1893 | |
1894 | return 0; | |
8b3d6663 AB |
1895 | } |
1896 | ||
104f0cc2 | 1897 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1898 | { |
8b3d6663 | 1899 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1900 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1901 | } |
104f0cc2 ME |
1902 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1903 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1904 | |
104f0cc2 | 1905 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1906 | { |
7b1a7014 | 1907 | u64 num; |
1908 | ||
7b1a7014 | 1909 | if (ctx->state == SPU_STATE_RUNNABLE) |
1910 | num = ctx->spu->number; | |
1911 | else | |
1912 | num = (unsigned int)-1; | |
7b1a7014 | 1913 | |
1914 | return num; | |
1915 | } | |
104f0cc2 ME |
1916 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1917 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1918 | |
104f0cc2 | 1919 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1920 | { |
1921 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1922 | return ctx->object_id; |
bf1ab978 DGM |
1923 | } |
1924 | ||
197b1a82 | 1925 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
1926 | { |
1927 | struct spu_context *ctx = data; | |
1928 | ctx->object_id = id; | |
197b1a82 CH |
1929 | |
1930 | return 0; | |
86767277 AB |
1931 | } |
1932 | ||
104f0cc2 ME |
1933 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1934 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1935 | |
104f0cc2 | 1936 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1937 | { |
bf1ab978 DGM |
1938 | return ctx->csa.priv2.spu_lslr_RW; |
1939 | } | |
104f0cc2 ME |
1940 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1941 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1942 | |
1943 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1944 | { | |
1945 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1946 | struct spu_context *ctx = i->i_ctx; | |
1947 | file->private_data = ctx; | |
1948 | return 0; | |
1949 | } | |
1950 | ||
cbe709c1 BH |
1951 | static int spufs_caps_show(struct seq_file *s, void *private) |
1952 | { | |
1953 | struct spu_context *ctx = s->private; | |
1954 | ||
1955 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
1956 | seq_puts(s, "sched\n"); | |
1957 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
1958 | seq_puts(s, "step\n"); | |
1959 | return 0; | |
1960 | } | |
1961 | ||
1962 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
1963 | { | |
1964 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
1965 | } | |
1966 | ||
1967 | static const struct file_operations spufs_caps_fops = { | |
1968 | .open = spufs_caps_open, | |
1969 | .read = seq_read, | |
1970 | .llseek = seq_lseek, | |
1971 | .release = single_release, | |
1972 | }; | |
1973 | ||
bf1ab978 DGM |
1974 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
1975 | char __user *buf, size_t len, loff_t *pos) | |
1976 | { | |
bf1ab978 DGM |
1977 | u32 data; |
1978 | ||
cbea9238 JK |
1979 | /* EOF if there's no entry in the mbox */ |
1980 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
1981 | return 0; | |
1982 | ||
1983 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
1984 | |
1985 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1986 | } | |
1987 | ||
69a2f00c DGM |
1988 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1989 | size_t len, loff_t *pos) | |
1990 | { | |
bf1ab978 | 1991 | int ret; |
69a2f00c | 1992 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
1993 | |
1994 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
1995 | return -EFAULT; | |
1996 | ||
c9101bdb CH |
1997 | ret = spu_acquire_saved(ctx); |
1998 | if (ret) | |
1999 | return ret; | |
69a2f00c | 2000 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2001 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2002 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2003 | spu_release_saved(ctx); |
69a2f00c | 2004 | |
bf1ab978 | 2005 | return ret; |
69a2f00c DGM |
2006 | } |
2007 | ||
5dfe4c96 | 2008 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2009 | .open = spufs_info_open, |
2010 | .read = spufs_mbox_info_read, | |
2011 | .llseek = generic_file_llseek, | |
2012 | }; | |
2013 | ||
bf1ab978 DGM |
2014 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2015 | char __user *buf, size_t len, loff_t *pos) | |
2016 | { | |
bf1ab978 DGM |
2017 | u32 data; |
2018 | ||
cbea9238 JK |
2019 | /* EOF if there's no entry in the ibox */ |
2020 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2021 | return 0; | |
2022 | ||
2023 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2024 | |
2025 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2026 | } | |
