Commit | Line | Data |
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67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
4b16f8e2 | 27 | #include <linux/export.h> |
d88cfffa | 28 | #include <linux/pagemap.h> |
67207b96 | 29 | #include <linux/poll.h> |
5110459f | 30 | #include <linux/ptrace.h> |
cbe709c1 | 31 | #include <linux/seq_file.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
67207b96 AB |
33 | |
34 | #include <asm/io.h> | |
dfe1e09f | 35 | #include <asm/time.h> |
67207b96 | 36 | #include <asm/spu.h> |
b9e3bd77 | 37 | #include <asm/spu_info.h> |
7c0f6ba6 | 38 | #include <linux/uaccess.h> |
67207b96 AB |
39 | |
40 | #include "spufs.h" | |
ae142e0c | 41 | #include "sputrace.h" |
67207b96 | 42 | |
27d5bf2a BH |
43 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
44 | ||
197b1a82 CH |
45 | /* Simple attribute files */ |
46 | struct spufs_attr { | |
47 | int (*get)(void *, u64 *); | |
48 | int (*set)(void *, u64); | |
49 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
50 | char set_buf[24]; | |
51 | void *data; | |
52 | const char *fmt; /* format for read operation */ | |
53 | struct mutex mutex; /* protects access to these buffers */ | |
54 | }; | |
55 | ||
56 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
57 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
58 | const char *fmt) | |
59 | { | |
60 | struct spufs_attr *attr; | |
61 | ||
62 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
63 | if (!attr) | |
64 | return -ENOMEM; | |
65 | ||
66 | attr->get = get; | |
67 | attr->set = set; | |
68 | attr->data = inode->i_private; | |
69 | attr->fmt = fmt; | |
70 | mutex_init(&attr->mutex); | |
71 | file->private_data = attr; | |
72 | ||
73 | return nonseekable_open(inode, file); | |
74 | } | |
75 | ||
76 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
77 | { | |
78 | kfree(file->private_data); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
83 | size_t len, loff_t *ppos) | |
84 | { | |
85 | struct spufs_attr *attr; | |
86 | size_t size; | |
87 | ssize_t ret; | |
88 | ||
89 | attr = file->private_data; | |
90 | if (!attr->get) | |
91 | return -EACCES; | |
92 | ||
93 | ret = mutex_lock_interruptible(&attr->mutex); | |
94 | if (ret) | |
95 | return ret; | |
96 | ||
97 | if (*ppos) { /* continued read */ | |
98 | size = strlen(attr->get_buf); | |
99 | } else { /* first read */ | |
100 | u64 val; | |
101 | ret = attr->get(attr->data, &val); | |
102 | if (ret) | |
103 | goto out; | |
104 | ||
105 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
106 | attr->fmt, (unsigned long long)val); | |
107 | } | |
108 | ||
109 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
110 | out: | |
111 | mutex_unlock(&attr->mutex); | |
112 | return ret; | |
113 | } | |
114 | ||
115 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
116 | size_t len, loff_t *ppos) | |
117 | { | |
118 | struct spufs_attr *attr; | |
119 | u64 val; | |
120 | size_t size; | |
121 | ssize_t ret; | |
122 | ||
123 | attr = file->private_data; | |
124 | if (!attr->set) | |
125 | return -EACCES; | |
126 | ||
127 | ret = mutex_lock_interruptible(&attr->mutex); | |
128 | if (ret) | |
129 | return ret; | |
130 | ||
131 | ret = -EFAULT; | |
132 | size = min(sizeof(attr->set_buf) - 1, len); | |
133 | if (copy_from_user(attr->set_buf, buf, size)) | |
134 | goto out; | |
135 | ||
136 | ret = len; /* claim we got the whole input */ | |
137 | attr->set_buf[size] = '\0'; | |
138 | val = simple_strtol(attr->set_buf, NULL, 0); | |
139 | attr->set(attr->data, val); | |
140 | out: | |
141 | mutex_unlock(&attr->mutex); | |
142 | return ret; | |
143 | } | |
144 | ||
145 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
146 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
147 | { \ | |
148 | __simple_attr_check_format(__fmt, 0ull); \ | |
149 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
150 | } \ | |
828c0950 | 151 | static const struct file_operations __fops = { \ |
197b1a82 CH |
152 | .open = __fops ## _open, \ |
153 | .release = spufs_attr_release, \ | |
154 | .read = spufs_attr_read, \ | |
155 | .write = spufs_attr_write, \ | |
fc15351d | 156 | .llseek = generic_file_llseek, \ |
197b1a82 CH |
157 | }; |
158 | ||
cbe709c1 | 159 | |
67207b96 AB |
160 | static int |
161 | spufs_mem_open(struct inode *inode, struct file *file) | |
162 | { | |
163 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 164 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 165 | |
47d3a5fa | 166 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 167 | file->private_data = ctx; |
43c2bbd9 CH |
168 | if (!i->i_openers++) |
169 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 170 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
171 | return 0; |
172 | } | |
173 | ||
174 | static int | |
175 | spufs_mem_release(struct inode *inode, struct file *file) | |
176 | { | |
177 | struct spufs_inode_info *i = SPUFS_I(inode); | |
178 | struct spu_context *ctx = i->i_ctx; | |
179 | ||
47d3a5fa | 180 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
181 | if (!--i->i_openers) |
182 | ctx->local_store = NULL; | |
47d3a5fa | 183 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
184 | return 0; |
185 | } | |
186 | ||
bf1ab978 DGM |
187 | static ssize_t |
188 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
189 | size_t size, loff_t *pos) | |
190 | { | |
191 | char *local_store = ctx->ops->get_ls(ctx); | |
192 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
193 | LS_SIZE); | |
194 | } | |
195 | ||
67207b96 AB |
196 | static ssize_t |
197 | spufs_mem_read(struct file *file, char __user *buffer, | |
198 | size_t size, loff_t *pos) | |
199 | { | |
bf1ab978 | 200 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 201 | ssize_t ret; |
67207b96 | 202 | |
c9101bdb CH |
203 | ret = spu_acquire(ctx); |
204 | if (ret) | |
205 | return ret; | |
bf1ab978 | 206 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 207 | spu_release(ctx); |
c9101bdb | 208 | |
67207b96 AB |
209 | return ret; |
210 | } | |
211 | ||
212 | static ssize_t | |
213 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 214 | size_t size, loff_t *ppos) |
67207b96 AB |
215 | { |
216 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 217 | char *local_store; |
aa0ed2bd | 218 | loff_t pos = *ppos; |
8b3d6663 | 219 | int ret; |
67207b96 | 220 | |
aa0ed2bd | 221 | if (pos > LS_SIZE) |
67207b96 | 222 | return -EFBIG; |
8b3d6663 | 223 | |
c9101bdb CH |
224 | ret = spu_acquire(ctx); |
225 | if (ret) | |
226 | return ret; | |
227 | ||
8b3d6663 | 228 | local_store = ctx->ops->get_ls(ctx); |
63c3b9d7 | 229 | size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); |
8b3d6663 | 230 | spu_release(ctx); |
aa0ed2bd | 231 | |
aa0ed2bd | 232 | return size; |
67207b96 AB |
233 | } |
234 | ||
e807f02c | 235 | static vm_fault_t |
11bac800 | 236 | spufs_mem_mmap_fault(struct vm_fault *vmf) |
8b3d6663 | 237 | { |
11bac800 | 238 | struct vm_area_struct *vma = vmf->vma; |
f1fa74f4 | 239 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 240 | unsigned long pfn, offset; |
e807f02c | 241 | vm_fault_t ret; |
b1e2270f | 242 | |
b1e2270f | 243 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 244 | if (offset >= LS_SIZE) |
b1e2270f | 245 | return VM_FAULT_SIGBUS; |
128b8546 | 246 | |
b1e2270f | 247 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
1a29d85e | 248 | vmf->address, offset); |
f1fa74f4 | 249 | |
c9101bdb | 250 | if (spu_acquire(ctx)) |
b1e2270f | 251 | return VM_FAULT_NOPAGE; |
8b3d6663 | 252 | |
ac91cb8d | 253 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 254 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 255 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 256 | } else { |
64b3d0e8 | 257 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 258 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 259 | } |
e807f02c | 260 | ret = vmf_insert_pfn(vma, vmf->address, pfn); |
8b3d6663 | 261 | |
78bde53e | 262 | spu_release(ctx); |
8b3d6663 | 263 | |
e807f02c | 264 | return ret; |
8b3d6663 AB |
265 | } |
266 | ||
a352894d BH |
267 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
268 | unsigned long address, | |
269 | void *buf, int len, int write) | |
270 | { | |
271 | struct spu_context *ctx = vma->vm_file->private_data; | |
272 | unsigned long offset = address - vma->vm_start; | |
273 | char *local_store; | |
274 | ||
275 | if (write && !(vma->vm_flags & VM_WRITE)) | |
276 | return -EACCES; | |
277 | if (spu_acquire(ctx)) | |
278 | return -EINTR; | |
279 | if ((offset + len) > vma->vm_end) | |
280 | len = vma->vm_end - offset; | |
281 | local_store = ctx->ops->get_ls(ctx); | |
282 | if (write) | |
283 | memcpy_toio(local_store + offset, buf, len); | |
284 | else | |
285 | memcpy_fromio(buf, local_store + offset, len); | |
286 | spu_release(ctx); | |
287 | return len; | |
288 | } | |
78bde53e | 289 | |
f0f37e2f | 290 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 291 | .fault = spufs_mem_mmap_fault, |
a352894d | 292 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
293 | }; |
294 | ||
f1fa74f4 | 295 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 296 | { |
8b3d6663 AB |
297 | if (!(vma->vm_flags & VM_SHARED)) |
298 | return -EINVAL; | |
67207b96 | 299 | |
78bde53e | 300 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 301 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
302 | |
303 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
304 | return 0; |
305 | } | |
306 | ||
5dfe4c96 | 307 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
308 | .open = spufs_mem_open, |
309 | .release = spufs_mem_release, | |
310 | .read = spufs_mem_read, | |
311 | .write = spufs_mem_write, | |
312 | .llseek = generic_file_llseek, | |
313 | .mmap = spufs_mem_mmap, | |
8b3d6663 AB |
314 | }; |
315 | ||
e807f02c | 316 | static vm_fault_t spufs_ps_fault(struct vm_fault *vmf, |
78bde53e | 317 | unsigned long ps_offs, |
27d5bf2a | 318 | unsigned long ps_size) |
6df10a82 | 319 | { |
11bac800 | 320 | struct spu_context *ctx = vmf->vma->vm_file->private_data; |
b1e2270f | 321 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
e807f02c SJ |
322 | int err = 0; |
323 | vm_fault_t ret = VM_FAULT_NOPAGE; | |
6df10a82 | 324 | |
