Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/pci/pci-sysfs.c | |
3 | * | |
4 | * (C) Copyright 2002-2004 Greg Kroah-Hartman <greg@kroah.com> | |
5 | * (C) Copyright 2002-2004 IBM Corp. | |
6 | * (C) Copyright 2003 Matthew Wilcox | |
7 | * (C) Copyright 2003 Hewlett-Packard | |
8 | * (C) Copyright 2004 Jon Smirl <jonsmirl@yahoo.com> | |
9 | * (C) Copyright 2004 Silicon Graphics, Inc. Jesse Barnes <jbarnes@sgi.com> | |
10 | * | |
11 | * File attributes for PCI devices | |
12 | * | |
13 | * Modeled after usb's driverfs.c | |
14 | * | |
15 | */ | |
16 | ||
17 | ||
18 | #include <linux/config.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/pci.h> | |
21 | #include <linux/stat.h> | |
22 | #include <linux/topology.h> | |
23 | #include <linux/mm.h> | |
24 | ||
25 | #include "pci.h" | |
26 | ||
27 | static int sysfs_initialized; /* = 0 */ | |
28 | ||
29 | /* show configuration fields */ | |
30 | #define pci_config_attr(field, format_string) \ | |
31 | static ssize_t \ | |
e404e274 | 32 | field##_show(struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
33 | { \ |
34 | struct pci_dev *pdev; \ | |
35 | \ | |
36 | pdev = to_pci_dev (dev); \ | |
37 | return sprintf (buf, format_string, pdev->field); \ | |
38 | } | |
39 | ||
40 | pci_config_attr(vendor, "0x%04x\n"); | |
41 | pci_config_attr(device, "0x%04x\n"); | |
42 | pci_config_attr(subsystem_vendor, "0x%04x\n"); | |
43 | pci_config_attr(subsystem_device, "0x%04x\n"); | |
44 | pci_config_attr(class, "0x%06x\n"); | |
45 | pci_config_attr(irq, "%u\n"); | |
46 | ||
4327edf6 AC |
47 | static ssize_t local_cpus_show(struct device *dev, |
48 | struct device_attribute *attr, char *buf) | |
1da177e4 | 49 | { |
4327edf6 AC |
50 | cpumask_t mask; |
51 | int len; | |
52 | ||
53 | mask = pcibus_to_cpumask(to_pci_dev(dev)->bus); | |
54 | len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask); | |
1da177e4 LT |
55 | strcat(buf,"\n"); |
56 | return 1+len; | |
57 | } | |
58 | ||
59 | /* show resources */ | |
60 | static ssize_t | |
e404e274 | 61 | resource_show(struct device * dev, struct device_attribute *attr, char * buf) |
1da177e4 LT |
62 | { |
63 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
64 | char * str = buf; | |
65 | int i; | |
66 | int max = 7; | |
2311b1f2 | 67 | u64 start, end; |
1da177e4 LT |
68 | |
69 | if (pci_dev->subordinate) | |
70 | max = DEVICE_COUNT_RESOURCE; | |
71 | ||
72 | for (i = 0; i < max; i++) { | |
2311b1f2 ME |
73 | struct resource *res = &pci_dev->resource[i]; |
74 | pci_resource_to_user(pci_dev, i, res, &start, &end); | |
75 | str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n", | |
76 | (unsigned long long)start, | |
77 | (unsigned long long)end, | |
78 | (unsigned long long)res->flags); | |
1da177e4 LT |
79 | } |
80 | return (str - buf); | |
81 | } | |
82 | ||
87c8a443 | 83 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
9888549e GK |
84 | { |
85 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
86 | ||
87 | return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n", | |
88 | pci_dev->vendor, pci_dev->device, | |
89 | pci_dev->subsystem_vendor, pci_dev->subsystem_device, | |
90 | (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8), | |
91 | (u8)(pci_dev->class)); | |
92 | } | |
93 | ||
1da177e4 LT |
94 | struct device_attribute pci_dev_attrs[] = { |
95 | __ATTR_RO(resource), | |
96 | __ATTR_RO(vendor), | |
97 | __ATTR_RO(device), | |
98 | __ATTR_RO(subsystem_vendor), | |
99 | __ATTR_RO(subsystem_device), | |
100 | __ATTR_RO(class), | |
101 | __ATTR_RO(irq), | |
102 | __ATTR_RO(local_cpus), | |
9888549e | 103 | __ATTR_RO(modalias), |
1da177e4 LT |
104 | __ATTR_NULL, |
105 | }; | |
106 | ||
107 | static ssize_t | |
108 | pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count) | |
109 | { | |
110 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
