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1da177e4 LT |
1 | /* hermes.c |
2 | * | |
3 | * Driver core for the "Hermes" wireless MAC controller, as used in | |
4 | * the Lucent Orinoco and Cabletron RoamAbout cards. It should also | |
5 | * work on the hfa3841 and hfa3842 MAC controller chips used in the | |
6 | * Prism II chipsets. | |
7 | * | |
8 | * This is not a complete driver, just low-level access routines for | |
9 | * the MAC controller itself. | |
10 | * | |
11 | * Based on the prism2 driver from Absolute Value Systems' linux-wlan | |
12 | * project, the Linux wvlan_cs driver, Lucent's HCF-Light | |
13 | * (wvlan_hcf.c) library, and the NetBSD wireless driver (in no | |
14 | * particular order). | |
15 | * | |
16 | * Copyright (C) 2000, David Gibson, Linuxcare Australia. | |
17 | * (C) Copyright David Gibson, IBM Corp. 2001-2003. | |
18 | * | |
19 | * The contents of this file are subject to the Mozilla Public License | |
20 | * Version 1.1 (the "License"); you may not use this file except in | |
21 | * compliance with the License. You may obtain a copy of the License | |
22 | * at http://www.mozilla.org/MPL/ | |
23 | * | |
24 | * Software distributed under the License is distributed on an "AS IS" | |
25 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See | |
26 | * the License for the specific language governing rights and | |
27 | * limitations under the License. | |
28 | * | |
29 | * Alternatively, the contents of this file may be used under the | |
30 | * terms of the GNU General Public License version 2 (the "GPL"), in | |
31 | * which case the provisions of the GPL are applicable instead of the | |
32 | * above. If you wish to allow the use of your version of this file | |
33 | * only under the terms of the GPL and not to allow others to use your | |
34 | * version of this file under the MPL, indicate your decision by | |
35 | * deleting the provisions above and replace them with the notice and | |
36 | * other provisions required by the GPL. If you do not delete the | |
37 | * provisions above, a recipient may use your version of this file | |
38 | * under either the MPL or the GPL. | |
39 | */ | |
40 | ||
41 | #include <linux/config.h> | |
1da177e4 | 42 | #include <linux/module.h> |
1da177e4 | 43 | #include <linux/kernel.h> |
ef846bf0 PR |
44 | #include <linux/init.h> |
45 | #include <linux/delay.h> | |
1da177e4 LT |
46 | |
47 | #include "hermes.h" | |
48 | ||
49 | MODULE_DESCRIPTION("Low-level driver helper for Lucent Hermes chipset and Prism II HFA384x wireless MAC controller"); | |
50 | MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>" | |
51 | " & David Gibson <hermes@gibson.dropbear.id.au>"); | |
52 | MODULE_LICENSE("Dual MPL/GPL"); | |
53 | ||
54 | /* These are maximum timeouts. Most often, card wil react much faster */ | |
55 | #define CMD_BUSY_TIMEOUT (100) /* In iterations of ~1us */ | |
56 | #define CMD_INIT_TIMEOUT (50000) /* in iterations of ~10us */ | |
57 | #define CMD_COMPL_TIMEOUT (20000) /* in iterations of ~10us */ | |
58 | #define ALLOC_COMPL_TIMEOUT (1000) /* in iterations of ~10us */ | |
59 | ||
60 | /* | |
61 | * Debugging helpers | |
62 | */ | |
63 | ||
64 | #define DMSG(stuff...) do {printk(KERN_DEBUG "hermes @ %p: " , hw->iobase); \ | |
65 | printk(stuff);} while (0) | |
66 | ||
