Commit | Line | Data |
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67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
27 | #include <linux/module.h> | |
d88cfffa | 28 | #include <linux/pagemap.h> |
67207b96 | 29 | #include <linux/poll.h> |
5110459f | 30 | #include <linux/ptrace.h> |
cbe709c1 | 31 | #include <linux/seq_file.h> |
038200cf | 32 | #include <linux/marker.h> |
67207b96 AB |
33 | |
34 | #include <asm/io.h> | |
dfe1e09f | 35 | #include <asm/time.h> |
67207b96 | 36 | #include <asm/spu.h> |
b9e3bd77 | 37 | #include <asm/spu_info.h> |
67207b96 AB |
38 | #include <asm/uaccess.h> |
39 | ||
40 | #include "spufs.h" | |
41 | ||
27d5bf2a BH |
42 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
43 | ||
197b1a82 CH |
44 | /* Simple attribute files */ |
45 | struct spufs_attr { | |
46 | int (*get)(void *, u64 *); | |
47 | int (*set)(void *, u64); | |
48 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
49 | char set_buf[24]; | |
50 | void *data; | |
51 | const char *fmt; /* format for read operation */ | |
52 | struct mutex mutex; /* protects access to these buffers */ | |
53 | }; | |
54 | ||
55 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
56 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
57 | const char *fmt) | |
58 | { | |
59 | struct spufs_attr *attr; | |
60 | ||
61 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
62 | if (!attr) | |
63 | return -ENOMEM; | |
64 | ||
65 | attr->get = get; | |
66 | attr->set = set; | |
67 | attr->data = inode->i_private; | |
68 | attr->fmt = fmt; | |
69 | mutex_init(&attr->mutex); | |
70 | file->private_data = attr; | |
71 | ||
72 | return nonseekable_open(inode, file); | |
73 | } | |
74 | ||
75 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
76 | { | |
77 | kfree(file->private_data); | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
82 | size_t len, loff_t *ppos) | |
83 | { | |
84 | struct spufs_attr *attr; | |
85 | size_t size; | |
86 | ssize_t ret; | |
87 | ||
88 | attr = file->private_data; | |
89 | if (!attr->get) | |
90 | return -EACCES; | |
91 | ||
92 | ret = mutex_lock_interruptible(&attr->mutex); | |
93 | if (ret) | |
94 | return ret; | |
95 | ||
96 | if (*ppos) { /* continued read */ | |
97 | size = strlen(attr->get_buf); | |
98 | } else { /* first read */ | |
99 | u64 val; | |
100 | ret = attr->get(attr->data, &val); | |
101 | if (ret) | |
102 | goto out; | |
103 | ||
104 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
105 | attr->fmt, (unsigned long long)val); | |
106 | } | |
107 | ||
108 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
109 | out: | |
110 | mutex_unlock(&attr->mutex); | |
111 | return ret; | |
112 | } | |
113 | ||
114 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
115 | size_t len, loff_t *ppos) | |
116 | { | |
117 | struct spufs_attr *attr; | |
118 | u64 val; | |
119 | size_t size; | |
120 | ssize_t ret; | |
121 | ||
122 | attr = file->private_data; | |
123 | if (!attr->set) | |
124 | return -EACCES; | |
125 | ||
126 | ret = mutex_lock_interruptible(&attr->mutex); | |
127 | if (ret) | |
128 | return ret; | |
129 | ||
130 | ret = -EFAULT; | |
131 | size = min(sizeof(attr->set_buf) - 1, len); | |
132 | if (copy_from_user(attr->set_buf, buf, size)) | |
133 | goto out; | |
134 | ||
135 | ret = len; /* claim we got the whole input */ | |
136 | attr->set_buf[size] = '\0'; | |
137 | val = simple_strtol(attr->set_buf, NULL, 0); | |
138 | attr->set(attr->data, val); | |
139 | out: | |
140 | mutex_unlock(&attr->mutex); | |
141 | return ret; | |
142 | } | |
143 | ||
144 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
145 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
146 | { \ | |
147 | __simple_attr_check_format(__fmt, 0ull); \ | |
148 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
149 | } \ | |
150 | static struct file_operations __fops = { \ | |
151 | .owner = THIS_MODULE, \ | |
152 | .open = __fops ## _open, \ | |
153 | .release = spufs_attr_release, \ | |
154 | .read = spufs_attr_read, \ | |
155 | .write = spufs_attr_write, \ | |
156 | }; | |
157 | ||
cbe709c1 | 158 | |
67207b96 AB |
159 | static int |
160 | spufs_mem_open(struct inode *inode, struct file *file) | |
161 | { | |
162 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 163 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 164 | |
47d3a5fa | 165 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 166 | file->private_data = ctx; |
43c2bbd9 CH |
167 | if (!i->i_openers++) |
168 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 169 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
170 | return 0; |
171 | } | |
172 | ||
173 | static int | |
174 | spufs_mem_release(struct inode *inode, struct file *file) | |
175 | { | |
176 | struct spufs_inode_info *i = SPUFS_I(inode); | |
177 | struct spu_context *ctx = i->i_ctx; | |
178 | ||
47d3a5fa | 179 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
180 | if (!--i->i_openers) |
181 | ctx->local_store = NULL; | |
47d3a5fa | 182 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
183 | return 0; |
184 | } | |
185 | ||
bf1ab978 DGM |
186 | static ssize_t |
187 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
188 | size_t size, loff_t *pos) | |
189 | { | |
190 | char *local_store = ctx->ops->get_ls(ctx); | |
191 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
192 | LS_SIZE); | |
193 | } | |
194 | ||
67207b96 AB |
195 | static ssize_t |
196 | spufs_mem_read(struct file *file, char __user *buffer, | |
197 | size_t size, loff_t *pos) | |
198 | { | |
bf1ab978 | 199 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 200 | ssize_t ret; |
67207b96 | 201 | |
c9101bdb CH |
202 | ret = spu_acquire(ctx); |
203 | if (ret) | |
204 | return ret; | |
bf1ab978 | 205 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 206 | spu_release(ctx); |
c9101bdb | 207 | |
67207b96 AB |
208 | return ret; |
209 | } | |
210 | ||
211 | static ssize_t | |
212 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 213 | size_t size, loff_t *ppos) |
67207b96 AB |
214 | { |
215 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 216 | char *local_store; |
aa0ed2bd | 217 | loff_t pos = *ppos; |
8b3d6663 | 218 | int ret; |
67207b96 | 219 | |
aa0ed2bd AB |
220 | if (pos < 0) |
221 | return -EINVAL; | |
222 | if (pos > LS_SIZE) | |
67207b96 | 223 | return -EFBIG; |
aa0ed2bd AB |
224 | if (size > LS_SIZE - pos) |
225 | size = LS_SIZE - pos; | |
8b3d6663 | 226 | |
c9101bdb CH |
227 | ret = spu_acquire(ctx); |
228 | if (ret) | |
229 | return ret; | |
230 | ||
8b3d6663 | 231 | local_store = ctx->ops->get_ls(ctx); |
aa0ed2bd | 232 | ret = copy_from_user(local_store + pos, buffer, size); |
8b3d6663 | 233 | spu_release(ctx); |
aa0ed2bd AB |
234 | |
235 | if (ret) | |
236 | return -EFAULT; | |
237 | *ppos = pos + size; | |
238 | return size; | |
67207b96 AB |
239 | } |
240 | ||
b1e2270f NP |
241 | static int |
242 | spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
8b3d6663 | 243 | { |
f1fa74f4 | 244 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
245 | unsigned long address = (unsigned long)vmf->virtual_address; |
246 | unsigned long pfn, offset; | |
247 | ||
f1fa74f4 BH |
248 | #ifdef CONFIG_SPU_FS_64K_LS |
249 | struct spu_state *csa = &ctx->csa; | |
250 | int psize; | |
251 | ||
252 | /* Check what page size we are using */ | |
253 | psize = get_slice_psize(vma->vm_mm, address); | |
254 | ||
255 | /* Some sanity checking */ | |
256 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); | |
257 | ||
258 | /* Wow, 64K, cool, we need to align the address though */ | |
259 | if (csa->use_big_pages) { | |
260 | BUG_ON(vma->vm_start & 0xffff); | |
261 | address &= ~0xfffful; | |
262 | } | |
263 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
8b3d6663 | 264 | |
b1e2270f | 265 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 266 | if (offset >= LS_SIZE) |
b1e2270f | 267 | return VM_FAULT_SIGBUS; |
128b8546 | 268 | |
b1e2270f NP |
269 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
270 | address, offset); | |
f1fa74f4 | 271 | |
c9101bdb | 272 | if (spu_acquire(ctx)) |
b1e2270f | 273 | return VM_FAULT_NOPAGE; |
8b3d6663 | 274 | |
ac91cb8d | 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 | |
8b3d6663 | 312 | static 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 | ||
439 | static 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 | ||
571 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); | |
572 | if (size <= 0) | |
573 | return -EFBIG; | |
574 | *pos += size; | |
575 | ||
c9101bdb CH |
576 | ret = spu_acquire_saved(ctx); |
577 | if (ret) | |
578 | return ret; | |
8b3d6663 AB |
579 | |
580 | ret = copy_from_user(lscsa->gprs + *pos - size, | |
581 | buffer, size) ? -EFAULT : size; | |
582 | ||
27b1ea09 | 583 | spu_release_saved(ctx); |
8b3d6663 AB |
584 | return ret; |
585 | } | |
586 | ||
5dfe4c96 | 587 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
588 | .open = spufs_regs_open, |
589 | .read = spufs_regs_read, | |
590 | .write = spufs_regs_write, | |
67207b96 AB |
591 | .llseek = generic_file_llseek, |
592 | }; | |
593 | ||
bf1ab978 DGM |
594 | static ssize_t |
595 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
596 | size_t size, loff_t * pos) | |
597 | { | |
598 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
599 | return simple_read_from_buffer(buffer, size, pos, | |
600 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
601 | } | |
602 | ||
8b3d6663 AB |
603 | static ssize_t |
604 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
605 | size_t size, loff_t * pos) | |
606 | { | |
8b3d6663 | 607 | int ret; |
bf1ab978 | 608 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 609 | |
c9101bdb CH |
610 | ret = spu_acquire_saved(ctx); |
611 | if (ret) | |
612 | return ret; | |
bf1ab978 | 613 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 614 | spu_release_saved(ctx); |
8b3d6663 AB |
615 | return ret; |
616 | } | |
617 | ||
618 | static ssize_t | |
619 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
620 | size_t size, loff_t * pos) | |
621 | { | |
622 | struct spu_context *ctx = file->private_data; | |
623 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
624 | int ret; | |
625 | ||
626 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); | |
627 | if (size <= 0) | |
628 | return -EFBIG; | |
8b3d6663 | 629 | |
c9101bdb CH |
630 | ret = spu_acquire_saved(ctx); |
631 | if (ret) | |
632 | return ret; | |
8b3d6663 | 633 | |
c9101bdb | 634 | *pos += size; |
