Commit | Line | Data |
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de6cc651 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
67207b96 AB |
2 | /* |
3 | * SPU file system -- file contents | |
4 | * | |
5 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 | |
6 | * | |
7 | * Author: Arnd Bergmann <arndb@de.ibm.com> | |
67207b96 AB |
8 | */ |
9 | ||
a33a7d73 AB |
10 | #undef DEBUG |
11 | ||
5456ffde | 12 | #include <linux/coredump.h> |
67207b96 AB |
13 | #include <linux/fs.h> |
14 | #include <linux/ioctl.h> | |
4b16f8e2 | 15 | #include <linux/export.h> |
d88cfffa | 16 | #include <linux/pagemap.h> |
67207b96 | 17 | #include <linux/poll.h> |
5110459f | 18 | #include <linux/ptrace.h> |
cbe709c1 | 19 | #include <linux/seq_file.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
67207b96 AB |
21 | |
22 | #include <asm/io.h> | |
dfe1e09f | 23 | #include <asm/time.h> |
67207b96 | 24 | #include <asm/spu.h> |
b9e3bd77 | 25 | #include <asm/spu_info.h> |
7c0f6ba6 | 26 | #include <linux/uaccess.h> |
67207b96 AB |
27 | |
28 | #include "spufs.h" | |
ae142e0c | 29 | #include "sputrace.h" |
67207b96 | 30 | |
27d5bf2a BH |
31 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
32 | ||
197b1a82 CH |
33 | /* Simple attribute files */ |
34 | struct spufs_attr { | |
35 | int (*get)(void *, u64 *); | |
36 | int (*set)(void *, u64); | |
37 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
38 | char set_buf[24]; | |
39 | void *data; | |
40 | const char *fmt; /* format for read operation */ | |
41 | struct mutex mutex; /* protects access to these buffers */ | |
42 | }; | |
43 | ||
44 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
45 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
46 | const char *fmt) | |
47 | { | |
48 | struct spufs_attr *attr; | |
49 | ||
50 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
51 | if (!attr) | |
52 | return -ENOMEM; | |
53 | ||
54 | attr->get = get; | |
55 | attr->set = set; | |
56 | attr->data = inode->i_private; | |
57 | attr->fmt = fmt; | |
58 | mutex_init(&attr->mutex); | |
59 | file->private_data = attr; | |
60 | ||
61 | return nonseekable_open(inode, file); | |
62 | } | |
63 | ||
64 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
65 | { | |
66 | kfree(file->private_data); | |
67 | return 0; | |
68 | } | |
69 | ||
70 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
71 | size_t len, loff_t *ppos) | |
72 | { | |
73 | struct spufs_attr *attr; | |
74 | size_t size; | |
75 | ssize_t ret; | |
76 | ||
77 | attr = file->private_data; | |
78 | if (!attr->get) | |
79 | return -EACCES; | |
80 | ||
81 | ret = mutex_lock_interruptible(&attr->mutex); | |
82 | if (ret) | |
83 | return ret; | |
84 | ||
85 | if (*ppos) { /* continued read */ | |
86 | size = strlen(attr->get_buf); | |
87 | } else { /* first read */ | |
88 | u64 val; | |
89 | ret = attr->get(attr->data, &val); | |
90 | if (ret) | |
91 | goto out; | |
92 | ||
93 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
94 | attr->fmt, (unsigned long long)val); | |
95 | } | |
96 | ||
97 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
98 | out: | |
99 | mutex_unlock(&attr->mutex); | |
100 | return ret; | |
101 | } | |
102 | ||
103 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
104 | size_t len, loff_t *ppos) | |
105 | { | |
106 | struct spufs_attr *attr; | |
107 | u64 val; | |
108 | size_t size; | |
109 | ssize_t ret; | |
110 | ||
111 | attr = file->private_data; | |
112 | if (!attr->set) | |
113 | return -EACCES; | |
114 | ||
115 | ret = mutex_lock_interruptible(&attr->mutex); | |
116 | if (ret) | |
117 | return ret; | |
118 | ||
119 | ret = -EFAULT; | |
120 | size = min(sizeof(attr->set_buf) - 1, len); | |
121 | if (copy_from_user(attr->set_buf, buf, size)) | |
122 | goto out; | |
123 | ||
124 | ret = len; /* claim we got the whole input */ | |
125 | attr->set_buf[size] = '\0'; | |
126 | val = simple_strtol(attr->set_buf, NULL, 0); | |
127 | attr->set(attr->data, val); | |
128 | out: | |
129 | mutex_unlock(&attr->mutex); | |
130 | return ret; | |
131 | } | |
132 | ||
5456ffde CH |
133 | static ssize_t spufs_dump_emit(struct coredump_params *cprm, void *buf, |
134 | size_t size) | |
135 | { | |
136 | if (!dump_emit(cprm, buf, size)) | |
137 | return -EIO; | |
138 | return size; | |
139 | } | |
140 | ||
197b1a82 CH |
141 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ |
142 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
143 | { \ | |
144 | __simple_attr_check_format(__fmt, 0ull); \ | |
145 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
146 | } \ | |
828c0950 | 147 | static const struct file_operations __fops = { \ |
197b1a82 CH |
148 | .open = __fops ## _open, \ |
149 | .release = spufs_attr_release, \ | |
150 | .read = spufs_attr_read, \ | |
151 | .write = spufs_attr_write, \ | |
fc15351d | 152 | .llseek = generic_file_llseek, \ |
197b1a82 CH |
153 | }; |
154 | ||
cbe709c1 | 155 | |
67207b96 AB |
156 | static int |
157 | spufs_mem_open(struct inode *inode, struct file *file) | |
158 | { | |
159 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 160 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 161 | |
47d3a5fa | 162 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 163 | file->private_data = ctx; |
43c2bbd9 CH |
164 | if (!i->i_openers++) |
165 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 166 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
167 | return 0; |
168 | } | |
169 | ||
170 | static int | |
171 | spufs_mem_release(struct inode *inode, struct file *file) | |
172 | { | |
173 | struct spufs_inode_info *i = SPUFS_I(inode); | |
174 | struct spu_context *ctx = i->i_ctx; | |
175 | ||
47d3a5fa | 176 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
177 | if (!--i->i_openers) |
178 | ctx->local_store = NULL; | |
47d3a5fa | 179 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
180 | return 0; |
181 | } | |
182 | ||
bf1ab978 | 183 | static ssize_t |
5456ffde | 184 | spufs_mem_dump(struct spu_context *ctx, struct coredump_params *cprm) |
bf1ab978 | 185 | { |
5456ffde | 186 | return spufs_dump_emit(cprm, ctx->ops->get_ls(ctx), LS_SIZE); |
bf1ab978 DGM |
187 | } |
188 | ||
67207b96 AB |
189 | static ssize_t |
190 | spufs_mem_read(struct file *file, char __user *buffer, | |
191 | size_t size, loff_t *pos) | |
192 | { | |
bf1ab978 | 193 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 194 | ssize_t ret; |
67207b96 | 195 | |
c9101bdb CH |
196 | ret = spu_acquire(ctx); |
197 | if (ret) | |
198 | return ret; | |
5456ffde CH |
199 | ret = simple_read_from_buffer(buffer, size, pos, ctx->ops->get_ls(ctx), |
200 | LS_SIZE); | |
8b3d6663 | 201 | spu_release(ctx); |
c9101bdb | 202 | |
67207b96 AB |
203 | return ret; |
204 | } | |
205 | ||
206 | static ssize_t | |
207 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 208 | size_t size, loff_t *ppos) |
67207b96 AB |
209 | { |
210 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 211 | char *local_store; |
aa0ed2bd | 212 | loff_t pos = *ppos; |
8b3d6663 | 213 | int ret; |
67207b96 | 214 | |
aa0ed2bd | 215 | if (pos > LS_SIZE) |
67207b96 | 216 | return -EFBIG; |
8b3d6663 | 217 | |
c9101bdb CH |
218 | ret = spu_acquire(ctx); |
219 | if (ret) | |
220 | return ret; | |
221 | ||
8b3d6663 | 222 | local_store = ctx->ops->get_ls(ctx); |
63c3b9d7 | 223 | size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); |
8b3d6663 | 224 | spu_release(ctx); |
aa0ed2bd | 225 | |
aa0ed2bd | 226 | return size; |
67207b96 AB |
227 | } |
228 | ||
e807f02c | 229 | static vm_fault_t |
11bac800 | 230 | spufs_mem_mmap_fault(struct vm_fault *vmf) |
8b3d6663 | 231 | { |
11bac800 | 232 | struct vm_area_struct *vma = vmf->vma; |
f1fa74f4 | 233 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 234 | unsigned long pfn, offset; |
e807f02c | 235 | vm_fault_t ret; |
b1e2270f | 236 | |
b1e2270f | 237 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 238 | if (offset >= LS_SIZE) |
b1e2270f | 239 | return VM_FAULT_SIGBUS; |
128b8546 | 240 | |
b1e2270f | 241 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
1a29d85e | 242 | vmf->address, offset); |
f1fa74f4 | 243 | |
c9101bdb | 244 | if (spu_acquire(ctx)) |
b1e2270f | 245 | return VM_FAULT_NOPAGE; |
8b3d6663 | 246 | |
ac91cb8d | 247 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 248 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 249 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 250 | } else { |
64b3d0e8 | 251 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 252 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 253 | } |
e807f02c | 254 | ret = vmf_insert_pfn(vma, vmf->address, pfn); |
8b3d6663 | 255 | |
78bde53e | 256 | spu_release(ctx); |
8b3d6663 | 257 | |
e807f02c | 258 | return ret; |
8b3d6663 AB |
259 | } |
260 | ||
a352894d BH |
261 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
262 | unsigned long address, | |
263 | void *buf, int len, int write) | |
264 | { | |
265 | struct spu_context *ctx = vma->vm_file->private_data; | |
266 | unsigned long offset = address - vma->vm_start; | |
267 | char *local_store; | |
268 | ||
269 | if (write && !(vma->vm_flags & VM_WRITE)) | |
270 | return -EACCES; | |
271 | if (spu_acquire(ctx)) | |
272 | return -EINTR; | |
273 | if ((offset + len) > vma->vm_end) | |
274 | len = vma->vm_end - offset; | |
275 | local_store = ctx->ops->get_ls(ctx); | |
276 | if (write) | |
277 | memcpy_toio(local_store + offset, buf, len); | |
278 | else | |
279 | memcpy_fromio(buf, local_store + offset, len); | |
280 | spu_release(ctx); | |
281 | return len; | |
282 | } | |
78bde53e | 283 | |
f0f37e2f | 284 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 285 | .fault = spufs_mem_mmap_fault, |
a352894d | 286 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
287 | }; |
288 | ||
f1fa74f4 | 289 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 290 | { |
8b3d6663 AB |
291 | if (!(vma->vm_flags & VM_SHARED)) |
292 | return -EINVAL; | |
67207b96 | 293 | |
1c71222e | 294 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 295 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
296 | |
297 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
298 | return 0; |
299 | } | |
300 | ||
5dfe4c96 | 301 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
302 | .open = spufs_mem_open, |
303 | .release = spufs_mem_release, | |
304 | .read = spufs_mem_read, | |
305 | .write = spufs_mem_write, | |
306 | .llseek = generic_file_llseek, | |
307 | .mmap = spufs_mem_mmap, | |
8b3d6663 AB |
308 | }; |
309 | ||
e807f02c | 310 | static vm_fault_t spufs_ps_fault(struct vm_fault *vmf, |
78bde53e | 311 | unsigned long ps_offs, |
27d5bf2a | 312 | unsigned long ps_size) |
6df10a82 | 313 | { |
11bac800 | 314 | struct spu_context *ctx = vmf->vma->vm_file->private_data; |
b1e2270f | 315 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
e807f02c SJ |
316 | int err = 0; |
317 | vm_fault_t ret = VM_FAULT_NOPAGE; | |
6df10a82 | 318 | |
b1e2270f | 319 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 320 | |
27d5bf2a | 321 | if (offset >= ps_size) |
b1e2270f | 322 | return VM_FAULT_SIGBUS; |
6df10a82 | 323 | |
60657263 JK |
324 | if (fatal_signal_pending(current)) |
325 | return VM_FAULT_SIGBUS; | |
326 | ||
d5883137 | 327 | /* |
c1e8d7c6 | 328 | * Because we release the mmap_lock, the context may be destroyed while |
d5883137 JK |
329 | * we're in spu_wait. Grab an extra reference so it isn't destroyed |
330 | * in the meantime. | |
331 | */ | |
332 | get_spu_context(ctx); | |
333 | ||
33bfd7a7 AB |
334 | /* |
335 | * We have to wait for context to be loaded before we have | |
336 | * pages to hand out to the user, but we don't want to wait | |
c1e8d7c6 ML |
337 | * with the mmap_lock held. |
338 | * It is possible to drop the mmap_lock here, but then we need | |
