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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 | ||
67207b96 AB |
12 | #include <linux/fs.h> |
13 | #include <linux/ioctl.h> | |
4b16f8e2 | 14 | #include <linux/export.h> |
d88cfffa | 15 | #include <linux/pagemap.h> |
67207b96 | 16 | #include <linux/poll.h> |
5110459f | 17 | #include <linux/ptrace.h> |
cbe709c1 | 18 | #include <linux/seq_file.h> |
5a0e3ad6 | 19 | #include <linux/slab.h> |
67207b96 AB |
20 | |
21 | #include <asm/io.h> | |
dfe1e09f | 22 | #include <asm/time.h> |
67207b96 | 23 | #include <asm/spu.h> |
b9e3bd77 | 24 | #include <asm/spu_info.h> |
7c0f6ba6 | 25 | #include <linux/uaccess.h> |
67207b96 AB |
26 | |
27 | #include "spufs.h" | |
ae142e0c | 28 | #include "sputrace.h" |
67207b96 | 29 | |
27d5bf2a BH |
30 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
31 | ||
197b1a82 CH |
32 | /* Simple attribute files */ |
33 | struct spufs_attr { | |
34 | int (*get)(void *, u64 *); | |
35 | int (*set)(void *, u64); | |
36 | char get_buf[24]; /* enough to store a u64 and "\n\0" */ | |
37 | char set_buf[24]; | |
38 | void *data; | |
39 | const char *fmt; /* format for read operation */ | |
40 | struct mutex mutex; /* protects access to these buffers */ | |
41 | }; | |
42 | ||
43 | static int spufs_attr_open(struct inode *inode, struct file *file, | |
44 | int (*get)(void *, u64 *), int (*set)(void *, u64), | |
45 | const char *fmt) | |
46 | { | |
47 | struct spufs_attr *attr; | |
48 | ||
49 | attr = kmalloc(sizeof(*attr), GFP_KERNEL); | |
50 | if (!attr) | |
51 | return -ENOMEM; | |
52 | ||
53 | attr->get = get; | |
54 | attr->set = set; | |
55 | attr->data = inode->i_private; | |
56 | attr->fmt = fmt; | |
57 | mutex_init(&attr->mutex); | |
58 | file->private_data = attr; | |
59 | ||
60 | return nonseekable_open(inode, file); | |
61 | } | |
62 | ||
63 | static int spufs_attr_release(struct inode *inode, struct file *file) | |
64 | { | |
65 | kfree(file->private_data); | |
66 | return 0; | |
67 | } | |
68 | ||
69 | static ssize_t spufs_attr_read(struct file *file, char __user *buf, | |
70 | size_t len, loff_t *ppos) | |
71 | { | |
72 | struct spufs_attr *attr; | |
73 | size_t size; | |
74 | ssize_t ret; | |
75 | ||
76 | attr = file->private_data; | |
77 | if (!attr->get) | |
78 | return -EACCES; | |
79 | ||
80 | ret = mutex_lock_interruptible(&attr->mutex); | |
81 | if (ret) | |
82 | return ret; | |
83 | ||
84 | if (*ppos) { /* continued read */ | |
85 | size = strlen(attr->get_buf); | |
86 | } else { /* first read */ | |
87 | u64 val; | |
88 | ret = attr->get(attr->data, &val); | |
89 | if (ret) | |
90 | goto out; | |
91 | ||
92 | size = scnprintf(attr->get_buf, sizeof(attr->get_buf), | |
93 | attr->fmt, (unsigned long long)val); | |
94 | } | |
95 | ||
96 | ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size); | |
97 | out: | |
98 | mutex_unlock(&attr->mutex); | |
99 | return ret; | |
100 | } | |
101 | ||
102 | static ssize_t spufs_attr_write(struct file *file, const char __user *buf, | |
103 | size_t len, loff_t *ppos) | |
104 | { | |
105 | struct spufs_attr *attr; | |
106 | u64 val; | |
107 | size_t size; | |
108 | ssize_t ret; | |
109 | ||
110 | attr = file->private_data; | |
111 | if (!attr->set) | |
112 | return -EACCES; | |
113 | ||
114 | ret = mutex_lock_interruptible(&attr->mutex); | |
115 | if (ret) | |
116 | return ret; | |
117 | ||
118 | ret = -EFAULT; | |
119 | size = min(sizeof(attr->set_buf) - 1, len); | |
120 | if (copy_from_user(attr->set_buf, buf, size)) | |
121 | goto out; | |
122 | ||
123 | ret = len; /* claim we got the whole input */ | |
124 | attr->set_buf[size] = '\0'; | |
125 | val = simple_strtol(attr->set_buf, NULL, 0); | |
126 | attr->set(attr->data, val); | |
127 | out: | |
128 | mutex_unlock(&attr->mutex); | |
129 | return ret; | |
130 | } | |
131 | ||
132 | #define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \ | |
133 | static int __fops ## _open(struct inode *inode, struct file *file) \ | |
134 | { \ | |
135 | __simple_attr_check_format(__fmt, 0ull); \ | |
136 | return spufs_attr_open(inode, file, __get, __set, __fmt); \ | |
137 | } \ | |
828c0950 | 138 | static const struct file_operations __fops = { \ |
197b1a82 CH |
139 | .open = __fops ## _open, \ |
140 | .release = spufs_attr_release, \ | |
141 | .read = spufs_attr_read, \ | |
142 | .write = spufs_attr_write, \ | |
fc15351d | 143 | .llseek = generic_file_llseek, \ |
197b1a82 CH |
144 | }; |
145 | ||
cbe709c1 | 146 | |
67207b96 AB |
147 | static int |
148 | spufs_mem_open(struct inode *inode, struct file *file) | |
149 | { | |
150 | struct spufs_inode_info *i = SPUFS_I(inode); | |
6df10a82 | 151 | struct spu_context *ctx = i->i_ctx; |
43c2bbd9 | 152 | |
47d3a5fa | 153 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 154 | file->private_data = ctx; |
43c2bbd9 CH |
155 | if (!i->i_openers++) |
156 | ctx->local_store = inode->i_mapping; | |
47d3a5fa | 157 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
158 | return 0; |
159 | } | |
160 | ||
161 | static int | |
162 | spufs_mem_release(struct inode *inode, struct file *file) | |
163 | { | |
164 | struct spufs_inode_info *i = SPUFS_I(inode); | |
165 | struct spu_context *ctx = i->i_ctx; | |
166 | ||
47d3a5fa | 167 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
168 | if (!--i->i_openers) |
169 | ctx->local_store = NULL; | |
47d3a5fa | 170 | mutex_unlock(&ctx->mapping_lock); |
67207b96 AB |
171 | return 0; |
172 | } | |
173 | ||
bf1ab978 DGM |
174 | static ssize_t |
175 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, | |
176 | size_t size, loff_t *pos) | |
177 | { | |
178 | char *local_store = ctx->ops->get_ls(ctx); | |
179 | return simple_read_from_buffer(buffer, size, pos, local_store, | |
180 | LS_SIZE); | |
181 | } | |
182 | ||
67207b96 AB |
183 | static ssize_t |
184 | spufs_mem_read(struct file *file, char __user *buffer, | |
185 | size_t size, loff_t *pos) | |
186 | { | |
bf1ab978 | 187 | struct spu_context *ctx = file->private_data; |
aa0ed2bd | 188 | ssize_t ret; |
67207b96 | 189 | |
c9101bdb CH |
190 | ret = spu_acquire(ctx); |
191 | if (ret) | |
192 | return ret; | |
bf1ab978 | 193 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
8b3d6663 | 194 | spu_release(ctx); |
c9101bdb | 195 | |
67207b96 AB |
196 | return ret; |
197 | } | |
198 | ||
199 | static ssize_t | |
200 | spufs_mem_write(struct file *file, const char __user *buffer, | |
aa0ed2bd | 201 | size_t size, loff_t *ppos) |
67207b96 AB |
202 | { |
203 | struct spu_context *ctx = file->private_data; | |
8b3d6663 | 204 | char *local_store; |
aa0ed2bd | 205 | loff_t pos = *ppos; |
8b3d6663 | 206 | int ret; |
67207b96 | 207 | |
aa0ed2bd | 208 | if (pos > LS_SIZE) |
67207b96 | 209 | return -EFBIG; |
8b3d6663 | 210 | |
c9101bdb CH |
211 | ret = spu_acquire(ctx); |
212 | if (ret) | |
213 | return ret; | |
214 | ||
8b3d6663 | 215 | local_store = ctx->ops->get_ls(ctx); |
63c3b9d7 | 216 | size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size); |
8b3d6663 | 217 | spu_release(ctx); |
aa0ed2bd | 218 | |
aa0ed2bd | 219 | return size; |
67207b96 AB |
220 | } |
221 | ||
e807f02c | 222 | static vm_fault_t |
11bac800 | 223 | spufs_mem_mmap_fault(struct vm_fault *vmf) |
8b3d6663 | 224 | { |
11bac800 | 225 | struct vm_area_struct *vma = vmf->vma; |
f1fa74f4 | 226 | struct spu_context *ctx = vma->vm_file->private_data; |
b1e2270f | 227 | unsigned long pfn, offset; |
e807f02c | 228 | vm_fault_t ret; |
b1e2270f | 229 | |
b1e2270f | 230 | offset = vmf->pgoff << PAGE_SHIFT; |
128b8546 | 231 | if (offset >= LS_SIZE) |
b1e2270f | 232 | return VM_FAULT_SIGBUS; |
128b8546 | 233 | |
b1e2270f | 234 | pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n", |
1a29d85e | 235 | vmf->address, offset); |
f1fa74f4 | 236 | |
c9101bdb | 237 | if (spu_acquire(ctx)) |
b1e2270f | 238 | return VM_FAULT_NOPAGE; |
8b3d6663 | 239 | |
ac91cb8d | 240 | if (ctx->state == SPU_STATE_SAVED) { |
64b3d0e8 | 241 | vma->vm_page_prot = pgprot_cached(vma->vm_page_prot); |
78bde53e | 242 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
ac91cb8d | 243 | } else { |
64b3d0e8 | 244 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
78bde53e | 245 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
ac91cb8d | 246 | } |
e807f02c | 247 | ret = vmf_insert_pfn(vma, vmf->address, pfn); |
8b3d6663 | 248 | |
78bde53e | 249 | spu_release(ctx); |
8b3d6663 | 250 | |
e807f02c | 251 | return ret; |
8b3d6663 AB |
252 | } |
253 | ||
a352894d BH |
254 | static int spufs_mem_mmap_access(struct vm_area_struct *vma, |
255 | unsigned long address, | |
256 | void *buf, int len, int write) | |
257 | { | |
258 | struct spu_context *ctx = vma->vm_file->private_data; | |
259 | unsigned long offset = address - vma->vm_start; | |
260 | char *local_store; | |
261 | ||
262 | if (write && !(vma->vm_flags & VM_WRITE)) | |
263 | return -EACCES; | |
264 | if (spu_acquire(ctx)) | |
265 | return -EINTR; | |
266 | if ((offset + len) > vma->vm_end) | |
267 | len = vma->vm_end - offset; | |
268 | local_store = ctx->ops->get_ls(ctx); | |
269 | if (write) | |
270 | memcpy_toio(local_store + offset, buf, len); | |
271 | else | |
272 | memcpy_fromio(buf, local_store + offset, len); | |
273 | spu_release(ctx); | |
274 | return len; | |
275 | } | |
78bde53e | 276 | |
f0f37e2f | 277 | static const struct vm_operations_struct spufs_mem_mmap_vmops = { |
b1e2270f | 278 | .fault = spufs_mem_mmap_fault, |
a352894d | 279 | .access = spufs_mem_mmap_access, |
8b3d6663 AB |
280 | }; |
281 | ||
f1fa74f4 | 282 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
67207b96 | 283 | { |
8b3d6663 AB |
284 | if (!(vma->vm_flags & VM_SHARED)) |
285 | return -EINVAL; | |
67207b96 | 286 | |
78bde53e | 287 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 288 | vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot); |
8b3d6663 AB |
289 | |
290 | vma->vm_ops = &spufs_mem_mmap_vmops; | |
67207b96 AB |
291 | return 0; |
292 | } | |
293 | ||
5dfe4c96 | 294 | static const struct file_operations spufs_mem_fops = { |
7022543e JK |
295 | .open = spufs_mem_open, |
296 | .release = spufs_mem_release, | |
297 | .read = spufs_mem_read, | |
298 | .write = spufs_mem_write, | |
299 | .llseek = generic_file_llseek, | |
300 | .mmap = spufs_mem_mmap, | |
8b3d6663 AB |
301 | }; |
302 | ||
e807f02c | 303 | static vm_fault_t spufs_ps_fault(struct vm_fault *vmf, |
78bde53e | 304 | unsigned long ps_offs, |
27d5bf2a | 305 | unsigned long ps_size) |
6df10a82 | 306 | { |
11bac800 | 307 | struct spu_context *ctx = vmf->vma->vm_file->private_data; |
b1e2270f | 308 | unsigned long area, offset = vmf->pgoff << PAGE_SHIFT; |
e807f02c SJ |
309 | int err = 0; |
310 | vm_fault_t ret = VM_FAULT_NOPAGE; | |
6df10a82 | 311 | |
b1e2270f | 312 | spu_context_nospu_trace(spufs_ps_fault__enter, ctx); |
038200cf | 313 | |
27d5bf2a | 314 | if (offset >= ps_size) |
b1e2270f | 315 | return VM_FAULT_SIGBUS; |
6df10a82 | 316 | |
60657263 JK |
317 | if (fatal_signal_pending(current)) |
318 | return VM_FAULT_SIGBUS; | |
319 | ||
d5883137 JK |
320 | /* |
321 | * Because we release the mmap_sem, the context may be destroyed while | |
322 | * we're in spu_wait. Grab an extra reference so it isn't destroyed | |
323 | * in the meantime. | |
324 | */ | |
325 | get_spu_context(ctx); | |
326 | ||
33bfd7a7 AB |
327 | /* |
328 | * We have to wait for context to be loaded before we have | |
329 | * pages to hand out to the user, but we don't want to wait | |
330 | * with the mmap_sem held. | |
331 | * It is possible to drop the mmap_sem here, but then we need | |
b1e2270f | 332 | * to return VM_FAULT_NOPAGE because the mappings may have |
33bfd7a7 | 333 | * hanged. |
78bde53e | 334 | */ |
c9101bdb | 335 | if (spu_acquire(ctx)) |
d5883137 | 336 | goto refault; |
c9101bdb | 337 | |
33bfd7a7 AB |