2027 | ||
69a2f00c DGM |
2028 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2029 | size_t len, loff_t *pos) | |
2030 | { | |
2031 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2032 | int ret; |
69a2f00c DGM |
2033 | |
2034 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2035 | return -EFAULT; | |
2036 | ||
c9101bdb CH |
2037 | ret = spu_acquire_saved(ctx); |
2038 | if (ret) | |
2039 | return ret; | |
69a2f00c | 2040 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2041 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2042 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2043 | spu_release_saved(ctx); |
69a2f00c | 2044 | |
bf1ab978 | 2045 | return ret; |
69a2f00c DGM |
2046 | } |
2047 | ||
5dfe4c96 | 2048 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2049 | .open = spufs_info_open, |
2050 | .read = spufs_ibox_info_read, | |
2051 | .llseek = generic_file_llseek, | |
2052 | }; | |
2053 | ||
bf1ab978 DGM |
2054 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2055 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2056 | { |
69a2f00c DGM |
2057 | int i, cnt; |
2058 | u32 data[4]; | |
2059 | u32 wbox_stat; | |
2060 | ||
bf1ab978 DGM |
2061 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2062 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2063 | for (i = 0; i < cnt; i++) { | |
2064 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2065 | } | |
2066 | ||
2067 | return simple_read_from_buffer(buf, len, pos, &data, | |
2068 | cnt * sizeof(u32)); | |
2069 | } | |
2070 | ||
2071 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2072 | size_t len, loff_t *pos) | |
2073 | { | |
2074 | struct spu_context *ctx = file->private_data; | |
2075 | int ret; | |
2076 | ||
69a2f00c DGM |
2077 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2078 | return -EFAULT; | |
2079 | ||
c9101bdb CH |
2080 | ret = spu_acquire_saved(ctx); |
2081 | if (ret) | |
2082 | return ret; | |
69a2f00c | 2083 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2084 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2085 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2086 | spu_release_saved(ctx); |
69a2f00c | 2087 | |
bf1ab978 | 2088 | return ret; |
69a2f00c DGM |
2089 | } |
2090 | ||
5dfe4c96 | 2091 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2092 | .open = spufs_info_open, |
2093 | .read = spufs_wbox_info_read, | |
2094 | .llseek = generic_file_llseek, | |
2095 | }; | |
2096 | ||
bf1ab978 DGM |
2097 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2098 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2099 | { |
b9e3bd77 DGM |
2100 | struct spu_dma_info info; |
2101 | struct mfc_cq_sr *qp, *spuqp; | |
2102 | int i; | |
2103 | ||
b9e3bd77 DGM |
2104 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2105 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2106 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2107 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2108 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2109 | for (i = 0; i < 16; i++) { | |
2110 | qp = &info.dma_info_command_data[i]; | |
2111 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2112 | ||
2113 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2114 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2115 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2116 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2117 | } | |
b9e3bd77 DGM |
2118 | |
2119 | return simple_read_from_buffer(buf, len, pos, &info, | |
2120 | sizeof info); | |
2121 | } | |
2122 | ||
bf1ab978 DGM |
2123 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2124 | size_t len, loff_t *pos) | |
2125 | { | |
2126 | struct spu_context *ctx = file->private_data; | |
2127 | int ret; | |
2128 | ||
2129 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2130 | return -EFAULT; | |
2131 | ||
c9101bdb CH |
2132 | ret = spu_acquire_saved(ctx); |
2133 | if (ret) | |
2134 | return ret; | |
bf1ab978 DGM |
2135 | spin_lock(&ctx->csa.register_lock); |
2136 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2137 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2138 | spu_release_saved(ctx); |
bf1ab978 DGM |
2139 | |
2140 | return ret; | |
2141 | } | |
2142 | ||
5dfe4c96 | 2143 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2144 | .open = spufs_info_open, |
2145 | .read = spufs_dma_info_read, | |
fc15351d | 2146 | .llseek = no_llseek, |
b9e3bd77 DGM |
2147 | }; |
2148 | ||
bf1ab978 DGM |
2149 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2150 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2151 | { |
b9e3bd77 | 2152 | struct spu_proxydma_info info; |