8b3d6663 AB |
635 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
636 | buffer, size) ? -EFAULT : size; | |
637 | ||
27b1ea09 | 638 | spu_release_saved(ctx); |
8b3d6663 AB |
639 | return ret; |
640 | } | |
641 | ||
5dfe4c96 | 642 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
643 | .open = spufs_regs_open, |
644 | .read = spufs_fpcr_read, | |
645 | .write = spufs_fpcr_write, | |
646 | .llseek = generic_file_llseek, | |
647 | }; | |
648 | ||
67207b96 AB |
649 | /* generic open function for all pipe-like files */ |
650 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
651 | { | |
652 | struct spufs_inode_info *i = SPUFS_I(inode); | |
653 | file->private_data = i->i_ctx; | |
654 | ||
655 | return nonseekable_open(inode, file); | |
656 | } | |
657 | ||
cdcc89bb AB |
658 | /* |
659 | * Read as many bytes from the mailbox as possible, until | |
660 | * one of the conditions becomes true: | |
661 | * | |
662 | * - no more data available in the mailbox | |
663 | * - end of the user provided buffer | |
664 | * - end of the mapped area | |
665 | */ | |
67207b96 AB |
666 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
667 | size_t len, loff_t *pos) | |
668 | { | |
8b3d6663 | 669 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
670 | u32 mbox_data, __user *udata; |
671 | ssize_t count; | |
67207b96 AB |
672 | |
673 | if (len < 4) | |
674 | return -EINVAL; | |
675 | ||
cdcc89bb AB |
676 | if (!access_ok(VERIFY_WRITE, buf, len)) |
677 | return -EFAULT; | |
678 | ||
679 | udata = (void __user *)buf; | |
680 | ||
c9101bdb CH |
681 | count = spu_acquire(ctx); |
682 | if (count) | |
683 | return count; | |
684 | ||
274cef5e | 685 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
686 | int ret; |
687 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
688 | if (ret == 0) | |
689 | break; | |
690 | ||
691 | /* | |
692 | * at the end of the mapped area, we can fault | |
693 | * but still need to return the data we have | |
694 | * read successfully so far. | |
695 | */ | |
696 | ret = __put_user(mbox_data, udata); | |
697 | if (ret) { | |
698 | if (!count) | |
699 | count = -EFAULT; | |
700 | break; | |
701 | } | |
702 | } | |
8b3d6663 | 703 | spu_release(ctx); |
67207b96 | 704 | |
cdcc89bb AB |
705 | if (!count) |
706 | count = -EAGAIN; | |
67207b96 | 707 | |
cdcc89bb | 708 | return count; |
67207b96 AB |
709 | } |
710 | ||
5dfe4c96 | 711 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
712 | .open = spufs_pipe_open, |
713 | .read = spufs_mbox_read, | |
714 | }; | |
715 | ||
716 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
717 | size_t len, loff_t *pos) | |
718 | { | |
8b3d6663 | 719 | struct spu_context *ctx = file->private_data; |
c9101bdb | 720 | ssize_t ret; |
67207b96 AB |
721 | u32 mbox_stat; |
722 | ||
723 | if (len < 4) | |
724 | return -EINVAL; | |
725 | ||
c9101bdb CH |
726 | ret = spu_acquire(ctx); |
727 | if (ret) | |
728 | return ret; | |
8b3d6663 AB |
729 | |
730 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
731 | ||
732 | spu_release(ctx); | |
67207b96 AB |
733 | |
734 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
735 | return -EFAULT; | |
736 | ||
737 | return 4; | |
738 | } | |
739 | ||
5dfe4c96 | 740 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
741 | .open = spufs_pipe_open, |
742 | .read = spufs_mbox_stat_read, | |
743 | }; | |
744 | ||
745 | /* low-level ibox access function */ | |
8b3d6663 | 746 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 747 | { |
8b3d6663 AB |
748 | return ctx->ops->ibox_read(ctx, data); |
749 | } | |
67207b96 | 750 | |
8b3d6663 AB |
751 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
752 | { | |
753 | struct spu_context *ctx = file->private_data; | |
67207b96 | 754 | |
8b3d6663 | 755 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 756 | } |
67207b96 | 757 | |
8b3d6663 AB |
758 | /* interrupt-level ibox callback function. */ |
759 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 760 | { |
8b3d6663 AB |
761 | struct spu_context *ctx = spu->ctx; |
762 | ||
e65c2f6f LB |
763 | if (!ctx) |
764 | return; | |
765 | ||
8b3d6663 AB |
766 | wake_up_all(&ctx->ibox_wq); |
767 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
768 | } |
769 | ||
cdcc89bb AB |
770 | /* |
771 | * Read as many bytes from the interrupt mailbox as possible, until | |
772 | * one of the conditions becomes true: | |
773 | * | |
774 | * - no more data available in the mailbox | |
775 | * - end of the user provided buffer | |
776 | * - end of the mapped area | |
777 | * | |
778 | * If the file is opened without O_NONBLOCK, we wait here until | |
779 | * any data is available, but return when we have been able to | |
780 | * read something. | |
781 | */ | |
67207b96 AB |
782 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
783 | size_t len, loff_t *pos) | |
784 | { | |
8b3d6663 | 785 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
786 | u32 ibox_data, __user *udata; |
787 | ssize_t count; | |
67207b96 AB |
788 | |
789 | if (len < 4) | |
790 | return -EINVAL; | |
791 | ||
cdcc89bb AB |
792 | if (!access_ok(VERIFY_WRITE, buf, len)) |
793 | return -EFAULT; | |
794 | ||
795 | udata = (void __user *)buf; | |
796 | ||
c9101bdb CH |
797 | count = spu_acquire(ctx); |
798 | if (count) | |
eebead5b | 799 | goto out; |
67207b96 | 800 | |
cdcc89bb AB |
801 | /* wait only for the first element */ |
802 | count = 0; | |
67207b96 | 803 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 804 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 805 | count = -EAGAIN; |
eebead5b CH |
806 | goto out_unlock; |
807 | } | |
67207b96 | 808 | } else { |
cdcc89bb | 809 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
810 | if (count) |
811 | goto out; | |
67207b96 AB |
812 | } |
813 | ||
cdcc89bb AB |
814 | /* if we can't write at all, return -EFAULT */ |
815 | count = __put_user(ibox_data, udata); | |
816 | if (count) | |
eebead5b | 817 | goto out_unlock; |
8b3d6663 | 818 | |
cdcc89bb AB |
819 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
820 | int ret; | |
821 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
822 | if (ret == 0) | |
823 | break; | |
824 | /* | |
825 | * at the end of the mapped area, we can fault | |
826 | * but still need to return the data we have | |
827 | * read successfully so far. | |
828 | */ | |
829 | ret = __put_user(ibox_data, udata); | |
830 | if (ret) | |
831 | break; | |
832 | } | |
67207b96 | 833 | |
eebead5b | 834 | out_unlock: |
cdcc89bb | 835 | spu_release(ctx); |
eebead5b | 836 | out: |
cdcc89bb | 837 | return count; |
67207b96 AB |
838 | } |
839 | ||
840 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
841 | { | |
8b3d6663 | 842 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
843 | unsigned int mask; |
844 | ||
8b3d6663 | 845 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 846 | |
c9101bdb CH |
847 | /* |
848 | * For now keep this uninterruptible and also ignore the rule | |
849 | * that poll should not sleep. Will be fixed later. | |
850 | */ | |
851 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
852 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
853 | spu_release(ctx); | |
67207b96 AB |
854 | |
855 | return mask; | |
856 | } | |
857 | ||
5dfe4c96 | 858 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
859 | .open = spufs_pipe_open, |
860 | .read = spufs_ibox_read, | |
861 | .poll = spufs_ibox_poll, | |
862 | .fasync = spufs_ibox_fasync, | |
863 | }; | |
864 | ||
865 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
866 | size_t len, loff_t *pos) | |
867 | { | |
8b3d6663 | 868 | struct spu_context *ctx = file->private_data; |
c9101bdb | 869 | ssize_t ret; |
67207b96 AB |
870 | u32 ibox_stat; |
871 | ||
872 | if (len < 4) | |
873 | return -EINVAL; | |
874 | ||
c9101bdb CH |
875 | ret = spu_acquire(ctx); |
876 | if (ret) | |
877 | return ret; | |
8b3d6663 AB |
878 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
879 | spu_release(ctx); | |
67207b96 AB |
880 | |
881 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
882 | return -EFAULT; | |
883 | ||
884 | return 4; | |
885 | } | |
886 | ||
5dfe4c96 | 887 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
888 | .open = spufs_pipe_open, |
889 | .read = spufs_ibox_stat_read, | |
890 | }; | |
891 | ||
892 | /* low-level mailbox write */ | |
8b3d6663 | 893 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 894 | { |
8b3d6663 AB |
895 | return ctx->ops->wbox_write(ctx, data); |
896 | } | |
67207b96 | 897 | |
8b3d6663 AB |
898 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
899 | { | |
900 | struct spu_context *ctx = file->private_data; | |
901 | int ret; | |
67207b96 | 902 | |
8b3d6663 | 903 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 904 | |
67207b96 AB |
905 | return ret; |
906 | } | |
67207b96 | 907 | |
8b3d6663 AB |
908 | /* interrupt-level wbox callback function. */ |
909 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 910 | { |
8b3d6663 AB |
911 | struct spu_context *ctx = spu->ctx; |
912 | ||
e65c2f6f LB |
913 | if (!ctx) |
914 | return; | |
915 | ||
8b3d6663 AB |
916 | wake_up_all(&ctx->wbox_wq); |
917 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
918 | } |
919 | ||
cdcc89bb AB |
920 | /* |
921 | * Write as many bytes to the interrupt mailbox as possible, until | |
922 | * one of the conditions becomes true: | |
923 | * | |
924 | * - the mailbox is full | |
925 | * - end of the user provided buffer | |
926 | * - end of the mapped area | |
927 | * | |
928 | * If the file is opened without O_NONBLOCK, we wait here until | |
929 | * space is availabyl, but return when we have been able to | |
930 | * write something. | |
931 | */ | |
67207b96 AB |
932 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
933 | size_t len, loff_t *pos) | |
934 | { | |
8b3d6663 | 935 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
936 | u32 wbox_data, __user *udata; |
937 | ssize_t count; | |
67207b96 AB |
938 | |
939 | if (len < 4) | |
940 | return -EINVAL; | |
941 | ||
cdcc89bb AB |
942 | udata = (void __user *)buf; |
943 | if (!access_ok(VERIFY_READ, buf, len)) | |
944 | return -EFAULT; | |
945 | ||
946 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
947 | return -EFAULT; |
948 | ||
c9101bdb CH |
949 | count = spu_acquire(ctx); |
950 | if (count) | |
eebead5b | 951 | goto out; |
8b3d6663 | 952 | |
cdcc89bb AB |
953 | /* |
954 | * make sure we can at least write one element, by waiting | |
