Commit | Line | Data |
---|---|---|
67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
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 | ||
b1e2270f NP |
241 | static int |
242 | spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
8b3d6663 | 243 | { |
f1fa74f4 | 244 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
245 | unsigned long address = (unsigned long)vmf->virtual_address; |
246 | unsigned long pfn, offset; | |
247 | ||
f1fa74f4 BH |
248 | #ifdef CONFIG_SPU_FS_64K_LS |
249 | struct spu_state *csa = &ctx->csa; | |
250 | int psize; | |
251 | ||
252 | /* Check what page size we are using */ | |
253 | psize = get_slice_psize(vma->vm_mm, address); | |
254 | ||
255 | /* Some sanity checking */ | |
256 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); | |
257 | ||
258 | /* Wow, 64K, cool, we need to align the address though */ | |
259 | if (csa->use_big_pages) { | |
260 | BUG_ON(vma->vm_start & 0xffff); | |
261 | address &= ~0xfffful; | |
262 | } | |
263 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
8b3d6663 | 264 | |
b1e2270f | 265 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 266 | if (offset >= LS_SIZE) |
b1e2270f | 267 | return VM_FAULT_SIGBUS; |
128b8546 | 268 | |
b1e2270f NP |
269 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
270 | address, offset); | |
f1fa74f4 | 271 | |
c9101bdb | 272 | if (spu_acquire(ctx)) |
b1e2270f | 273 | return VM_FAULT_NOPAGE; |
8b3d6663 | 274 | |
ac91cb8d AB |
275 | if (ctx->state == SPU_STATE_SAVED) { |
276 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
932f535d | 277 | & ~_PAGE_NO_CACHE); |
78bde53e | 278 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d AB |
279 | } else { |
280 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) | |
78bde53e BH |
281 | | _PAGE_NO_CACHE); |
282 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; | |
ac91cb8d | 283 | } |
78bde53e | 284 | vm_insert_pfn(vma, address, pfn); |
8b3d6663 | 285 | |
78bde53e | 286 | spu_release(ctx); |
8b3d6663 | 287 | |
b1e2270f | 288 | return VM_FAULT_NOPAGE; |
8b3d6663 AB |
289 | } |
290 | ||
a352894d BH |
291 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
292 | unsigned long address, | |
293 | void *buf, int len, int write) | |
294 | { | |
295 | struct spu_context *ctx = vma->vm_file->private_data; | |
296 | unsigned long offset = address - vma->vm_start; | |
297 | char *local_store; | |
298 | ||
299 | if (write && !(vma->vm_flags & VM_WRITE)) | |
300 | return -EACCES; | |
301 | if (spu_acquire(ctx)) | |
302 | return -EINTR; | |
303 | if ((offset + len) > vma->vm_end) | |
304 | len = vma->vm_end - offset; | |
305 | local_store = ctx->ops->get_ls(ctx); | |
306 | if (write) | |
307 | memcpy_toio(local_store + offset, buf, len); | |
308 | else | |
309 | memcpy_fromio(buf, local_store + offset, len); | |
310 | spu_release(ctx); | |
311 | return len; | |
312 | } | |
78bde53e | 313 | |
8b3d6663 | 314 | static struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 315 | .fault = spufs_mem_mmap_fault, |
a352894d | 316 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
317 | }; |
318 | ||
f1fa74f4 | 319 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 320 | { |
f1fa74f4 BH |
321 | #ifdef CONFIG_SPU_FS_64K_LS |
322 | struct spu_context *ctx = file->private_data; | |
323 | struct spu_state *csa = &ctx->csa; | |
324 | ||
325 | /* Sanity check VMA alignment */ | |
326 | if (csa->use_big_pages) { | |
327 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," | |
328 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, | |
329 | vma->vm_pgoff); | |
330 | if (vma->vm_start & 0xffff) | |
331 | return -EINVAL; | |
332 | if (vma->vm_pgoff & 0xf) | |
333 | return -EINVAL; | |
334 | } | |
335 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
336 | ||
8b3d6663 AB |
337 | if (!(vma->vm_flags & VM_SHARED)) |
338 | return -EINVAL; | |
67207b96 | 339 | |
78bde53e | 340 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
8b3d6663 AB |
341 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
342 | | _PAGE_NO_CACHE); | |
343 | ||
344 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
345 | return 0; |
346 | } | |
347 | ||
f1fa74f4 | 348 | #ifdef CONFIG_SPU_FS_64K_LS |
1238819a SS |
349 | static unsigned long spufs_get_unmapped_area(struct file *file, |
350 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
351 | unsigned long flags) | |
f1fa74f4 BH |
352 | { |
353 | struct spu_context *ctx = file->private_data; | |
354 | struct spu_state *csa = &ctx->csa; | |
355 | ||
356 | /* If not using big pages, fallback to normal MM g_u_a */ | |
357 | if (!csa->use_big_pages) | |
358 | return current->mm->get_unmapped_area(file, addr, len, | |
359 | pgoff, flags); | |
360 | ||
361 | /* Else, try to obtain a 64K pages slice */ | |
362 | return slice_get_unmapped_area(addr, len, flags, | |
363 | MMU_PAGE_64K, 1, 0); | |
364 | } | |
365 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
366 | ||
5dfe4c96 | 367 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
368 | .open = spufs_mem_open, |
369 | .release = spufs_mem_release, | |
370 | .read = spufs_mem_read, | |
371 | .write = spufs_mem_write, | |
372 | .llseek = generic_file_llseek, | |
373 | .mmap = spufs_mem_mmap, | |
f1fa74f4 BH |
374 | #ifdef CONFIG_SPU_FS_64K_LS |
375 | .get_unmapped_area = spufs_get_unmapped_area, | |
376 | #endif | |
8b3d6663 AB |
377 | }; |
378 | ||
b1e2270f NP |
379 | static int spufs_ps_fault(struct vm_area_struct *vma, |
380 | struct vm_fault *vmf, | |
78bde53e | 381 | unsigned long ps_offs, |
27d5bf2a | 382 | unsigned long ps_size) |
6df10a82 | 383 | { |
6df10a82 | 384 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 385 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
eebead5b | 386 | int ret = 0; |
6df10a82 | 387 | |
b1e2270f | 388 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 389 | |
27d5bf2a | 390 | if (offset >= ps_size) |
b1e2270f | 391 | return VM_FAULT_SIGBUS; |
6df10a82 | 392 | |
60657263 JK |
393 | if (fatal_signal_pending(current)) |
394 | return VM_FAULT_SIGBUS; | |
395 | ||
d5883137 JK |
396 | /* |
397 | * Because we release the mmap_sem, the context may be destroyed while | |
398 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
399 | * in the meantime. | |
400 | */ | |
401 | get_spu_context(ctx); | |
402 | ||
33bfd7a7 AB |
403 | /* |
404 | * We have to wait for context to be loaded before we have | |
405 | * pages to hand out to the user, but we don't want to wait | |
406 | * with the mmap_sem held. | |
407 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 408 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 409 | * hanged. |
78bde53e | 410 | */ |
c9101bdb | 411 | if (spu_acquire(ctx)) |
d5883137 | 412 | goto refault; |
c9101bdb | 413 | |
33bfd7a7 AB |
414 | if (ctx->state == SPU_STATE_SAVED) { |
415 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 416 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
eebead5b | 417 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 418 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 419 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
420 | } else { |
421 | area = ctx->spu->problem_phys + ps_offs; | |
b1e2270f NP |
422 | vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, |
423 | (area + offset) >> PAGE_SHIFT); | |
424 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); | |
33bfd7a7 | 425 | } |
6df10a82 | 426 | |
eebead5b CH |
427 | if (!ret) |
428 | spu_release(ctx); | |
d5883137 JK |
429 | |
430 | refault: | |
431 | put_spu_context(ctx); | |
b1e2270f | 432 | return VM_FAULT_NOPAGE; |
6df10a82 MN |
433 | } |
434 | ||
27d5bf2a | 435 | #if SPUFS_MMAP_4K |
b1e2270f NP |
436 | static int spufs_cntl_mmap_fault(struct vm_area_struct *vma, |
437 | struct vm_fault *vmf) | |
6df10a82 | 438 | { |
87ff6090 | 439 | return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
440 | } |
441 | ||
442 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { | |
b1e2270f | 443 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
444 | }; |
445 | ||
446 | /* | |
447 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
448 | */ |
449 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
450 | { | |
451 | if (!(vma->vm_flags & VM_SHARED)) | |
452 | return -EINVAL; | |
453 | ||
78bde53e | 454 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 455 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 456 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
457 | |
458 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
459 | return 0; | |
460 | } | |
27d5bf2a BH |
461 | #else /* SPUFS_MMAP_4K */ |
462 | #define spufs_cntl_mmap NULL | |
463 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 464 | |
197b1a82 | 465 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 466 | { |
e1dbff2b | 467 | struct spu_context *ctx = data; |
c9101bdb | 468 | int ret; |
6df10a82 | 469 | |
c9101bdb CH |
470 | ret = spu_acquire(ctx); |
471 | if (ret) | |
472 | return ret; | |
197b1a82 | 473 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
474 | spu_release(ctx); |
475 | ||
197b1a82 | 476 | return 0; |
6df10a82 MN |
477 | } |
478 | ||
197b1a82 | 479 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 480 | { |
e1dbff2b | 481 | struct spu_context *ctx = data; |
c9101bdb | 482 | int ret; |
e1dbff2b | 483 | |
c9101bdb CH |
484 | ret = spu_acquire(ctx); |
485 | if (ret) | |
486 | return ret; | |
e1dbff2b AB |
487 | ctx->ops->runcntl_write(ctx, val); |
488 | spu_release(ctx); | |
197b1a82 CH |
489 | |
490 | return 0; | |
6df10a82 MN |
491 | } |
492 | ||
e1dbff2b | 493 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 494 | { |
e1dbff2b AB |
495 | struct spufs_inode_info *i = SPUFS_I(inode); |
496 | struct spu_context *ctx = i->i_ctx; | |
497 | ||
47d3a5fa | 498 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 499 | file->private_data = ctx; |
43c2bbd9 CH |
500 | if (!i->i_openers++) |
501 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 502 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 503 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 504 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
505 | } |
506 | ||
43c2bbd9 CH |
507 | static int |
508 | spufs_cntl_release(struct inode *inode, struct file *file) | |
509 | { | |
510 | struct spufs_inode_info *i = SPUFS_I(inode); | |
511 | struct spu_context *ctx = i->i_ctx; | |
512 | ||
74bedc4d | 513 | simple_attr_release(inode, file); |
43c2bbd9 | 514 | |
47d3a5fa | 515 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
516 | if (!--i->i_openers) |
517 | ctx->cntl = NULL; | |
47d3a5fa | 518 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
519 | return 0; |
520 | } | |
521 | ||
5dfe4c96 | 522 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 523 | .open = spufs_cntl_open, |
43c2bbd9 | 524 | .release = spufs_cntl_release, |
8b88b099 CH |
525 | .read = simple_attr_read, |
526 | .write = simple_attr_write, | |
6df10a82 | 527 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
528 | }; |
529 | ||
8b3d6663 AB |
530 | static int |
