1 /*
2 * Marvell Wireless LAN device driver: SDIO specific handling
3 *
4 * Copyright (C) 2011-2014, 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
34 static void mwifiex_sdio_work(struct work_struct *work);
35
36 static struct mwifiex_if_ops sdio_ops;
37
38 static struct memory_type_mapping generic_mem_type_map[] = {
39 {"DUMP", NULL, 0, 0xDD},
40 };
41
42 static struct memory_type_mapping mem_type_mapping_tbl[] = {
43 {"ITCM", NULL, 0, 0xF0},
44 {"DTCM", NULL, 0, 0xF1},
45 {"SQRAM", NULL, 0, 0xF2},
46 {"APU", NULL, 0, 0xF3},
47 {"CIU", NULL, 0, 0xF4},
48 {"ICU", NULL, 0, 0xF5},
49 {"MAC", NULL, 0, 0xF6},
50 {"EXT7", NULL, 0, 0xF7},
51 {"EXT8", NULL, 0, 0xF8},
52 {"EXT9", NULL, 0, 0xF9},
53 {"EXT10", NULL, 0, 0xFA},
54 {"EXT11", NULL, 0, 0xFB},
55 {"EXT12", NULL, 0, 0xFC},
56 {"EXT13", NULL, 0, 0xFD},
57 {"EXTLAST", NULL, 0, 0xFE},
58 };
59
60 static const struct of_device_id mwifiex_sdio_of_match_table[] = {
61 { .compatible = "marvell,sd8897" },
62 { .compatible = "marvell,sd8997" },
63 { }
64 };
65
66 /* This function parse device tree node using mmc subnode devicetree API.
67 * The device node is saved in card->plt_of_node.
68 * if the device tree node exist and include interrupts attributes, this
69 * function will also request platform specific wakeup interrupt.
70 */
mwifiex_sdio_probe_of(struct device * dev)71 static int mwifiex_sdio_probe_of(struct device *dev)
72 {
73 if (!of_match_node(mwifiex_sdio_of_match_table, dev->of_node)) {
74 dev_err(dev, "required compatible string missing\n");
75 return -EINVAL;
76 }
77
78 return 0;
79 }
80
81 /*
82 * SDIO probe.
83 *
84 * This function probes an mwifiex device and registers it. It allocates
85 * the card structure, enables SDIO function number and initiates the
86 * device registration and initialization procedure by adding a logical
87 * interface.
88 */
89 static int
mwifiex_sdio_probe(struct sdio_func * func,const struct sdio_device_id * id)90 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
91 {
92 int ret;
93 struct sdio_mmc_card *card = NULL;
94
95 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
96 func->vendor, func->device, func->class, func->num);
97
98 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
99 if (!card)
100 return -ENOMEM;
101
102 init_completion(&card->fw_done);
103
104 card->func = func;
105
106 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
107
108 if (id->driver_data) {
109 struct mwifiex_sdio_device *data = (void *)id->driver_data;
110
111 card->firmware = data->firmware;
112 card->reg = data->reg;
113 card->max_ports = data->max_ports;
114 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
115 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
116 card->has_control_mask = data->has_control_mask;
117 card->tx_buf_size = data->tx_buf_size;
118 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
119 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
120 card->can_dump_fw = data->can_dump_fw;
121 card->fw_dump_enh = data->fw_dump_enh;
122 card->can_auto_tdls = data->can_auto_tdls;
123 card->can_ext_scan = data->can_ext_scan;
124 INIT_WORK(&card->work, mwifiex_sdio_work);
125 }
126
127 sdio_claim_host(func);
128 ret = sdio_enable_func(func);
129 sdio_release_host(func);
130
131 if (ret) {
132 dev_err(&func->dev, "failed to enable function\n");
133 return ret;
134 }
135
136 /* device tree node parsing and platform specific configuration*/
137 if (func->dev.of_node) {
138 ret = mwifiex_sdio_probe_of(&func->dev);
139 if (ret)
140 goto err_disable;
141 }
142
143 ret = mwifiex_add_card(card, &card->fw_done, &sdio_ops,
144 MWIFIEX_SDIO, &func->dev);
145 if (ret) {
146 dev_err(&func->dev, "add card failed\n");
147 goto err_disable;
148 }
149
150 return 0;
151
152 err_disable:
153 sdio_claim_host(func);
154 sdio_disable_func(func);
155 sdio_release_host(func);
156
157 return ret;
158 }
159
160 /*
161 * SDIO resume.
162 *
163 * Kernel needs to suspend all functions separately. Therefore all
164 * registered functions must have drivers with suspend and resume
165 * methods. Failing that the kernel simply removes the whole card.
166 *
167 * If already not resumed, this function turns on the traffic and
168 * sends a host sleep cancel request to the firmware.
