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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> | |
dfe1e09f | 34 | #include <asm/time.h> |
67207b96 | 35 | #include <asm/spu.h> |
b9e3bd77 | 36 | #include <asm/spu_info.h> |
67207b96 AB |
37 | #include <asm/uaccess.h> |
38 | ||
39 | #include "spufs.h" | |
ae142e0c | 40 | #include "sputrace.h" |
67207b96 | 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 | } \ | |
828c0950 | 150 | static const struct file_operations __fops = { \ |
197b1a82 CH |
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 | 275 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 276 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 277 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 278 | } else { |
64b3d0e8 | 279 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 280 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 281 | } |
78bde53e | 282 | vm_insert_pfn(vma, address, pfn); |
8b3d6663 | 283 | |
78bde53e | 284 | spu_release(ctx); |
8b3d6663 | 285 | |
b1e2270f | 286 | return VM_FAULT_NOPAGE; |
8b3d6663 AB |
287 | } |
288 | ||
a352894d BH |
289 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
290 | unsigned long address, | |
291 | void *buf, int len, int write) | |
292 | { | |
293 | struct spu_context *ctx = vma->vm_file->private_data; | |
294 | unsigned long offset = address - vma->vm_start; | |
295 | char *local_store; | |
296 | ||
297 | if (write && !(vma->vm_flags & VM_WRITE)) | |
298 | return -EACCES; | |
299 | if (spu_acquire(ctx)) | |
300 | return -EINTR; | |
301 | if ((offset + len) > vma->vm_end) | |
302 | len = vma->vm_end - offset; | |
303 | local_store = ctx->ops->get_ls(ctx); | |
304 | if (write) | |
305 | memcpy_toio(local_store + offset, buf, len); | |
306 | else | |
307 | memcpy_fromio(buf, local_store + offset, len); | |
308 | spu_release(ctx); | |
309 | return len; | |
310 | } | |
78bde53e | 311 | |
f0f37e2f | 312 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 313 | .fault = spufs_mem_mmap_fault, |
a352894d | 314 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
315 | }; |
316 | ||
f1fa74f4 | 317 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 318 | { |
f1fa74f4 BH |
319 | #ifdef CONFIG_SPU_FS_64K_LS |
320 | struct spu_context *ctx = file->private_data; | |
321 | struct spu_state *csa = &ctx->csa; | |
322 | ||
323 | /* Sanity check VMA alignment */ | |
324 | if (csa->use_big_pages) { | |
325 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," | |
326 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, | |
327 | vma->vm_pgoff); | |
328 | if (vma->vm_start & 0xffff) | |
329 | return -EINVAL; | |
330 | if (vma->vm_pgoff & 0xf) | |
331 | return -EINVAL; | |
332 | } | |
333 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
334 | ||
8b3d6663 AB |
335 | if (!(vma->vm_flags & VM_SHARED)) |
336 | return -EINVAL; | |
67207b96 | 337 | |
78bde53e | 338 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 339 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
340 | |
341 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
342 | return 0; |
343 | } | |
344 | ||
f1fa74f4 | 345 | #ifdef CONFIG_SPU_FS_64K_LS |
1238819a SS |
346 | static unsigned long spufs_get_unmapped_area(struct file *file, |
347 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
348 | unsigned long flags) | |
f1fa74f4 BH |
349 | { |
350 | struct spu_context *ctx = file->private_data; | |
351 | struct spu_state *csa = &ctx->csa; | |
352 | ||
353 | /* If not using big pages, fallback to normal MM g_u_a */ | |
354 | if (!csa->use_big_pages) | |
355 | return current->mm->get_unmapped_area(file, addr, len, | |
356 | pgoff, flags); | |
357 | ||
358 | /* Else, try to obtain a 64K pages slice */ | |
359 | return slice_get_unmapped_area(addr, len, flags, | |
360 | MMU_PAGE_64K, 1, 0); | |
361 | } | |
362 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
363 | ||
5dfe4c96 | 364 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
365 | .open = spufs_mem_open, |
366 | .release = spufs_mem_release, | |
367 | .read = spufs_mem_read, | |
368 | .write = spufs_mem_write, | |
369 | .llseek = generic_file_llseek, | |
370 | .mmap = spufs_mem_mmap, | |
f1fa74f4 BH |
371 | #ifdef CONFIG_SPU_FS_64K_LS |
372 | .get_unmapped_area = spufs_get_unmapped_area, | |
373 | #endif | |
8b3d6663 AB |
374 | }; |
375 | ||
b1e2270f NP |
376 | static int spufs_ps_fault(struct vm_area_struct *vma, |
377 | struct vm_fault *vmf, | |
78bde53e | 378 | unsigned long ps_offs, |
27d5bf2a | 379 | unsigned long ps_size) |
6df10a82 | 380 | { |
6df10a82 | 381 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 382 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
eebead5b | 383 | int ret = 0; |
6df10a82 | 384 | |
b1e2270f | 385 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 386 | |
27d5bf2a | 387 | if (offset >= ps_size) |
b1e2270f | 388 | return VM_FAULT_SIGBUS; |
6df10a82 | 389 | |
60657263 JK |
390 | if (fatal_signal_pending(current)) |
391 | return VM_FAULT_SIGBUS; | |
392 | ||
d5883137 JK |
393 | /* |
394 | * Because we release the mmap_sem, the context may be destroyed while | |
395 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
396 | * in the meantime. | |
397 | */ | |
398 | get_spu_context(ctx); | |
399 | ||
33bfd7a7 AB |
400 | /* |
401 | * We have to wait for context to be loaded before we have | |
402 | * pages to hand out to the user, but we don't want to wait | |
403 | * with the mmap_sem held. | |
404 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 405 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 406 | * hanged. |
78bde53e | 407 | */ |
c9101bdb | 408 | if (spu_acquire(ctx)) |
d5883137 | 409 | goto refault; |
c9101bdb | 410 | |
33bfd7a7 AB |
411 | if (ctx->state == SPU_STATE_SAVED) { |
412 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 413 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
eebead5b | 414 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 415 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 416 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
417 | } else { |
418 | area = ctx->spu->problem_phys + ps_offs; | |
b1e2270f NP |
419 | vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, |
420 | (area + offset) >> PAGE_SHIFT); | |
421 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); | |
33bfd7a7 | 422 | } |
6df10a82 | 423 | |
eebead5b CH |
424 | if (!ret) |
425 | spu_release(ctx); | |
d5883137 JK |
426 | |
427 | refault: | |
428 | put_spu_context(ctx); | |
b1e2270f | 429 | return VM_FAULT_NOPAGE; |
6df10a82 MN |
430 | } |
431 | ||
27d5bf2a | 432 | #if SPUFS_MMAP_4K |
b1e2270f NP |
433 | static int spufs_cntl_mmap_fault(struct vm_area_struct *vma, |
434 | struct vm_fault *vmf) | |
6df10a82 | 435 | { |
87ff6090 | 436 | return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
437 | } |
438 | ||
f0f37e2f | 439 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 440 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
441 | }; |
442 | ||
443 | /* | |
444 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
445 | */ |
446 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
447 | { | |
448 | if (!(vma->vm_flags & VM_SHARED)) | |
449 | return -EINVAL; | |
450 | ||
78bde53e | 451 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 452 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
453 | |
454 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
455 | return 0; | |
456 | } | |
27d5bf2a BH |
457 | #else /* SPUFS_MMAP_4K */ |
458 | #define spufs_cntl_mmap NULL | |
459 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 460 | |
197b1a82 | 461 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 462 | { |
e1dbff2b | 463 | struct spu_context *ctx = data; |
c9101bdb | 464 | int ret; |
6df10a82 | 465 | |
c9101bdb CH |
466 | ret = spu_acquire(ctx); |
467 | if (ret) | |
468 | return ret; | |
197b1a82 | 469 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
470 | spu_release(ctx); |
471 | ||
197b1a82 | 472 | return 0; |
6df10a82 MN |
473 | } |
474 | ||
197b1a82 | 475 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 476 | { |
e1dbff2b | 477 | struct spu_context *ctx = data; |
c9101bdb | 478 | int ret; |
e1dbff2b | 479 | |
c9101bdb CH |
480 | ret = spu_acquire(ctx); |
481 | if (ret) | |
482 | return ret; | |
e1dbff2b AB |
483 | ctx->ops->runcntl_write(ctx, val); |
484 | spu_release(ctx); | |
197b1a82 CH |
485 | |
486 | return 0; | |
6df10a82 MN |
487 | } |
488 | ||
e1dbff2b | 489 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 490 | { |
e1dbff2b AB |
491 | struct spufs_inode_info *i = SPUFS_I(inode); |
492 | struct spu_context *ctx = i->i_ctx; | |
493 | ||
47d3a5fa | 494 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 495 | file->private_data = ctx; |
43c2bbd9 CH |
496 | if (!i->i_openers++) |
497 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 498 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 499 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 500 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
501 | } |
502 | ||
43c2bbd9 CH |
503 | static int |
504 | spufs_cntl_release(struct inode *inode, struct file *file) | |
505 | { | |
506 | struct spufs_inode_info *i = SPUFS_I(inode); | |
507 | struct spu_context *ctx = i->i_ctx; | |
508 | ||
74bedc4d | 509 | simple_attr_release(inode, file); |
43c2bbd9 | 510 | |
47d3a5fa | 511 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
512 | if (!--i->i_openers) |
513 | ctx->cntl = NULL; | |
47d3a5fa | 514 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
515 | return 0; |
516 | } | |
517 | ||
5dfe4c96 | 518 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 519 | .open = spufs_cntl_open, |
43c2bbd9 | 520 | .release = spufs_cntl_release, |
8b88b099 CH |
521 | .read = simple_attr_read, |
522 | .write = simple_attr_write, | |
6df10a82 | 523 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
524 | }; |
525 | ||
8b3d6663 AB |
526 | static int |
527 | spufs_regs_open(struct inode *inode, struct file *file) | |
528 | { | |
529 | struct spufs_inode_info *i = SPUFS_I(inode); | |
530 | file->private_data = i->i_ctx; | |
531 | return 0; | |
532 | } | |
533 | ||
bf1ab978 DGM |
534 | static ssize_t |
535 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
536 | size_t size, loff_t *pos) | |
537 | { | |
538 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
539 | return simple_read_from_buffer(buffer, size, pos, | |
540 | lscsa->gprs, sizeof lscsa->gprs); | |
541 | } | |
542 | ||
8b3d6663 AB |
543 | static ssize_t |
544 | spufs_regs_read(struct file *file, char __user *buffer, | |
545 | size_t size, loff_t *pos) | |
546 | { | |
8b3d6663 | 547 | int ret; |
bf1ab978 | 548 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 549 | |
f027faa2 JK |
550 | /* pre-check for file position: if we'd return EOF, there's no point |
551 | * causing a deschedule */ | |
