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1 | /* |
2 | * Marvell Wireless LAN device driver: SDIO specific handling | |
3 | * | |
4 | * Copyright (C) 2011, Marvell International Ltd. | |
5 | * | |
6 | * This software file (the "File") is distributed by Marvell International | |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 | |
8 | * (the "License"). You may use, redistribute and/or modify this File in | |
9 | * accordance with the terms and conditions of the License, a copy of which | |
10 | * is available by writing to the Free Software Foundation, Inc., | |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the | |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. | |
13 | * | |
14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE | |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE | |
16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about | |
17 | * this warranty disclaimer. | |
18 | */ | |
19 | ||
20 | #include <linux/firmware.h> | |
21 | ||
22 | #include "decl.h" | |
23 | #include "ioctl.h" | |
24 | #include "util.h" | |
25 | #include "fw.h" | |
26 | #include "main.h" | |
27 | #include "wmm.h" | |
28 | #include "11n.h" | |
29 | #include "sdio.h" | |
30 | ||
31 | ||
32 | #define SDIO_VERSION "1.0" | |
33 | ||
34 | static struct mwifiex_if_ops sdio_ops; | |
35 | ||
36 | static struct semaphore add_remove_card_sem; | |
37 | ||
38 | /* | |
39 | * SDIO probe. | |
40 | * | |
41 | * This function probes an mwifiex device and registers it. It allocates | |
42 | * the card structure, enables SDIO function number and initiates the | |
43 | * device registration and initialization procedure by adding a logical | |
44 | * interface. | |
45 | */ | |
46 | static int | |
47 | mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) | |
48 | { | |
49 | int ret = 0; | |
50 | struct sdio_mmc_card *card = NULL; | |
51 | ||
52 | pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", | |
53 | func->vendor, func->device, func->class, func->num); | |
54 | ||
55 | card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); | |
56 | if (!card) { | |
57 | pr_err("%s: failed to alloc memory\n", __func__); | |
58 | return -ENOMEM; | |
59 | } | |
60 | ||
61 | card->func = func; | |
62 | ||
63 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; | |
64 | ||
65 | sdio_claim_host(func); | |
66 | ret = sdio_enable_func(func); | |
67 | sdio_release_host(func); | |
68 | ||
69 | if (ret) { | |
70 | pr_err("%s: failed to enable function\n", __func__); | |
71 | return -EIO; | |
72 | } | |
73 | ||
74 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops)) { | |
75 | pr_err("%s: add card failed\n", __func__); | |
76 | kfree(card); | |
77 | sdio_claim_host(func); | |
78 | ret = sdio_disable_func(func); | |
79 | sdio_release_host(func); | |
80 | ret = -1; | |
81 | } | |
82 | ||
83 | return ret; | |
84 | } | |
85 | ||
86 | /* | |
87 | * SDIO remove. | |
88 | * | |
89 | * This function removes the interface and frees up the card structure. | |
90 | */ | |
91 | static void | |
92 | mwifiex_sdio_remove(struct sdio_func *func) | |
93 | { | |
94 | struct sdio_mmc_card *card; | |
95 | ||
96 | pr_debug("info: SDIO func num=%d\n", func->num); | |
97 | ||
98 | if (func) { | |
99 | card = sdio_get_drvdata(func); | |
100 | if (card) { | |
101 | mwifiex_remove_card(card->adapter, | |
102 | &add_remove_card_sem); | |
103 | kfree(card); | |
104 | } | |
105 | } | |
106 | } | |
107 | ||
108 | /* | |
109 | * SDIO suspend. | |
110 | * | |
111 | * Kernel needs to suspend all functions separately. Therefore all | |
112 | * registered functions must have drivers with suspend and resume | |
113 | * methods. Failing that the kernel simply removes the whole card. | |
114 | * | |
115 | * If already not suspended, this function allocates and sends a host | |
116 | * sleep activate request to the firmware and turns off the traffic. | |
117 | */ | |
118 | static int mwifiex_sdio_suspend(struct device *dev) | |
119 | { | |
120 | struct sdio_func *func = dev_to_sdio_func(dev); | |
121 | struct sdio_mmc_card *card; | |
122 | struct mwifiex_adapter *adapter = NULL; | |
123 | mmc_pm_flag_t pm_flag = 0; | |
124 | int hs_actived = 0; | |
125 | int i; | |
126 | int ret = 0; | |
127 | ||
128 | if (func) { | |
129 | pm_flag = sdio_get_host_pm_caps(func); | |
130 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", | |
131 | sdio_func_id(func), pm_flag); | |
132 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { | |
133 | pr_err("%s: cannot remain alive while host is" | |
134 | " suspended\n", sdio_func_id(func)); | |
135 | return -ENOSYS; | |
136 | } | |
137 | ||
138 | card = sdio_get_drvdata(func); | |
139 | if (!card || !card->adapter) { | |
140 | pr_err("suspend: invalid card or adapter\n"); | |
141 | return 0; | |
142 | } | |
143 | } else { | |
144 | pr_err("suspend: sdio_func is not specified\n"); | |
145 | return 0; | |
146 | } | |
147 | ||
148 | adapter = card->adapter; | |
149 | ||
150 | /* Enable the Host Sleep */ | |
151 | hs_actived = mwifiex_enable_hs(adapter); | |
152 | if (hs_actived) { | |
153 | pr_debug("cmd: suspend with MMC_PM_KEEP_POWER\n"); | |
154 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
155 | } | |
156 | ||
157 | /* Indicate device suspended */ | |
158 | adapter->is_suspended = true; | |
159 | ||
160 | for (i = 0; i < adapter->priv_num; i++) | |
161 | netif_carrier_off(adapter->priv[i]->netdev); | |
162 | ||
163 | return ret; | |
164 | } | |
165 | ||
166 | /* | |
167 | * SDIO resume. | |
168 | * | |
169 | * Kernel needs to suspend all functions separately. Therefore all | |
170 | * registered functions must have drivers with suspend and resume | |
171 | * methods. Failing that the kernel simply removes the whole card. | |
172 | * | |
173 | * If already not resumed, this function turns on the traffic and | |
174 | * sends a host sleep cancel request to the firmware. | |
175 | */ | |
176 | static int mwifiex_sdio_resume(struct device *dev) | |
177 | { | |
178 | struct sdio_func *func = dev_to_sdio_func(dev); | |
179 | struct sdio_mmc_card *card; | |
180 | struct mwifiex_adapter *adapter = NULL; | |
181 | mmc_pm_flag_t pm_flag = 0; | |
182 | int i; | |
183 | ||
184 | if (func) { | |
185 | pm_flag = sdio_get_host_pm_caps(func); | |
186 | card = sdio_get_drvdata(func); | |
187 | if (!card || !card->adapter) { | |
188 | pr_err("resume: invalid card or adapter\n"); | |
189 | return 0; | |
190 | } | |
191 | } else { | |
192 | pr_err("resume: sdio_func is not specified\n"); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | adapter = card->adapter; | |
197 | ||
198 | if (!adapter->is_suspended) { | |
199 | dev_warn(adapter->dev, "device already resumed\n"); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | adapter->is_suspended = false; | |
204 | ||
205 | for (i = 0; i < adapter->priv_num; i++) | |
206 | if (adapter->priv[i]->media_connected) | |
207 | netif_carrier_on(adapter->priv[i]->netdev); | |
208 | ||
209 | /* Disable Host Sleep */ | |
210 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
211 | MWIFIEX_NO_WAIT); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | /* Device ID for SD8787 */ | |
217 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) | |
218 | ||
219 | /* WLAN IDs */ | |
220 | static const struct sdio_device_id mwifiex_ids[] = { | |
