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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> |
5a0e3ad6 | 32 | #include <linux/slab.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" | |
ae142e0c | 41 | #include "sputrace.h" |
67207b96 | 42 | |
27d5bf2a BH |
43 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
44 | ||
197b1a82 CH |
45 | /* Simple attribute files */ |
46 | struct spufs_attr { | |
47 | int (*get)(void *, u64 *); | |
48 | int (*set)(void *, u64); | |
49 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
50 | char set_buf[24]; | |
51 | void *data; | |
52 | const char *fmt; /* format for read operation */ | |
53 | struct mutex mutex; /* protects access to these buffers */ | |
54 | }; | |
55 | ||
56 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
57 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
58 | const char *fmt) | |
59 | { | |
60 | struct spufs_attr *attr; | |
61 | ||
62 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
63 | if (!attr) | |
64 | return -ENOMEM; | |
65 | ||
66 | attr->get = get; | |
67 | attr->set = set; | |
68 | attr->data = inode->i_private; | |
69 | attr->fmt = fmt; | |
70 | mutex_init(&attr->mutex); | |
71 | file->private_data = attr; | |
72 | ||
73 | return nonseekable_open(inode, file); | |
74 | } | |
75 | ||
76 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
77 | { | |
78 | kfree(file->private_data); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
83 | size_t len, loff_t *ppos) | |
84 | { | |
85 | struct spufs_attr *attr; | |
86 | size_t size; | |
87 | ssize_t ret; | |
88 | ||
89 | attr = file->private_data; | |
90 | if (!attr->get) | |
91 | return -EACCES; | |
92 | ||
93 | ret = mutex_lock_interruptible(&attr->mutex); | |
94 | if (ret) | |
95 | return ret; | |
96 | ||
97 | if (*ppos) { /* continued read */ | |
98 | size = strlen(attr->get_buf); | |
99 | } else { /* first read */ | |
100 | u64 val; | |
101 | ret = attr->get(attr->data, &val); | |
102 | if (ret) | |
103 | goto out; | |
104 | ||
105 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
106 | attr->fmt, (unsigned long long)val); | |
107 | } | |
108 | ||
109 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
110 | out: | |
111 | mutex_unlock(&attr->mutex); | |
112 | return ret; | |
113 | } | |
114 | ||
115 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
116 | size_t len, loff_t *ppos) | |
117 | { | |
118 | struct spufs_attr *attr; | |
119 | u64 val; | |
120 | size_t size; | |
121 | ssize_t ret; | |
122 | ||
123 | attr = file->private_data; | |
124 | if (!attr->set) | |
125 | return -EACCES; | |
126 | ||
127 | ret = mutex_lock_interruptible(&attr->mutex); | |
128 | if (ret) | |
129 | return ret; | |
130 | ||
131 | ret = -EFAULT; | |
132 | size = min(sizeof(attr->set_buf) - 1, len); | |
133 | if (copy_from_user(attr->set_buf, buf, size)) | |
134 | goto out; | |
135 | ||
136 | ret = len; /* claim we got the whole input */ | |
137 | attr->set_buf[size] = '\0'; | |
138 | val = simple_strtol(attr->set_buf, NULL, 0); | |
139 | attr->set(attr->data, val); | |
140 | out: | |
141 | mutex_unlock(&attr->mutex); | |
142 | return ret; | |
143 | } | |
144 | ||
145 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
146 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
147 | { \ | |
148 | __simple_attr_check_format(__fmt, 0ull); \ | |
149 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
150 | } \ | |
828c0950 | 151 | static const struct file_operations __fops = { \ |
197b1a82 CH |
152 | .owner = THIS_MODULE, \ |
153 | .open = __fops ## _open, \ | |
154 | .release = spufs_attr_release, \ | |
155 | .read = spufs_attr_read, \ | |
156 | .write = spufs_attr_write, \ | |
157 | }; | |
158 | ||
cbe709c1 | 159 | |
67207b96 AB |
160 | static int |
161 | spufs_mem_open(struct inode *inode, struct file *file) | |
162 | { | |
163 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 164 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 165 | |
47d3a5fa | 166 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 167 | file->private_data = ctx; |
43c2bbd9 CH |
168 | if (!i->i_openers++) |
169 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 170 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
171 | return 0; |
172 | } | |
173 | ||
174 | static int | |
175 | spufs_mem_release(struct inode *inode, struct file *file) | |
176 | { | |
177 | struct spufs_inode_info *i = SPUFS_I(inode); | |
178 | struct spu_context *ctx = i->i_ctx; | |
179 | ||
47d3a5fa | 180 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
181 | if (!--i->i_openers) |
182 | ctx->local_store = NULL; | |
47d3a5fa | 183 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
184 | return 0; |
185 | } | |
186 | ||
bf1ab978 DGM |
187 | static ssize_t |
188 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
189 | size_t size, loff_t *pos) | |
190 | { | |
191 | char *local_store = ctx->ops->get_ls(ctx); | |
192 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
193 | LS_SIZE); | |
194 | } | |
195 | ||
67207b96 AB |
196 | static ssize_t |
197 | spufs_mem_read(struct file *file, char __user *buffer, | |
198 | size_t size, loff_t *pos) | |
199 | { | |
bf1ab978 | 200 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 201 | ssize_t ret; |
67207b96 | 202 | |
c9101bdb CH |
203 | ret = spu_acquire(ctx); |
204 | if (ret) | |
205 | return ret; | |
bf1ab978 | 206 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 207 | spu_release(ctx); |
c9101bdb | 208 | |
67207b96 AB |
209 | return ret; |
210 | } | |
211 | ||
212 | static ssize_t | |
213 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 214 | size_t size, loff_t *ppos) |
67207b96 AB |
215 | { |
216 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 217 | char *local_store; |
aa0ed2bd | 218 | loff_t pos = *ppos; |
8b3d6663 | 219 | int ret; |
67207b96 | 220 | |
aa0ed2bd AB |
221 | if (pos < 0) |
222 | return -EINVAL; | |
223 | if (pos > LS_SIZE) | |
67207b96 | 224 | return -EFBIG; |
aa0ed2bd AB |
225 | if (size > LS_SIZE - pos) |
226 | size = LS_SIZE - pos; | |
8b3d6663 | 227 | |
c9101bdb CH |
228 | ret = spu_acquire(ctx); |
229 | if (ret) | |
230 | return ret; | |
231 | ||
8b3d6663 | 232 | local_store = ctx->ops->get_ls(ctx); |
aa0ed2bd | 233 | ret = copy_from_user(local_store + pos, buffer, size); |
8b3d6663 | 234 | spu_release(ctx); |
aa0ed2bd AB |
235 | |
236 | if (ret) | |
237 | return -EFAULT; | |
238 | *ppos = pos + size; | |
239 | return size; | |
67207b96 AB |
240 | } |
241 | ||
b1e2270f NP |
242 | static int |
243 | spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
8b3d6663 | 244 | { |
f1fa74f4 | 245 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
246 | unsigned long address = (unsigned long)vmf->virtual_address; |
247 | unsigned long pfn, offset; | |
248 | ||
f1fa74f4 BH |
249 | #ifdef CONFIG_SPU_FS_64K_LS |
250 | struct spu_state *csa = &ctx->csa; | |
251 | int psize; | |
252 | ||
253 | /* Check what page size we are using */ | |
254 | psize = get_slice_psize(vma->vm_mm, address); | |
255 | ||
256 | /* Some sanity checking */ | |
257 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); | |
258 | ||
259 | /* Wow, 64K, cool, we need to align the address though */ | |
260 | if (csa->use_big_pages) { | |
261 | BUG_ON(vma->vm_start & 0xffff); | |
262 | address &= ~0xfffful; | |
263 | } | |
264 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
8b3d6663 | 265 | |
b1e2270f | 266 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 267 | if (offset >= LS_SIZE) |
b1e2270f | 268 | return VM_FAULT_SIGBUS; |
128b8546 | 269 | |
b1e2270f NP |
270 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
271 | address, offset); | |
f1fa74f4 | 272 | |
c9101bdb | 273 | if (spu_acquire(ctx)) |
b1e2270f | 274 | return VM_FAULT_NOPAGE; |
8b3d6663 | 275 | |
ac91cb8d | 276 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 277 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 278 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 279 | } else { |
64b3d0e8 | 280 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 281 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 282 | } |
78bde53e | 283 | vm_insert_pfn(vma, address, pfn); |
8b3d6663 | 284 | |
78bde53e | 285 | spu_release(ctx); |
8b3d6663 | 286 | |
b1e2270f | 287 | return VM_FAULT_NOPAGE; |
8b3d6663 AB |
288 | } |
289 | ||
a352894d BH |
290 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
291 | unsigned long address, | |
292 | void *buf, int len, int write) | |
293 | { | |
294 | struct spu_context *ctx = vma->vm_file->private_data; | |
295 | unsigned long offset = address - vma->vm_start; | |
296 | char *local_store; | |
297 | ||
298 | if (write && !(vma->vm_flags & VM_WRITE)) | |
299 | return -EACCES; | |
300 | if (spu_acquire(ctx)) | |
301 | return -EINTR; | |
302 | if ((offset + len) > vma->vm_end) | |
303 | len = vma->vm_end - offset; | |
304 | local_store = ctx->ops->get_ls(ctx); | |
305 | if (write) | |
306 | memcpy_toio(local_store + offset, buf, len); | |
307 | else | |
308 | memcpy_fromio(buf, local_store + offset, len); | |
309 | spu_release(ctx); | |
310 | return len; | |
311 | } | |
78bde53e | 312 | |
f0f37e2f | 313 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 314 | .fault = spufs_mem_mmap_fault, |
a352894d | 315 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
316 | }; |
317 | ||
f1fa74f4 | 318 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 319 | { |
f1fa74f4 BH |
320 | #ifdef CONFIG_SPU_FS_64K_LS |
321 | struct spu_context *ctx = file->private_data; | |
322 | struct spu_state *csa = &ctx->csa; | |
323 | ||
324 | /* Sanity check VMA alignment */ | |
325 | if (csa->use_big_pages) { | |
326 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," | |
327 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, | |
328 | vma->vm_pgoff); | |
329 | if (vma->vm_start & 0xffff) | |
330 | return -EINVAL; | |
331 | if (vma->vm_pgoff & 0xf) | |
332 | return -EINVAL; | |
333 | } | |
334 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
335 | ||
8b3d6663 AB |
336 | if (!(vma->vm_flags & VM_SHARED)) |
337 | return -EINVAL; | |
67207b96 | 338 | |
78bde53e | 339 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 340 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
341 | |
342 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
343 | return 0; |
344 | } | |
345 | ||
f1fa74f4 | 346 | #ifdef CONFIG_SPU_FS_64K_LS |
1238819a SS |
347 | static unsigned long spufs_get_unmapped_area(struct file *file, |
348 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
349 | unsigned long flags) | |
f1fa74f4 BH |
350 | { |
351 | struct spu_context *ctx = file->private_data; | |
352 | struct spu_state *csa = &ctx->csa; | |
353 | ||
354 | /* If not using big pages, fallback to normal MM g_u_a */ | |
355 | if (!csa->use_big_pages) | |
356 | return current->mm->get_unmapped_area(file, addr, len, | |
357 | pgoff, flags); | |
358 | ||
359 | /* Else, try to obtain a 64K pages slice */ | |
360 | return slice_get_unmapped_area(addr, len, flags, | |
361 | MMU_PAGE_64K, 1, 0); | |
362 | } | |
363 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
364 | ||
5dfe4c96 | 365 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
366 | .open = spufs_mem_open, |
367 | .release = spufs_mem_release, | |
368 | .read = spufs_mem_read, | |
369 | .write = spufs_mem_write, | |
370 | .llseek = generic_file_llseek, | |
371 | .mmap = spufs_mem_mmap, | |
f1fa74f4 BH |
372 | #ifdef CONFIG_SPU_FS_64K_LS |
373 | .get_unmapped_area = spufs_get_unmapped_area, | |
374 | #endif | |
8b3d6663 AB |
375 | }; |
376 | ||
b1e2270f NP |
377 | static int spufs_ps_fault(struct vm_area_struct *vma, |
378 | struct vm_fault *vmf, | |
78bde53e | 379 | unsigned long ps_offs, |
27d5bf2a | 380 | unsigned long ps_size) |
6df10a82 | 381 | { |