955 | * in case of !O_NONBLOCK | |
956 | */ | |
957 | count = 0; | |
67207b96 | 958 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 959 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 960 | count = -EAGAIN; |
eebead5b CH |
961 | goto out_unlock; |
962 | } | |
67207b96 | 963 | } else { |
cdcc89bb | 964 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
965 | if (count) |
966 | goto out; | |
67207b96 AB |
967 | } |
968 | ||
8b3d6663 | 969 | |
96de0e25 | 970 | /* write as much as possible */ |
cdcc89bb AB |
971 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
972 | int ret; | |
973 | ret = __get_user(wbox_data, udata); | |
974 | if (ret) | |
975 | break; | |
976 | ||
977 | ret = spu_wbox_write(ctx, wbox_data); | |
978 | if (ret == 0) | |
979 | break; | |
980 | } | |
981 | ||
eebead5b | 982 | out_unlock: |
cdcc89bb | 983 | spu_release(ctx); |
eebead5b | 984 | out: |
cdcc89bb | 985 | return count; |
67207b96 AB |
986 | } |
987 | ||
988 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
989 | { | |
8b3d6663 | 990 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
991 | unsigned int mask; |
992 | ||
8b3d6663 | 993 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 994 | |
c9101bdb CH |
995 | /* |
996 | * For now keep this uninterruptible and also ignore the rule | |
997 | * that poll should not sleep. Will be fixed later. | |
998 | */ | |
999 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
1000 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
1001 | spu_release(ctx); | |
67207b96 AB |
1002 | |
1003 | return mask; | |
1004 | } | |
1005 | ||
5dfe4c96 | 1006 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
1007 | .open = spufs_pipe_open, |
1008 | .write = spufs_wbox_write, | |
1009 | .poll = spufs_wbox_poll, | |
1010 | .fasync = spufs_wbox_fasync, | |
1011 | }; | |
1012 | ||
1013 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
1014 | size_t len, loff_t *pos) | |
1015 | { | |
8b3d6663 | 1016 | struct spu_context *ctx = file->private_data; |
c9101bdb | 1017 | ssize_t ret; |
67207b96 AB |
1018 | u32 wbox_stat; |
1019 | ||
1020 | if (len < 4) | |
1021 | return -EINVAL; | |
1022 | ||
c9101bdb CH |
1023 | ret = spu_acquire(ctx); |
1024 | if (ret) | |
1025 | return ret; | |
8b3d6663 AB |
1026 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
1027 | spu_release(ctx); | |
67207b96 AB |
1028 | |
1029 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
1030 | return -EFAULT; | |
1031 | ||
1032 | return 4; | |
1033 | } | |
1034 | ||
5dfe4c96 | 1035 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
1036 | .open = spufs_pipe_open, |
1037 | .read = spufs_wbox_stat_read, | |
1038 | }; | |
1039 | ||
6df10a82 MN |
1040 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
1041 | { | |
1042 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1043 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1044 | |
47d3a5fa | 1045 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1046 | file->private_data = ctx; |
43c2bbd9 CH |
1047 | if (!i->i_openers++) |
1048 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 1049 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1050 | return nonseekable_open(inode, file); |
1051 | } | |
1052 | ||
43c2bbd9 CH |
1053 | static int |
1054 | spufs_signal1_release(struct inode *inode, struct file *file) | |
1055 | { | |
1056 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1057 | struct spu_context *ctx = i->i_ctx; | |
1058 | ||
47d3a5fa | 1059 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1060 | if (!--i->i_openers) |
1061 | ctx->signal1 = NULL; | |
47d3a5fa | 1062 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1063 | return 0; |
1064 | } | |
1065 | ||
bf1ab978 | 1066 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1067 | size_t len, loff_t *pos) |
1068 | { | |
17f88ceb | 1069 | int ret = 0; |
67207b96 AB |
1070 | u32 data; |
1071 | ||
67207b96 AB |
1072 | if (len < 4) |
1073 | return -EINVAL; | |
1074 | ||
17f88ceb DGM |
1075 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1076 | data = ctx->csa.spu_chnldata_RW[3]; | |
1077 | ret = 4; | |
1078 | } | |
8b3d6663 | 1079 | |
17f88ceb DGM |
1080 | if (!ret) |
1081 | goto out; | |
1082 | ||
67207b96 AB |
1083 | if (copy_to_user(buf, &data, 4)) |
1084 | return -EFAULT; | |
1085 | ||
17f88ceb DGM |
1086 | out: |
1087 | return ret; | |
67207b96 AB |
1088 | } |
1089 | ||
bf1ab978 DGM |
1090 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1091 | size_t len, loff_t *pos) | |
1092 | { | |
1093 | int ret; | |
1094 | struct spu_context *ctx = file->private_data; | |
1095 | ||
c9101bdb CH |
1096 | ret = spu_acquire_saved(ctx); |
1097 | if (ret) | |
1098 | return ret; | |
bf1ab978 | 1099 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1100 | spu_release_saved(ctx); |
bf1ab978 DGM |
1101 | |
1102 | return ret; | |
1103 | } | |
1104 | ||
67207b96 AB |
1105 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1106 | size_t len, loff_t *pos) | |
1107 | { | |
1108 | struct spu_context *ctx; | |
c9101bdb | 1109 | ssize_t ret; |
67207b96 AB |
1110 | u32 data; |
1111 | ||
1112 | ctx = file->private_data; | |
67207b96 AB |
1113 | |
1114 | if (len < 4) | |
1115 | return -EINVAL; | |
1116 | ||
1117 | if (copy_from_user(&data, buf, 4)) | |
1118 | return -EFAULT; | |
1119 | ||
c9101bdb CH |
1120 | ret = spu_acquire(ctx); |
1121 | if (ret) | |
1122 | return ret; | |
8b3d6663 AB |
1123 | ctx->ops->signal1_write(ctx, data); |
1124 | spu_release(ctx); | |
67207b96 AB |
1125 | |
1126 | return 4; | |
1127 | } | |
1128 | ||
b1e2270f NP |
1129 | static int |
1130 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1131 | { |
87ff6090 JK |
1132 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1133 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1134 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1135 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1136 | * signal 1 and 2 area | |
1137 | */ | |
87ff6090 | 1138 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1139 | #else |
1140 | #error unsupported page size | |
1141 | #endif | |
6df10a82 MN |
1142 | } |
1143 | ||
1144 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { | |
b1e2270f | 1145 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1146 | }; |
1147 | ||
1148 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1149 | { | |
1150 | if (!(vma->vm_flags & VM_SHARED)) | |
1151 | return -EINVAL; | |
1152 | ||
78bde53e | 1153 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1154 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1155 | |
1156 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1157 | return 0; | |
1158 | } | |
6df10a82 | 1159 | |
5dfe4c96 | 1160 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1161 | .open = spufs_signal1_open, |
43c2bbd9 | 1162 | .release = spufs_signal1_release, |
67207b96 AB |
1163 | .read = spufs_signal1_read, |
1164 | .write = spufs_signal1_write, | |
6df10a82 | 1165 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
1166 | }; |
1167 | ||
d054b36f JK |
1168 | static const struct file_operations spufs_signal1_nosched_fops = { |
1169 | .open = spufs_signal1_open, | |
1170 | .release = spufs_signal1_release, | |
1171 | .write = spufs_signal1_write, | |
1172 | .mmap = spufs_signal1_mmap, | |
1173 | }; | |
1174 | ||
6df10a82 MN |
1175 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1176 | { | |
1177 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1178 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1179 | |
47d3a5fa | 1180 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1181 | file->private_data = ctx; |
43c2bbd9 CH |
1182 | if (!i->i_openers++) |
1183 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1184 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1185 | return nonseekable_open(inode, file); |
1186 | } | |
1187 | ||
43c2bbd9 CH |
1188 | static int |
1189 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1190 | { | |
1191 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1192 | struct spu_context *ctx = i->i_ctx; | |
1193 | ||
47d3a5fa | 1194 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1195 | if (!--i->i_openers) |
1196 | ctx->signal2 = NULL; | |
47d3a5fa | 1197 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1198 | return 0; |
1199 | } | |
1200 | ||
bf1ab978 | 1201 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1202 | size_t len, loff_t *pos) |
1203 | { | |
17f88ceb | 1204 | int ret = 0; |
67207b96 AB |
1205 | u32 data; |
1206 | ||
67207b96 AB |
1207 | if (len < 4) |
1208 | return -EINVAL; | |
1209 | ||
17f88ceb DGM |
1210 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1211 | data = ctx->csa.spu_chnldata_RW[4]; | |
1212 | ret = 4; | |
1213 | } | |
8b3d6663 | 1214 | |
17f88ceb DGM |
1215 | if (!ret) |
1216 | goto out; | |
1217 | ||
67207b96 AB |
1218 | if (copy_to_user(buf, &data, 4)) |
1219 | return -EFAULT; | |
1220 | ||
17f88ceb | 1221 | out: |
bf1ab978 DGM |
1222 | return ret; |
1223 | } | |
1224 | ||
1225 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1226 | size_t len, loff_t *pos) | |
1227 | { | |
1228 | struct spu_context *ctx = file->private_data; | |
1229 | int ret; | |
1230 | ||
c9101bdb CH |
1231 | ret = spu_acquire_saved(ctx); |
1232 | if (ret) | |
1233 | return ret; | |
bf1ab978 | 1234 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1235 | spu_release_saved(ctx); |
bf1ab978 DGM |
1236 | |
1237 | return ret; | |
67207b96 AB |
1238 | } |
1239 | ||
1240 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1241 | size_t len, loff_t *pos) | |
1242 | { | |
1243 | struct spu_context *ctx; | |
c9101bdb | 1244 | ssize_t ret; |
67207b96 AB |
1245 | u32 data; |
1246 | ||
1247 | ctx = file->private_data; | |
67207b96 AB |
1248 | |
1249 | if (len < 4) | |
1250 | return -EINVAL; | |
1251 | ||
1252 | if (copy_from_user(&data, buf, 4)) | |
1253 | return -EFAULT; | |
1254 | ||
c9101bdb CH |
1255 | ret = spu_acquire(ctx); |
1256 | if (ret) | |
1257 | return ret; | |
8b3d6663 AB |
1258 | ctx->ops->signal2_write(ctx, data); |
1259 | spu_release(ctx); | |
67207b96 AB |
1260 | |
1261 | return 4; | |
1262 | } | |
1263 | ||
27d5bf2a | 1264 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1265 | static int |
1266 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1267 | { |
87ff6090 JK |
1268 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1269 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1270 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1271 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1272 | * signal 1 and 2 area | |