338 | if (ctx->state == SPU_STATE_SAVED) { |
339 | up_read(¤t->mm->mmap_sem); | |
b1e2270f | 340 | spu_context_nospu_trace(spufs_ps_fault__sleep, ctx); |
e807f02c | 341 | err = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
b1e2270f | 342 | spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu); |
33bfd7a7 | 343 | down_read(¤t->mm->mmap_sem); |
c9101bdb CH |
344 | } else { |
345 | area = ctx->spu->problem_phys + ps_offs; | |
e807f02c SJ |
346 | ret = vmf_insert_pfn(vmf->vma, vmf->address, |
347 | (area + offset) >> PAGE_SHIFT); | |
b1e2270f | 348 | spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu); |
33bfd7a7 | 349 | } |
6df10a82 | 350 | |
e807f02c | 351 | if (!err) |
eebead5b | 352 | spu_release(ctx); |
d5883137 JK |
353 | |
354 | refault: | |
355 | put_spu_context(ctx); | |
e807f02c | 356 | return ret; |
6df10a82 MN |
357 | } |
358 | ||
27d5bf2a | 359 | #if SPUFS_MMAP_4K |
e807f02c | 360 | static vm_fault_t spufs_cntl_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 361 | { |
11bac800 | 362 | return spufs_ps_fault(vmf, 0x4000, SPUFS_CNTL_MAP_SIZE); |
6df10a82 MN |
363 | } |
364 | ||
f0f37e2f | 365 | static const struct vm_operations_struct spufs_cntl_mmap_vmops = { |
b1e2270f | 366 | .fault = spufs_cntl_mmap_fault, |
6df10a82 MN |
367 | }; |
368 | ||
369 | /* | |
370 | * mmap support for problem state control area [0x4000 - 0x4fff]. | |
6df10a82 MN |
371 | */ |
372 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) | |
373 | { | |
374 | if (!(vma->vm_flags & VM_SHARED)) | |
375 | return -EINVAL; | |
376 | ||
78bde53e | 377 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 378 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
379 | |
380 | vma->vm_ops = &spufs_cntl_mmap_vmops; | |
381 | return 0; | |
382 | } | |
27d5bf2a BH |
383 | #else /* SPUFS_MMAP_4K */ |
384 | #define spufs_cntl_mmap NULL | |
385 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 386 | |
197b1a82 | 387 | static int spufs_cntl_get(void *data, u64 *val) |
6df10a82 | 388 | { |
e1dbff2b | 389 | struct spu_context *ctx = data; |
c9101bdb | 390 | int ret; |
6df10a82 | 391 | |
c9101bdb CH |
392 | ret = spu_acquire(ctx); |
393 | if (ret) | |
394 | return ret; | |
197b1a82 | 395 | *val = ctx->ops->status_read(ctx); |
e1dbff2b AB |
396 | spu_release(ctx); |
397 | ||
197b1a82 | 398 | return 0; |
6df10a82 MN |
399 | } |
400 | ||
197b1a82 | 401 | static int spufs_cntl_set(void *data, u64 val) |
6df10a82 | 402 | { |
e1dbff2b | 403 | struct spu_context *ctx = data; |
c9101bdb | 404 | int ret; |
e1dbff2b | 405 | |
c9101bdb CH |
406 | ret = spu_acquire(ctx); |
407 | if (ret) | |
408 | return ret; | |
e1dbff2b AB |
409 | ctx->ops->runcntl_write(ctx, val); |
410 | spu_release(ctx); | |
197b1a82 CH |
411 | |
412 | return 0; | |
6df10a82 MN |
413 | } |
414 | ||
e1dbff2b | 415 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
6df10a82 | 416 | { |
e1dbff2b AB |
417 | struct spufs_inode_info *i = SPUFS_I(inode); |
418 | struct spu_context *ctx = i->i_ctx; | |
419 | ||
47d3a5fa | 420 | mutex_lock(&ctx->mapping_lock); |
e1dbff2b | 421 | file->private_data = ctx; |
43c2bbd9 CH |
422 | if (!i->i_openers++) |
423 | ctx->cntl = inode->i_mapping; | |
47d3a5fa | 424 | mutex_unlock(&ctx->mapping_lock); |
8b88b099 | 425 | return simple_attr_open(inode, file, spufs_cntl_get, |
e1dbff2b | 426 | spufs_cntl_set, "0x%08lx"); |
6df10a82 MN |
427 | } |
428 | ||
43c2bbd9 CH |
429 | static int |
430 | spufs_cntl_release(struct inode *inode, struct file *file) | |
431 | { | |
432 | struct spufs_inode_info *i = SPUFS_I(inode); | |
433 | struct spu_context *ctx = i->i_ctx; | |
434 | ||
74bedc4d | 435 | simple_attr_release(inode, file); |
43c2bbd9 | 436 | |
47d3a5fa | 437 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
438 | if (!--i->i_openers) |
439 | ctx->cntl = NULL; | |
47d3a5fa | 440 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
441 | return 0; |
442 | } | |
443 | ||
5dfe4c96 | 444 | static const struct file_operations spufs_cntl_fops = { |
6df10a82 | 445 | .open = spufs_cntl_open, |
43c2bbd9 | 446 | .release = spufs_cntl_release, |
8b88b099 CH |
447 | .read = simple_attr_read, |
448 | .write = simple_attr_write, | |
658829df | 449 | .llseek = no_llseek, |
6df10a82 | 450 | .mmap = spufs_cntl_mmap, |
6df10a82 MN |
451 | }; |
452 | ||
8b3d6663 AB |
453 | static int |
454 | spufs_regs_open(struct inode *inode, struct file *file) | |
455 | { | |
456 | struct spufs_inode_info *i = SPUFS_I(inode); | |
457 | file->private_data = i->i_ctx; | |
458 | return 0; | |
459 | } | |
460 | ||
bf1ab978 DGM |
461 | static ssize_t |
462 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, | |
463 | size_t size, loff_t *pos) | |
464 | { | |
465 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
466 | return simple_read_from_buffer(buffer, size, pos, | |
467 | lscsa->gprs, sizeof lscsa->gprs); | |
468 | } | |
469 | ||
8b3d6663 AB |
470 | static ssize_t |
471 | spufs_regs_read(struct file *file, char __user *buffer, | |
472 | size_t size, loff_t *pos) | |
473 | { | |
8b3d6663 | 474 | int ret; |
bf1ab978 | 475 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 476 | |
f027faa2 JK |
477 | /* pre-check for file position: if we'd return EOF, there's no point |
478 | * causing a deschedule */ | |
479 | if (*pos >= sizeof(ctx->csa.lscsa->gprs)) | |
480 | return 0; | |
481 | ||
c9101bdb CH |
482 | ret = spu_acquire_saved(ctx); |
483 | if (ret) | |
484 | return ret; | |
bf1ab978 | 485 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
27b1ea09 | 486 | spu_release_saved(ctx); |
8b3d6663 AB |
487 | return ret; |
488 | } | |
489 | ||
490 | static ssize_t | |
491 | spufs_regs_write(struct file *file, const char __user *buffer, | |
492 | size_t size, loff_t *pos) | |
493 | { | |
494 | struct spu_context *ctx = file->private_data; | |
495 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
496 | int ret; | |
497 | ||
d219889b | 498 | if (*pos >= sizeof(lscsa->gprs)) |
8b3d6663 | 499 | return -EFBIG; |
d219889b | 500 | |
c9101bdb CH |
501 | ret = spu_acquire_saved(ctx); |
502 | if (ret) | |
503 | return ret; | |
8b3d6663 | 504 | |
63c3b9d7 AM |
505 | size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos, |
506 | buffer, size); | |
8b3d6663 | 507 | |
27b1ea09 | 508 | spu_release_saved(ctx); |
63c3b9d7 | 509 | return size; |
8b3d6663 AB |
510 | } |
511 | ||
5dfe4c96 | 512 | static const struct file_operations spufs_regs_fops = { |
8b3d6663 AB |
513 | .open = spufs_regs_open, |
514 | .read = spufs_regs_read, | |
515 | .write = spufs_regs_write, | |
67207b96 AB |
516 | .llseek = generic_file_llseek, |
517 | }; | |
518 | ||
bf1ab978 DGM |
519 | static ssize_t |
520 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, | |
521 | size_t size, loff_t * pos) | |
522 | { | |
523 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
524 | return simple_read_from_buffer(buffer, size, pos, | |
525 | &lscsa->fpcr, sizeof(lscsa->fpcr)); | |
526 | } | |
527 | ||
8b3d6663 AB |
528 | static ssize_t |
529 | spufs_fpcr_read(struct file *file, char __user * buffer, | |
530 | size_t size, loff_t * pos) | |
531 | { | |
8b3d6663 | 532 | int ret; |
bf1ab978 | 533 | struct spu_context *ctx = file->private_data; |
8b3d6663 | 534 | |
c9101bdb CH |
535 | ret = spu_acquire_saved(ctx); |
536 | if (ret) | |
537 | return ret; | |
bf1ab978 | 538 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
27b1ea09 | 539 | spu_release_saved(ctx); |
8b3d6663 AB |
540 | return ret; |
541 | } | |
542 | ||
543 | static ssize_t | |
544 | spufs_fpcr_write(struct file *file, const char __user * buffer, | |
545 | size_t size, loff_t * pos) | |
546 | { | |
547 | struct spu_context *ctx = file->private_data; | |
548 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
549 | int ret; | |
550 | ||
d219889b | 551 | if (*pos >= sizeof(lscsa->fpcr)) |
8b3d6663 | 552 | return -EFBIG; |
8b3d6663 | 553 | |
c9101bdb CH |
554 | ret = spu_acquire_saved(ctx); |
555 | if (ret) | |
556 | return ret; | |
8b3d6663 | 557 | |
63c3b9d7 AM |
558 | size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos, |
559 | buffer, size); | |
8b3d6663 | 560 | |
27b1ea09 | 561 | spu_release_saved(ctx); |
63c3b9d7 | 562 | return size; |
8b3d6663 AB |
563 | } |
564 | ||
5dfe4c96 | 565 | static const struct file_operations spufs_fpcr_fops = { |
8b3d6663 AB |
566 | .open = spufs_regs_open, |
567 | .read = spufs_fpcr_read, | |
568 | .write = spufs_fpcr_write, | |
569 | .llseek = generic_file_llseek, | |
570 | }; | |
571 | ||
67207b96 AB |
572 | /* generic open function for all pipe-like files */ |
573 | static int spufs_pipe_open(struct inode *inode, struct file *file) | |
574 | { | |
575 | struct spufs_inode_info *i = SPUFS_I(inode); | |
576 | file->private_data = i->i_ctx; | |
577 | ||
c5bf68fe | 578 | return stream_open(inode, file); |
67207b96 AB |
579 | } |
580 | ||
cdcc89bb AB |
581 | /* |
582 | * Read as many bytes from the mailbox as possible, until | |
583 | * one of the conditions becomes true: | |
584 | * | |
585 | * - no more data available in the mailbox | |
586 | * - end of the user provided buffer | |
587 | * - end of the mapped area | |
588 | */ | |
67207b96 AB |
589 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
590 | size_t len, loff_t *pos) | |
591 | { | |
8b3d6663 | 592 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
593 | u32 mbox_data, __user *udata; |
594 | ssize_t count; | |
67207b96 AB |
595 | |
596 | if (len < 4) | |
597 | return -EINVAL; | |
598 | ||
96d4f267 | 599 | if (!access_ok(buf, len)) |
cdcc89bb AB |
600 | return -EFAULT; |
601 | ||
602 | udata = (void __user *)buf; | |
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 | */ | |
619 | ret = __put_user(mbox_data, udata); | |
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; |
cdcc89bb AB |
701 | u32 ibox_data, __user *udata; |
702 | ssize_t count; | |
67207b96 AB |
703 | |
704 | if (len < 4) | |
705 | return -EINVAL; | |
706 | ||
96d4f267 | 707 | if (!access_ok(buf, len)) |
cdcc89bb AB |
708 | return -EFAULT; |
709 | ||
710 | udata = (void __user *)buf; | |
711 | ||
c9101bdb CH |
712 | count = spu_acquire(ctx); |
713 | if (count) | |
eebead5b | 714 | goto out; |
67207b96 | 715 | |
cdcc89bb AB |
716 | /* wait only for the first element */ |
717 | count = 0; | |
67207b96 | 718 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 719 | if (!spu_ibox_read(ctx, &ibox_data)) { |
cdcc89bb | 720 | count = -EAGAIN; |
eebead5b CH |
721 | goto out_unlock; |
722 | } | |
67207b96 | 723 | } else { |
cdcc89bb | 724 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
eebead5b CH |
725 | if (count) |
726 | goto out; | |
67207b96 AB |
727 | } |
728 | ||
cdcc89bb AB |
729 | /* if we can't write at all, return -EFAULT */ |
730 | count = __put_user(ibox_data, udata); | |
731 | if (count) | |
eebead5b | 732 | goto out_unlock; |
8b3d6663 | 733 | |
cdcc89bb AB |
734 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
735 | int ret; | |
736 | ret = ctx->ops->ibox_read(ctx, &ibox_data); | |
737 | if (ret == 0) | |
738 | break; | |
739 | /* | |
740 | * at the end of the mapped area, we can fault | |
741 | * but still need to return the data we have | |
742 | * read successfully so far. | |
743 | */ | |
744 | ret = __put_user(ibox_data, udata); | |
745 | if (ret) | |
746 | break; | |
747 | } | |
67207b96 | 748 | |
eebead5b | 749 | out_unlock: |
cdcc89bb | 750 | spu_release(ctx); |
eebead5b | 751 | out: |
cdcc89bb | 752 | return count; |
67207b96 AB |
753 | } |
754 | ||
8153a5ea | 755 | static __poll_t spufs_ibox_poll(struct file *file, poll_table *wait) |
67207b96 | 756 | { |
8b3d6663 | 757 | struct spu_context *ctx = file->private_data; |
8153a5ea | 758 | __poll_t mask; |
67207b96 | 759 | |
8b3d6663 | 760 | poll_wait(file, &ctx->ibox_wq, wait); |
67207b96 | 761 | |
c9101bdb CH |
762 | /* |
