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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 | 163 | mmc_pm_flag_t pm_flag = 0; |
5e6e3a92 BZ |
164 | int i; |
165 | int ret = 0; | |
166 | ||
167 | if (func) { | |
168 | pm_flag = sdio_get_host_pm_caps(func); | |
169 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", | |
5dbd326c | 170 | sdio_func_id(func), pm_flag); |
5e6e3a92 BZ |
171 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { |
172 | pr_err("%s: cannot remain alive while host is" | |
173 | " suspended\n", sdio_func_id(func)); | |
174 | return -ENOSYS; | |
175 | } | |
176 | ||
177 | card = sdio_get_drvdata(func); | |
178 | if (!card || !card->adapter) { | |
179 | pr_err("suspend: invalid card or adapter\n"); | |
180 | return 0; | |
181 | } | |
182 | } else { | |
183 | pr_err("suspend: sdio_func is not specified\n"); | |
184 | return 0; | |
185 | } | |
186 | ||
187 | adapter = card->adapter; | |
188 | ||
189 | /* Enable the Host Sleep */ | |
dd321acd BZ |
190 | if (!mwifiex_enable_hs(adapter)) { |
191 | dev_err(adapter->dev, "cmd: failed to suspend\n"); | |
192 | return -EFAULT; | |
5e6e3a92 BZ |
193 | } |
194 | ||
dd321acd BZ |
195 | dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n"); |
196 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
197 | ||
5e6e3a92 BZ |
198 | /* Indicate device suspended */ |
199 | adapter->is_suspended = true; | |
200 | ||
201 | for (i = 0; i < adapter->priv_num; i++) | |
202 | netif_carrier_off(adapter->priv[i]->netdev); | |
203 | ||
204 | return ret; | |
205 | } | |
206 | ||
207 | /* | |
208 | * SDIO resume. | |
209 | * | |
210 | * Kernel needs to suspend all functions separately. Therefore all | |
211 | * registered functions must have drivers with suspend and resume | |
212 | * methods. Failing that the kernel simply removes the whole card. | |
213 | * | |
214 | * If already not resumed, this function turns on the traffic and | |
215 | * sends a host sleep cancel request to the firmware. | |
216 | */ | |
217 | static int mwifiex_sdio_resume(struct device *dev) | |
218 | { | |
219 | struct sdio_func *func = dev_to_sdio_func(dev); | |
220 | struct sdio_mmc_card *card; | |
270e58e8 | 221 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
222 | mmc_pm_flag_t pm_flag = 0; |
223 | int i; | |
224 | ||
225 | if (func) { | |
226 | pm_flag = sdio_get_host_pm_caps(func); | |
227 | card = sdio_get_drvdata(func); | |
228 | if (!card || !card->adapter) { | |
229 | pr_err("resume: invalid card or adapter\n"); | |
230 | return 0; | |
231 | } | |
232 | } else { | |
233 | pr_err("resume: sdio_func is not specified\n"); | |
234 | return 0; | |
235 | } | |
236 | ||
237 | adapter = card->adapter; | |
238 | ||
239 | if (!adapter->is_suspended) { | |
240 | dev_warn(adapter->dev, "device already resumed\n"); | |
241 | return 0; | |
242 | } | |
243 | ||
244 | adapter->is_suspended = false; | |
245 | ||
246 | for (i = 0; i < adapter->priv_num; i++) | |
247 | if (adapter->priv[i]->media_connected) | |
248 | netif_carrier_on(adapter->priv[i]->netdev); | |
249 | ||
250 | /* Disable Host Sleep */ | |
251 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
600f5d90 | 252 | MWIFIEX_ASYNC_CMD); |
5e6e3a92 BZ |
253 | |
254 | return 0; | |
255 | } | |
256 | ||
98e6b9df W |
257 | /* Device ID for SD8786 */ |
258 | #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) | |
5e6e3a92 BZ |
259 | /* Device ID for SD8787 */ |
260 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) | |
e3bea1c8 BZ |
261 | /* Device ID for SD8797 */ |
262 | #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) | |
5e6e3a92 BZ |
263 | |
264 | /* WLAN IDs */ | |
265 | static const struct sdio_device_id mwifiex_ids[] = { | |
98e6b9df | 266 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786)}, |
5e6e3a92 | 267 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)}, |
e3bea1c8 | 268 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797)}, |
5e6e3a92 BZ |
269 | {}, |
270 | }; | |
271 | ||
272 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); | |
273 | ||
274 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { | |
275 | .suspend = mwifiex_sdio_suspend, | |
276 | .resume = mwifiex_sdio_resume, | |
277 | }; | |
278 | ||
279 | static struct sdio_driver mwifiex_sdio = { | |
280 | .name = "mwifiex_sdio", | |
281 | .id_table = mwifiex_ids, | |
282 | .probe = mwifiex_sdio_probe, | |
283 | .remove = mwifiex_sdio_remove, | |
284 | .drv = { | |
285 | .owner = THIS_MODULE, | |
286 | .pm = &mwifiex_sdio_pm_ops, | |
287 | } | |
288 | }; | |
289 | ||
290 | /* | |
291 | * This function writes data into SDIO card register. | |
292 | */ | |
293 | static int | |
294 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u32 data) | |
295 | { | |
296 | struct sdio_mmc_card *card = adapter->card; | |
297 | int ret = -1; | |
298 | ||
299 | sdio_claim_host(card->func); | |
300 | sdio_writeb(card->func, (u8) data, reg, &ret); | |
301 | sdio_release_host(card->func); | |
302 | ||
303 | return ret; | |
304 | } | |
305 | ||
306 | /* | |
307 | * This function reads data from SDIO card register. | |
308 | */ | |
309 | static int | |
310 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u32 *data) | |
311 | { | |
312 | struct sdio_mmc_card *card = adapter->card; | |
313 | int ret = -1; | |
314 | u8 val; | |
315 | ||
316 | sdio_claim_host(card->func); | |
317 | val = sdio_readb(card->func, reg, &ret); | |
318 | sdio_release_host(card->func); | |
319 | ||
320 | *data = val; | |
321 | ||
322 | return ret; | |
323 | } | |
324 | ||
325 | /* | |
326 | * This function writes multiple data into SDIO card memory. | |
327 | * | |
328 | * This does not work in suspended mode. | |
329 | */ | |
330 | static int | |
331 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, | |
572e8f3e | 332 | u8 *buffer, u32 pkt_len, u32 port) |
5e6e3a92 BZ |
333 | { |
334 | struct sdio_mmc_card *card = adapter->card; | |
335 | int ret = -1; | |
336 | u8 blk_mode = | |
337 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; | |
338 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; | |
339 | u32 blk_cnt = | |
340 | (blk_mode == | |
341 | BLOCK_MODE) ? (pkt_len / | |
342 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; | |
343 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); | |
344 | ||
345 | if (adapter->is_suspended) { | |
346 | dev_err(adapter->dev, | |
347 | "%s: not allowed while suspended\n", __func__); | |
348 | return -1; | |
349 | } | |
350 | ||
351 | sdio_claim_host(card->func); | |
352 | ||
353 | if (!sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size)) | |
354 | ret = 0; | |
355 | ||
356 | sdio_release_host(card->func); | |
357 | ||
358 | return ret; | |
359 | } | |
360 | ||
361 | /* | |
362 | * This function reads multiple data from SDIO card memory. | |
363 | */ | |
572e8f3e AK |
364 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
365 | u32 len, u32 port, u8 claim) | |
5e6e3a92 BZ |
366 | { |
367 | struct sdio_mmc_card *card = adapter->card; | |
368 | int ret = -1; | |
5dbd326c YAP |
369 | u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE |
370 | : BLOCK_MODE; | |
5e6e3a92 | 371 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
5dbd326c YAP |
372 | u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) |
373 | : len; | |
5e6e3a92 BZ |
374 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