b1e2270f | 325 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 326 | |
27d5bf2a | 327 | if (offset >= ps_size) |
b1e2270f | 328 | return VM_FAULT_SIGBUS; |
6df10a82 | 329 | |
60657263 JK |
330 | if (fatal_signal_pending(current)) |
331 | return VM_FAULT_SIGBUS; | |
332 | ||
d5883137 JK |
333 | /* |
334 | * Because we release the mmap_sem, the context may be destroyed while | |
335 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
336 | * in the meantime. | |
337 | */ | |
338 | get_spu_context(ctx); | |
339 | ||
33bfd7a7 AB |
340 | /* |
341 | * We have to wait for context to be loaded before we have | |
342 | * pages to hand out to the user, but we don't want to wait | |
343 | * with the mmap_sem held. | |
344 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 345 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 346 | * hanged. |
78bde53e | 347 | */ |
c9101bdb | 348 | if (spu_acquire(ctx)) |
d5883137 | 349 | goto refault; |
c9101bdb | 350 | |
33bfd7a7 AB |
351 | if (ctx->state == SPU_STATE_SAVED) { |
352 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 353 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
e807f02c | 354 | err = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 355 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 356 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
357 | } else { |
358 | area = ctx->spu->problem_phys + ps_offs; | |
e807f02c SJ |
359 | ret = vmf_insert_pfn(vmf->vma, vmf->address, |
360 | (area + offset) >> PAGE_SHIFT); | |
b1e2270f | 361 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); |
33bfd7a7 | 362 | } |
6df10a82 | 363 | |
e807f02c | 364 | if (!err) |
eebead5b | 365 | spu_release(ctx); |
d5883137 JK |
366 | |
367 | refault: | |
368 | put_spu_context(ctx); | |
e807f02c | 369 | return ret; |
6df10a82 MN |
370 | } |
371 | ||
27d5bf2a | 372 | #if SPUFS_MMAP_4K |
e807f02c | 373 | static vm_fault_t spufs_cntl_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 374 | { |
11bac800 | 375 | return spufs_ps_fault(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, | |
658829df | 462 | .llseek = no_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 | ||
c5bf68fe | 591 | return stream_open(inode, file); |
67207b96 AB |
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 | ||
96d4f267 | 612 | if (!access_ok(buf, len)) |
cdcc89bb AB |
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 | /* interrupt-level ibox callback function. */ |
690 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 691 | { |
8b3d6663 AB |
692 | struct spu_context *ctx = spu->ctx; |
693 | ||
7d7be3aa AV |
694 | if (ctx) |
695 | wake_up_all(&ctx->ibox_wq); | |
67207b96 AB |
696 | } |
697 | ||
cdcc89bb AB |
698 | /* |
699 | * Read as many bytes from the interrupt mailbox as possible, until | |
700 | * one of the conditions becomes true: | |
701 | * | |
702 | * - no more data available in the mailbox | |
703 | * - end of the user provided buffer | |
704 | * - end of the mapped area | |
705 | * | |
706 | * If the file is opened without O_NONBLOCK, we wait here until | |
707 | * any data is available, but return when we have been able to | |
708 | * read something. | |
709 | */ | |
67207b96 AB |
710 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
711 | size_t len, loff_t *pos) | |
712 | { | |
8b3d6663 | 713 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
714 | u32 ibox_data, __user *udata; |
715 | ssize_t count; | |
67207b96 AB |
716 | |
717 | if (len < 4) | |
718 | return -EINVAL; | |
719 | ||
96d4f267 | 720 | if (!access_ok(buf, len)) |
cdcc89bb AB |
721 | return -EFAULT; |
722 | ||
723 | udata = (void __user *)buf; | |
724 | ||
c9101bdb CH |
725 | count = spu_acquire(ctx); |
726 | if (count) | |
eebead5b | 727 | goto out; |
67207b96 | 728 | |
cdcc89bb AB |
729 | /* wait only for the first element */ |
730 | count = 0; | |
67207b96 | 731 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 732 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 733 | count = -EAGAIN; |
eebead5b CH |
734 | goto out_unlock; |
735 | } | |
67207b96 | 736 | } else { |
cdcc89bb | 737 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
738 | if (count) |
739 | goto out; | |
67207b96 AB |
740 | } |
741 | ||
cdcc89bb AB |
742 | /* if we can't write at all, return -EFAULT */ |
743 | count = __put_user(ibox_data, udata); | |
744 | if (count) | |
eebead5b | 745 | goto out_unlock; |
8b3d6663 | 746 | |
cdcc89bb AB |
747 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
748 | int ret; | |
749 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
750 | if (ret == 0) | |
751 | break; | |
752 | /* | |
753 | * at the end of the mapped area, we can fault | |
754 | * but still need to return the data we have | |
755 | * read successfully so far. | |
756 | */ | |
757 | ret = __put_user(ibox_data, udata); | |
758 | if (ret) | |
759 | break; | |
760 | } | |
67207b96 | 761 | |
eebead5b | 762 | out_unlock: |
cdcc89bb | 763 | spu_release(ctx); |
eebead5b | 764 | out: |
cdcc89bb | 765 | return count; |
67207b96 AB |
766 | } |
767 | ||
8153a5ea | 768 | static __poll_t spufs_ibox_poll(struct file *file, poll_table *wait) |
67207b96 | 769 | { |
8b3d6663 | 770 | struct spu_context *ctx = file->private_data; |
8153a5ea | 771 | __poll_t mask; |
67207b96 | 772 | |
8b3d6663 | 773 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 774 | |
c9101bdb CH |
775 | /* |
776 | * For now keep this uninterruptible and also ignore the rule | |
777 | * that poll should not sleep. Will be fixed later. | |
778 | */ | |
779 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 780 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLIN | EPOLLRDNORM); |
3a843d7c | 781 | spu_release(ctx); |
67207b96 AB |
782 | |
783 | return mask; | |
784 | } | |
785 | ||
5dfe4c96 | 786 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
787 | .open = spufs_pipe_open, |
788 | .read = spufs_ibox_read, | |
789 | .poll = spufs_ibox_poll, | |
fc15351d | 790 | .llseek = no_llseek, |
67207b96 AB |
791 | }; |
792 | ||
793 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
794 | size_t len, loff_t *pos) | |
795 | { | |
8b3d6663 | 796 | struct spu_context *ctx = file->private_data; |
c9101bdb | 797 | ssize_t ret; |
67207b96 AB |
798 | u32 ibox_stat; |
799 | ||
800 | if (len < 4) | |
801 | return -EINVAL; | |
802 | ||
c9101bdb CH |
803 | ret = spu_acquire(ctx); |
804 | if (ret) | |
805 | return ret; | |
8b3d6663 AB |
806 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
807 | spu_release(ctx); | |
67207b96 AB |
808 | |
809 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
810 | return -EFAULT; | |
811 | ||
812 | return 4; | |
813 | } | |
814 | ||
5dfe4c96 | 815 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
816 | .open = spufs_pipe_open, |
817 | .read = spufs_ibox_stat_read, | |
fc15351d | 818 | .llseek = no_llseek, |
67207b96 AB |
819 | }; |
820 | ||
821 | /* low-level mailbox write */ | |
8b3d6663 | 822 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 823 | { |
8b3d6663 AB |
824 | return ctx->ops->wbox_write(ctx, data); |
825 | } | |
67207b96 | 826 | |
8b3d6663 AB |
827 | /* interrupt-level wbox callback function. */ |
828 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 829 | { |
8b3d6663 AB |
830 | struct spu_context *ctx = spu->ctx; |
831 | ||
7d7be3aa AV |
832 | if (ctx) |
833 | wake_up_all(&ctx->wbox_wq); | |
67207b96 AB |
834 | } |
835 | ||
cdcc89bb AB |
836 | /* |
837 | * Write as many bytes to the interrupt mailbox as possible, until | |
838 | * one of the conditions becomes true: | |
839 | * | |
840 | * - the mailbox is full | |
841 | * - end of the user provided buffer | |
842 | * - end of the mapped area | |
843 | * | |
844 | * If the file is opened without O_NONBLOCK, we wait here until | |
027dfac6 | 845 | * space is available, but return when we have been able to |
cdcc89bb AB |
846 | * write something. |
847 | */ | |
67207b96 AB |
848 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
849 | size_t len, loff_t *pos) | |
850 | { | |
8b3d6663 | 851 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
852 | u32 wbox_data, __user *udata; |
853 | ssize_t count; | |
67207b96 AB |
854 | |
855 | if (len < 4) | |
856 | return -EINVAL; | |
857 | ||
cdcc89bb | 858 | udata = (void __user *)buf; |
96d4f267 | 859 | if (!access_ok(buf, len)) |
cdcc89bb AB |
860 | return -EFAULT; |
861 | ||
862 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
863 | return -EFAULT; |
864 | ||
c9101bdb CH |
865 | count = spu_acquire(ctx); |
866 | if (count) | |
eebead5b | 867 | goto out; |
8b3d6663 | 868 | |
cdcc89bb AB |
869 | /* |
870 | * make sure we can at least write one element, by waiting | |
871 | * in case of !O_NONBLOCK | |
872 | */ | |
873 | count = 0; | |
67207b96 | 874 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 875 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 876 | count = -EAGAIN; |
eebead5b CH |
877 | goto out_unlock; |
878 | } | |
67207b96 | 879 | } else { |
cdcc89bb | 880 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
881 | if (count) |
882 | goto out; | |
67207b96 AB |
883 | } |
884 | ||
8b3d6663 | 885 | |
96de0e25 | 886 | /* write as much as possible */ |
cdcc89bb AB |
887 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
888 | int ret; | |
889 | ret = __get_user(wbox_data, udata); | |
890 | if (ret) | |
891 | break; | |
892 | ||
893 | ret = spu_wbox_write(ctx, wbox_data); | |
894 | if (ret == 0) | |
895 | break; | |
896 | } | |
897 | ||
eebead5b | 898 | out_unlock: |
cdcc89bb | 899 | spu_release(ctx); |
eebead5b | 900 | out: |
cdcc89bb | 901 | return count; |
67207b96 AB |
902 | } |
903 | ||
8153a5ea | 904 | static __poll_t spufs_wbox_poll(struct file *file, poll_table *wait) |
67207b96 | 905 | { |
8b3d6663 | 906 | struct spu_context *ctx = file->private_data; |
8153a5ea | 907 | __poll_t mask; |
67207b96 | 908 | |
8b3d6663 | 909 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 910 | |
c9101bdb CH |
911 | /* |
912 | * For now keep this uninterruptible and also ignore the rule | |
913 | * that poll should not sleep. Will be fixed later. | |
914 | */ | |
915 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 916 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLOUT | EPOLLWRNORM); |