111 | unsigned int size = 64; | |
112 | loff_t init_off = off; | |
4c0619ad | 113 | u8 *data = (u8*) buf; |
1da177e4 LT |
114 | |
115 | /* Several chips lock up trying to read undefined config space */ | |
116 | if (capable(CAP_SYS_ADMIN)) { | |
117 | size = dev->cfg_size; | |
118 | } else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) { | |
119 | size = 128; | |
120 | } | |
121 | ||
122 | if (off > size) | |
123 | return 0; | |
124 | if (off + count > size) { | |
125 | size -= off; | |
126 | count = size; | |
127 | } else { | |
128 | size = count; | |
129 | } | |
130 | ||
4c0619ad | 131 | if ((off & 1) && size) { |
132 | u8 val; | |
e04b0ea2 | 133 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 134 | data[off - init_off] = val; |
1da177e4 | 135 | off++; |
4c0619ad | 136 | size--; |
137 | } | |
138 | ||
139 | if ((off & 3) && size > 2) { | |
140 | u16 val; | |
e04b0ea2 | 141 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 142 | data[off - init_off] = val & 0xff; |
143 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
144 | off += 2; | |
145 | size -= 2; | |
1da177e4 LT |
146 | } |
147 | ||
148 | while (size > 3) { | |
4c0619ad | 149 | u32 val; |
e04b0ea2 | 150 | pci_user_read_config_dword(dev, off, &val); |
4c0619ad | 151 | data[off - init_off] = val & 0xff; |
152 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
153 | data[off - init_off + 2] = (val >> 16) & 0xff; | |
154 | data[off - init_off + 3] = (val >> 24) & 0xff; | |
1da177e4 LT |
155 | off += 4; |
156 | size -= 4; | |
157 | } | |
158 | ||
4c0619ad | 159 | if (size >= 2) { |
160 | u16 val; | |
e04b0ea2 | 161 | pci_user_read_config_word(dev, off, &val); |
4c0619ad | 162 | data[off - init_off] = val & 0xff; |
163 | data[off - init_off + 1] = (val >> 8) & 0xff; | |
164 | off += 2; | |
165 | size -= 2; | |
166 | } | |
167 | ||
168 | if (size > 0) { | |
169 | u8 val; | |
e04b0ea2 | 170 | pci_user_read_config_byte(dev, off, &val); |
4c0619ad | 171 | data[off - init_off] = val; |
1da177e4 LT |
172 | off++; |
173 | --size; | |
174 | } | |
175 | ||
176 | return count; | |
177 | } | |
178 | ||
179 | static ssize_t | |
180 | pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count) | |
181 | { | |
182 | struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj)); | |
183 | unsigned int size = count; | |
184 | loff_t init_off = off; | |
4c0619ad | 185 | u8 *data = (u8*) buf; |
1da177e4 LT |
186 | |
187 | if (off > dev->cfg_size) | |
188 | return 0; | |
189 | if (off + count > dev->cfg_size) { | |
190 | size = dev->cfg_size - off; | |
191 | count = size; | |
192 | } | |
4c0619ad | 193 | |
194 | if ((off & 1) && size) { | |
e04b0ea2 | 195 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 | 196 | off++; |
4c0619ad | 197 | size--; |
1da177e4 | 198 | } |
4c0619ad | 199 | |
200 | if ((off & 3) && size > 2) { | |
201 | u16 val = data[off - init_off]; | |
202 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 203 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 204 | off += 2; |
205 | size -= 2; | |
206 | } | |
1da177e4 LT |
207 | |
208 | while (size > 3) { | |
4c0619ad | 209 | u32 val = data[off - init_off]; |
210 | val |= (u32) data[off - init_off + 1] << 8; | |
211 | val |= (u32) data[off - init_off + 2] << 16; | |
212 | val |= (u32) data[off - init_off + 3] << 24; | |
e04b0ea2 | 213 | pci_user_write_config_dword(dev, off, val); |
1da177e4 LT |
214 | off += 4; |
215 | size -= 4; | |
216 | } | |
4c0619ad | 217 | |
218 | if (size >= 2) { | |
219 | u16 val = data[off - init_off]; | |
220 | val |= (u16) data[off - init_off + 1] << 8; | |
e04b0ea2 | 221 | pci_user_write_config_word(dev, off, val); |
4c0619ad | 222 | off += 2; |
223 | size -= 2; | |
224 | } | |
1da177e4 | 225 | |
4c0619ad | 226 | if (size) { |
e04b0ea2 | 227 | pci_user_write_config_byte(dev, off, data[off - init_off]); |