b1e2270f | 339 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 340 | * hanged. |
78bde53e | 341 | */ |
c9101bdb | 342 | if (spu_acquire(ctx)) |
d5883137 | 343 | goto refault; |
c9101bdb | 344 | |
33bfd7a7 | 345 | if (ctx->state == SPU_STATE_SAVED) { |
d8ed45c5 | 346 | mmap_read_unlock(current->mm); |
b1e2270f | 347 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
e807f02c | 348 | err = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 349 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
d8ed45c5 | 350 | mmap_read_lock(current->mm); |
c9101bdb CH |
351 | } else { |
352 | area = ctx->spu->problem_phys + ps_offs; | |
e807f02c SJ |
353 | ret = vmf_insert_pfn(vmf->vma, vmf->address, |
354 | (area + offset) >> PAGE_SHIFT); | |
b1e2270f | 355 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); |
33bfd7a7 | 356 | } |
6df10a82 | 357 | |
e807f02c | 358 | if (!err) |
eebead5b | 359 | spu_release(ctx); |
d5883137 JK |
360 | |
361 | refault: | |
362 | put_spu_context(ctx); | |
e807f02c | 363 | return ret; |
6df10a82 MN |
364 | } |
365 | ||
27d5bf2a | 366 | #if SPUFS_MMAP_4K |
e807f02c | 367 | static vm_fault_t spufs_cntl_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 368 | { |
11bac800 | 369 | return spufs_ps_fault(vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
370 | } |
371 | ||
f0f37e2f | 372 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 373 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
374 | }; |
375 | ||
376 | /* | |
377 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
378 | */ |
379 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
380 | { | |
381 | if (!(vma->vm_flags & VM_SHARED)) | |
382 | return -EINVAL; | |
383 | ||
1c71222e | 384 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 385 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
386 | |
387 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
388 | return 0; | |
389 | } | |
27d5bf2a BH |
390 | #else /* SPUFS_MMAP_4K */ |
391 | #define spufs_cntl_mmap NULL | |
392 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 393 | |
197b1a82 | 394 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 395 | { |
e1dbff2b | 396 | struct spu_context *ctx = data; |
c9101bdb | 397 | int ret; |
6df10a82 | 398 | |
c9101bdb CH |
399 | ret = spu_acquire(ctx); |
400 | if (ret) | |
401 | return ret; | |
197b1a82 | 402 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
403 | spu_release(ctx); |
404 | ||
197b1a82 | 405 | return 0; |
6df10a82 MN |
406 | } |
407 | ||
197b1a82 | 408 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 409 | { |
e1dbff2b | 410 | struct spu_context *ctx = data; |
c9101bdb | 411 | int ret; |
e1dbff2b | 412 | |
c9101bdb CH |
413 | ret = spu_acquire(ctx); |
414 | if (ret) | |
415 | return ret; | |
e1dbff2b AB |
416 | ctx->ops->runcntl_write(ctx, val); |
417 | spu_release(ctx); | |
197b1a82 CH |
418 | |
419 | return 0; | |
6df10a82 MN |
420 | } |
421 | ||
e1dbff2b | 422 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 423 | { |
e1dbff2b AB |
424 | struct spufs_inode_info *i = SPUFS_I(inode); |
425 | struct spu_context *ctx = i->i_ctx; | |
426 | ||
47d3a5fa | 427 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 428 | file->private_data = ctx; |
43c2bbd9 CH |
429 | if (!i->i_openers++) |
430 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 431 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 432 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 433 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
434 | } |
435 | ||
43c2bbd9 CH |
436 | static int |
437 | spufs_cntl_release(struct inode *inode, struct file *file) | |
438 | { | |
439 | struct spufs_inode_info *i = SPUFS_I(inode); | |
440 | struct spu_context *ctx = i->i_ctx; | |
441 | ||
74bedc4d | 442 | simple_attr_release(inode, file); |
43c2bbd9 | 443 | |
47d3a5fa | 444 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
445 | if (!--i->i_openers) |
446 | ctx->cntl = NULL; | |
47d3a5fa | 447 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
448 | return 0; |
449 | } | |
450 | ||
5dfe4c96 | 451 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 452 | .open = spufs_cntl_open, |
43c2bbd9 | 453 | .release = spufs_cntl_release, |
8b88b099 CH |
454 | .read = simple_attr_read, |
455 | .write = simple_attr_write, | |
658829df | 456 | .llseek = no_llseek, |
6df10a82 | 457 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
458 | }; |
459 | ||
8b3d6663 AB |
460 | static int |
461 | spufs_regs_open(struct inode *inode, struct file *file) | |
462 | { | |
463 | struct spufs_inode_info *i = SPUFS_I(inode); | |
464 | file->private_data = i->i_ctx; | |
465 | return 0; | |
466 | } | |
467 | ||
bf1ab978 | 468 | static ssize_t |
5456ffde | 469 | spufs_regs_dump(struct spu_context *ctx, struct coredump_params *cprm) |
bf1ab978 | 470 | { |
5456ffde CH |
471 | return spufs_dump_emit(cprm, ctx->csa.lscsa->gprs, |
472 | sizeof(ctx->csa.lscsa->gprs)); | |
bf1ab978 DGM |
473 | } |
474 | ||
8b3d6663 AB |
475 | static ssize_t |
476 | spufs_regs_read(struct file *file, char __user *buffer, | |
477 | size_t size, loff_t *pos) | |
478 | { | |
8b3d6663 | 479 | int ret; |
bf1ab978 | 480 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 481 | |
f027faa2 JK |
482 | /* pre-check for file position: if we'd return EOF, there's no point |
483 | * causing a deschedule */ | |
484 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
485 | return 0; | |
486 | ||
c9101bdb CH |
487 | ret = spu_acquire_saved(ctx); |
488 | if (ret) | |
489 | return ret; | |
5456ffde CH |
490 | ret = simple_read_from_buffer(buffer, size, pos, ctx->csa.lscsa->gprs, |
491 | sizeof(ctx->csa.lscsa->gprs)); | |
27b1ea09 | 492 | spu_release_saved(ctx); |
8b3d6663 AB |
493 | return ret; |
494 | } | |
495 | ||
496 | static ssize_t | |
497 | spufs_regs_write(struct file *file, const char __user *buffer, | |
498 | size_t size, loff_t *pos) | |
499 | { | |
500 | struct spu_context *ctx = file->private_data; | |
501 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
502 | int ret; | |
503 | ||
d219889b | 504 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 505 | return -EFBIG; |
d219889b | 506 | |
c9101bdb CH |
507 | ret = spu_acquire_saved(ctx); |
508 | if (ret) | |
509 | return ret; | |
8b3d6663 | 510 | |
63c3b9d7 AM |
511 | size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, |
512 | buffer, size); | |
8b3d6663 | 513 | |
27b1ea09 | 514 | spu_release_saved(ctx); |
63c3b9d7 | 515 | return size; |
8b3d6663 AB |
516 | } |
517 | ||
5dfe4c96 | 518 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
519 | .open = spufs_regs_open, |
520 | .read = spufs_regs_read, | |
521 | .write = spufs_regs_write, | |
67207b96 AB |
522 | .llseek = generic_file_llseek, |
523 | }; | |
524 | ||
bf1ab978 | 525 | static ssize_t |
5456ffde | 526 | spufs_fpcr_dump(struct spu_context *ctx, struct coredump_params *cprm) |
bf1ab978 | 527 | { |
5456ffde CH |
528 | return spufs_dump_emit(cprm, &ctx->csa.lscsa->fpcr, |
529 | sizeof(ctx->csa.lscsa->fpcr)); | |
bf1ab978 DGM |
530 | } |
531 | ||
8b3d6663 AB |
532 | static ssize_t |
533 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
534 | size_t size, loff_t * pos) | |
535 | { | |
8b3d6663 | 536 | int ret; |
bf1ab978 | 537 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 538 | |
c9101bdb CH |
539 | ret = spu_acquire_saved(ctx); |
540 | if (ret) | |
541 | return ret; | |
5456ffde CH |
542 | ret = simple_read_from_buffer(buffer, size, pos, &ctx->csa.lscsa->fpcr, |
543 | sizeof(ctx->csa.lscsa->fpcr)); | |
27b1ea09 | 544 | spu_release_saved(ctx); |
8b3d6663 AB |
545 | return ret; |
546 | } | |
547 | ||
548 | static ssize_t | |
549 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
550 | size_t size, loff_t * pos) | |
551 | { | |
552 | struct spu_context *ctx = file->private_data; | |
553 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
554 | int ret; | |
555 | ||
d219889b | 556 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 557 | return -EFBIG; |
8b3d6663 | 558 | |
c9101bdb CH |
559 | ret = spu_acquire_saved(ctx); |
560 | if (ret) | |
561 | return ret; | |
8b3d6663 | 562 | |
63c3b9d7 AM |
563 | size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, |
564 | buffer, size); | |
8b3d6663 | 565 | |
27b1ea09 | 566 | spu_release_saved(ctx); |
63c3b9d7 | 567 | return size; |
8b3d6663 AB |
568 | } |
569 | ||
5dfe4c96 | 570 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
571 | .open = spufs_regs_open, |
572 | .read = spufs_fpcr_read, | |
573 | .write = spufs_fpcr_write, | |
574 | .llseek = generic_file_llseek, | |
575 | }; | |
576 | ||
67207b96 AB |
577 | /* generic open function for all pipe-like files */ |
578 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
579 | { | |
580 | struct spufs_inode_info *i = SPUFS_I(inode); | |
581 | file->private_data = i->i_ctx; | |
582 | ||
c5bf68fe | 583 | return stream_open(inode, file); |
67207b96 AB |
584 | } |
585 | ||
cdcc89bb AB |
586 | /* |
587 | * Read as many bytes from the mailbox as possible, until | |
588 | * one of the conditions becomes true: | |
589 | * | |
590 | * - no more data available in the mailbox | |
591 | * - end of the user provided buffer | |
592 | * - end of the mapped area | |
593 | */ | |
67207b96 AB |
594 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
595 | size_t len, loff_t *pos) | |
596 | { | |
8b3d6663 | 597 | struct spu_context *ctx = file->private_data; |
6904d3d0 | 598 | u32 mbox_data, __user *udata = (void __user *)buf; |
cdcc89bb | 599 | ssize_t count; |
67207b96 AB |
600 | |
601 | if (len < 4) | |
602 | return -EINVAL; | |
603 | ||
c9101bdb CH |
604 | count = spu_acquire(ctx); |
605 | if (count) | |
606 | return count; | |
607 | ||
274cef5e | 608 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
cdcc89bb AB |
609 | int ret; |
610 | ret = ctx->ops->mbox_read(ctx, &mbox_data); | |
611 | if (ret == 0) | |
612 | break; | |
613 | ||
614 | /* | |
615 | * at the end of the mapped area, we can fault | |
616 | * but still need to return the data we have | |
617 | * read successfully so far. | |
618 | */ | |
6904d3d0 | 619 | ret = put_user(mbox_data, udata); |
cdcc89bb AB |
620 | if (ret) { |
621 | if (!count) | |
622 | count = -EFAULT; | |
623 | break; | |
624 | } | |
625 | } | |
8b3d6663 | 626 | spu_release(ctx); |
67207b96 | 627 | |
cdcc89bb AB |
628 | if (!count) |
629 | count = -EAGAIN; | |
67207b96 | 630 | |
cdcc89bb | 631 | return count; |
67207b96 AB |
632 | } |
633 | ||
5dfe4c96 | 634 | static const struct file_operations spufs_mbox_fops = { |
67207b96 AB |
635 | .open = spufs_pipe_open, |
636 | .read = spufs_mbox_read, | |
fc15351d | 637 | .llseek = no_llseek, |
67207b96 AB |
638 | }; |
639 | ||
640 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, | |
641 | size_t len, loff_t *pos) | |
642 | { | |
8b3d6663 | 643 | struct spu_context *ctx = file->private_data; |
c9101bdb | 644 | ssize_t ret; |
67207b96 AB |
645 | u32 mbox_stat; |
646 | ||
647 | if (len < 4) | |
648 | return -EINVAL; | |
649 | ||
c9101bdb CH |
650 | ret = spu_acquire(ctx); |
651 | if (ret) | |
652 | return ret; | |
8b3d6663 AB |
653 | |
654 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; | |
655 | ||
656 | spu_release(ctx); | |
67207b96 AB |
657 | |
658 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) | |
659 | return -EFAULT; | |
660 | ||
661 | return 4; | |
662 | } | |
663 | ||
5dfe4c96 | 664 | static const struct file_operations spufs_mbox_stat_fops = { |
67207b96 AB |
665 | .open = spufs_pipe_open, |
666 | .read = spufs_mbox_stat_read, | |
fc15351d | 667 | .llseek = no_llseek, |
67207b96 AB |
668 | }; |
669 | ||
670 | /* low-level ibox access function */ | |
8b3d6663 | 671 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