3a843d7c | 917 | spu_release(ctx); |
67207b96 AB |
918 | |
919 | return mask; | |
920 | } | |
921 | ||
5dfe4c96 | 922 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
923 | .open = spufs_pipe_open, |
924 | .write = spufs_wbox_write, | |
925 | .poll = spufs_wbox_poll, | |
fc15351d | 926 | .llseek = no_llseek, |
67207b96 AB |
927 | }; |
928 | ||
929 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
930 | size_t len, loff_t *pos) | |
931 | { | |
8b3d6663 | 932 | struct spu_context *ctx = file->private_data; |
c9101bdb | 933 | ssize_t ret; |
67207b96 AB |
934 | u32 wbox_stat; |
935 | ||
936 | if (len < 4) | |
937 | return -EINVAL; | |
938 | ||
c9101bdb CH |
939 | ret = spu_acquire(ctx); |
940 | if (ret) | |
941 | return ret; | |
8b3d6663 AB |
942 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
943 | spu_release(ctx); | |
67207b96 AB |
944 | |
945 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
946 | return -EFAULT; | |
947 | ||
948 | return 4; | |
949 | } | |
950 | ||
5dfe4c96 | 951 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
952 | .open = spufs_pipe_open, |
953 | .read = spufs_wbox_stat_read, | |
fc15351d | 954 | .llseek = no_llseek, |
67207b96 AB |
955 | }; |
956 | ||
6df10a82 MN |
957 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
958 | { | |
959 | struct spufs_inode_info *i = SPUFS_I(inode); | |
960 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 961 | |
47d3a5fa | 962 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 963 | file->private_data = ctx; |
43c2bbd9 CH |
964 | if (!i->i_openers++) |
965 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 966 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
967 | return nonseekable_open(inode, file); |
968 | } | |
969 | ||
43c2bbd9 CH |
970 | static int |
971 | spufs_signal1_release(struct inode *inode, struct file *file) | |
972 | { | |
973 | struct spufs_inode_info *i = SPUFS_I(inode); | |
974 | struct spu_context *ctx = i->i_ctx; | |
975 | ||
47d3a5fa | 976 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
977 | if (!--i->i_openers) |
978 | ctx->signal1 = NULL; | |
47d3a5fa | 979 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
980 | return 0; |
981 | } | |
982 | ||
bf1ab978 | 983 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
984 | size_t len, loff_t *pos) |
985 | { | |
17f88ceb | 986 | int ret = 0; |
67207b96 AB |
987 | u32 data; |
988 | ||
67207b96 AB |
989 | if (len < 4) |
990 | return -EINVAL; | |
991 | ||
17f88ceb DGM |
992 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
993 | data = ctx->csa.spu_chnldata_RW[3]; | |
994 | ret = 4; | |
995 | } | |
8b3d6663 | 996 | |
17f88ceb DGM |
997 | if (!ret) |
998 | goto out; | |
999 | ||
67207b96 AB |
1000 | if (copy_to_user(buf, &data, 4)) |
1001 | return -EFAULT; | |
1002 | ||
17f88ceb DGM |
1003 | out: |
1004 | return ret; | |
67207b96 AB |
1005 | } |
1006 | ||
bf1ab978 DGM |
1007 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1008 | size_t len, loff_t *pos) | |
1009 | { | |
1010 | int ret; | |
1011 | struct spu_context *ctx = file->private_data; | |
1012 | ||
c9101bdb CH |
1013 | ret = spu_acquire_saved(ctx); |
1014 | if (ret) | |
1015 | return ret; | |
bf1ab978 | 1016 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1017 | spu_release_saved(ctx); |
bf1ab978 DGM |
1018 | |
1019 | return ret; | |
1020 | } | |
1021 | ||
67207b96 AB |
1022 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1023 | size_t len, loff_t *pos) | |
1024 | { | |
1025 | struct spu_context *ctx; | |
c9101bdb | 1026 | ssize_t ret; |
67207b96 AB |
1027 | u32 data; |
1028 | ||
1029 | ctx = file->private_data; | |
67207b96 AB |
1030 | |
1031 | if (len < 4) | |
1032 | return -EINVAL; | |
1033 | ||
1034 | if (copy_from_user(&data, buf, 4)) | |
1035 | return -EFAULT; | |
1036 | ||
c9101bdb CH |
1037 | ret = spu_acquire(ctx); |
1038 | if (ret) | |
1039 | return ret; | |
8b3d6663 AB |
1040 | ctx->ops->signal1_write(ctx, data); |
1041 | spu_release(ctx); | |
67207b96 AB |
1042 | |
1043 | return 4; | |
1044 | } | |
1045 | ||
e807f02c | 1046 | static vm_fault_t |
11bac800 | 1047 | spufs_signal1_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1048 | { |
87ff6090 | 1049 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1050 | return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1051 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1052 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1053 | * signal 1 and 2 area | |
1054 | */ | |
11bac800 | 1055 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1056 | #else |
1057 | #error unsupported page size | |
1058 | #endif | |
6df10a82 MN |
1059 | } |
1060 | ||
f0f37e2f | 1061 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1062 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1063 | }; |
1064 | ||
1065 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1066 | { | |
1067 | if (!(vma->vm_flags & VM_SHARED)) | |
1068 | return -EINVAL; | |
1069 | ||
78bde53e | 1070 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1071 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1072 | |
1073 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1074 | return 0; | |
1075 | } | |
6df10a82 | 1076 | |
5dfe4c96 | 1077 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1078 | .open = spufs_signal1_open, |
43c2bbd9 | 1079 | .release = spufs_signal1_release, |
67207b96 AB |
1080 | .read = spufs_signal1_read, |
1081 | .write = spufs_signal1_write, | |
6df10a82 | 1082 | .mmap = spufs_signal1_mmap, |
fc15351d | 1083 | .llseek = no_llseek, |
67207b96 AB |
1084 | }; |
1085 | ||
d054b36f JK |
1086 | static const struct file_operations spufs_signal1_nosched_fops = { |
1087 | .open = spufs_signal1_open, | |
1088 | .release = spufs_signal1_release, | |
1089 | .write = spufs_signal1_write, | |
1090 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1091 | .llseek = no_llseek, |
d054b36f JK |
1092 | }; |
1093 | ||
6df10a82 MN |
1094 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1095 | { | |
1096 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1097 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1098 | |
47d3a5fa | 1099 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1100 | file->private_data = ctx; |
43c2bbd9 CH |
1101 | if (!i->i_openers++) |
1102 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1103 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1104 | return nonseekable_open(inode, file); |
1105 | } | |
1106 | ||
43c2bbd9 CH |
1107 | static int |
1108 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1109 | { | |
1110 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1111 | struct spu_context *ctx = i->i_ctx; | |
1112 | ||
47d3a5fa | 1113 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1114 | if (!--i->i_openers) |
1115 | ctx->signal2 = NULL; | |
47d3a5fa | 1116 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1117 | return 0; |
1118 | } | |
1119 | ||
bf1ab978 | 1120 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1121 | size_t len, loff_t *pos) |
1122 | { | |
17f88ceb | 1123 | int ret = 0; |
67207b96 AB |
1124 | u32 data; |
1125 | ||
67207b96 AB |
1126 | if (len < 4) |
1127 | return -EINVAL; | |
1128 | ||
17f88ceb DGM |
1129 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1130 | data = ctx->csa.spu_chnldata_RW[4]; | |
1131 | ret = 4; | |
1132 | } | |
8b3d6663 | 1133 | |
17f88ceb DGM |
1134 | if (!ret) |
1135 | goto out; | |
1136 | ||
67207b96 AB |
1137 | if (copy_to_user(buf, &data, 4)) |
1138 | return -EFAULT; | |
1139 | ||
17f88ceb | 1140 | out: |
bf1ab978 DGM |
1141 | return ret; |
1142 | } | |
1143 | ||
1144 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1145 | size_t len, loff_t *pos) | |
1146 | { | |
1147 | struct spu_context *ctx = file->private_data; | |
1148 | int ret; | |
1149 | ||
c9101bdb CH |
1150 | ret = spu_acquire_saved(ctx); |
1151 | if (ret) | |
1152 | return ret; | |
bf1ab978 | 1153 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1154 | spu_release_saved(ctx); |
bf1ab978 DGM |
1155 | |
1156 | return ret; | |
67207b96 AB |
1157 | } |
1158 | ||
1159 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1160 | size_t len, loff_t *pos) | |
1161 | { | |
1162 | struct spu_context *ctx; | |
c9101bdb | 1163 | ssize_t ret; |
67207b96 AB |
1164 | u32 data; |
1165 | ||
1166 | ctx = file->private_data; | |
67207b96 AB |
1167 | |
1168 | if (len < 4) | |
1169 | return -EINVAL; | |
1170 | ||
1171 | if (copy_from_user(&data, buf, 4)) | |
1172 | return -EFAULT; | |
1173 | ||
c9101bdb CH |
1174 | ret = spu_acquire(ctx); |
1175 | if (ret) | |
1176 | return ret; | |
8b3d6663 AB |
1177 | ctx->ops->signal2_write(ctx, data); |
1178 | spu_release(ctx); | |
67207b96 AB |
1179 | |
1180 | return 4; | |
1181 | } | |
1182 | ||
27d5bf2a | 1183 | #if SPUFS_MMAP_4K |
e807f02c | 1184 | static vm_fault_t |
11bac800 | 1185 | spufs_signal2_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1186 | { |
87ff6090 | 1187 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1188 | return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1189 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1190 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1191 | * signal 1 and 2 area | |
1192 | */ | |
11bac800 | 1193 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1194 | #else |
1195 | #error unsupported page size | |
1196 | #endif | |
6df10a82 MN |
1197 | } |
1198 | ||
f0f37e2f | 1199 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1200 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1201 | }; |
1202 | ||
1203 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1204 | { | |
1205 | if (!(vma->vm_flags & VM_SHARED)) | |
1206 | return -EINVAL; | |
1207 | ||
78bde53e | 1208 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1209 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1210 | |
1211 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1212 | return 0; | |
1213 | } | |
27d5bf2a BH |
1214 | #else /* SPUFS_MMAP_4K */ |
1215 | #define spufs_signal2_mmap NULL | |
1216 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1217 | |
5dfe4c96 | 1218 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1219 | .open = spufs_signal2_open, |