375 | ||
376 | if (claim) | |
377 | sdio_claim_host(card->func); | |
378 | ||
379 | if (!sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size)) | |
380 | ret = 0; | |
381 | ||
382 | if (claim) | |
383 | sdio_release_host(card->func); | |
384 | ||
385 | return ret; | |
386 | } | |
387 | ||
388 | /* | |
389 | * This function wakes up the card. | |
390 | * | |
391 | * A host power up command is written to the card configuration | |
392 | * register to wake up the card. | |
393 | */ | |
394 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) | |
395 | { | |
5e6e3a92 | 396 | dev_dbg(adapter->dev, "event: wakeup device...\n"); |
5e6e3a92 | 397 | |
636c4598 | 398 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
5e6e3a92 BZ |
399 | } |
400 | ||
401 | /* | |
402 | * This function is called after the card has woken up. | |
403 | * | |
404 | * The card configuration register is reset. | |
405 | */ | |
406 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) | |
407 | { | |
5e6e3a92 | 408 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); |
5e6e3a92 | 409 | |
636c4598 | 410 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
5e6e3a92 BZ |
411 | } |
412 | ||
413 | /* | |
414 | * This function initializes the IO ports. | |
415 | * | |
416 | * The following operations are performed - | |
417 | * - Read the IO ports (0, 1 and 2) | |
418 | * - Set host interrupt Reset-To-Read to clear | |
419 | * - Set auto re-enable interrupt | |
420 | */ | |
421 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) | |
422 | { | |
423 | u32 reg; | |
424 | ||
425 | adapter->ioport = 0; | |
426 | ||
427 | /* Read the IO port */ | |
428 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) | |
429 | adapter->ioport |= (reg & 0xff); | |
430 | else | |
431 | return -1; | |
432 | ||
433 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) | |
434 | adapter->ioport |= ((reg & 0xff) << 8); | |
435 | else | |
436 | return -1; | |
437 | ||
438 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) | |
439 | adapter->ioport |= ((reg & 0xff) << 16); | |
440 | else | |
441 | return -1; | |
442 | ||
443 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); | |
444 | ||
445 | /* Set Host interrupt reset to read to clear */ | |
446 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) | |
447 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, | |
448 | reg | SDIO_INT_MASK); | |
449 | else | |
450 | return -1; | |
451 | ||
452 | /* Dnld/Upld ready set to auto reset */ | |
453 | if (!mwifiex_read_reg(adapter, CARD_MISC_CFG_REG, ®)) | |
454 | mwifiex_write_reg(adapter, CARD_MISC_CFG_REG, | |
455 | reg | AUTO_RE_ENABLE_INT); | |
456 | else | |
457 | return -1; | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
462 | /* | |
463 | * This function sends data to the card. | |
464 | */ | |
465 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, | |
466 | u8 *payload, u32 pkt_len, u32 port) | |
467 | { | |
468 | u32 i = 0; | |
270e58e8 | 469 | int ret; |
5e6e3a92 BZ |
470 | |
471 | do { | |
572e8f3e | 472 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
5e6e3a92 BZ |
473 | if (ret) { |
474 | i++; | |
475 | dev_err(adapter->dev, "host_to_card, write iomem" | |
476 | " (%d) failed: %d\n", i, ret); | |
5dbd326c | 477 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
5e6e3a92 BZ |
478 | dev_err(adapter->dev, "write CFG reg failed\n"); |
479 | ||
480 | ret = -1; | |
481 | if (i > MAX_WRITE_IOMEM_RETRY) | |
482 | return ret; | |
483 | } | |
484 | } while (ret == -1); | |
485 | ||
486 | return ret; | |
487 | } | |
488 | ||
489 | /* | |
490 | * This function gets the read port. | |
491 | * | |
492 | * If control port bit is set in MP read bitmap, the control port | |
493 | * is returned, otherwise the current read port is returned and | |
494 | * the value is increased (provided it does not reach the maximum | |
495 | * limit, in which case it is reset to 1) | |
496 | */ | |
497 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) | |
498 | { | |
499 | struct sdio_mmc_card *card = adapter->card; | |
500 | u16 rd_bitmap = card->mp_rd_bitmap; | |
501 | ||
502 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap); | |
503 | ||
504 | if (!(rd_bitmap & (CTRL_PORT_MASK | DATA_PORT_MASK))) | |
505 | return -1; | |
506 | ||
507 | if (card->mp_rd_bitmap & CTRL_PORT_MASK) { | |
508 | card->mp_rd_bitmap &= (u16) (~CTRL_PORT_MASK); | |
509 | *port = CTRL_PORT; | |
510 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%04x\n", | |
5dbd326c | 511 | *port, card->mp_rd_bitmap); |
5e6e3a92 BZ |
512 | } else { |
513 | if (card->mp_rd_bitmap & (1 << card->curr_rd_port)) { | |
5dbd326c YAP |
514 | card->mp_rd_bitmap &= (u16) |
515 | (~(1 << card->curr_rd_port)); | |
5e6e3a92 BZ |
516 | *port = card->curr_rd_port; |
517 | ||
518 | if (++card->curr_rd_port == MAX_PORT) | |
519 | card->curr_rd_port = 1; | |
520 | } else { | |
521 | return -1; | |
522 | } | |
523 | ||
524 | dev_dbg(adapter->dev, | |
525 | "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n", | |
5dbd326c | 526 | *port, rd_bitmap, card->mp_rd_bitmap); |
5e6e3a92 BZ |
527 | } |
528 | return 0; | |
529 | } | |
530 | ||
531 | /* | |
532 | * This function gets the write port for data. | |
533 | * | |
534 | * The current write port is returned if available and the value is | |
535 | * increased (provided it does not reach the maximum limit, in which | |
536 | * case it is reset to 1) | |
537 | */ | |
538 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u8 *port) | |
539 | { | |
540 | struct sdio_mmc_card *card = adapter->card; | |
541 | u16 wr_bitmap = card->mp_wr_bitmap; | |
542 | ||
543 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap); | |
544 | ||
545 | if (!(wr_bitmap & card->mp_data_port_mask)) | |
546 | return -1; | |
547 | ||
548 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { | |
549 | card->mp_wr_bitmap &= (u16) (~(1 << card->curr_wr_port)); | |
550 | *port = card->curr_wr_port; | |
551 | if (++card->curr_wr_port == card->mp_end_port) | |
552 | card->curr_wr_port = 1; | |
553 | } else { | |
554 | adapter->data_sent = true; | |
555 | return -EBUSY; | |
556 | } | |
557 | ||
558 | if (*port == CTRL_PORT) { | |
559 | dev_err(adapter->dev, "invalid data port=%d cur port=%d" | |
5dbd326c YAP |
560 | " mp_wr_bitmap=0x%04x -> 0x%04x\n", |
561 | *port, card->curr_wr_port, wr_bitmap, | |
562 | card->mp_wr_bitmap); | |
5e6e3a92 BZ |
563 | return -1; |
564 | } | |
565 | ||
566 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n", | |
5dbd326c | 567 | *port, wr_bitmap, card->mp_wr_bitmap); |
5e6e3a92 BZ |
568 | |
569 | return 0; | |
570 | } | |
571 | ||
572 | /* | |
573 | * This function polls the card status. | |
574 | */ | |
575 | static int | |
576 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) | |
577 | { | |
578 | u32 tries; | |
270e58e8 | 579 | u32 cs; |
5e6e3a92 BZ |
580 | |
581 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
582 | if (mwifiex_read_reg(adapter, CARD_STATUS_REG, &cs)) | |
583 | break; | |
584 | else if ((cs & bits) == bits) | |
585 | return 0; | |
586 | ||
e7891ba2 | 587 | usleep_range(10, 20); |
5e6e3a92 BZ |
588 | } |
589 | ||
5dbd326c YAP |
590 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries); |
591 | ||
5e6e3a92 BZ |
592 | return -1; |
593 | } | |
594 | ||
595 | /* | |
596 | * This function reads the firmware status. | |