1da177e4 LT |
228 | off++; |
229 | --size; | |
230 | } | |
231 | ||
232 | return count; | |
233 | } | |
234 | ||
235 | #ifdef HAVE_PCI_LEGACY | |
236 | /** | |
237 | * pci_read_legacy_io - read byte(s) from legacy I/O port space | |
238 | * @kobj: kobject corresponding to file to read from | |
239 | * @buf: buffer to store results | |
240 | * @off: offset into legacy I/O port space | |
241 | * @count: number of bytes to read | |
242 | * | |
243 | * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
244 | * callback routine (pci_legacy_read). | |
245 | */ | |
246 | ssize_t | |
247 | pci_read_legacy_io(struct kobject *kobj, char *buf, loff_t off, size_t count) | |
248 | { | |
249 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
250 | struct class_device, | |
251 | kobj)); | |
252 | ||
253 | /* Only support 1, 2 or 4 byte accesses */ | |
254 | if (count != 1 && count != 2 && count != 4) | |
255 | return -EINVAL; | |
256 | ||
257 | return pci_legacy_read(bus, off, (u32 *)buf, count); | |
258 | } | |
259 | ||
260 | /** | |
261 | * pci_write_legacy_io - write byte(s) to legacy I/O port space | |
262 | * @kobj: kobject corresponding to file to read from | |
263 | * @buf: buffer containing value to be written | |
264 | * @off: offset into legacy I/O port space | |
265 | * @count: number of bytes to write | |
266 | * | |
267 | * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific | |
268 | * callback routine (pci_legacy_write). | |
269 | */ | |
270 | ssize_t | |
271 | pci_write_legacy_io(struct kobject *kobj, char *buf, loff_t off, size_t count) | |
272 | { | |
273 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
274 | struct class_device, | |
275 | kobj)); | |
276 | /* Only support 1, 2 or 4 byte accesses */ | |
277 | if (count != 1 && count != 2 && count != 4) | |
278 | return -EINVAL; | |
279 | ||
280 | return pci_legacy_write(bus, off, *(u32 *)buf, count); | |
281 | } | |
282 | ||
283 | /** | |
284 | * pci_mmap_legacy_mem - map legacy PCI memory into user memory space | |
285 | * @kobj: kobject corresponding to device to be mapped | |
286 | * @attr: struct bin_attribute for this file | |
287 | * @vma: struct vm_area_struct passed to mmap | |
288 | * | |
289 | * Uses an arch specific callback, pci_mmap_legacy_page_range, to mmap | |
290 | * legacy memory space (first meg of bus space) into application virtual | |
291 | * memory space. | |
292 | */ | |
293 | int | |
294 | pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr, | |
295 | struct vm_area_struct *vma) | |
296 | { | |
297 | struct pci_bus *bus = to_pci_bus(container_of(kobj, | |
298 | struct class_device, | |
299 | kobj)); | |
300 | ||
301 | return pci_mmap_legacy_page_range(bus, vma); | |
302 | } | |
303 | #endif /* HAVE_PCI_LEGACY */ | |
304 | ||
305 | #ifdef HAVE_PCI_MMAP | |
306 | /** | |
307 | * pci_mmap_resource - map a PCI resource into user memory space | |
308 | * @kobj: kobject for mapping | |
309 | * @attr: struct bin_attribute for the file being mapped | |
310 | * @vma: struct vm_area_struct passed into the mmap | |
311 | * | |
312 | * Use the regular PCI mapping routines to map a PCI resource into userspace. | |
313 | * FIXME: write combining? maybe automatic for prefetchable regions? | |
314 | */ | |
315 | static int | |
316 | pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, | |
317 | struct vm_area_struct *vma) | |
318 | { | |
319 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, | |
320 | struct device, kobj)); | |
321 | struct resource *res = (struct resource *)attr->private; | |
322 | enum pci_mmap_state mmap_type; | |
2311b1f2 ME |
323 | u64 start, end; |
324 | int i; | |
1da177e4 | 325 | |
2311b1f2 ME |
326 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
327 | if (res == &pdev->resource[i]) | |
328 | break; | |
329 | if (i >= PCI_ROM_RESOURCE) | |