763 | * For now keep this uninterruptible and also ignore the rule | |
764 | * that poll should not sleep. Will be fixed later. | |
765 | */ | |
766 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 767 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLIN | EPOLLRDNORM); |
3a843d7c | 768 | spu_release(ctx); |
67207b96 AB |
769 | |
770 | return mask; | |
771 | } | |
772 | ||
5dfe4c96 | 773 | static const struct file_operations spufs_ibox_fops = { |
67207b96 AB |
774 | .open = spufs_pipe_open, |
775 | .read = spufs_ibox_read, | |
776 | .poll = spufs_ibox_poll, | |
fc15351d | 777 | .llseek = no_llseek, |
67207b96 AB |
778 | }; |
779 | ||
780 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, | |
781 | size_t len, loff_t *pos) | |
782 | { | |
8b3d6663 | 783 | struct spu_context *ctx = file->private_data; |
c9101bdb | 784 | ssize_t ret; |
67207b96 AB |
785 | u32 ibox_stat; |
786 | ||
787 | if (len < 4) | |
788 | return -EINVAL; | |
789 | ||
c9101bdb CH |
790 | ret = spu_acquire(ctx); |
791 | if (ret) | |
792 | return ret; | |
8b3d6663 AB |
793 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
794 | spu_release(ctx); | |
67207b96 AB |
795 | |
796 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) | |
797 | return -EFAULT; | |
798 | ||
799 | return 4; | |
800 | } | |
801 | ||
5dfe4c96 | 802 | static const struct file_operations spufs_ibox_stat_fops = { |
67207b96 AB |
803 | .open = spufs_pipe_open, |
804 | .read = spufs_ibox_stat_read, | |
fc15351d | 805 | .llseek = no_llseek, |
67207b96 AB |
806 | }; |
807 | ||
808 | /* low-level mailbox write */ | |
8b3d6663 | 809 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
67207b96 | 810 | { |
8b3d6663 AB |
811 | return ctx->ops->wbox_write(ctx, data); |
812 | } | |
67207b96 | 813 | |
8b3d6663 AB |
814 | /* interrupt-level wbox callback function. */ |
815 | void spufs_wbox_callback(struct spu *spu) | |
67207b96 | 816 | { |
8b3d6663 AB |
817 | struct spu_context *ctx = spu->ctx; |
818 | ||
7d7be3aa AV |
819 | if (ctx) |
820 | wake_up_all(&ctx->wbox_wq); | |
67207b96 AB |
821 | } |
822 | ||
cdcc89bb AB |
823 | /* |
824 | * Write as many bytes to the interrupt mailbox as possible, until | |
825 | * one of the conditions becomes true: | |
826 | * | |
827 | * - the mailbox is full | |
828 | * - end of the user provided buffer | |
829 | * - end of the mapped area | |
830 | * | |
831 | * If the file is opened without O_NONBLOCK, we wait here until | |
027dfac6 | 832 | * space is available, but return when we have been able to |
cdcc89bb AB |
833 | * write something. |
834 | */ | |
67207b96 AB |
835 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
836 | size_t len, loff_t *pos) | |
837 | { | |
8b3d6663 | 838 | struct spu_context *ctx = file->private_data; |
cdcc89bb AB |
839 | u32 wbox_data, __user *udata; |
840 | ssize_t count; | |
67207b96 AB |
841 | |
842 | if (len < 4) | |
843 | return -EINVAL; | |
844 | ||
cdcc89bb | 845 | udata = (void __user *)buf; |
96d4f267 | 846 | if (!access_ok(buf, len)) |
cdcc89bb AB |
847 | return -EFAULT; |
848 | ||
849 | if (__get_user(wbox_data, udata)) | |
67207b96 AB |
850 | return -EFAULT; |
851 | ||
c9101bdb CH |
852 | count = spu_acquire(ctx); |
853 | if (count) | |
eebead5b | 854 | goto out; |
8b3d6663 | 855 | |
cdcc89bb AB |
856 | /* |
857 | * make sure we can at least write one element, by waiting | |
858 | * in case of !O_NONBLOCK | |
859 | */ | |
860 | count = 0; | |
67207b96 | 861 | if (file->f_flags & O_NONBLOCK) { |
eebead5b | 862 | if (!spu_wbox_write(ctx, wbox_data)) { |
cdcc89bb | 863 | count = -EAGAIN; |
eebead5b CH |
864 | goto out_unlock; |
865 | } | |
67207b96 | 866 | } else { |
cdcc89bb | 867 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
eebead5b CH |
868 | if (count) |
869 | goto out; | |
67207b96 AB |
870 | } |
871 | ||
8b3d6663 | 872 | |
96de0e25 | 873 | /* write as much as possible */ |
cdcc89bb AB |
874 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
875 | int ret; | |
876 | ret = __get_user(wbox_data, udata); | |
877 | if (ret) | |
878 | break; | |
879 | ||
880 | ret = spu_wbox_write(ctx, wbox_data); | |
881 | if (ret == 0) | |
882 | break; | |
883 | } | |
884 | ||
eebead5b | 885 | out_unlock: |
cdcc89bb | 886 | spu_release(ctx); |
eebead5b | 887 | out: |
cdcc89bb | 888 | return count; |
67207b96 AB |
889 | } |
890 | ||
8153a5ea | 891 | static __poll_t spufs_wbox_poll(struct file *file, poll_table *wait) |
67207b96 | 892 | { |
8b3d6663 | 893 | struct spu_context *ctx = file->private_data; |
8153a5ea | 894 | __poll_t mask; |
67207b96 | 895 | |
8b3d6663 | 896 | poll_wait(file, &ctx->wbox_wq, wait); |
67207b96 | 897 | |
c9101bdb CH |
898 | /* |
899 | * For now keep this uninterruptible and also ignore the rule | |
900 | * that poll should not sleep. Will be fixed later. | |
901 | */ | |
902 | mutex_lock(&ctx->state_mutex); | |
a9a08845 | 903 | mask = ctx->ops->mbox_stat_poll(ctx, EPOLLOUT | EPOLLWRNORM); |
3a843d7c | 904 | spu_release(ctx); |
67207b96 AB |
905 | |
906 | return mask; | |
907 | } | |
908 | ||
5dfe4c96 | 909 | static const struct file_operations spufs_wbox_fops = { |
67207b96 AB |
910 | .open = spufs_pipe_open, |
911 | .write = spufs_wbox_write, | |
912 | .poll = spufs_wbox_poll, | |
fc15351d | 913 | .llseek = no_llseek, |
67207b96 AB |
914 | }; |
915 | ||
916 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, | |
917 | size_t len, loff_t *pos) | |
918 | { | |
8b3d6663 | 919 | struct spu_context *ctx = file->private_data; |
c9101bdb | 920 | ssize_t ret; |
67207b96 AB |
921 | u32 wbox_stat; |
922 | ||
923 | if (len < 4) | |
924 | return -EINVAL; | |
925 | ||
c9101bdb CH |
926 | ret = spu_acquire(ctx); |
927 | if (ret) | |
928 | return ret; | |
8b3d6663 AB |
929 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
930 | spu_release(ctx); | |
67207b96 AB |
931 | |
932 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) | |
933 | return -EFAULT; | |
934 | ||
935 | return 4; | |
936 | } | |
937 | ||
5dfe4c96 | 938 | static const struct file_operations spufs_wbox_stat_fops = { |
67207b96 AB |
939 | .open = spufs_pipe_open, |
940 | .read = spufs_wbox_stat_read, | |
fc15351d | 941 | .llseek = no_llseek, |
67207b96 AB |
942 | }; |
943 | ||
6df10a82 MN |
944 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
945 | { | |
946 | struct spufs_inode_info *i = SPUFS_I(inode); | |
947 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 948 | |
47d3a5fa | 949 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 950 | file->private_data = ctx; |
43c2bbd9 CH |
951 | if (!i->i_openers++) |
952 | ctx->signal1 = inode->i_mapping; | |
47d3a5fa | 953 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
954 | return nonseekable_open(inode, file); |
955 | } | |
956 | ||
43c2bbd9 CH |
957 | static int |
958 | spufs_signal1_release(struct inode *inode, struct file *file) | |
959 | { | |
960 | struct spufs_inode_info *i = SPUFS_I(inode); | |
961 | struct spu_context *ctx = i->i_ctx; | |
962 | ||
47d3a5fa | 963 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
964 | if (!--i->i_openers) |
965 | ctx->signal1 = NULL; | |
47d3a5fa | 966 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
967 | return 0; |
968 | } | |
969 | ||
bf1ab978 | 970 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
971 | size_t len, loff_t *pos) |
972 | { | |
17f88ceb | 973 | int ret = 0; |
67207b96 AB |
974 | u32 data; |
975 | ||
67207b96 AB |
976 | if (len < 4) |
977 | return -EINVAL; | |
978 | ||
17f88ceb DGM |
979 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
980 | data = ctx->csa.spu_chnldata_RW[3]; | |
981 | ret = 4; | |
982 | } | |
8b3d6663 | 983 | |
17f88ceb DGM |
984 | if (!ret) |
985 | goto out; | |
986 | ||
67207b96 AB |
987 | if (copy_to_user(buf, &data, 4)) |
988 | return -EFAULT; | |
989 | ||
17f88ceb DGM |
990 | out: |
991 | return ret; | |
67207b96 AB |
992 | } |
993 | ||
bf1ab978 DGM |
994 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
995 | size_t len, loff_t *pos) | |
996 | { | |
997 | int ret; | |
998 | struct spu_context *ctx = file->private_data; | |
999 | ||
c9101bdb CH |
1000 | ret = spu_acquire_saved(ctx); |
1001 | if (ret) | |
1002 | return ret; | |
bf1ab978 | 1003 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
27b1ea09 | 1004 | spu_release_saved(ctx); |
bf1ab978 DGM |
1005 | |
1006 | return ret; | |
1007 | } | |
1008 | ||
67207b96 AB |
1009 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
1010 | size_t len, loff_t *pos) | |
1011 | { | |
1012 | struct spu_context *ctx; | |
c9101bdb | 1013 | ssize_t ret; |
67207b96 AB |
1014 | u32 data; |
1015 | ||
1016 | ctx = file->private_data; | |
67207b96 AB |
1017 | |
1018 | if (len < 4) | |
1019 | return -EINVAL; | |
1020 | ||
1021 | if (copy_from_user(&data, buf, 4)) | |
1022 | return -EFAULT; | |
1023 | ||
c9101bdb CH |
1024 | ret = spu_acquire(ctx); |
1025 | if (ret) | |
1026 | return ret; | |
8b3d6663 AB |
1027 | ctx->ops->signal1_write(ctx, data); |
1028 | spu_release(ctx); | |
67207b96 AB |
1029 | |
1030 | return 4; | |
1031 | } | |
1032 | ||
e807f02c | 1033 | static vm_fault_t |
11bac800 | 1034 | spufs_signal1_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1035 | { |
87ff6090 | 1036 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1037 | return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1038 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1039 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1040 | * signal 1 and 2 area | |
1041 | */ | |
11bac800 | 1042 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1043 | #else |
1044 | #error unsupported page size | |
1045 | #endif | |
6df10a82 MN |
1046 | } |
1047 | ||
f0f37e2f | 1048 | static const struct vm_operations_struct spufs_signal1_mmap_vmops = { |
b1e2270f | 1049 | .fault = spufs_signal1_mmap_fault, |
6df10a82 MN |
1050 | }; |
1051 | ||
1052 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) | |
1053 | { | |
1054 | if (!(vma->vm_flags & VM_SHARED)) | |
1055 | return -EINVAL; | |
1056 | ||
78bde53e | 1057 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1058 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1059 | |
1060 | vma->vm_ops = &spufs_signal1_mmap_vmops; | |
1061 | return 0; | |
1062 | } | |
6df10a82 | 1063 | |
5dfe4c96 | 1064 | static const struct file_operations spufs_signal1_fops = { |
6df10a82 | 1065 | .open = spufs_signal1_open, |
43c2bbd9 | 1066 | .release = spufs_signal1_release, |
67207b96 AB |
1067 | .read = spufs_signal1_read, |
1068 | .write = spufs_signal1_write, | |
6df10a82 | 1069 | .mmap = spufs_signal1_mmap, |
fc15351d | 1070 | .llseek = no_llseek, |
67207b96 AB |
1071 | }; |
1072 | ||
d054b36f JK |
1073 | static const struct file_operations spufs_signal1_nosched_fops = { |
1074 | .open = spufs_signal1_open, | |
1075 | .release = spufs_signal1_release, | |
1076 | .write = spufs_signal1_write, | |
1077 | .mmap = spufs_signal1_mmap, | |
fc15351d | 1078 | .llseek = no_llseek, |
d054b36f JK |
1079 | }; |
1080 | ||
6df10a82 MN |
1081 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
1082 | { | |
1083 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1084 | struct spu_context *ctx = i->i_ctx; | |
43c2bbd9 | 1085 | |
47d3a5fa | 1086 | mutex_lock(&ctx->mapping_lock); |
6df10a82 | 1087 | file->private_data = ctx; |
43c2bbd9 CH |
1088 | if (!i->i_openers++) |
1089 | ctx->signal2 = inode->i_mapping; | |
47d3a5fa | 1090 | mutex_unlock(&ctx->mapping_lock); |
6df10a82 MN |
1091 | return nonseekable_open(inode, file); |
1092 | } | |
1093 | ||
43c2bbd9 CH |
1094 | static int |
1095 | spufs_signal2_release(struct inode *inode, struct file *file) | |
1096 | { | |
1097 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1098 | struct spu_context *ctx = i->i_ctx; | |
1099 | ||
47d3a5fa | 1100 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1101 | if (!--i->i_openers) |
