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67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
4b16f8e2 | 27 | #include <linux/export.h> |
d88cfffa | 28 | #include <linux/pagemap.h> |
67207b96 | 29 | #include <linux/poll.h> |
5110459f | 30 | #include <linux/ptrace.h> |
cbe709c1 | 31 | #include <linux/seq_file.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
67207b96 AB |
33 | |
34 | #include <asm/io.h> | |
dfe1e09f | 35 | #include <asm/time.h> |
67207b96 | 36 | #include <asm/spu.h> |
b9e3bd77 | 37 | #include <asm/spu_info.h> |
67207b96 AB |
38 | #include <asm/uaccess.h> |
39 | ||
40 | #include "spufs.h" | |
ae142e0c | 41 | #include "sputrace.h" |
67207b96 | 42 | |
27d5bf2a BH |
43 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
44 | ||
197b1a82 CH |
45 | /* Simple attribute files */ |
46 | struct spufs_attr { | |
47 | int (*get)(void *, u64 *); | |
48 | int (*set)(void *, u64); | |
49 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
50 | char set_buf[24]; | |
51 | void *data; | |
52 | const char *fmt; /* format for read operation */ | |
53 | struct mutex mutex; /* protects access to these buffers */ | |
54 | }; | |
55 | ||
56 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
57 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
58 | const char *fmt) | |
59 | { | |
60 | struct spufs_attr *attr; | |
61 | ||
62 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
63 | if (!attr) | |
64 | return -ENOMEM; | |
65 | ||
66 | attr->get = get; | |
67 | attr->set = set; | |
68 | attr->data = inode->i_private; | |
69 | attr->fmt = fmt; | |
70 | mutex_init(&attr->mutex); | |
71 | file->private_data = attr; | |
72 | ||
73 | return nonseekable_open(inode, file); | |
74 | } | |
75 | ||
76 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
77 | { | |
78 | kfree(file->private_data); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
83 | size_t len, loff_t *ppos) | |
84 | { | |
85 | struct spufs_attr *attr; | |
86 | size_t size; | |
87 | ssize_t ret; | |
88 | ||
89 | attr = file->private_data; | |
90 | if (!attr->get) | |
91 | return -EACCES; | |
92 | ||
93 | ret = mutex_lock_interruptible(&attr->mutex); | |
94 | if (ret) | |
95 | return ret; | |
96 | ||
97 | if (*ppos) { /* continued read */ | |
98 | size = strlen(attr->get_buf); | |
99 | } else { /* first read */ | |
100 | u64 val; | |
101 | ret = attr->get(attr->data, &val); | |
102 | if (ret) | |
103 | goto out; | |
104 | ||
105 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
106 | attr->fmt, (unsigned long long)val); | |
107 | } | |
108 | ||
109 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
110 | out: | |
111 | mutex_unlock(&attr->mutex); | |
112 | return ret; | |
113 | } | |
114 | ||
115 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
116 | size_t len, loff_t *ppos) | |
117 | { | |
118 | struct spufs_attr *attr; | |
119 | u64 val; | |
120 | size_t size; | |
121 | ssize_t ret; | |
122 | ||
123 | attr = file->private_data; | |
124 | if (!attr->set) | |
125 | return -EACCES; | |
126 | ||
127 | ret = mutex_lock_interruptible(&attr->mutex); | |
128 | if (ret) | |
129 | return ret; | |
130 | ||
131 | ret = -EFAULT; | |
132 | size = min(sizeof(attr->set_buf) - 1, len); | |
133 | if (copy_from_user(attr->set_buf, buf, size)) | |
134 | goto out; | |
135 | ||
136 | ret = len; /* claim we got the whole input */ | |
137 | attr->set_buf[size] = '\0'; | |
138 | val = simple_strtol(attr->set_buf, NULL, 0); | |
139 | attr->set(attr->data, val); | |
140 | out: | |
141 | mutex_unlock(&attr->mutex); | |
142 | return ret; | |
143 | } | |
144 | ||
145 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
146 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
147 | { \ | |
148 | __simple_attr_check_format(__fmt, 0ull); \ | |
149 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
150 | } \ | |
828c0950 | 151 | static const struct file_operations __fops = { \ |
197b1a82 CH |
152 | .open = __fops ## _open, \ |
153 | .release = spufs_attr_release, \ | |
154 | .read = spufs_attr_read, \ | |
155 | .write = spufs_attr_write, \ | |
fc15351d | 156 | .llseek = generic_file_llseek, \ |
197b1a82 CH |
157 | }; |
158 | ||
cbe709c1 | 159 | |
67207b96 AB |
160 | static int |
161 | spufs_mem_open(struct inode *inode, struct file *file) | |
162 | { | |
163 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 164 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 165 | |
47d3a5fa | 166 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 167 | file->private_data = ctx; |
43c2bbd9 CH |
168 | if (!i->i_openers++) |
169 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 170 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
171 | return 0; |
172 | } | |
173 | ||
174 | static int | |
175 | spufs_mem_release(struct inode *inode, struct file *file) | |
176 | { | |
177 | struct spufs_inode_info *i = SPUFS_I(inode); | |
178 | struct spu_context *ctx = i->i_ctx; | |
179 | ||
47d3a5fa | 180 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
181 | if (!--i->i_openers) |
182 | ctx->local_store = NULL; | |
47d3a5fa | 183 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
184 | return 0; |
185 | } | |
186 | ||
bf1ab978 DGM |
187 | static ssize_t |
188 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
189 | size_t size, loff_t *pos) | |
190 | { | |
191 | char *local_store = ctx->ops->get_ls(ctx); | |
192 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
193 | LS_SIZE); | |
194 | } | |
195 | ||
67207b96 AB |
196 | static ssize_t |
197 | spufs_mem_read(struct file *file, char __user *buffer, | |
198 | size_t size, loff_t *pos) | |
199 | { | |
bf1ab978 | 200 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 201 | ssize_t ret; |
67207b96 | 202 | |
c9101bdb CH |
203 | ret = spu_acquire(ctx); |
204 | if (ret) | |
205 | return ret; | |
bf1ab978 | 206 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 207 | spu_release(ctx); |
c9101bdb | 208 | |
67207b96 AB |
209 | return ret; |
210 | } | |
211 | ||
212 | static ssize_t | |
213 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 214 | size_t size, loff_t *ppos) |
67207b96 AB |
215 | { |
216 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 217 | char *local_store; |
aa0ed2bd | 218 | loff_t pos = *ppos; |
8b3d6663 | 219 | int ret; |
67207b96 | 220 | |
aa0ed2bd | 221 | if (pos > LS_SIZE) |
67207b96 | 222 | return -EFBIG; |
8b3d6663 | 223 | |
c9101bdb CH |
224 | ret = spu_acquire(ctx); |
225 | if (ret) | |
226 | return ret; | |
227 | ||
8b3d6663 | 228 | local_store = ctx->ops->get_ls(ctx); |
63c3b9d7 | 229 | size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); |
8b3d6663 | 230 | spu_release(ctx); |
aa0ed2bd | 231 | |
aa0ed2bd | 232 | return size; |
67207b96 AB |
233 | } |
234 | ||
b1e2270f NP |
235 | static int |
236 | spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
8b3d6663 | 237 | { |
f1fa74f4 | 238 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
239 | unsigned long address = (unsigned long)vmf->virtual_address; |
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 NP |
246 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
247 | 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 | } |
78bde53e | 259 | vm_insert_pfn(vma, 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 | ||
b1e2270f NP |
315 | static int spufs_ps_fault(struct vm_area_struct *vma, |
316 | struct vm_fault *vmf, | |
78bde53e | 317 | unsigned long ps_offs, |
27d5bf2a | 318 | unsigned long ps_size) |
6df10a82 | 319 | { |
6df10a82 | 320 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 321 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
eebead5b | 322 | int ret = 0; |
6df10a82 | 323 | |
b1e2270f | 324 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 325 | |
27d5bf2a | 326 | if (offset >= ps_size) |
b1e2270f | 327 | return VM_FAULT_SIGBUS; |
6df10a82 | 328 | |
60657263 JK |
329 | if (fatal_signal_pending(current)) |
330 | return VM_FAULT_SIGBUS; | |
331 | ||
d5883137 JK |
332 | /* |
333 | * Because we release the mmap_sem, the context may be destroyed while | |
334 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
335 | * in the meantime. | |
336 | */ | |
337 | get_spu_context(ctx); | |
338 | ||
33bfd7a7 AB |
339 | /* |
340 | * We have to wait for context to be loaded before we have | |
341 | * pages to hand out to the user, but we don't want to wait | |
342 | * with the mmap_sem held. | |
343 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 344 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 345 | * hanged. |
78bde53e | 346 | */ |
c9101bdb | 347 | if (spu_acquire(ctx)) |
d5883137 | 348 | goto refault; |
c9101bdb | 349 | |
33bfd7a7 AB |
350 | if (ctx->state == SPU_STATE_SAVED) { |
351 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 352 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
eebead5b | 353 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 354 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 355 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
356 | } else { |
357 | area = ctx->spu->problem_phys + ps_offs; | |
b1e2270f NP |
358 | vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, |
359 | (area + offset) >> PAGE_SHIFT); | |
360 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); | |
33bfd7a7 | 361 | } |
6df10a82 | 362 | |
eebead5b CH |
363 | if (!ret) |
364 | spu_release(ctx); | |
d5883137 JK |
365 | |
366 | refault: | |
367 | put_spu_context(ctx); | |
b1e2270f | 368 | return VM_FAULT_NOPAGE; |
6df10a82 MN |
369 | } |
370 | ||
27d5bf2a | 371 | #if SPUFS_MMAP_4K |
b1e2270f NP |
372 | static int spufs_cntl_mmap_fault(struct vm_area_struct *vma, |
373 | struct vm_fault *vmf) | |
6df10a82 | 374 | { |
87ff6090 | 375 | return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
376 | } |
377 | ||
f0f37e2f | 378 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 379 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
380 | }; |
381 | ||
382 | /* | |
383 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
384 | */ |
385 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
386 | { | |
387 | if (!(vma->vm_flags & VM_SHARED)) | |
388 | return -EINVAL; | |
389 | ||
78bde53e | 390 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 391 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
392 | |
393 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
394 | return 0; | |
395 | } | |
27d5bf2a BH |
396 | #else /* SPUFS_MMAP_4K */ |
397 | #define spufs_cntl_mmap NULL | |
398 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 399 | |
197b1a82 | 400 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 401 | { |
e1dbff2b | 402 | struct spu_context *ctx = data; |
c9101bdb | 403 | int ret; |
6df10a82 | 404 | |
c9101bdb CH |
405 | ret = spu_acquire(ctx); |
406 | if (ret) | |
407 | return ret; | |
197b1a82 | 408 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
409 | spu_release(ctx); |
410 | ||
197b1a82 | 411 | return 0; |
6df10a82 MN |
412 | } |
413 | ||
197b1a82 | 414 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 415 | { |
e1dbff2b | 416 | struct spu_context *ctx = data; |
c9101bdb | 417 | int ret; |
e1dbff2b | 418 | |
c9101bdb CH |
419 | ret = spu_acquire(ctx); |
420 | if (ret) | |
421 | return ret; | |
e1dbff2b AB |
422 | ctx->ops->runcntl_write(ctx, val); |
423 | spu_release(ctx); | |
197b1a82 CH |
424 | |