67207b96 | 672 | { |
8b3d6663 AB |
673 | return ctx->ops->ibox_read(ctx, data); |
674 | } | |
67207b96 | 675 | |
8b3d6663 AB |
676 | /* interrupt-level ibox callback function. */ |
677 | void spufs_ibox_callback(struct spu *spu) | |
67207b96 | 678 | { |
8b3d6663 AB |
679 | struct spu_context *ctx = spu->ctx; |
680 | ||
7d7be3aa AV |
681 | if (ctx) |
682 | wake_up_all(&ctx->ibox_wq); | |
67207b96 AB |
683 | } |
684 | ||
cdcc89bb AB |
685 | /* |
686 | * Read as many bytes from the interrupt mailbox as possible, until | |
687 | * one of the conditions becomes true: | |
688 | * | |
689 | * - no more data available in the mailbox | |
690 | * - end of the user provided buffer | |
691 | * - end of the mapped area | |
692 | * | |
693 | * If the file is opened without O_NONBLOCK, we wait here until | |
694 | * any data is available, but return when we have been able to | |
695 | * read something. | |
696 | */ | |
67207b96 AB |
697 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
698 | size_t len, loff_t *pos) | |
699 | { | |
8b3d6663 | 700 | struct spu_context *ctx = file->private_data; |
6904d3d0 | 701 | u32 ibox_data, __user *udata = (void __user *)buf; |
cdcc89bb | 702 | ssize_t count; |
67207b96 AB |
703 | |
704 | if (len < 4) | |
705 | return -EINVAL; | |
706 | ||
c9101bdb CH |
707 | count = spu_acquire(ctx); |
708 | if (count) | |
eebead5b | 709 | goto out; |
67207b96 | 710 | |
cdcc89bb AB |
711 | /* wait only for the first element */ |
712 | count = 0; | |
67207b96 | 713 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 714 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 715 | count = -EAGAIN; |
eebead5b CH |
716 | goto out_unlock; |
717 | } | |
67207b96 | 718 | } else { |
cdcc89bb | 719 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
720 | if (count) |
721 | goto out; | |
67207b96 AB |
722 | } |
723 | ||
cdcc89bb | 724 | /* if we can't write at all, return -EFAULT */ |
6904d3d0 | 725 | count = put_user(ibox_data, udata); |
cdcc89bb | 726 | if (count) |
eebead5b | 727 | goto out_unlock; |
8b3d6663 | 728 | |
cdcc89bb AB |
729 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
730 | int ret; | |
731 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
732 | if (ret == 0) | |
733 | break; | |
734 | /* | |
735 | * at the end of the mapped area, we can fault | |
736 | * but still need to return the data we have | |
737 | * read successfully so far. | |
738 | */ | |
6904d3d0 | 739 | ret = put_user(ibox_data, udata); |
cdcc89bb AB |
740 | if (ret) |
741 | break; | |
742 | } | |
67207b96 | 743 | |
eebead5b | 744 | out_unlock: |
cdcc89bb | 745 | spu_release(ctx); |
eebead5b | 746 | out: |
cdcc89bb | 747 | return count; |
67207b96 AB |
748 | } |
749 | ||
8153a5ea | 750 | static __poll_t spufs_ibox_poll(struct file *file, poll_table *wait) |
67207b96 | 751 | { |
8b3d6663 | 752 | struct spu_context *ctx = file->private_data; |
8153a5ea | 753 | __poll_t mask; |
67207b96 | 754 | |
8b3d6663 | 755 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 756 | |
c9101bdb CH |
757 | /* |
758 | * For now keep this uninterruptible and also ignore the rule | |
759 | * that poll should not sleep. Will be fixed later. | |
760 | */ | |
761 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 762 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLIN | EPOLLRDNORM); |
3a843d7c | 763 | spu_release(ctx); |
67207b96 AB |
764 | |
765 | return mask; | |
766 | } | |
767 | ||
5dfe4c96 | 768 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
769 | .open = spufs_pipe_open, |
770 | .read = spufs_ibox_read, | |
771 | .poll = spufs_ibox_poll, | |
fc15351d | 772 | .llseek = no_llseek, |
67207b96 AB |
773 | }; |
774 | ||
775 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
776 | size_t len, loff_t *pos) | |
777 | { | |
8b3d6663 | 778 | struct spu_context *ctx = file->private_data; |
c9101bdb | 779 | ssize_t ret; |
67207b96 AB |
780 | u32 ibox_stat; |
781 | ||
782 | if (len < 4) | |
783 | return -EINVAL; | |
784 | ||
c9101bdb CH |
785 | ret = spu_acquire(ctx); |
786 | if (ret) | |
787 | return ret; | |
8b3d6663 AB |
788 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
789 | spu_release(ctx); | |
67207b96 AB |
790 | |
791 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
792 | return -EFAULT; | |
793 | ||
794 | return 4; | |
795 | } | |
796 | ||
5dfe4c96 | 797 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
798 | .open = spufs_pipe_open, |
799 | .read = spufs_ibox_stat_read, | |
fc15351d | 800 | .llseek = no_llseek, |
67207b96 AB |
801 | }; |
802 | ||
803 | /* low-level mailbox write */ | |
8b3d6663 | 804 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 805 | { |
8b3d6663 AB |
806 | return ctx->ops->wbox_write(ctx, data); |
807 | } | |
67207b96 | 808 | |
8b3d6663 AB |
809 | /* interrupt-level wbox callback function. */ |
810 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 811 | { |
8b3d6663 AB |
812 | struct spu_context *ctx = spu->ctx; |
813 | ||
7d7be3aa AV |
814 | if (ctx) |
815 | wake_up_all(&ctx->wbox_wq); | |
67207b96 AB |
816 | } |
817 | ||
cdcc89bb AB |
818 | /* |
819 | * Write as many bytes to the interrupt mailbox as possible, until | |
820 | * one of the conditions becomes true: | |
821 | * | |
822 | * - the mailbox is full | |
823 | * - end of the user provided buffer | |
824 | * - end of the mapped area | |
825 | * | |
826 | * If the file is opened without O_NONBLOCK, we wait here until | |
027dfac6 | 827 | * space is available, but return when we have been able to |
cdcc89bb AB |
828 | * write something. |
829 | */ | |
67207b96 AB |
830 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
831 | size_t len, loff_t *pos) | |
832 | { | |
8b3d6663 | 833 | struct spu_context *ctx = file->private_data; |
6904d3d0 | 834 | u32 wbox_data, __user *udata = (void __user *)buf; |
cdcc89bb | 835 | ssize_t count; |
67207b96 AB |
836 | |
837 | if (len < 4) | |
838 | return -EINVAL; | |
839 | ||
6904d3d0 | 840 | if (get_user(wbox_data, udata)) |
67207b96 AB |
841 | return -EFAULT; |
842 | ||
c9101bdb CH |
843 | count = spu_acquire(ctx); |
844 | if (count) | |
eebead5b | 845 | goto out; |
8b3d6663 | 846 | |
cdcc89bb AB |
847 | /* |
848 | * make sure we can at least write one element, by waiting | |
849 | * in case of !O_NONBLOCK | |
850 | */ | |
851 | count = 0; | |
67207b96 | 852 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 853 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 854 | count = -EAGAIN; |
eebead5b CH |
855 | goto out_unlock; |
856 | } | |
67207b96 | 857 | } else { |
cdcc89bb | 858 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
859 | if (count) |
860 | goto out; | |
67207b96 AB |
861 | } |
862 | ||
8b3d6663 | 863 | |
96de0e25 | 864 | /* write as much as possible */ |
cdcc89bb AB |
865 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
866 | int ret; | |
6904d3d0 | 867 | ret = get_user(wbox_data, udata); |
cdcc89bb AB |
868 | if (ret) |
869 | break; | |
870 | ||
871 | ret = spu_wbox_write(ctx, wbox_data); | |
872 | if (ret == 0) | |
873 | break; | |
874 | } | |
875 | ||
eebead5b | 876 | out_unlock: |
cdcc89bb | 877 | spu_release(ctx); |
eebead5b | 878 | out: |
cdcc89bb | 879 | return count; |
67207b96 AB |
880 | } |
881 | ||
8153a5ea | 882 | static __poll_t spufs_wbox_poll(struct file *file, poll_table *wait) |
67207b96 | 883 | { |
8b3d6663 | 884 | struct spu_context *ctx = file->private_data; |
8153a5ea | 885 | __poll_t mask; |
67207b96 | 886 | |
8b3d6663 | 887 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 888 | |
c9101bdb CH |
889 | /* |
890 | * For now keep this uninterruptible and also ignore the rule | |
891 | * that poll should not sleep. Will be fixed later. | |
892 | */ | |
893 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 894 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLOUT | EPOLLWRNORM); |
3a843d7c | 895 | spu_release(ctx); |
67207b96 AB |
896 | |
897 | return mask; | |
898 | } | |
899 | ||
5dfe4c96 | 900 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
901 | .open = spufs_pipe_open, |
902 | .write = spufs_wbox_write, | |
903 | .poll = spufs_wbox_poll, | |
fc15351d | 904 | .llseek = no_llseek, |
67207b96 AB |
905 | }; |
906 | ||
907 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
908 | size_t len, loff_t *pos) | |
909 | { | |
8b3d6663 | 910 | struct spu_context *ctx = file->private_data; |
c9101bdb | 911 | ssize_t ret; |
67207b96 AB |
912 | u32 wbox_stat; |
913 | ||
914 | if (len < 4) | |
915 | return -EINVAL; | |
916 | ||
c9101bdb CH |
917 | ret = spu_acquire(ctx); |
918 | if (ret) | |
919 | return ret; | |
8b3d6663 AB |
920 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
921 | spu_release(ctx); | |
67207b96 AB |
922 | |
923 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
924 | return -EFAULT; | |
925 | ||
926 | return 4; | |
927 | } | |
928 | ||
5dfe4c96 | 929 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
930 | .open = spufs_pipe_open, |
931 | .read = spufs_wbox_stat_read, | |
fc15351d | 932 | .llseek = no_llseek, |
67207b96 AB |
933 | }; |
934 | ||
6df10a82 MN |
935 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
936 | { | |
937 | struct spufs_inode_info *i = SPUFS_I(inode); | |
938 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 939 | |
47d3a5fa | 940 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 941 | file->private_data = ctx; |
43c2bbd9 CH |
942 | if (!i->i_openers++) |
943 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 944 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
945 | return nonseekable_open(inode, file); |
946 | } | |
947 | ||
43c2bbd9 CH |
948 | static int |
949 | spufs_signal1_release(struct inode *inode, struct file *file) | |
950 | { | |
951 | struct spufs_inode_info *i = SPUFS_I(inode); | |
952 | struct spu_context *ctx = i->i_ctx; | |
953 | ||
47d3a5fa | 954 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
955 | if (!--i->i_openers) |
956 | ctx->signal1 = NULL; | |
47d3a5fa | 957 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
958 | return 0; |
959 | } | |
960 | ||
5456ffde CH |
961 | static ssize_t spufs_signal1_dump(struct spu_context *ctx, |
962 | struct coredump_params *cprm) | |
67207b96 | 963 | { |
5456ffde CH |
964 | if (!ctx->csa.spu_chnlcnt_RW[3]) |
965 | return 0; | |
966 | return spufs_dump_emit(cprm, &ctx->csa.spu_chnldata_RW[3], | |
967 | sizeof(ctx->csa.spu_chnldata_RW[3])); | |
968 | } | |
67207b96 | 969 | |
5456ffde CH |
970 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
971 | size_t len) | |
972 | { | |
973 | if (len < sizeof(ctx->csa.spu_chnldata_RW[3])) | |
67207b96 | 974 | return -EINVAL; |
5456ffde CH |
975 | if (!ctx->csa.spu_chnlcnt_RW[3]) |
976 | return 0; | |
977 | if (copy_to_user(buf, &ctx->csa.spu_chnldata_RW[3], | |
978 | sizeof(ctx->csa.spu_chnldata_RW[3]))) | |
67207b96 | 979 | return -EFAULT; |
5456ffde | 980 | return sizeof(ctx->csa.spu_chnldata_RW[3]); |
67207b96 AB |
981 | } |
982 | ||
bf1ab978 DGM |
983 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
984 | size_t len, loff_t *pos) | |
985 | { | |
986 | int ret; | |
987 | struct spu_context *ctx = file->private_data; | |
988 | ||
c9101bdb CH |
989 | ret = spu_acquire_saved(ctx); |
990 | if (ret) | |
991 | return ret; | |
5456ffde | 992 | ret = __spufs_signal1_read(ctx, buf, len); |
27b1ea09 | 993 | spu_release_saved(ctx); |
bf1ab978 DGM |
994 | |
995 | return ret; | |
996 | } | |
997 | ||
67207b96 AB |
998 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
999 | size_t len, loff_t *pos) | |
1000 | { | |
1001 | struct spu_context *ctx; | |
c9101bdb | 1002 | ssize_t ret; |
67207b96 AB |
1003 | u32 data; |
1004 | ||
1005 | ctx = file->private_data; | |
67207b96 AB |
1006 | |
1007 | if (len < 4) | |
1008 | return -EINVAL; | |
1009 | ||