1102 | ctx->signal2 = NULL; | |
47d3a5fa | 1103 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1104 | return 0; |
1105 | } | |
1106 | ||
bf1ab978 | 1107 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
67207b96 AB |
1108 | size_t len, loff_t *pos) |
1109 | { | |
17f88ceb | 1110 | int ret = 0; |
67207b96 AB |
1111 | u32 data; |
1112 | ||
67207b96 AB |
1113 | if (len < 4) |
1114 | return -EINVAL; | |
1115 | ||
17f88ceb DGM |
1116 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
1117 | data = ctx->csa.spu_chnldata_RW[4]; | |
1118 | ret = 4; | |
1119 | } | |
8b3d6663 | 1120 | |
17f88ceb DGM |
1121 | if (!ret) |
1122 | goto out; | |
1123 | ||
67207b96 AB |
1124 | if (copy_to_user(buf, &data, 4)) |
1125 | return -EFAULT; | |
1126 | ||
17f88ceb | 1127 | out: |
bf1ab978 DGM |
1128 | return ret; |
1129 | } | |
1130 | ||
1131 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, | |
1132 | size_t len, loff_t *pos) | |
1133 | { | |
1134 | struct spu_context *ctx = file->private_data; | |
1135 | int ret; | |
1136 | ||
c9101bdb CH |
1137 | ret = spu_acquire_saved(ctx); |
1138 | if (ret) | |
1139 | return ret; | |
bf1ab978 | 1140 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
27b1ea09 | 1141 | spu_release_saved(ctx); |
bf1ab978 DGM |
1142 | |
1143 | return ret; | |
67207b96 AB |
1144 | } |
1145 | ||
1146 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, | |
1147 | size_t len, loff_t *pos) | |
1148 | { | |
1149 | struct spu_context *ctx; | |
c9101bdb | 1150 | ssize_t ret; |
67207b96 AB |
1151 | u32 data; |
1152 | ||
1153 | ctx = file->private_data; | |
67207b96 AB |
1154 | |
1155 | if (len < 4) | |
1156 | return -EINVAL; | |
1157 | ||
1158 | if (copy_from_user(&data, buf, 4)) | |
1159 | return -EFAULT; | |
1160 | ||
c9101bdb CH |
1161 | ret = spu_acquire(ctx); |
1162 | if (ret) | |
1163 | return ret; | |
8b3d6663 AB |
1164 | ctx->ops->signal2_write(ctx, data); |
1165 | spu_release(ctx); | |
67207b96 AB |
1166 | |
1167 | return 4; | |
1168 | } | |
1169 | ||
27d5bf2a | 1170 | #if SPUFS_MMAP_4K |
e807f02c | 1171 | static vm_fault_t |
11bac800 | 1172 | spufs_signal2_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1173 | { |
87ff6090 | 1174 | #if SPUFS_SIGNAL_MAP_SIZE == 0x1000 |
11bac800 | 1175 | return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE); |
87ff6090 | 1176 | #elif SPUFS_SIGNAL_MAP_SIZE == 0x10000 |
27d5bf2a BH |
1177 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
1178 | * signal 1 and 2 area | |
1179 | */ | |
11bac800 | 1180 | return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE); |
27d5bf2a BH |
1181 | #else |
1182 | #error unsupported page size | |
1183 | #endif | |
6df10a82 MN |
1184 | } |
1185 | ||
f0f37e2f | 1186 | static const struct vm_operations_struct spufs_signal2_mmap_vmops = { |
b1e2270f | 1187 | .fault = spufs_signal2_mmap_fault, |
6df10a82 MN |
1188 | }; |
1189 | ||
1190 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) | |
1191 | { | |
1192 | if (!(vma->vm_flags & VM_SHARED)) | |
1193 | return -EINVAL; | |
1194 | ||
78bde53e | 1195 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1196 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1197 | |
1198 | vma->vm_ops = &spufs_signal2_mmap_vmops; | |
1199 | return 0; | |
1200 | } | |
27d5bf2a BH |
1201 | #else /* SPUFS_MMAP_4K */ |
1202 | #define spufs_signal2_mmap NULL | |
1203 | #endif /* !SPUFS_MMAP_4K */ | |
6df10a82 | 1204 | |
5dfe4c96 | 1205 | static const struct file_operations spufs_signal2_fops = { |
6df10a82 | 1206 | .open = spufs_signal2_open, |
43c2bbd9 | 1207 | .release = spufs_signal2_release, |
67207b96 AB |
1208 | .read = spufs_signal2_read, |
1209 | .write = spufs_signal2_write, | |
6df10a82 | 1210 | .mmap = spufs_signal2_mmap, |
fc15351d | 1211 | .llseek = no_llseek, |
67207b96 AB |
1212 | }; |
1213 | ||
d054b36f JK |
1214 | static const struct file_operations spufs_signal2_nosched_fops = { |
1215 | .open = spufs_signal2_open, | |
1216 | .release = spufs_signal2_release, | |
1217 | .write = spufs_signal2_write, | |
1218 | .mmap = spufs_signal2_mmap, | |
fc15351d | 1219 | .llseek = no_llseek, |
d054b36f JK |
1220 | }; |
1221 | ||
104f0cc2 ME |
1222 | /* |
1223 | * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the | |
1224 | * work of acquiring (or not) the SPU context before calling through | |
1225 | * to the actual get routine. The set routine is called directly. | |
1226 | */ | |
1227 | #define SPU_ATTR_NOACQUIRE 0 | |
1228 | #define SPU_ATTR_ACQUIRE 1 | |
1229 | #define SPU_ATTR_ACQUIRE_SAVED 2 | |
1230 | ||
1231 | #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ | |
197b1a82 | 1232 | static int __##__get(void *data, u64 *val) \ |
104f0cc2 ME |
1233 | { \ |
1234 | struct spu_context *ctx = data; \ | |
c9101bdb | 1235 | int ret = 0; \ |
104f0cc2 ME |
1236 | \ |
1237 | if (__acquire == SPU_ATTR_ACQUIRE) { \ | |
c9101bdb CH |
1238 | ret = spu_acquire(ctx); \ |
1239 | if (ret) \ | |
1240 | return ret; \ | |
197b1a82 | 1241 | *val = __get(ctx); \ |
104f0cc2 ME |
1242 | spu_release(ctx); \ |
1243 | } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ | |
c9101bdb CH |
1244 | ret = spu_acquire_saved(ctx); \ |
1245 | if (ret) \ | |
1246 | return ret; \ | |
197b1a82 | 1247 | *val = __get(ctx); \ |
104f0cc2 ME |
1248 | spu_release_saved(ctx); \ |
1249 | } else \ | |
197b1a82 | 1250 | *val = __get(ctx); \ |
104f0cc2 | 1251 | \ |
197b1a82 | 1252 | return 0; \ |
104f0cc2 | 1253 | } \ |
197b1a82 | 1254 | DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); |
104f0cc2 | 1255 | |
197b1a82 | 1256 | static int spufs_signal1_type_set(void *data, u64 val) |
67207b96 AB |
1257 | { |
1258 | struct spu_context *ctx = data; | |
c9101bdb | 1259 | int ret; |
67207b96 | 1260 | |
c9101bdb CH |
1261 | ret = spu_acquire(ctx); |
1262 | if (ret) | |
1263 | return ret; | |
8b3d6663 AB |
1264 | ctx->ops->signal1_type_set(ctx, val); |
1265 | spu_release(ctx); | |
197b1a82 CH |
1266 | |
1267 | return 0; | |
67207b96 AB |
1268 | } |
1269 | ||
104f0cc2 | 1270 | static u64 spufs_signal1_type_get(struct spu_context *ctx) |
bf1ab978 | 1271 | { |
bf1ab978 DGM |
1272 | return ctx->ops->signal1_type_get(ctx); |
1273 | } | |
104f0cc2 | 1274 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
af8b44e0 | 1275 | spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
bf1ab978 | 1276 | |
67207b96 | 1277 | |
197b1a82 | 1278 | static int spufs_signal2_type_set(void *data, u64 val) |
67207b96 AB |
1279 | { |
1280 | struct spu_context *ctx = data; | |
c9101bdb | 1281 | int ret; |
67207b96 | 1282 | |
c9101bdb CH |
1283 | ret = spu_acquire(ctx); |
1284 | if (ret) | |
1285 | return ret; | |
8b3d6663 AB |
1286 | ctx->ops->signal2_type_set(ctx, val); |
1287 | spu_release(ctx); | |
197b1a82 CH |
1288 | |
1289 | return 0; | |
67207b96 AB |
1290 | } |
1291 | ||
104f0cc2 | 1292 | static u64 spufs_signal2_type_get(struct spu_context *ctx) |
bf1ab978 | 1293 | { |
bf1ab978 DGM |
1294 | return ctx->ops->signal2_type_get(ctx); |
1295 | } | |
104f0cc2 | 1296 | DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
af8b44e0 | 1297 | spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE); |
67207b96 | 1298 | |
27d5bf2a | 1299 | #if SPUFS_MMAP_4K |
e807f02c | 1300 | static vm_fault_t |
11bac800 | 1301 | spufs_mss_mmap_fault(struct vm_fault *vmf) |
d9379c4b | 1302 | { |
11bac800 | 1303 | return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE); |
d9379c4b AB |
1304 | } |
1305 | ||
f0f37e2f | 1306 | static const struct vm_operations_struct spufs_mss_mmap_vmops = { |
b1e2270f | 1307 | .fault = spufs_mss_mmap_fault, |
d9379c4b AB |
1308 | }; |
1309 | ||
1310 | /* | |
1311 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
d9379c4b AB |
1312 | */ |
1313 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) | |
1314 | { | |
1315 | if (!(vma->vm_flags & VM_SHARED)) | |
1316 | return -EINVAL; | |
1317 | ||
78bde53e | 1318 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1319 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
d9379c4b AB |
1320 | |
1321 | vma->vm_ops = &spufs_mss_mmap_vmops; | |
1322 | return 0; | |
1323 | } | |
27d5bf2a BH |
1324 | #else /* SPUFS_MMAP_4K */ |
1325 | #define spufs_mss_mmap NULL | |
1326 | #endif /* !SPUFS_MMAP_4K */ | |
d9379c4b AB |
1327 | |
1328 | static int spufs_mss_open(struct inode *inode, struct file *file) | |
1329 | { | |
1330 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1331 | struct spu_context *ctx = i->i_ctx; |
d9379c4b AB |
1332 | |
1333 | file->private_data = i->i_ctx; | |
43c2bbd9 | 1334 | |
47d3a5fa | 1335 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1336 | if (!i->i_openers++) |
1337 | ctx->mss = inode->i_mapping; | |
47d3a5fa | 1338 | mutex_unlock(&ctx->mapping_lock); |
d9379c4b AB |
1339 | return nonseekable_open(inode, file); |
1340 | } | |
1341 | ||
43c2bbd9 CH |
1342 | static int |
1343 | spufs_mss_release(struct inode *inode, struct file *file) | |
1344 | { | |
1345 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1346 | struct spu_context *ctx = i->i_ctx; | |
1347 | ||
47d3a5fa | 1348 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1349 | if (!--i->i_openers) |
1350 | ctx->mss = NULL; | |
47d3a5fa | 1351 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1352 | return 0; |
1353 | } | |
1354 | ||
5dfe4c96 | 1355 | static const struct file_operations spufs_mss_fops = { |
d9379c4b | 1356 | .open = spufs_mss_open, |
43c2bbd9 | 1357 | .release = spufs_mss_release, |
d9379c4b | 1358 | .mmap = spufs_mss_mmap, |
fc15351d | 1359 | .llseek = no_llseek, |
27d5bf2a BH |
1360 | }; |
1361 | ||
e807f02c | 1362 | static vm_fault_t |
11bac800 | 1363 | spufs_psmap_mmap_fault(struct vm_fault *vmf) |
27d5bf2a | 1364 | { |
11bac800 | 1365 | return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE); |
27d5bf2a BH |
1366 | } |
1367 | ||
f0f37e2f | 1368 | static const struct vm_operations_struct spufs_psmap_mmap_vmops = { |
b1e2270f | 1369 | .fault = spufs_psmap_mmap_fault, |
27d5bf2a BH |
1370 | }; |
1371 | ||
1372 | /* | |
1373 | * mmap support for full problem state area [0x00000 - 0x1ffff]. | |
1374 | */ | |
1375 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) | |
1376 | { | |
1377 | if (!(vma->vm_flags & VM_SHARED)) | |
1378 | return -EINVAL; | |
1379 | ||
78bde53e | 1380 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1381 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
27d5bf2a BH |
1382 | |
1383 | vma->vm_ops = &spufs_psmap_mmap_vmops; | |
1384 | return 0; | |
1385 | } | |
1386 | ||
1387 | static int spufs_psmap_open(struct inode *inode, struct file *file) | |
1388 | { | |
1389 | struct spufs_inode_info *i = SPUFS_I(inode); | |
17e0e270 | 1390 | struct spu_context *ctx = i->i_ctx; |
27d5bf2a | 1391 | |
47d3a5fa | 1392 | mutex_lock(&ctx->mapping_lock); |
27d5bf2a | 1393 | file->private_data = i->i_ctx; |
43c2bbd9 CH |
1394 | if (!i->i_openers++) |
1395 | ctx->psmap = inode->i_mapping; | |
47d3a5fa | 1396 | mutex_unlock(&ctx->mapping_lock); |
27d5bf2a BH |
1397 | return nonseekable_open(inode, file); |
1398 | } | |
1399 | ||
43c2bbd9 CH |
1400 | static int |
1401 | spufs_psmap_release(struct inode *inode, struct file *file) | |
1402 | { | |
1403 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1404 | struct spu_context *ctx = i->i_ctx; | |
1405 | ||
47d3a5fa | 1406 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1407 | if (!--i->i_openers) |
1408 | ctx->psmap = NULL; | |
47d3a5fa | 1409 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1410 | return 0; |
1411 | } | |
1412 | ||
5dfe4c96 | 1413 | static const struct file_operations spufs_psmap_fops = { |
27d5bf2a | 1414 | .open = spufs_psmap_open, |
43c2bbd9 | 1415 | .release = spufs_psmap_release, |
27d5bf2a | 1416 | .mmap = spufs_psmap_mmap, |
fc15351d | 1417 | .llseek = no_llseek, |
d9379c4b AB |
1418 | }; |