425 | return 0; | |
6df10a82 MN |
426 | } |
427 | ||
e1dbff2b | 428 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 429 | { |
e1dbff2b AB |
430 | struct spufs_inode_info *i = SPUFS_I(inode); |
431 | struct spu_context *ctx = i->i_ctx; | |
432 | ||
47d3a5fa | 433 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 434 | file->private_data = ctx; |
43c2bbd9 CH |
435 | if (!i->i_openers++) |
436 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 437 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 438 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 439 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
440 | } |
441 | ||
43c2bbd9 CH |
442 | static int |
443 | spufs_cntl_release(struct inode *inode, struct file *file) | |
444 | { | |
445 | struct spufs_inode_info *i = SPUFS_I(inode); | |
446 | struct spu_context *ctx = i->i_ctx; | |
447 | ||
74bedc4d | 448 | simple_attr_release(inode, file); |
43c2bbd9 | 449 | |
47d3a5fa | 450 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
451 | if (!--i->i_openers) |
452 | ctx->cntl = NULL; | |
47d3a5fa | 453 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
454 | return 0; |
455 | } | |
456 | ||
5dfe4c96 | 457 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 458 | .open = spufs_cntl_open, |
43c2bbd9 | 459 | .release = spufs_cntl_release, |
8b88b099 CH |
460 | .read = simple_attr_read, |
461 | .write = simple_attr_write, | |
fc15351d | 462 | .llseek = generic_file_llseek, |
6df10a82 | 463 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
464 | }; |
465 | ||
8b3d6663 AB |
466 | static int |
467 | spufs_regs_open(struct inode *inode, struct file *file) | |
468 | { | |
469 | struct spufs_inode_info *i = SPUFS_I(inode); | |
470 | file->private_data = i->i_ctx; | |
471 | return 0; | |
472 | } | |
473 | ||
bf1ab978 DGM |
474 | static ssize_t |
475 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
476 | size_t size, loff_t *pos) | |
477 | { | |
478 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
479 | return simple_read_from_buffer(buffer, size, pos, | |
480 | lscsa->gprs, sizeof lscsa->gprs); | |
481 | } | |
482 | ||
8b3d6663 AB |
483 | static ssize_t |
484 | spufs_regs_read(struct file *file, char __user *buffer, | |
485 | size_t size, loff_t *pos) | |
486 | { | |
8b3d6663 | 487 | int ret; |
bf1ab978 | 488 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 489 | |
f027faa2 JK |
490 | /* pre-check for file position: if we'd return EOF, there's no point |
491 | * causing a deschedule */ | |
492 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
493 | return 0; | |
494 | ||
c9101bdb CH |
495 | ret = spu_acquire_saved(ctx); |
496 | if (ret) | |
497 | return ret; | |
bf1ab978 | 498 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 499 | spu_release_saved(ctx); |
8b3d6663 AB |
500 | return ret; |
501 | } | |
502 | ||
503 | static ssize_t | |
504 | spufs_regs_write(struct file *file, const char __user *buffer, | |
505 | size_t size, loff_t *pos) | |
506 | { | |
507 | struct spu_context *ctx = file->private_data; | |
508 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
509 | int ret; | |
510 | ||
d219889b | 511 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 512 | return -EFBIG; |
d219889b | 513 | |
c9101bdb CH |
514 | ret = spu_acquire_saved(ctx); |
515 | if (ret) | |
516 | return ret; | |
8b3d6663 | 517 | |
63c3b9d7 AM |
518 | size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, |
519 | buffer, size); | |
8b3d6663 | 520 | |
27b1ea09 | 521 | spu_release_saved(ctx); |
63c3b9d7 | 522 | return size; |
8b3d6663 AB |
523 | } |
524 | ||
5dfe4c96 | 525 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
526 | .open = spufs_regs_open, |
527 | .read = spufs_regs_read, | |
528 | .write = spufs_regs_write, | |
67207b96 AB |
529 | .llseek = generic_file_llseek, |
530 | }; | |
531 | ||
bf1ab978 DGM |
532 | static ssize_t |
533 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
534 | size_t size, loff_t * pos) | |
535 | { | |
536 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
537 | return simple_read_from_buffer(buffer, size, pos, | |
538 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
539 | } | |
540 | ||
8b3d6663 AB |
541 | static ssize_t |
542 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
543 | size_t size, loff_t * pos) | |
544 | { | |
8b3d6663 | 545 | int ret; |
bf1ab978 | 546 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 547 | |
c9101bdb CH |
548 | ret = spu_acquire_saved(ctx); |
549 | if (ret) | |
550 | return ret; | |
bf1ab978 | 551 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 552 | spu_release_saved(ctx); |
8b3d6663 AB |
553 | return ret; |
554 | } | |
555 | ||
556 | static ssize_t | |
557 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
558 | size_t size, loff_t * pos) | |
559 | { | |
560 | struct spu_context *ctx = file->private_data; | |
561 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
562 | int ret; | |
563 | ||
d219889b | 564 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 565 | return -EFBIG; |
8b3d6663 | 566 | |
c9101bdb CH |
567 | ret = spu_acquire_saved(ctx); |
568 | if (ret) | |
569 | return ret; | |
8b3d6663 | 570 | |
63c3b9d7 AM |
571 | size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, |
572 | buffer, size); | |
8b3d6663 | 573 | |
27b1ea09 | 574 | spu_release_saved(ctx); |
63c3b9d7 | 575 | return size; |
8b3d6663 AB |
576 | } |
577 | ||
5dfe4c96 | 578 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
579 | .open = spufs_regs_open, |
580 | .read = spufs_fpcr_read, | |
581 | .write = spufs_fpcr_write, | |
582 | .llseek = generic_file_llseek, | |
583 | }; | |
584 | ||
67207b96 AB |
585 | /* generic open function for all pipe-like files */ |
586 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
587 | { | |
588 | struct spufs_inode_info *i = SPUFS_I(inode); | |
589 | file->private_data = i->i_ctx; | |
590 | ||
591 | return nonseekable_open(inode, file); | |
592 | } | |
593 | ||
cdcc89bb AB |
594 | /* |
595 | * Read as many bytes from the mailbox as possible, until | |
596 | * one of the conditions becomes true: | |
597 | * | |
598 | * - no more data available in the mailbox | |
599 | * - end of the user provided buffer | |
600 | * - end of the mapped area | |
601 | */ | |
67207b96 AB |
602 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
603 | size_t len, loff_t *pos) | |
604 | { | |
8b3d6663 | 605 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
606 | u32 mbox_data, __user *udata; |
607 | ssize_t count; | |
67207b96 AB |
608 | |
609 | if (len < 4) | |
610 | return -EINVAL; | |
611 | ||
cdcc89bb AB |
612 | if (!access_ok(VERIFY_WRITE, buf, len)) |
613 | return -EFAULT; | |
614 | ||
615 | udata = (void __user *)buf; | |
616 | ||
c9101bdb CH |
617 | count = spu_acquire(ctx); |
618 | if (count) | |
619 | return count; | |
620 | ||
274cef5e | 621 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
622 | int ret; |
623 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
624 | if (ret == 0) | |
625 | break; | |
626 | ||
627 | /* | |
628 | * at the end of the mapped area, we can fault | |
629 | * but still need to return the data we have | |
630 | * read successfully so far. | |
631 | */ | |
632 | ret = __put_user(mbox_data, udata); | |
633 | if (ret) { | |
634 | if (!count) | |
635 | count = -EFAULT; | |
636 | break; | |
637 | } | |
638 | } | |
8b3d6663 | 639 | spu_release(ctx); |
67207b96 | 640 | |
cdcc89bb AB |
641 | if (!count) |
642 | count = -EAGAIN; | |
67207b96 | 643 | |
cdcc89bb | 644 | return count; |
67207b96 AB |
645 | } |
646 | ||
5dfe4c96 | 647 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
648 | .open = spufs_pipe_open, |
649 | .read = spufs_mbox_read, | |
fc15351d | 650 | .llseek = no_llseek, |
67207b96 AB |
651 | }; |
652 | ||
653 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
654 | size_t len, loff_t *pos) | |
655 | { | |
8b3d6663 | 656 | struct spu_context *ctx = file->private_data; |
c9101bdb | 657 | ssize_t ret; |
67207b96 AB |
658 | u32 mbox_stat; |
659 | ||
660 | if (len < 4) | |
661 | return -EINVAL; | |
662 | ||
c9101bdb CH |
663 | ret = spu_acquire(ctx); |
664 | if (ret) | |
665 | return ret; | |
8b3d6663 AB |
666 | |
667 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
668 | ||
669 | spu_release(ctx); | |
67207b96 AB |
670 | |
671 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
672 | return -EFAULT; | |
673 | ||
674 | return 4; | |
675 | } | |
676 | ||
5dfe4c96 | 677 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
678 | .open = spufs_pipe_open, |
679 | .read = spufs_mbox_stat_read, | |
fc15351d | 680 | .llseek = no_llseek, |
67207b96 AB |
681 | }; |
682 | ||
683 | /* low-level ibox access function */ | |
8b3d6663 | 684 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 685 | { |
8b3d6663 AB |
686 | return ctx->ops->ibox_read(ctx, data); |
687 | } | |
67207b96 | 688 | |
8b3d6663 AB |
689 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
690 | { | |
691 | struct spu_context *ctx = file->private_data; | |
67207b96 | 692 | |
8b3d6663 | 693 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 694 | } |
67207b96 | 695 | |
8b3d6663 AB |
696 | /* interrupt-level ibox callback function. */ |
697 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 698 | { |
8b3d6663 AB |
699 | struct spu_context *ctx = spu->ctx; |
700 | ||
e65c2f6f LB |
701 | if (!ctx) |
702 | return; | |
703 | ||
8b3d6663 AB |
704 | wake_up_all(&ctx->ibox_wq); |
705 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
706 | } |
707 | ||
cdcc89bb AB |
708 | /* |
709 | * Read as many bytes from the interrupt mailbox as possible, until | |
710 | * one of the conditions becomes true: | |
711 | * | |
712 | * - no more data available in the mailbox | |
713 | * - end of the user provided buffer | |
714 | * - end of the mapped area | |
715 | * | |
716 | * If the file is opened without O_NONBLOCK, we wait here until | |
717 | * any data is available, but return when we have been able to | |
718 | * read something. | |
719 | */ | |
67207b96 AB |
720 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
721 | size_t len, loff_t *pos) | |
722 | { | |
8b3d6663 | 723 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
724 | u32 ibox_data, __user *udata; |
725 | ssize_t count; | |
67207b96 AB |
726 | |
727 | if (len < 4) | |
728 | return -EINVAL; | |
729 | ||
cdcc89bb AB |
730 | if (!access_ok(VERIFY_WRITE, buf, len)) |
731 | return -EFAULT; | |
732 | ||
733 | udata = (void __user *)buf; | |
734 | ||
c9101bdb CH |
735 | count = spu_acquire(ctx); |
736 | if (count) | |
eebead5b | 737 | goto out; |
67207b96 | 738 | |
cdcc89bb AB |
739 | /* wait only for the first element */ |
740 | count = 0; | |
67207b96 | 741 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 742 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 743 | count = -EAGAIN; |
eebead5b CH |
744 | goto out_unlock; |
745 | } | |
67207b96 | 746 | } else { |
cdcc89bb | 747 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
748 | if (count) |
749 | goto out; | |
67207b96 AB |
750 | } |
751 | ||
cdcc89bb AB |
752 | /* if we can't write at all, return -EFAULT */ |
753 | count = __put_user(ibox_data, udata); | |
754 | if (count) | |
eebead5b | 755 | goto out_unlock; |
8b3d6663 | 756 | |
cdcc89bb AB |
757 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