67 | #undef HERMES_DEBUG | |
68 | #ifdef HERMES_DEBUG | |
69 | #include <stdarg.h> | |
70 | ||
71 | #define DEBUG(lvl, stuff...) if ( (lvl) <= HERMES_DEBUG) DMSG(stuff) | |
72 | ||
73 | #else /* ! HERMES_DEBUG */ | |
74 | ||
75 | #define DEBUG(lvl, stuff...) do { } while (0) | |
76 | ||
77 | #endif /* ! HERMES_DEBUG */ | |
78 | ||
79 | ||
80 | /* | |
81 | * Internal functions | |
82 | */ | |
83 | ||
84 | /* Issue a command to the chip. Waiting for it to complete is the caller's | |
85 | problem. | |
86 | ||
87 | Returns -EBUSY if the command register is busy, 0 on success. | |
88 | ||
89 | Callable from any context. | |
90 | */ | |
91 | static int hermes_issue_cmd(hermes_t *hw, u16 cmd, u16 param0) | |
92 | { | |
93 | int k = CMD_BUSY_TIMEOUT; | |
94 | u16 reg; | |
95 | ||
96 | /* First wait for the command register to unbusy */ | |
97 | reg = hermes_read_regn(hw, CMD); | |
98 | while ( (reg & HERMES_CMD_BUSY) && k ) { | |
99 | k--; | |
100 | udelay(1); | |
101 | reg = hermes_read_regn(hw, CMD); | |
102 | } | |
103 | if (reg & HERMES_CMD_BUSY) { | |
104 | return -EBUSY; | |
105 | } | |
106 | ||
107 | hermes_write_regn(hw, PARAM2, 0); | |
108 | hermes_write_regn(hw, PARAM1, 0); | |
109 | hermes_write_regn(hw, PARAM0, param0); | |
110 | hermes_write_regn(hw, CMD, cmd); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | /* | |
116 | * Function definitions | |
117 | */ | |
118 | ||
119 | void hermes_struct_init(hermes_t *hw, void __iomem *address, int reg_spacing) | |
120 | { | |
121 | hw->iobase = address; | |
122 | hw->reg_spacing = reg_spacing; | |
123 | hw->inten = 0x0; | |
124 | ||
125 | #ifdef HERMES_DEBUG_BUFFER | |
126 | hw->dbufp = 0; | |
127 | memset(&hw->dbuf, 0xff, sizeof(hw->dbuf)); | |
128 | memset(&hw->profile, 0, sizeof(hw->profile)); | |
129 | #endif | |
130 | } | |
131 | ||
132 | int hermes_init(hermes_t *hw) | |
133 | { | |
134 | u16 status, reg; | |
135 | int err = 0; | |
136 | int k; | |
137 | ||
138 | /* We don't want to be interrupted while resetting the chipset */ | |
139 | hw->inten = 0x0; | |
140 | hermes_write_regn(hw, INTEN, 0); | |
141 | hermes_write_regn(hw, EVACK, 0xffff); | |
142 | ||
143 | /* Normally it's a "can't happen" for the command register to | |
144 | be busy when we go to issue a command because we are | |
145 | serializing all commands. However we want to have some | |
146 | chance of resetting the card even if it gets into a stupid | |
147 | state, so we actually wait to see if the command register | |
148 | will unbusy itself here. */ | |
149 | k = CMD_BUSY_TIMEOUT; | |
150 | reg = hermes_read_regn(hw, CMD); | |
151 | while (k && (reg & HERMES_CMD_BUSY)) { | |
152 | if (reg == 0xffff) /* Special case - the card has probably been removed, | |
153 | so don't wait for the timeout */ | |
154 | return -ENODEV; | |
155 | ||
156 | k--; | |
157 | udelay(1); | |
158 | reg = hermes_read_regn(hw, CMD); | |
159 | } | |
160 | ||
161 | /* No need to explicitly handle the timeout - if we've timed | |
162 | out hermes_issue_cmd() will probably return -EBUSY below */ | |
163 | ||
164 | /* According to the documentation, EVSTAT may contain | |
165 | obsolete event occurrence information. We have to acknowledge | |
166 | it by writing EVACK. */ | |
167 | reg = hermes_read_regn(hw, EVSTAT); | |
168 | hermes_write_regn(hw, EVACK, reg); | |