1419 | ||
1420 | ||
27d5bf2a | 1421 | #if SPUFS_MMAP_4K |
e807f02c | 1422 | static vm_fault_t |
11bac800 | 1423 | spufs_mfc_mmap_fault(struct vm_fault *vmf) |
6df10a82 | 1424 | { |
11bac800 | 1425 | return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE); |
6df10a82 MN |
1426 | } |
1427 | ||
f0f37e2f | 1428 | static const struct vm_operations_struct spufs_mfc_mmap_vmops = { |
b1e2270f | 1429 | .fault = spufs_mfc_mmap_fault, |
6df10a82 MN |
1430 | }; |
1431 | ||
1432 | /* | |
1433 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. | |
6df10a82 MN |
1434 | */ |
1435 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) | |
1436 | { | |
1437 | if (!(vma->vm_flags & VM_SHARED)) | |
1438 | return -EINVAL; | |
1439 | ||
78bde53e | 1440 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
64b3d0e8 | 1441 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
6df10a82 MN |
1442 | |
1443 | vma->vm_ops = &spufs_mfc_mmap_vmops; | |
1444 | return 0; | |
1445 | } | |
27d5bf2a BH |
1446 | #else /* SPUFS_MMAP_4K */ |
1447 | #define spufs_mfc_mmap NULL | |
1448 | #endif /* !SPUFS_MMAP_4K */ | |
a33a7d73 AB |
1449 | |
1450 | static int spufs_mfc_open(struct inode *inode, struct file *file) | |
1451 | { | |
1452 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1453 | struct spu_context *ctx = i->i_ctx; | |
1454 | ||
1455 | /* we don't want to deal with DMA into other processes */ | |
1456 | if (ctx->owner != current->mm) | |
1457 | return -EINVAL; | |
1458 | ||
1459 | if (atomic_read(&inode->i_count) != 1) | |
1460 | return -EBUSY; | |
1461 | ||
47d3a5fa | 1462 | mutex_lock(&ctx->mapping_lock); |
a33a7d73 | 1463 | file->private_data = ctx; |
43c2bbd9 CH |
1464 | if (!i->i_openers++) |
1465 | ctx->mfc = inode->i_mapping; | |
47d3a5fa | 1466 | mutex_unlock(&ctx->mapping_lock); |
a33a7d73 AB |
1467 | return nonseekable_open(inode, file); |
1468 | } | |
1469 | ||
43c2bbd9 CH |
1470 | static int |
1471 | spufs_mfc_release(struct inode *inode, struct file *file) | |
1472 | { | |
1473 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1474 | struct spu_context *ctx = i->i_ctx; | |
1475 | ||
47d3a5fa | 1476 | mutex_lock(&ctx->mapping_lock); |
43c2bbd9 CH |
1477 | if (!--i->i_openers) |
1478 | ctx->mfc = NULL; | |
47d3a5fa | 1479 | mutex_unlock(&ctx->mapping_lock); |
43c2bbd9 CH |
1480 | return 0; |
1481 | } | |
1482 | ||
a33a7d73 AB |
1483 | /* interrupt-level mfc callback function. */ |
1484 | void spufs_mfc_callback(struct spu *spu) | |
1485 | { | |
1486 | struct spu_context *ctx = spu->ctx; | |
1487 | ||
7d7be3aa AV |
1488 | if (ctx) |
1489 | wake_up_all(&ctx->mfc_wq); | |
a33a7d73 AB |
1490 | } |
1491 | ||
1492 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) | |
1493 | { | |
1494 | /* See if there is one tag group is complete */ | |
1495 | /* FIXME we need locking around tagwait */ | |
1496 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; | |
1497 | ctx->tagwait &= ~*status; | |
1498 | if (*status) | |
1499 | return 1; | |
1500 | ||
1501 | /* enable interrupt waiting for any tag group, | |
1502 | may silently fail if interrupts are already enabled */ | |
1503 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, | |
1508 | size_t size, loff_t *pos) | |
1509 | { | |
1510 | struct spu_context *ctx = file->private_data; | |
1511 | int ret = -EINVAL; | |
1512 | u32 status; | |
1513 | ||
1514 | if (size != 4) | |
1515 | goto out; | |
1516 | ||
c9101bdb CH |
1517 | ret = spu_acquire(ctx); |
1518 | if (ret) | |
1519 | return ret; | |
1520 | ||
1521 | ret = -EINVAL; | |
a33a7d73 AB |
1522 | if (file->f_flags & O_NONBLOCK) { |
1523 | status = ctx->ops->read_mfc_tagstatus(ctx); | |
1524 | if (!(status & ctx->tagwait)) | |
1525 | ret = -EAGAIN; | |
1526 | else | |
c9101bdb | 1527 | /* XXX(hch): shouldn't we clear ret here? */ |
a33a7d73 AB |
1528 | ctx->tagwait &= ~status; |
1529 | } else { | |
1530 | ret = spufs_wait(ctx->mfc_wq, | |
1531 | spufs_read_mfc_tagstatus(ctx, &status)); | |
eebead5b CH |
1532 | if (ret) |
1533 | goto out; | |
a33a7d73 AB |
1534 | } |
1535 | spu_release(ctx); | |
1536 | ||
a33a7d73 AB |
1537 | ret = 4; |
1538 | if (copy_to_user(buffer, &status, 4)) | |
1539 | ret = -EFAULT; | |
1540 | ||
1541 | out: | |
1542 | return ret; | |
1543 | } | |
1544 | ||
1545 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) | |
1546 | { | |
9477e455 | 1547 | pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa, |
a33a7d73 AB |
1548 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
1549 | ||
1550 | switch (cmd->cmd) { | |
1551 | case MFC_PUT_CMD: | |
1552 | case MFC_PUTF_CMD: | |
1553 | case MFC_PUTB_CMD: | |
1554 | case MFC_GET_CMD: | |
1555 | case MFC_GETF_CMD: | |
1556 | case MFC_GETB_CMD: | |
1557 | break; | |
1558 | default: | |
1559 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); | |
1560 | return -EIO; | |
1561 | } | |
1562 | ||
1563 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { | |
9477e455 | 1564 | pr_debug("invalid DMA alignment, ea %llx lsa %x\n", |
a33a7d73 AB |
1565 | cmd->ea, cmd->lsa); |
1566 | return -EIO; | |
1567 | } | |
1568 | ||
1569 | switch (cmd->size & 0xf) { | |
1570 | case 1: | |
1571 | break; | |
1572 | case 2: | |
1573 | if (cmd->lsa & 1) | |
1574 | goto error; | |
1575 | break; | |
1576 | case 4: | |
1577 | if (cmd->lsa & 3) | |
1578 | goto error; | |
1579 | break; | |
1580 | case 8: | |
1581 | if (cmd->lsa & 7) | |
1582 | goto error; | |
1583 | break; | |
1584 | case 0: | |
1585 | if (cmd->lsa & 15) | |
1586 | goto error; | |
1587 | break; | |
1588 | error: | |
1589 | default: | |
1590 | pr_debug("invalid DMA alignment %x for size %x\n", | |
1591 | cmd->lsa & 0xf, cmd->size); | |
1592 | return -EIO; | |
1593 | } | |
1594 | ||
1595 | if (cmd->size > 16 * 1024) { | |
1596 | pr_debug("invalid DMA size %x\n", cmd->size); | |
1597 | return -EIO; | |
1598 | } | |
1599 | ||
1600 | if (cmd->tag & 0xfff0) { | |
1601 | /* we reserve the higher tag numbers for kernel use */ | |
1602 | pr_debug("invalid DMA tag\n"); | |
1603 | return -EIO; | |
1604 | } | |
1605 | ||
1606 | if (cmd->class) { | |
1607 | /* not supported in this version */ | |
1608 | pr_debug("invalid DMA class\n"); | |
1609 | return -EIO; | |
1610 | } | |
1611 | ||
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | static int spu_send_mfc_command(struct spu_context *ctx, | |
1616 | struct mfc_dma_command cmd, | |
1617 | int *error) | |
1618 | { | |
1619 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1620 | if (*error == -EAGAIN) { | |
1621 | /* wait for any tag group to complete | |
1622 | so we have space for the new command */ | |
1623 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); | |
1624 | /* try again, because the queue might be | |
1625 | empty again */ | |
1626 | *error = ctx->ops->send_mfc_command(ctx, &cmd); | |
1627 | if (*error == -EAGAIN) | |
1628 | return 0; | |
1629 | } | |
1630 | return 1; | |
1631 | } | |
1632 | ||
1633 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, | |
1634 | size_t size, loff_t *pos) | |
1635 | { | |
1636 | struct spu_context *ctx = file->private_data; | |
1637 | struct mfc_dma_command cmd; | |
1638 | int ret = -EINVAL; | |
1639 | ||
1640 | if (size != sizeof cmd) | |
1641 | goto out; | |
1642 | ||
1643 | ret = -EFAULT; | |
1644 | if (copy_from_user(&cmd, buffer, sizeof cmd)) | |
1645 | goto out; | |
1646 | ||
1647 | ret = spufs_check_valid_dma(&cmd); | |
1648 | if (ret) | |
1649 | goto out; | |
1650 | ||
c9101bdb CH |
1651 | ret = spu_acquire(ctx); |
1652 | if (ret) | |
1653 | goto out; | |
1654 | ||
33bfd7a7 | 1655 | ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE); |
577f8f10 AM |
1656 | if (ret) |
1657 | goto out; | |
1658 | ||
a33a7d73 AB |
1659 | if (file->f_flags & O_NONBLOCK) { |
1660 | ret = ctx->ops->send_mfc_command(ctx, &cmd); | |
1661 | } else { | |
1662 | int status; | |
1663 | ret = spufs_wait(ctx->mfc_wq, | |
1664 | spu_send_mfc_command(ctx, cmd, &status)); | |
eebead5b CH |
1665 | if (ret) |
1666 | goto out; | |
a33a7d73 AB |
1667 | if (status) |
1668 | ret = status; | |
1669 | } | |
a33a7d73 AB |
1670 | |
1671 | if (ret) | |
933b0e35 | 1672 | goto out_unlock; |
a33a7d73 AB |
1673 | |
1674 | ctx->tagwait |= 1 << cmd.tag; | |
3692dc66 | 1675 | ret = size; |
a33a7d73 | 1676 | |
933b0e35 KA |
1677 | out_unlock: |
1678 | spu_release(ctx); | |
a33a7d73 AB |
1679 | out: |
1680 | return ret; | |
1681 | } | |
1682 | ||
8153a5ea | 1683 | static __poll_t spufs_mfc_poll(struct file *file,poll_table *wait) |
a33a7d73 AB |
1684 | { |
1685 | struct spu_context *ctx = file->private_data; | |
1686 | u32 free_elements, tagstatus; | |
8153a5ea | 1687 | __poll_t mask; |
a33a7d73 | 1688 | |
933b0e35 KA |
1689 | poll_wait(file, &ctx->mfc_wq, wait); |
1690 | ||
c9101bdb CH |
1691 | /* |
1692 | * For now keep this uninterruptible and also ignore the rule | |
1693 | * that poll should not sleep. Will be fixed later. | |
1694 | */ | |
1695 | mutex_lock(&ctx->state_mutex); | |
a33a7d73 AB |
1696 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
1697 | free_elements = ctx->ops->get_mfc_free_elements(ctx); | |
1698 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); | |
1699 | spu_release(ctx); | |
1700 | ||
a33a7d73 AB |
1701 | mask = 0; |
1702 | if (free_elements & 0xffff) | |
a9a08845 | 1703 | mask |= EPOLLOUT | EPOLLWRNORM; |
a33a7d73 | 1704 | if (tagstatus & ctx->tagwait) |
a9a08845 | 1705 | mask |= EPOLLIN | EPOLLRDNORM; |
a33a7d73 | 1706 | |
e48b1b45 | 1707 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__, |
a33a7d73 AB |
1708 | free_elements, tagstatus, ctx->tagwait); |
1709 | ||
1710 | return mask; | |
1711 | } | |
1712 | ||
73b6af8a | 1713 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
a33a7d73 AB |
1714 | { |
1715 | struct spu_context *ctx = file->private_data; | |
1716 | int ret; | |
1717 | ||
c9101bdb CH |
1718 | ret = spu_acquire(ctx); |
1719 | if (ret) | |
eebead5b | 1720 | goto out; |
a33a7d73 AB |
1721 | #if 0 |
1722 | /* this currently hangs */ | |
1723 | ret = spufs_wait(ctx->mfc_wq, | |
1724 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); | |
1725 | if (ret) | |
1726 | goto out; | |
1727 | ret = spufs_wait(ctx->mfc_wq, | |
1728 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); | |
eebead5b CH |
1729 | if (ret) |
1730 | goto out; | |
a33a7d73 AB |
1731 | #else |
1732 | ret = 0; | |
1733 | #endif | |
1734 | spu_release(ctx); | |
eebead5b | 1735 | out: |
a33a7d73 AB |
1736 | return ret; |
1737 | } | |
1738 | ||
02c24a82 JB |
1739 | static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
1740 | { | |
496ad9aa | 1741 | struct inode *inode = file_inode(file); |
3b49c9a1 | 1742 | int err = file_write_and_wait_range(file, start, end); |
02c24a82 | 1743 | if (!err) { |
5955102c | 1744 | inode_lock(inode); |
02c24a82 | 1745 | err = spufs_mfc_flush(file, NULL); |
5955102c | 1746 | inode_unlock(inode); |
02c24a82 JB |
1747 | } |
1748 | return err; | |
a33a7d73 AB |
1749 | } |
1750 | ||
5dfe4c96 | 1751 | static const struct file_operations spufs_mfc_fops = { |
a33a7d73 | 1752 | .open = spufs_mfc_open, |
43c2bbd9 | 1753 | .release = spufs_mfc_release, |
a33a7d73 AB |
1754 | .read = spufs_mfc_read, |
1755 | .write = spufs_mfc_write, | |
1756 | .poll = spufs_mfc_poll, | |
1757 | .flush = spufs_mfc_flush, | |
1758 | .fsync = spufs_mfc_fsync, | |
6df10a82 | 1759 | .mmap = spufs_mfc_mmap, |
fc15351d | 1760 | .llseek = no_llseek, |
a33a7d73 AB |
1761 | }; |
1762 | ||
197b1a82 | 1763 | static int spufs_npc_set(void *data, u64 val) |
67207b96 AB |
1764 | { |
1765 | struct spu_context *ctx = data; | |
c9101bdb CH |
1766 | int ret; |
1767 | ||
1768 | ret = spu_acquire(ctx); | |
1769 | if (ret) | |
1770 | return ret; | |
8b3d6663 AB |
1771 | ctx->ops->npc_write(ctx, val); |
1772 | spu_release(ctx); | |
197b1a82 CH |
1773 | |
1774 | return 0; | |
67207b96 AB |
