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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 | ||
53 | /* | |
54 | * SDIO probe. | |
55 | * | |
56 | * This function probes an mwifiex device and registers it. It allocates | |
57 | * the card structure, enables SDIO function number and initiates the | |
58 | * device registration and initialization procedure by adding a logical | |
59 | * interface. | |
60 | */ | |
61 | static int | |
62 | mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) | |
63 | { | |
270e58e8 | 64 | int ret; |
5e6e3a92 BZ |
65 | struct sdio_mmc_card *card = NULL; |
66 | ||
67 | pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", | |
5dbd326c | 68 | func->vendor, func->device, func->class, func->num); |
5e6e3a92 BZ |
69 | |
70 | card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); | |
e404decb | 71 | if (!card) |
5e6e3a92 | 72 | return -ENOMEM; |
5e6e3a92 BZ |
73 | |
74 | card->func = func; | |
75 | ||
76 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; | |
77 | ||
05889f82 AK |
78 | if (id->driver_data) { |
79 | struct mwifiex_sdio_device *data = (void *)id->driver_data; | |
80 | ||
81 | card->firmware = data->firmware; | |
82 | card->reg = data->reg; | |
83 | card->max_ports = data->max_ports; | |
84 | card->mp_agg_pkt_limit = data->mp_agg_pkt_limit; | |
b60186f8 YAP |
85 | card->supports_sdio_new_mode = data->supports_sdio_new_mode; |
86 | card->has_control_mask = data->has_control_mask; | |
05889f82 AK |
87 | } |
88 | ||
5e6e3a92 BZ |
89 | sdio_claim_host(func); |
90 | ret = sdio_enable_func(func); | |
91 | sdio_release_host(func); | |
92 | ||
93 | if (ret) { | |
94 | pr_err("%s: failed to enable function\n", __func__); | |
b53575ec | 95 | kfree(card); |
5e6e3a92 BZ |
96 | return -EIO; |
97 | } | |
98 | ||
d930faee AK |
99 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops, |
100 | MWIFIEX_SDIO)) { | |
5e6e3a92 BZ |
101 | pr_err("%s: add card failed\n", __func__); |
102 | kfree(card); | |
103 | sdio_claim_host(func); | |
104 | ret = sdio_disable_func(func); | |
105 | sdio_release_host(func); | |
106 | ret = -1; | |
107 | } | |
108 | ||
109 | return ret; | |
110 | } | |
111 | ||
2cdf359a AK |
112 | /* |
113 | * SDIO resume. | |
114 | * | |
115 | * Kernel needs to suspend all functions separately. Therefore all | |
116 | * registered functions must have drivers with suspend and resume | |
117 | * methods. Failing that the kernel simply removes the whole card. | |
118 | * | |
119 | * If already not resumed, this function turns on the traffic and | |
120 | * sends a host sleep cancel request to the firmware. | |
121 | */ | |
122 | static int mwifiex_sdio_resume(struct device *dev) | |
123 | { | |
124 | struct sdio_func *func = dev_to_sdio_func(dev); | |
125 | struct sdio_mmc_card *card; | |
126 | struct mwifiex_adapter *adapter; | |
127 | mmc_pm_flag_t pm_flag = 0; | |
128 | ||
129 | if (func) { | |
130 | pm_flag = sdio_get_host_pm_caps(func); | |
131 | card = sdio_get_drvdata(func); | |
132 | if (!card || !card->adapter) { | |
133 | pr_err("resume: invalid card or adapter\n"); | |
134 | return 0; | |
135 | } | |
136 | } else { | |
137 | pr_err("resume: sdio_func is not specified\n"); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | adapter = card->adapter; | |
142 | ||
143 | if (!adapter->is_suspended) { | |
144 | dev_warn(adapter->dev, "device already resumed\n"); | |
145 | return 0; | |
146 | } | |
147 | ||
148 | adapter->is_suspended = false; | |
149 | ||
150 | /* Disable Host Sleep */ | |
151 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
152 | MWIFIEX_ASYNC_CMD); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
5e6e3a92 BZ |
157 | /* |
158 | * SDIO remove. | |
159 | * | |
160 | * This function removes the interface and frees up the card structure. | |
161 | */ | |
162 | static void | |
163 | mwifiex_sdio_remove(struct sdio_func *func) | |
164 | { | |
165 | struct sdio_mmc_card *card; | |
287546df | 166 | struct mwifiex_adapter *adapter; |
5dbd326c | 167 | struct mwifiex_private *priv; |
287546df | 168 | int i; |
5e6e3a92 BZ |
169 | |
170 | pr_debug("info: SDIO func num=%d\n", func->num); | |
171 | ||
287546df AK |
172 | card = sdio_get_drvdata(func); |
173 | if (!card) | |
174 | return; | |
175 | ||
176 | adapter = card->adapter; | |
177 | if (!adapter || !adapter->priv_num) | |
178 | return; | |
179 | ||
59a4cc25 AK |
180 | /* In case driver is removed when asynchronous FW load is in progress */ |
181 | wait_for_completion(&adapter->fw_load); | |
182 | ||
287546df AK |
183 | if (user_rmmod) { |
184 | if (adapter->is_suspended) | |
185 | mwifiex_sdio_resume(adapter->dev); | |
186 | ||
187 | for (i = 0; i < adapter->priv_num; i++) | |
188 | if ((GET_BSS_ROLE(adapter->priv[i]) == | |
189 | MWIFIEX_BSS_ROLE_STA) && | |
5dbd326c | 190 | adapter->priv[i]->media_connected) |
287546df AK |
191 | mwifiex_deauthenticate(adapter->priv[i], NULL); |
192 | ||
5dbd326c YAP |
193 | priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); |
194 | mwifiex_disable_auto_ds(priv); | |
195 | mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); | |
5e6e3a92 | 196 | } |
287546df AK |
197 | |
198 | mwifiex_remove_card(card->adapter, &add_remove_card_sem); | |
199 | kfree(card); | |
5e6e3a92 BZ |
200 | } |
201 | ||
202 | /* | |
203 | * SDIO suspend. | |
204 | * | |
205 | * Kernel needs to suspend all functions separately. Therefore all | |
206 | * registered functions must have drivers with suspend and resume | |
207 | * methods. Failing that the kernel simply removes the whole card. | |
208 | * | |
209 | * If already not suspended, this function allocates and sends a host | |
210 | * sleep activate request to the firmware and turns off the traffic. | |
211 | */ | |
212 | static int mwifiex_sdio_suspend(struct device *dev) | |
213 | { | |
214 | struct sdio_func *func = dev_to_sdio_func(dev); | |
215 | struct sdio_mmc_card *card; | |
270e58e8 | 216 | struct mwifiex_adapter *adapter; |
5e6e3a92 | 217 | mmc_pm_flag_t pm_flag = 0; |
5e6e3a92 BZ |
218 | int ret = 0; |
219 | ||
220 | if (func) { | |
221 | pm_flag = sdio_get_host_pm_caps(func); | |
222 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", | |
5dbd326c | 223 | sdio_func_id(func), pm_flag); |
5e6e3a92 BZ |
224 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { |
225 | pr_err("%s: cannot remain alive while host is" | |
226 | " suspended\n", sdio_func_id(func)); | |
227 | return -ENOSYS; | |
228 | } | |
229 | ||
230 | card = sdio_get_drvdata(func); | |
231 | if (!card || !card->adapter) { | |
232 | pr_err("suspend: invalid card or adapter\n"); | |
233 | return 0; | |
234 | } | |
235 | } else { | |
236 | pr_err("suspend: sdio_func is not specified\n"); | |
237 | return 0; | |
238 | } | |
239 | ||
240 | adapter = card->adapter; | |
241 | ||
242 | /* Enable the Host Sleep */ | |
dd321acd BZ |
243 | if (!mwifiex_enable_hs(adapter)) { |
244 | dev_err(adapter->dev, "cmd: failed to suspend\n"); | |
245 | return -EFAULT; | |
5e6e3a92 BZ |
246 | } |
247 | ||
dd321acd BZ |
248 | dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n"); |
249 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
250 | ||
5e6e3a92 BZ |
251 | /* Indicate device suspended */ |
252 | adapter->is_suspended = true; | |
253 | ||
5e6e3a92 BZ |
254 | return ret; |
255 | } | |
256 | ||
98e6b9df W |
257 | /* Device ID for SD8786 */ |
258 | #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) | |
5e6e3a92 BZ |
259 | /* Device ID for SD8787 */ |
260 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) | |
e3bea1c8 BZ |
261 | /* Device ID for SD8797 */ |
262 | #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) | |
b60186f8 YAP |
263 | /* Device ID for SD8897 */ |
264 | #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) | |
5e6e3a92 BZ |
265 | |
266 | /* WLAN IDs */ | |
267 | static const struct sdio_device_id mwifiex_ids[] = { | |
05889f82 AK |
268 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), |
269 | .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, | |
270 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), | |
271 | .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, | |
272 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), | |
273 | .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, | |
b60186f8 YAP |
274 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), |
275 | .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, | |
5e6e3a92 BZ |
276 | {}, |
277 | }; | |
278 | ||
279 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); | |
280 | ||
281 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { | |
282 | .suspend = mwifiex_sdio_suspend, | |
283 | .resume = mwifiex_sdio_resume, | |
284 | }; | |
285 | ||
286 | static struct sdio_driver mwifiex_sdio = { | |
287 | .name = "mwifiex_sdio", | |
288 | .id_table = mwifiex_ids, | |
289 | .probe = mwifiex_sdio_probe, | |
290 | .remove = mwifiex_sdio_remove, | |
291 | .drv = { | |
292 | .owner = THIS_MODULE, | |