758 | int ret; | |
759 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
760 | if (ret == 0) | |
761 | break; | |
762 | /* | |
763 | * at the end of the mapped area, we can fault | |
764 | * but still need to return the data we have | |
765 | * read successfully so far. | |
766 | */ | |
767 | ret = __put_user(ibox_data, udata); | |
768 | if (ret) | |
769 | break; | |
770 | } | |
67207b96 | 771 | |
eebead5b | 772 | out_unlock: |
cdcc89bb | 773 | spu_release(ctx); |
eebead5b | 774 | out: |
cdcc89bb | 775 | return count; |
67207b96 AB |
776 | } |
777 | ||
778 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
779 | { | |
8b3d6663 | 780 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
781 | unsigned int mask; |
782 | ||
8b3d6663 | 783 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 784 | |
c9101bdb CH |
785 | /* |
786 | * For now keep this uninterruptible and also ignore the rule | |
787 | * that poll should not sleep. Will be fixed later. | |
788 | */ | |
789 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
790 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
791 | spu_release(ctx); | |
67207b96 AB |
792 | |
793 | return mask; | |
794 | } | |
795 | ||
5dfe4c96 | 796 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
797 | .open = spufs_pipe_open, |
798 | .read = spufs_ibox_read, | |
799 | .poll = spufs_ibox_poll, | |
800 | .fasync = spufs_ibox_fasync, | |
fc15351d | 801 | .llseek = no_llseek, |
67207b96 AB |
802 | }; |
803 | ||
804 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
805 | size_t len, loff_t *pos) | |
806 | { | |
8b3d6663 | 807 | struct spu_context *ctx = file->private_data; |
c9101bdb | 808 | ssize_t ret; |
67207b96 AB |
809 | u32 ibox_stat; |
810 | ||
811 | if (len < 4) | |
812 | return -EINVAL; | |
813 | ||
c9101bdb CH |
814 | ret = spu_acquire(ctx); |
815 | if (ret) | |
816 | return ret; | |
8b3d6663 AB |
817 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
818 | spu_release(ctx); | |
67207b96 AB |
819 | |
820 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
821 | return -EFAULT; | |
822 | ||
823 | return 4; | |
824 | } | |
825 | ||
5dfe4c96 | 826 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
827 | .open = spufs_pipe_open, |
828 | .read = spufs_ibox_stat_read, | |
fc15351d | 829 | .llseek = no_llseek, |
67207b96 AB |
830 | }; |
831 | ||
832 | /* low-level mailbox write */ | |
8b3d6663 | 833 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 834 | { |
8b3d6663 AB |
835 | return ctx->ops->wbox_write(ctx, data); |
836 | } | |
67207b96 | 837 | |
8b3d6663 AB |
838 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
839 | { | |
840 | struct spu_context *ctx = file->private_data; | |
841 | int ret; | |
67207b96 | 842 | |
8b3d6663 | 843 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 844 | |
67207b96 AB |
845 | return ret; |
846 | } | |
67207b96 | 847 | |
8b3d6663 AB |
848 | /* interrupt-level wbox callback function. */ |
849 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 850 | { |
8b3d6663 AB |
851 | struct spu_context *ctx = spu->ctx; |
852 | ||
e65c2f6f LB |
853 | if (!ctx) |
854 | return; | |
855 | ||
8b3d6663 AB |
856 | wake_up_all(&ctx->wbox_wq); |
857 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
858 | } |
859 | ||
cdcc89bb AB |
860 | /* |
861 | * Write as many bytes to the interrupt mailbox as possible, until | |
862 | * one of the conditions becomes true: | |
863 | * | |
864 | * - the mailbox is full | |
865 | * - end of the user provided buffer | |
866 | * - end of the mapped area | |
867 | * | |
868 | * If the file is opened without O_NONBLOCK, we wait here until | |
869 | * space is availabyl, but return when we have been able to | |
870 | * write something. | |
871 | */ | |
67207b96 AB |
872 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
873 | size_t len, loff_t *pos) | |
874 | { | |
8b3d6663 | 875 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
876 | u32 wbox_data, __user *udata; |
877 | ssize_t count; | |
67207b96 AB |
878 | |
879 | if (len < 4) | |
880 | return -EINVAL; | |
881 | ||
cdcc89bb AB |
882 | udata = (void __user *)buf; |
883 | if (!access_ok(VERIFY_READ, buf, len)) | |
884 | return -EFAULT; | |
885 | ||
886 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
887 | return -EFAULT; |
888 | ||
c9101bdb CH |
889 | count = spu_acquire(ctx); |
890 | if (count) | |
eebead5b | 891 | goto out; |
8b3d6663 | 892 | |
cdcc89bb AB |
893 | /* |
894 | * make sure we can at least write one element, by waiting | |
895 | * in case of !O_NONBLOCK | |
896 | */ | |
897 | count = 0; | |
67207b96 | 898 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 899 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 900 | count = -EAGAIN; |
eebead5b CH |
901 | goto out_unlock; |
902 | } | |
67207b96 | 903 | } else { |
cdcc89bb | 904 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
905 | if (count) |
906 | goto out; | |
67207b96 AB |
907 | } |
908 | ||
8b3d6663 | 909 | |
96de0e25 | 910 | /* write as much as possible */ |
cdcc89bb AB |
911 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
912 | int ret; | |
913 | ret = __get_user(wbox_data, udata); | |
914 | if (ret) | |
915 | break; | |
916 | ||
917 | ret = spu_wbox_write(ctx, wbox_data); | |
918 | if (ret == 0) | |
919 | break; | |
920 | } | |
921 | ||
eebead5b | 922 | out_unlock: |
cdcc89bb | 923 | spu_release(ctx); |
eebead5b | 924 | out: |
cdcc89bb | 925 | return count; |
67207b96 AB |
926 | } |
927 | ||
928 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
929 | { | |
8b3d6663 | 930 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
931 | unsigned int mask; |
932 | ||
8b3d6663 | 933 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 934 | |
c9101bdb CH |
935 | /* |
936 | * For now keep this uninterruptible and also ignore the rule | |
937 | * that poll should not sleep. Will be fixed later. | |
938 | */ | |
939 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
940 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
941 | spu_release(ctx); | |
67207b96 AB |
942 | |
943 | return mask; | |
944 | } | |
945 | ||
5dfe4c96 | 946 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
947 | .open = spufs_pipe_open, |
948 | .write = spufs_wbox_write, | |
949 | .poll = spufs_wbox_poll, | |
950 | .fasync = spufs_wbox_fasync, | |
fc15351d | 951 | .llseek = no_llseek, |
67207b96 AB |
952 | }; |
953 | ||
954 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
955 | size_t len, loff_t *pos) | |
956 | { | |
8b3d6663 | 957 | struct spu_context *ctx = file->private_data; |
c9101bdb | 958 | ssize_t ret; |
67207b96 AB |
959 | u32 wbox_stat; |
960 | ||
961 | if (len < 4) | |
962 | return -EINVAL; | |
963 | ||
c9101bdb CH |
964 | ret = spu_acquire(ctx); |
965 | if (ret) | |
966 | return ret; | |
8b3d6663 AB |
967 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
968 | spu_release(ctx); | |
67207b96 AB |
969 | |
970 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
971 | return -EFAULT; | |
972 | ||
973 | return 4; | |
974 | } | |
975 | ||
5dfe4c96 | 976 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
977 | .open = spufs_pipe_open, |
978 | .read = spufs_wbox_stat_read, | |
fc15351d | 979 | .llseek = no_llseek, |
67207b96 AB |
980 | }; |
981 | ||
6df10a82 MN |
982 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
983 | { | |
984 | struct spufs_inode_info *i = SPUFS_I(inode); | |
985 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 986 | |
47d3a5fa | 987 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 988 | file->private_data = ctx; |
43c2bbd9 CH |
989 | if (!i->i_openers++) |
990 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 991 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
992 | return nonseekable_open(inode, file); |
993 | } | |
994 | ||
43c2bbd9 CH |
995 | static int |
996 | spufs_signal1_release(struct inode *inode, struct file *file) | |
997 | { | |
998 | struct spufs_inode_info *i = SPUFS_I(inode); | |
999 | struct spu_context *ctx = i->i_ctx; | |
1000 | ||
47d3a5fa | 1001 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1002 | if (!--i->i_openers) |
1003 | ctx->signal1 = NULL; | |
47d3a5fa | 1004 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1005 | return 0; |
1006 | } | |
1007 | ||
bf1ab978 | 1008 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1009 | size_t len, loff_t *pos) |
1010 | { | |
17f88ceb | 1011 | int ret = 0; |
67207b96 AB |
1012 | u32 data; |
1013 | ||
67207b96 AB |
1014 | if (len < 4) |
1015 | return -EINVAL; | |
1016 | ||
17f88ceb DGM |
1017 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1018 | data = ctx->csa.spu_chnldata_RW[3]; | |
1019 | ret = 4; | |
1020 | } | |
8b3d6663 | 1021 | |
17f88ceb DGM |
1022 | if (!ret) |
1023 | goto out; | |
1024 | ||
67207b96 AB |
1025 | if (copy_to_user(buf, &data, 4)) |
1026 | return -EFAULT; | |
1027 | ||
17f88ceb DGM |
1028 | out: |
1029 | return ret; | |
67207b96 AB |
1030 | } |
1031 | ||
bf1ab978 DGM |
1032 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1033 | size_t len, loff_t *pos) | |
1034 | { | |
1035 | int ret; | |
1036 | struct spu_context *ctx = file->private_data; | |
1037 | ||
c9101bdb CH |
1038 | ret = spu_acquire_saved(ctx); |
1039 | if (ret) | |
1040 | return ret; | |
bf1ab978 | 1041 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1042 | spu_release_saved(ctx); |
bf1ab978 DGM |
1043 | |
1044 | return ret; | |
1045 | } | |
1046 | ||
67207b96 AB |
1047 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1048 | size_t len, loff_t *pos) | |
1049 | { | |
1050 | struct spu_context *ctx; | |
c9101bdb | 1051 | ssize_t ret; |
67207b96 AB |
1052 | u32 data; |
1053 | ||
1054 | ctx = file->private_data; | |
67207b96 AB |
1055 | |
1056 | if (len < 4) | |
1057 | return -EINVAL; | |
1058 | ||
1059 | if (copy_from_user(&data, buf, 4)) | |
1060 | return -EFAULT; | |
1061 | ||
c9101bdb CH |
1062 | ret = spu_acquire(ctx); |
1063 | if (ret) | |
1064 | return ret; | |
8b3d6663 AB |
1065 | ctx->ops->signal1_write(ctx, data); |
1066 | spu_release(ctx); | |
67207b96 AB |
1067 | |
1068 | return 4; | |
1069 | } | |
1070 | ||
b1e2270f NP |
1071 | static int |
1072 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1073 | { |
87ff6090 JK |
1074 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1075 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1076 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1077 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1078 | * signal 1 and 2 area | |
1079 | */ | |
87ff6090 | 1080 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1081 | #else |
1082 | #error unsupported page size | |
1083 | #endif | |
6df10a82 MN |
1084 | } |
1085 | ||
f0f37e2f | 1086 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1087 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1088 | }; |
1089 | ||
1090 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1091 | { | |
1092 | if (!(vma->vm_flags & VM_SHARED)) | |
1093 | return -EINVAL; | |
1094 | ||
78bde53e | 1095 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1096 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1097 | |
1098 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1099 | return 0; | |
1100 | } | |
6df10a82 | 1101 | |
5dfe4c96 | 1102 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1103 | .open = spufs_signal1_open, |