6df10a82 | 382 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 383 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
eebead5b | 384 | int ret = 0; |
6df10a82 | 385 | |
b1e2270f | 386 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 387 | |
27d5bf2a | 388 | if (offset >= ps_size) |
b1e2270f | 389 | return VM_FAULT_SIGBUS; |
6df10a82 | 390 | |
60657263 JK |
391 | if (fatal_signal_pending(current)) |
392 | return VM_FAULT_SIGBUS; | |
393 | ||
d5883137 JK |
394 | /* |
395 | * Because we release the mmap_sem, the context may be destroyed while | |
396 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
397 | * in the meantime. | |
398 | */ | |
399 | get_spu_context(ctx); | |
400 | ||
33bfd7a7 AB |
401 | /* |
402 | * We have to wait for context to be loaded before we have | |
403 | * pages to hand out to the user, but we don't want to wait | |
404 | * with the mmap_sem held. | |
405 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 406 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 407 | * hanged. |
78bde53e | 408 | */ |
c9101bdb | 409 | if (spu_acquire(ctx)) |
d5883137 | 410 | goto refault; |
c9101bdb | 411 | |
33bfd7a7 AB |
412 | if (ctx->state == SPU_STATE_SAVED) { |
413 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 414 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
eebead5b | 415 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 416 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 417 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
418 | } else { |
419 | area = ctx->spu->problem_phys + ps_offs; | |
b1e2270f NP |
420 | vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, |
421 | (area + offset) >> PAGE_SHIFT); | |
422 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); | |
33bfd7a7 | 423 | } |
6df10a82 | 424 | |
eebead5b CH |
425 | if (!ret) |
426 | spu_release(ctx); | |
d5883137 JK |
427 | |
428 | refault: | |
429 | put_spu_context(ctx); | |
b1e2270f | 430 | return VM_FAULT_NOPAGE; |
6df10a82 MN |
431 | } |
432 | ||
27d5bf2a | 433 | #if SPUFS_MMAP_4K |
b1e2270f NP |
434 | static int spufs_cntl_mmap_fault(struct vm_area_struct *vma, |
435 | struct vm_fault *vmf) | |
6df10a82 | 436 | { |
87ff6090 | 437 | return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
438 | } |
439 | ||
f0f37e2f | 440 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 441 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
442 | }; |
443 | ||
444 | /* | |
445 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
446 | */ |
447 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
448 | { | |
449 | if (!(vma->vm_flags & VM_SHARED)) | |
450 | return -EINVAL; | |
451 | ||
78bde53e | 452 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 453 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
454 | |
455 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
456 | return 0; | |
457 | } | |
27d5bf2a BH |
458 | #else /* SPUFS_MMAP_4K */ |
459 | #define spufs_cntl_mmap NULL | |
460 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 461 | |
197b1a82 | 462 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 463 | { |
e1dbff2b | 464 | struct spu_context *ctx = data; |
c9101bdb | 465 | int ret; |
6df10a82 | 466 | |
c9101bdb CH |
467 | ret = spu_acquire(ctx); |
468 | if (ret) | |
469 | return ret; | |
197b1a82 | 470 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
471 | spu_release(ctx); |
472 | ||
197b1a82 | 473 | return 0; |
6df10a82 MN |
474 | } |
475 | ||
197b1a82 | 476 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 477 | { |
e1dbff2b | 478 | struct spu_context *ctx = data; |
c9101bdb | 479 | int ret; |
e1dbff2b | 480 | |
c9101bdb CH |
481 | ret = spu_acquire(ctx); |
482 | if (ret) | |
483 | return ret; | |
e1dbff2b AB |
484 | ctx->ops->runcntl_write(ctx, val); |
485 | spu_release(ctx); | |
197b1a82 CH |
486 | |
487 | return 0; | |
6df10a82 MN |
488 | } |
489 | ||
e1dbff2b | 490 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 491 | { |
e1dbff2b AB |
492 | struct spufs_inode_info *i = SPUFS_I(inode); |
493 | struct spu_context *ctx = i->i_ctx; | |
494 | ||
47d3a5fa | 495 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 496 | file->private_data = ctx; |
43c2bbd9 CH |
497 | if (!i->i_openers++) |
498 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 499 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 500 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 501 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
502 | } |
503 | ||
43c2bbd9 CH |
504 | static int |
505 | spufs_cntl_release(struct inode *inode, struct file *file) | |
506 | { | |
507 | struct spufs_inode_info *i = SPUFS_I(inode); | |
508 | struct spu_context *ctx = i->i_ctx; | |
509 | ||
74bedc4d | 510 | simple_attr_release(inode, file); |
43c2bbd9 | 511 | |
47d3a5fa | 512 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
513 | if (!--i->i_openers) |
514 | ctx->cntl = NULL; | |
47d3a5fa | 515 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
516 | return 0; |
517 | } | |
518 | ||
5dfe4c96 | 519 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 520 | .open = spufs_cntl_open, |
43c2bbd9 | 521 | .release = spufs_cntl_release, |
8b88b099 CH |
522 | .read = simple_attr_read, |
523 | .write = simple_attr_write, | |
6df10a82 | 524 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
525 | }; |
526 | ||
8b3d6663 AB |
527 | static int |
528 | spufs_regs_open(struct inode *inode, struct file *file) | |
529 | { | |
530 | struct spufs_inode_info *i = SPUFS_I(inode); | |
531 | file->private_data = i->i_ctx; | |
532 | return 0; | |
533 | } | |
534 | ||
bf1ab978 DGM |
535 | static ssize_t |
536 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
537 | size_t size, loff_t *pos) | |
538 | { | |
539 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
540 | return simple_read_from_buffer(buffer, size, pos, | |
541 | lscsa->gprs, sizeof lscsa->gprs); | |
542 | } | |
543 | ||
8b3d6663 AB |
544 | static ssize_t |
545 | spufs_regs_read(struct file *file, char __user *buffer, | |
546 | size_t size, loff_t *pos) | |
547 | { | |
8b3d6663 | 548 | int ret; |
bf1ab978 | 549 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 550 | |
f027faa2 JK |
551 | /* pre-check for file position: if we'd return EOF, there's no point |
552 | * causing a deschedule */ | |
553 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
554 | return 0; | |
555 | ||
c9101bdb CH |
556 | ret = spu_acquire_saved(ctx); |
557 | if (ret) | |
558 | return ret; | |
bf1ab978 | 559 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 560 | spu_release_saved(ctx); |
8b3d6663 AB |
561 | return ret; |
562 | } | |
563 | ||
564 | static ssize_t | |
565 | spufs_regs_write(struct file *file, const char __user *buffer, | |
566 | size_t size, loff_t *pos) | |
567 | { | |
568 | struct spu_context *ctx = file->private_data; | |
569 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
570 | int ret; | |
571 | ||
d219889b | 572 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 573 | return -EFBIG; |
d219889b JK |
574 | |
575 | size = min_t(ssize_t, sizeof(lscsa->gprs) - *pos, size); | |
8b3d6663 AB |
576 | *pos += size; |
577 | ||
c9101bdb CH |
578 | ret = spu_acquire_saved(ctx); |
579 | if (ret) | |
580 | return ret; | |
8b3d6663 | 581 | |
2fb4423a | 582 | ret = copy_from_user((char *)lscsa->gprs + *pos - size, |
8b3d6663 AB |
583 | buffer, size) ? -EFAULT : size; |
584 | ||
27b1ea09 | 585 | spu_release_saved(ctx); |
8b3d6663 AB |
586 | return ret; |
587 | } | |
588 | ||
5dfe4c96 | 589 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
590 | .open = spufs_regs_open, |
591 | .read = spufs_regs_read, | |
592 | .write = spufs_regs_write, | |
67207b96 AB |
593 | .llseek = generic_file_llseek, |
594 | }; | |
595 | ||
bf1ab978 DGM |
596 | static ssize_t |
597 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
598 | size_t size, loff_t * pos) | |
599 | { | |
600 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
601 | return simple_read_from_buffer(buffer, size, pos, | |
602 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
603 | } | |
604 | ||
8b3d6663 AB |
605 | static ssize_t |
606 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
607 | size_t size, loff_t * pos) | |
608 | { | |
8b3d6663 | 609 | int ret; |
bf1ab978 | 610 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 611 | |
c9101bdb CH |
612 | ret = spu_acquire_saved(ctx); |
613 | if (ret) | |
614 | return ret; | |
bf1ab978 | 615 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 616 | spu_release_saved(ctx); |
8b3d6663 AB |
617 | return ret; |
618 | } | |
619 | ||
620 | static ssize_t | |
621 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
622 | size_t size, loff_t * pos) | |
623 | { | |
624 | struct spu_context *ctx = file->private_data; | |
625 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
626 | int ret; | |
627 | ||
d219889b | 628 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 629 | return -EFBIG; |
8b3d6663 | 630 | |
d219889b JK |
631 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); |
632 | ||
c9101bdb CH |
633 | ret = spu_acquire_saved(ctx); |
634 | if (ret) | |
635 | return ret; | |
8b3d6663 | 636 | |
c9101bdb | 637 | *pos += size; |
8b3d6663 AB |
638 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
639 | buffer, size) ? -EFAULT : size; | |
640 | ||
27b1ea09 | 641 | spu_release_saved(ctx); |
8b3d6663 AB |
642 | return ret; |
643 | } | |
644 | ||
5dfe4c96 | 645 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
646 | .open = spufs_regs_open, |
647 | .read = spufs_fpcr_read, | |
648 | .write = spufs_fpcr_write, | |
649 | .llseek = generic_file_llseek, | |
650 | }; | |
651 | ||
67207b96 AB |
652 | /* generic open function for all pipe-like files */ |
653 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
654 | { | |
655 | struct spufs_inode_info *i = SPUFS_I(inode); | |
656 | file->private_data = i->i_ctx; | |
657 | ||
658 | return nonseekable_open(inode, file); | |
659 | } | |
660 | ||
cdcc89bb AB |
661 | /* |
662 | * Read as many bytes from the mailbox as possible, until | |
663 | * one of the conditions becomes true: | |
664 | * | |
665 | * - no more data available in the mailbox | |
666 | * - end of the user provided buffer | |
667 | * - end of the mapped area | |
668 | */ | |
67207b96 AB |
669 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
670 | size_t len, loff_t *pos) | |
671 | { | |
8b3d6663 | 672 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
673 | u32 mbox_data, __user *udata; |
674 | ssize_t count; | |
67207b96 AB |
675 | |
676 | if (len < 4) | |
677 | return -EINVAL; | |
678 | ||
cdcc89bb AB |
679 | if (!access_ok(VERIFY_WRITE, buf, len)) |
680 | return -EFAULT; | |
681 | ||
682 | udata = (void __user *)buf; | |
683 | ||
c9101bdb CH |
684 | count = spu_acquire(ctx); |
685 | if (count) | |
686 | return count; | |
687 | ||
274cef5e | 688 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
689 | int ret; |
690 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
691 | if (ret == 0) | |
692 | break; | |
693 | ||
694 | /* | |
695 | * at the end of the mapped area, we can fault | |
696 | * but still need to return the data we have | |
697 | * read successfully so far. | |
698 | */ | |
699 | ret = __put_user(mbox_data, udata); | |
700 | if (ret) { | |
701 | if (!count) | |
702 | count = -EFAULT; | |
703 | break; | |
704 | } | |
705 | } | |
8b3d6663 | 706 | spu_release(ctx); |
67207b96 | 707 | |
cdcc89bb AB |
708 | if (!count) |
709 | count = -EAGAIN; | |
67207b96 | 710 | |
cdcc89bb | 711 | return count; |
67207b96 AB |
712 | } |
713 | ||
5dfe4c96 | 714 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
715 | .open = spufs_pipe_open, |
716 | .read = spufs_mbox_read, | |
717 | }; | |
718 | ||
719 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