43c2bbd9 | 1220 | .release = spufs_signal2_release, |
67207b96 AB |
1221 | .read = spufs_signal2_read, |
1222 | .write = spufs_signal2_write, | |
6df10a82 | 1223 | .mmap = spufs_signal2_mmap, |
fc15351d | 1224 | .llseek = no_llseek, |
67207b96 AB |
1225 | }; |
1226 | ||
d054b36f JK |
1227 | static const struct file_operations spufs_signal2_nosched_fops = { |
1228 | .open = spufs_signal2_open, | |
1229 | .release = spufs_signal2_release, | |
1230 | .write = spufs_signal2_write, | |
1231 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1232 | .llseek = no_llseek, |
d054b36f JK |
1233 | }; |
1234 | ||
104f0cc2 ME |
1235 | /* |
1236 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1237 | * work of acquiring (or not) the SPU context before calling through | |
1238 | * to the actual get routine. The set routine is called directly. | |
1239 | */ | |
1240 | #define SPU_ATTR_NOACQUIRE 0 | |
1241 | #define SPU_ATTR_ACQUIRE 1 | |
1242 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1243 | ||
1244 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1245 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1246 | { \ |
1247 | struct spu_context *ctx = data; \ | |
c9101bdb | 1248 | int ret = 0; \ |
104f0cc2 ME |
1249 | \ |
1250 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1251 | ret = spu_acquire(ctx); \ |
1252 | if (ret) \ | |
1253 | return ret; \ | |
197b1a82 | 1254 | *val = __get(ctx); \ |
104f0cc2 ME |
1255 | spu_release(ctx); \ |
1256 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1257 | ret = spu_acquire_saved(ctx); \ |
1258 | if (ret) \ | |
1259 | return ret; \ | |
197b1a82 | 1260 | *val = __get(ctx); \ |
104f0cc2 ME |
1261 | spu_release_saved(ctx); \ |
1262 | } else \ | |
197b1a82 | 1263 | *val = __get(ctx); \ |
104f0cc2 | 1264 | \ |
197b1a82 | 1265 | return 0; \ |
104f0cc2 | 1266 | } \ |
197b1a82 | 1267 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1268 | |
197b1a82 | 1269 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1270 | { |
1271 | struct spu_context *ctx = data; | |
c9101bdb | 1272 | int ret; |
67207b96 | 1273 | |
c9101bdb CH |
1274 | ret = spu_acquire(ctx); |
1275 | if (ret) | |
1276 | return ret; | |
8b3d6663 AB |
1277 | ctx->ops->signal1_type_set(ctx, val); |
1278 | spu_release(ctx); | |
197b1a82 CH |
1279 | |
1280 | return 0; | |
67207b96 AB |
1281 | } |
1282 | ||
104f0cc2 | 1283 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1284 | { |
bf1ab978 DGM |
1285 | return ctx->ops->signal1_type_get(ctx); |
1286 | } | |
104f0cc2 | 1287 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1288 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1289 | |
67207b96 | 1290 | |
197b1a82 | 1291 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1292 | { |
1293 | struct spu_context *ctx = data; | |
c9101bdb | 1294 | int ret; |
67207b96 | 1295 | |
c9101bdb CH |
1296 | ret = spu_acquire(ctx); |
1297 | if (ret) | |
1298 | return ret; | |
8b3d6663 AB |
1299 | ctx->ops->signal2_type_set(ctx, val); |
1300 | spu_release(ctx); | |
197b1a82 CH |
1301 | |
1302 | return 0; | |
67207b96 AB |
1303 | } |
1304 | ||
104f0cc2 | 1305 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1306 | { |
bf1ab978 DGM |
1307 | return ctx->ops->signal2_type_get(ctx); |
1308 | } | |
104f0cc2 | 1309 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1310 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1311 | |
27d5bf2a | 1312 | #if SPUFS_MMAP_4K |
e807f02c | 1313 | static vm_fault_t |
11bac800 | 1314 | spufs_mss_mmap_fault(struct vm_fault *vmf) |
d9379c4b | 1315 | { |
11bac800 | 1316 | return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b | 1317 | } |
1318 | ||
f0f37e2f | 1319 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1320 | .fault = spufs_mss_mmap_fault, |
d9379c4b | 1321 | }; |
1322 | ||
1323 | /* | |
1324 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b | 1325 | */ |
1326 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1327 | { | |
1328 | if (!(vma->vm_flags & VM_SHARED)) | |
1329 | return -EINVAL; | |
1330 | ||
78bde53e | 1331 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1332 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b | 1333 | |
1334 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1335 | return 0; | |
1336 | } | |
27d5bf2a BH |
1337 | #else /* SPUFS_MMAP_4K */ |
1338 | #define spufs_mss_mmap NULL | |
1339 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b | 1340 | |
1341 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1342 | { | |
1343 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1344 | struct spu_context *ctx = i->i_ctx; |
d9379c4b | 1345 | |
1346 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1347 | |
47d3a5fa | 1348 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1349 | if (!i->i_openers++) |
1350 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1351 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b | 1352 | return nonseekable_open(inode, file); |
1353 | } | |
1354 | ||
43c2bbd9 CH |
1355 | static int |
1356 | spufs_mss_release(struct inode *inode, struct file *file) | |
1357 | { | |
1358 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1359 | struct spu_context *ctx = i->i_ctx; | |
1360 | ||
47d3a5fa | 1361 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1362 | if (!--i->i_openers) |
1363 | ctx->mss = NULL; | |
47d3a5fa | 1364 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1365 | return 0; |
1366 | } | |
1367 | ||
5dfe4c96 | 1368 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1369 | .open = spufs_mss_open, |
43c2bbd9 | 1370 | .release = spufs_mss_release, |
d9379c4b | 1371 | .mmap = spufs_mss_mmap, |
fc15351d | 1372 | .llseek = no_llseek, |
27d5bf2a BH |
1373 | }; |
1374 | ||
e807f02c | 1375 | static vm_fault_t |
11bac800 | 1376 | spufs_psmap_mmap_fault(struct vm_fault *vmf) |
27d5bf2a | 1377 | { |
11bac800 | 1378 | return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1379 | } |
1380 | ||
f0f37e2f | 1381 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1382 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1383 | }; |
1384 | ||
1385 | /* | |
1386 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1387 | */ | |
1388 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1389 | { | |
1390 | if (!(vma->vm_flags & VM_SHARED)) | |
1391 | return -EINVAL; | |
1392 | ||
78bde53e | 1393 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1394 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1395 | |
1396 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1401 | { | |
1402 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1403 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1404 | |
47d3a5fa | 1405 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1406 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1407 | if (!i->i_openers++) |
1408 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1409 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1410 | return nonseekable_open(inode, file); |
1411 | } | |
1412 | ||
43c2bbd9 CH |
1413 | static int |
1414 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1415 | { | |
1416 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1417 | struct spu_context *ctx = i->i_ctx; | |
1418 | ||
47d3a5fa | 1419 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1420 | if (!--i->i_openers) |
1421 | ctx->psmap = NULL; | |
47d3a5fa | 1422 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1423 | return 0; |
1424 | } | |
1425 | ||
5dfe4c96 | 1426 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1427 | .open = spufs_psmap_open, |
43c2bbd9 | 1428 | .release = spufs_psmap_release, |
27d5bf2a | 1429 | .mmap = spufs_psmap_mmap, |
fc15351d | 1430 | .llseek = no_llseek, |
d9379c4b | 1431 | }; |
1432 | ||
1433 | ||
27d5bf2a | 1434 | #if SPUFS_MMAP_4K |
e807f02c | 1435 | static vm_fault_t |
11bac800 | 1436 | spufs_mfc_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1437 | { |
11bac800 | 1438 | return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1439 | } |
1440 | ||
f0f37e2f | 1441 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1442 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1443 | }; |
1444 | ||
1445 | /* | |
1446 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1447 | */ |
1448 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1449 | { | |
1450 | if (!(vma->vm_flags & VM_SHARED)) | |
1451 | return -EINVAL; | |
1452 | ||
78bde53e | 1453 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1454 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1455 | |
1456 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1457 | return 0; | |
1458 | } | |
27d5bf2a BH |
1459 | #else /* SPUFS_MMAP_4K */ |
1460 | #define spufs_mfc_mmap NULL | |
1461 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1462 | |
1463 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1464 | { | |
1465 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1466 | struct spu_context *ctx = i->i_ctx; | |
1467 | ||
1468 | /* we don't want to deal with DMA into other processes */ | |
1469 | if (ctx->owner != current->mm) | |
1470 | return -EINVAL; | |
1471 | ||
1472 | if (atomic_read(&inode->i_count) != 1) | |
1473 | return -EBUSY; | |
1474 | ||
47d3a5fa | 1475 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1476 | file->private_data = ctx; |
43c2bbd9 CH |
1477 | if (!i->i_openers++) |
1478 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1479 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1480 | return nonseekable_open(inode, file); |
1481 | } | |
1482 | ||
43c2bbd9 CH |
1483 | static int |
1484 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1485 | { | |
1486 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1487 | struct spu_context *ctx = i->i_ctx; | |
1488 | ||
47d3a5fa | 1489 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1490 | if (!--i->i_openers) |
1491 | ctx->mfc = NULL; | |
47d3a5fa | 1492 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1493 | return 0; |
1494 | } | |
1495 | ||
a33a7d73 AB |
1496 | /* interrupt-level mfc callback function. */ |
1497 | void spufs_mfc_callback(struct spu *spu) | |
1498 | { | |
1499 | struct spu_context *ctx = spu->ctx; | |
1500 | ||
7d7be3aa AV |
1501 | if (ctx) |