1273 | */ | |
87ff6090 | 1274 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1275 | #else |
1276 | #error unsupported page size | |
1277 | #endif | |
6df10a82 MN |
1278 | } |
1279 | ||
1280 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { | |
b1e2270f | 1281 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1282 | }; |
1283 | ||
1284 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1285 | { | |
1286 | if (!(vma->vm_flags & VM_SHARED)) | |
1287 | return -EINVAL; | |
1288 | ||
78bde53e | 1289 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1290 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1291 | |
1292 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1293 | return 0; | |
1294 | } | |
27d5bf2a BH |
1295 | #else /* SPUFS_MMAP_4K */ |
1296 | #define spufs_signal2_mmap NULL | |
1297 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1298 | |
5dfe4c96 | 1299 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1300 | .open = spufs_signal2_open, |
43c2bbd9 | 1301 | .release = spufs_signal2_release, |
67207b96 AB |
1302 | .read = spufs_signal2_read, |
1303 | .write = spufs_signal2_write, | |
6df10a82 | 1304 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
1305 | }; |
1306 | ||
d054b36f JK |
1307 | static const struct file_operations spufs_signal2_nosched_fops = { |
1308 | .open = spufs_signal2_open, | |
1309 | .release = spufs_signal2_release, | |
1310 | .write = spufs_signal2_write, | |
1311 | .mmap = spufs_signal2_mmap, | |
1312 | }; | |
1313 | ||
104f0cc2 ME |
1314 | /* |
1315 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1316 | * work of acquiring (or not) the SPU context before calling through | |
1317 | * to the actual get routine. The set routine is called directly. | |
1318 | */ | |
1319 | #define SPU_ATTR_NOACQUIRE 0 | |
1320 | #define SPU_ATTR_ACQUIRE 1 | |
1321 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1322 | ||
1323 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1324 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1325 | { \ |
1326 | struct spu_context *ctx = data; \ | |
c9101bdb | 1327 | int ret = 0; \ |
104f0cc2 ME |
1328 | \ |
1329 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1330 | ret = spu_acquire(ctx); \ |
1331 | if (ret) \ | |
1332 | return ret; \ | |
197b1a82 | 1333 | *val = __get(ctx); \ |
104f0cc2 ME |
1334 | spu_release(ctx); \ |
1335 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1336 | ret = spu_acquire_saved(ctx); \ |
1337 | if (ret) \ | |
1338 | return ret; \ | |
197b1a82 | 1339 | *val = __get(ctx); \ |
104f0cc2 ME |
1340 | spu_release_saved(ctx); \ |
1341 | } else \ | |
197b1a82 | 1342 | *val = __get(ctx); \ |
104f0cc2 | 1343 | \ |
197b1a82 | 1344 | return 0; \ |
104f0cc2 | 1345 | } \ |
197b1a82 | 1346 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1347 | |
197b1a82 | 1348 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1349 | { |
1350 | struct spu_context *ctx = data; | |
c9101bdb | 1351 | int ret; |
67207b96 | 1352 | |
c9101bdb CH |
1353 | ret = spu_acquire(ctx); |
1354 | if (ret) | |
1355 | return ret; | |
8b3d6663 AB |
1356 | ctx->ops->signal1_type_set(ctx, val); |
1357 | spu_release(ctx); | |
197b1a82 CH |
1358 | |
1359 | return 0; | |
67207b96 AB |
1360 | } |
1361 | ||
104f0cc2 | 1362 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1363 | { |
bf1ab978 DGM |
1364 | return ctx->ops->signal1_type_get(ctx); |
1365 | } | |
104f0cc2 | 1366 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1367 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1368 | |
67207b96 | 1369 | |
197b1a82 | 1370 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1371 | { |
1372 | struct spu_context *ctx = data; | |
c9101bdb | 1373 | int ret; |
67207b96 | 1374 | |
c9101bdb CH |
1375 | ret = spu_acquire(ctx); |
1376 | if (ret) | |
1377 | return ret; | |
8b3d6663 AB |
1378 | ctx->ops->signal2_type_set(ctx, val); |
1379 | spu_release(ctx); | |
197b1a82 CH |
1380 | |
1381 | return 0; | |
67207b96 AB |
1382 | } |
1383 | ||
104f0cc2 | 1384 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1385 | { |
bf1ab978 DGM |
1386 | return ctx->ops->signal2_type_get(ctx); |
1387 | } | |
104f0cc2 | 1388 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1389 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1390 | |
27d5bf2a | 1391 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1392 | static int |
1393 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1394 | { |
87ff6090 | 1395 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b | 1396 | } |
1397 | ||
1398 | static struct vm_operations_struct spufs_mss_mmap_vmops = { | |
b1e2270f | 1399 | .fault = spufs_mss_mmap_fault, |
d9379c4b | 1400 | }; |
1401 | ||
1402 | /* | |
1403 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b | 1404 | */ |
1405 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1406 | { | |
1407 | if (!(vma->vm_flags & VM_SHARED)) | |
1408 | return -EINVAL; | |
1409 | ||
78bde53e | 1410 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1411 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b | 1412 | |
1413 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1414 | return 0; | |
1415 | } | |
27d5bf2a BH |
1416 | #else /* SPUFS_MMAP_4K */ |
1417 | #define spufs_mss_mmap NULL | |
1418 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b | 1419 | |
1420 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1421 | { | |
1422 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1423 | struct spu_context *ctx = i->i_ctx; |
d9379c4b | 1424 | |
1425 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1426 | |
47d3a5fa | 1427 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1428 | if (!i->i_openers++) |
1429 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1430 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b | 1431 | return nonseekable_open(inode, file); |
1432 | } | |
1433 | ||
43c2bbd9 CH |
1434 | static int |
1435 | spufs_mss_release(struct inode *inode, struct file *file) | |
1436 | { | |
1437 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1438 | struct spu_context *ctx = i->i_ctx; | |
1439 | ||
47d3a5fa | 1440 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1441 | if (!--i->i_openers) |
1442 | ctx->mss = NULL; | |
47d3a5fa | 1443 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1444 | return 0; |
1445 | } | |
1446 | ||
5dfe4c96 | 1447 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1448 | .open = spufs_mss_open, |
43c2bbd9 | 1449 | .release = spufs_mss_release, |
d9379c4b | 1450 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1451 | }; |
1452 | ||
b1e2270f NP |
1453 | static int |
1454 | spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
27d5bf2a | 1455 | { |
87ff6090 | 1456 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1457 | } |
1458 | ||
1459 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { | |
b1e2270f | 1460 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1461 | }; |
1462 | ||
1463 | /* | |
1464 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1465 | */ | |
1466 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1467 | { | |
1468 | if (!(vma->vm_flags & VM_SHARED)) | |
1469 | return -EINVAL; | |
1470 | ||
78bde53e | 1471 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1472 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1473 | |
1474 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1479 | { | |
1480 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1481 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1482 | |
47d3a5fa | 1483 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1484 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1485 | if (!i->i_openers++) |
1486 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1487 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1488 | return nonseekable_open(inode, file); |
1489 | } | |
1490 | ||
43c2bbd9 CH |
1491 | static int |
1492 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1493 | { | |
1494 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1495 | struct spu_context *ctx = i->i_ctx; | |
1496 | ||
47d3a5fa | 1497 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1498 | if (!--i->i_openers) |
1499 | ctx->psmap = NULL; | |
47d3a5fa | 1500 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1501 | return 0; |
1502 | } | |
1503 | ||
5dfe4c96 | 1504 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1505 | .open = spufs_psmap_open, |
43c2bbd9 | 1506 | .release = spufs_psmap_release, |
27d5bf2a | 1507 | .mmap = spufs_psmap_mmap, |
d9379c4b | 1508 | }; |
1509 | ||
1510 | ||
27d5bf2a | 1511 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1512 | static int |
1513 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1514 | { |
87ff6090 | 1515 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1516 | } |
1517 | ||
1518 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { | |
b1e2270f | 1519 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1520 | }; |
1521 | ||
1522 | /* | |
1523 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1524 | */ |
1525 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1526 | { | |
1527 | if (!(vma->vm_flags & VM_SHARED)) | |
1528 | return -EINVAL; | |
1529 | ||
78bde53e | 1530 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1531 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1532 | |
1533 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1534 | return 0; | |
1535 | } | |
27d5bf2a BH |
1536 | #else /* SPUFS_MMAP_4K */ |
1537 | #define spufs_mfc_mmap NULL | |
1538 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1539 | |
1540 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1541 | { | |
1542 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1543 | struct spu_context *ctx = i->i_ctx; | |
1544 | ||
1545 | /* we don't want to deal with DMA into other processes */ | |
1546 | if (ctx->owner != current->mm) | |
1547 | return -EINVAL; | |
1548 | ||
1549 | if (atomic_read(&inode->i_count) != 1) | |
1550 | return -EBUSY; | |
1551 | ||
47d3a5fa | 1552 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1553 | file->private_data = ctx; |
43c2bbd9 CH |
1554 | if (!i->i_openers++) |
1555 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1556 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1557 | return nonseekable_open(inode, file); |
1558 | } | |
1559 | ||
43c2bbd9 CH |