169 */
mwifiex_sdio_resume(struct device * dev)170 static int mwifiex_sdio_resume(struct device *dev)
171 {
172 struct sdio_func *func = dev_to_sdio_func(dev);
173 struct sdio_mmc_card *card;
174 struct mwifiex_adapter *adapter;
175
176 card = sdio_get_drvdata(func);
177 if (!card || !card->adapter) {
178 dev_err(dev, "resume: invalid card or adapter\n");
179 return 0;
180 }
181
182 adapter = card->adapter;
183
184 if (!test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) {
185 mwifiex_dbg(adapter, WARN,
186 "device already resumed\n");
187 return 0;
188 }
189
190 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
191
192 /* Disable Host Sleep */
193 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
194 MWIFIEX_SYNC_CMD);
195
196 mwifiex_disable_wake(adapter);
197
198 return 0;
199 }
200
201 /* Write data into SDIO card register. Caller claims SDIO device. */
202 static int
mwifiex_write_reg_locked(struct sdio_func * func,u32 reg,u8 data)203 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
204 {
205 int ret = -1;
206
207 sdio_writeb(func, data, reg, &ret);
208 return ret;
209 }
210
211 /* This function writes data into SDIO card register.
212 */
213 static int
mwifiex_write_reg(struct mwifiex_adapter * adapter,u32 reg,u8 data)214 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
215 {
216 struct sdio_mmc_card *card = adapter->card;
217 int ret;
218
219 sdio_claim_host(card->func);
220 ret = mwifiex_write_reg_locked(card->func, reg, data);
221 sdio_release_host(card->func);
222
223 return ret;
224 }
225
226 /* This function reads data from SDIO card register.
227 */
228 static int
mwifiex_read_reg(struct mwifiex_adapter * adapter,u32 reg,u8 * data)229 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
230 {
231 struct sdio_mmc_card *card = adapter->card;
232 int ret = -1;
233 u8 val;
234
235 sdio_claim_host(card->func);
236 val = sdio_readb(card->func, reg, &ret);
237 sdio_release_host(card->func);
238
239 *data = val;
240
241 return ret;
242 }
243
244 /* This function writes multiple data into SDIO card memory.
245 *
246 * This does not work in suspended mode.
247 */
248 static int
mwifiex_write_data_sync(struct mwifiex_adapter * adapter,u8 * buffer,u32 pkt_len,u32 port)249 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
250 u8 *buffer, u32 pkt_len, u32 port)
251 {
252 struct sdio_mmc_card *card = adapter->card;
253 int ret;
254 u8 blk_mode =
255 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
256 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
257 u32 blk_cnt =
258 (blk_mode ==
259 BLOCK_MODE) ? (pkt_len /
260 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
261 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
262
263 if (test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) {
264 mwifiex_dbg(adapter, ERROR,
265 "%s: not allowed while suspended\n", __func__);
266 return -1;
267 }
268
269 sdio_claim_host(card->func);
270
271 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
272
273 sdio_release_host(card->func);
274
275 return ret;
276 }
277
278 /* This function reads multiple data from SDIO card memory.
279 */
mwifiex_read_data_sync(struct mwifiex_adapter * adapter,u8 * buffer,u32 len,u32 port,u8 claim)280 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
281 u32 len, u32 port, u8 claim)
282 {
283 struct sdio_mmc_card *card = adapter->card;
284 int ret;
285 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
286 : BLOCK_MODE;
287 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
288 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
289 : len;
290 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
291
292 if (claim)
293 sdio_claim_host(card->func);
294
295 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
296
297 if (claim)
298 sdio_release_host(card->func);
299
300 return ret;
301 }
302
303 /* This function reads the firmware status.
304 */
305 static int
mwifiex_sdio_read_fw_status(struct mwifiex_adapter * adapter,u16 * dat)306 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
307 {
308 struct sdio_mmc_card *card = adapter->card;
309 const struct mwifiex_sdio_card_reg *reg = card->reg;
310 u8 fws0, fws1;
311
312 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
313 return -1;
314
315 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
316 return -1;
317
318 *dat = (u16)((fws1 << 8) | fws0);
319 return 0;
320 }
321
322 /* This function checks the firmware status in card.
323 */
mwifiex_check_fw_status(struct mwifiex_adapter * adapter,u32 poll_num)324 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
325 u32 poll_num)
326 {
327 int ret = 0;
328 u16 firmware_stat;
329 u32 tries;
330
331 for (tries = 0; tries < poll_num; tries++) {
332 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
333 if (ret)
334 continue;
335 if (firmware_stat == FIRMWARE_READY_SDIO) {
336 ret = 0;
337 break;
338 }
339
340 msleep(100);
341 ret = -1;
342 }
343
344 return ret;
345 }
346
347 /* This function checks if WLAN is the winner.
348 */
mwifiex_check_winner_status(struct mwifiex_adapter * adapter)349 static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
350 {
351 int ret = 0;
352 u8 winner = 0;
353 struct sdio_mmc_card *card = adapter->card;
354
355 if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner))
356 return -1;
357
358 if (winner)
359 adapter->winner = 0;
360 else
361 adapter->winner = 1;
362
363 return ret;
364 }
365
366 /*
367 * SDIO remove.
368 *
369 * This function removes the interface and frees up the card structure.
370 */
371 static void
mwifiex_sdio_remove(struct sdio_func * func)372 mwifiex_sdio_remove(struct sdio_func *func)
373 {
374 struct sdio_mmc_card *card;
375 struct mwifiex_adapter *adapter;
376 struct mwifiex_private *priv;
377 int ret = 0;
378 u16 firmware_stat;
379
380 card = sdio_get_drvdata(func);
381 if (!card)
382 return;
383
384 wait_for_completion(&card->fw_done);
385
386 adapter = card->adapter;
387 if (!adapter || !adapter->priv_num)
388 return;
389
390 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
391
392 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
393 if (!ret && firmware_stat == FIRMWARE_READY_SDIO &&
394 !adapter->mfg_mode) {
395 mwifiex_deauthenticate_all(adapter);
396
397 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
398 mwifiex_disable_auto_ds(priv);
399 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
400 }
401
402 mwifiex_remove_card(adapter);
403 }
404
405 /*
406 * SDIO suspend.
