Commit | Line | Data |
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67207b96 AB |
1 | /* |
2 | * SPU file system -- file contents | |
3 | * | |
4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
5 | * | |
6 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
a33a7d73 AB |
23 | #undef DEBUG |
24 | ||
67207b96 AB |
25 | #include <linux/fs.h> |
26 | #include <linux/ioctl.h> | |
4b16f8e2 | 27 | #include <linux/export.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, \ | |
fc15351d | 157 | .llseek = generic_file_llseek, \ |
197b1a82 CH |
158 | }; |
159 | ||
cbe709c1 | 160 | |
67207b96 AB |
161 | static int |
162 | spufs_mem_open(struct inode *inode, struct file *file) | |
163 | { | |
164 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 165 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 166 | |
47d3a5fa | 167 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 168 | file->private_data = ctx; |
43c2bbd9 CH |
169 | if (!i->i_openers++) |
170 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 171 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
172 | return 0; |
173 | } | |
174 | ||
175 | static int | |
176 | spufs_mem_release(struct inode *inode, struct file *file) | |
177 | { | |
178 | struct spufs_inode_info *i = SPUFS_I(inode); | |
179 | struct spu_context *ctx = i->i_ctx; | |
180 | ||
47d3a5fa | 181 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
182 | if (!--i->i_openers) |
183 | ctx->local_store = NULL; | |
47d3a5fa | 184 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
185 | return 0; |
186 | } | |
187 | ||
bf1ab978 DGM |
188 | static ssize_t |
189 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
190 | size_t size, loff_t *pos) | |
191 | { | |
192 | char *local_store = ctx->ops->get_ls(ctx); | |
193 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
194 | LS_SIZE); | |
195 | } | |
196 | ||
67207b96 AB |
197 | static ssize_t |
198 | spufs_mem_read(struct file *file, char __user *buffer, | |
199 | size_t size, loff_t *pos) | |
200 | { | |
bf1ab978 | 201 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 202 | ssize_t ret; |
67207b96 | 203 | |
c9101bdb CH |
204 | ret = spu_acquire(ctx); |
205 | if (ret) | |
206 | return ret; | |
bf1ab978 | 207 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 208 | spu_release(ctx); |
c9101bdb | 209 | |
67207b96 AB |
210 | return ret; |
211 | } | |
212 | ||
213 | static ssize_t | |
214 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 215 | size_t size, loff_t *ppos) |
67207b96 AB |
216 | { |
217 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 218 | char *local_store; |
aa0ed2bd | 219 | loff_t pos = *ppos; |
8b3d6663 | 220 | int ret; |
67207b96 | 221 | |
aa0ed2bd | 222 | if (pos > LS_SIZE) |
67207b96 | 223 | return -EFBIG; |
8b3d6663 | 224 | |
c9101bdb CH |
225 | ret = spu_acquire(ctx); |
226 | if (ret) | |
227 | return ret; | |
228 | ||
8b3d6663 | 229 | local_store = ctx->ops->get_ls(ctx); |
63c3b9d7 | 230 | size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); |
8b3d6663 | 231 | spu_release(ctx); |
aa0ed2bd | 232 | |
aa0ed2bd | 233 | return size; |
67207b96 AB |
234 | } |
235 | ||
b1e2270f NP |
236 | static int |
237 | spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
8b3d6663 | 238 | { |
f1fa74f4 | 239 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f NP |
240 | unsigned long address = (unsigned long)vmf->virtual_address; |
241 | unsigned long pfn, offset; | |
242 | ||
f1fa74f4 BH |
243 | #ifdef CONFIG_SPU_FS_64K_LS |
244 | struct spu_state *csa = &ctx->csa; | |
245 | int psize; | |
246 | ||
247 | /* Check what page size we are using */ | |
248 | psize = get_slice_psize(vma->vm_mm, address); | |
249 | ||
250 | /* Some sanity checking */ | |
251 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); | |
252 | ||
253 | /* Wow, 64K, cool, we need to align the address though */ | |
254 | if (csa->use_big_pages) { | |
255 | BUG_ON(vma->vm_start & 0xffff); | |
256 | address &= ~0xfffful; | |
257 | } | |
258 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
8b3d6663 | 259 | |
b1e2270f | 260 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 261 | if (offset >= LS_SIZE) |
b1e2270f | 262 | return VM_FAULT_SIGBUS; |
128b8546 | 263 | |
b1e2270f NP |
264 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
265 | address, offset); | |
f1fa74f4 | 266 | |
c9101bdb | 267 | if (spu_acquire(ctx)) |
b1e2270f | 268 | return VM_FAULT_NOPAGE; |
8b3d6663 | 269 | |
ac91cb8d | 270 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 271 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 272 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 273 | } else { |
64b3d0e8 | 274 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 275 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 276 | } |
78bde53e | 277 | vm_insert_pfn(vma, address, pfn); |
8b3d6663 | 278 | |
78bde53e | 279 | spu_release(ctx); |
8b3d6663 | 280 | |
b1e2270f | 281 | return VM_FAULT_NOPAGE; |
8b3d6663 AB |
282 | } |
283 | ||
a352894d BH |
284 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
285 | unsigned long address, | |
286 | void *buf, int len, int write) | |
287 | { | |
288 | struct spu_context *ctx = vma->vm_file->private_data; | |
289 | unsigned long offset = address - vma->vm_start; | |
290 | char *local_store; | |
291 | ||
292 | if (write && !(vma->vm_flags & VM_WRITE)) | |
293 | return -EACCES; | |
294 | if (spu_acquire(ctx)) | |
295 | return -EINTR; | |
296 | if ((offset + len) > vma->vm_end) | |
297 | len = vma->vm_end - offset; | |
298 | local_store = ctx->ops->get_ls(ctx); | |
299 | if (write) | |
300 | memcpy_toio(local_store + offset, buf, len); | |
301 | else | |
302 | memcpy_fromio(buf, local_store + offset, len); | |
303 | spu_release(ctx); | |
304 | return len; | |
305 | } | |
78bde53e | 306 | |
f0f37e2f | 307 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 308 | .fault = spufs_mem_mmap_fault, |
a352894d | 309 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
310 | }; |
311 | ||
f1fa74f4 | 312 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 313 | { |
f1fa74f4 BH |
314 | #ifdef CONFIG_SPU_FS_64K_LS |
315 | struct spu_context *ctx = file->private_data; | |
316 | struct spu_state *csa = &ctx->csa; | |
317 | ||
318 | /* Sanity check VMA alignment */ | |
319 | if (csa->use_big_pages) { | |
320 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," | |
321 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, | |
322 | vma->vm_pgoff); | |
323 | if (vma->vm_start & 0xffff) | |
324 | return -EINVAL; | |
325 | if (vma->vm_pgoff & 0xf) | |
326 | return -EINVAL; | |
327 | } | |
328 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
329 | ||
8b3d6663 AB |
330 | if (!(vma->vm_flags & VM_SHARED)) |
331 | return -EINVAL; | |
67207b96 | 332 | |
78bde53e | 333 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 334 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
335 | |
336 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
337 | return 0; |
338 | } | |
339 | ||
f1fa74f4 | 340 | #ifdef CONFIG_SPU_FS_64K_LS |
1238819a SS |
341 | static unsigned long spufs_get_unmapped_area(struct file *file, |
342 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
343 | unsigned long flags) | |
f1fa74f4 BH |
344 | { |
345 | struct spu_context *ctx = file->private_data; | |
346 | struct spu_state *csa = &ctx->csa; | |
347 | ||
348 | /* If not using big pages, fallback to normal MM g_u_a */ | |
349 | if (!csa->use_big_pages) | |
350 | return current->mm->get_unmapped_area(file, addr, len, | |
351 | pgoff, flags); | |
352 | ||
353 | /* Else, try to obtain a 64K pages slice */ | |
354 | return slice_get_unmapped_area(addr, len, flags, | |
355 | MMU_PAGE_64K, 1, 0); | |
356 | } | |
357 | #endif /* CONFIG_SPU_FS_64K_LS */ | |
358 | ||
5dfe4c96 | 359 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
360 | .open = spufs_mem_open, |
361 | .release = spufs_mem_release, | |
362 | .read = spufs_mem_read, | |
363 | .write = spufs_mem_write, | |
364 | .llseek = generic_file_llseek, | |
365 | .mmap = spufs_mem_mmap, | |
f1fa74f4 BH |
366 | #ifdef CONFIG_SPU_FS_64K_LS |
367 | .get_unmapped_area = spufs_get_unmapped_area, | |
368 | #endif | |
8b3d6663 AB |
369 | }; |
370 | ||
b1e2270f NP |
371 | static int spufs_ps_fault(struct vm_area_struct *vma, |
372 | struct vm_fault *vmf, | |
78bde53e | 373 | unsigned long ps_offs, |
27d5bf2a | 374 | unsigned long ps_size) |
6df10a82 | 375 | { |
6df10a82 | 376 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 377 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
eebead5b | 378 | int ret = 0; |
6df10a82 | 379 | |
b1e2270f | 380 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 381 | |
27d5bf2a | 382 | if (offset >= ps_size) |
b1e2270f | 383 | return VM_FAULT_SIGBUS; |
6df10a82 | 384 | |
60657263 JK |
385 | if (fatal_signal_pending(current)) |
386 | return VM_FAULT_SIGBUS; | |
387 | ||
d5883137 JK |
388 | /* |
389 | * Because we release the mmap_sem, the context may be destroyed while | |
390 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
391 | * in the meantime. | |
392 | */ | |
393 | get_spu_context(ctx); | |
394 | ||
33bfd7a7 AB |
395 | /* |
396 | * We have to wait for context to be loaded before we have | |
397 | * pages to hand out to the user, but we don't want to wait | |
398 | * with the mmap_sem held. | |
399 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 400 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 401 | * hanged. |
78bde53e | 402 | */ |
c9101bdb | 403 | if (spu_acquire(ctx)) |
d5883137 | 404 | goto refault; |
c9101bdb | 405 | |
33bfd7a7 AB |
406 | if (ctx->state == SPU_STATE_SAVED) { |
407 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 408 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
eebead5b | 409 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 410 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 411 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
412 | } else { |
413 | area = ctx->spu->problem_phys + ps_offs; | |
b1e2270f NP |
414 | vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, |
415 | (area + offset) >> PAGE_SHIFT); | |
416 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); | |
33bfd7a7 | 417 | } |
6df10a82 | 418 | |
eebead5b CH |
419 | if (!ret) |
420 | spu_release(ctx); | |
d5883137 JK |
421 | |
422 | refault: | |
423 | put_spu_context(ctx); | |
b1e2270f | 424 | return VM_FAULT_NOPAGE; |
6df10a82 MN |
425 | } |
426 | ||
27d5bf2a | 427 | #if SPUFS_MMAP_4K |
b1e2270f NP |
428 | static int spufs_cntl_mmap_fault(struct vm_area_struct *vma, |
429 | struct vm_fault *vmf) | |
6df10a82 | 430 | { |
87ff6090 | 431 | return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
432 | } |
433 | ||
f0f37e2f | 434 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 435 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
436 | }; |
437 | ||
438 | /* | |
439 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
440 | */ |
441 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
442 | { | |
443 | if (!(vma->vm_flags & VM_SHARED)) | |
444 | return -EINVAL; | |
445 | ||
78bde53e | 446 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 447 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
448 | |
449 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