1560 | static int |
1561 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1562 | { | |
1563 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1564 | struct spu_context *ctx = i->i_ctx; | |
1565 | ||
47d3a5fa | 1566 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1567 | if (!--i->i_openers) |
1568 | ctx->mfc = NULL; | |
47d3a5fa | 1569 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1570 | return 0; |
1571 | } | |
1572 | ||
a33a7d73 AB |
1573 | /* interrupt-level mfc callback function. */ |
1574 | void spufs_mfc_callback(struct spu *spu) | |
1575 | { | |
1576 | struct spu_context *ctx = spu->ctx; | |
1577 | ||
e65c2f6f LB |
1578 | if (!ctx) |
1579 | return; | |
1580 | ||
a33a7d73 AB |
1581 | wake_up_all(&ctx->mfc_wq); |
1582 | ||
e48b1b45 | 1583 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1584 | if (ctx->mfc_fasync) { |
1585 | u32 free_elements, tagstatus; | |
1586 | unsigned int mask; | |
1587 | ||
1588 | /* no need for spu_acquire in interrupt context */ | |
1589 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1590 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1591 | ||
1592 | mask = 0; | |
1593 | if (free_elements & 0xffff) | |
1594 | mask |= POLLOUT; | |
1595 | if (tagstatus & ctx->tagwait) | |
1596 | mask |= POLLIN; | |
1597 | ||
1598 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1599 | } | |
1600 | } | |
1601 | ||
1602 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1603 | { | |
1604 | /* See if there is one tag group is complete */ | |
1605 | /* FIXME we need locking around tagwait */ | |
1606 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1607 | ctx->tagwait &= ~*status; | |
1608 | if (*status) | |
1609 | return 1; | |
1610 | ||
1611 | /* enable interrupt waiting for any tag group, | |
1612 | may silently fail if interrupts are already enabled */ | |
1613 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1618 | size_t size, loff_t *pos) | |
1619 | { | |
1620 | struct spu_context *ctx = file->private_data; | |
1621 | int ret = -EINVAL; | |
1622 | u32 status; | |
1623 | ||
1624 | if (size != 4) | |
1625 | goto out; | |
1626 | ||
c9101bdb CH |
1627 | ret = spu_acquire(ctx); |
1628 | if (ret) | |
1629 | return ret; | |
1630 | ||
1631 | ret = -EINVAL; | |
a33a7d73 AB |
1632 | if (file->f_flags & O_NONBLOCK) { |
1633 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1634 | if (!(status & ctx->tagwait)) | |
1635 | ret = -EAGAIN; | |
1636 | else | |
c9101bdb | 1637 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1638 | ctx->tagwait &= ~status; |
1639 | } else { | |
1640 | ret = spufs_wait(ctx->mfc_wq, | |
1641 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1642 | if (ret) |
1643 | goto out; | |
a33a7d73 AB |
1644 | } |
1645 | spu_release(ctx); | |
1646 | ||
a33a7d73 AB |
1647 | ret = 4; |
1648 | if (copy_to_user(buffer, &status, 4)) | |
1649 | ret = -EFAULT; | |
1650 | ||
1651 | out: | |
1652 | return ret; | |
1653 | } | |
1654 | ||
1655 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1656 | { | |
1657 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, | |
1658 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); | |
1659 | ||
1660 | switch (cmd->cmd) { | |
1661 | case MFC_PUT_CMD: | |
1662 | case MFC_PUTF_CMD: | |
1663 | case MFC_PUTB_CMD: | |
1664 | case MFC_GET_CMD: | |
1665 | case MFC_GETF_CMD: | |
1666 | case MFC_GETB_CMD: | |
1667 | break; | |
1668 | default: | |
1669 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1670 | return -EIO; | |
1671 | } | |
1672 | ||
1673 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
1674 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", | |
1675 | cmd->ea, cmd->lsa); | |
1676 | return -EIO; | |
1677 | } | |
1678 | ||
1679 | switch (cmd->size & 0xf) { | |
1680 | case 1: | |
1681 | break; | |
1682 | case 2: | |
1683 | if (cmd->lsa & 1) | |
1684 | goto error; | |
1685 | break; | |
1686 | case 4: | |
1687 | if (cmd->lsa & 3) | |
1688 | goto error; | |
1689 | break; | |
1690 | case 8: | |
1691 | if (cmd->lsa & 7) | |
1692 | goto error; | |
1693 | break; | |
1694 | case 0: | |
1695 | if (cmd->lsa & 15) | |
1696 | goto error; | |
1697 | break; | |
1698 | error: | |
1699 | default: | |
1700 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1701 | cmd->lsa & 0xf, cmd->size); | |
1702 | return -EIO; | |
1703 | } | |
1704 | ||
1705 | if (cmd->size > 16 * 1024) { | |
1706 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1707 | return -EIO; | |
1708 | } | |
1709 | ||
1710 | if (cmd->tag & 0xfff0) { | |
1711 | /* we reserve the higher tag numbers for kernel use */ | |
1712 | pr_debug("invalid DMA tag\n"); | |
1713 | return -EIO; | |
1714 | } | |
1715 | ||
1716 | if (cmd->class) { | |
1717 | /* not supported in this version */ | |
1718 | pr_debug("invalid DMA class\n"); | |
1719 | return -EIO; | |
1720 | } | |
1721 | ||
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1726 | struct mfc_dma_command cmd, | |
1727 | int *error) | |
1728 | { | |
1729 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1730 | if (*error == -EAGAIN) { | |
1731 | /* wait for any tag group to complete | |
1732 | so we have space for the new command */ | |
1733 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1734 | /* try again, because the queue might be | |
1735 | empty again */ | |
1736 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1737 | if (*error == -EAGAIN) | |
1738 | return 0; | |
1739 | } | |
1740 | return 1; | |
1741 | } | |
1742 | ||
1743 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1744 | size_t size, loff_t *pos) | |
1745 | { | |
1746 | struct spu_context *ctx = file->private_data; | |
1747 | struct mfc_dma_command cmd; | |
1748 | int ret = -EINVAL; | |
1749 | ||
1750 | if (size != sizeof cmd) | |
1751 | goto out; | |
1752 | ||
1753 | ret = -EFAULT; | |
1754 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1755 | goto out; | |
1756 | ||
1757 | ret = spufs_check_valid_dma(&cmd); | |
1758 | if (ret) | |
1759 | goto out; | |
1760 | ||
c9101bdb CH |
1761 | ret = spu_acquire(ctx); |
1762 | if (ret) | |
1763 | goto out; | |
1764 | ||
33bfd7a7 | 1765 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1766 | if (ret) |
1767 | goto out; | |
1768 | ||
a33a7d73 AB |
1769 | if (file->f_flags & O_NONBLOCK) { |
1770 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1771 | } else { | |
1772 | int status; | |
1773 | ret = spufs_wait(ctx->mfc_wq, | |
1774 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1775 | if (ret) |
1776 | goto out; | |
a33a7d73 AB |
1777 | if (status) |
1778 | ret = status; | |
1779 | } | |
a33a7d73 AB |
1780 | |
1781 | if (ret) | |
933b0e35 | 1782 | goto out_unlock; |
a33a7d73 AB |
1783 | |
1784 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1785 | ret = size; |
a33a7d73 | 1786 | |
933b0e35 KA |
1787 | out_unlock: |
1788 | spu_release(ctx); | |
a33a7d73 AB |
1789 | out: |
1790 | return ret; | |
1791 | } | |
1792 | ||
1793 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1794 | { | |
1795 | struct spu_context *ctx = file->private_data; | |
1796 | u32 free_elements, tagstatus; | |
1797 | unsigned int mask; | |
1798 | ||
933b0e35 KA |
1799 | poll_wait(file, &ctx->mfc_wq, wait); |
1800 | ||
c9101bdb CH |
1801 | /* |
1802 | * For now keep this uninterruptible and also ignore the rule | |
1803 | * that poll should not sleep. Will be fixed later. | |
1804 | */ | |
1805 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1806 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1807 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1808 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1809 | spu_release(ctx); | |
1810 | ||
a33a7d73 AB |
1811 | mask = 0; |
1812 | if (free_elements & 0xffff) | |
1813 | mask |= POLLOUT | POLLWRNORM; | |
1814 | if (tagstatus & ctx->tagwait) | |
1815 | mask |= POLLIN | POLLRDNORM; | |
1816 | ||
e48b1b45 | 1817 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1818 | free_elements, tagstatus, ctx->tagwait); |
1819 | ||
1820 | return mask; | |
1821 | } | |
1822 | ||
73b6af8a | 1823 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1824 | { |
1825 | struct spu_context *ctx = file->private_data; | |
1826 | int ret; | |
1827 | ||
c9101bdb CH |
1828 | ret = spu_acquire(ctx); |
1829 | if (ret) | |
eebead5b | 1830 | goto out; |
a33a7d73 AB |
1831 | #if 0 |
1832 | /* this currently hangs */ | |
1833 | ret = spufs_wait(ctx->mfc_wq, | |
1834 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1835 | if (ret) | |
1836 | goto out; | |
1837 | ret = spufs_wait(ctx->mfc_wq, | |
1838 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1839 | if (ret) |
1840 | goto out; | |
a33a7d73 AB |
1841 | #else |
1842 | ret = 0; | |
1843 | #endif | |
1844 | spu_release(ctx); | |
eebead5b | 1845 | out: |
a33a7d73 AB |
1846 | return ret; |
1847 | } | |
1848 | ||
1849 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, | |
1850 | int datasync) | |
1851 | { | |
73b6af8a | 1852 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1853 | } |
1854 | ||
1855 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1856 | { | |
1857 | struct spu_context *ctx = file->private_data; | |
1858 | ||
1859 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1860 | } | |
1861 | ||
5dfe4c96 | 1862 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1863 | .open = spufs_mfc_open, |
43c2bbd9 | 1864 | .release = spufs_mfc_release, |
a33a7d73 AB |
1865 | .read = spufs_mfc_read, |
1866 | .write = spufs_mfc_write, | |
1867 | .poll = spufs_mfc_poll, | |
1868 | .flush = spufs_mfc_flush, | |
1869 | .fsync = spufs_mfc_fsync, | |
1870 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1871 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1872 | }; |
1873 | ||
197b1a82 | 1874 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1875 | { |
1876 | struct spu_context *ctx = data; | |
c9101bdb CH |
1877 | int ret; |
1878 | ||
1879 | ret = spu_acquire(ctx); | |
1880 | if (ret) | |
1881 | return ret; | |
8b3d6663 AB |
1882 | ctx->ops->npc_write(ctx, val); |
1883 | spu_release(ctx); | |
197b1a82 CH |
1884 | |
1885 | return 0; | |
67207b96 AB |
1886 | } |
1887 | ||
104f0cc2 | 1888 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1889 | { |
1890 | return ctx->ops->npc_read(ctx); | |
1891 | } | |
104f0cc2 ME |
1892 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1893 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1894 | |
197b1a82 | 1895 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1896 | { |