b9e3bd77 | 2153 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2154 | int ret = sizeof info; |
b9e3bd77 DGM |
2155 | int i; |
2156 | ||
2157 | if (len < ret) | |
2158 | return -EINVAL; | |
2159 | ||
2160 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2161 | return -EFAULT; | |
2162 | ||
b9e3bd77 DGM |
2163 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2164 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2165 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2166 | for (i = 0; i < 8; i++) { | |
2167 | qp = &info.proxydma_info_command_data[i]; | |
2168 | puqp = &ctx->csa.priv2.puq[i]; | |
2169 | ||
2170 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2171 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2172 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2173 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2174 | } | |
bf1ab978 DGM |
2175 | |
2176 | return simple_read_from_buffer(buf, len, pos, &info, | |
2177 | sizeof info); | |
2178 | } | |
2179 | ||
2180 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2181 | size_t len, loff_t *pos) | |
2182 | { | |
2183 | struct spu_context *ctx = file->private_data; | |
2184 | int ret; | |
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_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2191 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2192 | spu_release_saved(ctx); |
b9e3bd77 | 2193 | |
b9e3bd77 DGM |
2194 | return ret; |
2195 | } | |
2196 | ||
5dfe4c96 | 2197 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2198 | .open = spufs_info_open, |
2199 | .read = spufs_proxydma_info_read, | |
fc15351d | 2200 | .llseek = no_llseek, |
b9e3bd77 DGM |
2201 | }; |
2202 | ||
476273ad CH |
2203 | static int spufs_show_tid(struct seq_file *s, void *private) |
2204 | { | |
2205 | struct spu_context *ctx = s->private; | |
2206 | ||
2207 | seq_printf(s, "%d\n", ctx->tid); | |
2208 | return 0; | |
2209 | } | |
2210 | ||
2211 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2212 | { | |
2213 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2214 | } | |
2215 | ||
2216 | static const struct file_operations spufs_tid_fops = { | |
2217 | .open = spufs_tid_open, | |
2218 | .read = seq_read, | |
2219 | .llseek = seq_lseek, | |
2220 | .release = single_release, | |
2221 | }; | |
2222 | ||
e9f8a0b6 CH |
2223 | static const char *ctx_state_names[] = { |
2224 | "user", "system", "iowait", "loaded" | |
2225 | }; | |
2226 | ||
2227 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2228 | enum spu_utilization_state state) |
e9f8a0b6 | 2229 | { |
27ec41d3 | 2230 | unsigned long long time = ctx->stats.times[state]; |
e9f8a0b6 | 2231 | |
27ec41d3 AD |
2232 | /* |
2233 | * In general, utilization statistics are updated by the controlling | |
2234 | * thread as the spu context moves through various well defined | |
2235 | * state transitions, but if the context is lazily loaded its | |
2236 | * utilization statistics are not updated as the controlling thread | |
2237 | * is not tightly coupled with the execution of the spu context. We | |
2238 | * calculate and apply the time delta from the last recorded state | |
2239 | * of the spu context. | |
2240 | */ | |
2241 | if (ctx->spu && ctx->stats.util_state == state) { | |
f2dec1ea | 2242 | time += ktime_get_ns() - ctx->stats.tstamp; |
27ec41d3 | 2243 | } |
e9f8a0b6 | 2244 | |
27ec41d3 | 2245 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2246 | } |
2247 | ||
2248 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2249 | { | |
2250 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2251 | ||
2252 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2253 | slb_flts += (ctx->spu->stats.slb_flt - | |
2254 | ctx->stats.slb_flt_base); | |
2255 | } | |
2256 | ||
2257 | return slb_flts; | |
2258 | } | |
2259 | ||
2260 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2261 | { | |
2262 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2263 | ||
2264 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2265 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2266 | ctx->stats.class2_intr_base); | |
2267 | } | |
2268 | ||
2269 | return class2_intrs; | |
2270 | } | |
2271 | ||
2272 | ||
2273 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2274 | { | |
2275 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2276 | int ret; |
2277 | ||
2278 | ret = spu_acquire(ctx); | |
2279 | if (ret) | |
2280 | return ret; | |
e9f8a0b6 | 2281 | |
e9f8a0b6 CH |
2282 | seq_printf(s, "%s %llu %llu %llu %llu " |
2283 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2284 | ctx_state_names[ctx->stats.util_state], |