1775 | } |
1776 | ||
104f0cc2 | 1777 | static u64 spufs_npc_get(struct spu_context *ctx) |
78810ff6 ME |
1778 | { |
1779 | return ctx->ops->npc_read(ctx); | |
1780 | } | |
104f0cc2 ME |
1781 | DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
1782 | "0x%llx\n", SPU_ATTR_ACQUIRE); | |
67207b96 | 1783 | |
197b1a82 | 1784 | static int spufs_decr_set(void *data, u64 val) |
8b3d6663 AB |
1785 | { |
1786 | struct spu_context *ctx = data; | |
1787 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1788 | int ret; |
1789 | ||
1790 | ret = spu_acquire_saved(ctx); | |
1791 | if (ret) | |
1792 | return ret; | |
8b3d6663 | 1793 | lscsa->decr.slot[0] = (u32) val; |
27b1ea09 | 1794 | spu_release_saved(ctx); |
197b1a82 CH |
1795 | |
1796 | return 0; | |
8b3d6663 AB |
1797 | } |
1798 | ||
104f0cc2 | 1799 | static u64 spufs_decr_get(struct spu_context *ctx) |
8b3d6663 | 1800 | { |
8b3d6663 | 1801 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1802 | return lscsa->decr.slot[0]; |
1803 | } | |
104f0cc2 ME |
1804 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
1805 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1806 | |
197b1a82 | 1807 | static int spufs_decr_status_set(void *data, u64 val) |
8b3d6663 AB |
1808 | { |
1809 | struct spu_context *ctx = data; | |
c9101bdb CH |
1810 | int ret; |
1811 | ||
1812 | ret = spu_acquire_saved(ctx); | |
1813 | if (ret) | |
1814 | return ret; | |
d40a01d4 MN |
1815 | if (val) |
1816 | ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; | |
1817 | else | |
1818 | ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; | |
27b1ea09 | 1819 | spu_release_saved(ctx); |
197b1a82 CH |
1820 | |
1821 | return 0; | |
8b3d6663 AB |
1822 | } |
1823 | ||
104f0cc2 | 1824 | static u64 spufs_decr_status_get(struct spu_context *ctx) |
8b3d6663 | 1825 | { |
d40a01d4 MN |
1826 | if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) |
1827 | return SPU_DECR_STATUS_RUNNING; | |
1828 | else | |
1829 | return 0; | |
bf1ab978 | 1830 | } |
104f0cc2 ME |
1831 | DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
1832 | spufs_decr_status_set, "0x%llx\n", | |
1833 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1834 | |
197b1a82 | 1835 | static int spufs_event_mask_set(void *data, u64 val) |
8b3d6663 AB |
1836 | { |
1837 | struct spu_context *ctx = data; | |
1838 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1839 | int ret; |
1840 | ||
1841 | ret = spu_acquire_saved(ctx); | |
1842 | if (ret) | |
1843 | return ret; | |
8b3d6663 | 1844 | lscsa->event_mask.slot[0] = (u32) val; |
27b1ea09 | 1845 | spu_release_saved(ctx); |
197b1a82 CH |
1846 | |
1847 | return 0; | |
8b3d6663 AB |
1848 | } |
1849 | ||
104f0cc2 | 1850 | static u64 spufs_event_mask_get(struct spu_context *ctx) |
8b3d6663 | 1851 | { |
8b3d6663 | 1852 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
bf1ab978 DGM |
1853 | return lscsa->event_mask.slot[0]; |
1854 | } | |
1855 | ||
104f0cc2 ME |
1856 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
1857 | spufs_event_mask_set, "0x%llx\n", | |
1858 | SPU_ATTR_ACQUIRE_SAVED); | |
8b3d6663 | 1859 | |
104f0cc2 | 1860 | static u64 spufs_event_status_get(struct spu_context *ctx) |
b9e3bd77 | 1861 | { |
b9e3bd77 | 1862 | struct spu_state *state = &ctx->csa; |
b9e3bd77 | 1863 | u64 stat; |
b9e3bd77 DGM |
1864 | stat = state->spu_chnlcnt_RW[0]; |
1865 | if (stat) | |
bf1ab978 DGM |
1866 | return state->spu_chnldata_RW[0]; |
1867 | return 0; | |
1868 | } | |
104f0cc2 ME |
1869 | DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
1870 | NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
b9e3bd77 | 1871 | |
197b1a82 | 1872 | static int spufs_srr0_set(void *data, u64 val) |
8b3d6663 AB |
1873 | { |
1874 | struct spu_context *ctx = data; | |
1875 | struct spu_lscsa *lscsa = ctx->csa.lscsa; | |
c9101bdb CH |
1876 | int ret; |
1877 | ||
1878 | ret = spu_acquire_saved(ctx); | |
1879 | if (ret) | |
1880 | return ret; | |
8b3d6663 | 1881 | lscsa->srr0.slot[0] = (u32) val; |
27b1ea09 | 1882 | spu_release_saved(ctx); |
197b1a82 CH |
1883 | |
1884 | return 0; | |
8b3d6663 AB |
1885 | } |
1886 | ||
104f0cc2 | 1887 | static u64 spufs_srr0_get(struct spu_context *ctx) |
8b3d6663 | 1888 | { |
8b3d6663 | 1889 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
104f0cc2 | 1890 | return lscsa->srr0.slot[0]; |
8b3d6663 | 1891 | } |
104f0cc2 ME |
1892 | DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
1893 | "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) | |
8b3d6663 | 1894 | |
104f0cc2 | 1895 | static u64 spufs_id_get(struct spu_context *ctx) |
7b1a7014 | 1896 | { |
7b1a7014 AB |
1897 | u64 num; |
1898 | ||
7b1a7014 AB |
1899 | if (ctx->state == SPU_STATE_RUNNABLE) |
1900 | num = ctx->spu->number; | |
1901 | else | |
1902 | num = (unsigned int)-1; | |
7b1a7014 AB |
1903 | |
1904 | return num; | |
1905 | } | |
104f0cc2 ME |
1906 | DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", |
1907 | SPU_ATTR_ACQUIRE) | |
7b1a7014 | 1908 | |
104f0cc2 | 1909 | static u64 spufs_object_id_get(struct spu_context *ctx) |
bf1ab978 DGM |
1910 | { |
1911 | /* FIXME: Should there really be no locking here? */ | |
104f0cc2 | 1912 | return ctx->object_id; |
bf1ab978 DGM |
1913 | } |
1914 | ||
197b1a82 | 1915 | static int spufs_object_id_set(void *data, u64 id) |
86767277 AB |
1916 | { |
1917 | struct spu_context *ctx = data; | |
1918 | ctx->object_id = id; | |
197b1a82 CH |
1919 | |
1920 | return 0; | |
86767277 AB |
1921 | } |
1922 | ||
104f0cc2 ME |
1923 | DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
1924 | spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); | |
86767277 | 1925 | |
104f0cc2 | 1926 | static u64 spufs_lslr_get(struct spu_context *ctx) |
bf1ab978 | 1927 | { |
bf1ab978 DGM |
1928 | return ctx->csa.priv2.spu_lslr_RW; |
1929 | } | |
104f0cc2 ME |
1930 | DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", |
1931 | SPU_ATTR_ACQUIRE_SAVED); | |
b9e3bd77 DGM |
1932 | |
1933 | static int spufs_info_open(struct inode *inode, struct file *file) | |
1934 | { | |
1935 | struct spufs_inode_info *i = SPUFS_I(inode); | |
1936 | struct spu_context *ctx = i->i_ctx; | |
1937 | file->private_data = ctx; | |
1938 | return 0; | |
1939 | } | |
1940 | ||
cbe709c1 BH |
1941 | static int spufs_caps_show(struct seq_file *s, void *private) |
1942 | { | |
1943 | struct spu_context *ctx = s->private; | |
1944 | ||
1945 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) | |
1946 | seq_puts(s, "sched\n"); | |
1947 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) | |
1948 | seq_puts(s, "step\n"); | |
1949 | return 0; | |
1950 | } | |
1951 | ||
1952 | static int spufs_caps_open(struct inode *inode, struct file *file) | |
1953 | { | |
1954 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); | |
1955 | } | |
1956 | ||
1957 | static const struct file_operations spufs_caps_fops = { | |
1958 | .open = spufs_caps_open, | |
1959 | .read = seq_read, | |
1960 | .llseek = seq_lseek, | |
1961 | .release = single_release, | |
1962 | }; | |
1963 | ||
bf1ab978 DGM |
1964 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
1965 | char __user *buf, size_t len, loff_t *pos) | |
1966 | { | |
bf1ab978 DGM |
1967 | u32 data; |
1968 | ||
cbea9238 JK |
1969 | /* EOF if there's no entry in the mbox */ |
1970 | if (!(ctx->csa.prob.mb_stat_R & 0x0000ff)) | |
1971 | return 0; | |
1972 | ||
1973 | data = ctx->csa.prob.pu_mb_R; | |
bf1ab978 DGM |
1974 | |
1975 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
1976 | } | |
1977 | ||
69a2f00c DGM |
1978 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
1979 | size_t len, loff_t *pos) | |
1980 | { | |
1981 | struct spu_context *ctx = file->private_data; | |
35534629 JK |
1982 | u32 stat, data; |
1983 | int ret; | |
69a2f00c | 1984 | |
96d4f267 | 1985 | if (!access_ok(buf, len)) |
69a2f00c DGM |
1986 | return -EFAULT; |
1987 | ||
c9101bdb CH |
1988 | ret = spu_acquire_saved(ctx); |
1989 | if (ret) | |
1990 | return ret; | |
69a2f00c | 1991 | spin_lock(&ctx->csa.register_lock); |
35534629 JK |
1992 | stat = ctx->csa.prob.mb_stat_R; |
1993 | data = ctx->csa.prob.pu_mb_R; | |
69a2f00c | 1994 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 1995 | spu_release_saved(ctx); |
69a2f00c | 1996 | |
35534629 JK |
1997 | /* EOF if there's no entry in the mbox */ |
1998 | if (!(stat & 0x0000ff)) | |
1999 | return 0; | |
2000 | ||
2001 | return simple_read_from_buffer(buf, len, pos, &data, sizeof(data)); | |
69a2f00c DGM |
2002 | } |
2003 | ||
5dfe4c96 | 2004 | static const struct file_operations spufs_mbox_info_fops = { |
69a2f00c DGM |
2005 | .open = spufs_info_open, |
2006 | .read = spufs_mbox_info_read, | |
2007 | .llseek = generic_file_llseek, | |
2008 | }; | |
2009 | ||
bf1ab978 DGM |
2010 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
2011 | char __user *buf, size_t len, loff_t *pos) | |
2012 | { | |
bf1ab978 DGM |
2013 | u32 data; |
2014 | ||
cbea9238 JK |
2015 | /* EOF if there's no entry in the ibox */ |
2016 | if (!(ctx->csa.prob.mb_stat_R & 0xff0000)) | |
2017 | return 0; | |
2018 | ||
2019 | data = ctx->csa.priv2.puint_mb_R; | |
bf1ab978 DGM |
2020 | |
2021 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); | |
2022 | } | |
2023 | ||
69a2f00c DGM |
2024 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
2025 | size_t len, loff_t *pos) | |
2026 | { | |
2027 | struct spu_context *ctx = file->private_data; | |
35534629 | 2028 | u32 stat, data; |
bf1ab978 | 2029 | int ret; |
69a2f00c | 2030 | |
96d4f267 | 2031 | if (!access_ok(buf, len)) |
69a2f00c DGM |
2032 | return -EFAULT; |
2033 | ||
c9101bdb CH |
2034 | ret = spu_acquire_saved(ctx); |
2035 | if (ret) | |
2036 | return ret; | |
69a2f00c | 2037 | spin_lock(&ctx->csa.register_lock); |
35534629 JK |
2038 | stat = ctx->csa.prob.mb_stat_R; |
2039 | data = ctx->csa.priv2.puint_mb_R; | |
69a2f00c | 2040 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2041 | spu_release_saved(ctx); |
69a2f00c | 2042 | |
35534629 JK |
2043 | /* EOF if there's no entry in the ibox */ |
2044 | if (!(stat & 0xff0000)) | |
2045 | return 0; | |
2046 | ||
2047 | return simple_read_from_buffer(buf, len, pos, &data, sizeof(data)); | |
69a2f00c DGM |
2048 | } |
2049 | ||
5dfe4c96 | 2050 | static const struct file_operations spufs_ibox_info_fops = { |
69a2f00c DGM |
2051 | .open = spufs_info_open, |
2052 | .read = spufs_ibox_info_read, | |
2053 | .llseek = generic_file_llseek, | |
2054 | }; | |
2055 | ||
35534629 JK |
2056 | static size_t spufs_wbox_info_cnt(struct spu_context *ctx) |
2057 | { | |
2058 | return (4 - ((ctx->csa.prob.mb_stat_R & 0x00ff00) >> 8)) * sizeof(u32); | |
2059 | } | |
2060 | ||
bf1ab978 DGM |
2061 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
2062 | char __user *buf, size_t len, loff_t *pos) | |
69a2f00c | 2063 | { |
69a2f00c DGM |
2064 | int i, cnt; |
2065 | u32 data[4]; | |
2066 | u32 wbox_stat; | |
2067 | ||
bf1ab978 | 2068 | wbox_stat = ctx->csa.prob.mb_stat_R; |
35534629 | 2069 | cnt = spufs_wbox_info_cnt(ctx); |
bf1ab978 DGM |
2070 | for (i = 0; i < cnt; i++) { |
2071 | data[i] = ctx->csa.spu_mailbox_data[i]; | |
2072 | } | |
2073 | ||
2074 | return simple_read_from_buffer(buf, len, pos, &data, | |
2075 | cnt * sizeof(u32)); | |
2076 | } | |
2077 | ||
2078 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, | |
2079 | size_t len, loff_t *pos) | |
2080 | { | |
2081 | struct spu_context *ctx = file->private_data; | |
35534629 JK |
2082 | u32 data[ARRAY_SIZE(ctx->csa.spu_mailbox_data)]; |
2083 | int ret, count; | |
bf1ab978 | 2084 | |
96d4f267 | 2085 | if (!access_ok(buf, len)) |
69a2f00c DGM |
2086 | return -EFAULT; |
2087 | ||
c9101bdb CH |
2088 | ret = spu_acquire_saved(ctx); |
2089 | if (ret) | |
2090 | return ret; | |
69a2f00c | 2091 | spin_lock(&ctx->csa.register_lock); |
35534629 JK |
