Commit | Line | Data |
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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; | |
828cf222 | 87 | card->tx_buf_size = data->tx_buf_size; |
05889f82 AK |
88 | } |
89 | ||
5e6e3a92 BZ |
90 | sdio_claim_host(func); |
91 | ret = sdio_enable_func(func); | |
92 | sdio_release_host(func); | |
93 | ||
94 | if (ret) { | |
95 | pr_err("%s: failed to enable function\n", __func__); | |
b53575ec | 96 | kfree(card); |
5e6e3a92 BZ |
97 | return -EIO; |
98 | } | |
99 | ||
d930faee AK |
100 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops, |
101 | MWIFIEX_SDIO)) { | |
5e6e3a92 BZ |
102 | pr_err("%s: add card failed\n", __func__); |
103 | kfree(card); | |
104 | sdio_claim_host(func); | |
105 | ret = sdio_disable_func(func); | |
106 | sdio_release_host(func); | |
107 | ret = -1; | |
108 | } | |
109 | ||
110 | return ret; | |
111 | } | |
112 | ||
2cdf359a AK |
113 | /* |
114 | * SDIO resume. | |
115 | * | |
116 | * Kernel needs to suspend all functions separately. Therefore all | |
117 | * registered functions must have drivers with suspend and resume | |
118 | * methods. Failing that the kernel simply removes the whole card. | |
119 | * | |
120 | * If already not resumed, this function turns on the traffic and | |
121 | * sends a host sleep cancel request to the firmware. | |
122 | */ | |
123 | static int mwifiex_sdio_resume(struct device *dev) | |
124 | { | |
125 | struct sdio_func *func = dev_to_sdio_func(dev); | |
126 | struct sdio_mmc_card *card; | |
127 | struct mwifiex_adapter *adapter; | |
128 | mmc_pm_flag_t pm_flag = 0; | |
129 | ||
130 | if (func) { | |
131 | pm_flag = sdio_get_host_pm_caps(func); | |
132 | card = sdio_get_drvdata(func); | |
133 | if (!card || !card->adapter) { | |
134 | pr_err("resume: invalid card or adapter\n"); | |
135 | return 0; | |
136 | } | |
137 | } else { | |
138 | pr_err("resume: sdio_func is not specified\n"); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | adapter = card->adapter; | |
143 | ||
144 | if (!adapter->is_suspended) { | |
145 | dev_warn(adapter->dev, "device already resumed\n"); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | adapter->is_suspended = false; | |
150 | ||
151 | /* Disable Host Sleep */ | |
152 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
153 | MWIFIEX_ASYNC_CMD); | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
5e6e3a92 BZ |
158 | /* |
159 | * SDIO remove. | |
160 | * | |
161 | * This function removes the interface and frees up the card structure. | |
162 | */ | |
163 | static void | |
164 | mwifiex_sdio_remove(struct sdio_func *func) | |
165 | { | |
166 | struct sdio_mmc_card *card; | |
287546df | 167 | struct mwifiex_adapter *adapter; |
5dbd326c | 168 | struct mwifiex_private *priv; |
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 | ||
848819f4 | 187 | mwifiex_deauthenticate_all(adapter); |
287546df | 188 | |
5dbd326c YAP |
189 | priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); |
190 | mwifiex_disable_auto_ds(priv); | |
191 | mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); | |
5e6e3a92 | 192 | } |
287546df AK |
193 | |
194 | mwifiex_remove_card(card->adapter, &add_remove_card_sem); | |
5e6e3a92 BZ |
195 | } |
196 | ||
197 | /* | |
198 | * SDIO suspend. | |
199 | * | |
200 | * Kernel needs to suspend all functions separately. Therefore all | |
201 | * registered functions must have drivers with suspend and resume | |
202 | * methods. Failing that the kernel simply removes the whole card. | |
203 | * | |
204 | * If already not suspended, this function allocates and sends a host | |
205 | * sleep activate request to the firmware and turns off the traffic. | |
206 | */ | |
207 | static int mwifiex_sdio_suspend(struct device *dev) | |
208 | { | |
209 | struct sdio_func *func = dev_to_sdio_func(dev); | |
210 | struct sdio_mmc_card *card; | |
270e58e8 | 211 | struct mwifiex_adapter *adapter; |
5e6e3a92 | 212 | mmc_pm_flag_t pm_flag = 0; |
5e6e3a92 BZ |
213 | int ret = 0; |
214 | ||
215 | if (func) { | |
216 | pm_flag = sdio_get_host_pm_caps(func); | |
217 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", | |
5dbd326c | 218 | sdio_func_id(func), pm_flag); |
5e6e3a92 BZ |
219 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { |
220 | pr_err("%s: cannot remain alive while host is" | |
221 | " suspended\n", sdio_func_id(func)); | |
222 | return -ENOSYS; | |
223 | } | |
224 | ||
225 | card = sdio_get_drvdata(func); | |
226 | if (!card || !card->adapter) { | |
227 | pr_err("suspend: invalid card or adapter\n"); | |
228 | return 0; | |
229 | } | |
230 | } else { | |
231 | pr_err("suspend: sdio_func is not specified\n"); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | adapter = card->adapter; | |
236 | ||
237 | /* Enable the Host Sleep */ | |
dd321acd BZ |
238 | if (!mwifiex_enable_hs(adapter)) { |
239 | dev_err(adapter->dev, "cmd: failed to suspend\n"); | |
240 | return -EFAULT; | |
5e6e3a92 BZ |
241 | } |
242 | ||
dd321acd BZ |
243 | dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n"); |
244 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
245 | ||
5e6e3a92 BZ |
246 | /* Indicate device suspended */ |
247 | adapter->is_suspended = true; | |
248 | ||
5e6e3a92 BZ |
249 | return ret; |
250 | } | |
251 | ||
98e6b9df W |
252 | /* Device ID for SD8786 */ |
253 | #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) | |
5e6e3a92 BZ |
254 | /* Device ID for SD8787 */ |
255 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) | |
e3bea1c8 BZ |
256 | /* Device ID for SD8797 */ |
257 | #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) | |
b60186f8 YAP |
258 | /* Device ID for SD8897 */ |
259 | #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) | |
5e6e3a92 BZ |
260 | |
261 | /* WLAN IDs */ | |
262 | static const struct sdio_device_id mwifiex_ids[] = { | |
05889f82 AK |
263 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), |
264 | .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, | |
265 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), | |
266 | .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, | |
267 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), | |
268 | .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, | |
b60186f8 YAP |
269 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), |
270 | .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, | |
5e6e3a92 BZ |
271 | {}, |
272 | }; | |
273 | ||
274 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); | |
275 | ||
276 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { | |
277 | .suspend = mwifiex_sdio_suspend, | |
278 | .resume = mwifiex_sdio_resume, | |
279 | }; | |
280 | ||
281 | static struct sdio_driver mwifiex_sdio = { | |
282 | .name = "mwifiex_sdio", | |
283 | .id_table = mwifiex_ids, | |
284 | .probe = mwifiex_sdio_probe, | |
285 | .remove = mwifiex_sdio_remove, | |
286 | .drv = { | |
287 | .owner = THIS_MODULE, | |
288 | .pm = &mwifiex_sdio_pm_ops, | |
289 | } | |
290 | }; | |
291 | ||
232fde06 DD |
292 | /* Write data into SDIO card register. Caller claims SDIO device. */ |
293 | static int | |
294 | mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) | |
295 | { | |
296 | int ret = -1; | |
297 | sdio_writeb(func, data, reg, &ret); | |
298 | return ret; | |
299 | } | |
300 | ||
5e6e3a92 BZ |
301 | /* |
302 | * This function writes data into SDIO card register. | |
303 | */ | |
304 | static int | |
ab93d4ff | 305 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) |
5e6e3a92 BZ |
306 | { |
307 | struct sdio_mmc_card *card = adapter->card; | |
232fde06 | 308 | int ret; |
5e6e3a92 BZ |
309 | |
310 | sdio_claim_host(card->func); | |
232fde06 | 311 | ret = mwifiex_write_reg_locked(card->func, reg, data); |
5e6e3a92 BZ |
312 | sdio_release_host(card->func); |
313 | ||
314 | return ret; | |
315 | } | |
316 | ||
317 | /* | |
318 | * This function reads data from SDIO card register. | |
319 | */ | |
320 | static int | |
ab93d4ff | 321 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) |
5e6e3a92 BZ |
322 | { |
323 | struct sdio_mmc_card *card = adapter->card; | |
324 | int ret = -1; | |
325 | u8 val; | |
326 | ||
327 | sdio_claim_host(card->func); | |
328 | val = sdio_readb(card->func, reg, &ret); | |
329 | sdio_release_host(card->func); | |
330 | ||
331 | *data = val; | |
332 | ||
333 | return ret; | |
334 | } | |
335 | ||
336 | /* | |
337 | * This function writes multiple data into SDIO card memory. | |
338 | * | |
339 | * This does not work in suspended mode. | |
340 | */ | |
341 | static int | |
342 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, | |
572e8f3e | 343 | u8 *buffer, u32 pkt_len, u32 port) |
5e6e3a92 BZ |
344 | { |
345 | struct sdio_mmc_card *card = adapter->card; | |