450 | return 0; | |
451 | } | |
27d5bf2a BH |
452 | #else /* SPUFS_MMAP_4K */ |
453 | #define spufs_cntl_mmap NULL | |
454 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 455 | |
197b1a82 | 456 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 457 | { |
e1dbff2b | 458 | struct spu_context *ctx = data; |
c9101bdb | 459 | int ret; |
6df10a82 | 460 | |
c9101bdb CH |
461 | ret = spu_acquire(ctx); |
462 | if (ret) | |
463 | return ret; | |
197b1a82 | 464 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
465 | spu_release(ctx); |
466 | ||
197b1a82 | 467 | return 0; |
6df10a82 MN |
468 | } |
469 | ||
197b1a82 | 470 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 471 | { |
e1dbff2b | 472 | struct spu_context *ctx = data; |
c9101bdb | 473 | int ret; |
e1dbff2b | 474 | |
c9101bdb CH |
475 | ret = spu_acquire(ctx); |
476 | if (ret) | |
477 | return ret; | |
e1dbff2b AB |
478 | ctx->ops->runcntl_write(ctx, val); |
479 | spu_release(ctx); | |
197b1a82 CH |
480 | |
481 | return 0; | |
6df10a82 MN |
482 | } |
483 | ||
e1dbff2b | 484 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 485 | { |
e1dbff2b AB |
486 | struct spufs_inode_info *i = SPUFS_I(inode); |
487 | struct spu_context *ctx = i->i_ctx; | |
488 | ||
47d3a5fa | 489 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 490 | file->private_data = ctx; |
43c2bbd9 CH |
491 | if (!i->i_openers++) |
492 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 493 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 494 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 495 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
496 | } |
497 | ||
43c2bbd9 CH |
498 | static int |
499 | spufs_cntl_release(struct inode *inode, struct file *file) | |
500 | { | |
501 | struct spufs_inode_info *i = SPUFS_I(inode); | |
502 | struct spu_context *ctx = i->i_ctx; | |
503 | ||
74bedc4d | 504 | simple_attr_release(inode, file); |
43c2bbd9 | 505 | |
47d3a5fa | 506 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
507 | if (!--i->i_openers) |
508 | ctx->cntl = NULL; | |
47d3a5fa | 509 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
510 | return 0; |
511 | } | |
512 | ||
5dfe4c96 | 513 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 514 | .open = spufs_cntl_open, |
43c2bbd9 | 515 | .release = spufs_cntl_release, |
8b88b099 CH |
516 | .read = simple_attr_read, |
517 | .write = simple_attr_write, | |
fc15351d | 518 | .llseek = generic_file_llseek, |
6df10a82 | 519 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
520 | }; |
521 | ||
8b3d6663 AB |
522 | static int |
523 | spufs_regs_open(struct inode *inode, struct file *file) | |
524 | { | |
525 | struct spufs_inode_info *i = SPUFS_I(inode); | |
526 | file->private_data = i->i_ctx; | |
527 | return 0; | |
528 | } | |
529 | ||
bf1ab978 DGM |
530 | static ssize_t |
531 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
532 | size_t size, loff_t *pos) | |
533 | { | |
534 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
535 | return simple_read_from_buffer(buffer, size, pos, | |
536 | lscsa->gprs, sizeof lscsa->gprs); | |
537 | } | |
538 | ||
8b3d6663 AB |
539 | static ssize_t |
540 | spufs_regs_read(struct file *file, char __user *buffer, | |
541 | size_t size, loff_t *pos) | |
542 | { | |
8b3d6663 | 543 | int ret; |
bf1ab978 | 544 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 545 | |
f027faa2 JK |
546 | /* pre-check for file position: if we'd return EOF, there's no point |
547 | * causing a deschedule */ | |
548 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
549 | return 0; | |
550 | ||
c9101bdb CH |
551 | ret = spu_acquire_saved(ctx); |
552 | if (ret) | |
553 | return ret; | |
bf1ab978 | 554 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 555 | spu_release_saved(ctx); |
8b3d6663 AB |
556 | return ret; |
557 | } | |
558 | ||
559 | static ssize_t | |
560 | spufs_regs_write(struct file *file, const char __user *buffer, | |
561 | size_t size, loff_t *pos) | |
562 | { | |
563 | struct spu_context *ctx = file->private_data; | |
564 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
565 | int ret; | |
566 | ||
d219889b | 567 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 568 | return -EFBIG; |
d219889b | 569 | |
c9101bdb CH |
570 | ret = spu_acquire_saved(ctx); |
571 | if (ret) | |
572 | return ret; | |
8b3d6663 | 573 | |
63c3b9d7 AM |
574 | size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, |
575 | buffer, size); | |
8b3d6663 | 576 | |
27b1ea09 | 577 | spu_release_saved(ctx); |
63c3b9d7 | 578 | return size; |
8b3d6663 AB |
579 | } |
580 | ||
5dfe4c96 | 581 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
582 | .open = spufs_regs_open, |
583 | .read = spufs_regs_read, | |
584 | .write = spufs_regs_write, | |
67207b96 AB |
585 | .llseek = generic_file_llseek, |
586 | }; | |
587 | ||
bf1ab978 DGM |
588 | static ssize_t |
589 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
590 | size_t size, loff_t * pos) | |
591 | { | |
592 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
593 | return simple_read_from_buffer(buffer, size, pos, | |
594 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
595 | } | |
596 | ||
8b3d6663 AB |
597 | static ssize_t |
598 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
599 | size_t size, loff_t * pos) | |
600 | { | |
8b3d6663 | 601 | int ret; |
bf1ab978 | 602 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 603 | |
c9101bdb CH |
604 | ret = spu_acquire_saved(ctx); |
605 | if (ret) | |
606 | return ret; | |
bf1ab978 | 607 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 608 | spu_release_saved(ctx); |
8b3d6663 AB |
609 | return ret; |
610 | } | |
611 | ||
612 | static ssize_t | |
613 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
614 | size_t size, loff_t * pos) | |
615 | { | |
616 | struct spu_context *ctx = file->private_data; | |
617 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
618 | int ret; | |
619 | ||
d219889b | 620 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 621 | return -EFBIG; |
8b3d6663 | 622 | |
c9101bdb CH |
623 | ret = spu_acquire_saved(ctx); |
624 | if (ret) | |
625 | return ret; | |
8b3d6663 | 626 | |
63c3b9d7 AM |
627 | size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, |
628 | buffer, size); | |
8b3d6663 | 629 | |
27b1ea09 | 630 | spu_release_saved(ctx); |
63c3b9d7 | 631 | return size; |
8b3d6663 AB |
632 | } |
633 | ||
5dfe4c96 | 634 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
635 | .open = spufs_regs_open, |
636 | .read = spufs_fpcr_read, | |
637 | .write = spufs_fpcr_write, | |
638 | .llseek = generic_file_llseek, | |
639 | }; | |
640 | ||
67207b96 AB |
641 | /* generic open function for all pipe-like files */ |
642 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
643 | { | |
644 | struct spufs_inode_info *i = SPUFS_I(inode); | |
645 | file->private_data = i->i_ctx; | |
646 | ||
647 | return nonseekable_open(inode, file); | |
648 | } | |
649 | ||
cdcc89bb AB |
650 | /* |
651 | * Read as many bytes from the mailbox as possible, until | |
652 | * one of the conditions becomes true: | |
653 | * | |
654 | * - no more data available in the mailbox | |
655 | * - end of the user provided buffer | |
656 | * - end of the mapped area | |
657 | */ | |
67207b96 AB |
658 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
659 | size_t len, loff_t *pos) | |
660 | { | |
8b3d6663 | 661 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
662 | u32 mbox_data, __user *udata; |
663 | ssize_t count; | |
67207b96 AB |
664 | |
665 | if (len < 4) | |
666 | return -EINVAL; | |
667 | ||
cdcc89bb AB |
668 | if (!access_ok(VERIFY_WRITE, buf, len)) |
669 | return -EFAULT; | |
670 | ||
671 | udata = (void __user *)buf; | |
672 | ||
c9101bdb CH |
673 | count = spu_acquire(ctx); |
674 | if (count) | |
675 | return count; | |
676 | ||
274cef5e | 677 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
678 | int ret; |
679 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
680 | if (ret == 0) | |
681 | break; | |
682 | ||
683 | /* | |
684 | * at the end of the mapped area, we can fault | |
685 | * but still need to return the data we have | |
686 | * read successfully so far. | |
687 | */ | |
688 | ret = __put_user(mbox_data, udata); | |
689 | if (ret) { | |
690 | if (!count) | |
691 | count = -EFAULT; | |
692 | break; | |
693 | } | |
694 | } | |
8b3d6663 | 695 | spu_release(ctx); |
67207b96 | 696 | |
cdcc89bb AB |
697 | if (!count) |
698 | count = -EAGAIN; | |
67207b96 | 699 | |
cdcc89bb | 700 | return count; |
67207b96 AB |
701 | } |
702 | ||
5dfe4c96 | 703 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
704 | .open = spufs_pipe_open, |
705 | .read = spufs_mbox_read, | |
fc15351d | 706 | .llseek = no_llseek, |
67207b96 AB |
707 | }; |
708 | ||
709 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
710 | size_t len, loff_t *pos) | |
711 | { | |
8b3d6663 | 712 | struct spu_context *ctx = file->private_data; |
c9101bdb | 713 | ssize_t ret; |
67207b96 AB |
714 | u32 mbox_stat; |
715 | ||
716 | if (len < 4) | |
717 | return -EINVAL; | |
718 | ||
c9101bdb CH |
719 | ret = spu_acquire(ctx); |
720 | if (ret) | |
721 | return ret; | |
8b3d6663 AB |
722 | |
723 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
724 | ||
725 | spu_release(ctx); | |
67207b96 AB |
726 | |
727 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
728 | return -EFAULT; | |
729 | ||
730 | return 4; | |
731 | } | |
732 | ||
5dfe4c96 | 733 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
734 | .open = spufs_pipe_open, |
735 | .read = spufs_mbox_stat_read, | |
fc15351d | 736 | .llseek = no_llseek, |
67207b96 AB |
737 | }; |
738 | ||
739 | /* low-level ibox access function */ | |
8b3d6663 | 740 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 741 | { |
8b3d6663 AB |
742 | return ctx->ops->ibox_read(ctx, data); |
743 | } | |
67207b96 | 744 | |
8b3d6663 AB |
745 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
746 | { | |
747 | struct spu_context *ctx = file->private_data; | |
67207b96 | 748 | |
8b3d6663 | 749 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
67207b96 | 750 | } |
67207b96 | 751 | |
8b3d6663 AB |
752 | /* interrupt-level ibox callback function. */ |
753 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 754 | { |
8b3d6663 AB |
755 | struct spu_context *ctx = spu->ctx; |
756 | ||
e65c2f6f LB |
757 | if (!ctx) |
758 | return; | |
759 | ||
8b3d6663 AB |
760 | wake_up_all(&ctx->ibox_wq); |
761 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); | |
67207b96 AB |
762 | } |
763 | ||
cdcc89bb AB |
764 | /* |
765 | * Read as many bytes from the interrupt mailbox as possible, until | |
766 | * one of the conditions becomes true: | |
767 | * | |
768 | * - no more data available in the mailbox | |
769 | * - end of the user provided buffer | |
770 | * - end of the mapped area | |
771 | * | |
772 | * If the file is opened without O_NONBLOCK, we wait here until | |
773 | * any data is available, but return when we have been able to | |
774 | * read something. | |
775 | */ | |
67207b96 AB |
776 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
777 | size_t len, loff_t *pos) | |
778 | { | |
8b3d6663 | 779 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