2285 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2286 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2287 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2288 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2289 | ctx->stats.vol_ctx_switch, |
2290 | ctx->stats.invol_ctx_switch, | |
2291 | spufs_slb_flts(ctx), | |
2292 | ctx->stats.hash_flt, | |
2293 | ctx->stats.min_flt, | |
2294 | ctx->stats.maj_flt, | |
2295 | spufs_class2_intrs(ctx), | |
2296 | ctx->stats.libassist); | |
2297 | spu_release(ctx); | |
2298 | return 0; | |
2299 | } | |
2300 | ||
2301 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2302 | { | |
2303 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2304 | } | |
2305 | ||
2306 | static const struct file_operations spufs_stat_fops = { | |
2307 | .open = spufs_stat_open, | |
2308 | .read = seq_read, | |
2309 | .llseek = seq_lseek, | |
2310 | .release = single_release, | |
2311 | }; | |
2312 | ||
5158e9b5 CH |
2313 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2314 | { | |
2315 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2316 | SWITCH_LOG_BUFSIZE; | |
2317 | } | |
2318 | ||
2319 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2320 | { | |
2321 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2322 | } | |
2323 | ||
2324 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2325 | { | |
2326 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2327 | int rc; |
2328 | ||
2329 | rc = spu_acquire(ctx); | |
2330 | if (rc) | |
2331 | return rc; | |
5158e9b5 | 2332 | |
5158e9b5 | 2333 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2334 | rc = -EBUSY; |
2335 | goto out; | |
5158e9b5 | 2336 | } |
f5ed0eb6 | 2337 | |
837ef884 | 2338 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2339 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2340 | GFP_KERNEL); | |
2341 | ||
2342 | if (!ctx->switch_log) { | |
2343 | rc = -ENOMEM; | |
2344 | goto out; | |
2345 | } | |
2346 | ||
837ef884 | 2347 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2348 | init_waitqueue_head(&ctx->switch_log->wait); |
2349 | rc = 0; | |
2350 | ||
2351 | out: | |
2352 | spu_release(ctx); | |
2353 | return rc; | |
2354 | } | |
2355 | ||
2356 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2357 | { | |
2358 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2359 | int rc; | |
2360 | ||
2361 | rc = spu_acquire(ctx); | |
2362 | if (rc) | |
2363 | return rc; | |
2364 | ||
2365 | kfree(ctx->switch_log); | |
2366 | ctx->switch_log = NULL; | |
2367 | spu_release(ctx); | |
5158e9b5 CH |
2368 | |
2369 | return 0; | |
5158e9b5 CH |
2370 | } |
2371 | ||
2372 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2373 | { | |
2374 | struct switch_log_entry *p; | |
2375 | ||
2376 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2377 | ||
cef37ac1 AB |
2378 | return snprintf(tbuf, n, "%llu.%09u %d %u %u %llu\n", |
2379 | (unsigned long long) p->tstamp.tv_sec, | |
5158e9b5 CH |
2380 | (unsigned int) p->tstamp.tv_nsec, |
2381 | p->spu_id, | |
2382 | (unsigned int) p->type, | |
2383 | (unsigned int) p->val, | |
2384 | (unsigned long long) p->timebase); | |
2385 | } | |
2386 | ||
2387 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2388 | size_t len, loff_t *ppos) | |
2389 | { | |
496ad9aa | 2390 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2391 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2392 | int error = 0, cnt = 0; | |
2393 | ||
17e37675 | 2394 | if (!buf) |
5158e9b5 CH |
2395 | return -EINVAL; |
2396 | ||
f5ed0eb6 JK |
2397 | error = spu_acquire(ctx); |
2398 | if (error) | |
2399 | return error; | |
2400 | ||
5158e9b5 CH |
2401 | while (cnt < len) { |
2402 | char tbuf[128]; | |
2403 | int width; | |
2404 | ||
14f693ee JK |
2405 | if (spufs_switch_log_used(ctx) == 0) { |
2406 | if (cnt > 0) { | |
2407 | /* If there's data ready to go, we can | |
2408 | * just return straight away */ | |
2409 | break; | |
2410 | ||
2411 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2412 | error = -EAGAIN; |
2413 | break; | |
14f693ee JK |
2414 | |
2415 | } else { | |
2416 | /* spufs_wait will drop the mutex and | |
2417 | * re-acquire, but since we're in read(), the | |
2418 | * file cannot be _released (and so | |
2419 | * ctx->switch_log is stable). | |
2420 | */ | |
2421 | error = spufs_wait(ctx->switch_log->wait, | |
2422 | spufs_switch_log_used(ctx) > 0); | |
2423 | ||
2424 | /* On error, spufs_wait returns without the | |
2425 | * state mutex held */ | |
2426 | if (error) | |
2427 | return error; | |
2428 | ||
2429 | /* We may have had entries read from underneath | |
2430 | * us while we dropped the mutex in spufs_wait, | |
2431 | * so re-check */ | |
2432 | if (spufs_switch_log_used(ctx) == 0) | |