552 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
553 | return 0; | |
554 | ||
c9101bdb CH |
555 | ret = spu_acquire_saved(ctx); |
556 | if (ret) | |
557 | return ret; | |
bf1ab978 | 558 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 559 | spu_release_saved(ctx); |
8b3d6663 AB |
560 | return ret; |
561 | } | |
562 | ||
563 | static ssize_t | |
564 | spufs_regs_write(struct file *file, const char __user *buffer, | |
565 | size_t size, loff_t *pos) | |
566 | { | |
567 | struct spu_context *ctx = file->private_data; | |
568 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
569 | int ret; | |
570 | ||
d219889b | 571 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 572 | return -EFBIG; |
d219889b JK |
573 | |
574 | size = min_t(ssize_t, sizeof(lscsa->gprs) - *pos, size); | |
8b3d6663 AB |
575 | *pos += size; |
576 | ||
c9101bdb CH |
577 | ret = spu_acquire_saved(ctx); |
578 | if (ret) | |
579 | return ret; | |
8b3d6663 | 580 | |
2fb4423a | 581 | ret = copy_from_user((char *)lscsa->gprs + *pos - size, |
8b3d6663 AB |
582 | buffer, size) ? -EFAULT : size; |
583 | ||
27b1ea09 | 584 | spu_release_saved(ctx); |
8b3d6663 AB |
585 | return ret; |
586 | } | |
587 | ||
5dfe4c96 | 588 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
589 | .open = spufs_regs_open, |
590 | .read = spufs_regs_read, | |
591 | .write = spufs_regs_write, | |
67207b96 AB |
592 | .llseek = generic_file_llseek, |
593 | }; | |
594 | ||
bf1ab978 DGM |
595 | static ssize_t |
596 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
597 | size_t size, loff_t * pos) | |
598 | { | |
599 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
600 | return simple_read_from_buffer(buffer, size, pos, | |
601 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
602 | } | |
603 | ||
8b3d6663 AB |
604 | static ssize_t |
605 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
606 | size_t size, loff_t * pos) | |
607 | { | |
8b3d6663 | 608 | int ret; |
bf1ab978 | 609 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 610 | |
c9101bdb CH |
611 | ret = spu_acquire_saved(ctx); |
612 | if (ret) | |
613 | return ret; | |
bf1ab978 | 614 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 615 | spu_release_saved(ctx); |
8b3d6663 AB |
616 | return ret; |
617 | } | |
618 | ||
619 | static ssize_t | |
620 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
621 | size_t size, loff_t * pos) | |
622 | { | |
623 | struct spu_context *ctx = file->private_data; | |
624 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
625 | int ret; | |
626 | ||
d219889b | 627 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 628 | return -EFBIG; |
8b3d6663 | 629 | |
d219889b JK |
630 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); |
631 | ||
c9101bdb CH |
632 | ret = spu_acquire_saved(ctx); |
633 | if (ret) | |
634 | return ret; | |
8b3d6663 | 635 | |
c9101bdb | 636 | *pos += size; |
8b3d6663 AB |
637 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
638 | buffer, size) ? -EFAULT : size; | |
639 | ||
27b1ea09 | 640 | spu_release_saved(ctx); |
8b3d6663 AB |
641 | return ret; |
642 | } | |
643 | ||
5dfe4c96 | 644 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
645 | .open = spufs_regs_open, |
646 | .read = spufs_fpcr_read, | |
647 | .write = spufs_fpcr_write, | |
648 | .llseek = generic_file_llseek, | |
649 | }; | |
650 | ||
67207b96 AB |
651 | /* generic open function for all pipe-like files */ |
652 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
653 | { | |
654 | struct spufs_inode_info *i = SPUFS_I(inode); | |
655 | file->private_data = i->i_ctx; | |
656 | ||
657 | return nonseekable_open(inode, file); | |
658 | } | |
659 | ||
cdcc89bb AB |
660 | /* |
661 | * Read as many bytes from the mailbox as possible, until | |
662 | * one of the conditions becomes true: | |
663 | * | |
664 | * - no more data available in the mailbox | |
665 | * - end of the user provided buffer | |
666 | * - end of the mapped area | |
667 | */ | |
67207b96 AB |
668 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
669 | size_t len, loff_t *pos) | |
670 | { | |
8b3d6663 | 671 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
672 | u32 mbox_data, __user *udata; |
673 | ssize_t count; | |
67207b96 AB |
674 | |
675 | if (len < 4) | |
676 | return -EINVAL; | |
677 | ||
cdcc89bb AB |
678 | if (!access_ok(VERIFY_WRITE, buf, len)) |
679 | return -EFAULT; | |
680 | ||
681 | udata = (void __user *)buf; | |
682 | ||
c9101bdb CH |
683 | count = spu_acquire(ctx); |
684 | if (count) | |
685 | return count; | |
686 | ||
274cef5e | 687 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
688 | int ret; |
689 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
690 | if (ret == 0) | |
691 | break; | |
692 | ||
693 | /* | |
694 | * at the end of the mapped area, we can fault | |
695 | * but still need to return the data we have | |
696 | * read successfully so far. | |
697 | */ | |
698 | ret = __put_user(mbox_data, udata); | |
699 | if (ret) { | |
700 | if (!count) | |
701 | count = -EFAULT; | |
702 | break; | |
703 | } | |
704 | } | |
8b3d6663 | 705 | spu_release(ctx); |
67207b96 | 706 | |
cdcc89bb AB |
707 | if (!count) |
708 | count = -EAGAIN; | |
67207b96 | 709 | |
cdcc89bb | 710 | return count; |
67207b96 AB |
711 | } |
712 | ||
5dfe4c96 | 713 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
714 | .open = spufs_pipe_open, |
715 | .read = spufs_mbox_read, | |
716 | }; | |
717 | ||
718 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
719 | size_t len, loff_t *pos) | |
720 | { | |
8b3d6663 | 721 | struct spu_context *ctx = file->private_data; |
c9101bdb | 722 | ssize_t ret; |
67207b96 AB |
723 | u32 mbox_stat; |
724 | ||
725 | if (len < 4) | |
726 | return -EINVAL; | |
727 | ||
c9101bdb CH |
728 | ret = spu_acquire(ctx); |
729 | if (ret) | |
730 | return ret; | |
8b3d6663 AB |
731 | |
732 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
733 | ||
734 | spu_release(ctx); | |
67207b96 AB |
735 | |
736 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
737 | return -EFAULT; | |
738 | ||
739 | return 4; | |
740 | } | |
741 | ||
5dfe4c96 | 742 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
743 | .open = spufs_pipe_open, |
744 | .read = spufs_mbox_stat_read, | |
745 | }; | |
746 | ||
747 | /* low-level ibox access function */ | |
8b3d6663 | 748 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 749 | { |
8b3d6663 AB |
750 | return ctx->ops->ibox_read(ctx, data); |
751 | } | |
67207b96 | 752 | |
8b3d6663 AB |
753 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
754 | { | |
755 | struct spu_context *ctx = file->private_data; | |
67207b96 | 756 | |
8b3d6663 | 757 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 758 | } |
67207b96 | 759 | |
8b3d6663 AB |
760 | /* interrupt-level ibox callback function. */ |
761 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 762 | { |
8b3d6663 AB |
763 | struct spu_context *ctx = spu->ctx; |
764 | ||
e65c2f6f LB |
765 | if (!ctx) |
766 | return; | |
767 | ||
8b3d6663 AB |
768 | wake_up_all(&ctx->ibox_wq); |
769 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
770 | } |
771 | ||
cdcc89bb AB |
772 | /* |
773 | * Read as many bytes from the interrupt mailbox as possible, until | |
774 | * one of the conditions becomes true: | |
775 | * | |
776 | * - no more data available in the mailbox | |
777 | * - end of the user provided buffer | |
778 | * - end of the mapped area | |
779 | * | |
780 | * If the file is opened without O_NONBLOCK, we wait here until | |
781 | * any data is available, but return when we have been able to | |
782 | * read something. | |
783 | */ | |
67207b96 AB |
784 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
785 | size_t len, loff_t *pos) | |
786 | { | |
8b3d6663 | 787 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
788 | u32 ibox_data, __user *udata; |
789 | ssize_t count; | |
67207b96 AB |
790 | |
791 | if (len < 4) | |
792 | return -EINVAL; | |
793 | ||
cdcc89bb AB |
794 | if (!access_ok(VERIFY_WRITE, buf, len)) |
795 | return -EFAULT; | |
796 | ||
797 | udata = (void __user *)buf; | |
798 | ||
c9101bdb CH |
799 | count = spu_acquire(ctx); |
800 | if (count) | |
eebead5b | 801 | goto out; |
67207b96 | 802 | |
cdcc89bb AB |
803 | /* wait only for the first element */ |
804 | count = 0; | |
67207b96 | 805 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 806 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 807 | count = -EAGAIN; |
eebead5b CH |
808 | goto out_unlock; |
809 | } | |
67207b96 | 810 | } else { |
cdcc89bb | 811 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
812 | if (count) |
813 | goto out; | |
67207b96 AB |
814 | } |
815 | ||
cdcc89bb AB |
816 | /* if we can't write at all, return -EFAULT */ |
817 | count = __put_user(ibox_data, udata); | |
818 | if (count) | |
eebead5b | 819 | goto out_unlock; |
8b3d6663 | 820 | |
cdcc89bb AB |
821 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
822 | int ret; | |
823 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
824 | if (ret == 0) | |
825 | break; | |
826 | /* | |
827 | * at the end of the mapped area, we can fault | |
828 | * but still need to return the data we have | |
829 | * read successfully so far. | |
830 | */ | |
831 | ret = __put_user(ibox_data, udata); | |
832 | if (ret) | |
833 | break; | |
834 | } | |
67207b96 | 835 | |
eebead5b | 836 | out_unlock: |
cdcc89bb | 837 | spu_release(ctx); |
eebead5b | 838 | out: |
cdcc89bb | 839 | return count; |
67207b96 AB |
840 | } |
841 | ||
842 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
843 | { | |
8b3d6663 | 844 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
845 | unsigned int mask; |
846 | ||
8b3d6663 | 847 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 848 | |
c9101bdb CH |
849 | /* |
850 | * For now keep this uninterruptible and also ignore the rule | |
851 | * that poll should not sleep. Will be fixed later. | |
852 | */ | |
853 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
854 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
855 | spu_release(ctx); | |
67207b96 AB |
856 | |
857 | return mask; | |
858 | } | |
859 | ||
5dfe4c96 | 860 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
861 | .open = spufs_pipe_open, |
862 | .read = spufs_ibox_read, | |
863 | .poll = spufs_ibox_poll, | |
864 | .fasync = spufs_ibox_fasync, | |
865 | }; | |
866 | ||
867 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
868 | size_t len, loff_t *pos) | |
869 | { | |
8b3d6663 | 870 | struct spu_context *ctx = file->private_data; |
c9101bdb | 871 | ssize_t ret; |
67207b96 AB |
872 | u32 ibox_stat; |
873 | ||
874 | if (len < 4) | |
875 | return -EINVAL; | |
876 | ||
c9101bdb CH |
877 | ret = spu_acquire(ctx); |
878 | if (ret) | |
879 | return ret; | |
8b3d6663 AB |
880 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
881 | spu_release(ctx); | |
67207b96 AB |
882 | |