5b2e2ecc | 346 | int ret; |
5e6e3a92 BZ |
347 | u8 blk_mode = |
348 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
349 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
350 | u32 blk_cnt = | |
351 | (blk_mode == | |
352 | BLOCK_MODE) ? (pkt_len / | |
353 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; | |
354 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
355 | ||
356 | if (adapter->is_suspended) { | |
357 | dev_err(adapter->dev, | |
358 | "%s: not allowed while suspended\n", __func__); | |
359 | return -1; | |
360 | } | |
361 | ||
362 | sdio_claim_host(card->func); | |
363 | ||
5b2e2ecc | 364 | ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); |
5e6e3a92 BZ |
365 | |
366 | sdio_release_host(card->func); | |
367 | ||
368 | return ret; | |
369 | } | |
370 | ||
371 | /* | |
372 | * This function reads multiple data from SDIO card memory. | |
373 | */ | |
572e8f3e AK |
374 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
375 | u32 len, u32 port, u8 claim) | |
5e6e3a92 BZ |
376 | { |
377 | struct sdio_mmc_card *card = adapter->card; | |
5b2e2ecc | 378 | int ret; |
5dbd326c YAP |
379 | u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE |
380 | : BLOCK_MODE; | |
5e6e3a92 | 381 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
5dbd326c YAP |
382 | u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) |
383 | : len; | |
5e6e3a92 BZ |
384 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
385 | ||
386 | if (claim) | |
387 | sdio_claim_host(card->func); | |
388 | ||
5b2e2ecc | 389 | ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); |
5e6e3a92 BZ |
390 | |
391 | if (claim) | |
392 | sdio_release_host(card->func); | |
393 | ||
394 | return ret; | |
395 | } | |
396 | ||
397 | /* | |
398 | * This function wakes up the card. | |
399 | * | |
400 | * A host power up command is written to the card configuration | |
401 | * register to wake up the card. | |
402 | */ | |
403 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
404 | { | |
5e6e3a92 | 405 | dev_dbg(adapter->dev, "event: wakeup device...\n"); |
5e6e3a92 | 406 | |
636c4598 | 407 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
5e6e3a92 BZ |
408 | } |
409 | ||
410 | /* | |
411 | * This function is called after the card has woken up. | |
412 | * | |
413 | * The card configuration register is reset. | |
414 | */ | |
415 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
416 | { | |
5e6e3a92 | 417 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); |
5e6e3a92 | 418 | |
636c4598 | 419 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
5e6e3a92 BZ |
420 | } |
421 | ||
422 | /* | |
b60186f8 YAP |
423 | * This function is used to initialize IO ports for the |
424 | * chipsets supporting SDIO new mode eg SD8897. | |
425 | */ | |
426 | static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) | |
427 | { | |
428 | u8 reg; | |
429 | ||
430 | adapter->ioport = MEM_PORT; | |
431 | ||
432 | /* enable sdio new mode */ | |
433 | if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, ®)) | |
434 | return -1; | |
435 | if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG, | |
436 | reg | CMD53_NEW_MODE)) | |
437 | return -1; | |
438 | ||
439 | /* Configure cmd port and enable reading rx length from the register */ | |
440 | if (mwifiex_read_reg(adapter, CMD_CONFIG_0, ®)) | |
441 | return -1; | |
442 | if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN)) | |
443 | return -1; | |
444 | ||
445 | /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is | |
446 | * completed | |
447 | */ | |
448 | if (mwifiex_read_reg(adapter, CMD_CONFIG_1, ®)) | |
449 | return -1; | |
450 | if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN)) | |
451 | return -1; | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | /* This function initializes the IO ports. | |
5e6e3a92 BZ |
457 | * |
458 | * The following operations are performed - | |
459 | * - Read the IO ports (0, 1 and 2) | |
460 | * - Set host interrupt Reset-To-Read to clear | |
461 | * - Set auto re-enable interrupt | |
462 | */ | |
463 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) | |
464 | { | |
ab93d4ff | 465 | u8 reg; |
05889f82 | 466 | struct sdio_mmc_card *card = adapter->card; |
5e6e3a92 BZ |
467 | |
468 | adapter->ioport = 0; | |
469 | ||
b60186f8 YAP |
470 | if (card->supports_sdio_new_mode) { |
471 | if (mwifiex_init_sdio_new_mode(adapter)) | |
472 | return -1; | |
473 | goto cont; | |
474 | } | |
475 | ||
5e6e3a92 BZ |
476 | /* Read the IO port */ |
477 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) | |
478 | adapter->ioport |= (reg & 0xff); | |
479 | else | |
480 | return -1; | |
481 | ||
482 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) | |
483 | adapter->ioport |= ((reg & 0xff) << 8); | |
484 | else | |
485 | return -1; | |
486 | ||
487 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) | |
488 | adapter->ioport |= ((reg & 0xff) << 16); | |
489 | else | |
490 | return -1; | |
b60186f8 | 491 | cont: |
5e6e3a92 BZ |
492 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); |
493 | ||
494 | /* Set Host interrupt reset to read to clear */ | |
495 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) | |
496 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, | |
05889f82 | 497 | reg | card->reg->sdio_int_mask); |
5e6e3a92 BZ |
498 | else |
499 | return -1; | |
500 | ||
501 | /* Dnld/Upld ready set to auto reset */ | |
05889f82 AK |
502 | if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) |
503 | mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, | |
5e6e3a92 BZ |
504 | reg | AUTO_RE_ENABLE_INT); |
505 | else | |
506 | return -1; | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | /* | |
512 | * This function sends data to the card. | |
513 | */ | |
514 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, | |
515 | u8 *payload, u32 pkt_len, u32 port) | |
516 | { | |
517 | u32 i = 0; | |
270e58e8 | 518 | int ret; |
5e6e3a92 BZ |
519 | |
520 | do { | |
572e8f3e | 521 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
5e6e3a92 BZ |
522 | if (ret) { |
523 | i++; | |
524 | dev_err(adapter->dev, "host_to_card, write iomem" | |
525 | " (%d) failed: %d\n", i, ret); | |
5dbd326c | 526 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
5e6e3a92 BZ |
527 | dev_err(adapter->dev, "write CFG reg failed\n"); |
528 | ||
529 | ret = -1; | |
530 | if (i > MAX_WRITE_IOMEM_RETRY) | |
531 | return ret; | |
532 | } | |
533 | } while (ret == -1); | |
534 | ||
535 | return ret; | |
536 | } | |
537 | ||
538 | /* | |
539 | * This function gets the read port. | |
540 | * | |
541 | * If control port bit is set in MP read bitmap, the control port | |
542 | * is returned, otherwise the current read port is returned and | |
543 | * the value is increased (provided it does not reach the maximum | |
544 | * limit, in which case it is reset to 1) | |
545 | */ | |
546 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) | |
547 | { | |
548 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 549 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5ac253d5 | 550 | u32 rd_bitmap = card->mp_rd_bitmap; |
5e6e3a92 | 551 | |
5ac253d5 | 552 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); |
5e6e3a92 | 553 | |
b60186f8 YAP |
554 | if (card->supports_sdio_new_mode) { |
555 | if (!(rd_bitmap & reg->data_port_mask)) | |
556 | return -1; | |
557 | } else { | |
558 | if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) | |
559 | return -1; | |
560 | } | |
5e6e3a92 | 561 | |
b60186f8 YAP |
562 | if ((card->has_control_mask) && |
563 | (card->mp_rd_bitmap & CTRL_PORT_MASK)) { | |
5ac253d5 | 564 | card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); |
5e6e3a92 | 565 | *port = CTRL_PORT; |
5ac253d5 | 566 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n", |
5dbd326c | 567 | *port, card->mp_rd_bitmap); |
e6a52030 | 568 | return 0; |
5e6e3a92 | 569 | } |
e6a52030 AK |
570 | |
571 | if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) | |
572 | return -1; | |
573 | ||
574 | /* We are now handling the SDIO data ports */ | |
575 | card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); | |
576 | *port = card->curr_rd_port; | |
577 | ||
578 | if (++card->curr_rd_port == card->max_ports) | |
579 | card->curr_rd_port = reg->start_rd_port; | |
580 | ||
581 | dev_dbg(adapter->dev, | |
582 | "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", | |
583 | *port, rd_bitmap, card->mp_rd_bitmap); | |
584 | ||
5e6e3a92 BZ |
585 | return 0; |
586 | } | |
587 | ||
588 | /* | |
589 | * This function gets the write port for data. | |
590 | * | |
591 | * The current write port is returned if available and the value is | |
592 | * increased (provided it does not reach the maximum limit, in which | |