221 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)}, | |
222 | {}, | |
223 | }; | |
224 | ||
225 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); | |
226 | ||
227 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { | |
228 | .suspend = mwifiex_sdio_suspend, | |
229 | .resume = mwifiex_sdio_resume, | |
230 | }; | |
231 | ||
232 | static struct sdio_driver mwifiex_sdio = { | |
233 | .name = "mwifiex_sdio", | |
234 | .id_table = mwifiex_ids, | |
235 | .probe = mwifiex_sdio_probe, | |
236 | .remove = mwifiex_sdio_remove, | |
237 | .drv = { | |
238 | .owner = THIS_MODULE, | |
239 | .pm = &mwifiex_sdio_pm_ops, | |
240 | } | |
241 | }; | |
242 | ||
243 | /* | |
244 | * This function writes data into SDIO card register. | |
245 | */ | |
246 | static int | |
247 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u32 data) | |
248 | { | |
249 | struct sdio_mmc_card *card = adapter->card; | |
250 | int ret = -1; | |
251 | ||
252 | sdio_claim_host(card->func); | |
253 | sdio_writeb(card->func, (u8) data, reg, &ret); | |
254 | sdio_release_host(card->func); | |
255 | ||
256 | return ret; | |
257 | } | |
258 | ||
259 | /* | |
260 | * This function reads data from SDIO card register. | |
261 | */ | |
262 | static int | |
263 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u32 *data) | |
264 | { | |
265 | struct sdio_mmc_card *card = adapter->card; | |
266 | int ret = -1; | |
267 | u8 val; | |
268 | ||
269 | sdio_claim_host(card->func); | |
270 | val = sdio_readb(card->func, reg, &ret); | |
271 | sdio_release_host(card->func); | |
272 | ||
273 | *data = val; | |
274 | ||
275 | return ret; | |
276 | } | |
277 | ||
278 | /* | |
279 | * This function writes multiple data into SDIO card memory. | |
280 | * | |
281 | * This does not work in suspended mode. | |
282 | */ | |
283 | static int | |
284 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, | |
285 | u8 *buffer, u32 pkt_len, u32 port, u32 timeout) | |
286 | { | |
287 | struct sdio_mmc_card *card = adapter->card; | |
288 | int ret = -1; | |
289 | u8 blk_mode = | |
290 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
291 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
292 | u32 blk_cnt = | |
293 | (blk_mode == | |
294 | BLOCK_MODE) ? (pkt_len / | |
295 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; | |
296 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
297 | ||
298 | if (adapter->is_suspended) { | |
299 | dev_err(adapter->dev, | |
300 | "%s: not allowed while suspended\n", __func__); | |
301 | return -1; | |
302 | } | |
303 | ||
304 | sdio_claim_host(card->func); | |
305 | ||
306 | if (!sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size)) | |
307 | ret = 0; | |
308 | ||
309 | sdio_release_host(card->func); | |
310 | ||
311 | return ret; | |
312 | } | |
313 | ||
314 | /* | |
315 | * This function reads multiple data from SDIO card memory. | |
316 | */ | |
317 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, | |
318 | u8 *buffer, u32 len, | |
319 | u32 port, u32 timeout, u8 claim) | |
320 | { | |
321 | struct sdio_mmc_card *card = adapter->card; | |
322 | int ret = -1; | |
323 | u8 blk_mode = | |
324 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
325 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
326 | u32 blk_cnt = | |
327 | (blk_mode == | |
328 | BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) : len; | |
329 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
330 | ||
331 | if (claim) | |
332 | sdio_claim_host(card->func); | |
333 | ||
334 | if (!sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size)) | |
335 | ret = 0; | |
336 | ||
337 | if (claim) | |
338 | sdio_release_host(card->func); | |
339 | ||
340 | return ret; | |
341 | } | |
342 | ||
343 | /* | |
344 | * This function wakes up the card. | |
345 | * | |
346 | * A host power up command is written to the card configuration | |
347 | * register to wake up the card. | |
348 | */ | |
349 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
350 | { | |
351 | int ret; | |
352 | ||
353 | dev_dbg(adapter->dev, "event: wakeup device...\n"); | |
354 | ret = mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); | |
355 | ||
356 | return ret; | |
357 | } | |
358 | ||
359 | /* | |
360 | * This function is called after the card has woken up. | |
361 | * | |
362 | * The card configuration register is reset. | |
363 | */ | |
364 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
365 | { | |
366 | int ret; | |
367 | ||
368 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); | |
369 | ret = mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); | |
370 | ||
371 | return ret; | |
372 | } | |
373 | ||
374 | /* | |
375 | * This function initializes the IO ports. | |
376 | * | |
377 | * The following operations are performed - | |
378 | * - Read the IO ports (0, 1 and 2) | |
379 | * - Set host interrupt Reset-To-Read to clear | |
380 | * - Set auto re-enable interrupt | |
381 | */ | |
382 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) | |
383 | { | |
384 | u32 reg; | |
385 | ||
386 | adapter->ioport = 0; | |
387 | ||
388 | /* Read the IO port */ | |
389 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) | |
390 | adapter->ioport |= (reg & 0xff); | |
391 | else | |
392 | return -1; | |
393 | ||
394 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) | |
395 | adapter->ioport |= ((reg & 0xff) << 8); | |
396 | else | |
397 | return -1; | |
398 | ||
399 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) | |
400 | adapter->ioport |= ((reg & 0xff) << 16); | |
401 | else | |
402 | return -1; | |
403 | ||
404 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); | |
405 | ||
406 | /* Set Host interrupt reset to read to clear */ | |
407 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) | |
408 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, | |
409 | reg | SDIO_INT_MASK); | |
410 | else | |
411 | return -1; | |
412 | ||
413 | /* Dnld/Upld ready set to auto reset */ | |
414 | if (!mwifiex_read_reg(adapter, CARD_MISC_CFG_REG, ®)) | |
415 | mwifiex_write_reg(adapter, CARD_MISC_CFG_REG, | |
416 | reg | AUTO_RE_ENABLE_INT); | |
417 | else | |
418 | return -1; | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | /* | |
424 | * This function sends data to the card. | |
425 | */ | |
426 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, | |
427 | u8 *payload, u32 pkt_len, u32 port) | |
428 | { | |
429 | u32 i = 0; | |
430 | int ret = 0; | |
431 | ||
432 | do { | |
433 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, | |
434 | port, 0); | |
435 | if (ret) { | |
436 | i++; | |
437 | dev_err(adapter->dev, "host_to_card, write iomem" | |
438 | " (%d) failed: %d\n", i, ret); | |
439 | if (mwifiex_write_reg(adapter, | |
440 | CONFIGURATION_REG, 0x04)) | |
441 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
442 | ||
443 | ret = -1; | |
444 | if (i > MAX_WRITE_IOMEM_RETRY) | |
445 | return ret; | |
446 | } | |
447 | } while (ret == -1); | |
448 | ||
449 | return ret; | |
450 | } | |
451 | ||
452 | /* | |
453 | * This function gets the read port. | |
454 | * | |
455 | * If control port bit is set in MP read bitmap, the control port | |
456 | * is returned, otherwise the current read port is returned and | |
457 | * the value is increased (provided it does not reach the maximum | |