293 | .pm = &mwifiex_sdio_pm_ops, | |
294 | } | |
295 | }; | |
296 | ||
232fde06 DD |
297 | /* Write data into SDIO card register. Caller claims SDIO device. */ |
298 | static int | |
299 | mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) | |
300 | { | |
301 | int ret = -1; | |
302 | sdio_writeb(func, data, reg, &ret); | |
303 | return ret; | |
304 | } | |
305 | ||
5e6e3a92 BZ |
306 | /* |
307 | * This function writes data into SDIO card register. | |
308 | */ | |
309 | static int | |
ab93d4ff | 310 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) |
5e6e3a92 BZ |
311 | { |
312 | struct sdio_mmc_card *card = adapter->card; | |
232fde06 | 313 | int ret; |
5e6e3a92 BZ |
314 | |
315 | sdio_claim_host(card->func); | |
232fde06 | 316 | ret = mwifiex_write_reg_locked(card->func, reg, data); |
5e6e3a92 BZ |
317 | sdio_release_host(card->func); |
318 | ||
319 | return ret; | |
320 | } | |
321 | ||
322 | /* | |
323 | * This function reads data from SDIO card register. | |
324 | */ | |
325 | static int | |
ab93d4ff | 326 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) |
5e6e3a92 BZ |
327 | { |
328 | struct sdio_mmc_card *card = adapter->card; | |
329 | int ret = -1; | |
330 | u8 val; | |
331 | ||
332 | sdio_claim_host(card->func); | |
333 | val = sdio_readb(card->func, reg, &ret); | |
334 | sdio_release_host(card->func); | |
335 | ||
336 | *data = val; | |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
341 | /* | |
342 | * This function writes multiple data into SDIO card memory. | |
343 | * | |
344 | * This does not work in suspended mode. | |
345 | */ | |
346 | static int | |
347 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, | |
572e8f3e | 348 | u8 *buffer, u32 pkt_len, u32 port) |
5e6e3a92 BZ |
349 | { |
350 | struct sdio_mmc_card *card = adapter->card; | |
5b2e2ecc | 351 | int ret; |
5e6e3a92 BZ |
352 | u8 blk_mode = |
353 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
354 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
355 | u32 blk_cnt = | |
356 | (blk_mode == | |
357 | BLOCK_MODE) ? (pkt_len / | |
358 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; | |
359 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
360 | ||
361 | if (adapter->is_suspended) { | |
362 | dev_err(adapter->dev, | |
363 | "%s: not allowed while suspended\n", __func__); | |
364 | return -1; | |
365 | } | |
366 | ||
367 | sdio_claim_host(card->func); | |
368 | ||
5b2e2ecc | 369 | ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); |
5e6e3a92 BZ |
370 | |
371 | sdio_release_host(card->func); | |
372 | ||
373 | return ret; | |
374 | } | |
375 | ||
376 | /* | |
377 | * This function reads multiple data from SDIO card memory. | |
378 | */ | |
572e8f3e AK |
379 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
380 | u32 len, u32 port, u8 claim) | |
5e6e3a92 BZ |
381 | { |
382 | struct sdio_mmc_card *card = adapter->card; | |
5b2e2ecc | 383 | int ret; |
5dbd326c YAP |
384 | u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE |
385 | : BLOCK_MODE; | |
5e6e3a92 | 386 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
5dbd326c YAP |
387 | u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) |
388 | : len; | |
5e6e3a92 BZ |
389 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
390 | ||
391 | if (claim) | |
392 | sdio_claim_host(card->func); | |
393 | ||
5b2e2ecc | 394 | ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); |
5e6e3a92 BZ |
395 | |
396 | if (claim) | |
397 | sdio_release_host(card->func); | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | /* | |
403 | * This function wakes up the card. | |
404 | * | |
405 | * A host power up command is written to the card configuration | |
406 | * register to wake up the card. | |
407 | */ | |
408 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
409 | { | |
5e6e3a92 | 410 | dev_dbg(adapter->dev, "event: wakeup device...\n"); |
5e6e3a92 | 411 | |
636c4598 | 412 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
5e6e3a92 BZ |
413 | } |
414 | ||
415 | /* | |
416 | * This function is called after the card has woken up. | |
417 | * | |
418 | * The card configuration register is reset. | |
419 | */ | |
420 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
421 | { | |
5e6e3a92 | 422 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); |
5e6e3a92 | 423 | |
636c4598 | 424 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
5e6e3a92 BZ |
425 | } |
426 | ||
427 | /* | |
b60186f8 YAP |
428 | * This function is used to initialize IO ports for the |
429 | * chipsets supporting SDIO new mode eg SD8897. | |
430 | */ | |
431 | static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) | |
432 | { | |
433 | u8 reg; | |
434 | ||
435 | adapter->ioport = MEM_PORT; | |
436 | ||
437 | /* enable sdio new mode */ | |
438 | if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, ®)) | |
439 | return -1; | |
440 | if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG, | |
441 | reg | CMD53_NEW_MODE)) | |
442 | return -1; | |
443 | ||
444 | /* Configure cmd port and enable reading rx length from the register */ | |
445 | if (mwifiex_read_reg(adapter, CMD_CONFIG_0, ®)) | |
446 | return -1; | |
447 | if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN)) | |
448 | return -1; | |
449 | ||
450 | /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is | |
451 | * completed | |
452 | */ | |
453 | if (mwifiex_read_reg(adapter, CMD_CONFIG_1, ®)) | |
454 | return -1; | |
455 | if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN)) | |
456 | return -1; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | /* This function initializes the IO ports. | |
5e6e3a92 BZ |
462 | * |
463 | * The following operations are performed - | |
464 | * - Read the IO ports (0, 1 and 2) | |
465 | * - Set host interrupt Reset-To-Read to clear | |
466 | * - Set auto re-enable interrupt | |
467 | */ | |
468 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) | |
469 | { | |
ab93d4ff | 470 | u8 reg; |
05889f82 | 471 | struct sdio_mmc_card *card = adapter->card; |
5e6e3a92 BZ |
472 | |
473 | adapter->ioport = 0; | |
474 | ||
b60186f8 YAP |
475 | if (card->supports_sdio_new_mode) { |
476 | if (mwifiex_init_sdio_new_mode(adapter)) | |
477 | return -1; | |
478 | goto cont; | |
479 | } | |
480 | ||
5e6e3a92 BZ |
481 | /* Read the IO port */ |
482 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) | |
483 | adapter->ioport |= (reg & 0xff); | |
484 | else | |
485 | return -1; | |
486 | ||
487 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) | |
488 | adapter->ioport |= ((reg & 0xff) << 8); | |
489 | else | |
490 | return -1; | |
491 | ||
492 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) | |
493 | adapter->ioport |= ((reg & 0xff) << 16); | |
494 | else | |
495 | return -1; | |
b60186f8 | 496 | cont: |
5e6e3a92 BZ |
497 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); |
498 | ||
499 | /* Set Host interrupt reset to read to clear */ | |
500 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) | |
501 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, | |
05889f82 | 502 | reg | card->reg->sdio_int_mask); |
5e6e3a92 BZ |
503 | else |
504 | return -1; | |
505 | ||
506 | /* Dnld/Upld ready set to auto reset */ | |
05889f82 AK |
507 | if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) |
508 | mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, | |
5e6e3a92 BZ |
509 | reg | AUTO_RE_ENABLE_INT); |
510 | else | |
511 | return -1; | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
516 | /* | |
517 | * This function sends data to the card. | |
518 | */ | |
519 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, | |
520 | u8 *payload, u32 pkt_len, u32 port) | |
521 | { | |
522 | u32 i = 0; | |
270e58e8 | 523 | int ret; |
5e6e3a92 BZ |
524 | |
525 | do { | |
572e8f3e | 526 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
5e6e3a92 BZ |
527 | if (ret) { |
528 | i++; | |
529 | dev_err(adapter->dev, "host_to_card, write iomem" | |
530 | " (%d) failed: %d\n", i, ret); | |
5dbd326c | 531 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
5e6e3a92 BZ |
532 | dev_err(adapter->dev, "write CFG reg failed\n"); |
533 | ||
534 | ret = -1; | |
535 | if (i > MAX_WRITE_IOMEM_RETRY) | |
536 | return ret; | |
537 | } | |
538 | } while (ret == -1); | |
539 | ||
540 | return ret; | |
541 | } | |
542 | ||
543 | /* | |
544 | * This function gets the read port. | |
545 | * | |
546 | * If control port bit is set in MP read bitmap, the control port | |
547 | * is returned, otherwise the current read port is returned and | |
548 | * the value is increased (provided it does not reach the maximum | |
549 | * limit, in which case it is reset to 1) | |
550 | */ | |
551 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) | |
552 | { | |
553 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 554 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5ac253d5 | 555 | u32 rd_bitmap = card->mp_rd_bitmap; |
5e6e3a92 | 556 | |