531 | spufs_regs_open(struct inode *inode, struct file *file) | |
532 | { | |
533 | struct spufs_inode_info *i = SPUFS_I(inode); | |
534 | file->private_data = i->i_ctx; | |
535 | return 0; | |
536 | } | |
537 | ||
bf1ab978 DGM |
538 | static ssize_t |
539 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
540 | size_t size, loff_t *pos) | |
541 | { | |
542 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
543 | return simple_read_from_buffer(buffer, size, pos, | |
544 | lscsa->gprs, sizeof lscsa->gprs); | |
545 | } | |
546 | ||
8b3d6663 AB |
547 | static ssize_t |
548 | spufs_regs_read(struct file *file, char __user *buffer, | |
549 | size_t size, loff_t *pos) | |
550 | { | |
8b3d6663 | 551 | int ret; |
bf1ab978 | 552 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 553 | |
f027faa2 JK |
554 | /* pre-check for file position: if we'd return EOF, there's no point |
555 | * causing a deschedule */ | |
556 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
557 | return 0; | |
558 | ||
c9101bdb CH |
559 | ret = spu_acquire_saved(ctx); |
560 | if (ret) | |
561 | return ret; | |
bf1ab978 | 562 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 563 | spu_release_saved(ctx); |
8b3d6663 AB |
564 | return ret; |
565 | } | |
566 | ||
567 | static ssize_t | |
568 | spufs_regs_write(struct file *file, const char __user *buffer, | |
569 | size_t size, loff_t *pos) | |
570 | { | |
571 | struct spu_context *ctx = file->private_data; | |
572 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
573 | int ret; | |
574 | ||
575 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); | |
576 | if (size <= 0) | |
577 | return -EFBIG; | |
578 | *pos += size; | |
579 | ||
c9101bdb CH |
580 | ret = spu_acquire_saved(ctx); |
581 | if (ret) | |
582 | return ret; | |
8b3d6663 AB |
583 | |
584 | ret = copy_from_user(lscsa->gprs + *pos - size, | |
585 | buffer, size) ? -EFAULT : size; | |
586 | ||
27b1ea09 | 587 | spu_release_saved(ctx); |
8b3d6663 AB |
588 | return ret; |
589 | } | |
590 | ||
5dfe4c96 | 591 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
592 | .open = spufs_regs_open, |
593 | .read = spufs_regs_read, | |
594 | .write = spufs_regs_write, | |
67207b96 AB |
595 | .llseek = generic_file_llseek, |
596 | }; | |
597 | ||
bf1ab978 DGM |
598 | static ssize_t |
599 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
600 | size_t size, loff_t * pos) | |
601 | { | |
602 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
603 | return simple_read_from_buffer(buffer, size, pos, | |
604 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
605 | } | |
606 | ||
8b3d6663 AB |
607 | static ssize_t |
608 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
609 | size_t size, loff_t * pos) | |
610 | { | |
8b3d6663 | 611 | int ret; |
bf1ab978 | 612 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 613 | |
c9101bdb CH |
614 | ret = spu_acquire_saved(ctx); |
615 | if (ret) | |
616 | return ret; | |
bf1ab978 | 617 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 618 | spu_release_saved(ctx); |
8b3d6663 AB |
619 | return ret; |
620 | } | |
621 | ||
622 | static ssize_t | |
623 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
624 | size_t size, loff_t * pos) | |
625 | { | |
626 | struct spu_context *ctx = file->private_data; | |
627 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
628 | int ret; | |
629 | ||
630 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); | |
631 | if (size <= 0) | |
632 | return -EFBIG; | |
8b3d6663 | 633 | |
c9101bdb CH |
634 | ret = spu_acquire_saved(ctx); |
635 | if (ret) | |
636 | return ret; | |
8b3d6663 | 637 | |
c9101bdb | 638 | *pos += size; |
8b3d6663 AB |
639 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
640 | buffer, size) ? -EFAULT : size; | |
641 | ||
27b1ea09 | 642 | spu_release_saved(ctx); |
8b3d6663 AB |
643 | return ret; |
644 | } | |
645 | ||
5dfe4c96 | 646 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
647 | .open = spufs_regs_open, |
648 | .read = spufs_fpcr_read, | |
649 | .write = spufs_fpcr_write, | |
650 | .llseek = generic_file_llseek, | |
651 | }; | |
652 | ||
67207b96 AB |
653 | /* generic open function for all pipe-like files */ |
654 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
655 | { | |
656 | struct spufs_inode_info *i = SPUFS_I(inode); | |
657 | file->private_data = i->i_ctx; | |
658 | ||
659 | return nonseekable_open(inode, file); | |
660 | } | |
661 | ||
cdcc89bb AB |
662 | /* |
663 | * Read as many bytes from the mailbox as possible, until | |
664 | * one of the conditions becomes true: | |
665 | * | |
666 | * - no more data available in the mailbox | |
667 | * - end of the user provided buffer | |
668 | * - end of the mapped area | |
669 | */ | |
67207b96 AB |
670 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
671 | size_t len, loff_t *pos) | |
672 | { | |
8b3d6663 | 673 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
674 | u32 mbox_data, __user *udata; |
675 | ssize_t count; | |
67207b96 AB |
676 | |
677 | if (len < 4) | |
678 | return -EINVAL; | |
679 | ||
cdcc89bb AB |
680 | if (!access_ok(VERIFY_WRITE, buf, len)) |
681 | return -EFAULT; | |
682 | ||
683 | udata = (void __user *)buf; | |
684 | ||
c9101bdb CH |
685 | count = spu_acquire(ctx); |
686 | if (count) | |
687 | return count; | |
688 | ||
274cef5e | 689 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
690 | int ret; |
691 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
692 | if (ret == 0) | |
693 | break; | |
694 | ||
695 | /* | |
696 | * at the end of the mapped area, we can fault | |
697 | * but still need to return the data we have | |
698 | * read successfully so far. | |
699 | */ | |
700 | ret = __put_user(mbox_data, udata); | |
701 | if (ret) { | |
702 | if (!count) | |
703 | count = -EFAULT; | |
704 | break; | |
705 | } | |
706 | } | |
8b3d6663 | 707 | spu_release(ctx); |
67207b96 | 708 | |
cdcc89bb AB |
709 | if (!count) |
710 | count = -EAGAIN; | |
67207b96 | 711 | |
cdcc89bb | 712 | return count; |
67207b96 AB |
713 | } |
714 | ||
5dfe4c96 | 715 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
716 | .open = spufs_pipe_open, |
717 | .read = spufs_mbox_read, | |
718 | }; | |
719 | ||
720 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
721 | size_t len, loff_t *pos) | |
722 | { | |
8b3d6663 | 723 | struct spu_context *ctx = file->private_data; |
c9101bdb | 724 | ssize_t ret; |
67207b96 AB |
725 | u32 mbox_stat; |
726 | ||
727 | if (len < 4) | |
728 | return -EINVAL; | |
729 | ||
c9101bdb CH |
730 | ret = spu_acquire(ctx); |
731 | if (ret) | |
732 | return ret; | |
8b3d6663 AB |
733 | |
734 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
735 | ||
736 | spu_release(ctx); | |
67207b96 AB |
737 | |
738 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
739 | return -EFAULT; | |
740 | ||
741 | return 4; | |
742 | } | |
743 | ||
5dfe4c96 | 744 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
745 | .open = spufs_pipe_open, |
746 | .read = spufs_mbox_stat_read, | |
747 | }; | |
748 | ||
749 | /* low-level ibox access function */ | |
8b3d6663 | 750 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 751 | { |
8b3d6663 AB |
752 | return ctx->ops->ibox_read(ctx, data); |
753 | } | |
67207b96 | 754 | |
8b3d6663 AB |
755 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
756 | { | |
757 | struct spu_context *ctx = file->private_data; | |
67207b96 | 758 | |
8b3d6663 | 759 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 760 | } |
67207b96 | 761 | |
8b3d6663 AB |
762 | /* interrupt-level ibox callback function. */ |
763 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 764 | { |
8b3d6663 AB |
765 | struct spu_context *ctx = spu->ctx; |
766 | ||
e65c2f6f LB |
767 | if (!ctx) |
768 | return; | |
769 | ||
8b3d6663 AB |
770 | wake_up_all(&ctx->ibox_wq); |
771 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
772 | } |
773 | ||
cdcc89bb AB |
774 | /* |
775 | * Read as many bytes from the interrupt mailbox as possible, until | |
776 | * one of the conditions becomes true: | |
777 | * | |
778 | * - no more data available in the mailbox | |
779 | * - end of the user provided buffer | |
780 | * - end of the mapped area | |
781 | * | |
782 | * If the file is opened without O_NONBLOCK, we wait here until | |
783 | * any data is available, but return when we have been able to | |
784 | * read something. | |
785 | */ | |
67207b96 AB |
786 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
787 | size_t len, loff_t *pos) | |
788 | { | |
8b3d6663 | 789 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
790 | u32 ibox_data, __user *udata; |
791 | ssize_t count; | |
67207b96 AB |
792 | |
793 | if (len < 4) | |
794 | return -EINVAL; | |
795 | ||
cdcc89bb AB |
796 | if (!access_ok(VERIFY_WRITE, buf, len)) |
797 | return -EFAULT; | |
798 | ||
799 | udata = (void __user *)buf; | |
800 | ||
c9101bdb CH |
801 | count = spu_acquire(ctx); |
802 | if (count) | |
eebead5b | 803 | goto out; |
67207b96 | 804 | |
cdcc89bb AB |
805 | /* wait only for the first element */ |
806 | count = 0; | |
67207b96 | 807 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 808 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 809 | count = -EAGAIN; |
eebead5b CH |
810 | goto out_unlock; |
811 | } | |
67207b96 | 812 | } else { |
cdcc89bb | 813 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
814 | if (count) |
815 | goto out; | |
67207b96 AB |
816 | } |
817 | ||
cdcc89bb AB |
818 | /* if we can't write at all, return -EFAULT */ |
819 | count = __put_user(ibox_data, udata); | |
820 | if (count) | |
eebead5b | 821 | goto out_unlock; |
8b3d6663 | 822 | |
cdcc89bb AB |
823 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
824 | int ret; | |
825 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
826 | if (ret == 0) | |
827 | break; | |
828 | /* | |
829 | * at the end of the mapped area, we can fault | |
830 | * but still need to return the data we have | |
831 | * read successfully so far. | |
832 | */ | |
833 | ret = __put_user(ibox_data, udata); | |
834 | if (ret) | |
835 | break; | |
836 | } | |
67207b96 | 837 | |
eebead5b | 838 | out_unlock: |
cdcc89bb | 839 | spu_release(ctx); |
eebead5b | 840 | out: |
cdcc89bb | 841 | return count; |
67207b96 AB |
842 | } |
843 | ||
844 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
845 | { | |
8b3d6663 | 846 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
847 | unsigned int mask; |
848 | ||
8b3d6663 | 849 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 850 | |
c9101bdb CH |
851 | /* |
852 | * For now keep this uninterruptible and also ignore the rule | |
853 | * that poll should not sleep. Will be fixed later. | |
854 | */ | |
855 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
856 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
857 | spu_release(ctx); | |
67207b96 AB |
858 | |
859 | return mask; | |
860 | } | |
861 | ||
5dfe4c96 | 862 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
863 | .open = spufs_pipe_open, |
864 | .read = spufs_ibox_read, | |