458 | * limit, in which case it is reset to 1) | |
459 | */ | |
460 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) | |
461 | { | |
462 | struct sdio_mmc_card *card = adapter->card; | |
463 | u16 rd_bitmap = card->mp_rd_bitmap; | |
464 | ||
465 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap); | |
466 | ||
467 | if (!(rd_bitmap & (CTRL_PORT_MASK | DATA_PORT_MASK))) | |
468 | return -1; | |
469 | ||
470 | if (card->mp_rd_bitmap & CTRL_PORT_MASK) { | |
471 | card->mp_rd_bitmap &= (u16) (~CTRL_PORT_MASK); | |
472 | *port = CTRL_PORT; | |
473 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%04x\n", | |
474 | *port, card->mp_rd_bitmap); | |
475 | } else { | |
476 | if (card->mp_rd_bitmap & (1 << card->curr_rd_port)) { | |
477 | card->mp_rd_bitmap &= | |
478 | (u16) (~(1 << card->curr_rd_port)); | |
479 | *port = card->curr_rd_port; | |
480 | ||
481 | if (++card->curr_rd_port == MAX_PORT) | |
482 | card->curr_rd_port = 1; | |
483 | } else { | |
484 | return -1; | |
485 | } | |
486 | ||
487 | dev_dbg(adapter->dev, | |
488 | "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n", | |
489 | *port, rd_bitmap, card->mp_rd_bitmap); | |
490 | } | |
491 | return 0; | |
492 | } | |
493 | ||
494 | /* | |
495 | * This function gets the write port for data. | |
496 | * | |
497 | * The current write port is returned if available and the value is | |
498 | * increased (provided it does not reach the maximum limit, in which | |
499 | * case it is reset to 1) | |
500 | */ | |
501 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u8 *port) | |
502 | { | |
503 | struct sdio_mmc_card *card = adapter->card; | |
504 | u16 wr_bitmap = card->mp_wr_bitmap; | |
505 | ||
506 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap); | |
507 | ||
508 | if (!(wr_bitmap & card->mp_data_port_mask)) | |
509 | return -1; | |
510 | ||
511 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { | |
512 | card->mp_wr_bitmap &= (u16) (~(1 << card->curr_wr_port)); | |
513 | *port = card->curr_wr_port; | |
514 | if (++card->curr_wr_port == card->mp_end_port) | |
515 | card->curr_wr_port = 1; | |
516 | } else { | |
517 | adapter->data_sent = true; | |
518 | return -EBUSY; | |
519 | } | |
520 | ||
521 | if (*port == CTRL_PORT) { | |
522 | dev_err(adapter->dev, "invalid data port=%d cur port=%d" | |
523 | " mp_wr_bitmap=0x%04x -> 0x%04x\n", | |
524 | *port, card->curr_wr_port, wr_bitmap, | |
525 | card->mp_wr_bitmap); | |
526 | return -1; | |
527 | } | |
528 | ||
529 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n", | |
530 | *port, wr_bitmap, card->mp_wr_bitmap); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | /* | |
536 | * This function polls the card status. | |
537 | */ | |
538 | static int | |
539 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) | |
540 | { | |
541 | u32 tries; | |
542 | u32 cs = 0; | |
543 | ||
544 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
545 | if (mwifiex_read_reg(adapter, CARD_STATUS_REG, &cs)) | |
546 | break; | |
547 | else if ((cs & bits) == bits) | |
548 | return 0; | |
549 | ||
550 | udelay(10); | |
551 | } | |
552 | ||
553 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", | |
554 | tries); | |
555 | return -1; | |
556 | } | |
557 | ||
558 | /* | |
559 | * This function reads the firmware status. | |
560 | */ | |
561 | static int | |
562 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) | |
563 | { | |
564 | u32 fws0 = 0, fws1 = 0; | |
565 | ||
566 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS0_REG, &fws0)) | |
567 | return -1; | |
568 | ||
569 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS1_REG, &fws1)) | |
570 | return -1; | |
571 | ||
572 | *dat = (u16) ((fws1 << 8) | fws0); | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
577 | /* | |
578 | * This function disables the host interrupt. | |
579 | * | |
580 | * The host interrupt mask is read, the disable bit is reset and | |
581 | * written back to the card host interrupt mask register. | |
582 | */ | |
583 | static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) | |
584 | { | |
585 | u32 host_int_mask = 0; | |
586 | ||
587 | /* Read back the host_int_mask register */ | |
588 | if (mwifiex_read_reg(adapter, HOST_INT_MASK_REG, &host_int_mask)) | |
589 | return -1; | |
590 | ||
591 | /* Update with the mask and write back to the register */ | |
592 | host_int_mask &= ~HOST_INT_DISABLE; | |
593 | ||
594 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, host_int_mask)) { | |
595 | dev_err(adapter->dev, "disable host interrupt failed\n"); | |
596 | return -1; | |
597 | } | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | /* | |
603 | * This function enables the host interrupt. | |
604 | * | |
605 | * The host interrupt enable mask is written to the card | |
606 | * host interrupt mask register. | |
607 | */ | |
608 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) | |
609 | { | |
610 | /* Simply write the mask to the register */ | |
611 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, HOST_INT_ENABLE)) { | |
612 | dev_err(adapter->dev, "enable host interrupt failed\n"); | |
613 | return -1; | |
614 | } | |
615 | return 0; | |
616 | } | |
617 | ||
618 | /* | |
619 | * This function sends a data buffer to the card. | |
620 | */ | |
621 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, | |
622 | u32 *type, u8 *buffer, | |
623 | u32 npayload, u32 ioport) | |
624 | { | |
625 | int ret = 0; | |
626 | u32 nb; | |
627 | ||
628 | if (!buffer) { | |
629 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); | |
630 | return -1; | |
631 | } | |
632 | ||
633 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 0, 1); | |
634 | ||
635 | if (ret) { | |
636 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, | |
637 | ret); | |
638 | return -1; | |
639 | } | |
640 | ||
641 | nb = le16_to_cpu(*(__le16 *) (buffer)); | |
642 | if (nb > npayload) { | |
643 | dev_err(adapter->dev, "%s: invalid packet, nb=%d, npayload=%d\n", | |
644 | __func__, nb, npayload); | |
645 | return -1; | |
646 | } | |
647 | ||
648 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); | |
649 | ||
650 | return ret; | |
651 | } | |
652 | ||
653 | /* | |
654 | * This function downloads the firmware to the card. | |
655 | * | |
656 | * Firmware is downloaded to the card in blocks. Every block download | |
657 | * is tested for CRC errors, and retried a number of times before | |
658 | * returning failure. | |
659 | */ | |
660 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
661 | struct mwifiex_fw_image *fw) | |
662 | { | |
663 | int ret = 0; | |
664 | u8 *firmware = fw->fw_buf; | |
665 | u32 firmware_len = fw->fw_len; | |
666 | u32 offset = 0; | |
667 | u32 base0, base1; | |
668 | u8 *fwbuf; | |
669 | u16 len = 0; | |
670 | u32 txlen = 0, tx_blocks = 0, tries = 0; | |
671 | u32 i = 0; | |
672 | ||
673 | if (!firmware_len) { | |
674 | dev_err(adapter->dev, "firmware image not found!" | |
675 | " Terminating download\n"); | |
676 | return -1; | |
677 | } | |
678 | ||
679 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", | |
680 | firmware_len); | |
681 | ||
682 | /* Assume that the allocated buffer is 8-byte aligned */ | |
683 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); | |
684 | if (!fwbuf) { | |