1010 | if (copy_from_user(&data, buf, 4)) | |
1011 | return -EFAULT; | |
1012 | ||
c9101bdb CH |
1013 | ret = spu_acquire(ctx); |
1014 | if (ret) | |
1015 | return ret; | |
8b3d6663 AB |
1016 | ctx->ops->signal1_write(ctx, data); |
1017 | spu_release(ctx); | |
67207b96 AB |
1018 | |
1019 | return 4; | |
1020 | } | |
1021 | ||
e807f02c | 1022 | static vm_fault_t |
11bac800 | 1023 | spufs_signal1_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1024 | { |
87ff6090 | 1025 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1026 | return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1027 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1028 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1029 | * signal 1 and 2 area | |
1030 | */ | |
11bac800 | 1031 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1032 | #else |
1033 | #error unsupported page size | |
1034 | #endif | |
6df10a82 MN |
1035 | } |
1036 | ||
f0f37e2f | 1037 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1038 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1039 | }; |
1040 | ||
1041 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1042 | { | |
1043 | if (!(vma->vm_flags & VM_SHARED)) | |
1044 | return -EINVAL; | |
1045 | ||
1c71222e | 1046 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 1047 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1048 | |
1049 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1050 | return 0; | |
1051 | } | |
6df10a82 | 1052 | |
5dfe4c96 | 1053 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1054 | .open = spufs_signal1_open, |
43c2bbd9 | 1055 | .release = spufs_signal1_release, |
67207b96 AB |
1056 | .read = spufs_signal1_read, |
1057 | .write = spufs_signal1_write, | |
6df10a82 | 1058 | .mmap = spufs_signal1_mmap, |
fc15351d | 1059 | .llseek = no_llseek, |
67207b96 AB |
1060 | }; |
1061 | ||
d054b36f JK |
1062 | static const struct file_operations spufs_signal1_nosched_fops = { |
1063 | .open = spufs_signal1_open, | |
1064 | .release = spufs_signal1_release, | |
1065 | .write = spufs_signal1_write, | |
1066 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1067 | .llseek = no_llseek, |
d054b36f JK |
1068 | }; |
1069 | ||
6df10a82 MN |
1070 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1071 | { | |
1072 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1073 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1074 | |
47d3a5fa | 1075 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1076 | file->private_data = ctx; |
43c2bbd9 CH |
1077 | if (!i->i_openers++) |
1078 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1079 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1080 | return nonseekable_open(inode, file); |
1081 | } | |
1082 | ||
43c2bbd9 CH |
1083 | static int |
1084 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1085 | { | |
1086 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1087 | struct spu_context *ctx = i->i_ctx; | |
1088 | ||
47d3a5fa | 1089 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1090 | if (!--i->i_openers) |
1091 | ctx->signal2 = NULL; | |
47d3a5fa | 1092 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1093 | return 0; |
1094 | } | |
1095 | ||
5456ffde CH |
1096 | static ssize_t spufs_signal2_dump(struct spu_context *ctx, |
1097 | struct coredump_params *cprm) | |
67207b96 | 1098 | { |
5456ffde CH |
1099 | if (!ctx->csa.spu_chnlcnt_RW[4]) |
1100 | return 0; | |
1101 | return spufs_dump_emit(cprm, &ctx->csa.spu_chnldata_RW[4], | |
1102 | sizeof(ctx->csa.spu_chnldata_RW[4])); | |
1103 | } | |
67207b96 | 1104 | |
5456ffde CH |
1105 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
1106 | size_t len) | |
1107 | { | |
1108 | if (len < sizeof(ctx->csa.spu_chnldata_RW[4])) | |
67207b96 | 1109 | return -EINVAL; |
5456ffde CH |
1110 | if (!ctx->csa.spu_chnlcnt_RW[4]) |
1111 | return 0; | |
1112 | if (copy_to_user(buf, &ctx->csa.spu_chnldata_RW[4], | |
1113 | sizeof(ctx->csa.spu_chnldata_RW[4]))) | |
67207b96 | 1114 | return -EFAULT; |
5456ffde | 1115 | return sizeof(ctx->csa.spu_chnldata_RW[4]); |
bf1ab978 DGM |
1116 | } |
1117 | ||
1118 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1119 | size_t len, loff_t *pos) | |
1120 | { | |
1121 | struct spu_context *ctx = file->private_data; | |
1122 | int ret; | |
1123 | ||
c9101bdb CH |
1124 | ret = spu_acquire_saved(ctx); |
1125 | if (ret) | |
1126 | return ret; | |
5456ffde | 1127 | ret = __spufs_signal2_read(ctx, buf, len); |
27b1ea09 | 1128 | spu_release_saved(ctx); |
bf1ab978 DGM |
1129 | |
1130 | return ret; | |
67207b96 AB |
1131 | } |
1132 | ||
1133 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1134 | size_t len, loff_t *pos) | |
1135 | { | |
1136 | struct spu_context *ctx; | |
c9101bdb | 1137 | ssize_t ret; |
67207b96 AB |
1138 | u32 data; |
1139 | ||
1140 | ctx = file->private_data; | |
67207b96 AB |
1141 | |
1142 | if (len < 4) | |
1143 | return -EINVAL; | |
1144 | ||
1145 | if (copy_from_user(&data, buf, 4)) | |
1146 | return -EFAULT; | |
1147 | ||
c9101bdb CH |
1148 | ret = spu_acquire(ctx); |
1149 | if (ret) | |
1150 | return ret; | |
8b3d6663 AB |
1151 | ctx->ops->signal2_write(ctx, data); |
1152 | spu_release(ctx); | |
67207b96 AB |
1153 | |
1154 | return 4; | |
1155 | } | |
1156 | ||
27d5bf2a | 1157 | #if SPUFS_MMAP_4K |
e807f02c | 1158 | static vm_fault_t |
11bac800 | 1159 | spufs_signal2_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1160 | { |
87ff6090 | 1161 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1162 | return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1163 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1164 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1165 | * signal 1 and 2 area | |
1166 | */ | |
11bac800 | 1167 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1168 | #else |
1169 | #error unsupported page size | |
1170 | #endif | |
6df10a82 MN |
1171 | } |
1172 | ||
f0f37e2f | 1173 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1174 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1175 | }; |
1176 | ||
1177 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1178 | { | |
1179 | if (!(vma->vm_flags & VM_SHARED)) | |
1180 | return -EINVAL; | |
1181 | ||
1c71222e | 1182 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 1183 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1184 | |
1185 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1186 | return 0; | |
1187 | } | |
27d5bf2a BH |
1188 | #else /* SPUFS_MMAP_4K */ |
1189 | #define spufs_signal2_mmap NULL | |
1190 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1191 | |
5dfe4c96 | 1192 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1193 | .open = spufs_signal2_open, |
43c2bbd9 | 1194 | .release = spufs_signal2_release, |
67207b96 AB |
1195 | .read = spufs_signal2_read, |
1196 | .write = spufs_signal2_write, | |
6df10a82 | 1197 | .mmap = spufs_signal2_mmap, |
fc15351d | 1198 | .llseek = no_llseek, |
67207b96 AB |
1199 | }; |
1200 | ||
d054b36f JK |
1201 | static const struct file_operations spufs_signal2_nosched_fops = { |
1202 | .open = spufs_signal2_open, | |
1203 | .release = spufs_signal2_release, | |
1204 | .write = spufs_signal2_write, | |
1205 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1206 | .llseek = no_llseek, |
d054b36f JK |
1207 | }; |
1208 | ||
104f0cc2 ME |
1209 | /* |
1210 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1211 | * work of acquiring (or not) the SPU context before calling through | |
1212 | * to the actual get routine. The set routine is called directly. | |
1213 | */ | |
1214 | #define SPU_ATTR_NOACQUIRE 0 | |
1215 | #define SPU_ATTR_ACQUIRE 1 | |
1216 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1217 | ||
1218 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1219 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1220 | { \ |
1221 | struct spu_context *ctx = data; \ | |
c9101bdb | 1222 | int ret = 0; \ |
104f0cc2 ME |
1223 | \ |
1224 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1225 | ret = spu_acquire(ctx); \ |
1226 | if (ret) \ | |
1227 | return ret; \ | |
197b1a82 | 1228 | *val = __get(ctx); \ |
104f0cc2 ME |
1229 | spu_release(ctx); \ |
1230 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1231 | ret = spu_acquire_saved(ctx); \ |
1232 | if (ret) \ | |
1233 | return ret; \ | |
197b1a82 | 1234 | *val = __get(ctx); \ |
104f0cc2 ME |
1235 | spu_release_saved(ctx); \ |
1236 | } else \ | |
197b1a82 | 1237 | *val = __get(ctx); \ |
104f0cc2 | 1238 | \ |
197b1a82 | 1239 | return 0; \ |
104f0cc2 | 1240 | } \ |
197b1a82 | 1241 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1242 | |
197b1a82 | 1243 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1244 | { |
1245 | struct spu_context *ctx = data; | |
c9101bdb | 1246 | int ret; |
67207b96 | 1247 | |
c9101bdb CH |
1248 | ret = spu_acquire(ctx); |
1249 | if (ret) | |
1250 | return ret; | |
8b3d6663 AB |
1251 | ctx->ops->signal1_type_set(ctx, val); |
1252 | spu_release(ctx); | |
197b1a82 CH |
1253 | |
1254 | return 0; | |
67207b96 AB |
1255 | } |
1256 | ||
104f0cc2 | 1257 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1258 | { |
bf1ab978 DGM |
1259 | return ctx->ops->signal1_type_get(ctx); |
1260 | } | |
104f0cc2 | 1261 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1262 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1263 | |
67207b96 | 1264 | |
197b1a82 | 1265 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1266 | { |
1267 | struct spu_context *ctx = data; | |
c9101bdb | 1268 | int ret; |
67207b96 | 1269 | |
c9101bdb CH |
1270 | ret = spu_acquire(ctx); |
1271 | if (ret) | |
1272 | return ret; | |
8b3d6663 AB |
1273 | ctx->ops->signal2_type_set(ctx, val); |
1274 | spu_release(ctx); | |
197b1a82 CH |
1275 | |
1276 | return 0; | |
67207b96 AB |
1277 | } |
1278 | ||
104f0cc2 | 1279 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1280 | { |
bf1ab978 DGM |
1281 | return ctx->ops->signal2_type_get(ctx); |
1282 | } | |
104f0cc2 | 1283 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1284 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1285 | |
27d5bf2a | 1286 | #if SPUFS_MMAP_4K |
e807f02c | 1287 | static vm_fault_t |
11bac800 | 1288 | spufs_mss_mmap_fault(struct vm_fault *vmf) |
d9379c4b | 1289 | { |
11bac800 | 1290 | return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b | 1291 | } |
1292 | ||
f0f37e2f | 1293 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1294 | .fault = spufs_mss_mmap_fault, |
d9379c4b | 1295 | }; |
1296 | ||
1297 | /* | |
1298 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b | 1299 | */ |
1300 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1301 | { | |
1302 | if (!(vma->vm_flags & VM_SHARED)) | |
1303 | return -EINVAL; | |
1304 | ||
1c71222e | 1305 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 1306 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b | 1307 | |
1308 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1309 | return 0; | |
1310 | } | |
27d5bf2a BH |
1311 | #else /* SPUFS_MMAP_4K */ |
1312 | #define spufs_mss_mmap NULL | |
1313 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b | 1314 | |
1315 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1316 | { | |
1317 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1318 | struct spu_context *ctx = i->i_ctx; |
d9379c4b | 1319 | |
1320 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1321 | |
47d3a5fa | 1322 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1323 | if (!i->i_openers++) |
1324 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1325 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b | 1326 | return nonseekable_open(inode, file); |
1327 | } | |
1328 | ||
43c2bbd9 CH |
1329 | static int |
1330 | spufs_mss_release(struct inode *inode, struct file *file) | |