865 | .poll = spufs_ibox_poll, | |
866 | .fasync = spufs_ibox_fasync, | |
867 | }; | |
868 | ||
869 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
870 | size_t len, loff_t *pos) | |
871 | { | |
8b3d6663 | 872 | struct spu_context *ctx = file->private_data; |
c9101bdb | 873 | ssize_t ret; |
67207b96 AB |
874 | u32 ibox_stat; |
875 | ||
876 | if (len < 4) | |
877 | return -EINVAL; | |
878 | ||
c9101bdb CH |
879 | ret = spu_acquire(ctx); |
880 | if (ret) | |
881 | return ret; | |
8b3d6663 AB |
882 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
883 | spu_release(ctx); | |
67207b96 AB |
884 | |
885 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
886 | return -EFAULT; | |
887 | ||
888 | return 4; | |
889 | } | |
890 | ||
5dfe4c96 | 891 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
892 | .open = spufs_pipe_open, |
893 | .read = spufs_ibox_stat_read, | |
894 | }; | |
895 | ||
896 | /* low-level mailbox write */ | |
8b3d6663 | 897 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 898 | { |
8b3d6663 AB |
899 | return ctx->ops->wbox_write(ctx, data); |
900 | } | |
67207b96 | 901 | |
8b3d6663 AB |
902 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
903 | { | |
904 | struct spu_context *ctx = file->private_data; | |
905 | int ret; | |
67207b96 | 906 | |
8b3d6663 | 907 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 908 | |
67207b96 AB |
909 | return ret; |
910 | } | |
67207b96 | 911 | |
8b3d6663 AB |
912 | /* interrupt-level wbox callback function. */ |
913 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 914 | { |
8b3d6663 AB |
915 | struct spu_context *ctx = spu->ctx; |
916 | ||
e65c2f6f LB |
917 | if (!ctx) |
918 | return; | |
919 | ||
8b3d6663 AB |
920 | wake_up_all(&ctx->wbox_wq); |
921 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
922 | } |
923 | ||
cdcc89bb AB |
924 | /* |
925 | * Write as many bytes to the interrupt mailbox as possible, until | |
926 | * one of the conditions becomes true: | |
927 | * | |
928 | * - the mailbox is full | |
929 | * - end of the user provided buffer | |
930 | * - end of the mapped area | |
931 | * | |
932 | * If the file is opened without O_NONBLOCK, we wait here until | |
933 | * space is availabyl, but return when we have been able to | |
934 | * write something. | |
935 | */ | |
67207b96 AB |
936 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
937 | size_t len, loff_t *pos) | |
938 | { | |
8b3d6663 | 939 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
940 | u32 wbox_data, __user *udata; |
941 | ssize_t count; | |
67207b96 AB |
942 | |
943 | if (len < 4) | |
944 | return -EINVAL; | |
945 | ||
cdcc89bb AB |
946 | udata = (void __user *)buf; |
947 | if (!access_ok(VERIFY_READ, buf, len)) | |
948 | return -EFAULT; | |
949 | ||
950 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
951 | return -EFAULT; |
952 | ||
c9101bdb CH |
953 | count = spu_acquire(ctx); |
954 | if (count) | |
eebead5b | 955 | goto out; |
8b3d6663 | 956 | |
cdcc89bb AB |
957 | /* |
958 | * make sure we can at least write one element, by waiting | |
959 | * in case of !O_NONBLOCK | |
960 | */ | |
961 | count = 0; | |
67207b96 | 962 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 963 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 964 | count = -EAGAIN; |
eebead5b CH |
965 | goto out_unlock; |
966 | } | |
67207b96 | 967 | } else { |
cdcc89bb | 968 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
969 | if (count) |
970 | goto out; | |
67207b96 AB |
971 | } |
972 | ||
8b3d6663 | 973 | |
96de0e25 | 974 | /* write as much as possible */ |
cdcc89bb AB |
975 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
976 | int ret; | |
977 | ret = __get_user(wbox_data, udata); | |
978 | if (ret) | |
979 | break; | |
980 | ||
981 | ret = spu_wbox_write(ctx, wbox_data); | |
982 | if (ret == 0) | |
983 | break; | |
984 | } | |
985 | ||
eebead5b | 986 | out_unlock: |
cdcc89bb | 987 | spu_release(ctx); |
eebead5b | 988 | out: |
cdcc89bb | 989 | return count; |
67207b96 AB |
990 | } |
991 | ||
992 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
993 | { | |
8b3d6663 | 994 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
995 | unsigned int mask; |
996 | ||
8b3d6663 | 997 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 998 | |
c9101bdb CH |
999 | /* |
1000 | * For now keep this uninterruptible and also ignore the rule | |
1001 | * that poll should not sleep. Will be fixed later. | |
1002 | */ | |
1003 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
1004 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
1005 | spu_release(ctx); | |
67207b96 AB |
1006 | |
1007 | return mask; | |
1008 | } | |
1009 | ||
5dfe4c96 | 1010 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
1011 | .open = spufs_pipe_open, |
1012 | .write = spufs_wbox_write, | |
1013 | .poll = spufs_wbox_poll, | |
1014 | .fasync = spufs_wbox_fasync, | |
1015 | }; | |
1016 | ||
1017 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
1018 | size_t len, loff_t *pos) | |
1019 | { | |
8b3d6663 | 1020 | struct spu_context *ctx = file->private_data; |
c9101bdb | 1021 | ssize_t ret; |
67207b96 AB |
1022 | u32 wbox_stat; |
1023 | ||
1024 | if (len < 4) | |
1025 | return -EINVAL; | |
1026 | ||
c9101bdb CH |
1027 | ret = spu_acquire(ctx); |
1028 | if (ret) | |
1029 | return ret; | |
8b3d6663 AB |
1030 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
1031 | spu_release(ctx); | |
67207b96 AB |
1032 | |
1033 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
1034 | return -EFAULT; | |
1035 | ||
1036 | return 4; | |
1037 | } | |
1038 | ||
5dfe4c96 | 1039 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
1040 | .open = spufs_pipe_open, |
1041 | .read = spufs_wbox_stat_read, | |
1042 | }; | |
1043 | ||
6df10a82 MN |
1044 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
1045 | { | |
1046 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1047 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1048 | |
47d3a5fa | 1049 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1050 | file->private_data = ctx; |
43c2bbd9 CH |
1051 | if (!i->i_openers++) |
1052 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 1053 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1054 | return nonseekable_open(inode, file); |
1055 | } | |
1056 | ||
43c2bbd9 CH |
1057 | static int |
1058 | spufs_signal1_release(struct inode *inode, struct file *file) | |
1059 | { | |
1060 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1061 | struct spu_context *ctx = i->i_ctx; | |
1062 | ||
47d3a5fa | 1063 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1064 | if (!--i->i_openers) |
1065 | ctx->signal1 = NULL; | |
47d3a5fa | 1066 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1067 | return 0; |
1068 | } | |
1069 | ||
bf1ab978 | 1070 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1071 | size_t len, loff_t *pos) |
1072 | { | |
17f88ceb | 1073 | int ret = 0; |
67207b96 AB |
1074 | u32 data; |
1075 | ||
67207b96 AB |
1076 | if (len < 4) |
1077 | return -EINVAL; | |
1078 | ||
17f88ceb DGM |
1079 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1080 | data = ctx->csa.spu_chnldata_RW[3]; | |
1081 | ret = 4; | |
1082 | } | |
8b3d6663 | 1083 | |
17f88ceb DGM |
1084 | if (!ret) |
1085 | goto out; | |
1086 | ||
67207b96 AB |
1087 | if (copy_to_user(buf, &data, 4)) |
1088 | return -EFAULT; | |
1089 | ||
17f88ceb DGM |
1090 | out: |
1091 | return ret; | |
67207b96 AB |
1092 | } |
1093 | ||
bf1ab978 DGM |
1094 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1095 | size_t len, loff_t *pos) | |
1096 | { | |
1097 | int ret; | |
1098 | struct spu_context *ctx = file->private_data; | |
1099 | ||
c9101bdb CH |
1100 | ret = spu_acquire_saved(ctx); |
1101 | if (ret) | |
1102 | return ret; | |
bf1ab978 | 1103 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1104 | spu_release_saved(ctx); |
bf1ab978 DGM |
1105 | |
1106 | return ret; | |
1107 | } | |
1108 | ||
67207b96 AB |
1109 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1110 | size_t len, loff_t *pos) | |
1111 | { | |
1112 | struct spu_context *ctx; | |
c9101bdb | 1113 | ssize_t ret; |
67207b96 AB |
1114 | u32 data; |
1115 | ||
1116 | ctx = file->private_data; | |
67207b96 AB |
1117 | |
1118 | if (len < 4) | |
1119 | return -EINVAL; | |
1120 | ||
1121 | if (copy_from_user(&data, buf, 4)) | |
1122 | return -EFAULT; | |
1123 | ||
c9101bdb CH |
1124 | ret = spu_acquire(ctx); |
1125 | if (ret) | |
1126 | return ret; | |
8b3d6663 AB |
1127 | ctx->ops->signal1_write(ctx, data); |
1128 | spu_release(ctx); | |
67207b96 AB |
1129 | |
1130 | return 4; | |
1131 | } | |
1132 | ||
b1e2270f NP |
1133 | static int |
1134 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1135 | { |
87ff6090 JK |
1136 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1137 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1138 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1139 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1140 | * signal 1 and 2 area | |
1141 | */ | |
87ff6090 | 1142 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1143 | #else |
1144 | #error unsupported page size | |
1145 | #endif | |
6df10a82 MN |
1146 | } |
1147 | ||
1148 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { | |
b1e2270f | 1149 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1150 | }; |
1151 | ||
1152 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1153 | { | |
1154 | if (!(vma->vm_flags & VM_SHARED)) | |
1155 | return -EINVAL; | |
1156 | ||
78bde53e | 1157 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1158 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1159 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1160 | |
1161 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1162 | return 0; | |
1163 | } | |
6df10a82 | 1164 | |
5dfe4c96 | 1165 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1166 | .open = spufs_signal1_open, |
43c2bbd9 | 1167 | .release = spufs_signal1_release, |
67207b96 AB |
1168 | .read = spufs_signal1_read, |
1169 | .write = spufs_signal1_write, | |
6df10a82 | 1170 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
1171 | }; |
1172 | ||
d054b36f JK |
1173 | static const struct file_operations spufs_signal1_nosched_fops = { |
1174 | .open = spufs_signal1_open, | |
1175 | .release = spufs_signal1_release, | |
1176 | .write = spufs_signal1_write, | |
1177 | .mmap = spufs_signal1_mmap, | |
1178 | }; | |
1179 | ||
6df10a82 MN |
1180 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1181 | { | |
1182 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1183 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1184 | |
47d3a5fa | 1185 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1186 | file->private_data = ctx; |
43c2bbd9 CH |
1187 | if (!i->i_openers++) |
1188 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1189 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1190 | return nonseekable_open(inode, file); |
1191 | } | |
1192 | ||
43c2bbd9 CH |
1193 | static int |
1194 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1195 | { | |
