Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Functions to handle I2O devices | |
3 | * | |
4 | * Copyright (C) 2004 Markus Lidel <Markus.Lidel@shadowconnect.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | * | |
11 | * Fixes/additions: | |
12 | * Markus Lidel <Markus.Lidel@shadowconnect.com> | |
13 | * initial version. | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/i2o.h> | |
18 | #include <linux/delay.h> | |
4e57b681 TS |
19 | #include <linux/string.h> |
20 | #include <linux/slab.h> | |
9e87545f | 21 | #include "core.h" |
1da177e4 LT |
22 | |
23 | /** | |
24 | * i2o_device_issue_claim - claim or release a device | |
25 | * @dev: I2O device to claim or release | |
26 | * @cmd: claim or release command | |
27 | * @type: type of claim | |
28 | * | |
29 | * Issue I2O UTIL_CLAIM or UTIL_RELEASE messages. The message to be sent | |
30 | * is set by cmd. dev is the I2O device which should be claim or | |
31 | * released and the type is the claim type (see the I2O spec). | |
32 | * | |
33 | * Returs 0 on success or negative error code on failure. | |
34 | */ | |
35 | static inline int i2o_device_issue_claim(struct i2o_device *dev, u32 cmd, | |
36 | u32 type) | |
37 | { | |
38 | struct i2o_message __iomem *msg; | |
39 | u32 m; | |
40 | ||
41 | m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET); | |
42 | if (m == I2O_QUEUE_EMPTY) | |
43 | return -ETIMEDOUT; | |
44 | ||
45 | writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]); | |
46 | writel(cmd << 24 | HOST_TID << 12 | dev->lct_data.tid, &msg->u.head[1]); | |
47 | writel(type, &msg->body[0]); | |
48 | ||
49 | return i2o_msg_post_wait(dev->iop, m, 60); | |
4f5ca09e | 50 | } |
1da177e4 LT |
51 | |
52 | /** | |
4f5ca09e | 53 | * i2o_device_claim - claim a device for use by an OSM |
1da177e4 LT |
54 | * @dev: I2O device to claim |
55 | * @drv: I2O driver which wants to claim the device | |
56 | * | |
57 | * Do the leg work to assign a device to a given OSM. If the claim succeed | |
58 | * the owner of the rimary. If the attempt fails a negative errno code | |
59 | * is returned. On success zero is returned. | |
60 | */ | |
61 | int i2o_device_claim(struct i2o_device *dev) | |
62 | { | |
63 | int rc = 0; | |
64 | ||
65 | down(&dev->lock); | |
66 | ||
67 | rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_CLAIM, I2O_CLAIM_PRIMARY); | |
68 | if (!rc) | |
69 | pr_debug("i2o: claim of device %d succeded\n", | |
70 | dev->lct_data.tid); | |
71 | else | |
72 | pr_debug("i2o: claim of device %d failed %d\n", | |
73 | dev->lct_data.tid, rc); | |
74 | ||
75 | up(&dev->lock); | |
76 | ||
77 | return rc; | |
4f5ca09e | 78 | } |
1da177e4 LT |
79 | |
80 | /** | |
81 | * i2o_device_claim_release - release a device that the OSM is using | |
82 | * @dev: device to release | |
83 | * @drv: driver which claimed the device | |
84 | * | |
85 | * Drop a claim by an OSM on a given I2O device. | |
86 | * | |
87 | * AC - some devices seem to want to refuse an unclaim until they have | |
88 | * finished internal processing. It makes sense since you don't want a | |
89 | * new device to go reconfiguring the entire system until you are done. | |
90 | * Thus we are prepared to wait briefly. | |
91 | * | |
92 | * Returns 0 on success or negative error code on failure. | |
93 | */ | |
94 | int i2o_device_claim_release(struct i2o_device *dev) | |
95 | { | |
96 | int tries; | |
97 | int rc = 0; | |
98 | ||
99 | down(&dev->lock); | |
100 | ||