883 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
884 | return -EFAULT; | |
885 | ||
886 | return 4; | |
887 | } | |
888 | ||
5dfe4c96 | 889 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
890 | .open = spufs_pipe_open, |
891 | .read = spufs_ibox_stat_read, | |
892 | }; | |
893 | ||
894 | /* low-level mailbox write */ | |
8b3d6663 | 895 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 896 | { |
8b3d6663 AB |
897 | return ctx->ops->wbox_write(ctx, data); |
898 | } | |
67207b96 | 899 | |
8b3d6663 AB |
900 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
901 | { | |
902 | struct spu_context *ctx = file->private_data; | |
903 | int ret; | |
67207b96 | 904 | |
8b3d6663 | 905 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 906 | |
67207b96 AB |
907 | return ret; |
908 | } | |
67207b96 | 909 | |
8b3d6663 AB |
910 | /* interrupt-level wbox callback function. */ |
911 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 912 | { |
8b3d6663 AB |
913 | struct spu_context *ctx = spu->ctx; |
914 | ||
e65c2f6f LB |
915 | if (!ctx) |
916 | return; | |
917 | ||
8b3d6663 AB |
918 | wake_up_all(&ctx->wbox_wq); |
919 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
920 | } |
921 | ||
cdcc89bb AB |
922 | /* |
923 | * Write as many bytes to the interrupt mailbox as possible, until | |
924 | * one of the conditions becomes true: | |
925 | * | |
926 | * - the mailbox is full | |
927 | * - end of the user provided buffer | |
928 | * - end of the mapped area | |
929 | * | |
930 | * If the file is opened without O_NONBLOCK, we wait here until | |
931 | * space is availabyl, but return when we have been able to | |
932 | * write something. | |
933 | */ | |
67207b96 AB |
934 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
935 | size_t len, loff_t *pos) | |
936 | { | |
8b3d6663 | 937 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
938 | u32 wbox_data, __user *udata; |
939 | ssize_t count; | |
67207b96 AB |
940 | |
941 | if (len < 4) | |
942 | return -EINVAL; | |
943 | ||
cdcc89bb AB |
944 | udata = (void __user *)buf; |
945 | if (!access_ok(VERIFY_READ, buf, len)) | |
946 | return -EFAULT; | |
947 | ||
948 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
949 | return -EFAULT; |
950 | ||
c9101bdb CH |
951 | count = spu_acquire(ctx); |
952 | if (count) | |
eebead5b | 953 | goto out; |
8b3d6663 | 954 | |
cdcc89bb AB |
955 | /* |
956 | * make sure we can at least write one element, by waiting | |
957 | * in case of !O_NONBLOCK | |
958 | */ | |
959 | count = 0; | |
67207b96 | 960 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 961 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 962 | count = -EAGAIN; |
eebead5b CH |
963 | goto out_unlock; |
964 | } | |
67207b96 | 965 | } else { |
cdcc89bb | 966 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
967 | if (count) |
968 | goto out; | |
67207b96 AB |
969 | } |
970 | ||
8b3d6663 | 971 | |
96de0e25 | 972 | /* write as much as possible */ |
cdcc89bb AB |
973 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
974 | int ret; | |
975 | ret = __get_user(wbox_data, udata); | |
976 | if (ret) | |
977 | break; | |
978 | ||
979 | ret = spu_wbox_write(ctx, wbox_data); | |
980 | if (ret == 0) | |
981 | break; | |
982 | } | |
983 | ||
eebead5b | 984 | out_unlock: |
cdcc89bb | 985 | spu_release(ctx); |
eebead5b | 986 | out: |
cdcc89bb | 987 | return count; |
67207b96 AB |
988 | } |
989 | ||
990 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
991 | { | |
8b3d6663 | 992 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
993 | unsigned int mask; |
994 | ||
8b3d6663 | 995 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 996 | |
c9101bdb CH |
997 | /* |
998 | * For now keep this uninterruptible and also ignore the rule | |
999 | * that poll should not sleep. Will be fixed later. | |
1000 | */ | |
1001 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
1002 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
1003 | spu_release(ctx); | |
67207b96 AB |
1004 | |
1005 | return mask; | |
1006 | } | |
1007 | ||
5dfe4c96 | 1008 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
1009 | .open = spufs_pipe_open, |
1010 | .write = spufs_wbox_write, | |
1011 | .poll = spufs_wbox_poll, | |
1012 | .fasync = spufs_wbox_fasync, | |
1013 | }; | |
1014 | ||
1015 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
1016 | size_t len, loff_t *pos) | |
1017 | { | |
8b3d6663 | 1018 | struct spu_context *ctx = file->private_data; |
c9101bdb | 1019 | ssize_t ret; |
67207b96 AB |
1020 | u32 wbox_stat; |
1021 | ||
1022 | if (len < 4) | |
1023 | return -EINVAL; | |
1024 | ||
c9101bdb CH |
1025 | ret = spu_acquire(ctx); |
1026 | if (ret) | |
1027 | return ret; | |
8b3d6663 AB |
1028 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
1029 | spu_release(ctx); | |
67207b96 AB |
1030 | |
1031 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
1032 | return -EFAULT; | |
1033 | ||
1034 | return 4; | |
1035 | } | |
1036 | ||
5dfe4c96 | 1037 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
1038 | .open = spufs_pipe_open, |
1039 | .read = spufs_wbox_stat_read, | |
1040 | }; | |
1041 | ||
6df10a82 MN |
1042 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
1043 | { | |
1044 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1045 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1046 | |
47d3a5fa | 1047 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1048 | file->private_data = ctx; |
43c2bbd9 CH |
1049 | if (!i->i_openers++) |
1050 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 1051 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1052 | return nonseekable_open(inode, file); |
1053 | } | |
1054 | ||
43c2bbd9 CH |
1055 | static int |
1056 | spufs_signal1_release(struct inode *inode, struct file *file) | |
1057 | { | |
1058 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1059 | struct spu_context *ctx = i->i_ctx; | |
1060 | ||
47d3a5fa | 1061 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1062 | if (!--i->i_openers) |
1063 | ctx->signal1 = NULL; | |
47d3a5fa | 1064 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1065 | return 0; |
1066 | } | |
1067 | ||
bf1ab978 | 1068 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1069 | size_t len, loff_t *pos) |
1070 | { | |
17f88ceb | 1071 | int ret = 0; |
67207b96 AB |
1072 | u32 data; |
1073 | ||
67207b96 AB |
1074 | if (len < 4) |
1075 | return -EINVAL; | |
1076 | ||
17f88ceb DGM |
1077 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1078 | data = ctx->csa.spu_chnldata_RW[3]; | |
1079 | ret = 4; | |
1080 | } | |
8b3d6663 | 1081 | |
17f88ceb DGM |
1082 | if (!ret) |
1083 | goto out; | |
1084 | ||
67207b96 AB |
1085 | if (copy_to_user(buf, &data, 4)) |
1086 | return -EFAULT; | |
1087 | ||
17f88ceb DGM |
1088 | out: |
1089 | return ret; | |
67207b96 AB |
1090 | } |
1091 | ||
bf1ab978 DGM |
1092 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1093 | size_t len, loff_t *pos) | |
1094 | { | |
1095 | int ret; | |
1096 | struct spu_context *ctx = file->private_data; | |
1097 | ||
c9101bdb CH |
1098 | ret = spu_acquire_saved(ctx); |
1099 | if (ret) | |
1100 | return ret; | |
bf1ab978 | 1101 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1102 | spu_release_saved(ctx); |
bf1ab978 DGM |
1103 | |
1104 | return ret; | |
1105 | } | |
1106 | ||
67207b96 AB |
1107 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1108 | size_t len, loff_t *pos) | |
1109 | { | |
1110 | struct spu_context *ctx; | |
c9101bdb | 1111 | ssize_t ret; |
67207b96 AB |
1112 | u32 data; |
1113 | ||
1114 | ctx = file->private_data; | |
67207b96 AB |
1115 | |
1116 | if (len < 4) | |
1117 | return -EINVAL; | |
1118 | ||
1119 | if (copy_from_user(&data, buf, 4)) | |
1120 | return -EFAULT; | |
1121 | ||
c9101bdb CH |
1122 | ret = spu_acquire(ctx); |
1123 | if (ret) | |
1124 | return ret; | |
8b3d6663 AB |
1125 | ctx->ops->signal1_write(ctx, data); |
1126 | spu_release(ctx); | |
67207b96 AB |
1127 | |
1128 | return 4; | |
1129 | } | |
1130 | ||
b1e2270f NP |
1131 | static int |
1132 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1133 | { |
87ff6090 JK |
1134 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1135 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1136 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1137 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1138 | * signal 1 and 2 area | |
1139 | */ | |
87ff6090 | 1140 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1141 | #else |
1142 | #error unsupported page size | |
1143 | #endif | |
6df10a82 MN |
1144 | } |
1145 | ||
f0f37e2f | 1146 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1147 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1148 | }; |
1149 | ||
1150 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1151 | { | |
1152 | if (!(vma->vm_flags & VM_SHARED)) | |
1153 | return -EINVAL; | |
1154 | ||
78bde53e | 1155 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1156 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1157 | |
1158 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1159 | return 0; | |
1160 | } | |
6df10a82 | 1161 | |
5dfe4c96 | 1162 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1163 | .open = spufs_signal1_open, |
43c2bbd9 | 1164 | .release = spufs_signal1_release, |
67207b96 AB |
1165 | .read = spufs_signal1_read, |
1166 | .write = spufs_signal1_write, | |
6df10a82 | 1167 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
1168 | }; |
1169 | ||
d054b36f JK |
1170 | static const struct file_operations spufs_signal1_nosched_fops = { |
1171 | .open = spufs_signal1_open, | |
1172 | .release = spufs_signal1_release, | |
1173 | .write = spufs_signal1_write, | |
1174 | .mmap = spufs_signal1_mmap, | |
1175 | }; | |
1176 | ||
6df10a82 MN |
1177 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1178 | { | |
1179 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1180 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1181 | |
47d3a5fa | 1182 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1183 | file->private_data = ctx; |
43c2bbd9 CH |
1184 | if (!i->i_openers++) |
1185 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1186 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1187 | return nonseekable_open(inode, file); |
1188 | } | |
1189 | ||
43c2bbd9 CH |
1190 | static int |
1191 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1192 | { | |
1193 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1194 | struct spu_context *ctx = i->i_ctx; | |
1195 | ||
47d3a5fa | 1196 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1197 | if (!--i->i_openers) |
1198 | ctx->signal2 = NULL; | |
47d3a5fa | 1199 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1200 | return 0; |
1201 | } | |
1202 | ||
bf1ab978 | 1203 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1204 | size_t len, loff_t *pos) |
1205 | { | |