169 | ||
170 | /* We don't use hermes_docmd_wait here, because the reset wipes | |
171 | the magic constant in SWSUPPORT0 away, and it gets confused */ | |
172 | err = hermes_issue_cmd(hw, HERMES_CMD_INIT, 0); | |
173 | if (err) | |
174 | return err; | |
175 | ||
176 | reg = hermes_read_regn(hw, EVSTAT); | |
177 | k = CMD_INIT_TIMEOUT; | |
178 | while ( (! (reg & HERMES_EV_CMD)) && k) { | |
179 | k--; | |
180 | udelay(10); | |
181 | reg = hermes_read_regn(hw, EVSTAT); | |
182 | } | |
183 | ||
184 | hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC); | |
185 | ||
186 | if (! hermes_present(hw)) { | |
187 | DEBUG(0, "hermes @ 0x%x: Card removed during reset.\n", | |
188 | hw->iobase); | |
189 | err = -ENODEV; | |
190 | goto out; | |
191 | } | |
192 | ||
193 | if (! (reg & HERMES_EV_CMD)) { | |
194 | printk(KERN_ERR "hermes @ %p: " | |
195 | "Timeout waiting for card to reset (reg=0x%04x)!\n", | |
196 | hw->iobase, reg); | |
197 | err = -ETIMEDOUT; | |
198 | goto out; | |
199 | } | |
200 | ||
201 | status = hermes_read_regn(hw, STATUS); | |
202 | ||
203 | hermes_write_regn(hw, EVACK, HERMES_EV_CMD); | |
204 | ||
205 | if (status & HERMES_STATUS_RESULT) | |
206 | err = -EIO; | |
207 | ||
208 | out: | |
209 | return err; | |
210 | } | |
211 | ||
212 | /* Issue a command to the chip, and (busy!) wait for it to | |
213 | * complete. | |
214 | * | |
215 | * Returns: < 0 on internal error, 0 on success, > 0 on error returned by the firmware | |
216 | * | |
217 | * Callable from any context, but locking is your problem. */ | |
218 | int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0, | |
219 | struct hermes_response *resp) | |
220 | { | |
221 | int err; | |
222 | int k; | |
223 | u16 reg; | |
224 | u16 status; | |
225 | ||
226 | err = hermes_issue_cmd(hw, cmd, parm0); | |
227 | if (err) { | |
228 | if (! hermes_present(hw)) { | |
229 | if (net_ratelimit()) | |
230 | printk(KERN_WARNING "hermes @ %p: " | |
231 | "Card removed while issuing command " | |
232 | "0x%04x.\n", hw->iobase, cmd); | |
233 | err = -ENODEV; | |
234 | } else | |
235 | if (net_ratelimit()) | |
236 | printk(KERN_ERR "hermes @ %p: " | |
237 | "Error %d issuing command 0x%04x.\n", | |
238 | hw->iobase, err, cmd); | |
239 | goto out; | |
240 | } | |
241 | ||
242 | reg = hermes_read_regn(hw, EVSTAT); | |
243 | k = CMD_COMPL_TIMEOUT; | |
244 | while ( (! (reg & HERMES_EV_CMD)) && k) { | |
245 | k--; | |
246 | udelay(10); | |
247 | reg = hermes_read_regn(hw, EVSTAT); | |
248 | } | |
249 | ||
250 | if (! hermes_present(hw)) { | |
251 | printk(KERN_WARNING "hermes @ %p: Card removed " | |
252 | "while waiting for command 0x%04x completion.\n", | |
253 | hw->iobase, cmd); | |
254 | err = -ENODEV; | |
255 | goto out; | |
256 | } | |
257 | ||
258 | if (! (reg & HERMES_EV_CMD)) { | |
259 | printk(KERN_ERR "hermes @ %p: Timeout waiting for " | |
260 | "command 0x%04x completion.\n", hw->iobase, cmd); | |
261 | err = -ETIMEDOUT; | |
262 | goto out; | |
263 | } | |
264 | ||
265 | status = hermes_read_regn(hw, STATUS); | |
266 | if (resp) { | |
267 | resp->status = status; | |
268 | resp->resp0 = hermes_read_regn(hw, RESP0); | |
269 | resp->resp1 = hermes_read_regn(hw, RESP1); | |
270 | resp->resp2 = hermes_read_regn(hw, RESP2); | |
271 | } | |
272 | ||
273 | hermes_write_regn(hw, EVACK, HERMES_EV_CMD); | |