330 | return -ENODEV; | |
331 | ||
332 | /* pci_mmap_page_range() expects the same kind of entry as coming | |
333 | * from /proc/bus/pci/ which is a "user visible" value. If this is | |
334 | * different from the resource itself, arch will do necessary fixup. | |
335 | */ | |
336 | pci_resource_to_user(pdev, i, res, &start, &end); | |
337 | vma->vm_pgoff += start >> PAGE_SHIFT; | |
1da177e4 LT |
338 | mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; |
339 | ||
340 | return pci_mmap_page_range(pdev, vma, mmap_type, 0); | |
341 | } | |
342 | ||
343 | /** | |
344 | * pci_create_resource_files - create resource files in sysfs for @dev | |
345 | * @dev: dev in question | |
346 | * | |
347 | * Walk the resources in @dev creating files for each resource available. | |
348 | */ | |
349 | static void | |
350 | pci_create_resource_files(struct pci_dev *pdev) | |
351 | { | |
352 | int i; | |
353 | ||
354 | /* Expose the PCI resources from this device as files */ | |
355 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
356 | struct bin_attribute *res_attr; | |
357 | ||
358 | /* skip empty resources */ | |
359 | if (!pci_resource_len(pdev, i)) | |
360 | continue; | |
361 | ||
d48593bf | 362 | /* allocate attribute structure, piggyback attribute name */ |
656da9da | 363 | res_attr = kzalloc(sizeof(*res_attr) + 10, GFP_ATOMIC); |
1da177e4 | 364 | if (res_attr) { |
d48593bf DT |
365 | char *res_attr_name = (char *)(res_attr + 1); |
366 | ||
1da177e4 | 367 | pdev->res_attr[i] = res_attr; |
d48593bf DT |
368 | sprintf(res_attr_name, "resource%d", i); |
369 | res_attr->attr.name = res_attr_name; | |
1da177e4 LT |
370 | res_attr->attr.mode = S_IRUSR | S_IWUSR; |
371 | res_attr->attr.owner = THIS_MODULE; | |
d48593bf | 372 | res_attr->size = pci_resource_len(pdev, i); |
1da177e4 LT |
373 | res_attr->mmap = pci_mmap_resource; |
374 | res_attr->private = &pdev->resource[i]; | |
375 | sysfs_create_bin_file(&pdev->dev.kobj, res_attr); | |
376 | } | |
377 | } | |
378 | } | |
379 | ||
380 | /** | |
381 | * pci_remove_resource_files - cleanup resource files | |
382 | * @dev: dev to cleanup | |
383 | * | |
384 | * If we created resource files for @dev, remove them from sysfs and | |
385 | * free their resources. | |
386 | */ | |
387 | static void | |
388 | pci_remove_resource_files(struct pci_dev *pdev) | |
389 | { | |
390 | int i; | |
391 | ||
392 | for (i = 0; i < PCI_ROM_RESOURCE; i++) { | |
393 | struct bin_attribute *res_attr; | |
394 | ||
395 | res_attr = pdev->res_attr[i]; | |
396 | if (res_attr) { | |
397 | sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); | |
398 | kfree(res_attr); | |
399 | } | |
400 | } | |
401 | } | |
402 | #else /* !HAVE_PCI_MMAP */ | |
403 | static inline void pci_create_resource_files(struct pci_dev *dev) { return; } | |
404 | static inline void pci_remove_resource_files(struct pci_dev *dev) { return; } | |
405 | #endif /* HAVE_PCI_MMAP */ | |
406 | ||
407 | /** | |
408 | * pci_write_rom - used to enable access to the PCI ROM display | |
409 | * @kobj: kernel object handle | |
410 | * @buf: user input | |
411 | * @off: file offset | |
412 | * @count: number of byte in input | |
413 | * | |
414 | * writing anything except 0 enables it | |
415 | */ | |
416 | static ssize_t | |
417 | pci_write_rom(struct kobject *kobj, char *buf, loff_t off, size_t count) | |
418 | { | |
419 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
420 | ||
421 | if ((off == 0) && (*buf == '0') && (count == 2)) | |
422 | pdev->rom_attr_enabled = 0; | |
423 | else | |
424 | pdev->rom_attr_enabled = 1; | |
425 | ||
426 | return count; | |
427 | } | |
428 | ||
429 | /** | |
430 | * pci_read_rom - read a PCI ROM | |
431 | * @kobj: kernel object handle | |
432 | * @buf: where to put the data we read from the ROM | |
433 | * @off: file offset | |