780 | u32 ibox_data, __user *udata; |
781 | ssize_t count; | |
67207b96 AB |
782 | |
783 | if (len < 4) | |
784 | return -EINVAL; | |
785 | ||
cdcc89bb AB |
786 | if (!access_ok(VERIFY_WRITE, buf, len)) |
787 | return -EFAULT; | |
788 | ||
789 | udata = (void __user *)buf; | |
790 | ||
c9101bdb CH |
791 | count = spu_acquire(ctx); |
792 | if (count) | |
eebead5b | 793 | goto out; |
67207b96 | 794 | |
cdcc89bb AB |
795 | /* wait only for the first element */ |
796 | count = 0; | |
67207b96 | 797 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 798 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 799 | count = -EAGAIN; |
eebead5b CH |
800 | goto out_unlock; |
801 | } | |
67207b96 | 802 | } else { |
cdcc89bb | 803 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
804 | if (count) |
805 | goto out; | |
67207b96 AB |
806 | } |
807 | ||
cdcc89bb AB |
808 | /* if we can't write at all, return -EFAULT */ |
809 | count = __put_user(ibox_data, udata); | |
810 | if (count) | |
eebead5b | 811 | goto out_unlock; |
8b3d6663 | 812 | |
cdcc89bb AB |
813 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
814 | int ret; | |
815 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
816 | if (ret == 0) | |
817 | break; | |
818 | /* | |
819 | * at the end of the mapped area, we can fault | |
820 | * but still need to return the data we have | |
821 | * read successfully so far. | |
822 | */ | |
823 | ret = __put_user(ibox_data, udata); | |
824 | if (ret) | |
825 | break; | |
826 | } | |
67207b96 | 827 | |
eebead5b | 828 | out_unlock: |
cdcc89bb | 829 | spu_release(ctx); |
eebead5b | 830 | out: |
cdcc89bb | 831 | return count; |
67207b96 AB |
832 | } |
833 | ||
834 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) | |
835 | { | |
8b3d6663 | 836 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
837 | unsigned int mask; |
838 | ||
8b3d6663 | 839 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 840 | |
c9101bdb CH |
841 | /* |
842 | * For now keep this uninterruptible and also ignore the rule | |
843 | * that poll should not sleep. Will be fixed later. | |
844 | */ | |
845 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
846 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
847 | spu_release(ctx); | |
67207b96 AB |
848 | |
849 | return mask; | |
850 | } | |
851 | ||
5dfe4c96 | 852 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
853 | .open = spufs_pipe_open, |
854 | .read = spufs_ibox_read, | |
855 | .poll = spufs_ibox_poll, | |
856 | .fasync = spufs_ibox_fasync, | |
fc15351d | 857 | .llseek = no_llseek, |
67207b96 AB |
858 | }; |
859 | ||
860 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
861 | size_t len, loff_t *pos) | |
862 | { | |
8b3d6663 | 863 | struct spu_context *ctx = file->private_data; |
c9101bdb | 864 | ssize_t ret; |
67207b96 AB |
865 | u32 ibox_stat; |
866 | ||
867 | if (len < 4) | |
868 | return -EINVAL; | |
869 | ||
c9101bdb CH |
870 | ret = spu_acquire(ctx); |
871 | if (ret) | |
872 | return ret; | |
8b3d6663 AB |
873 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
874 | spu_release(ctx); | |
67207b96 AB |
875 | |
876 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
877 | return -EFAULT; | |
878 | ||
879 | return 4; | |
880 | } | |
881 | ||
5dfe4c96 | 882 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
883 | .open = spufs_pipe_open, |
884 | .read = spufs_ibox_stat_read, | |
fc15351d | 885 | .llseek = no_llseek, |
67207b96 AB |
886 | }; |
887 | ||
888 | /* low-level mailbox write */ | |
8b3d6663 | 889 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 890 | { |
8b3d6663 AB |
891 | return ctx->ops->wbox_write(ctx, data); |
892 | } | |
67207b96 | 893 | |
8b3d6663 AB |
894 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
895 | { | |
896 | struct spu_context *ctx = file->private_data; | |
897 | int ret; | |
67207b96 | 898 | |
8b3d6663 | 899 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
67207b96 | 900 | |
67207b96 AB |
901 | return ret; |
902 | } | |
67207b96 | 903 | |
8b3d6663 AB |
904 | /* interrupt-level wbox callback function. */ |
905 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 906 | { |
8b3d6663 AB |
907 | struct spu_context *ctx = spu->ctx; |
908 | ||
e65c2f6f LB |
909 | if (!ctx) |
910 | return; | |
911 | ||
8b3d6663 AB |
912 | wake_up_all(&ctx->wbox_wq); |
913 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); | |
67207b96 AB |
914 | } |
915 | ||
cdcc89bb AB |
916 | /* |
917 | * Write as many bytes to the interrupt mailbox as possible, until | |
918 | * one of the conditions becomes true: | |
919 | * | |
920 | * - the mailbox is full | |
921 | * - end of the user provided buffer | |
922 | * - end of the mapped area | |
923 | * | |
924 | * If the file is opened without O_NONBLOCK, we wait here until | |
925 | * space is availabyl, but return when we have been able to | |
926 | * write something. | |
927 | */ | |
67207b96 AB |
928 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
929 | size_t len, loff_t *pos) | |
930 | { | |
8b3d6663 | 931 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
932 | u32 wbox_data, __user *udata; |
933 | ssize_t count; | |
67207b96 AB |
934 | |
935 | if (len < 4) | |
936 | return -EINVAL; | |
937 | ||
cdcc89bb AB |
938 | udata = (void __user *)buf; |
939 | if (!access_ok(VERIFY_READ, buf, len)) | |
940 | return -EFAULT; | |
941 | ||
942 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
943 | return -EFAULT; |
944 | ||
c9101bdb CH |
945 | count = spu_acquire(ctx); |
946 | if (count) | |
eebead5b | 947 | goto out; |
8b3d6663 | 948 | |
cdcc89bb AB |
949 | /* |
950 | * make sure we can at least write one element, by waiting | |
951 | * in case of !O_NONBLOCK | |
952 | */ | |
953 | count = 0; | |
67207b96 | 954 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 955 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 956 | count = -EAGAIN; |
eebead5b CH |
957 | goto out_unlock; |
958 | } | |
67207b96 | 959 | } else { |
cdcc89bb | 960 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
961 | if (count) |
962 | goto out; | |
67207b96 AB |
963 | } |
964 | ||
8b3d6663 | 965 | |
96de0e25 | 966 | /* write as much as possible */ |
cdcc89bb AB |
967 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
968 | int ret; | |
969 | ret = __get_user(wbox_data, udata); | |
970 | if (ret) | |
971 | break; | |
972 | ||
973 | ret = spu_wbox_write(ctx, wbox_data); | |
974 | if (ret == 0) | |
975 | break; | |
976 | } | |
977 | ||
eebead5b | 978 | out_unlock: |
cdcc89bb | 979 | spu_release(ctx); |
eebead5b | 980 | out: |
cdcc89bb | 981 | return count; |
67207b96 AB |
982 | } |
983 | ||
984 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) | |
985 | { | |
8b3d6663 | 986 | struct spu_context *ctx = file->private_data; |
67207b96 AB |
987 | unsigned int mask; |
988 | ||
8b3d6663 | 989 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 990 | |
c9101bdb CH |
991 | /* |
992 | * For now keep this uninterruptible and also ignore the rule | |
993 | * that poll should not sleep. Will be fixed later. | |
994 | */ | |
995 | mutex_lock(&ctx->state_mutex); | |
3a843d7c AB |
996 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
997 | spu_release(ctx); | |
67207b96 AB |
998 | |
999 | return mask; | |
1000 | } | |
1001 | ||
5dfe4c96 | 1002 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
1003 | .open = spufs_pipe_open, |
1004 | .write = spufs_wbox_write, | |
1005 | .poll = spufs_wbox_poll, | |
1006 | .fasync = spufs_wbox_fasync, | |
fc15351d | 1007 | .llseek = no_llseek, |
67207b96 AB |
1008 | }; |
1009 | ||
1010 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
1011 | size_t len, loff_t *pos) | |
1012 | { | |
8b3d6663 | 1013 | struct spu_context *ctx = file->private_data; |
c9101bdb | 1014 | ssize_t ret; |
67207b96 AB |
1015 | u32 wbox_stat; |
1016 | ||
1017 | if (len < 4) | |
1018 | return -EINVAL; | |
1019 | ||
c9101bdb CH |
1020 | ret = spu_acquire(ctx); |
1021 | if (ret) | |
1022 | return ret; | |
8b3d6663 AB |
1023 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
1024 | spu_release(ctx); | |
67207b96 AB |
1025 | |
1026 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
1027 | return -EFAULT; | |
1028 | ||
1029 | return 4; | |
1030 | } | |
1031 | ||
5dfe4c96 | 1032 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
1033 | .open = spufs_pipe_open, |
1034 | .read = spufs_wbox_stat_read, | |
fc15351d | 1035 | .llseek = no_llseek, |
67207b96 AB |
1036 | }; |
1037 | ||
6df10a82 MN |
1038 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
1039 | { | |
1040 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1041 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1042 | |
47d3a5fa | 1043 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1044 | file->private_data = ctx; |
43c2bbd9 CH |
1045 | if (!i->i_openers++) |
1046 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 1047 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1048 | return nonseekable_open(inode, file); |
1049 | } | |
1050 | ||
43c2bbd9 CH |
1051 | static int |
1052 | spufs_signal1_release(struct inode *inode, struct file *file) | |
1053 | { | |
1054 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1055 | struct spu_context *ctx = i->i_ctx; | |
1056 | ||
47d3a5fa | 1057 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1058 | if (!--i->i_openers) |
1059 | ctx->signal1 = NULL; | |
47d3a5fa | 1060 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1061 | return 0; |
1062 | } | |
1063 | ||
bf1ab978 | 1064 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1065 | size_t len, loff_t *pos) |
1066 | { | |
17f88ceb | 1067 | int ret = 0; |
67207b96 AB |
1068 | u32 data; |
1069 | ||
67207b96 AB |
1070 | if (len < 4) |
1071 | return -EINVAL; | |
1072 | ||
17f88ceb DGM |
1073 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
1074 | data = ctx->csa.spu_chnldata_RW[3]; | |
1075 | ret = 4; | |
1076 | } | |
8b3d6663 | 1077 | |
17f88ceb DGM |
1078 | if (!ret) |
1079 | goto out; | |
1080 | ||
67207b96 AB |
1081 | if (copy_to_user(buf, &data, 4)) |
1082 | return -EFAULT; | |
1083 | ||
17f88ceb DGM |
1084 | out: |
1085 | return ret; | |
67207b96 AB |
1086 | } |
1087 | ||
bf1ab978 DGM |
1088 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
1089 | size_t len, loff_t *pos) | |
1090 | { | |
1091 | int ret; | |
1092 | struct spu_context *ctx = file->private_data; | |
1093 | ||
c9101bdb CH |
1094 | ret = spu_acquire_saved(ctx); |
1095 | if (ret) | |
1096 | return ret; | |
bf1ab978 | 1097 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1098 | spu_release_saved(ctx); |
bf1ab978 DGM |
1099 | |
1100 | return ret; | |
1101 | } | |
1102 | ||
67207b96 AB |
1103 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1104 | size_t len, loff_t *pos) | |
1105 | { | |
1106 | struct spu_context *ctx; | |
c9101bdb | 1107 | ssize_t ret; |
67207b96 AB |
1108 | u32 data; |
1109 | ||
1110 | ctx = file->private_data; | |
67207b96 AB |
1111 | |
1112 | if (len < 4) | |
1113 | return -EINVAL; | |
1114 | ||
1115 | if (copy_from_user(&data, buf, 4)) | |
1116 | return -EFAULT; | |
1117 | ||
c9101bdb CH |
1118 | ret = spu_acquire(ctx); |
1119 | if (ret) | |
1120 | return ret; | |
8b3d6663 AB |
1121 | ctx->ops->signal1_write(ctx, data); |
1122 | spu_release(ctx); | |
67207b96 AB |
1123 | |