685 | dev_err(adapter->dev, "unable to alloc buffer for firmware." | |
686 | " Terminating download\n"); | |
687 | return -1; | |
688 | } | |
689 | ||
690 | /* Perform firmware data transfer */ | |
691 | do { | |
692 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY | |
693 | bits */ | |
694 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | | |
695 | DN_LD_CARD_RDY); | |
696 | if (ret) { | |
697 | dev_err(adapter->dev, "FW download with helper:" | |
698 | " poll status timeout @ %d\n", offset); | |
699 | goto done; | |
700 | } | |
701 | ||
702 | /* More data? */ | |
703 | if (offset >= firmware_len) | |
704 | break; | |
705 | ||
706 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
707 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_0, | |
708 | &base0); | |
709 | if (ret) { | |
710 | dev_err(adapter->dev, "dev BASE0 register read" | |
711 | " failed: base0=0x%04X(%d). Terminating " | |
712 | "download\n", base0, base0); | |
713 | goto done; | |
714 | } | |
715 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_1, | |
716 | &base1); | |
717 | if (ret) { | |
718 | dev_err(adapter->dev, "dev BASE1 register read" | |
719 | " failed: base1=0x%04X(%d). Terminating " | |
720 | "download\n", base1, base1); | |
721 | goto done; | |
722 | } | |
723 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); | |
724 | ||
725 | if (len) | |
726 | break; | |
727 | ||
728 | udelay(10); | |
729 | } | |
730 | ||
731 | if (!len) { | |
732 | break; | |
733 | } else if (len > MWIFIEX_UPLD_SIZE) { | |
734 | dev_err(adapter->dev, "FW download failed @ %d," | |
735 | " invalid length %d\n", offset, len); | |
736 | ret = -1; | |
737 | goto done; | |
738 | } | |
739 | ||
740 | txlen = len; | |
741 | ||
742 | if (len & BIT(0)) { | |
743 | i++; | |
744 | if (i > MAX_WRITE_IOMEM_RETRY) { | |
745 | dev_err(adapter->dev, "FW download failed @" | |
746 | " %d, over max retry count\n", offset); | |
747 | ret = -1; | |
748 | goto done; | |
749 | } | |
750 | dev_err(adapter->dev, "CRC indicated by the helper:" | |
751 | " len = 0x%04X, txlen = %d\n", len, txlen); | |
752 | len &= ~BIT(0); | |
753 | /* Setting this to 0 to resend from same offset */ | |
754 | txlen = 0; | |
755 | } else { | |
756 | i = 0; | |
757 | ||
758 | /* Set blocksize to transfer - checking for last | |
759 | block */ | |
760 | if (firmware_len - offset < txlen) | |
761 | txlen = firmware_len - offset; | |
762 | ||
763 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - | |
764 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
765 | ||
766 | /* Copy payload to buffer */ | |
767 | memmove(fwbuf, &firmware[offset], txlen); | |
768 | } | |
769 | ||
770 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * | |
771 | MWIFIEX_SDIO_BLOCK_SIZE, | |
772 | adapter->ioport, 0); | |
773 | if (ret) { | |
774 | dev_err(adapter->dev, "FW download, write iomem (%d)" | |
775 | " failed @ %d\n", i, offset); | |
776 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) | |
777 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
778 | ||
779 | ret = -1; | |
780 | goto done; | |
781 | } | |
782 | ||
783 | offset += txlen; | |
784 | } while (true); | |
785 | ||
786 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", | |
787 | offset); | |
788 | ||
789 | ret = 0; | |
790 | done: | |
791 | kfree(fwbuf); | |
792 | return ret; | |
793 | } | |
794 | ||
795 | /* | |
796 | * This function checks the firmware status in card. | |
797 | * | |
798 | * The winner interface is also determined by this function. | |
799 | */ | |
800 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, | |
801 | u32 poll_num, int *winner) | |
802 | { | |
803 | int ret = 0; | |
804 | u16 firmware_stat; | |
805 | u32 tries; | |
806 | u32 winner_status; | |
807 | ||
808 | /* Wait for firmware initialization event */ | |
809 | for (tries = 0; tries < poll_num; tries++) { | |
810 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); | |
811 | if (ret) | |
812 | continue; | |
813 | if (firmware_stat == FIRMWARE_READY) { | |
814 | ret = 0; | |
815 | break; | |
816 | } else { | |
817 | mdelay(100); | |
818 | ret = -1; | |
819 | } | |
820 | } | |
821 | ||
822 | if (winner && ret) { | |
823 | if (mwifiex_read_reg | |
824 | (adapter, CARD_FW_STATUS0_REG, &winner_status)) | |
825 | winner_status = 0; | |
826 | ||
827 | if (winner_status) | |
828 | *winner = 0; | |
829 | else | |
830 | *winner = 1; | |
831 | } | |
832 | return ret; | |
833 | } | |
834 | ||
835 | /* | |
836 | * This function reads the interrupt status from card. | |
837 | */ | |
838 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) | |
839 | { | |
840 | struct sdio_mmc_card *card = adapter->card; | |
841 | u32 sdio_ireg = 0; | |
842 | unsigned long flags; | |
843 | ||
844 | if (mwifiex_read_data_sync(adapter, card->mp_regs, MAX_MP_REGS, | |
845 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0, | |
846 | 0)) { | |
847 | dev_err(adapter->dev, "read mp_regs failed\n"); | |
848 | return; | |
849 | } | |
850 | ||
851 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; | |
852 | if (sdio_ireg) { | |
853 | /* | |
854 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
855 | * Clear the interrupt status register | |
856 | */ | |
857 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); | |
858 | spin_lock_irqsave(&adapter->int_lock, flags); | |
859 | adapter->int_status |= sdio_ireg; | |
860 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
861 | } | |
862 | ||
863 | return; | |
864 | } | |
865 | ||
866 | /* | |
867 | * SDIO interrupt handler. | |
868 | * | |
869 | * This function reads the interrupt status from firmware and assigns | |
870 | * the main process in workqueue which will handle the interrupt. | |
871 | */ | |
872 | static void | |
873 | mwifiex_sdio_interrupt(struct sdio_func *func) | |
874 | { | |
875 | struct mwifiex_adapter *adapter; | |
876 | struct sdio_mmc_card *card; | |
877 | ||
878 | card = sdio_get_drvdata(func); | |
879 | if (!card || !card->adapter) { | |
880 | pr_debug("int: func=%p card=%p adapter=%p\n", | |
881 | func, card, card ? card->adapter : NULL); | |
882 | return; | |
883 | } | |
884 | adapter = card->adapter; | |
885 | ||
886 | if (adapter->surprise_removed) | |
887 | return; | |
888 | ||
889 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) | |
890 | adapter->ps_state = PS_STATE_AWAKE; | |
891 | ||
892 | mwifiex_interrupt_status(adapter); | |
893 | queue_work(adapter->workqueue, &adapter->main_work); | |
894 | ||
895 | return; | |
896 | } | |
897 | ||
898 | /* | |
899 | * This function decodes a received packet. | |
900 | * | |
901 | * Based on the type, the packet is treated as either a data, or | |
902 | * a command response, or an event, and the correct handler | |
903 | * function is invoked. | |
904 | */ | |
905 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, | |
906 | struct sk_buff *skb, u32 upld_typ) | |
907 | { | |
908 | u8 *cmd_buf; | |
909 | ||
910 | skb_pull(skb, INTF_HEADER_LEN); | |
911 | ||
912 | switch (upld_typ) { | |
913 | case MWIFIEX_TYPE_DATA: | |
914 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); | |
915 | mwifiex_handle_rx_packet(adapter, skb); | |
916 | break; | |
917 | ||
918 | case MWIFIEX_TYPE_CMD: | |
919 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); | |
920 | /* take care of curr_cmd = NULL case */ | |