17f88ceb | 1206 | int ret = 0; |
67207b96 AB |
1207 | u32 data; |
1208 | ||
67207b96 AB |
1209 | if (len < 4) |
1210 | return -EINVAL; | |
1211 | ||
17f88ceb DGM |
1212 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1213 | data = ctx->csa.spu_chnldata_RW[4]; | |
1214 | ret = 4; | |
1215 | } | |
8b3d6663 | 1216 | |
17f88ceb DGM |
1217 | if (!ret) |
1218 | goto out; | |
1219 | ||
67207b96 AB |
1220 | if (copy_to_user(buf, &data, 4)) |
1221 | return -EFAULT; | |
1222 | ||
17f88ceb | 1223 | out: |
bf1ab978 DGM |
1224 | return ret; |
1225 | } | |
1226 | ||
1227 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1228 | size_t len, loff_t *pos) | |
1229 | { | |
1230 | struct spu_context *ctx = file->private_data; | |
1231 | int ret; | |
1232 | ||
c9101bdb CH |
1233 | ret = spu_acquire_saved(ctx); |
1234 | if (ret) | |
1235 | return ret; | |
bf1ab978 | 1236 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1237 | spu_release_saved(ctx); |
bf1ab978 DGM |
1238 | |
1239 | return ret; | |
67207b96 AB |
1240 | } |
1241 | ||
1242 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1243 | size_t len, loff_t *pos) | |
1244 | { | |
1245 | struct spu_context *ctx; | |
c9101bdb | 1246 | ssize_t ret; |
67207b96 AB |
1247 | u32 data; |
1248 | ||
1249 | ctx = file->private_data; | |
67207b96 AB |
1250 | |
1251 | if (len < 4) | |
1252 | return -EINVAL; | |
1253 | ||
1254 | if (copy_from_user(&data, buf, 4)) | |
1255 | return -EFAULT; | |
1256 | ||
c9101bdb CH |
1257 | ret = spu_acquire(ctx); |
1258 | if (ret) | |
1259 | return ret; | |
8b3d6663 AB |
1260 | ctx->ops->signal2_write(ctx, data); |
1261 | spu_release(ctx); | |
67207b96 AB |
1262 | |
1263 | return 4; | |
1264 | } | |
1265 | ||
27d5bf2a | 1266 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1267 | static int |
1268 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1269 | { |
87ff6090 JK |
1270 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1271 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1272 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1273 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1274 | * signal 1 and 2 area | |
1275 | */ | |
87ff6090 | 1276 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1277 | #else |
1278 | #error unsupported page size | |
1279 | #endif | |
6df10a82 MN |
1280 | } |
1281 | ||
f0f37e2f | 1282 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1283 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1284 | }; |
1285 | ||
1286 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1287 | { | |
1288 | if (!(vma->vm_flags & VM_SHARED)) | |
1289 | return -EINVAL; | |
1290 | ||
78bde53e | 1291 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1292 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1293 | |
1294 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1295 | return 0; | |
1296 | } | |
27d5bf2a BH |
1297 | #else /* SPUFS_MMAP_4K */ |
1298 | #define spufs_signal2_mmap NULL | |
1299 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1300 | |
5dfe4c96 | 1301 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1302 | .open = spufs_signal2_open, |
43c2bbd9 | 1303 | .release = spufs_signal2_release, |
67207b96 AB |
1304 | .read = spufs_signal2_read, |
1305 | .write = spufs_signal2_write, | |
6df10a82 | 1306 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
1307 | }; |
1308 | ||
d054b36f JK |
1309 | static const struct file_operations spufs_signal2_nosched_fops = { |
1310 | .open = spufs_signal2_open, | |
1311 | .release = spufs_signal2_release, | |
1312 | .write = spufs_signal2_write, | |
1313 | .mmap = spufs_signal2_mmap, | |
1314 | }; | |
1315 | ||
104f0cc2 ME |
1316 | /* |
1317 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1318 | * work of acquiring (or not) the SPU context before calling through | |
1319 | * to the actual get routine. The set routine is called directly. | |
1320 | */ | |
1321 | #define SPU_ATTR_NOACQUIRE 0 | |
1322 | #define SPU_ATTR_ACQUIRE 1 | |
1323 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1324 | ||
1325 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1326 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1327 | { \ |
1328 | struct spu_context *ctx = data; \ | |
c9101bdb | 1329 | int ret = 0; \ |
104f0cc2 ME |
1330 | \ |
1331 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1332 | ret = spu_acquire(ctx); \ |
1333 | if (ret) \ | |
1334 | return ret; \ | |
197b1a82 | 1335 | *val = __get(ctx); \ |
104f0cc2 ME |
1336 | spu_release(ctx); \ |
1337 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1338 | ret = spu_acquire_saved(ctx); \ |
1339 | if (ret) \ | |
1340 | return ret; \ | |
197b1a82 | 1341 | *val = __get(ctx); \ |
104f0cc2 ME |
1342 | spu_release_saved(ctx); \ |
1343 | } else \ | |
197b1a82 | 1344 | *val = __get(ctx); \ |
104f0cc2 | 1345 | \ |
197b1a82 | 1346 | return 0; \ |
104f0cc2 | 1347 | } \ |
197b1a82 | 1348 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1349 | |
197b1a82 | 1350 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1351 | { |
1352 | struct spu_context *ctx = data; | |
c9101bdb | 1353 | int ret; |
67207b96 | 1354 | |
c9101bdb CH |
1355 | ret = spu_acquire(ctx); |
1356 | if (ret) | |
1357 | return ret; | |
8b3d6663 AB |
1358 | ctx->ops->signal1_type_set(ctx, val); |
1359 | spu_release(ctx); | |
197b1a82 CH |
1360 | |
1361 | return 0; | |
67207b96 AB |
1362 | } |
1363 | ||
104f0cc2 | 1364 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1365 | { |
bf1ab978 DGM |
1366 | return ctx->ops->signal1_type_get(ctx); |
1367 | } | |
104f0cc2 | 1368 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1369 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1370 | |
67207b96 | 1371 | |
197b1a82 | 1372 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1373 | { |
1374 | struct spu_context *ctx = data; | |
c9101bdb | 1375 | int ret; |
67207b96 | 1376 | |
c9101bdb CH |
1377 | ret = spu_acquire(ctx); |
1378 | if (ret) | |
1379 | return ret; | |
8b3d6663 AB |
1380 | ctx->ops->signal2_type_set(ctx, val); |
1381 | spu_release(ctx); | |
197b1a82 CH |
1382 | |
1383 | return 0; | |
67207b96 AB |
1384 | } |
1385 | ||
104f0cc2 | 1386 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1387 | { |
bf1ab978 DGM |
1388 | return ctx->ops->signal2_type_get(ctx); |
1389 | } | |
104f0cc2 | 1390 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1391 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1392 | |
27d5bf2a | 1393 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1394 | static int |
1395 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1396 | { |
87ff6090 | 1397 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b AB |
1398 | } |
1399 | ||
f0f37e2f | 1400 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1401 | .fault = spufs_mss_mmap_fault, |
d9379c4b AB |
1402 | }; |
1403 | ||
1404 | /* | |
1405 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1406 | */ |
1407 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1408 | { | |
1409 | if (!(vma->vm_flags & VM_SHARED)) | |
1410 | return -EINVAL; | |
1411 | ||
78bde53e | 1412 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1413 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b AB |
1414 | |
1415 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1416 | return 0; | |
1417 | } | |
27d5bf2a BH |
1418 | #else /* SPUFS_MMAP_4K */ |
1419 | #define spufs_mss_mmap NULL | |
1420 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1421 | |
1422 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1423 | { | |
1424 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1425 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1426 | |
1427 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1428 | |
47d3a5fa | 1429 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1430 | if (!i->i_openers++) |
1431 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1432 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1433 | return nonseekable_open(inode, file); |
1434 | } | |
1435 | ||
43c2bbd9 CH |
1436 | static int |
1437 | spufs_mss_release(struct inode *inode, struct file *file) | |
1438 | { | |
1439 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1440 | struct spu_context *ctx = i->i_ctx; | |
1441 | ||
47d3a5fa | 1442 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1443 | if (!--i->i_openers) |
1444 | ctx->mss = NULL; | |
47d3a5fa | 1445 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1446 | return 0; |
1447 | } | |
1448 | ||
5dfe4c96 | 1449 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1450 | .open = spufs_mss_open, |
43c2bbd9 | 1451 | .release = spufs_mss_release, |
d9379c4b | 1452 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1453 | }; |
1454 | ||
b1e2270f NP |
1455 | static int |
1456 | spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
27d5bf2a | 1457 | { |
87ff6090 | 1458 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1459 | } |
1460 | ||
f0f37e2f | 1461 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1462 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1463 | }; |
1464 | ||
1465 | /* | |
1466 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1467 | */ | |
1468 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1469 | { | |
1470 | if (!(vma->vm_flags & VM_SHARED)) | |
1471 | return -EINVAL; | |
1472 | ||
78bde53e | 1473 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1474 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1475 | |
1476 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1481 | { | |
1482 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1483 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1484 | |
47d3a5fa | 1485 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1486 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1487 | if (!i->i_openers++) |
1488 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1489 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1490 | return nonseekable_open(inode, file); |
1491 | } | |
1492 | ||
43c2bbd9 CH |
1493 | static int |
1494 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1495 | { | |
1496 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1497 | struct spu_context *ctx = i->i_ctx; | |
1498 | ||
47d3a5fa | 1499 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1500 | if (!--i->i_openers) |
1501 | ctx->psmap = NULL; | |
47d3a5fa | 1502 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1503 | return 0; |
1504 | } | |
1505 | ||
5dfe4c96 | 1506 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1507 | .open = spufs_psmap_open, |
43c2bbd9 | 1508 | .release = spufs_psmap_release, |
27d5bf2a | 1509 | .mmap = spufs_psmap_mmap, |
d9379c4b AB |
1510 | }; |
1511 | ||
1512 | ||
27d5bf2a | 1513 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1514 | static int |
1515 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1516 | { |