5ac253d5 | 557 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); |
5e6e3a92 | 558 | |
b60186f8 YAP |
559 | if (card->supports_sdio_new_mode) { |
560 | if (!(rd_bitmap & reg->data_port_mask)) | |
561 | return -1; | |
562 | } else { | |
563 | if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) | |
564 | return -1; | |
565 | } | |
5e6e3a92 | 566 | |
b60186f8 YAP |
567 | if ((card->has_control_mask) && |
568 | (card->mp_rd_bitmap & CTRL_PORT_MASK)) { | |
5ac253d5 | 569 | card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); |
5e6e3a92 | 570 | *port = CTRL_PORT; |
5ac253d5 | 571 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n", |
5dbd326c | 572 | *port, card->mp_rd_bitmap); |
e6a52030 | 573 | return 0; |
5e6e3a92 | 574 | } |
e6a52030 AK |
575 | |
576 | if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) | |
577 | return -1; | |
578 | ||
579 | /* We are now handling the SDIO data ports */ | |
580 | card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); | |
581 | *port = card->curr_rd_port; | |
582 | ||
583 | if (++card->curr_rd_port == card->max_ports) | |
584 | card->curr_rd_port = reg->start_rd_port; | |
585 | ||
586 | dev_dbg(adapter->dev, | |
587 | "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", | |
588 | *port, rd_bitmap, card->mp_rd_bitmap); | |
589 | ||
5e6e3a92 BZ |
590 | return 0; |
591 | } | |
592 | ||
593 | /* | |
594 | * This function gets the write port for data. | |
595 | * | |
596 | * The current write port is returned if available and the value is | |
597 | * increased (provided it does not reach the maximum limit, in which | |
598 | * case it is reset to 1) | |
599 | */ | |
0fc0d43b | 600 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) |
5e6e3a92 BZ |
601 | { |
602 | struct sdio_mmc_card *card = adapter->card; | |
b60186f8 | 603 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5ac253d5 | 604 | u32 wr_bitmap = card->mp_wr_bitmap; |
5e6e3a92 | 605 | |
5ac253d5 | 606 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); |
5e6e3a92 | 607 | |
b60186f8 YAP |
608 | if (card->supports_sdio_new_mode && |
609 | !(wr_bitmap & reg->data_port_mask)) { | |
610 | adapter->data_sent = true; | |
611 | return -EBUSY; | |
612 | } else if (!card->supports_sdio_new_mode && | |
613 | !(wr_bitmap & card->mp_data_port_mask)) { | |
5e6e3a92 | 614 | return -1; |
b60186f8 | 615 | } |
5e6e3a92 BZ |
616 | |
617 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { | |
5ac253d5 | 618 | card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); |
5e6e3a92 | 619 | *port = card->curr_wr_port; |
b60186f8 YAP |
620 | if (((card->supports_sdio_new_mode) && |
621 | (++card->curr_wr_port == card->max_ports)) || | |
622 | ((!card->supports_sdio_new_mode) && | |
623 | (++card->curr_wr_port == card->mp_end_port))) | |
624 | card->curr_wr_port = reg->start_wr_port; | |
5e6e3a92 BZ |
625 | } else { |
626 | adapter->data_sent = true; | |
627 | return -EBUSY; | |
628 | } | |
629 | ||
b60186f8 | 630 | if ((card->has_control_mask) && (*port == CTRL_PORT)) { |
5ac253d5 AK |
631 | dev_err(adapter->dev, |
632 | "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", | |
5dbd326c YAP |
633 | *port, card->curr_wr_port, wr_bitmap, |
634 | card->mp_wr_bitmap); | |
5e6e3a92 BZ |
635 | return -1; |
636 | } | |
637 | ||
5ac253d5 | 638 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", |
5dbd326c | 639 | *port, wr_bitmap, card->mp_wr_bitmap); |
5e6e3a92 BZ |
640 | |
641 | return 0; | |
642 | } | |
643 | ||
644 | /* | |
645 | * This function polls the card status. | |
646 | */ | |
647 | static int | |
648 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) | |
649 | { | |
05889f82 | 650 | struct sdio_mmc_card *card = adapter->card; |
5e6e3a92 | 651 | u32 tries; |
ab93d4ff | 652 | u8 cs; |
5e6e3a92 BZ |
653 | |
654 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
05889f82 | 655 | if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) |
5e6e3a92 BZ |
656 | break; |
657 | else if ((cs & bits) == bits) | |
658 | return 0; | |
659 | ||
e7891ba2 | 660 | usleep_range(10, 20); |
5e6e3a92 BZ |
661 | } |
662 | ||
5dbd326c YAP |
663 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries); |
664 | ||
5e6e3a92 BZ |
665 | return -1; |
666 | } | |
667 | ||
668 | /* | |
669 | * This function reads the firmware status. | |
670 | */ | |
671 | static int | |
672 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) | |
673 | { | |
05889f82 AK |
674 | struct sdio_mmc_card *card = adapter->card; |
675 | const struct mwifiex_sdio_card_reg *reg = card->reg; | |
ab93d4ff | 676 | u8 fws0, fws1; |
5e6e3a92 | 677 | |
05889f82 | 678 | if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) |
5e6e3a92 BZ |
679 | return -1; |
680 | ||
05889f82 | 681 | if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) |
5e6e3a92 BZ |
682 | return -1; |
683 | ||
684 | *dat = (u16) ((fws1 << 8) | fws0); | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | /* | |
690 | * This function disables the host interrupt. | |
691 | * | |
692 | * The host interrupt mask is read, the disable bit is reset and | |
693 | * written back to the card host interrupt mask register. | |
694 | */ | |
232fde06 | 695 | static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) |
5e6e3a92 | 696 | { |
232fde06 DD |
697 | struct sdio_mmc_card *card = adapter->card; |
698 | struct sdio_func *func = card->func; | |
5e6e3a92 | 699 | |
232fde06 DD |
700 | sdio_claim_host(func); |
701 | mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0); | |
702 | sdio_release_irq(func); | |
703 | sdio_release_host(func); | |
5e6e3a92 BZ |
704 | } |
705 | ||
2cdf359a AK |
706 | /* |
707 | * This function reads the interrupt status from card. | |
708 | */ | |
709 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) | |
710 | { | |
711 | struct sdio_mmc_card *card = adapter->card; | |
712 | u8 sdio_ireg; | |
713 | unsigned long flags; | |
714 | ||
715 | if (mwifiex_read_data_sync(adapter, card->mp_regs, | |
716 | card->reg->max_mp_regs, | |
717 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { | |
718 | dev_err(adapter->dev, "read mp_regs failed\n"); | |
719 | return; | |
720 | } | |
721 | ||
722 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; | |
723 | if (sdio_ireg) { | |
724 | /* | |
725 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
726 | * For SDIO new mode CMD port interrupts | |
727 | * DN_LD_CMD_PORT_HOST_INT_STATUS and/or | |
728 | * UP_LD_CMD_PORT_HOST_INT_STATUS | |
729 | * Clear the interrupt status register | |
730 | */ | |
731 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); | |
732 | spin_lock_irqsave(&adapter->int_lock, flags); | |
733 | adapter->int_status |= sdio_ireg; | |
734 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
735 | } | |
736 | } | |
737 | ||
738 | /* | |
739 | * SDIO interrupt handler. | |
740 | * | |
741 | * This function reads the interrupt status from firmware and handles | |
742 | * the interrupt in current thread (ksdioirqd) right away. | |
743 | */ | |
744 | static void | |
745 | mwifiex_sdio_interrupt(struct sdio_func *func) | |
746 | { | |
747 | struct mwifiex_adapter *adapter; | |
748 | struct sdio_mmc_card *card; | |
749 | ||
750 | card = sdio_get_drvdata(func); | |
751 | if (!card || !card->adapter) { | |
752 | pr_debug("int: func=%p card=%p adapter=%p\n", | |
753 | func, card, card ? card->adapter : NULL); | |
754 | return; | |
755 | } | |
756 | adapter = card->adapter; | |
757 | ||
758 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) | |
759 | adapter->ps_state = PS_STATE_AWAKE; | |
760 | ||
761 | mwifiex_interrupt_status(adapter); | |
762 | mwifiex_main_process(adapter); | |
763 | } | |
764 | ||
5e6e3a92 BZ |
765 | /* |
766 | * This function enables the host interrupt. | |
767 | * | |
768 | * The host interrupt enable mask is written to the card | |
769 | * host interrupt mask register. | |
770 | */ | |
771 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) | |
772 | { | |
05889f82 | 773 | struct sdio_mmc_card *card = adapter->card; |
232fde06 DD |
774 | struct sdio_func *func = card->func; |
775 | int ret; | |
776 | ||
777 | sdio_claim_host(func); | |
778 | ||
779 | /* Request the SDIO IRQ */ | |
780 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); | |
781 | if (ret) { | |
782 | dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret); | |
783 | goto out; | |
784 | } | |
05889f82 | 785 | |
5e6e3a92 | 786 | /* Simply write the mask to the register */ |
232fde06 DD |
787 | ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, |
788 | card->reg->host_int_enable); | |
789 | if (ret) { | |
5e6e3a92 | 790 | dev_err(adapter->dev, "enable host interrupt failed\n"); |
232fde06 | 791 | sdio_release_irq(func); |
5e6e3a92 | 792 | } |
232fde06 DD |
793 | |
794 | out: | |
795 | sdio_release_host(func); | |
796 | return ret; | |
5e6e3a92 BZ |
797 | } |
798 | ||
799 | /* | |
800 | * This function sends a data buffer to the card. | |
801 | */ | |
802 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, | |