720 | size_t len, loff_t *pos) | |
721 | { | |
8b3d6663 | 722 | struct spu_context *ctx = file->private_data; |
c9101bdb | 723 | ssize_t ret; |
67207b96 AB |
724 | u32 mbox_stat; |
725 | ||
726 | if (len < 4) | |
727 | return -EINVAL; | |
728 | ||
c9101bdb CH |
729 | ret = spu_acquire(ctx); |
730 | if (ret) | |
731 | return ret; | |
8b3d6663 AB |
732 | |
733 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
734 | ||
735 | spu_release(ctx); | |
67207b96 AB |
736 | |
737 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
738 | return -EFAULT; | |
739 | ||
740 | return 4; | |
741 | } | |
742 | ||
5dfe4c96 | 743 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
744 | .open = spufs_pipe_open, |
745 | .read = spufs_mbox_stat_read, | |
746 | }; | |
747 | ||
748 | /* low-level ibox access function */ | |
8b3d6663 | 749 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 750 | { |
8b3d6663 AB |
751 | return ctx->ops->ibox_read(ctx, data); |
752 | } | |
67207b96 | 753 | |
8b3d6663 AB |
754 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
755 | { | |
756 | struct spu_context *ctx = file->private_data; | |
67207b96 | 757 | |
8b3d6663 | 758 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 759 | } |
67207b96 | 760 | |
8b3d6663 AB |
761 | /* interrupt-level ibox callback function. */ |
762 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 763 | { |
8b3d6663 AB |
764 | struct spu_context *ctx = spu->ctx; |
765 | ||
e65c2f6f LB |
766 | if (!ctx) |
767 | return; | |
768 | ||
8b3d6663 AB |
769 | wake_up_all(&ctx->ibox_wq); |
770 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
771 | } |
772 | ||
cdcc89bb AB |
773 | /* |
774 | * Read as many bytes from the interrupt mailbox as possible, until | |
775 | * one of the conditions becomes true: | |
776 | * | |
777 | * - no more data available in the mailbox | |
778 | * - end of the user provided buffer | |
779 | * - end of the mapped area | |
780 | * | |
781 | * If the file is opened without O_NONBLOCK, we wait here until | |
782 | * any data is available, but return when we have been able to | |
783 | * read something. | |
784 | */ | |
67207b96 AB |
785 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
786 | size_t len, loff_t *pos) | |
787 | { | |
8b3d6663 | 788 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
789 | u32 ibox_data, __user *udata; |
790 | ssize_t count; | |
67207b96 AB |
791 | |
792 | if (len < 4) | |
793 | return -EINVAL; | |
794 | ||
cdcc89bb AB |
795 | if (!access_ok(VERIFY_WRITE, buf, len)) |
796 | return -EFAULT; | |
797 | ||
798 | udata = (void __user *)buf; | |
799 | ||
c9101bdb CH |
800 | count = spu_acquire(ctx); |
801 | if (count) | |
eebead5b | 802 | goto out; |
67207b96 | 803 | |
cdcc89bb AB |
804 | /* wait only for the first element */ |
805 | count = 0; | |
67207b96 | 806 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 807 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 808 | count = -EAGAIN; |
eebead5b CH |
809 | goto out_unlock; |
810 | } | |
67207b96 | 811 | } else { |
cdcc89bb | 812 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
813 | if (count) |
814 | goto out; | |
67207b96 AB |
815 | } |
816 | ||
cdcc89bb AB |
817 | /* if we can't write at all, return -EFAULT */ |
818 | count = __put_user(ibox_data, udata); | |
819 | if (count) | |
eebead5b | 820 | goto out_unlock; |
8b3d6663 | 821 | |
cdcc89bb AB |
822 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
823 | int ret; | |
824 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
825 | if (ret == 0) | |
826 | break; | |
827 | /* | |
828 | * at the end of the mapped area, we can fault | |
829 | * but still need to return the data we have | |
830 | * read successfully so far. | |
831 | */ | |
832 | ret = __put_user(ibox_data, udata); | |
833 | if (ret) | |
834 | break; | |
835 | } | |
67207b96 | 836 | |
eebead5b | 837 | out_unlock: |
cdcc89bb | 838 | spu_release(ctx); |
eebead5b | 839 | out: |
cdcc89bb | 840 | return count; |
67207b96 AB |
841 | } |
842 | ||
843 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
844 | { | |
8b3d6663 | 845 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
846 | unsigned int mask; |
847 | ||
8b3d6663 | 848 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 849 | |
c9101bdb CH |
850 | /* |
851 | * For now keep this uninterruptible and also ignore the rule | |
852 | * that poll should not sleep. Will be fixed later. | |
853 | */ | |
854 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
855 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
856 | spu_release(ctx); | |
67207b96 AB |
857 | |
858 | return mask; | |
859 | } | |
860 | ||
5dfe4c96 | 861 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
862 | .open = spufs_pipe_open, |
863 | .read = spufs_ibox_read, | |
864 | .poll = spufs_ibox_poll, | |
865 | .fasync = spufs_ibox_fasync, | |
866 | }; | |
867 | ||
868 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
869 | size_t len, loff_t *pos) | |
870 | { | |
8b3d6663 | 871 | struct spu_context *ctx = file->private_data; |
c9101bdb | 872 | ssize_t ret; |
67207b96 AB |
873 | u32 ibox_stat; |
874 | ||
875 | if (len < 4) | |
876 | return -EINVAL; | |
877 | ||
c9101bdb CH |
878 | ret = spu_acquire(ctx); |
879 | if (ret) | |
880 | return ret; | |
8b3d6663 AB |
881 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
882 | spu_release(ctx); | |
67207b96 AB |
883 | |
884 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
885 | return -EFAULT; | |
886 | ||
887 | return 4; | |
888 | } | |
889 | ||
5dfe4c96 | 890 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
891 | .open = spufs_pipe_open, |
892 | .read = spufs_ibox_stat_read, | |
893 | }; | |
894 | ||
895 | /* low-level mailbox write */ | |
8b3d6663 | 896 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 897 | { |
8b3d6663 AB |
898 | return ctx->ops->wbox_write(ctx, data); |
899 | } | |
67207b96 | 900 | |
8b3d6663 AB |
901 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
902 | { | |
903 | struct spu_context *ctx = file->private_data; | |
904 | int ret; | |
67207b96 | 905 | |
8b3d6663 | 906 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 907 | |
67207b96 AB |
908 | return ret; |
909 | } | |
67207b96 | 910 | |
8b3d6663 AB |
911 | /* interrupt-level wbox callback function. */ |
912 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 913 | { |
8b3d6663 AB |
914 | struct spu_context *ctx = spu->ctx; |
915 | ||
e65c2f6f LB |
916 | if (!ctx) |
917 | return; | |
918 | ||
8b3d6663 AB |
919 | wake_up_all(&ctx->wbox_wq); |
920 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
921 | } |
922 | ||
cdcc89bb AB |
923 | /* |
924 | * Write as many bytes to the interrupt mailbox as possible, until | |
925 | * one of the conditions becomes true: | |
926 | * | |
927 | * - the mailbox is full | |
928 | * - end of the user provided buffer | |
929 | * - end of the mapped area | |
930 | * | |
931 | * If the file is opened without O_NONBLOCK, we wait here until | |
932 | * space is availabyl, but return when we have been able to | |
933 | * write something. | |
934 | */ | |
67207b96 AB |
935 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
936 | size_t len, loff_t *pos) | |
937 | { | |
8b3d6663 | 938 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
939 | u32 wbox_data, __user *udata; |
940 | ssize_t count; | |
67207b96 AB |
941 | |
942 | if (len < 4) | |
943 | return -EINVAL; | |
944 | ||
cdcc89bb AB |
945 | udata = (void __user *)buf; |
946 | if (!access_ok(VERIFY_READ, buf, len)) | |
947 | return -EFAULT; | |
948 | ||
949 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
950 | return -EFAULT; |
951 | ||
c9101bdb CH |
952 | count = spu_acquire(ctx); |
953 | if (count) | |
eebead5b | 954 | goto out; |
8b3d6663 | 955 | |
cdcc89bb AB |
956 | /* |
957 | * make sure we can at least write one element, by waiting | |
958 | * in case of !O_NONBLOCK | |
959 | */ | |
960 | count = 0; | |
67207b96 | 961 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 962 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 963 | count = -EAGAIN; |
eebead5b CH |
964 | goto out_unlock; |
965 | } | |
67207b96 | 966 | } else { |
cdcc89bb | 967 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
968 | if (count) |
969 | goto out; | |
67207b96 AB |
970 | } |
971 | ||
8b3d6663 | 972 | |
96de0e25 | 973 | /* write as much as possible */ |
cdcc89bb AB |
974 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
975 | int ret; | |
976 | ret = __get_user(wbox_data, udata); | |
977 | if (ret) | |
978 | break; | |
979 | ||
980 | ret = spu_wbox_write(ctx, wbox_data); | |
981 | if (ret == 0) | |
982 | break; | |
983 | } | |
984 | ||
eebead5b | 985 | out_unlock: |
cdcc89bb | 986 | spu_release(ctx); |
eebead5b | 987 | out: |
cdcc89bb | 988 | return count; |
67207b96 AB |
989 | } |
990 | ||
991 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
992 | { | |
8b3d6663 | 993 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
994 | unsigned int mask; |
995 | ||
8b3d6663 | 996 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 997 | |
c9101bdb CH |
998 | /* |
999 | * For now keep this uninterruptible and also ignore the rule | |
1000 | * that poll should not sleep. Will be fixed later. | |
1001 | */ | |
1002 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
1003 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
1004 | spu_release(ctx); | |
67207b96 AB |
1005 | |
1006 | return mask; | |
1007 | } | |
1008 | ||
5dfe4c96 | 1009 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
1010 | .open = spufs_pipe_open, |
1011 | .write = spufs_wbox_write, | |
1012 | .poll = spufs_wbox_poll, | |
1013 | .fasync = spufs_wbox_fasync, | |
1014 | }; | |
1015 | ||
1016 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
1017 | size_t len, loff_t *pos) | |
1018 | { | |
8b3d6663 | 1019 | struct spu_context *ctx = file->private_data; |
c9101bdb | 1020 | ssize_t ret; |
67207b96 AB |
1021 | u32 wbox_stat; |
1022 | ||
1023 | if (len < 4) | |
1024 | return -EINVAL; | |
1025 | ||
c9101bdb CH |
1026 | ret = spu_acquire(ctx); |
1027 | if (ret) | |
1028 | return ret; | |
8b3d6663 AB |
1029 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
1030 | spu_release(ctx); | |
67207b96 AB |
1031 | |
1032 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
1033 | return -EFAULT; | |
1034 | ||
1035 | return 4; | |
1036 | } | |
1037 | ||
5dfe4c96 | 1038 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
1039 | .open = spufs_pipe_open, |
1040 | .read = spufs_wbox_stat_read, | |
1041 | }; | |
1042 | ||
6df10a82 MN |
1043 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
1044 | { | |
1045 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1046 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1047 | |
47d3a5fa | 1048 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1049 | file->private_data = ctx; |
43c2bbd9 CH |
1050 | if (!i->i_openers++) |
1051 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 1052 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1053 | return nonseekable_open(inode, file); |
1054 | } | |
1055 | ||
43c2bbd9 CH |
1056 | static int |
1057 | spufs_signal1_release(struct inode *inode, struct file *file) | |
1058 | { | |
1059 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1060 | struct spu_context *ctx = i->i_ctx; | |
1061 | ||
47d3a5fa | 1062 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1063 | if (!--i->i_openers) |
1064 | ctx->signal1 = NULL; | |
47d3a5fa | 1065 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1066 | return 0; |
1067 | } | |
1068 | ||
bf1ab978 | 1069 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1070 | size_t len, loff_t *pos) |
1071 | { | |
17f88ceb | 1072 | int ret = 0; |
67207b96 AB |
1073 | u32 data; |
1074 | ||
67207b96 AB |