101 | /* | |
102 | * If the controller takes a nonblocking approach to | |
103 | * releases we have to sleep/poll for a few times. | |
104 | */ | |
105 | for (tries = 0; tries < 10; tries++) { | |
106 | rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_RELEASE, | |
107 | I2O_CLAIM_PRIMARY); | |
108 | if (!rc) | |
109 | break; | |
110 | ||
111 | ssleep(1); | |
112 | } | |
113 | ||
114 | if (!rc) | |
115 | pr_debug("i2o: claim release of device %d succeded\n", | |
116 | dev->lct_data.tid); | |
117 | else | |
118 | pr_debug("i2o: claim release of device %d failed %d\n", | |
119 | dev->lct_data.tid, rc); | |
120 | ||
121 | up(&dev->lock); | |
122 | ||
123 | return rc; | |
4f5ca09e DT |
124 | } |
125 | ||
1da177e4 LT |
126 | |
127 | /** | |
128 | * i2o_device_release - release the memory for a I2O device | |
129 | * @dev: I2O device which should be released | |
130 | * | |
131 | * Release the allocated memory. This function is called if refcount of | |
132 | * device reaches 0 automatically. | |
133 | */ | |
134 | static void i2o_device_release(struct device *dev) | |
135 | { | |
136 | struct i2o_device *i2o_dev = to_i2o_device(dev); | |
137 | ||
138 | pr_debug("i2o: device %s released\n", dev->bus_id); | |
139 | ||
140 | kfree(i2o_dev); | |
4f5ca09e | 141 | } |
1da177e4 | 142 | |
1da177e4 | 143 | |
4f5ca09e DT |
144 | /** |
145 | * i2o_device_class_show_class_id - Displays class id of I2O device | |
146 | * @cd: class device of which the class id should be displayed | |
147 | * @buf: buffer into which the class id should be printed | |
148 | * | |
149 | * Returns the number of bytes which are printed into the buffer. | |
150 | */ | |
7bd7b091 DT |
151 | static ssize_t i2o_device_show_class_id(struct device *dev, |
152 | struct device_attribute *attr, | |
153 | char *buf) | |
4f5ca09e | 154 | { |
7bd7b091 | 155 | struct i2o_device *i2o_dev = to_i2o_device(dev); |
1da177e4 | 156 | |
7bd7b091 | 157 | sprintf(buf, "0x%03x\n", i2o_dev->lct_data.class_id); |
4f5ca09e DT |
158 | return strlen(buf) + 1; |
159 | } | |
1da177e4 | 160 | |
4f5ca09e DT |
161 | /** |
162 | * i2o_device_class_show_tid - Displays TID of I2O device | |
163 | * @cd: class device of which the TID should be displayed | |
164 | * @buf: buffer into which the class id should be printed | |
165 | * | |
166 | * Returns the number of bytes which are printed into the buffer. | |
167 | */ | |
7bd7b091 DT |
168 | static ssize_t i2o_device_show_tid(struct device *dev, |
169 | struct device_attribute *attr, | |
170 | char *buf) | |
4f5ca09e | 171 | { |
7bd7b091 | 172 | struct i2o_device *i2o_dev = to_i2o_device(dev); |
4f5ca09e | 173 | |
7bd7b091 | 174 | sprintf(buf, "0x%03x\n", i2o_dev->lct_data.tid); |
4f5ca09e DT |
175 | return strlen(buf) + 1; |
176 | } | |
177 | ||
7bd7b091 DT |
178 | struct device_attribute i2o_device_attrs[] = { |
179 | __ATTR(class_id, S_IRUGO, i2o_device_show_class_id, NULL), | |
180 | __ATTR(tid, S_IRUGO, i2o_device_show_tid, NULL), | |
4f5ca09e | 181 | __ATTR_NULL |
1da177e4 LT |
182 | }; |
183 | ||
1da177e4 LT |
184 | /** |
185 | * i2o_device_alloc - Allocate a I2O device and initialize it | |
186 | * | |
187 | * Allocate the memory for a I2O device and initialize locks and lists | |
188 | * | |
189 | * Returns the allocated I2O device or a negative error code if the device | |
190 | * could not be allocated. | |
191 | */ | |
192 | static struct i2o_device *i2o_device_alloc(void) | |
193 | { | |