87ff6090 | 1517 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1518 | } |
1519 | ||
f0f37e2f | 1520 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1521 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1522 | }; |
1523 | ||
1524 | /* | |
1525 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1526 | */ |
1527 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1528 | { | |
1529 | if (!(vma->vm_flags & VM_SHARED)) | |
1530 | return -EINVAL; | |
1531 | ||
78bde53e | 1532 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1533 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1534 | |
1535 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1536 | return 0; | |
1537 | } | |
27d5bf2a BH |
1538 | #else /* SPUFS_MMAP_4K */ |
1539 | #define spufs_mfc_mmap NULL | |
1540 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1541 | |
1542 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1543 | { | |
1544 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1545 | struct spu_context *ctx = i->i_ctx; | |
1546 | ||
1547 | /* we don't want to deal with DMA into other processes */ | |
1548 | if (ctx->owner != current->mm) | |
1549 | return -EINVAL; | |
1550 | ||
1551 | if (atomic_read(&inode->i_count) != 1) | |
1552 | return -EBUSY; | |
1553 | ||
47d3a5fa | 1554 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1555 | file->private_data = ctx; |
43c2bbd9 CH |
1556 | if (!i->i_openers++) |
1557 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1558 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1559 | return nonseekable_open(inode, file); |
1560 | } | |
1561 | ||
43c2bbd9 CH |
1562 | static int |
1563 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1564 | { | |
1565 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1566 | struct spu_context *ctx = i->i_ctx; | |
1567 | ||
47d3a5fa | 1568 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1569 | if (!--i->i_openers) |
1570 | ctx->mfc = NULL; | |
47d3a5fa | 1571 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1572 | return 0; |
1573 | } | |
1574 | ||
a33a7d73 AB |
1575 | /* interrupt-level mfc callback function. */ |
1576 | void spufs_mfc_callback(struct spu *spu) | |
1577 | { | |
1578 | struct spu_context *ctx = spu->ctx; | |
1579 | ||
e65c2f6f LB |
1580 | if (!ctx) |
1581 | return; | |
1582 | ||
a33a7d73 AB |
1583 | wake_up_all(&ctx->mfc_wq); |
1584 | ||
e48b1b45 | 1585 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1586 | if (ctx->mfc_fasync) { |
1587 | u32 free_elements, tagstatus; | |
1588 | unsigned int mask; | |
1589 | ||
1590 | /* no need for spu_acquire in interrupt context */ | |
1591 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1592 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1593 | ||
1594 | mask = 0; | |
1595 | if (free_elements & 0xffff) | |
1596 | mask |= POLLOUT; | |
1597 | if (tagstatus & ctx->tagwait) | |
1598 | mask |= POLLIN; | |
1599 | ||
1600 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1601 | } | |
1602 | } | |
1603 | ||
1604 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1605 | { | |
1606 | /* See if there is one tag group is complete */ | |
1607 | /* FIXME we need locking around tagwait */ | |
1608 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1609 | ctx->tagwait &= ~*status; | |
1610 | if (*status) | |
1611 | return 1; | |
1612 | ||
1613 | /* enable interrupt waiting for any tag group, | |
1614 | may silently fail if interrupts are already enabled */ | |
1615 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1616 | return 0; | |
1617 | } | |
1618 | ||
1619 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1620 | size_t size, loff_t *pos) | |
1621 | { | |
1622 | struct spu_context *ctx = file->private_data; | |
1623 | int ret = -EINVAL; | |
1624 | u32 status; | |
1625 | ||
1626 | if (size != 4) | |
1627 | goto out; | |
1628 | ||
c9101bdb CH |
1629 | ret = spu_acquire(ctx); |
1630 | if (ret) | |
1631 | return ret; | |
1632 | ||
1633 | ret = -EINVAL; | |
a33a7d73 AB |
1634 | if (file->f_flags & O_NONBLOCK) { |
1635 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1636 | if (!(status & ctx->tagwait)) | |
1637 | ret = -EAGAIN; | |
1638 | else | |
c9101bdb | 1639 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1640 | ctx->tagwait &= ~status; |
1641 | } else { | |
1642 | ret = spufs_wait(ctx->mfc_wq, | |
1643 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1644 | if (ret) |
1645 | goto out; | |
a33a7d73 AB |
1646 | } |
1647 | spu_release(ctx); | |
1648 | ||
a33a7d73 AB |
1649 | ret = 4; |
1650 | if (copy_to_user(buffer, &status, 4)) | |
1651 | ret = -EFAULT; | |
1652 | ||
1653 | out: | |
1654 | return ret; | |
1655 | } | |
1656 | ||
1657 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1658 | { | |
9477e455 | 1659 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1660 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1661 | ||
1662 | switch (cmd->cmd) { | |
1663 | case MFC_PUT_CMD: | |
1664 | case MFC_PUTF_CMD: | |
1665 | case MFC_PUTB_CMD: | |
1666 | case MFC_GET_CMD: | |
1667 | case MFC_GETF_CMD: | |
1668 | case MFC_GETB_CMD: | |
1669 | break; | |
1670 | default: | |
1671 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1672 | return -EIO; | |
1673 | } | |
1674 | ||
1675 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1676 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1677 | cmd->ea, cmd->lsa); |
1678 | return -EIO; | |
1679 | } | |
1680 | ||
1681 | switch (cmd->size & 0xf) { | |
1682 | case 1: | |
1683 | break; | |
1684 | case 2: | |
1685 | if (cmd->lsa & 1) | |
1686 | goto error; | |
1687 | break; | |
1688 | case 4: | |
1689 | if (cmd->lsa & 3) | |
1690 | goto error; | |
1691 | break; | |
1692 | case 8: | |
1693 | if (cmd->lsa & 7) | |
1694 | goto error; | |
1695 | break; | |
1696 | case 0: | |
1697 | if (cmd->lsa & 15) | |
1698 | goto error; | |
1699 | break; | |
1700 | error: | |
1701 | default: | |
1702 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1703 | cmd->lsa & 0xf, cmd->size); | |
1704 | return -EIO; | |
1705 | } | |
1706 | ||
1707 | if (cmd->size > 16 * 1024) { | |
1708 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1709 | return -EIO; | |
1710 | } | |
1711 | ||
1712 | if (cmd->tag & 0xfff0) { | |
1713 | /* we reserve the higher tag numbers for kernel use */ | |
1714 | pr_debug("invalid DMA tag\n"); | |
1715 | return -EIO; | |
1716 | } | |
1717 | ||
1718 | if (cmd->class) { | |
1719 | /* not supported in this version */ | |
1720 | pr_debug("invalid DMA class\n"); | |
1721 | return -EIO; | |
1722 | } | |
1723 | ||
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1728 | struct mfc_dma_command cmd, | |
1729 | int *error) | |
1730 | { | |
1731 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1732 | if (*error == -EAGAIN) { | |
1733 | /* wait for any tag group to complete | |
1734 | so we have space for the new command */ | |
1735 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1736 | /* try again, because the queue might be | |
1737 | empty again */ | |
1738 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1739 | if (*error == -EAGAIN) | |
1740 | return 0; | |
1741 | } | |
1742 | return 1; | |
1743 | } | |
1744 | ||
1745 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1746 | size_t size, loff_t *pos) | |
1747 | { | |
1748 | struct spu_context *ctx = file->private_data; | |
1749 | struct mfc_dma_command cmd; | |
1750 | int ret = -EINVAL; | |
1751 | ||
1752 | if (size != sizeof cmd) | |
1753 | goto out; | |
1754 | ||
1755 | ret = -EFAULT; | |
1756 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1757 | goto out; | |
1758 | ||
1759 | ret = spufs_check_valid_dma(&cmd); | |
1760 | if (ret) | |
1761 | goto out; | |
1762 | ||
c9101bdb CH |
1763 | ret = spu_acquire(ctx); |
1764 | if (ret) | |
1765 | goto out; | |
1766 | ||
33bfd7a7 | 1767 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1768 | if (ret) |
1769 | goto out; | |
1770 | ||
a33a7d73 AB |
1771 | if (file->f_flags & O_NONBLOCK) { |
1772 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1773 | } else { | |
1774 | int status; | |
1775 | ret = spufs_wait(ctx->mfc_wq, | |
1776 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1777 | if (ret) |
1778 | goto out; | |
a33a7d73 AB |
1779 | if (status) |
1780 | ret = status; | |
1781 | } | |
a33a7d73 AB |
1782 | |
1783 | if (ret) | |
933b0e35 | 1784 | goto out_unlock; |
a33a7d73 AB |
1785 | |
1786 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1787 | ret = size; |
a33a7d73 | 1788 | |
933b0e35 KA |
1789 | out_unlock: |
1790 | spu_release(ctx); | |
a33a7d73 AB |
1791 | out: |
1792 | return ret; | |
1793 | } | |
1794 | ||
1795 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1796 | { | |
1797 | struct spu_context *ctx = file->private_data; | |
1798 | u32 free_elements, tagstatus; | |
1799 | unsigned int mask; | |
1800 | ||
933b0e35 KA |
1801 | poll_wait(file, &ctx->mfc_wq, wait); |
1802 | ||
c9101bdb CH |
1803 | /* |
1804 | * For now keep this uninterruptible and also ignore the rule | |
1805 | * that poll should not sleep. Will be fixed later. | |
1806 | */ | |
1807 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1808 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1809 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1810 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1811 | spu_release(ctx); | |
1812 | ||
a33a7d73 AB |
1813 | mask = 0; |
1814 | if (free_elements & 0xffff) | |
1815 | mask |= POLLOUT | POLLWRNORM; | |
1816 | if (tagstatus & ctx->tagwait) | |
1817 | mask |= POLLIN | POLLRDNORM; | |
1818 | ||
e48b1b45 | 1819 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1820 | free_elements, tagstatus, ctx->tagwait); |
1821 | ||
1822 | return mask; | |
1823 | } | |
1824 | ||
73b6af8a | 1825 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1826 | { |
1827 | struct spu_context *ctx = file->private_data; | |
1828 | int ret; | |
1829 | ||
c9101bdb CH |
1830 | ret = spu_acquire(ctx); |
1831 | if (ret) | |
eebead5b | 1832 | goto out; |
a33a7d73 AB |
1833 | #if 0 |
1834 | /* this currently hangs */ | |
1835 | ret = spufs_wait(ctx->mfc_wq, | |
1836 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1837 | if (ret) | |
1838 | goto out; | |
1839 | ret = spufs_wait(ctx->mfc_wq, | |
1840 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1841 | if (ret) |
1842 | goto out; | |
a33a7d73 AB |
1843 | #else |
1844 | ret = 0; | |
1845 | #endif | |
1846 | spu_release(ctx); | |
eebead5b | 1847 | out: |
a33a7d73 AB |
1848 | return ret; |
1849 | } | |
1850 | ||
1851 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1852 | int datasync) | |
1853 | { | |
73b6af8a | 1854 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1855 | } |
1856 | ||
1857 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1858 | { | |
1859 | struct spu_context *ctx = file->private_data; | |
1860 | ||
1861 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1862 | } | |
