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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: SDIO specific handling | |
3 | * | |
4 | * Copyright (C) 2011, Marvell International Ltd. | |
5 | * | |
6 | * This software file (the "File") is distributed by Marvell International | |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 | |
8 | * (the "License"). You may use, redistribute and/or modify this File in | |
9 | * accordance with the terms and conditions of the License, a copy of which | |
10 | * is available by writing to the Free Software Foundation, Inc., | |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the | |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. | |
13 | * | |
14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE | |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE | |
16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about | |
17 | * this warranty disclaimer. | |
18 | */ | |
19 | ||
20 | #include <linux/firmware.h> | |
21 | ||
22 | #include "decl.h" | |
23 | #include "ioctl.h" | |
24 | #include "util.h" | |
25 | #include "fw.h" | |
26 | #include "main.h" | |
27 | #include "wmm.h" | |
28 | #include "11n.h" | |
29 | #include "sdio.h" | |
30 | ||
31 | ||
32 | #define SDIO_VERSION "1.0" | |
33 | ||
287546df AK |
34 | /* The mwifiex_sdio_remove() callback function is called when |
35 | * user removes this module from kernel space or ejects | |
36 | * the card from the slot. The driver handles these 2 cases | |
37 | * differently. | |
38 | * If the user is removing the module, the few commands (FUNC_SHUTDOWN, | |
39 | * HS_CANCEL etc.) are sent to the firmware. | |
40 | * If the card is removed, there is no need to send these command. | |
41 | * | |
42 | * The variable 'user_rmmod' is used to distinguish these two | |
43 | * scenarios. This flag is initialized as FALSE in case the card | |
44 | * is removed, and will be set to TRUE for module removal when | |
45 | * module_exit function is called. | |
46 | */ | |
47 | static u8 user_rmmod; | |
48 | ||
5e6e3a92 BZ |
49 | static struct mwifiex_if_ops sdio_ops; |
50 | ||
51 | static struct semaphore add_remove_card_sem; | |
52 | ||
287546df AK |
53 | static int mwifiex_sdio_resume(struct device *dev); |
54 | ||
5e6e3a92 BZ |
55 | /* |
56 | * SDIO probe. | |
57 | * | |
58 | * This function probes an mwifiex device and registers it. It allocates | |
59 | * the card structure, enables SDIO function number and initiates the | |
60 | * device registration and initialization procedure by adding a logical | |
61 | * interface. | |
62 | */ | |
63 | static int | |
64 | mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) | |
65 | { | |
270e58e8 | 66 | int ret; |
5e6e3a92 BZ |
67 | struct sdio_mmc_card *card = NULL; |
68 | ||
69 | pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", | |
5dbd326c | 70 | func->vendor, func->device, func->class, func->num); |
5e6e3a92 BZ |
71 | |
72 | card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); | |
e404decb | 73 | if (!card) |
5e6e3a92 | 74 | return -ENOMEM; |
5e6e3a92 BZ |
75 | |
76 | card->func = func; | |
77 | ||
78 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; | |
79 | ||
80 | sdio_claim_host(func); | |
81 | ret = sdio_enable_func(func); | |
82 | sdio_release_host(func); | |
83 | ||
84 | if (ret) { | |
85 | pr_err("%s: failed to enable function\n", __func__); | |
b53575ec | 86 | kfree(card); |
5e6e3a92 BZ |
87 | return -EIO; |
88 | } | |
89 | ||
d930faee AK |
90 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops, |
91 | MWIFIEX_SDIO)) { | |
5e6e3a92 BZ |
92 | pr_err("%s: add card failed\n", __func__); |
93 | kfree(card); | |
94 | sdio_claim_host(func); | |
95 | ret = sdio_disable_func(func); | |
96 | sdio_release_host(func); | |
97 | ret = -1; | |
98 | } | |
99 | ||
100 | return ret; | |
101 | } | |
102 | ||
103 | /* | |
104 | * SDIO remove. | |
105 | * | |
106 | * This function removes the interface and frees up the card structure. | |
107 | */ | |
108 | static void | |
109 | mwifiex_sdio_remove(struct sdio_func *func) | |
110 | { | |
111 | struct sdio_mmc_card *card; | |
287546df | 112 | struct mwifiex_adapter *adapter; |
5dbd326c | 113 | struct mwifiex_private *priv; |
287546df | 114 | int i; |
5e6e3a92 BZ |
115 | |
116 | pr_debug("info: SDIO func num=%d\n", func->num); | |
117 | ||
287546df AK |
118 | card = sdio_get_drvdata(func); |
119 | if (!card) | |
120 | return; | |
121 | ||
122 | adapter = card->adapter; | |
123 | if (!adapter || !adapter->priv_num) | |
124 | return; | |
125 | ||
59a4cc25 AK |
126 | /* In case driver is removed when asynchronous FW load is in progress */ |
127 | wait_for_completion(&adapter->fw_load); | |
128 | ||
287546df AK |
129 | if (user_rmmod) { |
130 | if (adapter->is_suspended) | |
131 | mwifiex_sdio_resume(adapter->dev); | |
132 | ||
133 | for (i = 0; i < adapter->priv_num; i++) | |
134 | if ((GET_BSS_ROLE(adapter->priv[i]) == | |
135 | MWIFIEX_BSS_ROLE_STA) && | |
5dbd326c | 136 | adapter->priv[i]->media_connected) |
287546df AK |
137 | mwifiex_deauthenticate(adapter->priv[i], NULL); |
138 | ||
5dbd326c YAP |
139 | priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); |
140 | mwifiex_disable_auto_ds(priv); | |
141 | mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); | |
5e6e3a92 | 142 | } |
287546df AK |
143 | |
144 | mwifiex_remove_card(card->adapter, &add_remove_card_sem); | |
145 | kfree(card); | |
5e6e3a92 BZ |
146 | } |
147 | ||
148 | /* | |
149 | * SDIO suspend. | |
150 | * | |
151 | * Kernel needs to suspend all functions separately. Therefore all | |
152 | * registered functions must have drivers with suspend and resume | |
153 | * methods. Failing that the kernel simply removes the whole card. | |
154 | * | |
155 | * If already not suspended, this function allocates and sends a host | |
156 | * sleep activate request to the firmware and turns off the traffic. | |
157 | */ | |
158 | static int mwifiex_sdio_suspend(struct device *dev) | |
159 | { | |
160 | struct sdio_func *func = dev_to_sdio_func(dev); | |
161 | struct sdio_mmc_card *card; | |
270e58e8 | 162 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
163 | mmc_pm_flag_t pm_flag = 0; |
164 | int hs_actived = 0; | |
165 | int i; | |
166 | int ret = 0; | |
167 | ||
168 | if (func) { | |
169 | pm_flag = sdio_get_host_pm_caps(func); | |
170 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", | |
5dbd326c | 171 | sdio_func_id(func), pm_flag); |
5e6e3a92 BZ |
172 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { |
173 | pr_err("%s: cannot remain alive while host is" | |
174 | " suspended\n", sdio_func_id(func)); | |
175 | return -ENOSYS; | |
176 | } | |
177 | ||
178 | card = sdio_get_drvdata(func); | |
179 | if (!card || !card->adapter) { | |
180 | pr_err("suspend: invalid card or adapter\n"); | |
181 | return 0; | |
182 | } | |
183 | } else { | |
184 | pr_err("suspend: sdio_func is not specified\n"); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | adapter = card->adapter; | |
189 | ||
190 | /* Enable the Host Sleep */ | |
191 | hs_actived = mwifiex_enable_hs(adapter); | |
192 | if (hs_actived) { | |
193 | pr_debug("cmd: suspend with MMC_PM_KEEP_POWER\n"); | |
194 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
195 | } | |
196 | ||
197 | /* Indicate device suspended */ | |
198 | adapter->is_suspended = true; | |
199 | ||
200 | for (i = 0; i < adapter->priv_num; i++) | |
201 | netif_carrier_off(adapter->priv[i]->netdev); | |
202 | ||
203 | return ret; | |
204 | } | |
205 | ||
206 | /* | |
207 | * SDIO resume. | |
208 | * | |
209 | * Kernel needs to suspend all functions separately. Therefore all | |
210 | * registered functions must have drivers with suspend and resume | |
211 | * methods. Failing that the kernel simply removes the whole card. | |
212 | * | |
213 | * If already not resumed, this function turns on the traffic and | |
214 | * sends a host sleep cancel request to the firmware. | |
215 | */ | |