597 | */ | |
598 | static int | |
599 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) | |
600 | { | |
270e58e8 | 601 | u32 fws0, fws1; |
5e6e3a92 BZ |
602 | |
603 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS0_REG, &fws0)) | |
604 | return -1; | |
605 | ||
606 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS1_REG, &fws1)) | |
607 | return -1; | |
608 | ||
609 | *dat = (u16) ((fws1 << 8) | fws0); | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
614 | /* | |
615 | * This function disables the host interrupt. | |
616 | * | |
617 | * The host interrupt mask is read, the disable bit is reset and | |
618 | * written back to the card host interrupt mask register. | |
619 | */ | |
620 | static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) | |
621 | { | |
270e58e8 | 622 | u32 host_int_mask; |
5e6e3a92 BZ |
623 | |
624 | /* Read back the host_int_mask register */ | |
625 | if (mwifiex_read_reg(adapter, HOST_INT_MASK_REG, &host_int_mask)) | |
626 | return -1; | |
627 | ||
628 | /* Update with the mask and write back to the register */ | |
629 | host_int_mask &= ~HOST_INT_DISABLE; | |
630 | ||
631 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, host_int_mask)) { | |
632 | dev_err(adapter->dev, "disable host interrupt failed\n"); | |
633 | return -1; | |
634 | } | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | /* | |
640 | * This function enables the host interrupt. | |
641 | * | |
642 | * The host interrupt enable mask is written to the card | |
643 | * host interrupt mask register. | |
644 | */ | |
645 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) | |
646 | { | |
647 | /* Simply write the mask to the register */ | |
648 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, HOST_INT_ENABLE)) { | |
649 | dev_err(adapter->dev, "enable host interrupt failed\n"); | |
650 | return -1; | |
651 | } | |
652 | return 0; | |
653 | } | |
654 | ||
655 | /* | |
656 | * This function sends a data buffer to the card. | |
657 | */ | |
658 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, | |
659 | u32 *type, u8 *buffer, | |
660 | u32 npayload, u32 ioport) | |
661 | { | |
270e58e8 | 662 | int ret; |
5e6e3a92 BZ |
663 | u32 nb; |
664 | ||
665 | if (!buffer) { | |
666 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); | |
667 | return -1; | |
668 | } | |
669 | ||
572e8f3e | 670 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
5e6e3a92 BZ |
671 | |
672 | if (ret) { | |
673 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, | |
5dbd326c | 674 | ret); |
5e6e3a92 BZ |
675 | return -1; |
676 | } | |
677 | ||
678 | nb = le16_to_cpu(*(__le16 *) (buffer)); | |
679 | if (nb > npayload) { | |
5dbd326c YAP |
680 | dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n", |
681 | __func__, nb, npayload); | |
5e6e3a92 BZ |
682 | return -1; |
683 | } | |
684 | ||
685 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); | |
686 | ||
687 | return ret; | |
688 | } | |
689 | ||
690 | /* | |
691 | * This function downloads the firmware to the card. | |
692 | * | |
693 | * Firmware is downloaded to the card in blocks. Every block download | |
694 | * is tested for CRC errors, and retried a number of times before | |
695 | * returning failure. | |
696 | */ | |
697 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, | |
698 | struct mwifiex_fw_image *fw) | |
699 | { | |
270e58e8 | 700 | int ret; |
5e6e3a92 BZ |
701 | u8 *firmware = fw->fw_buf; |
702 | u32 firmware_len = fw->fw_len; | |
703 | u32 offset = 0; | |
704 | u32 base0, base1; | |
705 | u8 *fwbuf; | |
706 | u16 len = 0; | |
270e58e8 | 707 | u32 txlen, tx_blocks = 0, tries; |
5e6e3a92 BZ |
708 | u32 i = 0; |
709 | ||
710 | if (!firmware_len) { | |
5dbd326c YAP |
711 | dev_err(adapter->dev, |
712 | "firmware image not found! Terminating download\n"); | |
5e6e3a92 BZ |
713 | return -1; |
714 | } | |
715 | ||
716 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", | |
5dbd326c | 717 | firmware_len); |
5e6e3a92 BZ |
718 | |
719 | /* Assume that the allocated buffer is 8-byte aligned */ | |
720 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); | |
0d2e7a5c | 721 | if (!fwbuf) |
b53575ec | 722 | return -ENOMEM; |
5e6e3a92 BZ |
723 | |
724 | /* Perform firmware data transfer */ | |
725 | do { | |
726 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY | |
727 | bits */ | |
728 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | | |
729 | DN_LD_CARD_RDY); | |
730 | if (ret) { | |
731 | dev_err(adapter->dev, "FW download with helper:" | |
5dbd326c | 732 | " poll status timeout @ %d\n", offset); |
5e6e3a92 BZ |
733 | goto done; |
734 | } | |
735 | ||
736 | /* More data? */ | |
737 | if (offset >= firmware_len) | |
738 | break; | |
739 | ||
740 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
741 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_0, | |
742 | &base0); | |
743 | if (ret) { | |
5dbd326c YAP |
744 | dev_err(adapter->dev, |
745 | "dev BASE0 register read failed: " | |
746 | "base0=%#04X(%d). Terminating dnld\n", | |
747 | base0, base0); | |
5e6e3a92 BZ |
748 | goto done; |
749 | } | |
750 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_1, | |
751 | &base1); | |
752 | if (ret) { | |
5dbd326c YAP |
753 | dev_err(adapter->dev, |
754 | "dev BASE1 register read failed: " | |
755 | "base1=%#04X(%d). Terminating dnld\n", | |
756 | base1, base1); | |
5e6e3a92 BZ |
757 | goto done; |
758 | } | |
759 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); | |
760 | ||
761 | if (len) | |
762 | break; | |
763 | ||
e7891ba2 | 764 | usleep_range(10, 20); |
5e6e3a92 BZ |
765 | } |
766 | ||
767 | if (!len) { | |
768 | break; | |
769 | } else if (len > MWIFIEX_UPLD_SIZE) { | |
5dbd326c YAP |
770 | dev_err(adapter->dev, |
771 | "FW dnld failed @ %d, invalid length %d\n", | |
772 | offset, len); | |
5e6e3a92 BZ |
773 | ret = -1; |
774 | goto done; | |
775 | } | |
776 | ||
777 | txlen = len; | |
778 | ||
779 | if (len & BIT(0)) { | |
780 | i++; | |
781 | if (i > MAX_WRITE_IOMEM_RETRY) { | |
5dbd326c YAP |
782 | dev_err(adapter->dev, |
783 | "FW dnld failed @ %d, over max retry\n", | |
784 | offset); | |
5e6e3a92 BZ |
785 | ret = -1; |
786 | goto done; | |
787 | } | |
788 | dev_err(adapter->dev, "CRC indicated by the helper:" | |
5dbd326c | 789 | " len = 0x%04X, txlen = %d\n", len, txlen); |
5e6e3a92 BZ |
790 | len &= ~BIT(0); |
791 | /* Setting this to 0 to resend from same offset */ | |
792 | txlen = 0; | |
793 | } else { | |
794 | i = 0; | |
795 | ||
796 | /* Set blocksize to transfer - checking for last | |
797 | block */ | |
798 | if (firmware_len - offset < txlen) | |
799 | txlen = firmware_len - offset; | |
800 | ||
5dbd326c YAP |
801 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) |
802 | / MWIFIEX_SDIO_BLOCK_SIZE; | |
5e6e3a92 BZ |
803 | |
804 | /* Copy payload to buffer */ | |
805 | memmove(fwbuf, &firmware[offset], txlen); | |
806 | } | |
807 | ||
808 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * | |
809 | MWIFIEX_SDIO_BLOCK_SIZE, | |
572e8f3e | 810 | adapter->ioport); |
5e6e3a92 | 811 | if (ret) { |
5dbd326c YAP |
812 | dev_err(adapter->dev, |
813 | "FW download, write iomem (%d) failed @ %d\n", | |
814 | i, offset); | |
5e6e3a92 BZ |
815 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
816 | dev_err(adapter->dev, "write CFG reg failed\n"); | |
817 | ||