1863 | ||
5dfe4c96 | 1864 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1865 | .open = spufs_mfc_open, |
43c2bbd9 | 1866 | .release = spufs_mfc_release, |
a33a7d73 AB |
1867 | .read = spufs_mfc_read, |
1868 | .write = spufs_mfc_write, | |
1869 | .poll = spufs_mfc_poll, | |
1870 | .flush = spufs_mfc_flush, | |
1871 | .fsync = spufs_mfc_fsync, | |
1872 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1873 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1874 | }; |
1875 | ||
197b1a82 | 1876 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1877 | { |
1878 | struct spu_context *ctx = data; | |
c9101bdb CH |
1879 | int ret; |
1880 | ||
1881 | ret = spu_acquire(ctx); | |
1882 | if (ret) | |
1883 | return ret; | |
8b3d6663 AB |
1884 | ctx->ops->npc_write(ctx, val); |
1885 | spu_release(ctx); | |
197b1a82 CH |
1886 | |
1887 | return 0; | |
67207b96 AB |
1888 | } |
1889 | ||
104f0cc2 | 1890 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1891 | { |
1892 | return ctx->ops->npc_read(ctx); | |
1893 | } | |
104f0cc2 ME |
1894 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1895 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1896 | |
197b1a82 | 1897 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1898 | { |
1899 | struct spu_context *ctx = data; | |
1900 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1901 | int ret; |
1902 | ||
1903 | ret = spu_acquire_saved(ctx); | |
1904 | if (ret) | |
1905 | return ret; | |
8b3d6663 | 1906 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1907 | spu_release_saved(ctx); |
197b1a82 CH |
1908 | |
1909 | return 0; | |
8b3d6663 AB |
1910 | } |
1911 | ||
104f0cc2 | 1912 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1913 | { |
8b3d6663 | 1914 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1915 | return lscsa->decr.slot[0]; |
1916 | } | |
104f0cc2 ME |
1917 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1918 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1919 | |
197b1a82 | 1920 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1921 | { |
1922 | struct spu_context *ctx = data; | |
c9101bdb CH |
1923 | int ret; |
1924 | ||
1925 | ret = spu_acquire_saved(ctx); | |
1926 | if (ret) | |
1927 | return ret; | |
d40a01d4 MN |
1928 | if (val) |
1929 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1930 | else | |
1931 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1932 | spu_release_saved(ctx); |
197b1a82 CH |
1933 | |
1934 | return 0; | |
8b3d6663 AB |
1935 | } |
1936 | ||
104f0cc2 | 1937 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1938 | { |
d40a01d4 MN |
1939 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1940 | return SPU_DECR_STATUS_RUNNING; | |
1941 | else | |
1942 | return 0; | |
bf1ab978 | 1943 | } |
104f0cc2 ME |
1944 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1945 | spufs_decr_status_set, "0x%llx\n", | |
1946 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1947 | |
197b1a82 | 1948 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1949 | { |
1950 | struct spu_context *ctx = data; | |
1951 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1952 | int ret; |
1953 | ||
1954 | ret = spu_acquire_saved(ctx); | |
1955 | if (ret) | |
1956 | return ret; | |
8b3d6663 | 1957 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1958 | spu_release_saved(ctx); |
197b1a82 CH |
1959 | |
1960 | return 0; | |
8b3d6663 AB |
1961 | } |
1962 | ||
104f0cc2 | 1963 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1964 | { |
8b3d6663 | 1965 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1966 | return lscsa->event_mask.slot[0]; |
1967 | } | |
1968 | ||
104f0cc2 ME |
1969 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1970 | spufs_event_mask_set, "0x%llx\n", | |
1971 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1972 | |
104f0cc2 | 1973 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1974 | { |
b9e3bd77 | 1975 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1976 | u64 stat; |
b9e3bd77 DGM |
1977 | stat = state->spu_chnlcnt_RW[0]; |
1978 | if (stat) | |
bf1ab978 DGM |
1979 | return state->spu_chnldata_RW[0]; |
1980 | return 0; | |
1981 | } | |
104f0cc2 ME |
1982 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1983 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1984 | |
197b1a82 | 1985 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1986 | { |
1987 | struct spu_context *ctx = data; | |
1988 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1989 | int ret; |
1990 | ||
1991 | ret = spu_acquire_saved(ctx); | |
1992 | if (ret) | |
1993 | return ret; | |
8b3d6663 | 1994 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1995 | spu_release_saved(ctx); |
197b1a82 CH |
1996 | |
1997 | return 0; | |
8b3d6663 AB |
1998 | } |
1999 | ||
104f0cc2 | 2000 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 2001 | { |
8b3d6663 | 2002 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 2003 | return lscsa->srr0.slot[0]; |
8b3d6663 | 2004 | } |
104f0cc2 ME |
2005 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
2006 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 2007 | |
104f0cc2 | 2008 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 2009 | { |
7b1a7014 AB |
2010 | u64 num; |
2011 | ||
7b1a7014 AB |
2012 | if (ctx->state == SPU_STATE_RUNNABLE) |
2013 | num = ctx->spu->number; | |
2014 | else | |
2015 | num = (unsigned int)-1; | |
7b1a7014 AB |
2016 | |
2017 | return num; | |
2018 | } | |
104f0cc2 ME |
2019 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
2020 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 2021 | |
104f0cc2 | 2022 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
2023 | { |
2024 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 2025 | return ctx->object_id; |
bf1ab978 DGM |
2026 | } |
2027 | ||
197b1a82 | 2028 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
2029 | { |
2030 | struct spu_context *ctx = data; | |
2031 | ctx->object_id = id; | |
197b1a82 CH |
2032 | |
2033 | return 0; | |
86767277 AB |
2034 | } |
2035 | ||
104f0cc2 ME |
2036 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
2037 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 2038 | |
104f0cc2 | 2039 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 2040 | { |
bf1ab978 DGM |
2041 | return ctx->csa.priv2.spu_lslr_RW; |
2042 | } | |
104f0cc2 ME |
2043 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
2044 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
2045 | |
2046 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2047 | { | |
2048 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2049 | struct spu_context *ctx = i->i_ctx; | |
2050 | file->private_data = ctx; | |
2051 | return 0; | |
2052 | } | |
2053 | ||
cbe709c1 BH |
2054 | static int spufs_caps_show(struct seq_file *s, void *private) |
2055 | { | |
2056 | struct spu_context *ctx = s->private; | |
2057 | ||
2058 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2059 | seq_puts(s, "sched\n"); | |
2060 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2061 | seq_puts(s, "step\n"); | |
2062 | return 0; | |
2063 | } | |
2064 | ||
2065 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2066 | { | |
2067 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2068 | } | |
2069 | ||
2070 | static const struct file_operations spufs_caps_fops = { | |
2071 | .open = spufs_caps_open, | |
2072 | .read = seq_read, | |
2073 | .llseek = seq_lseek, | |
2074 | .release = single_release, | |
2075 | }; | |
2076 | ||
bf1ab978 DGM |
2077 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2078 | char __user *buf, size_t len, loff_t *pos) | |
2079 | { | |
bf1ab978 DGM |
2080 | u32 data; |
2081 | ||
cbea9238 JK |
2082 | /* EOF if there's no entry in the mbox */ |
2083 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2084 | return 0; | |
2085 | ||
2086 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2087 | |
2088 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2089 | } | |
2090 | ||
69a2f00c DGM |
2091 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2092 | size_t len, loff_t *pos) | |
2093 | { | |
bf1ab978 | 2094 | int ret; |
69a2f00c | 2095 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2096 | |
2097 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2098 | return -EFAULT; | |
2099 | ||
c9101bdb CH |
2100 | ret = spu_acquire_saved(ctx); |
2101 | if (ret) | |
2102 | return ret; | |
69a2f00c | 2103 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2104 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2105 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2106 | spu_release_saved(ctx); |
69a2f00c | 2107 | |
bf1ab978 | 2108 | return ret; |
69a2f00c DGM |
2109 | } |
2110 | ||
5dfe4c96 | 2111 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2112 | .open = spufs_info_open, |
2113 | .read = spufs_mbox_info_read, | |
2114 | .llseek = generic_file_llseek, | |
2115 | }; | |
2116 | ||
bf1ab978 DGM |
2117 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2118 | char __user *buf, size_t len, loff_t *pos) | |
2119 | { | |
bf1ab978 DGM |
2120 | u32 data; |
2121 | ||
cbea9238 JK |
2122 | /* EOF if there's no entry in the ibox */ |
2123 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2124 | return 0; | |
2125 | ||
2126 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2127 | |
2128 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2129 | } | |
2130 | ||
69a2f00c DGM |
2131 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2132 | size_t len, loff_t *pos) | |
2133 | { | |
2134 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2135 | int ret; |
69a2f00c DGM |
2136 | |
2137 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2138 | return -EFAULT; | |
2139 | ||
c9101bdb CH |
2140 | ret = spu_acquire_saved(ctx); |
2141 | if (ret) | |
2142 | return ret; | |
69a2f00c | 2143 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2144 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2145 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2146 | spu_release_saved(ctx); |
69a2f00c | 2147 | |
bf1ab978 | 2148 | return ret; |
69a2f00c DGM |
2149 | } |
2150 | ||
5dfe4c96 | 2151 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2152 | .open = spufs_info_open, |
2153 | .read = spufs_ibox_info_read, | |
2154 | .llseek = generic_file_llseek, | |
2155 | }; | |
2156 | ||
bf1ab978 DGM |
2157 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2158 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2159 | { |
69a2f00c DGM |
2160 | int i, cnt; |
2161 | u32 data[4]; | |
2162 | u32 wbox_stat; | |
2163 | ||
bf1ab978 DGM |
2164 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2165 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2166 | for (i = 0; i < cnt; i++) { | |
2167 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2168 | } | |
2169 | ||