1075 | if (len < 4) |
1076 | return -EINVAL; | |
1077 | ||
17f88ceb DGM |
1078 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1079 | data = ctx->csa.spu_chnldata_RW[3]; | |
1080 | ret = 4; | |
1081 | } | |
8b3d6663 | 1082 | |
17f88ceb DGM |
1083 | if (!ret) |
1084 | goto out; | |
1085 | ||
67207b96 AB |
1086 | if (copy_to_user(buf, &data, 4)) |
1087 | return -EFAULT; | |
1088 | ||
17f88ceb DGM |
1089 | out: |
1090 | return ret; | |
67207b96 AB |
1091 | } |
1092 | ||
bf1ab978 DGM |
1093 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1094 | size_t len, loff_t *pos) | |
1095 | { | |
1096 | int ret; | |
1097 | struct spu_context *ctx = file->private_data; | |
1098 | ||
c9101bdb CH |
1099 | ret = spu_acquire_saved(ctx); |
1100 | if (ret) | |
1101 | return ret; | |
bf1ab978 | 1102 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1103 | spu_release_saved(ctx); |
bf1ab978 DGM |
1104 | |
1105 | return ret; | |
1106 | } | |
1107 | ||
67207b96 AB |
1108 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1109 | size_t len, loff_t *pos) | |
1110 | { | |
1111 | struct spu_context *ctx; | |
c9101bdb | 1112 | ssize_t ret; |
67207b96 AB |
1113 | u32 data; |
1114 | ||
1115 | ctx = file->private_data; | |
67207b96 AB |
1116 | |
1117 | if (len < 4) | |
1118 | return -EINVAL; | |
1119 | ||
1120 | if (copy_from_user(&data, buf, 4)) | |
1121 | return -EFAULT; | |
1122 | ||
c9101bdb CH |
1123 | ret = spu_acquire(ctx); |
1124 | if (ret) | |
1125 | return ret; | |
8b3d6663 AB |
1126 | ctx->ops->signal1_write(ctx, data); |
1127 | spu_release(ctx); | |
67207b96 AB |
1128 | |
1129 | return 4; | |
1130 | } | |
1131 | ||
b1e2270f NP |
1132 | static int |
1133 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1134 | { |
87ff6090 JK |
1135 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1136 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1137 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1138 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1139 | * signal 1 and 2 area | |
1140 | */ | |
87ff6090 | 1141 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1142 | #else |
1143 | #error unsupported page size | |
1144 | #endif | |
6df10a82 MN |
1145 | } |
1146 | ||
f0f37e2f | 1147 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1148 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1149 | }; |
1150 | ||
1151 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1152 | { | |
1153 | if (!(vma->vm_flags & VM_SHARED)) | |
1154 | return -EINVAL; | |
1155 | ||
78bde53e | 1156 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1157 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1158 | |
1159 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1160 | return 0; | |
1161 | } | |
6df10a82 | 1162 | |
5dfe4c96 | 1163 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1164 | .open = spufs_signal1_open, |
43c2bbd9 | 1165 | .release = spufs_signal1_release, |
67207b96 AB |
1166 | .read = spufs_signal1_read, |
1167 | .write = spufs_signal1_write, | |
6df10a82 | 1168 | .mmap = spufs_signal1_mmap, |
67207b96 AB |
1169 | }; |
1170 | ||
d054b36f JK |
1171 | static const struct file_operations spufs_signal1_nosched_fops = { |
1172 | .open = spufs_signal1_open, | |
1173 | .release = spufs_signal1_release, | |
1174 | .write = spufs_signal1_write, | |
1175 | .mmap = spufs_signal1_mmap, | |
1176 | }; | |
1177 | ||
6df10a82 MN |
1178 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1179 | { | |
1180 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1181 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1182 | |
47d3a5fa | 1183 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1184 | file->private_data = ctx; |
43c2bbd9 CH |
1185 | if (!i->i_openers++) |
1186 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1187 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1188 | return nonseekable_open(inode, file); |
1189 | } | |
1190 | ||
43c2bbd9 CH |
1191 | static int |
1192 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1193 | { | |
1194 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1195 | struct spu_context *ctx = i->i_ctx; | |
1196 | ||
47d3a5fa | 1197 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1198 | if (!--i->i_openers) |
1199 | ctx->signal2 = NULL; | |
47d3a5fa | 1200 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1201 | return 0; |
1202 | } | |
1203 | ||
bf1ab978 | 1204 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1205 | size_t len, loff_t *pos) |
1206 | { | |
17f88ceb | 1207 | int ret = 0; |
67207b96 AB |
1208 | u32 data; |
1209 | ||
67207b96 AB |
1210 | if (len < 4) |
1211 | return -EINVAL; | |
1212 | ||
17f88ceb DGM |
1213 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1214 | data = ctx->csa.spu_chnldata_RW[4]; | |
1215 | ret = 4; | |
1216 | } | |
8b3d6663 | 1217 | |
17f88ceb DGM |
1218 | if (!ret) |
1219 | goto out; | |
1220 | ||
67207b96 AB |
1221 | if (copy_to_user(buf, &data, 4)) |
1222 | return -EFAULT; | |
1223 | ||
17f88ceb | 1224 | out: |
bf1ab978 DGM |
1225 | return ret; |
1226 | } | |
1227 | ||
1228 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1229 | size_t len, loff_t *pos) | |
1230 | { | |
1231 | struct spu_context *ctx = file->private_data; | |
1232 | int ret; | |
1233 | ||
c9101bdb CH |
1234 | ret = spu_acquire_saved(ctx); |
1235 | if (ret) | |
1236 | return ret; | |
bf1ab978 | 1237 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1238 | spu_release_saved(ctx); |
bf1ab978 DGM |
1239 | |
1240 | return ret; | |
67207b96 AB |
1241 | } |
1242 | ||
1243 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1244 | size_t len, loff_t *pos) | |
1245 | { | |
1246 | struct spu_context *ctx; | |
c9101bdb | 1247 | ssize_t ret; |
67207b96 AB |
1248 | u32 data; |
1249 | ||
1250 | ctx = file->private_data; | |
67207b96 AB |
1251 | |
1252 | if (len < 4) | |
1253 | return -EINVAL; | |
1254 | ||
1255 | if (copy_from_user(&data, buf, 4)) | |
1256 | return -EFAULT; | |
1257 | ||
c9101bdb CH |
1258 | ret = spu_acquire(ctx); |
1259 | if (ret) | |
1260 | return ret; | |
8b3d6663 AB |
1261 | ctx->ops->signal2_write(ctx, data); |
1262 | spu_release(ctx); | |
67207b96 AB |
1263 | |
1264 | return 4; | |
1265 | } | |
1266 | ||
27d5bf2a | 1267 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1268 | static int |
1269 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1270 | { |
87ff6090 JK |
1271 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1272 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1273 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1274 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1275 | * signal 1 and 2 area | |
1276 | */ | |
87ff6090 | 1277 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1278 | #else |
1279 | #error unsupported page size | |
1280 | #endif | |
6df10a82 MN |
1281 | } |
1282 | ||
f0f37e2f | 1283 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1284 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1285 | }; |
1286 | ||
1287 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1288 | { | |
1289 | if (!(vma->vm_flags & VM_SHARED)) | |
1290 | return -EINVAL; | |
1291 | ||
78bde53e | 1292 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1293 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1294 | |
1295 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1296 | return 0; | |
1297 | } | |
27d5bf2a BH |
1298 | #else /* SPUFS_MMAP_4K */ |
1299 | #define spufs_signal2_mmap NULL | |
1300 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1301 | |
5dfe4c96 | 1302 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1303 | .open = spufs_signal2_open, |
43c2bbd9 | 1304 | .release = spufs_signal2_release, |
67207b96 AB |
1305 | .read = spufs_signal2_read, |
1306 | .write = spufs_signal2_write, | |
6df10a82 | 1307 | .mmap = spufs_signal2_mmap, |
67207b96 AB |
1308 | }; |
1309 | ||
d054b36f JK |
1310 | static const struct file_operations spufs_signal2_nosched_fops = { |
1311 | .open = spufs_signal2_open, | |
1312 | .release = spufs_signal2_release, | |
1313 | .write = spufs_signal2_write, | |
1314 | .mmap = spufs_signal2_mmap, | |
1315 | }; | |
1316 | ||
104f0cc2 ME |
1317 | /* |
1318 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1319 | * work of acquiring (or not) the SPU context before calling through | |
1320 | * to the actual get routine. The set routine is called directly. | |
1321 | */ | |
1322 | #define SPU_ATTR_NOACQUIRE 0 | |
1323 | #define SPU_ATTR_ACQUIRE 1 | |
1324 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1325 | ||
1326 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1327 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1328 | { \ |
1329 | struct spu_context *ctx = data; \ | |
c9101bdb | 1330 | int ret = 0; \ |
104f0cc2 ME |
1331 | \ |
1332 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1333 | ret = spu_acquire(ctx); \ |
1334 | if (ret) \ | |
1335 | return ret; \ | |
197b1a82 | 1336 | *val = __get(ctx); \ |
104f0cc2 ME |
1337 | spu_release(ctx); \ |
1338 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1339 | ret = spu_acquire_saved(ctx); \ |
1340 | if (ret) \ | |
1341 | return ret; \ | |
197b1a82 | 1342 | *val = __get(ctx); \ |
104f0cc2 ME |
1343 | spu_release_saved(ctx); \ |
1344 | } else \ | |
197b1a82 | 1345 | *val = __get(ctx); \ |
104f0cc2 | 1346 | \ |
197b1a82 | 1347 | return 0; \ |
104f0cc2 | 1348 | } \ |
197b1a82 | 1349 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1350 | |
197b1a82 | 1351 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1352 | { |
1353 | struct spu_context *ctx = data; | |
c9101bdb | 1354 | int ret; |
67207b96 | 1355 | |
c9101bdb CH |
1356 | ret = spu_acquire(ctx); |
1357 | if (ret) | |
1358 | return ret; | |
8b3d6663 AB |
1359 | ctx->ops->signal1_type_set(ctx, val); |
1360 | spu_release(ctx); | |
197b1a82 CH |
1361 | |
1362 | return 0; | |
67207b96 AB |
1363 | } |
1364 | ||
104f0cc2 | 1365 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1366 | { |
bf1ab978 DGM |
1367 | return ctx->ops->signal1_type_get(ctx); |
1368 | } | |
104f0cc2 | 1369 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1370 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1371 | |
67207b96 | 1372 | |
197b1a82 | 1373 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1374 | { |
1375 | struct spu_context *ctx = data; | |
c9101bdb | 1376 | int ret; |
67207b96 | 1377 | |
c9101bdb CH |
1378 | ret = spu_acquire(ctx); |
1379 | if (ret) | |
1380 | return ret; | |
8b3d6663 AB |
1381 | ctx->ops->signal2_type_set(ctx, val); |
1382 | spu_release(ctx); | |
197b1a82 CH |
1383 | |
1384 | return 0; | |
67207b96 AB |
1385 | } |
1386 | ||
104f0cc2 | 1387 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1388 | { |
bf1ab978 DGM |
1389 | return ctx->ops->signal2_type_get(ctx); |
1390 | } | |
104f0cc2 | 1391 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1392 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1393 | |
27d5bf2a | 1394 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1395 | static int |
1396 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1397 | { |
87ff6090 | 1398 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b AB |
1399 | } |
1400 | ||
f0f37e2f | 1401 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1402 | .fault = spufs_mss_mmap_fault, |
d9379c4b AB |
1403 | }; |
1404 | ||
1405 | /* | |
1406 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1407 | */ |
1408 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1409 | { | |
1410 | if (!(vma->vm_flags & VM_SHARED)) | |
1411 | return -EINVAL; | |
1412 | ||
78bde53e | 1413 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1414 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b AB |
1415 | |
1416 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1417 | return 0; | |