43c2bbd9 | 1104 | .release = spufs_signal1_release, |
67207b96 AB |
1105 | .read = spufs_signal1_read, |
1106 | .write = spufs_signal1_write, | |
6df10a82 | 1107 | .mmap = spufs_signal1_mmap, |
fc15351d | 1108 | .llseek = no_llseek, |
67207b96 AB |
1109 | }; |
1110 | ||
d054b36f JK |
1111 | static const struct file_operations spufs_signal1_nosched_fops = { |
1112 | .open = spufs_signal1_open, | |
1113 | .release = spufs_signal1_release, | |
1114 | .write = spufs_signal1_write, | |
1115 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1116 | .llseek = no_llseek, |
d054b36f JK |
1117 | }; |
1118 | ||
6df10a82 MN |
1119 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1120 | { | |
1121 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1122 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1123 | |
47d3a5fa | 1124 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1125 | file->private_data = ctx; |
43c2bbd9 CH |
1126 | if (!i->i_openers++) |
1127 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1128 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1129 | return nonseekable_open(inode, file); |
1130 | } | |
1131 | ||
43c2bbd9 CH |
1132 | static int |
1133 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1134 | { | |
1135 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1136 | struct spu_context *ctx = i->i_ctx; | |
1137 | ||
47d3a5fa | 1138 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1139 | if (!--i->i_openers) |
1140 | ctx->signal2 = NULL; | |
47d3a5fa | 1141 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1142 | return 0; |
1143 | } | |
1144 | ||
bf1ab978 | 1145 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1146 | size_t len, loff_t *pos) |
1147 | { | |
17f88ceb | 1148 | int ret = 0; |
67207b96 AB |
1149 | u32 data; |
1150 | ||
67207b96 AB |
1151 | if (len < 4) |
1152 | return -EINVAL; | |
1153 | ||
17f88ceb DGM |
1154 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1155 | data = ctx->csa.spu_chnldata_RW[4]; | |
1156 | ret = 4; | |
1157 | } | |
8b3d6663 | 1158 | |
17f88ceb DGM |
1159 | if (!ret) |
1160 | goto out; | |
1161 | ||
67207b96 AB |
1162 | if (copy_to_user(buf, &data, 4)) |
1163 | return -EFAULT; | |
1164 | ||
17f88ceb | 1165 | out: |
bf1ab978 DGM |
1166 | return ret; |
1167 | } | |
1168 | ||
1169 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1170 | size_t len, loff_t *pos) | |
1171 | { | |
1172 | struct spu_context *ctx = file->private_data; | |
1173 | int ret; | |
1174 | ||
c9101bdb CH |
1175 | ret = spu_acquire_saved(ctx); |
1176 | if (ret) | |
1177 | return ret; | |
bf1ab978 | 1178 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1179 | spu_release_saved(ctx); |
bf1ab978 DGM |
1180 | |
1181 | return ret; | |
67207b96 AB |
1182 | } |
1183 | ||
1184 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1185 | size_t len, loff_t *pos) | |
1186 | { | |
1187 | struct spu_context *ctx; | |
c9101bdb | 1188 | ssize_t ret; |
67207b96 AB |
1189 | u32 data; |
1190 | ||
1191 | ctx = file->private_data; | |
67207b96 AB |
1192 | |
1193 | if (len < 4) | |
1194 | return -EINVAL; | |
1195 | ||
1196 | if (copy_from_user(&data, buf, 4)) | |
1197 | return -EFAULT; | |
1198 | ||
c9101bdb CH |
1199 | ret = spu_acquire(ctx); |
1200 | if (ret) | |
1201 | return ret; | |
8b3d6663 AB |
1202 | ctx->ops->signal2_write(ctx, data); |
1203 | spu_release(ctx); | |
67207b96 AB |
1204 | |
1205 | return 4; | |
1206 | } | |
1207 | ||
27d5bf2a | 1208 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1209 | static int |
1210 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1211 | { |
87ff6090 JK |
1212 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1213 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1214 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1215 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1216 | * signal 1 and 2 area | |
1217 | */ | |
87ff6090 | 1218 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1219 | #else |
1220 | #error unsupported page size | |
1221 | #endif | |
6df10a82 MN |
1222 | } |
1223 | ||
f0f37e2f | 1224 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1225 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1226 | }; |
1227 | ||
1228 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1229 | { | |
1230 | if (!(vma->vm_flags & VM_SHARED)) | |
1231 | return -EINVAL; | |
1232 | ||
78bde53e | 1233 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1234 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1235 | |
1236 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1237 | return 0; | |
1238 | } | |
27d5bf2a BH |
1239 | #else /* SPUFS_MMAP_4K */ |
1240 | #define spufs_signal2_mmap NULL | |
1241 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1242 | |
5dfe4c96 | 1243 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1244 | .open = spufs_signal2_open, |
43c2bbd9 | 1245 | .release = spufs_signal2_release, |
67207b96 AB |
1246 | .read = spufs_signal2_read, |
1247 | .write = spufs_signal2_write, | |
6df10a82 | 1248 | .mmap = spufs_signal2_mmap, |
fc15351d | 1249 | .llseek = no_llseek, |
67207b96 AB |
1250 | }; |
1251 | ||
d054b36f JK |
1252 | static const struct file_operations spufs_signal2_nosched_fops = { |
1253 | .open = spufs_signal2_open, | |
1254 | .release = spufs_signal2_release, | |
1255 | .write = spufs_signal2_write, | |
1256 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1257 | .llseek = no_llseek, |
d054b36f JK |
1258 | }; |
1259 | ||
104f0cc2 ME |
1260 | /* |
1261 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1262 | * work of acquiring (or not) the SPU context before calling through | |
1263 | * to the actual get routine. The set routine is called directly. | |
1264 | */ | |
1265 | #define SPU_ATTR_NOACQUIRE 0 | |
1266 | #define SPU_ATTR_ACQUIRE 1 | |
1267 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1268 | ||
1269 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1270 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1271 | { \ |
1272 | struct spu_context *ctx = data; \ | |
c9101bdb | 1273 | int ret = 0; \ |
104f0cc2 ME |
1274 | \ |
1275 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1276 | ret = spu_acquire(ctx); \ |
1277 | if (ret) \ | |
1278 | return ret; \ | |
197b1a82 | 1279 | *val = __get(ctx); \ |
104f0cc2 ME |
1280 | spu_release(ctx); \ |
1281 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1282 | ret = spu_acquire_saved(ctx); \ |
1283 | if (ret) \ | |
1284 | return ret; \ | |
197b1a82 | 1285 | *val = __get(ctx); \ |
104f0cc2 ME |
1286 | spu_release_saved(ctx); \ |
1287 | } else \ | |
197b1a82 | 1288 | *val = __get(ctx); \ |
104f0cc2 | 1289 | \ |
197b1a82 | 1290 | return 0; \ |
104f0cc2 | 1291 | } \ |
197b1a82 | 1292 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1293 | |
197b1a82 | 1294 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1295 | { |
1296 | struct spu_context *ctx = data; | |
c9101bdb | 1297 | int ret; |
67207b96 | 1298 | |
c9101bdb CH |
1299 | ret = spu_acquire(ctx); |
1300 | if (ret) | |
1301 | return ret; | |
8b3d6663 AB |
1302 | ctx->ops->signal1_type_set(ctx, val); |
1303 | spu_release(ctx); | |
197b1a82 CH |
1304 | |
1305 | return 0; | |
67207b96 AB |
1306 | } |
1307 | ||
104f0cc2 | 1308 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1309 | { |
bf1ab978 DGM |
1310 | return ctx->ops->signal1_type_get(ctx); |
1311 | } | |
104f0cc2 | 1312 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1313 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1314 | |
67207b96 | 1315 | |
197b1a82 | 1316 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1317 | { |
1318 | struct spu_context *ctx = data; | |
c9101bdb | 1319 | int ret; |
67207b96 | 1320 | |
c9101bdb CH |
1321 | ret = spu_acquire(ctx); |
1322 | if (ret) | |
1323 | return ret; | |
8b3d6663 AB |
1324 | ctx->ops->signal2_type_set(ctx, val); |
1325 | spu_release(ctx); | |
197b1a82 CH |
1326 | |
1327 | return 0; | |
67207b96 AB |
1328 | } |
1329 | ||
104f0cc2 | 1330 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1331 | { |
bf1ab978 DGM |
1332 | return ctx->ops->signal2_type_get(ctx); |
1333 | } | |
104f0cc2 | 1334 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1335 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1336 | |
27d5bf2a | 1337 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1338 | static int |
1339 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1340 | { |
87ff6090 | 1341 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b AB |
1342 | } |
1343 | ||
f0f37e2f | 1344 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1345 | .fault = spufs_mss_mmap_fault, |
d9379c4b AB |
1346 | }; |
1347 | ||
1348 | /* | |
1349 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1350 | */ |
1351 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1352 | { | |
1353 | if (!(vma->vm_flags & VM_SHARED)) | |
1354 | return -EINVAL; | |
1355 | ||
78bde53e | 1356 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1357 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b AB |
1358 | |
1359 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1360 | return 0; | |
1361 | } | |
27d5bf2a BH |
1362 | #else /* SPUFS_MMAP_4K */ |
1363 | #define spufs_mss_mmap NULL | |
1364 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1365 | |
1366 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1367 | { | |
1368 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1369 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1370 | |
1371 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1372 | |
47d3a5fa | 1373 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1374 | if (!i->i_openers++) |
1375 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1376 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1377 | return nonseekable_open(inode, file); |
1378 | } | |
1379 | ||
43c2bbd9 CH |
1380 | static int |
1381 | spufs_mss_release(struct inode *inode, struct file *file) | |
1382 | { | |
1383 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1384 | struct spu_context *ctx = i->i_ctx; | |
1385 | ||
47d3a5fa | 1386 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1387 | if (!--i->i_openers) |
1388 | ctx->mss = NULL; | |
47d3a5fa | 1389 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1390 | return 0; |
1391 | } | |
1392 | ||
5dfe4c96 | 1393 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1394 | .open = spufs_mss_open, |
43c2bbd9 | 1395 | .release = spufs_mss_release, |
d9379c4b | 1396 | .mmap = spufs_mss_mmap, |
fc15351d | 1397 | .llseek = no_llseek, |
27d5bf2a BH |
1398 | }; |
1399 | ||
b1e2270f NP |
1400 | static int |
1401 | spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
27d5bf2a | 1402 | { |
87ff6090 | 1403 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1404 | } |
1405 | ||
f0f37e2f | 1406 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1407 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1408 | }; |
1409 | ||
1410 | /* | |
1411 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1412 | */ | |
1413 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1414 | { | |
1415 | if (!(vma->vm_flags & VM_SHARED)) | |
1416 | return -EINVAL; | |
1417 | ||
78bde53e | 1418 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1419 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1420 | |
1421 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1426 | { | |