818 | ret = -1; | |
819 | goto done; | |
820 | } | |
821 | ||
822 | offset += txlen; | |
823 | } while (true); | |
824 | ||
825 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", | |
5dbd326c | 826 | offset); |
5e6e3a92 BZ |
827 | |
828 | ret = 0; | |
829 | done: | |
830 | kfree(fwbuf); | |
831 | return ret; | |
832 | } | |
833 | ||
834 | /* | |
835 | * This function checks the firmware status in card. | |
836 | * | |
837 | * The winner interface is also determined by this function. | |
838 | */ | |
839 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, | |
d930faee | 840 | u32 poll_num) |
5e6e3a92 BZ |
841 | { |
842 | int ret = 0; | |
843 | u16 firmware_stat; | |
844 | u32 tries; | |
845 | u32 winner_status; | |
846 | ||
847 | /* Wait for firmware initialization event */ | |
848 | for (tries = 0; tries < poll_num; tries++) { | |
849 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); | |
850 | if (ret) | |
851 | continue; | |
d930faee | 852 | if (firmware_stat == FIRMWARE_READY_SDIO) { |
5e6e3a92 BZ |
853 | ret = 0; |
854 | break; | |
855 | } else { | |
856 | mdelay(100); | |
857 | ret = -1; | |
858 | } | |
859 | } | |
860 | ||
d930faee | 861 | if (ret) { |
5e6e3a92 BZ |
862 | if (mwifiex_read_reg |
863 | (adapter, CARD_FW_STATUS0_REG, &winner_status)) | |
864 | winner_status = 0; | |
865 | ||
866 | if (winner_status) | |
d930faee | 867 | adapter->winner = 0; |
5e6e3a92 | 868 | else |
d930faee | 869 | adapter->winner = 1; |
5e6e3a92 BZ |
870 | } |
871 | return ret; | |
872 | } | |
873 | ||
874 | /* | |
875 | * This function reads the interrupt status from card. | |
876 | */ | |
877 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) | |
878 | { | |
879 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 880 | u32 sdio_ireg; |
5e6e3a92 BZ |
881 | unsigned long flags; |
882 | ||
883 | if (mwifiex_read_data_sync(adapter, card->mp_regs, MAX_MP_REGS, | |
572e8f3e | 884 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, |
5e6e3a92 BZ |
885 | 0)) { |
886 | dev_err(adapter->dev, "read mp_regs failed\n"); | |
887 | return; | |
888 | } | |
889 | ||
890 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; | |
891 | if (sdio_ireg) { | |
892 | /* | |
893 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
894 | * Clear the interrupt status register | |
895 | */ | |
896 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); | |
897 | spin_lock_irqsave(&adapter->int_lock, flags); | |
898 | adapter->int_status |= sdio_ireg; | |
899 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
900 | } | |
5e6e3a92 BZ |
901 | } |
902 | ||
903 | /* | |
904 | * SDIO interrupt handler. | |
905 | * | |
601216e1 BZ |
906 | * This function reads the interrupt status from firmware and handles |
907 | * the interrupt in current thread (ksdioirqd) right away. | |
5e6e3a92 BZ |
908 | */ |
909 | static void | |
910 | mwifiex_sdio_interrupt(struct sdio_func *func) | |
911 | { | |
912 | struct mwifiex_adapter *adapter; | |
913 | struct sdio_mmc_card *card; | |
914 | ||
915 | card = sdio_get_drvdata(func); | |
916 | if (!card || !card->adapter) { | |
917 | pr_debug("int: func=%p card=%p adapter=%p\n", | |
5dbd326c | 918 | func, card, card ? card->adapter : NULL); |
5e6e3a92 BZ |
919 | return; |
920 | } | |
921 | adapter = card->adapter; | |
922 | ||
923 | if (adapter->surprise_removed) | |
924 | return; | |
925 | ||
926 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) | |
927 | adapter->ps_state = PS_STATE_AWAKE; | |
928 | ||
929 | mwifiex_interrupt_status(adapter); | |
601216e1 | 930 | mwifiex_main_process(adapter); |
5e6e3a92 BZ |
931 | } |
932 | ||
933 | /* | |
934 | * This function decodes a received packet. | |
935 | * | |
936 | * Based on the type, the packet is treated as either a data, or | |
937 | * a command response, or an event, and the correct handler | |
938 | * function is invoked. | |
939 | */ | |
940 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, | |
941 | struct sk_buff *skb, u32 upld_typ) | |
942 | { | |
943 | u8 *cmd_buf; | |
944 | ||
945 | skb_pull(skb, INTF_HEADER_LEN); | |
946 | ||
947 | switch (upld_typ) { | |
948 | case MWIFIEX_TYPE_DATA: | |
949 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); | |
950 | mwifiex_handle_rx_packet(adapter, skb); | |
951 | break; | |
952 | ||
953 | case MWIFIEX_TYPE_CMD: | |
954 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); | |
955 | /* take care of curr_cmd = NULL case */ | |
956 | if (!adapter->curr_cmd) { | |
957 | cmd_buf = adapter->upld_buf; | |
958 | ||
959 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) | |
960 | mwifiex_process_sleep_confirm_resp(adapter, | |
5dbd326c YAP |
961 | skb->data, |
962 | skb->len); | |
5e6e3a92 | 963 | |
5dbd326c YAP |
964 | memcpy(cmd_buf, skb->data, |
965 | min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, | |
966 | skb->len)); | |
5e6e3a92 BZ |
967 | |
968 | dev_kfree_skb_any(skb); | |
969 | } else { | |
970 | adapter->cmd_resp_received = true; | |
971 | adapter->curr_cmd->resp_skb = skb; | |
972 | } | |
973 | break; | |
974 | ||
975 | case MWIFIEX_TYPE_EVENT: | |
976 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); | |
977 | adapter->event_cause = *(u32 *) skb->data; | |
978 | ||
5e6e3a92 | 979 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) |
e80c81dc AK |
980 | memcpy(adapter->event_body, |
981 | skb->data + MWIFIEX_EVENT_HEADER_LEN, | |
982 | skb->len); | |
5e6e3a92 BZ |
983 | |
984 | /* event cause has been saved to adapter->event_cause */ | |
985 | adapter->event_received = true; | |
986 | adapter->event_skb = skb; | |
987 | ||
988 | break; | |
989 | ||
990 | default: | |
991 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); | |
992 | dev_kfree_skb_any(skb); | |
993 | break; | |
994 | } | |
995 | ||
996 | return 0; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * This function transfers received packets from card to driver, performing | |
1001 | * aggregation if required. | |
1002 | * | |
1003 | * For data received on control port, or if aggregation is disabled, the | |
1004 | * received buffers are uploaded as separate packets. However, if aggregation | |
1005 | * is enabled and required, the buffers are copied onto an aggregation buffer, | |
1006 | * provided there is space left, processed and finally uploaded. | |
1007 | */ | |
1008 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, | |
1009 | struct sk_buff *skb, u8 port) | |
1010 | { | |
1011 | struct sdio_mmc_card *card = adapter->card; | |
1012 | s32 f_do_rx_aggr = 0; | |
1013 | s32 f_do_rx_cur = 0; | |
1014 | s32 f_aggr_cur = 0; | |
1015 | struct sk_buff *skb_deaggr; | |
270e58e8 | 1016 | u32 pind; |
5e6e3a92 BZ |
1017 | u32 pkt_len, pkt_type = 0; |
1018 | u8 *curr_ptr; | |
1019 | u32 rx_len = skb->len; | |
1020 | ||
1021 | if (port == CTRL_PORT) { | |
1022 | /* Read the command Resp without aggr */ | |
1023 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " | |
5dbd326c | 1024 | "response\n", __func__); |
5e6e3a92 BZ |
1025 | |
1026 | f_do_rx_cur = 1; | |
1027 | goto rx_curr_single; | |
1028 | } | |
1029 | ||
1030 | if (!card->mpa_rx.enabled) { | |
1031 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", | |
5dbd326c | 1032 | __func__); |
5e6e3a92 BZ |
1033 | |
1034 | f_do_rx_cur = 1; | |
1035 | goto rx_curr_single; | |
1036 | } | |
1037 | ||
1038 | if (card->mp_rd_bitmap & (~((u16) CTRL_PORT_MASK))) { | |