1418 | } | |
27d5bf2a BH |
1419 | #else /* SPUFS_MMAP_4K */ |
1420 | #define spufs_mss_mmap NULL | |
1421 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1422 | |
1423 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1424 | { | |
1425 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1426 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1427 | |
1428 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1429 | |
47d3a5fa | 1430 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1431 | if (!i->i_openers++) |
1432 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1433 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1434 | return nonseekable_open(inode, file); |
1435 | } | |
1436 | ||
43c2bbd9 CH |
1437 | static int |
1438 | spufs_mss_release(struct inode *inode, struct file *file) | |
1439 | { | |
1440 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1441 | struct spu_context *ctx = i->i_ctx; | |
1442 | ||
47d3a5fa | 1443 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1444 | if (!--i->i_openers) |
1445 | ctx->mss = NULL; | |
47d3a5fa | 1446 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1447 | return 0; |
1448 | } | |
1449 | ||
5dfe4c96 | 1450 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1451 | .open = spufs_mss_open, |
43c2bbd9 | 1452 | .release = spufs_mss_release, |
d9379c4b | 1453 | .mmap = spufs_mss_mmap, |
27d5bf2a BH |
1454 | }; |
1455 | ||
b1e2270f NP |
1456 | static int |
1457 | spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
27d5bf2a | 1458 | { |
87ff6090 | 1459 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1460 | } |
1461 | ||
f0f37e2f | 1462 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1463 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1464 | }; |
1465 | ||
1466 | /* | |
1467 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1468 | */ | |
1469 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1470 | { | |
1471 | if (!(vma->vm_flags & VM_SHARED)) | |
1472 | return -EINVAL; | |
1473 | ||
78bde53e | 1474 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1475 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1476 | |
1477 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1478 | return 0; | |
1479 | } | |
1480 | ||
1481 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1482 | { | |
1483 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1484 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1485 | |
47d3a5fa | 1486 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1487 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1488 | if (!i->i_openers++) |
1489 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1490 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1491 | return nonseekable_open(inode, file); |
1492 | } | |
1493 | ||
43c2bbd9 CH |
1494 | static int |
1495 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1496 | { | |
1497 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1498 | struct spu_context *ctx = i->i_ctx; | |
1499 | ||
47d3a5fa | 1500 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1501 | if (!--i->i_openers) |
1502 | ctx->psmap = NULL; | |
47d3a5fa | 1503 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1504 | return 0; |
1505 | } | |
1506 | ||
5dfe4c96 | 1507 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1508 | .open = spufs_psmap_open, |
43c2bbd9 | 1509 | .release = spufs_psmap_release, |
27d5bf2a | 1510 | .mmap = spufs_psmap_mmap, |
d9379c4b AB |
1511 | }; |
1512 | ||
1513 | ||
27d5bf2a | 1514 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1515 | static int |
1516 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1517 | { |
87ff6090 | 1518 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1519 | } |
1520 | ||
f0f37e2f | 1521 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1522 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1523 | }; |
1524 | ||
1525 | /* | |
1526 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1527 | */ |
1528 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1529 | { | |
1530 | if (!(vma->vm_flags & VM_SHARED)) | |
1531 | return -EINVAL; | |
1532 | ||
78bde53e | 1533 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1534 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1535 | |
1536 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1537 | return 0; | |
1538 | } | |
27d5bf2a BH |
1539 | #else /* SPUFS_MMAP_4K */ |
1540 | #define spufs_mfc_mmap NULL | |
1541 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1542 | |
1543 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1544 | { | |
1545 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1546 | struct spu_context *ctx = i->i_ctx; | |
1547 | ||
1548 | /* we don't want to deal with DMA into other processes */ | |
1549 | if (ctx->owner != current->mm) | |
1550 | return -EINVAL; | |
1551 | ||
1552 | if (atomic_read(&inode->i_count) != 1) | |
1553 | return -EBUSY; | |
1554 | ||
47d3a5fa | 1555 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1556 | file->private_data = ctx; |
43c2bbd9 CH |
1557 | if (!i->i_openers++) |
1558 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1559 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1560 | return nonseekable_open(inode, file); |
1561 | } | |
1562 | ||
43c2bbd9 CH |
1563 | static int |
1564 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1565 | { | |
1566 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1567 | struct spu_context *ctx = i->i_ctx; | |
1568 | ||
47d3a5fa | 1569 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1570 | if (!--i->i_openers) |
1571 | ctx->mfc = NULL; | |
47d3a5fa | 1572 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1573 | return 0; |
1574 | } | |
1575 | ||
a33a7d73 AB |
1576 | /* interrupt-level mfc callback function. */ |
1577 | void spufs_mfc_callback(struct spu *spu) | |
1578 | { | |
1579 | struct spu_context *ctx = spu->ctx; | |
1580 | ||
e65c2f6f LB |
1581 | if (!ctx) |
1582 | return; | |
1583 | ||
a33a7d73 AB |
1584 | wake_up_all(&ctx->mfc_wq); |
1585 | ||
e48b1b45 | 1586 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1587 | if (ctx->mfc_fasync) { |
1588 | u32 free_elements, tagstatus; | |
1589 | unsigned int mask; | |
1590 | ||
1591 | /* no need for spu_acquire in interrupt context */ | |
1592 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1593 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1594 | ||
1595 | mask = 0; | |
1596 | if (free_elements & 0xffff) | |
1597 | mask |= POLLOUT; | |
1598 | if (tagstatus & ctx->tagwait) | |
1599 | mask |= POLLIN; | |
1600 | ||
1601 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1606 | { | |
1607 | /* See if there is one tag group is complete */ | |
1608 | /* FIXME we need locking around tagwait */ | |
1609 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1610 | ctx->tagwait &= ~*status; | |
1611 | if (*status) | |
1612 | return 1; | |
1613 | ||
1614 | /* enable interrupt waiting for any tag group, | |
1615 | may silently fail if interrupts are already enabled */ | |
1616 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1617 | return 0; | |
1618 | } | |
1619 | ||
1620 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1621 | size_t size, loff_t *pos) | |
1622 | { | |
1623 | struct spu_context *ctx = file->private_data; | |
1624 | int ret = -EINVAL; | |
1625 | u32 status; | |
1626 | ||
1627 | if (size != 4) | |
1628 | goto out; | |
1629 | ||
c9101bdb CH |
1630 | ret = spu_acquire(ctx); |
1631 | if (ret) | |
1632 | return ret; | |
1633 | ||
1634 | ret = -EINVAL; | |
a33a7d73 AB |
1635 | if (file->f_flags & O_NONBLOCK) { |
1636 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1637 | if (!(status & ctx->tagwait)) | |
1638 | ret = -EAGAIN; | |
1639 | else | |
c9101bdb | 1640 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1641 | ctx->tagwait &= ~status; |
1642 | } else { | |
1643 | ret = spufs_wait(ctx->mfc_wq, | |
1644 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1645 | if (ret) |
1646 | goto out; | |
a33a7d73 AB |
1647 | } |
1648 | spu_release(ctx); | |
1649 | ||
a33a7d73 AB |
1650 | ret = 4; |
1651 | if (copy_to_user(buffer, &status, 4)) | |
1652 | ret = -EFAULT; | |
1653 | ||
1654 | out: | |
1655 | return ret; | |
1656 | } | |
1657 | ||
1658 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1659 | { | |
9477e455 | 1660 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1661 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1662 | ||
1663 | switch (cmd->cmd) { | |
1664 | case MFC_PUT_CMD: | |
1665 | case MFC_PUTF_CMD: | |
1666 | case MFC_PUTB_CMD: | |
1667 | case MFC_GET_CMD: | |
1668 | case MFC_GETF_CMD: | |
1669 | case MFC_GETB_CMD: | |
1670 | break; | |
1671 | default: | |
1672 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1673 | return -EIO; | |
1674 | } | |
1675 | ||
1676 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1677 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1678 | cmd->ea, cmd->lsa); |
1679 | return -EIO; | |
1680 | } | |
1681 | ||
1682 | switch (cmd->size & 0xf) { | |
1683 | case 1: | |
1684 | break; | |
1685 | case 2: | |
1686 | if (cmd->lsa & 1) | |
1687 | goto error; | |
1688 | break; | |
1689 | case 4: | |
1690 | if (cmd->lsa & 3) | |
1691 | goto error; | |
1692 | break; | |
1693 | case 8: | |
1694 | if (cmd->lsa & 7) | |
1695 | goto error; | |
1696 | break; | |
1697 | case 0: | |
1698 | if (cmd->lsa & 15) | |
1699 | goto error; | |
1700 | break; | |
1701 | error: | |
1702 | default: | |
1703 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1704 | cmd->lsa & 0xf, cmd->size); | |
1705 | return -EIO; | |
1706 | } | |
1707 | ||
1708 | if (cmd->size > 16 * 1024) { | |
1709 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1710 | return -EIO; | |
1711 | } | |
1712 | ||
1713 | if (cmd->tag & 0xfff0) { | |
1714 | /* we reserve the higher tag numbers for kernel use */ | |
1715 | pr_debug("invalid DMA tag\n"); | |
1716 | return -EIO; | |
1717 | } | |
1718 | ||
1719 | if (cmd->class) { | |
1720 | /* not supported in this version */ | |
1721 | pr_debug("invalid DMA class\n"); | |
1722 | return -EIO; | |
1723 | } | |
1724 | ||
1725 | return 0; | |
1726 | } | |
1727 | ||
1728 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1729 | struct mfc_dma_command cmd, | |
1730 | int *error) | |
1731 | { | |
1732 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1733 | if (*error == -EAGAIN) { | |
1734 | /* wait for any tag group to complete | |
1735 | so we have space for the new command */ | |
1736 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1737 | /* try again, because the queue might be | |
1738 | empty again */ | |
1739 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1740 | if (*error == -EAGAIN) | |
1741 | return 0; | |
1742 | } | |
1743 | return 1; | |
1744 | } | |
1745 | ||
1746 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1747 | size_t size, loff_t *pos) | |
1748 | { | |
1749 | struct spu_context *ctx = file->private_data; | |
1750 | struct mfc_dma_command cmd; | |
1751 | int ret = -EINVAL; | |
1752 | ||
1753 | if (size != sizeof cmd) | |
1754 | goto out; | |
1755 | ||
1756 | ret = -EFAULT; | |
1757 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1758 | goto out; | |
1759 | ||
1760 | ret = spufs_check_valid_dma(&cmd); | |
1761 | if (ret) | |
1762 | goto out; | |
1763 | ||
c9101bdb CH |
1764 | ret = spu_acquire(ctx); |
1765 | if (ret) | |
1766 | goto out; | |
1767 | ||
33bfd7a7 | 1768 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1769 | if (ret) |
1770 | goto out; | |
1771 | ||
a33a7d73 AB |
1772 | if (file->f_flags & O_NONBLOCK) { |
1773 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1774 | } else { | |
1775 | int status; | |
1776 | ret = spufs_wait(ctx->mfc_wq, | |
1777 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1778 | if (ret) |