1502 | wake_up_all(&ctx->mfc_wq); | |
a33a7d73 AB |
1503 | } |
1504 | ||
1505 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1506 | { | |
1507 | /* See if there is one tag group is complete */ | |
1508 | /* FIXME we need locking around tagwait */ | |
1509 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1510 | ctx->tagwait &= ~*status; | |
1511 | if (*status) | |
1512 | return 1; | |
1513 | ||
1514 | /* enable interrupt waiting for any tag group, | |
1515 | may silently fail if interrupts are already enabled */ | |
1516 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1521 | size_t size, loff_t *pos) | |
1522 | { | |
1523 | struct spu_context *ctx = file->private_data; | |
1524 | int ret = -EINVAL; | |
1525 | u32 status; | |
1526 | ||
1527 | if (size != 4) | |
1528 | goto out; | |
1529 | ||
c9101bdb CH |
1530 | ret = spu_acquire(ctx); |
1531 | if (ret) | |
1532 | return ret; | |
1533 | ||
1534 | ret = -EINVAL; | |
a33a7d73 AB |
1535 | if (file->f_flags & O_NONBLOCK) { |
1536 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1537 | if (!(status & ctx->tagwait)) | |
1538 | ret = -EAGAIN; | |
1539 | else | |
c9101bdb | 1540 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1541 | ctx->tagwait &= ~status; |
1542 | } else { | |
1543 | ret = spufs_wait(ctx->mfc_wq, | |
1544 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1545 | if (ret) |
1546 | goto out; | |
a33a7d73 AB |
1547 | } |
1548 | spu_release(ctx); | |
1549 | ||
a33a7d73 AB |
1550 | ret = 4; |
1551 | if (copy_to_user(buffer, &status, 4)) | |
1552 | ret = -EFAULT; | |
1553 | ||
1554 | out: | |
1555 | return ret; | |
1556 | } | |
1557 | ||
1558 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1559 | { | |
9477e455 | 1560 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1561 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1562 | ||
1563 | switch (cmd->cmd) { | |
1564 | case MFC_PUT_CMD: | |
1565 | case MFC_PUTF_CMD: | |
1566 | case MFC_PUTB_CMD: | |
1567 | case MFC_GET_CMD: | |
1568 | case MFC_GETF_CMD: | |
1569 | case MFC_GETB_CMD: | |
1570 | break; | |
1571 | default: | |
1572 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1573 | return -EIO; | |
1574 | } | |
1575 | ||
1576 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1577 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1578 | cmd->ea, cmd->lsa); |
1579 | return -EIO; | |
1580 | } | |
1581 | ||
1582 | switch (cmd->size & 0xf) { | |
1583 | case 1: | |
1584 | break; | |
1585 | case 2: | |
1586 | if (cmd->lsa & 1) | |
1587 | goto error; | |
1588 | break; | |
1589 | case 4: | |
1590 | if (cmd->lsa & 3) | |
1591 | goto error; | |
1592 | break; | |
1593 | case 8: | |
1594 | if (cmd->lsa & 7) | |
1595 | goto error; | |
1596 | break; | |
1597 | case 0: | |
1598 | if (cmd->lsa & 15) | |
1599 | goto error; | |
1600 | break; | |
1601 | error: | |
1602 | default: | |
1603 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1604 | cmd->lsa & 0xf, cmd->size); | |
1605 | return -EIO; | |
1606 | } | |
1607 | ||
1608 | if (cmd->size > 16 * 1024) { | |
1609 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1610 | return -EIO; | |
1611 | } | |
1612 | ||
1613 | if (cmd->tag & 0xfff0) { | |
1614 | /* we reserve the higher tag numbers for kernel use */ | |
1615 | pr_debug("invalid DMA tag\n"); | |
1616 | return -EIO; | |
1617 | } | |
1618 | ||
1619 | if (cmd->class) { | |
1620 | /* not supported in this version */ | |
1621 | pr_debug("invalid DMA class\n"); | |
1622 | return -EIO; | |
1623 | } | |
1624 | ||
1625 | return 0; | |
1626 | } | |
1627 | ||
1628 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1629 | struct mfc_dma_command cmd, | |
1630 | int *error) | |
1631 | { | |
1632 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1633 | if (*error == -EAGAIN) { | |
1634 | /* wait for any tag group to complete | |
1635 | so we have space for the new command */ | |
1636 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1637 | /* try again, because the queue might be | |
1638 | empty again */ | |
1639 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1640 | if (*error == -EAGAIN) | |
1641 | return 0; | |
1642 | } | |
1643 | return 1; | |
1644 | } | |
1645 | ||
1646 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1647 | size_t size, loff_t *pos) | |
1648 | { | |
1649 | struct spu_context *ctx = file->private_data; | |
1650 | struct mfc_dma_command cmd; | |
1651 | int ret = -EINVAL; | |
1652 | ||
1653 | if (size != sizeof cmd) | |
1654 | goto out; | |
1655 | ||
1656 | ret = -EFAULT; | |
1657 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1658 | goto out; | |
1659 | ||
1660 | ret = spufs_check_valid_dma(&cmd); | |
1661 | if (ret) | |
1662 | goto out; | |
1663 | ||
c9101bdb CH |
1664 | ret = spu_acquire(ctx); |
1665 | if (ret) | |
1666 | goto out; | |
1667 | ||
33bfd7a7 | 1668 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1669 | if (ret) |
1670 | goto out; | |
1671 | ||
a33a7d73 AB |
1672 | if (file->f_flags & O_NONBLOCK) { |
1673 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1674 | } else { | |
1675 | int status; | |
1676 | ret = spufs_wait(ctx->mfc_wq, | |
1677 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1678 | if (ret) |
1679 | goto out; | |
a33a7d73 AB |
1680 | if (status) |
1681 | ret = status; | |
1682 | } | |
a33a7d73 AB |
1683 | |
1684 | if (ret) | |
933b0e35 | 1685 | goto out_unlock; |
a33a7d73 AB |
1686 | |
1687 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1688 | ret = size; |
a33a7d73 | 1689 | |
933b0e35 KA |
1690 | out_unlock: |
1691 | spu_release(ctx); | |
a33a7d73 AB |
1692 | out: |
1693 | return ret; | |
1694 | } | |
1695 | ||
8153a5ea | 1696 | static __poll_t spufs_mfc_poll(struct file *file,poll_table *wait) |
a33a7d73 AB |
1697 | { |
1698 | struct spu_context *ctx = file->private_data; | |
1699 | u32 free_elements, tagstatus; | |
8153a5ea | 1700 | __poll_t mask; |
a33a7d73 | 1701 | |
933b0e35 KA |
1702 | poll_wait(file, &ctx->mfc_wq, wait); |
1703 | ||
c9101bdb CH |
1704 | /* |
1705 | * For now keep this uninterruptible and also ignore the rule | |
1706 | * that poll should not sleep. Will be fixed later. | |
1707 | */ | |
1708 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1709 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1710 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1711 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1712 | spu_release(ctx); | |
1713 | ||
a33a7d73 AB |
1714 | mask = 0; |
1715 | if (free_elements & 0xffff) | |
a9a08845 | 1716 | mask |= EPOLLOUT | EPOLLWRNORM; |
a33a7d73 | 1717 | if (tagstatus & ctx->tagwait) |
a9a08845 | 1718 | mask |= EPOLLIN | EPOLLRDNORM; |
a33a7d73 | 1719 | |
e48b1b45 | 1720 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1721 | free_elements, tagstatus, ctx->tagwait); |
1722 | ||
1723 | return mask; | |
1724 | } | |
1725 | ||
73b6af8a | 1726 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1727 | { |
1728 | struct spu_context *ctx = file->private_data; | |
1729 | int ret; | |
1730 | ||
c9101bdb CH |
1731 | ret = spu_acquire(ctx); |
1732 | if (ret) | |
eebead5b | 1733 | goto out; |
a33a7d73 AB |
1734 | #if 0 |
1735 | /* this currently hangs */ | |
1736 | ret = spufs_wait(ctx->mfc_wq, | |
1737 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1738 | if (ret) | |
1739 | goto out; | |
1740 | ret = spufs_wait(ctx->mfc_wq, | |
1741 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1742 | if (ret) |
1743 | goto out; | |
a33a7d73 AB |
1744 | #else |
1745 | ret = 0; | |
1746 | #endif | |
1747 | spu_release(ctx); | |
eebead5b | 1748 | out: |
a33a7d73 AB |
1749 | return ret; |
1750 | } | |
1751 | ||
02c24a82 JB |
1752 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1753 | { | |
496ad9aa | 1754 | struct inode *inode = file_inode(file); |
3b49c9a1 | 1755 | int err = file_write_and_wait_range(file, start, end); |
02c24a82 | 1756 | if (!err) { |
5955102c | 1757 | inode_lock(inode); |
02c24a82 | 1758 | err = spufs_mfc_flush(file, NULL); |
5955102c | 1759 | inode_unlock(inode); |
02c24a82 JB |
1760 | } |
1761 | return err; | |
a33a7d73 AB |
1762 | } |
1763 | ||
5dfe4c96 | 1764 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1765 | .open = spufs_mfc_open, |
43c2bbd9 | 1766 | .release = spufs_mfc_release, |
a33a7d73 AB |
1767 | .read = spufs_mfc_read, |
1768 | .write = spufs_mfc_write, | |
1769 | .poll = spufs_mfc_poll, | |
1770 | .flush = spufs_mfc_flush, | |
1771 | .fsync = spufs_mfc_fsync, | |
6df10a82 | 1772 | .mmap = spufs_mfc_mmap, |
fc15351d | 1773 | .llseek = no_llseek, |
a33a7d73 AB |
1774 | }; |
1775 | ||
197b1a82 | 1776 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1777 | { |
1778 | struct spu_context *ctx = data; | |
c9101bdb CH |
1779 | int ret; |
1780 | ||
1781 | ret = spu_acquire(ctx); | |
1782 | if (ret) | |
1783 | return ret; | |
8b3d6663 AB |
1784 | ctx->ops->npc_write(ctx, val); |
1785 | spu_release(ctx); | |
197b1a82 CH |
1786 | |
1787 | return 0; | |
67207b96 AB |
1788 | } |
1789 | ||
104f0cc2 | 1790 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1791 | { |
1792 | return ctx->ops->npc_read(ctx); | |
1793 | } | |
104f0cc2 ME |
1794 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1795 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1796 | |
197b1a82 | 1797 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1798 | { |
1799 | struct spu_context *ctx = data; | |
1800 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1801 | int ret; |
1802 | ||
1803 | ret = spu_acquire_saved(ctx); | |
1804 | if (ret) | |
1805 | return ret; | |
8b3d6663 | 1806 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1807 | spu_release_saved(ctx); |
197b1a82 CH |
1808 | |
1809 | return 0; | |
8b3d6663 AB |
1810 | } |
1811 | ||
104f0cc2 | 1812 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1813 | { |
8b3d6663 | 1814 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1815 | return lscsa->decr.slot[0]; |
1816 | } | |
104f0cc2 ME |
1817 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1818 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1819 | |
197b1a82 | 1820 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1821 | { |
1822 | struct spu_context *ctx = data; | |
c9101bdb CH |
1823 | int ret; |
1824 | ||