434 | * @count: number of bytes to read | |
435 | * | |
436 | * Put @count bytes starting at @off into @buf from the ROM in the PCI | |
437 | * device corresponding to @kobj. | |
438 | */ | |
439 | static ssize_t | |
440 | pci_read_rom(struct kobject *kobj, char *buf, loff_t off, size_t count) | |
441 | { | |
442 | struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); | |
443 | void __iomem *rom; | |
444 | size_t size; | |
445 | ||
446 | if (!pdev->rom_attr_enabled) | |
447 | return -EINVAL; | |
448 | ||
449 | rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ | |
450 | if (!rom) | |
451 | return 0; | |
452 | ||
453 | if (off >= size) | |
454 | count = 0; | |
455 | else { | |
456 | if (off + count > size) | |
457 | count = size - off; | |
458 | ||
459 | memcpy_fromio(buf, rom + off, count); | |
460 | } | |
461 | pci_unmap_rom(pdev, rom); | |
462 | ||
463 | return count; | |
464 | } | |
465 | ||
466 | static struct bin_attribute pci_config_attr = { | |
467 | .attr = { | |
468 | .name = "config", | |
469 | .mode = S_IRUGO | S_IWUSR, | |
470 | .owner = THIS_MODULE, | |
471 | }, | |
472 | .size = 256, | |
473 | .read = pci_read_config, | |
474 | .write = pci_write_config, | |
475 | }; | |
476 | ||
477 | static struct bin_attribute pcie_config_attr = { | |
478 | .attr = { | |
479 | .name = "config", | |
480 | .mode = S_IRUGO | S_IWUSR, | |
481 | .owner = THIS_MODULE, | |
482 | }, | |
483 | .size = 4096, | |
484 | .read = pci_read_config, | |
485 | .write = pci_write_config, | |
486 | }; | |
487 | ||
488 | int pci_create_sysfs_dev_files (struct pci_dev *pdev) | |
489 | { | |
490 | if (!sysfs_initialized) | |
491 | return -EACCES; | |
492 | ||
493 | if (pdev->cfg_size < 4096) | |
494 | sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); | |
495 | else | |
496 | sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
497 | ||
498 | pci_create_resource_files(pdev); | |
499 | ||
500 | /* If the device has a ROM, try to expose it in sysfs. */ | |
501 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) { | |
502 | struct bin_attribute *rom_attr; | |
503 | ||
f5afe806 | 504 | rom_attr = kzalloc(sizeof(*rom_attr), GFP_ATOMIC); |
1da177e4 | 505 | if (rom_attr) { |
1da177e4 LT |
506 | pdev->rom_attr = rom_attr; |
507 | rom_attr->size = pci_resource_len(pdev, PCI_ROM_RESOURCE); | |
508 | rom_attr->attr.name = "rom"; | |
509 | rom_attr->attr.mode = S_IRUSR; | |
510 | rom_attr->attr.owner = THIS_MODULE; | |
511 | rom_attr->read = pci_read_rom; | |
512 | rom_attr->write = pci_write_rom; | |
513 | sysfs_create_bin_file(&pdev->dev.kobj, rom_attr); | |
514 | } | |
515 | } | |
516 | /* add platform-specific attributes */ | |
517 | pcibios_add_platform_entries(pdev); | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | /** | |
523 | * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files | |
524 | * @pdev: device whose entries we should free | |
525 | * | |
526 | * Cleanup when @pdev is removed from sysfs. | |
527 | */ | |
528 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev) | |
529 | { | |
530 | if (pdev->cfg_size < 4096) | |
531 | sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); | |
532 | else | |
533 | sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); | |
534 | ||
535 | pci_remove_resource_files(pdev); | |
536 | ||
537 | if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) { | |
538 | if (pdev->rom_attr) { | |
539 | sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); | |
540 | kfree(pdev->rom_attr); | |
541 | } | |
542 | } | |
543 | } | |
544 | ||
545 | static int __init pci_sysfs_init(void) | |
546 | { | |
547 | struct pci_dev *pdev = NULL; | |
548 | ||
549 | sysfs_initialized = 1; | |
550 | for_each_pci_dev(pdev) | |
551 | pci_create_sysfs_dev_files(pdev); | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | __initcall(pci_sysfs_init); |