921 | if (!adapter->curr_cmd) { | |
922 | cmd_buf = adapter->upld_buf; | |
923 | ||
924 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) | |
925 | mwifiex_process_sleep_confirm_resp(adapter, | |
926 | skb->data, skb->len); | |
927 | ||
928 | memcpy(cmd_buf, skb->data, min_t(u32, | |
929 | MWIFIEX_SIZE_OF_CMD_BUFFER, skb->len)); | |
930 | ||
931 | dev_kfree_skb_any(skb); | |
932 | } else { | |
933 | adapter->cmd_resp_received = true; | |
934 | adapter->curr_cmd->resp_skb = skb; | |
935 | } | |
936 | break; | |
937 | ||
938 | case MWIFIEX_TYPE_EVENT: | |
939 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); | |
940 | adapter->event_cause = *(u32 *) skb->data; | |
941 | ||
942 | skb_pull(skb, MWIFIEX_EVENT_HEADER_LEN); | |
943 | ||
944 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) | |
945 | memcpy(adapter->event_body, skb->data, skb->len); | |
946 | ||
947 | /* event cause has been saved to adapter->event_cause */ | |
948 | adapter->event_received = true; | |
949 | adapter->event_skb = skb; | |
950 | ||
951 | break; | |
952 | ||
953 | default: | |
954 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); | |
955 | dev_kfree_skb_any(skb); | |
956 | break; | |
957 | } | |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
962 | /* | |
963 | * This function transfers received packets from card to driver, performing | |
964 | * aggregation if required. | |
965 | * | |
966 | * For data received on control port, or if aggregation is disabled, the | |
967 | * received buffers are uploaded as separate packets. However, if aggregation | |
968 | * is enabled and required, the buffers are copied onto an aggregation buffer, | |
969 | * provided there is space left, processed and finally uploaded. | |
970 | */ | |
971 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, | |
972 | struct sk_buff *skb, u8 port) | |
973 | { | |
974 | struct sdio_mmc_card *card = adapter->card; | |
975 | s32 f_do_rx_aggr = 0; | |
976 | s32 f_do_rx_cur = 0; | |
977 | s32 f_aggr_cur = 0; | |
978 | struct sk_buff *skb_deaggr; | |
979 | u32 pind = 0; | |
980 | u32 pkt_len, pkt_type = 0; | |
981 | u8 *curr_ptr; | |
982 | u32 rx_len = skb->len; | |
983 | ||
984 | if (port == CTRL_PORT) { | |
985 | /* Read the command Resp without aggr */ | |
986 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " | |
987 | "response\n", __func__); | |
988 | ||
989 | f_do_rx_cur = 1; | |
990 | goto rx_curr_single; | |
991 | } | |
992 | ||
993 | if (!card->mpa_rx.enabled) { | |
994 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", | |
995 | __func__); | |
996 | ||
997 | f_do_rx_cur = 1; | |
998 | goto rx_curr_single; | |
999 | } | |
1000 | ||
1001 | if (card->mp_rd_bitmap & (~((u16) CTRL_PORT_MASK))) { | |
1002 | /* Some more data RX pending */ | |
1003 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); | |
1004 | ||
1005 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1006 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { | |
1007 | f_aggr_cur = 1; | |
1008 | } else { | |
1009 | /* No room in Aggr buf, do rx aggr now */ | |
1010 | f_do_rx_aggr = 1; | |
1011 | f_do_rx_cur = 1; | |
1012 | } | |
1013 | } else { | |
1014 | /* Rx aggr not in progress */ | |
1015 | f_aggr_cur = 1; | |
1016 | } | |
1017 | ||
1018 | } else { | |
1019 | /* No more data RX pending */ | |
1020 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); | |
1021 | ||
1022 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1023 | f_do_rx_aggr = 1; | |
1024 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) | |
1025 | f_aggr_cur = 1; | |
1026 | else | |
1027 | /* No room in Aggr buf, do rx aggr now */ | |
1028 | f_do_rx_cur = 1; | |
1029 | } else { | |
1030 | f_do_rx_cur = 1; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | if (f_aggr_cur) { | |
1035 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); | |
1036 | /* Curr pkt can be aggregated */ | |
1037 | MP_RX_AGGR_SETUP(card, skb, port); | |
1038 | ||
1039 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || | |
1040 | MP_RX_AGGR_PORT_LIMIT_REACHED(card)) { | |
1041 | dev_dbg(adapter->dev, "info: %s: aggregated packet " | |
1042 | "limit reached\n", __func__); | |
1043 | /* No more pkts allowed in Aggr buf, rx it */ | |
1044 | f_do_rx_aggr = 1; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | if (f_do_rx_aggr) { | |
1049 | /* do aggr RX now */ | |
1050 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", | |
1051 | card->mpa_rx.pkt_cnt); | |
1052 | ||
1053 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, | |
1054 | card->mpa_rx.buf_len, | |
1055 | (adapter->ioport | 0x1000 | | |
1056 | (card->mpa_rx.ports << 4)) + | |
1057 | card->mpa_rx.start_port, 0, 1)) | |
1058 | return -1; | |
1059 | ||
1060 | curr_ptr = card->mpa_rx.buf; | |
1061 | ||
1062 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1063 | ||
1064 | /* get curr PKT len & type */ | |
1065 | pkt_len = *(u16 *) &curr_ptr[0]; | |
1066 | pkt_type = *(u16 *) &curr_ptr[2]; | |
1067 | ||
1068 | /* copy pkt to deaggr buf */ | |
1069 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1070 | ||
1071 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= | |
1072 | card->mpa_rx.len_arr[pind])) { | |
1073 | ||
1074 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); | |
1075 | ||
1076 | skb_trim(skb_deaggr, pkt_len); | |
1077 | ||
1078 | /* Process de-aggr packet */ | |
1079 | mwifiex_decode_rx_packet(adapter, skb_deaggr, | |
1080 | pkt_type); | |
1081 | } else { | |
1082 | dev_err(adapter->dev, "wrong aggr pkt:" | |
1083 | " type=%d len=%d max_len=%d\n", | |
1084 | pkt_type, pkt_len, | |
1085 | card->mpa_rx.len_arr[pind]); | |
1086 | dev_kfree_skb_any(skb_deaggr); | |
1087 | } | |
1088 | curr_ptr += card->mpa_rx.len_arr[pind]; | |
1089 | } | |
1090 | MP_RX_AGGR_BUF_RESET(card); | |
1091 | } | |
1092 | ||
1093 | rx_curr_single: | |
1094 | if (f_do_rx_cur) { | |
1095 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", | |
1096 | port, rx_len); | |
1097 | ||
1098 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, | |
1099 | skb->data, skb->len, | |
1100 | adapter->ioport + port)) | |
1101 | return -1; | |
1102 | ||
1103 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1104 | } | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | * This function checks the current interrupt status. | |
1111 | * | |
1112 | * The following interrupts are checked and handled by this function - | |
1113 | * - Data sent | |
1114 | * - Command sent | |
1115 | * - Packets received | |
1116 | * | |
1117 | * Since the firmware does not generate download ready interrupt if the | |
1118 | * port updated is command port only, command sent interrupt checking | |
1119 | * should be done manually, and for every SDIO interrupt. | |
1120 | * | |
1121 | * In case of Rx packets received, the packets are uploaded from card to | |
1122 | * host and processed accordingly. | |
1123 | */ | |
1124 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) | |
1125 | { | |
1126 | struct sdio_mmc_card *card = adapter->card; | |
1127 | int ret = 0; | |
1128 | u8 sdio_ireg; | |
1129 | struct sk_buff *skb = NULL; | |
1130 | u8 port = CTRL_PORT; | |
1131 | u32 len_reg_l, len_reg_u; | |
1132 | u32 rx_blocks; | |
1133 | u16 rx_len; | |
1134 | unsigned long flags; | |
1135 | ||