1825 | ret = spu_acquire_saved(ctx); | |
1826 | if (ret) | |
1827 | return ret; | |
d40a01d4 MN |
1828 | if (val) |
1829 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1830 | else | |
1831 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1832 | spu_release_saved(ctx); |
197b1a82 CH |
1833 | |
1834 | return 0; | |
8b3d6663 AB |
1835 | } |
1836 | ||
104f0cc2 | 1837 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1838 | { |
d40a01d4 MN |
1839 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1840 | return SPU_DECR_STATUS_RUNNING; | |
1841 | else | |
1842 | return 0; | |
bf1ab978 | 1843 | } |
104f0cc2 ME |
1844 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1845 | spufs_decr_status_set, "0x%llx\n", | |
1846 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1847 | |
197b1a82 | 1848 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1849 | { |
1850 | struct spu_context *ctx = data; | |
1851 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1852 | int ret; |
1853 | ||
1854 | ret = spu_acquire_saved(ctx); | |
1855 | if (ret) | |
1856 | return ret; | |
8b3d6663 | 1857 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1858 | spu_release_saved(ctx); |
197b1a82 CH |
1859 | |
1860 | return 0; | |
8b3d6663 AB |
1861 | } |
1862 | ||
104f0cc2 | 1863 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1864 | { |
8b3d6663 | 1865 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1866 | return lscsa->event_mask.slot[0]; |
1867 | } | |
1868 | ||
104f0cc2 ME |
1869 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1870 | spufs_event_mask_set, "0x%llx\n", | |
1871 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1872 | |
104f0cc2 | 1873 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1874 | { |
b9e3bd77 | 1875 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1876 | u64 stat; |
b9e3bd77 DGM |
1877 | stat = state->spu_chnlcnt_RW[0]; |
1878 | if (stat) | |
bf1ab978 DGM |
1879 | return state->spu_chnldata_RW[0]; |
1880 | return 0; | |
1881 | } | |
104f0cc2 ME |
1882 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1883 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1884 | |
197b1a82 | 1885 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1886 | { |
1887 | struct spu_context *ctx = data; | |
1888 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1889 | int ret; |
1890 | ||
1891 | ret = spu_acquire_saved(ctx); | |
1892 | if (ret) | |
1893 | return ret; | |
8b3d6663 | 1894 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1895 | spu_release_saved(ctx); |
197b1a82 CH |
1896 | |
1897 | return 0; | |
8b3d6663 AB |
1898 | } |
1899 | ||
104f0cc2 | 1900 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1901 | { |
8b3d6663 | 1902 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1903 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1904 | } |
104f0cc2 ME |
1905 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1906 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1907 | |
104f0cc2 | 1908 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1909 | { |
7b1a7014 | 1910 | u64 num; |
1911 | ||
7b1a7014 | 1912 | if (ctx->state == SPU_STATE_RUNNABLE) |
1913 | num = ctx->spu->number; | |
1914 | else | |
1915 | num = (unsigned int)-1; | |
7b1a7014 | 1916 | |
1917 | return num; | |
1918 | } | |
104f0cc2 ME |
1919 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1920 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1921 | |
104f0cc2 | 1922 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1923 | { |
1924 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1925 | return ctx->object_id; |
bf1ab978 DGM |
1926 | } |
1927 | ||
197b1a82 | 1928 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
1929 | { |
1930 | struct spu_context *ctx = data; | |
1931 | ctx->object_id = id; | |
197b1a82 CH |
1932 | |
1933 | return 0; | |
86767277 AB |
1934 | } |
1935 | ||
104f0cc2 ME |
1936 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1937 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1938 | |
104f0cc2 | 1939 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1940 | { |
bf1ab978 DGM |
1941 | return ctx->csa.priv2.spu_lslr_RW; |
1942 | } | |
104f0cc2 ME |
1943 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1944 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1945 | |
1946 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1947 | { | |
1948 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1949 | struct spu_context *ctx = i->i_ctx; | |
1950 | file->private_data = ctx; | |
1951 | return 0; | |
1952 | } | |
1953 | ||
cbe709c1 BH |
1954 | static int spufs_caps_show(struct seq_file *s, void *private) |
1955 | { | |
1956 | struct spu_context *ctx = s->private; | |
1957 | ||
1958 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
1959 | seq_puts(s, "sched\n"); | |
1960 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
1961 | seq_puts(s, "step\n"); | |
1962 | return 0; | |
1963 | } | |
1964 | ||
1965 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
1966 | { | |
1967 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
1968 | } | |
1969 | ||
1970 | static const struct file_operations spufs_caps_fops = { | |
1971 | .open = spufs_caps_open, | |
1972 | .read = seq_read, | |
1973 | .llseek = seq_lseek, | |
1974 | .release = single_release, | |
1975 | }; | |
1976 | ||
bf1ab978 DGM |
1977 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
1978 | char __user *buf, size_t len, loff_t *pos) | |
1979 | { | |
bf1ab978 DGM |
1980 | u32 data; |
1981 | ||
cbea9238 JK |
1982 | /* EOF if there's no entry in the mbox */ |
1983 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
1984 | return 0; | |
1985 | ||
1986 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
1987 | |
1988 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1989 | } | |
1990 | ||
69a2f00c DGM |
1991 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1992 | size_t len, loff_t *pos) | |
1993 | { | |
bf1ab978 | 1994 | int ret; |
69a2f00c | 1995 | struct spu_context *ctx = file->private_data; |
69a2f00c | 1996 | |
96d4f267 | 1997 | if (!access_ok(buf, len)) |
69a2f00c DGM |
1998 | return -EFAULT; |
1999 | ||
c9101bdb CH |
2000 | ret = spu_acquire_saved(ctx); |
2001 | if (ret) | |
2002 | return ret; | |
69a2f00c | 2003 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2004 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2005 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2006 | spu_release_saved(ctx); |
69a2f00c | 2007 | |
bf1ab978 | 2008 | return ret; |
69a2f00c DGM |
2009 | } |
2010 | ||
5dfe4c96 | 2011 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2012 | .open = spufs_info_open, |
2013 | .read = spufs_mbox_info_read, | |
2014 | .llseek = generic_file_llseek, | |
2015 | }; | |
2016 | ||
bf1ab978 DGM |
2017 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2018 | char __user *buf, size_t len, loff_t *pos) | |
2019 | { | |
bf1ab978 DGM |
2020 | u32 data; |
2021 | ||
cbea9238 JK |
2022 | /* EOF if there's no entry in the ibox */ |
2023 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2024 | return 0; | |
2025 | ||
2026 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2027 | |
2028 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2029 | } | |
2030 | ||
69a2f00c DGM |
2031 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2032 | size_t len, loff_t *pos) | |
2033 | { | |
2034 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2035 | int ret; |
69a2f00c | 2036 | |
96d4f267 | 2037 | if (!access_ok(buf, len)) |
69a2f00c DGM |
2038 | return -EFAULT; |
2039 | ||
c9101bdb CH |
2040 | ret = spu_acquire_saved(ctx); |
2041 | if (ret) | |
2042 | return ret; | |
69a2f00c | 2043 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2044 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2045 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2046 | spu_release_saved(ctx); |
69a2f00c | 2047 | |
bf1ab978 | 2048 | return ret; |
69a2f00c DGM |
2049 | } |
2050 | ||
5dfe4c96 | 2051 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2052 | .open = spufs_info_open, |
2053 | .read = spufs_ibox_info_read, | |
2054 | .llseek = generic_file_llseek, | |
2055 | }; | |
2056 | ||
bf1ab978 DGM |
2057 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2058 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2059 | { |
69a2f00c DGM |
2060 | int i, cnt; |
2061 | u32 data[4]; | |
2062 | u32 wbox_stat; | |
2063 | ||
bf1ab978 DGM |
2064 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2065 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2066 | for (i = 0; i < cnt; i++) { | |
2067 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2068 | } | |
2069 | ||
2070 | return simple_read_from_buffer(buf, len, pos, &data, | |
2071 | cnt * sizeof(u32)); | |
2072 | } | |
2073 | ||
2074 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2075 | size_t len, loff_t *pos) | |
2076 | { | |
2077 | struct spu_context *ctx = file->private_data; | |
2078 | int ret; | |
2079 | ||
96d4f267 | 2080 | if (!access_ok(buf, len)) |
69a2f00c DGM |
2081 | return -EFAULT; |
2082 | ||
c9101bdb CH |
2083 | ret = spu_acquire_saved(ctx); |
2084 | if (ret) | |
2085 | return ret; | |
69a2f00c | 2086 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2087 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2088 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2089 | spu_release_saved(ctx); |
69a2f00c | 2090 | |
bf1ab978 | 2091 | return ret; |
69a2f00c DGM |
2092 | } |
2093 | ||
5dfe4c96 | 2094 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2095 | .open = spufs_info_open, |
2096 | .read = spufs_wbox_info_read, | |
2097 | .llseek = generic_file_llseek, | |
2098 | }; | |
2099 | ||
bf1ab978 DGM |
2100 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2101 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2102 | { |
b9e3bd77 DGM |
2103 | struct spu_dma_info info; |
2104 | struct mfc_cq_sr *qp, *spuqp; | |
2105 | int i; | |
2106 | ||
b9e3bd77 DGM |
2107 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2108 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2109 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2110 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2111 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2112 | for (i = 0; i < 16; i++) { | |