1196 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1197 | struct spu_context *ctx = i->i_ctx; | |
1198 | ||
47d3a5fa | 1199 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1200 | if (!--i->i_openers) |
1201 | ctx->signal2 = NULL; | |
47d3a5fa | 1202 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1203 | return 0; |
1204 | } | |
1205 | ||
bf1ab978 | 1206 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1207 | size_t len, loff_t *pos) |
1208 | { | |
17f88ceb | 1209 | int ret = 0; |
67207b96 AB |
1210 | u32 data; |
1211 | ||
67207b96 AB |
1212 | if (len < 4) |
1213 | return -EINVAL; | |
1214 | ||
17f88ceb DGM |
1215 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1216 | data = ctx->csa.spu_chnldata_RW[4]; | |
1217 | ret = 4; | |
1218 | } | |
8b3d6663 | 1219 | |
17f88ceb DGM |
1220 | if (!ret) |
1221 | goto out; | |
1222 | ||
67207b96 AB |
1223 | if (copy_to_user(buf, &data, 4)) |
1224 | return -EFAULT; | |
1225 | ||
17f88ceb | 1226 | out: |
bf1ab978 DGM |
1227 | return ret; |
1228 | } | |
1229 | ||
1230 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1231 | size_t len, loff_t *pos) | |
1232 | { | |
1233 | struct spu_context *ctx = file->private_data; | |
1234 | int ret; | |
1235 | ||
c9101bdb CH |
1236 | ret = spu_acquire_saved(ctx); |
1237 | if (ret) | |
1238 | return ret; | |
bf1ab978 | 1239 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1240 | spu_release_saved(ctx); |
bf1ab978 DGM |
1241 | |
1242 | return ret; | |
67207b96 AB |
1243 | } |
1244 | ||
1245 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1246 | size_t len, loff_t *pos) | |
1247 | { | |
1248 | struct spu_context *ctx; | |
c9101bdb | 1249 | ssize_t ret; |
67207b96 AB |
1250 | u32 data; |
1251 | ||
1252 | ctx = file->private_data; | |
67207b96 AB |
1253 | |
1254 | if (len < 4) | |
1255 | return -EINVAL; | |
1256 | ||
1257 | if (copy_from_user(&data, buf, 4)) | |
1258 | return -EFAULT; | |
1259 | ||
c9101bdb CH |
1260 | ret = spu_acquire(ctx); |
1261 | if (ret) | |
1262 | return ret; | |
8b3d6663 AB |
1263 | ctx->ops->signal2_write(ctx, data); |
1264 | spu_release(ctx); | |
67207b96 AB |
1265 | |
1266 | return 4; | |
1267 | } | |
1268 | ||
27d5bf2a | 1269 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1270 | static int |
1271 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1272 | { |
87ff6090 JK |
1273 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1274 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1275 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1276 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1277 | * signal 1 and 2 area | |
1278 | */ | |
87ff6090 | 1279 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1280 | #else |
1281 | #error unsupported page size | |
1282 | #endif | |
6df10a82 MN |
1283 | } |
1284 | ||
1285 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { | |
b1e2270f | 1286 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1287 | }; |
1288 | ||
1289 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1290 | { | |
1291 | if (!(vma->vm_flags & VM_SHARED)) | |
1292 | return -EINVAL; | |
1293 | ||
78bde53e | 1294 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1295 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1296 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1297 | |
1298 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1299 | return 0; | |
1300 | } | |
27d5bf2a BH |
1301 | #else /* SPUFS_MMAP_4K */ |
1302 | #define spufs_signal2_mmap NULL | |
1303 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1304 | |
5dfe4c96 | 1305 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1306 | .open = spufs_signal2_open, |
43c2bbd9 | 1307 | .release = spufs_signal2_release, |
67207b96 AB |
1308 | .read = spufs_signal2_read, |
1309 | .write = spufs_signal2_write, | |
6df10a82 | 1310 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
1311 | }; |
1312 | ||
d054b36f JK |
1313 | static const struct file_operations spufs_signal2_nosched_fops = { |
1314 | .open = spufs_signal2_open, | |
1315 | .release = spufs_signal2_release, | |
1316 | .write = spufs_signal2_write, | |
1317 | .mmap = spufs_signal2_mmap, | |
1318 | }; | |
1319 | ||
104f0cc2 ME |
1320 | /* |
1321 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1322 | * work of acquiring (or not) the SPU context before calling through | |
1323 | * to the actual get routine. The set routine is called directly. | |
1324 | */ | |
1325 | #define SPU_ATTR_NOACQUIRE 0 | |
1326 | #define SPU_ATTR_ACQUIRE 1 | |
1327 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1328 | ||
1329 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1330 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1331 | { \ |
1332 | struct spu_context *ctx = data; \ | |
c9101bdb | 1333 | int ret = 0; \ |
104f0cc2 ME |
1334 | \ |
1335 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1336 | ret = spu_acquire(ctx); \ |
1337 | if (ret) \ | |
1338 | return ret; \ | |
197b1a82 | 1339 | *val = __get(ctx); \ |
104f0cc2 ME |
1340 | spu_release(ctx); \ |
1341 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1342 | ret = spu_acquire_saved(ctx); \ |
1343 | if (ret) \ | |
1344 | return ret; \ | |
197b1a82 | 1345 | *val = __get(ctx); \ |
104f0cc2 ME |
1346 | spu_release_saved(ctx); \ |
1347 | } else \ | |
197b1a82 | 1348 | *val = __get(ctx); \ |
104f0cc2 | 1349 | \ |
197b1a82 | 1350 | return 0; \ |
104f0cc2 | 1351 | } \ |
197b1a82 | 1352 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1353 | |
197b1a82 | 1354 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1355 | { |
1356 | struct spu_context *ctx = data; | |
c9101bdb | 1357 | int ret; |
67207b96 | 1358 | |
c9101bdb CH |
1359 | ret = spu_acquire(ctx); |
1360 | if (ret) | |
1361 | return ret; | |
8b3d6663 AB |
1362 | ctx->ops->signal1_type_set(ctx, val); |
1363 | spu_release(ctx); | |
197b1a82 CH |
1364 | |
1365 | return 0; | |
67207b96 AB |
1366 | } |
1367 | ||
104f0cc2 | 1368 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1369 | { |
bf1ab978 DGM |
1370 | return ctx->ops->signal1_type_get(ctx); |
1371 | } | |
104f0cc2 | 1372 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1373 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1374 | |
67207b96 | 1375 | |
197b1a82 | 1376 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1377 | { |
1378 | struct spu_context *ctx = data; | |
c9101bdb | 1379 | int ret; |
67207b96 | 1380 | |
c9101bdb CH |
1381 | ret = spu_acquire(ctx); |
1382 | if (ret) | |
1383 | return ret; | |
8b3d6663 AB |
1384 | ctx->ops->signal2_type_set(ctx, val); |
1385 | spu_release(ctx); | |
197b1a82 CH |
1386 | |
1387 | return 0; | |
67207b96 AB |
1388 | } |
1389 | ||
104f0cc2 | 1390 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1391 | { |
bf1ab978 DGM |
1392 | return ctx->ops->signal2_type_get(ctx); |
1393 | } | |
104f0cc2 | 1394 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1395 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1396 | |
27d5bf2a | 1397 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1398 | static int |
1399 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1400 | { |
87ff6090 | 1401 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b | 1402 | } |
1403 | ||
1404 | static struct vm_operations_struct spufs_mss_mmap_vmops = { | |
b1e2270f | 1405 | .fault = spufs_mss_mmap_fault, |
d9379c4b | 1406 | }; |
1407 | ||
1408 | /* | |
1409 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b | 1410 | */ |
1411 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1412 | { | |
1413 | if (!(vma->vm_flags & VM_SHARED)) | |
1414 | return -EINVAL; | |
1415 | ||
78bde53e | 1416 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
d9379c4b | 1417 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1418 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
d9379c4b | 1419 | |
1420 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1421 | return 0; | |
1422 | } | |
27d5bf2a BH |
1423 | #else /* SPUFS_MMAP_4K */ |
1424 | #define spufs_mss_mmap NULL | |
1425 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b | 1426 | |
1427 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1428 | { | |
1429 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1430 | struct spu_context *ctx = i->i_ctx; |
d9379c4b | 1431 | |
1432 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1433 | |
47d3a5fa | 1434 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1435 | if (!i->i_openers++) |
1436 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1437 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b | 1438 | return nonseekable_open(inode, file); |
1439 | } | |
1440 | ||
43c2bbd9 CH |
1441 | static int |
1442 | spufs_mss_release(struct inode *inode, struct file *file) | |
1443 | { | |
1444 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1445 | struct spu_context *ctx = i->i_ctx; | |
1446 | ||
47d3a5fa | 1447 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1448 | if (!--i->i_openers) |
1449 | ctx->mss = NULL; | |
47d3a5fa | 1450 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1451 | return 0; |
1452 | } | |
1453 | ||
5dfe4c96 | 1454 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1455 | .open = spufs_mss_open, |
43c2bbd9 | 1456 | .release = spufs_mss_release, |
d9379c4b | 1457 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1458 | }; |
1459 | ||
b1e2270f NP |
1460 | static int |
1461 | spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
27d5bf2a | 1462 | { |
87ff6090 | 1463 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1464 | } |
1465 | ||
1466 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { | |
b1e2270f | 1467 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1468 | }; |
1469 | ||
1470 | /* | |
1471 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1472 | */ | |
1473 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1474 | { | |
1475 | if (!(vma->vm_flags & VM_SHARED)) | |
1476 | return -EINVAL; | |
1477 | ||
78bde53e | 1478 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
27d5bf2a BH |
1479 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
1480 | | _PAGE_NO_CACHE | _PAGE_GUARDED); | |
1481 | ||
1482 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1487 | { | |
1488 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1489 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1490 | |
47d3a5fa | 1491 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1492 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1493 | if (!i->i_openers++) |
1494 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1495 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1496 | return nonseekable_open(inode, file); |
1497 | } | |
1498 | ||
43c2bbd9 CH |
1499 | static int |
1500 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1501 | { | |
1502 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1503 | struct spu_context *ctx = i->i_ctx; | |
1504 | ||
47d3a5fa | 1505 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1506 | if (!--i->i_openers) |
1507 | ctx->psmap = NULL; | |