1124 | return 4; | |
1125 | } | |
1126 | ||
b1e2270f NP |
1127 | static int |
1128 | spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1129 | { |
87ff6090 JK |
1130 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1131 | return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); | |
1132 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1133 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1134 | * signal 1 and 2 area | |
1135 | */ | |
87ff6090 | 1136 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1137 | #else |
1138 | #error unsupported page size | |
1139 | #endif | |
6df10a82 MN |
1140 | } |
1141 | ||
f0f37e2f | 1142 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1143 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1144 | }; |
1145 | ||
1146 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1147 | { | |
1148 | if (!(vma->vm_flags & VM_SHARED)) | |
1149 | return -EINVAL; | |
1150 | ||
78bde53e | 1151 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1152 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1153 | |
1154 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1155 | return 0; | |
1156 | } | |
6df10a82 | 1157 | |
5dfe4c96 | 1158 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1159 | .open = spufs_signal1_open, |
43c2bbd9 | 1160 | .release = spufs_signal1_release, |
67207b96 AB |
1161 | .read = spufs_signal1_read, |
1162 | .write = spufs_signal1_write, | |
6df10a82 | 1163 | .mmap = spufs_signal1_mmap, |
fc15351d | 1164 | .llseek = no_llseek, |
67207b96 AB |
1165 | }; |
1166 | ||
d054b36f JK |
1167 | static const struct file_operations spufs_signal1_nosched_fops = { |
1168 | .open = spufs_signal1_open, | |
1169 | .release = spufs_signal1_release, | |
1170 | .write = spufs_signal1_write, | |
1171 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1172 | .llseek = no_llseek, |
d054b36f JK |
1173 | }; |
1174 | ||
6df10a82 MN |
1175 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1176 | { | |
1177 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1178 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1179 | |
47d3a5fa | 1180 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1181 | file->private_data = ctx; |
43c2bbd9 CH |
1182 | if (!i->i_openers++) |
1183 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1184 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1185 | return nonseekable_open(inode, file); |
1186 | } | |
1187 | ||
43c2bbd9 CH |
1188 | static int |
1189 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1190 | { | |
1191 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1192 | struct spu_context *ctx = i->i_ctx; | |
1193 | ||
47d3a5fa | 1194 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1195 | if (!--i->i_openers) |
1196 | ctx->signal2 = NULL; | |
47d3a5fa | 1197 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1198 | return 0; |
1199 | } | |
1200 | ||
bf1ab978 | 1201 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1202 | size_t len, loff_t *pos) |
1203 | { | |
17f88ceb | 1204 | int ret = 0; |
67207b96 AB |
1205 | u32 data; |
1206 | ||
67207b96 AB |
1207 | if (len < 4) |
1208 | return -EINVAL; | |
1209 | ||
17f88ceb DGM |
1210 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1211 | data = ctx->csa.spu_chnldata_RW[4]; | |
1212 | ret = 4; | |
1213 | } | |
8b3d6663 | 1214 | |
17f88ceb DGM |
1215 | if (!ret) |
1216 | goto out; | |
1217 | ||
67207b96 AB |
1218 | if (copy_to_user(buf, &data, 4)) |
1219 | return -EFAULT; | |
1220 | ||
17f88ceb | 1221 | out: |
bf1ab978 DGM |
1222 | return ret; |
1223 | } | |
1224 | ||
1225 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1226 | size_t len, loff_t *pos) | |
1227 | { | |
1228 | struct spu_context *ctx = file->private_data; | |
1229 | int ret; | |
1230 | ||
c9101bdb CH |
1231 | ret = spu_acquire_saved(ctx); |
1232 | if (ret) | |
1233 | return ret; | |
bf1ab978 | 1234 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1235 | spu_release_saved(ctx); |
bf1ab978 DGM |
1236 | |
1237 | return ret; | |
67207b96 AB |
1238 | } |
1239 | ||
1240 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1241 | size_t len, loff_t *pos) | |
1242 | { | |
1243 | struct spu_context *ctx; | |
c9101bdb | 1244 | ssize_t ret; |
67207b96 AB |
1245 | u32 data; |
1246 | ||
1247 | ctx = file->private_data; | |
67207b96 AB |
1248 | |
1249 | if (len < 4) | |
1250 | return -EINVAL; | |
1251 | ||
1252 | if (copy_from_user(&data, buf, 4)) | |
1253 | return -EFAULT; | |
1254 | ||
c9101bdb CH |
1255 | ret = spu_acquire(ctx); |
1256 | if (ret) | |
1257 | return ret; | |
8b3d6663 AB |
1258 | ctx->ops->signal2_write(ctx, data); |
1259 | spu_release(ctx); | |
67207b96 AB |
1260 | |
1261 | return 4; | |
1262 | } | |
1263 | ||
27d5bf2a | 1264 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1265 | static int |
1266 | spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1267 | { |
87ff6090 JK |
1268 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
1269 | return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); | |
1270 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 | |
27d5bf2a BH |
1271 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1272 | * signal 1 and 2 area | |
1273 | */ | |
87ff6090 | 1274 | return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1275 | #else |
1276 | #error unsupported page size | |
1277 | #endif | |
6df10a82 MN |
1278 | } |
1279 | ||
f0f37e2f | 1280 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1281 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1282 | }; |
1283 | ||
1284 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1285 | { | |
1286 | if (!(vma->vm_flags & VM_SHARED)) | |
1287 | return -EINVAL; | |
1288 | ||
78bde53e | 1289 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1290 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1291 | |
1292 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1293 | return 0; | |
1294 | } | |
27d5bf2a BH |
1295 | #else /* SPUFS_MMAP_4K */ |
1296 | #define spufs_signal2_mmap NULL | |
1297 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1298 | |
5dfe4c96 | 1299 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1300 | .open = spufs_signal2_open, |
43c2bbd9 | 1301 | .release = spufs_signal2_release, |
67207b96 AB |
1302 | .read = spufs_signal2_read, |
1303 | .write = spufs_signal2_write, | |
6df10a82 | 1304 | .mmap = spufs_signal2_mmap, |
fc15351d | 1305 | .llseek = no_llseek, |
67207b96 AB |
1306 | }; |
1307 | ||
d054b36f JK |
1308 | static const struct file_operations spufs_signal2_nosched_fops = { |
1309 | .open = spufs_signal2_open, | |
1310 | .release = spufs_signal2_release, | |
1311 | .write = spufs_signal2_write, | |
1312 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1313 | .llseek = no_llseek, |
d054b36f JK |
1314 | }; |
1315 | ||
104f0cc2 ME |
1316 | /* |
1317 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1318 | * work of acquiring (or not) the SPU context before calling through | |
1319 | * to the actual get routine. The set routine is called directly. | |
1320 | */ | |
1321 | #define SPU_ATTR_NOACQUIRE 0 | |
1322 | #define SPU_ATTR_ACQUIRE 1 | |
1323 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1324 | ||
1325 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1326 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1327 | { \ |
1328 | struct spu_context *ctx = data; \ | |
c9101bdb | 1329 | int ret = 0; \ |
104f0cc2 ME |
1330 | \ |
1331 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1332 | ret = spu_acquire(ctx); \ |
1333 | if (ret) \ | |
1334 | return ret; \ | |
197b1a82 | 1335 | *val = __get(ctx); \ |
104f0cc2 ME |
1336 | spu_release(ctx); \ |
1337 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1338 | ret = spu_acquire_saved(ctx); \ |
1339 | if (ret) \ | |
1340 | return ret; \ | |
197b1a82 | 1341 | *val = __get(ctx); \ |
104f0cc2 ME |
1342 | spu_release_saved(ctx); \ |
1343 | } else \ | |
197b1a82 | 1344 | *val = __get(ctx); \ |
104f0cc2 | 1345 | \ |
197b1a82 | 1346 | return 0; \ |
104f0cc2 | 1347 | } \ |
197b1a82 | 1348 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1349 | |
197b1a82 | 1350 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1351 | { |
1352 | struct spu_context *ctx = data; | |
c9101bdb | 1353 | int ret; |
67207b96 | 1354 | |
c9101bdb CH |
1355 | ret = spu_acquire(ctx); |
1356 | if (ret) | |
1357 | return ret; | |
8b3d6663 AB |
1358 | ctx->ops->signal1_type_set(ctx, val); |
1359 | spu_release(ctx); | |
197b1a82 CH |
1360 | |
1361 | return 0; | |
67207b96 AB |
1362 | } |
1363 | ||
104f0cc2 | 1364 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1365 | { |
bf1ab978 DGM |
1366 | return ctx->ops->signal1_type_get(ctx); |
1367 | } | |
104f0cc2 | 1368 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1369 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1370 | |
67207b96 | 1371 | |
197b1a82 | 1372 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1373 | { |
1374 | struct spu_context *ctx = data; | |
c9101bdb | 1375 | int ret; |
67207b96 | 1376 | |
c9101bdb CH |
1377 | ret = spu_acquire(ctx); |
1378 | if (ret) | |
1379 | return ret; | |
8b3d6663 AB |
1380 | ctx->ops->signal2_type_set(ctx, val); |
1381 | spu_release(ctx); | |
197b1a82 CH |
1382 | |
1383 | return 0; | |
67207b96 AB |
1384 | } |
1385 | ||
104f0cc2 | 1386 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1387 | { |
bf1ab978 DGM |
1388 | return ctx->ops->signal2_type_get(ctx); |
1389 | } | |
104f0cc2 | 1390 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1391 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1392 | |
27d5bf2a | 1393 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1394 | static int |
1395 | spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
d9379c4b | 1396 | { |
87ff6090 | 1397 | return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b | 1398 | } |
1399 | ||
f0f37e2f | 1400 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1401 | .fault = spufs_mss_mmap_fault, |
d9379c4b | 1402 | }; |
1403 | ||
1404 | /* | |
1405 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b | 1406 | */ |
1407 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1408 | { | |
1409 | if (!(vma->vm_flags & VM_SHARED)) | |
1410 | return -EINVAL; | |
1411 | ||
78bde53e | 1412 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1413 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b | 1414 | |
1415 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1416 | return 0; | |
1417 | } | |
27d5bf2a BH |
1418 | #else /* SPUFS_MMAP_4K */ |
1419 | #define spufs_mss_mmap NULL | |
1420 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b | 1421 | |
1422 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1423 | { | |
1424 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1425 | struct spu_context *ctx = i->i_ctx; |
d9379c4b | 1426 | |
1427 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1428 | |
47d3a5fa | 1429 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1430 | if (!i->i_openers++) |
1431 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1432 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b | 1433 | return nonseekable_open(inode, file); |
1434 | } | |
1435 | ||
43c2bbd9 CH |
1436 | static int |
1437 | spufs_mss_release(struct inode *inode, struct file *file) | |