407 *
408 * Kernel needs to suspend all functions separately. Therefore all
409 * registered functions must have drivers with suspend and resume
410 * methods. Failing that the kernel simply removes the whole card.
411 *
412 * If already not suspended, this function allocates and sends a host
413 * sleep activate request to the firmware and turns off the traffic.
414 */
mwifiex_sdio_suspend(struct device * dev)415 static int mwifiex_sdio_suspend(struct device *dev)
416 {
417 struct sdio_func *func = dev_to_sdio_func(dev);
418 struct sdio_mmc_card *card;
419 struct mwifiex_adapter *adapter;
420 mmc_pm_flag_t pm_flag = 0;
421 int ret = 0;
422
423 pm_flag = sdio_get_host_pm_caps(func);
424 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
425 sdio_func_id(func), pm_flag);
426 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
427 dev_err(dev, "%s: cannot remain alive while host is"
428 " suspended\n", sdio_func_id(func));
429 return -ENOSYS;
430 }
431
432 card = sdio_get_drvdata(func);
433 if (!card) {
434 dev_err(dev, "suspend: invalid card\n");
435 return 0;
436 }
437
438 /* Might still be loading firmware */
439 wait_for_completion(&card->fw_done);
440
441 adapter = card->adapter;
442 if (!adapter) {
443 dev_err(dev, "adapter is not valid\n");
444 return 0;
445 }
446
447 mwifiex_enable_wake(adapter);
448
449 /* Enable the Host Sleep */
450 if (!mwifiex_enable_hs(adapter)) {
451 mwifiex_dbg(adapter, ERROR,
452 "cmd: failed to suspend\n");
453 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags);
454 mwifiex_disable_wake(adapter);
455 return -EFAULT;
456 }
457
458 mwifiex_dbg(adapter, INFO,
459 "cmd: suspend with MMC_PM_KEEP_POWER\n");
460 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
461
462 /* Indicate device suspended */
463 set_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
464 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags);
465
466 return ret;
467 }
468
mwifiex_sdio_coredump(struct device * dev)469 static void mwifiex_sdio_coredump(struct device *dev)
470 {
471 struct sdio_func *func = dev_to_sdio_func(dev);
472 struct sdio_mmc_card *card;
473
474 card = sdio_get_drvdata(func);
475 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
476 &card->work_flags))
477 schedule_work(&card->work);
478 }
479
480 /* Device ID for SD8786 */
481 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
482 /* Device ID for SD8787 */
483 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
484 /* Device ID for SD8797 */
485 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
486 /* Device ID for SD8897 */
487 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
488 /* Device ID for SD8887 */
489 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135)
490 /* Device ID for SD8801 */
491 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139)
492 /* Device ID for SD8977 */
493 #define SDIO_DEVICE_ID_MARVELL_8977 (0x9145)
494 /* Device ID for SD8987 */
495 #define SDIO_DEVICE_ID_MARVELL_8987 (0x9149)
496 /* Device ID for SD8997 */
497 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141)
498
499
500 /* WLAN IDs */
501 static const struct sdio_device_id mwifiex_ids[] = {
502 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
503 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
504 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
505 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
506 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
507 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
508 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
509 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
510 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
511 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
512 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
513 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
514 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8977),
515 .driver_data = (unsigned long)&mwifiex_sdio_sd8977},
516 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8987),
517 .driver_data = (unsigned long)&mwifiex_sdio_sd8987},
518 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997),
519 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
520 {},
521 };
522
523 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
524
525 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
526 .suspend = mwifiex_sdio_suspend,
527 .resume = mwifiex_sdio_resume,
528 };
529
530 static struct sdio_driver mwifiex_sdio = {
531 .name = "mwifiex_sdio",
532 .id_table = mwifiex_ids,
533 .probe = mwifiex_sdio_probe,
534 .remove = mwifiex_sdio_remove,
535 .drv = {
536 .owner = THIS_MODULE,
537 .coredump = mwifiex_sdio_coredump,
538 .pm = &mwifiex_sdio_pm_ops,
539 }
540 };
541
542 /*
543 * This function wakes up the card.
544 *
545 * A host power up command is written to the card configuration
546 * register to wake up the card.
547 */
mwifiex_pm_wakeup_card(struct mwifiex_adapter * adapter)548 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
549 {
550 mwifiex_dbg(adapter, EVENT,
551 "event: wakeup device...\n");
552
553 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
554 }
555
556 /*
557 * This function is called after the card has woken up.
558 *
559 * The card configuration register is reset.
560 */
mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter * adapter)561 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
562 {
563 mwifiex_dbg(adapter, EVENT,
564 "cmd: wakeup device completed\n");
565
566 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
567 }
568
mwifiex_sdio_dnld_fw(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * fw)569 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter,
570 struct mwifiex_fw_image *fw)
571 {
572 struct sdio_mmc_card *card = adapter->card;
573 int ret;
574
575 sdio_claim_host(card->func);
576 ret = mwifiex_dnld_fw(adapter, fw);
577 sdio_release_host(card->func);
578
579 return ret;
580 }
581
582 /*
583 * This function is used to initialize IO ports for the
584 * chipsets supporting SDIO new mode eg SD8897.