1039 | /* Some more data RX pending */ | |
1040 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); | |
1041 | ||
1042 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1043 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { | |
1044 | f_aggr_cur = 1; | |
1045 | } else { | |
1046 | /* No room in Aggr buf, do rx aggr now */ | |
1047 | f_do_rx_aggr = 1; | |
1048 | f_do_rx_cur = 1; | |
1049 | } | |
1050 | } else { | |
1051 | /* Rx aggr not in progress */ | |
1052 | f_aggr_cur = 1; | |
1053 | } | |
1054 | ||
1055 | } else { | |
1056 | /* No more data RX pending */ | |
1057 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); | |
1058 | ||
1059 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1060 | f_do_rx_aggr = 1; | |
1061 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) | |
1062 | f_aggr_cur = 1; | |
1063 | else | |
1064 | /* No room in Aggr buf, do rx aggr now */ | |
1065 | f_do_rx_cur = 1; | |
1066 | } else { | |
1067 | f_do_rx_cur = 1; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | if (f_aggr_cur) { | |
1072 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); | |
1073 | /* Curr pkt can be aggregated */ | |
1074 | MP_RX_AGGR_SETUP(card, skb, port); | |
1075 | ||
1076 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || | |
1077 | MP_RX_AGGR_PORT_LIMIT_REACHED(card)) { | |
1078 | dev_dbg(adapter->dev, "info: %s: aggregated packet " | |
5dbd326c | 1079 | "limit reached\n", __func__); |
5e6e3a92 BZ |
1080 | /* No more pkts allowed in Aggr buf, rx it */ |
1081 | f_do_rx_aggr = 1; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | if (f_do_rx_aggr) { | |
1086 | /* do aggr RX now */ | |
1087 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", | |
5dbd326c | 1088 | card->mpa_rx.pkt_cnt); |
5e6e3a92 BZ |
1089 | |
1090 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, | |
1091 | card->mpa_rx.buf_len, | |
1092 | (adapter->ioport | 0x1000 | | |
1093 | (card->mpa_rx.ports << 4)) + | |
572e8f3e | 1094 | card->mpa_rx.start_port, 1)) |
17a60b48 | 1095 | goto error; |
5e6e3a92 BZ |
1096 | |
1097 | curr_ptr = card->mpa_rx.buf; | |
1098 | ||
1099 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1100 | ||
1101 | /* get curr PKT len & type */ | |
1102 | pkt_len = *(u16 *) &curr_ptr[0]; | |
1103 | pkt_type = *(u16 *) &curr_ptr[2]; | |
1104 | ||
1105 | /* copy pkt to deaggr buf */ | |
1106 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1107 | ||
1108 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= | |
1109 | card->mpa_rx.len_arr[pind])) { | |
1110 | ||
1111 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); | |
1112 | ||
1113 | skb_trim(skb_deaggr, pkt_len); | |
1114 | ||
1115 | /* Process de-aggr packet */ | |
1116 | mwifiex_decode_rx_packet(adapter, skb_deaggr, | |
1117 | pkt_type); | |
1118 | } else { | |
1119 | dev_err(adapter->dev, "wrong aggr pkt:" | |
1120 | " type=%d len=%d max_len=%d\n", | |
1121 | pkt_type, pkt_len, | |
1122 | card->mpa_rx.len_arr[pind]); | |
1123 | dev_kfree_skb_any(skb_deaggr); | |
1124 | } | |
1125 | curr_ptr += card->mpa_rx.len_arr[pind]; | |
1126 | } | |
1127 | MP_RX_AGGR_BUF_RESET(card); | |
1128 | } | |
1129 | ||
1130 | rx_curr_single: | |
1131 | if (f_do_rx_cur) { | |
1132 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", | |
1133 | port, rx_len); | |
1134 | ||
1135 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, | |
1136 | skb->data, skb->len, | |
1137 | adapter->ioport + port)) | |
17a60b48 | 1138 | goto error; |
5e6e3a92 BZ |
1139 | |
1140 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); | |
1141 | } | |
1142 | ||
1143 | return 0; | |
17a60b48 AP |
1144 | |
1145 | error: | |
1146 | if (MP_RX_AGGR_IN_PROGRESS(card)) { | |
1147 | /* Multiport-aggregation transfer failed - cleanup */ | |
1148 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { | |
1149 | /* copy pkt to deaggr buf */ | |
1150 | skb_deaggr = card->mpa_rx.skb_arr[pind]; | |
1151 | dev_kfree_skb_any(skb_deaggr); | |
1152 | } | |
1153 | MP_RX_AGGR_BUF_RESET(card); | |
1154 | } | |
1155 | ||
1156 | if (f_do_rx_cur) | |
1157 | /* Single transfer pending. Free curr buff also */ | |
1158 | dev_kfree_skb_any(skb); | |
1159 | ||
1160 | return -1; | |
5e6e3a92 BZ |
1161 | } |
1162 | ||
1163 | /* | |
1164 | * This function checks the current interrupt status. | |
1165 | * | |
1166 | * The following interrupts are checked and handled by this function - | |
1167 | * - Data sent | |
1168 | * - Command sent | |
1169 | * - Packets received | |
1170 | * | |
1171 | * Since the firmware does not generate download ready interrupt if the | |
1172 | * port updated is command port only, command sent interrupt checking | |
1173 | * should be done manually, and for every SDIO interrupt. | |
1174 | * | |
1175 | * In case of Rx packets received, the packets are uploaded from card to | |
1176 | * host and processed accordingly. | |
1177 | */ | |
1178 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) | |
1179 | { | |
1180 | struct sdio_mmc_card *card = adapter->card; | |
1181 | int ret = 0; | |
1182 | u8 sdio_ireg; | |
270e58e8 | 1183 | struct sk_buff *skb; |
5e6e3a92 BZ |
1184 | u8 port = CTRL_PORT; |
1185 | u32 len_reg_l, len_reg_u; | |
1186 | u32 rx_blocks; | |
1187 | u16 rx_len; | |
1188 | unsigned long flags; | |
1189 | ||
1190 | spin_lock_irqsave(&adapter->int_lock, flags); | |
1191 | sdio_ireg = adapter->int_status; | |
1192 | adapter->int_status = 0; | |
1193 | spin_unlock_irqrestore(&adapter->int_lock, flags); | |
1194 | ||
1195 | if (!sdio_ireg) | |
1196 | return ret; | |
1197 | ||
1198 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { | |
1199 | card->mp_wr_bitmap = ((u16) card->mp_regs[WR_BITMAP_U]) << 8; | |
1200 | card->mp_wr_bitmap |= (u16) card->mp_regs[WR_BITMAP_L]; | |
1201 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%04x\n", | |
5dbd326c | 1202 | card->mp_wr_bitmap); |
5e6e3a92 BZ |
1203 | if (adapter->data_sent && |
1204 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { | |
1205 | dev_dbg(adapter->dev, | |
1206 | "info: <--- Tx DONE Interrupt --->\n"); | |
1207 | adapter->data_sent = false; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | /* As firmware will not generate download ready interrupt if the port | |
1212 | updated is command port only, cmd_sent should be done for any SDIO | |
1213 | interrupt. */ | |
1214 | if (adapter->cmd_sent) { | |
1215 | /* Check if firmware has attach buffer at command port and | |
1216 | update just that in wr_bit_map. */ | |
1217 | card->mp_wr_bitmap |= | |
1218 | (u16) card->mp_regs[WR_BITMAP_L] & CTRL_PORT_MASK; | |
1219 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) | |
1220 | adapter->cmd_sent = false; | |
1221 | } | |
1222 | ||
1223 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", | |
5dbd326c | 1224 | adapter->cmd_sent, adapter->data_sent); |
5e6e3a92 BZ |
1225 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { |
1226 | card->mp_rd_bitmap = ((u16) card->mp_regs[RD_BITMAP_U]) << 8; | |
1227 | card->mp_rd_bitmap |= (u16) card->mp_regs[RD_BITMAP_L]; | |
1228 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%04x\n", | |
5dbd326c | 1229 | card->mp_rd_bitmap); |
5e6e3a92 BZ |
1230 | |
1231 | while (true) { | |
1232 | ret = mwifiex_get_rd_port(adapter, &port); | |
1233 | if (ret) { | |
1234 | dev_dbg(adapter->dev, | |
1235 | "info: no more rd_port available\n"); | |