1438 | { | |
1439 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1440 | struct spu_context *ctx = i->i_ctx; | |
1441 | ||
47d3a5fa | 1442 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1443 | if (!--i->i_openers) |
1444 | ctx->mss = NULL; | |
47d3a5fa | 1445 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1446 | return 0; |
1447 | } | |
1448 | ||
5dfe4c96 | 1449 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1450 | .open = spufs_mss_open, |
43c2bbd9 | 1451 | .release = spufs_mss_release, |
d9379c4b | 1452 | .mmap = spufs_mss_mmap, |
fc15351d | 1453 | .llseek = no_llseek, |
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, |
fc15351d | 1511 | .llseek = no_llseek, |
d9379c4b | 1512 | }; |
1513 | ||
1514 | ||
27d5bf2a | 1515 | #if SPUFS_MMAP_4K |
b1e2270f NP |
1516 | static int |
1517 | spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
6df10a82 | 1518 | { |
87ff6090 | 1519 | return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1520 | } |
1521 | ||
f0f37e2f | 1522 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1523 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1524 | }; |
1525 | ||
1526 | /* | |
1527 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1528 | */ |
1529 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1530 | { | |
1531 | if (!(vma->vm_flags & VM_SHARED)) | |
1532 | return -EINVAL; | |
1533 | ||
78bde53e | 1534 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1535 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1536 | |
1537 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1538 | return 0; | |
1539 | } | |
27d5bf2a BH |
1540 | #else /* SPUFS_MMAP_4K */ |
1541 | #define spufs_mfc_mmap NULL | |
1542 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1543 | |
1544 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1545 | { | |
1546 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1547 | struct spu_context *ctx = i->i_ctx; | |
1548 | ||
1549 | /* we don't want to deal with DMA into other processes */ | |
1550 | if (ctx->owner != current->mm) | |
1551 | return -EINVAL; | |
1552 | ||
1553 | if (atomic_read(&inode->i_count) != 1) | |
1554 | return -EBUSY; | |
1555 | ||
47d3a5fa | 1556 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1557 | file->private_data = ctx; |
43c2bbd9 CH |
1558 | if (!i->i_openers++) |
1559 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1560 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1561 | return nonseekable_open(inode, file); |
1562 | } | |
1563 | ||
43c2bbd9 CH |
1564 | static int |
1565 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1566 | { | |
1567 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1568 | struct spu_context *ctx = i->i_ctx; | |
1569 | ||
47d3a5fa | 1570 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1571 | if (!--i->i_openers) |
1572 | ctx->mfc = NULL; | |
47d3a5fa | 1573 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1574 | return 0; |
1575 | } | |
1576 | ||
a33a7d73 AB |
1577 | /* interrupt-level mfc callback function. */ |
1578 | void spufs_mfc_callback(struct spu *spu) | |
1579 | { | |
1580 | struct spu_context *ctx = spu->ctx; | |
1581 | ||
e65c2f6f LB |
1582 | if (!ctx) |
1583 | return; | |
1584 | ||
a33a7d73 AB |
1585 | wake_up_all(&ctx->mfc_wq); |
1586 | ||
e48b1b45 | 1587 | pr_debug("%s %s\n", __func__, spu->name); |
a33a7d73 AB |
1588 | if (ctx->mfc_fasync) { |
1589 | u32 free_elements, tagstatus; | |
1590 | unsigned int mask; | |
1591 | ||
1592 | /* no need for spu_acquire in interrupt context */ | |
1593 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1594 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1595 | ||
1596 | mask = 0; | |
1597 | if (free_elements & 0xffff) | |
1598 | mask |= POLLOUT; | |
1599 | if (tagstatus & ctx->tagwait) | |
1600 | mask |= POLLIN; | |
1601 | ||
1602 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); | |
1603 | } | |
1604 | } | |
1605 | ||
1606 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1607 | { | |
1608 | /* See if there is one tag group is complete */ | |
1609 | /* FIXME we need locking around tagwait */ | |
1610 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1611 | ctx->tagwait &= ~*status; | |
1612 | if (*status) | |
1613 | return 1; | |
1614 | ||
1615 | /* enable interrupt waiting for any tag group, | |
1616 | may silently fail if interrupts are already enabled */ | |
1617 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1622 | size_t size, loff_t *pos) | |
1623 | { | |
1624 | struct spu_context *ctx = file->private_data; | |
1625 | int ret = -EINVAL; | |
1626 | u32 status; | |
1627 | ||
1628 | if (size != 4) | |
1629 | goto out; | |
1630 | ||
c9101bdb CH |
1631 | ret = spu_acquire(ctx); |
1632 | if (ret) | |
1633 | return ret; | |
1634 | ||
1635 | ret = -EINVAL; | |
a33a7d73 AB |
1636 | if (file->f_flags & O_NONBLOCK) { |
1637 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1638 | if (!(status & ctx->tagwait)) | |
1639 | ret = -EAGAIN; | |
1640 | else | |
c9101bdb | 1641 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1642 | ctx->tagwait &= ~status; |
1643 | } else { | |
1644 | ret = spufs_wait(ctx->mfc_wq, | |
1645 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1646 | if (ret) |
1647 | goto out; | |
a33a7d73 AB |
1648 | } |
1649 | spu_release(ctx); | |
1650 | ||
a33a7d73 AB |
1651 | ret = 4; |
1652 | if (copy_to_user(buffer, &status, 4)) | |
1653 | ret = -EFAULT; | |
1654 | ||
1655 | out: | |
1656 | return ret; | |
1657 | } | |
1658 | ||
1659 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1660 | { | |
9477e455 | 1661 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1662 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1663 | ||
1664 | switch (cmd->cmd) { | |
1665 | case MFC_PUT_CMD: | |
1666 | case MFC_PUTF_CMD: | |
1667 | case MFC_PUTB_CMD: | |
1668 | case MFC_GET_CMD: | |
1669 | case MFC_GETF_CMD: | |
1670 | case MFC_GETB_CMD: | |
1671 | break; | |
1672 | default: | |
1673 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1674 | return -EIO; | |
1675 | } | |
1676 | ||
1677 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1678 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1679 | cmd->ea, cmd->lsa); |
1680 | return -EIO; | |
1681 | } | |
1682 | ||
1683 | switch (cmd->size & 0xf) { | |
1684 | case 1: | |
1685 | break; | |
1686 | case 2: | |
1687 | if (cmd->lsa & 1) | |
1688 | goto error; | |
1689 | break; | |
1690 | case 4: | |
1691 | if (cmd->lsa & 3) | |
1692 | goto error; | |
1693 | break; | |
1694 | case 8: | |
1695 | if (cmd->lsa & 7) | |
1696 | goto error; | |
1697 | break; | |
1698 | case 0: | |
1699 | if (cmd->lsa & 15) | |
1700 | goto error; | |
1701 | break; | |
1702 | error: | |
1703 | default: | |
1704 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1705 | cmd->lsa & 0xf, cmd->size); | |
1706 | return -EIO; | |
1707 | } | |
1708 | ||
1709 | if (cmd->size > 16 * 1024) { | |
1710 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1711 | return -EIO; | |
1712 | } | |
1713 | ||
1714 | if (cmd->tag & 0xfff0) { | |
1715 | /* we reserve the higher tag numbers for kernel use */ | |
1716 | pr_debug("invalid DMA tag\n"); | |
1717 | return -EIO; | |
1718 | } | |
1719 | ||
1720 | if (cmd->class) { | |
1721 | /* not supported in this version */ | |
1722 | pr_debug("invalid DMA class\n"); | |
1723 | return -EIO; | |
1724 | } | |
1725 | ||
1726 | return 0; | |
1727 | } | |
1728 | ||
1729 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1730 | struct mfc_dma_command cmd, | |
1731 | int *error) | |
1732 | { | |
1733 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1734 | if (*error == -EAGAIN) { | |
1735 | /* wait for any tag group to complete | |
1736 | so we have space for the new command */ | |
1737 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1738 | /* try again, because the queue might be | |
1739 | empty again */ | |
1740 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1741 | if (*error == -EAGAIN) | |
1742 | return 0; | |
1743 | } | |
1744 | return 1; | |
1745 | } | |
1746 | ||
1747 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1748 | size_t size, loff_t *pos) | |
1749 | { | |
1750 | struct spu_context *ctx = file->private_data; | |
1751 | struct mfc_dma_command cmd; | |
1752 | int ret = -EINVAL; | |
1753 | ||
1754 | if (size != sizeof cmd) | |
1755 | goto out; | |
1756 | ||
1757 | ret = -EFAULT; | |
1758 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1759 | goto out; | |
1760 | ||
1761 | ret = spufs_check_valid_dma(&cmd); | |
1762 | if (ret) | |
1763 | goto out; | |
1764 | ||
c9101bdb CH |
1765 | ret = spu_acquire(ctx); |
1766 | if (ret) | |
1767 | goto out; | |
1768 | ||
33bfd7a7 | 1769 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1770 | if (ret) |
1771 | goto out; | |
1772 | ||
a33a7d73 AB |
1773 | if (file->f_flags & O_NONBLOCK) { |
1774 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1775 | } else { | |
1776 | int status; | |
1777 | ret = spufs_wait(ctx->mfc_wq, | |
1778 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1779 | if (ret) |
1780 | goto out; | |
a33a7d73 AB |
1781 | if (status) |
1782 | ret = status; | |
1783 | } | |
a33a7d73 AB |
1784 | |
1785 | if (ret) | |
933b0e35 | 1786 | goto out_unlock; |
a33a7d73 AB |
1787 | |
1788 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1789 | ret = size; |
a33a7d73 | 1790 | |
933b0e35 KA |
1791 | out_unlock: |
1792 | spu_release(ctx); | |
a33a7d73 AB |
1793 | out: |
1794 | return ret; | |
1795 | } | |
1796 | ||
1797 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) | |
1798 | { | |
1799 | struct spu_context *ctx = file->private_data; | |
1800 | u32 free_elements, tagstatus; | |
1801 | unsigned int mask; | |
1802 | ||
933b0e35 KA |
1803 | poll_wait(file, &ctx->mfc_wq, wait); |
1804 | ||
c9101bdb CH |
1805 | /* |
1806 | * For now keep this uninterruptible and also ignore the rule | |
1807 | * that poll should not sleep. Will be fixed later. | |
1808 | */ | |
1809 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1810 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1811 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1812 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1813 | spu_release(ctx); | |
1814 | ||
a33a7d73 AB |
1815 | mask = 0; |
1816 | if (free_elements & 0xffff) | |
1817 | mask |= POLLOUT | POLLWRNORM; | |
1818 | if (tagstatus & ctx->tagwait) | |
1819 | mask |= POLLIN | POLLRDNORM; | |
1820 | ||
e48b1b45 | 1821 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1822 | free_elements, tagstatus, ctx->tagwait); |
1823 | ||
1824 | return mask; | |
1825 | } | |
1826 | ||
73b6af8a | 1827 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1828 | { |
1829 | struct spu_context *ctx = file->private_data; | |
1830 | int ret; | |
1831 | ||
c9101bdb CH |
1832 | ret = spu_acquire(ctx); |
1833 | if (ret) | |
eebead5b | 1834 | goto out; |
a33a7d73 AB |
1835 | #if 0 |
1836 | /* this currently hangs */ | |
1837 | ret = spufs_wait(ctx->mfc_wq, | |
1838 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1839 | if (ret) | |
1840 | goto out; | |
1841 | ret = spufs_wait(ctx->mfc_wq, | |
1842 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1843 | if (ret) |
1844 | goto out; | |
a33a7d73 AB |
1845 | #else |