803 | u32 *type, u8 *buffer, | |
804 | u32 npayload, u32 ioport) | |
805 | { | |
270e58e8 | 806 | int ret; |
5e6e3a92 BZ |
807 | u32 nb; |
808 | ||
809 | if (!buffer) { | |
810 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); | |
811 | return -1; | |
812 | } | |
813 | ||
572e8f3e | 814 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
5e6e3a92 BZ |
815 | |
816 | if (ret) { | |
817 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, | |
5dbd326c | 818 | ret); |
5e6e3a92 BZ |
819 | return -1; |
820 | } | |
821 | ||
822 | nb = le16_to_cpu(*(__le16 *) (buffer)); | |
823 | if (nb > npayload) { | |
5dbd326c YAP |
824 | dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n", |
825 | __func__, nb, npayload); | |
5e6e3a92 BZ |
826 | return -1; |
827 | } | |
828 | ||
829 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); | |
830 | ||
831 | return ret; | |
832 | } | |
833 | ||
834 | /* | |
835 | * This function downloads the firmware to the card. | |
836 | * | |
837 | * Firmware is downloaded to the card in blocks. Every block download | |
838 | * is tested for CRC errors, and retried a number of times before | |
839 | * returning failure. | |
840 | */ | |
841 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
842 | struct mwifiex_fw_image *fw) | |
843 | { | |
05889f82 AK |
844 | struct sdio_mmc_card *card = adapter->card; |
845 | const struct mwifiex_sdio_card_reg *reg = card->reg; | |
270e58e8 | 846 | int ret; |
5e6e3a92 BZ |
847 | u8 *firmware = fw->fw_buf; |
848 | u32 firmware_len = fw->fw_len; | |
849 | u32 offset = 0; | |
ab93d4ff | 850 | u8 base0, base1; |
5e6e3a92 BZ |
851 | u8 *fwbuf; |
852 | u16 len = 0; | |
270e58e8 | 853 | u32 txlen, tx_blocks = 0, tries; |
5e6e3a92 BZ |
854 | u32 i = 0; |
855 | ||
856 | if (!firmware_len) { | |
5dbd326c YAP |
857 | dev_err(adapter->dev, |
858 | "firmware image not found! Terminating download\n"); | |
5e6e3a92 BZ |
859 | return -1; |
860 | } | |
861 | ||
862 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", | |
5dbd326c | 863 | firmware_len); |
5e6e3a92 BZ |
864 | |
865 | /* Assume that the allocated buffer is 8-byte aligned */ | |
866 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); | |
0d2e7a5c | 867 | if (!fwbuf) |
b53575ec | 868 | return -ENOMEM; |
5e6e3a92 BZ |
869 | |
870 | /* Perform firmware data transfer */ | |
871 | do { | |
872 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY | |
873 | bits */ | |
874 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | | |
875 | DN_LD_CARD_RDY); | |
876 | if (ret) { | |
877 | dev_err(adapter->dev, "FW download with helper:" | |
5dbd326c | 878 | " poll status timeout @ %d\n", offset); |
5e6e3a92 BZ |
879 | goto done; |
880 | } | |
881 | ||
882 | /* More data? */ | |
883 | if (offset >= firmware_len) | |
884 | break; | |
885 | ||
886 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
05889f82 | 887 | ret = mwifiex_read_reg(adapter, reg->base_0_reg, |
5e6e3a92 BZ |
888 | &base0); |
889 | if (ret) { | |
5dbd326c YAP |
890 | dev_err(adapter->dev, |
891 | "dev BASE0 register read failed: " | |
892 | "base0=%#04X(%d). Terminating dnld\n", | |
893 | base0, base0); | |
5e6e3a92 BZ |
894 | goto done; |
895 | } | |
05889f82 | 896 | ret = mwifiex_read_reg(adapter, reg->base_1_reg, |
5e6e3a92 BZ |
897 | &base1); |
898 | if (ret) { | |
5dbd326c YAP |
899 | dev_err(adapter->dev, |
900 | "dev BASE1 register read failed: " | |
901 | "base1=%#04X(%d). Terminating dnld\n", | |
902 | base1, base1); | |
5e6e3a92 BZ |
903 | goto done; |
904 | } | |
905 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); | |
906 | ||
907 | if (len) | |
908 | break; | |
909 | ||
e7891ba2 | 910 | usleep_range(10, 20); |
5e6e3a92 BZ |
911 | } |
912 | ||
913 | if (!len) { | |
914 | break; | |
915 | } else if (len > MWIFIEX_UPLD_SIZE) { | |
5dbd326c YAP |
916 | dev_err(adapter->dev, |
917 | "FW dnld failed @ %d, invalid length %d\n", | |
918 | offset, len); | |
5e6e3a92 BZ |
919 | ret = -1; |
920 | goto done; | |
921 | } | |
922 | ||
923 | txlen = len; | |
924 | ||
925 | if (len & BIT(0)) { | |
926 | i++; | |
927 | if (i > MAX_WRITE_IOMEM_RETRY) { | |
5dbd326c YAP |
928 | dev_err(adapter->dev, |
929 | "FW dnld failed @ %d, over max retry\n", | |
930 | offset); | |
5e6e3a92 BZ |
931 | ret = -1; |
932 | goto done; | |
933 | } | |
934 | dev_err(adapter->dev, "CRC indicated by the helper:" | |
5dbd326c | 935 | " len = 0x%04X, txlen = %d\n", len, txlen); |
5e6e3a92 BZ |
936 | len &= ~BIT(0); |
937 | /* Setting this to 0 to resend from same offset */ | |
938 | txlen = 0; | |
939 | } else { | |
940 | i = 0; | |
941 | ||
942 | /* Set blocksize to transfer - checking for last | |
943 | block */ | |
944 | if (firmware_len - offset < txlen) | |
945 | txlen = firmware_len - offset; | |
946 | ||
5dbd326c YAP |
947 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) |
948 | / MWIFIEX_SDIO_BLOCK_SIZE; | |
5e6e3a92 BZ |
949 | |
950 | /* Copy payload to buffer */ | |
951 | memmove(fwbuf, &firmware[offset], txlen); | |
952 | } | |
953 | ||
954 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * | |
955 | MWIFIEX_SDIO_BLOCK_SIZE, | |
572e8f3e | 956 | adapter->ioport); |
5e6e3a92 | 957 | if (ret) { |
5dbd326c YAP |
958 | dev_err(adapter->dev, |
959 | "FW download, write iomem (%d) failed @ %d\n", | |
960 | i, offset); | |
5e6e3a92 BZ |
961 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
962 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
963 | ||
964 | ret = -1; | |
965 | goto done; | |
966 | } | |
967 | ||
968 | offset += txlen; | |
969 | } while (true); | |
970 | ||
971 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", | |
5dbd326c | 972 | offset); |
5e6e3a92 BZ |
973 | |
974 | ret = 0; | |
975 | done: | |
976 | kfree(fwbuf); | |
977 | return ret; | |
978 | } | |
979 | ||
980 | /* | |
981 | * This function checks the firmware status in card. | |
982 | * | |
983 | * The winner interface is also determined by this function. | |
984 | */ | |
985 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, | |
d930faee | 986 | u32 poll_num) |
5e6e3a92 | 987 | { |
05889f82 | 988 | struct sdio_mmc_card *card = adapter->card; |
5e6e3a92 BZ |
989 | int ret = 0; |
990 | u16 firmware_stat; | |
991 | u32 tries; | |
ab93d4ff | 992 | u8 winner_status; |
5e6e3a92 BZ |
993 | |
994 | /* Wait for firmware initialization event */ | |
995 | for (tries = 0; tries < poll_num; tries++) { | |
996 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); | |
997 | if (ret) | |
998 | continue; | |
d930faee | 999 | if (firmware_stat == FIRMWARE_READY_SDIO) { |
5e6e3a92 BZ |
1000 | ret = 0; |
1001 | break; | |
1002 | } else { | |
a76b20e5 | 1003 | msleep(100); |
5e6e3a92 BZ |
1004 | ret = -1; |
1005 | } | |
1006 | } | |
1007 | ||
d930faee | 1008 | if (ret) { |
5e6e3a92 | 1009 | if (mwifiex_read_reg |
05889f82 | 1010 | (adapter, card->reg->status_reg_0, &winner_status)) |
5e6e3a92 BZ |
1011 | winner_status = 0; |
1012 | ||
1013 | if (winner_status) | |
d930faee | 1014 | adapter->winner = 0; |
5e6e3a92 | 1015 | else |
d930faee | 1016 | adapter->winner = 1; |
5e6e3a92 BZ |
1017 | } |
1018 | return ret; | |
1019 | } | |
1020 | ||
5e6e3a92 BZ |
1021 | /* |
1022 | * This function decodes a received packet. | |
1023 | * | |
1024 | * Based on the type, the packet is treated as either a data, or | |
1025 | * a command response, or an event, and the correct handler | |
1026 | * function is invoked. | |
1027 | */ | |
1028 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, | |
1029 | struct sk_buff *skb, u32 upld_typ) | |
1030 | { | |
1031 | u8 *cmd_buf; | |
d03b4aa7 AP |
1032 | __le16 *curr_ptr = (__le16 *)skb->data; |
1033 | u16 pkt_len = le16_to_cpu(*curr_ptr); | |
5e6e3a92 | 1034 | |
d03b4aa7 | 1035 | skb_trim(skb, pkt_len); |
5e6e3a92 BZ |
1036 | skb_pull(skb, INTF_HEADER_LEN); |
1037 | ||
1038 | switch (upld_typ) { | |
1039 | case MWIFIEX_TYPE_DATA: | |
1040 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); | |
1041 | mwifiex_handle_rx_packet(adapter, skb); | |
1042 | break; | |
1043 | ||
1044 | case MWIFIEX_TYPE_CMD: | |
1045 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); | |
1046 | /* take care of curr_cmd = NULL case */ | |
1047 | if (!adapter->curr_cmd) { | |
1048 | cmd_buf = adapter->upld_buf; | |
1049 | ||
1050 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) | |
1051 | mwifiex_process_sleep_confirm_resp(adapter, | |
5dbd326c YAP |
1052 | skb->data, |
1053 | skb->len); | |
5e6e3a92 | 1054 | |
5dbd326c YAP |
1055 | memcpy(cmd_buf, skb->data, |
1056 | min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, | |
1057 | skb->len)); | |
5e6e3a92 BZ |
1058 | |
1059 | dev_kfree_skb_any(skb); | |
1060 | } else { | |
1061 | adapter->cmd_resp_received = true; | |
1062 | adapter->curr_cmd->resp_skb = skb; | |
1063 | } | |
1064 | break; | |
1065 | ||
1066 | case MWIFIEX_TYPE_EVENT: | |
1067 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); | |
cfcd926e | 1068 | adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data); |