2170 | return simple_read_from_buffer(buf, len, pos, &data, | |
2171 | cnt * sizeof(u32)); | |
2172 | } | |
2173 | ||
2174 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2175 | size_t len, loff_t *pos) | |
2176 | { | |
2177 | struct spu_context *ctx = file->private_data; | |
2178 | int ret; | |
2179 | ||
69a2f00c DGM |
2180 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2181 | return -EFAULT; | |
2182 | ||
c9101bdb CH |
2183 | ret = spu_acquire_saved(ctx); |
2184 | if (ret) | |
2185 | return ret; | |
69a2f00c | 2186 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2187 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2188 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2189 | spu_release_saved(ctx); |
69a2f00c | 2190 | |
bf1ab978 | 2191 | return ret; |
69a2f00c DGM |
2192 | } |
2193 | ||
5dfe4c96 | 2194 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2195 | .open = spufs_info_open, |
2196 | .read = spufs_wbox_info_read, | |
2197 | .llseek = generic_file_llseek, | |
2198 | }; | |
2199 | ||
bf1ab978 DGM |
2200 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2201 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2202 | { |
b9e3bd77 DGM |
2203 | struct spu_dma_info info; |
2204 | struct mfc_cq_sr *qp, *spuqp; | |
2205 | int i; | |
2206 | ||
b9e3bd77 DGM |
2207 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2208 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2209 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2210 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2211 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2212 | for (i = 0; i < 16; i++) { | |
2213 | qp = &info.dma_info_command_data[i]; | |
2214 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2215 | ||
2216 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2217 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2218 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2219 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2220 | } | |
b9e3bd77 DGM |
2221 | |
2222 | return simple_read_from_buffer(buf, len, pos, &info, | |
2223 | sizeof info); | |
2224 | } | |
2225 | ||
bf1ab978 DGM |
2226 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2227 | size_t len, loff_t *pos) | |
2228 | { | |
2229 | struct spu_context *ctx = file->private_data; | |
2230 | int ret; | |
2231 | ||
2232 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2233 | return -EFAULT; | |
2234 | ||
c9101bdb CH |
2235 | ret = spu_acquire_saved(ctx); |
2236 | if (ret) | |
2237 | return ret; | |
bf1ab978 DGM |
2238 | spin_lock(&ctx->csa.register_lock); |
2239 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2240 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2241 | spu_release_saved(ctx); |
bf1ab978 DGM |
2242 | |
2243 | return ret; | |
2244 | } | |
2245 | ||
5dfe4c96 | 2246 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2247 | .open = spufs_info_open, |
2248 | .read = spufs_dma_info_read, | |
2249 | }; | |
2250 | ||
bf1ab978 DGM |
2251 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2252 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2253 | { |
b9e3bd77 | 2254 | struct spu_proxydma_info info; |
b9e3bd77 | 2255 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2256 | int ret = sizeof info; |
b9e3bd77 DGM |
2257 | int i; |
2258 | ||
2259 | if (len < ret) | |
2260 | return -EINVAL; | |
2261 | ||
2262 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2263 | return -EFAULT; | |
2264 | ||
b9e3bd77 DGM |
2265 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2266 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2267 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2268 | for (i = 0; i < 8; i++) { | |
2269 | qp = &info.proxydma_info_command_data[i]; | |
2270 | puqp = &ctx->csa.priv2.puq[i]; | |
2271 | ||
2272 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2273 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2274 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2275 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2276 | } | |
bf1ab978 DGM |
2277 | |
2278 | return simple_read_from_buffer(buf, len, pos, &info, | |
2279 | sizeof info); | |
2280 | } | |
2281 | ||
2282 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2283 | size_t len, loff_t *pos) | |
2284 | { | |
2285 | struct spu_context *ctx = file->private_data; | |
2286 | int ret; | |
2287 | ||
c9101bdb CH |
2288 | ret = spu_acquire_saved(ctx); |
2289 | if (ret) | |
2290 | return ret; | |
bf1ab978 DGM |
2291 | spin_lock(&ctx->csa.register_lock); |
2292 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2293 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2294 | spu_release_saved(ctx); |
b9e3bd77 | 2295 | |
b9e3bd77 DGM |
2296 | return ret; |
2297 | } | |
2298 | ||
5dfe4c96 | 2299 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2300 | .open = spufs_info_open, |
2301 | .read = spufs_proxydma_info_read, | |
2302 | }; | |
2303 | ||
476273ad CH |
2304 | static int spufs_show_tid(struct seq_file *s, void *private) |
2305 | { | |
2306 | struct spu_context *ctx = s->private; | |
2307 | ||
2308 | seq_printf(s, "%d\n", ctx->tid); | |
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2313 | { | |
2314 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2315 | } | |
2316 | ||
2317 | static const struct file_operations spufs_tid_fops = { | |
2318 | .open = spufs_tid_open, | |
2319 | .read = seq_read, | |
2320 | .llseek = seq_lseek, | |
2321 | .release = single_release, | |
2322 | }; | |
2323 | ||
e9f8a0b6 CH |
2324 | static const char *ctx_state_names[] = { |
2325 | "user", "system", "iowait", "loaded" | |
2326 | }; | |
2327 | ||
2328 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2329 | enum spu_utilization_state state) |
e9f8a0b6 | 2330 | { |
27ec41d3 AD |
2331 | struct timespec ts; |
2332 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2333 | |
27ec41d3 AD |
2334 | /* |
2335 | * In general, utilization statistics are updated by the controlling | |
2336 | * thread as the spu context moves through various well defined | |
2337 | * state transitions, but if the context is lazily loaded its | |
2338 | * utilization statistics are not updated as the controlling thread | |
2339 | * is not tightly coupled with the execution of the spu context. We | |
2340 | * calculate and apply the time delta from the last recorded state | |
2341 | * of the spu context. | |
2342 | */ | |
2343 | if (ctx->spu && ctx->stats.util_state == state) { | |
2344 | ktime_get_ts(&ts); | |
2345 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2346 | } | |
e9f8a0b6 | 2347 | |
27ec41d3 | 2348 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2349 | } |
2350 | ||
2351 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2352 | { | |
2353 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2354 | ||
2355 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2356 | slb_flts += (ctx->spu->stats.slb_flt - | |
2357 | ctx->stats.slb_flt_base); | |
2358 | } | |
2359 | ||
2360 | return slb_flts; | |
2361 | } | |
2362 | ||
2363 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2364 | { | |
2365 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2366 | ||
2367 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2368 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2369 | ctx->stats.class2_intr_base); | |
2370 | } | |
2371 | ||
2372 | return class2_intrs; | |
2373 | } | |
2374 | ||
2375 | ||
2376 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2377 | { | |
2378 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2379 | int ret; |
2380 | ||
2381 | ret = spu_acquire(ctx); | |
2382 | if (ret) | |
2383 | return ret; | |
e9f8a0b6 | 2384 | |
e9f8a0b6 CH |
2385 | seq_printf(s, "%s %llu %llu %llu %llu " |
2386 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2387 | ctx_state_names[ctx->stats.util_state], |
2388 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2389 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2390 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2391 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2392 | ctx->stats.vol_ctx_switch, |
2393 | ctx->stats.invol_ctx_switch, | |
2394 | spufs_slb_flts(ctx), | |
2395 | ctx->stats.hash_flt, | |
2396 | ctx->stats.min_flt, | |
2397 | ctx->stats.maj_flt, | |
2398 | spufs_class2_intrs(ctx), | |
2399 | ctx->stats.libassist); | |
2400 | spu_release(ctx); | |
2401 | return 0; | |
2402 | } | |
2403 | ||
2404 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2405 | { | |
2406 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2407 | } | |
2408 | ||
2409 | static const struct file_operations spufs_stat_fops = { | |
2410 | .open = spufs_stat_open, | |
2411 | .read = seq_read, | |
2412 | .llseek = seq_lseek, | |
2413 | .release = single_release, | |
2414 | }; | |
2415 | ||
5158e9b5 CH |
2416 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2417 | { | |
2418 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2419 | SWITCH_LOG_BUFSIZE; | |
2420 | } | |
2421 | ||
2422 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2423 | { | |
2424 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2425 | } | |
2426 | ||
2427 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2428 | { | |
2429 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2430 | int rc; |
2431 | ||
2432 | rc = spu_acquire(ctx); | |
2433 | if (rc) | |
2434 | return rc; | |
5158e9b5 | 2435 | |
5158e9b5 | 2436 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2437 | rc = -EBUSY; |
2438 | goto out; | |
5158e9b5 | 2439 | } |
f5ed0eb6 | 2440 | |
837ef884 | 2441 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2442 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2443 | GFP_KERNEL); | |
2444 | ||
2445 | if (!ctx->switch_log) { | |
2446 | rc = -ENOMEM; | |
2447 | goto out; | |
2448 | } | |
2449 | ||
837ef884 | 2450 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2451 | init_waitqueue_head(&ctx->switch_log->wait); |
2452 | rc = 0; | |
2453 | ||
2454 | out: | |
2455 | spu_release(ctx); | |
2456 | return rc; | |
2457 | } | |
2458 | ||
2459 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2460 | { | |
2461 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2462 | int rc; | |
2463 | ||
2464 | rc = spu_acquire(ctx); | |
2465 | if (rc) | |
2466 | return rc; | |
2467 | ||
2468 | kfree(ctx->switch_log); | |
2469 | ctx->switch_log = NULL; | |
2470 | spu_release(ctx); | |
5158e9b5 CH |
2471 | |
2472 | return 0; | |
5158e9b5 CH |
2473 | } |
2474 | ||
2475 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2476 | { | |
2477 | struct switch_log_entry *p; | |
2478 | ||
2479 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2480 | ||
2481 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2482 | (unsigned int) p->tstamp.tv_sec, | |
2483 | (unsigned int) p->tstamp.tv_nsec, | |
2484 | p->spu_id, | |
2485 | (unsigned int) p->type, | |
2486 | (unsigned int) p->val, | |