1779 | goto out; | |
a33a7d73 AB |
1780 | if (status) |
1781 | ret = status; | |
1782 | } | |
a33a7d73 AB |
1783 | |
1784 | if (ret) | |
933b0e35 | 1785 | goto out_unlock; |
a33a7d73 AB |
1786 | |
1787 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1788 | ret = size; |
a33a7d73 | 1789 | |
933b0e35 KA |
1790 | out_unlock: |
1791 | spu_release(ctx); | |
a33a7d73 AB |
1792 | out: |
1793 | return ret; | |
1794 | } | |
1795 | ||
1796 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1797 | { | |
1798 | struct spu_context *ctx = file->private_data; | |
1799 | u32 free_elements, tagstatus; | |
1800 | unsigned int mask; | |
1801 | ||
933b0e35 KA |
1802 | poll_wait(file, &ctx->mfc_wq, wait); |
1803 | ||
c9101bdb CH |
1804 | /* |
1805 | * For now keep this uninterruptible and also ignore the rule | |
1806 | * that poll should not sleep. Will be fixed later. | |
1807 | */ | |
1808 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1809 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1810 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1811 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1812 | spu_release(ctx); | |
1813 | ||
a33a7d73 AB |
1814 | mask = 0; |
1815 | if (free_elements & 0xffff) | |
1816 | mask |= POLLOUT | POLLWRNORM; | |
1817 | if (tagstatus & ctx->tagwait) | |
1818 | mask |= POLLIN | POLLRDNORM; | |
1819 | ||
e48b1b45 | 1820 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1821 | free_elements, tagstatus, ctx->tagwait); |
1822 | ||
1823 | return mask; | |
1824 | } | |
1825 | ||
73b6af8a | 1826 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1827 | { |
1828 | struct spu_context *ctx = file->private_data; | |
1829 | int ret; | |
1830 | ||
c9101bdb CH |
1831 | ret = spu_acquire(ctx); |
1832 | if (ret) | |
eebead5b | 1833 | goto out; |
a33a7d73 AB |
1834 | #if 0 |
1835 | /* this currently hangs */ | |
1836 | ret = spufs_wait(ctx->mfc_wq, | |
1837 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1838 | if (ret) | |
1839 | goto out; | |
1840 | ret = spufs_wait(ctx->mfc_wq, | |
1841 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1842 | if (ret) |
1843 | goto out; | |
a33a7d73 AB |
1844 | #else |
1845 | ret = 0; | |
1846 | #endif | |
1847 | spu_release(ctx); | |
eebead5b | 1848 | out: |
a33a7d73 AB |
1849 | return ret; |
1850 | } | |
1851 | ||
7ea80859 | 1852 | static int spufs_mfc_fsync(struct file *file, int datasync) |
a33a7d73 | 1853 | { |
73b6af8a | 1854 | return spufs_mfc_flush(file, NULL); |
a33a7d73 AB |
1855 | } |
1856 | ||
1857 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1858 | { | |
1859 | struct spu_context *ctx = file->private_data; | |
1860 | ||
1861 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1862 | } | |
1863 | ||
5dfe4c96 | 1864 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1865 | .open = spufs_mfc_open, |
43c2bbd9 | 1866 | .release = spufs_mfc_release, |
a33a7d73 AB |
1867 | .read = spufs_mfc_read, |
1868 | .write = spufs_mfc_write, | |
1869 | .poll = spufs_mfc_poll, | |
1870 | .flush = spufs_mfc_flush, | |
1871 | .fsync = spufs_mfc_fsync, | |
1872 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1873 | .mmap = spufs_mfc_mmap, |
a33a7d73 AB |
1874 | }; |
1875 | ||
197b1a82 | 1876 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1877 | { |
1878 | struct spu_context *ctx = data; | |
c9101bdb CH |
1879 | int ret; |
1880 | ||
1881 | ret = spu_acquire(ctx); | |
1882 | if (ret) | |
1883 | return ret; | |
8b3d6663 AB |
1884 | ctx->ops->npc_write(ctx, val); |
1885 | spu_release(ctx); | |
197b1a82 CH |
1886 | |
1887 | return 0; | |
67207b96 AB |
1888 | } |
1889 | ||
104f0cc2 | 1890 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1891 | { |
1892 | return ctx->ops->npc_read(ctx); | |
1893 | } | |
104f0cc2 ME |
1894 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1895 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1896 | |
197b1a82 | 1897 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1898 | { |
1899 | struct spu_context *ctx = data; | |
1900 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1901 | int ret; |
1902 | ||
1903 | ret = spu_acquire_saved(ctx); | |
1904 | if (ret) | |
1905 | return ret; | |
8b3d6663 | 1906 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1907 | spu_release_saved(ctx); |
197b1a82 CH |
1908 | |
1909 | return 0; | |
8b3d6663 AB |
1910 | } |
1911 | ||
104f0cc2 | 1912 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1913 | { |
8b3d6663 | 1914 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1915 | return lscsa->decr.slot[0]; |
1916 | } | |
104f0cc2 ME |
1917 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1918 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1919 | |
197b1a82 | 1920 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1921 | { |
1922 | struct spu_context *ctx = data; | |
c9101bdb CH |
1923 | int ret; |
1924 | ||
1925 | ret = spu_acquire_saved(ctx); | |
1926 | if (ret) | |
1927 | return ret; | |
d40a01d4 MN |
1928 | if (val) |
1929 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1930 | else | |
1931 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1932 | spu_release_saved(ctx); |
197b1a82 CH |
1933 | |
1934 | return 0; | |
8b3d6663 AB |
1935 | } |
1936 | ||
104f0cc2 | 1937 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1938 | { |
d40a01d4 MN |
1939 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1940 | return SPU_DECR_STATUS_RUNNING; | |
1941 | else | |
1942 | return 0; | |
bf1ab978 | 1943 | } |
104f0cc2 ME |
1944 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1945 | spufs_decr_status_set, "0x%llx\n", | |
1946 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1947 | |
197b1a82 | 1948 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1949 | { |
1950 | struct spu_context *ctx = data; | |
1951 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1952 | int ret; |
1953 | ||
1954 | ret = spu_acquire_saved(ctx); | |
1955 | if (ret) | |
1956 | return ret; | |
8b3d6663 | 1957 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1958 | spu_release_saved(ctx); |
197b1a82 CH |
1959 | |
1960 | return 0; | |
8b3d6663 AB |
1961 | } |
1962 | ||
104f0cc2 | 1963 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1964 | { |
8b3d6663 | 1965 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1966 | return lscsa->event_mask.slot[0]; |
1967 | } | |
1968 | ||
104f0cc2 ME |
1969 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1970 | spufs_event_mask_set, "0x%llx\n", | |
1971 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1972 | |
104f0cc2 | 1973 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1974 | { |
b9e3bd77 | 1975 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1976 | u64 stat; |
b9e3bd77 DGM |
1977 | stat = state->spu_chnlcnt_RW[0]; |
1978 | if (stat) | |
bf1ab978 DGM |
1979 | return state->spu_chnldata_RW[0]; |
1980 | return 0; | |
1981 | } | |
104f0cc2 ME |
1982 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1983 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1984 | |
197b1a82 | 1985 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1986 | { |
1987 | struct spu_context *ctx = data; | |
1988 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1989 | int ret; |
1990 | ||
1991 | ret = spu_acquire_saved(ctx); | |
1992 | if (ret) | |
1993 | return ret; | |
8b3d6663 | 1994 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1995 | spu_release_saved(ctx); |
197b1a82 CH |
1996 | |
1997 | return 0; | |
8b3d6663 AB |
1998 | } |
1999 | ||
104f0cc2 | 2000 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 2001 | { |
8b3d6663 | 2002 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 2003 | return lscsa->srr0.slot[0]; |
8b3d6663 | 2004 | } |
104f0cc2 ME |
2005 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
2006 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 2007 | |
104f0cc2 | 2008 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 2009 | { |
7b1a7014 AB |
2010 | u64 num; |
2011 | ||
7b1a7014 AB |
2012 | if (ctx->state == SPU_STATE_RUNNABLE) |
2013 | num = ctx->spu->number; | |
2014 | else | |
2015 | num = (unsigned int)-1; | |
7b1a7014 AB |
2016 | |
2017 | return num; | |
2018 | } | |
104f0cc2 ME |
2019 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
2020 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 2021 | |
104f0cc2 | 2022 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
2023 | { |
2024 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 2025 | return ctx->object_id; |
bf1ab978 DGM |
2026 | } |
2027 | ||
197b1a82 | 2028 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
2029 | { |
2030 | struct spu_context *ctx = data; | |
2031 | ctx->object_id = id; | |
197b1a82 CH |
2032 | |
2033 | return 0; | |
86767277 AB |
2034 | } |
2035 | ||
104f0cc2 ME |
2036 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
2037 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 2038 | |
104f0cc2 | 2039 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 2040 | { |
bf1ab978 DGM |
2041 | return ctx->csa.priv2.spu_lslr_RW; |
2042 | } | |
104f0cc2 ME |
2043 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
2044 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
2045 | |
2046 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2047 | { | |
2048 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2049 | struct spu_context *ctx = i->i_ctx; | |
2050 | file->private_data = ctx; | |
2051 | return 0; | |
2052 | } | |
2053 | ||
cbe709c1 BH |
2054 | static int spufs_caps_show(struct seq_file *s, void *private) |
2055 | { | |
2056 | struct spu_context *ctx = s->private; | |
2057 | ||
2058 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2059 | seq_puts(s, "sched\n"); | |
2060 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2061 | seq_puts(s, "step\n"); | |
2062 | return 0; | |
2063 | } | |
2064 | ||
2065 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2066 | { | |
2067 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2068 | } | |
2069 | ||
2070 | static const struct file_operations spufs_caps_fops = { | |
2071 | .open = spufs_caps_open, | |
2072 | .read = seq_read, | |
2073 | .llseek = seq_lseek, | |
2074 | .release = single_release, | |
2075 | }; | |
2076 | ||
bf1ab978 DGM |
2077 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2078 | char __user *buf, size_t len, loff_t *pos) | |
2079 | { | |
bf1ab978 DGM |
2080 | u32 data; |
2081 | ||
cbea9238 JK |
2082 | /* EOF if there's no entry in the mbox */ |
2083 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2084 | return 0; | |
2085 | ||
2086 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2087 | |
2088 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2089 | } | |
2090 | ||
69a2f00c DGM |
2091 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2092 | size_t len, loff_t *pos) | |
2093 | { | |
bf1ab978 | 2094 | int ret; |
69a2f00c | 2095 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2096 | |
2097 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2098 | return -EFAULT; | |
2099 | ||
c9101bdb CH |
2100 | ret = spu_acquire_saved(ctx); |
2101 | if (ret) | |
2102 | return ret; | |
69a2f00c | 2103 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2104 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2105 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2106 | spu_release_saved(ctx); |
69a2f00c | 2107 | |
bf1ab978 | 2108 | return ret; |
69a2f00c DGM |
2109 | } |
2110 | ||
5dfe4c96 | 2111 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2112 | .open = spufs_info_open, |
2113 | .read = spufs_mbox_info_read, | |
2114 | .llseek = generic_file_llseek, | |
2115 | }; | |
2116 | ||
bf1ab978 DGM |
2117 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2118 | char __user *buf, size_t len, loff_t *pos) | |
