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5e6e3a92 BZ |
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 | ||
287546df AK |
34 | /* The mwifiex_sdio_remove() callback function is called when |
35 | * user removes this module from kernel space or ejects | |
36 | * the card from the slot. The driver handles these 2 cases | |
37 | * differently. | |
38 | * If the user is removing the module, the few commands (FUNC_SHUTDOWN, | |
39 | * HS_CANCEL etc.) are sent to the firmware. | |
40 | * If the card is removed, there is no need to send these command. | |
41 | * | |
42 | * The variable 'user_rmmod' is used to distinguish these two | |
43 | * scenarios. This flag is initialized as FALSE in case the card | |
44 | * is removed, and will be set to TRUE for module removal when | |
45 | * module_exit function is called. | |
46 | */ | |
47 | static u8 user_rmmod; | |
48 | ||
5e6e3a92 BZ |
49 | static struct mwifiex_if_ops sdio_ops; |
50 | ||
51 | static struct semaphore add_remove_card_sem; | |
52 | ||
287546df AK |
53 | static int mwifiex_sdio_resume(struct device *dev); |
54 | ||
5e6e3a92 BZ |
55 | /* |
56 | * SDIO probe. | |
57 | * | |
58 | * This function probes an mwifiex device and registers it. It allocates | |
59 | * the card structure, enables SDIO function number and initiates the | |
60 | * device registration and initialization procedure by adding a logical | |
61 | * interface. | |
62 | */ | |
63 | static int | |
64 | mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) | |
65 | { | |
270e58e8 | 66 | int ret; |
5e6e3a92 BZ |
67 | struct sdio_mmc_card *card = NULL; |
68 | ||
69 | pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", | |
70 | func->vendor, func->device, func->class, func->num); | |
71 | ||
72 | card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); | |
73 | if (!card) { | |
74 | pr_err("%s: failed to alloc memory\n", __func__); | |
75 | return -ENOMEM; | |
76 | } | |
77 | ||
78 | card->func = func; | |
79 | ||
80 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; | |
81 | ||
82 | sdio_claim_host(func); | |
83 | ret = sdio_enable_func(func); | |
84 | sdio_release_host(func); | |
85 | ||
86 | if (ret) { | |
87 | pr_err("%s: failed to enable function\n", __func__); | |
b53575ec | 88 | kfree(card); |
5e6e3a92 BZ |
89 | return -EIO; |
90 | } | |
91 | ||
d930faee AK |
92 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops, |
93 | MWIFIEX_SDIO)) { | |
5e6e3a92 BZ |
94 | pr_err("%s: add card failed\n", __func__); |
95 | kfree(card); | |
96 | sdio_claim_host(func); | |
97 | ret = sdio_disable_func(func); | |
98 | sdio_release_host(func); | |
99 | ret = -1; | |
100 | } | |
101 | ||
102 | return ret; | |
103 | } | |
104 | ||
105 | /* | |
106 | * SDIO remove. | |
107 | * | |
108 | * This function removes the interface and frees up the card structure. | |
109 | */ | |
110 | static void | |
111 | mwifiex_sdio_remove(struct sdio_func *func) | |
112 | { | |
113 | struct sdio_mmc_card *card; | |
287546df AK |
114 | struct mwifiex_adapter *adapter; |
115 | int i; | |
5e6e3a92 BZ |
116 | |
117 | pr_debug("info: SDIO func num=%d\n", func->num); | |
118 | ||
287546df AK |
119 | card = sdio_get_drvdata(func); |
120 | if (!card) | |
121 | return; | |
122 | ||
123 | adapter = card->adapter; | |
124 | if (!adapter || !adapter->priv_num) | |
125 | return; | |
126 | ||
127 | if (user_rmmod) { | |
128 | if (adapter->is_suspended) | |
129 | mwifiex_sdio_resume(adapter->dev); | |
130 | ||
131 | for (i = 0; i < adapter->priv_num; i++) | |
132 | if ((GET_BSS_ROLE(adapter->priv[i]) == | |
133 | MWIFIEX_BSS_ROLE_STA) && | |
134 | adapter->priv[i]->media_connected) | |
135 | mwifiex_deauthenticate(adapter->priv[i], NULL); | |
136 | ||
a0490936 AK |
137 | mwifiex_disable_auto_ds(mwifiex_get_priv(adapter, |
138 | MWIFIEX_BSS_ROLE_ANY)); | |
139 | ||
287546df AK |
140 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, |
141 | MWIFIEX_BSS_ROLE_ANY), | |
142 | MWIFIEX_FUNC_SHUTDOWN); | |
5e6e3a92 | 143 | } |
287546df AK |
144 | |
145 | mwifiex_remove_card(card->adapter, &add_remove_card_sem); | |
146 | kfree(card); | |
5e6e3a92 BZ |
147 | } |
148 | ||
149 | /* | |
150 | * SDIO suspend. | |
151 | * | |
152 | * Kernel needs to suspend all functions separately. Therefore all | |
153 | * registered functions must have drivers with suspend and resume | |
154 | * methods. Failing that the kernel simply removes the whole card. | |
155 | * | |
156 | * If already not suspended, this function allocates and sends a host | |
157 | * sleep activate request to the firmware and turns off the traffic. | |
158 | */ | |
159 | static int mwifiex_sdio_suspend(struct device *dev) | |
160 | { | |
161 | struct sdio_func *func = dev_to_sdio_func(dev); | |
162 | struct sdio_mmc_card *card; | |
270e58e8 | 163 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
164 | mmc_pm_flag_t pm_flag = 0; |
165 | int hs_actived = 0; | |
166 | int i; | |
167 | int ret = 0; | |
168 | ||
169 | if (func) { | |
170 | pm_flag = sdio_get_host_pm_caps(func); | |
171 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", | |
172 | sdio_func_id(func), pm_flag); | |
173 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { | |
174 | pr_err("%s: cannot remain alive while host is" | |
175 | " suspended\n", sdio_func_id(func)); | |
176 | return -ENOSYS; | |
177 | } | |
178 | ||
179 | card = sdio_get_drvdata(func); | |
180 | if (!card || !card->adapter) { | |
181 | pr_err("suspend: invalid card or adapter\n"); | |
182 | return 0; | |
183 | } | |
184 | } else { | |
185 | pr_err("suspend: sdio_func is not specified\n"); | |
186 | return 0; | |
187 | } | |
188 | ||
189 | adapter = card->adapter; | |
190 | ||
191 | /* Enable the Host Sleep */ | |
192 | hs_actived = mwifiex_enable_hs(adapter); | |
193 | if (hs_actived) { | |
194 | pr_debug("cmd: suspend with MMC_PM_KEEP_POWER\n"); | |
195 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
196 | } | |
197 | ||
198 | /* Indicate device suspended */ | |
199 | adapter->is_suspended = true; | |
200 | ||
201 | for (i = 0; i < adapter->priv_num; i++) | |
202 | netif_carrier_off(adapter->priv[i]->netdev); | |
203 | ||
204 | return ret; | |
205 | } | |
206 | ||
207 | /* | |
208 | * SDIO resume. | |
209 | * | |
210 | * Kernel needs to suspend all functions separately. Therefore all | |
211 | * registered functions must have drivers with suspend and resume | |
212 | * methods. Failing that the kernel simply removes the whole card. | |
213 | * | |
214 | * If already not resumed, this function turns on the traffic and | |
215 | * sends a host sleep cancel request to the firmware. | |
216 | */ | |
217 | static int mwifiex_sdio_resume(struct device *dev) | |
218 | { | |
219 | struct sdio_func *func = dev_to_sdio_func(dev); | |
220 | struct sdio_mmc_card *card; | |
270e58e8 | 221 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
222 | mmc_pm_flag_t pm_flag = 0; |
223 | int i; | |
224 | ||
225 | if (func) { | |
226 | pm_flag = sdio_get_host_pm_caps(func); | |
227 | card = sdio_get_drvdata(func); | |
228 | if (!card || !card->adapter) { | |
229 | pr_err("resume: invalid card or adapter\n"); | |
230 | return 0; | |
231 | } | |
232 | } else { | |
233 | pr_err("resume: sdio_func is not specified\n"); | |
234 | return 0; | |
235 | } | |
236 | ||
237 | adapter = card->adapter; | |
238 | ||
239 | if (!adapter->is_suspended) { | |
240 | dev_warn(adapter->dev, "device already resumed\n"); | |
241 | return 0; | |
242 | } | |
243 | ||
244 | adapter->is_suspended = false; | |
245 | ||
246 | for (i = 0; i < adapter->priv_num; i++) | |