2113 | qp = &info.dma_info_command_data[i]; | |
2114 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2115 | ||
2116 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2117 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2118 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2119 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2120 | } | |
b9e3bd77 DGM |
2121 | |
2122 | return simple_read_from_buffer(buf, len, pos, &info, | |
2123 | sizeof info); | |
2124 | } | |
2125 | ||
bf1ab978 DGM |
2126 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2127 | size_t len, loff_t *pos) | |
2128 | { | |
2129 | struct spu_context *ctx = file->private_data; | |
2130 | int ret; | |
2131 | ||
96d4f267 | 2132 | if (!access_ok(buf, len)) |
bf1ab978 DGM |
2133 | return -EFAULT; |
2134 | ||
c9101bdb CH |
2135 | ret = spu_acquire_saved(ctx); |
2136 | if (ret) | |
2137 | return ret; | |
bf1ab978 DGM |
2138 | spin_lock(&ctx->csa.register_lock); |
2139 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2140 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2141 | spu_release_saved(ctx); |
bf1ab978 DGM |
2142 | |
2143 | return ret; | |
2144 | } | |
2145 | ||
5dfe4c96 | 2146 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2147 | .open = spufs_info_open, |
2148 | .read = spufs_dma_info_read, | |
fc15351d | 2149 | .llseek = no_llseek, |
b9e3bd77 DGM |
2150 | }; |
2151 | ||
bf1ab978 DGM |
2152 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2153 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2154 | { |
b9e3bd77 | 2155 | struct spu_proxydma_info info; |
b9e3bd77 | 2156 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2157 | int ret = sizeof info; |
b9e3bd77 DGM |
2158 | int i; |
2159 | ||
2160 | if (len < ret) | |
2161 | return -EINVAL; | |
2162 | ||
96d4f267 | 2163 | if (!access_ok(buf, len)) |
b9e3bd77 DGM |
2164 | return -EFAULT; |
2165 | ||
b9e3bd77 DGM |
2166 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2167 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2168 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2169 | for (i = 0; i < 8; i++) { | |
2170 | qp = &info.proxydma_info_command_data[i]; | |
2171 | puqp = &ctx->csa.priv2.puq[i]; | |
2172 | ||
2173 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2174 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2175 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2176 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2177 | } | |
bf1ab978 DGM |
2178 | |
2179 | return simple_read_from_buffer(buf, len, pos, &info, | |
2180 | sizeof info); | |
2181 | } | |
2182 | ||
2183 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2184 | size_t len, loff_t *pos) | |
2185 | { | |
2186 | struct spu_context *ctx = file->private_data; | |
2187 | int ret; | |
2188 | ||
c9101bdb CH |
2189 | ret = spu_acquire_saved(ctx); |
2190 | if (ret) | |
2191 | return ret; | |
bf1ab978 DGM |
2192 | spin_lock(&ctx->csa.register_lock); |
2193 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2194 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2195 | spu_release_saved(ctx); |
b9e3bd77 | 2196 | |
b9e3bd77 DGM |
2197 | return ret; |
2198 | } | |
2199 | ||
5dfe4c96 | 2200 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2201 | .open = spufs_info_open, |
2202 | .read = spufs_proxydma_info_read, | |
fc15351d | 2203 | .llseek = no_llseek, |
b9e3bd77 DGM |
2204 | }; |
2205 | ||
476273ad CH |
2206 | static int spufs_show_tid(struct seq_file *s, void *private) |
2207 | { | |
2208 | struct spu_context *ctx = s->private; | |
2209 | ||
2210 | seq_printf(s, "%d\n", ctx->tid); | |
2211 | return 0; | |
2212 | } | |
2213 | ||
2214 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2215 | { | |
2216 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2217 | } | |
2218 | ||
2219 | static const struct file_operations spufs_tid_fops = { | |
2220 | .open = spufs_tid_open, | |
2221 | .read = seq_read, | |
2222 | .llseek = seq_lseek, | |
2223 | .release = single_release, | |
2224 | }; | |
2225 | ||
e9f8a0b6 CH |
2226 | static const char *ctx_state_names[] = { |
2227 | "user", "system", "iowait", "loaded" | |
2228 | }; | |
2229 | ||
2230 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2231 | enum spu_utilization_state state) |
e9f8a0b6 | 2232 | { |
27ec41d3 | 2233 | unsigned long long time = ctx->stats.times[state]; |
e9f8a0b6 | 2234 | |
27ec41d3 AD |
2235 | /* |
2236 | * In general, utilization statistics are updated by the controlling | |
2237 | * thread as the spu context moves through various well defined | |
2238 | * state transitions, but if the context is lazily loaded its | |
2239 | * utilization statistics are not updated as the controlling thread | |
2240 | * is not tightly coupled with the execution of the spu context. We | |
2241 | * calculate and apply the time delta from the last recorded state | |
2242 | * of the spu context. | |
2243 | */ | |
2244 | if (ctx->spu && ctx->stats.util_state == state) { | |
f2dec1ea | 2245 | time += ktime_get_ns() - ctx->stats.tstamp; |
27ec41d3 | 2246 | } |
e9f8a0b6 | 2247 | |
27ec41d3 | 2248 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2249 | } |
2250 | ||
2251 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2252 | { | |
2253 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2254 | ||
2255 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2256 | slb_flts += (ctx->spu->stats.slb_flt - | |
2257 | ctx->stats.slb_flt_base); | |
2258 | } | |
2259 | ||
2260 | return slb_flts; | |
2261 | } | |
2262 | ||
2263 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2264 | { | |
2265 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2266 | ||
2267 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2268 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2269 | ctx->stats.class2_intr_base); | |
2270 | } | |
2271 | ||
2272 | return class2_intrs; | |
2273 | } | |
2274 | ||
2275 | ||
2276 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2277 | { | |
2278 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2279 | int ret; |
2280 | ||
2281 | ret = spu_acquire(ctx); | |
2282 | if (ret) | |
2283 | return ret; | |
e9f8a0b6 | 2284 | |
e9f8a0b6 CH |
2285 | seq_printf(s, "%s %llu %llu %llu %llu " |
2286 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2287 | ctx_state_names[ctx->stats.util_state], |
2288 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2289 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2290 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2291 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2292 | ctx->stats.vol_ctx_switch, |
2293 | ctx->stats.invol_ctx_switch, | |
2294 | spufs_slb_flts(ctx), | |
2295 | ctx->stats.hash_flt, | |
2296 | ctx->stats.min_flt, | |
2297 | ctx->stats.maj_flt, | |
2298 | spufs_class2_intrs(ctx), | |
2299 | ctx->stats.libassist); | |
2300 | spu_release(ctx); | |
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2305 | { | |
2306 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2307 | } | |
2308 | ||
2309 | static const struct file_operations spufs_stat_fops = { | |
2310 | .open = spufs_stat_open, | |
2311 | .read = seq_read, | |
2312 | .llseek = seq_lseek, | |
2313 | .release = single_release, | |
2314 | }; | |
2315 | ||
5158e9b5 CH |
2316 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2317 | { | |
2318 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2319 | SWITCH_LOG_BUFSIZE; | |
2320 | } | |
2321 | ||
2322 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2323 | { | |
2324 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2325 | } | |
2326 | ||
2327 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2328 | { | |
2329 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2330 | int rc; |
2331 | ||
2332 | rc = spu_acquire(ctx); | |
2333 | if (rc) | |
2334 | return rc; | |
5158e9b5 | 2335 | |
5158e9b5 | 2336 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2337 | rc = -EBUSY; |
2338 | goto out; | |
5158e9b5 | 2339 | } |
f5ed0eb6 | 2340 | |
00def713 GS |
2341 | ctx->switch_log = kmalloc(struct_size(ctx->switch_log, log, |
2342 | SWITCH_LOG_BUFSIZE), GFP_KERNEL); | |
f5ed0eb6 JK |
2343 | |
2344 | if (!ctx->switch_log) { | |
2345 | rc = -ENOMEM; | |
2346 | goto out; | |
2347 | } | |
2348 | ||
837ef884 | 2349 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2350 | init_waitqueue_head(&ctx->switch_log->wait); |
2351 | rc = 0; | |
2352 | ||
2353 | out: | |
2354 | spu_release(ctx); | |
2355 | return rc; | |
2356 | } | |
2357 | ||
2358 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2359 | { | |
2360 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2361 | int rc; | |
2362 | ||
2363 | rc = spu_acquire(ctx); | |
2364 | if (rc) | |
2365 | return rc; | |
2366 | ||
2367 | kfree(ctx->switch_log); | |
2368 | ctx->switch_log = NULL; | |
2369 | spu_release(ctx); | |
5158e9b5 CH |
2370 | |
2371 | return 0; | |
5158e9b5 CH |
2372 | } |
2373 | ||
2374 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2375 | { | |
2376 | struct switch_log_entry *p; | |
2377 | ||
2378 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2379 | ||
cef37ac1 AB |
2380 | return snprintf(tbuf, n, "%llu.%09u %d %u %u %llu\n", |
2381 | (unsigned long long) p->tstamp.tv_sec, | |
5158e9b5 CH |
2382 | (unsigned int) p->tstamp.tv_nsec, |
2383 | p->spu_id, | |
2384 | (unsigned int) p->type, | |
2385 | (unsigned int) p->val, | |
2386 | (unsigned long long) p->timebase); | |
2387 | } | |
2388 | ||
2389 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2390 | size_t len, loff_t *ppos) | |
2391 | { | |
496ad9aa | 2392 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2393 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2394 | int error = 0, cnt = 0; | |
2395 | ||
17e37675 | 2396 | if (!buf) |
5158e9b5 CH |
2397 | return -EINVAL; |
2398 | ||
f5ed0eb6 JK |
2399 | error = spu_acquire(ctx); |
2400 | if (error) | |
2401 | return error; | |
2402 | ||
5158e9b5 CH |
2403 | while (cnt < len) { |
2404 | char tbuf[128]; | |
2405 | int width; | |
2406 | ||
14f693ee JK |
2407 | if (spufs_switch_log_used(ctx) == 0) { |
2408 | if (cnt > 0) { | |
2409 | /* If there's data ready to go, we can | |