47d3a5fa | 1508 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1509 | return 0; |
1510 | } | |
1511 | ||
5dfe4c96 | 1512 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1513 | .open = spufs_psmap_open, |
43c2bbd9 | 1514 | .release = spufs_psmap_release, |
27d5bf2a | 1515 | .mmap = spufs_psmap_mmap, |
d9379c4b | 1516 | }; |
1517 | ||
1518 | ||
27d5bf2a | 1519 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1520 | static int |
1521 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1522 | { |
87ff6090 | 1523 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1524 | } |
1525 | ||
1526 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { | |
b1e2270f | 1527 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1528 | }; |
1529 | ||
1530 | /* | |
1531 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1532 | */ |
1533 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1534 | { | |
1535 | if (!(vma->vm_flags & VM_SHARED)) | |
1536 | return -EINVAL; | |
1537 | ||
78bde53e | 1538 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
6df10a82 | 1539 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
23cc7701 | 1540 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
6df10a82 MN |
1541 | |
1542 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1543 | return 0; | |
1544 | } | |
27d5bf2a BH |
1545 | #else /* SPUFS_MMAP_4K */ |
1546 | #define spufs_mfc_mmap NULL | |
1547 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1548 | |
1549 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1550 | { | |
1551 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1552 | struct spu_context *ctx = i->i_ctx; | |
1553 | ||
1554 | /* we don't want to deal with DMA into other processes */ | |
1555 | if (ctx->owner != current->mm) | |
1556 | return -EINVAL; | |
1557 | ||
1558 | if (atomic_read(&inode->i_count) != 1) | |
1559 | return -EBUSY; | |
1560 | ||
47d3a5fa | 1561 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1562 | file->private_data = ctx; |
43c2bbd9 CH |
1563 | if (!i->i_openers++) |
1564 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1565 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1566 | return nonseekable_open(inode, file); |
1567 | } | |
1568 | ||
43c2bbd9 CH |
1569 | static int |
1570 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1571 | { | |
1572 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1573 | struct spu_context *ctx = i->i_ctx; | |
1574 | ||
47d3a5fa | 1575 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1576 | if (!--i->i_openers) |
1577 | ctx->mfc = NULL; | |
47d3a5fa | 1578 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1579 | return 0; |
1580 | } | |
1581 | ||
a33a7d73 AB |
1582 | /* interrupt-level mfc callback function. */ |
1583 | void spufs_mfc_callback(struct spu *spu) | |
1584 | { | |
1585 | struct spu_context *ctx = spu->ctx; | |
1586 | ||
e65c2f6f LB |
1587 | if (!ctx) |
1588 | return; | |
1589 | ||
a33a7d73 AB |
1590 | wake_up_all(&ctx->mfc_wq); |
1591 | ||
e48b1b45 | 1592 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1593 | if (ctx->mfc_fasync) { |
1594 | u32 free_elements, tagstatus; | |
1595 | unsigned int mask; | |
1596 | ||
1597 | /* no need for spu_acquire in interrupt context */ | |
1598 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1599 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1600 | ||
1601 | mask = 0; | |
1602 | if (free_elements & 0xffff) | |
1603 | mask |= POLLOUT; | |
1604 | if (tagstatus & ctx->tagwait) | |
1605 | mask |= POLLIN; | |
1606 | ||
1607 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1612 | { | |
1613 | /* See if there is one tag group is complete */ | |
1614 | /* FIXME we need locking around tagwait */ | |
1615 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1616 | ctx->tagwait &= ~*status; | |
1617 | if (*status) | |
1618 | return 1; | |
1619 | ||
1620 | /* enable interrupt waiting for any tag group, | |
1621 | may silently fail if interrupts are already enabled */ | |
1622 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1623 | return 0; | |
1624 | } | |
1625 | ||
1626 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1627 | size_t size, loff_t *pos) | |
1628 | { | |
1629 | struct spu_context *ctx = file->private_data; | |
1630 | int ret = -EINVAL; | |
1631 | u32 status; | |
1632 | ||
1633 | if (size != 4) | |
1634 | goto out; | |
1635 | ||
c9101bdb CH |
1636 | ret = spu_acquire(ctx); |
1637 | if (ret) | |
1638 | return ret; | |
1639 | ||
1640 | ret = -EINVAL; | |
a33a7d73 AB |
1641 | if (file->f_flags & O_NONBLOCK) { |
1642 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1643 | if (!(status & ctx->tagwait)) | |
1644 | ret = -EAGAIN; | |
1645 | else | |
c9101bdb | 1646 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1647 | ctx->tagwait &= ~status; |
1648 | } else { | |
1649 | ret = spufs_wait(ctx->mfc_wq, | |
1650 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1651 | if (ret) |
1652 | goto out; | |
a33a7d73 AB |
1653 | } |
1654 | spu_release(ctx); | |
1655 | ||
a33a7d73 AB |
1656 | ret = 4; |
1657 | if (copy_to_user(buffer, &status, 4)) | |
1658 | ret = -EFAULT; | |
1659 | ||
1660 | out: | |
1661 | return ret; | |
1662 | } | |
1663 | ||
1664 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1665 | { | |
1666 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, | |
1667 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); | |
1668 | ||
1669 | switch (cmd->cmd) { | |
1670 | case MFC_PUT_CMD: | |
1671 | case MFC_PUTF_CMD: | |
1672 | case MFC_PUTB_CMD: | |
1673 | case MFC_GET_CMD: | |
1674 | case MFC_GETF_CMD: | |
1675 | case MFC_GETB_CMD: | |
1676 | break; | |
1677 | default: | |
1678 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1679 | return -EIO; | |
1680 | } | |
1681 | ||
1682 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
1683 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", | |
1684 | cmd->ea, cmd->lsa); | |
1685 | return -EIO; | |
1686 | } | |
1687 | ||
1688 | switch (cmd->size & 0xf) { | |
1689 | case 1: | |
1690 | break; | |
1691 | case 2: | |
1692 | if (cmd->lsa & 1) | |
1693 | goto error; | |
1694 | break; | |
1695 | case 4: | |
1696 | if (cmd->lsa & 3) | |
1697 | goto error; | |
1698 | break; | |
1699 | case 8: | |
1700 | if (cmd->lsa & 7) | |
1701 | goto error; | |
1702 | break; | |
1703 | case 0: | |
1704 | if (cmd->lsa & 15) | |
1705 | goto error; | |
1706 | break; | |
1707 | error: | |
1708 | default: | |
1709 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1710 | cmd->lsa & 0xf, cmd->size); | |
1711 | return -EIO; | |
1712 | } | |
1713 | ||
1714 | if (cmd->size > 16 * 1024) { | |
1715 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1716 | return -EIO; | |
1717 | } | |
1718 | ||
1719 | if (cmd->tag & 0xfff0) { | |
1720 | /* we reserve the higher tag numbers for kernel use */ | |
1721 | pr_debug("invalid DMA tag\n"); | |
1722 | return -EIO; | |
1723 | } | |
1724 | ||
1725 | if (cmd->class) { | |
1726 | /* not supported in this version */ | |
1727 | pr_debug("invalid DMA class\n"); | |
1728 | return -EIO; | |
1729 | } | |
1730 | ||
1731 | return 0; | |
1732 | } | |
1733 | ||
1734 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1735 | struct mfc_dma_command cmd, | |
1736 | int *error) | |
1737 | { | |
1738 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1739 | if (*error == -EAGAIN) { | |
1740 | /* wait for any tag group to complete | |
1741 | so we have space for the new command */ | |
1742 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1743 | /* try again, because the queue might be | |
1744 | empty again */ | |
1745 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1746 | if (*error == -EAGAIN) | |
1747 | return 0; | |
1748 | } | |
1749 | return 1; | |
1750 | } | |
1751 | ||
1752 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1753 | size_t size, loff_t *pos) | |
1754 | { | |
1755 | struct spu_context *ctx = file->private_data; | |
1756 | struct mfc_dma_command cmd; | |
1757 | int ret = -EINVAL; | |
1758 | ||
1759 | if (size != sizeof cmd) | |
1760 | goto out; | |
1761 | ||
1762 | ret = -EFAULT; | |
1763 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1764 | goto out; | |
1765 | ||
1766 | ret = spufs_check_valid_dma(&cmd); | |
1767 | if (ret) | |
1768 | goto out; | |
1769 | ||
c9101bdb CH |
1770 | ret = spu_acquire(ctx); |
1771 | if (ret) | |
1772 | goto out; | |
1773 | ||
33bfd7a7 | 1774 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1775 | if (ret) |
1776 | goto out; | |
1777 | ||
a33a7d73 AB |
1778 | if (file->f_flags & O_NONBLOCK) { |
1779 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1780 | } else { | |
1781 | int status; | |
1782 | ret = spufs_wait(ctx->mfc_wq, | |
1783 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1784 | if (ret) |
1785 | goto out; | |
a33a7d73 AB |
1786 | if (status) |
1787 | ret = status; | |
1788 | } | |
a33a7d73 AB |
1789 | |
1790 | if (ret) | |
933b0e35 | 1791 | goto out_unlock; |
a33a7d73 AB |
1792 | |
1793 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1794 | ret = size; |
a33a7d73 | 1795 | |
933b0e35 KA |
1796 | out_unlock: |
1797 | spu_release(ctx); | |
a33a7d73 AB |
1798 | out: |
1799 | return ret; | |
1800 | } | |
1801 | ||
1802 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1803 | { | |
1804 | struct spu_context *ctx = file->private_data; | |
1805 | u32 free_elements, tagstatus; | |
1806 | unsigned int mask; | |
1807 | ||
933b0e35 KA |
1808 | poll_wait(file, &ctx->mfc_wq, wait); |
1809 | ||
c9101bdb CH |
1810 | /* |
1811 | * For now keep this uninterruptible and also ignore the rule | |
1812 | * that poll should not sleep. Will be fixed later. | |
1813 | */ | |
1814 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1815 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1816 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1817 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1818 | spu_release(ctx); | |
1819 | ||
a33a7d73 AB |
1820 | mask = 0; |
1821 | if (free_elements & 0xffff) | |
1822 | mask |= POLLOUT | POLLWRNORM; | |
1823 | if (tagstatus & ctx->tagwait) | |
1824 | mask |= POLLIN | POLLRDNORM; | |
1825 | ||
e48b1b45 | 1826 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1827 | free_elements, tagstatus, ctx->tagwait); |
1828 | ||
1829 | return mask; | |
1830 | } | |
1831 | ||
73b6af8a | 1832 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1833 | { |
1834 | struct spu_context *ctx = file->private_data; | |
1835 | int ret; | |
1836 | ||
c9101bdb CH |
1837 | ret = spu_acquire(ctx); |
1838 | if (ret) | |
eebead5b | 1839 | goto out; |
a33a7d73 AB |
1840 | #if 0 |
1841 | /* this currently hangs */ | |
1842 | ret = spufs_wait(ctx->mfc_wq, | |
1843 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1844 | if (ret) | |
1845 | goto out; | |
1846 | ret = spufs_wait(ctx->mfc_wq, | |
1847 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1848 | if (ret) |
1849 | goto out; | |
a33a7d73 AB |
1850 | #else |
1851 | ret = 0; | |
1852 | #endif | |
1853 | spu_release(ctx); | |