1136 | spin_lock_irqsave(&adapter->int_lock, flags); | |
1137 | sdio_ireg = adapter->int_status; | |
1138 | adapter->int_status = 0; | |
1139 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
1140 | ||
1141 | if (!sdio_ireg) | |
1142 | return ret; | |
1143 | ||
1144 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { | |
1145 | card->mp_wr_bitmap = ((u16) card->mp_regs[WR_BITMAP_U]) << 8; | |
1146 | card->mp_wr_bitmap |= (u16) card->mp_regs[WR_BITMAP_L]; | |
1147 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%04x\n", | |
1148 | card->mp_wr_bitmap); | |
1149 | if (adapter->data_sent && | |
1150 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { | |
1151 | dev_dbg(adapter->dev, | |
1152 | "info: <--- Tx DONE Interrupt --->\n"); | |
1153 | adapter->data_sent = false; | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | /* As firmware will not generate download ready interrupt if the port | |
1158 | updated is command port only, cmd_sent should be done for any SDIO | |
1159 | interrupt. */ | |
1160 | if (adapter->cmd_sent) { | |
1161 | /* Check if firmware has attach buffer at command port and | |
1162 | update just that in wr_bit_map. */ | |
1163 | card->mp_wr_bitmap |= | |
1164 | (u16) card->mp_regs[WR_BITMAP_L] & CTRL_PORT_MASK; | |
1165 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) | |
1166 | adapter->cmd_sent = false; | |
1167 | } | |
1168 | ||
1169 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", | |
1170 | adapter->cmd_sent, adapter->data_sent); | |
1171 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { | |
1172 | card->mp_rd_bitmap = ((u16) card->mp_regs[RD_BITMAP_U]) << 8; | |
1173 | card->mp_rd_bitmap |= (u16) card->mp_regs[RD_BITMAP_L]; | |
1174 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%04x\n", | |
1175 | card->mp_rd_bitmap); | |
1176 | ||
1177 | while (true) { | |
1178 | ret = mwifiex_get_rd_port(adapter, &port); | |
1179 | if (ret) { | |
1180 | dev_dbg(adapter->dev, | |
1181 | "info: no more rd_port available\n"); | |
1182 | break; | |
1183 | } | |
1184 | len_reg_l = RD_LEN_P0_L + (port << 1); | |
1185 | len_reg_u = RD_LEN_P0_U + (port << 1); | |
1186 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; | |
1187 | rx_len |= (u16) card->mp_regs[len_reg_l]; | |
1188 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", | |
1189 | port, rx_len); | |
1190 | rx_blocks = | |
1191 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - | |
1192 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
1193 | if (rx_len <= INTF_HEADER_LEN | |
1194 | || (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1195 | MWIFIEX_RX_DATA_BUF_SIZE) { | |
1196 | dev_err(adapter->dev, "invalid rx_len=%d\n", | |
1197 | rx_len); | |
1198 | return -1; | |
1199 | } | |
1200 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1201 | ||
1202 | skb = dev_alloc_skb(rx_len); | |
1203 | ||
1204 | if (!skb) { | |
1205 | dev_err(adapter->dev, "%s: failed to alloc skb", | |
1206 | __func__); | |
1207 | return -1; | |
1208 | } | |
1209 | ||
1210 | skb_put(skb, rx_len); | |
1211 | ||
1212 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", | |
1213 | rx_len, skb->len); | |
1214 | ||
1215 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, | |
1216 | port)) { | |
1217 | u32 cr = 0; | |
1218 | ||
1219 | dev_err(adapter->dev, "card_to_host_mpa failed:" | |
1220 | " int status=%#x\n", sdio_ireg); | |
1221 | if (mwifiex_read_reg(adapter, | |
1222 | CONFIGURATION_REG, &cr)) | |
1223 | dev_err(adapter->dev, | |
1224 | "read CFG reg failed\n"); | |
1225 | ||
1226 | dev_dbg(adapter->dev, | |
1227 | "info: CFG reg val = %d\n", cr); | |
1228 | if (mwifiex_write_reg(adapter, | |
1229 | CONFIGURATION_REG, | |
1230 | (cr | 0x04))) | |
1231 | dev_err(adapter->dev, | |
1232 | "write CFG reg failed\n"); | |
1233 | ||
1234 | dev_dbg(adapter->dev, "info: write success\n"); | |
1235 | if (mwifiex_read_reg(adapter, | |
1236 | CONFIGURATION_REG, &cr)) | |
1237 | dev_err(adapter->dev, | |
1238 | "read CFG reg failed\n"); | |
1239 | ||
1240 | dev_dbg(adapter->dev, | |
1241 | "info: CFG reg val =%x\n", cr); | |
1242 | dev_kfree_skb_any(skb); | |
1243 | return -1; | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * This function aggregates transmission buffers in driver and downloads | |
1253 | * the aggregated packet to card. | |
1254 | * | |
1255 | * The individual packets are aggregated by copying into an aggregation | |
1256 | * buffer and then downloaded to the card. Previous unsent packets in the | |
1257 | * aggregation buffer are pre-copied first before new packets are added. | |
1258 | * Aggregation is done till there is space left in the aggregation buffer, | |
1259 | * or till new packets are available. | |
1260 | * | |
1261 | * The function will only download the packet to the card when aggregation | |
1262 | * stops, otherwise it will just aggregate the packet in aggregation buffer | |
1263 | * and return. | |
1264 | */ | |
1265 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, | |
1266 | u8 *payload, u32 pkt_len, u8 port, | |
1267 | u32 next_pkt_len) | |
1268 | { | |
1269 | struct sdio_mmc_card *card = adapter->card; | |
1270 | int ret = 0; | |
1271 | s32 f_send_aggr_buf = 0; | |
1272 | s32 f_send_cur_buf = 0; | |
1273 | s32 f_precopy_cur_buf = 0; | |
1274 | s32 f_postcopy_cur_buf = 0; | |
1275 | ||
1276 | if ((!card->mpa_tx.enabled) || (port == CTRL_PORT)) { | |
1277 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", | |
1278 | __func__); | |
1279 | ||
1280 | f_send_cur_buf = 1; | |
1281 | goto tx_curr_single; | |
1282 | } | |
1283 | ||
1284 | if (next_pkt_len) { | |
1285 | /* More pkt in TX queue */ | |
1286 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", | |
1287 | __func__); | |
1288 | ||
1289 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1290 | if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card) && | |
1291 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { | |
1292 | f_precopy_cur_buf = 1; | |
1293 | ||
1294 | if (!(card->mp_wr_bitmap & | |
1295 | (1 << card->curr_wr_port)) | |
1296 | || !MP_TX_AGGR_BUF_HAS_ROOM( | |
1297 | card, next_pkt_len)) | |
1298 | f_send_aggr_buf = 1; | |
1299 | } else { | |
1300 | /* No room in Aggr buf, send it */ | |
1301 | f_send_aggr_buf = 1; | |
1302 | ||
1303 | if (MP_TX_AGGR_PORT_LIMIT_REACHED(card) || | |
1304 | !(card->mp_wr_bitmap & | |
1305 | (1 << card->curr_wr_port))) | |
1306 | f_send_cur_buf = 1; | |
1307 | else | |
1308 | f_postcopy_cur_buf = 1; | |
1309 | } | |
1310 | } else { | |
1311 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) | |
1312 | && (card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1313 | f_precopy_cur_buf = 1; | |
1314 | else | |
1315 | f_send_cur_buf = 1; | |
1316 | } | |
1317 | } else { | |
1318 | /* Last pkt in TX queue */ | |
1319 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", | |
1320 | __func__); | |
1321 | ||
1322 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1323 | /* some packs in Aggr buf already */ | |
1324 | f_send_aggr_buf = 1; | |
1325 | ||
1326 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) | |
1327 | f_precopy_cur_buf = 1; | |
1328 | else | |
1329 | /* No room in Aggr buf, send it */ | |
1330 | f_send_cur_buf = 1; | |
1331 | } else { | |
1332 | f_send_cur_buf = 1; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | if (f_precopy_cur_buf) { | |
