Commit | Line | Data |
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635d2b00 GKH |
1 | /* |
2 | * --------------------------------------------------------------------------- | |
3 | * FILE: os.c | |
4 | * | |
5 | * PURPOSE: | |
6 | * Routines to fulfil the OS-abstraction for the HIP lib. | |
7 | * It is part of the porting exercise. | |
8 | * | |
9 | * Copyright (C) 2005-2009 by Cambridge Silicon Radio Ltd. | |
10 | * | |
11 | * Refer to LICENSE.txt included with this source code for details on | |
12 | * the license terms. | |
13 | * | |
14 | * --------------------------------------------------------------------------- | |
15 | */ | |
16 | ||
17 | /** | |
18 | * The HIP lib OS abstraction consists of the implementation | |
19 | * of the functions in this file. It is part of the porting exercise. | |
20 | */ | |
21 | ||
22 | #include "unifi_priv.h" | |
23 | ||
24 | ||
25 | /* | |
26 | * --------------------------------------------------------------------------- | |
27 | * unifi_net_data_malloc | |
28 | * | |
29 | * Allocate an OS specific net data buffer of "size" bytes. | |
30 | * The bulk_data_slot.os_data_ptr must be initialised to point | |
31 | * to the buffer allocated. The bulk_data_slot.length must be | |
32 | * initialised to the requested size, zero otherwise. | |
33 | * The bulk_data_slot.os_net_buf_ptr can be initialised to | |
34 | * an OS specific pointer to be used in the unifi_net_data_free(). | |
35 | * | |
36 | * | |
37 | * Arguments: | |
38 | * ospriv Pointer to device private context struct. | |
39 | * bulk_data_slot Pointer to the bulk data structure to initialise. | |
40 | * size Size of the buffer to be allocated. | |
41 | * | |
42 | * Returns: | |
43 | * CSR_RESULT_SUCCESS on success, CSR_RESULT_FAILURE otherwise. | |
44 | * --------------------------------------------------------------------------- | |
45 | */ | |
46 | CsrResult | |
47 | unifi_net_data_malloc(void *ospriv, bulk_data_desc_t *bulk_data_slot, unsigned int size) | |
48 | { | |
49 | struct sk_buff *skb; | |
50 | unifi_priv_t *priv = (unifi_priv_t*)ospriv; | |
51 | int rounded_length; | |
52 | ||
53 | if (priv->card_info.sdio_block_size == 0) { | |
54 | unifi_error(priv, "unifi_net_data_malloc: Invalid SDIO block size\n"); | |
55 | return CSR_RESULT_FAILURE; | |
56 | } | |
57 | ||
58 | rounded_length = (size + priv->card_info.sdio_block_size - 1) & ~(priv->card_info.sdio_block_size - 1); | |
59 | ||
60 | /* | |
61 | * (ETH_HLEN + 2) bytes tailroom for header manipulation | |
62 | * CSR_WIFI_ALIGN_BYTES bytes headroom for alignment manipulation | |
63 | */ | |
64 | skb = dev_alloc_skb(rounded_length + 2 + ETH_HLEN + CSR_WIFI_ALIGN_BYTES); | |
65 | if (! skb) { | |
66 | unifi_error(ospriv, "alloc_skb failed.\n"); | |
67 | bulk_data_slot->os_net_buf_ptr = NULL; | |
68 | bulk_data_slot->net_buf_length = 0; | |
69 | bulk_data_slot->os_data_ptr = NULL; | |
70 | bulk_data_slot->data_length = 0; | |
71 | return CSR_RESULT_FAILURE; | |
72 | } | |
73 | ||
74 | bulk_data_slot->os_net_buf_ptr = (const unsigned char*)skb; | |
75 | bulk_data_slot->net_buf_length = rounded_length + 2 + ETH_HLEN + CSR_WIFI_ALIGN_BYTES; | |
76 | bulk_data_slot->os_data_ptr = (const void*)skb->data; | |
77 | bulk_data_slot->data_length = size; | |
78 | ||
79 | return CSR_RESULT_SUCCESS; | |