585 */
mwifiex_init_sdio_new_mode(struct mwifiex_adapter * adapter)586 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
587 {
588 u8 reg;
589 struct sdio_mmc_card *card = adapter->card;
590
591 adapter->ioport = MEM_PORT;
592
593 /* enable sdio new mode */
594 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®))
595 return -1;
596 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
597 reg | CMD53_NEW_MODE))
598 return -1;
599
600 /* Configure cmd port and enable reading rx length from the register */
601 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®))
602 return -1;
603 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
604 reg | CMD_PORT_RD_LEN_EN))
605 return -1;
606
607 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
608 * completed
609 */
610 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®))
611 return -1;
612 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
613 reg | CMD_PORT_AUTO_EN))
614 return -1;
615
616 return 0;
617 }
618
619 /* This function initializes the IO ports.
620 *
621 * The following operations are performed -
622 * - Read the IO ports (0, 1 and 2)
623 * - Set host interrupt Reset-To-Read to clear
624 * - Set auto re-enable interrupt
625 */
mwifiex_init_sdio_ioport(struct mwifiex_adapter * adapter)626 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
627 {
628 u8 reg;
629 struct sdio_mmc_card *card = adapter->card;
630
631 adapter->ioport = 0;
632
633 if (card->supports_sdio_new_mode) {
634 if (mwifiex_init_sdio_new_mode(adapter))
635 return -1;
636 goto cont;
637 }
638
639 /* Read the IO port */
640 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®))
641 adapter->ioport |= (reg & 0xff);
642 else
643 return -1;
644
645 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®))
646 adapter->ioport |= ((reg & 0xff) << 8);
647 else
648 return -1;
649
650 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®))
651 adapter->ioport |= ((reg & 0xff) << 16);
652 else
653 return -1;
654 cont:
655 mwifiex_dbg(adapter, INFO,
656 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
657
658 /* Set Host interrupt reset to read to clear */
659 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®))
660 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
661 reg | card->reg->sdio_int_mask);
662 else
663 return -1;
664
665 /* Dnld/Upld ready set to auto reset */
666 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
667 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
668 reg | AUTO_RE_ENABLE_INT);
669 else
670 return -1;
671
672 return 0;
673 }
674
675 /*
676 * This function sends data to the card.
677 */
mwifiex_write_data_to_card(struct mwifiex_adapter * adapter,u8 * payload,u32 pkt_len,u32 port)678 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
679 u8 *payload, u32 pkt_len, u32 port)
680 {
681 u32 i = 0;
682 int ret;
683
684 do {
685 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
686 if (ret) {
687 i++;
688 mwifiex_dbg(adapter, ERROR,
689 "host_to_card, write iomem\t"
690 "(%d) failed: %d\n", i, ret);
691 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
692 mwifiex_dbg(adapter, ERROR,
693 "write CFG reg failed\n");
694
695 ret = -1;
696 if (i > MAX_WRITE_IOMEM_RETRY)
697 return ret;
698 }
699 } while (ret == -1);
700
701 return ret;
702 }
703
704 /*
705 * This function gets the read port.
706 *
707 * If control port bit is set in MP read bitmap, the control port
708 * is returned, otherwise the current read port is returned and
709 * the value is increased (provided it does not reach the maximum
710 * limit, in which case it is reset to 1)
711 */
mwifiex_get_rd_port(struct mwifiex_adapter * adapter,u8 * port)712 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
713 {
714 struct sdio_mmc_card *card = adapter->card;
715 const struct mwifiex_sdio_card_reg *reg = card->reg;
716 u32 rd_bitmap = card->mp_rd_bitmap;
717
718 mwifiex_dbg(adapter, DATA,
719 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
720
721 if (card->supports_sdio_new_mode) {
722 if (!(rd_bitmap & reg->data_port_mask))
723 return -1;
724 } else {
725 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
726 return -1;
727 }
728
729 if ((card->has_control_mask) &&
730 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
731 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
732 *port = CTRL_PORT;
733 mwifiex_dbg(adapter, DATA,
734 "data: port=%d mp_rd_bitmap=0x%08x\n",
735 *port, card->mp_rd_bitmap);
736 return 0;
737 }
738
739 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
740 return -1;
741
742 /* We are now handling the SDIO data ports */
743 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
744 *port = card->curr_rd_port;
745
746 if (++card->curr_rd_port == card->max_ports)
747 card->curr_rd_port = reg->start_rd_port;
748
749 mwifiex_dbg(adapter, DATA,
750 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
751 *port, rd_bitmap, card->mp_rd_bitmap);
752
753 return 0;
754 }
755
756 /*
757 * This function gets the write port for data.