eebead5b | 1854 | out: |
a33a7d73 AB |
1855 | return ret; |
1856 | } | |
1857 | ||
1858 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1859 | int datasync) | |
1860 | { | |
73b6af8a | 1861 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1862 | } |
1863 | ||
1864 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1865 | { | |
1866 | struct spu_context *ctx = file->private_data; | |
1867 | ||
1868 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1869 | } | |
1870 | ||
5dfe4c96 | 1871 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1872 | .open = spufs_mfc_open, |
43c2bbd9 | 1873 | .release = spufs_mfc_release, |
a33a7d73 AB |
1874 | .read = spufs_mfc_read, |
1875 | .write = spufs_mfc_write, | |
1876 | .poll = spufs_mfc_poll, | |
1877 | .flush = spufs_mfc_flush, | |
1878 | .fsync = spufs_mfc_fsync, | |
1879 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1880 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1881 | }; |
1882 | ||
197b1a82 | 1883 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1884 | { |
1885 | struct spu_context *ctx = data; | |
c9101bdb CH |
1886 | int ret; |
1887 | ||
1888 | ret = spu_acquire(ctx); | |
1889 | if (ret) | |
1890 | return ret; | |
8b3d6663 AB |
1891 | ctx->ops->npc_write(ctx, val); |
1892 | spu_release(ctx); | |
197b1a82 CH |
1893 | |
1894 | return 0; | |
67207b96 AB |
1895 | } |
1896 | ||
104f0cc2 | 1897 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1898 | { |
1899 | return ctx->ops->npc_read(ctx); | |
1900 | } | |
104f0cc2 ME |
1901 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1902 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1903 | |
197b1a82 | 1904 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1905 | { |
1906 | struct spu_context *ctx = data; | |
1907 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1908 | int ret; |
1909 | ||
1910 | ret = spu_acquire_saved(ctx); | |
1911 | if (ret) | |
1912 | return ret; | |
8b3d6663 | 1913 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1914 | spu_release_saved(ctx); |
197b1a82 CH |
1915 | |
1916 | return 0; | |
8b3d6663 AB |
1917 | } |
1918 | ||
104f0cc2 | 1919 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1920 | { |
8b3d6663 | 1921 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1922 | return lscsa->decr.slot[0]; |
1923 | } | |
104f0cc2 ME |
1924 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1925 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1926 | |
197b1a82 | 1927 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1928 | { |
1929 | struct spu_context *ctx = data; | |
c9101bdb CH |
1930 | int ret; |
1931 | ||
1932 | ret = spu_acquire_saved(ctx); | |
1933 | if (ret) | |
1934 | return ret; | |
d40a01d4 MN |
1935 | if (val) |
1936 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1937 | else | |
1938 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1939 | spu_release_saved(ctx); |
197b1a82 CH |
1940 | |
1941 | return 0; | |
8b3d6663 AB |
1942 | } |
1943 | ||
104f0cc2 | 1944 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1945 | { |
d40a01d4 MN |
1946 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1947 | return SPU_DECR_STATUS_RUNNING; | |
1948 | else | |
1949 | return 0; | |
bf1ab978 | 1950 | } |
104f0cc2 ME |
1951 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1952 | spufs_decr_status_set, "0x%llx\n", | |
1953 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1954 | |
197b1a82 | 1955 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1956 | { |
1957 | struct spu_context *ctx = data; | |
1958 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1959 | int ret; |
1960 | ||
1961 | ret = spu_acquire_saved(ctx); | |
1962 | if (ret) | |
1963 | return ret; | |
8b3d6663 | 1964 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1965 | spu_release_saved(ctx); |
197b1a82 CH |
1966 | |
1967 | return 0; | |
8b3d6663 AB |
1968 | } |
1969 | ||
104f0cc2 | 1970 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1971 | { |
8b3d6663 | 1972 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1973 | return lscsa->event_mask.slot[0]; |
1974 | } | |
1975 | ||
104f0cc2 ME |
1976 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1977 | spufs_event_mask_set, "0x%llx\n", | |
1978 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1979 | |
104f0cc2 | 1980 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1981 | { |
b9e3bd77 | 1982 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1983 | u64 stat; |
b9e3bd77 DGM |
1984 | stat = state->spu_chnlcnt_RW[0]; |
1985 | if (stat) | |
bf1ab978 DGM |
1986 | return state->spu_chnldata_RW[0]; |
1987 | return 0; | |
1988 | } | |
104f0cc2 ME |
1989 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1990 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1991 | |
197b1a82 | 1992 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1993 | { |
1994 | struct spu_context *ctx = data; | |
1995 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1996 | int ret; |
1997 | ||
1998 | ret = spu_acquire_saved(ctx); | |
1999 | if (ret) | |
2000 | return ret; | |
8b3d6663 | 2001 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 2002 | spu_release_saved(ctx); |
197b1a82 CH |
2003 | |
2004 | return 0; | |
8b3d6663 AB |
2005 | } |
2006 | ||
104f0cc2 | 2007 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 2008 | { |
8b3d6663 | 2009 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 2010 | return lscsa->srr0.slot[0]; |
8b3d6663 | 2011 | } |
104f0cc2 ME |
2012 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
2013 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 2014 | |
104f0cc2 | 2015 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 2016 | { |
7b1a7014 | 2017 | u64 num; |
2018 | ||
7b1a7014 | 2019 | if (ctx->state == SPU_STATE_RUNNABLE) |
2020 | num = ctx->spu->number; | |
2021 | else | |
2022 | num = (unsigned int)-1; | |
7b1a7014 | 2023 | |
2024 | return num; | |
2025 | } | |
104f0cc2 ME |
2026 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
2027 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 2028 | |
104f0cc2 | 2029 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
2030 | { |
2031 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 2032 | return ctx->object_id; |
bf1ab978 DGM |
2033 | } |
2034 | ||
197b1a82 | 2035 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
2036 | { |
2037 | struct spu_context *ctx = data; | |
2038 | ctx->object_id = id; | |
197b1a82 CH |
2039 | |
2040 | return 0; | |
86767277 AB |
2041 | } |
2042 | ||
104f0cc2 ME |
2043 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
2044 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 2045 | |
104f0cc2 | 2046 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 2047 | { |
bf1ab978 DGM |
2048 | return ctx->csa.priv2.spu_lslr_RW; |
2049 | } | |
104f0cc2 ME |
2050 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
2051 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
2052 | |
2053 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2054 | { | |
2055 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2056 | struct spu_context *ctx = i->i_ctx; | |
2057 | file->private_data = ctx; | |
2058 | return 0; | |
2059 | } | |
2060 | ||
cbe709c1 BH |
2061 | static int spufs_caps_show(struct seq_file *s, void *private) |
2062 | { | |
2063 | struct spu_context *ctx = s->private; | |
2064 | ||
2065 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2066 | seq_puts(s, "sched\n"); | |
2067 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2068 | seq_puts(s, "step\n"); | |
2069 | return 0; | |
2070 | } | |
2071 | ||
2072 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2073 | { | |
2074 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2075 | } | |
2076 | ||
2077 | static const struct file_operations spufs_caps_fops = { | |
2078 | .open = spufs_caps_open, | |
2079 | .read = seq_read, | |
2080 | .llseek = seq_lseek, | |
2081 | .release = single_release, | |
2082 | }; | |
2083 | ||
bf1ab978 DGM |
2084 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2085 | char __user *buf, size_t len, loff_t *pos) | |
2086 | { | |
bf1ab978 DGM |
2087 | u32 data; |
2088 | ||
cbea9238 JK |
2089 | /* EOF if there's no entry in the mbox */ |
2090 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2091 | return 0; | |
2092 | ||
2093 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2094 | |
2095 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2096 | } | |
2097 | ||
69a2f00c DGM |
2098 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2099 | size_t len, loff_t *pos) | |
2100 | { | |
bf1ab978 | 2101 | int ret; |
69a2f00c | 2102 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2103 | |
2104 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2105 | return -EFAULT; | |
2106 | ||
c9101bdb CH |
2107 | ret = spu_acquire_saved(ctx); |
2108 | if (ret) | |
2109 | return ret; | |
69a2f00c | 2110 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2111 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2112 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2113 | spu_release_saved(ctx); |
69a2f00c | 2114 | |
bf1ab978 | 2115 | return ret; |
69a2f00c DGM |
2116 | } |
2117 | ||
5dfe4c96 | 2118 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2119 | .open = spufs_info_open, |
2120 | .read = spufs_mbox_info_read, | |
2121 | .llseek = generic_file_llseek, | |
2122 | }; | |
2123 | ||
bf1ab978 DGM |
2124 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2125 | char __user *buf, size_t len, loff_t *pos) | |
2126 | { | |
bf1ab978 DGM |
2127 | u32 data; |
2128 | ||
cbea9238 JK |
2129 | /* EOF if there's no entry in the ibox */ |
2130 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2131 | return 0; | |
2132 | ||
2133 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2134 | |
2135 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2136 | } | |
2137 | ||
69a2f00c DGM |
2138 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2139 | size_t len, loff_t *pos) | |
2140 | { | |
2141 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2142 | int ret; |
69a2f00c DGM |
2143 | |
2144 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2145 | return -EFAULT; | |
2146 | ||
c9101bdb CH |
2147 | ret = spu_acquire_saved(ctx); |
2148 | if (ret) | |
2149 | return ret; | |
69a2f00c | 2150 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2151 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2152 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2153 | spu_release_saved(ctx); |
69a2f00c | 2154 | |
bf1ab978 | 2155 | return ret; |
69a2f00c DGM |
2156 | } |
2157 | ||
5dfe4c96 | 2158 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2159 | .open = spufs_info_open, |
2160 | .read = spufs_ibox_info_read, | |
2161 | .llseek = generic_file_llseek, | |
2162 | }; | |
2163 | ||
bf1ab978 DGM |
2164 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2165 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2166 | { |
69a2f00c DGM |
2167 | int i, cnt; |
2168 | u32 data[4]; | |
2169 | u32 wbox_stat; | |
2170 | ||
bf1ab978 DGM |