5e6e3a92 | 1069 | |
5e6e3a92 | 1070 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) |
e80c81dc AK |
1071 | memcpy(adapter->event_body, |
1072 | skb->data + MWIFIEX_EVENT_HEADER_LEN, | |
1073 | skb->len); | |
5e6e3a92 BZ |
1074 | |
1075 | /* event cause has been saved to adapter->event_cause */ | |
1076 | adapter->event_received = true; | |
1077 | adapter->event_skb = skb; | |
1078 | ||
1079 | break; | |
1080 | ||
1081 | default: | |
1082 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); | |
1083 | dev_kfree_skb_any(skb); | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * This function transfers received packets from card to driver, performing | |
1092 | * aggregation if required. | |
1093 | * | |
1094 | * For data received on control port, or if aggregation is disabled, the | |
1095 | * received buffers are uploaded as separate packets. However, if aggregation | |
1096 | * is enabled and required, the buffers are copied onto an aggregation buffer, | |
1097 | * provided there is space left, processed and finally uploaded. | |
1098 | */ | |
1099 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, | |
1100 | struct sk_buff *skb, u8 port) | |
1101 | { | |
1102 | struct sdio_mmc_card *card = adapter->card; | |
1103 | s32 f_do_rx_aggr = 0; | |
1104 | s32 f_do_rx_cur = 0; | |
1105 | s32 f_aggr_cur = 0; | |
1106 | struct sk_buff *skb_deaggr; | |
270e58e8 | 1107 | u32 pind; |
0fc0d43b | 1108 | u32 pkt_len, pkt_type, mport; |
5e6e3a92 BZ |
1109 | u8 *curr_ptr; |
1110 | u32 rx_len = skb->len; | |
1111 | ||
b60186f8 | 1112 | if ((card->has_control_mask) && (port == CTRL_PORT)) { |
5e6e3a92 BZ |
1113 | /* Read the command Resp without aggr */ |
1114 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " | |
5dbd326c | 1115 | "response\n", __func__); |
5e6e3a92 BZ |
1116 | |
1117 | f_do_rx_cur = 1; | |
1118 | goto rx_curr_single; | |
1119 | } | |
1120 | ||
1121 | if (!card->mpa_rx.enabled) { | |
1122 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", | |
5dbd326c | 1123 | __func__); |
5e6e3a92 BZ |
1124 | |
1125 | f_do_rx_cur = 1; | |
1126 | goto rx_curr_single; | |
1127 | } | |
1128 | ||
b60186f8 YAP |
1129 | if ((!card->has_control_mask && (card->mp_rd_bitmap & |
1130 | card->reg->data_port_mask)) || | |
1131 | (card->has_control_mask && (card->mp_rd_bitmap & | |
1132 | (~((u32) CTRL_PORT_MASK))))) { | |
5e6e3a92 BZ |
1133 | /* Some more data RX pending */ |
1134 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); | |
1135 | ||
1136 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1137 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { | |
1138 | f_aggr_cur = 1; | |
1139 | } else { | |
1140 | /* No room in Aggr buf, do rx aggr now */ | |
1141 | f_do_rx_aggr = 1; | |
1142 | f_do_rx_cur = 1; | |
1143 | } | |
1144 | } else { | |
1145 | /* Rx aggr not in progress */ | |
1146 | f_aggr_cur = 1; | |
1147 | } | |
1148 | ||
1149 | } else { | |
1150 | /* No more data RX pending */ | |
1151 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); | |
1152 | ||
1153 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1154 | f_do_rx_aggr = 1; | |
1155 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) | |
1156 | f_aggr_cur = 1; | |
1157 | else | |
1158 | /* No room in Aggr buf, do rx aggr now */ | |
1159 | f_do_rx_cur = 1; | |
1160 | } else { | |
1161 | f_do_rx_cur = 1; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | if (f_aggr_cur) { | |
1166 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); | |
1167 | /* Curr pkt can be aggregated */ | |
c23b7c8f | 1168 | mp_rx_aggr_setup(card, skb, port); |
5e6e3a92 BZ |
1169 | |
1170 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || | |
c23b7c8f | 1171 | mp_rx_aggr_port_limit_reached(card)) { |
5e6e3a92 | 1172 | dev_dbg(adapter->dev, "info: %s: aggregated packet " |
5dbd326c | 1173 | "limit reached\n", __func__); |
5e6e3a92 BZ |
1174 | /* No more pkts allowed in Aggr buf, rx it */ |
1175 | f_do_rx_aggr = 1; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | if (f_do_rx_aggr) { | |
1180 | /* do aggr RX now */ | |
1181 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", | |
5dbd326c | 1182 | card->mpa_rx.pkt_cnt); |
5e6e3a92 | 1183 | |
b60186f8 YAP |
1184 | if (card->supports_sdio_new_mode) { |
1185 | int i; | |
1186 | u32 port_count; | |
1187 | ||
1188 | for (i = 0, port_count = 0; i < card->max_ports; i++) | |
1189 | if (card->mpa_rx.ports & BIT(i)) | |
1190 | port_count++; | |
1191 | ||
1192 | /* Reading data from "start_port + 0" to "start_port + | |
1193 | * port_count -1", so decrease the count by 1 | |
1194 | */ | |
1195 | port_count--; | |
1196 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1197 | (port_count << 8)) + card->mpa_rx.start_port; | |
1198 | } else { | |
1199 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1200 | (card->mpa_rx.ports << 4)) + | |
1201 | card->mpa_rx.start_port; | |
1202 | } | |
0fc0d43b | 1203 | |
5e6e3a92 | 1204 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, |
0fc0d43b | 1205 | card->mpa_rx.buf_len, mport, 1)) |
17a60b48 | 1206 | goto error; |
5e6e3a92 BZ |
1207 | |
1208 | curr_ptr = card->mpa_rx.buf; | |
1209 | ||
1210 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1211 | ||
1212 | /* get curr PKT len & type */ | |
cfcd926e TW |
1213 | pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]); |
1214 | pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]); | |
5e6e3a92 BZ |
1215 | |
1216 | /* copy pkt to deaggr buf */ | |
1217 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1218 | ||
1219 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= | |
1220 | card->mpa_rx.len_arr[pind])) { | |
1221 | ||
1222 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); | |
1223 | ||
1224 | skb_trim(skb_deaggr, pkt_len); | |
1225 | ||
1226 | /* Process de-aggr packet */ | |
1227 | mwifiex_decode_rx_packet(adapter, skb_deaggr, | |
1228 | pkt_type); | |
1229 | } else { | |
1230 | dev_err(adapter->dev, "wrong aggr pkt:" | |
1231 | " type=%d len=%d max_len=%d\n", | |
1232 | pkt_type, pkt_len, | |
1233 | card->mpa_rx.len_arr[pind]); | |
1234 | dev_kfree_skb_any(skb_deaggr); | |
1235 | } | |
1236 | curr_ptr += card->mpa_rx.len_arr[pind]; | |
1237 | } | |
1238 | MP_RX_AGGR_BUF_RESET(card); | |
1239 | } | |
1240 | ||
1241 | rx_curr_single: | |
1242 | if (f_do_rx_cur) { | |
1243 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", | |
1244 | port, rx_len); | |
1245 | ||
1246 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, | |
1247 | skb->data, skb->len, | |
1248 | adapter->ioport + port)) | |
17a60b48 | 1249 | goto error; |
5e6e3a92 BZ |
1250 | |
1251 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1252 | } | |
1253 | ||
1254 | return 0; | |
17a60b48 AP |
1255 | |
1256 | error: | |
1257 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1258 | /* Multiport-aggregation transfer failed - cleanup */ | |
1259 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1260 | /* copy pkt to deaggr buf */ | |
1261 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1262 | dev_kfree_skb_any(skb_deaggr); | |
1263 | } | |
1264 | MP_RX_AGGR_BUF_RESET(card); | |
1265 | } | |
1266 | ||
1267 | if (f_do_rx_cur) | |
1268 | /* Single transfer pending. Free curr buff also */ | |
1269 | dev_kfree_skb_any(skb); | |
1270 | ||
1271 | return -1; | |
5e6e3a92 BZ |
1272 | } |
1273 | ||
1274 | /* | |
1275 | * This function checks the current interrupt status. | |
1276 | * | |
1277 | * The following interrupts are checked and handled by this function - | |
1278 | * - Data sent | |
1279 | * - Command sent | |
1280 | * - Packets received | |
1281 | * | |
1282 | * Since the firmware does not generate download ready interrupt if the | |
1283 | * port updated is command port only, command sent interrupt checking | |
1284 | * should be done manually, and for every SDIO interrupt. | |
1285 | * | |
1286 | * In case of Rx packets received, the packets are uploaded from card to | |
1287 | * host and processed accordingly. | |
1288 | */ | |
1289 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) | |
1290 | { | |
1291 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 1292 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5e6e3a92 BZ |
1293 | int ret = 0; |
1294 | u8 sdio_ireg; | |
270e58e8 | 1295 | struct sk_buff *skb; |
5e6e3a92 BZ |
1296 | u8 port = CTRL_PORT; |
1297 | u32 len_reg_l, len_reg_u; | |
1298 | u32 rx_blocks; | |
1299 | u16 rx_len; | |
1300 | unsigned long flags; | |
b60186f8 YAP |
1301 | u32 bitmap; |
1302 | u8 cr; | |
5e6e3a92 BZ |
1303 | |
1304 | spin_lock_irqsave(&adapter->int_lock, flags); | |
1305 | sdio_ireg = adapter->int_status; | |
1306 | adapter->int_status = 0; | |
1307 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
1308 | ||
1309 | if (!sdio_ireg) | |
1310 | return ret; | |
1311 | ||
b60186f8 YAP |
1312 | /* Following interrupt is only for SDIO new mode */ |
1313 | if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) | |
1314 | adapter->cmd_sent = false; | |