593 | * case it is reset to 1) | |
594 | */ | |
0fc0d43b | 595 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) |
5e6e3a92 BZ |
596 | { |
597 | struct sdio_mmc_card *card = adapter->card; | |
b60186f8 | 598 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5ac253d5 | 599 | u32 wr_bitmap = card->mp_wr_bitmap; |
5e6e3a92 | 600 | |
5ac253d5 | 601 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); |
5e6e3a92 | 602 | |
b60186f8 YAP |
603 | if (card->supports_sdio_new_mode && |
604 | !(wr_bitmap & reg->data_port_mask)) { | |
605 | adapter->data_sent = true; | |
606 | return -EBUSY; | |
607 | } else if (!card->supports_sdio_new_mode && | |
608 | !(wr_bitmap & card->mp_data_port_mask)) { | |
5e6e3a92 | 609 | return -1; |
b60186f8 | 610 | } |
5e6e3a92 BZ |
611 | |
612 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { | |
5ac253d5 | 613 | card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); |
5e6e3a92 | 614 | *port = card->curr_wr_port; |
b60186f8 YAP |
615 | if (((card->supports_sdio_new_mode) && |
616 | (++card->curr_wr_port == card->max_ports)) || | |
617 | ((!card->supports_sdio_new_mode) && | |
618 | (++card->curr_wr_port == card->mp_end_port))) | |
619 | card->curr_wr_port = reg->start_wr_port; | |
5e6e3a92 BZ |
620 | } else { |
621 | adapter->data_sent = true; | |
622 | return -EBUSY; | |
623 | } | |
624 | ||
b60186f8 | 625 | if ((card->has_control_mask) && (*port == CTRL_PORT)) { |
5ac253d5 AK |
626 | dev_err(adapter->dev, |
627 | "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", | |
5dbd326c YAP |
628 | *port, card->curr_wr_port, wr_bitmap, |
629 | card->mp_wr_bitmap); | |
5e6e3a92 BZ |
630 | return -1; |
631 | } | |
632 | ||
5ac253d5 | 633 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", |
5dbd326c | 634 | *port, wr_bitmap, card->mp_wr_bitmap); |
5e6e3a92 BZ |
635 | |
636 | return 0; | |
637 | } | |
638 | ||
639 | /* | |
640 | * This function polls the card status. | |
641 | */ | |
642 | static int | |
643 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) | |
644 | { | |
05889f82 | 645 | struct sdio_mmc_card *card = adapter->card; |
5e6e3a92 | 646 | u32 tries; |
ab93d4ff | 647 | u8 cs; |
5e6e3a92 BZ |
648 | |
649 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
05889f82 | 650 | if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) |
5e6e3a92 BZ |
651 | break; |
652 | else if ((cs & bits) == bits) | |
653 | return 0; | |
654 | ||
e7891ba2 | 655 | usleep_range(10, 20); |
5e6e3a92 BZ |
656 | } |
657 | ||
5dbd326c YAP |
658 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries); |
659 | ||
5e6e3a92 BZ |
660 | return -1; |
661 | } | |
662 | ||
663 | /* | |
664 | * This function reads the firmware status. | |
665 | */ | |
666 | static int | |
667 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) | |
668 | { | |
05889f82 AK |
669 | struct sdio_mmc_card *card = adapter->card; |
670 | const struct mwifiex_sdio_card_reg *reg = card->reg; | |
ab93d4ff | 671 | u8 fws0, fws1; |
5e6e3a92 | 672 | |
05889f82 | 673 | if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) |
5e6e3a92 BZ |
674 | return -1; |
675 | ||
05889f82 | 676 | if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) |
5e6e3a92 BZ |
677 | return -1; |
678 | ||
679 | *dat = (u16) ((fws1 << 8) | fws0); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | /* | |
685 | * This function disables the host interrupt. | |
686 | * | |
687 | * The host interrupt mask is read, the disable bit is reset and | |
688 | * written back to the card host interrupt mask register. | |
689 | */ | |
232fde06 | 690 | static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) |
5e6e3a92 | 691 | { |
232fde06 DD |
692 | struct sdio_mmc_card *card = adapter->card; |
693 | struct sdio_func *func = card->func; | |
5e6e3a92 | 694 | |
232fde06 DD |
695 | sdio_claim_host(func); |
696 | mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0); | |
697 | sdio_release_irq(func); | |
698 | sdio_release_host(func); | |
5e6e3a92 BZ |
699 | } |
700 | ||
2cdf359a AK |
701 | /* |
702 | * This function reads the interrupt status from card. | |
703 | */ | |
704 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) | |
705 | { | |
706 | struct sdio_mmc_card *card = adapter->card; | |
707 | u8 sdio_ireg; | |
708 | unsigned long flags; | |
709 | ||
710 | if (mwifiex_read_data_sync(adapter, card->mp_regs, | |
711 | card->reg->max_mp_regs, | |
712 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { | |
713 | dev_err(adapter->dev, "read mp_regs failed\n"); | |
714 | return; | |
715 | } | |
716 | ||
717 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; | |
718 | if (sdio_ireg) { | |
719 | /* | |
720 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
721 | * For SDIO new mode CMD port interrupts | |
722 | * DN_LD_CMD_PORT_HOST_INT_STATUS and/or | |
723 | * UP_LD_CMD_PORT_HOST_INT_STATUS | |
724 | * Clear the interrupt status register | |
725 | */ | |
726 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); | |
727 | spin_lock_irqsave(&adapter->int_lock, flags); | |
728 | adapter->int_status |= sdio_ireg; | |
729 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
730 | } | |
731 | } | |
732 | ||
733 | /* | |
734 | * SDIO interrupt handler. | |
735 | * | |
736 | * This function reads the interrupt status from firmware and handles | |
737 | * the interrupt in current thread (ksdioirqd) right away. | |
738 | */ | |
739 | static void | |
740 | mwifiex_sdio_interrupt(struct sdio_func *func) | |
741 | { | |
742 | struct mwifiex_adapter *adapter; | |
743 | struct sdio_mmc_card *card; | |
744 | ||
745 | card = sdio_get_drvdata(func); | |
746 | if (!card || !card->adapter) { | |
747 | pr_debug("int: func=%p card=%p adapter=%p\n", | |
748 | func, card, card ? card->adapter : NULL); | |
749 | return; | |
750 | } | |
751 | adapter = card->adapter; | |
752 | ||
753 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) | |
754 | adapter->ps_state = PS_STATE_AWAKE; | |
755 | ||
756 | mwifiex_interrupt_status(adapter); | |
757 | mwifiex_main_process(adapter); | |
758 | } | |
759 | ||
5e6e3a92 BZ |
760 | /* |
761 | * This function enables the host interrupt. | |
762 | * | |
763 | * The host interrupt enable mask is written to the card | |
764 | * host interrupt mask register. | |
765 | */ | |
766 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) | |
767 | { | |
05889f82 | 768 | struct sdio_mmc_card *card = adapter->card; |
232fde06 DD |
769 | struct sdio_func *func = card->func; |
770 | int ret; | |
771 | ||
772 | sdio_claim_host(func); | |
773 | ||
774 | /* Request the SDIO IRQ */ | |
775 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); | |
776 | if (ret) { | |
777 | dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret); | |
778 | goto out; | |
779 | } | |
05889f82 | 780 | |
5e6e3a92 | 781 | /* Simply write the mask to the register */ |
232fde06 DD |
782 | ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, |
783 | card->reg->host_int_enable); | |
784 | if (ret) { | |
5e6e3a92 | 785 | dev_err(adapter->dev, "enable host interrupt failed\n"); |
232fde06 | 786 | sdio_release_irq(func); |
5e6e3a92 | 787 | } |
232fde06 DD |
788 | |
789 | out: | |
790 | sdio_release_host(func); | |
791 | return ret; | |
5e6e3a92 BZ |
792 | } |
793 | ||
794 | /* | |
795 | * This function sends a data buffer to the card. | |
796 | */ | |
797 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, | |
798 | u32 *type, u8 *buffer, | |
799 | u32 npayload, u32 ioport) | |
800 | { | |
270e58e8 | 801 | int ret; |
5e6e3a92 BZ |
802 | u32 nb; |
803 | ||
804 | if (!buffer) { | |
805 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); | |
806 | return -1; | |
807 | } | |
808 | ||
572e8f3e | 809 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
5e6e3a92 BZ |
810 | |
811 | if (ret) { | |
812 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, | |
5dbd326c | 813 | ret); |
5e6e3a92 BZ |
814 | return -1; |
815 | } | |
816 | ||
817 | nb = le16_to_cpu(*(__le16 *) (buffer)); | |
818 | if (nb > npayload) { | |
5dbd326c YAP |
819 | dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n", |
820 | __func__, nb, npayload); | |
5e6e3a92 BZ |
821 | return -1; |
822 | } | |
823 | ||
824 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); | |
825 | ||
826 | return ret; | |
827 | } | |
828 | ||
829 | /* | |
830 | * This function downloads the firmware to the card. | |
831 | * | |
832 | * Firmware is downloaded to the card in blocks. Every block download | |
833 | * is tested for CRC errors, and retried a number of times before | |
834 | * returning failure. | |
835 | */ | |
836 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
837 | struct mwifiex_fw_image *fw) | |
838 | { | |
05889f82 AK |
839 | struct sdio_mmc_card *card = adapter->card; |