2092 | count = spufs_wbox_info_cnt(ctx); |
2093 | memcpy(&data, &ctx->csa.spu_mailbox_data, sizeof(data)); | |
69a2f00c | 2094 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2095 | spu_release_saved(ctx); |
69a2f00c | 2096 | |
35534629 JK |
2097 | return simple_read_from_buffer(buf, len, pos, &data, |
2098 | count * sizeof(u32)); | |
69a2f00c DGM |
2099 | } |
2100 | ||
5dfe4c96 | 2101 | static const struct file_operations spufs_wbox_info_fops = { |
69a2f00c DGM |
2102 | .open = spufs_info_open, |
2103 | .read = spufs_wbox_info_read, | |
2104 | .llseek = generic_file_llseek, | |
2105 | }; | |
2106 | ||
35534629 JK |
2107 | static void spufs_get_dma_info(struct spu_context *ctx, |
2108 | struct spu_dma_info *info) | |
b9e3bd77 | 2109 | { |
b9e3bd77 DGM |
2110 | int i; |
2111 | ||
35534629 JK |
2112 | info->dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
2113 | info->dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; | |
2114 | info->dma_info_status = ctx->csa.spu_chnldata_RW[24]; | |
2115 | info->dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; | |
2116 | info->dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; | |
b9e3bd77 | 2117 | for (i = 0; i < 16; i++) { |
35534629 JK |
2118 | struct mfc_cq_sr *qp = &info->dma_info_command_data[i]; |
2119 | struct mfc_cq_sr *spuqp = &ctx->csa.priv2.spuq[i]; | |
b9e3bd77 DGM |
2120 | |
2121 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; | |
2122 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; | |
2123 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; | |
2124 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; | |
2125 | } | |
35534629 JK |
2126 | } |
2127 | ||
2128 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, | |
2129 | char __user *buf, size_t len, loff_t *pos) | |
2130 | { | |
2131 | struct spu_dma_info info; | |
2132 | ||
2133 | spufs_get_dma_info(ctx, &info); | |
b9e3bd77 DGM |
2134 | |
2135 | return simple_read_from_buffer(buf, len, pos, &info, | |
2136 | sizeof info); | |
2137 | } | |
2138 | ||
bf1ab978 DGM |
2139 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
2140 | size_t len, loff_t *pos) | |
2141 | { | |
2142 | struct spu_context *ctx = file->private_data; | |
35534629 | 2143 | struct spu_dma_info info; |
bf1ab978 DGM |
2144 | int ret; |
2145 | ||
96d4f267 | 2146 | if (!access_ok(buf, len)) |
bf1ab978 DGM |
2147 | return -EFAULT; |
2148 | ||
c9101bdb CH |
2149 | ret = spu_acquire_saved(ctx); |
2150 | if (ret) | |
2151 | return ret; | |
bf1ab978 | 2152 | spin_lock(&ctx->csa.register_lock); |
35534629 | 2153 | spufs_get_dma_info(ctx, &info); |
bf1ab978 | 2154 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2155 | spu_release_saved(ctx); |
bf1ab978 | 2156 | |
35534629 JK |
2157 | return simple_read_from_buffer(buf, len, pos, &info, |
2158 | sizeof(info)); | |
bf1ab978 DGM |
2159 | } |
2160 | ||
5dfe4c96 | 2161 | static const struct file_operations spufs_dma_info_fops = { |
b9e3bd77 DGM |
2162 | .open = spufs_info_open, |
2163 | .read = spufs_dma_info_read, | |
fc15351d | 2164 | .llseek = no_llseek, |
b9e3bd77 DGM |
2165 | }; |
2166 | ||
35534629 JK |
2167 | static void spufs_get_proxydma_info(struct spu_context *ctx, |
2168 | struct spu_proxydma_info *info) | |
2169 | { | |
2170 | int i; | |
2171 | ||
2172 | info->proxydma_info_type = ctx->csa.prob.dma_querytype_RW; | |
2173 | info->proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; | |
2174 | info->proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; | |
2175 | ||
2176 | for (i = 0; i < 8; i++) { | |
2177 | struct mfc_cq_sr *qp = &info->proxydma_info_command_data[i]; | |
2178 | struct mfc_cq_sr *puqp = &ctx->csa.priv2.puq[i]; | |
2179 | ||
2180 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; | |
2181 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; | |
2182 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; | |
2183 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; | |
2184 | } | |
2185 | } | |
2186 | ||
bf1ab978 DGM |
2187 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
2188 | char __user *buf, size_t len, loff_t *pos) | |
b9e3bd77 | 2189 | { |
b9e3bd77 | 2190 | struct spu_proxydma_info info; |
bf1ab978 | 2191 | int ret = sizeof info; |
b9e3bd77 DGM |
2192 | |
2193 | if (len < ret) | |
2194 | return -EINVAL; | |
2195 | ||
96d4f267 | 2196 | if (!access_ok(buf, len)) |
b9e3bd77 DGM |
2197 | return -EFAULT; |
2198 | ||
35534629 | 2199 | spufs_get_proxydma_info(ctx, &info); |
bf1ab978 DGM |
2200 | |
2201 | return simple_read_from_buffer(buf, len, pos, &info, | |
2202 | sizeof info); | |
2203 | } | |
2204 | ||
2205 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, | |
2206 | size_t len, loff_t *pos) | |
2207 | { | |
2208 | struct spu_context *ctx = file->private_data; | |
35534629 | 2209 | struct spu_proxydma_info info; |
bf1ab978 DGM |
2210 | int ret; |
2211 | ||
c9101bdb CH |
2212 | ret = spu_acquire_saved(ctx); |
2213 | if (ret) | |
2214 | return ret; | |
bf1ab978 | 2215 | spin_lock(&ctx->csa.register_lock); |
35534629 | 2216 | spufs_get_proxydma_info(ctx, &info); |
b9e3bd77 | 2217 | spin_unlock(&ctx->csa.register_lock); |
27b1ea09 | 2218 | spu_release_saved(ctx); |
b9e3bd77 | 2219 | |
35534629 JK |
2220 | return simple_read_from_buffer(buf, len, pos, &info, |
2221 | sizeof(info)); | |
b9e3bd77 DGM |
2222 | } |
2223 | ||
5dfe4c96 | 2224 | static const struct file_operations spufs_proxydma_info_fops = { |
b9e3bd77 DGM |
2225 | .open = spufs_info_open, |
2226 | .read = spufs_proxydma_info_read, | |
fc15351d | 2227 | .llseek = no_llseek, |
b9e3bd77 DGM |
2228 | }; |
2229 | ||
476273ad CH |
2230 | static int spufs_show_tid(struct seq_file *s, void *private) |
2231 | { | |
2232 | struct spu_context *ctx = s->private; | |
2233 | ||
2234 | seq_printf(s, "%d\n", ctx->tid); | |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | static int spufs_tid_open(struct inode *inode, struct file *file) | |
2239 | { | |
2240 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); | |
2241 | } | |
2242 | ||
2243 | static const struct file_operations spufs_tid_fops = { | |
2244 | .open = spufs_tid_open, | |
2245 | .read = seq_read, | |
2246 | .llseek = seq_lseek, | |
2247 | .release = single_release, | |
2248 | }; | |
2249 | ||
e9f8a0b6 CH |
2250 | static const char *ctx_state_names[] = { |
2251 | "user", "system", "iowait", "loaded" | |
2252 | }; | |
2253 | ||
2254 | static unsigned long long spufs_acct_time(struct spu_context *ctx, | |
27ec41d3 | 2255 | enum spu_utilization_state state) |
e9f8a0b6 | 2256 | { |
27ec41d3 | 2257 | unsigned long long time = ctx->stats.times[state]; |
e9f8a0b6 | 2258 | |
27ec41d3 AD |
2259 | /* |
2260 | * In general, utilization statistics are updated by the controlling | |
2261 | * thread as the spu context moves through various well defined | |
2262 | * state transitions, but if the context is lazily loaded its | |
2263 | * utilization statistics are not updated as the controlling thread | |
2264 | * is not tightly coupled with the execution of the spu context. We | |
2265 | * calculate and apply the time delta from the last recorded state | |
2266 | * of the spu context. | |
2267 | */ | |
2268 | if (ctx->spu && ctx->stats.util_state == state) { | |
f2dec1ea | 2269 | time += ktime_get_ns() - ctx->stats.tstamp; |
27ec41d3 | 2270 | } |
e9f8a0b6 | 2271 | |
27ec41d3 | 2272 | return time / NSEC_PER_MSEC; |
e9f8a0b6 CH |
2273 | } |
2274 | ||
2275 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) | |
2276 | { | |
2277 | unsigned long long slb_flts = ctx->stats.slb_flt; | |
2278 | ||
2279 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2280 | slb_flts += (ctx->spu->stats.slb_flt - | |
2281 | ctx->stats.slb_flt_base); | |
2282 | } | |
2283 | ||
2284 | return slb_flts; | |
2285 | } | |
2286 | ||
2287 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) | |
2288 | { | |
2289 | unsigned long long class2_intrs = ctx->stats.class2_intr; | |
2290 | ||
2291 | if (ctx->state == SPU_STATE_RUNNABLE) { | |
2292 | class2_intrs += (ctx->spu->stats.class2_intr - | |
2293 | ctx->stats.class2_intr_base); | |
2294 | } | |
2295 | ||
2296 | return class2_intrs; | |
2297 | } | |
2298 | ||
2299 | ||
2300 | static int spufs_show_stat(struct seq_file *s, void *private) | |
2301 | { | |
2302 | struct spu_context *ctx = s->private; | |
c9101bdb CH |
2303 | int ret; |
2304 | ||
2305 | ret = spu_acquire(ctx); | |
2306 | if (ret) | |
2307 | return ret; | |
e9f8a0b6 | 2308 | |
e9f8a0b6 CH |
2309 | seq_printf(s, "%s %llu %llu %llu %llu " |
2310 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", | |
27ec41d3 AD |
2311 | ctx_state_names[ctx->stats.util_state], |
2312 | spufs_acct_time(ctx, SPU_UTIL_USER), | |
2313 | spufs_acct_time(ctx, SPU_UTIL_SYSTEM), | |
2314 | spufs_acct_time(ctx, SPU_UTIL_IOWAIT), | |
2315 | spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), | |
e9f8a0b6 CH |
2316 | ctx->stats.vol_ctx_switch, |
2317 | ctx->stats.invol_ctx_switch, | |
2318 | spufs_slb_flts(ctx), | |
2319 | ctx->stats.hash_flt, | |
2320 | ctx->stats.min_flt, | |
2321 | ctx->stats.maj_flt, | |
2322 | spufs_class2_intrs(ctx), | |
2323 | ctx->stats.libassist); | |
2324 | spu_release(ctx); | |
2325 | return 0; | |
2326 | } | |
2327 | ||
2328 | static int spufs_stat_open(struct inode *inode, struct file *file) | |
2329 | { | |
2330 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); | |
2331 | } | |
2332 | ||
2333 | static const struct file_operations spufs_stat_fops = { | |
2334 | .open = spufs_stat_open, | |
2335 | .read = seq_read, | |
2336 | .llseek = seq_lseek, | |
2337 | .release = single_release, | |
2338 | }; | |
2339 | ||
5158e9b5 CH |
2340 | static inline int spufs_switch_log_used(struct spu_context *ctx) |
2341 | { | |
2342 | return (ctx->switch_log->head - ctx->switch_log->tail) % | |
2343 | SWITCH_LOG_BUFSIZE; | |
2344 | } | |
2345 | ||
2346 | static inline int spufs_switch_log_avail(struct spu_context *ctx) | |
2347 | { | |
2348 | return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx); | |
2349 | } | |
2350 | ||
2351 | static int spufs_switch_log_open(struct inode *inode, struct file *file) | |
2352 | { | |
2353 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
f5ed0eb6 JK |
2354 | int rc; |
2355 | ||
2356 | rc = spu_acquire(ctx); | |
2357 | if (rc) | |
2358 | return rc; | |
5158e9b5 | 2359 | |
5158e9b5 | 2360 | if (ctx->switch_log) { |
f5ed0eb6 JK |
2361 | rc = -EBUSY; |
2362 | goto out; | |
5158e9b5 | 2363 | } |
f5ed0eb6 | 2364 | |
00def713 GS |
2365 | ctx->switch_log = kmalloc(struct_size(ctx->switch_log, log, |
2366 | SWITCH_LOG_BUFSIZE), GFP_KERNEL); | |
f5ed0eb6 JK |
2367 | |
2368 | if (!ctx->switch_log) { | |
2369 | rc = -ENOMEM; | |
2370 | goto out; | |
2371 | } | |
2372 | ||
837ef884 | 2373 | ctx->switch_log->head = ctx->switch_log->tail = 0; |
f5ed0eb6 JK |
2374 | init_waitqueue_head(&ctx->switch_log->wait); |
2375 | rc = 0; | |
2376 | ||
2377 | out: | |
2378 | spu_release(ctx); | |
2379 | return rc; | |
2380 | } | |
2381 | ||
2382 | static int spufs_switch_log_release(struct inode *inode, struct file *file) | |
2383 | { | |
2384 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; | |
2385 | int rc; | |
2386 | ||
2387 | rc = spu_acquire(ctx); | |
2388 | if (rc) | |
2389 | return rc; | |
2390 | ||
2391 | kfree(ctx->switch_log); | |
2392 | ctx->switch_log = NULL; | |
2393 | spu_release(ctx); | |
5158e9b5 CH |
2394 | |
2395 | return 0; | |
5158e9b5 CH |
2396 | } |
2397 | ||
2398 | static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n) | |
2399 | { | |
2400 | struct switch_log_entry *p; | |
2401 | ||
2402 | p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE; | |
2403 | ||
cef37ac1 AB |
2404 | return snprintf(tbuf, n, "%llu.%09u %d %u %u %llu\n", |
2405 | (unsigned long long) p->tstamp.tv_sec, | |
5158e9b5 CH |
2406 | (unsigned int) p->tstamp.tv_nsec, |