247 | if (adapter->priv[i]->media_connected) | |
248 | netif_carrier_on(adapter->priv[i]->netdev); | |
249 | ||
250 | /* Disable Host Sleep */ | |
251 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
600f5d90 | 252 | MWIFIEX_ASYNC_CMD); |
5e6e3a92 BZ |
253 | |
254 | return 0; | |
255 | } | |
256 | ||
257 | /* Device ID for SD8787 */ | |
258 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) | |
e3bea1c8 BZ |
259 | /* Device ID for SD8797 */ |
260 | #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) | |
5e6e3a92 BZ |
261 | |
262 | /* WLAN IDs */ | |
263 | static const struct sdio_device_id mwifiex_ids[] = { | |
264 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)}, | |
e3bea1c8 | 265 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797)}, |
5e6e3a92 BZ |
266 | {}, |
267 | }; | |
268 | ||
269 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); | |
270 | ||
271 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { | |
272 | .suspend = mwifiex_sdio_suspend, | |
273 | .resume = mwifiex_sdio_resume, | |
274 | }; | |
275 | ||
276 | static struct sdio_driver mwifiex_sdio = { | |
277 | .name = "mwifiex_sdio", | |
278 | .id_table = mwifiex_ids, | |
279 | .probe = mwifiex_sdio_probe, | |
280 | .remove = mwifiex_sdio_remove, | |
281 | .drv = { | |
282 | .owner = THIS_MODULE, | |
283 | .pm = &mwifiex_sdio_pm_ops, | |
284 | } | |
285 | }; | |
286 | ||
287 | /* | |
288 | * This function writes data into SDIO card register. | |
289 | */ | |
290 | static int | |
291 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u32 data) | |
292 | { | |
293 | struct sdio_mmc_card *card = adapter->card; | |
294 | int ret = -1; | |
295 | ||
296 | sdio_claim_host(card->func); | |
297 | sdio_writeb(card->func, (u8) data, reg, &ret); | |
298 | sdio_release_host(card->func); | |
299 | ||
300 | return ret; | |
301 | } | |
302 | ||
303 | /* | |
304 | * This function reads data from SDIO card register. | |
305 | */ | |
306 | static int | |
307 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u32 *data) | |
308 | { | |
309 | struct sdio_mmc_card *card = adapter->card; | |
310 | int ret = -1; | |
311 | u8 val; | |
312 | ||
313 | sdio_claim_host(card->func); | |
314 | val = sdio_readb(card->func, reg, &ret); | |
315 | sdio_release_host(card->func); | |
316 | ||
317 | *data = val; | |
318 | ||
319 | return ret; | |
320 | } | |
321 | ||
322 | /* | |
323 | * This function writes multiple data into SDIO card memory. | |
324 | * | |
325 | * This does not work in suspended mode. | |
326 | */ | |
327 | static int | |
328 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, | |
572e8f3e | 329 | u8 *buffer, u32 pkt_len, u32 port) |
5e6e3a92 BZ |
330 | { |
331 | struct sdio_mmc_card *card = adapter->card; | |
332 | int ret = -1; | |
333 | u8 blk_mode = | |
334 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
335 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
336 | u32 blk_cnt = | |
337 | (blk_mode == | |
338 | BLOCK_MODE) ? (pkt_len / | |
339 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; | |
340 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
341 | ||
342 | if (adapter->is_suspended) { | |
343 | dev_err(adapter->dev, | |
344 | "%s: not allowed while suspended\n", __func__); | |
345 | return -1; | |
346 | } | |
347 | ||
348 | sdio_claim_host(card->func); | |
349 | ||
350 | if (!sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size)) | |
351 | ret = 0; | |
352 | ||
353 | sdio_release_host(card->func); | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
358 | /* | |
359 | * This function reads multiple data from SDIO card memory. | |
360 | */ | |
572e8f3e AK |
361 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
362 | u32 len, u32 port, u8 claim) | |
5e6e3a92 BZ |
363 | { |
364 | struct sdio_mmc_card *card = adapter->card; | |
365 | int ret = -1; | |
366 | u8 blk_mode = | |
367 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
368 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
369 | u32 blk_cnt = | |
370 | (blk_mode == | |
371 | BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) : len; | |
372 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
373 | ||
374 | if (claim) | |
375 | sdio_claim_host(card->func); | |
376 | ||
377 | if (!sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size)) | |
378 | ret = 0; | |
379 | ||
380 | if (claim) | |
381 | sdio_release_host(card->func); | |
382 | ||
383 | return ret; | |
384 | } | |
385 | ||
386 | /* | |
387 | * This function wakes up the card. | |
388 | * | |
389 | * A host power up command is written to the card configuration | |
390 | * register to wake up the card. | |
391 | */ | |
392 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
393 | { | |
5e6e3a92 | 394 | dev_dbg(adapter->dev, "event: wakeup device...\n"); |
5e6e3a92 | 395 | |
636c4598 | 396 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
5e6e3a92 BZ |
397 | } |
398 | ||
399 | /* | |
400 | * This function is called after the card has woken up. | |
401 | * | |
402 | * The card configuration register is reset. | |
403 | */ | |
404 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
405 | { | |
5e6e3a92 | 406 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); |
5e6e3a92 | 407 | |
636c4598 | 408 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
5e6e3a92 BZ |
409 | } |
410 | ||
411 | /* | |
412 | * This function initializes the IO ports. | |
413 | * | |
414 | * The following operations are performed - | |
415 | * - Read the IO ports (0, 1 and 2) | |
416 | * - Set host interrupt Reset-To-Read to clear | |
417 | * - Set auto re-enable interrupt | |
418 | */ | |
419 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) | |
420 | { | |
421 | u32 reg; | |
422 | ||
423 | adapter->ioport = 0; | |
424 | ||
425 | /* Read the IO port */ | |
426 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) | |
427 | adapter->ioport |= (reg & 0xff); | |
428 | else | |
429 | return -1; | |
430 | ||
431 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) | |
432 | adapter->ioport |= ((reg & 0xff) << 8); | |
433 | else | |
434 | return -1; | |
435 | ||
436 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) | |
437 | adapter->ioport |= ((reg & 0xff) << 16); | |
438 | else | |
439 | return -1; | |
440 | ||
441 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); | |
442 | ||
443 | /* Set Host interrupt reset to read to clear */ | |
444 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) | |
445 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, | |
446 | reg | SDIO_INT_MASK); | |
447 | else | |
448 | return -1; | |
449 | ||
450 | /* Dnld/Upld ready set to auto reset */ | |
451 | if (!mwifiex_read_reg(adapter, CARD_MISC_CFG_REG, ®)) | |
452 | mwifiex_write_reg(adapter, CARD_MISC_CFG_REG, | |
453 | reg | AUTO_RE_ENABLE_INT); | |
454 | else | |
455 | return -1; | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | /* | |
461 | * This function sends data to the card. | |
462 | */ | |
463 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, | |
464 | u8 *payload, u32 pkt_len, u32 port) | |
465 | { | |
466 | u32 i = 0; | |
270e58e8 | 467 | int ret; |
5e6e3a92 BZ |
468 | |
469 | do { | |
572e8f3e | 470 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
5e6e3a92 BZ |
471 | if (ret) { |
472 | i++; | |
473 | dev_err(adapter->dev, "host_to_card, write iomem" | |
474 | " (%d) failed: %d\n", i, ret); | |
475 | if (mwifiex_write_reg(adapter, | |
476 | CONFIGURATION_REG, 0x04)) | |
477 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
478 | ||
479 | ret = -1; | |
480 | if (i > MAX_WRITE_IOMEM_RETRY) | |