840 | const struct mwifiex_sdio_card_reg *reg = card->reg; | |
270e58e8 | 841 | int ret; |
5e6e3a92 BZ |
842 | u8 *firmware = fw->fw_buf; |
843 | u32 firmware_len = fw->fw_len; | |
844 | u32 offset = 0; | |
ab93d4ff | 845 | u8 base0, base1; |
5e6e3a92 BZ |
846 | u8 *fwbuf; |
847 | u16 len = 0; | |
270e58e8 | 848 | u32 txlen, tx_blocks = 0, tries; |
5e6e3a92 BZ |
849 | u32 i = 0; |
850 | ||
851 | if (!firmware_len) { | |
5dbd326c YAP |
852 | dev_err(adapter->dev, |
853 | "firmware image not found! Terminating download\n"); | |
5e6e3a92 BZ |
854 | return -1; |
855 | } | |
856 | ||
857 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", | |
5dbd326c | 858 | firmware_len); |
5e6e3a92 BZ |
859 | |
860 | /* Assume that the allocated buffer is 8-byte aligned */ | |
861 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); | |
0d2e7a5c | 862 | if (!fwbuf) |
b53575ec | 863 | return -ENOMEM; |
5e6e3a92 BZ |
864 | |
865 | /* Perform firmware data transfer */ | |
866 | do { | |
867 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY | |
868 | bits */ | |
869 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | | |
870 | DN_LD_CARD_RDY); | |
871 | if (ret) { | |
872 | dev_err(adapter->dev, "FW download with helper:" | |
5dbd326c | 873 | " poll status timeout @ %d\n", offset); |
5e6e3a92 BZ |
874 | goto done; |
875 | } | |
876 | ||
877 | /* More data? */ | |
878 | if (offset >= firmware_len) | |
879 | break; | |
880 | ||
881 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
05889f82 | 882 | ret = mwifiex_read_reg(adapter, reg->base_0_reg, |
5e6e3a92 BZ |
883 | &base0); |
884 | if (ret) { | |
5dbd326c YAP |
885 | dev_err(adapter->dev, |
886 | "dev BASE0 register read failed: " | |
887 | "base0=%#04X(%d). Terminating dnld\n", | |
888 | base0, base0); | |
5e6e3a92 BZ |
889 | goto done; |
890 | } | |
05889f82 | 891 | ret = mwifiex_read_reg(adapter, reg->base_1_reg, |
5e6e3a92 BZ |
892 | &base1); |
893 | if (ret) { | |
5dbd326c YAP |
894 | dev_err(adapter->dev, |
895 | "dev BASE1 register read failed: " | |
896 | "base1=%#04X(%d). Terminating dnld\n", | |
897 | base1, base1); | |
5e6e3a92 BZ |
898 | goto done; |
899 | } | |
900 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); | |
901 | ||
902 | if (len) | |
903 | break; | |
904 | ||
e7891ba2 | 905 | usleep_range(10, 20); |
5e6e3a92 BZ |
906 | } |
907 | ||
908 | if (!len) { | |
909 | break; | |
910 | } else if (len > MWIFIEX_UPLD_SIZE) { | |
5dbd326c YAP |
911 | dev_err(adapter->dev, |
912 | "FW dnld failed @ %d, invalid length %d\n", | |
913 | offset, len); | |
5e6e3a92 BZ |
914 | ret = -1; |
915 | goto done; | |
916 | } | |
917 | ||
918 | txlen = len; | |
919 | ||
920 | if (len & BIT(0)) { | |
921 | i++; | |
922 | if (i > MAX_WRITE_IOMEM_RETRY) { | |
5dbd326c YAP |
923 | dev_err(adapter->dev, |
924 | "FW dnld failed @ %d, over max retry\n", | |
925 | offset); | |
5e6e3a92 BZ |
926 | ret = -1; |
927 | goto done; | |
928 | } | |
929 | dev_err(adapter->dev, "CRC indicated by the helper:" | |
5dbd326c | 930 | " len = 0x%04X, txlen = %d\n", len, txlen); |
5e6e3a92 BZ |
931 | len &= ~BIT(0); |
932 | /* Setting this to 0 to resend from same offset */ | |
933 | txlen = 0; | |
934 | } else { | |
935 | i = 0; | |
936 | ||
937 | /* Set blocksize to transfer - checking for last | |
938 | block */ | |
939 | if (firmware_len - offset < txlen) | |
940 | txlen = firmware_len - offset; | |
941 | ||
5dbd326c YAP |
942 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) |
943 | / MWIFIEX_SDIO_BLOCK_SIZE; | |
5e6e3a92 BZ |
944 | |
945 | /* Copy payload to buffer */ | |
946 | memmove(fwbuf, &firmware[offset], txlen); | |
947 | } | |
948 | ||
949 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * | |
950 | MWIFIEX_SDIO_BLOCK_SIZE, | |
572e8f3e | 951 | adapter->ioport); |
5e6e3a92 | 952 | if (ret) { |
5dbd326c YAP |
953 | dev_err(adapter->dev, |
954 | "FW download, write iomem (%d) failed @ %d\n", | |
955 | i, offset); | |
5e6e3a92 BZ |
956 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
957 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
958 | ||
959 | ret = -1; | |
960 | goto done; | |
961 | } | |
962 | ||
963 | offset += txlen; | |
964 | } while (true); | |
965 | ||
966 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", | |
5dbd326c | 967 | offset); |
5e6e3a92 BZ |
968 | |
969 | ret = 0; | |
970 | done: | |
971 | kfree(fwbuf); | |
972 | return ret; | |
973 | } | |
974 | ||
975 | /* | |
976 | * This function checks the firmware status in card. | |
977 | * | |
978 | * The winner interface is also determined by this function. | |
979 | */ | |
980 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, | |
d930faee | 981 | u32 poll_num) |
5e6e3a92 | 982 | { |
05889f82 | 983 | struct sdio_mmc_card *card = adapter->card; |
5e6e3a92 BZ |
984 | int ret = 0; |
985 | u16 firmware_stat; | |
986 | u32 tries; | |
ab93d4ff | 987 | u8 winner_status; |
5e6e3a92 BZ |
988 | |
989 | /* Wait for firmware initialization event */ | |
990 | for (tries = 0; tries < poll_num; tries++) { | |
991 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); | |
992 | if (ret) | |
993 | continue; | |
d930faee | 994 | if (firmware_stat == FIRMWARE_READY_SDIO) { |
5e6e3a92 BZ |
995 | ret = 0; |
996 | break; | |
997 | } else { | |
a76b20e5 | 998 | msleep(100); |
5e6e3a92 BZ |
999 | ret = -1; |
1000 | } | |
1001 | } | |
1002 | ||
d930faee | 1003 | if (ret) { |
5e6e3a92 | 1004 | if (mwifiex_read_reg |
05889f82 | 1005 | (adapter, card->reg->status_reg_0, &winner_status)) |
5e6e3a92 BZ |
1006 | winner_status = 0; |
1007 | ||
1008 | if (winner_status) | |
d930faee | 1009 | adapter->winner = 0; |
5e6e3a92 | 1010 | else |
d930faee | 1011 | adapter->winner = 1; |
5e6e3a92 BZ |
1012 | } |
1013 | return ret; | |
1014 | } | |
1015 | ||
5e6e3a92 BZ |
1016 | /* |
1017 | * This function decodes a received packet. | |
1018 | * | |
1019 | * Based on the type, the packet is treated as either a data, or | |
1020 | * a command response, or an event, and the correct handler | |
1021 | * function is invoked. | |
1022 | */ | |
1023 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, | |
1024 | struct sk_buff *skb, u32 upld_typ) | |
1025 | { | |
1026 | u8 *cmd_buf; | |
d03b4aa7 AP |
1027 | __le16 *curr_ptr = (__le16 *)skb->data; |
1028 | u16 pkt_len = le16_to_cpu(*curr_ptr); | |
5e6e3a92 | 1029 | |
d03b4aa7 | 1030 | skb_trim(skb, pkt_len); |
5e6e3a92 BZ |
1031 | skb_pull(skb, INTF_HEADER_LEN); |
1032 | ||
1033 | switch (upld_typ) { | |
1034 | case MWIFIEX_TYPE_DATA: | |
1035 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); | |
1036 | mwifiex_handle_rx_packet(adapter, skb); | |
1037 | break; | |
1038 | ||
1039 | case MWIFIEX_TYPE_CMD: | |
1040 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); | |
1041 | /* take care of curr_cmd = NULL case */ | |
1042 | if (!adapter->curr_cmd) { | |
1043 | cmd_buf = adapter->upld_buf; | |
1044 | ||
1045 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) | |
1046 | mwifiex_process_sleep_confirm_resp(adapter, | |
5dbd326c YAP |
1047 | skb->data, |
1048 | skb->len); | |
5e6e3a92 | 1049 | |
5dbd326c YAP |
1050 | memcpy(cmd_buf, skb->data, |
1051 | min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, | |
1052 | skb->len)); | |
5e6e3a92 BZ |
1053 | |
1054 | dev_kfree_skb_any(skb); | |
1055 | } else { | |
1056 | adapter->cmd_resp_received = true; | |
1057 | adapter->curr_cmd->resp_skb = skb; | |
1058 | } | |
1059 | break; | |
1060 | ||
1061 | case MWIFIEX_TYPE_EVENT: | |
1062 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); | |
cfcd926e | 1063 | adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data); |
5e6e3a92 | 1064 | |
5e6e3a92 | 1065 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) |
e80c81dc AK |
1066 | memcpy(adapter->event_body, |
1067 | skb->data + MWIFIEX_EVENT_HEADER_LEN, | |
1068 | skb->len); | |
5e6e3a92 BZ |
1069 | |
1070 | /* event cause has been saved to adapter->event_cause */ | |
1071 | adapter->event_received = true; | |
1072 | adapter->event_skb = skb; | |
1073 | ||
1074 | break; | |
1075 | ||
1076 | default: | |
1077 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); | |
1078 | dev_kfree_skb_any(skb); | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | return 0; | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * This function transfers received packets from card to driver, performing | |
1087 | * aggregation if required. | |
1088 | * | |
1089 | * For data received on control port, or if aggregation is disabled, the | |
1090 | * received buffers are uploaded as separate packets. However, if aggregation | |
1091 | * is enabled and required, the buffers are copied onto an aggregation buffer, | |
1092 | * provided there is space left, processed and finally uploaded. | |