194 | struct i2o_device *dev; | |
195 | ||
196 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
197 | if (!dev) | |
198 | return ERR_PTR(-ENOMEM); | |
199 | ||
200 | memset(dev, 0, sizeof(*dev)); | |
201 | ||
202 | INIT_LIST_HEAD(&dev->list); | |
203 | init_MUTEX(&dev->lock); | |
204 | ||
205 | dev->device.bus = &i2o_bus_type; | |
206 | dev->device.release = &i2o_device_release; | |
1da177e4 LT |
207 | |
208 | return dev; | |
4f5ca09e DT |
209 | } |
210 | ||
211 | /** | |
212 | * i2o_setup_sysfs_links - Adds attributes to the I2O device | |
213 | * @cd: I2O class device which is added to the I2O device class | |
214 | * | |
215 | * This function get called when a I2O device is added to the class. It | |
216 | * creates the attributes for each device and creates user/parent symlink | |
217 | * if necessary. | |
218 | * | |
219 | * Returns 0 on success or negative error code on failure. | |
220 | */ | |
221 | static void i2o_setup_sysfs_links(struct i2o_device *i2o_dev) | |
222 | { | |
223 | struct i2o_controller *c = i2o_dev->iop; | |
224 | struct i2o_device *tmp; | |
225 | ||
226 | /* create user entries for this device */ | |
227 | tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.user_tid); | |
228 | if (tmp && tmp != i2o_dev) | |
229 | sysfs_create_link(&i2o_dev->device.kobj, | |
230 | &tmp->device.kobj, "user"); | |
231 | ||
232 | /* create user entries refering to this device */ | |
233 | list_for_each_entry(tmp, &c->devices, list) | |
234 | if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid && | |
235 | tmp != i2o_dev) | |
236 | sysfs_create_link(&tmp->device.kobj, | |
237 | &i2o_dev->device.kobj, "user"); | |
238 | ||
239 | /* create parent entries for this device */ | |
240 | tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.parent_tid); | |
241 | if (tmp && tmp != i2o_dev) | |
242 | sysfs_create_link(&i2o_dev->device.kobj, | |
243 | &tmp->device.kobj, "parent"); | |
244 | ||
245 | /* create parent entries refering to this device */ | |
246 | list_for_each_entry(tmp, &c->devices, list) | |
247 | if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid && | |
248 | tmp != i2o_dev) | |
249 | sysfs_create_link(&tmp->device.kobj, | |
250 | &i2o_dev->device.kobj, "parent"); | |
251 | } | |
252 | ||
253 | static void i2o_remove_sysfs_links(struct i2o_device *i2o_dev) | |
254 | { | |
255 | struct i2o_controller *c = i2o_dev->iop; | |
256 | struct i2o_device *tmp; | |
257 | ||
258 | sysfs_remove_link(&i2o_dev->device.kobj, "parent"); | |
259 | sysfs_remove_link(&i2o_dev->device.kobj, "user"); | |
260 | ||
261 | list_for_each_entry(tmp, &c->devices, list) { | |
262 | if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid) | |
263 | sysfs_remove_link(&tmp->device.kobj, "parent"); | |
264 | if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid) | |
265 | sysfs_remove_link(&tmp->device.kobj, "user"); | |
266 | } | |
267 | } | |
268 | ||
269 | ||
1da177e4 LT |
270 | |
271 | /** | |
272 | * i2o_device_add - allocate a new I2O device and add it to the IOP | |
273 | * @iop: I2O controller where the device is on | |
274 | * @entry: LCT entry of the I2O device | |
275 | * | |
276 | * Allocate a new I2O device and initialize it with the LCT entry. The | |
277 | * device is appended to the device list of the controller. | |
278 | * | |
279 | * Returns a pointer to the I2O device on success or negative error code | |
280 | * on failure. | |
281 | */ | |