758 *
759 * The current write port is returned if available and the value is
760 * increased (provided it does not reach the maximum limit, in which
761 * case it is reset to 1)
762 */
mwifiex_get_wr_port_data(struct mwifiex_adapter * adapter,u32 * port)763 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
764 {
765 struct sdio_mmc_card *card = adapter->card;
766 const struct mwifiex_sdio_card_reg *reg = card->reg;
767 u32 wr_bitmap = card->mp_wr_bitmap;
768
769 mwifiex_dbg(adapter, DATA,
770 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
771
772 if (!(wr_bitmap & card->mp_data_port_mask)) {
773 adapter->data_sent = true;
774 return -EBUSY;
775 }
776
777 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
778 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
779 *port = card->curr_wr_port;
780 if (++card->curr_wr_port == card->mp_end_port)
781 card->curr_wr_port = reg->start_wr_port;
782 } else {
783 adapter->data_sent = true;
784 return -EBUSY;
785 }
786
787 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
788 mwifiex_dbg(adapter, ERROR,
789 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
790 *port, card->curr_wr_port, wr_bitmap,
791 card->mp_wr_bitmap);
792 return -1;
793 }
794
795 mwifiex_dbg(adapter, DATA,
796 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
797 *port, wr_bitmap, card->mp_wr_bitmap);
798
799 return 0;
800 }
801
802 /*
803 * This function polls the card status.
804 */
805 static int
mwifiex_sdio_poll_card_status(struct mwifiex_adapter * adapter,u8 bits)806 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
807 {
808 struct sdio_mmc_card *card = adapter->card;
809 u32 tries;
810 u8 cs;
811
812 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
813 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
814 break;
815 else if ((cs & bits) == bits)
816 return 0;
817
818 usleep_range(10, 20);
819 }
820
821 mwifiex_dbg(adapter, ERROR,
822 "poll card status failed, tries = %d\n", tries);
823
824 return -1;
825 }
826
827 /*
828 * This function disables the host interrupt.
829 *
830 * The host interrupt mask is read, the disable bit is reset and
831 * written back to the card host interrupt mask register.
832 */
mwifiex_sdio_disable_host_int(struct mwifiex_adapter * adapter)833 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
834 {
835 struct sdio_mmc_card *card = adapter->card;
836 struct sdio_func *func = card->func;
837
838 sdio_claim_host(func);
839 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
840 sdio_release_irq(func);
841 sdio_release_host(func);
842 }
843
844 /*
845 * This function reads the interrupt status from card.
846 */
mwifiex_interrupt_status(struct mwifiex_adapter * adapter)847 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
848 {
849 struct sdio_mmc_card *card = adapter->card;
850 u8 sdio_ireg;
851 unsigned long flags;
852
853 if (mwifiex_read_data_sync(adapter, card->mp_regs,
854 card->reg->max_mp_regs,
855 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
856 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
857 return;
858 }
859
860 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
861 if (sdio_ireg) {
862 /*
863 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
864 * For SDIO new mode CMD port interrupts
865 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
866 * UP_LD_CMD_PORT_HOST_INT_STATUS
867 * Clear the interrupt status register
868 */
869 mwifiex_dbg(adapter, INTR,
870 "int: sdio_ireg = %#x\n", sdio_ireg);
871 spin_lock_irqsave(&adapter->int_lock, flags);
872 adapter->int_status |= sdio_ireg;
873 spin_unlock_irqrestore(&adapter->int_lock, flags);
874 }
875 }
876
877 /*
878 * SDIO interrupt handler.
879 *
880 * This function reads the interrupt status from firmware and handles
881 * the interrupt in current thread (ksdioirqd) right away.
882 */
883 static void
mwifiex_sdio_interrupt(struct sdio_func * func)884 mwifiex_sdio_interrupt(struct sdio_func *func)
885 {
886 struct mwifiex_adapter *adapter;
887 struct sdio_mmc_card *card;
888
889 card = sdio_get_drvdata(func);
890 if (!card || !card->adapter) {
891 pr_err("int: func=%p card=%p adapter=%p\n",
892 func, card, card ? card->adapter : NULL);
893 return;
894 }
895 adapter = card->adapter;
896
897 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
898 adapter->ps_state = PS_STATE_AWAKE;
899
900 mwifiex_interrupt_status(adapter);
901 mwifiex_main_process(adapter);
902 }
903
904 /*
905 * This function enables the host interrupt.
906 *
907 * The host interrupt enable mask is written to the card
908 * host interrupt mask register.
909 */
mwifiex_sdio_enable_host_int(struct mwifiex_adapter * adapter)910 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
911 {
912 struct sdio_mmc_card *card = adapter->card;
913 struct sdio_func *func = card->func;
914 int ret;
915
916 sdio_claim_host(func);
917
918 /* Request the SDIO IRQ */
919 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
920 if (ret) {
921 mwifiex_dbg(adapter, ERROR,
922 "claim irq failed: ret=%d\n", ret);
923 goto out;
924 }
925
926 /* Simply write the mask to the register */
927 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
928 card->reg->host_int_enable);
929 if (ret) {
930 mwifiex_dbg(adapter, ERROR,
931 "enable host interrupt failed\n");
932 sdio_release_irq(func);
933 }
934
935 out:
936 sdio_release_host(func);
937 return ret;
938 }
939
940 /*
941 * This function sends a data buffer to the card.