1093 | */ | |
1094 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, | |
1095 | struct sk_buff *skb, u8 port) | |
1096 | { | |
1097 | struct sdio_mmc_card *card = adapter->card; | |
1098 | s32 f_do_rx_aggr = 0; | |
1099 | s32 f_do_rx_cur = 0; | |
1100 | s32 f_aggr_cur = 0; | |
1101 | struct sk_buff *skb_deaggr; | |
270e58e8 | 1102 | u32 pind; |
0fc0d43b | 1103 | u32 pkt_len, pkt_type, mport; |
5e6e3a92 BZ |
1104 | u8 *curr_ptr; |
1105 | u32 rx_len = skb->len; | |
1106 | ||
b60186f8 | 1107 | if ((card->has_control_mask) && (port == CTRL_PORT)) { |
5e6e3a92 BZ |
1108 | /* Read the command Resp without aggr */ |
1109 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " | |
5dbd326c | 1110 | "response\n", __func__); |
5e6e3a92 BZ |
1111 | |
1112 | f_do_rx_cur = 1; | |
1113 | goto rx_curr_single; | |
1114 | } | |
1115 | ||
1116 | if (!card->mpa_rx.enabled) { | |
1117 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", | |
5dbd326c | 1118 | __func__); |
5e6e3a92 BZ |
1119 | |
1120 | f_do_rx_cur = 1; | |
1121 | goto rx_curr_single; | |
1122 | } | |
1123 | ||
b60186f8 YAP |
1124 | if ((!card->has_control_mask && (card->mp_rd_bitmap & |
1125 | card->reg->data_port_mask)) || | |
1126 | (card->has_control_mask && (card->mp_rd_bitmap & | |
1127 | (~((u32) CTRL_PORT_MASK))))) { | |
5e6e3a92 BZ |
1128 | /* Some more data RX pending */ |
1129 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); | |
1130 | ||
1131 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1132 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { | |
1133 | f_aggr_cur = 1; | |
1134 | } else { | |
1135 | /* No room in Aggr buf, do rx aggr now */ | |
1136 | f_do_rx_aggr = 1; | |
1137 | f_do_rx_cur = 1; | |
1138 | } | |
1139 | } else { | |
1140 | /* Rx aggr not in progress */ | |
1141 | f_aggr_cur = 1; | |
1142 | } | |
1143 | ||
1144 | } else { | |
1145 | /* No more data RX pending */ | |
1146 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); | |
1147 | ||
1148 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1149 | f_do_rx_aggr = 1; | |
1150 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) | |
1151 | f_aggr_cur = 1; | |
1152 | else | |
1153 | /* No room in Aggr buf, do rx aggr now */ | |
1154 | f_do_rx_cur = 1; | |
1155 | } else { | |
1156 | f_do_rx_cur = 1; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | if (f_aggr_cur) { | |
1161 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); | |
1162 | /* Curr pkt can be aggregated */ | |
c23b7c8f | 1163 | mp_rx_aggr_setup(card, skb, port); |
5e6e3a92 BZ |
1164 | |
1165 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || | |
c23b7c8f | 1166 | mp_rx_aggr_port_limit_reached(card)) { |
5e6e3a92 | 1167 | dev_dbg(adapter->dev, "info: %s: aggregated packet " |
5dbd326c | 1168 | "limit reached\n", __func__); |
5e6e3a92 BZ |
1169 | /* No more pkts allowed in Aggr buf, rx it */ |
1170 | f_do_rx_aggr = 1; | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | if (f_do_rx_aggr) { | |
1175 | /* do aggr RX now */ | |
1176 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", | |
5dbd326c | 1177 | card->mpa_rx.pkt_cnt); |
5e6e3a92 | 1178 | |
b60186f8 YAP |
1179 | if (card->supports_sdio_new_mode) { |
1180 | int i; | |
1181 | u32 port_count; | |
1182 | ||
1183 | for (i = 0, port_count = 0; i < card->max_ports; i++) | |
1184 | if (card->mpa_rx.ports & BIT(i)) | |
1185 | port_count++; | |
1186 | ||
1187 | /* Reading data from "start_port + 0" to "start_port + | |
1188 | * port_count -1", so decrease the count by 1 | |
1189 | */ | |
1190 | port_count--; | |
1191 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1192 | (port_count << 8)) + card->mpa_rx.start_port; | |
1193 | } else { | |
1194 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1195 | (card->mpa_rx.ports << 4)) + | |
1196 | card->mpa_rx.start_port; | |
1197 | } | |
0fc0d43b | 1198 | |
5e6e3a92 | 1199 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, |
0fc0d43b | 1200 | card->mpa_rx.buf_len, mport, 1)) |
17a60b48 | 1201 | goto error; |
5e6e3a92 BZ |
1202 | |
1203 | curr_ptr = card->mpa_rx.buf; | |
1204 | ||
1205 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1206 | ||
1207 | /* get curr PKT len & type */ | |
cfcd926e TW |
1208 | pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]); |
1209 | pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]); | |
5e6e3a92 BZ |
1210 | |
1211 | /* copy pkt to deaggr buf */ | |
1212 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1213 | ||
1214 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= | |
1215 | card->mpa_rx.len_arr[pind])) { | |
1216 | ||
1217 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); | |
1218 | ||
1219 | skb_trim(skb_deaggr, pkt_len); | |
1220 | ||
1221 | /* Process de-aggr packet */ | |
1222 | mwifiex_decode_rx_packet(adapter, skb_deaggr, | |
1223 | pkt_type); | |
1224 | } else { | |
1225 | dev_err(adapter->dev, "wrong aggr pkt:" | |
1226 | " type=%d len=%d max_len=%d\n", | |
1227 | pkt_type, pkt_len, | |
1228 | card->mpa_rx.len_arr[pind]); | |
1229 | dev_kfree_skb_any(skb_deaggr); | |
1230 | } | |
1231 | curr_ptr += card->mpa_rx.len_arr[pind]; | |
1232 | } | |
1233 | MP_RX_AGGR_BUF_RESET(card); | |
1234 | } | |
1235 | ||
1236 | rx_curr_single: | |
1237 | if (f_do_rx_cur) { | |
1238 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", | |
1239 | port, rx_len); | |
1240 | ||
1241 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, | |
1242 | skb->data, skb->len, | |
1243 | adapter->ioport + port)) | |
17a60b48 | 1244 | goto error; |
5e6e3a92 BZ |
1245 | |
1246 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1247 | } | |
1248 | ||
1249 | return 0; | |
17a60b48 AP |
1250 | |
1251 | error: | |
1252 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1253 | /* Multiport-aggregation transfer failed - cleanup */ | |
1254 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1255 | /* copy pkt to deaggr buf */ | |
1256 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1257 | dev_kfree_skb_any(skb_deaggr); | |
1258 | } | |
1259 | MP_RX_AGGR_BUF_RESET(card); | |
1260 | } | |
1261 | ||
1262 | if (f_do_rx_cur) | |
1263 | /* Single transfer pending. Free curr buff also */ | |
1264 | dev_kfree_skb_any(skb); | |
1265 | ||
1266 | return -1; | |
5e6e3a92 BZ |
1267 | } |
1268 | ||
1269 | /* | |
1270 | * This function checks the current interrupt status. | |
1271 | * | |
1272 | * The following interrupts are checked and handled by this function - | |
1273 | * - Data sent | |
1274 | * - Command sent | |
1275 | * - Packets received | |
1276 | * | |
1277 | * Since the firmware does not generate download ready interrupt if the | |
1278 | * port updated is command port only, command sent interrupt checking | |
1279 | * should be done manually, and for every SDIO interrupt. | |
1280 | * | |
1281 | * In case of Rx packets received, the packets are uploaded from card to | |
1282 | * host and processed accordingly. | |
1283 | */ | |
1284 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) | |
1285 | { | |
1286 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 1287 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5e6e3a92 BZ |
1288 | int ret = 0; |
1289 | u8 sdio_ireg; | |
270e58e8 | 1290 | struct sk_buff *skb; |
5e6e3a92 BZ |
1291 | u8 port = CTRL_PORT; |
1292 | u32 len_reg_l, len_reg_u; | |
1293 | u32 rx_blocks; | |
1294 | u16 rx_len; | |
1295 | unsigned long flags; | |
b60186f8 YAP |
1296 | u32 bitmap; |
1297 | u8 cr; | |
5e6e3a92 BZ |
1298 | |
1299 | spin_lock_irqsave(&adapter->int_lock, flags); | |
1300 | sdio_ireg = adapter->int_status; | |
1301 | adapter->int_status = 0; | |
1302 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
1303 | ||
1304 | if (!sdio_ireg) | |
1305 | return ret; | |
1306 | ||
b60186f8 YAP |
1307 | /* Following interrupt is only for SDIO new mode */ |
1308 | if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) | |
1309 | adapter->cmd_sent = false; | |
1310 | ||
1311 | /* Following interrupt is only for SDIO new mode */ | |
1312 | if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { | |
1313 | u32 pkt_type; | |
1314 | ||
1315 | /* read the len of control packet */ | |
1316 | rx_len = card->mp_regs[CMD_RD_LEN_1] << 8; | |
1317 | rx_len |= (u16) card->mp_regs[CMD_RD_LEN_0]; | |
1318 | rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE); | |
1319 | if (rx_len <= INTF_HEADER_LEN || | |
1320 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1321 | MWIFIEX_RX_DATA_BUF_SIZE) | |
1322 | return -1; | |
1323 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1324 | ||
1325 | skb = dev_alloc_skb(rx_len); | |
1326 | if (!skb) | |
1327 | return -1; | |
1328 | ||
1329 | skb_put(skb, rx_len); | |
1330 | ||
1331 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data, | |
