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67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
27 | #include <linux/module.h> | |
d88cfffa | 28 | #include <linux/pagemap.h> |
67207b96 | 29 | #include <linux/poll.h> |
5110459f | 30 | #include <linux/ptrace.h> |
cbe709c1 | 31 | #include <linux/seq_file.h> |
038200cf | 32 | #include <linux/marker.h> |
67207b96 AB |
33 | |
34 | #include <asm/io.h> | |
dfe1e09f | 35 | #include <asm/time.h> |
67207b96 | 36 | #include <asm/spu.h> |
b9e3bd77 | 37 | #include <asm/spu_info.h> |
67207b96 AB |
38 | #include <asm/uaccess.h> |
39 | ||
40 | #include "spufs.h" | |
41 | ||
27d5bf2a BH |
42 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
43 | ||
197b1a82 CH |
44 | /* Simple attribute files */ |
45 | struct spufs_attr { | |
46 | int (*get)(void *, u64 *); | |
47 | int (*set)(void *, u64); | |
48 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
49 | char set_buf[24]; | |
50 | void *data; | |
51 | const char *fmt; /* format for read operation */ | |
52 | struct mutex mutex; /* protects access to these buffers */ | |
53 | }; | |
54 | ||
55 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
56 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
57 | const char *fmt) | |
58 | { | |
59 | struct spufs_attr *attr; | |
60 | ||
61 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
62 | if (!attr) | |
63 | return -ENOMEM; | |
64 | ||
65 | attr->get = get; | |
66 | attr->set = set; | |
67 | attr->data = inode->i_private; | |
68 | attr->fmt = fmt; | |
69 | mutex_init(&attr->mutex); | |
70 | file->private_data = attr; | |
71 | ||
72 | return nonseekable_open(inode, file); | |
73 | } | |
74 | ||
75 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
76 | { | |
77 | kfree(file->private_data); | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
82 | size_t len, loff_t *ppos) | |
83 | { | |
84 | struct spufs_attr *attr; | |
85 | size_t size; | |
86 | ssize_t ret; | |
87 | ||
88 | attr = file->private_data; | |
89 | if (!attr->get) | |
90 | return -EACCES; | |
91 | ||
92 | ret = mutex_lock_interruptible(&attr->mutex); | |
93 | if (ret) | |
94 | return ret; | |
95 | ||
96 | if (*ppos) { /* continued read */ | |
97 | size = strlen(attr->get_buf); | |
98 | } else { /* first read */ | |
99 | u64 val; | |
100 | ret = attr->get(attr->data, &val); | |
101 | if (ret) | |
102 | goto out; | |
103 | ||
104 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
105 | attr->fmt, (unsigned long long)val); | |
106 | } | |
107 | ||
108 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
109 | out: | |
110 | mutex_unlock(&attr->mutex); | |
111 | return ret; | |
112 | } | |
113 | ||
114 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
115 | size_t len, loff_t *ppos) | |
116 | { | |
117 | struct spufs_attr *attr; | |
118 | u64 val; | |
119 | size_t size; | |
120 | ssize_t ret; | |
121 | ||
122 | attr = file->private_data; | |
123 | if (!attr->set) | |
124 | return -EACCES; | |
125 | ||
126 | ret = mutex_lock_interruptible(&attr->mutex); | |
127 | if (ret) | |
128 | return ret; | |
129 | ||
130 | ret = -EFAULT; | |
131 | size = min(sizeof(attr->set_buf) - 1, len); | |
132 | if (copy_from_user(attr->set_buf, buf, size)) | |
133 | goto out; | |
134 | ||
135 | ret = len; /* claim we got the whole input */ | |
136 | attr->set_buf[size] = '\0'; | |
137 | val = simple_strtol(attr->set_buf, NULL, 0); | |
138 | attr->set(attr->data, val); | |
139 | out: | |
140 | mutex_unlock(&attr->mutex); | |
141 | return ret; | |
142 | } | |
143 | ||
144 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
145 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
146 | { \ | |
147 | __simple_attr_check_format(__fmt, 0ull); \ | |
148 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
149 | } \ | |
150 | static struct file_operations __fops = { \ | |
151 | .owner = THIS_MODULE, \ | |
152 | .open = __fops ## _open, \ | |
153 | .release = spufs_attr_release, \ | |
154 | .read = spufs_attr_read, \ | |
155 | .write = spufs_attr_write, \ | |
156 | }; | |
157 | ||
cbe709c1 | 158 | |
67207b96 AB |
159 | static int |
160 | spufs_mem_open(struct inode *inode, struct file *file) | |
161 | { | |
162 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 163 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 164 | |
47d3a5fa | 165 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 166 | file->private_data = ctx; |
43c2bbd9 CH |
167 | if (!i->i_openers++) |
168 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 169 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
170 | return 0; |
171 | } | |
172 | ||
173 | static int | |
174 | spufs_mem_release(struct inode *inode, struct file *file) | |
175 | { | |
176 | struct spufs_inode_info *i = SPUFS_I(inode); | |
177 | struct spu_context *ctx = i->i_ctx; | |
178 | ||
47d3a5fa | 179 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
180 | if (!--i->i_openers) |
181 | ctx->local_store = NULL; | |
47d3a5fa | 182 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
183 | return 0; |
184 | } | |
185 | ||
bf1ab978 DGM |
186 | static ssize_t |
187 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
188 | size_t size, loff_t *pos) | |
189 | { | |
190 | char *local_store = ctx->ops->get_ls(ctx); | |
191 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
192 | LS_SIZE); | |
193 | } | |
194 | ||
67207b96 AB |
195 | static ssize_t |
196 | spufs_mem_read(struct file *file, char __user *buffer, | |
197 | size_t size, loff_t *pos) | |
198 | { | |
bf1ab978 | 199 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 200 | ssize_t ret; |
67207b96 | 201 | |
c9101bdb CH |
202 | ret = spu_acquire(ctx); |
203 | if (ret) | |
204 | return ret; | |
bf1ab978 | 205 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 206 | spu_release(ctx); |
c9101bdb | 207 | |
67207b96 AB |
208 | return ret; |
209 | } | |
210 | ||
211 | static ssize_t | |
212 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 213 | size_t size, loff_t *ppos) |
67207b96 AB |
214 | { |
215 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 216 | char *local_store; |
aa0ed2bd | 217 | loff_t pos = *ppos; |
8b3d6663 | 218 | int ret; |
67207b96 | 219 | |
aa0ed2bd AB |
220 | if (pos < 0) |
221 | return -EINVAL; | |
222 | if (pos > LS_SIZE) | |
67207b96 | 223 | return -EFBIG; |
aa0ed2bd AB |
224 | if (size > LS_SIZE - pos) |
225 | size = LS_SIZE - pos; | |
8b3d6663 | 226 | |
c9101bdb CH |
227 | ret = spu_acquire(ctx); |
228 | if (ret) | |
229 | return ret; | |
230 | ||
8b3d6663 | 231 | local_store = ctx->ops->get_ls(ctx); |
aa0ed2bd | 232 | ret = copy_from_user(local_store + pos, buffer, size); |
8b3d6663 | 233 | spu_release(ctx); |
aa0ed2bd AB |
234 | |
235 | if (ret) | |
236 | return -EFAULT; | |
237 | *ppos = pos + size; | |
238 | return size; | |
67207b96 AB |
239 | } |
240 | ||
78bde53e BH |
241 | static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma, |
242 | unsigned long address) | |
8b3d6663 | 243 | { |
f1fa74f4 BH |
244 | struct spu_context *ctx = vma->vm_file->private_data; |
245 | unsigned long pfn, offset, addr0 = address; | |
246 | #ifdef CONFIG_SPU_FS_64K_LS | |
247 | struct spu_state *csa = &ctx->csa; | |
248 | int psize; | |
249 | ||
250 | /* Check what page size we are using */ | |
251 | psize = get_slice_psize(vma->vm_mm, address); | |
252 | ||
253 | /* Some sanity checking */ | |
254 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); | |
255 | ||
256 | /* Wow, 64K, cool, we need to align the address though */ | |
257 | if (csa->use_big_pages) { | |
258 | BUG_ON(vma->vm_start & 0xffff); | |
259 | address &= ~0xfffful; | |
260 | } | |
261 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
8b3d6663 | 262 | |
f1fa74f4 | 263 | offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT); |
128b8546 MN |
264 | if (offset >= LS_SIZE) |
265 | return NOPFN_SIGBUS; | |
266 | ||
f1fa74f4 BH |
267 | pr_debug("spufs_mem_mmap_nopfn address=0x%lx -> 0x%lx, offset=0x%lx\n", |
268 | addr0, address, offset); | |
269 | ||
c9101bdb CH |
270 | if (spu_acquire(ctx)) |
271 | return NOPFN_REFAULT; | |
8b3d6663 | 272 | |
ac91cb8d AB |
273 | if (ctx->state == SPU_STATE_SAVED) { |
274 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
932f535d | 275 | & ~_PAGE_NO_CACHE); |
78bde53e | 276 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d AB |
277 | } else { |
278 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
78bde53e BH |
279 | | _PAGE_NO_CACHE); |
280 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; | |
ac91cb8d | 281 | } |
78bde53e | 282 | vm_insert_pfn(vma, address, pfn); |
8b3d6663 | 283 | |
78bde53e | 284 | spu_release(ctx); |
8b3d6663 | 285 | |
78bde53e | 286 | return NOPFN_REFAULT; |
8b3d6663 AB |
287 | } |
288 | ||
78bde53e | 289 | |
8b3d6663 | 290 | static struct vm_operations_struct spufs_mem_mmap_vmops = { |
78bde53e | 291 | .nopfn = spufs_mem_mmap_nopfn, |
8b3d6663 AB |
292 | }; |
293 | ||
f1fa74f4 | 294 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 295 | { |
f1fa74f4 BH |
296 | #ifdef CONFIG_SPU_FS_64K_LS |
297 | struct spu_context *ctx = file->private_data; | |
298 | struct spu_state *csa = &ctx->csa; | |
299 | ||
300 | /* Sanity check VMA alignment */ | |
301 | if (csa->use_big_pages) { | |
302 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," | |
303 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, | |
304 | vma->vm_pgoff); | |
305 | if (vma->vm_start & 0xffff) | |
306 | return -EINVAL; | |
307 | if (vma->vm_pgoff & 0xf) | |
308 | return -EINVAL; | |
309 | } | |
310 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
311 | ||
8b3d6663 AB |
312 | if (!(vma->vm_flags & VM_SHARED)) |
313 | return -EINVAL; | |
67207b96 | 314 | |
78bde53e | 315 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
8b3d6663 AB |
316 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
317 | | _PAGE_NO_CACHE); | |
318 | ||
319 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
320 | return 0; |
321 | } | |
322 | ||
f1fa74f4 | 323 | #ifdef CONFIG_SPU_FS_64K_LS |
1238819a SS |
324 | static unsigned long spufs_get_unmapped_area(struct file *file, |
325 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
326 | unsigned long flags) | |
f1fa74f4 BH |
327 | { |
328 | struct spu_context *ctx = file->private_data; | |
329 | struct spu_state *csa = &ctx->csa; | |
330 | ||
331 | /* If not using big pages, fallback to normal MM g_u_a */ | |
332 | if (!csa->use_big_pages) | |
333 | return current->mm->get_unmapped_area(file, addr, len, | |
334 | pgoff, flags); | |
335 | ||
336 | /* Else, try to obtain a 64K pages slice */ | |
337 | return slice_get_unmapped_area(addr, len, flags, | |
338 | MMU_PAGE_64K, 1, 0); | |
339 | } | |
340 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
341 | ||
5dfe4c96 | 342 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
343 | .open = spufs_mem_open, |
344 | .release = spufs_mem_release, | |
345 | .read = spufs_mem_read, | |
346 | .write = spufs_mem_write, | |
347 | .llseek = generic_file_llseek, | |
348 | .mmap = spufs_mem_mmap, | |
f1fa74f4 BH |
349 | #ifdef CONFIG_SPU_FS_64K_LS |
350 | .get_unmapped_area = spufs_get_unmapped_area, | |
351 | #endif | |
8b3d6663 AB |
352 | }; |
353 | ||
78bde53e | 354 | static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma, |
6df10a82 | 355 | unsigned long address, |
78bde53e | 356 | unsigned long ps_offs, |
27d5bf2a | 357 | unsigned long ps_size) |