1846 | ret = 0; | |
1847 | #endif | |
1848 | spu_release(ctx); | |
eebead5b | 1849 | out: |
a33a7d73 AB |
1850 | return ret; |
1851 | } | |
1852 | ||
02c24a82 JB |
1853 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1854 | { | |
496ad9aa | 1855 | struct inode *inode = file_inode(file); |
02c24a82 JB |
1856 | int err = filemap_write_and_wait_range(inode->i_mapping, start, end); |
1857 | if (!err) { | |
1858 | mutex_lock(&inode->i_mutex); | |
1859 | err = spufs_mfc_flush(file, NULL); | |
1860 | mutex_unlock(&inode->i_mutex); | |
1861 | } | |
1862 | return err; | |
a33a7d73 AB |
1863 | } |
1864 | ||
1865 | static int spufs_mfc_fasync(int fd, struct file *file, int on) | |
1866 | { | |
1867 | struct spu_context *ctx = file->private_data; | |
1868 | ||
1869 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); | |
1870 | } | |
1871 | ||
5dfe4c96 | 1872 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1873 | .open = spufs_mfc_open, |
43c2bbd9 | 1874 | .release = spufs_mfc_release, |
a33a7d73 AB |
1875 | .read = spufs_mfc_read, |
1876 | .write = spufs_mfc_write, | |
1877 | .poll = spufs_mfc_poll, | |
1878 | .flush = spufs_mfc_flush, | |
1879 | .fsync = spufs_mfc_fsync, | |
1880 | .fasync = spufs_mfc_fasync, | |
6df10a82 | 1881 | .mmap = spufs_mfc_mmap, |
fc15351d | 1882 | .llseek = no_llseek, |
a33a7d73 AB |
1883 | }; |
1884 | ||
197b1a82 | 1885 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1886 | { |
1887 | struct spu_context *ctx = data; | |
c9101bdb CH |
1888 | int ret; |
1889 | ||
1890 | ret = spu_acquire(ctx); | |
1891 | if (ret) | |
1892 | return ret; | |
8b3d6663 AB |
1893 | ctx->ops->npc_write(ctx, val); |
1894 | spu_release(ctx); | |
197b1a82 CH |
1895 | |
1896 | return 0; | |
67207b96 AB |
1897 | } |
1898 | ||
104f0cc2 | 1899 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1900 | { |
1901 | return ctx->ops->npc_read(ctx); | |
1902 | } | |
104f0cc2 ME |
1903 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1904 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1905 | |
197b1a82 | 1906 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1907 | { |
1908 | struct spu_context *ctx = data; | |
1909 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1910 | int ret; |
1911 | ||
1912 | ret = spu_acquire_saved(ctx); | |
1913 | if (ret) | |
1914 | return ret; | |
8b3d6663 | 1915 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1916 | spu_release_saved(ctx); |
197b1a82 CH |
1917 | |
1918 | return 0; | |
8b3d6663 AB |
1919 | } |
1920 | ||
104f0cc2 | 1921 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1922 | { |
8b3d6663 | 1923 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1924 | return lscsa->decr.slot[0]; |
1925 | } | |
104f0cc2 ME |
1926 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1927 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1928 | |
197b1a82 | 1929 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1930 | { |
1931 | struct spu_context *ctx = data; | |
c9101bdb CH |
1932 | int ret; |
1933 | ||
1934 | ret = spu_acquire_saved(ctx); | |
1935 | if (ret) | |
1936 | return ret; | |
d40a01d4 MN |
1937 | if (val) |
1938 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1939 | else | |
1940 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1941 | spu_release_saved(ctx); |
197b1a82 CH |
1942 | |
1943 | return 0; | |
8b3d6663 AB |
1944 | } |
1945 | ||
104f0cc2 | 1946 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1947 | { |
d40a01d4 MN |
1948 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1949 | return SPU_DECR_STATUS_RUNNING; | |
1950 | else | |
1951 | return 0; | |
bf1ab978 | 1952 | } |
104f0cc2 ME |
1953 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1954 | spufs_decr_status_set, "0x%llx\n", | |
1955 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1956 | |
197b1a82 | 1957 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1958 | { |
1959 | struct spu_context *ctx = data; | |
1960 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1961 | int ret; |
1962 | ||
1963 | ret = spu_acquire_saved(ctx); | |
1964 | if (ret) | |
1965 | return ret; | |
8b3d6663 | 1966 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1967 | spu_release_saved(ctx); |
197b1a82 CH |
1968 | |
1969 | return 0; | |
8b3d6663 AB |
1970 | } |
1971 | ||
104f0cc2 | 1972 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1973 | { |
8b3d6663 | 1974 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1975 | return lscsa->event_mask.slot[0]; |
1976 | } | |
1977 | ||
104f0cc2 ME |
1978 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1979 | spufs_event_mask_set, "0x%llx\n", | |
1980 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1981 | |
104f0cc2 | 1982 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1983 | { |
b9e3bd77 | 1984 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1985 | u64 stat; |
b9e3bd77 DGM |
1986 | stat = state->spu_chnlcnt_RW[0]; |
1987 | if (stat) | |
bf1ab978 DGM |
1988 | return state->spu_chnldata_RW[0]; |
1989 | return 0; | |
1990 | } | |
104f0cc2 ME |
1991 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1992 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1993 | |
197b1a82 | 1994 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1995 | { |
1996 | struct spu_context *ctx = data; | |
1997 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1998 | int ret; |
1999 | ||
2000 | ret = spu_acquire_saved(ctx); | |
2001 | if (ret) | |
2002 | return ret; | |
8b3d6663 | 2003 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 2004 | spu_release_saved(ctx); |
197b1a82 CH |
2005 | |
2006 | return 0; | |
8b3d6663 AB |
2007 | } |
2008 | ||
104f0cc2 | 2009 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 2010 | { |
8b3d6663 | 2011 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 2012 | return lscsa->srr0.slot[0]; |
8b3d6663 | 2013 | } |
104f0cc2 ME |
2014 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
2015 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 2016 | |
104f0cc2 | 2017 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 2018 | { |
7b1a7014 | 2019 | u64 num; |
2020 | ||
7b1a7014 | 2021 | if (ctx->state == SPU_STATE_RUNNABLE) |
2022 | num = ctx->spu->number; | |
2023 | else | |
2024 | num = (unsigned int)-1; | |
7b1a7014 | 2025 | |
2026 | return num; | |
2027 | } | |
104f0cc2 ME |
2028 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
2029 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 2030 | |
104f0cc2 | 2031 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
2032 | { |
2033 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 2034 | return ctx->object_id; |
bf1ab978 DGM |
2035 | } |
2036 | ||
197b1a82 | 2037 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
2038 | { |
2039 | struct spu_context *ctx = data; | |
2040 | ctx->object_id = id; | |
197b1a82 CH |
2041 | |
2042 | return 0; | |
86767277 AB |
2043 | } |
2044 | ||
104f0cc2 ME |
2045 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
2046 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 2047 | |
104f0cc2 | 2048 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 2049 | { |
bf1ab978 DGM |
2050 | return ctx->csa.priv2.spu_lslr_RW; |
2051 | } | |
104f0cc2 ME |
2052 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
2053 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
2054 | |
2055 | static int spufs_info_open(struct inode *inode, struct file *file) | |
2056 | { | |
2057 | struct spufs_inode_info *i = SPUFS_I(inode); | |
2058 | struct spu_context *ctx = i->i_ctx; | |
2059 | file->private_data = ctx; | |
2060 | return 0; | |
2061 | } | |
2062 | ||
cbe709c1 BH |
2063 | static int spufs_caps_show(struct seq_file *s, void *private) |
2064 | { | |
2065 | struct spu_context *ctx = s->private; | |
2066 | ||
2067 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
2068 | seq_puts(s, "sched\n"); | |
2069 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
2070 | seq_puts(s, "step\n"); | |
2071 | return 0; | |
2072 | } | |
2073 | ||
2074 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
2075 | { | |
2076 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
2077 | } | |
2078 | ||
2079 | static const struct file_operations spufs_caps_fops = { | |
2080 | .open = spufs_caps_open, | |
2081 | .read = seq_read, | |
2082 | .llseek = seq_lseek, | |
2083 | .release = single_release, | |
2084 | }; | |
2085 | ||
bf1ab978 DGM |
2086 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
2087 | char __user *buf, size_t len, loff_t *pos) | |
2088 | { | |
bf1ab978 DGM |
2089 | u32 data; |
2090 | ||
cbea9238 JK |
2091 | /* EOF if there's no entry in the mbox */ |
2092 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
2093 | return 0; | |
2094 | ||
2095 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
2096 | |
2097 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2098 | } | |
2099 | ||
69a2f00c DGM |
2100 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
2101 | size_t len, loff_t *pos) | |
2102 | { | |
bf1ab978 | 2103 | int ret; |
69a2f00c | 2104 | struct spu_context *ctx = file->private_data; |
69a2f00c DGM |
2105 | |
2106 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2107 | return -EFAULT; | |
2108 | ||
c9101bdb CH |
2109 | ret = spu_acquire_saved(ctx); |
2110 | if (ret) | |
2111 | return ret; | |
69a2f00c | 2112 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2113 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2114 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2115 | spu_release_saved(ctx); |
69a2f00c | 2116 | |
bf1ab978 | 2117 | return ret; |
69a2f00c DGM |
2118 | } |
2119 | ||
5dfe4c96 | 2120 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2121 | .open = spufs_info_open, |
2122 | .read = spufs_mbox_info_read, | |
2123 | .llseek = generic_file_llseek, | |
2124 | }; | |
2125 | ||
bf1ab978 DGM |
2126 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2127 | char __user *buf, size_t len, loff_t *pos) | |
2128 | { | |
bf1ab978 DGM |
2129 | u32 data; |
2130 | ||
cbea9238 JK |
2131 | /* EOF if there's no entry in the ibox */ |
2132 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2133 | return 0; | |
2134 | ||
2135 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2136 | |
2137 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2138 | } | |
2139 | ||
69a2f00c DGM |
2140 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2141 | size_t len, loff_t *pos) | |
2142 | { | |
2143 | struct spu_context *ctx = file->private_data; | |
bf1ab978 | 2144 | int ret; |
69a2f00c DGM |
2145 | |
2146 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2147 | return -EFAULT; | |
2148 | ||
c9101bdb CH |
2149 | ret = spu_acquire_saved(ctx); |
2150 | if (ret) | |
2151 | return ret; | |
69a2f00c | 2152 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2153 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
69a2f00c | 2154 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2155 | spu_release_saved(ctx); |
69a2f00c | 2156 | |
bf1ab978 | 2157 | return ret; |
69a2f00c DGM |
2158 | } |
2159 | ||
5dfe4c96 | 2160 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2161 | .open = spufs_info_open, |
2162 | .read = spufs_ibox_info_read, | |
2163 | .llseek = generic_file_llseek, | |
2164 | }; | |
2165 | ||
bf1ab978 DGM |