274 | ||
275 | if (status & HERMES_STATUS_RESULT) | |
276 | err = -EIO; | |
277 | ||
278 | out: | |
279 | return err; | |
280 | } | |
281 | ||
282 | int hermes_allocate(hermes_t *hw, u16 size, u16 *fid) | |
283 | { | |
284 | int err = 0; | |
285 | int k; | |
286 | u16 reg; | |
287 | ||
288 | if ( (size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX) ) | |
289 | return -EINVAL; | |
290 | ||
291 | err = hermes_docmd_wait(hw, HERMES_CMD_ALLOC, size, NULL); | |
292 | if (err) { | |
293 | return err; | |
294 | } | |
295 | ||
296 | reg = hermes_read_regn(hw, EVSTAT); | |
297 | k = ALLOC_COMPL_TIMEOUT; | |
298 | while ( (! (reg & HERMES_EV_ALLOC)) && k) { | |
299 | k--; | |
300 | udelay(10); | |
301 | reg = hermes_read_regn(hw, EVSTAT); | |
302 | } | |
303 | ||
304 | if (! hermes_present(hw)) { | |
305 | printk(KERN_WARNING "hermes @ %p: " | |
306 | "Card removed waiting for frame allocation.\n", | |
307 | hw->iobase); | |
308 | return -ENODEV; | |
309 | } | |
310 | ||
311 | if (! (reg & HERMES_EV_ALLOC)) { | |
312 | printk(KERN_ERR "hermes @ %p: " | |
313 | "Timeout waiting for frame allocation\n", | |
314 | hw->iobase); | |
315 | return -ETIMEDOUT; | |
316 | } | |
317 | ||
318 | *fid = hermes_read_regn(hw, ALLOCFID); | |
319 | hermes_write_regn(hw, EVACK, HERMES_EV_ALLOC); | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | ||
325 | /* Set up a BAP to read a particular chunk of data from card's internal buffer. | |
326 | * | |
327 | * Returns: < 0 on internal failure (errno), 0 on success, >0 on error | |
328 | * from firmware | |
329 | * | |
330 | * Callable from any context */ | |
331 | static int hermes_bap_seek(hermes_t *hw, int bap, u16 id, u16 offset) | |
332 | { | |
333 | int sreg = bap ? HERMES_SELECT1 : HERMES_SELECT0; | |
334 | int oreg = bap ? HERMES_OFFSET1 : HERMES_OFFSET0; | |
335 | int k; | |
336 | u16 reg; | |
337 | ||
338 | /* Paranoia.. */ | |
339 | if ( (offset > HERMES_BAP_OFFSET_MAX) || (offset % 2) ) | |
340 | return -EINVAL; | |
341 | ||
342 | k = HERMES_BAP_BUSY_TIMEOUT; | |
343 | reg = hermes_read_reg(hw, oreg); | |
344 | while ((reg & HERMES_OFFSET_BUSY) && k) { | |
345 | k--; | |
346 | udelay(1); | |
347 | reg = hermes_read_reg(hw, oreg); | |
348 | } | |
349 | ||
350 | #ifdef HERMES_DEBUG_BUFFER | |
351 | hw->profile[HERMES_BAP_BUSY_TIMEOUT - k]++; | |
352 | ||
353 | if (k < HERMES_BAP_BUSY_TIMEOUT) { | |
354 | struct hermes_debug_entry *e = | |
355 | &hw->dbuf[(hw->dbufp++) % HERMES_DEBUG_BUFSIZE]; | |
356 | e->bap = bap; | |
357 | e->id = id; | |
358 | e->offset = offset; | |
359 | e->cycles = HERMES_BAP_BUSY_TIMEOUT - k; | |
360 | } | |
361 | #endif | |
362 | ||
363 | if (reg & HERMES_OFFSET_BUSY) | |
364 | return -ETIMEDOUT; | |
365 | ||
366 | /* Now we actually set up the transfer */ | |
367 | hermes_write_reg(hw, sreg, id); | |
368 | hermes_write_reg(hw, oreg, offset); | |
369 | ||
370 | /* Wait for the BAP to be ready */ | |
371 | k = HERMES_BAP_BUSY_TIMEOUT; | |
372 | reg = hermes_read_reg(hw, oreg); | |
373 | while ( (reg & (HERMES_OFFSET_BUSY | HERMES_OFFSET_ERR)) && k) { | |
374 | k--; | |
375 | udelay(1); | |
376 | reg = hermes_read_reg(hw, oreg); | |
377 | } | |
378 | ||
379 | if (reg != offset) { | |
380 | printk(KERN_ERR "hermes @ %p: BAP%d offset %s: " | |
381 | "reg=0x%x id=0x%x offset=0x%x\n", hw->iobase, bap, | |