1331 | { | |
1332 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1333 | struct spu_context *ctx = i->i_ctx; | |
1334 | ||
47d3a5fa | 1335 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1336 | if (!--i->i_openers) |
1337 | ctx->mss = NULL; | |
47d3a5fa | 1338 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1339 | return 0; |
1340 | } | |
1341 | ||
5dfe4c96 | 1342 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1343 | .open = spufs_mss_open, |
43c2bbd9 | 1344 | .release = spufs_mss_release, |
d9379c4b | 1345 | .mmap = spufs_mss_mmap, |
fc15351d | 1346 | .llseek = no_llseek, |
27d5bf2a BH |
1347 | }; |
1348 | ||
e807f02c | 1349 | static vm_fault_t |
11bac800 | 1350 | spufs_psmap_mmap_fault(struct vm_fault *vmf) |
27d5bf2a | 1351 | { |
11bac800 | 1352 | return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1353 | } |
1354 | ||
f0f37e2f | 1355 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1356 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1357 | }; |
1358 | ||
1359 | /* | |
1360 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1361 | */ | |
1362 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1363 | { | |
1364 | if (!(vma->vm_flags & VM_SHARED)) | |
1365 | return -EINVAL; | |
1366 | ||
1c71222e | 1367 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 1368 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1369 | |
1370 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1375 | { | |
1376 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1377 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1378 | |
47d3a5fa | 1379 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1380 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1381 | if (!i->i_openers++) |
1382 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1383 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1384 | return nonseekable_open(inode, file); |
1385 | } | |
1386 | ||
43c2bbd9 CH |
1387 | static int |
1388 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1389 | { | |
1390 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1391 | struct spu_context *ctx = i->i_ctx; | |
1392 | ||
47d3a5fa | 1393 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1394 | if (!--i->i_openers) |
1395 | ctx->psmap = NULL; | |
47d3a5fa | 1396 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1397 | return 0; |
1398 | } | |
1399 | ||
5dfe4c96 | 1400 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1401 | .open = spufs_psmap_open, |
43c2bbd9 | 1402 | .release = spufs_psmap_release, |
27d5bf2a | 1403 | .mmap = spufs_psmap_mmap, |
fc15351d | 1404 | .llseek = no_llseek, |
d9379c4b | 1405 | }; |
1406 | ||
1407 | ||
27d5bf2a | 1408 | #if SPUFS_MMAP_4K |
e807f02c | 1409 | static vm_fault_t |
11bac800 | 1410 | spufs_mfc_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1411 | { |
11bac800 | 1412 | return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1413 | } |
1414 | ||
f0f37e2f | 1415 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1416 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1417 | }; |
1418 | ||
1419 | /* | |
1420 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1421 | */ |
1422 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1423 | { | |
1424 | if (!(vma->vm_flags & VM_SHARED)) | |
1425 | return -EINVAL; | |
1426 | ||
1c71222e | 1427 | vm_flags_set(vma, VM_IO | VM_PFNMAP); |
64b3d0e8 | 1428 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1429 | |
1430 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1431 | return 0; | |
1432 | } | |
27d5bf2a BH |
1433 | #else /* SPUFS_MMAP_4K */ |
1434 | #define spufs_mfc_mmap NULL | |
1435 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1436 | |
1437 | static int spufs_mfc_open(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 | ||
1442 | /* we don't want to deal with DMA into other processes */ | |
1443 | if (ctx->owner != current->mm) | |
1444 | return -EINVAL; | |
1445 | ||
1446 | if (atomic_read(&inode->i_count) != 1) | |
1447 | return -EBUSY; | |
1448 | ||
47d3a5fa | 1449 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1450 | file->private_data = ctx; |
43c2bbd9 CH |
1451 | if (!i->i_openers++) |
1452 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1453 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1454 | return nonseekable_open(inode, file); |
1455 | } | |
1456 | ||
43c2bbd9 CH |
1457 | static int |
1458 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1459 | { | |
1460 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1461 | struct spu_context *ctx = i->i_ctx; | |
1462 | ||
47d3a5fa | 1463 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1464 | if (!--i->i_openers) |
1465 | ctx->mfc = NULL; | |
47d3a5fa | 1466 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1467 | return 0; |
1468 | } | |
1469 | ||
a33a7d73 AB |
1470 | /* interrupt-level mfc callback function. */ |
1471 | void spufs_mfc_callback(struct spu *spu) | |
1472 | { | |
1473 | struct spu_context *ctx = spu->ctx; | |
1474 | ||
7d7be3aa AV |
1475 | if (ctx) |
1476 | wake_up_all(&ctx->mfc_wq); | |
a33a7d73 AB |
1477 | } |
1478 | ||
1479 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1480 | { | |
1481 | /* See if there is one tag group is complete */ | |
1482 | /* FIXME we need locking around tagwait */ | |
1483 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1484 | ctx->tagwait &= ~*status; | |
1485 | if (*status) | |
1486 | return 1; | |
1487 | ||
1488 | /* enable interrupt waiting for any tag group, | |
1489 | may silently fail if interrupts are already enabled */ | |
1490 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1491 | return 0; | |
1492 | } | |
1493 | ||
1494 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1495 | size_t size, loff_t *pos) | |
1496 | { | |
1497 | struct spu_context *ctx = file->private_data; | |
1498 | int ret = -EINVAL; | |
1499 | u32 status; | |
1500 | ||
1501 | if (size != 4) | |
1502 | goto out; | |
1503 | ||
c9101bdb CH |
1504 | ret = spu_acquire(ctx); |
1505 | if (ret) | |
1506 | return ret; | |
1507 | ||
1508 | ret = -EINVAL; | |
a33a7d73 AB |
1509 | if (file->f_flags & O_NONBLOCK) { |
1510 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1511 | if (!(status & ctx->tagwait)) | |
1512 | ret = -EAGAIN; | |
1513 | else | |
c9101bdb | 1514 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1515 | ctx->tagwait &= ~status; |
1516 | } else { | |
1517 | ret = spufs_wait(ctx->mfc_wq, | |
1518 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1519 | if (ret) |
1520 | goto out; | |
a33a7d73 AB |
1521 | } |
1522 | spu_release(ctx); | |
1523 | ||
a33a7d73 AB |
1524 | ret = 4; |
1525 | if (copy_to_user(buffer, &status, 4)) | |
1526 | ret = -EFAULT; | |
1527 | ||
1528 | out: | |
1529 | return ret; | |
1530 | } | |
1531 | ||
1532 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1533 | { | |
9477e455 | 1534 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1535 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1536 | ||
1537 | switch (cmd->cmd) { | |
1538 | case MFC_PUT_CMD: | |
1539 | case MFC_PUTF_CMD: | |
1540 | case MFC_PUTB_CMD: | |
1541 | case MFC_GET_CMD: | |
1542 | case MFC_GETF_CMD: | |
1543 | case MFC_GETB_CMD: | |
1544 | break; | |
1545 | default: | |
1546 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1547 | return -EIO; | |
1548 | } | |
1549 | ||
1550 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1551 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1552 | cmd->ea, cmd->lsa); |
1553 | return -EIO; | |
1554 | } | |
1555 | ||
1556 | switch (cmd->size & 0xf) { | |
1557 | case 1: | |
1558 | break; | |
1559 | case 2: | |
1560 | if (cmd->lsa & 1) | |
1561 | goto error; | |
1562 | break; | |
1563 | case 4: | |
1564 | if (cmd->lsa & 3) | |
1565 | goto error; | |
1566 | break; | |
1567 | case 8: | |
1568 | if (cmd->lsa & 7) | |
1569 | goto error; | |
1570 | break; | |
1571 | case 0: | |
1572 | if (cmd->lsa & 15) | |
1573 | goto error; | |
1574 | break; | |
1575 | error: | |
1576 | default: | |
1577 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1578 | cmd->lsa & 0xf, cmd->size); | |
1579 | return -EIO; | |
1580 | } | |
1581 | ||
1582 | if (cmd->size > 16 * 1024) { | |
1583 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1584 | return -EIO; | |
1585 | } | |
1586 | ||
1587 | if (cmd->tag & 0xfff0) { | |
1588 | /* we reserve the higher tag numbers for kernel use */ | |
1589 | pr_debug("invalid DMA tag\n"); | |
1590 | return -EIO; | |
1591 | } | |
1592 | ||
1593 | if (cmd->class) { | |
1594 | /* not supported in this version */ | |
1595 | pr_debug("invalid DMA class\n"); | |
1596 | return -EIO; | |
1597 | } | |
1598 | ||
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1603 | struct mfc_dma_command cmd, | |
1604 | int *error) | |
1605 | { | |
1606 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1607 | if (*error == -EAGAIN) { | |
1608 | /* wait for any tag group to complete | |
1609 | so we have space for the new command */ | |
1610 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1611 | /* try again, because the queue might be | |
1612 | empty again */ | |
1613 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1614 | if (*error == -EAGAIN) | |
1615 | return 0; | |
1616 | } | |
1617 | return 1; | |
1618 | } | |
1619 | ||
1620 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1621 | size_t size, loff_t *pos) | |
1622 | { | |
1623 | struct spu_context *ctx = file->private_data; | |
1624 | struct mfc_dma_command cmd; | |
1625 | int ret = -EINVAL; | |
1626 | ||
1627 | if (size != sizeof cmd) | |
1628 | goto out; | |
1629 | ||
1630 | ret = -EFAULT; | |
1631 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1632 | goto out; | |
1633 | ||
1634 | ret = spufs_check_valid_dma(&cmd); | |
1635 | if (ret) | |
1636 | goto out; | |
1637 | ||
c9101bdb CH |
1638 | ret = spu_acquire(ctx); |
1639 | if (ret) | |
1640 | goto out; | |
1641 | ||
33bfd7a7 | 1642 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1643 | if (ret) |
1644 | goto out; | |
1645 | ||
a33a7d73 AB |
1646 | if (file->f_flags & O_NONBLOCK) { |
1647 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1648 | } else { | |
1649 | int status; | |
1650 | ret = spufs_wait(ctx->mfc_wq, | |
1651 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1652 | if (ret) |
1653 | goto out; | |
a33a7d73 AB |
1654 | if (status) |
1655 | ret = status; | |
1656 | } | |
a33a7d73 AB |
1657 | |
1658 | if (ret) | |
933b0e35 | 1659 | goto out_unlock; |
a33a7d73 AB |
1660 | |
1661 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1662 | ret = size; |
a33a7d73 | 1663 | |
933b0e35 KA |
1664 | out_unlock: |
1665 | spu_release(ctx); | |
a33a7d73 AB |
1666 | out: |
1667 | return ret; | |
1668 | } | |
1669 | ||
8153a5ea | 1670 | static __poll_t spufs_mfc_poll(struct file *file,poll_table *wait) |
a33a7d73 AB |
1671 | { |
1672 | struct spu_context *ctx = file->private_data; | |
1673 | u32 free_elements, tagstatus; | |
8153a5ea | 1674 | __poll_t mask; |
a33a7d73 | 1675 | |
933b0e35 KA |
1676 | poll_wait(file, &ctx->mfc_wq, wait); |
1677 | ||
c9101bdb CH |
1678 | /* |
1679 | * For now keep this uninterruptible and also ignore the rule | |
1680 | * that poll should not sleep. Will be fixed later. | |
1681 | */ | |
1682 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1683 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1684 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1685 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1686 | spu_release(ctx); | |
1687 | ||
a33a7d73 AB |
1688 | mask = 0; |
1689 | if (free_elements & 0xffff) | |
a9a08845 | 1690 | mask |= EPOLLOUT | EPOLLWRNORM; |
a33a7d73 | 1691 | if (tagstatus & ctx->tagwait) |
a9a08845 | 1692 | mask |= EPOLLIN | EPOLLRDNORM; |