942 */
mwifiex_sdio_card_to_host(struct mwifiex_adapter * adapter,u32 * type,u8 * buffer,u32 npayload,u32 ioport)943 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
944 u32 *type, u8 *buffer,
945 u32 npayload, u32 ioport)
946 {
947 int ret;
948 u32 nb;
949
950 if (!buffer) {
951 mwifiex_dbg(adapter, ERROR,
952 "%s: buffer is NULL\n", __func__);
953 return -1;
954 }
955
956 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
957
958 if (ret) {
959 mwifiex_dbg(adapter, ERROR,
960 "%s: read iomem failed: %d\n", __func__,
961 ret);
962 return -1;
963 }
964
965 nb = get_unaligned_le16((buffer));
966 if (nb > npayload) {
967 mwifiex_dbg(adapter, ERROR,
968 "%s: invalid packet, nb=%d npayload=%d\n",
969 __func__, nb, npayload);
970 return -1;
971 }
972
973 *type = get_unaligned_le16((buffer + 2));
974
975 return ret;
976 }
977
978 /*
979 * This function downloads the firmware to the card.
980 *
981 * Firmware is downloaded to the card in blocks. Every block download
982 * is tested for CRC errors, and retried a number of times before
983 * returning failure.
984 */
mwifiex_prog_fw_w_helper(struct mwifiex_adapter * adapter,struct mwifiex_fw_image * fw)985 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
986 struct mwifiex_fw_image *fw)
987 {
988 struct sdio_mmc_card *card = adapter->card;
989 const struct mwifiex_sdio_card_reg *reg = card->reg;
990 int ret;
991 u8 *firmware = fw->fw_buf;
992 u32 firmware_len = fw->fw_len;
993 u32 offset = 0;
994 u8 base0, base1;
995 u8 *fwbuf;
996 u16 len = 0;
997 u32 txlen, tx_blocks = 0, tries;
998 u32 i = 0;
999
1000 if (!firmware_len) {
1001 mwifiex_dbg(adapter, ERROR,
1002 "firmware image not found! Terminating download\n");
1003 return -1;
1004 }
1005
1006 mwifiex_dbg(adapter, INFO,
1007 "info: downloading FW image (%d bytes)\n",
1008 firmware_len);
1009
1010 /* Assume that the allocated buffer is 8-byte aligned */
1011 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
1012 if (!fwbuf)
1013 return -ENOMEM;
1014
1015 sdio_claim_host(card->func);
1016
1017 /* Perform firmware data transfer */
1018 do {
1019 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
1020 bits */
1021 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
1022 DN_LD_CARD_RDY);
1023 if (ret) {
1024 mwifiex_dbg(adapter, ERROR,
1025 "FW download with helper:\t"
1026 "poll status timeout @ %d\n", offset);
1027 goto done;
1028 }
1029
1030 /* More data? */
1031 if (offset >= firmware_len)
1032 break;
1033
1034 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1035 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
1036 &base0);
1037 if (ret) {
1038 mwifiex_dbg(adapter, ERROR,
1039 "dev BASE0 register read failed:\t"
1040 "base0=%#04X(%d). Terminating dnld\n",
1041 base0, base0);
1042 goto done;
1043 }
1044 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
1045 &base1);
1046 if (ret) {
1047 mwifiex_dbg(adapter, ERROR,
1048 "dev BASE1 register read failed:\t"
1049 "base1=%#04X(%d). Terminating dnld\n",
1050 base1, base1);
1051 goto done;
1052 }
1053 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
1054
1055 if (len)
1056 break;
1057
1058 usleep_range(10, 20);
1059 }
1060
1061 if (!len) {
1062 break;
1063 } else if (len > MWIFIEX_UPLD_SIZE) {
1064 mwifiex_dbg(adapter, ERROR,
1065 "FW dnld failed @ %d, invalid length %d\n",
1066 offset, len);
1067 ret = -1;
1068 goto done;
1069 }
1070
1071 txlen = len;
1072
1073 if (len & BIT(0)) {
1074 i++;
1075 if (i > MAX_WRITE_IOMEM_RETRY) {
1076 mwifiex_dbg(adapter, ERROR,
1077 "FW dnld failed @ %d, over max retry\n",
1078 offset);
1079 ret = -1;
1080 goto done;
1081 }
1082 mwifiex_dbg(adapter, ERROR,
1083 "CRC indicated by the helper:\t"
1084 "len = 0x%04X, txlen = %d\n", len, txlen);
1085 len &= ~BIT(0);
1086 /* Setting this to 0 to resend from same offset */
1087 txlen = 0;
1088 } else {
1089 i = 0;
1090
1091 /* Set blocksize to transfer - checking for last
1092 block */
1093 if (firmware_len - offset < txlen)
1094 txlen = firmware_len - offset;
1095
1096 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1097 / MWIFIEX_SDIO_BLOCK_SIZE;
1098
1099 /* Copy payload to buffer */
1100 memmove(fwbuf, &firmware[offset], txlen);
1101 }
1102
1103 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1104 MWIFIEX_SDIO_BLOCK_SIZE,
1105 adapter->ioport);
1106 if (ret) {
1107 mwifiex_dbg(adapter, ERROR,
1108 "FW download, write iomem (%d) failed @ %d\n",
1109 i, offset);
1110 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1111 mwifiex_dbg(adapter, ERROR,
1112 "write CFG reg failed\n");
1113
1114 ret = -1;
1115 goto done;
1116 }
1117
1118 offset += txlen;
1119 } while (true);
1120
1121 mwifiex_dbg(adapter, MSG,
1122 "info: FW download over, size %d bytes\n", offset);
1123
1124 ret = 0;
1125 done:
1126 sdio_release_host(card->func);
1127 kfree(fwbuf);
1128 return ret;
1129 }
1130
1131 /*
1132 * This function decode sdio aggreation pkt.