2171 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2172 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2173 | for (i = 0; i < cnt; i++) { | |
2174 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2175 | } | |
2176 | ||
2177 | return simple_read_from_buffer(buf, len, pos, &data, | |
2178 | cnt * sizeof(u32)); | |
2179 | } | |
2180 | ||
2181 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2182 | size_t len, loff_t *pos) | |
2183 | { | |
2184 | struct spu_context *ctx = file->private_data; | |
2185 | int ret; | |
2186 | ||
69a2f00c DGM |
2187 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2188 | return -EFAULT; | |
2189 | ||
c9101bdb CH |
2190 | ret = spu_acquire_saved(ctx); |
2191 | if (ret) | |
2192 | return ret; | |
69a2f00c | 2193 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2194 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2195 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2196 | spu_release_saved(ctx); |
69a2f00c | 2197 | |
bf1ab978 | 2198 | return ret; |
69a2f00c DGM |
2199 | } |
2200 | ||
5dfe4c96 | 2201 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2202 | .open = spufs_info_open, |
2203 | .read = spufs_wbox_info_read, | |
2204 | .llseek = generic_file_llseek, | |
2205 | }; | |
2206 | ||
bf1ab978 DGM |
2207 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2208 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2209 | { |
b9e3bd77 DGM |
2210 | struct spu_dma_info info; |
2211 | struct mfc_cq_sr *qp, *spuqp; | |
2212 | int i; | |
2213 | ||
b9e3bd77 DGM |
2214 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2215 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2216 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2217 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2218 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2219 | for (i = 0; i < 16; i++) { | |
2220 | qp = &info.dma_info_command_data[i]; | |
2221 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2222 | ||
2223 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2224 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2225 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2226 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2227 | } | |
b9e3bd77 DGM |
2228 | |
2229 | return simple_read_from_buffer(buf, len, pos, &info, | |
2230 | sizeof info); | |
2231 | } | |
2232 | ||
bf1ab978 DGM |
2233 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2234 | size_t len, loff_t *pos) | |
2235 | { | |
2236 | struct spu_context *ctx = file->private_data; | |
2237 | int ret; | |
2238 | ||
2239 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2240 | return -EFAULT; | |
2241 | ||
c9101bdb CH |
2242 | ret = spu_acquire_saved(ctx); |
2243 | if (ret) | |
2244 | return ret; | |
bf1ab978 DGM |
2245 | spin_lock(&ctx->csa.register_lock); |
2246 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2247 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2248 | spu_release_saved(ctx); |
bf1ab978 DGM |
2249 | |
2250 | return ret; | |
2251 | } | |
2252 | ||
5dfe4c96 | 2253 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2254 | .open = spufs_info_open, |
2255 | .read = spufs_dma_info_read, | |
2256 | }; | |
2257 | ||
bf1ab978 DGM |
2258 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2259 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2260 | { |
b9e3bd77 | 2261 | struct spu_proxydma_info info; |
b9e3bd77 | 2262 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2263 | int ret = sizeof info; |
b9e3bd77 DGM |
2264 | int i; |
2265 | ||
2266 | if (len < ret) | |
2267 | return -EINVAL; | |
2268 | ||
2269 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2270 | return -EFAULT; | |
2271 | ||
b9e3bd77 DGM |
2272 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2273 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2274 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2275 | for (i = 0; i < 8; i++) { | |
2276 | qp = &info.proxydma_info_command_data[i]; | |
2277 | puqp = &ctx->csa.priv2.puq[i]; | |
2278 | ||
2279 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2280 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2281 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2282 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2283 | } | |
bf1ab978 DGM |
2284 | |
2285 | return simple_read_from_buffer(buf, len, pos, &info, | |
2286 | sizeof info); | |
2287 | } | |
2288 | ||
2289 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2290 | size_t len, loff_t *pos) | |
2291 | { | |
2292 | struct spu_context *ctx = file->private_data; | |
2293 | int ret; | |
2294 | ||
c9101bdb CH |
2295 | ret = spu_acquire_saved(ctx); |
2296 | if (ret) | |
2297 | return ret; | |
bf1ab978 DGM |
2298 | spin_lock(&ctx->csa.register_lock); |
2299 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2300 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2301 | spu_release_saved(ctx); |
b9e3bd77 | 2302 | |
b9e3bd77 DGM |
2303 | return ret; |
2304 | } | |
2305 | ||
5dfe4c96 | 2306 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2307 | .open = spufs_info_open, |
2308 | .read = spufs_proxydma_info_read, | |
2309 | }; | |
2310 | ||
476273ad CH |
2311 | static int spufs_show_tid(struct seq_file *s, void *private) |
2312 | { | |
2313 | struct spu_context *ctx = s->private; | |
2314 | ||
2315 | seq_printf(s, "%d\n", ctx->tid); | |
2316 | return 0; | |
2317 | } | |
2318 | ||
2319 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2320 | { | |
2321 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2322 | } | |
2323 | ||
2324 | static const struct file_operations spufs_tid_fops = { | |
2325 | .open = spufs_tid_open, | |
2326 | .read = seq_read, | |
2327 | .llseek = seq_lseek, | |
2328 | .release = single_release, | |
2329 | }; | |
2330 | ||
e9f8a0b6 CH |
2331 | static const char *ctx_state_names[] = { |
2332 | "user", "system", "iowait", "loaded" | |
2333 | }; | |
2334 | ||
2335 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2336 | enum spu_utilization_state state) |
e9f8a0b6 | 2337 | { |
27ec41d3 AD |
2338 | struct timespec ts; |
2339 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2340 | |
27ec41d3 AD |
2341 | /* |
2342 | * In general, utilization statistics are updated by the controlling | |
2343 | * thread as the spu context moves through various well defined | |
2344 | * state transitions, but if the context is lazily loaded its | |
2345 | * utilization statistics are not updated as the controlling thread | |
2346 | * is not tightly coupled with the execution of the spu context. We | |
2347 | * calculate and apply the time delta from the last recorded state | |
2348 | * of the spu context. | |
2349 | */ | |
2350 | if (ctx->spu && ctx->stats.util_state == state) { | |
2351 | ktime_get_ts(&ts); | |
2352 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2353 | } | |
e9f8a0b6 | 2354 | |
27ec41d3 | 2355 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2356 | } |
2357 | ||
2358 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2359 | { | |
2360 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2361 | ||
2362 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2363 | slb_flts += (ctx->spu->stats.slb_flt - | |
2364 | ctx->stats.slb_flt_base); | |
2365 | } | |
2366 | ||
2367 | return slb_flts; | |
2368 | } | |
2369 | ||
2370 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2371 | { | |
2372 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2373 | ||
2374 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2375 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2376 | ctx->stats.class2_intr_base); | |
2377 | } | |
2378 | ||
2379 | return class2_intrs; | |
2380 | } | |
2381 | ||
2382 | ||
2383 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2384 | { | |
2385 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2386 | int ret; |
2387 | ||
2388 | ret = spu_acquire(ctx); | |
2389 | if (ret) | |
2390 | return ret; | |
e9f8a0b6 | 2391 | |
e9f8a0b6 CH |
2392 | seq_printf(s, "%s %llu %llu %llu %llu " |
2393 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2394 | ctx_state_names[ctx->stats.util_state], |
2395 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2396 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2397 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2398 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2399 | ctx->stats.vol_ctx_switch, |
2400 | ctx->stats.invol_ctx_switch, | |
2401 | spufs_slb_flts(ctx), | |
2402 | ctx->stats.hash_flt, | |
2403 | ctx->stats.min_flt, | |
2404 | ctx->stats.maj_flt, | |
2405 | spufs_class2_intrs(ctx), | |
2406 | ctx->stats.libassist); | |
2407 | spu_release(ctx); | |
2408 | return 0; | |
2409 | } | |
2410 | ||
2411 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2412 | { | |
2413 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2414 | } | |
2415 | ||
2416 | static const struct file_operations spufs_stat_fops = { | |
2417 | .open = spufs_stat_open, | |
2418 | .read = seq_read, | |
2419 | .llseek = seq_lseek, | |
2420 | .release = single_release, | |
2421 | }; | |
2422 | ||
5158e9b5 CH |
2423 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2424 | { | |
2425 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2426 | SWITCH_LOG_BUFSIZE; | |
2427 | } | |
2428 | ||
2429 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2430 | { | |
2431 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2432 | } | |
2433 | ||
2434 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2435 | { | |
2436 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2437 | int rc; |
2438 | ||
2439 | rc = spu_acquire(ctx); | |
2440 | if (rc) | |
2441 | return rc; | |
5158e9b5 | 2442 | |
5158e9b5 | 2443 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2444 | rc = -EBUSY; |
2445 | goto out; | |
5158e9b5 | 2446 | } |
f5ed0eb6 | 2447 | |
837ef884 | 2448 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2449 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2450 | GFP_KERNEL); | |
2451 | ||
2452 | if (!ctx->switch_log) { | |
2453 | rc = -ENOMEM; | |
2454 | goto out; | |
2455 | } | |
2456 | ||
837ef884 | 2457 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2458 | init_waitqueue_head(&ctx->switch_log->wait); |
2459 | rc = 0; | |
2460 | ||
2461 | out: | |
2462 | spu_release(ctx); | |
2463 | return rc; | |
2464 | } | |
2465 | ||
2466 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2467 | { | |
2468 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2469 | int rc; | |
2470 | ||
2471 | rc = spu_acquire(ctx); | |
2472 | if (rc) | |
2473 | return rc; | |
2474 | ||
2475 | kfree(ctx->switch_log); | |
2476 | ctx->switch_log = NULL; | |
2477 | spu_release(ctx); | |
5158e9b5 CH |
2478 | |
2479 | return 0; | |
5158e9b5 CH |
2480 | } |
2481 | ||
2482 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2483 | { | |
2484 | struct switch_log_entry *p; | |
2485 | ||
2486 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2487 | ||
2488 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2489 | (unsigned int) p->tstamp.tv_sec, | |