6df10a82 | 358 | { |
6df10a82 | 359 | struct spu_context *ctx = vma->vm_file->private_data; |
78bde53e | 360 | unsigned long area, offset = address - vma->vm_start; |
eebead5b | 361 | int ret = 0; |
6df10a82 | 362 | |
038200cf CH |
363 | spu_context_nospu_trace(spufs_ps_nopfn__enter, ctx); |
364 | ||
6df10a82 | 365 | offset += vma->vm_pgoff << PAGE_SHIFT; |
27d5bf2a | 366 | if (offset >= ps_size) |
78bde53e | 367 | return NOPFN_SIGBUS; |
6df10a82 | 368 | |
d5883137 JK |
369 | /* |
370 | * Because we release the mmap_sem, the context may be destroyed while | |
371 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
372 | * in the meantime. | |
373 | */ | |
374 | get_spu_context(ctx); | |
375 | ||
33bfd7a7 AB |
376 | /* |
377 | * We have to wait for context to be loaded before we have | |
378 | * pages to hand out to the user, but we don't want to wait | |
379 | * with the mmap_sem held. | |
380 | * It is possible to drop the mmap_sem here, but then we need | |
381 | * to return NOPFN_REFAULT because the mappings may have | |
382 | * hanged. | |
78bde53e | 383 | */ |
c9101bdb | 384 | if (spu_acquire(ctx)) |
d5883137 | 385 | goto refault; |
c9101bdb | 386 | |
33bfd7a7 AB |
387 | if (ctx->state == SPU_STATE_SAVED) { |
388 | up_read(¤t->mm->mmap_sem); | |
038200cf | 389 | spu_context_nospu_trace(spufs_ps_nopfn__sleep, ctx); |
eebead5b | 390 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
038200cf | 391 | spu_context_trace(spufs_ps_nopfn__wake, ctx, ctx->spu); |
33bfd7a7 | 392 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
393 | } else { |
394 | area = ctx->spu->problem_phys + ps_offs; | |
395 | vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT); | |
038200cf | 396 | spu_context_trace(spufs_ps_nopfn__insert, ctx, ctx->spu); |
33bfd7a7 | 397 | } |
6df10a82 | 398 | |
eebead5b CH |
399 | if (!ret) |
400 | spu_release(ctx); | |
d5883137 JK |
401 | |
402 | refault: | |
403 | put_spu_context(ctx); | |
78bde53e | 404 | return NOPFN_REFAULT; |
6df10a82 MN |
405 | } |
406 | ||
27d5bf2a | 407 | #if SPUFS_MMAP_4K |
78bde53e BH |
408 | static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma, |
409 | unsigned long address) | |
6df10a82 | 410 | { |
78bde53e | 411 | return spufs_ps_nopfn(vma, address, 0x4000, 0x1000); |
6df10a82 MN |
412 | } |
413 | ||
414 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { | |
78bde53e | 415 | .nopfn = spufs_cntl_mmap_nopfn, |
6df10a82 MN |
416 | }; |
417 | ||
418 | /* | |
419 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
420 | */ |
421 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
422 | { | |
423 | if (!(vma->vm_flags & VM_SHARED)) | |
424 | return -EINVAL; | |
425 | ||
78bde53e | 426 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 427 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 428 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
429 | |
430 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
431 | return 0; | |
432 | } | |
27d5bf2a BH |
433 | #else /* SPUFS_MMAP_4K */ |
434 | #define spufs_cntl_mmap NULL | |
435 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 436 | |
197b1a82 | 437 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 438 | { |
e1dbff2b | 439 | struct spu_context *ctx = data; |
c9101bdb | 440 | int ret; |
6df10a82 | 441 | |
c9101bdb CH |
442 | ret = spu_acquire(ctx); |
443 | if (ret) | |
444 | return ret; | |
197b1a82 | 445 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
446 | spu_release(ctx); |
447 | ||
197b1a82 | 448 | return 0; |
6df10a82 MN |
449 | } |
450 | ||
197b1a82 | 451 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 452 | { |
e1dbff2b | 453 | struct spu_context *ctx = data; |
c9101bdb | 454 | int ret; |
e1dbff2b | 455 | |
c9101bdb CH |
456 | ret = spu_acquire(ctx); |
457 | if (ret) | |
458 | return ret; | |
e1dbff2b AB |
459 | ctx->ops->runcntl_write(ctx, val); |
460 | spu_release(ctx); | |
197b1a82 CH |
461 | |
462 | return 0; | |
6df10a82 MN |
463 | } |
464 | ||
e1dbff2b | 465 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 466 | { |
e1dbff2b AB |
467 | struct spufs_inode_info *i = SPUFS_I(inode); |
468 | struct spu_context *ctx = i->i_ctx; | |
469 | ||
47d3a5fa | 470 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 471 | file->private_data = ctx; |
43c2bbd9 CH |
472 | if (!i->i_openers++) |
473 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 474 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 475 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 476 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
477 | } |
478 | ||
43c2bbd9 CH |
479 | static int |
480 | spufs_cntl_release(struct inode *inode, struct file *file) | |
481 | { | |
482 | struct spufs_inode_info *i = SPUFS_I(inode); | |
483 | struct spu_context *ctx = i->i_ctx; | |
484 | ||
74bedc4d | 485 | simple_attr_release(inode, file); |
43c2bbd9 | 486 | |
47d3a5fa | 487 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
488 | if (!--i->i_openers) |
489 | ctx->cntl = NULL; | |
47d3a5fa | 490 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
491 | return 0; |
492 | } | |
493 | ||
5dfe4c96 | 494 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 495 | .open = spufs_cntl_open, |
43c2bbd9 | 496 | .release = spufs_cntl_release, |
8b88b099 CH |
497 | .read = simple_attr_read, |
498 | .write = simple_attr_write, | |
6df10a82 | 499 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
500 | }; |
501 | ||
8b3d6663 AB |
502 | static int |
503 | spufs_regs_open(struct inode *inode, struct file *file) | |
504 | { | |
505 | struct spufs_inode_info *i = SPUFS_I(inode); | |
506 | file->private_data = i->i_ctx; | |
507 | return 0; | |
508 | } | |
509 | ||
bf1ab978 DGM |
510 | static ssize_t |
511 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
512 | size_t size, loff_t *pos) | |
513 | { | |
514 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
515 | return simple_read_from_buffer(buffer, size, pos, | |
516 | lscsa->gprs, sizeof lscsa->gprs); | |
517 | } | |
518 | ||
8b3d6663 AB |
519 | static ssize_t |
520 | spufs_regs_read(struct file *file, char __user *buffer, | |
521 | size_t size, loff_t *pos) | |
522 | { | |
8b3d6663 | 523 | int ret; |
bf1ab978 | 524 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 525 | |
c9101bdb CH |
526 | ret = spu_acquire_saved(ctx); |
527 | if (ret) | |
528 | return ret; | |
bf1ab978 | 529 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 530 | spu_release_saved(ctx); |
8b3d6663 AB |
531 | return ret; |
532 | } | |
533 | ||
534 | static ssize_t | |
535 | spufs_regs_write(struct file *file, const char __user *buffer, | |
536 | size_t size, loff_t *pos) | |
537 | { | |
538 | struct spu_context *ctx = file->private_data; | |
539 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
540 | int ret; | |
541 | ||
542 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); | |
543 | if (size <= 0) | |
544 | return -EFBIG; | |
545 | *pos += size; | |
546 | ||
c9101bdb CH |
547 | ret = spu_acquire_saved(ctx); |
548 | if (ret) | |
549 | return ret; | |
8b3d6663 AB |
550 | |
551 | ret = copy_from_user(lscsa->gprs + *pos - size, | |
552 | buffer, size) ? -EFAULT : size; | |
553 | ||
27b1ea09 | 554 | spu_release_saved(ctx); |
8b3d6663 AB |
555 | return ret; |
556 | } | |
557 | ||
5dfe4c96 | 558 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
559 | .open = spufs_regs_open, |
560 | .read = spufs_regs_read, | |
561 | .write = spufs_regs_write, | |
67207b96 AB |
562 | .llseek = generic_file_llseek, |
563 | }; | |
564 | ||
bf1ab978 DGM |
565 | static ssize_t |
566 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
567 | size_t size, loff_t * pos) | |
568 | { | |
569 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
570 | return simple_read_from_buffer(buffer, size, pos, | |
571 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
572 | } | |
573 | ||
8b3d6663 AB |
574 | static ssize_t |
575 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
576 | size_t size, loff_t * pos) | |
577 | { | |
8b3d6663 | 578 | int ret; |
bf1ab978 | 579 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 580 | |
c9101bdb CH |
581 | ret = spu_acquire_saved(ctx); |
582 | if (ret) | |
583 | return ret; | |
bf1ab978 | 584 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 585 | spu_release_saved(ctx); |
8b3d6663 AB |
586 | return ret; |
587 | } | |
588 | ||
589 | static ssize_t | |
590 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
591 | size_t size, loff_t * pos) | |
592 | { | |
593 | struct spu_context *ctx = file->private_data; | |
594 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
595 | int ret; | |
596 | ||
597 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); | |
598 | if (size <= 0) | |
599 | return -EFBIG; | |
8b3d6663 | 600 | |
c9101bdb CH |
601 | ret = spu_acquire_saved(ctx); |
602 | if (ret) | |
603 | return ret; | |
8b3d6663 | 604 | |
c9101bdb | 605 | *pos += size; |
8b3d6663 AB |
606 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
607 | buffer, size) ? -EFAULT : size; | |
608 | ||
27b1ea09 | 609 | spu_release_saved(ctx); |
8b3d6663 AB |
610 | return ret; |
611 | } | |
612 | ||
5dfe4c96 | 613 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
614 | .open = spufs_regs_open, |
615 | .read = spufs_fpcr_read, | |
616 | .write = spufs_fpcr_write, | |
617 | .llseek = generic_file_llseek, | |
618 | }; | |
619 | ||
67207b96 AB |
620 | /* generic open function for all pipe-like files */ |
621 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
622 | { | |
623 | struct spufs_inode_info *i = SPUFS_I(inode); | |
624 | file->private_data = i->i_ctx; | |
625 | ||
626 | return nonseekable_open(inode, file); | |
627 | } | |
628 | ||
cdcc89bb AB |
629 | /* |
630 | * Read as many bytes from the mailbox as possible, until | |
631 | * one of the conditions becomes true: | |
632 | * | |
633 | * - no more data available in the mailbox | |
634 | * - end of the user provided buffer | |
635 | * - end of the mapped area | |
636 | */ | |
67207b96 AB |
637 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
638 | size_t len, loff_t *pos) | |
639 | { | |
8b3d6663 | 640 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
641 | u32 mbox_data, __user *udata; |
642 | ssize_t count; | |
67207b96 AB |
643 | |
644 | if (len < 4) | |
645 | return -EINVAL; | |
646 | ||
cdcc89bb AB |
647 | if (!access_ok(VERIFY_WRITE, buf, len)) |
648 | return -EFAULT; | |
649 | ||
650 | udata = (void __user *)buf; | |
651 | ||
c9101bdb CH |
652 | count = spu_acquire(ctx); |
653 | if (count) | |
654 | return count; | |
655 | ||
274cef5e | 656 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
657 | int ret; |
658 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
659 | if (ret == 0) | |
660 | break; | |
661 | ||
662 | /* | |
663 | * at the end of the mapped area, we can fault | |
664 | * but still need to return the data we have | |
665 | * read successfully so far. | |
666 | */ | |
667 | ret = __put_user(mbox_data, udata); | |
668 | if (ret) { | |
669 | if (!count) | |
670 | count = -EFAULT; | |
671 | break; | |
672 | } | |
673 | } | |
8b3d6663 | 674 | spu_release(ctx); |
67207b96 | 675 | |
cdcc89bb AB |
676 | if (!count) |
677 | count = -EAGAIN; | |
67207b96 | 678 | |
cdcc89bb | 679 | return count; |
67207b96 AB |
680 | } |
681 | ||
5dfe4c96 | 682 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
683 | .open = spufs_pipe_open, |