216 | static int mwifiex_sdio_resume(struct device *dev) | |
217 | { | |
218 | struct sdio_func *func = dev_to_sdio_func(dev); | |
219 | struct sdio_mmc_card *card; | |
270e58e8 | 220 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
221 | mmc_pm_flag_t pm_flag = 0; |
222 | int i; | |
223 | ||
224 | if (func) { | |
225 | pm_flag = sdio_get_host_pm_caps(func); | |
226 | card = sdio_get_drvdata(func); | |
227 | if (!card || !card->adapter) { | |
228 | pr_err("resume: invalid card or adapter\n"); | |
229 | return 0; | |
230 | } | |
231 | } else { | |
232 | pr_err("resume: sdio_func is not specified\n"); | |
233 | return 0; | |
234 | } | |
235 | ||
236 | adapter = card->adapter; | |
237 | ||
238 | if (!adapter->is_suspended) { | |
239 | dev_warn(adapter->dev, "device already resumed\n"); | |
240 | return 0; | |
241 | } | |
242 | ||
243 | adapter->is_suspended = false; | |
244 | ||
245 | for (i = 0; i < adapter->priv_num; i++) | |
246 | if (adapter->priv[i]->media_connected) | |
247 | netif_carrier_on(adapter->priv[i]->netdev); | |
248 | ||
249 | /* Disable Host Sleep */ | |
250 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
600f5d90 | 251 | MWIFIEX_ASYNC_CMD); |
5e6e3a92 BZ |
252 | |
253 | return 0; | |
254 | } | |
255 | ||
98e6b9df W |
256 | /* Device ID for SD8786 */ |
257 | #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) | |
5e6e3a92 BZ |
258 | /* Device ID for SD8787 */ |
259 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) | |
e3bea1c8 BZ |
260 | /* Device ID for SD8797 */ |
261 | #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) | |
5e6e3a92 BZ |
262 | |
263 | /* WLAN IDs */ | |
264 | static const struct sdio_device_id mwifiex_ids[] = { | |
98e6b9df | 265 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786)}, |
5e6e3a92 | 266 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)}, |
e3bea1c8 | 267 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797)}, |
5e6e3a92 BZ |
268 | {}, |
269 | }; | |
270 | ||
271 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); | |
272 | ||
273 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { | |
274 | .suspend = mwifiex_sdio_suspend, | |
275 | .resume = mwifiex_sdio_resume, | |
276 | }; | |
277 | ||
278 | static struct sdio_driver mwifiex_sdio = { | |
279 | .name = "mwifiex_sdio", | |
280 | .id_table = mwifiex_ids, | |
281 | .probe = mwifiex_sdio_probe, | |
282 | .remove = mwifiex_sdio_remove, | |
283 | .drv = { | |
284 | .owner = THIS_MODULE, | |
285 | .pm = &mwifiex_sdio_pm_ops, | |
286 | } | |
287 | }; | |
288 | ||
289 | /* | |
290 | * This function writes data into SDIO card register. | |
291 | */ | |
292 | static int | |
293 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u32 data) | |
294 | { | |
295 | struct sdio_mmc_card *card = adapter->card; | |
296 | int ret = -1; | |
297 | ||
298 | sdio_claim_host(card->func); | |
299 | sdio_writeb(card->func, (u8) data, reg, &ret); | |
300 | sdio_release_host(card->func); | |
301 | ||
302 | return ret; | |
303 | } | |
304 | ||
305 | /* | |
306 | * This function reads data from SDIO card register. | |
307 | */ | |
308 | static int | |
309 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u32 *data) | |
310 | { | |
311 | struct sdio_mmc_card *card = adapter->card; | |
312 | int ret = -1; | |
313 | u8 val; | |
314 | ||
315 | sdio_claim_host(card->func); | |
316 | val = sdio_readb(card->func, reg, &ret); | |
317 | sdio_release_host(card->func); | |
318 | ||
319 | *data = val; | |
320 | ||
321 | return ret; | |
322 | } | |
323 | ||
324 | /* | |
325 | * This function writes multiple data into SDIO card memory. | |
326 | * | |
327 | * This does not work in suspended mode. | |
328 | */ | |
329 | static int | |
330 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, | |
572e8f3e | 331 | u8 *buffer, u32 pkt_len, u32 port) |
5e6e3a92 BZ |
332 | { |
333 | struct sdio_mmc_card *card = adapter->card; | |
334 | int ret = -1; | |
335 | u8 blk_mode = | |
336 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
337 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
338 | u32 blk_cnt = | |
339 | (blk_mode == | |
340 | BLOCK_MODE) ? (pkt_len / | |
341 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; | |
342 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
343 | ||
344 | if (adapter->is_suspended) { | |
345 | dev_err(adapter->dev, | |
346 | "%s: not allowed while suspended\n", __func__); | |
347 | return -1; | |
348 | } | |
349 | ||
350 | sdio_claim_host(card->func); | |
351 | ||
352 | if (!sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size)) | |
353 | ret = 0; | |
354 | ||
355 | sdio_release_host(card->func); | |
356 | ||
357 | return ret; | |
358 | } | |
359 | ||
360 | /* | |
361 | * This function reads multiple data from SDIO card memory. | |
362 | */ | |
572e8f3e AK |
363 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
364 | u32 len, u32 port, u8 claim) | |
5e6e3a92 BZ |
365 | { |
366 | struct sdio_mmc_card *card = adapter->card; | |
367 | int ret = -1; | |
5dbd326c YAP |
368 | u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE |
369 | : BLOCK_MODE; | |
5e6e3a92 | 370 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
5dbd326c YAP |
371 | u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) |
372 | : len; | |
5e6e3a92 BZ |
373 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
374 | ||
375 | if (claim) | |
376 | sdio_claim_host(card->func); | |
377 | ||
378 | if (!sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size)) | |
379 | ret = 0; | |
380 | ||
381 | if (claim) | |
382 | sdio_release_host(card->func); | |
383 | ||
384 | return ret; | |
385 | } | |
386 | ||
387 | /* | |
388 | * This function wakes up the card. | |
389 | * | |
390 | * A host power up command is written to the card configuration | |
391 | * register to wake up the card. | |
392 | */ | |
393 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
394 | { | |
5e6e3a92 | 395 | dev_dbg(adapter->dev, "event: wakeup device...\n"); |
5e6e3a92 | 396 | |
636c4598 | 397 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
5e6e3a92 BZ |
398 | } |
399 | ||
400 | /* | |
401 | * This function is called after the card has woken up. | |
402 | * | |
403 | * The card configuration register is reset. | |
404 | */ | |
405 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
406 | { | |
5e6e3a92 | 407 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); |
5e6e3a92 | 408 | |
636c4598 | 409 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
5e6e3a92 BZ |
410 | } |
411 | ||
412 | /* | |
413 | * This function initializes the IO ports. | |
414 | * | |
415 | * The following operations are performed - | |
416 | * - Read the IO ports (0, 1 and 2) | |
417 | * - Set host interrupt Reset-To-Read to clear | |
418 | * - Set auto re-enable interrupt | |
419 | */ | |
420 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) | |
421 | { | |
422 | u32 reg; | |
423 | ||
424 | adapter->ioport = 0; | |
425 | ||
426 | /* Read the IO port */ | |
427 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) | |
428 | adapter->ioport |= (reg & 0xff); | |
429 | else | |
430 | return -1; | |
431 | ||
432 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) | |
433 | adapter->ioport |= ((reg & 0xff) << 8); | |
434 | else | |
435 | return -1; | |
436 | ||
437 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) | |
438 | adapter->ioport |= ((reg & 0xff) << 16); | |
439 | else | |
440 | return -1; | |
441 | ||
442 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); | |
443 | ||
444 | /* Set Host interrupt reset to read to clear */ | |
445 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) | |
446 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, | |
447 | reg | SDIO_INT_MASK); | |
448 | else | |
449 | return -1; | |
450 | ||
451 | /* Dnld/Upld ready set to auto reset */ | |
452 | if (!mwifiex_read_reg(adapter, CARD_MISC_CFG_REG, ®)) | |
453 | mwifiex_write_reg(adapter, CARD_MISC_CFG_REG, | |