2166 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2167 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2168 | { |
69a2f00c DGM |
2169 | int i, cnt; |
2170 | u32 data[4]; | |
2171 | u32 wbox_stat; | |
2172 | ||
bf1ab978 DGM |
2173 | wbox_stat = ctx->csa.prob.mb_stat_R; |
2174 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); | |
2175 | for (i = 0; i < cnt; i++) { | |
2176 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2177 | } | |
2178 | ||
2179 | return simple_read_from_buffer(buf, len, pos, &data, | |
2180 | cnt * sizeof(u32)); | |
2181 | } | |
2182 | ||
2183 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2184 | size_t len, loff_t *pos) | |
2185 | { | |
2186 | struct spu_context *ctx = file->private_data; | |
2187 | int ret; | |
2188 | ||
69a2f00c DGM |
2189 | if (!access_ok(VERIFY_WRITE, buf, len)) |
2190 | return -EFAULT; | |
2191 | ||
c9101bdb CH |
2192 | ret = spu_acquire_saved(ctx); |
2193 | if (ret) | |
2194 | return ret; | |
69a2f00c | 2195 | spin_lock(&ctx->csa.register_lock); |
bf1ab978 | 2196 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
69a2f00c | 2197 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2198 | spu_release_saved(ctx); |
69a2f00c | 2199 | |
bf1ab978 | 2200 | return ret; |
69a2f00c DGM |
2201 | } |
2202 | ||
5dfe4c96 | 2203 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2204 | .open = spufs_info_open, |
2205 | .read = spufs_wbox_info_read, | |
2206 | .llseek = generic_file_llseek, | |
2207 | }; | |
2208 | ||
bf1ab978 DGM |
2209 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
2210 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2211 | { |
b9e3bd77 DGM |
2212 | struct spu_dma_info info; |
2213 | struct mfc_cq_sr *qp, *spuqp; | |
2214 | int i; | |
2215 | ||
b9e3bd77 DGM |
2216 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2217 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2218 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2219 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2220 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
2221 | for (i = 0; i < 16; i++) { | |
2222 | qp = &info.dma_info_command_data[i]; | |
2223 | spuqp = &ctx->csa.priv2.spuq[i]; | |
2224 | ||
2225 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2226 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2227 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2228 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2229 | } | |
b9e3bd77 DGM |
2230 | |
2231 | return simple_read_from_buffer(buf, len, pos, &info, | |
2232 | sizeof info); | |
2233 | } | |
2234 | ||
bf1ab978 DGM |
2235 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2236 | size_t len, loff_t *pos) | |
2237 | { | |
2238 | struct spu_context *ctx = file->private_data; | |
2239 | int ret; | |
2240 | ||
2241 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2242 | return -EFAULT; | |
2243 | ||
c9101bdb CH |
2244 | ret = spu_acquire_saved(ctx); |
2245 | if (ret) | |
2246 | return ret; | |
bf1ab978 DGM |
2247 | spin_lock(&ctx->csa.register_lock); |
2248 | ret = __spufs_dma_info_read(ctx, buf, len, pos); | |
2249 | spin_unlock(&ctx->csa.register_lock); | |
27b1ea09 | 2250 | spu_release_saved(ctx); |
bf1ab978 DGM |
2251 | |
2252 | return ret; | |
2253 | } | |
2254 | ||
5dfe4c96 | 2255 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2256 | .open = spufs_info_open, |
2257 | .read = spufs_dma_info_read, | |
fc15351d | 2258 | .llseek = no_llseek, |
b9e3bd77 DGM |
2259 | }; |
2260 | ||
bf1ab978 DGM |
2261 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2262 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2263 | { |
b9e3bd77 | 2264 | struct spu_proxydma_info info; |
b9e3bd77 | 2265 | struct mfc_cq_sr *qp, *puqp; |
bf1ab978 | 2266 | int ret = sizeof info; |
b9e3bd77 DGM |
2267 | int i; |
2268 | ||
2269 | if (len < ret) | |
2270 | return -EINVAL; | |
2271 | ||
2272 | if (!access_ok(VERIFY_WRITE, buf, len)) | |
2273 | return -EFAULT; | |
2274 | ||
b9e3bd77 DGM |
2275 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
2276 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2277 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2278 | for (i = 0; i < 8; i++) { | |
2279 | qp = &info.proxydma_info_command_data[i]; | |
2280 | puqp = &ctx->csa.priv2.puq[i]; | |
2281 | ||
2282 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2283 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2284 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2285 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2286 | } | |
bf1ab978 DGM |
2287 | |
2288 | return simple_read_from_buffer(buf, len, pos, &info, | |
2289 | sizeof info); | |
2290 | } | |
2291 | ||
2292 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2293 | size_t len, loff_t *pos) | |
2294 | { | |
2295 | struct spu_context *ctx = file->private_data; | |
2296 | int ret; | |
2297 | ||
c9101bdb CH |
2298 | ret = spu_acquire_saved(ctx); |
2299 | if (ret) | |
2300 | return ret; | |
bf1ab978 DGM |
2301 | spin_lock(&ctx->csa.register_lock); |
2302 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); | |
b9e3bd77 | 2303 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2304 | spu_release_saved(ctx); |
b9e3bd77 | 2305 | |
b9e3bd77 DGM |
2306 | return ret; |
2307 | } | |
2308 | ||
5dfe4c96 | 2309 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2310 | .open = spufs_info_open, |
2311 | .read = spufs_proxydma_info_read, | |
fc15351d | 2312 | .llseek = no_llseek, |
b9e3bd77 DGM |
2313 | }; |
2314 | ||
476273ad CH |
2315 | static int spufs_show_tid(struct seq_file *s, void *private) |
2316 | { | |
2317 | struct spu_context *ctx = s->private; | |
2318 | ||
2319 | seq_printf(s, "%d\n", ctx->tid); | |
2320 | return 0; | |
2321 | } | |
2322 | ||
2323 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2324 | { | |
2325 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2326 | } | |
2327 | ||
2328 | static const struct file_operations spufs_tid_fops = { | |
2329 | .open = spufs_tid_open, | |
2330 | .read = seq_read, | |
2331 | .llseek = seq_lseek, | |
2332 | .release = single_release, | |
2333 | }; | |
2334 | ||
e9f8a0b6 CH |
2335 | static const char *ctx_state_names[] = { |
2336 | "user", "system", "iowait", "loaded" | |
2337 | }; | |
2338 | ||
2339 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2340 | enum spu_utilization_state state) |
e9f8a0b6 | 2341 | { |
27ec41d3 AD |
2342 | struct timespec ts; |
2343 | unsigned long long time = ctx->stats.times[state]; | |
e9f8a0b6 | 2344 | |
27ec41d3 AD |
2345 | /* |
2346 | * In general, utilization statistics are updated by the controlling | |
2347 | * thread as the spu context moves through various well defined | |
2348 | * state transitions, but if the context is lazily loaded its | |
2349 | * utilization statistics are not updated as the controlling thread | |
2350 | * is not tightly coupled with the execution of the spu context. We | |
2351 | * calculate and apply the time delta from the last recorded state | |
2352 | * of the spu context. | |
2353 | */ | |
2354 | if (ctx->spu && ctx->stats.util_state == state) { | |
2355 | ktime_get_ts(&ts); | |
2356 | time += timespec_to_ns(&ts) - ctx->stats.tstamp; | |
2357 | } | |
e9f8a0b6 | 2358 | |
27ec41d3 | 2359 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2360 | } |
2361 | ||
2362 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2363 | { | |
2364 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2365 | ||
2366 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2367 | slb_flts += (ctx->spu->stats.slb_flt - | |
2368 | ctx->stats.slb_flt_base); | |
2369 | } | |
2370 | ||
2371 | return slb_flts; | |
2372 | } | |
2373 | ||
2374 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2375 | { | |
2376 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2377 | ||
2378 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2379 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2380 | ctx->stats.class2_intr_base); | |
2381 | } | |
2382 | ||
2383 | return class2_intrs; | |
2384 | } | |
2385 | ||
2386 | ||
2387 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2388 | { | |
2389 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2390 | int ret; |
2391 | ||
2392 | ret = spu_acquire(ctx); | |
2393 | if (ret) | |
2394 | return ret; | |
e9f8a0b6 | 2395 | |
e9f8a0b6 CH |
2396 | seq_printf(s, "%s %llu %llu %llu %llu " |
2397 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2398 | ctx_state_names[ctx->stats.util_state], |
2399 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2400 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2401 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2402 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2403 | ctx->stats.vol_ctx_switch, |
2404 | ctx->stats.invol_ctx_switch, | |
2405 | spufs_slb_flts(ctx), | |
2406 | ctx->stats.hash_flt, | |
2407 | ctx->stats.min_flt, | |
2408 | ctx->stats.maj_flt, | |
2409 | spufs_class2_intrs(ctx), | |
2410 | ctx->stats.libassist); | |
2411 | spu_release(ctx); | |
2412 | return 0; | |
2413 | } | |
2414 | ||
2415 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2416 | { | |
2417 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2418 | } | |
2419 | ||
2420 | static const struct file_operations spufs_stat_fops = { | |
2421 | .open = spufs_stat_open, | |
2422 | .read = seq_read, | |
2423 | .llseek = seq_lseek, | |
2424 | .release = single_release, | |
2425 | }; | |
2426 | ||
5158e9b5 CH |
2427 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2428 | { | |
2429 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2430 | SWITCH_LOG_BUFSIZE; | |
2431 | } | |
2432 | ||
2433 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2434 | { | |
2435 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2436 | } | |
2437 | ||
2438 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2439 | { | |
2440 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2441 | int rc; |
2442 | ||
2443 | rc = spu_acquire(ctx); | |
2444 | if (rc) | |
2445 | return rc; | |
5158e9b5 | 2446 | |
5158e9b5 | 2447 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2448 | rc = -EBUSY; |
2449 | goto out; | |
5158e9b5 | 2450 | } |
f5ed0eb6 | 2451 | |
837ef884 | 2452 | ctx->switch_log = kmalloc(sizeof(struct switch_log) + |
f5ed0eb6 JK |
2453 | SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry), |
2454 | GFP_KERNEL); | |
2455 | ||
2456 | if (!ctx->switch_log) { | |
2457 | rc = -ENOMEM; | |
2458 | goto out; | |
2459 | } | |
2460 | ||
837ef884 | 2461 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2462 | init_waitqueue_head(&ctx->switch_log->wait); |
2463 | rc = 0; | |
2464 | ||
2465 | out: | |
2466 | spu_release(ctx); | |
2467 | return rc; | |
2468 | } | |
2469 | ||
2470 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2471 | { | |
2472 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2473 | int rc; | |
2474 | ||
2475 | rc = spu_acquire(ctx); | |
2476 | if (rc) | |
2477 | return rc; | |
2478 | ||
2479 | kfree(ctx->switch_log); | |
2480 | ctx->switch_log = NULL; | |
2481 | spu_release(ctx); | |
5158e9b5 CH |
2482 | |
2483 | return 0; | |
5158e9b5 CH |
2484 | } |
2485 | ||
2486 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2487 | { | |
2488 | struct switch_log_entry *p; | |
2489 | ||