684 | .read = spufs_mbox_read, | |
685 | }; | |
686 | ||
687 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
688 | size_t len, loff_t *pos) | |
689 | { | |
8b3d6663 | 690 | struct spu_context *ctx = file->private_data; |
c9101bdb | 691 | ssize_t ret; |
67207b96 AB |
692 | u32 mbox_stat; |
693 | ||
694 | if (len < 4) | |
695 | return -EINVAL; | |
696 | ||
c9101bdb CH |
697 | ret = spu_acquire(ctx); |
698 | if (ret) | |
699 | return ret; | |
8b3d6663 AB |
700 | |
701 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
702 | ||
703 | spu_release(ctx); | |
67207b96 AB |
704 | |
705 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
706 | return -EFAULT; | |
707 | ||
708 | return 4; | |
709 | } | |
710 | ||
5dfe4c96 | 711 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
712 | .open = spufs_pipe_open, |
713 | .read = spufs_mbox_stat_read, | |
714 | }; | |
715 | ||
716 | /* low-level ibox access function */ | |
8b3d6663 | 717 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 718 | { |
8b3d6663 AB |
719 | return ctx->ops->ibox_read(ctx, data); |
720 | } | |
67207b96 | 721 | |
8b3d6663 AB |
722 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
723 | { | |
724 | struct spu_context *ctx = file->private_data; | |
67207b96 | 725 | |
8b3d6663 | 726 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 727 | } |
67207b96 | 728 | |
8b3d6663 AB |
729 | /* interrupt-level ibox callback function. */ |
730 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 731 | { |
8b3d6663 AB |
732 | struct spu_context *ctx = spu->ctx; |
733 | ||
e65c2f6f LB |
734 | if (!ctx) |
735 | return; | |
736 | ||
8b3d6663 AB |
737 | wake_up_all(&ctx->ibox_wq); |
738 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
739 | } |
740 | ||
cdcc89bb AB |
741 | /* |
742 | * Read as many bytes from the interrupt mailbox as possible, until | |
743 | * one of the conditions becomes true: | |
744 | * | |
745 | * - no more data available in the mailbox | |
746 | * - end of the user provided buffer | |
747 | * - end of the mapped area | |
748 | * | |
749 | * If the file is opened without O_NONBLOCK, we wait here until | |
750 | * any data is available, but return when we have been able to | |
751 | * read something. | |
752 | */ | |
67207b96 AB |
753 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
754 | size_t len, loff_t *pos) | |
755 | { | |
8b3d6663 | 756 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
757 | u32 ibox_data, __user *udata; |
758 | ssize_t count; | |
67207b96 AB |
759 | |
760 | if (len < 4) | |
761 | return -EINVAL; | |
762 | ||
cdcc89bb AB |
763 | if (!access_ok(VERIFY_WRITE, buf, len)) |
764 | return -EFAULT; | |
765 | ||
766 | udata = (void __user *)buf; | |
767 | ||
c9101bdb CH |
768 | count = spu_acquire(ctx); |
769 | if (count) | |
eebead5b | 770 | goto out; |
67207b96 | 771 | |
cdcc89bb AB |
772 | /* wait only for the first element */ |
773 | count = 0; | |
67207b96 | 774 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 775 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 776 | count = -EAGAIN; |
eebead5b CH |
777 | goto out_unlock; |
778 | } | |
67207b96 | 779 | } else { |
cdcc89bb | 780 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
781 | if (count) |
782 | goto out; | |
67207b96 AB |
783 | } |
784 | ||
cdcc89bb AB |
785 | /* if we can't write at all, return -EFAULT */ |
786 | count = __put_user(ibox_data, udata); | |
787 | if (count) | |
eebead5b | 788 | goto out_unlock; |
8b3d6663 | 789 | |
cdcc89bb AB |
790 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
791 | int ret; | |
792 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
793 | if (ret == 0) | |
794 | break; | |
795 | /* | |
796 | * at the end of the mapped area, we can fault | |
797 | * but still need to return the data we have | |
798 | * read successfully so far. | |
799 | */ | |
800 | ret = __put_user(ibox_data, udata); | |
801 | if (ret) | |
802 | break; | |
803 | } | |
67207b96 | 804 | |
eebead5b | 805 | out_unlock: |
cdcc89bb | 806 | spu_release(ctx); |
eebead5b | 807 | out: |
cdcc89bb | 808 | return count; |
67207b96 AB |
809 | } |
810 | ||
811 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
812 | { | |
8b3d6663 | 813 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
814 | unsigned int mask; |
815 | ||
8b3d6663 | 816 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 817 | |
c9101bdb CH |
818 | /* |
819 | * For now keep this uninterruptible and also ignore the rule | |
820 | * that poll should not sleep. Will be fixed later. | |
821 | */ | |
822 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
823 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
824 | spu_release(ctx); | |
67207b96 AB |
825 | |
826 | return mask; | |
827 | } | |
828 | ||
5dfe4c96 | 829 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
830 | .open = spufs_pipe_open, |
831 | .read = spufs_ibox_read, | |
832 | .poll = spufs_ibox_poll, | |
833 | .fasync = spufs_ibox_fasync, | |
834 | }; | |
835 | ||
836 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
837 | size_t len, loff_t *pos) | |
838 | { | |
8b3d6663 | 839 | struct spu_context *ctx = file->private_data; |
c9101bdb | 840 | ssize_t ret; |
67207b96 AB |
841 | u32 ibox_stat; |
842 | ||
843 | if (len < 4) | |
844 | return -EINVAL; | |
845 | ||
c9101bdb CH |
846 | ret = spu_acquire(ctx); |
847 | if (ret) | |
848 | return ret; | |
8b3d6663 AB |
849 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
850 | spu_release(ctx); | |
67207b96 AB |
851 | |
852 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
853 | return -EFAULT; | |
854 | ||
855 | return 4; | |
856 | } | |
857 | ||
5dfe4c96 | 858 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
859 | .open = spufs_pipe_open, |
860 | .read = spufs_ibox_stat_read, | |
861 | }; | |
862 | ||
863 | /* low-level mailbox write */ | |
8b3d6663 | 864 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 865 | { |
8b3d6663 AB |
866 | return ctx->ops->wbox_write(ctx, data); |
867 | } | |
67207b96 | 868 | |
8b3d6663 AB |
869 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
870 | { | |
871 | struct spu_context *ctx = file->private_data; | |
872 | int ret; | |
67207b96 | 873 | |
8b3d6663 | 874 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 875 | |
67207b96 AB |
876 | return ret; |
877 | } | |
67207b96 | 878 | |
8b3d6663 AB |
879 | /* interrupt-level wbox callback function. */ |
880 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 881 | { |
8b3d6663 AB |
882 | struct spu_context *ctx = spu->ctx; |
883 | ||
e65c2f6f LB |
884 | if (!ctx) |
885 | return; | |
886 | ||
8b3d6663 AB |
887 | wake_up_all(&ctx->wbox_wq); |
888 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
889 | } |
890 | ||
cdcc89bb AB |
891 | /* |
892 | * Write as many bytes to the interrupt mailbox as possible, until | |
893 | * one of the conditions becomes true: | |
894 | * | |
895 | * - the mailbox is full | |
896 | * - end of the user provided buffer | |
897 | * - end of the mapped area | |
898 | * | |
899 | * If the file is opened without O_NONBLOCK, we wait here until | |
900 | * space is availabyl, but return when we have been able to | |
901 | * write something. | |
902 | */ | |
67207b96 AB |
903 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
904 | size_t len, loff_t *pos) | |
905 | { | |
8b3d6663 | 906 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
907 | u32 wbox_data, __user *udata; |
908 | ssize_t count; | |
67207b96 AB |
909 | |
910 | if (len < 4) | |
911 | return -EINVAL; | |
912 | ||
cdcc89bb AB |
913 | udata = (void __user *)buf; |
914 | if (!access_ok(VERIFY_READ, buf, len)) | |
915 | return -EFAULT; | |
916 | ||
917 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
918 | return -EFAULT; |
919 | ||
c9101bdb CH |
920 | count = spu_acquire(ctx); |
921 | if (count) | |
eebead5b | 922 | goto out; |
8b3d6663 | 923 | |
cdcc89bb AB |
924 | /* |
925 | * make sure we can at least write one element, by waiting | |
926 | * in case of !O_NONBLOCK | |
927 | */ | |
928 | count = 0; | |
67207b96 | 929 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 930 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 931 | count = -EAGAIN; |
eebead5b CH |
932 | goto out_unlock; |
933 | } | |
67207b96 | 934 | } else { |
cdcc89bb | 935 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
936 | if (count) |
937 | goto out; | |
67207b96 AB |
938 | } |
939 | ||
8b3d6663 | 940 | |
96de0e25 | 941 | /* write as much as possible */ |
cdcc89bb AB |
942 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
943 | int ret; | |
944 | ret = __get_user(wbox_data, udata); | |
945 | if (ret) | |
946 | break; | |
947 | ||
948 | ret = spu_wbox_write(ctx, wbox_data); | |
949 | if (ret == 0) | |
950 | break; | |
951 | } | |
952 | ||
eebead5b | 953 | out_unlock: |
cdcc89bb | 954 | spu_release(ctx); |
eebead5b | 955 | out: |
cdcc89bb | 956 | return count; |
67207b96 AB |
957 | } |
958 | ||
959 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
960 | { | |
8b3d6663 | 961 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
962 | unsigned int mask; |
963 | ||
8b3d6663 | 964 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 965 | |
c9101bdb CH |
966 | /* |
967 | * For now keep this uninterruptible and also ignore the rule | |
968 | * that poll should not sleep. Will be fixed later. | |
969 | */ | |
970 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
971 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
972 | spu_release(ctx); | |
67207b96 AB |
973 | |
974 | return mask; | |
975 | } | |
976 | ||
5dfe4c96 | 977 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
978 | .open = spufs_pipe_open, |
979 | .write = spufs_wbox_write, | |
980 | .poll = spufs_wbox_poll, | |
981 | .fasync = spufs_wbox_fasync, | |
982 | }; | |
983 | ||
984 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
985 | size_t len, loff_t *pos) | |
986 | { | |
8b3d6663 | 987 | struct spu_context *ctx = file->private_data; |
c9101bdb | 988 | ssize_t ret; |
67207b96 AB |
989 | u32 wbox_stat; |
990 | ||
991 | if (len < 4) | |
992 | return -EINVAL; | |
993 | ||
c9101bdb CH |
994 | ret = spu_acquire(ctx); |
995 | if (ret) | |
996 | return ret; | |
8b3d6663 AB |
997 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
998 | spu_release(ctx); | |
67207b96 AB |
999 | |
1000 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
1001 | return -EFAULT; | |
1002 | ||
1003 | return 4; | |
1004 | } | |
1005 | ||
5dfe4c96 | 1006 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
1007 | .open = spufs_pipe_open, |
1008 | .read = spufs_wbox_stat_read, | |
1009 | }; | |
1010 | ||
6df10a82 MN |
1011 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
1012 | { | |
1013 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1014 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1015 | |
47d3a5fa | 1016 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1017 | file->private_data = ctx; |
43c2bbd9 CH |
1018 | if (!i->i_openers++) |
1019 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 1020 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1021 | return nonseekable_open(inode, file); |
1022 | } | |
1023 | ||
43c2bbd9 CH |
1024 | static int |
1025 | spufs_signal1_release(struct inode *inode, struct file *file) | |
1026 | { | |
1027 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1028 | struct spu_context *ctx = i->i_ctx; | |