a33a7d73 | 1693 | |
e48b1b45 | 1694 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1695 | free_elements, tagstatus, ctx->tagwait); |
1696 | ||
1697 | return mask; | |
1698 | } | |
1699 | ||
73b6af8a | 1700 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1701 | { |
1702 | struct spu_context *ctx = file->private_data; | |
1703 | int ret; | |
1704 | ||
c9101bdb CH |
1705 | ret = spu_acquire(ctx); |
1706 | if (ret) | |
eebead5b | 1707 | goto out; |
a33a7d73 AB |
1708 | #if 0 |
1709 | /* this currently hangs */ | |
1710 | ret = spufs_wait(ctx->mfc_wq, | |
1711 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1712 | if (ret) | |
1713 | goto out; | |
1714 | ret = spufs_wait(ctx->mfc_wq, | |
1715 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1716 | if (ret) |
1717 | goto out; | |
a33a7d73 AB |
1718 | #else |
1719 | ret = 0; | |
1720 | #endif | |
1721 | spu_release(ctx); | |
eebead5b | 1722 | out: |
a33a7d73 AB |
1723 | return ret; |
1724 | } | |
1725 | ||
02c24a82 JB |
1726 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1727 | { | |
496ad9aa | 1728 | struct inode *inode = file_inode(file); |
3b49c9a1 | 1729 | int err = file_write_and_wait_range(file, start, end); |
02c24a82 | 1730 | if (!err) { |
5955102c | 1731 | inode_lock(inode); |
02c24a82 | 1732 | err = spufs_mfc_flush(file, NULL); |
5955102c | 1733 | inode_unlock(inode); |
02c24a82 JB |
1734 | } |
1735 | return err; | |
a33a7d73 AB |
1736 | } |
1737 | ||
5dfe4c96 | 1738 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1739 | .open = spufs_mfc_open, |
43c2bbd9 | 1740 | .release = spufs_mfc_release, |
a33a7d73 AB |
1741 | .read = spufs_mfc_read, |
1742 | .write = spufs_mfc_write, | |
1743 | .poll = spufs_mfc_poll, | |
1744 | .flush = spufs_mfc_flush, | |
1745 | .fsync = spufs_mfc_fsync, | |
6df10a82 | 1746 | .mmap = spufs_mfc_mmap, |
fc15351d | 1747 | .llseek = no_llseek, |
a33a7d73 AB |
1748 | }; |
1749 | ||
197b1a82 | 1750 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1751 | { |
1752 | struct spu_context *ctx = data; | |
c9101bdb CH |
1753 | int ret; |
1754 | ||
1755 | ret = spu_acquire(ctx); | |
1756 | if (ret) | |
1757 | return ret; | |
8b3d6663 AB |
1758 | ctx->ops->npc_write(ctx, val); |
1759 | spu_release(ctx); | |
197b1a82 CH |
1760 | |
1761 | return 0; | |
67207b96 AB |
1762 | } |
1763 | ||
104f0cc2 | 1764 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1765 | { |
1766 | return ctx->ops->npc_read(ctx); | |
1767 | } | |
104f0cc2 ME |
1768 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1769 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1770 | |
197b1a82 | 1771 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1772 | { |
1773 | struct spu_context *ctx = data; | |
1774 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1775 | int ret; |
1776 | ||
1777 | ret = spu_acquire_saved(ctx); | |
1778 | if (ret) | |
1779 | return ret; | |
8b3d6663 | 1780 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1781 | spu_release_saved(ctx); |
197b1a82 CH |
1782 | |
1783 | return 0; | |
8b3d6663 AB |
1784 | } |
1785 | ||
104f0cc2 | 1786 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1787 | { |
8b3d6663 | 1788 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1789 | return lscsa->decr.slot[0]; |
1790 | } | |
104f0cc2 ME |
1791 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1792 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1793 | |
197b1a82 | 1794 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1795 | { |
1796 | struct spu_context *ctx = data; | |
c9101bdb CH |
1797 | int ret; |
1798 | ||
1799 | ret = spu_acquire_saved(ctx); | |
1800 | if (ret) | |
1801 | return ret; | |
d40a01d4 MN |
1802 | if (val) |
1803 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1804 | else | |
1805 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1806 | spu_release_saved(ctx); |
197b1a82 CH |
1807 | |
1808 | return 0; | |
8b3d6663 AB |
1809 | } |
1810 | ||
104f0cc2 | 1811 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1812 | { |
d40a01d4 MN |
1813 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1814 | return SPU_DECR_STATUS_RUNNING; | |
1815 | else | |
1816 | return 0; | |
bf1ab978 | 1817 | } |
104f0cc2 ME |
1818 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1819 | spufs_decr_status_set, "0x%llx\n", | |
1820 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1821 | |
197b1a82 | 1822 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1823 | { |
1824 | struct spu_context *ctx = data; | |
1825 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1826 | int ret; |
1827 | ||
1828 | ret = spu_acquire_saved(ctx); | |
1829 | if (ret) | |
1830 | return ret; | |
8b3d6663 | 1831 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1832 | spu_release_saved(ctx); |
197b1a82 CH |
1833 | |
1834 | return 0; | |
8b3d6663 AB |
1835 | } |
1836 | ||
104f0cc2 | 1837 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1838 | { |
8b3d6663 | 1839 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1840 | return lscsa->event_mask.slot[0]; |
1841 | } | |
1842 | ||
104f0cc2 ME |
1843 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1844 | spufs_event_mask_set, "0x%llx\n", | |
1845 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1846 | |
104f0cc2 | 1847 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1848 | { |
b9e3bd77 | 1849 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1850 | u64 stat; |
b9e3bd77 DGM |
1851 | stat = state->spu_chnlcnt_RW[0]; |
1852 | if (stat) | |
bf1ab978 DGM |
1853 | return state->spu_chnldata_RW[0]; |
1854 | return 0; | |
1855 | } | |
104f0cc2 ME |
1856 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1857 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1858 | |
197b1a82 | 1859 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1860 | { |
1861 | struct spu_context *ctx = data; | |
1862 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1863 | int ret; |
1864 | ||
1865 | ret = spu_acquire_saved(ctx); | |
1866 | if (ret) | |
1867 | return ret; | |
8b3d6663 | 1868 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1869 | spu_release_saved(ctx); |
197b1a82 CH |
1870 | |
1871 | return 0; | |
8b3d6663 AB |
1872 | } |
1873 | ||
104f0cc2 | 1874 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1875 | { |
8b3d6663 | 1876 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1877 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1878 | } |
104f0cc2 ME |
1879 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1880 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1881 | |
104f0cc2 | 1882 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1883 | { |
7b1a7014 | 1884 | u64 num; |
1885 | ||
7b1a7014 | 1886 | if (ctx->state == SPU_STATE_RUNNABLE) |
1887 | num = ctx->spu->number; | |
1888 | else | |
1889 | num = (unsigned int)-1; | |
7b1a7014 | 1890 | |
1891 | return num; | |
1892 | } | |
104f0cc2 ME |
1893 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1894 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1895 | |
104f0cc2 | 1896 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1897 | { |
1898 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1899 | return ctx->object_id; |
bf1ab978 DGM |
1900 | } |
1901 | ||
197b1a82 | 1902 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
1903 | { |
1904 | struct spu_context *ctx = data; | |
1905 | ctx->object_id = id; | |
197b1a82 CH |
1906 | |
1907 | return 0; | |
86767277 AB |
1908 | } |
1909 | ||
104f0cc2 ME |
1910 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1911 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1912 | |
104f0cc2 | 1913 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1914 | { |
bf1ab978 DGM |
1915 | return ctx->csa.priv2.spu_lslr_RW; |
1916 | } | |
104f0cc2 ME |
1917 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1918 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1919 | |
1920 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1921 | { | |
1922 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1923 | struct spu_context *ctx = i->i_ctx; | |
1924 | file->private_data = ctx; | |
1925 | return 0; | |
1926 | } | |
1927 | ||
cbe709c1 BH |
1928 | static int spufs_caps_show(struct seq_file *s, void *private) |
1929 | { | |
1930 | struct spu_context *ctx = s->private; | |
1931 | ||
1932 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
1933 | seq_puts(s, "sched\n"); | |
1934 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
1935 | seq_puts(s, "step\n"); | |
1936 | return 0; | |
1937 | } | |
1938 | ||
1939 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
1940 | { | |
1941 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
1942 | } | |
1943 | ||
1944 | static const struct file_operations spufs_caps_fops = { | |
1945 | .open = spufs_caps_open, | |
1946 | .read = seq_read, | |
1947 | .llseek = seq_lseek, | |
1948 | .release = single_release, | |
1949 | }; | |
1950 | ||
5456ffde CH |
1951 | static ssize_t spufs_mbox_info_dump(struct spu_context *ctx, |
1952 | struct coredump_params *cprm) | |
bf1ab978 | 1953 | { |
cbea9238 JK |
1954 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) |
1955 | return 0; | |
5456ffde CH |
1956 | return spufs_dump_emit(cprm, &ctx->csa.prob.pu_mb_R, |
1957 | sizeof(ctx->csa.prob.pu_mb_R)); | |
bf1ab978 DGM |
1958 | } |
1959 | ||
69a2f00c DGM |
1960 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1961 | size_t len, loff_t *pos) | |
1962 | { | |
1963 | struct spu_context *ctx = file->private_data; | |
88413a6b JK |
1964 | u32 stat, data; |
1965 | int ret; | |
69a2f00c | 1966 | |
c9101bdb CH |
1967 | ret = spu_acquire_saved(ctx); |
1968 | if (ret) | |
1969 | return ret; | |
69a2f00c | 1970 | spin_lock(&ctx->csa.register_lock); |
88413a6b JK |
1971 | stat = ctx->csa.prob.mb_stat_R; |
1972 | data = ctx->csa.prob.pu_mb_R; | |
69a2f00c | 1973 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 1974 | spu_release_saved(ctx); |
69a2f00c | 1975 | |
88413a6b JK |
1976 | /* EOF if there's no entry in the mbox */ |
1977 | if (!(stat & 0x0000ff)) | |
1978 | return 0; | |
1979 | ||
1980 | return simple_read_from_buffer(buf, len, pos, &data, sizeof(data)); | |
69a2f00c DGM |
1981 | } |
1982 | ||
5dfe4c96 | 1983 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
1984 | .open = spufs_info_open, |
1985 | .read = spufs_mbox_info_read, | |
1986 | .llseek = generic_file_llseek, | |
1987 | }; | |
1988 | ||
5456ffde CH |
1989 | static ssize_t spufs_ibox_info_dump(struct spu_context *ctx, |
1990 | struct coredump_params *cprm) | |
bf1ab978 | 1991 | { |
cbea9238 JK |
1992 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) |
1993 | return 0; | |
5456ffde CH |
1994 | return spufs_dump_emit(cprm, &ctx->csa.priv2.puint_mb_R, |
1995 | sizeof(ctx->csa.priv2.puint_mb_R)); | |
bf1ab978 DGM |
1996 | } |
1997 | ||
69a2f00c DGM |
1998 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
1999 | size_t len, loff_t *pos) | |
2000 | { | |
2001 | struct spu_context *ctx = file->private_data; | |
88413a6b | 2002 | u32 stat, data; |
bf1ab978 | 2003 | int ret; |
69a2f00c | 2004 | |
c9101bdb CH |
2005 | ret = spu_acquire_saved(ctx); |
2006 | if (ret) | |
2007 | return ret; | |
69a2f00c | 2008 | spin_lock(&ctx->csa.register_lock); |
88413a6b JK |
2009 | stat = ctx->csa.prob.mb_stat_R; |
2010 | data = ctx->csa.priv2.puint_mb_R; | |
69a2f00c | 2011 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2012 | spu_release_saved(ctx); |
69a2f00c | 2013 | |
88413a6b JK |
2014 | /* EOF if there's no entry in the ibox */ |
2015 | if (!(stat & 0xff0000)) | |
2016 | return 0; | |
2017 | ||
2018 | return simple_read_from_buffer(buf, len, pos, &data, sizeof(data)); | |
69a2f00c DGM |
2019 | } |
2020 | ||