481 | return ret; | |
482 | } | |
483 | } while (ret == -1); | |
484 | ||
485 | return ret; | |
486 | } | |
487 | ||
488 | /* | |
489 | * This function gets the read port. | |
490 | * | |
491 | * If control port bit is set in MP read bitmap, the control port | |
492 | * is returned, otherwise the current read port is returned and | |
493 | * the value is increased (provided it does not reach the maximum | |
494 | * limit, in which case it is reset to 1) | |
495 | */ | |
496 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) | |
497 | { | |
498 | struct sdio_mmc_card *card = adapter->card; | |
499 | u16 rd_bitmap = card->mp_rd_bitmap; | |
500 | ||
501 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap); | |
502 | ||
503 | if (!(rd_bitmap & (CTRL_PORT_MASK | DATA_PORT_MASK))) | |
504 | return -1; | |
505 | ||
506 | if (card->mp_rd_bitmap & CTRL_PORT_MASK) { | |
507 | card->mp_rd_bitmap &= (u16) (~CTRL_PORT_MASK); | |
508 | *port = CTRL_PORT; | |
509 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%04x\n", | |
510 | *port, card->mp_rd_bitmap); | |
511 | } else { | |
512 | if (card->mp_rd_bitmap & (1 << card->curr_rd_port)) { | |
513 | card->mp_rd_bitmap &= | |
514 | (u16) (~(1 << card->curr_rd_port)); | |
515 | *port = card->curr_rd_port; | |
516 | ||
517 | if (++card->curr_rd_port == MAX_PORT) | |
518 | card->curr_rd_port = 1; | |
519 | } else { | |
520 | return -1; | |
521 | } | |
522 | ||
523 | dev_dbg(adapter->dev, | |
524 | "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n", | |
525 | *port, rd_bitmap, card->mp_rd_bitmap); | |
526 | } | |
527 | return 0; | |
528 | } | |
529 | ||
530 | /* | |
531 | * This function gets the write port for data. | |
532 | * | |
533 | * The current write port is returned if available and the value is | |
534 | * increased (provided it does not reach the maximum limit, in which | |
535 | * case it is reset to 1) | |
536 | */ | |
537 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u8 *port) | |
538 | { | |
539 | struct sdio_mmc_card *card = adapter->card; | |
540 | u16 wr_bitmap = card->mp_wr_bitmap; | |
541 | ||
542 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap); | |
543 | ||
544 | if (!(wr_bitmap & card->mp_data_port_mask)) | |
545 | return -1; | |
546 | ||
547 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { | |
548 | card->mp_wr_bitmap &= (u16) (~(1 << card->curr_wr_port)); | |
549 | *port = card->curr_wr_port; | |
550 | if (++card->curr_wr_port == card->mp_end_port) | |
551 | card->curr_wr_port = 1; | |
552 | } else { | |
553 | adapter->data_sent = true; | |
554 | return -EBUSY; | |
555 | } | |
556 | ||
557 | if (*port == CTRL_PORT) { | |
558 | dev_err(adapter->dev, "invalid data port=%d cur port=%d" | |
559 | " mp_wr_bitmap=0x%04x -> 0x%04x\n", | |
560 | *port, card->curr_wr_port, wr_bitmap, | |
561 | card->mp_wr_bitmap); | |
562 | return -1; | |
563 | } | |
564 | ||
565 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n", | |
566 | *port, wr_bitmap, card->mp_wr_bitmap); | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
571 | /* | |
572 | * This function polls the card status. | |
573 | */ | |
574 | static int | |
575 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) | |
576 | { | |
577 | u32 tries; | |
270e58e8 | 578 | u32 cs; |
5e6e3a92 BZ |
579 | |
580 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
581 | if (mwifiex_read_reg(adapter, CARD_STATUS_REG, &cs)) | |
582 | break; | |
583 | else if ((cs & bits) == bits) | |
584 | return 0; | |
585 | ||
586 | udelay(10); | |
587 | } | |
588 | ||
589 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", | |
590 | tries); | |
591 | return -1; | |
592 | } | |
593 | ||
594 | /* | |
595 | * This function reads the firmware status. | |
596 | */ | |
597 | static int | |
598 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) | |
599 | { | |
270e58e8 | 600 | u32 fws0, fws1; |
5e6e3a92 BZ |
601 | |
602 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS0_REG, &fws0)) | |
603 | return -1; | |
604 | ||
605 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS1_REG, &fws1)) | |
606 | return -1; | |
607 | ||
608 | *dat = (u16) ((fws1 << 8) | fws0); | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
613 | /* | |
614 | * This function disables the host interrupt. | |
615 | * | |
616 | * The host interrupt mask is read, the disable bit is reset and | |
617 | * written back to the card host interrupt mask register. | |
618 | */ | |
619 | static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) | |
620 | { | |
270e58e8 | 621 | u32 host_int_mask; |
5e6e3a92 BZ |
622 | |
623 | /* Read back the host_int_mask register */ | |
624 | if (mwifiex_read_reg(adapter, HOST_INT_MASK_REG, &host_int_mask)) | |
625 | return -1; | |
626 | ||
627 | /* Update with the mask and write back to the register */ | |
628 | host_int_mask &= ~HOST_INT_DISABLE; | |
629 | ||
630 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, host_int_mask)) { | |
631 | dev_err(adapter->dev, "disable host interrupt failed\n"); | |
632 | return -1; | |
633 | } | |
634 | ||
635 | return 0; | |
636 | } | |
637 | ||
638 | /* | |
639 | * This function enables the host interrupt. | |
640 | * | |
641 | * The host interrupt enable mask is written to the card | |
642 | * host interrupt mask register. | |
643 | */ | |
644 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) | |
645 | { | |
646 | /* Simply write the mask to the register */ | |
647 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, HOST_INT_ENABLE)) { | |
648 | dev_err(adapter->dev, "enable host interrupt failed\n"); | |
649 | return -1; | |
650 | } | |
651 | return 0; | |
652 | } | |
653 | ||
654 | /* | |
655 | * This function sends a data buffer to the card. | |
656 | */ | |
657 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, | |
658 | u32 *type, u8 *buffer, | |
659 | u32 npayload, u32 ioport) | |
660 | { | |
270e58e8 | 661 | int ret; |
5e6e3a92 BZ |
662 | u32 nb; |
663 | ||
664 | if (!buffer) { | |
665 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); | |
666 | return -1; | |
667 | } | |
668 | ||
572e8f3e | 669 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
5e6e3a92 BZ |
670 | |
671 | if (ret) { | |
672 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, | |
673 | ret); | |
674 | return -1; | |
675 | } | |
676 | ||
677 | nb = le16_to_cpu(*(__le16 *) (buffer)); | |
678 | if (nb > npayload) { | |
679 | dev_err(adapter->dev, "%s: invalid packet, nb=%d, npayload=%d\n", | |
680 | __func__, nb, npayload); | |
681 | return -1; | |
682 | } | |
683 | ||
684 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); | |
685 | ||
686 | return ret; | |
687 | } | |
688 | ||
689 | /* | |
690 | * This function downloads the firmware to the card. | |
691 | * | |
692 | * Firmware is downloaded to the card in blocks. Every block download | |
693 | * is tested for CRC errors, and retried a number of times before | |
694 | * returning failure. | |
695 | */ | |
696 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
697 | struct mwifiex_fw_image *fw) | |
698 | { | |
270e58e8 | 699 | int ret; |
5e6e3a92 BZ |
700 | u8 *firmware = fw->fw_buf; |
701 | u32 firmware_len = fw->fw_len; | |
702 | u32 offset = 0; | |
703 | u32 base0, base1; | |
704 | u8 *fwbuf; | |
705 | u16 len = 0; | |
270e58e8 | 706 | u32 txlen, tx_blocks = 0, tries; |
5e6e3a92 BZ |
707 | u32 i = 0; |
708 | ||
709 | if (!firmware_len) { | |
710 | dev_err(adapter->dev, "firmware image not found!" | |
711 | " Terminating download\n"); | |
712 | return -1; | |
713 | } | |
714 | ||
715 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", | |