454 | reg | AUTO_RE_ENABLE_INT); | |
455 | else | |
456 | return -1; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | /* | |
462 | * This function sends data to the card. | |
463 | */ | |
464 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, | |
465 | u8 *payload, u32 pkt_len, u32 port) | |
466 | { | |
467 | u32 i = 0; | |
270e58e8 | 468 | int ret; |
5e6e3a92 BZ |
469 | |
470 | do { | |
572e8f3e | 471 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
5e6e3a92 BZ |
472 | if (ret) { |
473 | i++; | |
474 | dev_err(adapter->dev, "host_to_card, write iomem" | |
475 | " (%d) failed: %d\n", i, ret); | |
5dbd326c | 476 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
5e6e3a92 BZ |
477 | dev_err(adapter->dev, "write CFG reg failed\n"); |
478 | ||
479 | ret = -1; | |
480 | if (i > MAX_WRITE_IOMEM_RETRY) | |
481 | return ret; | |
482 | } | |
483 | } while (ret == -1); | |
484 | ||
485 | return ret; | |
486 | } | |
487 | ||
488 | /* | |
489 | * This function gets the read port. | |
490 | * | |
491 | * If control port bit is set in MP read bitmap, the control port | |
492 | * is returned, otherwise the current read port is returned and | |
493 | * the value is increased (provided it does not reach the maximum | |
494 | * limit, in which case it is reset to 1) | |
495 | */ | |
496 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) | |
497 | { | |
498 | struct sdio_mmc_card *card = adapter->card; | |
499 | u16 rd_bitmap = card->mp_rd_bitmap; | |
500 | ||
501 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap); | |
502 | ||
503 | if (!(rd_bitmap & (CTRL_PORT_MASK | DATA_PORT_MASK))) | |
504 | return -1; | |
505 | ||
506 | if (card->mp_rd_bitmap & CTRL_PORT_MASK) { | |
507 | card->mp_rd_bitmap &= (u16) (~CTRL_PORT_MASK); | |
508 | *port = CTRL_PORT; | |
509 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%04x\n", | |
5dbd326c | 510 | *port, card->mp_rd_bitmap); |
5e6e3a92 BZ |
511 | } else { |
512 | if (card->mp_rd_bitmap & (1 << card->curr_rd_port)) { | |
5dbd326c YAP |
513 | card->mp_rd_bitmap &= (u16) |
514 | (~(1 << card->curr_rd_port)); | |
5e6e3a92 BZ |
515 | *port = card->curr_rd_port; |
516 | ||
517 | if (++card->curr_rd_port == MAX_PORT) | |
518 | card->curr_rd_port = 1; | |
519 | } else { | |
520 | return -1; | |
521 | } | |
522 | ||
523 | dev_dbg(adapter->dev, | |
524 | "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n", | |
5dbd326c | 525 | *port, rd_bitmap, card->mp_rd_bitmap); |
5e6e3a92 BZ |
526 | } |
527 | return 0; | |
528 | } | |
529 | ||
530 | /* | |
531 | * This function gets the write port for data. | |
532 | * | |
533 | * The current write port is returned if available and the value is | |
534 | * increased (provided it does not reach the maximum limit, in which | |
535 | * case it is reset to 1) | |
536 | */ | |
537 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u8 *port) | |
538 | { | |
539 | struct sdio_mmc_card *card = adapter->card; | |
540 | u16 wr_bitmap = card->mp_wr_bitmap; | |
541 | ||
542 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap); | |
543 | ||
544 | if (!(wr_bitmap & card->mp_data_port_mask)) | |
545 | return -1; | |
546 | ||
547 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { | |
548 | card->mp_wr_bitmap &= (u16) (~(1 << card->curr_wr_port)); | |
549 | *port = card->curr_wr_port; | |
550 | if (++card->curr_wr_port == card->mp_end_port) | |
551 | card->curr_wr_port = 1; | |
552 | } else { | |
553 | adapter->data_sent = true; | |
554 | return -EBUSY; | |
555 | } | |
556 | ||
557 | if (*port == CTRL_PORT) { | |
558 | dev_err(adapter->dev, "invalid data port=%d cur port=%d" | |
5dbd326c YAP |
559 | " mp_wr_bitmap=0x%04x -> 0x%04x\n", |
560 | *port, card->curr_wr_port, wr_bitmap, | |
561 | card->mp_wr_bitmap); | |
5e6e3a92 BZ |
562 | return -1; |
563 | } | |
564 | ||
565 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n", | |
5dbd326c | 566 | *port, wr_bitmap, card->mp_wr_bitmap); |
5e6e3a92 BZ |
567 | |
568 | return 0; | |
569 | } | |
570 | ||
571 | /* | |
572 | * This function polls the card status. | |
573 | */ | |
574 | static int | |
575 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) | |
576 | { | |
577 | u32 tries; | |
270e58e8 | 578 | u32 cs; |
5e6e3a92 BZ |
579 | |
580 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
581 | if (mwifiex_read_reg(adapter, CARD_STATUS_REG, &cs)) | |
582 | break; | |
583 | else if ((cs & bits) == bits) | |
584 | return 0; | |
585 | ||
e7891ba2 | 586 | usleep_range(10, 20); |
5e6e3a92 BZ |
587 | } |
588 | ||
5dbd326c YAP |
589 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries); |
590 | ||
5e6e3a92 BZ |
591 | return -1; |
592 | } | |
593 | ||
594 | /* | |
595 | * This function reads the firmware status. | |
596 | */ | |
597 | static int | |
598 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) | |
599 | { | |
270e58e8 | 600 | u32 fws0, fws1; |
5e6e3a92 BZ |
601 | |
602 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS0_REG, &fws0)) | |
603 | return -1; | |
604 | ||
605 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS1_REG, &fws1)) | |
606 | return -1; | |
607 | ||
608 | *dat = (u16) ((fws1 << 8) | fws0); | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
613 | /* | |
614 | * This function disables the host interrupt. | |
615 | * | |
616 | * The host interrupt mask is read, the disable bit is reset and | |
617 | * written back to the card host interrupt mask register. | |
618 | */ | |
619 | static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) | |
620 | { | |
270e58e8 | 621 | u32 host_int_mask; |
5e6e3a92 BZ |
622 | |
623 | /* Read back the host_int_mask register */ | |
624 | if (mwifiex_read_reg(adapter, HOST_INT_MASK_REG, &host_int_mask)) | |
625 | return -1; | |
626 | ||
627 | /* Update with the mask and write back to the register */ | |
628 | host_int_mask &= ~HOST_INT_DISABLE; | |
629 | ||
630 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, host_int_mask)) { | |
631 | dev_err(adapter->dev, "disable host interrupt failed\n"); | |
632 | return -1; | |
633 | } | |
634 | ||
635 | return 0; | |
636 | } | |
637 | ||
638 | /* | |
639 | * This function enables the host interrupt. | |
640 | * | |
641 | * The host interrupt enable mask is written to the card | |
642 | * host interrupt mask register. | |
643 | */ | |
644 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) | |
645 | { | |
646 | /* Simply write the mask to the register */ | |
647 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, HOST_INT_ENABLE)) { | |
648 | dev_err(adapter->dev, "enable host interrupt failed\n"); | |
649 | return -1; | |
650 | } | |
651 | return 0; | |
652 | } | |
653 | ||
654 | /* | |
655 | * This function sends a data buffer to the card. | |
656 | */ | |
657 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, | |
658 | u32 *type, u8 *buffer, | |
659 | u32 npayload, u32 ioport) | |
660 | { | |
270e58e8 | 661 | int ret; |
5e6e3a92 BZ |
662 | u32 nb; |
663 | ||
664 | if (!buffer) { | |
665 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); | |
666 | return -1; | |
667 | } | |
668 | ||
572e8f3e | 669 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
5e6e3a92 BZ |
670 | |
671 | if (ret) { | |
672 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, | |
5dbd326c | 673 | ret); |
5e6e3a92 BZ |
674 | return -1; |
675 | } | |
676 | ||
677 | nb = le16_to_cpu(*(__le16 *) (buffer)); | |
678 | if (nb > npayload) { | |
5dbd326c YAP |
679 | dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n", |
680 | __func__, nb, npayload); | |
5e6e3a92 BZ |
681 | return -1; |
682 | } | |
683 | ||
684 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); | |
685 | ||
686 | return ret; | |
687 | } | |
688 | ||
689 | /* | |
690 | * This function downloads the firmware to the card. | |
691 | * | |
692 | * Firmware is downloaded to the card in blocks. Every block download | |
693 | * is tested for CRC errors, and retried a number of times before | |