80 | } /* unifi_net_data_malloc() */ | |
81 | ||
82 | /* | |
83 | * --------------------------------------------------------------------------- | |
84 | * unifi_net_data_free | |
85 | * | |
86 | * Free an OS specific net data buffer. | |
87 | * The bulk_data_slot.length must be initialised to 0. | |
88 | * | |
89 | * | |
90 | * Arguments: | |
91 | * ospriv Pointer to device private context struct. | |
92 | * bulk_data_slot Pointer to the bulk data structure that | |
93 | * holds the data to be freed. | |
94 | * | |
95 | * Returns: | |
96 | * None. | |
97 | * --------------------------------------------------------------------------- | |
98 | */ | |
99 | void | |
100 | unifi_net_data_free(void *ospriv, bulk_data_desc_t *bulk_data_slot) | |
101 | { | |
102 | struct sk_buff *skb; | |
103 | CSR_UNUSED(ospriv); | |
104 | ||
105 | skb = (struct sk_buff *)bulk_data_slot->os_net_buf_ptr; | |
106 | dev_kfree_skb(skb); | |
107 | ||
108 | bulk_data_slot->net_buf_length = 0; | |
109 | bulk_data_slot->data_length = 0; | |
110 | bulk_data_slot->os_data_ptr = bulk_data_slot->os_net_buf_ptr = NULL; | |
111 | ||
112 | } /* unifi_net_data_free() */ | |
113 | ||
114 | ||
115 | /* | |
116 | * --------------------------------------------------------------------------- | |
117 | * unifi_net_dma_align | |
118 | * | |
119 | * DMA align an OS specific net data buffer. | |
120 | * The buffer must be empty. | |
121 | * | |
122 | * | |
123 | * Arguments: | |
124 | * ospriv Pointer to device private context struct. | |
125 | * bulk_data_slot Pointer to the bulk data structure that | |
126 | * holds the data to be aligned. | |
127 | * | |
128 | * Returns: | |
129 | * None. | |
130 | * --------------------------------------------------------------------------- | |
131 | */ | |
132 | CsrResult | |
133 | unifi_net_dma_align(void *ospriv, bulk_data_desc_t *bulk_data_slot) | |
134 | { | |
135 | struct sk_buff *skb; | |
136 | unsigned long buf_address; | |
137 | int offset; | |
138 | unifi_priv_t *priv = (unifi_priv_t*)ospriv; | |
139 | ||
140 | if ((bulk_data_slot == NULL) || (CSR_WIFI_ALIGN_BYTES == 0)) { | |
141 | return CSR_RESULT_SUCCESS; | |
142 | } | |
143 | ||
144 | if ((bulk_data_slot->os_data_ptr == NULL) || (bulk_data_slot->data_length == 0)) { | |
145 | return CSR_RESULT_SUCCESS; | |
146 | } | |
147 | ||
148 | buf_address = (unsigned long)(bulk_data_slot->os_data_ptr) & (CSR_WIFI_ALIGN_BYTES - 1); | |
149 | ||
150 | unifi_trace(priv, UDBG5, | |
151 | "unifi_net_dma_align: Allign buffer (0x%p) by %d bytes\n", | |
152 | bulk_data_slot->os_data_ptr, buf_address); | |
153 | ||
154 | offset = CSR_WIFI_ALIGN_BYTES - buf_address; | |
155 | if (offset < 0) { | |
156 | unifi_error(priv, "unifi_net_dma_align: Failed (offset=%d)\n", offset); | |
157 | return CSR_RESULT_FAILURE; | |
158 | } | |
159 | ||
160 | skb = (struct sk_buff*)(bulk_data_slot->os_net_buf_ptr); | |
161 | skb_reserve(skb, offset); | |
162 | bulk_data_slot->os_net_buf_ptr = (const unsigned char*)skb; | |
163 | bulk_data_slot->os_data_ptr = (const void*)(skb->data); | |
164 | ||
165 | return CSR_RESULT_SUCCESS; | |
166 | ||
167 | } /* unifi_net_dma_align() */ | |
168 | ||
169 | #ifdef ANDROID_TIMESTAMP | |
170 | static volatile unsigned int printk_cpu = UINT_MAX; | |
171 | char tbuf[30]; | |
172 | ||
173 | char* print_time(void ) | |
174 | { | |