1236 | break; | |
1237 | } | |
1238 | len_reg_l = RD_LEN_P0_L + (port << 1); | |
1239 | len_reg_u = RD_LEN_P0_U + (port << 1); | |
1240 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; | |
1241 | rx_len |= (u16) card->mp_regs[len_reg_l]; | |
1242 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", | |
5dbd326c | 1243 | port, rx_len); |
5e6e3a92 BZ |
1244 | rx_blocks = |
1245 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - | |
1246 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; | |
5dbd326c YAP |
1247 | if (rx_len <= INTF_HEADER_LEN || |
1248 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > | |
1249 | MWIFIEX_RX_DATA_BUF_SIZE) { | |
5e6e3a92 | 1250 | dev_err(adapter->dev, "invalid rx_len=%d\n", |
5dbd326c | 1251 | rx_len); |
5e6e3a92 BZ |
1252 | return -1; |
1253 | } | |
1254 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); | |
1255 | ||
1256 | skb = dev_alloc_skb(rx_len); | |
1257 | ||
1258 | if (!skb) { | |
1259 | dev_err(adapter->dev, "%s: failed to alloc skb", | |
5dbd326c | 1260 | __func__); |
5e6e3a92 BZ |
1261 | return -1; |
1262 | } | |
1263 | ||
1264 | skb_put(skb, rx_len); | |
1265 | ||
1266 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", | |
5dbd326c | 1267 | rx_len, skb->len); |
5e6e3a92 BZ |
1268 | |
1269 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, | |
1270 | port)) { | |
1271 | u32 cr = 0; | |
1272 | ||
1273 | dev_err(adapter->dev, "card_to_host_mpa failed:" | |
5dbd326c | 1274 | " int status=%#x\n", sdio_ireg); |
5e6e3a92 BZ |
1275 | if (mwifiex_read_reg(adapter, |
1276 | CONFIGURATION_REG, &cr)) | |
1277 | dev_err(adapter->dev, | |
5dbd326c | 1278 | "read CFG reg failed\n"); |
5e6e3a92 BZ |
1279 | |
1280 | dev_dbg(adapter->dev, | |
5dbd326c | 1281 | "info: CFG reg val = %d\n", cr); |
5e6e3a92 BZ |
1282 | if (mwifiex_write_reg(adapter, |
1283 | CONFIGURATION_REG, | |
1284 | (cr | 0x04))) | |
1285 | dev_err(adapter->dev, | |
5dbd326c | 1286 | "write CFG reg failed\n"); |
5e6e3a92 BZ |
1287 | |
1288 | dev_dbg(adapter->dev, "info: write success\n"); | |
1289 | if (mwifiex_read_reg(adapter, | |
1290 | CONFIGURATION_REG, &cr)) | |
1291 | dev_err(adapter->dev, | |
5dbd326c | 1292 | "read CFG reg failed\n"); |
5e6e3a92 BZ |
1293 | |
1294 | dev_dbg(adapter->dev, | |
5dbd326c | 1295 | "info: CFG reg val =%x\n", cr); |
5e6e3a92 BZ |
1296 | return -1; |
1297 | } | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | /* | |
1305 | * This function aggregates transmission buffers in driver and downloads | |
1306 | * the aggregated packet to card. | |
1307 | * | |
1308 | * The individual packets are aggregated by copying into an aggregation | |
1309 | * buffer and then downloaded to the card. Previous unsent packets in the | |
1310 | * aggregation buffer are pre-copied first before new packets are added. | |
1311 | * Aggregation is done till there is space left in the aggregation buffer, | |
1312 | * or till new packets are available. | |
1313 | * | |
1314 | * The function will only download the packet to the card when aggregation | |
1315 | * stops, otherwise it will just aggregate the packet in aggregation buffer | |
1316 | * and return. | |
1317 | */ | |
1318 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, | |
1319 | u8 *payload, u32 pkt_len, u8 port, | |
1320 | u32 next_pkt_len) | |
1321 | { | |
1322 | struct sdio_mmc_card *card = adapter->card; | |
1323 | int ret = 0; | |
1324 | s32 f_send_aggr_buf = 0; | |
1325 | s32 f_send_cur_buf = 0; | |
1326 | s32 f_precopy_cur_buf = 0; | |
1327 | s32 f_postcopy_cur_buf = 0; | |
1328 | ||
1329 | if ((!card->mpa_tx.enabled) || (port == CTRL_PORT)) { | |
1330 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", | |
5dbd326c | 1331 | __func__); |
5e6e3a92 BZ |
1332 | |
1333 | f_send_cur_buf = 1; | |
1334 | goto tx_curr_single; | |
1335 | } | |
1336 | ||
1337 | if (next_pkt_len) { | |
1338 | /* More pkt in TX queue */ | |
1339 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", | |
5dbd326c | 1340 | __func__); |
5e6e3a92 BZ |
1341 | |
1342 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1343 | if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card) && | |
1344 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { | |
1345 | f_precopy_cur_buf = 1; | |
1346 | ||
1347 | if (!(card->mp_wr_bitmap & | |
5dbd326c YAP |
1348 | (1 << card->curr_wr_port)) || |
1349 | !MP_TX_AGGR_BUF_HAS_ROOM( | |
1350 | card, pkt_len + next_pkt_len)) | |
5e6e3a92 BZ |
1351 | f_send_aggr_buf = 1; |
1352 | } else { | |
1353 | /* No room in Aggr buf, send it */ | |
1354 | f_send_aggr_buf = 1; | |
1355 | ||
1356 | if (MP_TX_AGGR_PORT_LIMIT_REACHED(card) || | |
1357 | !(card->mp_wr_bitmap & | |
1358 | (1 << card->curr_wr_port))) | |
1359 | f_send_cur_buf = 1; | |
1360 | else | |
1361 | f_postcopy_cur_buf = 1; | |
1362 | } | |
1363 | } else { | |
5dbd326c YAP |
1364 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && |
1365 | (card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
5e6e3a92 BZ |
1366 | f_precopy_cur_buf = 1; |
1367 | else | |
1368 | f_send_cur_buf = 1; | |
1369 | } | |
1370 | } else { | |
1371 | /* Last pkt in TX queue */ | |
1372 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", | |
5dbd326c | 1373 | __func__); |
5e6e3a92 BZ |
1374 | |
1375 | if (MP_TX_AGGR_IN_PROGRESS(card)) { | |
1376 | /* some packs in Aggr buf already */ | |
1377 | f_send_aggr_buf = 1; | |
1378 | ||
1379 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) | |
1380 | f_precopy_cur_buf = 1; | |
1381 | else | |
1382 | /* No room in Aggr buf, send it */ | |
1383 | f_send_cur_buf = 1; | |
1384 | } else { | |
1385 | f_send_cur_buf = 1; | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | if (f_precopy_cur_buf) { | |
1390 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", | |
5dbd326c | 1391 | __func__); |
5e6e3a92 BZ |
1392 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1393 | ||
1394 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || | |
1395 | MP_TX_AGGR_PORT_LIMIT_REACHED(card)) | |
1396 | /* No more pkts allowed in Aggr buf, send it */ | |
1397 | f_send_aggr_buf = 1; | |
1398 | } | |
1399 | ||
1400 | if (f_send_aggr_buf) { | |
1401 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", | |
5dbd326c | 1402 | __func__, |
5e6e3a92 BZ |
1403 | card->mpa_tx.start_port, card->mpa_tx.ports); |
1404 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, | |
1405 | card->mpa_tx.buf_len, | |
1406 | (adapter->ioport | 0x1000 | | |
1407 | (card->mpa_tx.ports << 4)) + | |
1408 | card->mpa_tx.start_port); | |
1409 | ||
1410 | MP_TX_AGGR_BUF_RESET(card); | |
1411 | } | |
1412 | ||
1413 | tx_curr_single: | |
1414 | if (f_send_cur_buf) { | |
1415 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", | |
5dbd326c | 1416 | __func__, port); |
5e6e3a92 BZ |
1417 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, |
1418 | adapter->ioport + port); | |
1419 | } | |
1420 | ||
1421 | if (f_postcopy_cur_buf) { | |
1422 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", | |
5dbd326c | 1423 | __func__); |
5e6e3a92 BZ |
1424 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
1425 | } | |
1426 | ||
1427 | return ret; | |
1428 | } | |
1429 | ||
1430 | /* | |
1431 | * This function downloads data from driver to card. | |
1432 | * | |
1433 | * Both commands and data packets are transferred to the card by this | |