282 | static struct i2o_device *i2o_device_add(struct i2o_controller *c, | |
283 | i2o_lct_entry * entry) | |
284 | { | |
285 | struct i2o_device *dev; | |
286 | ||
287 | dev = i2o_device_alloc(); | |
288 | if (IS_ERR(dev)) { | |
289 | printk(KERN_ERR "i2o: unable to allocate i2o device\n"); | |
290 | return dev; | |
291 | } | |
292 | ||
293 | dev->lct_data = *entry; | |
4f5ca09e | 294 | dev->iop = c; |
1da177e4 LT |
295 | |
296 | snprintf(dev->device.bus_id, BUS_ID_SIZE, "%d:%03x", c->unit, | |
297 | dev->lct_data.tid); | |
298 | ||
1da177e4 LT |
299 | dev->device.parent = &c->device; |
300 | ||
301 | device_register(&dev->device); | |
302 | ||
303 | list_add_tail(&dev->list, &c->devices); | |
304 | ||
4f5ca09e DT |
305 | i2o_setup_sysfs_links(dev); |
306 | ||
1da177e4 LT |
307 | i2o_driver_notify_device_add_all(dev); |
308 | ||
309 | pr_debug("i2o: device %s added\n", dev->device.bus_id); | |
310 | ||
311 | return dev; | |
4f5ca09e | 312 | } |
1da177e4 LT |
313 | |
314 | /** | |
315 | * i2o_device_remove - remove an I2O device from the I2O core | |
316 | * @dev: I2O device which should be released | |
317 | * | |
318 | * Is used on I2O controller removal or LCT modification, when the device | |
319 | * is removed from the system. Note that the device could still hang | |
320 | * around until the refcount reaches 0. | |
321 | */ | |
322 | void i2o_device_remove(struct i2o_device *i2o_dev) | |
323 | { | |
324 | i2o_driver_notify_device_remove_all(i2o_dev); | |
4f5ca09e | 325 | i2o_remove_sysfs_links(i2o_dev); |
1da177e4 LT |
326 | list_del(&i2o_dev->list); |
327 | device_unregister(&i2o_dev->device); | |
4f5ca09e | 328 | } |
1da177e4 LT |
329 | |
330 | /** | |
331 | * i2o_device_parse_lct - Parse a previously fetched LCT and create devices | |
332 | * @c: I2O controller from which the LCT should be parsed. | |
333 | * | |
334 | * The Logical Configuration Table tells us what we can talk to on the | |
335 | * board. For every entry we create an I2O device, which is registered in | |
336 | * the I2O core. | |
337 | * | |
338 | * Returns 0 on success or negative error code on failure. | |
339 | */ | |
340 | int i2o_device_parse_lct(struct i2o_controller *c) | |
341 | { | |
342 | struct i2o_device *dev, *tmp; | |
343 | i2o_lct *lct; | |
344 | int i; | |
345 | int max; | |
346 | ||
347 | down(&c->lct_lock); | |
348 | ||
f88e119c | 349 | kfree(c->lct); |
1da177e4 LT |
350 | |
351 | lct = c->dlct.virt; | |
352 | ||
353 | c->lct = kmalloc(lct->table_size * 4, GFP_KERNEL); | |
354 | if (!c->lct) { | |
355 | up(&c->lct_lock); | |
356 | return -ENOMEM; | |
357 | } | |
358 | ||
359 | if (lct->table_size * 4 > c->dlct.len) { | |
9e87545f | 360 | memcpy(c->lct, c->dlct.virt, c->dlct.len); |
1da177e4 LT |
361 | up(&c->lct_lock); |
362 | return -EAGAIN; | |
363 | } | |
364 | ||
9e87545f | 365 | memcpy(c->lct, c->dlct.virt, lct->table_size * 4); |
1da177e4 LT |
366 | |
367 | lct = c->lct; | |
368 | ||
369 | max = (lct->table_size - 3) / 9; | |
370 | ||
371 | pr_debug("%s: LCT has %d entries (LCT size: %d)\n", c->name, max, | |
372 | lct->table_size); | |
373 | ||
374 | /* remove devices, which are not in the LCT anymore */ | |
375 | list_for_each_entry_safe(dev, tmp, &c->devices, list) { | |
376 | int found = 0; | |
377 | ||
378 | for (i = 0; i < max; i++) { | |
379 | if (lct->lct_entry[i].tid == dev->lct_data.tid) { | |
380 | found = 1; | |
381 | break; | |
382 | } | |
383 | } | |
384 | ||
385 | if (!found) | |
386 | i2o_device_remove(dev); | |