2119 | { | |
bf1ab978 DGM |
2120 | u32 data; |
2121 | ||
cbea9238 JK |
2122 | /* EOF if there's no entry in the ibox */ |
2123 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2124 | return 0; | |
2125 | ||
2126 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2127 | |
2128 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2129 | } | |
2130 | ||
69a2f00c DGM |
2131 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2132 | size_t len, loff_t *pos) | |
2133 | { | |
2134 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2135 | int ret; |
69a2f00c DGM |
2136 | |
2137 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2138 | return -EFAULT; | |
2139 | ||
c9101bdb CH |
2140 | ret = spu_acquire_saved(ctx); |
2141 | if (ret) | |
2142 | return ret; | |
69a2f00c | 2143 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2144 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2145 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2146 | spu_release_saved(ctx); |
69a2f00c | 2147 | |
bf1ab978 | 2148 | return ret; |
69a2f00c DGM |
2149 | } |
2150 | ||
5dfe4c96 | 2151 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2152 | .open = spufs_info_open, |
2153 | .read = spufs_ibox_info_read, | |
2154 | .llseek = generic_file_llseek, | |
2155 | }; | |
2156 | ||
bf1ab978 DGM |
2157 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2158 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2159 | { |
69a2f00c DGM |
2160 | int i, cnt; |
2161 | u32 data[4]; | |
2162 | u32 wbox_stat; | |
2163 | ||
bf1ab978 DGM |
2164 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2165 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2166 | for (i = 0; i < cnt; i++) { | |
2167 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2168 | } | |
2169 | ||
2170 | return simple_read_from_buffer(buf, len, pos, &data, | |
2171 | cnt * sizeof(u32)); | |
2172 | } | |
2173 | ||
2174 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2175 | size_t len, loff_t *pos) | |
2176 | { | |
2177 | struct spu_context *ctx = file->private_data; | |
2178 | int ret; | |
2179 | ||
69a2f00c DGM |
2180 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2181 | return -EFAULT; | |
2182 | ||
c9101bdb CH |
2183 | ret = spu_acquire_saved(ctx); |
2184 | if (ret) | |
2185 | return ret; | |
69a2f00c | 2186 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2187 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2188 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2189 | spu_release_saved(ctx); |
69a2f00c | 2190 | |
bf1ab978 | 2191 | return ret; |
69a2f00c DGM |
2192 | } |
2193 | ||
5dfe4c96 | 2194 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2195 | .open = spufs_info_open, |
2196 | .read = spufs_wbox_info_read, | |
2197 | .llseek = generic_file_llseek, | |
2198 | }; | |
2199 | ||
bf1ab978 DGM |
2200 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2201 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2202 | { |
b9e3bd77 DGM |
2203 | struct spu_dma_info info; |
2204 | struct mfc_cq_sr *qp, *spuqp; | |
2205 | int i; | |
2206 | ||
b9e3bd77 DGM |
2207 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2208 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2209 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2210 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2211 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2212 | for (i = 0; i < 16; i++) { | |
2213 | qp = &info.dma_info_command_data[i]; | |
2214 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2215 | ||
2216 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2217 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2218 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2219 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2220 | } | |
b9e3bd77 DGM |
2221 | |
2222 | return simple_read_from_buffer(buf, len, pos, &info, | |
2223 | sizeof info); | |
2224 | } | |
2225 | ||
bf1ab978 DGM |
2226 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2227 | size_t len, loff_t *pos) | |
2228 | { | |
2229 | struct spu_context *ctx = file->private_data; | |
2230 | int ret; | |
2231 | ||
2232 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2233 | return -EFAULT; | |
2234 | ||
c9101bdb CH |
2235 | ret = spu_acquire_saved(ctx); |
2236 | if (ret) | |
2237 | return ret; | |
bf1ab978 DGM |
2238 | spin_lock(&ctx->csa.register_lock); |
2239 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2240 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2241 | spu_release_saved(ctx); |
bf1ab978 DGM |
2242 | |
2243 | return ret; | |
2244 | } | |
2245 | ||
5dfe4c96 | 2246 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2247 | .open = spufs_info_open, |
2248 | .read = spufs_dma_info_read, | |
2249 | }; | |
2250 | ||
bf1ab978 DGM |
2251 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2252 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2253 | { |
b9e3bd77 | 2254 | struct spu_proxydma_info info; |
b9e3bd77 | 2255 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2256 | int ret = sizeof info; |
b9e3bd77 DGM |
2257 | int i; |
2258 | ||
2259 | if (len < ret) | |
2260 | return -EINVAL; | |
2261 | ||
2262 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2263 | return -EFAULT; | |
2264 | ||
b9e3bd77 DGM |
2265 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2266 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2267 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2268 | for (i = 0; i < 8; i++) { | |
2269 | qp = &info.proxydma_info_command_data[i]; | |
2270 | puqp = &ctx->csa.priv2.puq[i]; | |
2271 | ||
2272 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2273 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2274 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2275 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2276 | } | |
bf1ab978 DGM |
2277 | |
2278 | return simple_read_from_buffer(buf, len, pos, &info, | |
2279 | sizeof info); | |
2280 | } | |
2281 | ||
2282 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2283 | size_t len, loff_t *pos) | |
2284 | { | |
2285 | struct spu_context *ctx = file->private_data; | |
2286 | int ret; | |
2287 | ||
c9101bdb CH |
2288 | ret = spu_acquire_saved(ctx); |
2289 | if (ret) | |
2290 | return ret; | |
bf1ab978 DGM |
2291 | spin_lock(&ctx->csa.register_lock); |
2292 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2293 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2294 | spu_release_saved(ctx); |
b9e3bd77 | 2295 | |
b9e3bd77 DGM |
2296 | return ret; |
2297 | } | |
2298 | ||
5dfe4c96 | 2299 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2300 | .open = spufs_info_open, |
2301 | .read = spufs_proxydma_info_read, | |
2302 | }; | |
2303 | ||
476273ad CH |
2304 | static int spufs_show_tid(struct seq_file *s, void *private) |
2305 | { | |
2306 | struct spu_context *ctx = s->private; | |
2307 | ||
2308 | seq_printf(s, "%d\n", ctx->tid); | |
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2313 | { | |
2314 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2315 | } | |
2316 | ||
2317 | static const struct file_operations spufs_tid_fops = { | |
2318 | .open = spufs_tid_open, | |
2319 | .read = seq_read, | |
2320 | .llseek = seq_lseek, | |
2321 | .release = single_release, | |
2322 | }; | |
2323 | ||
e9f8a0b6 CH |
2324 | static const char *ctx_state_names[] = { |
2325 | "user", "system", "iowait", "loaded" | |
2326 | }; | |
2327 | ||
2328 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2329 | enum spu_utilization_state state) |
e9f8a0b6 | 2330 | { |
27ec41d3 AD |
2331 | struct timespec ts; |
2332 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2333 | |
27ec41d3 AD |
2334 | /* |
2335 | * In general, utilization statistics are updated by the controlling | |
2336 | * thread as the spu context moves through various well defined | |
2337 | * state transitions, but if the context is lazily loaded its | |
2338 | * utilization statistics are not updated as the controlling thread | |
2339 | * is not tightly coupled with the execution of the spu context. We | |
2340 | * calculate and apply the time delta from the last recorded state | |
2341 | * of the spu context. | |
2342 | */ | |
2343 | if (ctx->spu && ctx->stats.util_state == state) { | |
2344 | ktime_get_ts(&ts); | |
2345 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2346 | } | |
e9f8a0b6 | 2347 | |
27ec41d3 | 2348 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2349 | } |
2350 | ||
2351 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2352 | { | |
2353 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2354 | ||
2355 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2356 | slb_flts += (ctx->spu->stats.slb_flt - | |
2357 | ctx->stats.slb_flt_base); | |
2358 | } | |
2359 | ||
2360 | return slb_flts; | |
2361 | } | |
2362 | ||
2363 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2364 | { | |
2365 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2366 | ||
2367 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2368 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2369 | ctx->stats.class2_intr_base); | |
2370 | } | |
2371 | ||
2372 | return class2_intrs; | |
2373 | } | |
2374 | ||
2375 | ||
2376 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2377 | { | |
2378 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2379 | int ret; |
2380 | ||
2381 | ret = spu_acquire(ctx); | |
2382 | if (ret) | |
2383 | return ret; | |
e9f8a0b6 | 2384 | |
e9f8a0b6 CH |
2385 | seq_printf(s, "%s %llu %llu %llu %llu " |
2386 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2387 | ctx_state_names[ctx->stats.util_state], |
2388 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2389 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2390 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2391 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2392 | ctx->stats.vol_ctx_switch, |
2393 | ctx->stats.invol_ctx_switch, | |
2394 | spufs_slb_flts(ctx), | |
2395 | ctx->stats.hash_flt, | |
2396 | ctx->stats.min_flt, | |
2397 | ctx->stats.maj_flt, | |
2398 | spufs_class2_intrs(ctx), | |
2399 | ctx->stats.libassist); | |
2400 | spu_release(ctx); | |
2401 | return 0; | |
2402 | } | |
2403 | ||
2404 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2405 | { | |
2406 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2407 | } | |
2408 | ||
2409 | static const struct file_operations spufs_stat_fops = { | |
2410 | .open = spufs_stat_open, | |
2411 | .read = seq_read, | |
2412 | .llseek = seq_lseek, | |
2413 | .release = single_release, | |
2414 | }; | |
2415 | ||
5158e9b5 CH |
2416 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2417 | { | |
2418 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2419 | SWITCH_LOG_BUFSIZE; | |
2420 | } | |
2421 | ||
2422 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2423 | { | |
2424 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2425 | } | |
2426 | ||
2427 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2428 | { | |
2429 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2430 | int rc; |
2431 | ||
2432 | rc = spu_acquire(ctx); | |
2433 | if (rc) | |
2434 | return rc; | |
5158e9b5 | 2435 | |
5158e9b5 | 2436 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2437 | rc = -EBUSY; |
2438 | goto out; | |
5158e9b5 | 2439 | } |
f5ed0eb6 | 2440 | |
837ef884 | 2441 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2442 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2443 | GFP_KERNEL); | |
2444 | ||
2445 | if (!ctx->switch_log) { | |
2446 | rc = -ENOMEM; | |
2447 | goto out; | |
2448 | } | |
2449 | ||
837ef884 | 2450 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2451 | init_waitqueue_head(&ctx->switch_log->wait); |
2452 | rc = 0; | |
2453 | ||
2454 | out: | |