716 | firmware_len); | |
717 | ||
718 | /* Assume that the allocated buffer is 8-byte aligned */ | |
719 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); | |
720 | if (!fwbuf) { | |
721 | dev_err(adapter->dev, "unable to alloc buffer for firmware." | |
722 | " Terminating download\n"); | |
b53575ec | 723 | return -ENOMEM; |
5e6e3a92 BZ |
724 | } |
725 | ||
726 | /* Perform firmware data transfer */ | |
727 | do { | |
728 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY | |
729 | bits */ | |
730 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | | |
731 | DN_LD_CARD_RDY); | |
732 | if (ret) { | |
733 | dev_err(adapter->dev, "FW download with helper:" | |
734 | " poll status timeout @ %d\n", offset); | |
735 | goto done; | |
736 | } | |
737 | ||
738 | /* More data? */ | |
739 | if (offset >= firmware_len) | |
740 | break; | |
741 | ||
742 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
743 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_0, | |
744 | &base0); | |
745 | if (ret) { | |
746 | dev_err(adapter->dev, "dev BASE0 register read" | |
747 | " failed: base0=0x%04X(%d). Terminating " | |
748 | "download\n", base0, base0); | |
749 | goto done; | |
750 | } | |
751 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_1, | |
752 | &base1); | |
753 | if (ret) { | |
754 | dev_err(adapter->dev, "dev BASE1 register read" | |
755 | " failed: base1=0x%04X(%d). Terminating " | |
756 | "download\n", base1, base1); | |
757 | goto done; | |
758 | } | |
759 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); | |
760 | ||
761 | if (len) | |
762 | break; | |
763 | ||
764 | udelay(10); | |
765 | } | |
766 | ||
767 | if (!len) { | |
768 | break; | |
769 | } else if (len > MWIFIEX_UPLD_SIZE) { | |
770 | dev_err(adapter->dev, "FW download failed @ %d," | |
771 | " invalid length %d\n", offset, len); | |
772 | ret = -1; | |
773 | goto done; | |
774 | } | |
775 | ||
776 | txlen = len; | |
777 | ||
778 | if (len & BIT(0)) { | |
779 | i++; | |
780 | if (i > MAX_WRITE_IOMEM_RETRY) { | |
781 | dev_err(adapter->dev, "FW download failed @" | |
782 | " %d, over max retry count\n", offset); | |
783 | ret = -1; | |
784 | goto done; | |
785 | } | |
786 | dev_err(adapter->dev, "CRC indicated by the helper:" | |
787 | " len = 0x%04X, txlen = %d\n", len, txlen); | |
788 | len &= ~BIT(0); | |
789 | /* Setting this to 0 to resend from same offset */ | |
790 | txlen = 0; | |
791 | } else { | |
792 | i = 0; | |
793 | ||
794 | /* Set blocksize to transfer - checking for last | |
795 | block */ | |
796 | if (firmware_len - offset < txlen) | |
797 | txlen = firmware_len - offset; | |
798 | ||
799 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - | |
800 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
801 | ||
802 | /* Copy payload to buffer */ | |
803 | memmove(fwbuf, &firmware[offset], txlen); | |
804 | } | |
805 | ||
806 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * | |
807 | MWIFIEX_SDIO_BLOCK_SIZE, | |
572e8f3e | 808 | adapter->ioport); |
5e6e3a92 BZ |
809 | if (ret) { |
810 | dev_err(adapter->dev, "FW download, write iomem (%d)" | |
811 | " failed @ %d\n", i, offset); | |
812 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) | |
813 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
814 | ||
815 | ret = -1; | |
816 | goto done; | |
817 | } | |
818 | ||
819 | offset += txlen; | |
820 | } while (true); | |
821 | ||
822 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", | |
823 | offset); | |
824 | ||
825 | ret = 0; | |
826 | done: | |
827 | kfree(fwbuf); | |
828 | return ret; | |
829 | } | |
830 | ||
831 | /* | |
832 | * This function checks the firmware status in card. | |
833 | * | |
834 | * The winner interface is also determined by this function. | |
835 | */ | |
836 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, | |
d930faee | 837 | u32 poll_num) |
5e6e3a92 BZ |
838 | { |
839 | int ret = 0; | |
840 | u16 firmware_stat; | |
841 | u32 tries; | |
842 | u32 winner_status; | |
843 | ||
844 | /* Wait for firmware initialization event */ | |
845 | for (tries = 0; tries < poll_num; tries++) { | |
846 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); | |
847 | if (ret) | |
848 | continue; | |
d930faee | 849 | if (firmware_stat == FIRMWARE_READY_SDIO) { |
5e6e3a92 BZ |
850 | ret = 0; |
851 | break; | |
852 | } else { | |
853 | mdelay(100); | |
854 | ret = -1; | |
855 | } | |
856 | } | |
857 | ||
d930faee | 858 | if (ret) { |
5e6e3a92 BZ |
859 | if (mwifiex_read_reg |
860 | (adapter, CARD_FW_STATUS0_REG, &winner_status)) | |
861 | winner_status = 0; | |
862 | ||
863 | if (winner_status) | |
d930faee | 864 | adapter->winner = 0; |
5e6e3a92 | 865 | else |
d930faee | 866 | adapter->winner = 1; |
5e6e3a92 BZ |
867 | } |
868 | return ret; | |
869 | } | |
870 | ||
871 | /* | |
872 | * This function reads the interrupt status from card. | |
873 | */ | |
874 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) | |
875 | { | |
876 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 877 | u32 sdio_ireg; |
5e6e3a92 BZ |
878 | unsigned long flags; |
879 | ||
880 | if (mwifiex_read_data_sync(adapter, card->mp_regs, MAX_MP_REGS, | |
572e8f3e | 881 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, |
5e6e3a92 BZ |
882 | 0)) { |
883 | dev_err(adapter->dev, "read mp_regs failed\n"); | |
884 | return; | |
885 | } | |
886 | ||
887 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; | |
888 | if (sdio_ireg) { | |
889 | /* | |
890 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
891 | * Clear the interrupt status register | |
892 | */ | |
893 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); | |
894 | spin_lock_irqsave(&adapter->int_lock, flags); | |
895 | adapter->int_status |= sdio_ireg; | |
896 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
897 | } | |
5e6e3a92 BZ |
898 | } |
899 | ||
900 | /* | |
901 | * SDIO interrupt handler. | |
902 | * | |
903 | * This function reads the interrupt status from firmware and assigns | |
904 | * the main process in workqueue which will handle the interrupt. | |
905 | */ | |
906 | static void | |
907 | mwifiex_sdio_interrupt(struct sdio_func *func) | |
908 | { | |
909 | struct mwifiex_adapter *adapter; | |
910 | struct sdio_mmc_card *card; | |
911 | ||
912 | card = sdio_get_drvdata(func); | |
913 | if (!card || !card->adapter) { | |
914 | pr_debug("int: func=%p card=%p adapter=%p\n", | |
915 | func, card, card ? card->adapter : NULL); | |
916 | return; | |
917 | } | |
918 | adapter = card->adapter; | |
919 | ||
920 | if (adapter->surprise_removed) | |
921 | return; | |
922 | ||
923 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) | |
924 | adapter->ps_state = PS_STATE_AWAKE; | |
925 | ||
926 | mwifiex_interrupt_status(adapter); | |
927 | queue_work(adapter->workqueue, &adapter->main_work); | |
5e6e3a92 BZ |
928 | } |
929 | ||
930 | /* | |
931 | * This function decodes a received packet. | |
932 | * | |
933 | * Based on the type, the packet is treated as either a data, or | |
934 | * a command response, or an event, and the correct handler | |
935 | * function is invoked. | |
936 | */ | |
937 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, | |
938 | struct sk_buff *skb, u32 upld_typ) | |
939 | { | |
940 | u8 *cmd_buf; | |
941 | ||
942 | skb_pull(skb, INTF_HEADER_LEN); | |
943 | ||
944 | switch (upld_typ) { | |
945 | case MWIFIEX_TYPE_DATA: | |
946 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); | |
947 | mwifiex_handle_rx_packet(adapter, skb); | |
948 | break; | |
949 | ||
950 | case MWIFIEX_TYPE_CMD: | |