5dfe4c96 | 2021 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2022 | .open = spufs_info_open, |
2023 | .read = spufs_ibox_info_read, | |
2024 | .llseek = generic_file_llseek, | |
2025 | }; | |
2026 | ||
88413a6b JK |
2027 | static size_t spufs_wbox_info_cnt(struct spu_context *ctx) |
2028 | { | |
2029 | return (4 - ((ctx->csa.prob.mb_stat_R & 0x00ff00) >> 8)) * sizeof(u32); | |
2030 | } | |
2031 | ||
5456ffde CH |
2032 | static ssize_t spufs_wbox_info_dump(struct spu_context *ctx, |
2033 | struct coredump_params *cprm) | |
69a2f00c | 2034 | { |
5456ffde CH |
2035 | return spufs_dump_emit(cprm, &ctx->csa.spu_mailbox_data, |
2036 | spufs_wbox_info_cnt(ctx)); | |
bf1ab978 DGM |
2037 | } |
2038 | ||
2039 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2040 | size_t len, loff_t *pos) | |
2041 | { | |
2042 | struct spu_context *ctx = file->private_data; | |
88413a6b JK |
2043 | u32 data[ARRAY_SIZE(ctx->csa.spu_mailbox_data)]; |
2044 | int ret, count; | |
bf1ab978 | 2045 | |
c9101bdb CH |
2046 | ret = spu_acquire_saved(ctx); |
2047 | if (ret) | |
2048 | return ret; | |
69a2f00c | 2049 | spin_lock(&ctx->csa.register_lock); |
88413a6b JK |
2050 | count = spufs_wbox_info_cnt(ctx); |
2051 | memcpy(&data, &ctx->csa.spu_mailbox_data, sizeof(data)); | |
69a2f00c | 2052 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2053 | spu_release_saved(ctx); |
69a2f00c | 2054 | |
88413a6b JK |
2055 | return simple_read_from_buffer(buf, len, pos, &data, |
2056 | count * sizeof(u32)); | |
69a2f00c DGM |
2057 | } |
2058 | ||
5dfe4c96 | 2059 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2060 | .open = spufs_info_open, |
2061 | .read = spufs_wbox_info_read, | |
2062 | .llseek = generic_file_llseek, | |
2063 | }; | |
2064 | ||
88413a6b JK |
2065 | static void spufs_get_dma_info(struct spu_context *ctx, |
2066 | struct spu_dma_info *info) | |
b9e3bd77 | 2067 | { |
b9e3bd77 DGM |
2068 | int i; |
2069 | ||
88413a6b JK |
2070 | info->dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2071 | info->dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2072 | info->dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2073 | info->dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2074 | info->dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
b9e3bd77 | 2075 | for (i = 0; i < 16; i++) { |
88413a6b JK |
2076 | struct mfc_cq_sr *qp = &info->dma_info_command_data[i]; |
2077 | struct mfc_cq_sr *spuqp = &ctx->csa.priv2.spuq[i]; | |
b9e3bd77 DGM |
2078 | |
2079 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2080 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2081 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2082 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2083 | } | |
88413a6b JK |
2084 | } |
2085 | ||
5456ffde CH |
2086 | static ssize_t spufs_dma_info_dump(struct spu_context *ctx, |
2087 | struct coredump_params *cprm) | |
88413a6b JK |
2088 | { |
2089 | struct spu_dma_info info; | |
2090 | ||
2091 | spufs_get_dma_info(ctx, &info); | |
5456ffde | 2092 | return spufs_dump_emit(cprm, &info, sizeof(info)); |
b9e3bd77 DGM |
2093 | } |
2094 | ||
bf1ab978 DGM |
2095 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2096 | size_t len, loff_t *pos) | |
2097 | { | |
2098 | struct spu_context *ctx = file->private_data; | |
88413a6b | 2099 | struct spu_dma_info info; |
bf1ab978 DGM |
2100 | int ret; |
2101 | ||
c9101bdb CH |
2102 | ret = spu_acquire_saved(ctx); |
2103 | if (ret) | |
2104 | return ret; | |
bf1ab978 | 2105 | spin_lock(&ctx->csa.register_lock); |
88413a6b | 2106 | spufs_get_dma_info(ctx, &info); |
bf1ab978 | 2107 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2108 | spu_release_saved(ctx); |
bf1ab978 | 2109 | |
88413a6b JK |
2110 | return simple_read_from_buffer(buf, len, pos, &info, |
2111 | sizeof(info)); | |
bf1ab978 DGM |
2112 | } |
2113 | ||
5dfe4c96 | 2114 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2115 | .open = spufs_info_open, |
2116 | .read = spufs_dma_info_read, | |
fc15351d | 2117 | .llseek = no_llseek, |
b9e3bd77 DGM |
2118 | }; |
2119 | ||
88413a6b JK |
2120 | static void spufs_get_proxydma_info(struct spu_context *ctx, |
2121 | struct spu_proxydma_info *info) | |
2122 | { | |
2123 | int i; | |
2124 | ||
2125 | info->proxydma_info_type = ctx->csa.prob.dma_querytype_RW; | |
2126 | info->proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2127 | info->proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2128 | ||
2129 | for (i = 0; i < 8; i++) { | |
2130 | struct mfc_cq_sr *qp = &info->proxydma_info_command_data[i]; | |
2131 | struct mfc_cq_sr *puqp = &ctx->csa.priv2.puq[i]; | |
2132 | ||
2133 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2134 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2135 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2136 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2137 | } | |
2138 | } | |
2139 | ||
5456ffde CH |
2140 | static ssize_t spufs_proxydma_info_dump(struct spu_context *ctx, |
2141 | struct coredump_params *cprm) | |
b9e3bd77 | 2142 | { |
b9e3bd77 | 2143 | struct spu_proxydma_info info; |
b9e3bd77 | 2144 | |
88413a6b | 2145 | spufs_get_proxydma_info(ctx, &info); |
5456ffde | 2146 | return spufs_dump_emit(cprm, &info, sizeof(info)); |
bf1ab978 DGM |
2147 | } |
2148 | ||
2149 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2150 | size_t len, loff_t *pos) | |
2151 | { | |
2152 | struct spu_context *ctx = file->private_data; | |
88413a6b | 2153 | struct spu_proxydma_info info; |
bf1ab978 DGM |
2154 | int ret; |
2155 | ||
5456ffde CH |
2156 | if (len < sizeof(info)) |
2157 | return -EINVAL; | |
2158 | ||
c9101bdb CH |
2159 | ret = spu_acquire_saved(ctx); |
2160 | if (ret) | |
2161 | return ret; | |
bf1ab978 | 2162 | spin_lock(&ctx->csa.register_lock); |
88413a6b | 2163 | spufs_get_proxydma_info(ctx, &info); |
b9e3bd77 | 2164 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2165 | spu_release_saved(ctx); |
b9e3bd77 | 2166 | |
88413a6b JK |
2167 | return simple_read_from_buffer(buf, len, pos, &info, |
2168 | sizeof(info)); | |
b9e3bd77 DGM |
2169 | } |
2170 | ||
5dfe4c96 | 2171 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2172 | .open = spufs_info_open, |
2173 | .read = spufs_proxydma_info_read, | |
fc15351d | 2174 | .llseek = no_llseek, |
b9e3bd77 DGM |
2175 | }; |
2176 | ||
476273ad CH |
2177 | static int spufs_show_tid(struct seq_file *s, void *private) |
2178 | { | |
2179 | struct spu_context *ctx = s->private; | |
2180 | ||
2181 | seq_printf(s, "%d\n", ctx->tid); | |
2182 | return 0; | |
2183 | } | |
2184 | ||
2185 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2186 | { | |
2187 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2188 | } | |
2189 | ||
2190 | static const struct file_operations spufs_tid_fops = { | |
2191 | .open = spufs_tid_open, | |
2192 | .read = seq_read, | |
2193 | .llseek = seq_lseek, | |
2194 | .release = single_release, | |
2195 | }; | |
2196 | ||
e9f8a0b6 CH |
2197 | static const char *ctx_state_names[] = { |
2198 | "user", "system", "iowait", "loaded" | |
2199 | }; | |
2200 | ||
2201 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2202 | enum spu_utilization_state state) |
e9f8a0b6 | 2203 | { |
27ec41d3 | 2204 | unsigned long long time = ctx->stats.times[state]; |
e9f8a0b6 | 2205 | |
27ec41d3 AD |
2206 | /* |
2207 | * In general, utilization statistics are updated by the controlling | |
2208 | * thread as the spu context moves through various well defined | |
2209 | * state transitions, but if the context is lazily loaded its | |
2210 | * utilization statistics are not updated as the controlling thread | |
2211 | * is not tightly coupled with the execution of the spu context. We | |
2212 | * calculate and apply the time delta from the last recorded state | |
2213 | * of the spu context. | |
2214 | */ | |
2215 | if (ctx->spu && ctx->stats.util_state == state) { | |
f2dec1ea | 2216 | time += ktime_get_ns() - ctx->stats.tstamp; |
27ec41d3 | 2217 | } |
e9f8a0b6 | 2218 | |
27ec41d3 | 2219 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2220 | } |
2221 | ||
2222 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2223 | { | |
2224 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2225 | ||
2226 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2227 | slb_flts += (ctx->spu->stats.slb_flt - | |
2228 | ctx->stats.slb_flt_base); | |
2229 | } | |
2230 | ||
2231 | return slb_flts; | |
2232 | } | |
2233 | ||
2234 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2235 | { | |
2236 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2237 | ||
2238 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2239 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2240 | ctx->stats.class2_intr_base); | |
2241 | } | |
2242 | ||
2243 | return class2_intrs; | |
2244 | } | |
2245 | ||
2246 | ||
2247 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2248 | { | |
2249 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2250 | int ret; |
2251 | ||
2252 | ret = spu_acquire(ctx); | |
2253 | if (ret) | |
2254 | return ret; | |
e9f8a0b6 | 2255 | |
e9f8a0b6 CH |
2256 | seq_printf(s, "%s %llu %llu %llu %llu " |
2257 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2258 | ctx_state_names[ctx->stats.util_state], |
2259 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2260 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2261 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2262 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2263 | ctx->stats.vol_ctx_switch, |
2264 | ctx->stats.invol_ctx_switch, | |
2265 | spufs_slb_flts(ctx), | |
2266 | ctx->stats.hash_flt, | |
2267 | ctx->stats.min_flt, | |
2268 | ctx->stats.maj_flt, | |
2269 | spufs_class2_intrs(ctx), | |
2270 | ctx->stats.libassist); | |
2271 | spu_release(ctx); | |
2272 | return 0; | |
2273 | } | |
2274 | ||
2275 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2276 | { | |
2277 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2278 | } | |
2279 | ||
2280 | static const struct file_operations spufs_stat_fops = { | |
2281 | .open = spufs_stat_open, | |
2282 | .read = seq_read, | |
2283 | .llseek = seq_lseek, | |
2284 | .release = single_release, | |
2285 | }; | |
2286 | ||
5158e9b5 CH |
2287 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2288 | { | |
2289 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2290 | SWITCH_LOG_BUFSIZE; | |
2291 | } | |
2292 | ||
2293 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2294 | { | |
2295 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2296 | } | |
2297 | ||
2298 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2299 | { | |
2300 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2301 | int rc; |
2302 | ||
2303 | rc = spu_acquire(ctx); | |
2304 | if (rc) | |
2305 | return rc; | |
5158e9b5 | 2306 | |
5158e9b5 | 2307 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2308 | rc = -EBUSY; |
2309 | goto out; | |
5158e9b5 | 2310 | } |
f5ed0eb6 | 2311 | |
00def713 GS |
2312 | ctx->switch_log = kmalloc(struct_size(ctx->switch_log, log, |
2313 | SWITCH_LOG_BUFSIZE), GFP_KERNEL); | |
f5ed0eb6 JK |
2314 | |
2315 | if (!ctx->switch_log) { | |
2316 | rc = -ENOMEM; | |
2317 | goto out; | |
2318 | } | |
2319 | ||
837ef884 | 2320 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2321 | init_waitqueue_head(&ctx->switch_log->wait); |
2322 | rc = 0; | |
2323 | ||
2324 | out: | |
2325 | spu_release(ctx); | |
2326 | return rc; | |
2327 | } | |
2328 | ||
2329 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2330 | { | |
2331 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2332 | int rc; | |
2333 | ||
2334 | rc = spu_acquire(ctx); | |
2335 | if (rc) | |
2336 | return rc; | |
2337 | ||
2338 | kfree(ctx->switch_log); | |
2339 | ctx->switch_log = NULL; | |