1897 | struct spu_context *ctx = data; | |
1898 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1899 | int ret; |
1900 | ||
1901 | ret = spu_acquire_saved(ctx); | |
1902 | if (ret) | |
1903 | return ret; | |
8b3d6663 | 1904 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1905 | spu_release_saved(ctx); |
197b1a82 CH |
1906 | |
1907 | return 0; | |
8b3d6663 AB |
1908 | } |
1909 | ||
104f0cc2 | 1910 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1911 | { |
8b3d6663 | 1912 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1913 | return lscsa->decr.slot[0]; |
1914 | } | |
104f0cc2 ME |
1915 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1916 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1917 | |
197b1a82 | 1918 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1919 | { |
1920 | struct spu_context *ctx = data; | |
c9101bdb CH |
1921 | int ret; |
1922 | ||
1923 | ret = spu_acquire_saved(ctx); | |
1924 | if (ret) | |
1925 | return ret; | |
d40a01d4 MN |
1926 | if (val) |
1927 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1928 | else | |
1929 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1930 | spu_release_saved(ctx); |
197b1a82 CH |
1931 | |
1932 | return 0; | |
8b3d6663 AB |
1933 | } |
1934 | ||
104f0cc2 | 1935 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1936 | { |
d40a01d4 MN |
1937 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1938 | return SPU_DECR_STATUS_RUNNING; | |
1939 | else | |
1940 | return 0; | |
bf1ab978 | 1941 | } |
104f0cc2 ME |
1942 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1943 | spufs_decr_status_set, "0x%llx\n", | |
1944 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1945 | |
197b1a82 | 1946 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1947 | { |
1948 | struct spu_context *ctx = data; | |
1949 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1950 | int ret; |
1951 | ||
1952 | ret = spu_acquire_saved(ctx); | |
1953 | if (ret) | |
1954 | return ret; | |
8b3d6663 | 1955 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1956 | spu_release_saved(ctx); |
197b1a82 CH |
1957 | |
1958 | return 0; | |
8b3d6663 AB |
1959 | } |
1960 | ||
104f0cc2 | 1961 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1962 | { |
8b3d6663 | 1963 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1964 | return lscsa->event_mask.slot[0]; |
1965 | } | |
1966 | ||
104f0cc2 ME |
1967 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1968 | spufs_event_mask_set, "0x%llx\n", | |
1969 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1970 | |
104f0cc2 | 1971 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1972 | { |
b9e3bd77 | 1973 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1974 | u64 stat; |
b9e3bd77 DGM |
1975 | stat = state->spu_chnlcnt_RW[0]; |
1976 | if (stat) | |
bf1ab978 DGM |
1977 | return state->spu_chnldata_RW[0]; |
1978 | return 0; | |
1979 | } | |
104f0cc2 ME |
1980 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1981 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1982 | |
197b1a82 | 1983 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1984 | { |
1985 | struct spu_context *ctx = data; | |
1986 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1987 | int ret; |
1988 | ||
1989 | ret = spu_acquire_saved(ctx); | |
1990 | if (ret) | |
1991 | return ret; | |
8b3d6663 | 1992 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1993 | spu_release_saved(ctx); |
197b1a82 CH |
1994 | |
1995 | return 0; | |
8b3d6663 AB |
1996 | } |
1997 | ||
104f0cc2 | 1998 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1999 | { |
8b3d6663 | 2000 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 2001 | return lscsa->srr0.slot[0]; |
8b3d6663 | 2002 | } |
104f0cc2 ME |
2003 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
2004 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 2005 | |
104f0cc2 | 2006 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 2007 | { |
7b1a7014 | 2008 | u64 num; |
2009 | ||
7b1a7014 | 2010 | if (ctx->state == SPU_STATE_RUNNABLE) |
2011 | num = ctx->spu->number; | |
2012 | else | |
2013 | num = (unsigned int)-1; | |
7b1a7014 | 2014 | |
2015 | return num; | |
2016 | } | |
104f0cc2 ME |
2017 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
2018 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 2019 | |
104f0cc2 | 2020 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
2021 | { |
2022 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 2023 | return ctx->object_id; |
bf1ab978 DGM |
2024 | } |
2025 | ||
197b1a82 | 2026 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
2027 | { |
2028 | struct spu_context *ctx = data; | |
2029 | ctx->object_id = id; | |
197b1a82 CH |
2030 | |
2031 | return 0; | |
86767277 AB |
2032 | } |
2033 | ||
104f0cc2 ME |
2034 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
2035 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 2036 | |
104f0cc2 | 2037 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 2038 | { |
bf1ab978 DGM |
2039 | return ctx->csa.priv2.spu_lslr_RW; |
2040 | } | |
104f0cc2 ME |
2041 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
2042 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
2043 | |
2044 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2045 | { | |
2046 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2047 | struct spu_context *ctx = i->i_ctx; | |
2048 | file->private_data = ctx; | |
2049 | return 0; | |
2050 | } | |
2051 | ||
cbe709c1 BH |
2052 | static int spufs_caps_show(struct seq_file *s, void *private) |
2053 | { | |
2054 | struct spu_context *ctx = s->private; | |
2055 | ||
2056 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2057 | seq_puts(s, "sched\n"); | |
2058 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2059 | seq_puts(s, "step\n"); | |
2060 | return 0; | |
2061 | } | |
2062 | ||
2063 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2064 | { | |
2065 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2066 | } | |
2067 | ||
2068 | static const struct file_operations spufs_caps_fops = { | |
2069 | .open = spufs_caps_open, | |
2070 | .read = seq_read, | |
2071 | .llseek = seq_lseek, | |
2072 | .release = single_release, | |
2073 | }; | |
2074 | ||
bf1ab978 DGM |
2075 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2076 | char __user *buf, size_t len, loff_t *pos) | |
2077 | { | |
bf1ab978 DGM |
2078 | u32 data; |
2079 | ||
cbea9238 JK |
2080 | /* EOF if there's no entry in the mbox */ |
2081 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2082 | return 0; | |
2083 | ||
2084 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2085 | |
2086 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2087 | } | |
2088 | ||
69a2f00c DGM |
2089 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2090 | size_t len, loff_t *pos) | |
2091 | { | |
bf1ab978 | 2092 | int ret; |
69a2f00c | 2093 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2094 | |
2095 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2096 | return -EFAULT; | |
2097 | ||
c9101bdb CH |
2098 | ret = spu_acquire_saved(ctx); |
2099 | if (ret) | |
2100 | return ret; | |
69a2f00c | 2101 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2102 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2103 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2104 | spu_release_saved(ctx); |
69a2f00c | 2105 | |
bf1ab978 | 2106 | return ret; |
69a2f00c DGM |
2107 | } |
2108 | ||
5dfe4c96 | 2109 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2110 | .open = spufs_info_open, |
2111 | .read = spufs_mbox_info_read, | |
2112 | .llseek = generic_file_llseek, | |
2113 | }; | |
2114 | ||
bf1ab978 DGM |
2115 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2116 | char __user *buf, size_t len, loff_t *pos) | |
2117 | { | |
bf1ab978 DGM |
2118 | u32 data; |
2119 | ||
cbea9238 JK |
2120 | /* EOF if there's no entry in the ibox */ |
2121 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2122 | return 0; | |
2123 | ||
2124 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2125 | |
2126 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2127 | } | |
2128 | ||
69a2f00c DGM |
2129 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2130 | size_t len, loff_t *pos) | |
2131 | { | |
2132 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2133 | int ret; |
69a2f00c DGM |
2134 | |
2135 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2136 | return -EFAULT; | |
2137 | ||
c9101bdb CH |
2138 | ret = spu_acquire_saved(ctx); |
2139 | if (ret) | |
2140 | return ret; | |
69a2f00c | 2141 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2142 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2143 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2144 | spu_release_saved(ctx); |
69a2f00c | 2145 | |
bf1ab978 | 2146 | return ret; |
69a2f00c DGM |
2147 | } |
2148 | ||
5dfe4c96 | 2149 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2150 | .open = spufs_info_open, |
2151 | .read = spufs_ibox_info_read, | |
2152 | .llseek = generic_file_llseek, | |
2153 | }; | |
2154 | ||
bf1ab978 DGM |
2155 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2156 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2157 | { |
69a2f00c DGM |
2158 | int i, cnt; |
2159 | u32 data[4]; | |
2160 | u32 wbox_stat; | |
2161 | ||
bf1ab978 DGM |
2162 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2163 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2164 | for (i = 0; i < cnt; i++) { | |
2165 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2166 | } | |
2167 | ||
2168 | return simple_read_from_buffer(buf, len, pos, &data, | |
2169 | cnt * sizeof(u32)); | |
2170 | } | |
2171 | ||
2172 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2173 | size_t len, loff_t *pos) | |
2174 | { | |
2175 | struct spu_context *ctx = file->private_data; | |
2176 | int ret; | |
2177 | ||
69a2f00c DGM |
2178 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2179 | return -EFAULT; | |
2180 | ||
c9101bdb CH |
2181 | ret = spu_acquire_saved(ctx); |
2182 | if (ret) | |
2183 | return ret; | |
69a2f00c | 2184 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2185 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2186 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2187 | spu_release_saved(ctx); |
69a2f00c | 2188 | |
bf1ab978 | 2189 | return ret; |
69a2f00c DGM |
2190 | } |
2191 | ||
5dfe4c96 | 2192 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2193 | .open = spufs_info_open, |