1133 *
1134 * Based on the the data block size and pkt_len,
1135 * skb data will be decoded to few packets.
1136 */
mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter * adapter,struct sk_buff * skb)1137 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1138 struct sk_buff *skb)
1139 {
1140 u32 total_pkt_len, pkt_len;
1141 struct sk_buff *skb_deaggr;
1142 u16 blk_size;
1143 u8 blk_num;
1144 u8 *data;
1145
1146 data = skb->data;
1147 total_pkt_len = skb->len;
1148
1149 while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) {
1150 if (total_pkt_len < adapter->sdio_rx_block_size)
1151 break;
1152 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1153 blk_size = adapter->sdio_rx_block_size * blk_num;
1154 if (blk_size > total_pkt_len) {
1155 mwifiex_dbg(adapter, ERROR,
1156 "%s: error in blk_size,\t"
1157 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1158 __func__, blk_num, blk_size, total_pkt_len);
1159 break;
1160 }
1161 pkt_len = get_unaligned_le16((data +
1162 SDIO_HEADER_OFFSET));
1163 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1164 mwifiex_dbg(adapter, ERROR,
1165 "%s: error in pkt_len,\t"
1166 "pkt_len=%d, blk_size=%d\n",
1167 __func__, pkt_len, blk_size);
1168 break;
1169 }
1170
1171 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
1172 if (!skb_deaggr)
1173 break;
1174 skb_put(skb_deaggr, pkt_len);
1175 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1176 skb_pull(skb_deaggr, adapter->intf_hdr_len);
1177
1178 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1179 data += blk_size;
1180 total_pkt_len -= blk_size;
1181 }
1182 }
1183
1184 /*
1185 * This function decodes a received packet.
1186 *
1187 * Based on the type, the packet is treated as either a data, or
1188 * a command response, or an event, and the correct handler
1189 * function is invoked.
1190 */
mwifiex_decode_rx_packet(struct mwifiex_adapter * adapter,struct sk_buff * skb,u32 upld_typ)1191 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1192 struct sk_buff *skb, u32 upld_typ)
1193 {
1194 u8 *cmd_buf;
1195 u16 pkt_len;
1196 struct mwifiex_rxinfo *rx_info;
1197
1198 pkt_len = get_unaligned_le16(skb->data);
1199
1200 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1201 skb_trim(skb, pkt_len);
1202 skb_pull(skb, adapter->intf_hdr_len);
1203 }
1204
1205 switch (upld_typ) {
1206 case MWIFIEX_TYPE_AGGR_DATA:
1207 mwifiex_dbg(adapter, INFO,
1208 "info: --- Rx: Aggr Data packet ---\n");
1209 rx_info = MWIFIEX_SKB_RXCB(skb);
1210 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1211 if (adapter->rx_work_enabled) {
1212 skb_queue_tail(&adapter->rx_data_q, skb);
1213 atomic_inc(&adapter->rx_pending);
1214 adapter->data_received = true;
1215 } else {
1216 mwifiex_deaggr_sdio_pkt(adapter, skb);
1217 dev_kfree_skb_any(skb);
1218 }
1219 break;
1220
1221 case MWIFIEX_TYPE_DATA:
1222 mwifiex_dbg(adapter, DATA,
1223 "info: --- Rx: Data packet ---\n");
1224 if (adapter->rx_work_enabled) {
1225 skb_queue_tail(&adapter->rx_data_q, skb);
1226 adapter->data_received = true;
1227 atomic_inc(&adapter->rx_pending);
1228 } else {
1229 mwifiex_handle_rx_packet(adapter, skb);
1230 }
1231 break;
1232
1233 case MWIFIEX_TYPE_CMD:
1234 mwifiex_dbg(adapter, CMD,
1235 "info: --- Rx: Cmd Response ---\n");
1236 /* take care of curr_cmd = NULL case */
1237 if (!adapter->curr_cmd) {
1238 cmd_buf = adapter->upld_buf;
1239
1240 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1241 mwifiex_process_sleep_confirm_resp(adapter,
1242 skb->data,
1243 skb->len);
1244
1245 memcpy(cmd_buf, skb->data,
1246 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1247 skb->len));
1248
1249 dev_kfree_skb_any(skb);
1250 } else {
1251 adapter->cmd_resp_received = true;
1252 adapter->curr_cmd->resp_skb = skb;
1253 }
1254 break;
1255
1256 case MWIFIEX_TYPE_EVENT:
1257 mwifiex_dbg(adapter, EVENT,
1258 "info: --- Rx: Event ---\n");
1259 adapter->event_cause = get_unaligned_le32(skb->data);
1260
1261 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1262 memcpy(adapter->event_body,
1263 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1264 skb->len);
1265
1266 /* event cause has been saved to adapter->event_cause */
1267 adapter->event_received = true;
1268 adapter->event_skb = skb;
1269
1270 break;
1271
1272 default:
1273 mwifiex_dbg(adapter, ERROR,
1274 "unknown upload type %#x\n", upld_typ);
1275 dev_kfree_skb_any(skb);
1276 break;
1277 }
1278
1279 return 0;
1280 }
1281
1282 /*
1283 * This function transfers received packets from card to driver, performing
1284 * aggregation if required.