1029 | ||
47d3a5fa | 1030 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1031 | if (!--i->i_openers) |
1032 | ctx->signal1 = NULL; | |
47d3a5fa | 1033 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1034 | return 0; |
1035 | } | |
1036 | ||
bf1ab978 | 1037 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1038 | size_t len, loff_t *pos) |
1039 | { | |
17f88ceb | 1040 | int ret = 0; |
67207b96 AB |
1041 | u32 data; |
1042 | ||
67207b96 AB |
1043 | if (len < 4) |
1044 | return -EINVAL; | |
1045 | ||
17f88ceb DGM |
1046 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1047 | data = ctx->csa.spu_chnldata_RW[3]; | |
1048 | ret = 4; | |
1049 | } | |
8b3d6663 | 1050 | |
17f88ceb DGM |
1051 | if (!ret) |
1052 | goto out; | |
1053 | ||
67207b96 AB |
1054 | if (copy_to_user(buf, &data, 4)) |
1055 | return -EFAULT; | |
1056 | ||
17f88ceb DGM |
1057 | out: |
1058 | return ret; | |
67207b96 AB |
1059 | } |
1060 | ||
bf1ab978 DGM |
1061 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1062 | size_t len, loff_t *pos) | |
1063 | { | |
1064 | int ret; | |
1065 | struct spu_context *ctx = file->private_data; | |
1066 | ||
c9101bdb CH |
1067 | ret = spu_acquire_saved(ctx); |
1068 | if (ret) | |
1069 | return ret; | |
bf1ab978 | 1070 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1071 | spu_release_saved(ctx); |
bf1ab978 DGM |
1072 | |
1073 | return ret; | |
1074 | } | |
1075 | ||
67207b96 AB |
1076 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1077 | size_t len, loff_t *pos) | |
1078 | { | |
1079 | struct spu_context *ctx; | |
c9101bdb | 1080 | ssize_t ret; |
67207b96 AB |
1081 | u32 data; |
1082 | ||
1083 | ctx = file->private_data; | |
67207b96 AB |
1084 | |
1085 | if (len < 4) | |
1086 | return -EINVAL; | |
1087 | ||
1088 | if (copy_from_user(&data, buf, 4)) | |
1089 | return -EFAULT; | |
1090 | ||
c9101bdb CH |
1091 | ret = spu_acquire(ctx); |
1092 | if (ret) | |
1093 | return ret; | |
8b3d6663 AB |
1094 | ctx->ops->signal1_write(ctx, data); |
1095 | spu_release(ctx); | |
67207b96 AB |
1096 | |
1097 | return 4; | |
1098 | } | |
1099 | ||
78bde53e BH |
1100 | static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma, |
1101 | unsigned long address) | |
6df10a82 | 1102 | { |
27d5bf2a | 1103 | #if PAGE_SIZE == 0x1000 |
78bde53e | 1104 | return spufs_ps_nopfn(vma, address, 0x14000, 0x1000); |
27d5bf2a BH |
1105 | #elif PAGE_SIZE == 0x10000 |
1106 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
1107 | * signal 1 and 2 area | |
1108 | */ | |
78bde53e | 1109 | return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); |
27d5bf2a BH |
1110 | #else |
1111 | #error unsupported page size | |
1112 | #endif | |
6df10a82 MN |
1113 | } |
1114 | ||
1115 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { | |
78bde53e | 1116 | .nopfn = spufs_signal1_mmap_nopfn, |
6df10a82 MN |
1117 | }; |
1118 | ||
1119 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1120 | { | |
1121 | if (!(vma->vm_flags & VM_SHARED)) | |
1122 | return -EINVAL; | |
1123 | ||
78bde53e | 1124 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1125 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1126 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1127 | |
1128 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1129 | return 0; | |
1130 | } | |
6df10a82 | 1131 | |
5dfe4c96 | 1132 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1133 | .open = spufs_signal1_open, |
43c2bbd9 | 1134 | .release = spufs_signal1_release, |
67207b96 AB |
1135 | .read = spufs_signal1_read, |
1136 | .write = spufs_signal1_write, | |
6df10a82 | 1137 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
1138 | }; |
1139 | ||
d054b36f JK |
1140 | static const struct file_operations spufs_signal1_nosched_fops = { |
1141 | .open = spufs_signal1_open, | |
1142 | .release = spufs_signal1_release, | |
1143 | .write = spufs_signal1_write, | |
1144 | .mmap = spufs_signal1_mmap, | |
1145 | }; | |
1146 | ||
6df10a82 MN |
1147 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1148 | { | |
1149 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1150 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1151 | |
47d3a5fa | 1152 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1153 | file->private_data = ctx; |
43c2bbd9 CH |
1154 | if (!i->i_openers++) |
1155 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1156 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1157 | return nonseekable_open(inode, file); |
1158 | } | |
1159 | ||
43c2bbd9 CH |
1160 | static int |
1161 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1162 | { | |
1163 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1164 | struct spu_context *ctx = i->i_ctx; | |
1165 | ||
47d3a5fa | 1166 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1167 | if (!--i->i_openers) |
1168 | ctx->signal2 = NULL; | |
47d3a5fa | 1169 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1170 | return 0; |
1171 | } | |
1172 | ||
bf1ab978 | 1173 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1174 | size_t len, loff_t *pos) |
1175 | { | |
17f88ceb | 1176 | int ret = 0; |
67207b96 AB |
1177 | u32 data; |
1178 | ||
67207b96 AB |
1179 | if (len < 4) |
1180 | return -EINVAL; | |
1181 | ||
17f88ceb DGM |
1182 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1183 | data = ctx->csa.spu_chnldata_RW[4]; | |
1184 | ret = 4; | |
1185 | } | |
8b3d6663 | 1186 | |
17f88ceb DGM |
1187 | if (!ret) |
1188 | goto out; | |
1189 | ||
67207b96 AB |
1190 | if (copy_to_user(buf, &data, 4)) |
1191 | return -EFAULT; | |
1192 | ||
17f88ceb | 1193 | out: |
bf1ab978 DGM |
1194 | return ret; |
1195 | } | |
1196 | ||
1197 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1198 | size_t len, loff_t *pos) | |
1199 | { | |
1200 | struct spu_context *ctx = file->private_data; | |
1201 | int ret; | |
1202 | ||
c9101bdb CH |
1203 | ret = spu_acquire_saved(ctx); |
1204 | if (ret) | |
1205 | return ret; | |
bf1ab978 | 1206 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1207 | spu_release_saved(ctx); |
bf1ab978 DGM |
1208 | |
1209 | return ret; | |
67207b96 AB |
1210 | } |
1211 | ||
1212 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1213 | size_t len, loff_t *pos) | |
1214 | { | |
1215 | struct spu_context *ctx; | |
c9101bdb | 1216 | ssize_t ret; |
67207b96 AB |
1217 | u32 data; |
1218 | ||
1219 | ctx = file->private_data; | |
67207b96 AB |
1220 | |
1221 | if (len < 4) | |
1222 | return -EINVAL; | |
1223 | ||
1224 | if (copy_from_user(&data, buf, 4)) | |
1225 | return -EFAULT; | |
1226 | ||
c9101bdb CH |
1227 | ret = spu_acquire(ctx); |
1228 | if (ret) | |
1229 | return ret; | |
8b3d6663 AB |
1230 | ctx->ops->signal2_write(ctx, data); |
1231 | spu_release(ctx); | |
67207b96 AB |
1232 | |
1233 | return 4; | |
1234 | } | |
1235 | ||
27d5bf2a | 1236 | #if SPUFS_MMAP_4K |
78bde53e BH |
1237 | static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma, |
1238 | unsigned long address) | |
6df10a82 | 1239 | { |
27d5bf2a | 1240 | #if PAGE_SIZE == 0x1000 |
78bde53e | 1241 | return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000); |
27d5bf2a BH |
1242 | #elif PAGE_SIZE == 0x10000 |
1243 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole | |
1244 | * signal 1 and 2 area | |
1245 | */ | |
78bde53e | 1246 | return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); |
27d5bf2a BH |
1247 | #else |
1248 | #error unsupported page size | |
1249 | #endif | |
6df10a82 MN |
1250 | } |
1251 | ||
1252 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { | |
78bde53e | 1253 | .nopfn = spufs_signal2_mmap_nopfn, |
6df10a82 MN |
1254 | }; |
1255 | ||
1256 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1257 | { | |
1258 | if (!(vma->vm_flags & VM_SHARED)) | |
1259 | return -EINVAL; | |
1260 | ||
78bde53e | 1261 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1262 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1263 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1264 | |
1265 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1266 | return 0; | |
1267 | } | |
27d5bf2a BH |
1268 | #else /* SPUFS_MMAP_4K */ |
1269 | #define spufs_signal2_mmap NULL | |
1270 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1271 | |
5dfe4c96 | 1272 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1273 | .open = spufs_signal2_open, |
43c2bbd9 | 1274 | .release = spufs_signal2_release, |
67207b96 AB |
1275 | .read = spufs_signal2_read, |
1276 | .write = spufs_signal2_write, | |
6df10a82 | 1277 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
1278 | }; |
1279 | ||
d054b36f JK |
1280 | static const struct file_operations spufs_signal2_nosched_fops = { |
1281 | .open = spufs_signal2_open, | |
1282 | .release = spufs_signal2_release, | |
1283 | .write = spufs_signal2_write, | |
1284 | .mmap = spufs_signal2_mmap, | |
1285 | }; | |
1286 | ||
104f0cc2 ME |
1287 | /* |
1288 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1289 | * work of acquiring (or not) the SPU context before calling through | |
1290 | * to the actual get routine. The set routine is called directly. | |
1291 | */ | |
1292 | #define SPU_ATTR_NOACQUIRE 0 | |
1293 | #define SPU_ATTR_ACQUIRE 1 | |
1294 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1295 | ||
1296 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1297 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1298 | { \ |
1299 | struct spu_context *ctx = data; \ | |
c9101bdb | 1300 | int ret = 0; \ |
104f0cc2 ME |
1301 | \ |
1302 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1303 | ret = spu_acquire(ctx); \ |
1304 | if (ret) \ | |
1305 | return ret; \ | |
197b1a82 | 1306 | *val = __get(ctx); \ |
104f0cc2 ME |
1307 | spu_release(ctx); \ |
1308 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1309 | ret = spu_acquire_saved(ctx); \ |
1310 | if (ret) \ | |
1311 | return ret; \ | |
197b1a82 | 1312 | *val = __get(ctx); \ |
104f0cc2 ME |
1313 | spu_release_saved(ctx); \ |
1314 | } else \ | |
197b1a82 | 1315 | *val = __get(ctx); \ |
104f0cc2 | 1316 | \ |
197b1a82 | 1317 | return 0; \ |
104f0cc2 | 1318 | } \ |
197b1a82 | 1319 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1320 | |
197b1a82 | 1321 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1322 | { |
1323 | struct spu_context *ctx = data; | |
c9101bdb | 1324 | int ret; |
67207b96 | 1325 | |
c9101bdb CH |
1326 | ret = spu_acquire(ctx); |
1327 | if (ret) | |
1328 | return ret; | |
8b3d6663 AB |
1329 | ctx->ops->signal1_type_set(ctx, val); |
1330 | spu_release(ctx); | |
197b1a82 CH |
1331 | |
1332 | return 0; | |
67207b96 AB |
1333 | } |
1334 | ||
104f0cc2 | 1335 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1336 | { |
bf1ab978 DGM |
1337 | return ctx->ops->signal1_type_get(ctx); |
1338 | } | |
104f0cc2 | 1339 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1340 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1341 | |
67207b96 | 1342 | |
197b1a82 | 1343 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1344 | { |
1345 | struct spu_context *ctx = data; | |
c9101bdb | 1346 | int ret; |
67207b96 | 1347 | |
c9101bdb CH |
1348 | ret = spu_acquire(ctx); |
1349 | if (ret) | |
1350 | return ret; | |
8b3d6663 AB |
1351 | ctx->ops->signal2_type_set(ctx, val); |
1352 | spu_release(ctx); | |
197b1a82 CH |
1353 | |
1354 | return 0; | |
67207b96 AB |
1355 | } |
1356 | ||
104f0cc2 | 1357 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1358 | { |