2433 | continue; | |
f5ed0eb6 | 2434 | } |
5158e9b5 CH |
2435 | } |
2436 | ||
5158e9b5 | 2437 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2438 | if (width < len) |
5158e9b5 CH |
2439 | ctx->switch_log->tail = |
2440 | (ctx->switch_log->tail + 1) % | |
2441 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2442 | else |
2443 | /* If the record is greater than space available return | |
2444 | * partial buffer (so far) */ | |
5158e9b5 CH |
2445 | break; |
2446 | ||
2447 | error = copy_to_user(buf + cnt, tbuf, width); | |
2448 | if (error) | |
2449 | break; | |
2450 | cnt += width; | |
2451 | } | |
2452 | ||
f5ed0eb6 JK |
2453 | spu_release(ctx); |
2454 | ||
5158e9b5 CH |
2455 | return cnt == 0 ? error : cnt; |
2456 | } | |
2457 | ||
8153a5ea | 2458 | static __poll_t spufs_switch_log_poll(struct file *file, poll_table *wait) |
5158e9b5 | 2459 | { |
496ad9aa | 2460 | struct inode *inode = file_inode(file); |
5158e9b5 | 2461 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
8153a5ea | 2462 | __poll_t mask = 0; |
f5ed0eb6 | 2463 | int rc; |
5158e9b5 CH |
2464 | |
2465 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2466 | ||
f5ed0eb6 JK |
2467 | rc = spu_acquire(ctx); |
2468 | if (rc) | |
2469 | return rc; | |
2470 | ||
5158e9b5 | 2471 | if (spufs_switch_log_used(ctx) > 0) |
a9a08845 | 2472 | mask |= EPOLLIN; |
5158e9b5 | 2473 | |
f5ed0eb6 JK |
2474 | spu_release(ctx); |
2475 | ||
5158e9b5 CH |
2476 | return mask; |
2477 | } | |
2478 | ||
2479 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2480 | .open = spufs_switch_log_open, |
2481 | .read = spufs_switch_log_read, | |
2482 | .poll = spufs_switch_log_poll, | |
2483 | .release = spufs_switch_log_release, | |
fc15351d | 2484 | .llseek = no_llseek, |
5158e9b5 CH |
2485 | }; |
2486 | ||
f5ed0eb6 JK |
2487 | /** |
2488 | * Log a context switch event to a switch log reader. | |
2489 | * | |
2490 | * Must be called with ctx->state_mutex held. | |
2491 | */ | |
5158e9b5 CH |
2492 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2493 | u32 type, u32 val) | |
2494 | { | |
2495 | if (!ctx->switch_log) | |
2496 | return; | |
2497 | ||
5158e9b5 CH |
2498 | if (spufs_switch_log_avail(ctx) > 1) { |
2499 | struct switch_log_entry *p; | |
2500 | ||
2501 | p = ctx->switch_log->log + ctx->switch_log->head; | |
cef37ac1 | 2502 | ktime_get_ts64(&p->tstamp); |
5158e9b5 CH |
2503 | p->timebase = get_tb(); |
2504 | p->spu_id = spu ? spu->number : -1; | |
2505 | p->type = type; | |
2506 | p->val = val; | |
2507 | ||
2508 | ctx->switch_log->head = | |
2509 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2510 | } | |
5158e9b5 CH |
2511 | |
2512 | wake_up(&ctx->switch_log->wait); | |
2513 | } | |
e9f8a0b6 | 2514 | |
46deed69 LB |
2515 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2516 | { | |
2517 | struct spu_context *ctx = s->private; | |
2518 | u64 mfc_control_RW; | |
2519 | ||
2520 | mutex_lock(&ctx->state_mutex); | |
2521 | if (ctx->spu) { | |
2522 | struct spu *spu = ctx->spu; | |
2523 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2524 | ||
2525 | spin_lock_irq(&spu->register_lock); | |
2526 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2527 | spin_unlock_irq(&spu->register_lock); | |
2528 | } else { | |
2529 | struct spu_state *csa = &ctx->csa; | |
2530 | ||
2531 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2532 | } | |
2533 | ||
2534 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2535 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2536 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2537 | ctx->flags, | |
2538 | ctx->sched_flags, | |
2539 | ctx->prio, | |
2540 | ctx->time_slice, | |
2541 | ctx->spu ? ctx->spu->number : -1, | |
2542 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2543 | ctx->csa.class_0_pending, | |
2544 | ctx->csa.class_0_dar, | |
2545 | ctx->csa.class_1_dsisr, | |
2546 | mfc_control_RW, | |
2547 | ctx->ops->runcntl_read(ctx), | |
2548 | ctx->ops->status_read(ctx)); | |
2549 | ||
2550 | mutex_unlock(&ctx->state_mutex); | |
2551 | ||
2552 | return 0; | |
2553 | } | |
2554 | ||
2555 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2556 | { | |
2557 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2558 | } | |
2559 | ||
2560 | static const struct file_operations spufs_ctx_fops = { | |
2561 | .open = spufs_ctx_open, | |
2562 | .read = seq_read, | |
2563 | .llseek = seq_lseek, | |
2564 | .release = single_release, | |
2565 | }; | |
2566 | ||
74254647 | 2567 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2568 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2569 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2570 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2571 | { "mbox", &spufs_mbox_fops, 0444, }, |