694 | * returning failure. | |
695 | */ | |
696 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
697 | struct mwifiex_fw_image *fw) | |
698 | { | |
270e58e8 | 699 | int ret; |
5e6e3a92 BZ |
700 | u8 *firmware = fw->fw_buf; |
701 | u32 firmware_len = fw->fw_len; | |
702 | u32 offset = 0; | |
703 | u32 base0, base1; | |
704 | u8 *fwbuf; | |
705 | u16 len = 0; | |
270e58e8 | 706 | u32 txlen, tx_blocks = 0, tries; |
5e6e3a92 BZ |
707 | u32 i = 0; |
708 | ||
709 | if (!firmware_len) { | |
5dbd326c YAP |
710 | dev_err(adapter->dev, |
711 | "firmware image not found! Terminating download\n"); | |
5e6e3a92 BZ |
712 | return -1; |
713 | } | |
714 | ||
715 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", | |
5dbd326c | 716 | firmware_len); |
5e6e3a92 BZ |
717 | |
718 | /* Assume that the allocated buffer is 8-byte aligned */ | |
719 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); | |
720 | if (!fwbuf) { | |
5dbd326c YAP |
721 | dev_err(adapter->dev, |
722 | "unable to alloc buffer for FW. Terminating dnld\n"); | |
b53575ec | 723 | return -ENOMEM; |
5e6e3a92 BZ |
724 | } |
725 | ||
726 | /* Perform firmware data transfer */ | |
727 | do { | |
728 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY | |
729 | bits */ | |
730 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | | |
731 | DN_LD_CARD_RDY); | |
732 | if (ret) { | |
733 | dev_err(adapter->dev, "FW download with helper:" | |
5dbd326c | 734 | " poll status timeout @ %d\n", offset); |
5e6e3a92 BZ |
735 | goto done; |
736 | } | |
737 | ||
738 | /* More data? */ | |
739 | if (offset >= firmware_len) | |
740 | break; | |
741 | ||
742 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
743 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_0, | |
744 | &base0); | |
745 | if (ret) { | |
5dbd326c YAP |
746 | dev_err(adapter->dev, |
747 | "dev BASE0 register read failed: " | |
748 | "base0=%#04X(%d). Terminating dnld\n", | |
749 | base0, base0); | |
5e6e3a92 BZ |
750 | goto done; |
751 | } | |
752 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_1, | |
753 | &base1); | |
754 | if (ret) { | |
5dbd326c YAP |
755 | dev_err(adapter->dev, |
756 | "dev BASE1 register read failed: " | |
757 | "base1=%#04X(%d). Terminating dnld\n", | |
758 | base1, base1); | |
5e6e3a92 BZ |
759 | goto done; |
760 | } | |
761 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); | |
762 | ||
763 | if (len) | |
764 | break; | |
765 | ||
e7891ba2 | 766 | usleep_range(10, 20); |
5e6e3a92 BZ |
767 | } |
768 | ||
769 | if (!len) { | |
770 | break; | |
771 | } else if (len > MWIFIEX_UPLD_SIZE) { | |
5dbd326c YAP |
772 | dev_err(adapter->dev, |
773 | "FW dnld failed @ %d, invalid length %d\n", | |
774 | offset, len); | |
5e6e3a92 BZ |
775 | ret = -1; |
776 | goto done; | |
777 | } | |
778 | ||
779 | txlen = len; | |
780 | ||
781 | if (len & BIT(0)) { | |
782 | i++; | |
783 | if (i > MAX_WRITE_IOMEM_RETRY) { | |
5dbd326c YAP |
784 | dev_err(adapter->dev, |
785 | "FW dnld failed @ %d, over max retry\n", | |
786 | offset); | |
5e6e3a92 BZ |
787 | ret = -1; |
788 | goto done; | |
789 | } | |
790 | dev_err(adapter->dev, "CRC indicated by the helper:" | |
5dbd326c | 791 | " len = 0x%04X, txlen = %d\n", len, txlen); |
5e6e3a92 BZ |
792 | len &= ~BIT(0); |
793 | /* Setting this to 0 to resend from same offset */ | |
794 | txlen = 0; | |
795 | } else { | |
796 | i = 0; | |
797 | ||
798 | /* Set blocksize to transfer - checking for last | |
799 | block */ | |
800 | if (firmware_len - offset < txlen) | |
801 | txlen = firmware_len - offset; | |
802 | ||
5dbd326c YAP |
803 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) |
804 | / MWIFIEX_SDIO_BLOCK_SIZE; | |
5e6e3a92 BZ |
805 | |
806 | /* Copy payload to buffer */ | |
807 | memmove(fwbuf, &firmware[offset], txlen); | |
808 | } | |
809 | ||
810 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * | |
811 | MWIFIEX_SDIO_BLOCK_SIZE, | |
572e8f3e | 812 | adapter->ioport); |
5e6e3a92 | 813 | if (ret) { |
5dbd326c YAP |
814 | dev_err(adapter->dev, |
815 | "FW download, write iomem (%d) failed @ %d\n", | |
816 | i, offset); | |
5e6e3a92 BZ |
817 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
818 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
819 | ||
820 | ret = -1; | |
821 | goto done; | |
822 | } | |
823 | ||
824 | offset += txlen; | |
825 | } while (true); | |
826 | ||
827 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", | |
5dbd326c | 828 | offset); |
5e6e3a92 BZ |
829 | |
830 | ret = 0; | |
831 | done: | |
832 | kfree(fwbuf); | |
833 | return ret; | |
834 | } | |
835 | ||
836 | /* | |
837 | * This function checks the firmware status in card. | |
838 | * | |
839 | * The winner interface is also determined by this function. | |
840 | */ | |
841 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, | |
d930faee | 842 | u32 poll_num) |
5e6e3a92 BZ |
843 | { |
844 | int ret = 0; | |
845 | u16 firmware_stat; | |
846 | u32 tries; | |
847 | u32 winner_status; | |
848 | ||
849 | /* Wait for firmware initialization event */ | |
850 | for (tries = 0; tries < poll_num; tries++) { | |
851 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); | |
852 | if (ret) | |
853 | continue; | |
d930faee | 854 | if (firmware_stat == FIRMWARE_READY_SDIO) { |
5e6e3a92 BZ |
855 | ret = 0; |
856 | break; | |
857 | } else { | |
858 | mdelay(100); | |
859 | ret = -1; | |
860 | } | |
861 | } | |
862 | ||
d930faee | 863 | if (ret) { |
5e6e3a92 BZ |
864 | if (mwifiex_read_reg |
865 | (adapter, CARD_FW_STATUS0_REG, &winner_status)) | |
866 | winner_status = 0; | |
867 | ||
868 | if (winner_status) | |
d930faee | 869 | adapter->winner = 0; |
5e6e3a92 | 870 | else |
d930faee | 871 | adapter->winner = 1; |
5e6e3a92 BZ |
872 | } |
873 | return ret; | |
874 | } | |
875 | ||
876 | /* | |
877 | * This function reads the interrupt status from card. | |
878 | */ | |
879 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) | |
880 | { | |
881 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 882 | u32 sdio_ireg; |
5e6e3a92 BZ |
883 | unsigned long flags; |
884 | ||
885 | if (mwifiex_read_data_sync(adapter, card->mp_regs, MAX_MP_REGS, | |
572e8f3e | 886 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, |
5e6e3a92 BZ |
887 | 0)) { |
888 | dev_err(adapter->dev, "read mp_regs failed\n"); | |
889 | return; | |
890 | } | |
891 | ||
892 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; | |
893 | if (sdio_ireg) { | |
894 | /* | |
895 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
896 | * Clear the interrupt status register | |
897 | */ | |
898 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); | |
899 | spin_lock_irqsave(&adapter->int_lock, flags); | |
900 | adapter->int_status |= sdio_ireg; | |
901 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
902 | } | |
5e6e3a92 BZ |
903 | } |
904 | ||
905 | /* | |
906 | * SDIO interrupt handler. | |
907 | * | |
908 | * This function reads the interrupt status from firmware and assigns | |
909 | * the main process in workqueue which will handle the interrupt. | |
910 | */ | |
911 | static void | |
912 | mwifiex_sdio_interrupt(struct sdio_func *func) | |
913 | { | |
914 | struct mwifiex_adapter *adapter; | |
915 | struct sdio_mmc_card *card; | |
916 | ||
917 | card = sdio_get_drvdata(func); | |
918 | if (!card || !card->adapter) { | |
919 | pr_debug("int: func=%p card=%p adapter=%p\n", | |
5dbd326c | 920 | func, card, card ? card->adapter : NULL); |
5e6e3a92 BZ |
921 | return; |
922 | } | |
923 | adapter = card->adapter; | |
924 | ||
925 | if (adapter->surprise_removed) | |
926 | return; | |
927 | ||
928 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) | |
929 | adapter->ps_state = PS_STATE_AWAKE; | |
930 | ||
931 | mwifiex_interrupt_status(adapter); | |
932 | queue_work(adapter->workqueue, &adapter->main_work); | |
5e6e3a92 BZ |
933 | } |
934 | ||
935 | /* | |
936 | * This function decodes a received packet. | |
937 | * | |
938 | * Based on the type, the packet is treated as either a data, or | |