bf1ab978 DGM |
1359 | return ctx->ops->signal2_type_get(ctx); |
1360 | } | |
104f0cc2 | 1361 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1362 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1363 | |
27d5bf2a | 1364 | #if SPUFS_MMAP_4K |
78bde53e BH |
1365 | static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, |
1366 | unsigned long address) | |
d9379c4b | 1367 | { |
78bde53e | 1368 | return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); |
d9379c4b AB |
1369 | } |
1370 | ||
1371 | static struct vm_operations_struct spufs_mss_mmap_vmops = { | |
78bde53e | 1372 | .nopfn = spufs_mss_mmap_nopfn, |
d9379c4b AB |
1373 | }; |
1374 | ||
1375 | /* | |
1376 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1377 | */ |
1378 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1379 | { | |
1380 | if (!(vma->vm_flags & VM_SHARED)) | |
1381 | return -EINVAL; | |
1382 | ||
78bde53e | 1383 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
d9379c4b | 1384 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1385 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
d9379c4b AB |
1386 | |
1387 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1388 | return 0; | |
1389 | } | |
27d5bf2a BH |
1390 | #else /* SPUFS_MMAP_4K */ |
1391 | #define spufs_mss_mmap NULL | |
1392 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1393 | |
1394 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1395 | { | |
1396 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1397 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1398 | |
1399 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1400 | |
47d3a5fa | 1401 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1402 | if (!i->i_openers++) |
1403 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1404 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1405 | return nonseekable_open(inode, file); |
1406 | } | |
1407 | ||
43c2bbd9 CH |
1408 | static int |
1409 | spufs_mss_release(struct inode *inode, struct file *file) | |
1410 | { | |
1411 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1412 | struct spu_context *ctx = i->i_ctx; | |
1413 | ||
47d3a5fa | 1414 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1415 | if (!--i->i_openers) |
1416 | ctx->mss = NULL; | |
47d3a5fa | 1417 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1418 | return 0; |
1419 | } | |
1420 | ||
5dfe4c96 | 1421 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1422 | .open = spufs_mss_open, |
43c2bbd9 | 1423 | .release = spufs_mss_release, |
d9379c4b | 1424 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1425 | }; |
1426 | ||
78bde53e BH |
1427 | static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, |
1428 | unsigned long address) | |
27d5bf2a | 1429 | { |
78bde53e | 1430 | return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); |
27d5bf2a BH |
1431 | } |
1432 | ||
1433 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { | |
78bde53e | 1434 | .nopfn = spufs_psmap_mmap_nopfn, |
27d5bf2a BH |
1435 | }; |
1436 | ||
1437 | /* | |
1438 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1439 | */ | |
1440 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1441 | { | |
1442 | if (!(vma->vm_flags & VM_SHARED)) | |
1443 | return -EINVAL; | |
1444 | ||
78bde53e | 1445 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
27d5bf2a BH |
1446 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
1447 | | _PAGE_NO_CACHE | _PAGE_GUARDED); | |
1448 | ||
1449 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1454 | { | |
1455 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1456 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1457 | |
47d3a5fa | 1458 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1459 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1460 | if (!i->i_openers++) |
1461 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1462 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1463 | return nonseekable_open(inode, file); |
1464 | } | |
1465 | ||
43c2bbd9 CH |
1466 | static int |
1467 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1468 | { | |
1469 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1470 | struct spu_context *ctx = i->i_ctx; | |
1471 | ||
47d3a5fa | 1472 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1473 | if (!--i->i_openers) |
1474 | ctx->psmap = NULL; | |
47d3a5fa | 1475 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1476 | return 0; |
1477 | } | |
1478 | ||
5dfe4c96 | 1479 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1480 | .open = spufs_psmap_open, |
43c2bbd9 | 1481 | .release = spufs_psmap_release, |
27d5bf2a | 1482 | .mmap = spufs_psmap_mmap, |
d9379c4b AB |
1483 | }; |
1484 | ||
1485 | ||
27d5bf2a | 1486 | #if SPUFS_MMAP_4K |
78bde53e BH |
1487 | static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, |
1488 | unsigned long address) | |
6df10a82 | 1489 | { |
78bde53e | 1490 | return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); |
6df10a82 MN |
1491 | } |
1492 | ||
1493 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { | |
78bde53e | 1494 | .nopfn = spufs_mfc_mmap_nopfn, |
6df10a82 MN |
1495 | }; |
1496 | ||
1497 | /* | |
1498 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1499 | */ |
1500 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1501 | { | |
1502 | if (!(vma->vm_flags & VM_SHARED)) | |
1503 | return -EINVAL; | |
1504 | ||
78bde53e | 1505 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1506 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1507 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1508 | |
1509 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1510 | return 0; | |
1511 | } | |
27d5bf2a BH |
1512 | #else /* SPUFS_MMAP_4K */ |
1513 | #define spufs_mfc_mmap NULL | |
1514 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1515 | |
1516 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1517 | { | |
1518 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1519 | struct spu_context *ctx = i->i_ctx; | |
1520 | ||
1521 | /* we don't want to deal with DMA into other processes */ | |
1522 | if (ctx->owner != current->mm) | |
1523 | return -EINVAL; | |
1524 | ||
1525 | if (atomic_read(&inode->i_count) != 1) | |
1526 | return -EBUSY; | |
1527 | ||
47d3a5fa | 1528 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1529 | file->private_data = ctx; |
43c2bbd9 CH |
1530 | if (!i->i_openers++) |
1531 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1532 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1533 | return nonseekable_open(inode, file); |
1534 | } | |
1535 | ||
43c2bbd9 CH |
1536 | static int |
1537 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1538 | { | |
1539 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1540 | struct spu_context *ctx = i->i_ctx; | |
1541 | ||
47d3a5fa | 1542 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1543 | if (!--i->i_openers) |
1544 | ctx->mfc = NULL; | |
47d3a5fa | 1545 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1546 | return 0; |
1547 | } | |
1548 | ||
a33a7d73 AB |
1549 | /* interrupt-level mfc callback function. */ |
1550 | void spufs_mfc_callback(struct spu *spu) | |
1551 | { | |
1552 | struct spu_context *ctx = spu->ctx; | |
1553 | ||
e65c2f6f LB |
1554 | if (!ctx) |
1555 | return; | |
1556 | ||
a33a7d73 AB |
1557 | wake_up_all(&ctx->mfc_wq); |
1558 | ||
e48b1b45 | 1559 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1560 | if (ctx->mfc_fasync) { |
1561 | u32 free_elements, tagstatus; | |
1562 | unsigned int mask; | |
1563 | ||
1564 | /* no need for spu_acquire in interrupt context */ | |
1565 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1566 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1567 | ||
1568 | mask = 0; | |
1569 | if (free_elements & 0xffff) | |
1570 | mask |= POLLOUT; | |
1571 | if (tagstatus & ctx->tagwait) | |
1572 | mask |= POLLIN; | |
1573 | ||
1574 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1579 | { | |
1580 | /* See if there is one tag group is complete */ | |
1581 | /* FIXME we need locking around tagwait */ | |
1582 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1583 | ctx->tagwait &= ~*status; | |
1584 | if (*status) | |
1585 | return 1; | |
1586 | ||
1587 | /* enable interrupt waiting for any tag group, | |
1588 | may silently fail if interrupts are already enabled */ | |
1589 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1594 | size_t size, loff_t *pos) | |
1595 | { | |
1596 | struct spu_context *ctx = file->private_data; | |
1597 | int ret = -EINVAL; | |
1598 | u32 status; | |
1599 | ||
1600 | if (size != 4) | |
1601 | goto out; | |
1602 | ||
c9101bdb CH |
1603 | ret = spu_acquire(ctx); |
1604 | if (ret) | |
1605 | return ret; | |
1606 | ||
1607 | ret = -EINVAL; | |
a33a7d73 AB |
1608 | if (file->f_flags & O_NONBLOCK) { |
1609 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1610 | if (!(status & ctx->tagwait)) | |
1611 | ret = -EAGAIN; | |
1612 | else | |
c9101bdb | 1613 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1614 | ctx->tagwait &= ~status; |
1615 | } else { | |
1616 | ret = spufs_wait(ctx->mfc_wq, | |
1617 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1618 | if (ret) |
1619 | goto out; | |
a33a7d73 AB |
1620 | } |
1621 | spu_release(ctx); | |
1622 | ||
a33a7d73 AB |
1623 | ret = 4; |
1624 | if (copy_to_user(buffer, &status, 4)) | |
1625 | ret = -EFAULT; | |
1626 | ||
1627 | out: | |
1628 | return ret; | |
1629 | } | |
1630 | ||
1631 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1632 | { | |
1633 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, | |
1634 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); | |
1635 | ||
1636 | switch (cmd->cmd) { | |
1637 | case MFC_PUT_CMD: | |
1638 | case MFC_PUTF_CMD: | |
1639 | case MFC_PUTB_CMD: | |
1640 | case MFC_GET_CMD: | |
1641 | case MFC_GETF_CMD: | |
1642 | case MFC_GETB_CMD: | |
1643 | break; | |
1644 | default: | |
1645 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1646 | return -EIO; | |
1647 | } | |
1648 | ||
1649 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
1650 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", | |
1651 | cmd->ea, cmd->lsa); | |
1652 | return -EIO; | |
1653 | } | |
1654 | ||
1655 | switch (cmd->size & 0xf) { | |
1656 | case 1: | |
1657 | break; | |
1658 | case 2: | |
1659 | if (cmd->lsa & 1) | |
1660 | goto error; | |
1661 | break; | |
1662 | case 4: | |
1663 | if (cmd->lsa & 3) | |
1664 | goto error; | |
1665 | break; | |
1666 | case 8: | |
1667 | if (cmd->lsa & 7) | |
1668 | goto error; | |
1669 | break; | |
1670 | case 0: | |
1671 | if (cmd->lsa & 15) | |
1672 | goto error; | |
1673 | break; | |
1674 | error: | |
1675 | default: | |
1676 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1677 | cmd->lsa & 0xf, cmd->size); | |
1678 | return -EIO; | |
1679 | } | |
1680 | ||
1681 | if (cmd->size > 16 * 1024) { | |
1682 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1683 | return -EIO; | |
1684 | } | |
1685 | ||
1686 | if (cmd->tag & 0xfff0) { | |
1687 | /* we reserve the higher tag numbers for kernel use */ | |
1688 | pr_debug("invalid DMA tag\n"); | |
1689 | return -EIO; | |
1690 | } | |
1691 | ||
1692 | if (cmd->class) { | |
1693 | /* not supported in this version */ | |
1694 | pr_debug("invalid DMA class\n"); | |
1695 | return -EIO; | |