1332 | skb->len, adapter->ioport | | |
1333 | CMD_PORT_SLCT)) { | |
1334 | dev_err(adapter->dev, | |
1335 | "%s: failed to card_to_host", __func__); | |
1336 | dev_kfree_skb_any(skb); | |
1337 | goto term_cmd; | |
1338 | } | |
1339 | ||
1340 | if ((pkt_type != MWIFIEX_TYPE_CMD) && | |
1341 | (pkt_type != MWIFIEX_TYPE_EVENT)) | |
1342 | dev_err(adapter->dev, | |
1343 | "%s:Received wrong packet on cmd port", | |
1344 | __func__); | |
1345 | ||
1346 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1347 | } | |
1348 | ||
5e6e3a92 | 1349 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { |
b60186f8 YAP |
1350 | bitmap = (u32) card->mp_regs[reg->wr_bitmap_l]; |
1351 | bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8; | |
1352 | if (card->supports_sdio_new_mode) { | |
1353 | bitmap |= | |
1354 | ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16; | |
1355 | bitmap |= | |
1356 | ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24; | |
1357 | } | |
1358 | card->mp_wr_bitmap = bitmap; | |
1359 | ||
1360 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n", | |
5dbd326c | 1361 | card->mp_wr_bitmap); |
5e6e3a92 BZ |
1362 | if (adapter->data_sent && |
1363 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { | |
1364 | dev_dbg(adapter->dev, | |
1365 | "info: <--- Tx DONE Interrupt --->\n"); | |
1366 | adapter->data_sent = false; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | /* As firmware will not generate download ready interrupt if the port | |
1371 | updated is command port only, cmd_sent should be done for any SDIO | |
1372 | interrupt. */ | |
b60186f8 | 1373 | if (card->has_control_mask && adapter->cmd_sent) { |
5e6e3a92 BZ |
1374 | /* Check if firmware has attach buffer at command port and |
1375 | update just that in wr_bit_map. */ | |
1376 | card->mp_wr_bitmap |= | |
05889f82 | 1377 | (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK; |
5e6e3a92 BZ |
1378 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) |
1379 | adapter->cmd_sent = false; | |
1380 | } | |
1381 | ||
1382 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", | |
5dbd326c | 1383 | adapter->cmd_sent, adapter->data_sent); |
5e6e3a92 | 1384 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { |
b60186f8 YAP |
1385 | bitmap = (u32) card->mp_regs[reg->rd_bitmap_l]; |
1386 | bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8; | |
1387 | if (card->supports_sdio_new_mode) { | |
1388 | bitmap |= | |
1389 | ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16; | |
1390 | bitmap |= | |
1391 | ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24; | |
1392 | } | |
1393 | card->mp_rd_bitmap = bitmap; | |
1394 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n", | |
5dbd326c | 1395 | card->mp_rd_bitmap); |
5e6e3a92 BZ |
1396 | |
1397 | while (true) { | |
1398 | ret = mwifiex_get_rd_port(adapter, &port); | |
1399 | if (ret) { | |
1400 | dev_dbg(adapter->dev, | |
1401 | "info: no more rd_port available\n"); | |
1402 | break; | |
1403 | } | |
05889f82 AK |
1404 | len_reg_l = reg->rd_len_p0_l + (port << 1); |
1405 | len_reg_u = reg->rd_len_p0_u + (port << 1); | |
5e6e3a92 BZ |
1406 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; |
1407 | rx_len |= (u16) card->mp_regs[len_reg_l]; | |
1408 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", | |
5dbd326c | 1409 | port, rx_len); |
5e6e3a92 BZ |
1410 | rx_blocks = |
1411 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - | |
1412 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
5dbd326c YAP |
1413 | if (rx_len <= INTF_HEADER_LEN || |
1414 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1415 | MWIFIEX_RX_DATA_BUF_SIZE) { | |
5e6e3a92 | 1416 | dev_err(adapter->dev, "invalid rx_len=%d\n", |
5dbd326c | 1417 | rx_len); |
5e6e3a92 BZ |
1418 | return -1; |
1419 | } | |
1420 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1421 | ||
1422 | skb = dev_alloc_skb(rx_len); | |
1423 | ||
1424 | if (!skb) { | |
1425 | dev_err(adapter->dev, "%s: failed to alloc skb", | |
5dbd326c | 1426 | __func__); |
5e6e3a92 BZ |
1427 | return -1; |
1428 | } | |
1429 | ||
1430 | skb_put(skb, rx_len); | |
1431 | ||
1432 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", | |
5dbd326c | 1433 | rx_len, skb->len); |
5e6e3a92 BZ |
1434 | |
1435 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, | |
1436 | port)) { | |
5e6e3a92 | 1437 | dev_err(adapter->dev, "card_to_host_mpa failed:" |
5dbd326c | 1438 | " int status=%#x\n", sdio_ireg); |
b60186f8 | 1439 | goto term_cmd; |
5e6e3a92 BZ |
1440 | } |
1441 | } | |
1442 | } | |
1443 | ||
1444 | return 0; | |
b60186f8 YAP |
1445 | |
1446 | term_cmd: | |
1447 | /* terminate cmd */ | |
1448 | if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) | |
1449 | dev_err(adapter->dev, "read CFG reg failed\n"); | |
1450 | else | |
1451 | dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr); | |
1452 | ||
1453 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) | |
1454 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
1455 | else | |
1456 | dev_dbg(adapter->dev, "info: write success\n"); | |
1457 | ||
1458 | if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) | |
1459 | dev_err(adapter->dev, "read CFG reg failed\n"); | |
1460 | else | |
1461 | dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr); | |
1462 | ||
1463 | return -1; | |
5e6e3a92 BZ |
1464 | } |
1465 | ||
1466 | /* | |
1467 | * This function aggregates transmission buffers in driver and downloads | |
1468 | * the aggregated packet to card. | |
1469 | * | |
1470 | * The individual packets are aggregated by copying into an aggregation | |
1471 | * buffer and then downloaded to the card. Previous unsent packets in the | |
1472 | * aggregation buffer are pre-copied first before new packets are added. | |
1473 | * Aggregation is done till there is space left in the aggregation buffer, | |
1474 | * or till new packets are available. | |
1475 | * | |
1476 | * The function will only download the packet to the card when aggregation | |
1477 | * stops, otherwise it will just aggregate the packet in aggregation buffer | |
1478 | * and return. | |
1479 | */ | |
1480 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, | |
0fc0d43b | 1481 | u8 *payload, u32 pkt_len, u32 port, |
5e6e3a92 BZ |
1482 | u32 next_pkt_len) |
1483 | { | |
1484 | struct sdio_mmc_card *card = adapter->card; | |
1485 | int ret = 0; | |
1486 | s32 f_send_aggr_buf = 0; | |
1487 | s32 f_send_cur_buf = 0; | |
1488 | s32 f_precopy_cur_buf = 0; | |
1489 | s32 f_postcopy_cur_buf = 0; | |
0fc0d43b | 1490 | u32 mport; |
5e6e3a92 | 1491 | |
b60186f8 YAP |
1492 | if (!card->mpa_tx.enabled || |
1493 | (card->has_control_mask && (port == CTRL_PORT)) || | |
1494 | (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) { | |
5e6e3a92 | 1495 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", |
5dbd326c | 1496 | __func__); |
5e6e3a92 BZ |
1497 | |
1498 | f_send_cur_buf = 1; | |
1499 | goto tx_curr_single; | |
1500 | } | |
1501 | ||
1502 | if (next_pkt_len) { | |
1503 | /* More pkt in TX queue */ | |
1504 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", | |
5dbd326c | 1505 | __func__); |
5e6e3a92 BZ |
1506 | |
1507 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
c23b7c8f | 1508 | if (!mp_tx_aggr_port_limit_reached(card) && |
5e6e3a92 BZ |
1509 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { |
1510 | f_precopy_cur_buf = 1; | |
1511 | ||
1512 | if (!(card->mp_wr_bitmap & | |
5dbd326c YAP |
1513 | (1 << card->curr_wr_port)) || |
1514 | !MP_TX_AGGR_BUF_HAS_ROOM( | |
1515 | card, pkt_len + next_pkt_len)) | |
5e6e3a92 BZ |
1516 | f_send_aggr_buf = 1; |
1517 | } else { | |
1518 | /* No room in Aggr buf, send it */ | |
1519 | f_send_aggr_buf = 1; | |
1520 | ||
c23b7c8f | 1521 | if (mp_tx_aggr_port_limit_reached(card) || |
5e6e3a92 BZ |
1522 | !(card->mp_wr_bitmap & |
1523 | (1 << card->curr_wr_port))) | |
1524 | f_send_cur_buf = 1; | |
1525 | else | |
1526 | f_postcopy_cur_buf = 1; | |
1527 | } | |
1528 | } else { | |
5dbd326c YAP |
1529 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && |
1530 | (card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
5e6e3a92 BZ |
1531 | f_precopy_cur_buf = 1; |
1532 | else | |
1533 | f_send_cur_buf = 1; | |
1534 | } | |
1535 | } else { | |
1536 | /* Last pkt in TX queue */ | |
1537 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", | |
5dbd326c | 1538 | __func__); |
5e6e3a92 BZ |
1539 | |
1540 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1541 | /* some packs in Aggr buf already */ | |
1542 | f_send_aggr_buf = 1; | |
1543 | ||
1544 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) | |
1545 | f_precopy_cur_buf = 1; | |
1546 | else | |
1547 | /* No room in Aggr buf, send it */ | |