175 | unsigned long long t; | |
176 | unsigned long nanosec_rem; | |
177 | ||
178 | t = cpu_clock(printk_cpu); | |
179 | nanosec_rem = do_div(t, 1000000000); | |
180 | sprintf(tbuf, "[%5lu.%06lu] ", | |
181 | (unsigned long) t, | |
182 | nanosec_rem / 1000); | |
183 | ||
184 | return tbuf; | |
185 | } | |
186 | #endif | |
187 | ||
188 | ||
189 | /* Module parameters */ | |
190 | extern int unifi_debug; | |
191 | ||
192 | #ifdef UNIFI_DEBUG | |
193 | #define DEBUG_BUFFER_SIZE 120 | |
194 | ||
195 | #define FORMAT_TRACE(_s, _len, _args, _fmt) \ | |
196 | do { \ | |
197 | va_start(_args, _fmt); \ | |
198 | _len += vsnprintf(&(_s)[_len], \ | |
199 | (DEBUG_BUFFER_SIZE - _len), \ | |
200 | _fmt, _args); \ | |
201 | va_end(_args); \ | |
202 | if (_len >= DEBUG_BUFFER_SIZE) { \ | |
203 | (_s)[DEBUG_BUFFER_SIZE - 2] = '\n'; \ | |
204 | (_s)[DEBUG_BUFFER_SIZE - 1] = 0; \ | |
205 | } \ | |
206 | } while (0) | |
635d2b00 GKH |
207 | |
208 | void | |
209 | unifi_error(void* ospriv, const char *fmt, ...) | |
210 | { | |
635d2b00 GKH |
211 | unifi_priv_t *priv = (unifi_priv_t*) ospriv; |
212 | char s[DEBUG_BUFFER_SIZE]; | |
213 | va_list args; | |
214 | unsigned int len; | |
215 | #ifdef ANDROID_TIMESTAMP | |
216 | if (priv != NULL) { | |
217 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "%s unifi%d: ", print_time(), priv->instance); | |
218 | } else { | |
219 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "%s unifi: ", print_time()); | |
220 | } | |
221 | #else | |
222 | if (priv != NULL) { | |
223 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "unifi%d: ", priv->instance); | |
224 | } else { | |
225 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "unifi: "); | |
226 | } | |
227 | #endif /* ANDROID_TIMESTAMP */ | |
228 | FORMAT_TRACE(s, len, args, fmt); | |
229 | ||
230 | printk("%s", s); | |
635d2b00 GKH |
231 | } |
232 | ||
233 | void | |
234 | unifi_warning(void* ospriv, const char *fmt, ...) | |
235 | { | |
635d2b00 GKH |
236 | unifi_priv_t *priv = (unifi_priv_t*) ospriv; |
237 | char s[DEBUG_BUFFER_SIZE]; | |
238 | va_list args; | |
239 | unsigned int len; | |
240 | ||
241 | #ifdef ANDROID_TIMESTAMP | |
242 | if (priv != NULL) { | |
243 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_WARNING "%s unifi%d: ", print_time(), priv->instance); | |
244 | } else { | |
245 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_WARNING "%s unifi: ", print_time()); | |
246 | } | |
247 | #else | |
248 | if (priv != NULL) { | |
249 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_WARNING "unifi%d: ", priv->instance); | |
250 | } else { | |
251 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_WARNING "unifi: "); | |
252 | } | |
253 | #endif /* ANDROID_TIMESTAMP */ | |
254 | ||
255 | FORMAT_TRACE(s, len, args, fmt); | |
256 | ||
257 | printk("%s", s); | |
635d2b00 GKH |
258 | } |
259 | ||
260 | ||
261 | void | |
262 | unifi_notice(void* ospriv, const char *fmt, ...) | |
263 | { | |
635d2b00 GKH |
264 | unifi_priv_t *priv = (unifi_priv_t*) ospriv; |
265 | char s[DEBUG_BUFFER_SIZE]; | |
266 | va_list args; | |
267 | unsigned int len; | |
268 | ||
269 | #ifdef ANDROID_TIMESTAMP | |
270 | if (priv != NULL) { | |
271 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_NOTICE "%s unifi%d: ", print_time(), priv->instance); | |
272 | } else { | |