1434 | * function. | |
1435 | * | |
1436 | * This function adds the SDIO specific header to the front of the buffer | |
1437 | * before transferring. The header contains the length of the packet and | |
1438 | * the type. The firmware handles the packets based upon this set type. | |
1439 | */ | |
1440 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, | |
d930faee | 1441 | u8 type, struct sk_buff *skb, |
5e6e3a92 BZ |
1442 | struct mwifiex_tx_param *tx_param) |
1443 | { | |
1444 | struct sdio_mmc_card *card = adapter->card; | |
270e58e8 | 1445 | int ret; |
5e6e3a92 BZ |
1446 | u32 buf_block_len; |
1447 | u32 blk_size; | |
1448 | u8 port = CTRL_PORT; | |
d930faee AK |
1449 | u8 *payload = (u8 *)skb->data; |
1450 | u32 pkt_len = skb->len; | |
5e6e3a92 BZ |
1451 | |
1452 | /* Allocate buffer and copy payload */ | |
1453 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; | |
1454 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; | |
1455 | *(u16 *) &payload[0] = (u16) pkt_len; | |
1456 | *(u16 *) &payload[2] = type; | |
1457 | ||
1458 | /* | |
1459 | * This is SDIO specific header | |
1460 | * u16 length, | |
1461 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, | |
1462 | * MWIFIEX_TYPE_EVENT = 3) | |
1463 | */ | |
1464 | if (type == MWIFIEX_TYPE_DATA) { | |
1465 | ret = mwifiex_get_wr_port_data(adapter, &port); | |
1466 | if (ret) { | |
1467 | dev_err(adapter->dev, "%s: no wr_port available\n", | |
5dbd326c | 1468 | __func__); |
5e6e3a92 BZ |
1469 | return ret; |
1470 | } | |
1471 | } else { | |
1472 | adapter->cmd_sent = true; | |
1473 | /* Type must be MWIFIEX_TYPE_CMD */ | |
1474 | ||
1475 | if (pkt_len <= INTF_HEADER_LEN || | |
1476 | pkt_len > MWIFIEX_UPLD_SIZE) | |
1477 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", | |
5dbd326c | 1478 | __func__, payload, pkt_len); |
5e6e3a92 BZ |
1479 | } |
1480 | ||
1481 | /* Transfer data to card */ | |
1482 | pkt_len = buf_block_len * blk_size; | |
1483 | ||
1484 | if (tx_param) | |
1485 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c YAP |
1486 | port, tx_param->next_pkt_len |
1487 | ); | |
5e6e3a92 BZ |
1488 | else |
1489 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, | |
5dbd326c | 1490 | port, 0); |
5e6e3a92 BZ |
1491 | |
1492 | if (ret) { | |
1493 | if (type == MWIFIEX_TYPE_CMD) | |
1494 | adapter->cmd_sent = false; | |
1495 | if (type == MWIFIEX_TYPE_DATA) | |
1496 | adapter->data_sent = false; | |
1497 | } else { | |
1498 | if (type == MWIFIEX_TYPE_DATA) { | |
1499 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) | |
1500 | adapter->data_sent = true; | |
1501 | else | |
1502 | adapter->data_sent = false; | |
1503 | } | |
1504 | } | |
1505 | ||
1506 | return ret; | |
1507 | } | |
1508 | ||
1509 | /* | |
1510 | * This function allocates the MPA Tx and Rx buffers. | |
1511 | */ | |
1512 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, | |
1513 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) | |
1514 | { | |
1515 | struct sdio_mmc_card *card = adapter->card; | |
1516 | int ret = 0; | |
1517 | ||
1518 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); | |
1519 | if (!card->mpa_tx.buf) { | |
5e6e3a92 BZ |
1520 | ret = -1; |
1521 | goto error; | |
1522 | } | |
1523 | ||
1524 | card->mpa_tx.buf_size = mpa_tx_buf_size; | |
1525 | ||
1526 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); | |
1527 | if (!card->mpa_rx.buf) { | |
5e6e3a92 BZ |
1528 | ret = -1; |
1529 | goto error; | |
1530 | } | |
1531 | ||
1532 | card->mpa_rx.buf_size = mpa_rx_buf_size; | |
1533 | ||
1534 | error: | |
1535 | if (ret) { | |
1536 | kfree(card->mpa_tx.buf); | |
1537 | kfree(card->mpa_rx.buf); | |
1538 | } | |
1539 | ||
1540 | return ret; | |
1541 | } | |
1542 | ||
1543 | /* | |
1544 | * This function unregisters the SDIO device. | |
1545 | * | |
1546 | * The SDIO IRQ is released, the function is disabled and driver | |
1547 | * data is set to null. | |
1548 | */ | |
1549 | static void | |
1550 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) | |
1551 | { | |
1552 | struct sdio_mmc_card *card = adapter->card; | |
1553 | ||
1554 | if (adapter->card) { | |
1555 | /* Release the SDIO IRQ */ | |
1556 | sdio_claim_host(card->func); | |
1557 | sdio_release_irq(card->func); | |
1558 | sdio_disable_func(card->func); | |
1559 | sdio_release_host(card->func); | |
1560 | sdio_set_drvdata(card->func, NULL); | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | /* | |
1565 | * This function registers the SDIO device. | |
1566 | * | |
1567 | * SDIO IRQ is claimed, block size is set and driver data is initialized. | |
1568 | */ | |
1569 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) | |
1570 | { | |
1571 | int ret = 0; | |
1572 | struct sdio_mmc_card *card = adapter->card; | |
1573 | struct sdio_func *func = card->func; | |
1574 | ||
1575 | /* save adapter pointer in card */ | |
1576 | card->adapter = adapter; | |
1577 | ||
1578 | sdio_claim_host(func); | |
1579 | ||
1580 | /* Request the SDIO IRQ */ | |
1581 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); | |
1582 | if (ret) { | |
1583 | pr_err("claim irq failed: ret=%d\n", ret); | |
1584 | goto disable_func; | |
1585 | } | |
1586 | ||
1587 | /* Set block size */ | |
1588 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); | |
1589 | if (ret) { | |
1590 | pr_err("cannot set SDIO block size\n"); | |
1591 | ret = -1; | |
1592 | goto release_irq; | |
1593 | } | |
1594 | ||
1595 | sdio_release_host(func); | |
1596 | sdio_set_drvdata(func, card); | |
1597 | ||
1598 | adapter->dev = &func->dev; | |
e3bea1c8 BZ |
1599 | |
1600 | switch (func->device) { | |
98e6b9df W |
1601 | case SDIO_DEVICE_ID_MARVELL_8786: |
1602 | strcpy(adapter->fw_name, SD8786_DEFAULT_FW_NAME); | |
1603 | break; | |
e3bea1c8 BZ |
1604 | case SDIO_DEVICE_ID_MARVELL_8797: |
1605 | strcpy(adapter->fw_name, SD8797_DEFAULT_FW_NAME); | |
1606 | break; | |
1607 | case SDIO_DEVICE_ID_MARVELL_8787: | |
1608 | default: | |
1609 | strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME); | |
1610 | break; | |
1611 | } | |
5e6e3a92 BZ |
1612 | |
1613 | return 0; | |
1614 | ||
1615 | release_irq: | |
1616 | sdio_release_irq(func); | |
1617 | disable_func: | |
1618 | sdio_disable_func(func); | |
1619 | sdio_release_host(func); | |
1620 | adapter->card = NULL; | |
1621 | ||
1622 | return -1; | |
1623 | } | |
1624 | ||
1625 | /* | |
1626 | * This function initializes the SDIO driver. | |
1627 | * | |
1628 | * The following initializations steps are followed - | |
1629 | * - Read the Host interrupt status register to acknowledge | |
1630 | * the first interrupt got from bootloader | |
1631 | * - Disable host interrupt mask register | |
1632 | * - Get SDIO port | |
5e6e3a92 BZ |
1633 | * - Initialize SDIO variables in card |
1634 | * - Allocate MP registers | |
1635 | * - Allocate MPA Tx and Rx buffers | |
1636 | */ | |
1637 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) | |
1638 | { | |
1639 | struct sdio_mmc_card *card = adapter->card; | |
1640 | int ret; | |
270e58e8 | 1641 | u32 sdio_ireg; |
5e6e3a92 BZ |
1642 | |
1643 | /* | |
1644 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got | |
1645 | * from the bootloader. If we don't do this we get a interrupt | |
1646 | * as soon as we register the irq. | |
1647 | */ | |
1648 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); | |
1649 | ||