1315 | ||
1316 | /* Following interrupt is only for SDIO new mode */ | |
1317 | if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { | |
1318 | u32 pkt_type; | |
1319 | ||
1320 | /* read the len of control packet */ | |
1321 | rx_len = card->mp_regs[CMD_RD_LEN_1] << 8; | |
1322 | rx_len |= (u16) card->mp_regs[CMD_RD_LEN_0]; | |
1323 | rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE); | |
1324 | if (rx_len <= INTF_HEADER_LEN || | |
1325 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1326 | MWIFIEX_RX_DATA_BUF_SIZE) | |
1327 | return -1; | |
1328 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1329 | ||
1330 | skb = dev_alloc_skb(rx_len); | |
1331 | if (!skb) | |
1332 | return -1; | |
1333 | ||
1334 | skb_put(skb, rx_len); | |
1335 | ||
1336 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data, | |
1337 | skb->len, adapter->ioport | | |
1338 | CMD_PORT_SLCT)) { | |
1339 | dev_err(adapter->dev, | |
1340 | "%s: failed to card_to_host", __func__); | |
1341 | dev_kfree_skb_any(skb); | |
1342 | goto term_cmd; | |
1343 | } | |
1344 | ||
1345 | if ((pkt_type != MWIFIEX_TYPE_CMD) && | |
1346 | (pkt_type != MWIFIEX_TYPE_EVENT)) | |
1347 | dev_err(adapter->dev, | |
1348 | "%s:Received wrong packet on cmd port", | |
1349 | __func__); | |
1350 | ||
1351 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1352 | } | |
1353 | ||
5e6e3a92 | 1354 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { |
b60186f8 YAP |
1355 | bitmap = (u32) card->mp_regs[reg->wr_bitmap_l]; |
1356 | bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8; | |
1357 | if (card->supports_sdio_new_mode) { | |
1358 | bitmap |= | |
1359 | ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16; | |
1360 | bitmap |= | |
1361 | ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24; | |
1362 | } | |
1363 | card->mp_wr_bitmap = bitmap; | |
1364 | ||
1365 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n", | |
5dbd326c | 1366 | card->mp_wr_bitmap); |
5e6e3a92 BZ |
1367 | if (adapter->data_sent && |
1368 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { | |
1369 | dev_dbg(adapter->dev, | |
1370 | "info: <--- Tx DONE Interrupt --->\n"); | |
1371 | adapter->data_sent = false; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | /* As firmware will not generate download ready interrupt if the port | |
1376 | updated is command port only, cmd_sent should be done for any SDIO | |
1377 | interrupt. */ | |
b60186f8 | 1378 | if (card->has_control_mask && adapter->cmd_sent) { |
5e6e3a92 BZ |
1379 | /* Check if firmware has attach buffer at command port and |
1380 | update just that in wr_bit_map. */ | |
1381 | card->mp_wr_bitmap |= | |
05889f82 | 1382 | (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK; |
5e6e3a92 BZ |
1383 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) |
1384 | adapter->cmd_sent = false; | |
1385 | } | |
1386 | ||
1387 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", | |
5dbd326c | 1388 | adapter->cmd_sent, adapter->data_sent); |
5e6e3a92 | 1389 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { |
b60186f8 YAP |
1390 | bitmap = (u32) card->mp_regs[reg->rd_bitmap_l]; |
1391 | bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8; | |
1392 | if (card->supports_sdio_new_mode) { | |
1393 | bitmap |= | |
1394 | ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16; | |
1395 | bitmap |= | |
1396 | ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24; | |
1397 | } | |
1398 | card->mp_rd_bitmap = bitmap; | |
1399 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n", | |
5dbd326c | 1400 | card->mp_rd_bitmap); |
5e6e3a92 BZ |
1401 | |
1402 | while (true) { | |
1403 | ret = mwifiex_get_rd_port(adapter, &port); | |
1404 | if (ret) { | |
1405 | dev_dbg(adapter->dev, | |
1406 | "info: no more rd_port available\n"); | |
1407 | break; | |
1408 | } | |
05889f82 AK |
1409 | len_reg_l = reg->rd_len_p0_l + (port << 1); |
1410 | len_reg_u = reg->rd_len_p0_u + (port << 1); | |
5e6e3a92 BZ |
1411 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; |
1412 | rx_len |= (u16) card->mp_regs[len_reg_l]; | |
1413 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", | |
5dbd326c | 1414 | port, rx_len); |
5e6e3a92 BZ |
1415 | rx_blocks = |
1416 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - | |
1417 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
5dbd326c YAP |
1418 | if (rx_len <= INTF_HEADER_LEN || |
1419 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1420 | MWIFIEX_RX_DATA_BUF_SIZE) { | |
5e6e3a92 | 1421 | dev_err(adapter->dev, "invalid rx_len=%d\n", |
5dbd326c | 1422 | rx_len); |
5e6e3a92 BZ |
1423 | return -1; |
1424 | } | |
1425 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1426 | ||
1427 | skb = dev_alloc_skb(rx_len); | |
1428 | ||
1429 | if (!skb) { | |
1430 | dev_err(adapter->dev, "%s: failed to alloc skb", | |
5dbd326c | 1431 | __func__); |
5e6e3a92 BZ |
1432 | return -1; |
1433 | } | |
1434 | ||
1435 | skb_put(skb, rx_len); | |
1436 | ||
1437 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", | |
5dbd326c | 1438 | rx_len, skb->len); |
5e6e3a92 BZ |
1439 | |
1440 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, | |
1441 | port)) { | |
5e6e3a92 | 1442 | dev_err(adapter->dev, "card_to_host_mpa failed:" |
5dbd326c | 1443 | " int status=%#x\n", sdio_ireg); |
b60186f8 | 1444 | goto term_cmd; |
5e6e3a92 BZ |
1445 | } |
1446 | } | |
1447 | } | |
1448 | ||
1449 | return 0; | |
b60186f8 YAP |
1450 | |
1451 | term_cmd: | |
1452 | /* terminate cmd */ | |
1453 | if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) | |
1454 | dev_err(adapter->dev, "read CFG reg failed\n"); | |
1455 | else | |
1456 | dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr); | |
1457 | ||
1458 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) | |
1459 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
1460 | else | |
1461 | dev_dbg(adapter->dev, "info: write success\n"); | |
1462 | ||
1463 | if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) | |
1464 | dev_err(adapter->dev, "read CFG reg failed\n"); | |
1465 | else | |
1466 | dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr); | |
1467 | ||
1468 | return -1; | |
5e6e3a92 BZ |
1469 | } |
1470 | ||
1471 | /* | |
1472 | * This function aggregates transmission buffers in driver and downloads | |
1473 | * the aggregated packet to card. | |
1474 | * | |
1475 | * The individual packets are aggregated by copying into an aggregation | |
1476 | * buffer and then downloaded to the card. Previous unsent packets in the | |
1477 | * aggregation buffer are pre-copied first before new packets are added. | |
1478 | * Aggregation is done till there is space left in the aggregation buffer, | |
1479 | * or till new packets are available. | |
1480 | * | |
1481 | * The function will only download the packet to the card when aggregation | |
1482 | * stops, otherwise it will just aggregate the packet in aggregation buffer | |
1483 | * and return. | |
1484 | */ | |
1485 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, | |
0fc0d43b | 1486 | u8 *payload, u32 pkt_len, u32 port, |
5e6e3a92 BZ |
1487 | u32 next_pkt_len) |
1488 | { | |
1489 | struct sdio_mmc_card *card = adapter->card; | |
1490 | int ret = 0; | |
1491 | s32 f_send_aggr_buf = 0; | |
1492 | s32 f_send_cur_buf = 0; | |
1493 | s32 f_precopy_cur_buf = 0; | |
1494 | s32 f_postcopy_cur_buf = 0; | |
0fc0d43b | 1495 | u32 mport; |
5e6e3a92 | 1496 | |
b60186f8 YAP |
1497 | if (!card->mpa_tx.enabled || |
1498 | (card->has_control_mask && (port == CTRL_PORT)) || | |
1499 | (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) { | |
5e6e3a92 | 1500 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", |
5dbd326c | 1501 | __func__); |
5e6e3a92 BZ |
1502 | |
1503 | f_send_cur_buf = 1; | |
1504 | goto tx_curr_single; | |
1505 | } | |
1506 | ||
1507 | if (next_pkt_len) { | |
1508 | /* More pkt in TX queue */ | |
1509 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", | |
5dbd326c | 1510 | __func__); |
5e6e3a92 BZ |
1511 | |
1512 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
c23b7c8f | 1513 | if (!mp_tx_aggr_port_limit_reached(card) && |
5e6e3a92 BZ |
1514 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { |
1515 | f_precopy_cur_buf = 1; | |
1516 | ||
1517 | if (!(card->mp_wr_bitmap & | |
5dbd326c YAP |
1518 | (1 << card->curr_wr_port)) || |
1519 | !MP_TX_AGGR_BUF_HAS_ROOM( | |
1520 | card, pkt_len + next_pkt_len)) | |
5e6e3a92 BZ |
1521 | f_send_aggr_buf = 1; |
1522 | } else { | |
1523 | /* No room in Aggr buf, send it */ | |
1524 | f_send_aggr_buf = 1; | |
1525 | ||
c23b7c8f | 1526 | if (mp_tx_aggr_port_limit_reached(card) || |
5e6e3a92 BZ |
1527 | !(card->mp_wr_bitmap & |
1528 | (1 << card->curr_wr_port))) | |
1529 | f_send_cur_buf = 1; | |
1530 | else | |
1531 | f_postcopy_cur_buf = 1; | |
1532 | } | |
1533 | } else { | |
5dbd326c YAP |
1534 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && |
1535 | (card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