951 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); | |
952 | /* take care of curr_cmd = NULL case */ | |
953 | if (!adapter->curr_cmd) { | |
954 | cmd_buf = adapter->upld_buf; | |
955 | ||
956 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) | |
957 | mwifiex_process_sleep_confirm_resp(adapter, | |
958 | skb->data, skb->len); | |
959 | ||
960 | memcpy(cmd_buf, skb->data, min_t(u32, | |
961 | MWIFIEX_SIZE_OF_CMD_BUFFER, skb->len)); | |
962 | ||
963 | dev_kfree_skb_any(skb); | |
964 | } else { | |
965 | adapter->cmd_resp_received = true; | |
966 | adapter->curr_cmd->resp_skb = skb; | |
967 | } | |
968 | break; | |
969 | ||
970 | case MWIFIEX_TYPE_EVENT: | |
971 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); | |
972 | adapter->event_cause = *(u32 *) skb->data; | |
973 | ||
974 | skb_pull(skb, MWIFIEX_EVENT_HEADER_LEN); | |
975 | ||
976 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) | |
977 | memcpy(adapter->event_body, skb->data, skb->len); | |
978 | ||
979 | /* event cause has been saved to adapter->event_cause */ | |
980 | adapter->event_received = true; | |
981 | adapter->event_skb = skb; | |
982 | ||
983 | break; | |
984 | ||
985 | default: | |
986 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); | |
987 | dev_kfree_skb_any(skb); | |
988 | break; | |
989 | } | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | /* | |
995 | * This function transfers received packets from card to driver, performing | |
996 | * aggregation if required. | |
997 | * | |
998 | * For data received on control port, or if aggregation is disabled, the | |
999 | * received buffers are uploaded as separate packets. However, if aggregation | |
1000 | * is enabled and required, the buffers are copied onto an aggregation buffer, | |
1001 | * provided there is space left, processed and finally uploaded. | |
1002 | */ | |
1003 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, | |
1004 | struct sk_buff *skb, u8 port) | |
1005 | { | |
1006 | struct sdio_mmc_card *card = adapter->card; | |
1007 | s32 f_do_rx_aggr = 0; | |
1008 | s32 f_do_rx_cur = 0; | |
1009 | s32 f_aggr_cur = 0; | |
1010 | struct sk_buff *skb_deaggr; | |
270e58e8 | 1011 | u32 pind; |
5e6e3a92 BZ |
1012 | u32 pkt_len, pkt_type = 0; |
1013 | u8 *curr_ptr; | |
1014 | u32 rx_len = skb->len; | |
1015 | ||
1016 | if (port == CTRL_PORT) { | |
1017 | /* Read the command Resp without aggr */ | |
1018 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " | |
1019 | "response\n", __func__); | |
1020 | ||
1021 | f_do_rx_cur = 1; | |
1022 | goto rx_curr_single; | |
1023 | } | |
1024 | ||
1025 | if (!card->mpa_rx.enabled) { | |
1026 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", | |
1027 | __func__); | |
1028 | ||
1029 | f_do_rx_cur = 1; | |
1030 | goto rx_curr_single; | |
1031 | } | |
1032 | ||
1033 | if (card->mp_rd_bitmap & (~((u16) CTRL_PORT_MASK))) { | |
1034 | /* Some more data RX pending */ | |
1035 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); | |
1036 | ||
1037 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1038 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { | |
1039 | f_aggr_cur = 1; | |
1040 | } else { | |
1041 | /* No room in Aggr buf, do rx aggr now */ | |
1042 | f_do_rx_aggr = 1; | |
1043 | f_do_rx_cur = 1; | |
1044 | } | |
1045 | } else { | |
1046 | /* Rx aggr not in progress */ | |
1047 | f_aggr_cur = 1; | |
1048 | } | |
1049 | ||
1050 | } else { | |
1051 | /* No more data RX pending */ | |
1052 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); | |
1053 | ||
1054 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1055 | f_do_rx_aggr = 1; | |
1056 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) | |
1057 | f_aggr_cur = 1; | |
1058 | else | |
1059 | /* No room in Aggr buf, do rx aggr now */ | |
1060 | f_do_rx_cur = 1; | |
1061 | } else { | |
1062 | f_do_rx_cur = 1; | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | if (f_aggr_cur) { | |
1067 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); | |
1068 | /* Curr pkt can be aggregated */ | |
1069 | MP_RX_AGGR_SETUP(card, skb, port); | |
1070 | ||
1071 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || | |
1072 | MP_RX_AGGR_PORT_LIMIT_REACHED(card)) { | |
1073 | dev_dbg(adapter->dev, "info: %s: aggregated packet " | |
1074 | "limit reached\n", __func__); | |
1075 | /* No more pkts allowed in Aggr buf, rx it */ | |
1076 | f_do_rx_aggr = 1; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | if (f_do_rx_aggr) { | |
1081 | /* do aggr RX now */ | |
1082 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", | |
1083 | card->mpa_rx.pkt_cnt); | |
1084 | ||
1085 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, | |
1086 | card->mpa_rx.buf_len, | |
1087 | (adapter->ioport | 0x1000 | | |
1088 | (card->mpa_rx.ports << 4)) + | |
572e8f3e | 1089 | card->mpa_rx.start_port, 1)) |
17a60b48 | 1090 | goto error; |
5e6e3a92 BZ |
1091 | |
1092 | curr_ptr = card->mpa_rx.buf; | |
1093 | ||
1094 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1095 | ||
1096 | /* get curr PKT len & type */ | |
1097 | pkt_len = *(u16 *) &curr_ptr[0]; | |
1098 | pkt_type = *(u16 *) &curr_ptr[2]; | |
1099 | ||
1100 | /* copy pkt to deaggr buf */ | |
1101 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1102 | ||
1103 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= | |
1104 | card->mpa_rx.len_arr[pind])) { | |
1105 | ||
1106 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); | |
1107 | ||
1108 | skb_trim(skb_deaggr, pkt_len); | |
1109 | ||
1110 | /* Process de-aggr packet */ | |
1111 | mwifiex_decode_rx_packet(adapter, skb_deaggr, | |
1112 | pkt_type); | |
1113 | } else { | |
1114 | dev_err(adapter->dev, "wrong aggr pkt:" | |
1115 | " type=%d len=%d max_len=%d\n", | |
1116 | pkt_type, pkt_len, | |
1117 | card->mpa_rx.len_arr[pind]); | |
1118 | dev_kfree_skb_any(skb_deaggr); | |
1119 | } | |
1120 | curr_ptr += card->mpa_rx.len_arr[pind]; | |
1121 | } | |
1122 | MP_RX_AGGR_BUF_RESET(card); | |
1123 | } | |
1124 | ||
1125 | rx_curr_single: | |
1126 | if (f_do_rx_cur) { | |
1127 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", | |
1128 | port, rx_len); | |
1129 | ||
1130 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, | |
1131 | skb->data, skb->len, | |
1132 | adapter->ioport + port)) | |
17a60b48 | 1133 | goto error; |
5e6e3a92 BZ |
1134 | |
1135 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1136 | } | |
1137 | ||
1138 | return 0; | |
17a60b48 AP |
1139 | |
1140 | error: | |
1141 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1142 | /* Multiport-aggregation transfer failed - cleanup */ | |
1143 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1144 | /* copy pkt to deaggr buf */ | |
1145 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1146 | dev_kfree_skb_any(skb_deaggr); | |
1147 | } | |
1148 | MP_RX_AGGR_BUF_RESET(card); | |
1149 | } | |
1150 | ||
1151 | if (f_do_rx_cur) | |
1152 | /* Single transfer pending. Free curr buff also */ | |
1153 | dev_kfree_skb_any(skb); | |
1154 | ||
1155 | return -1; | |
5e6e3a92 BZ |
1156 | } |
1157 | ||
1158 | /* | |
1159 | * This function checks the current interrupt status. | |
1160 | * | |
1161 | * The following interrupts are checked and handled by this function - | |
1162 | * - Data sent | |
1163 | * - Command sent | |
1164 | * - Packets received | |
1165 | * | |
1166 | * Since the firmware does not generate download ready interrupt if the | |
1167 | * port updated is command port only, command sent interrupt checking | |
1168 | * should be done manually, and for every SDIO interrupt. | |
1169 | * | |