1427 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1428 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1429 | |
47d3a5fa | 1430 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1431 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1432 | if (!i->i_openers++) |
1433 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1434 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1435 | return nonseekable_open(inode, file); |
1436 | } | |
1437 | ||
43c2bbd9 CH |
1438 | static int |
1439 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1440 | { | |
1441 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1442 | struct spu_context *ctx = i->i_ctx; | |
1443 | ||
47d3a5fa | 1444 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1445 | if (!--i->i_openers) |
1446 | ctx->psmap = NULL; | |
47d3a5fa | 1447 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1448 | return 0; |
1449 | } | |
1450 | ||
5dfe4c96 | 1451 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1452 | .open = spufs_psmap_open, |
43c2bbd9 | 1453 | .release = spufs_psmap_release, |
27d5bf2a | 1454 | .mmap = spufs_psmap_mmap, |
fc15351d | 1455 | .llseek = no_llseek, |
d9379c4b AB |
1456 | }; |
1457 | ||
1458 | ||
27d5bf2a | 1459 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1460 | static int |
1461 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1462 | { |
87ff6090 | 1463 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1464 | } |
1465 | ||
f0f37e2f | 1466 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1467 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1468 | }; |
1469 | ||
1470 | /* | |
1471 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1472 | */ |
1473 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1474 | { | |
1475 | if (!(vma->vm_flags & VM_SHARED)) | |
1476 | return -EINVAL; | |
1477 | ||
78bde53e | 1478 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1479 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1480 | |
1481 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1482 | return 0; | |
1483 | } | |
27d5bf2a BH |
1484 | #else /* SPUFS_MMAP_4K */ |
1485 | #define spufs_mfc_mmap NULL | |
1486 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1487 | |
1488 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1489 | { | |
1490 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1491 | struct spu_context *ctx = i->i_ctx; | |
1492 | ||
1493 | /* we don't want to deal with DMA into other processes */ | |
1494 | if (ctx->owner != current->mm) | |
1495 | return -EINVAL; | |
1496 | ||
1497 | if (atomic_read(&inode->i_count) != 1) | |
1498 | return -EBUSY; | |
1499 | ||
47d3a5fa | 1500 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1501 | file->private_data = ctx; |
43c2bbd9 CH |
1502 | if (!i->i_openers++) |
1503 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1504 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1505 | return nonseekable_open(inode, file); |
1506 | } | |
1507 | ||
43c2bbd9 CH |
1508 | static int |
1509 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1510 | { | |
1511 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1512 | struct spu_context *ctx = i->i_ctx; | |
1513 | ||
47d3a5fa | 1514 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1515 | if (!--i->i_openers) |
1516 | ctx->mfc = NULL; | |
47d3a5fa | 1517 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1518 | return 0; |
1519 | } | |
1520 | ||
a33a7d73 AB |
1521 | /* interrupt-level mfc callback function. */ |
1522 | void spufs_mfc_callback(struct spu *spu) | |
1523 | { | |
1524 | struct spu_context *ctx = spu->ctx; | |
1525 | ||
e65c2f6f LB |
1526 | if (!ctx) |
1527 | return; | |
1528 | ||
a33a7d73 AB |
1529 | wake_up_all(&ctx->mfc_wq); |
1530 | ||
e48b1b45 | 1531 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1532 | if (ctx->mfc_fasync) { |
1533 | u32 free_elements, tagstatus; | |
1534 | unsigned int mask; | |
1535 | ||
1536 | /* no need for spu_acquire in interrupt context */ | |
1537 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1538 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1539 | ||
1540 | mask = 0; | |
1541 | if (free_elements & 0xffff) | |
1542 | mask |= POLLOUT; | |
1543 | if (tagstatus & ctx->tagwait) | |
1544 | mask |= POLLIN; | |
1545 | ||
1546 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1547 | } | |
1548 | } | |
1549 | ||
1550 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1551 | { | |
1552 | /* See if there is one tag group is complete */ | |
1553 | /* FIXME we need locking around tagwait */ | |
1554 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1555 | ctx->tagwait &= ~*status; | |
1556 | if (*status) | |
1557 | return 1; | |
1558 | ||
1559 | /* enable interrupt waiting for any tag group, | |
1560 | may silently fail if interrupts are already enabled */ | |
1561 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1562 | return 0; | |
1563 | } | |
1564 | ||
1565 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1566 | size_t size, loff_t *pos) | |
1567 | { | |
1568 | struct spu_context *ctx = file->private_data; | |
1569 | int ret = -EINVAL; | |
1570 | u32 status; | |
1571 | ||
1572 | if (size != 4) | |
1573 | goto out; | |
1574 | ||
c9101bdb CH |
1575 | ret = spu_acquire(ctx); |
1576 | if (ret) | |
1577 | return ret; | |
1578 | ||
1579 | ret = -EINVAL; | |
a33a7d73 AB |
1580 | if (file->f_flags & O_NONBLOCK) { |
1581 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1582 | if (!(status & ctx->tagwait)) | |
1583 | ret = -EAGAIN; | |
1584 | else | |
c9101bdb | 1585 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1586 | ctx->tagwait &= ~status; |
1587 | } else { | |
1588 | ret = spufs_wait(ctx->mfc_wq, | |
1589 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1590 | if (ret) |
1591 | goto out; | |
a33a7d73 AB |
1592 | } |
1593 | spu_release(ctx); | |
1594 | ||
a33a7d73 AB |
1595 | ret = 4; |
1596 | if (copy_to_user(buffer, &status, 4)) | |
1597 | ret = -EFAULT; | |
1598 | ||
1599 | out: | |
1600 | return ret; | |
1601 | } | |
1602 | ||
1603 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1604 | { | |
9477e455 | 1605 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1606 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1607 | ||
1608 | switch (cmd->cmd) { | |
1609 | case MFC_PUT_CMD: | |
1610 | case MFC_PUTF_CMD: | |
1611 | case MFC_PUTB_CMD: | |
1612 | case MFC_GET_CMD: | |
1613 | case MFC_GETF_CMD: | |
1614 | case MFC_GETB_CMD: | |
1615 | break; | |
1616 | default: | |
1617 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1618 | return -EIO; | |
1619 | } | |
1620 | ||
1621 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1622 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1623 | cmd->ea, cmd->lsa); |
1624 | return -EIO; | |
1625 | } | |
1626 | ||
1627 | switch (cmd->size & 0xf) { | |
1628 | case 1: | |
1629 | break; | |
1630 | case 2: | |
1631 | if (cmd->lsa & 1) | |
1632 | goto error; | |
1633 | break; | |
1634 | case 4: | |
1635 | if (cmd->lsa & 3) | |
1636 | goto error; | |
1637 | break; | |
1638 | case 8: | |
1639 | if (cmd->lsa & 7) | |
1640 | goto error; | |
1641 | break; | |
1642 | case 0: | |
1643 | if (cmd->lsa & 15) | |
1644 | goto error; | |
1645 | break; | |
1646 | error: | |
1647 | default: | |
1648 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1649 | cmd->lsa & 0xf, cmd->size); | |
1650 | return -EIO; | |
1651 | } | |
1652 | ||
1653 | if (cmd->size > 16 * 1024) { | |
1654 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1655 | return -EIO; | |
1656 | } | |
1657 | ||
1658 | if (cmd->tag & 0xfff0) { | |
1659 | /* we reserve the higher tag numbers for kernel use */ | |
1660 | pr_debug("invalid DMA tag\n"); | |
1661 | return -EIO; | |
1662 | } | |
1663 | ||
1664 | if (cmd->class) { | |
1665 | /* not supported in this version */ | |
1666 | pr_debug("invalid DMA class\n"); | |
1667 | return -EIO; | |
1668 | } | |
1669 | ||
1670 | return 0; | |
1671 | } | |
1672 | ||
1673 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1674 | struct mfc_dma_command cmd, | |
1675 | int *error) | |
1676 | { | |
1677 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1678 | if (*error == -EAGAIN) { | |
1679 | /* wait for any tag group to complete | |
1680 | so we have space for the new command */ | |
1681 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1682 | /* try again, because the queue might be | |
1683 | empty again */ | |
1684 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1685 | if (*error == -EAGAIN) | |
1686 | return 0; | |
1687 | } | |
1688 | return 1; | |
1689 | } | |
1690 | ||
1691 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1692 | size_t size, loff_t *pos) | |
1693 | { | |
1694 | struct spu_context *ctx = file->private_data; | |
1695 | struct mfc_dma_command cmd; | |
1696 | int ret = -EINVAL; | |
1697 | ||
1698 | if (size != sizeof cmd) | |
1699 | goto out; | |
1700 | ||
1701 | ret = -EFAULT; | |
1702 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1703 | goto out; | |
1704 | ||
1705 | ret = spufs_check_valid_dma(&cmd); | |
1706 | if (ret) | |
1707 | goto out; | |
1708 | ||
c9101bdb CH |
1709 | ret = spu_acquire(ctx); |
1710 | if (ret) | |
1711 | goto out; | |
1712 | ||
33bfd7a7 | 1713 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1714 | if (ret) |
1715 | goto out; | |
1716 | ||
a33a7d73 AB |
1717 | if (file->f_flags & O_NONBLOCK) { |
1718 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1719 | } else { | |
1720 | int status; | |
1721 | ret = spufs_wait(ctx->mfc_wq, | |
1722 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1723 | if (ret) |
1724 | goto out; | |
a33a7d73 AB |
1725 | if (status) |
1726 | ret = status; | |
1727 | } | |
a33a7d73 AB |
1728 | |
1729 | if (ret) | |
933b0e35 | 1730 | goto out_unlock; |
a33a7d73 AB |
1731 | |
1732 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1733 | ret = size; |
a33a7d73 | 1734 | |
933b0e35 KA |
1735 | out_unlock: |
1736 | spu_release(ctx); | |
a33a7d73 AB |
1737 | out: |
1738 | return ret; | |
1739 | } | |
1740 | ||
1741 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1742 | { | |
1743 | struct spu_context *ctx = file->private_data; | |
1744 | u32 free_elements, tagstatus; | |
1745 | unsigned int mask; | |
1746 | ||
933b0e35 KA |
1747 | poll_wait(file, &ctx->mfc_wq, wait); |
1748 | ||
c9101bdb CH |
1749 | /* |
1750 | * For now keep this uninterruptible and also ignore the rule | |
1751 | * that poll should not sleep. Will be fixed later. | |
1752 | */ | |
1753 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1754 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1755 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1756 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1757 | spu_release(ctx); | |
1758 | ||
a33a7d73 AB |
1759 | mask = 0; |
1760 | if (free_elements & 0xffff) | |
1761 | mask |= POLLOUT | POLLWRNORM; | |
1762 | if (tagstatus & ctx->tagwait) | |
1763 | mask |= POLLIN | POLLRDNORM; | |
1764 | ||
e48b1b45 | 1765 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1766 | free_elements, tagstatus, ctx->tagwait); |
1767 | ||
1768 | return mask; | |
1769 | } | |
1770 | ||
73b6af8a | 1771 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1772 | { |
1773 | struct spu_context *ctx = file->private_data; | |