2340 | spu_release(ctx); | |
5158e9b5 CH |
2341 | |
2342 | return 0; | |
5158e9b5 CH |
2343 | } |
2344 | ||
2345 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2346 | { | |
2347 | struct switch_log_entry *p; | |
2348 | ||
2349 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2350 | ||
cef37ac1 AB |
2351 | return snprintf(tbuf, n, "%llu.%09u %d %u %u %llu\n", |
2352 | (unsigned long long) p->tstamp.tv_sec, | |
5158e9b5 CH |
2353 | (unsigned int) p->tstamp.tv_nsec, |
2354 | p->spu_id, | |
2355 | (unsigned int) p->type, | |
2356 | (unsigned int) p->val, | |
2357 | (unsigned long long) p->timebase); | |
2358 | } | |
2359 | ||
2360 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2361 | size_t len, loff_t *ppos) | |
2362 | { | |
496ad9aa | 2363 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2364 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2365 | int error = 0, cnt = 0; | |
2366 | ||
17e37675 | 2367 | if (!buf) |
5158e9b5 CH |
2368 | return -EINVAL; |
2369 | ||
f5ed0eb6 JK |
2370 | error = spu_acquire(ctx); |
2371 | if (error) | |
2372 | return error; | |
2373 | ||
5158e9b5 CH |
2374 | while (cnt < len) { |
2375 | char tbuf[128]; | |
2376 | int width; | |
2377 | ||
14f693ee JK |
2378 | if (spufs_switch_log_used(ctx) == 0) { |
2379 | if (cnt > 0) { | |
2380 | /* If there's data ready to go, we can | |
2381 | * just return straight away */ | |
2382 | break; | |
2383 | ||
2384 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2385 | error = -EAGAIN; |
2386 | break; | |
14f693ee JK |
2387 | |
2388 | } else { | |
2389 | /* spufs_wait will drop the mutex and | |
2390 | * re-acquire, but since we're in read(), the | |
2391 | * file cannot be _released (and so | |
2392 | * ctx->switch_log is stable). | |
2393 | */ | |
2394 | error = spufs_wait(ctx->switch_log->wait, | |
2395 | spufs_switch_log_used(ctx) > 0); | |
2396 | ||
2397 | /* On error, spufs_wait returns without the | |
2398 | * state mutex held */ | |
2399 | if (error) | |
2400 | return error; | |
2401 | ||
2402 | /* We may have had entries read from underneath | |
2403 | * us while we dropped the mutex in spufs_wait, | |
2404 | * so re-check */ | |
2405 | if (spufs_switch_log_used(ctx) == 0) | |
2406 | continue; | |
f5ed0eb6 | 2407 | } |
5158e9b5 CH |
2408 | } |
2409 | ||
5158e9b5 | 2410 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2411 | if (width < len) |
5158e9b5 CH |
2412 | ctx->switch_log->tail = |
2413 | (ctx->switch_log->tail + 1) % | |
2414 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2415 | else |
2416 | /* If the record is greater than space available return | |
2417 | * partial buffer (so far) */ | |
5158e9b5 CH |
2418 | break; |
2419 | ||
2420 | error = copy_to_user(buf + cnt, tbuf, width); | |
2421 | if (error) | |
2422 | break; | |
2423 | cnt += width; | |
2424 | } | |
2425 | ||
f5ed0eb6 JK |
2426 | spu_release(ctx); |
2427 | ||
5158e9b5 CH |
2428 | return cnt == 0 ? error : cnt; |
2429 | } | |
2430 | ||
8153a5ea | 2431 | static __poll_t spufs_switch_log_poll(struct file *file, poll_table *wait) |
5158e9b5 | 2432 | { |
496ad9aa | 2433 | struct inode *inode = file_inode(file); |
5158e9b5 | 2434 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
8153a5ea | 2435 | __poll_t mask = 0; |
f5ed0eb6 | 2436 | int rc; |
5158e9b5 CH |
2437 | |
2438 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2439 | ||
f5ed0eb6 JK |
2440 | rc = spu_acquire(ctx); |
2441 | if (rc) | |
2442 | return rc; | |
2443 | ||
5158e9b5 | 2444 | if (spufs_switch_log_used(ctx) > 0) |
a9a08845 | 2445 | mask |= EPOLLIN; |
5158e9b5 | 2446 | |
f5ed0eb6 JK |
2447 | spu_release(ctx); |
2448 | ||
5158e9b5 CH |
2449 | return mask; |
2450 | } | |
2451 | ||
2452 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2453 | .open = spufs_switch_log_open, |
2454 | .read = spufs_switch_log_read, | |
2455 | .poll = spufs_switch_log_poll, | |
2456 | .release = spufs_switch_log_release, | |
fc15351d | 2457 | .llseek = no_llseek, |
5158e9b5 CH |
2458 | }; |
2459 | ||
f5ed0eb6 JK |
2460 | /** |
2461 | * Log a context switch event to a switch log reader. | |
2462 | * | |
2463 | * Must be called with ctx->state_mutex held. | |
2464 | */ | |
5158e9b5 CH |
2465 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2466 | u32 type, u32 val) | |
2467 | { | |
2468 | if (!ctx->switch_log) | |
2469 | return; | |
2470 | ||
5158e9b5 CH |
2471 | if (spufs_switch_log_avail(ctx) > 1) { |
2472 | struct switch_log_entry *p; | |
2473 | ||
2474 | p = ctx->switch_log->log + ctx->switch_log->head; | |
cef37ac1 | 2475 | ktime_get_ts64(&p->tstamp); |
5158e9b5 CH |
2476 | p->timebase = get_tb(); |
2477 | p->spu_id = spu ? spu->number : -1; | |
2478 | p->type = type; | |
2479 | p->val = val; | |
2480 | ||
2481 | ctx->switch_log->head = | |
2482 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2483 | } | |
5158e9b5 CH |
2484 | |
2485 | wake_up(&ctx->switch_log->wait); | |
2486 | } | |
e9f8a0b6 | 2487 | |
46deed69 LB |
2488 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2489 | { | |
2490 | struct spu_context *ctx = s->private; | |
2491 | u64 mfc_control_RW; | |
2492 | ||
2493 | mutex_lock(&ctx->state_mutex); | |
2494 | if (ctx->spu) { | |
2495 | struct spu *spu = ctx->spu; | |
2496 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2497 | ||
2498 | spin_lock_irq(&spu->register_lock); | |
2499 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2500 | spin_unlock_irq(&spu->register_lock); | |
2501 | } else { | |
2502 | struct spu_state *csa = &ctx->csa; | |
2503 | ||
2504 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2505 | } | |
2506 | ||
2507 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2508 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2509 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2510 | ctx->flags, | |
2511 | ctx->sched_flags, | |
2512 | ctx->prio, | |
2513 | ctx->time_slice, | |
2514 | ctx->spu ? ctx->spu->number : -1, | |
2515 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2516 | ctx->csa.class_0_pending, | |
2517 | ctx->csa.class_0_dar, | |
2518 | ctx->csa.class_1_dsisr, | |
2519 | mfc_control_RW, | |
2520 | ctx->ops->runcntl_read(ctx), | |
2521 | ctx->ops->status_read(ctx)); | |
2522 | ||
2523 | mutex_unlock(&ctx->state_mutex); | |
2524 | ||
2525 | return 0; | |
2526 | } | |
2527 | ||
2528 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2529 | { | |
2530 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2531 | } | |
2532 | ||
2533 | static const struct file_operations spufs_ctx_fops = { | |
2534 | .open = spufs_ctx_open, | |
2535 | .read = seq_read, | |
2536 | .llseek = seq_lseek, | |
2537 | .release = single_release, | |
2538 | }; | |
2539 | ||
74254647 | 2540 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2541 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2542 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2543 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2544 | { "mbox", &spufs_mbox_fops, 0444, }, |
2545 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2546 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2547 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2548 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2549 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2550 | { "signal1", &spufs_signal1_fops, 0666, }, |
2551 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2552 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2553 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2554 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2555 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2556 | { "lslr", &spufs_lslr_ops, 0444, }, |
2557 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2558 | { "mss", &spufs_mss_fops, 0666, }, | |
2559 | { "npc", &spufs_npc_ops, 0666, }, | |
2560 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2561 | { "decr", &spufs_decr_ops, 0666, }, |
2562 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2563 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2564 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2565 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2566 | { "phys-id", &spufs_id_ops, 0666, }, |
2567 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2568 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2569 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2570 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2571 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2572 | sizeof(struct spu_dma_info), }, | |
2573 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2574 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2575 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2576 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2577 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2578 | {}, |
2579 | }; | |
5737edd1 | 2580 | |
74254647 | 2581 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2582 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2583 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2584 | { "mbox", &spufs_mbox_fops, 0444, }, |
2585 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2586 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2587 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2588 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2589 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2590 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2591 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2592 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2593 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2594 | { "mss", &spufs_mss_fops, 0666, }, | |
2595 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2596 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2597 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2598 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2599 | { "phys-id", &spufs_id_ops, 0666, }, |
2600 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2601 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2602 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2603 | {}, |
2604 | }; | |
2605 | ||
74254647 | 2606 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2607 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2608 | {}, |
2609 | }; | |
bf1ab978 | 2610 | |
74254647 | 2611 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
5456ffde CH |
2612 | { "regs", spufs_regs_dump, NULL, sizeof(struct spu_reg128[128])}, |
2613 | { "fpcr", spufs_fpcr_dump, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2614 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2615 | { "decr", NULL, spufs_decr_get, 19 }, | |
2616 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
5456ffde CH |
2617 | { "mem", spufs_mem_dump, NULL, LS_SIZE, }, |
2618 | { "signal1", spufs_signal1_dump, NULL, sizeof(u32) }, | |
104f0cc2 | 2619 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
5456ffde | 2620 | { "signal2", spufs_signal2_dump, NULL, sizeof(u32) }, |
104f0cc2 ME |
2621 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2622 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2623 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
5456ffde CH |
2624 | { "mbox_info", spufs_mbox_info_dump, NULL, sizeof(u32) }, |
2625 | { "ibox_info", spufs_ibox_info_dump, NULL, sizeof(u32) }, | |
2626 | { "wbox_info", spufs_wbox_info_dump, NULL, 4 * sizeof(u32)}, | |
2627 | { "dma_info", spufs_dma_info_dump, NULL, sizeof(struct spu_dma_info)}, | |
2628 | { "proxydma_info", spufs_proxydma_info_dump, | |
4fca9c42 | 2629 | NULL, sizeof(struct spu_proxydma_info)}, |
104f0cc2 ME |
2630 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2631 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2632 | { NULL }, |
bf1ab978 | 2633 | }; |