5e6e3a92 BZ |
1536 | f_precopy_cur_buf = 1; |
1537 | else | |
1538 | f_send_cur_buf = 1; | |
1539 | } | |
1540 | } else { | |
1541 | /* Last pkt in TX queue */ | |
1542 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", | |
5dbd326c | 1543 | __func__); |
5e6e3a92 BZ |
1544 | |
1545 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1546 | /* some packs in Aggr buf already */ | |
1547 | f_send_aggr_buf = 1; | |
1548 | ||
1549 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) | |
1550 | f_precopy_cur_buf = 1; | |
1551 | else | |
1552 | /* No room in Aggr buf, send it */ | |
1553 | f_send_cur_buf = 1; | |
1554 | } else { | |
1555 | f_send_cur_buf = 1; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | if (f_precopy_cur_buf) { | |
1560 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", | |
5dbd326c | 1561 | __func__); |
5e6e3a92 BZ |
1562 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1563 | ||
1564 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || | |
c23b7c8f | 1565 | mp_tx_aggr_port_limit_reached(card)) |
5e6e3a92 BZ |
1566 | /* No more pkts allowed in Aggr buf, send it */ |
1567 | f_send_aggr_buf = 1; | |
1568 | } | |
1569 | ||
1570 | if (f_send_aggr_buf) { | |
1571 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", | |
5dbd326c | 1572 | __func__, |
5e6e3a92 | 1573 | card->mpa_tx.start_port, card->mpa_tx.ports); |
b60186f8 YAP |
1574 | if (card->supports_sdio_new_mode) { |
1575 | u32 port_count; | |
1576 | int i; | |
1577 | ||
1578 | for (i = 0, port_count = 0; i < card->max_ports; i++) | |
1579 | if (card->mpa_tx.ports & BIT(i)) | |
1580 | port_count++; | |
1581 | ||
1582 | /* Writing data from "start_port + 0" to "start_port + | |
1583 | * port_count -1", so decrease the count by 1 | |
1584 | */ | |
1585 | port_count--; | |
1586 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1587 | (port_count << 8)) + card->mpa_tx.start_port; | |
1588 | } else { | |
1589 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1590 | (card->mpa_tx.ports << 4)) + | |
1591 | card->mpa_tx.start_port; | |
1592 | } | |
1593 | ||
5e6e3a92 | 1594 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, |
0fc0d43b | 1595 | card->mpa_tx.buf_len, mport); |
5e6e3a92 BZ |
1596 | |
1597 | MP_TX_AGGR_BUF_RESET(card); | |
1598 | } | |
1599 | ||
1600 | tx_curr_single: | |
1601 | if (f_send_cur_buf) { | |
1602 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", | |
5dbd326c | 1603 | __func__, port); |
5e6e3a92 BZ |
1604 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, |
1605 | adapter->ioport + port); | |
1606 | } | |
1607 | ||
1608 | if (f_postcopy_cur_buf) { | |
1609 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", | |
5dbd326c | 1610 | __func__); |
5e6e3a92 BZ |
1611 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1612 | } | |
1613 | ||
1614 | return ret; | |
1615 | } | |
1616 | ||
1617 | /* | |
1618 | * This function downloads data from driver to card. | |
1619 | * | |
1620 | * Both commands and data packets are transferred to the card by this | |
1621 | * function. | |
1622 | * | |
1623 | * This function adds the SDIO specific header to the front of the buffer | |
1624 | * before transferring. The header contains the length of the packet and | |
1625 | * the type. The firmware handles the packets based upon this set type. | |
1626 | */ | |
1627 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, | |
d930faee | 1628 | u8 type, struct sk_buff *skb, |
5e6e3a92 BZ |
1629 | struct mwifiex_tx_param *tx_param) |
1630 | { | |
1631 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 1632 | int ret; |
5e6e3a92 BZ |
1633 | u32 buf_block_len; |
1634 | u32 blk_size; | |
0fc0d43b | 1635 | u32 port = CTRL_PORT; |
d930faee AK |
1636 | u8 *payload = (u8 *)skb->data; |
1637 | u32 pkt_len = skb->len; | |
5e6e3a92 BZ |
1638 | |
1639 | /* Allocate buffer and copy payload */ | |
1640 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; | |
1641 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; | |
83e612f6 TM |
1642 | *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len); |
1643 | *(__le16 *)&payload[2] = cpu_to_le16(type); | |
5e6e3a92 BZ |
1644 | |
1645 | /* | |
1646 | * This is SDIO specific header | |
1647 | * u16 length, | |
1648 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, | |
1649 | * MWIFIEX_TYPE_EVENT = 3) | |
1650 | */ | |
1651 | if (type == MWIFIEX_TYPE_DATA) { | |
1652 | ret = mwifiex_get_wr_port_data(adapter, &port); | |
1653 | if (ret) { | |
1654 | dev_err(adapter->dev, "%s: no wr_port available\n", | |
5dbd326c | 1655 | __func__); |
5e6e3a92 BZ |
1656 | return ret; |
1657 | } | |
1658 | } else { | |
1659 | adapter->cmd_sent = true; | |
1660 | /* Type must be MWIFIEX_TYPE_CMD */ | |
1661 | ||
1662 | if (pkt_len <= INTF_HEADER_LEN || | |
1663 | pkt_len > MWIFIEX_UPLD_SIZE) | |
1664 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", | |
5dbd326c | 1665 | __func__, payload, pkt_len); |
b60186f8 YAP |
1666 | |
1667 | if (card->supports_sdio_new_mode) | |
1668 | port = CMD_PORT_SLCT; | |
5e6e3a92 BZ |
1669 | } |
1670 | ||
1671 | /* Transfer data to card */ | |
1672 | pkt_len = buf_block_len * blk_size; | |
1673 | ||
1674 | if (tx_param) | |
1675 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c YAP |
1676 | port, tx_param->next_pkt_len |
1677 | ); | |
5e6e3a92 BZ |
1678 | else |
1679 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c | 1680 | port, 0); |
5e6e3a92 BZ |
1681 | |
1682 | if (ret) { | |
1683 | if (type == MWIFIEX_TYPE_CMD) | |
1684 | adapter->cmd_sent = false; | |
1685 | if (type == MWIFIEX_TYPE_DATA) | |
1686 | adapter->data_sent = false; | |
1687 | } else { | |
1688 | if (type == MWIFIEX_TYPE_DATA) { | |
1689 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1690 | adapter->data_sent = true; | |
1691 | else | |
1692 | adapter->data_sent = false; | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | return ret; | |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * This function allocates the MPA Tx and Rx buffers. | |
1701 | */ | |
1702 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, | |
1703 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) | |
1704 | { | |
1705 | struct sdio_mmc_card *card = adapter->card; | |
1706 | int ret = 0; | |
1707 | ||
1708 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); | |
1709 | if (!card->mpa_tx.buf) { | |
5e6e3a92 BZ |
1710 | ret = -1; |
1711 | goto error; | |
1712 | } | |
1713 | ||
1714 | card->mpa_tx.buf_size = mpa_tx_buf_size; | |
1715 | ||
1716 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); | |
1717 | if (!card->mpa_rx.buf) { | |
5e6e3a92 BZ |
1718 | ret = -1; |
1719 | goto error; | |
1720 | } | |
1721 | ||
1722 | card->mpa_rx.buf_size = mpa_rx_buf_size; | |
1723 | ||
1724 | error: | |
1725 | if (ret) { | |
1726 | kfree(card->mpa_tx.buf); | |
1727 | kfree(card->mpa_rx.buf); | |
1728 | } | |
1729 | ||
1730 | return ret; | |
1731 | } | |
1732 | ||
1733 | /* | |
1734 | * This function unregisters the SDIO device. | |
1735 | * | |
1736 | * The SDIO IRQ is released, the function is disabled and driver | |
1737 | * data is set to null. | |
1738 | */ | |
1739 | static void | |
1740 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1741 | { | |
1742 | struct sdio_mmc_card *card = adapter->card; | |
1743 | ||
1744 | if (adapter->card) { | |
5e6e3a92 | 1745 | sdio_claim_host(card->func); |
5e6e3a92 BZ |
1746 | sdio_disable_func(card->func); |
1747 | sdio_release_host(card->func); | |
1748 | sdio_set_drvdata(card->func, NULL); | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | /* | |
1753 | * This function registers the SDIO device. | |
1754 | * | |
1755 | * SDIO IRQ is claimed, block size is set and driver data is initialized. | |
1756 | */ | |
1757 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1758 | { | |
232fde06 | 1759 | int ret; |
5e6e3a92 BZ |
1760 | struct sdio_mmc_card *card = adapter->card; |
1761 | struct sdio_func *func = card->func; | |
1762 | ||
1763 | /* save adapter pointer in card */ | |
1764 | card->adapter = adapter; | |
1765 | ||
1766 | sdio_claim_host(func); | |
1767 | ||
5e6e3a92 BZ |
1768 | /* Set block size */ |
1769 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); | |
232fde06 | 1770 | sdio_release_host(func); |
5e6e3a92 BZ |
1771 | if (ret) { |
1772 | pr_err("cannot set SDIO block size\n"); | |
232fde06 | 1773 | return ret; |
5e6e3a92 BZ |
1774 | } |
1775 | ||
5e6e3a92 BZ |
1776 | sdio_set_drvdata(func, card); |
1777 | ||
1778 | adapter->dev = &func->dev; | |
e3bea1c8 | 1779 | |
05889f82 | 1780 | strcpy(adapter->fw_name, card->firmware); |
5e6e3a92 BZ |
1781 | |
1782 | return 0; | |
5e6e3a92 BZ |
1783 | } |
1784 | ||
1785 | /* | |
1786 | * This function initializes the SDIO driver. | |
1787 | * | |
1788 | * The following initializations steps are followed - | |
1789 | * - Read the Host interrupt status register to acknowledge | |
1790 | * the first interrupt got from bootloader | |