1696 | } | |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | ||
1701 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1702 | struct mfc_dma_command cmd, | |
1703 | int *error) | |
1704 | { | |
1705 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1706 | if (*error == -EAGAIN) { | |
1707 | /* wait for any tag group to complete | |
1708 | so we have space for the new command */ | |
1709 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1710 | /* try again, because the queue might be | |
1711 | empty again */ | |
1712 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1713 | if (*error == -EAGAIN) | |
1714 | return 0; | |
1715 | } | |
1716 | return 1; | |
1717 | } | |
1718 | ||
1719 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1720 | size_t size, loff_t *pos) | |
1721 | { | |
1722 | struct spu_context *ctx = file->private_data; | |
1723 | struct mfc_dma_command cmd; | |
1724 | int ret = -EINVAL; | |
1725 | ||
1726 | if (size != sizeof cmd) | |
1727 | goto out; | |
1728 | ||
1729 | ret = -EFAULT; | |
1730 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1731 | goto out; | |
1732 | ||
1733 | ret = spufs_check_valid_dma(&cmd); | |
1734 | if (ret) | |
1735 | goto out; | |
1736 | ||
c9101bdb CH |
1737 | ret = spu_acquire(ctx); |
1738 | if (ret) | |
1739 | goto out; | |
1740 | ||
33bfd7a7 | 1741 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1742 | if (ret) |
1743 | goto out; | |
1744 | ||
a33a7d73 AB |
1745 | if (file->f_flags & O_NONBLOCK) { |
1746 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1747 | } else { | |
1748 | int status; | |
1749 | ret = spufs_wait(ctx->mfc_wq, | |
1750 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1751 | if (ret) |
1752 | goto out; | |
a33a7d73 AB |
1753 | if (status) |
1754 | ret = status; | |
1755 | } | |
a33a7d73 AB |
1756 | |
1757 | if (ret) | |
933b0e35 | 1758 | goto out_unlock; |
a33a7d73 AB |
1759 | |
1760 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1761 | ret = size; |
a33a7d73 | 1762 | |
933b0e35 KA |
1763 | out_unlock: |
1764 | spu_release(ctx); | |
a33a7d73 AB |
1765 | out: |
1766 | return ret; | |
1767 | } | |
1768 | ||
1769 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1770 | { | |
1771 | struct spu_context *ctx = file->private_data; | |
1772 | u32 free_elements, tagstatus; | |
1773 | unsigned int mask; | |
1774 | ||
933b0e35 KA |
1775 | poll_wait(file, &ctx->mfc_wq, wait); |
1776 | ||
c9101bdb CH |
1777 | /* |
1778 | * For now keep this uninterruptible and also ignore the rule | |
1779 | * that poll should not sleep. Will be fixed later. | |
1780 | */ | |
1781 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1782 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1783 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1784 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1785 | spu_release(ctx); | |
1786 | ||
a33a7d73 AB |
1787 | mask = 0; |
1788 | if (free_elements & 0xffff) | |
1789 | mask |= POLLOUT | POLLWRNORM; | |
1790 | if (tagstatus & ctx->tagwait) | |
1791 | mask |= POLLIN | POLLRDNORM; | |
1792 | ||
e48b1b45 | 1793 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1794 | free_elements, tagstatus, ctx->tagwait); |
1795 | ||
1796 | return mask; | |
1797 | } | |
1798 | ||
73b6af8a | 1799 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1800 | { |
1801 | struct spu_context *ctx = file->private_data; | |
1802 | int ret; | |
1803 | ||
c9101bdb CH |
1804 | ret = spu_acquire(ctx); |
1805 | if (ret) | |
eebead5b | 1806 | goto out; |
a33a7d73 AB |
1807 | #if 0 |
1808 | /* this currently hangs */ | |
1809 | ret = spufs_wait(ctx->mfc_wq, | |
1810 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1811 | if (ret) | |
1812 | goto out; | |
1813 | ret = spufs_wait(ctx->mfc_wq, | |
1814 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1815 | if (ret) |
1816 | goto out; | |
a33a7d73 AB |
1817 | #else |
1818 | ret = 0; | |
1819 | #endif | |
1820 | spu_release(ctx); | |
eebead5b | 1821 | out: |
a33a7d73 AB |
1822 | return ret; |
1823 | } | |
1824 | ||
1825 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1826 | int datasync) | |
1827 | { | |
73b6af8a | 1828 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1829 | } |
1830 | ||
1831 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1832 | { | |
1833 | struct spu_context *ctx = file->private_data; | |
1834 | ||
1835 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1836 | } | |
1837 | ||
5dfe4c96 | 1838 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1839 | .open = spufs_mfc_open, |
43c2bbd9 | 1840 | .release = spufs_mfc_release, |
a33a7d73 AB |
1841 | .read = spufs_mfc_read, |
1842 | .write = spufs_mfc_write, | |
1843 | .poll = spufs_mfc_poll, | |
1844 | .flush = spufs_mfc_flush, | |
1845 | .fsync = spufs_mfc_fsync, | |
1846 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1847 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1848 | }; |
1849 | ||
197b1a82 | 1850 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1851 | { |
1852 | struct spu_context *ctx = data; | |
c9101bdb CH |
1853 | int ret; |
1854 | ||
1855 | ret = spu_acquire(ctx); | |
1856 | if (ret) | |
1857 | return ret; | |
8b3d6663 AB |
1858 | ctx->ops->npc_write(ctx, val); |
1859 | spu_release(ctx); | |
197b1a82 CH |
1860 | |
1861 | return 0; | |
67207b96 AB |
1862 | } |
1863 | ||
104f0cc2 | 1864 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1865 | { |
1866 | return ctx->ops->npc_read(ctx); | |
1867 | } | |
104f0cc2 ME |
1868 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1869 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1870 | |
197b1a82 | 1871 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1872 | { |
1873 | struct spu_context *ctx = data; | |
1874 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1875 | int ret; |
1876 | ||
1877 | ret = spu_acquire_saved(ctx); | |
1878 | if (ret) | |
1879 | return ret; | |
8b3d6663 | 1880 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1881 | spu_release_saved(ctx); |
197b1a82 CH |
1882 | |
1883 | return 0; | |
8b3d6663 AB |
1884 | } |
1885 | ||
104f0cc2 | 1886 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1887 | { |
8b3d6663 | 1888 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1889 | return lscsa->decr.slot[0]; |
1890 | } | |
104f0cc2 ME |
1891 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1892 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1893 | |
197b1a82 | 1894 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1895 | { |
1896 | struct spu_context *ctx = data; | |
c9101bdb CH |
1897 | int ret; |
1898 | ||
1899 | ret = spu_acquire_saved(ctx); | |
1900 | if (ret) | |
1901 | return ret; | |
d40a01d4 MN |
1902 | if (val) |
1903 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1904 | else | |
1905 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1906 | spu_release_saved(ctx); |
197b1a82 CH |
1907 | |
1908 | return 0; | |
8b3d6663 AB |
1909 | } |
1910 | ||
104f0cc2 | 1911 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1912 | { |
d40a01d4 MN |
1913 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1914 | return SPU_DECR_STATUS_RUNNING; | |
1915 | else | |
1916 | return 0; | |
bf1ab978 | 1917 | } |
104f0cc2 ME |
1918 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1919 | spufs_decr_status_set, "0x%llx\n", | |
1920 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1921 | |
197b1a82 | 1922 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1923 | { |
1924 | struct spu_context *ctx = data; | |
1925 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1926 | int ret; |
1927 | ||
1928 | ret = spu_acquire_saved(ctx); | |
1929 | if (ret) | |
1930 | return ret; | |
8b3d6663 | 1931 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1932 | spu_release_saved(ctx); |
197b1a82 CH |
1933 | |
1934 | return 0; | |
8b3d6663 AB |
1935 | } |
1936 | ||
104f0cc2 | 1937 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1938 | { |
8b3d6663 | 1939 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1940 | return lscsa->event_mask.slot[0]; |
1941 | } | |
1942 | ||
104f0cc2 ME |
1943 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1944 | spufs_event_mask_set, "0x%llx\n", | |
1945 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1946 | |
104f0cc2 | 1947 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1948 | { |
b9e3bd77 | 1949 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1950 | u64 stat; |
b9e3bd77 DGM |
1951 | stat = state->spu_chnlcnt_RW[0]; |
1952 | if (stat) | |
bf1ab978 DGM |
1953 | return state->spu_chnldata_RW[0]; |
1954 | return 0; | |
1955 | } | |
104f0cc2 ME |
1956 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1957 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1958 | |
197b1a82 | 1959 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1960 | { |
1961 | struct spu_context *ctx = data; | |
1962 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1963 | int ret; |
1964 | ||
1965 | ret = spu_acquire_saved(ctx); | |
1966 | if (ret) | |
1967 | return ret; | |
8b3d6663 | 1968 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1969 | spu_release_saved(ctx); |
197b1a82 CH |
1970 | |
1971 | return 0; | |
8b3d6663 AB |
1972 | } |
1973 | ||
104f0cc2 | 1974 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1975 | { |
8b3d6663 | 1976 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1977 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1978 | } |
104f0cc2 ME |
1979 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1980 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1981 | |
104f0cc2 | 1982 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1983 | { |
7b1a7014 AB |
1984 | u64 num; |
1985 | ||
7b1a7014 AB |
1986 | if (ctx->state == SPU_STATE_RUNNABLE) |
1987 | num = ctx->spu->number; | |
1988 | else | |
1989 | num = (unsigned int)-1; | |
7b1a7014 AB |
1990 | |
1991 | return num; | |
1992 | } | |
104f0cc2 ME |
1993 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1994 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1995 | |
104f0cc2 | 1996 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1997 | { |
1998 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1999 | return ctx->object_id; |
bf1ab978 DGM |
2000 | } |
2001 | ||
197b1a82 | 2002 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
2003 | { |
2004 | struct spu_context *ctx = data; | |
2005 | ctx->object_id = id; | |
197b1a82 CH |
2006 | |
2007 | return 0; | |
86767277 AB |
2008 | } |
2009 | ||
104f0cc2 ME |
2010 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
2011 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 2012 | |
104f0cc2 | 2013 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 2014 | { |
bf1ab978 DGM |
2015 | return ctx->csa.priv2.spu_lslr_RW; |
2016 | } | |
104f0cc2 ME |
2017 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
2018 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
2019 | |
2020 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2021 | { | |
2022 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2023 | struct spu_context *ctx = i->i_ctx; | |
2024 | file->private_data = ctx; | |
2025 | return 0; | |
2026 | } | |
2027 | ||
cbe709c1 BH |
2028 | static int spufs_caps_show(struct seq_file *s, void *private) |
2029 | { | |
2030 | struct spu_context *ctx = s->private; | |
2031 | ||
2032 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2033 | seq_puts(s, "sched\n"); | |