387 | } | |
388 | ||
389 | /* add new devices, which are new in the LCT */ | |
390 | for (i = 0; i < max; i++) { | |
391 | int found = 0; | |
392 | ||
393 | list_for_each_entry_safe(dev, tmp, &c->devices, list) { | |
394 | if (lct->lct_entry[i].tid == dev->lct_data.tid) { | |
395 | found = 1; | |
396 | break; | |
397 | } | |
398 | } | |
399 | ||
400 | if (!found) | |
401 | i2o_device_add(c, &lct->lct_entry[i]); | |
402 | } | |
403 | up(&c->lct_lock); | |
404 | ||
405 | return 0; | |
4f5ca09e | 406 | } |
1da177e4 | 407 | |
1da177e4 LT |
408 | |
409 | /* | |
410 | * Run time support routines | |
411 | */ | |
412 | ||
413 | /* Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET | |
414 | * | |
415 | * This function can be used for all UtilParamsGet/Set operations. | |
416 | * The OperationList is given in oplist-buffer, | |
417 | * and results are returned in reslist-buffer. | |
418 | * Note that the minimum sized reslist is 8 bytes and contains | |
419 | * ResultCount, ErrorInfoSize, BlockStatus and BlockSize. | |
420 | */ | |
f52bdbe9 | 421 | int i2o_parm_issue(struct i2o_device *i2o_dev, int cmd, void *oplist, |
f88e119c | 422 | int oplen, void *reslist, int reslen) |
1da177e4 LT |
423 | { |
424 | struct i2o_message __iomem *msg; | |
425 | u32 m; | |
426 | u32 *res32 = (u32 *) reslist; | |
427 | u32 *restmp = (u32 *) reslist; | |
428 | int len = 0; | |
429 | int i = 0; | |
430 | int rc; | |
431 | struct i2o_dma res; | |
432 | struct i2o_controller *c = i2o_dev->iop; | |
433 | struct device *dev = &c->pdev->dev; | |
434 | ||
435 | res.virt = NULL; | |
436 | ||
437 | if (i2o_dma_alloc(dev, &res, reslen, GFP_KERNEL)) | |
438 | return -ENOMEM; | |
439 | ||
440 | m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET); | |
441 | if (m == I2O_QUEUE_EMPTY) { | |
442 | i2o_dma_free(dev, &res); | |
443 | return -ETIMEDOUT; | |
444 | } | |
445 | ||
446 | i = 0; | |
447 | writel(cmd << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid, | |
448 | &msg->u.head[1]); | |
449 | writel(0, &msg->body[i++]); | |
450 | writel(0x4C000000 | oplen, &msg->body[i++]); /* OperationList */ | |
451 | memcpy_toio(&msg->body[i], oplist, oplen); | |
452 | i += (oplen / 4 + (oplen % 4 ? 1 : 0)); | |
453 | writel(0xD0000000 | res.len, &msg->body[i++]); /* ResultList */ | |
454 | writel(res.phys, &msg->body[i++]); | |
455 | ||
456 | writel(I2O_MESSAGE_SIZE(i + sizeof(struct i2o_message) / 4) | | |
457 | SGL_OFFSET_5, &msg->u.head[0]); | |
458 | ||
459 | rc = i2o_msg_post_wait_mem(c, m, 10, &res); | |
460 | ||
461 | /* This only looks like a memory leak - don't "fix" it. */ | |
462 | if (rc == -ETIMEDOUT) | |
463 | return rc; | |
464 | ||
9e87545f | 465 | memcpy(reslist, res.virt, res.len); |
1da177e4 LT |
466 | i2o_dma_free(dev, &res); |
467 | ||
468 | /* Query failed */ | |
469 | if (rc) | |
470 | return rc; | |
471 | /* | |
472 | * Calculate number of bytes of Result LIST | |
473 | * We need to loop through each Result BLOCK and grab the length | |
474 | */ | |
475 | restmp = res32 + 1; | |
476 | len = 1; | |
477 | for (i = 0; i < (res32[0] & 0X0000FFFF); i++) { | |
478 | if (restmp[0] & 0x00FF0000) { /* BlockStatus != SUCCESS */ | |
479 | printk(KERN_WARNING | |
480 | "%s - Error:\n ErrorInfoSize = 0x%02x, " | |
481 | "BlockStatus = 0x%02x, BlockSize = 0x%04x\n", | |
482 | (cmd == | |
483 | I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET" : | |
484 | "PARAMS_GET", res32[1] >> 24, | |