1548 | f_send_cur_buf = 1; | |
1549 | } else { | |
1550 | f_send_cur_buf = 1; | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | if (f_precopy_cur_buf) { | |
1555 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", | |
5dbd326c | 1556 | __func__); |
5e6e3a92 BZ |
1557 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1558 | ||
1559 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || | |
c23b7c8f | 1560 | mp_tx_aggr_port_limit_reached(card)) |
5e6e3a92 BZ |
1561 | /* No more pkts allowed in Aggr buf, send it */ |
1562 | f_send_aggr_buf = 1; | |
1563 | } | |
1564 | ||
1565 | if (f_send_aggr_buf) { | |
1566 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", | |
5dbd326c | 1567 | __func__, |
5e6e3a92 | 1568 | card->mpa_tx.start_port, card->mpa_tx.ports); |
b60186f8 YAP |
1569 | if (card->supports_sdio_new_mode) { |
1570 | u32 port_count; | |
1571 | int i; | |
1572 | ||
1573 | for (i = 0, port_count = 0; i < card->max_ports; i++) | |
1574 | if (card->mpa_tx.ports & BIT(i)) | |
1575 | port_count++; | |
1576 | ||
1577 | /* Writing data from "start_port + 0" to "start_port + | |
1578 | * port_count -1", so decrease the count by 1 | |
1579 | */ | |
1580 | port_count--; | |
1581 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1582 | (port_count << 8)) + card->mpa_tx.start_port; | |
1583 | } else { | |
1584 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | | |
1585 | (card->mpa_tx.ports << 4)) + | |
1586 | card->mpa_tx.start_port; | |
1587 | } | |
1588 | ||
5e6e3a92 | 1589 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, |
0fc0d43b | 1590 | card->mpa_tx.buf_len, mport); |
5e6e3a92 BZ |
1591 | |
1592 | MP_TX_AGGR_BUF_RESET(card); | |
1593 | } | |
1594 | ||
1595 | tx_curr_single: | |
1596 | if (f_send_cur_buf) { | |
1597 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", | |
5dbd326c | 1598 | __func__, port); |
5e6e3a92 BZ |
1599 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, |
1600 | adapter->ioport + port); | |
1601 | } | |
1602 | ||
1603 | if (f_postcopy_cur_buf) { | |
1604 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", | |
5dbd326c | 1605 | __func__); |
5e6e3a92 BZ |
1606 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1607 | } | |
1608 | ||
1609 | return ret; | |
1610 | } | |
1611 | ||
1612 | /* | |
1613 | * This function downloads data from driver to card. | |
1614 | * | |
1615 | * Both commands and data packets are transferred to the card by this | |
1616 | * function. | |
1617 | * | |
1618 | * This function adds the SDIO specific header to the front of the buffer | |
1619 | * before transferring. The header contains the length of the packet and | |
1620 | * the type. The firmware handles the packets based upon this set type. | |
1621 | */ | |
1622 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, | |
d930faee | 1623 | u8 type, struct sk_buff *skb, |
5e6e3a92 BZ |
1624 | struct mwifiex_tx_param *tx_param) |
1625 | { | |
1626 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 1627 | int ret; |
5e6e3a92 BZ |
1628 | u32 buf_block_len; |
1629 | u32 blk_size; | |
0fc0d43b | 1630 | u32 port = CTRL_PORT; |
d930faee AK |
1631 | u8 *payload = (u8 *)skb->data; |
1632 | u32 pkt_len = skb->len; | |
5e6e3a92 BZ |
1633 | |
1634 | /* Allocate buffer and copy payload */ | |
1635 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; | |
1636 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; | |
83e612f6 TM |
1637 | *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len); |
1638 | *(__le16 *)&payload[2] = cpu_to_le16(type); | |
5e6e3a92 BZ |
1639 | |
1640 | /* | |
1641 | * This is SDIO specific header | |
1642 | * u16 length, | |
1643 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, | |
1644 | * MWIFIEX_TYPE_EVENT = 3) | |
1645 | */ | |
1646 | if (type == MWIFIEX_TYPE_DATA) { | |
1647 | ret = mwifiex_get_wr_port_data(adapter, &port); | |
1648 | if (ret) { | |
1649 | dev_err(adapter->dev, "%s: no wr_port available\n", | |
5dbd326c | 1650 | __func__); |
5e6e3a92 BZ |
1651 | return ret; |
1652 | } | |
1653 | } else { | |
1654 | adapter->cmd_sent = true; | |
1655 | /* Type must be MWIFIEX_TYPE_CMD */ | |
1656 | ||
1657 | if (pkt_len <= INTF_HEADER_LEN || | |
1658 | pkt_len > MWIFIEX_UPLD_SIZE) | |
1659 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", | |
5dbd326c | 1660 | __func__, payload, pkt_len); |
b60186f8 YAP |
1661 | |
1662 | if (card->supports_sdio_new_mode) | |
1663 | port = CMD_PORT_SLCT; | |
5e6e3a92 BZ |
1664 | } |
1665 | ||
1666 | /* Transfer data to card */ | |
1667 | pkt_len = buf_block_len * blk_size; | |
1668 | ||
1669 | if (tx_param) | |
1670 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c YAP |
1671 | port, tx_param->next_pkt_len |
1672 | ); | |
5e6e3a92 BZ |
1673 | else |
1674 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c | 1675 | port, 0); |
5e6e3a92 BZ |
1676 | |
1677 | if (ret) { | |
1678 | if (type == MWIFIEX_TYPE_CMD) | |
1679 | adapter->cmd_sent = false; | |
1680 | if (type == MWIFIEX_TYPE_DATA) | |
1681 | adapter->data_sent = false; | |
1682 | } else { | |
1683 | if (type == MWIFIEX_TYPE_DATA) { | |
1684 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1685 | adapter->data_sent = true; | |
1686 | else | |
1687 | adapter->data_sent = false; | |
1688 | } | |
1689 | } | |
1690 | ||
1691 | return ret; | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * This function allocates the MPA Tx and Rx buffers. | |
1696 | */ | |
1697 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, | |
1698 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) | |
1699 | { | |
1700 | struct sdio_mmc_card *card = adapter->card; | |
1701 | int ret = 0; | |
1702 | ||
1703 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); | |
1704 | if (!card->mpa_tx.buf) { | |
5e6e3a92 BZ |
1705 | ret = -1; |
1706 | goto error; | |
1707 | } | |
1708 | ||
1709 | card->mpa_tx.buf_size = mpa_tx_buf_size; | |
1710 | ||
1711 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); | |
1712 | if (!card->mpa_rx.buf) { | |
5e6e3a92 BZ |
1713 | ret = -1; |
1714 | goto error; | |
1715 | } | |
1716 | ||
1717 | card->mpa_rx.buf_size = mpa_rx_buf_size; | |
1718 | ||
1719 | error: | |
1720 | if (ret) { | |
1721 | kfree(card->mpa_tx.buf); | |
1722 | kfree(card->mpa_rx.buf); | |
1723 | } | |
1724 | ||
1725 | return ret; | |
1726 | } | |
1727 | ||
1728 | /* | |
1729 | * This function unregisters the SDIO device. | |
1730 | * | |
1731 | * The SDIO IRQ is released, the function is disabled and driver | |
1732 | * data is set to null. | |
1733 | */ | |
1734 | static void | |
1735 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1736 | { | |
1737 | struct sdio_mmc_card *card = adapter->card; | |
1738 | ||
1739 | if (adapter->card) { | |
5e6e3a92 | 1740 | sdio_claim_host(card->func); |
5e6e3a92 BZ |
1741 | sdio_disable_func(card->func); |
1742 | sdio_release_host(card->func); | |
5e6e3a92 BZ |
1743 | } |
1744 | } | |
1745 | ||
1746 | /* | |
1747 | * This function registers the SDIO device. | |
1748 | * | |
1749 | * SDIO IRQ is claimed, block size is set and driver data is initialized. | |
1750 | */ | |
1751 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1752 | { | |
232fde06 | 1753 | int ret; |
5e6e3a92 BZ |
1754 | struct sdio_mmc_card *card = adapter->card; |
1755 | struct sdio_func *func = card->func; | |
1756 | ||
1757 | /* save adapter pointer in card */ | |
1758 | card->adapter = adapter; | |
828cf222 | 1759 | adapter->tx_buf_size = card->tx_buf_size; |
5e6e3a92 BZ |
1760 | |
1761 | sdio_claim_host(func); | |
1762 | ||
5e6e3a92 BZ |
1763 | /* Set block size */ |
1764 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); | |
232fde06 | 1765 | sdio_release_host(func); |
5e6e3a92 BZ |
1766 | if (ret) { |
1767 | pr_err("cannot set SDIO block size\n"); | |
232fde06 | 1768 | return ret; |
5e6e3a92 BZ |
1769 | } |
1770 | ||
5e6e3a92 BZ |
1771 | |
1772 | adapter->dev = &func->dev; | |
e3bea1c8 | 1773 | |
05889f82 | 1774 | strcpy(adapter->fw_name, card->firmware); |
5e6e3a92 BZ |
1775 | |
1776 | return 0; | |
5e6e3a92 BZ |
1777 | } |
1778 | ||
1779 | /* | |
1780 | * This function initializes the SDIO driver. | |
1781 | * | |
1782 | * The following initializations steps are followed - | |
1783 | * - Read the Host interrupt status register to acknowledge | |
1784 | * the first interrupt got from bootloader | |
1785 | * - Disable host interrupt mask register | |
1786 | * - Get SDIO port | |
5e6e3a92 BZ |
1787 | * - Initialize SDIO variables in card |
1788 | * - Allocate MP registers | |
1789 | * - Allocate MPA Tx and Rx buffers | |
1790 | */ | |
1791 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) | |
1792 | { | |
1793 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 1794 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5e6e3a92 | 1795 | int ret; |