382 | (reg & HERMES_OFFSET_BUSY) ? "timeout" : "error", | |
383 | reg, id, offset); | |
384 | ||
385 | if (reg & HERMES_OFFSET_BUSY) { | |
386 | return -ETIMEDOUT; | |
387 | } | |
388 | ||
389 | return -EIO; /* error or wrong offset */ | |
390 | } | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | /* Read a block of data from the chip's buffer, via the | |
396 | * BAP. Synchronization/serialization is the caller's problem. len | |
397 | * must be even. | |
398 | * | |
399 | * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware | |
400 | */ | |
401 | int hermes_bap_pread(hermes_t *hw, int bap, void *buf, unsigned len, | |
402 | u16 id, u16 offset) | |
403 | { | |
404 | int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; | |
405 | int err = 0; | |
406 | ||
407 | if ( (len < 0) || (len % 2) ) | |
408 | return -EINVAL; | |
409 | ||
410 | err = hermes_bap_seek(hw, bap, id, offset); | |
411 | if (err) | |
412 | goto out; | |
413 | ||
414 | /* Actually do the transfer */ | |
415 | hermes_read_words(hw, dreg, buf, len/2); | |
416 | ||
417 | out: | |
418 | return err; | |
419 | } | |
420 | ||
421 | /* Write a block of data to the chip's buffer, via the | |
422 | * BAP. Synchronization/serialization is the caller's problem. len | |
423 | * must be even. | |
424 | * | |
425 | * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware | |
426 | */ | |
427 | int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, unsigned len, | |
428 | u16 id, u16 offset) | |
429 | { | |
430 | int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; | |
431 | int err = 0; | |
432 | ||
433 | if ( (len < 0) || (len % 2) ) | |
434 | return -EINVAL; | |
435 | ||
436 | err = hermes_bap_seek(hw, bap, id, offset); | |
437 | if (err) | |
438 | goto out; | |
439 | ||
440 | /* Actually do the transfer */ | |
441 | hermes_write_words(hw, dreg, buf, len/2); | |
442 | ||
443 | out: | |
444 | return err; | |
445 | } | |
446 | ||
2c36ed22 AC |
447 | /* Write a block of data to the chip's buffer with padding if |
448 | * neccessary, via the BAP. Synchronization/serialization is the | |
449 | * caller's problem. len must be even. | |
450 | * | |
451 | * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware | |
452 | */ | |
453 | int hermes_bap_pwrite_pad(hermes_t *hw, int bap, const void *buf, unsigned data_len, unsigned len, | |
454 | u16 id, u16 offset) | |
455 | { | |
456 | int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; | |
457 | int err = 0; | |
458 | ||
459 | if (len < 0 || len % 2 || data_len > len) | |
460 | return -EINVAL; | |
461 | ||
462 | err = hermes_bap_seek(hw, bap, id, offset); | |
463 | if (err) | |
464 | goto out; | |
465 | ||
466 | /* Transfer all the complete words of data */ | |
467 | hermes_write_words(hw, dreg, buf, data_len/2); | |
468 | /* If there is an odd byte left over pad and transfer it */ | |
469 | if (data_len & 1) { | |
470 | u8 end[2]; | |
471 | end[1] = 0; | |
472 | end[0] = ((unsigned char *)buf)[data_len - 1]; | |
473 | hermes_write_words(hw, dreg, end, 1); | |
474 | data_len ++; | |
475 | } | |
476 | /* Now send zeros for the padding */ | |
477 | if (data_len < len) | |
478 | hermes_clear_words(hw, dreg, (len - data_len) / 2); | |
479 | /* Complete */ | |
480 | out: | |
481 | return err; | |
482 | } | |