2490 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2491 | ||
2492 | return snprintf(tbuf, n, "%u.%09u %d %u %u %llu\n", | |
2493 | (unsigned int) p->tstamp.tv_sec, | |
2494 | (unsigned int) p->tstamp.tv_nsec, | |
2495 | p->spu_id, | |
2496 | (unsigned int) p->type, | |
2497 | (unsigned int) p->val, | |
2498 | (unsigned long long) p->timebase); | |
2499 | } | |
2500 | ||
2501 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2502 | size_t len, loff_t *ppos) | |
2503 | { | |
496ad9aa | 2504 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2505 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2506 | int error = 0, cnt = 0; | |
2507 | ||
17e37675 | 2508 | if (!buf) |
5158e9b5 CH |
2509 | return -EINVAL; |
2510 | ||
f5ed0eb6 JK |
2511 | error = spu_acquire(ctx); |
2512 | if (error) | |
2513 | return error; | |
2514 | ||
5158e9b5 CH |
2515 | while (cnt < len) { |
2516 | char tbuf[128]; | |
2517 | int width; | |
2518 | ||
14f693ee JK |
2519 | if (spufs_switch_log_used(ctx) == 0) { |
2520 | if (cnt > 0) { | |
2521 | /* If there's data ready to go, we can | |
2522 | * just return straight away */ | |
2523 | break; | |
2524 | ||
2525 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2526 | error = -EAGAIN; |
2527 | break; | |
14f693ee JK |
2528 | |
2529 | } else { | |
2530 | /* spufs_wait will drop the mutex and | |
2531 | * re-acquire, but since we're in read(), the | |
2532 | * file cannot be _released (and so | |
2533 | * ctx->switch_log is stable). | |
2534 | */ | |
2535 | error = spufs_wait(ctx->switch_log->wait, | |
2536 | spufs_switch_log_used(ctx) > 0); | |
2537 | ||
2538 | /* On error, spufs_wait returns without the | |
2539 | * state mutex held */ | |
2540 | if (error) | |
2541 | return error; | |
2542 | ||
2543 | /* We may have had entries read from underneath | |
2544 | * us while we dropped the mutex in spufs_wait, | |
2545 | * so re-check */ | |
2546 | if (spufs_switch_log_used(ctx) == 0) | |
2547 | continue; | |
f5ed0eb6 | 2548 | } |
5158e9b5 CH |
2549 | } |
2550 | ||
5158e9b5 | 2551 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2552 | if (width < len) |
5158e9b5 CH |
2553 | ctx->switch_log->tail = |
2554 | (ctx->switch_log->tail + 1) % | |
2555 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2556 | else |
2557 | /* If the record is greater than space available return | |
2558 | * partial buffer (so far) */ | |
5158e9b5 CH |
2559 | break; |
2560 | ||
2561 | error = copy_to_user(buf + cnt, tbuf, width); | |
2562 | if (error) | |
2563 | break; | |
2564 | cnt += width; | |
2565 | } | |
2566 | ||
f5ed0eb6 JK |
2567 | spu_release(ctx); |
2568 | ||
5158e9b5 CH |
2569 | return cnt == 0 ? error : cnt; |
2570 | } | |
2571 | ||
2572 | static unsigned int spufs_switch_log_poll(struct file *file, poll_table *wait) | |
2573 | { | |
496ad9aa | 2574 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2575 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2576 | unsigned int mask = 0; | |
f5ed0eb6 | 2577 | int rc; |
5158e9b5 CH |
2578 | |
2579 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2580 | ||
f5ed0eb6 JK |
2581 | rc = spu_acquire(ctx); |
2582 | if (rc) | |
2583 | return rc; | |
2584 | ||
5158e9b5 CH |
2585 | if (spufs_switch_log_used(ctx) > 0) |
2586 | mask |= POLLIN; | |
2587 | ||
f5ed0eb6 JK |
2588 | spu_release(ctx); |
2589 | ||
5158e9b5 CH |
2590 | return mask; |
2591 | } | |
2592 | ||
2593 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2594 | .owner = THIS_MODULE, |
2595 | .open = spufs_switch_log_open, | |
2596 | .read = spufs_switch_log_read, | |
2597 | .poll = spufs_switch_log_poll, | |
2598 | .release = spufs_switch_log_release, | |
fc15351d | 2599 | .llseek = no_llseek, |
5158e9b5 CH |
2600 | }; |
2601 | ||
f5ed0eb6 JK |
2602 | /** |
2603 | * Log a context switch event to a switch log reader. | |
2604 | * | |
2605 | * Must be called with ctx->state_mutex held. | |
2606 | */ | |
5158e9b5 CH |
2607 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2608 | u32 type, u32 val) | |
2609 | { | |
2610 | if (!ctx->switch_log) | |
2611 | return; | |
2612 | ||
5158e9b5 CH |
2613 | if (spufs_switch_log_avail(ctx) > 1) { |
2614 | struct switch_log_entry *p; | |
2615 | ||
2616 | p = ctx->switch_log->log + ctx->switch_log->head; | |
2617 | ktime_get_ts(&p->tstamp); | |
2618 | p->timebase = get_tb(); | |
2619 | p->spu_id = spu ? spu->number : -1; | |
2620 | p->type = type; | |
2621 | p->val = val; | |
2622 | ||
2623 | ctx->switch_log->head = | |
2624 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2625 | } | |
5158e9b5 CH |
2626 | |
2627 | wake_up(&ctx->switch_log->wait); | |
2628 | } | |
e9f8a0b6 | 2629 | |
46deed69 LB |
2630 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2631 | { | |
2632 | struct spu_context *ctx = s->private; | |
2633 | u64 mfc_control_RW; | |
2634 | ||
2635 | mutex_lock(&ctx->state_mutex); | |
2636 | if (ctx->spu) { | |
2637 | struct spu *spu = ctx->spu; | |
2638 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2639 | ||
2640 | spin_lock_irq(&spu->register_lock); | |
2641 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2642 | spin_unlock_irq(&spu->register_lock); | |
2643 | } else { | |
2644 | struct spu_state *csa = &ctx->csa; | |
2645 | ||
2646 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2647 | } | |
2648 | ||
2649 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2650 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2651 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2652 | ctx->flags, | |
2653 | ctx->sched_flags, | |
2654 | ctx->prio, | |
2655 | ctx->time_slice, | |
2656 | ctx->spu ? ctx->spu->number : -1, | |
2657 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2658 | ctx->csa.class_0_pending, | |
2659 | ctx->csa.class_0_dar, | |
2660 | ctx->csa.class_1_dsisr, | |
2661 | mfc_control_RW, | |
2662 | ctx->ops->runcntl_read(ctx), | |
2663 | ctx->ops->status_read(ctx)); | |
2664 | ||
2665 | mutex_unlock(&ctx->state_mutex); | |
2666 | ||
2667 | return 0; | |
2668 | } | |
2669 | ||
2670 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2671 | { | |
2672 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2673 | } | |
2674 | ||
2675 | static const struct file_operations spufs_ctx_fops = { | |
2676 | .open = spufs_ctx_open, | |
2677 | .read = seq_read, | |
2678 | .llseek = seq_lseek, | |
2679 | .release = single_release, | |
2680 | }; | |
2681 | ||
74254647 | 2682 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2683 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2684 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2685 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2686 | { "mbox", &spufs_mbox_fops, 0444, }, |
2687 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2688 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2689 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2690 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2691 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2692 | { "signal1", &spufs_signal1_fops, 0666, }, |
2693 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2694 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2695 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2696 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2697 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2698 | { "lslr", &spufs_lslr_ops, 0444, }, |
2699 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2700 | { "mss", &spufs_mss_fops, 0666, }, | |
2701 | { "npc", &spufs_npc_ops, 0666, }, | |
2702 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2703 | { "decr", &spufs_decr_ops, 0666, }, |
2704 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2705 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2706 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2707 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2708 | { "phys-id", &spufs_id_ops, 0666, }, |
2709 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2710 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2711 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2712 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2713 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2714 | sizeof(struct spu_dma_info), }, | |
2715 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2716 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2717 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2718 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2719 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2720 | {}, |
2721 | }; | |
5737edd1 | 2722 | |
74254647 | 2723 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2724 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2725 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2726 | { "mbox", &spufs_mbox_fops, 0444, }, |
2727 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2728 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2729 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2730 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2731 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2732 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2733 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2734 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2735 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2736 | { "mss", &spufs_mss_fops, 0666, }, | |
2737 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2738 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2739 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2740 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2741 | { "phys-id", &spufs_id_ops, 0666, }, |
2742 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2743 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2744 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2745 | {}, |
2746 | }; | |
2747 | ||
74254647 | 2748 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2749 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2750 | {}, |
2751 | }; | |
bf1ab978 | 2752 | |
74254647 | 2753 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2754 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2755 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2756 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2757 | { "decr", NULL, spufs_decr_get, 19 }, | |
2758 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2759 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2760 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2761 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2762 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2763 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2764 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2765 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2766 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2767 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2768 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2769 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2770 | { "proxydma_info", __spufs_proxydma_info_read, | |
2771 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2772 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2773 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2774 | { NULL }, |
bf1ab978 | 2775 | }; |