2407 | p->spu_id, | |
2408 | (unsigned int) p->type, | |
2409 | (unsigned int) p->val, | |
2410 | (unsigned long long) p->timebase); | |
2411 | } | |
2412 | ||
2413 | static ssize_t spufs_switch_log_read(struct file *file, char __user *buf, | |
2414 | size_t len, loff_t *ppos) | |
2415 | { | |
496ad9aa | 2416 | struct inode *inode = file_inode(file); |
5158e9b5 CH |
2417 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
2418 | int error = 0, cnt = 0; | |
2419 | ||
17e37675 | 2420 | if (!buf) |
5158e9b5 CH |
2421 | return -EINVAL; |
2422 | ||
f5ed0eb6 JK |
2423 | error = spu_acquire(ctx); |
2424 | if (error) | |
2425 | return error; | |
2426 | ||
5158e9b5 CH |
2427 | while (cnt < len) { |
2428 | char tbuf[128]; | |
2429 | int width; | |
2430 | ||
14f693ee JK |
2431 | if (spufs_switch_log_used(ctx) == 0) { |
2432 | if (cnt > 0) { | |
2433 | /* If there's data ready to go, we can | |
2434 | * just return straight away */ | |
2435 | break; | |
2436 | ||
2437 | } else if (file->f_flags & O_NONBLOCK) { | |
f5ed0eb6 JK |
2438 | error = -EAGAIN; |
2439 | break; | |
14f693ee JK |
2440 | |
2441 | } else { | |
2442 | /* spufs_wait will drop the mutex and | |
2443 | * re-acquire, but since we're in read(), the | |
2444 | * file cannot be _released (and so | |
2445 | * ctx->switch_log is stable). | |
2446 | */ | |
2447 | error = spufs_wait(ctx->switch_log->wait, | |
2448 | spufs_switch_log_used(ctx) > 0); | |
2449 | ||
2450 | /* On error, spufs_wait returns without the | |
2451 | * state mutex held */ | |
2452 | if (error) | |
2453 | return error; | |
2454 | ||
2455 | /* We may have had entries read from underneath | |
2456 | * us while we dropped the mutex in spufs_wait, | |
2457 | * so re-check */ | |
2458 | if (spufs_switch_log_used(ctx) == 0) | |
2459 | continue; | |
f5ed0eb6 | 2460 | } |
5158e9b5 CH |
2461 | } |
2462 | ||
5158e9b5 | 2463 | width = switch_log_sprint(ctx, tbuf, sizeof(tbuf)); |
f5ed0eb6 | 2464 | if (width < len) |
5158e9b5 CH |
2465 | ctx->switch_log->tail = |
2466 | (ctx->switch_log->tail + 1) % | |
2467 | SWITCH_LOG_BUFSIZE; | |
f5ed0eb6 JK |
2468 | else |
2469 | /* If the record is greater than space available return | |
2470 | * partial buffer (so far) */ | |
5158e9b5 CH |
2471 | break; |
2472 | ||
2473 | error = copy_to_user(buf + cnt, tbuf, width); | |
2474 | if (error) | |
2475 | break; | |
2476 | cnt += width; | |
2477 | } | |
2478 | ||
f5ed0eb6 JK |
2479 | spu_release(ctx); |
2480 | ||
5158e9b5 CH |
2481 | return cnt == 0 ? error : cnt; |
2482 | } | |
2483 | ||
8153a5ea | 2484 | static __poll_t spufs_switch_log_poll(struct file *file, poll_table *wait) |
5158e9b5 | 2485 | { |
496ad9aa | 2486 | struct inode *inode = file_inode(file); |
5158e9b5 | 2487 | struct spu_context *ctx = SPUFS_I(inode)->i_ctx; |
8153a5ea | 2488 | __poll_t mask = 0; |
f5ed0eb6 | 2489 | int rc; |
5158e9b5 CH |
2490 | |
2491 | poll_wait(file, &ctx->switch_log->wait, wait); | |
2492 | ||
f5ed0eb6 JK |
2493 | rc = spu_acquire(ctx); |
2494 | if (rc) | |
2495 | return rc; | |
2496 | ||
5158e9b5 | 2497 | if (spufs_switch_log_used(ctx) > 0) |
a9a08845 | 2498 | mask |= EPOLLIN; |
5158e9b5 | 2499 | |
f5ed0eb6 JK |
2500 | spu_release(ctx); |
2501 | ||
5158e9b5 CH |
2502 | return mask; |
2503 | } | |
2504 | ||
2505 | static const struct file_operations spufs_switch_log_fops = { | |
f5ed0eb6 JK |
2506 | .open = spufs_switch_log_open, |
2507 | .read = spufs_switch_log_read, | |
2508 | .poll = spufs_switch_log_poll, | |
2509 | .release = spufs_switch_log_release, | |
fc15351d | 2510 | .llseek = no_llseek, |
5158e9b5 CH |
2511 | }; |
2512 | ||
f5ed0eb6 JK |
2513 | /** |
2514 | * Log a context switch event to a switch log reader. | |
2515 | * | |
2516 | * Must be called with ctx->state_mutex held. | |
2517 | */ | |
5158e9b5 CH |
2518 | void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx, |
2519 | u32 type, u32 val) | |
2520 | { | |
2521 | if (!ctx->switch_log) | |
2522 | return; | |
2523 | ||
5158e9b5 CH |
2524 | if (spufs_switch_log_avail(ctx) > 1) { |
2525 | struct switch_log_entry *p; | |
2526 | ||
2527 | p = ctx->switch_log->log + ctx->switch_log->head; | |
cef37ac1 | 2528 | ktime_get_ts64(&p->tstamp); |
5158e9b5 CH |
2529 | p->timebase = get_tb(); |
2530 | p->spu_id = spu ? spu->number : -1; | |
2531 | p->type = type; | |
2532 | p->val = val; | |
2533 | ||
2534 | ctx->switch_log->head = | |
2535 | (ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE; | |
2536 | } | |
5158e9b5 CH |
2537 | |
2538 | wake_up(&ctx->switch_log->wait); | |
2539 | } | |
e9f8a0b6 | 2540 | |
46deed69 LB |
2541 | static int spufs_show_ctx(struct seq_file *s, void *private) |
2542 | { | |
2543 | struct spu_context *ctx = s->private; | |
2544 | u64 mfc_control_RW; | |
2545 | ||
2546 | mutex_lock(&ctx->state_mutex); | |
2547 | if (ctx->spu) { | |
2548 | struct spu *spu = ctx->spu; | |
2549 | struct spu_priv2 __iomem *priv2 = spu->priv2; | |
2550 | ||
2551 | spin_lock_irq(&spu->register_lock); | |
2552 | mfc_control_RW = in_be64(&priv2->mfc_control_RW); | |
2553 | spin_unlock_irq(&spu->register_lock); | |
2554 | } else { | |
2555 | struct spu_state *csa = &ctx->csa; | |
2556 | ||
2557 | mfc_control_RW = csa->priv2.mfc_control_RW; | |
2558 | } | |
2559 | ||
2560 | seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)" | |
9477e455 | 2561 | " %c %llx %llx %llx %llx %x %x\n", |
46deed69 LB |
2562 | ctx->state == SPU_STATE_SAVED ? 'S' : 'R', |
2563 | ctx->flags, | |
2564 | ctx->sched_flags, | |
2565 | ctx->prio, | |
2566 | ctx->time_slice, | |
2567 | ctx->spu ? ctx->spu->number : -1, | |
2568 | !list_empty(&ctx->rq) ? 'q' : ' ', | |
2569 | ctx->csa.class_0_pending, | |
2570 | ctx->csa.class_0_dar, | |
2571 | ctx->csa.class_1_dsisr, | |
2572 | mfc_control_RW, | |
2573 | ctx->ops->runcntl_read(ctx), | |
2574 | ctx->ops->status_read(ctx)); | |
2575 | ||
2576 | mutex_unlock(&ctx->state_mutex); | |
2577 | ||
2578 | return 0; | |
2579 | } | |
2580 | ||
2581 | static int spufs_ctx_open(struct inode *inode, struct file *file) | |
2582 | { | |
2583 | return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx); | |
2584 | } | |
2585 | ||
2586 | static const struct file_operations spufs_ctx_fops = { | |
2587 | .open = spufs_ctx_open, | |
2588 | .read = seq_read, | |
2589 | .llseek = seq_lseek, | |
2590 | .release = single_release, | |
2591 | }; | |
2592 | ||
74254647 | 2593 | const struct spufs_tree_descr spufs_dir_contents[] = { |
cbe709c1 | 2594 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 JK |
2595 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
2596 | { "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), }, | |
67207b96 AB |
2597 | { "mbox", &spufs_mbox_fops, 0444, }, |
2598 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2599 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2600 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2601 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2602 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
603c4612 JK |
2603 | { "signal1", &spufs_signal1_fops, 0666, }, |
2604 | { "signal2", &spufs_signal2_fops, 0666, }, | |
67207b96 AB |
2605 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2606 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
6df10a82 | 2607 | { "cntl", &spufs_cntl_fops, 0666, }, |
6f7dde81 | 2608 | { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), }, |
b9e3bd77 DGM |
2609 | { "lslr", &spufs_lslr_ops, 0444, }, |
2610 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2611 | { "mss", &spufs_mss_fops, 0666, }, | |
2612 | { "npc", &spufs_npc_ops, 0666, }, | |
2613 | { "srr0", &spufs_srr0_ops, 0666, }, | |
8b3d6663 AB |
2614 | { "decr", &spufs_decr_ops, 0666, }, |
2615 | { "decr_status", &spufs_decr_status_ops, 0666, }, | |
8b3d6663 | 2616 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
b9e3bd77 | 2617 | { "event_status", &spufs_event_status_ops, 0444, }, |
6f7dde81 | 2618 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
86767277 AB |
2619 | { "phys-id", &spufs_id_ops, 0666, }, |
2620 | { "object-id", &spufs_object_id_ops, 0666, }, | |
6f7dde81 JK |
2621 | { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), }, |
2622 | { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), }, | |
2623 | { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), }, | |
2624 | { "dma_info", &spufs_dma_info_fops, 0444, | |
2625 | sizeof(struct spu_dma_info), }, | |
2626 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, | |
2627 | sizeof(struct spu_proxydma_info)}, | |
476273ad | 2628 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2629 | { "stat", &spufs_stat_fops, 0444, }, |
5158e9b5 | 2630 | { "switch_log", &spufs_switch_log_fops, 0444 }, |
67207b96 AB |
2631 | {}, |
2632 | }; | |
5737edd1 | 2633 | |
74254647 | 2634 | const struct spufs_tree_descr spufs_dir_nosched_contents[] = { |
cbe709c1 | 2635 | { "capabilities", &spufs_caps_fops, 0444, }, |
6f7dde81 | 2636 | { "mem", &spufs_mem_fops, 0666, LS_SIZE, }, |
5737edd1 MN |
2637 | { "mbox", &spufs_mbox_fops, 0444, }, |
2638 | { "ibox", &spufs_ibox_fops, 0444, }, | |
2639 | { "wbox", &spufs_wbox_fops, 0222, }, | |
6f7dde81 JK |
2640 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), }, |
2641 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), }, | |
2642 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), }, | |
d054b36f JK |
2643 | { "signal1", &spufs_signal1_nosched_fops, 0222, }, |
2644 | { "signal2", &spufs_signal2_nosched_fops, 0222, }, | |
5737edd1 MN |
2645 | { "signal1_type", &spufs_signal1_type, 0666, }, |
2646 | { "signal2_type", &spufs_signal2_type, 0666, }, | |
2647 | { "mss", &spufs_mss_fops, 0666, }, | |
2648 | { "mfc", &spufs_mfc_fops, 0666, }, | |
2649 | { "cntl", &spufs_cntl_fops, 0666, }, | |
2650 | { "npc", &spufs_npc_ops, 0666, }, | |
6f7dde81 | 2651 | { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, }, |
5737edd1 MN |
2652 | { "phys-id", &spufs_id_ops, 0666, }, |
2653 | { "object-id", &spufs_object_id_ops, 0666, }, | |
476273ad | 2654 | { "tid", &spufs_tid_fops, 0444, }, |
e9f8a0b6 | 2655 | { "stat", &spufs_stat_fops, 0444, }, |
2c3e4787 JK |
2656 | {}, |
2657 | }; | |
2658 | ||
74254647 | 2659 | const struct spufs_tree_descr spufs_dir_debug_contents[] = { |
46deed69 | 2660 | { ".ctx", &spufs_ctx_fops, 0444, }, |
5737edd1 MN |
2661 | {}, |
2662 | }; | |
bf1ab978 | 2663 | |
74254647 | 2664 | const struct spufs_coredump_reader spufs_coredump_read[] = { |
4fca9c42 ME |
2665 | { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, |
2666 | { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, | |
104f0cc2 ME |
2667 | { "lslr", NULL, spufs_lslr_get, 19 }, |
2668 | { "decr", NULL, spufs_decr_get, 19 }, | |
2669 | { "decr_status", NULL, spufs_decr_status_get, 19 }, | |
4fca9c42 ME |
2670 | { "mem", __spufs_mem_read, NULL, LS_SIZE, }, |
2671 | { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, | |
104f0cc2 | 2672 | { "signal1_type", NULL, spufs_signal1_type_get, 19 }, |
4fca9c42 | 2673 | { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, |
104f0cc2 ME |
2674 | { "signal2_type", NULL, spufs_signal2_type_get, 19 }, |
2675 | { "event_mask", NULL, spufs_event_mask_get, 19 }, | |
2676 | { "event_status", NULL, spufs_event_status_get, 19 }, | |
4fca9c42 ME |
2677 | { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, |
2678 | { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, | |
2679 | { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, | |
2680 | { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, | |
2681 | { "proxydma_info", __spufs_proxydma_info_read, | |
2682 | NULL, sizeof(struct spu_proxydma_info)}, | |
104f0cc2 ME |
2683 | { "object-id", NULL, spufs_object_id_get, 19 }, |
2684 | { "npc", NULL, spufs_npc_get, 19 }, | |
936d5bf1 | 2685 | { NULL }, |
bf1ab978 | 2686 | }; |