2194 | .read = spufs_wbox_info_read, | |
2195 | .llseek = generic_file_llseek, | |
2196 | }; | |
2197 | ||
bf1ab978 DGM |
2198 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2199 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2200 | { |
b9e3bd77 DGM |
2201 | struct spu_dma_info info; |
2202 | struct mfc_cq_sr *qp, *spuqp; | |
2203 | int i; | |
2204 | ||
b9e3bd77 DGM |
2205 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2206 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2207 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2208 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2209 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2210 | for (i = 0; i < 16; i++) { | |
2211 | qp = &info.dma_info_command_data[i]; | |
2212 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2213 | ||
2214 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2215 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2216 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2217 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2218 | } | |
b9e3bd77 DGM |
2219 | |
2220 | return simple_read_from_buffer(buf, len, pos, &info, | |
2221 | sizeof info); | |
2222 | } | |
2223 | ||
bf1ab978 DGM |
2224 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2225 | size_t len, loff_t *pos) | |
2226 | { | |
2227 | struct spu_context *ctx = file->private_data; | |
2228 | int ret; | |
2229 | ||
2230 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2231 | return -EFAULT; | |
2232 | ||
c9101bdb CH |
2233 | ret = spu_acquire_saved(ctx); |
2234 | if (ret) | |
2235 | return ret; | |
bf1ab978 DGM |
2236 | spin_lock(&ctx->csa.register_lock); |
2237 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2238 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2239 | spu_release_saved(ctx); |
bf1ab978 DGM |
2240 | |
2241 | return ret; | |
2242 | } | |
2243 | ||
5dfe4c96 | 2244 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2245 | .open = spufs_info_open, |
2246 | .read = spufs_dma_info_read, | |
2247 | }; | |
2248 | ||
bf1ab978 DGM |
2249 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2250 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2251 | { |
b9e3bd77 | 2252 | struct spu_proxydma_info info; |
b9e3bd77 | 2253 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2254 | int ret = sizeof info; |
b9e3bd77 DGM |
2255 | int i; |
2256 | ||
2257 | if (len < ret) | |
2258 | return -EINVAL; | |
2259 | ||
2260 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2261 | return -EFAULT; | |
2262 | ||
b9e3bd77 DGM |
2263 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2264 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2265 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2266 | for (i = 0; i < 8; i++) { | |
2267 | qp = &info.proxydma_info_command_data[i]; | |
2268 | puqp = &ctx->csa.priv2.puq[i]; | |
2269 | ||
2270 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2271 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2272 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2273 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2274 | } | |
bf1ab978 DGM |
2275 | |
2276 | return simple_read_from_buffer(buf, len, pos, &info, | |
2277 | sizeof info); | |
2278 | } | |
2279 | ||
2280 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2281 | size_t len, loff_t *pos) | |
2282 | { | |
2283 | struct spu_context *ctx = file->private_data; | |
2284 | int ret; | |
2285 | ||
c9101bdb CH |
2286 | ret = spu_acquire_saved(ctx); |
2287 | if (ret) | |
2288 | return ret; | |
bf1ab978 DGM |
2289 | spin_lock(&ctx->csa.register_lock); |
2290 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2291 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2292 | spu_release_saved(ctx); |
b9e3bd77 | 2293 | |
b9e3bd77 DGM |
2294 | return ret; |
2295 | } | |
2296 | ||
5dfe4c96 | 2297 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2298 | .open = spufs_info_open, |
2299 | .read = spufs_proxydma_info_read, | |
2300 | }; | |
2301 | ||
476273ad CH |
2302 | static int spufs_show_tid(struct seq_file *s, void *private) |
2303 | { | |
2304 | struct spu_context *ctx = s->private; | |
2305 | ||
2306 | seq_printf(s, "%d\n", ctx->tid); | |
2307 | return 0; | |
2308 | } | |
2309 | ||
2310 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2311 | { | |
2312 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2313 | } | |
2314 | ||
2315 | static const struct file_operations spufs_tid_fops = { | |
2316 | .open = spufs_tid_open, | |
2317 | .read = seq_read, | |
2318 | .llseek = seq_lseek, | |
2319 | .release = single_release, | |
2320 | }; | |
2321 | ||
e9f8a0b6 CH |
2322 | static const char *ctx_state_names[] = { |
2323 | "user", "system", "iowait", "loaded" | |
2324 | }; | |
2325 | ||
2326 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2327 | enum spu_utilization_state state) |
e9f8a0b6 | 2328 | { |
27ec41d3 AD |
2329 | struct timespec ts; |
2330 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2331 | |
27ec41d3 AD |
2332 | /* |
2333 | * In general, utilization statistics are updated by the controlling | |
2334 | * thread as the spu context moves through various well defined | |
2335 | * state transitions, but if the context is lazily loaded its | |
2336 | * utilization statistics are not updated as the controlling thread | |
2337 | * is not tightly coupled with the execution of the spu context. We | |
2338 | * calculate and apply the time delta from the last recorded state | |
2339 | * of the spu context. | |
2340 | */ | |
2341 | if (ctx->spu && ctx->stats.util_state == state) { | |
2342 | ktime_get_ts(&ts); | |
2343 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2344 | } | |
e9f8a0b6 | 2345 | |
27ec41d3 | 2346 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2347 | } |
2348 | ||
2349 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2350 | { | |
2351 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2352 | ||
2353 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2354 | slb_flts += (ctx->spu->stats.slb_flt - | |
2355 | ctx->stats.slb_flt_base); | |
2356 | } | |
2357 | ||
2358 | return slb_flts; | |
2359 | } | |
2360 | ||
2361 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2362 | { | |
2363 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2364 | ||
2365 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2366 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2367 | ctx->stats.class2_intr_base); | |
2368 | } | |
2369 | ||
2370 | return class2_intrs; | |
2371 | } | |
2372 | ||
2373 | ||
2374 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2375 | { | |
2376 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2377 | int ret; |
2378 | ||
2379 | ret = spu_acquire(ctx); | |
2380 | if (ret) | |
2381 | return ret; | |
e9f8a0b6 | 2382 | |
e9f8a0b6 CH |
2383 | seq_printf(s, "%s %llu %llu %llu %llu " |
2384 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2385 | ctx_state_names[ctx->stats.util_state], |
2386 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2387 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2388 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2389 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2390 | ctx->stats.vol_ctx_switch, |
2391 | ctx->stats.invol_ctx_switch, | |
2392 | spufs_slb_flts(ctx), | |
2393 | ctx->stats.hash_flt, | |
2394 | ctx->stats.min_flt, | |
2395 | ctx->stats.maj_flt, | |
2396 | spufs_class2_intrs(ctx), | |
2397 | ctx->stats.libassist); | |
2398 | spu_release(ctx); | |
2399 | return 0; | |
2400 | } | |
2401 | ||
2402 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2403 | { | |
2404 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2405 | } | |
2406 | ||
2407 | static const struct file_operations spufs_stat_fops = { | |
2408 | .open = spufs_stat_open, | |
2409 | .read = seq_read, | |
2410 | .llseek = seq_lseek, | |
2411 | .release = single_release, | |
2412 | }; | |
2413 | ||
5158e9b5 CH |
2414 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2415 | { | |
2416 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2417 | SWITCH_LOG_BUFSIZE; | |
2418 | } | |
2419 | ||
2420 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2421 | { | |
2422 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2423 | } | |
2424 | ||
2425 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2426 | { | |
2427 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2428 | int rc; |
2429 | ||
2430 | rc = spu_acquire(ctx); | |
2431 | if (rc) | |
2432 | return rc; | |
5158e9b5 | 2433 | |
5158e9b5 | 2434 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2435 | rc = -EBUSY; |
2436 | goto out; | |
5158e9b5 | 2437 | } |
f5ed0eb6 | 2438 | |
837ef884 | 2439 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2440 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2441 | GFP_KERNEL); | |
2442 | ||
2443 | if (!ctx->switch_log) { | |
2444 | rc = -ENOMEM; | |
2445 | goto out; | |
2446 | } | |
2447 | ||
837ef884 | 2448 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2449 | init_waitqueue_head(&ctx->switch_log->wait); |
2450 | rc = 0; | |
2451 | ||
2452 | out: | |
2453 | spu_release(ctx); | |
2454 | return rc; | |
2455 | } | |
2456 | ||
2457 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2458 | { | |
2459 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2460 | int rc; | |
2461 | ||
2462 | rc = spu_acquire(ctx); | |
2463 | if (rc) | |
2464 | return rc; | |
2465 | ||
2466 | kfree(ctx->switch_log); | |
2467 | ctx->switch_log = NULL; | |
2468 | spu_release(ctx); | |
5158e9b5 CH |
2469 | |
2470 | return 0; | |
5158e9b5 CH |
2471 | } |
2472 | ||
2473 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2474 | { | |
2475 | struct switch_log_entry *p; | |
2476 | ||
2477 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2478 | ||
2479 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2480 | (unsigned int) p->tstamp.tv_sec, | |
2481 | (unsigned int) p->tstamp.tv_nsec, | |
2482 | p->spu_id, | |
2483 | (unsigned int) p->type, | |
2484 | (unsigned int) p->val, | |
2485 | (unsigned long long) p->timebase); | |
2486 | } | |
2487 | ||
2488 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2489 | size_t len, loff_t *ppos) | |
2490 | { | |
2491 | struct inode *inode = file->f_path.dentry->d_inode; | |
2492 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2493 | int error = 0, cnt = 0; | |
2494 | ||
2495 | if (!buf || len < 0) | |
2496 | return -EINVAL; | |
2497 | ||
f5ed0eb6 JK |