2455 | spu_release(ctx); | |
2456 | return rc; | |
2457 | } | |
2458 | ||
2459 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2460 | { | |
2461 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2462 | int rc; | |
2463 | ||
2464 | rc = spu_acquire(ctx); | |
2465 | if (rc) | |
2466 | return rc; | |
2467 | ||
2468 | kfree(ctx->switch_log); | |
2469 | ctx->switch_log = NULL; | |
2470 | spu_release(ctx); | |
5158e9b5 CH |
2471 | |
2472 | return 0; | |
5158e9b5 CH |
2473 | } |
2474 | ||
2475 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2476 | { | |
2477 | struct switch_log_entry *p; | |
2478 | ||
2479 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2480 | ||
2481 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2482 | (unsigned int) p->tstamp.tv_sec, | |
2483 | (unsigned int) p->tstamp.tv_nsec, | |
2484 | p->spu_id, | |
2485 | (unsigned int) p->type, | |
2486 | (unsigned int) p->val, | |
2487 | (unsigned long long) p->timebase); | |
2488 | } | |
2489 | ||
2490 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2491 | size_t len, loff_t *ppos) | |
2492 | { | |
2493 | struct inode *inode = file->f_path.dentry->d_inode; | |
2494 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2495 | int error = 0, cnt = 0; | |
2496 | ||
17e37675 | 2497 | if (!buf) |
5158e9b5 CH |
2498 | return -EINVAL; |
2499 | ||
f5ed0eb6 JK |
2500 | error = spu_acquire(ctx); |
2501 | if (error) | |
2502 | return error; | |
2503 | ||
5158e9b5 CH |
2504 | while (cnt < len) { |
2505 | char tbuf[128]; | |
2506 | int width; | |
2507 | ||
14f693ee JK |
2508 | if (spufs_switch_log_used(ctx) == 0) { |
2509 | if (cnt > 0) { | |
2510 | /* If there's data ready to go, we can | |
2511 | * just return straight away */ | |
2512 | break; | |
2513 | ||
2514 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2515 | error = -EAGAIN; |
2516 | break; | |
14f693ee JK |
2517 | |
2518 | } else { | |
2519 | /* spufs_wait will drop the mutex and | |
2520 | * re-acquire, but since we're in read(), the | |
2521 | * file cannot be _released (and so | |
2522 | * ctx->switch_log is stable). | |
2523 | */ | |
2524 | error = spufs_wait(ctx->switch_log->wait, | |
2525 | spufs_switch_log_used(ctx) > 0); | |
2526 | ||
2527 | /* On error, spufs_wait returns without the | |
2528 | * state mutex held */ | |
2529 | if (error) | |
2530 | return error; | |
2531 | ||
2532 | /* We may have had entries read from underneath | |
2533 | * us while we dropped the mutex in spufs_wait, | |
2534 | * so re-check */ | |
2535 | if (spufs_switch_log_used(ctx) == 0) | |
2536 | continue; | |
f5ed0eb6 | 2537 | } |
5158e9b5 CH |
2538 | } |
2539 | ||
5158e9b5 | 2540 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2541 | if (width < len) |
5158e9b5 CH |
2542 | ctx->switch_log->tail = |
2543 | (ctx->switch_log->tail + 1) % | |
2544 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2545 | else |
2546 | /* If the record is greater than space available return | |
2547 | * partial buffer (so far) */ | |
5158e9b5 CH |
2548 | break; |
2549 | ||
2550 | error = copy_to_user(buf + cnt, tbuf, width); | |
2551 | if (error) | |
2552 | break; | |
2553 | cnt += width; | |
2554 | } | |
2555 | ||
f5ed0eb6 JK |
2556 | spu_release(ctx); |
2557 | ||
5158e9b5 CH |
2558 | return cnt == 0 ? error : cnt; |
2559 | } | |
2560 | ||
2561 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2562 | { | |
2563 | struct inode *inode = file->f_path.dentry->d_inode; | |
2564 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2565 | unsigned int mask = 0; | |
f5ed0eb6 | 2566 | int rc; |
5158e9b5 CH |
2567 | |
2568 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2569 | ||
f5ed0eb6 JK |
2570 | rc = spu_acquire(ctx); |
2571 | if (rc) | |
2572 | return rc; | |
2573 | ||
5158e9b5 CH |
2574 | if (spufs_switch_log_used(ctx) > 0) |
2575 | mask |= POLLIN; | |
2576 | ||
f5ed0eb6 JK |
2577 | spu_release(ctx); |
2578 | ||
5158e9b5 CH |
2579 | return mask; |
2580 | } | |
2581 | ||
2582 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2583 | .owner = THIS_MODULE, |
2584 | .open = spufs_switch_log_open, | |
2585 | .read = spufs_switch_log_read, | |
2586 | .poll = spufs_switch_log_poll, | |
2587 | .release = spufs_switch_log_release, | |
5158e9b5 CH |
2588 | }; |
2589 | ||
f5ed0eb6 JK |
2590 | /** |
2591 | * Log a context switch event to a switch log reader. | |
2592 | * | |
2593 | * Must be called with ctx->state_mutex held. | |
2594 | */ | |
5158e9b5 CH |
2595 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2596 | u32 type, u32 val) | |
2597 | { | |
2598 | if (!ctx->switch_log) | |
2599 | return; | |
2600 | ||
5158e9b5 CH |
2601 | if (spufs_switch_log_avail(ctx) > 1) { |
2602 | struct switch_log_entry *p; | |
2603 | ||
2604 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2605 | ktime_get_ts(&p->tstamp); | |
2606 | p->timebase = get_tb(); | |
2607 | p->spu_id = spu ? spu->number : -1; | |
2608 | p->type = type; | |
2609 | p->val = val; | |
2610 | ||
2611 | ctx->switch_log->head = | |
2612 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2613 | } | |
5158e9b5 CH |
2614 | |
2615 | wake_up(&ctx->switch_log->wait); | |
2616 | } | |
e9f8a0b6 | 2617 | |
46deed69 LB |
2618 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2619 | { | |
2620 | struct spu_context *ctx = s->private; | |
2621 | u64 mfc_control_RW; | |
2622 | ||
2623 | mutex_lock(&ctx->state_mutex); | |
2624 | if (ctx->spu) { | |
2625 | struct spu *spu = ctx->spu; | |
2626 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2627 | ||
2628 | spin_lock_irq(&spu->register_lock); | |
2629 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2630 | spin_unlock_irq(&spu->register_lock); | |
2631 | } else { | |
2632 | struct spu_state *csa = &ctx->csa; | |
2633 | ||
2634 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2635 | } | |
2636 | ||
2637 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2638 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2639 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2640 | ctx->flags, | |
2641 | ctx->sched_flags, | |
2642 | ctx->prio, | |
2643 | ctx->time_slice, | |
2644 | ctx->spu ? ctx->spu->number : -1, | |
2645 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2646 | ctx->csa.class_0_pending, | |
2647 | ctx->csa.class_0_dar, | |
2648 | ctx->csa.class_1_dsisr, | |
2649 | mfc_control_RW, | |
2650 | ctx->ops->runcntl_read(ctx), | |
2651 | ctx->ops->status_read(ctx)); | |
2652 | ||
2653 | mutex_unlock(&ctx->state_mutex); | |
2654 | ||
2655 | return 0; | |
2656 | } | |
2657 | ||
2658 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2659 | { | |
2660 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2661 | } | |
2662 | ||
2663 | static const struct file_operations spufs_ctx_fops = { | |
2664 | .open = spufs_ctx_open, | |
2665 | .read = seq_read, | |
2666 | .llseek = seq_lseek, | |
2667 | .release = single_release, | |
2668 | }; | |
2669 | ||
74254647 | 2670 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2671 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2672 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2673 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2674 | { "mbox", &spufs_mbox_fops, 0444, }, |
2675 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2676 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2677 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2678 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2679 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2680 | { "signal1", &spufs_signal1_fops, 0666, }, |
2681 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2682 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2683 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2684 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2685 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2686 | { "lslr", &spufs_lslr_ops, 0444, }, |
2687 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2688 | { "mss", &spufs_mss_fops, 0666, }, | |
2689 | { "npc", &spufs_npc_ops, 0666, }, | |
2690 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2691 | { "decr", &spufs_decr_ops, 0666, }, |
2692 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2693 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2694 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2695 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2696 | { "phys-id", &spufs_id_ops, 0666, }, |
2697 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2698 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2699 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2700 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2701 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2702 | sizeof(struct spu_dma_info), }, | |
2703 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2704 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2705 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2706 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2707 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2708 | {}, |
2709 | }; | |
5737edd1 | 2710 | |
74254647 | 2711 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2712 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2713 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2714 | { "mbox", &spufs_mbox_fops, 0444, }, |
2715 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2716 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2717 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2718 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2719 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2720 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2721 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2722 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2723 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2724 | { "mss", &spufs_mss_fops, 0666, }, | |
2725 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2726 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2727 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2728 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2729 | { "phys-id", &spufs_id_ops, 0666, }, |
2730 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2731 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2732 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2733 | {}, |
2734 | }; | |
2735 | ||
74254647 | 2736 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2737 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2738 | {}, |
2739 | }; | |
bf1ab978 | 2740 | |
74254647 | 2741 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2742 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2743 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2744 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2745 | { "decr", NULL, spufs_decr_get, 19 }, | |
2746 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2747 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2748 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2749 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2750 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2751 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2752 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2753 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2754 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2755 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2756 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2757 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2758 | { "proxydma_info", __spufs_proxydma_info_read, | |
2759 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2760 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2761 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2762 | { NULL }, |
bf1ab978 | 2763 | }; |