273 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_NOTICE "%s unifi: ", print_time()); | |
274 | } | |
275 | #else | |
276 | if (priv != NULL) { | |
277 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_NOTICE "unifi%d: ", priv->instance); | |
278 | } else { | |
279 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_NOTICE "unifi: "); | |
280 | } | |
281 | #endif /* ANDROID_TIMESTAMP */ | |
282 | ||
283 | FORMAT_TRACE(s, len, args, fmt); | |
284 | ||
285 | printk("%s", s); | |
635d2b00 GKH |
286 | } |
287 | ||
288 | ||
289 | void | |
290 | unifi_info(void* ospriv, const char *fmt, ...) | |
291 | { | |
635d2b00 GKH |
292 | unifi_priv_t *priv = (unifi_priv_t*) ospriv; |
293 | char s[DEBUG_BUFFER_SIZE]; | |
294 | va_list args; | |
295 | unsigned int len; | |
296 | ||
297 | #ifdef ANDROID_TIMESTAMP | |
298 | if (priv != NULL) { | |
299 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_INFO "%s unifi%d: ", print_time(), priv->instance); | |
300 | } else { | |
301 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_INFO "%s unifi: ", print_time()); | |
302 | } | |
303 | #else | |
304 | if (priv != NULL) { | |
305 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_INFO "unifi%d: ", priv->instance); | |
306 | } else { | |
307 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_INFO "unifi: "); | |
308 | } | |
309 | #endif /* ANDROID_TIMESTAMP */ | |
310 | ||
311 | FORMAT_TRACE(s, len, args, fmt); | |
312 | ||
313 | printk("%s", s); | |
635d2b00 GKH |
314 | } |
315 | ||
316 | /* debugging */ | |
317 | void | |
318 | unifi_trace(void* ospriv, int level, const char *fmt, ...) | |
319 | { | |
635d2b00 GKH |
320 | unifi_priv_t *priv = (unifi_priv_t*) ospriv; |
321 | char s[DEBUG_BUFFER_SIZE]; | |
322 | va_list args; | |
323 | unsigned int len; | |
324 | ||
325 | if (unifi_debug >= level) { | |
326 | #ifdef ANDROID_TIMESTAMP | |
327 | if (priv != NULL) { | |
328 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "%s unifi%d: ", print_time(), priv->instance); | |
329 | } else { | |
330 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "%s unifi: ", print_time()); | |
331 | } | |
332 | #else | |
333 | if (priv != NULL) { | |
334 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "unifi%d: ", priv->instance); | |
335 | } else { | |
336 | len = snprintf(s, DEBUG_BUFFER_SIZE, KERN_ERR "unifi: "); | |
337 | } | |
338 | #endif /* ANDROID_TIMESTAMP */ | |
339 | ||
340 | FORMAT_TRACE(s, len, args, fmt); | |
341 | ||
342 | printk("%s", s); | |
343 | } | |
635d2b00 GKH |
344 | } |
345 | ||
95edd09e GKH |
346 | #else |
347 | ||
348 | void | |
349 | unifi_error_nop(void* ospriv, const char *fmt, ...) | |
350 | { | |
351 | } | |
352 | ||
353 | void | |
354 | unifi_trace_nop(void* ospriv, int level, const char *fmt, ...) | |
355 | { | |
356 | } | |
357 | ||
358 | #endif /* UNIFI_DEBUG */ | |
359 | ||
360 | ||
635d2b00 GKH |
361 | /* |
362 | * --------------------------------------------------------------------------- | |
363 | * | |
364 | * Debugging support. | |
365 | * | |
366 | * --------------------------------------------------------------------------- | |
367 | */ | |
368 | ||
369 | #ifdef UNIFI_DEBUG | |
370 | ||
371 | /* Memory dump with level filter controlled by unifi_debug */ | |
372 | void | |
8c87f69a | 373 | unifi_dump(void *ospriv, int level, const char *msg, void *mem, u16 len) |