2572 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2573 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2574 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2575 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2576 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2577 | { "signal1", &spufs_signal1_fops, 0666, }, |
2578 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2579 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2580 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2581 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2582 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2583 | { "lslr", &spufs_lslr_ops, 0444, }, |
2584 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2585 | { "mss", &spufs_mss_fops, 0666, }, | |
2586 | { "npc", &spufs_npc_ops, 0666, }, | |
2587 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2588 | { "decr", &spufs_decr_ops, 0666, }, |
2589 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2590 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2591 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2592 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2593 | { "phys-id", &spufs_id_ops, 0666, }, |
2594 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2595 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2596 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2597 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2598 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2599 | sizeof(struct spu_dma_info), }, | |
2600 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2601 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2602 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2603 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2604 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2605 | {}, |
2606 | }; | |
5737edd1 | 2607 | |
74254647 | 2608 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2609 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2610 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2611 | { "mbox", &spufs_mbox_fops, 0444, }, |
2612 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2613 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2614 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2615 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2616 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2617 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2618 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2619 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2620 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2621 | { "mss", &spufs_mss_fops, 0666, }, | |
2622 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2623 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2624 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2625 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2626 | { "phys-id", &spufs_id_ops, 0666, }, |
2627 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2628 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2629 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2630 | {}, |
2631 | }; | |
2632 | ||
74254647 | 2633 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2634 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2635 | {}, |
2636 | }; | |
bf1ab978 | 2637 | |
74254647 | 2638 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2639 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2640 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2641 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2642 | { "decr", NULL, spufs_decr_get, 19 }, | |
2643 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2644 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2645 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2646 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2647 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2648 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2649 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2650 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2651 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2652 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2653 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2654 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2655 | { "proxydma_info", __spufs_proxydma_info_read, | |
2656 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2657 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2658 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2659 | { NULL }, |
bf1ab978 | 2660 | }; |