1170 | * In case of Rx packets received, the packets are uploaded from card to | |
1171 | * host and processed accordingly. | |
1172 | */ | |
1173 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) | |
1174 | { | |
1175 | struct sdio_mmc_card *card = adapter->card; | |
1176 | int ret = 0; | |
1177 | u8 sdio_ireg; | |
270e58e8 | 1178 | struct sk_buff *skb; |
5e6e3a92 BZ |
1179 | u8 port = CTRL_PORT; |
1180 | u32 len_reg_l, len_reg_u; | |
1181 | u32 rx_blocks; | |
1182 | u16 rx_len; | |
1183 | unsigned long flags; | |
1184 | ||
1185 | spin_lock_irqsave(&adapter->int_lock, flags); | |
1186 | sdio_ireg = adapter->int_status; | |
1187 | adapter->int_status = 0; | |
1188 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
1189 | ||
1190 | if (!sdio_ireg) | |
1191 | return ret; | |
1192 | ||
1193 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { | |
1194 | card->mp_wr_bitmap = ((u16) card->mp_regs[WR_BITMAP_U]) << 8; | |
1195 | card->mp_wr_bitmap |= (u16) card->mp_regs[WR_BITMAP_L]; | |
1196 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%04x\n", | |
1197 | card->mp_wr_bitmap); | |
1198 | if (adapter->data_sent && | |
1199 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { | |
1200 | dev_dbg(adapter->dev, | |
1201 | "info: <--- Tx DONE Interrupt --->\n"); | |
1202 | adapter->data_sent = false; | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | /* As firmware will not generate download ready interrupt if the port | |
1207 | updated is command port only, cmd_sent should be done for any SDIO | |
1208 | interrupt. */ | |
1209 | if (adapter->cmd_sent) { | |
1210 | /* Check if firmware has attach buffer at command port and | |
1211 | update just that in wr_bit_map. */ | |
1212 | card->mp_wr_bitmap |= | |
1213 | (u16) card->mp_regs[WR_BITMAP_L] & CTRL_PORT_MASK; | |
1214 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) | |
1215 | adapter->cmd_sent = false; | |
1216 | } | |
1217 | ||
1218 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", | |
1219 | adapter->cmd_sent, adapter->data_sent); | |
1220 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { | |
1221 | card->mp_rd_bitmap = ((u16) card->mp_regs[RD_BITMAP_U]) << 8; | |
1222 | card->mp_rd_bitmap |= (u16) card->mp_regs[RD_BITMAP_L]; | |
1223 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%04x\n", | |
1224 | card->mp_rd_bitmap); | |
1225 | ||
1226 | while (true) { | |
1227 | ret = mwifiex_get_rd_port(adapter, &port); | |
1228 | if (ret) { | |
1229 | dev_dbg(adapter->dev, | |
1230 | "info: no more rd_port available\n"); | |
1231 | break; | |
1232 | } | |
1233 | len_reg_l = RD_LEN_P0_L + (port << 1); | |
1234 | len_reg_u = RD_LEN_P0_U + (port << 1); | |
1235 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; | |
1236 | rx_len |= (u16) card->mp_regs[len_reg_l]; | |
1237 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", | |
1238 | port, rx_len); | |
1239 | rx_blocks = | |
1240 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - | |
1241 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
1242 | if (rx_len <= INTF_HEADER_LEN | |
1243 | || (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1244 | MWIFIEX_RX_DATA_BUF_SIZE) { | |
1245 | dev_err(adapter->dev, "invalid rx_len=%d\n", | |
1246 | rx_len); | |
1247 | return -1; | |
1248 | } | |
1249 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1250 | ||
1251 | skb = dev_alloc_skb(rx_len); | |
1252 | ||
1253 | if (!skb) { | |
1254 | dev_err(adapter->dev, "%s: failed to alloc skb", | |
1255 | __func__); | |
1256 | return -1; | |
1257 | } | |
1258 | ||
1259 | skb_put(skb, rx_len); | |
1260 | ||
1261 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", | |
1262 | rx_len, skb->len); | |
1263 | ||
1264 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, | |
1265 | port)) { | |
1266 | u32 cr = 0; | |
1267 | ||
1268 | dev_err(adapter->dev, "card_to_host_mpa failed:" | |
1269 | " int status=%#x\n", sdio_ireg); | |
1270 | if (mwifiex_read_reg(adapter, | |
1271 | CONFIGURATION_REG, &cr)) | |
1272 | dev_err(adapter->dev, | |
1273 | "read CFG reg failed\n"); | |
1274 | ||
1275 | dev_dbg(adapter->dev, | |
1276 | "info: CFG reg val = %d\n", cr); | |
1277 | if (mwifiex_write_reg(adapter, | |
1278 | CONFIGURATION_REG, | |
1279 | (cr | 0x04))) | |
1280 | dev_err(adapter->dev, | |
1281 | "write CFG reg failed\n"); | |
1282 | ||
1283 | dev_dbg(adapter->dev, "info: write success\n"); | |
1284 | if (mwifiex_read_reg(adapter, | |
1285 | CONFIGURATION_REG, &cr)) | |
1286 | dev_err(adapter->dev, | |
1287 | "read CFG reg failed\n"); | |
1288 | ||
1289 | dev_dbg(adapter->dev, | |
1290 | "info: CFG reg val =%x\n", cr); | |
5e6e3a92 BZ |
1291 | return -1; |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | return 0; | |
1297 | } | |
1298 | ||
1299 | /* | |
1300 | * This function aggregates transmission buffers in driver and downloads | |
1301 | * the aggregated packet to card. | |
1302 | * | |
1303 | * The individual packets are aggregated by copying into an aggregation | |
1304 | * buffer and then downloaded to the card. Previous unsent packets in the | |
1305 | * aggregation buffer are pre-copied first before new packets are added. | |
1306 | * Aggregation is done till there is space left in the aggregation buffer, | |
1307 | * or till new packets are available. | |
1308 | * | |
1309 | * The function will only download the packet to the card when aggregation | |
1310 | * stops, otherwise it will just aggregate the packet in aggregation buffer | |
1311 | * and return. | |
1312 | */ | |
1313 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, | |
1314 | u8 *payload, u32 pkt_len, u8 port, | |
1315 | u32 next_pkt_len) | |
1316 | { | |
1317 | struct sdio_mmc_card *card = adapter->card; | |
1318 | int ret = 0; | |
1319 | s32 f_send_aggr_buf = 0; | |
1320 | s32 f_send_cur_buf = 0; | |
1321 | s32 f_precopy_cur_buf = 0; | |
1322 | s32 f_postcopy_cur_buf = 0; | |
1323 | ||
1324 | if ((!card->mpa_tx.enabled) || (port == CTRL_PORT)) { | |
1325 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", | |
1326 | __func__); | |
1327 | ||
1328 | f_send_cur_buf = 1; | |
1329 | goto tx_curr_single; | |
1330 | } | |
1331 | ||
1332 | if (next_pkt_len) { | |
1333 | /* More pkt in TX queue */ | |
1334 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", | |
1335 | __func__); | |
1336 | ||
1337 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1338 | if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card) && | |
1339 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { | |
1340 | f_precopy_cur_buf = 1; | |
1341 | ||
1342 | if (!(card->mp_wr_bitmap & | |
1343 | (1 << card->curr_wr_port)) | |
1344 | || !MP_TX_AGGR_BUF_HAS_ROOM( | |
df3b124b | 1345 | card, pkt_len + next_pkt_len)) |
5e6e3a92 BZ |
1346 | f_send_aggr_buf = 1; |
1347 | } else { | |
1348 | /* No room in Aggr buf, send it */ | |
1349 | f_send_aggr_buf = 1; | |
1350 | ||
1351 | if (MP_TX_AGGR_PORT_LIMIT_REACHED(card) || | |
1352 | !(card->mp_wr_bitmap & | |
1353 | (1 << card->curr_wr_port))) | |
1354 | f_send_cur_buf = 1; | |
1355 | else | |
1356 | f_postcopy_cur_buf = 1; | |
1357 | } | |
1358 | } else { | |
1359 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) | |
1360 | && (card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1361 | f_precopy_cur_buf = 1; | |
1362 | else | |
1363 | f_send_cur_buf = 1; | |
1364 | } | |
1365 | } else { | |
1366 | /* Last pkt in TX queue */ | |
1367 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", | |
1368 | __func__); | |
1369 | ||
1370 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1371 | /* some packs in Aggr buf already */ | |