1791 | * - Disable host interrupt mask register | |
1792 | * - Get SDIO port | |
5e6e3a92 BZ |
1793 | * - Initialize SDIO variables in card |
1794 | * - Allocate MP registers | |
1795 | * - Allocate MPA Tx and Rx buffers | |
1796 | */ | |
1797 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) | |
1798 | { | |
1799 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 1800 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5e6e3a92 | 1801 | int ret; |
ab93d4ff | 1802 | u8 sdio_ireg; |
5e6e3a92 BZ |
1803 | |
1804 | /* | |
1805 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got | |
1806 | * from the bootloader. If we don't do this we get a interrupt | |
1807 | * as soon as we register the irq. | |
1808 | */ | |
1809 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); | |
1810 | ||
5e6e3a92 BZ |
1811 | /* Get SDIO ioport */ |
1812 | mwifiex_init_sdio_ioport(adapter); | |
1813 | ||
5e6e3a92 BZ |
1814 | /* Initialize SDIO variables in card */ |
1815 | card->mp_rd_bitmap = 0; | |
1816 | card->mp_wr_bitmap = 0; | |
05889f82 AK |
1817 | card->curr_rd_port = reg->start_rd_port; |
1818 | card->curr_wr_port = reg->start_wr_port; | |
5e6e3a92 | 1819 | |
05889f82 | 1820 | card->mp_data_port_mask = reg->data_port_mask; |
5e6e3a92 BZ |
1821 | |
1822 | card->mpa_tx.buf_len = 0; | |
1823 | card->mpa_tx.pkt_cnt = 0; | |
1824 | card->mpa_tx.start_port = 0; | |
1825 | ||
7d7ab022 | 1826 | card->mpa_tx.enabled = 1; |
05889f82 | 1827 | card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; |
5e6e3a92 BZ |
1828 | |
1829 | card->mpa_rx.buf_len = 0; | |
1830 | card->mpa_rx.pkt_cnt = 0; | |
1831 | card->mpa_rx.start_port = 0; | |
1832 | ||
7d7ab022 | 1833 | card->mpa_rx.enabled = 1; |
05889f82 | 1834 | card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; |
5e6e3a92 BZ |
1835 | |
1836 | /* Allocate buffers for SDIO MP-A */ | |
05889f82 | 1837 | card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); |
0d2e7a5c | 1838 | if (!card->mp_regs) |
b53575ec | 1839 | return -ENOMEM; |
5e6e3a92 | 1840 | |
c23b7c8f AK |
1841 | /* Allocate skb pointer buffers */ |
1842 | card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * | |
1843 | card->mp_agg_pkt_limit, GFP_KERNEL); | |
1844 | card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * | |
1845 | card->mp_agg_pkt_limit, GFP_KERNEL); | |
5e6e3a92 BZ |
1846 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, |
1847 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, | |
1848 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); | |
1849 | if (ret) { | |
1850 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); | |
1851 | kfree(card->mp_regs); | |
1852 | return -1; | |
1853 | } | |
1854 | ||
1855 | return ret; | |
1856 | } | |
1857 | ||
1858 | /* | |
1859 | * This function resets the MPA Tx and Rx buffers. | |
1860 | */ | |
1861 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) | |
1862 | { | |
1863 | struct sdio_mmc_card *card = adapter->card; | |
1864 | ||
1865 | MP_TX_AGGR_BUF_RESET(card); | |
1866 | MP_RX_AGGR_BUF_RESET(card); | |
1867 | } | |
1868 | ||
1869 | /* | |
1870 | * This function cleans up the allocated card buffers. | |
1871 | * | |
1872 | * The following are freed by this function - | |
1873 | * - MP registers | |
1874 | * - MPA Tx buffer | |
1875 | * - MPA Rx buffer | |
1876 | */ | |
1877 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) | |
1878 | { | |
1879 | struct sdio_mmc_card *card = adapter->card; | |
1880 | ||
1881 | kfree(card->mp_regs); | |
c23b7c8f AK |
1882 | kfree(card->mpa_rx.skb_arr); |
1883 | kfree(card->mpa_rx.len_arr); | |
5e6e3a92 BZ |
1884 | kfree(card->mpa_tx.buf); |
1885 | kfree(card->mpa_rx.buf); | |
1886 | } | |
1887 | ||
1888 | /* | |
1889 | * This function updates the MP end port in card. | |
1890 | */ | |
1891 | static void | |
1892 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) | |
1893 | { | |
1894 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 1895 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5e6e3a92 BZ |
1896 | int i; |
1897 | ||
1898 | card->mp_end_port = port; | |
1899 | ||
05889f82 | 1900 | card->mp_data_port_mask = reg->data_port_mask; |
5e6e3a92 | 1901 | |
b60186f8 YAP |
1902 | if (reg->start_wr_port) { |
1903 | for (i = 1; i <= card->max_ports - card->mp_end_port; i++) | |
1904 | card->mp_data_port_mask &= | |
1905 | ~(1 << (card->max_ports - i)); | |
1906 | } | |
5e6e3a92 | 1907 | |
05889f82 | 1908 | card->curr_wr_port = reg->start_wr_port; |
5e6e3a92 BZ |
1909 | |
1910 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", | |
5dbd326c | 1911 | port, card->mp_data_port_mask); |
5e6e3a92 BZ |
1912 | } |
1913 | ||
d31ab357 AK |
1914 | static struct mmc_host *reset_host; |
1915 | static void sdio_card_reset_worker(struct work_struct *work) | |
1916 | { | |
7f5855c9 TH |
1917 | struct mmc_host *target = reset_host; |
1918 | ||
d31ab357 AK |
1919 | /* The actual reset operation must be run outside of driver thread. |
1920 | * This is because mmc_remove_host() will cause the device to be | |
1921 | * instantly destroyed, and the driver then needs to end its thread, | |
1922 | * leading to a deadlock. | |
1923 | * | |
1924 | * We run it in a totally independent workqueue. | |
1925 | */ | |
1926 | ||
1927 | pr_err("Resetting card...\n"); | |
7f5855c9 | 1928 | mmc_remove_host(target); |
d31ab357 AK |
1929 | /* 20ms delay is based on experiment with sdhci controller */ |
1930 | mdelay(20); | |
7f5855c9 | 1931 | mmc_add_host(target); |
d31ab357 AK |
1932 | } |
1933 | static DECLARE_WORK(card_reset_work, sdio_card_reset_worker); | |
1934 | ||
1935 | /* This function resets the card */ | |
1936 | static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) | |
1937 | { | |
1938 | struct sdio_mmc_card *card = adapter->card; | |
1939 | ||
d31ab357 AK |
1940 | reset_host = card->func->card->host; |
1941 | schedule_work(&card_reset_work); | |
1942 | } | |
1943 | ||
5e6e3a92 BZ |
1944 | static struct mwifiex_if_ops sdio_ops = { |
1945 | .init_if = mwifiex_init_sdio, | |
1946 | .cleanup_if = mwifiex_cleanup_sdio, | |
1947 | .check_fw_status = mwifiex_check_fw_status, | |
1948 | .prog_fw = mwifiex_prog_fw_w_helper, | |
1949 | .register_dev = mwifiex_register_dev, | |
1950 | .unregister_dev = mwifiex_unregister_dev, | |
1951 | .enable_int = mwifiex_sdio_enable_host_int, | |
232fde06 | 1952 | .disable_int = mwifiex_sdio_disable_host_int, |
5e6e3a92 BZ |
1953 | .process_int_status = mwifiex_process_int_status, |
1954 | .host_to_card = mwifiex_sdio_host_to_card, | |
1955 | .wakeup = mwifiex_pm_wakeup_card, | |
1956 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1957 | ||
1958 | /* SDIO specific */ | |
1959 | .update_mp_end_port = mwifiex_update_mp_end_port, | |
1960 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, | |
d930faee AK |
1961 | .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, |
1962 | .event_complete = mwifiex_sdio_event_complete, | |
d31ab357 | 1963 | .card_reset = mwifiex_sdio_card_reset, |
5e6e3a92 BZ |
1964 | }; |
1965 | ||
1966 | /* | |
1967 | * This function initializes the SDIO driver. | |
1968 | * | |
1969 | * This initiates the semaphore and registers the device with | |
1970 | * SDIO bus. | |
1971 | */ | |
1972 | static int | |
1973 | mwifiex_sdio_init_module(void) | |
1974 | { | |
5e6e3a92 BZ |
1975 | sema_init(&add_remove_card_sem, 1); |
1976 | ||
287546df AK |
1977 | /* Clear the flag in case user removes the card. */ |
1978 | user_rmmod = 0; | |
1979 | ||
636c4598 | 1980 | return sdio_register_driver(&mwifiex_sdio); |
5e6e3a92 BZ |
1981 | } |
1982 | ||
1983 | /* | |
1984 | * This function cleans up the SDIO driver. | |
1985 | * | |
1986 | * The following major steps are followed for cleanup - | |
1987 | * - Resume the device if its suspended | |
1988 | * - Disconnect the device if connected | |
1989 | * - Shutdown the firmware | |
1990 | * - Unregister the device from SDIO bus. | |
1991 | */ | |
1992 | static void | |
1993 | mwifiex_sdio_cleanup_module(void) | |
1994 | { | |
287546df AK |
1995 | if (!down_interruptible(&add_remove_card_sem)) |
1996 | up(&add_remove_card_sem); | |
5e6e3a92 | 1997 | |
287546df AK |
1998 | /* Set the flag as user is removing this module. */ |
1999 | user_rmmod = 1; | |
5e6e3a92 | 2000 | |
d31ab357 | 2001 | cancel_work_sync(&card_reset_work); |
5e6e3a92 BZ |
2002 | sdio_unregister_driver(&mwifiex_sdio); |
2003 | } | |
2004 | ||
2005 | module_init(mwifiex_sdio_init_module); | |
2006 | module_exit(mwifiex_sdio_cleanup_module); | |
2007 | ||
2008 | MODULE_AUTHOR("Marvell International Ltd."); | |
2009 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); | |
2010 | MODULE_VERSION(SDIO_VERSION); | |
2011 | MODULE_LICENSE("GPL v2"); | |
98e6b9df | 2012 | MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); |
e3bea1c8 BZ |
2013 | MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); |
2014 | MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); | |
b60186f8 | 2015 | MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME); |