2490 | (unsigned int) p->tstamp.tv_nsec, | |
2491 | p->spu_id, | |
2492 | (unsigned int) p->type, | |
2493 | (unsigned int) p->val, | |
2494 | (unsigned long long) p->timebase); | |
2495 | } | |
2496 | ||
2497 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2498 | size_t len, loff_t *ppos) | |
2499 | { | |
2500 | struct inode *inode = file->f_path.dentry->d_inode; | |
2501 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2502 | int error = 0, cnt = 0; | |
2503 | ||
2504 | if (!buf || len < 0) | |
2505 | return -EINVAL; | |
2506 | ||
f5ed0eb6 JK |
2507 | error = spu_acquire(ctx); |
2508 | if (error) | |
2509 | return error; | |
2510 | ||
5158e9b5 CH |
2511 | while (cnt < len) { |
2512 | char tbuf[128]; | |
2513 | int width; | |
2514 | ||
14f693ee JK |
2515 | if (spufs_switch_log_used(ctx) == 0) { |
2516 | if (cnt > 0) { | |
2517 | /* If there's data ready to go, we can | |
2518 | * just return straight away */ | |
2519 | break; | |
2520 | ||
2521 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2522 | error = -EAGAIN; |
2523 | break; | |
14f693ee JK |
2524 | |
2525 | } else { | |
2526 | /* spufs_wait will drop the mutex and | |
2527 | * re-acquire, but since we're in read(), the | |
2528 | * file cannot be _released (and so | |
2529 | * ctx->switch_log is stable). | |
2530 | */ | |
2531 | error = spufs_wait(ctx->switch_log->wait, | |
2532 | spufs_switch_log_used(ctx) > 0); | |
2533 | ||
2534 | /* On error, spufs_wait returns without the | |
2535 | * state mutex held */ | |
2536 | if (error) | |
2537 | return error; | |
2538 | ||
2539 | /* We may have had entries read from underneath | |
2540 | * us while we dropped the mutex in spufs_wait, | |
2541 | * so re-check */ | |
2542 | if (spufs_switch_log_used(ctx) == 0) | |
2543 | continue; | |
f5ed0eb6 | 2544 | } |
5158e9b5 CH |
2545 | } |
2546 | ||
5158e9b5 | 2547 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2548 | if (width < len) |
5158e9b5 CH |
2549 | ctx->switch_log->tail = |
2550 | (ctx->switch_log->tail + 1) % | |
2551 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2552 | else |
2553 | /* If the record is greater than space available return | |
2554 | * partial buffer (so far) */ | |
5158e9b5 CH |
2555 | break; |
2556 | ||
2557 | error = copy_to_user(buf + cnt, tbuf, width); | |
2558 | if (error) | |
2559 | break; | |
2560 | cnt += width; | |
2561 | } | |
2562 | ||
f5ed0eb6 JK |
2563 | spu_release(ctx); |
2564 | ||
5158e9b5 CH |
2565 | return cnt == 0 ? error : cnt; |
2566 | } | |
2567 | ||
2568 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2569 | { | |
2570 | struct inode *inode = file->f_path.dentry->d_inode; | |
2571 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2572 | unsigned int mask = 0; | |
f5ed0eb6 | 2573 | int rc; |
5158e9b5 CH |
2574 | |
2575 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2576 | ||
f5ed0eb6 JK |
2577 | rc = spu_acquire(ctx); |
2578 | if (rc) | |
2579 | return rc; | |
2580 | ||
5158e9b5 CH |
2581 | if (spufs_switch_log_used(ctx) > 0) |
2582 | mask |= POLLIN; | |
2583 | ||
f5ed0eb6 JK |
2584 | spu_release(ctx); |
2585 | ||
5158e9b5 CH |
2586 | return mask; |
2587 | } | |
2588 | ||
2589 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2590 | .owner = THIS_MODULE, |
2591 | .open = spufs_switch_log_open, | |
2592 | .read = spufs_switch_log_read, | |
2593 | .poll = spufs_switch_log_poll, | |
2594 | .release = spufs_switch_log_release, | |
5158e9b5 CH |
2595 | }; |
2596 | ||
f5ed0eb6 JK |
2597 | /** |
2598 | * Log a context switch event to a switch log reader. | |
2599 | * | |
2600 | * Must be called with ctx->state_mutex held. | |
2601 | */ | |
5158e9b5 CH |
2602 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2603 | u32 type, u32 val) | |
2604 | { | |
2605 | if (!ctx->switch_log) | |
2606 | return; | |
2607 | ||
5158e9b5 CH |
2608 | if (spufs_switch_log_avail(ctx) > 1) { |
2609 | struct switch_log_entry *p; | |
2610 | ||
2611 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2612 | ktime_get_ts(&p->tstamp); | |
2613 | p->timebase = get_tb(); | |
2614 | p->spu_id = spu ? spu->number : -1; | |
2615 | p->type = type; | |
2616 | p->val = val; | |
2617 | ||
2618 | ctx->switch_log->head = | |
2619 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2620 | } | |
5158e9b5 CH |
2621 | |
2622 | wake_up(&ctx->switch_log->wait); | |
2623 | } | |
e9f8a0b6 | 2624 | |
46deed69 LB |
2625 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2626 | { | |
2627 | struct spu_context *ctx = s->private; | |
2628 | u64 mfc_control_RW; | |
2629 | ||
2630 | mutex_lock(&ctx->state_mutex); | |
2631 | if (ctx->spu) { | |
2632 | struct spu *spu = ctx->spu; | |
2633 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2634 | ||
2635 | spin_lock_irq(&spu->register_lock); | |
2636 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2637 | spin_unlock_irq(&spu->register_lock); | |
2638 | } else { | |
2639 | struct spu_state *csa = &ctx->csa; | |
2640 | ||
2641 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2642 | } | |
2643 | ||
2644 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
2645 | " %c %lx %lx %lx %lx %x %x\n", | |
2646 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', | |
2647 | ctx->flags, | |
2648 | ctx->sched_flags, | |
2649 | ctx->prio, | |
2650 | ctx->time_slice, | |
2651 | ctx->spu ? ctx->spu->number : -1, | |
2652 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2653 | ctx->csa.class_0_pending, | |
2654 | ctx->csa.class_0_dar, | |
2655 | ctx->csa.class_1_dsisr, | |
2656 | mfc_control_RW, | |
2657 | ctx->ops->runcntl_read(ctx), | |
2658 | ctx->ops->status_read(ctx)); | |
2659 | ||
2660 | mutex_unlock(&ctx->state_mutex); | |
2661 | ||
2662 | return 0; | |
2663 | } | |
2664 | ||
2665 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2666 | { | |
2667 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2668 | } | |
2669 | ||
2670 | static const struct file_operations spufs_ctx_fops = { | |
2671 | .open = spufs_ctx_open, | |
2672 | .read = seq_read, | |
2673 | .llseek = seq_lseek, | |
2674 | .release = single_release, | |
2675 | }; | |
2676 | ||
23d893f5 | 2677 | struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2678 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2679 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2680 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2681 | { "mbox", &spufs_mbox_fops, 0444, }, |
2682 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2683 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2684 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2685 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2686 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2687 | { "signal1", &spufs_signal1_fops, 0666, }, |
2688 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2689 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2690 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2691 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2692 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2693 | { "lslr", &spufs_lslr_ops, 0444, }, |
2694 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2695 | { "mss", &spufs_mss_fops, 0666, }, | |
2696 | { "npc", &spufs_npc_ops, 0666, }, | |
2697 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2698 | { "decr", &spufs_decr_ops, 0666, }, |
2699 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2700 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2701 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2702 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2703 | { "phys-id", &spufs_id_ops, 0666, }, |
2704 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2705 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2706 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2707 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2708 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2709 | sizeof(struct spu_dma_info), }, | |
2710 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2711 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2712 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2713 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2714 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2715 | {}, |
2716 | }; | |
5737edd1 | 2717 | |
23d893f5 | 2718 | struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2719 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2720 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2721 | { "mbox", &spufs_mbox_fops, 0444, }, |
2722 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2723 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2724 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2725 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2726 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2727 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2728 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2729 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2730 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2731 | { "mss", &spufs_mss_fops, 0666, }, | |
2732 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2733 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2734 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2735 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2736 | { "phys-id", &spufs_id_ops, 0666, }, |
2737 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2738 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2739 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2740 | {}, |
2741 | }; | |
2742 | ||
2743 | struct spufs_tree_descr spufs_dir_debug_contents[] = { | |
46deed69 | 2744 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2745 | {}, |
2746 | }; | |
bf1ab978 DGM |
2747 | |
2748 | struct spufs_coredump_reader spufs_coredump_read[] = { | |
4fca9c42 ME |
2749 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2750 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2751 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2752 | { "decr", NULL, spufs_decr_get, 19 }, | |
2753 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2754 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2755 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2756 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2757 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2758 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2759 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2760 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2761 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2762 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2763 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2764 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2765 | { "proxydma_info", __spufs_proxydma_info_read, | |
2766 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2767 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2768 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2769 | { NULL }, |
bf1ab978 | 2770 | }; |