1372 | f_send_aggr_buf = 1; | |
1373 | ||
1374 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) | |
1375 | f_precopy_cur_buf = 1; | |
1376 | else | |
1377 | /* No room in Aggr buf, send it */ | |
1378 | f_send_cur_buf = 1; | |
1379 | } else { | |
1380 | f_send_cur_buf = 1; | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | if (f_precopy_cur_buf) { | |
1385 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", | |
1386 | __func__); | |
1387 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); | |
1388 | ||
1389 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || | |
1390 | MP_TX_AGGR_PORT_LIMIT_REACHED(card)) | |
1391 | /* No more pkts allowed in Aggr buf, send it */ | |
1392 | f_send_aggr_buf = 1; | |
1393 | } | |
1394 | ||
1395 | if (f_send_aggr_buf) { | |
1396 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", | |
1397 | __func__, | |
1398 | card->mpa_tx.start_port, card->mpa_tx.ports); | |
1399 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, | |
1400 | card->mpa_tx.buf_len, | |
1401 | (adapter->ioport | 0x1000 | | |
1402 | (card->mpa_tx.ports << 4)) + | |
1403 | card->mpa_tx.start_port); | |
1404 | ||
1405 | MP_TX_AGGR_BUF_RESET(card); | |
1406 | } | |
1407 | ||
1408 | tx_curr_single: | |
1409 | if (f_send_cur_buf) { | |
1410 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", | |
1411 | __func__, port); | |
1412 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, | |
1413 | adapter->ioport + port); | |
1414 | } | |
1415 | ||
1416 | if (f_postcopy_cur_buf) { | |
1417 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", | |
1418 | __func__); | |
1419 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); | |
1420 | } | |
1421 | ||
1422 | return ret; | |
1423 | } | |
1424 | ||
1425 | /* | |
1426 | * This function downloads data from driver to card. | |
1427 | * | |
1428 | * Both commands and data packets are transferred to the card by this | |
1429 | * function. | |
1430 | * | |
1431 | * This function adds the SDIO specific header to the front of the buffer | |
1432 | * before transferring. The header contains the length of the packet and | |
1433 | * the type. The firmware handles the packets based upon this set type. | |
1434 | */ | |
1435 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, | |
d930faee | 1436 | u8 type, struct sk_buff *skb, |
5e6e3a92 BZ |
1437 | struct mwifiex_tx_param *tx_param) |
1438 | { | |
1439 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 1440 | int ret; |
5e6e3a92 BZ |
1441 | u32 buf_block_len; |
1442 | u32 blk_size; | |
1443 | u8 port = CTRL_PORT; | |
d930faee AK |
1444 | u8 *payload = (u8 *)skb->data; |
1445 | u32 pkt_len = skb->len; | |
5e6e3a92 BZ |
1446 | |
1447 | /* Allocate buffer and copy payload */ | |
1448 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; | |
1449 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; | |
1450 | *(u16 *) &payload[0] = (u16) pkt_len; | |
1451 | *(u16 *) &payload[2] = type; | |
1452 | ||
1453 | /* | |
1454 | * This is SDIO specific header | |
1455 | * u16 length, | |
1456 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, | |
1457 | * MWIFIEX_TYPE_EVENT = 3) | |
1458 | */ | |
1459 | if (type == MWIFIEX_TYPE_DATA) { | |
1460 | ret = mwifiex_get_wr_port_data(adapter, &port); | |
1461 | if (ret) { | |
1462 | dev_err(adapter->dev, "%s: no wr_port available\n", | |
1463 | __func__); | |
1464 | return ret; | |
1465 | } | |
1466 | } else { | |
1467 | adapter->cmd_sent = true; | |
1468 | /* Type must be MWIFIEX_TYPE_CMD */ | |
1469 | ||
1470 | if (pkt_len <= INTF_HEADER_LEN || | |
1471 | pkt_len > MWIFIEX_UPLD_SIZE) | |
1472 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", | |
1473 | __func__, payload, pkt_len); | |
1474 | } | |
1475 | ||
1476 | /* Transfer data to card */ | |
1477 | pkt_len = buf_block_len * blk_size; | |
1478 | ||
1479 | if (tx_param) | |
1480 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
1481 | port, tx_param->next_pkt_len); | |
1482 | else | |
1483 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
1484 | port, 0); | |
1485 | ||
1486 | if (ret) { | |
1487 | if (type == MWIFIEX_TYPE_CMD) | |
1488 | adapter->cmd_sent = false; | |
1489 | if (type == MWIFIEX_TYPE_DATA) | |
1490 | adapter->data_sent = false; | |
1491 | } else { | |
1492 | if (type == MWIFIEX_TYPE_DATA) { | |
1493 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1494 | adapter->data_sent = true; | |
1495 | else | |
1496 | adapter->data_sent = false; | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | return ret; | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * This function allocates the MPA Tx and Rx buffers. | |
1505 | */ | |
1506 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, | |
1507 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) | |
1508 | { | |
1509 | struct sdio_mmc_card *card = adapter->card; | |
1510 | int ret = 0; | |
1511 | ||
1512 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); | |
1513 | if (!card->mpa_tx.buf) { | |
1514 | dev_err(adapter->dev, "could not alloc buffer for MP-A TX\n"); | |
1515 | ret = -1; | |
1516 | goto error; | |
1517 | } | |
1518 | ||
1519 | card->mpa_tx.buf_size = mpa_tx_buf_size; | |
1520 | ||
1521 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); | |
1522 | if (!card->mpa_rx.buf) { | |
1523 | dev_err(adapter->dev, "could not alloc buffer for MP-A RX\n"); | |
1524 | ret = -1; | |
1525 | goto error; | |
1526 | } | |
1527 | ||
1528 | card->mpa_rx.buf_size = mpa_rx_buf_size; | |
1529 | ||
1530 | error: | |
1531 | if (ret) { | |
1532 | kfree(card->mpa_tx.buf); | |
1533 | kfree(card->mpa_rx.buf); | |
1534 | } | |
1535 | ||
1536 | return ret; | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * This function unregisters the SDIO device. | |
1541 | * | |
1542 | * The SDIO IRQ is released, the function is disabled and driver | |
1543 | * data is set to null. | |
1544 | */ | |
1545 | static void | |
1546 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1547 | { | |
1548 | struct sdio_mmc_card *card = adapter->card; | |
1549 | ||
1550 | if (adapter->card) { | |
1551 | /* Release the SDIO IRQ */ | |
1552 | sdio_claim_host(card->func); | |
1553 | sdio_release_irq(card->func); | |
1554 | sdio_disable_func(card->func); | |
1555 | sdio_release_host(card->func); | |
1556 | sdio_set_drvdata(card->func, NULL); | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | /* | |
1561 | * This function registers the SDIO device. | |
1562 | * | |
1563 | * SDIO IRQ is claimed, block size is set and driver data is initialized. | |
1564 | */ | |
1565 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1566 | { | |
1567 | int ret = 0; | |
1568 | struct sdio_mmc_card *card = adapter->card; | |
1569 | struct sdio_func *func = card->func; | |
1570 | ||
1571 | /* save adapter pointer in card */ | |
1572 | card->adapter = adapter; | |
1573 | ||
1574 | sdio_claim_host(func); | |
1575 | ||
1576 | /* Request the SDIO IRQ */ | |
1577 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); | |
1578 | if (ret) { | |
1579 | pr_err("claim irq failed: ret=%d\n", ret); | |
1580 | goto disable_func; | |
1581 | } | |
1582 | ||
1583 | /* Set block size */ | |
1584 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); | |
1585 | if (ret) { | |
1586 | pr_err("cannot set SDIO block size\n"); | |
1587 | ret = -1; | |
1588 | goto release_irq; | |
1589 | } | |
1590 | ||
1591 | sdio_release_host(func); | |
1592 | sdio_set_drvdata(func, card); | |
1593 | ||
1594 | adapter->dev = &func->dev; | |
e3bea1c8 BZ |
1595 | |
1596 | switch (func->device) { | |