2034 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2035 | seq_puts(s, "step\n"); | |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2040 | { | |
2041 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2042 | } | |
2043 | ||
2044 | static const struct file_operations spufs_caps_fops = { | |
2045 | .open = spufs_caps_open, | |
2046 | .read = seq_read, | |
2047 | .llseek = seq_lseek, | |
2048 | .release = single_release, | |
2049 | }; | |
2050 | ||
bf1ab978 DGM |
2051 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2052 | char __user *buf, size_t len, loff_t *pos) | |
2053 | { | |
bf1ab978 DGM |
2054 | u32 data; |
2055 | ||
cbea9238 JK |
2056 | /* EOF if there's no entry in the mbox */ |
2057 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2058 | return 0; | |
2059 | ||
2060 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2061 | |
2062 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2063 | } | |
2064 | ||
69a2f00c DGM |
2065 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2066 | size_t len, loff_t *pos) | |
2067 | { | |
bf1ab978 | 2068 | int ret; |
69a2f00c | 2069 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2070 | |
2071 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2072 | return -EFAULT; | |
2073 | ||
c9101bdb CH |
2074 | ret = spu_acquire_saved(ctx); |
2075 | if (ret) | |
2076 | return ret; | |
69a2f00c | 2077 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2078 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2079 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2080 | spu_release_saved(ctx); |
69a2f00c | 2081 | |
bf1ab978 | 2082 | return ret; |
69a2f00c DGM |
2083 | } |
2084 | ||
5dfe4c96 | 2085 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2086 | .open = spufs_info_open, |
2087 | .read = spufs_mbox_info_read, | |
2088 | .llseek = generic_file_llseek, | |
2089 | }; | |
2090 | ||
bf1ab978 DGM |
2091 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2092 | char __user *buf, size_t len, loff_t *pos) | |
2093 | { | |
bf1ab978 DGM |
2094 | u32 data; |
2095 | ||
cbea9238 JK |
2096 | /* EOF if there's no entry in the ibox */ |
2097 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2098 | return 0; | |
2099 | ||
2100 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2101 | |
2102 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2103 | } | |
2104 | ||
69a2f00c DGM |
2105 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2106 | size_t len, loff_t *pos) | |
2107 | { | |
2108 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2109 | int ret; |
69a2f00c DGM |
2110 | |
2111 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2112 | return -EFAULT; | |
2113 | ||
c9101bdb CH |
2114 | ret = spu_acquire_saved(ctx); |
2115 | if (ret) | |
2116 | return ret; | |
69a2f00c | 2117 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2118 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2119 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2120 | spu_release_saved(ctx); |
69a2f00c | 2121 | |
bf1ab978 | 2122 | return ret; |
69a2f00c DGM |
2123 | } |
2124 | ||
5dfe4c96 | 2125 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2126 | .open = spufs_info_open, |
2127 | .read = spufs_ibox_info_read, | |
2128 | .llseek = generic_file_llseek, | |
2129 | }; | |
2130 | ||
bf1ab978 DGM |
2131 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2132 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2133 | { |
69a2f00c DGM |
2134 | int i, cnt; |
2135 | u32 data[4]; | |
2136 | u32 wbox_stat; | |
2137 | ||
bf1ab978 DGM |
2138 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2139 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2140 | for (i = 0; i < cnt; i++) { | |
2141 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2142 | } | |
2143 | ||
2144 | return simple_read_from_buffer(buf, len, pos, &data, | |
2145 | cnt * sizeof(u32)); | |
2146 | } | |
2147 | ||
2148 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2149 | size_t len, loff_t *pos) | |
2150 | { | |
2151 | struct spu_context *ctx = file->private_data; | |
2152 | int ret; | |
2153 | ||
69a2f00c DGM |
2154 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2155 | return -EFAULT; | |
2156 | ||
c9101bdb CH |
2157 | ret = spu_acquire_saved(ctx); |
2158 | if (ret) | |
2159 | return ret; | |
69a2f00c | 2160 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2161 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2162 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2163 | spu_release_saved(ctx); |
69a2f00c | 2164 | |
bf1ab978 | 2165 | return ret; |
69a2f00c DGM |
2166 | } |
2167 | ||
5dfe4c96 | 2168 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2169 | .open = spufs_info_open, |
2170 | .read = spufs_wbox_info_read, | |
2171 | .llseek = generic_file_llseek, | |
2172 | }; | |
2173 | ||
bf1ab978 DGM |
2174 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2175 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2176 | { |
b9e3bd77 DGM |
2177 | struct spu_dma_info info; |
2178 | struct mfc_cq_sr *qp, *spuqp; | |
2179 | int i; | |
2180 | ||
b9e3bd77 DGM |
2181 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2182 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2183 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2184 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2185 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2186 | for (i = 0; i < 16; i++) { | |
2187 | qp = &info.dma_info_command_data[i]; | |
2188 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2189 | ||
2190 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2191 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2192 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2193 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2194 | } | |
b9e3bd77 DGM |
2195 | |
2196 | return simple_read_from_buffer(buf, len, pos, &info, | |
2197 | sizeof info); | |
2198 | } | |
2199 | ||
bf1ab978 DGM |
2200 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2201 | size_t len, loff_t *pos) | |
2202 | { | |
2203 | struct spu_context *ctx = file->private_data; | |
2204 | int ret; | |
2205 | ||
2206 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2207 | return -EFAULT; | |
2208 | ||
c9101bdb CH |
2209 | ret = spu_acquire_saved(ctx); |
2210 | if (ret) | |
2211 | return ret; | |
bf1ab978 DGM |
2212 | spin_lock(&ctx->csa.register_lock); |
2213 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2214 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2215 | spu_release_saved(ctx); |
bf1ab978 DGM |
2216 | |
2217 | return ret; | |
2218 | } | |
2219 | ||
5dfe4c96 | 2220 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2221 | .open = spufs_info_open, |
2222 | .read = spufs_dma_info_read, | |
2223 | }; | |
2224 | ||
bf1ab978 DGM |
2225 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2226 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2227 | { |
b9e3bd77 | 2228 | struct spu_proxydma_info info; |
b9e3bd77 | 2229 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2230 | int ret = sizeof info; |
b9e3bd77 DGM |
2231 | int i; |
2232 | ||
2233 | if (len < ret) | |
2234 | return -EINVAL; | |
2235 | ||
2236 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2237 | return -EFAULT; | |
2238 | ||
b9e3bd77 DGM |
2239 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2240 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2241 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2242 | for (i = 0; i < 8; i++) { | |
2243 | qp = &info.proxydma_info_command_data[i]; | |
2244 | puqp = &ctx->csa.priv2.puq[i]; | |
2245 | ||
2246 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2247 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2248 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2249 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2250 | } | |
bf1ab978 DGM |
2251 | |
2252 | return simple_read_from_buffer(buf, len, pos, &info, | |
2253 | sizeof info); | |
2254 | } | |
2255 | ||
2256 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2257 | size_t len, loff_t *pos) | |
2258 | { | |
2259 | struct spu_context *ctx = file->private_data; | |
2260 | int ret; | |
2261 | ||
c9101bdb CH |
2262 | ret = spu_acquire_saved(ctx); |
2263 | if (ret) | |
2264 | return ret; | |
bf1ab978 DGM |
2265 | spin_lock(&ctx->csa.register_lock); |
2266 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2267 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2268 | spu_release_saved(ctx); |
b9e3bd77 | 2269 | |
b9e3bd77 DGM |
2270 | return ret; |
2271 | } | |
2272 | ||
5dfe4c96 | 2273 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2274 | .open = spufs_info_open, |
2275 | .read = spufs_proxydma_info_read, | |
2276 | }; | |
2277 | ||
476273ad CH |
2278 | static int spufs_show_tid(struct seq_file *s, void *private) |
2279 | { | |
2280 | struct spu_context *ctx = s->private; | |
2281 | ||
2282 | seq_printf(s, "%d\n", ctx->tid); | |
2283 | return 0; | |
2284 | } | |
2285 | ||
2286 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2287 | { | |
2288 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2289 | } | |
2290 | ||
2291 | static const struct file_operations spufs_tid_fops = { | |
2292 | .open = spufs_tid_open, | |
2293 | .read = seq_read, | |
2294 | .llseek = seq_lseek, | |
2295 | .release = single_release, | |
2296 | }; | |
2297 | ||
e9f8a0b6 CH |
2298 | static const char *ctx_state_names[] = { |
2299 | "user", "system", "iowait", "loaded" | |
2300 | }; | |
2301 | ||
2302 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2303 | enum spu_utilization_state state) |
e9f8a0b6 | 2304 | { |
27ec41d3 AD |
2305 | struct timespec ts; |
2306 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2307 | |
27ec41d3 AD |
2308 | /* |
2309 | * In general, utilization statistics are updated by the controlling | |
2310 | * thread as the spu context moves through various well defined | |
2311 | * state transitions, but if the context is lazily loaded its | |
2312 | * utilization statistics are not updated as the controlling thread | |
2313 | * is not tightly coupled with the execution of the spu context. We | |
2314 | * calculate and apply the time delta from the last recorded state | |
2315 | * of the spu context. | |
2316 | */ | |
2317 | if (ctx->spu && ctx->stats.util_state == state) { | |
2318 | ktime_get_ts(&ts); | |
2319 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2320 | } | |
e9f8a0b6 | 2321 | |
27ec41d3 | 2322 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2323 | } |
2324 | ||
2325 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2326 | { | |
2327 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2328 | ||
2329 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2330 | slb_flts += (ctx->spu->stats.slb_flt - | |
2331 | ctx->stats.slb_flt_base); | |
2332 | } | |
2333 | ||
2334 | return slb_flts; | |
2335 | } | |
2336 | ||
2337 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2338 | { | |
2339 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2340 | ||
2341 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2342 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2343 | ctx->stats.class2_intr_base); | |
2344 | } | |
2345 | ||
2346 | return class2_intrs; | |
2347 | } | |
2348 | ||
2349 | ||
2350 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2351 | { | |