2410 | * just return straight away */ | |
2411 | break; | |
2412 | ||
2413 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2414 | error = -EAGAIN; |
2415 | break; | |
14f693ee JK |
2416 | |
2417 | } else { | |
2418 | /* spufs_wait will drop the mutex and | |
2419 | * re-acquire, but since we're in read(), the | |
2420 | * file cannot be _released (and so | |
2421 | * ctx->switch_log is stable). | |
2422 | */ | |
2423 | error = spufs_wait(ctx->switch_log->wait, | |
2424 | spufs_switch_log_used(ctx) > 0); | |
2425 | ||
2426 | /* On error, spufs_wait returns without the | |
2427 | * state mutex held */ | |
2428 | if (error) | |
2429 | return error; | |
2430 | ||
2431 | /* We may have had entries read from underneath | |
2432 | * us while we dropped the mutex in spufs_wait, | |
2433 | * so re-check */ | |
2434 | if (spufs_switch_log_used(ctx) == 0) | |
2435 | continue; | |
f5ed0eb6 | 2436 | } |
5158e9b5 CH |
2437 | } |
2438 | ||
5158e9b5 | 2439 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2440 | if (width < len) |
5158e9b5 CH |
2441 | ctx->switch_log->tail = |
2442 | (ctx->switch_log->tail + 1) % | |
2443 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2444 | else |
2445 | /* If the record is greater than space available return | |
2446 | * partial buffer (so far) */ | |
5158e9b5 CH |
2447 | break; |
2448 | ||
2449 | error = copy_to_user(buf + cnt, tbuf, width); | |
2450 | if (error) | |
2451 | break; | |
2452 | cnt += width; | |
2453 | } | |
2454 | ||
f5ed0eb6 JK |
2455 | spu_release(ctx); |
2456 | ||
5158e9b5 CH |
2457 | return cnt == 0 ? error : cnt; |
2458 | } | |
2459 | ||
8153a5ea | 2460 | static __poll_t spufs_switch_log_poll(struct file *file, poll_table *wait) |
5158e9b5 | 2461 | { |
496ad9aa | 2462 | struct inode *inode = file_inode(file); |
5158e9b5 | 2463 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
8153a5ea | 2464 | __poll_t mask = 0; |
f5ed0eb6 | 2465 | int rc; |
5158e9b5 CH |
2466 | |
2467 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2468 | ||
f5ed0eb6 JK |
2469 | rc = spu_acquire(ctx); |
2470 | if (rc) | |
2471 | return rc; | |
2472 | ||
5158e9b5 | 2473 | if (spufs_switch_log_used(ctx) > 0) |
a9a08845 | 2474 | mask |= EPOLLIN; |
5158e9b5 | 2475 | |
f5ed0eb6 JK |
2476 | spu_release(ctx); |
2477 | ||
5158e9b5 CH |
2478 | return mask; |
2479 | } | |
2480 | ||
2481 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2482 | .open = spufs_switch_log_open, |
2483 | .read = spufs_switch_log_read, | |
2484 | .poll = spufs_switch_log_poll, | |
2485 | .release = spufs_switch_log_release, | |
fc15351d | 2486 | .llseek = no_llseek, |
5158e9b5 CH |
2487 | }; |
2488 | ||
f5ed0eb6 JK |
2489 | /** |
2490 | * Log a context switch event to a switch log reader. | |
2491 | * | |
2492 | * Must be called with ctx->state_mutex held. | |
2493 | */ | |
5158e9b5 CH |
2494 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2495 | u32 type, u32 val) | |
2496 | { | |
2497 | if (!ctx->switch_log) | |
2498 | return; | |
2499 | ||
5158e9b5 CH |
2500 | if (spufs_switch_log_avail(ctx) > 1) { |
2501 | struct switch_log_entry *p; | |
2502 | ||
2503 | p = ctx->switch_log->log + ctx->switch_log->head; | |
cef37ac1 | 2504 | ktime_get_ts64(&p->tstamp); |
5158e9b5 CH |
2505 | p->timebase = get_tb(); |
2506 | p->spu_id = spu ? spu->number : -1; | |
2507 | p->type = type; | |
2508 | p->val = val; | |
2509 | ||
2510 | ctx->switch_log->head = | |
2511 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2512 | } | |
5158e9b5 CH |
2513 | |
2514 | wake_up(&ctx->switch_log->wait); | |
2515 | } | |
e9f8a0b6 | 2516 | |
46deed69 LB |
2517 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2518 | { | |
2519 | struct spu_context *ctx = s->private; | |
2520 | u64 mfc_control_RW; | |
2521 | ||
2522 | mutex_lock(&ctx->state_mutex); | |
2523 | if (ctx->spu) { | |
2524 | struct spu *spu = ctx->spu; | |
2525 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2526 | ||
2527 | spin_lock_irq(&spu->register_lock); | |
2528 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2529 | spin_unlock_irq(&spu->register_lock); | |
2530 | } else { | |
2531 | struct spu_state *csa = &ctx->csa; | |
2532 | ||
2533 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2534 | } | |
2535 | ||
2536 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2537 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2538 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2539 | ctx->flags, | |
2540 | ctx->sched_flags, | |
2541 | ctx->prio, | |
2542 | ctx->time_slice, | |
2543 | ctx->spu ? ctx->spu->number : -1, | |
2544 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2545 | ctx->csa.class_0_pending, | |
2546 | ctx->csa.class_0_dar, | |
2547 | ctx->csa.class_1_dsisr, | |
2548 | mfc_control_RW, | |
2549 | ctx->ops->runcntl_read(ctx), | |
2550 | ctx->ops->status_read(ctx)); | |
2551 | ||
2552 | mutex_unlock(&ctx->state_mutex); | |
2553 | ||
2554 | return 0; | |
2555 | } | |
2556 | ||
2557 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2558 | { | |
2559 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2560 | } | |
2561 | ||
2562 | static const struct file_operations spufs_ctx_fops = { | |
2563 | .open = spufs_ctx_open, | |
2564 | .read = seq_read, | |
2565 | .llseek = seq_lseek, | |
2566 | .release = single_release, | |
2567 | }; | |
2568 | ||
74254647 | 2569 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2570 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2571 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2572 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2573 | { "mbox", &spufs_mbox_fops, 0444, }, |
2574 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2575 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2576 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2577 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2578 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2579 | { "signal1", &spufs_signal1_fops, 0666, }, |
2580 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2581 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2582 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2583 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2584 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2585 | { "lslr", &spufs_lslr_ops, 0444, }, |
2586 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2587 | { "mss", &spufs_mss_fops, 0666, }, | |
2588 | { "npc", &spufs_npc_ops, 0666, }, | |
2589 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2590 | { "decr", &spufs_decr_ops, 0666, }, |
2591 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2592 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2593 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2594 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2595 | { "phys-id", &spufs_id_ops, 0666, }, |
2596 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2597 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2598 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2599 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2600 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2601 | sizeof(struct spu_dma_info), }, | |
2602 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2603 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2604 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2605 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2606 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2607 | {}, |
2608 | }; | |
5737edd1 | 2609 | |
74254647 | 2610 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2611 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2612 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2613 | { "mbox", &spufs_mbox_fops, 0444, }, |
2614 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2615 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2616 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2617 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2618 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2619 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2620 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2621 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2622 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2623 | { "mss", &spufs_mss_fops, 0666, }, | |
2624 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2625 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2626 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2627 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2628 | { "phys-id", &spufs_id_ops, 0666, }, |
2629 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2630 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2631 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2632 | {}, |
2633 | }; | |
2634 | ||
74254647 | 2635 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2636 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2637 | {}, |
2638 | }; | |
bf1ab978 | 2639 | |
74254647 | 2640 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2641 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2642 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2643 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2644 | { "decr", NULL, spufs_decr_get, 19 }, | |
2645 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2646 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2647 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2648 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2649 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2650 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2651 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2652 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2653 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2654 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2655 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2656 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2657 | { "proxydma_info", __spufs_proxydma_info_read, | |
2658 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2659 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2660 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2661 | { NULL }, |
bf1ab978 | 2662 | }; |