939 | * a command response, or an event, and the correct handler | |
940 | * function is invoked. | |
941 | */ | |
942 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, | |
943 | struct sk_buff *skb, u32 upld_typ) | |
944 | { | |
945 | u8 *cmd_buf; | |
946 | ||
947 | skb_pull(skb, INTF_HEADER_LEN); | |
948 | ||
949 | switch (upld_typ) { | |
950 | case MWIFIEX_TYPE_DATA: | |
951 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); | |
952 | mwifiex_handle_rx_packet(adapter, skb); | |
953 | break; | |
954 | ||
955 | case MWIFIEX_TYPE_CMD: | |
956 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); | |
957 | /* take care of curr_cmd = NULL case */ | |
958 | if (!adapter->curr_cmd) { | |
959 | cmd_buf = adapter->upld_buf; | |
960 | ||
961 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) | |
962 | mwifiex_process_sleep_confirm_resp(adapter, | |
5dbd326c YAP |
963 | skb->data, |
964 | skb->len); | |
5e6e3a92 | 965 | |
5dbd326c YAP |
966 | memcpy(cmd_buf, skb->data, |
967 | min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, | |
968 | skb->len)); | |
5e6e3a92 BZ |
969 | |
970 | dev_kfree_skb_any(skb); | |
971 | } else { | |
972 | adapter->cmd_resp_received = true; | |
973 | adapter->curr_cmd->resp_skb = skb; | |
974 | } | |
975 | break; | |
976 | ||
977 | case MWIFIEX_TYPE_EVENT: | |
978 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); | |
979 | adapter->event_cause = *(u32 *) skb->data; | |
980 | ||
981 | skb_pull(skb, MWIFIEX_EVENT_HEADER_LEN); | |
982 | ||
983 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) | |
984 | memcpy(adapter->event_body, skb->data, skb->len); | |
985 | ||
986 | /* event cause has been saved to adapter->event_cause */ | |
987 | adapter->event_received = true; | |
988 | adapter->event_skb = skb; | |
989 | ||
990 | break; | |
991 | ||
992 | default: | |
993 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); | |
994 | dev_kfree_skb_any(skb); | |
995 | break; | |
996 | } | |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * This function transfers received packets from card to driver, performing | |
1003 | * aggregation if required. | |
1004 | * | |
1005 | * For data received on control port, or if aggregation is disabled, the | |
1006 | * received buffers are uploaded as separate packets. However, if aggregation | |
1007 | * is enabled and required, the buffers are copied onto an aggregation buffer, | |
1008 | * provided there is space left, processed and finally uploaded. | |
1009 | */ | |
1010 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, | |
1011 | struct sk_buff *skb, u8 port) | |
1012 | { | |
1013 | struct sdio_mmc_card *card = adapter->card; | |
1014 | s32 f_do_rx_aggr = 0; | |
1015 | s32 f_do_rx_cur = 0; | |
1016 | s32 f_aggr_cur = 0; | |
1017 | struct sk_buff *skb_deaggr; | |
270e58e8 | 1018 | u32 pind; |
5e6e3a92 BZ |
1019 | u32 pkt_len, pkt_type = 0; |
1020 | u8 *curr_ptr; | |
1021 | u32 rx_len = skb->len; | |
1022 | ||
1023 | if (port == CTRL_PORT) { | |
1024 | /* Read the command Resp without aggr */ | |
1025 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " | |
5dbd326c | 1026 | "response\n", __func__); |
5e6e3a92 BZ |
1027 | |
1028 | f_do_rx_cur = 1; | |
1029 | goto rx_curr_single; | |
1030 | } | |
1031 | ||
1032 | if (!card->mpa_rx.enabled) { | |
1033 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", | |
5dbd326c | 1034 | __func__); |
5e6e3a92 BZ |
1035 | |
1036 | f_do_rx_cur = 1; | |
1037 | goto rx_curr_single; | |
1038 | } | |
1039 | ||
1040 | if (card->mp_rd_bitmap & (~((u16) CTRL_PORT_MASK))) { | |
1041 | /* Some more data RX pending */ | |
1042 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); | |
1043 | ||
1044 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1045 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { | |
1046 | f_aggr_cur = 1; | |
1047 | } else { | |
1048 | /* No room in Aggr buf, do rx aggr now */ | |
1049 | f_do_rx_aggr = 1; | |
1050 | f_do_rx_cur = 1; | |
1051 | } | |
1052 | } else { | |
1053 | /* Rx aggr not in progress */ | |
1054 | f_aggr_cur = 1; | |
1055 | } | |
1056 | ||
1057 | } else { | |
1058 | /* No more data RX pending */ | |
1059 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); | |
1060 | ||
1061 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1062 | f_do_rx_aggr = 1; | |
1063 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) | |
1064 | f_aggr_cur = 1; | |
1065 | else | |
1066 | /* No room in Aggr buf, do rx aggr now */ | |
1067 | f_do_rx_cur = 1; | |
1068 | } else { | |
1069 | f_do_rx_cur = 1; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | if (f_aggr_cur) { | |
1074 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); | |
1075 | /* Curr pkt can be aggregated */ | |
1076 | MP_RX_AGGR_SETUP(card, skb, port); | |
1077 | ||
1078 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || | |
1079 | MP_RX_AGGR_PORT_LIMIT_REACHED(card)) { | |
1080 | dev_dbg(adapter->dev, "info: %s: aggregated packet " | |
5dbd326c | 1081 | "limit reached\n", __func__); |
5e6e3a92 BZ |
1082 | /* No more pkts allowed in Aggr buf, rx it */ |
1083 | f_do_rx_aggr = 1; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | if (f_do_rx_aggr) { | |
1088 | /* do aggr RX now */ | |
1089 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", | |
5dbd326c | 1090 | card->mpa_rx.pkt_cnt); |
5e6e3a92 BZ |
1091 | |
1092 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, | |
1093 | card->mpa_rx.buf_len, | |
1094 | (adapter->ioport | 0x1000 | | |
1095 | (card->mpa_rx.ports << 4)) + | |
572e8f3e | 1096 | card->mpa_rx.start_port, 1)) |
17a60b48 | 1097 | goto error; |
5e6e3a92 BZ |
1098 | |
1099 | curr_ptr = card->mpa_rx.buf; | |
1100 | ||
1101 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1102 | ||
1103 | /* get curr PKT len & type */ | |
1104 | pkt_len = *(u16 *) &curr_ptr[0]; | |
1105 | pkt_type = *(u16 *) &curr_ptr[2]; | |
1106 | ||
1107 | /* copy pkt to deaggr buf */ | |
1108 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1109 | ||
1110 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= | |
1111 | card->mpa_rx.len_arr[pind])) { | |
1112 | ||
1113 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); | |
1114 | ||
1115 | skb_trim(skb_deaggr, pkt_len); | |
1116 | ||
1117 | /* Process de-aggr packet */ | |
1118 | mwifiex_decode_rx_packet(adapter, skb_deaggr, | |
1119 | pkt_type); | |
1120 | } else { | |
1121 | dev_err(adapter->dev, "wrong aggr pkt:" | |
1122 | " type=%d len=%d max_len=%d\n", | |
1123 | pkt_type, pkt_len, | |
1124 | card->mpa_rx.len_arr[pind]); | |
1125 | dev_kfree_skb_any(skb_deaggr); | |
1126 | } | |
1127 | curr_ptr += card->mpa_rx.len_arr[pind]; | |
1128 | } | |
1129 | MP_RX_AGGR_BUF_RESET(card); | |
1130 | } | |
1131 | ||
1132 | rx_curr_single: | |
1133 | if (f_do_rx_cur) { | |
1134 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", | |
1135 | port, rx_len); | |
1136 | ||
1137 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, | |
1138 | skb->data, skb->len, | |
1139 | adapter->ioport + port)) | |
17a60b48 | 1140 | goto error; |
5e6e3a92 BZ |
1141 | |
1142 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1143 | } | |
1144 | ||
1145 | return 0; | |
17a60b48 AP |
1146 | |
1147 | error: | |
1148 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1149 | /* Multiport-aggregation transfer failed - cleanup */ | |
1150 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1151 | /* copy pkt to deaggr buf */ | |
1152 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1153 | dev_kfree_skb_any(skb_deaggr); | |
1154 | } | |
1155 | MP_RX_AGGR_BUF_RESET(card); | |
1156 | } | |
1157 | ||
1158 | if (f_do_rx_cur) | |
1159 | /* Single transfer pending. Free curr buff also */ | |
1160 | dev_kfree_skb_any(skb); | |
1161 | ||
1162 | return -1; | |
5e6e3a92 BZ |
1163 | } |
1164 | ||
1165 | /* | |
1166 | * This function checks the current interrupt status. | |
1167 | * | |
1168 | * The following interrupts are checked and handled by this function - | |