1337 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", | |
1338 | __func__); | |
1339 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); | |
1340 | ||
1341 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || | |
1342 | MP_TX_AGGR_PORT_LIMIT_REACHED(card)) | |
1343 | /* No more pkts allowed in Aggr buf, send it */ | |
1344 | f_send_aggr_buf = 1; | |
1345 | } | |
1346 | ||
1347 | if (f_send_aggr_buf) { | |
1348 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", | |
1349 | __func__, | |
1350 | card->mpa_tx.start_port, card->mpa_tx.ports); | |
1351 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, | |
1352 | card->mpa_tx.buf_len, | |
1353 | (adapter->ioport | 0x1000 | | |
1354 | (card->mpa_tx.ports << 4)) + | |
1355 | card->mpa_tx.start_port); | |
1356 | ||
1357 | MP_TX_AGGR_BUF_RESET(card); | |
1358 | } | |
1359 | ||
1360 | tx_curr_single: | |
1361 | if (f_send_cur_buf) { | |
1362 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", | |
1363 | __func__, port); | |
1364 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, | |
1365 | adapter->ioport + port); | |
1366 | } | |
1367 | ||
1368 | if (f_postcopy_cur_buf) { | |
1369 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", | |
1370 | __func__); | |
1371 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); | |
1372 | } | |
1373 | ||
1374 | return ret; | |
1375 | } | |
1376 | ||
1377 | /* | |
1378 | * This function downloads data from driver to card. | |
1379 | * | |
1380 | * Both commands and data packets are transferred to the card by this | |
1381 | * function. | |
1382 | * | |
1383 | * This function adds the SDIO specific header to the front of the buffer | |
1384 | * before transferring. The header contains the length of the packet and | |
1385 | * the type. The firmware handles the packets based upon this set type. | |
1386 | */ | |
1387 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, | |
1388 | u8 type, u8 *payload, u32 pkt_len, | |
1389 | struct mwifiex_tx_param *tx_param) | |
1390 | { | |
1391 | struct sdio_mmc_card *card = adapter->card; | |
1392 | int ret = 0; | |
1393 | u32 buf_block_len; | |
1394 | u32 blk_size; | |
1395 | u8 port = CTRL_PORT; | |
1396 | ||
1397 | /* Allocate buffer and copy payload */ | |
1398 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; | |
1399 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; | |
1400 | *(u16 *) &payload[0] = (u16) pkt_len; | |
1401 | *(u16 *) &payload[2] = type; | |
1402 | ||
1403 | /* | |
1404 | * This is SDIO specific header | |
1405 | * u16 length, | |
1406 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, | |
1407 | * MWIFIEX_TYPE_EVENT = 3) | |
1408 | */ | |
1409 | if (type == MWIFIEX_TYPE_DATA) { | |
1410 | ret = mwifiex_get_wr_port_data(adapter, &port); | |
1411 | if (ret) { | |
1412 | dev_err(adapter->dev, "%s: no wr_port available\n", | |
1413 | __func__); | |
1414 | return ret; | |
1415 | } | |
1416 | } else { | |
1417 | adapter->cmd_sent = true; | |
1418 | /* Type must be MWIFIEX_TYPE_CMD */ | |
1419 | ||
1420 | if (pkt_len <= INTF_HEADER_LEN || | |
1421 | pkt_len > MWIFIEX_UPLD_SIZE) | |
1422 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", | |
1423 | __func__, payload, pkt_len); | |
1424 | } | |
1425 | ||
1426 | /* Transfer data to card */ | |
1427 | pkt_len = buf_block_len * blk_size; | |
1428 | ||
1429 | if (tx_param) | |
1430 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
1431 | port, tx_param->next_pkt_len); | |
1432 | else | |
1433 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
1434 | port, 0); | |
1435 | ||
1436 | if (ret) { | |
1437 | if (type == MWIFIEX_TYPE_CMD) | |
1438 | adapter->cmd_sent = false; | |
1439 | if (type == MWIFIEX_TYPE_DATA) | |
1440 | adapter->data_sent = false; | |
1441 | } else { | |
1442 | if (type == MWIFIEX_TYPE_DATA) { | |
1443 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1444 | adapter->data_sent = true; | |
1445 | else | |
1446 | adapter->data_sent = false; | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | /* | |
1454 | * This function allocates the MPA Tx and Rx buffers. | |
1455 | */ | |
1456 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, | |
1457 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) | |
1458 | { | |
1459 | struct sdio_mmc_card *card = adapter->card; | |
1460 | int ret = 0; | |
1461 | ||
1462 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); | |
1463 | if (!card->mpa_tx.buf) { | |
1464 | dev_err(adapter->dev, "could not alloc buffer for MP-A TX\n"); | |
1465 | ret = -1; | |
1466 | goto error; | |
1467 | } | |
1468 | ||
1469 | card->mpa_tx.buf_size = mpa_tx_buf_size; | |
1470 | ||
1471 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); | |
1472 | if (!card->mpa_rx.buf) { | |
1473 | dev_err(adapter->dev, "could not alloc buffer for MP-A RX\n"); | |
1474 | ret = -1; | |
1475 | goto error; | |
1476 | } | |
1477 | ||
1478 | card->mpa_rx.buf_size = mpa_rx_buf_size; | |
1479 | ||
1480 | error: | |
1481 | if (ret) { | |
1482 | kfree(card->mpa_tx.buf); | |
1483 | kfree(card->mpa_rx.buf); | |
1484 | } | |
1485 | ||
1486 | return ret; | |
1487 | } | |
1488 | ||
1489 | /* | |
1490 | * This function unregisters the SDIO device. | |
1491 | * | |
1492 | * The SDIO IRQ is released, the function is disabled and driver | |
1493 | * data is set to null. | |
1494 | */ | |
1495 | static void | |
1496 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1497 | { | |
1498 | struct sdio_mmc_card *card = adapter->card; | |
1499 | ||
1500 | if (adapter->card) { | |
1501 | /* Release the SDIO IRQ */ | |
1502 | sdio_claim_host(card->func); | |
1503 | sdio_release_irq(card->func); | |
1504 | sdio_disable_func(card->func); | |
1505 | sdio_release_host(card->func); | |
1506 | sdio_set_drvdata(card->func, NULL); | |
1507 | } | |
1508 | } | |
1509 | ||
1510 | /* | |
1511 | * This function registers the SDIO device. | |
1512 | * | |
1513 | * SDIO IRQ is claimed, block size is set and driver data is initialized. | |
1514 | */ | |
1515 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1516 | { | |
1517 | int ret = 0; | |
1518 | struct sdio_mmc_card *card = adapter->card; | |
1519 | struct sdio_func *func = card->func; | |
1520 | ||
1521 | /* save adapter pointer in card */ | |
1522 | card->adapter = adapter; | |
1523 | ||
1524 | sdio_claim_host(func); | |
1525 | ||
1526 | /* Request the SDIO IRQ */ | |
1527 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); | |
1528 | if (ret) { | |
1529 | pr_err("claim irq failed: ret=%d\n", ret); | |
1530 | goto disable_func; | |
1531 | } | |
1532 | ||
1533 | /* Set block size */ | |
1534 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); | |
1535 | if (ret) { | |
1536 | pr_err("cannot set SDIO block size\n"); | |
1537 | ret = -1; | |
1538 | goto release_irq; | |
1539 | } | |
1540 | ||
1541 | sdio_release_host(func); | |
1542 | sdio_set_drvdata(func, card); | |
1543 | ||
1544 | adapter->dev = &func->dev; | |
1545 | ||
1546 | return 0; | |
1547 | ||
1548 | release_irq: | |
1549 | sdio_release_irq(func); | |
1550 | disable_func: | |
1551 | sdio_disable_func(func); | |
1552 | sdio_release_host(func); | |
1553 | adapter->card = NULL; | |
1554 | ||
1555 | return -1; | |
1556 | } | |
1557 | ||
1558 | /* | |
1559 | * This function initializes the SDIO driver. | |