1774 | int ret; | |
1775 | ||
c9101bdb CH |
1776 | ret = spu_acquire(ctx); |
1777 | if (ret) | |
eebead5b | 1778 | goto out; |
a33a7d73 AB |
1779 | #if 0 |
1780 | /* this currently hangs */ | |
1781 | ret = spufs_wait(ctx->mfc_wq, | |
1782 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1783 | if (ret) | |
1784 | goto out; | |
1785 | ret = spufs_wait(ctx->mfc_wq, | |
1786 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1787 | if (ret) |
1788 | goto out; | |
a33a7d73 AB |
1789 | #else |
1790 | ret = 0; | |
1791 | #endif | |
1792 | spu_release(ctx); | |
eebead5b | 1793 | out: |
a33a7d73 AB |
1794 | return ret; |
1795 | } | |
1796 | ||
02c24a82 JB |
1797 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1798 | { | |
496ad9aa | 1799 | struct inode *inode = file_inode(file); |
02c24a82 JB |
1800 | int err = filemap_write_and_wait_range(inode->i_mapping, start, end); |
1801 | if (!err) { | |
5955102c | 1802 | inode_lock(inode); |
02c24a82 | 1803 | err = spufs_mfc_flush(file, NULL); |
5955102c | 1804 | inode_unlock(inode); |
02c24a82 JB |
1805 | } |
1806 | return err; | |
a33a7d73 AB |
1807 | } |
1808 | ||
1809 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1810 | { | |
1811 | struct spu_context *ctx = file->private_data; | |
1812 | ||
1813 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1814 | } | |
1815 | ||
5dfe4c96 | 1816 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1817 | .open = spufs_mfc_open, |
43c2bbd9 | 1818 | .release = spufs_mfc_release, |
a33a7d73 AB |
1819 | .read = spufs_mfc_read, |
1820 | .write = spufs_mfc_write, | |
1821 | .poll = spufs_mfc_poll, | |
1822 | .flush = spufs_mfc_flush, | |
1823 | .fsync = spufs_mfc_fsync, | |
1824 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1825 | .mmap = spufs_mfc_mmap, |
fc15351d | 1826 | .llseek = no_llseek, |
a33a7d73 AB |
1827 | }; |
1828 | ||
197b1a82 | 1829 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1830 | { |
1831 | struct spu_context *ctx = data; | |
c9101bdb CH |
1832 | int ret; |
1833 | ||
1834 | ret = spu_acquire(ctx); | |
1835 | if (ret) | |
1836 | return ret; | |
8b3d6663 AB |
1837 | ctx->ops->npc_write(ctx, val); |
1838 | spu_release(ctx); | |
197b1a82 CH |
1839 | |
1840 | return 0; | |
67207b96 AB |
1841 | } |
1842 | ||
104f0cc2 | 1843 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1844 | { |
1845 | return ctx->ops->npc_read(ctx); | |
1846 | } | |
104f0cc2 ME |
1847 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1848 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1849 | |
197b1a82 | 1850 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1851 | { |
1852 | struct spu_context *ctx = data; | |
1853 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1854 | int ret; |
1855 | ||
1856 | ret = spu_acquire_saved(ctx); | |
1857 | if (ret) | |
1858 | return ret; | |
8b3d6663 | 1859 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1860 | spu_release_saved(ctx); |
197b1a82 CH |
1861 | |
1862 | return 0; | |
8b3d6663 AB |
1863 | } |
1864 | ||
104f0cc2 | 1865 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1866 | { |
8b3d6663 | 1867 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1868 | return lscsa->decr.slot[0]; |
1869 | } | |
104f0cc2 ME |
1870 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1871 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1872 | |
197b1a82 | 1873 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1874 | { |
1875 | struct spu_context *ctx = data; | |
c9101bdb CH |
1876 | int ret; |
1877 | ||
1878 | ret = spu_acquire_saved(ctx); | |
1879 | if (ret) | |
1880 | return ret; | |
d40a01d4 MN |
1881 | if (val) |
1882 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1883 | else | |
1884 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1885 | spu_release_saved(ctx); |
197b1a82 CH |
1886 | |
1887 | return 0; | |
8b3d6663 AB |
1888 | } |
1889 | ||
104f0cc2 | 1890 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1891 | { |
d40a01d4 MN |
1892 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1893 | return SPU_DECR_STATUS_RUNNING; | |
1894 | else | |
1895 | return 0; | |
bf1ab978 | 1896 | } |
104f0cc2 ME |
1897 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1898 | spufs_decr_status_set, "0x%llx\n", | |
1899 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1900 | |
197b1a82 | 1901 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1902 | { |
1903 | struct spu_context *ctx = data; | |
1904 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1905 | int ret; |
1906 | ||
1907 | ret = spu_acquire_saved(ctx); | |
1908 | if (ret) | |
1909 | return ret; | |
8b3d6663 | 1910 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1911 | spu_release_saved(ctx); |
197b1a82 CH |
1912 | |
1913 | return 0; | |
8b3d6663 AB |
1914 | } |
1915 | ||
104f0cc2 | 1916 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1917 | { |
8b3d6663 | 1918 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1919 | return lscsa->event_mask.slot[0]; |
1920 | } | |
1921 | ||
104f0cc2 ME |
1922 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1923 | spufs_event_mask_set, "0x%llx\n", | |
1924 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1925 | |
104f0cc2 | 1926 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1927 | { |
b9e3bd77 | 1928 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1929 | u64 stat; |
b9e3bd77 DGM |
1930 | stat = state->spu_chnlcnt_RW[0]; |
1931 | if (stat) | |
bf1ab978 DGM |
1932 | return state->spu_chnldata_RW[0]; |
1933 | return 0; | |
1934 | } | |
104f0cc2 ME |
1935 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1936 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1937 | |
197b1a82 | 1938 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1939 | { |
1940 | struct spu_context *ctx = data; | |
1941 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1942 | int ret; |
1943 | ||
1944 | ret = spu_acquire_saved(ctx); | |
1945 | if (ret) | |
1946 | return ret; | |
8b3d6663 | 1947 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1948 | spu_release_saved(ctx); |
197b1a82 CH |
1949 | |
1950 | return 0; | |
8b3d6663 AB |
1951 | } |
1952 | ||
104f0cc2 | 1953 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1954 | { |
8b3d6663 | 1955 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1956 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1957 | } |
104f0cc2 ME |
1958 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1959 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1960 | |
104f0cc2 | 1961 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1962 | { |
7b1a7014 AB |
1963 | u64 num; |
1964 | ||
7b1a7014 AB |
1965 | if (ctx->state == SPU_STATE_RUNNABLE) |
1966 | num = ctx->spu->number; | |
1967 | else | |
1968 | num = (unsigned int)-1; | |
7b1a7014 AB |
1969 | |
1970 | return num; | |
1971 | } | |
104f0cc2 ME |
1972 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1973 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1974 | |
104f0cc2 | 1975 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1976 | { |
1977 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1978 | return ctx->object_id; |
bf1ab978 DGM |
1979 | } |
1980 | ||
197b1a82 | 1981 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
1982 | { |
1983 | struct spu_context *ctx = data; | |
1984 | ctx->object_id = id; | |
197b1a82 CH |
1985 | |
1986 | return 0; | |
86767277 AB |
1987 | } |
1988 | ||
104f0cc2 ME |
1989 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1990 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1991 | |
104f0cc2 | 1992 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1993 | { |
bf1ab978 DGM |
1994 | return ctx->csa.priv2.spu_lslr_RW; |
1995 | } | |
104f0cc2 ME |
1996 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1997 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1998 | |
1999 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2000 | { | |
2001 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2002 | struct spu_context *ctx = i->i_ctx; | |
2003 | file->private_data = ctx; | |
2004 | return 0; | |
2005 | } | |
2006 | ||
cbe709c1 BH |
2007 | static int spufs_caps_show(struct seq_file *s, void *private) |
2008 | { | |
2009 | struct spu_context *ctx = s->private; | |
2010 | ||
2011 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2012 | seq_puts(s, "sched\n"); | |
2013 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2014 | seq_puts(s, "step\n"); | |
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2019 | { | |
2020 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2021 | } | |
2022 | ||
2023 | static const struct file_operations spufs_caps_fops = { | |
2024 | .open = spufs_caps_open, | |
2025 | .read = seq_read, | |
2026 | .llseek = seq_lseek, | |
2027 | .release = single_release, | |
2028 | }; | |
2029 | ||
bf1ab978 DGM |
2030 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2031 | char __user *buf, size_t len, loff_t *pos) | |
2032 | { | |
bf1ab978 DGM |
2033 | u32 data; |
2034 | ||
cbea9238 JK |
2035 | /* EOF if there's no entry in the mbox */ |
2036 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2037 | return 0; | |
2038 | ||
2039 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2040 | |
2041 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2042 | } | |
2043 | ||
69a2f00c DGM |
2044 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2045 | size_t len, loff_t *pos) | |
2046 | { | |
bf1ab978 | 2047 | int ret; |
69a2f00c | 2048 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2049 | |
2050 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2051 | return -EFAULT; | |
2052 | ||
c9101bdb CH |
2053 | ret = spu_acquire_saved(ctx); |
2054 | if (ret) | |
2055 | return ret; | |
69a2f00c | 2056 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2057 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2058 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2059 | spu_release_saved(ctx); |
69a2f00c | 2060 | |
bf1ab978 | 2061 | return ret; |
69a2f00c DGM |
2062 | } |
2063 | ||
5dfe4c96 | 2064 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2065 | .open = spufs_info_open, |
2066 | .read = spufs_mbox_info_read, | |
2067 | .llseek = generic_file_llseek, | |
2068 | }; | |
2069 | ||
bf1ab978 DGM |
2070 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2071 | char __user *buf, size_t len, loff_t *pos) | |
2072 | { | |
bf1ab978 DGM |
2073 | u32 data; |
2074 | ||
cbea9238 JK |
2075 | /* EOF if there's no entry in the ibox */ |
2076 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2077 | return 0; | |
2078 | ||
2079 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2080 | |
2081 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2082 | } | |
2083 | ||
69a2f00c DGM |
2084 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2085 | size_t len, loff_t *pos) | |
2086 | { | |
2087 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2088 | int ret; |
69a2f00c DGM |
2089 | |
2090 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2091 | return -EFAULT; | |
2092 | ||
c9101bdb CH |
2093 | ret = spu_acquire_saved(ctx); |
2094 | if (ret) | |
2095 | return ret; | |
69a2f00c | 2096 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2097 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2098 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2099 | spu_release_saved(ctx); |