635d2b00 GKH |
374 | { |
375 | unifi_priv_t *priv = (unifi_priv_t*) ospriv; | |
376 | ||
377 | if (unifi_debug >= level) { | |
378 | #ifdef ANDROID_TIMESTAMP | |
379 | if (priv != NULL) { | |
380 | printk(KERN_ERR "%s unifi%d: --- dump: %s ---\n", print_time(), priv->instance, msg ? msg : ""); | |
381 | } else { | |
382 | printk(KERN_ERR "%s unifi: --- dump: %s ---\n", print_time(), msg ? msg : ""); | |
383 | } | |
384 | #else | |
385 | if (priv != NULL) { | |
386 | printk(KERN_ERR "unifi%d: --- dump: %s ---\n", priv->instance, msg ? msg : ""); | |
387 | } else { | |
388 | printk(KERN_ERR "unifi: --- dump: %s ---\n", msg ? msg : ""); | |
389 | } | |
390 | #endif /* ANDROID_TIMESTAMP */ | |
391 | dump(mem, len); | |
392 | ||
393 | if (priv != NULL) { | |
394 | printk(KERN_ERR "unifi%d: --- end of dump ---\n", priv->instance); | |
395 | } else { | |
396 | printk(KERN_ERR "unifi: --- end of dump ---\n"); | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
401 | /* Memory dump that appears all the time, use sparingly */ | |
402 | void | |
8c87f69a | 403 | dump(void *mem, u16 len) |
635d2b00 GKH |
404 | { |
405 | int i, col = 0; | |
406 | unsigned char *pdata = (unsigned char *)mem; | |
407 | #ifdef ANDROID_TIMESTAMP | |
408 | printk("timestamp %s \n", print_time()); | |
409 | #endif /* ANDROID_TIMESTAMP */ | |
410 | if (mem == NULL) { | |
411 | printk("(null dump)\n"); | |
412 | return; | |
413 | } | |
414 | for (i = 0; i < len; i++) { | |
4933d393 | 415 | if (col == 0) |
635d2b00 | 416 | printk("0x%02X: ", i); |
635d2b00 GKH |
417 | |
418 | printk(" %02X", pdata[i]); | |
419 | ||
420 | if (++col == 16) { | |
421 | printk("\n"); | |
422 | col = 0; | |
423 | } | |
424 | } | |
4933d393 | 425 | if (col) |
635d2b00 | 426 | printk("\n"); |
635d2b00 GKH |
427 | } /* dump() */ |
428 | ||
429 | ||
430 | void | |
8c87f69a | 431 | dump16(void *mem, u16 len) |
635d2b00 GKH |
432 | { |
433 | int i, col=0; | |
434 | unsigned short *p = (unsigned short *)mem; | |
435 | #ifdef ANDROID_TIMESTAMP | |
436 | printk("timestamp %s \n", print_time()); | |
437 | #endif /* ANDROID_TIMESTAMP */ | |
438 | for (i = 0; i < len; i+=2) { | |
4933d393 | 439 | if (col == 0) |
635d2b00 | 440 | printk("0x%02X: ", i); |
635d2b00 GKH |
441 | |
442 | printk(" %04X", *p++); | |
443 | ||
444 | if (++col == 8) { | |
445 | printk("\n"); | |
446 | col = 0; | |
447 | } | |
448 | } | |
4933d393 | 449 | if (col) |
635d2b00 | 450 | printk("\n"); |
635d2b00 GKH |
451 | } |
452 | ||
453 | ||
454 | #ifdef CSR_WIFI_HIP_DEBUG_OFFLINE | |
455 | void | |
8c87f69a | 456 | dump_str(void *mem, u16 len) |
635d2b00 | 457 | { |
958bcf5b | 458 | int i; |
635d2b00 GKH |
459 | unsigned char *pdata = (unsigned char *)mem; |
460 | #ifdef ANDROID_TIMESTAMP | |
461 | printk("timestamp %s \n", print_time()); | |
462 | #endif /* ANDROID_TIMESTAMP */ | |
463 | for (i = 0; i < len; i++) { | |
464 | printk("%c", pdata[i]); | |
465 | } | |
958bcf5b | 466 | printk("\n"); |
635d2b00 GKH |
467 | |
468 | } /* dump_str() */ | |
469 | #endif /* CSR_ONLY_NOTES */ | |
470 | ||
471 | ||
472 | #endif /* UNIFI_DEBUG */ | |
473 | ||
474 | ||
475 | /* --------------------------------------------------------------------------- | |
476 | * - End - | |
477 | * ------------------------------------------------------------------------- */ |