1560 | * | |
1561 | * The following initializations steps are followed - | |
1562 | * - Read the Host interrupt status register to acknowledge | |
1563 | * the first interrupt got from bootloader | |
1564 | * - Disable host interrupt mask register | |
1565 | * - Get SDIO port | |
1566 | * - Get revision ID | |
1567 | * - Initialize SDIO variables in card | |
1568 | * - Allocate MP registers | |
1569 | * - Allocate MPA Tx and Rx buffers | |
1570 | */ | |
1571 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) | |
1572 | { | |
1573 | struct sdio_mmc_card *card = adapter->card; | |
1574 | int ret; | |
1575 | u32 sdio_ireg = 0; | |
1576 | ||
1577 | /* | |
1578 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got | |
1579 | * from the bootloader. If we don't do this we get a interrupt | |
1580 | * as soon as we register the irq. | |
1581 | */ | |
1582 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); | |
1583 | ||
1584 | /* Disable host interrupt mask register for SDIO */ | |
1585 | mwifiex_sdio_disable_host_int(adapter); | |
1586 | ||
1587 | /* Get SDIO ioport */ | |
1588 | mwifiex_init_sdio_ioport(adapter); | |
1589 | ||
1590 | /* Get revision ID */ | |
1591 | #define REV_ID_REG 0x5c | |
1592 | mwifiex_read_reg(adapter, REV_ID_REG, &adapter->revision_id); | |
1593 | ||
1594 | /* Initialize SDIO variables in card */ | |
1595 | card->mp_rd_bitmap = 0; | |
1596 | card->mp_wr_bitmap = 0; | |
1597 | card->curr_rd_port = 1; | |
1598 | card->curr_wr_port = 1; | |
1599 | ||
1600 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1601 | ||
1602 | card->mpa_tx.buf_len = 0; | |
1603 | card->mpa_tx.pkt_cnt = 0; | |
1604 | card->mpa_tx.start_port = 0; | |
1605 | ||
1606 | card->mpa_tx.enabled = 0; | |
1607 | card->mpa_tx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; | |
1608 | ||
1609 | card->mpa_rx.buf_len = 0; | |
1610 | card->mpa_rx.pkt_cnt = 0; | |
1611 | card->mpa_rx.start_port = 0; | |
1612 | ||
1613 | card->mpa_rx.enabled = 0; | |
1614 | card->mpa_rx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; | |
1615 | ||
1616 | /* Allocate buffers for SDIO MP-A */ | |
1617 | card->mp_regs = kzalloc(MAX_MP_REGS, GFP_KERNEL); | |
1618 | if (!card->mp_regs) { | |
1619 | dev_err(adapter->dev, "failed to alloc mp_regs\n"); | |
1620 | return -1; | |
1621 | } | |
1622 | ||
1623 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, | |
1624 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, | |
1625 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); | |
1626 | if (ret) { | |
1627 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); | |
1628 | kfree(card->mp_regs); | |
1629 | return -1; | |
1630 | } | |
1631 | ||
1632 | return ret; | |
1633 | } | |
1634 | ||
1635 | /* | |
1636 | * This function resets the MPA Tx and Rx buffers. | |
1637 | */ | |
1638 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) | |
1639 | { | |
1640 | struct sdio_mmc_card *card = adapter->card; | |
1641 | ||
1642 | MP_TX_AGGR_BUF_RESET(card); | |
1643 | MP_RX_AGGR_BUF_RESET(card); | |
1644 | } | |
1645 | ||
1646 | /* | |
1647 | * This function cleans up the allocated card buffers. | |
1648 | * | |
1649 | * The following are freed by this function - | |
1650 | * - MP registers | |
1651 | * - MPA Tx buffer | |
1652 | * - MPA Rx buffer | |
1653 | */ | |
1654 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) | |
1655 | { | |
1656 | struct sdio_mmc_card *card = adapter->card; | |
1657 | ||
1658 | kfree(card->mp_regs); | |
1659 | kfree(card->mpa_tx.buf); | |
1660 | kfree(card->mpa_rx.buf); | |
1661 | } | |
1662 | ||
1663 | /* | |
1664 | * This function updates the MP end port in card. | |
1665 | */ | |
1666 | static void | |
1667 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) | |
1668 | { | |
1669 | struct sdio_mmc_card *card = adapter->card; | |
1670 | int i; | |
1671 | ||
1672 | card->mp_end_port = port; | |
1673 | ||
1674 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1675 | ||
1676 | for (i = 1; i <= MAX_PORT - card->mp_end_port; i++) | |
1677 | card->mp_data_port_mask &= ~(1 << (MAX_PORT - i)); | |
1678 | ||
1679 | card->curr_wr_port = 1; | |
1680 | ||
1681 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", | |
1682 | port, card->mp_data_port_mask); | |
1683 | } | |
1684 | ||
1685 | static struct mwifiex_if_ops sdio_ops = { | |
1686 | .init_if = mwifiex_init_sdio, | |
1687 | .cleanup_if = mwifiex_cleanup_sdio, | |
1688 | .check_fw_status = mwifiex_check_fw_status, | |
1689 | .prog_fw = mwifiex_prog_fw_w_helper, | |
1690 | .register_dev = mwifiex_register_dev, | |
1691 | .unregister_dev = mwifiex_unregister_dev, | |
1692 | .enable_int = mwifiex_sdio_enable_host_int, | |
1693 | .process_int_status = mwifiex_process_int_status, | |
1694 | .host_to_card = mwifiex_sdio_host_to_card, | |
1695 | .wakeup = mwifiex_pm_wakeup_card, | |
1696 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1697 | ||
1698 | /* SDIO specific */ | |
1699 | .update_mp_end_port = mwifiex_update_mp_end_port, | |
1700 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, | |
1701 | }; | |
1702 | ||
1703 | /* | |
1704 | * This function initializes the SDIO driver. | |
1705 | * | |
1706 | * This initiates the semaphore and registers the device with | |
1707 | * SDIO bus. | |
1708 | */ | |
1709 | static int | |
1710 | mwifiex_sdio_init_module(void) | |
1711 | { | |
1712 | int ret; | |
1713 | ||
1714 | sema_init(&add_remove_card_sem, 1); | |
1715 | ||
1716 | ret = sdio_register_driver(&mwifiex_sdio); | |
1717 | ||
1718 | return ret; | |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * This function cleans up the SDIO driver. | |
1723 | * | |
1724 | * The following major steps are followed for cleanup - | |
1725 | * - Resume the device if its suspended | |
1726 | * - Disconnect the device if connected | |
1727 | * - Shutdown the firmware | |
1728 | * - Unregister the device from SDIO bus. | |
1729 | */ | |
1730 | static void | |
1731 | mwifiex_sdio_cleanup_module(void) | |
1732 | { | |
1733 | struct mwifiex_adapter *adapter = g_adapter; | |
1734 | int i; | |
1735 | ||
1736 | if (down_interruptible(&add_remove_card_sem)) | |
1737 | goto exit_sem_err; | |
1738 | ||
1739 | if (!adapter || !adapter->priv_num) | |
1740 | goto exit; | |
1741 | ||
1742 | if (adapter->is_suspended) | |
1743 | mwifiex_sdio_resume(adapter->dev); | |
1744 | ||
1745 | for (i = 0; i < adapter->priv_num; i++) | |
1746 | if ((GET_BSS_ROLE(adapter->priv[i]) == MWIFIEX_BSS_ROLE_STA) && | |
1747 | adapter->priv[i]->media_connected) | |
1748 | mwifiex_disconnect(adapter->priv[i], MWIFIEX_CMD_WAIT, | |
1749 | NULL); | |
1750 | ||
1751 | if (!adapter->surprise_removed) | |
1752 | mwifiex_shutdown_fw(mwifiex_get_priv | |
1753 | (adapter, MWIFIEX_BSS_ROLE_ANY), | |
1754 | MWIFIEX_CMD_WAIT); | |
1755 | ||
1756 | exit: | |
1757 | up(&add_remove_card_sem); | |
1758 | ||
1759 | exit_sem_err: | |
1760 | sdio_unregister_driver(&mwifiex_sdio); | |
1761 | } | |
1762 | ||
1763 | module_init(mwifiex_sdio_init_module); | |
1764 | module_exit(mwifiex_sdio_cleanup_module); | |
1765 | ||
1766 | MODULE_AUTHOR("Marvell International Ltd."); | |
1767 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); | |
1768 | MODULE_VERSION(SDIO_VERSION); | |
1769 | MODULE_LICENSE("GPL v2"); | |
1770 | MODULE_FIRMWARE("sd8787.bin"); |