69a2f00c | 2100 | |
bf1ab978 | 2101 | return ret; |
69a2f00c DGM |
2102 | } |
2103 | ||
5dfe4c96 | 2104 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2105 | .open = spufs_info_open, |
2106 | .read = spufs_ibox_info_read, | |
2107 | .llseek = generic_file_llseek, | |
2108 | }; | |
2109 | ||
bf1ab978 DGM |
2110 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2111 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2112 | { |
69a2f00c DGM |
2113 | int i, cnt; |
2114 | u32 data[4]; | |
2115 | u32 wbox_stat; | |
2116 | ||
bf1ab978 DGM |
2117 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2118 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2119 | for (i = 0; i < cnt; i++) { | |
2120 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2121 | } | |
2122 | ||
2123 | return simple_read_from_buffer(buf, len, pos, &data, | |
2124 | cnt * sizeof(u32)); | |
2125 | } | |
2126 | ||
2127 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2128 | size_t len, loff_t *pos) | |
2129 | { | |
2130 | struct spu_context *ctx = file->private_data; | |
2131 | int ret; | |
2132 | ||
69a2f00c DGM |
2133 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2134 | return -EFAULT; | |
2135 | ||
c9101bdb CH |
2136 | ret = spu_acquire_saved(ctx); |
2137 | if (ret) | |
2138 | return ret; | |
69a2f00c | 2139 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2140 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2141 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2142 | spu_release_saved(ctx); |
69a2f00c | 2143 | |
bf1ab978 | 2144 | return ret; |
69a2f00c DGM |
2145 | } |
2146 | ||
5dfe4c96 | 2147 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2148 | .open = spufs_info_open, |
2149 | .read = spufs_wbox_info_read, | |
2150 | .llseek = generic_file_llseek, | |
2151 | }; | |
2152 | ||
bf1ab978 DGM |
2153 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2154 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2155 | { |
b9e3bd77 DGM |
2156 | struct spu_dma_info info; |
2157 | struct mfc_cq_sr *qp, *spuqp; | |
2158 | int i; | |
2159 | ||
b9e3bd77 DGM |
2160 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2161 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2162 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2163 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2164 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2165 | for (i = 0; i < 16; i++) { | |
2166 | qp = &info.dma_info_command_data[i]; | |
2167 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2168 | ||
2169 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2170 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2171 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2172 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2173 | } | |
b9e3bd77 DGM |
2174 | |
2175 | return simple_read_from_buffer(buf, len, pos, &info, | |
2176 | sizeof info); | |
2177 | } | |
2178 | ||
bf1ab978 DGM |
2179 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2180 | size_t len, loff_t *pos) | |
2181 | { | |
2182 | struct spu_context *ctx = file->private_data; | |
2183 | int ret; | |
2184 | ||
2185 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2186 | return -EFAULT; | |
2187 | ||
c9101bdb CH |
2188 | ret = spu_acquire_saved(ctx); |
2189 | if (ret) | |
2190 | return ret; | |
bf1ab978 DGM |
2191 | spin_lock(&ctx->csa.register_lock); |
2192 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2193 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2194 | spu_release_saved(ctx); |
bf1ab978 DGM |
2195 | |
2196 | return ret; | |
2197 | } | |
2198 | ||
5dfe4c96 | 2199 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2200 | .open = spufs_info_open, |
2201 | .read = spufs_dma_info_read, | |
fc15351d | 2202 | .llseek = no_llseek, |
b9e3bd77 DGM |
2203 | }; |
2204 | ||
bf1ab978 DGM |
2205 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2206 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2207 | { |
b9e3bd77 | 2208 | struct spu_proxydma_info info; |
b9e3bd77 | 2209 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2210 | int ret = sizeof info; |
b9e3bd77 DGM |
2211 | int i; |
2212 | ||
2213 | if (len < ret) | |
2214 | return -EINVAL; | |
2215 | ||
2216 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2217 | return -EFAULT; | |
2218 | ||
b9e3bd77 DGM |
2219 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2220 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2221 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2222 | for (i = 0; i < 8; i++) { | |
2223 | qp = &info.proxydma_info_command_data[i]; | |
2224 | puqp = &ctx->csa.priv2.puq[i]; | |
2225 | ||
2226 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2227 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2228 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2229 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2230 | } | |
bf1ab978 DGM |
2231 | |
2232 | return simple_read_from_buffer(buf, len, pos, &info, | |
2233 | sizeof info); | |
2234 | } | |
2235 | ||
2236 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2237 | size_t len, loff_t *pos) | |
2238 | { | |
2239 | struct spu_context *ctx = file->private_data; | |
2240 | int ret; | |
2241 | ||
c9101bdb CH |
2242 | ret = spu_acquire_saved(ctx); |
2243 | if (ret) | |
2244 | return ret; | |
bf1ab978 DGM |
2245 | spin_lock(&ctx->csa.register_lock); |
2246 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2247 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2248 | spu_release_saved(ctx); |
b9e3bd77 | 2249 | |
b9e3bd77 DGM |
2250 | return ret; |
2251 | } | |
2252 | ||
5dfe4c96 | 2253 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2254 | .open = spufs_info_open, |
2255 | .read = spufs_proxydma_info_read, | |
fc15351d | 2256 | .llseek = no_llseek, |
b9e3bd77 DGM |
2257 | }; |
2258 | ||
476273ad CH |
2259 | static int spufs_show_tid(struct seq_file *s, void *private) |
2260 | { | |
2261 | struct spu_context *ctx = s->private; | |
2262 | ||
2263 | seq_printf(s, "%d\n", ctx->tid); | |
2264 | return 0; | |
2265 | } | |
2266 | ||
2267 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2268 | { | |
2269 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2270 | } | |
2271 | ||
2272 | static const struct file_operations spufs_tid_fops = { | |
2273 | .open = spufs_tid_open, | |
2274 | .read = seq_read, | |
2275 | .llseek = seq_lseek, | |
2276 | .release = single_release, | |
2277 | }; | |
2278 | ||
e9f8a0b6 CH |
2279 | static const char *ctx_state_names[] = { |
2280 | "user", "system", "iowait", "loaded" | |
2281 | }; | |
2282 | ||
2283 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2284 | enum spu_utilization_state state) |
e9f8a0b6 | 2285 | { |
27ec41d3 | 2286 | unsigned long long time = ctx->stats.times[state]; |
e9f8a0b6 | 2287 | |
27ec41d3 AD |
2288 | /* |
2289 | * In general, utilization statistics are updated by the controlling | |
2290 | * thread as the spu context moves through various well defined | |
2291 | * state transitions, but if the context is lazily loaded its | |
2292 | * utilization statistics are not updated as the controlling thread | |
2293 | * is not tightly coupled with the execution of the spu context. We | |
2294 | * calculate and apply the time delta from the last recorded state | |
2295 | * of the spu context. | |
2296 | */ | |
2297 | if (ctx->spu && ctx->stats.util_state == state) { | |
f2dec1ea | 2298 | time += ktime_get_ns() - ctx->stats.tstamp; |
27ec41d3 | 2299 | } |
e9f8a0b6 | 2300 | |
27ec41d3 | 2301 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2302 | } |
2303 | ||
2304 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2305 | { | |
2306 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2307 | ||
2308 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2309 | slb_flts += (ctx->spu->stats.slb_flt - | |
2310 | ctx->stats.slb_flt_base); | |
2311 | } | |
2312 | ||
2313 | return slb_flts; | |
2314 | } | |
2315 | ||
2316 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2317 | { | |
2318 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2319 | ||
2320 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2321 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2322 | ctx->stats.class2_intr_base); | |
2323 | } | |
2324 | ||
2325 | return class2_intrs; | |
2326 | } | |
2327 | ||
2328 | ||
2329 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2330 | { | |
2331 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2332 | int ret; |
2333 | ||
2334 | ret = spu_acquire(ctx); | |
2335 | if (ret) | |
2336 | return ret; | |
e9f8a0b6 | 2337 | |
e9f8a0b6 CH |
2338 | seq_printf(s, "%s %llu %llu %llu %llu " |
2339 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2340 | ctx_state_names[ctx->stats.util_state], |
2341 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2342 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2343 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2344 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2345 | ctx->stats.vol_ctx_switch, |
2346 | ctx->stats.invol_ctx_switch, | |
2347 | spufs_slb_flts(ctx), | |
2348 | ctx->stats.hash_flt, | |
2349 | ctx->stats.min_flt, | |
2350 | ctx->stats.maj_flt, | |
2351 | spufs_class2_intrs(ctx), | |
2352 | ctx->stats.libassist); | |
2353 | spu_release(ctx); | |
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2358 | { | |
2359 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2360 | } | |
2361 | ||
2362 | static const struct file_operations spufs_stat_fops = { | |
2363 | .open = spufs_stat_open, | |
2364 | .read = seq_read, | |
2365 | .llseek = seq_lseek, | |
2366 | .release = single_release, | |
2367 | }; | |
2368 | ||
5158e9b5 CH |
2369 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2370 | { | |
2371 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2372 | SWITCH_LOG_BUFSIZE; | |
2373 | } | |
2374 | ||
2375 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2376 | { | |
2377 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2378 | } | |
2379 | ||
2380 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2381 | { | |
2382 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2383 | int rc; |
2384 | ||
2385 | rc = spu_acquire(ctx); | |
2386 | if (rc) | |
2387 | return rc; | |
5158e9b5 | 2388 | |
5158e9b5 | 2389 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2390 | rc = -EBUSY; |
2391 | goto out; | |
5158e9b5 | 2392 | } |
f5ed0eb6 | 2393 | |
837ef884 | 2394 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2395 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2396 | GFP_KERNEL); | |
2397 | ||
2398 | if (!ctx->switch_log) { | |
2399 | rc = -ENOMEM; | |
2400 | goto out; | |
2401 | } | |
2402 | ||
837ef884 | 2403 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2404 | init_waitqueue_head(&ctx->switch_log->wait); |
2405 | rc = 0; | |
2406 | ||
2407 | out: | |
2408 | spu_release(ctx); | |
2409 | return rc; | |
2410 | } | |
2411 | ||
2412 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2413 | { | |
2414 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2415 | int rc; | |
2416 | ||
2417 | rc = spu_acquire(ctx); | |
2418 | if (rc) | |
2419 | return rc; | |
2420 | ||
2421 | kfree(ctx->switch_log); | |
2422 | ctx->switch_log = NULL; | |
2423 | spu_release(ctx); | |
5158e9b5 CH |
2424 | |
2425 | return 0; | |
5158e9b5 CH |