483 | ||
1da177e4 LT |
484 | /* Read a Length-Type-Value record from the card. |
485 | * | |
486 | * If length is NULL, we ignore the length read from the card, and | |
487 | * read the entire buffer regardless. This is useful because some of | |
488 | * the configuration records appear to have incorrect lengths in | |
489 | * practice. | |
490 | * | |
491 | * Callable from user or bh context. */ | |
492 | int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, unsigned bufsize, | |
493 | u16 *length, void *buf) | |
494 | { | |
495 | int err = 0; | |
496 | int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; | |
497 | u16 rlength, rtype; | |
498 | unsigned nwords; | |
499 | ||
500 | if ( (bufsize < 0) || (bufsize % 2) ) | |
501 | return -EINVAL; | |
502 | ||
503 | err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS, rid, NULL); | |
504 | if (err) | |
505 | return err; | |
506 | ||
507 | err = hermes_bap_seek(hw, bap, rid, 0); | |
508 | if (err) | |
509 | return err; | |
510 | ||
511 | rlength = hermes_read_reg(hw, dreg); | |
512 | ||
513 | if (! rlength) | |
514 | return -ENODATA; | |
515 | ||
516 | rtype = hermes_read_reg(hw, dreg); | |
517 | ||
518 | if (length) | |
519 | *length = rlength; | |
520 | ||
521 | if (rtype != rid) | |
522 | printk(KERN_WARNING "hermes @ %p: %s(): " | |
523 | "rid (0x%04x) does not match type (0x%04x)\n", | |
524 | hw->iobase, __FUNCTION__, rid, rtype); | |
525 | if (HERMES_RECLEN_TO_BYTES(rlength) > bufsize) | |
526 | printk(KERN_WARNING "hermes @ %p: " | |
527 | "Truncating LTV record from %d to %d bytes. " | |
528 | "(rid=0x%04x, len=0x%04x)\n", hw->iobase, | |
529 | HERMES_RECLEN_TO_BYTES(rlength), bufsize, rid, rlength); | |
530 | ||
531 | nwords = min((unsigned)rlength - 1, bufsize / 2); | |
532 | hermes_read_words(hw, dreg, buf, nwords); | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
537 | int hermes_write_ltv(hermes_t *hw, int bap, u16 rid, | |
538 | u16 length, const void *value) | |
539 | { | |
540 | int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; | |
541 | int err = 0; | |
542 | unsigned count; | |
543 | ||
544 | if (length == 0) | |
545 | return -EINVAL; | |
546 | ||
547 | err = hermes_bap_seek(hw, bap, rid, 0); | |
548 | if (err) | |
549 | return err; | |
550 | ||
551 | hermes_write_reg(hw, dreg, length); | |
552 | hermes_write_reg(hw, dreg, rid); | |
553 | ||
554 | count = length - 1; | |
555 | ||
556 | hermes_write_words(hw, dreg, value, count); | |
557 | ||
558 | err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS | HERMES_CMD_WRITE, | |
559 | rid, NULL); | |
560 | ||
561 | return err; | |
562 | } | |
563 | ||
564 | EXPORT_SYMBOL(hermes_struct_init); | |
565 | EXPORT_SYMBOL(hermes_init); | |
566 | EXPORT_SYMBOL(hermes_docmd_wait); | |
567 | EXPORT_SYMBOL(hermes_allocate); | |
568 | ||
569 | EXPORT_SYMBOL(hermes_bap_pread); | |
570 | EXPORT_SYMBOL(hermes_bap_pwrite); | |
2c36ed22 | 571 | EXPORT_SYMBOL(hermes_bap_pwrite_pad); |
1da177e4 LT |
572 | EXPORT_SYMBOL(hermes_read_ltv); |
573 | EXPORT_SYMBOL(hermes_write_ltv); | |
574 | ||
575 | static int __init init_hermes(void) | |
576 | { | |
577 | return 0; | |
578 | } | |
579 | ||
580 | static void __exit exit_hermes(void) | |
581 | { | |
582 | } | |
583 | ||
584 | module_init(init_hermes); | |
585 | module_exit(exit_hermes); |