2487 | (unsigned long long) p->timebase); | |
2488 | } | |
2489 | ||
2490 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2491 | size_t len, loff_t *ppos) | |
2492 | { | |
2493 | struct inode *inode = file->f_path.dentry->d_inode; | |
2494 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2495 | int error = 0, cnt = 0; | |
2496 | ||
17e37675 | 2497 | if (!buf) |
5158e9b5 CH |
2498 | return -EINVAL; |
2499 | ||
f5ed0eb6 JK |
2500 | error = spu_acquire(ctx); |
2501 | if (error) | |
2502 | return error; | |
2503 | ||
5158e9b5 CH |
2504 | while (cnt < len) { |
2505 | char tbuf[128]; | |
2506 | int width; | |
2507 | ||
14f693ee JK |
2508 | if (spufs_switch_log_used(ctx) == 0) { |
2509 | if (cnt > 0) { | |
2510 | /* If there's data ready to go, we can | |
2511 | * just return straight away */ | |
2512 | break; | |
2513 | ||
2514 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2515 | error = -EAGAIN; |
2516 | break; | |
14f693ee JK |
2517 | |
2518 | } else { | |
2519 | /* spufs_wait will drop the mutex and | |
2520 | * re-acquire, but since we're in read(), the | |
2521 | * file cannot be _released (and so | |
2522 | * ctx->switch_log is stable). | |
2523 | */ | |
2524 | error = spufs_wait(ctx->switch_log->wait, | |
2525 | spufs_switch_log_used(ctx) > 0); | |
2526 | ||
2527 | /* On error, spufs_wait returns without the | |
2528 | * state mutex held */ | |
2529 | if (error) | |
2530 | return error; | |
2531 | ||
2532 | /* We may have had entries read from underneath | |
2533 | * us while we dropped the mutex in spufs_wait, | |
2534 | * so re-check */ | |
2535 | if (spufs_switch_log_used(ctx) == 0) | |
2536 | continue; | |
f5ed0eb6 | 2537 | } |
5158e9b5 CH |
2538 | } |
2539 | ||
5158e9b5 | 2540 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2541 | if (width < len) |
5158e9b5 CH |
2542 | ctx->switch_log->tail = |
2543 | (ctx->switch_log->tail + 1) % | |
2544 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2545 | else |
2546 | /* If the record is greater than space available return | |
2547 | * partial buffer (so far) */ | |
5158e9b5 CH |
2548 | break; |
2549 | ||
2550 | error = copy_to_user(buf + cnt, tbuf, width); | |
2551 | if (error) | |
2552 | break; | |
2553 | cnt += width; | |
2554 | } | |
2555 | ||
f5ed0eb6 JK |
2556 | spu_release(ctx); |
2557 | ||
5158e9b5 CH |
2558 | return cnt == 0 ? error : cnt; |
2559 | } | |
2560 | ||
2561 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2562 | { | |
2563 | struct inode *inode = file->f_path.dentry->d_inode; | |
2564 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2565 | unsigned int mask = 0; | |
f5ed0eb6 | 2566 | int rc; |
5158e9b5 CH |
2567 | |
2568 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2569 | ||
f5ed0eb6 JK |
2570 | rc = spu_acquire(ctx); |
2571 | if (rc) | |
2572 | return rc; | |
2573 | ||
5158e9b5 CH |
2574 | if (spufs_switch_log_used(ctx) > 0) |
2575 | mask |= POLLIN; | |
2576 | ||
f5ed0eb6 JK |
2577 | spu_release(ctx); |
2578 | ||
5158e9b5 CH |
2579 | return mask; |
2580 | } | |
2581 | ||
2582 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2583 | .owner = THIS_MODULE, |
2584 | .open = spufs_switch_log_open, | |
2585 | .read = spufs_switch_log_read, | |
2586 | .poll = spufs_switch_log_poll, | |
2587 | .release = spufs_switch_log_release, | |
5158e9b5 CH |
2588 | }; |
2589 | ||
f5ed0eb6 JK |
2590 | /** |
2591 | * Log a context switch event to a switch log reader. | |
2592 | * | |
2593 | * Must be called with ctx->state_mutex held. | |
2594 | */ | |
5158e9b5 CH |
2595 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2596 | u32 type, u32 val) | |
2597 | { | |
2598 | if (!ctx->switch_log) | |
2599 | return; | |
2600 | ||
5158e9b5 CH |
2601 | if (spufs_switch_log_avail(ctx) > 1) { |
2602 | struct switch_log_entry *p; | |
2603 | ||
2604 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2605 | ktime_get_ts(&p->tstamp); | |
2606 | p->timebase = get_tb(); | |
2607 | p->spu_id = spu ? spu->number : -1; | |
2608 | p->type = type; | |
2609 | p->val = val; | |
2610 | ||
2611 | ctx->switch_log->head = | |
2612 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2613 | } | |
5158e9b5 CH |
2614 | |
2615 | wake_up(&ctx->switch_log->wait); | |
2616 | } | |
e9f8a0b6 | 2617 | |
46deed69 LB |
2618 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2619 | { | |
2620 | struct spu_context *ctx = s->private; | |
2621 | u64 mfc_control_RW; | |
2622 | ||
2623 | mutex_lock(&ctx->state_mutex); | |
2624 | if (ctx->spu) { | |
2625 | struct spu *spu = ctx->spu; | |
2626 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2627 | ||
2628 | spin_lock_irq(&spu->register_lock); | |
2629 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2630 | spin_unlock_irq(&spu->register_lock); | |
2631 | } else { | |
2632 | struct spu_state *csa = &ctx->csa; | |
2633 | ||
2634 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2635 | } | |
2636 | ||
2637 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2638 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2639 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2640 | ctx->flags, | |
2641 | ctx->sched_flags, | |
2642 | ctx->prio, | |
2643 | ctx->time_slice, | |
2644 | ctx->spu ? ctx->spu->number : -1, | |
2645 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2646 | ctx->csa.class_0_pending, | |
2647 | ctx->csa.class_0_dar, | |
2648 | ctx->csa.class_1_dsisr, | |
2649 | mfc_control_RW, | |
2650 | ctx->ops->runcntl_read(ctx), | |
2651 | ctx->ops->status_read(ctx)); | |
2652 | ||
2653 | mutex_unlock(&ctx->state_mutex); | |
2654 | ||
2655 | return 0; | |
2656 | } | |
2657 | ||
2658 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2659 | { | |
2660 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2661 | } | |
2662 | ||
2663 | static const struct file_operations spufs_ctx_fops = { | |
2664 | .open = spufs_ctx_open, | |
2665 | .read = seq_read, | |
2666 | .llseek = seq_lseek, | |
2667 | .release = single_release, | |
2668 | }; | |
2669 | ||
74254647 | 2670 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2671 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2672 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2673 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2674 | { "mbox", &spufs_mbox_fops, 0444, }, |
2675 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2676 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2677 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2678 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2679 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2680 | { "signal1", &spufs_signal1_fops, 0666, }, |
2681 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2682 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2683 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2684 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2685 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2686 | { "lslr", &spufs_lslr_ops, 0444, }, |
2687 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2688 | { "mss", &spufs_mss_fops, 0666, }, | |
2689 | { "npc", &spufs_npc_ops, 0666, }, | |
2690 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2691 | { "decr", &spufs_decr_ops, 0666, }, |
2692 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2693 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2694 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2695 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2696 | { "phys-id", &spufs_id_ops, 0666, }, |
2697 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2698 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2699 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2700 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2701 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2702 | sizeof(struct spu_dma_info), }, | |
2703 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2704 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2705 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2706 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2707 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2708 | {}, |
2709 | }; | |
5737edd1 | 2710 | |
74254647 | 2711 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2712 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2713 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2714 | { "mbox", &spufs_mbox_fops, 0444, }, |
2715 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2716 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2717 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2718 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2719 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2720 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2721 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2722 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2723 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2724 | { "mss", &spufs_mss_fops, 0666, }, | |
2725 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2726 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2727 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2728 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2729 | { "phys-id", &spufs_id_ops, 0666, }, |
2730 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2731 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2732 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2733 | {}, |
2734 | }; | |
2735 | ||
74254647 | 2736 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2737 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2738 | {}, |
2739 | }; | |
bf1ab978 | 2740 | |
74254647 | 2741 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2742 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2743 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2744 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2745 | { "decr", NULL, spufs_decr_get, 19 }, | |
2746 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2747 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2748 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2749 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2750 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2751 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2752 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2753 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2754 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2755 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2756 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2757 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2758 | { "proxydma_info", __spufs_proxydma_info_read, | |
2759 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2760 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2761 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2762 | { NULL }, |
bf1ab978 | 2763 | }; |