ab93d4ff | 1796 | u8 sdio_ireg; |
5e6e3a92 | 1797 | |
3c59e328 AK |
1798 | sdio_set_drvdata(card->func, card); |
1799 | ||
5e6e3a92 BZ |
1800 | /* |
1801 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got | |
1802 | * from the bootloader. If we don't do this we get a interrupt | |
1803 | * as soon as we register the irq. | |
1804 | */ | |
1805 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); | |
1806 | ||
5e6e3a92 BZ |
1807 | /* Get SDIO ioport */ |
1808 | mwifiex_init_sdio_ioport(adapter); | |
1809 | ||
5e6e3a92 BZ |
1810 | /* Initialize SDIO variables in card */ |
1811 | card->mp_rd_bitmap = 0; | |
1812 | card->mp_wr_bitmap = 0; | |
05889f82 AK |
1813 | card->curr_rd_port = reg->start_rd_port; |
1814 | card->curr_wr_port = reg->start_wr_port; | |
5e6e3a92 | 1815 | |
05889f82 | 1816 | card->mp_data_port_mask = reg->data_port_mask; |
5e6e3a92 BZ |
1817 | |
1818 | card->mpa_tx.buf_len = 0; | |
1819 | card->mpa_tx.pkt_cnt = 0; | |
1820 | card->mpa_tx.start_port = 0; | |
1821 | ||
7d7ab022 | 1822 | card->mpa_tx.enabled = 1; |
05889f82 | 1823 | card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; |
5e6e3a92 BZ |
1824 | |
1825 | card->mpa_rx.buf_len = 0; | |
1826 | card->mpa_rx.pkt_cnt = 0; | |
1827 | card->mpa_rx.start_port = 0; | |
1828 | ||
7d7ab022 | 1829 | card->mpa_rx.enabled = 1; |
05889f82 | 1830 | card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; |
5e6e3a92 BZ |
1831 | |
1832 | /* Allocate buffers for SDIO MP-A */ | |
05889f82 | 1833 | card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); |
0d2e7a5c | 1834 | if (!card->mp_regs) |
b53575ec | 1835 | return -ENOMEM; |
5e6e3a92 | 1836 | |
c23b7c8f AK |
1837 | /* Allocate skb pointer buffers */ |
1838 | card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * | |
1839 | card->mp_agg_pkt_limit, GFP_KERNEL); | |
1840 | card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * | |
1841 | card->mp_agg_pkt_limit, GFP_KERNEL); | |
5e6e3a92 BZ |
1842 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, |
1843 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, | |
1844 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); | |
1845 | if (ret) { | |
1846 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); | |
1847 | kfree(card->mp_regs); | |
1848 | return -1; | |
1849 | } | |
1850 | ||
1851 | return ret; | |
1852 | } | |
1853 | ||
1854 | /* | |
1855 | * This function resets the MPA Tx and Rx buffers. | |
1856 | */ | |
1857 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) | |
1858 | { | |
1859 | struct sdio_mmc_card *card = adapter->card; | |
1860 | ||
1861 | MP_TX_AGGR_BUF_RESET(card); | |
1862 | MP_RX_AGGR_BUF_RESET(card); | |
1863 | } | |
1864 | ||
1865 | /* | |
1866 | * This function cleans up the allocated card buffers. | |
1867 | * | |
1868 | * The following are freed by this function - | |
1869 | * - MP registers | |
1870 | * - MPA Tx buffer | |
1871 | * - MPA Rx buffer | |
1872 | */ | |
1873 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) | |
1874 | { | |
1875 | struct sdio_mmc_card *card = adapter->card; | |
1876 | ||
1877 | kfree(card->mp_regs); | |
c23b7c8f AK |
1878 | kfree(card->mpa_rx.skb_arr); |
1879 | kfree(card->mpa_rx.len_arr); | |
5e6e3a92 BZ |
1880 | kfree(card->mpa_tx.buf); |
1881 | kfree(card->mpa_rx.buf); | |
3c59e328 AK |
1882 | sdio_set_drvdata(card->func, NULL); |
1883 | kfree(card); | |
5e6e3a92 BZ |
1884 | } |
1885 | ||
1886 | /* | |
1887 | * This function updates the MP end port in card. | |
1888 | */ | |
1889 | static void | |
1890 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) | |
1891 | { | |
1892 | struct sdio_mmc_card *card = adapter->card; | |
05889f82 | 1893 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
5e6e3a92 BZ |
1894 | int i; |
1895 | ||
1896 | card->mp_end_port = port; | |
1897 | ||
05889f82 | 1898 | card->mp_data_port_mask = reg->data_port_mask; |
5e6e3a92 | 1899 | |
b60186f8 YAP |
1900 | if (reg->start_wr_port) { |
1901 | for (i = 1; i <= card->max_ports - card->mp_end_port; i++) | |
1902 | card->mp_data_port_mask &= | |
1903 | ~(1 << (card->max_ports - i)); | |
1904 | } | |
5e6e3a92 | 1905 | |
05889f82 | 1906 | card->curr_wr_port = reg->start_wr_port; |
5e6e3a92 BZ |
1907 | |
1908 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", | |
5dbd326c | 1909 | port, card->mp_data_port_mask); |
5e6e3a92 BZ |
1910 | } |
1911 | ||
d31ab357 AK |
1912 | static struct mmc_host *reset_host; |
1913 | static void sdio_card_reset_worker(struct work_struct *work) | |
1914 | { | |
7f5855c9 TH |
1915 | struct mmc_host *target = reset_host; |
1916 | ||
d31ab357 AK |
1917 | /* The actual reset operation must be run outside of driver thread. |
1918 | * This is because mmc_remove_host() will cause the device to be | |
1919 | * instantly destroyed, and the driver then needs to end its thread, | |
1920 | * leading to a deadlock. | |
1921 | * | |
1922 | * We run it in a totally independent workqueue. | |
1923 | */ | |
1924 | ||
1925 | pr_err("Resetting card...\n"); | |
7f5855c9 | 1926 | mmc_remove_host(target); |
d31ab357 AK |
1927 | /* 20ms delay is based on experiment with sdhci controller */ |
1928 | mdelay(20); | |
7f5855c9 | 1929 | mmc_add_host(target); |
d31ab357 AK |
1930 | } |
1931 | static DECLARE_WORK(card_reset_work, sdio_card_reset_worker); | |
1932 | ||
1933 | /* This function resets the card */ | |
1934 | static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) | |
1935 | { | |
1936 | struct sdio_mmc_card *card = adapter->card; | |
1937 | ||
d31ab357 AK |
1938 | reset_host = card->func->card->host; |
1939 | schedule_work(&card_reset_work); | |
1940 | } | |
1941 | ||
5e6e3a92 BZ |
1942 | static struct mwifiex_if_ops sdio_ops = { |
1943 | .init_if = mwifiex_init_sdio, | |
1944 | .cleanup_if = mwifiex_cleanup_sdio, | |
1945 | .check_fw_status = mwifiex_check_fw_status, | |
1946 | .prog_fw = mwifiex_prog_fw_w_helper, | |
1947 | .register_dev = mwifiex_register_dev, | |
1948 | .unregister_dev = mwifiex_unregister_dev, | |
1949 | .enable_int = mwifiex_sdio_enable_host_int, | |
232fde06 | 1950 | .disable_int = mwifiex_sdio_disable_host_int, |
5e6e3a92 BZ |
1951 | .process_int_status = mwifiex_process_int_status, |
1952 | .host_to_card = mwifiex_sdio_host_to_card, | |
1953 | .wakeup = mwifiex_pm_wakeup_card, | |
1954 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1955 | ||
1956 | /* SDIO specific */ | |
1957 | .update_mp_end_port = mwifiex_update_mp_end_port, | |
1958 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, | |
d930faee AK |
1959 | .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, |
1960 | .event_complete = mwifiex_sdio_event_complete, | |
d31ab357 | 1961 | .card_reset = mwifiex_sdio_card_reset, |
5e6e3a92 BZ |
1962 | }; |
1963 | ||
1964 | /* | |
1965 | * This function initializes the SDIO driver. | |
1966 | * | |
1967 | * This initiates the semaphore and registers the device with | |
1968 | * SDIO bus. | |
1969 | */ | |
1970 | static int | |
1971 | mwifiex_sdio_init_module(void) | |
1972 | { | |
5e6e3a92 BZ |
1973 | sema_init(&add_remove_card_sem, 1); |
1974 | ||
287546df AK |
1975 | /* Clear the flag in case user removes the card. */ |
1976 | user_rmmod = 0; | |
1977 | ||
636c4598 | 1978 | return sdio_register_driver(&mwifiex_sdio); |
5e6e3a92 BZ |
1979 | } |
1980 | ||
1981 | /* | |
1982 | * This function cleans up the SDIO driver. | |
1983 | * | |
1984 | * The following major steps are followed for cleanup - | |
1985 | * - Resume the device if its suspended | |
1986 | * - Disconnect the device if connected | |
1987 | * - Shutdown the firmware | |
1988 | * - Unregister the device from SDIO bus. | |
1989 | */ | |
1990 | static void | |
1991 | mwifiex_sdio_cleanup_module(void) | |
1992 | { | |
287546df AK |
1993 | if (!down_interruptible(&add_remove_card_sem)) |
1994 | up(&add_remove_card_sem); | |
5e6e3a92 | 1995 | |
287546df AK |
1996 | /* Set the flag as user is removing this module. */ |
1997 | user_rmmod = 1; | |
5e6e3a92 | 1998 | |
d31ab357 | 1999 | cancel_work_sync(&card_reset_work); |
5e6e3a92 BZ |
2000 | sdio_unregister_driver(&mwifiex_sdio); |
2001 | } | |
2002 | ||
2003 | module_init(mwifiex_sdio_init_module); | |
2004 | module_exit(mwifiex_sdio_cleanup_module); | |
2005 | ||
2006 | MODULE_AUTHOR("Marvell International Ltd."); | |
2007 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); | |
2008 | MODULE_VERSION(SDIO_VERSION); | |
2009 | MODULE_LICENSE("GPL v2"); | |
98e6b9df | 2010 | MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); |
e3bea1c8 BZ |
2011 | MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); |
2012 | MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); | |
b60186f8 | 2013 | MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME); |