2426 | } |
2427 | ||
2428 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2429 | { | |
2430 | struct switch_log_entry *p; | |
2431 | ||
2432 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2433 | ||
2434 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2435 | (unsigned int) p->tstamp.tv_sec, | |
2436 | (unsigned int) p->tstamp.tv_nsec, | |
2437 | p->spu_id, | |
2438 | (unsigned int) p->type, | |
2439 | (unsigned int) p->val, | |
2440 | (unsigned long long) p->timebase); | |
2441 | } | |
2442 | ||
2443 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2444 | size_t len, loff_t *ppos) | |
2445 | { | |
496ad9aa | 2446 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2447 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2448 | int error = 0, cnt = 0; | |
2449 | ||
17e37675 | 2450 | if (!buf) |
5158e9b5 CH |
2451 | return -EINVAL; |
2452 | ||
f5ed0eb6 JK |
2453 | error = spu_acquire(ctx); |
2454 | if (error) | |
2455 | return error; | |
2456 | ||
5158e9b5 CH |
2457 | while (cnt < len) { |
2458 | char tbuf[128]; | |
2459 | int width; | |
2460 | ||
14f693ee JK |
2461 | if (spufs_switch_log_used(ctx) == 0) { |
2462 | if (cnt > 0) { | |
2463 | /* If there's data ready to go, we can | |
2464 | * just return straight away */ | |
2465 | break; | |
2466 | ||
2467 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2468 | error = -EAGAIN; |
2469 | break; | |
14f693ee JK |
2470 | |
2471 | } else { | |
2472 | /* spufs_wait will drop the mutex and | |
2473 | * re-acquire, but since we're in read(), the | |
2474 | * file cannot be _released (and so | |
2475 | * ctx->switch_log is stable). | |
2476 | */ | |
2477 | error = spufs_wait(ctx->switch_log->wait, | |
2478 | spufs_switch_log_used(ctx) > 0); | |
2479 | ||
2480 | /* On error, spufs_wait returns without the | |
2481 | * state mutex held */ | |
2482 | if (error) | |
2483 | return error; | |
2484 | ||
2485 | /* We may have had entries read from underneath | |
2486 | * us while we dropped the mutex in spufs_wait, | |
2487 | * so re-check */ | |
2488 | if (spufs_switch_log_used(ctx) == 0) | |
2489 | continue; | |
f5ed0eb6 | 2490 | } |
5158e9b5 CH |
2491 | } |
2492 | ||
5158e9b5 | 2493 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2494 | if (width < len) |
5158e9b5 CH |
2495 | ctx->switch_log->tail = |
2496 | (ctx->switch_log->tail + 1) % | |
2497 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2498 | else |
2499 | /* If the record is greater than space available return | |
2500 | * partial buffer (so far) */ | |
5158e9b5 CH |
2501 | break; |
2502 | ||
2503 | error = copy_to_user(buf + cnt, tbuf, width); | |
2504 | if (error) | |
2505 | break; | |
2506 | cnt += width; | |
2507 | } | |
2508 | ||
f5ed0eb6 JK |
2509 | spu_release(ctx); |
2510 | ||
5158e9b5 CH |
2511 | return cnt == 0 ? error : cnt; |
2512 | } | |
2513 | ||
2514 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2515 | { | |
496ad9aa | 2516 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2517 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2518 | unsigned int mask = 0; | |
f5ed0eb6 | 2519 | int rc; |
5158e9b5 CH |
2520 | |
2521 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2522 | ||
f5ed0eb6 JK |
2523 | rc = spu_acquire(ctx); |
2524 | if (rc) | |
2525 | return rc; | |
2526 | ||
5158e9b5 CH |
2527 | if (spufs_switch_log_used(ctx) > 0) |
2528 | mask |= POLLIN; | |
2529 | ||
f5ed0eb6 JK |
2530 | spu_release(ctx); |
2531 | ||
5158e9b5 CH |
2532 | return mask; |
2533 | } | |
2534 | ||
2535 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2536 | .open = spufs_switch_log_open, |
2537 | .read = spufs_switch_log_read, | |
2538 | .poll = spufs_switch_log_poll, | |
2539 | .release = spufs_switch_log_release, | |
fc15351d | 2540 | .llseek = no_llseek, |
5158e9b5 CH |
2541 | }; |
2542 | ||
f5ed0eb6 JK |
2543 | /** |
2544 | * Log a context switch event to a switch log reader. | |
2545 | * | |
2546 | * Must be called with ctx->state_mutex held. | |
2547 | */ | |
5158e9b5 CH |
2548 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2549 | u32 type, u32 val) | |
2550 | { | |
2551 | if (!ctx->switch_log) | |
2552 | return; | |
2553 | ||
5158e9b5 CH |
2554 | if (spufs_switch_log_avail(ctx) > 1) { |
2555 | struct switch_log_entry *p; | |
2556 | ||
2557 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2558 | ktime_get_ts(&p->tstamp); | |
2559 | p->timebase = get_tb(); | |
2560 | p->spu_id = spu ? spu->number : -1; | |
2561 | p->type = type; | |
2562 | p->val = val; | |
2563 | ||
2564 | ctx->switch_log->head = | |
2565 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2566 | } | |
5158e9b5 CH |
2567 | |
2568 | wake_up(&ctx->switch_log->wait); | |
2569 | } | |
e9f8a0b6 | 2570 | |
46deed69 LB |
2571 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2572 | { | |
2573 | struct spu_context *ctx = s->private; | |
2574 | u64 mfc_control_RW; | |
2575 | ||
2576 | mutex_lock(&ctx->state_mutex); | |
2577 | if (ctx->spu) { | |
2578 | struct spu *spu = ctx->spu; | |
2579 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2580 | ||
2581 | spin_lock_irq(&spu->register_lock); | |
2582 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2583 | spin_unlock_irq(&spu->register_lock); | |
2584 | } else { | |
2585 | struct spu_state *csa = &ctx->csa; | |
2586 | ||
2587 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2588 | } | |
2589 | ||
2590 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2591 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2592 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2593 | ctx->flags, | |
2594 | ctx->sched_flags, | |
2595 | ctx->prio, | |
2596 | ctx->time_slice, | |
2597 | ctx->spu ? ctx->spu->number : -1, | |
2598 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2599 | ctx->csa.class_0_pending, | |
2600 | ctx->csa.class_0_dar, | |
2601 | ctx->csa.class_1_dsisr, | |
2602 | mfc_control_RW, | |
2603 | ctx->ops->runcntl_read(ctx), | |
2604 | ctx->ops->status_read(ctx)); | |
2605 | ||
2606 | mutex_unlock(&ctx->state_mutex); | |
2607 | ||
2608 | return 0; | |
2609 | } | |
2610 | ||
2611 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2612 | { | |
2613 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2614 | } | |
2615 | ||
2616 | static const struct file_operations spufs_ctx_fops = { | |
2617 | .open = spufs_ctx_open, | |
2618 | .read = seq_read, | |
2619 | .llseek = seq_lseek, | |
2620 | .release = single_release, | |
2621 | }; | |
2622 | ||
74254647 | 2623 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2624 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2625 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2626 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2627 | { "mbox", &spufs_mbox_fops, 0444, }, |
2628 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2629 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2630 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2631 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2632 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2633 | { "signal1", &spufs_signal1_fops, 0666, }, |
2634 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2635 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2636 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2637 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2638 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2639 | { "lslr", &spufs_lslr_ops, 0444, }, |
2640 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2641 | { "mss", &spufs_mss_fops, 0666, }, | |
2642 | { "npc", &spufs_npc_ops, 0666, }, | |
2643 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2644 | { "decr", &spufs_decr_ops, 0666, }, |
2645 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2646 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2647 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2648 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2649 | { "phys-id", &spufs_id_ops, 0666, }, |
2650 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2651 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2652 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2653 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2654 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2655 | sizeof(struct spu_dma_info), }, | |
2656 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2657 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2658 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2659 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2660 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2661 | {}, |
2662 | }; | |
5737edd1 | 2663 | |
74254647 | 2664 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2665 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2666 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2667 | { "mbox", &spufs_mbox_fops, 0444, }, |
2668 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2669 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2670 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2671 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2672 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2673 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2674 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2675 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2676 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2677 | { "mss", &spufs_mss_fops, 0666, }, | |
2678 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2679 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2680 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2681 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2682 | { "phys-id", &spufs_id_ops, 0666, }, |
2683 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2684 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2685 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2686 | {}, |
2687 | }; | |
2688 | ||
74254647 | 2689 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2690 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2691 | {}, |
2692 | }; | |
bf1ab978 | 2693 | |
74254647 | 2694 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2695 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2696 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2697 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2698 | { "decr", NULL, spufs_decr_get, 19 }, | |
2699 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2700 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2701 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2702 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2703 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2704 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2705 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2706 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2707 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2708 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2709 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2710 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2711 | { "proxydma_info", __spufs_proxydma_info_read, | |
2712 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2713 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2714 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2715 | { NULL }, |
bf1ab978 | 2716 | }; |