2498 | error = spu_acquire(ctx); |
2499 | if (error) | |
2500 | return error; | |
2501 | ||
5158e9b5 CH |
2502 | while (cnt < len) { |
2503 | char tbuf[128]; | |
2504 | int width; | |
2505 | ||
14f693ee JK |
2506 | if (spufs_switch_log_used(ctx) == 0) { |
2507 | if (cnt > 0) { | |
2508 | /* If there's data ready to go, we can | |
2509 | * just return straight away */ | |
2510 | break; | |
2511 | ||
2512 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2513 | error = -EAGAIN; |
2514 | break; | |
14f693ee JK |
2515 | |
2516 | } else { | |
2517 | /* spufs_wait will drop the mutex and | |
2518 | * re-acquire, but since we're in read(), the | |
2519 | * file cannot be _released (and so | |
2520 | * ctx->switch_log is stable). | |
2521 | */ | |
2522 | error = spufs_wait(ctx->switch_log->wait, | |
2523 | spufs_switch_log_used(ctx) > 0); | |
2524 | ||
2525 | /* On error, spufs_wait returns without the | |
2526 | * state mutex held */ | |
2527 | if (error) | |
2528 | return error; | |
2529 | ||
2530 | /* We may have had entries read from underneath | |
2531 | * us while we dropped the mutex in spufs_wait, | |
2532 | * so re-check */ | |
2533 | if (spufs_switch_log_used(ctx) == 0) | |
2534 | continue; | |
f5ed0eb6 | 2535 | } |
5158e9b5 CH |
2536 | } |
2537 | ||
5158e9b5 | 2538 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2539 | if (width < len) |
5158e9b5 CH |
2540 | ctx->switch_log->tail = |
2541 | (ctx->switch_log->tail + 1) % | |
2542 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2543 | else |
2544 | /* If the record is greater than space available return | |
2545 | * partial buffer (so far) */ | |
5158e9b5 CH |
2546 | break; |
2547 | ||
2548 | error = copy_to_user(buf + cnt, tbuf, width); | |
2549 | if (error) | |
2550 | break; | |
2551 | cnt += width; | |
2552 | } | |
2553 | ||
f5ed0eb6 JK |
2554 | spu_release(ctx); |
2555 | ||
5158e9b5 CH |
2556 | return cnt == 0 ? error : cnt; |
2557 | } | |
2558 | ||
2559 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2560 | { | |
2561 | struct inode *inode = file->f_path.dentry->d_inode; | |
2562 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2563 | unsigned int mask = 0; | |
f5ed0eb6 | 2564 | int rc; |
5158e9b5 CH |
2565 | |
2566 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2567 | ||
f5ed0eb6 JK |
2568 | rc = spu_acquire(ctx); |
2569 | if (rc) | |
2570 | return rc; | |
2571 | ||
5158e9b5 CH |
2572 | if (spufs_switch_log_used(ctx) > 0) |
2573 | mask |= POLLIN; | |
2574 | ||
f5ed0eb6 JK |
2575 | spu_release(ctx); |
2576 | ||
5158e9b5 CH |
2577 | return mask; |
2578 | } | |
2579 | ||
2580 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2581 | .owner = THIS_MODULE, |
2582 | .open = spufs_switch_log_open, | |
2583 | .read = spufs_switch_log_read, | |
2584 | .poll = spufs_switch_log_poll, | |
2585 | .release = spufs_switch_log_release, | |
5158e9b5 CH |
2586 | }; |
2587 | ||
f5ed0eb6 JK |
2588 | /** |
2589 | * Log a context switch event to a switch log reader. | |
2590 | * | |
2591 | * Must be called with ctx->state_mutex held. | |
2592 | */ | |
5158e9b5 CH |
2593 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2594 | u32 type, u32 val) | |
2595 | { | |
2596 | if (!ctx->switch_log) | |
2597 | return; | |
2598 | ||
5158e9b5 CH |
2599 | if (spufs_switch_log_avail(ctx) > 1) { |
2600 | struct switch_log_entry *p; | |
2601 | ||
2602 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2603 | ktime_get_ts(&p->tstamp); | |
2604 | p->timebase = get_tb(); | |
2605 | p->spu_id = spu ? spu->number : -1; | |
2606 | p->type = type; | |
2607 | p->val = val; | |
2608 | ||
2609 | ctx->switch_log->head = | |
2610 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2611 | } | |
5158e9b5 CH |
2612 | |
2613 | wake_up(&ctx->switch_log->wait); | |
2614 | } | |
e9f8a0b6 | 2615 | |
46deed69 LB |
2616 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2617 | { | |
2618 | struct spu_context *ctx = s->private; | |
2619 | u64 mfc_control_RW; | |
2620 | ||
2621 | mutex_lock(&ctx->state_mutex); | |
2622 | if (ctx->spu) { | |
2623 | struct spu *spu = ctx->spu; | |
2624 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2625 | ||
2626 | spin_lock_irq(&spu->register_lock); | |
2627 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2628 | spin_unlock_irq(&spu->register_lock); | |
2629 | } else { | |
2630 | struct spu_state *csa = &ctx->csa; | |
2631 | ||
2632 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2633 | } | |
2634 | ||
2635 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
2636 | " %c %lx %lx %lx %lx %x %x\n", | |
2637 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', | |
2638 | ctx->flags, | |
2639 | ctx->sched_flags, | |
2640 | ctx->prio, | |
2641 | ctx->time_slice, | |
2642 | ctx->spu ? ctx->spu->number : -1, | |
2643 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2644 | ctx->csa.class_0_pending, | |
2645 | ctx->csa.class_0_dar, | |
2646 | ctx->csa.class_1_dsisr, | |
2647 | mfc_control_RW, | |
2648 | ctx->ops->runcntl_read(ctx), | |
2649 | ctx->ops->status_read(ctx)); | |
2650 | ||
2651 | mutex_unlock(&ctx->state_mutex); | |
2652 | ||
2653 | return 0; | |
2654 | } | |
2655 | ||
2656 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2657 | { | |
2658 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2659 | } | |
2660 | ||
2661 | static const struct file_operations spufs_ctx_fops = { | |
2662 | .open = spufs_ctx_open, | |
2663 | .read = seq_read, | |
2664 | .llseek = seq_lseek, | |
2665 | .release = single_release, | |
2666 | }; | |
2667 | ||
23d893f5 | 2668 | struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2669 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2670 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2671 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2672 | { "mbox", &spufs_mbox_fops, 0444, }, |
2673 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2674 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2675 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2676 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2677 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2678 | { "signal1", &spufs_signal1_fops, 0666, }, |
2679 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2680 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2681 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2682 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2683 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2684 | { "lslr", &spufs_lslr_ops, 0444, }, |
2685 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2686 | { "mss", &spufs_mss_fops, 0666, }, | |
2687 | { "npc", &spufs_npc_ops, 0666, }, | |
2688 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2689 | { "decr", &spufs_decr_ops, 0666, }, |
2690 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2691 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2692 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2693 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2694 | { "phys-id", &spufs_id_ops, 0666, }, |
2695 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2696 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2697 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2698 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2699 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2700 | sizeof(struct spu_dma_info), }, | |
2701 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2702 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2703 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2704 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2705 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2706 | {}, |
2707 | }; | |
5737edd1 | 2708 | |
23d893f5 | 2709 | struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2710 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2711 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2712 | { "mbox", &spufs_mbox_fops, 0444, }, |
2713 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2714 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2715 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2716 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2717 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2718 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2719 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2720 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2721 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2722 | { "mss", &spufs_mss_fops, 0666, }, | |
2723 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2724 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2725 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2726 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2727 | { "phys-id", &spufs_id_ops, 0666, }, |
2728 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2729 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2730 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2731 | {}, |
2732 | }; | |
2733 | ||
2734 | struct spufs_tree_descr spufs_dir_debug_contents[] = { | |
46deed69 | 2735 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2736 | {}, |
2737 | }; | |
bf1ab978 DGM |
2738 | |
2739 | struct spufs_coredump_reader spufs_coredump_read[] = { | |
4fca9c42 ME |
2740 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2741 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2742 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2743 | { "decr", NULL, spufs_decr_get, 19 }, | |
2744 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2745 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2746 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2747 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2748 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2749 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2750 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2751 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2752 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2753 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2754 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2755 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2756 | { "proxydma_info", __spufs_proxydma_info_read, | |
2757 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2758 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2759 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2760 | { NULL }, |
bf1ab978 | 2761 | }; |