1597 | case SDIO_DEVICE_ID_MARVELL_8797: | |
1598 | strcpy(adapter->fw_name, SD8797_DEFAULT_FW_NAME); | |
1599 | break; | |
1600 | case SDIO_DEVICE_ID_MARVELL_8787: | |
1601 | default: | |
1602 | strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME); | |
1603 | break; | |
1604 | } | |
5e6e3a92 BZ |
1605 | |
1606 | return 0; | |
1607 | ||
1608 | release_irq: | |
1609 | sdio_release_irq(func); | |
1610 | disable_func: | |
1611 | sdio_disable_func(func); | |
1612 | sdio_release_host(func); | |
1613 | adapter->card = NULL; | |
1614 | ||
1615 | return -1; | |
1616 | } | |
1617 | ||
1618 | /* | |
1619 | * This function initializes the SDIO driver. | |
1620 | * | |
1621 | * The following initializations steps are followed - | |
1622 | * - Read the Host interrupt status register to acknowledge | |
1623 | * the first interrupt got from bootloader | |
1624 | * - Disable host interrupt mask register | |
1625 | * - Get SDIO port | |
5e6e3a92 BZ |
1626 | * - Initialize SDIO variables in card |
1627 | * - Allocate MP registers | |
1628 | * - Allocate MPA Tx and Rx buffers | |
1629 | */ | |
1630 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) | |
1631 | { | |
1632 | struct sdio_mmc_card *card = adapter->card; | |
1633 | int ret; | |
270e58e8 | 1634 | u32 sdio_ireg; |
5e6e3a92 BZ |
1635 | |
1636 | /* | |
1637 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got | |
1638 | * from the bootloader. If we don't do this we get a interrupt | |
1639 | * as soon as we register the irq. | |
1640 | */ | |
1641 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); | |
1642 | ||
1643 | /* Disable host interrupt mask register for SDIO */ | |
1644 | mwifiex_sdio_disable_host_int(adapter); | |
1645 | ||
1646 | /* Get SDIO ioport */ | |
1647 | mwifiex_init_sdio_ioport(adapter); | |
1648 | ||
5e6e3a92 BZ |
1649 | /* Initialize SDIO variables in card */ |
1650 | card->mp_rd_bitmap = 0; | |
1651 | card->mp_wr_bitmap = 0; | |
1652 | card->curr_rd_port = 1; | |
1653 | card->curr_wr_port = 1; | |
1654 | ||
1655 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1656 | ||
1657 | card->mpa_tx.buf_len = 0; | |
1658 | card->mpa_tx.pkt_cnt = 0; | |
1659 | card->mpa_tx.start_port = 0; | |
1660 | ||
7d7ab022 | 1661 | card->mpa_tx.enabled = 1; |
5e6e3a92 BZ |
1662 | card->mpa_tx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
1663 | ||
1664 | card->mpa_rx.buf_len = 0; | |
1665 | card->mpa_rx.pkt_cnt = 0; | |
1666 | card->mpa_rx.start_port = 0; | |
1667 | ||
7d7ab022 | 1668 | card->mpa_rx.enabled = 1; |
5e6e3a92 BZ |
1669 | card->mpa_rx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
1670 | ||
1671 | /* Allocate buffers for SDIO MP-A */ | |
1672 | card->mp_regs = kzalloc(MAX_MP_REGS, GFP_KERNEL); | |
1673 | if (!card->mp_regs) { | |
1674 | dev_err(adapter->dev, "failed to alloc mp_regs\n"); | |
b53575ec | 1675 | return -ENOMEM; |
5e6e3a92 BZ |
1676 | } |
1677 | ||
1678 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, | |
1679 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, | |
1680 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); | |
1681 | if (ret) { | |
1682 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); | |
1683 | kfree(card->mp_regs); | |
1684 | return -1; | |
1685 | } | |
1686 | ||
1687 | return ret; | |
1688 | } | |
1689 | ||
1690 | /* | |
1691 | * This function resets the MPA Tx and Rx buffers. | |
1692 | */ | |
1693 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) | |
1694 | { | |
1695 | struct sdio_mmc_card *card = adapter->card; | |
1696 | ||
1697 | MP_TX_AGGR_BUF_RESET(card); | |
1698 | MP_RX_AGGR_BUF_RESET(card); | |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * This function cleans up the allocated card buffers. | |
1703 | * | |
1704 | * The following are freed by this function - | |
1705 | * - MP registers | |
1706 | * - MPA Tx buffer | |
1707 | * - MPA Rx buffer | |
1708 | */ | |
1709 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) | |
1710 | { | |
1711 | struct sdio_mmc_card *card = adapter->card; | |
1712 | ||
1713 | kfree(card->mp_regs); | |
1714 | kfree(card->mpa_tx.buf); | |
1715 | kfree(card->mpa_rx.buf); | |
1716 | } | |
1717 | ||
1718 | /* | |
1719 | * This function updates the MP end port in card. | |
1720 | */ | |
1721 | static void | |
1722 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) | |
1723 | { | |
1724 | struct sdio_mmc_card *card = adapter->card; | |
1725 | int i; | |
1726 | ||
1727 | card->mp_end_port = port; | |
1728 | ||
1729 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1730 | ||
1731 | for (i = 1; i <= MAX_PORT - card->mp_end_port; i++) | |
1732 | card->mp_data_port_mask &= ~(1 << (MAX_PORT - i)); | |
1733 | ||
1734 | card->curr_wr_port = 1; | |
1735 | ||
1736 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", | |
1737 | port, card->mp_data_port_mask); | |
1738 | } | |
1739 | ||
1740 | static struct mwifiex_if_ops sdio_ops = { | |
1741 | .init_if = mwifiex_init_sdio, | |
1742 | .cleanup_if = mwifiex_cleanup_sdio, | |
1743 | .check_fw_status = mwifiex_check_fw_status, | |
1744 | .prog_fw = mwifiex_prog_fw_w_helper, | |
1745 | .register_dev = mwifiex_register_dev, | |
1746 | .unregister_dev = mwifiex_unregister_dev, | |
1747 | .enable_int = mwifiex_sdio_enable_host_int, | |
1748 | .process_int_status = mwifiex_process_int_status, | |
1749 | .host_to_card = mwifiex_sdio_host_to_card, | |
1750 | .wakeup = mwifiex_pm_wakeup_card, | |
1751 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1752 | ||
1753 | /* SDIO specific */ | |
1754 | .update_mp_end_port = mwifiex_update_mp_end_port, | |
1755 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, | |
d930faee AK |
1756 | .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, |
1757 | .event_complete = mwifiex_sdio_event_complete, | |
5e6e3a92 BZ |
1758 | }; |
1759 | ||
1760 | /* | |
1761 | * This function initializes the SDIO driver. | |
1762 | * | |
1763 | * This initiates the semaphore and registers the device with | |
1764 | * SDIO bus. | |
1765 | */ | |
1766 | static int | |
1767 | mwifiex_sdio_init_module(void) | |
1768 | { | |
5e6e3a92 BZ |
1769 | sema_init(&add_remove_card_sem, 1); |
1770 | ||
287546df AK |
1771 | /* Clear the flag in case user removes the card. */ |
1772 | user_rmmod = 0; | |
1773 | ||
636c4598 | 1774 | return sdio_register_driver(&mwifiex_sdio); |
5e6e3a92 BZ |
1775 | } |
1776 | ||
1777 | /* | |
1778 | * This function cleans up the SDIO driver. | |
1779 | * | |
1780 | * The following major steps are followed for cleanup - | |
1781 | * - Resume the device if its suspended | |
1782 | * - Disconnect the device if connected | |
1783 | * - Shutdown the firmware | |
1784 | * - Unregister the device from SDIO bus. | |
1785 | */ | |
1786 | static void | |
1787 | mwifiex_sdio_cleanup_module(void) | |
1788 | { | |
287546df AK |
1789 | if (!down_interruptible(&add_remove_card_sem)) |
1790 | up(&add_remove_card_sem); | |
5e6e3a92 | 1791 | |
287546df AK |
1792 | /* Set the flag as user is removing this module. */ |
1793 | user_rmmod = 1; | |
5e6e3a92 | 1794 | |
5e6e3a92 BZ |
1795 | sdio_unregister_driver(&mwifiex_sdio); |
1796 | } | |
1797 | ||
1798 | module_init(mwifiex_sdio_init_module); | |
1799 | module_exit(mwifiex_sdio_cleanup_module); | |
1800 | ||
1801 | MODULE_AUTHOR("Marvell International Ltd."); | |
1802 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); | |
1803 | MODULE_VERSION(SDIO_VERSION); | |
1804 | MODULE_LICENSE("GPL v2"); | |
e3bea1c8 BZ |
1805 | MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); |
1806 | MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); |