1650 | /* Disable host interrupt mask register for SDIO */ | |
1651 | mwifiex_sdio_disable_host_int(adapter); | |
1652 | ||
1653 | /* Get SDIO ioport */ | |
1654 | mwifiex_init_sdio_ioport(adapter); | |
1655 | ||
5e6e3a92 BZ |
1656 | /* Initialize SDIO variables in card */ |
1657 | card->mp_rd_bitmap = 0; | |
1658 | card->mp_wr_bitmap = 0; | |
1659 | card->curr_rd_port = 1; | |
1660 | card->curr_wr_port = 1; | |
1661 | ||
1662 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1663 | ||
1664 | card->mpa_tx.buf_len = 0; | |
1665 | card->mpa_tx.pkt_cnt = 0; | |
1666 | card->mpa_tx.start_port = 0; | |
1667 | ||
7d7ab022 | 1668 | card->mpa_tx.enabled = 1; |
5e6e3a92 BZ |
1669 | card->mpa_tx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
1670 | ||
1671 | card->mpa_rx.buf_len = 0; | |
1672 | card->mpa_rx.pkt_cnt = 0; | |
1673 | card->mpa_rx.start_port = 0; | |
1674 | ||
7d7ab022 | 1675 | card->mpa_rx.enabled = 1; |
5e6e3a92 BZ |
1676 | card->mpa_rx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
1677 | ||
1678 | /* Allocate buffers for SDIO MP-A */ | |
1679 | card->mp_regs = kzalloc(MAX_MP_REGS, GFP_KERNEL); | |
0d2e7a5c | 1680 | if (!card->mp_regs) |
b53575ec | 1681 | return -ENOMEM; |
5e6e3a92 BZ |
1682 | |
1683 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, | |
1684 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, | |
1685 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); | |
1686 | if (ret) { | |
1687 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); | |
1688 | kfree(card->mp_regs); | |
1689 | return -1; | |
1690 | } | |
1691 | ||
1692 | return ret; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * This function resets the MPA Tx and Rx buffers. | |
1697 | */ | |
1698 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) | |
1699 | { | |
1700 | struct sdio_mmc_card *card = adapter->card; | |
1701 | ||
1702 | MP_TX_AGGR_BUF_RESET(card); | |
1703 | MP_RX_AGGR_BUF_RESET(card); | |
1704 | } | |
1705 | ||
1706 | /* | |
1707 | * This function cleans up the allocated card buffers. | |
1708 | * | |
1709 | * The following are freed by this function - | |
1710 | * - MP registers | |
1711 | * - MPA Tx buffer | |
1712 | * - MPA Rx buffer | |
1713 | */ | |
1714 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) | |
1715 | { | |
1716 | struct sdio_mmc_card *card = adapter->card; | |
1717 | ||
1718 | kfree(card->mp_regs); | |
1719 | kfree(card->mpa_tx.buf); | |
1720 | kfree(card->mpa_rx.buf); | |
1721 | } | |
1722 | ||
1723 | /* | |
1724 | * This function updates the MP end port in card. | |
1725 | */ | |
1726 | static void | |
1727 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) | |
1728 | { | |
1729 | struct sdio_mmc_card *card = adapter->card; | |
1730 | int i; | |
1731 | ||
1732 | card->mp_end_port = port; | |
1733 | ||
1734 | card->mp_data_port_mask = DATA_PORT_MASK; | |
1735 | ||
1736 | for (i = 1; i <= MAX_PORT - card->mp_end_port; i++) | |
1737 | card->mp_data_port_mask &= ~(1 << (MAX_PORT - i)); | |
1738 | ||
1739 | card->curr_wr_port = 1; | |
1740 | ||
1741 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", | |
5dbd326c | 1742 | port, card->mp_data_port_mask); |
5e6e3a92 BZ |
1743 | } |
1744 | ||
d31ab357 AK |
1745 | static struct mmc_host *reset_host; |
1746 | static void sdio_card_reset_worker(struct work_struct *work) | |
1747 | { | |
1748 | /* The actual reset operation must be run outside of driver thread. | |
1749 | * This is because mmc_remove_host() will cause the device to be | |
1750 | * instantly destroyed, and the driver then needs to end its thread, | |
1751 | * leading to a deadlock. | |
1752 | * | |
1753 | * We run it in a totally independent workqueue. | |
1754 | */ | |
1755 | ||
1756 | pr_err("Resetting card...\n"); | |
1757 | mmc_remove_host(reset_host); | |
1758 | /* 20ms delay is based on experiment with sdhci controller */ | |
1759 | mdelay(20); | |
1760 | mmc_add_host(reset_host); | |
1761 | } | |
1762 | static DECLARE_WORK(card_reset_work, sdio_card_reset_worker); | |
1763 | ||
1764 | /* This function resets the card */ | |
1765 | static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) | |
1766 | { | |
1767 | struct sdio_mmc_card *card = adapter->card; | |
1768 | ||
1769 | if (work_pending(&card_reset_work)) | |
1770 | return; | |
1771 | ||
1772 | reset_host = card->func->card->host; | |
1773 | schedule_work(&card_reset_work); | |
1774 | } | |
1775 | ||
5e6e3a92 BZ |
1776 | static struct mwifiex_if_ops sdio_ops = { |
1777 | .init_if = mwifiex_init_sdio, | |
1778 | .cleanup_if = mwifiex_cleanup_sdio, | |
1779 | .check_fw_status = mwifiex_check_fw_status, | |
1780 | .prog_fw = mwifiex_prog_fw_w_helper, | |
1781 | .register_dev = mwifiex_register_dev, | |
1782 | .unregister_dev = mwifiex_unregister_dev, | |
1783 | .enable_int = mwifiex_sdio_enable_host_int, | |
1784 | .process_int_status = mwifiex_process_int_status, | |
1785 | .host_to_card = mwifiex_sdio_host_to_card, | |
1786 | .wakeup = mwifiex_pm_wakeup_card, | |
1787 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, | |
1788 | ||
1789 | /* SDIO specific */ | |
1790 | .update_mp_end_port = mwifiex_update_mp_end_port, | |
1791 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, | |
d930faee AK |
1792 | .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, |
1793 | .event_complete = mwifiex_sdio_event_complete, | |
d31ab357 | 1794 | .card_reset = mwifiex_sdio_card_reset, |
5e6e3a92 BZ |
1795 | }; |
1796 | ||
1797 | /* | |
1798 | * This function initializes the SDIO driver. | |
1799 | * | |
1800 | * This initiates the semaphore and registers the device with | |
1801 | * SDIO bus. | |
1802 | */ | |
1803 | static int | |
1804 | mwifiex_sdio_init_module(void) | |
1805 | { | |
5e6e3a92 BZ |
1806 | sema_init(&add_remove_card_sem, 1); |
1807 | ||
287546df AK |
1808 | /* Clear the flag in case user removes the card. */ |
1809 | user_rmmod = 0; | |
1810 | ||
636c4598 | 1811 | return sdio_register_driver(&mwifiex_sdio); |
5e6e3a92 BZ |
1812 | } |
1813 | ||
1814 | /* | |
1815 | * This function cleans up the SDIO driver. | |
1816 | * | |
1817 | * The following major steps are followed for cleanup - | |
1818 | * - Resume the device if its suspended | |
1819 | * - Disconnect the device if connected | |
1820 | * - Shutdown the firmware | |
1821 | * - Unregister the device from SDIO bus. | |
1822 | */ | |
1823 | static void | |
1824 | mwifiex_sdio_cleanup_module(void) | |
1825 | { | |
287546df AK |
1826 | if (!down_interruptible(&add_remove_card_sem)) |
1827 | up(&add_remove_card_sem); | |
5e6e3a92 | 1828 | |
287546df AK |
1829 | /* Set the flag as user is removing this module. */ |
1830 | user_rmmod = 1; | |
5e6e3a92 | 1831 | |
d31ab357 | 1832 | cancel_work_sync(&card_reset_work); |
5e6e3a92 BZ |
1833 | sdio_unregister_driver(&mwifiex_sdio); |
1834 | } | |
1835 | ||
1836 | module_init(mwifiex_sdio_init_module); | |
1837 | module_exit(mwifiex_sdio_cleanup_module); | |
1838 | ||
1839 | MODULE_AUTHOR("Marvell International Ltd."); | |
1840 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); | |
1841 | MODULE_VERSION(SDIO_VERSION); | |
1842 | MODULE_LICENSE("GPL v2"); | |
98e6b9df | 1843 | MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); |
e3bea1c8 BZ |
1844 | MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); |
1845 | MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); |