485 | (res32[1] >> 16) & 0xFF, res32[1] & 0xFFFF); | |
486 | ||
487 | /* | |
488 | * If this is the only request,than we return an error | |
489 | */ | |
490 | if ((res32[0] & 0x0000FFFF) == 1) { | |
491 | return -((res32[1] >> 16) & 0xFF); /* -BlockStatus */ | |
492 | } | |
493 | } | |
494 | len += restmp[0] & 0x0000FFFF; /* Length of res BLOCK */ | |
495 | restmp += restmp[0] & 0x0000FFFF; /* Skip to next BLOCK */ | |
496 | } | |
497 | return (len << 2); /* bytes used by result list */ | |
498 | } | |
499 | ||
500 | /* | |
501 | * Query one field group value or a whole scalar group. | |
502 | */ | |
503 | int i2o_parm_field_get(struct i2o_device *i2o_dev, int group, int field, | |
504 | void *buf, int buflen) | |
505 | { | |
506 | u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field }; | |
9e87545f | 507 | u8 *resblk; /* 8 bytes for header */ |
1da177e4 LT |
508 | int size; |
509 | ||
510 | if (field == -1) /* whole group */ | |
511 | opblk[4] = -1; | |
512 | ||
9e87545f ML |
513 | resblk = kmalloc(buflen + 8, GFP_KERNEL | GFP_ATOMIC); |
514 | if (!resblk) | |
515 | return -ENOMEM; | |
516 | ||
1da177e4 | 517 | size = i2o_parm_issue(i2o_dev, I2O_CMD_UTIL_PARAMS_GET, opblk, |
f88e119c | 518 | sizeof(opblk), resblk, buflen + 8); |
1da177e4 LT |
519 | |
520 | memcpy(buf, resblk + 8, buflen); /* cut off header */ | |
9e87545f ML |
521 | |
522 | kfree(resblk); | |
1da177e4 LT |
523 | |
524 | if (size > buflen) | |
525 | return buflen; | |
526 | ||
527 | return size; | |
528 | } | |
529 | ||
530 | /* | |
4f5ca09e DT |
531 | * if oper == I2O_PARAMS_TABLE_GET, get from all rows |
532 | * if fieldcount == -1 return all fields | |
1da177e4 | 533 | * ibuf and ibuflen are unused (use NULL, 0) |
4f5ca09e DT |
534 | * else return specific fields |
535 | * ibuf contains fieldindexes | |
1da177e4 LT |
536 | * |
537 | * if oper == I2O_PARAMS_LIST_GET, get from specific rows | |
538 | * if fieldcount == -1 return all fields | |
539 | * ibuf contains rowcount, keyvalues | |
540 | * else return specific fields | |
541 | * fieldcount is # of fieldindexes | |
542 | * ibuf contains fieldindexes, rowcount, keyvalues | |
543 | * | |
544 | * You could also use directly function i2o_issue_params(). | |
545 | */ | |
546 | int i2o_parm_table_get(struct i2o_device *dev, int oper, int group, | |
547 | int fieldcount, void *ibuf, int ibuflen, void *resblk, | |
548 | int reslen) | |
549 | { | |
550 | u16 *opblk; | |
551 | int size; | |
552 | ||
553 | size = 10 + ibuflen; | |
554 | if (size % 4) | |
555 | size += 4 - size % 4; | |
556 | ||
557 | opblk = kmalloc(size, GFP_KERNEL); | |
558 | if (opblk == NULL) { | |
559 | printk(KERN_ERR "i2o: no memory for query buffer.\n"); | |
560 | return -ENOMEM; | |
561 | } | |
562 | ||
563 | opblk[0] = 1; /* operation count */ | |
564 | opblk[1] = 0; /* pad */ | |
565 | opblk[2] = oper; | |
566 | opblk[3] = group; | |
567 | opblk[4] = fieldcount; | |
568 | memcpy(opblk + 5, ibuf, ibuflen); /* other params */ | |
569 | ||
570 | size = i2o_parm_issue(dev, I2O_CMD_UTIL_PARAMS_GET, opblk, | |
571 | size, resblk, reslen); | |
572 | ||
573 | kfree(opblk); | |
574 | if (size > reslen) | |
575 | return reslen; | |
576 | ||
577 | return size; | |
578 | } | |
579 | ||
1da177e4 LT |
580 | EXPORT_SYMBOL(i2o_device_claim); |
581 | EXPORT_SYMBOL(i2o_device_claim_release); | |
582 | EXPORT_SYMBOL(i2o_parm_field_get); | |
583 | EXPORT_SYMBOL(i2o_parm_table_get); | |
584 | EXPORT_SYMBOL(i2o_parm_issue); |