1169 | * - Data sent | |
1170 | * - Command sent | |
1171 | * - Packets received | |
1172 | * | |
1173 | * Since the firmware does not generate download ready interrupt if the | |
1174 | * port updated is command port only, command sent interrupt checking | |
1175 | * should be done manually, and for every SDIO interrupt. | |
1176 | * | |
1177 | * In case of Rx packets received, the packets are uploaded from card to | |
1178 | * host and processed accordingly. | |
1179 | */ | |
1180 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) | |
1181 | { | |
1182 | struct sdio_mmc_card *card = adapter->card; | |
1183 | int ret = 0; | |
1184 | u8 sdio_ireg; | |
270e58e8 | 1185 | struct sk_buff *skb; |
5e6e3a92 BZ |
1186 | u8 port = CTRL_PORT; |
1187 | u32 len_reg_l, len_reg_u; | |
1188 | u32 rx_blocks; | |
1189 | u16 rx_len; | |
1190 | unsigned long flags; | |
1191 | ||
1192 | spin_lock_irqsave(&adapter->int_lock, flags); | |
1193 | sdio_ireg = adapter->int_status; | |
1194 | adapter->int_status = 0; | |
1195 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
1196 | ||
1197 | if (!sdio_ireg) | |
1198 | return ret; | |
1199 | ||
1200 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { | |
1201 | card->mp_wr_bitmap = ((u16) card->mp_regs[WR_BITMAP_U]) << 8; | |
1202 | card->mp_wr_bitmap |= (u16) card->mp_regs[WR_BITMAP_L]; | |
1203 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%04x\n", | |
5dbd326c | 1204 | card->mp_wr_bitmap); |
5e6e3a92 BZ |
1205 | if (adapter->data_sent && |
1206 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { | |
1207 | dev_dbg(adapter->dev, | |
1208 | "info: <--- Tx DONE Interrupt --->\n"); | |
1209 | adapter->data_sent = false; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | /* As firmware will not generate download ready interrupt if the port | |
1214 | updated is command port only, cmd_sent should be done for any SDIO | |
1215 | interrupt. */ | |
1216 | if (adapter->cmd_sent) { | |
1217 | /* Check if firmware has attach buffer at command port and | |
1218 | update just that in wr_bit_map. */ | |
1219 | card->mp_wr_bitmap |= | |
1220 | (u16) card->mp_regs[WR_BITMAP_L] & CTRL_PORT_MASK; | |
1221 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) | |
1222 | adapter->cmd_sent = false; | |
1223 | } | |
1224 | ||
1225 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", | |
5dbd326c | 1226 | adapter->cmd_sent, adapter->data_sent); |
5e6e3a92 BZ |
1227 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { |
1228 | card->mp_rd_bitmap = ((u16) card->mp_regs[RD_BITMAP_U]) << 8; | |
1229 | card->mp_rd_bitmap |= (u16) card->mp_regs[RD_BITMAP_L]; | |
1230 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%04x\n", | |
5dbd326c | 1231 | card->mp_rd_bitmap); |
5e6e3a92 BZ |
1232 | |
1233 | while (true) { | |
1234 | ret = mwifiex_get_rd_port(adapter, &port); | |
1235 | if (ret) { | |
1236 | dev_dbg(adapter->dev, | |
1237 | "info: no more rd_port available\n"); | |
1238 | break; | |
1239 | } | |
1240 | len_reg_l = RD_LEN_P0_L + (port << 1); | |
1241 | len_reg_u = RD_LEN_P0_U + (port << 1); | |
1242 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; | |
1243 | rx_len |= (u16) card->mp_regs[len_reg_l]; | |
1244 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", | |
5dbd326c | 1245 | port, rx_len); |
5e6e3a92 BZ |
1246 | rx_blocks = |
1247 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - | |
1248 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
5dbd326c YAP |
1249 | if (rx_len <= INTF_HEADER_LEN || |
1250 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1251 | MWIFIEX_RX_DATA_BUF_SIZE) { | |
5e6e3a92 | 1252 | dev_err(adapter->dev, "invalid rx_len=%d\n", |
5dbd326c | 1253 | rx_len); |
5e6e3a92 BZ |
1254 | return -1; |
1255 | } | |
1256 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1257 | ||
1258 | skb = dev_alloc_skb(rx_len); | |
1259 | ||
1260 | if (!skb) { | |
1261 | dev_err(adapter->dev, "%s: failed to alloc skb", | |
5dbd326c | 1262 | __func__); |
5e6e3a92 BZ |
1263 | return -1; |
1264 | } | |
1265 | ||
1266 | skb_put(skb, rx_len); | |
1267 | ||
1268 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", | |
5dbd326c | 1269 | rx_len, skb->len); |
5e6e3a92 BZ |
1270 | |
1271 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, | |
1272 | port)) { | |
1273 | u32 cr = 0; | |
1274 | ||
1275 | dev_err(adapter->dev, "card_to_host_mpa failed:" | |
5dbd326c | 1276 | " int status=%#x\n", sdio_ireg); |
5e6e3a92 BZ |
1277 | if (mwifiex_read_reg(adapter, |
1278 | CONFIGURATION_REG, &cr)) | |
1279 | dev_err(adapter->dev, | |
5dbd326c | 1280 | "read CFG reg failed\n"); |
5e6e3a92 BZ |
1281 | |
1282 | dev_dbg(adapter->dev, | |
5dbd326c | 1283 | "info: CFG reg val = %d\n", cr); |
5e6e3a92 BZ |
1284 | if (mwifiex_write_reg(adapter, |
1285 | CONFIGURATION_REG, | |
1286 | (cr | 0x04))) | |
1287 | dev_err(adapter->dev, | |
5dbd326c | 1288 | "write CFG reg failed\n"); |
5e6e3a92 BZ |
1289 | |
1290 | dev_dbg(adapter->dev, "info: write success\n"); | |
1291 | if (mwifiex_read_reg(adapter, | |
1292 | CONFIGURATION_REG, &cr)) | |
1293 | dev_err(adapter->dev, | |
5dbd326c | 1294 | "read CFG reg failed\n"); |
5e6e3a92 BZ |
1295 | |
1296 | dev_dbg(adapter->dev, | |
5dbd326c | 1297 | "info: CFG reg val =%x\n", cr); |
5e6e3a92 BZ |
1298 | return -1; |
1299 | } | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | /* | |
1307 | * This function aggregates transmission buffers in driver and downloads | |
1308 | * the aggregated packet to card. | |
1309 | * | |
1310 | * The individual packets are aggregated by copying into an aggregation | |
1311 | * buffer and then downloaded to the card. Previous unsent packets in the | |
1312 | * aggregation buffer are pre-copied first before new packets are added. | |
1313 | * Aggregation is done till there is space left in the aggregation buffer, | |
1314 | * or till new packets are available. | |
1315 | * | |
1316 | * The function will only download the packet to the card when aggregation | |
1317 | * stops, otherwise it will just aggregate the packet in aggregation buffer | |
1318 | * and return. | |
1319 | */ | |
1320 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, | |
1321 | u8 *payload, u32 pkt_len, u8 port, | |
1322 | u32 next_pkt_len) | |
1323 | { | |
1324 | struct sdio_mmc_card *card = adapter->card; | |
1325 | int ret = 0; | |
1326 | s32 f_send_aggr_buf = 0; | |
1327 | s32 f_send_cur_buf = 0; | |
1328 | s32 f_precopy_cur_buf = 0; | |
1329 | s32 f_postcopy_cur_buf = 0; | |
1330 | ||
1331 | if ((!card->mpa_tx.enabled) || (port == CTRL_PORT)) { | |
1332 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", | |
5dbd326c | 1333 | __func__); |
5e6e3a92 BZ |
1334 | |
1335 | f_send_cur_buf = 1; | |
1336 | goto tx_curr_single; | |
1337 | } | |
1338 | ||
1339 | if (next_pkt_len) { | |
1340 | /* More pkt in TX queue */ | |
1341 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", | |
5dbd326c | 1342 | __func__); |
5e6e3a92 BZ |
1343 | |
1344 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1345 | if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card) && | |
1346 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { | |
1347 | f_precopy_cur_buf = 1; | |
1348 | ||
1349 | if (!(card->mp_wr_bitmap & | |
5dbd326c YAP |
1350 | (1 << card->curr_wr_port)) || |
1351 | !MP_TX_AGGR_BUF_HAS_ROOM( | |
1352 | card, pkt_len + next_pkt_len)) | |
5e6e3a92 BZ |
1353 | f_send_aggr_buf = 1; |
1354 | } else { | |
1355 | /* No room in Aggr buf, send it */ | |
1356 | f_send_aggr_buf = 1; | |
1357 | ||
1358 | if (MP_TX_AGGR_PORT_LIMIT_REACHED(card) || | |
1359 | !(card->mp_wr_bitmap & | |
1360 | (1 << card->curr_wr_port))) | |
1361 | f_send_cur_buf = 1; | |
1362 | else | |
1363 | f_postcopy_cur_buf = 1; | |
1364 | } | |
1365 | } else { | |
5dbd326c YAP |
1366 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && |
1367 | (card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
5e6e3a92 BZ |