2352 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2353 | int ret; |
2354 | ||
2355 | ret = spu_acquire(ctx); | |
2356 | if (ret) | |
2357 | return ret; | |
e9f8a0b6 | 2358 | |
e9f8a0b6 CH |
2359 | seq_printf(s, "%s %llu %llu %llu %llu " |
2360 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2361 | ctx_state_names[ctx->stats.util_state], |
2362 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2363 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2364 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2365 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2366 | ctx->stats.vol_ctx_switch, |
2367 | ctx->stats.invol_ctx_switch, | |
2368 | spufs_slb_flts(ctx), | |
2369 | ctx->stats.hash_flt, | |
2370 | ctx->stats.min_flt, | |
2371 | ctx->stats.maj_flt, | |
2372 | spufs_class2_intrs(ctx), | |
2373 | ctx->stats.libassist); | |
2374 | spu_release(ctx); | |
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2379 | { | |
2380 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2381 | } | |
2382 | ||
2383 | static const struct file_operations spufs_stat_fops = { | |
2384 | .open = spufs_stat_open, | |
2385 | .read = seq_read, | |
2386 | .llseek = seq_lseek, | |
2387 | .release = single_release, | |
2388 | }; | |
2389 | ||
5158e9b5 CH |
2390 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2391 | { | |
2392 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2393 | SWITCH_LOG_BUFSIZE; | |
2394 | } | |
2395 | ||
2396 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2397 | { | |
2398 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2399 | } | |
2400 | ||
2401 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2402 | { | |
2403 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2404 | ||
2405 | /* | |
2406 | * We (ab-)use the mapping_lock here because it serves the similar | |
2407 | * purpose for synchronizing open/close elsewhere. Maybe it should | |
2408 | * be renamed eventually. | |
2409 | */ | |
2410 | mutex_lock(&ctx->mapping_lock); | |
2411 | if (ctx->switch_log) { | |
2412 | spin_lock(&ctx->switch_log->lock); | |
2413 | ctx->switch_log->head = 0; | |
2414 | ctx->switch_log->tail = 0; | |
2415 | spin_unlock(&ctx->switch_log->lock); | |
2416 | } else { | |
2417 | /* | |
2418 | * We allocate the switch log data structures on first open. | |
2419 | * They will never be free because we assume a context will | |
2420 | * be traced until it goes away. | |
2421 | */ | |
2422 | ctx->switch_log = kzalloc(sizeof(struct switch_log) + | |
2423 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), | |
2424 | GFP_KERNEL); | |
2425 | if (!ctx->switch_log) | |
2426 | goto out; | |
2427 | spin_lock_init(&ctx->switch_log->lock); | |
2428 | init_waitqueue_head(&ctx->switch_log->wait); | |
2429 | } | |
2430 | mutex_unlock(&ctx->mapping_lock); | |
2431 | ||
2432 | return 0; | |
2433 | out: | |
2434 | mutex_unlock(&ctx->mapping_lock); | |
2435 | return -ENOMEM; | |
2436 | } | |
2437 | ||
2438 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2439 | { | |
2440 | struct switch_log_entry *p; | |
2441 | ||
2442 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2443 | ||
2444 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2445 | (unsigned int) p->tstamp.tv_sec, | |
2446 | (unsigned int) p->tstamp.tv_nsec, | |
2447 | p->spu_id, | |
2448 | (unsigned int) p->type, | |
2449 | (unsigned int) p->val, | |
2450 | (unsigned long long) p->timebase); | |
2451 | } | |
2452 | ||
2453 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2454 | size_t len, loff_t *ppos) | |
2455 | { | |
2456 | struct inode *inode = file->f_path.dentry->d_inode; | |
2457 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2458 | int error = 0, cnt = 0; | |
2459 | ||
2460 | if (!buf || len < 0) | |
2461 | return -EINVAL; | |
2462 | ||
2463 | while (cnt < len) { | |
2464 | char tbuf[128]; | |
2465 | int width; | |
2466 | ||
2467 | if (file->f_flags & O_NONBLOCK) { | |
2468 | if (spufs_switch_log_used(ctx) <= 0) | |
2469 | return cnt ? cnt : -EAGAIN; | |
2470 | } else { | |
2471 | /* Wait for data in buffer */ | |
2472 | error = wait_event_interruptible(ctx->switch_log->wait, | |
2473 | spufs_switch_log_used(ctx) > 0); | |
2474 | if (error) | |
2475 | break; | |
2476 | } | |
2477 | ||
2478 | spin_lock(&ctx->switch_log->lock); | |
2479 | if (ctx->switch_log->head == ctx->switch_log->tail) { | |
2480 | /* multiple readers race? */ | |
2481 | spin_unlock(&ctx->switch_log->lock); | |
2482 | continue; | |
2483 | } | |
2484 | ||
2485 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); | |
2486 | if (width < len) { | |
2487 | ctx->switch_log->tail = | |
2488 | (ctx->switch_log->tail + 1) % | |
2489 | SWITCH_LOG_BUFSIZE; | |
2490 | } | |
2491 | ||
2492 | spin_unlock(&ctx->switch_log->lock); | |
2493 | ||
2494 | /* | |
2495 | * If the record is greater than space available return | |
2496 | * partial buffer (so far) | |
2497 | */ | |
2498 | if (width >= len) | |
2499 | break; | |
2500 | ||
2501 | error = copy_to_user(buf + cnt, tbuf, width); | |
2502 | if (error) | |
2503 | break; | |
2504 | cnt += width; | |
2505 | } | |
2506 | ||
2507 | return cnt == 0 ? error : cnt; | |
2508 | } | |
2509 | ||
2510 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2511 | { | |
2512 | struct inode *inode = file->f_path.dentry->d_inode; | |
2513 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2514 | unsigned int mask = 0; | |
2515 | ||
2516 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2517 | ||
2518 | if (spufs_switch_log_used(ctx) > 0) | |
2519 | mask |= POLLIN; | |
2520 | ||
2521 | return mask; | |
2522 | } | |
2523 | ||
2524 | static const struct file_operations spufs_switch_log_fops = { | |
2525 | .owner = THIS_MODULE, | |
2526 | .open = spufs_switch_log_open, | |
2527 | .read = spufs_switch_log_read, | |
2528 | .poll = spufs_switch_log_poll, | |
2529 | }; | |
2530 | ||
2531 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, | |
2532 | u32 type, u32 val) | |
2533 | { | |
2534 | if (!ctx->switch_log) | |
2535 | return; | |
2536 | ||
2537 | spin_lock(&ctx->switch_log->lock); | |
2538 | if (spufs_switch_log_avail(ctx) > 1) { | |
2539 | struct switch_log_entry *p; | |
2540 | ||
2541 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2542 | ktime_get_ts(&p->tstamp); | |
2543 | p->timebase = get_tb(); | |
2544 | p->spu_id = spu ? spu->number : -1; | |
2545 | p->type = type; | |
2546 | p->val = val; | |
2547 | ||
2548 | ctx->switch_log->head = | |
2549 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2550 | } | |
2551 | spin_unlock(&ctx->switch_log->lock); | |
2552 | ||
2553 | wake_up(&ctx->switch_log->wait); | |
2554 | } | |
e9f8a0b6 | 2555 | |
67207b96 | 2556 | struct tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2557 | { "capabilities", &spufs_caps_fops, 0444, }, |
67207b96 | 2558 | { "mem", &spufs_mem_fops, 0666, }, |
8b3d6663 | 2559 | { "regs", &spufs_regs_fops, 0666, }, |
67207b96 AB |
2560 | { "mbox", &spufs_mbox_fops, 0444, }, |
2561 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2562 | { "wbox", &spufs_wbox_fops, 0222, }, | |
2563 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
2564 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
2565 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
603c4612 JK |
2566 | { "signal1", &spufs_signal1_fops, 0666, }, |
2567 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2568 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2569 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2570 | { "cntl", &spufs_cntl_fops, 0666, }, |
8b3d6663 | 2571 | { "fpcr", &spufs_fpcr_fops, 0666, }, |
b9e3bd77 DGM |
2572 | { "lslr", &spufs_lslr_ops, 0444, }, |
2573 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2574 | { "mss", &spufs_mss_fops, 0666, }, | |
2575 | { "npc", &spufs_npc_ops, 0666, }, | |
2576 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2577 | { "decr", &spufs_decr_ops, 0666, }, |
2578 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2579 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2580 | { "event_status", &spufs_event_status_ops, 0444, }, |
27d5bf2a | 2581 | { "psmap", &spufs_psmap_fops, 0666, }, |
86767277 AB |
2582 | { "phys-id", &spufs_id_ops, 0666, }, |
2583 | { "object-id", &spufs_object_id_ops, 0666, }, | |
69a2f00c DGM |
2584 | { "mbox_info", &spufs_mbox_info_fops, 0444, }, |
2585 | { "ibox_info", &spufs_ibox_info_fops, 0444, }, | |
2586 | { "wbox_info", &spufs_wbox_info_fops, 0444, }, | |
b9e3bd77 DGM |
2587 | { "dma_info", &spufs_dma_info_fops, 0444, }, |
2588 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, | |
476273ad | 2589 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2590 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2591 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2592 | {}, |
2593 | }; | |
5737edd1 MN |
2594 | |
2595 | struct tree_descr spufs_dir_nosched_contents[] = { | |
cbe709c1 | 2596 | { "capabilities", &spufs_caps_fops, 0444, }, |
5737edd1 MN |
2597 | { "mem", &spufs_mem_fops, 0666, }, |
2598 | { "mbox", &spufs_mbox_fops, 0444, }, | |
2599 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2600 | { "wbox", &spufs_wbox_fops, 0222, }, | |
2601 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, | |
2602 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, | |
2603 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, | |
d054b36f JK |
2604 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2605 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2606 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2607 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2608 | { "mss", &spufs_mss_fops, 0666, }, | |
2609 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2610 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2611 | { "npc", &spufs_npc_ops, 0666, }, | |
2612 | { "psmap", &spufs_psmap_fops, 0666, }, | |
2613 | { "phys-id", &spufs_id_ops, 0666, }, | |
2614 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2615 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2616 | { "stat", &spufs_stat_fops, 0444, }, |
5737edd1 MN |
2617 | {}, |
2618 | }; | |
bf1ab978 DGM |
2619 | |
2620 | struct spufs_coredump_reader spufs_coredump_read[] = { | |
4fca9c42 ME |
2621 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2622 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2623 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2624 | { "decr", NULL, spufs_decr_get, 19 }, | |
2625 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2626 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2627 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2628 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2629 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2630 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2631 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2632 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2633 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2634 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2635 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2636 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2637 | { "proxydma_info", __spufs_proxydma_info_read, | |
2638 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2639 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2640 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2641 | { NULL }, |
bf1ab978 | 2642 | }; |