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