1368 | f_precopy_cur_buf = 1; |
1369 | else | |
1370 | f_send_cur_buf = 1; | |
1371 | } | |
1372 | } else { | |
1373 | /* Last pkt in TX queue */ | |
1374 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", | |
5dbd326c | 1375 | __func__); |
5e6e3a92 BZ |
1376 | |
1377 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1378 | /* some packs in Aggr buf already */ | |
1379 | f_send_aggr_buf = 1; | |
1380 | ||
1381 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) | |
1382 | f_precopy_cur_buf = 1; | |
1383 | else | |
1384 | /* No room in Aggr buf, send it */ | |
1385 | f_send_cur_buf = 1; | |
1386 | } else { | |
1387 | f_send_cur_buf = 1; | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | if (f_precopy_cur_buf) { | |
1392 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", | |
5dbd326c | 1393 | __func__); |
5e6e3a92 BZ |
1394 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1395 | ||
1396 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || | |
1397 | MP_TX_AGGR_PORT_LIMIT_REACHED(card)) | |
1398 | /* No more pkts allowed in Aggr buf, send it */ | |
1399 | f_send_aggr_buf = 1; | |
1400 | } | |
1401 | ||
1402 | if (f_send_aggr_buf) { | |
1403 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", | |
5dbd326c | 1404 | __func__, |
5e6e3a92 BZ |
1405 | card->mpa_tx.start_port, card->mpa_tx.ports); |
1406 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, | |
1407 | card->mpa_tx.buf_len, | |
1408 | (adapter->ioport | 0x1000 | | |
1409 | (card->mpa_tx.ports << 4)) + | |
1410 | card->mpa_tx.start_port); | |
1411 | ||
1412 | MP_TX_AGGR_BUF_RESET(card); | |
1413 | } | |
1414 | ||
1415 | tx_curr_single: | |
1416 | if (f_send_cur_buf) { | |
1417 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", | |
5dbd326c | 1418 | __func__, port); |
5e6e3a92 BZ |
1419 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, |
1420 | adapter->ioport + port); | |
1421 | } | |
1422 | ||
1423 | if (f_postcopy_cur_buf) { | |
1424 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", | |
5dbd326c | 1425 | __func__); |
5e6e3a92 BZ |
1426 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1427 | } | |
1428 | ||
1429 | return ret; | |
1430 | } | |
1431 | ||
1432 | /* | |
1433 | * This function downloads data from driver to card. | |
1434 | * | |
1435 | * Both commands and data packets are transferred to the card by this | |
1436 | * function. | |
1437 | * | |
1438 | * This function adds the SDIO specific header to the front of the buffer | |
1439 | * before transferring. The header contains the length of the packet and | |
1440 | * the type. The firmware handles the packets based upon this set type. | |
1441 | */ | |
1442 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, | |
d930faee | 1443 | u8 type, struct sk_buff *skb, |
5e6e3a92 BZ |
1444 | struct mwifiex_tx_param *tx_param) |
1445 | { | |
1446 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 1447 | int ret; |
5e6e3a92 BZ |
1448 | u32 buf_block_len; |
1449 | u32 blk_size; | |
1450 | u8 port = CTRL_PORT; | |
d930faee AK |
1451 | u8 *payload = (u8 *)skb->data; |
1452 | u32 pkt_len = skb->len; | |
5e6e3a92 BZ |
1453 | |
1454 | /* Allocate buffer and copy payload */ | |
1455 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; | |
1456 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; | |
1457 | *(u16 *) &payload[0] = (u16) pkt_len; | |
1458 | *(u16 *) &payload[2] = type; | |
1459 | ||
1460 | /* | |
1461 | * This is SDIO specific header | |
1462 | * u16 length, | |
1463 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, | |
1464 | * MWIFIEX_TYPE_EVENT = 3) | |
1465 | */ | |
1466 | if (type == MWIFIEX_TYPE_DATA) { | |
1467 | ret = mwifiex_get_wr_port_data(adapter, &port); | |
1468 | if (ret) { | |
1469 | dev_err(adapter->dev, "%s: no wr_port available\n", | |
5dbd326c | 1470 | __func__); |
5e6e3a92 BZ |
1471 | return ret; |
1472 | } | |
1473 | } else { | |
1474 | adapter->cmd_sent = true; | |
1475 | /* Type must be MWIFIEX_TYPE_CMD */ | |
1476 | ||
1477 | if (pkt_len <= INTF_HEADER_LEN || | |
1478 | pkt_len > MWIFIEX_UPLD_SIZE) | |
1479 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", | |
5dbd326c | 1480 | __func__, payload, pkt_len); |
5e6e3a92 BZ |
1481 | } |
1482 | ||
1483 | /* Transfer data to card */ | |
1484 | pkt_len = buf_block_len * blk_size; | |
1485 | ||
1486 | if (tx_param) | |
1487 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c YAP |
1488 | port, tx_param->next_pkt_len |
1489 | ); | |
5e6e3a92 BZ |
1490 | else |
1491 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c | 1492 | port, 0); |
5e6e3a92 BZ |
1493 | |
1494 | if (ret) { | |
1495 | if (type == MWIFIEX_TYPE_CMD) | |
1496 | adapter->cmd_sent = false; | |
1497 | if (type == MWIFIEX_TYPE_DATA) | |
1498 | adapter->data_sent = false; | |
1499 | } else { | |
1500 | if (type == MWIFIEX_TYPE_DATA) { | |
1501 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1502 | adapter->data_sent = true; | |
1503 | else | |
1504 | adapter->data_sent = false; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | return ret; | |
1509 | } | |
1510 | ||
1511 | /* | |
1512 | * This function allocates the MPA Tx and Rx buffers. | |
1513 | */ | |
1514 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, | |
1515 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) | |
1516 | { | |
1517 | struct sdio_mmc_card *card = adapter->card; | |
1518 | int ret = 0; | |
1519 | ||
1520 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); | |
1521 | if (!card->mpa_tx.buf) { | |
1522 | dev_err(adapter->dev, "could not alloc buffer for MP-A TX\n"); | |
1523 | ret = -1; | |
1524 | goto error; | |
1525 | } | |
1526 | ||
1527 | card->mpa_tx.buf_size = mpa_tx_buf_size; | |
1528 | ||
1529 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); | |
1530 | if (!card->mpa_rx.buf) { | |
1531 | dev_err(adapter->dev, "could not alloc buffer for MP-A RX\n"); | |
1532 | ret = -1; | |
1533 | goto error; | |
1534 | } | |
1535 | ||
1536 | card->mpa_rx.buf_size = mpa_rx_buf_size; | |
1537 | ||
1538 | error: | |
1539 | if (ret) { | |
1540 | kfree(card->mpa_tx.buf); | |
1541 | kfree(card->mpa_rx.buf); | |
1542 | } | |
1543 | ||
1544 | return ret; | |
1545 | } | |
1546 | ||
1547 | /* | |
1548 | * This function unregisters the SDIO device. | |
1549 | * | |
1550 | * The SDIO IRQ is released, the function is disabled and driver | |
1551 | * data is set to null. | |
1552 | */ | |
1553 | static void | |
1554 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1555 | { | |
1556 | struct sdio_mmc_card *card = adapter->card; | |
1557 | ||
1558 | if (adapter->card) { | |
1559 | /* Release the SDIO IRQ */ | |
1560 | sdio_claim_host(card->func); | |
1561 | sdio_release_irq(card->func); | |
1562 | sdio_disable_func(card->func); | |
1563 | sdio_release_host(card->func); | |
1564 | sdio_set_drvdata(card->func, NULL); | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | /* | |
1569 | * This function registers the SDIO device. | |
1570 | * | |
1571 | * SDIO IRQ is claimed, block size is set and driver data is initialized. | |
1572 | */ | |
1573 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1574 | { | |
1575 | int ret = 0; | |
1576 | struct sdio_mmc_card *card = adapter->card; | |
1577 | struct sdio_func *func = card->func; | |
1578 | ||
1579 | /* save adapter pointer in card */ | |
1580 | card->adapter = adapter; | |
1581 | ||
1582 | sdio_claim_host(func); | |
1583 | ||
1584 | /* Request the SDIO IRQ */ | |
1585 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); | |
1586 | if (ret) { | |
1587 | pr_err("claim irq failed: ret=%d\n", ret); | |
1588 | goto disable_func; | |
1589 | } | |
1590 | ||
1591 | /* Set block size */ | |
1592 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); | |
1593 | if (ret) { | |
1594 | pr_err("cannot set SDIO block size\n"); | |
1595 | ret = -1; | |
1596 | goto release_irq; | |
1597 | } | |
1598 | ||
1599 | sdio_release_host(func); | |
1600 | sdio_set_drvdata(func, card); | |
1601 | ||
1602 | adapter->dev = &func->dev; | |
e3bea1c8 BZ |
1603 | |
1604 | switch (func->device) { | |
98e6b9df W |
1605 | case SDIO_DEVICE_ID_MARVELL_8786: |
1606 | strcpy(adapter->fw_name, SD8786_DEFAULT_FW_NAME); | |
1607 | break; | |
e3bea1c8 BZ |
1608 | case SDIO_DEVICE_ID_MARVELL_8797: |
1609 | strcpy(adapter->fw_name, SD8797_DEFAULT_FW_NAME); | |
1610 | break; | |
1611 | case SDIO_DEVICE_ID_MARVELL_8787: | |
1612 | default: | |
1613 | strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME); | |
1614 | break; | |
1615 | } | |
5e6e3a92 BZ |
1616 | |
1617 | return 0; | |
1618 | ||
1619 | release_irq: | |
1620 | sdio_release_irq(func); | |
1621 | disable_func: | |
1622 | sdio_disable_func(func); | |
1623 | sdio_release_host(func); | |
1624 | adapter->card = NULL; | |
1625 | ||
1626 | return -1; | |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * This function initializes the SDIO driver. | |
1631 | * | |
1632 | * The following initializations steps are followed - | |
1633 | * - Read the Host interrupt status register to acknowledge | |
1634 | * the first interrupt got from bootloader | |
1635 | * - Disable host interrupt mask register | |
1636 | * - Get SDIO port | |
5e6e3a92 BZ |
1637 | * - Initialize SDIO variables in card |
1638 | * - Allocate MP registers | |
1639 | * - Allocate MPA Tx and Rx buffers | |
1640 | */ | |
1641 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) | |
1642 | { | |
1643 | struct sdio_mmc_card *card = adapter->card; | |
1644 | int ret; | |
270e58e8 | 1645 | u32 sdio_ireg; |
5e6e3a92 BZ |
1646 | |
1647 | /* | |
1648 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got | |
1649 | * from the bootloader. If we don't do this we get a interrupt | |
1650 | * as soon as we register the irq. | |
1651 | */ | |
1652 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); | |
1653 | ||
1654 | /* Disable host interrupt mask register for SDIO */ | |
1655 | mwifiex_sdio_disable_host_int(adapter); | |
1656 | ||
1657 | /* Get SDIO ioport */ | |
1658 | mwifiex_init_sdio_ioport(adapter); | |
1659 | ||
5e6e3a92 BZ |
1660 | /* Initialize SDIO variables in card */ |
1661 | card->mp_rd_bitmap = 0; | |
1662 | card->mp_wr_bitmap = 0; | |
1663 | card->curr_rd_port = 1; | |
1664 | card->curr_wr_port = 1; | |
1665 | ||
1666 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1667 | ||
1668 | card->mpa_tx.buf_len = 0; | |
1669 | card->mpa_tx.pkt_cnt = 0; | |
1670 | card->mpa_tx.start_port = 0; | |
1671 | ||
7d7ab022 | 1672 | card->mpa_tx.enabled = 1; |
5e6e3a92 BZ |
1673 | card->mpa_tx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
1674 | ||
1675 | card->mpa_rx.buf_len = 0; | |
1676 | card->mpa_rx.pkt_cnt = 0; | |
1677 | card->mpa_rx.start_port = 0; | |
1678 | ||
7d7ab022 | 1679 | card->mpa_rx.enabled = 1; |
5e6e3a92 BZ |
1680 | card->mpa_rx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
1681 | ||
1682 | /* Allocate buffers for SDIO MP-A */ | |
1683 | card->mp_regs = kzalloc(MAX_MP_REGS, GFP_KERNEL); | |
1684 | if (!card->mp_regs) { | |
1685 | dev_err(adapter->dev, "failed to alloc mp_regs\n"); | |
b53575ec | 1686 | return -ENOMEM; |
5e6e3a92 BZ |
1687 | } |
1688 | ||
1689 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, | |
1690 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, | |
1691 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); | |
1692 | if (ret) { | |
1693 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); | |
1694 | kfree(card->mp_regs); | |
1695 | return -1; | |
1696 | } | |
1697 | ||
1698 | return ret; | |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * This function resets the MPA Tx and Rx buffers. | |
1703 | */ | |
1704 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) | |
1705 | { | |
1706 | struct sdio_mmc_card *card = adapter->card; | |
1707 | ||
1708 | MP_TX_AGGR_BUF_RESET(card); | |
1709 | MP_RX_AGGR_BUF_RESET(card); | |
1710 | } | |
1711 | ||
1712 | /* | |
1713 | * This function cleans up the allocated card buffers. | |
1714 | * | |
1715 | * The following are freed by this function - | |
1716 | * - MP registers | |
1717 | * - MPA Tx buffer | |
1718 | * - MPA Rx buffer | |
1719 | */ | |
1720 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) | |
1721 | { | |
1722 | struct sdio_mmc_card *card = adapter->card; | |
1723 | ||
1724 | kfree(card->mp_regs); | |
1725 | kfree(card->mpa_tx.buf); | |
1726 | kfree(card->mpa_rx.buf); | |
1727 | } | |
1728 | ||
1729 | /* | |
1730 | * This function updates the MP end port in card. | |
1731 | */ | |
1732 | static void | |
1733 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) | |
1734 | { | |
1735 | struct sdio_mmc_card *card = adapter->card; | |
1736 | int i; | |
1737 | ||
1738 | card->mp_end_port = port; | |
1739 | ||
1740 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1741 | ||
1742 | for (i = 1; i <= MAX_PORT - card->mp_end_port; i++) | |
1743 | card->mp_data_port_mask &= ~(1 << (MAX_PORT - i)); | |
1744 | ||
1745 | card->curr_wr_port = 1; | |
1746 | ||
1747 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", | |
5dbd326c | 1748 | port, card->mp_data_port_mask); |
5e6e3a92 BZ |
1749 | } |
1750 | ||
1751 | static struct mwifiex_if_ops sdio_ops = { | |
1752 | .init_if = mwifiex_init_sdio, | |
1753 | .cleanup_if = mwifiex_cleanup_sdio, | |
1754 | .check_fw_status = mwifiex_check_fw_status, | |
1755 | .prog_fw = mwifiex_prog_fw_w_helper, | |
1756 | .register_dev = mwifiex_register_dev, | |
1757 | .unregister_dev = mwifiex_unregister_dev, | |
1758 | .enable_int = mwifiex_sdio_enable_host_int, | |
1759 | .process_int_status = mwifiex_process_int_status, | |
1760 | .host_to_card = mwifiex_sdio_host_to_card, | |
1761 | .wakeup = mwifiex_pm_wakeup_card, | |
1762 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1763 | ||
1764 | /* SDIO specific */ | |
1765 | .update_mp_end_port = mwifiex_update_mp_end_port, | |
1766 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, | |
d930faee AK |
1767 | .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, |
1768 | .event_complete = mwifiex_sdio_event_complete, | |
5e6e3a92 BZ |
1769 | }; |
1770 | ||
1771 | /* | |
1772 | * This function initializes the SDIO driver. | |
1773 | * | |
1774 | * This initiates the semaphore and registers the device with | |
1775 | * SDIO bus. | |
1776 | */ | |
1777 | static int | |
1778 | mwifiex_sdio_init_module(void) | |
1779 | { | |
5e6e3a92 BZ |
1780 | sema_init(&add_remove_card_sem, 1); |
1781 | ||
287546df AK |
1782 | /* Clear the flag in case user removes the card. */ |
1783 | user_rmmod = 0; | |
1784 | ||
636c4598 | 1785 | return sdio_register_driver(&mwifiex_sdio); |
5e6e3a92 BZ |
1786 | } |
1787 | ||
1788 | /* | |
1789 | * This function cleans up the SDIO driver. | |
1790 | * | |
1791 | * The following major steps are followed for cleanup - | |
1792 | * - Resume the device if its suspended | |
1793 | * - Disconnect the device if connected | |
1794 | * - Shutdown the firmware | |
1795 | * - Unregister the device from SDIO bus. | |
1796 | */ | |
1797 | static void | |
1798 | mwifiex_sdio_cleanup_module(void) | |
1799 | { | |
287546df AK |
1800 | if (!down_interruptible(&add_remove_card_sem)) |
1801 | up(&add_remove_card_sem); | |
5e6e3a92 | 1802 | |
287546df AK |
1803 | /* Set the flag as user is removing this module. */ |
1804 | user_rmmod = 1; | |
5e6e3a92 | 1805 | |
5e6e3a92 BZ |
1806 | sdio_unregister_driver(&mwifiex_sdio); |
1807 | } | |
1808 | ||
1809 | module_init(mwifiex_sdio_init_module); | |
1810 | module_exit(mwifiex_sdio_cleanup_module); | |
1811 | ||
1812 | MODULE_AUTHOR("Marvell International Ltd."); | |
1813 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); | |
1814 | MODULE_VERSION(SDIO_VERSION); | |
1815 | MODULE_LICENSE("GPL v2"); | |
98e6b9df | 1816 | MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); |
e3bea1c8 BZ |
1817 | MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); |
1818 | MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); |