1285 *
1286 * For data received on control port, or if aggregation is disabled, the
1287 * received buffers are uploaded as separate packets. However, if aggregation
1288 * is enabled and required, the buffers are copied onto an aggregation buffer,
1289 * provided there is space left, processed and finally uploaded.
1290 */
mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter * adapter,u16 rx_len,u8 port)1291 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1292 u16 rx_len, u8 port)
1293 {
1294 struct sdio_mmc_card *card = adapter->card;
1295 s32 f_do_rx_aggr = 0;
1296 s32 f_do_rx_cur = 0;
1297 s32 f_aggr_cur = 0;
1298 s32 f_post_aggr_cur = 0;
1299 struct sk_buff *skb_deaggr;
1300 struct sk_buff *skb = NULL;
1301 u32 pkt_len, pkt_type, mport, pind;
1302 u8 *curr_ptr;
1303
1304 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1305 /* Read the command Resp without aggr */
1306 mwifiex_dbg(adapter, CMD,
1307 "info: %s: no aggregation for cmd\t"
1308 "response\n", __func__);
1309
1310 f_do_rx_cur = 1;
1311 goto rx_curr_single;
1312 }
1313
1314 if (!card->mpa_rx.enabled) {
1315 mwifiex_dbg(adapter, WARN,
1316 "info: %s: rx aggregation disabled\n",
1317 __func__);
1318
1319 f_do_rx_cur = 1;
1320 goto rx_curr_single;
1321 }
1322
1323 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1324 card->reg->data_port_mask)) ||
1325 (card->has_control_mask && (card->mp_rd_bitmap &
1326 (~((u32) CTRL_PORT_MASK))))) {
1327 /* Some more data RX pending */
1328 mwifiex_dbg(adapter, INFO,
1329 "info: %s: not last packet\n", __func__);
1330
1331 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1332 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1333 f_aggr_cur = 1;
1334 } else {
1335 /* No room in Aggr buf, do rx aggr now */
1336 f_do_rx_aggr = 1;
1337 f_post_aggr_cur = 1;
1338 }
1339 } else {
1340 /* Rx aggr not in progress */
1341 f_aggr_cur = 1;
1342 }
1343
1344 } else {
1345 /* No more data RX pending */
1346 mwifiex_dbg(adapter, INFO,
1347 "info: %s: last packet\n", __func__);
1348
1349 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1350 f_do_rx_aggr = 1;
1351 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1352 f_aggr_cur = 1;
1353 else
1354 /* No room in Aggr buf, do rx aggr now */
1355 f_do_rx_cur = 1;
1356 } else {
1357 f_do_rx_cur = 1;
1358 }
1359 }
1360
1361 if (f_aggr_cur) {
1362 mwifiex_dbg(adapter, INFO,
1363 "info: current packet aggregation\n");
1364 /* Curr pkt can be aggregated */
1365 mp_rx_aggr_setup(card, rx_len, port);
1366
1367 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1368 mp_rx_aggr_port_limit_reached(card)) {
1369 mwifiex_dbg(adapter, INFO,
1370 "info: %s: aggregated packet\t"
1371 "limit reached\n", __func__);
1372 /* No more pkts allowed in Aggr buf, rx it */
1373 f_do_rx_aggr = 1;
1374 }
1375 }
1376
1377 if (f_do_rx_aggr) {
1378 /* do aggr RX now */
1379 mwifiex_dbg(adapter, DATA,
1380 "info: do_rx_aggr: num of packets: %d\n",
1381 card->mpa_rx.pkt_cnt);
1382
1383 if (card->supports_sdio_new_mode) {
1384 int i;
1385 u32 port_count;
1386
1387 for (i = 0, port_count = 0; i < card->max_ports; i++)
1388 if (card->mpa_rx.ports & BIT(i))
1389 port_count++;
1390
1391 /* Reading data from "start_port + 0" to "start_port +
1392 * port_count -1", so decrease the count by 1
1393 */
1394 port_count--;
1395 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1396 (port_count << 8)) + card->mpa_rx.start_port;
1397 } else {
1398 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1399 (card->mpa_rx.ports << 4)) +
1400 card->mpa_rx.start_port;
1401 }
1402
1403 if (card->mpa_rx.pkt_cnt == 1)
1404 mport = adapter->ioport + card->mpa_rx.start_port;
1405
1406 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1407 card->mpa_rx.buf_len, mport, 1))
1408 goto error;
1409
1410 curr_ptr = card->mpa_rx.buf;
1411
1412 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1413 u32 *len_arr = card->mpa_rx.len_arr;
1414
1415 /* get curr PKT len & type */
1416 pkt_len = get_unaligned_le16(&curr_ptr[0]);
1417 pkt_type = get_unaligned_le16(&curr_ptr[2]);
1418
1419 /* copy pkt to deaggr buf */
1420 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1421 GFP_KERNEL);
1422 if (!skb_deaggr) {
1423 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1424 "drop pkt len=%d type=%d\n",
1425 pkt_len, pkt_type);
1426 curr_ptr += len_arr[pind];
1427 continue;
1428 }
1429
1430 skb_put(skb_deaggr, len_arr[pind]);
1431
1432 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1433 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1434 adapter->sdio_rx_aggr_enable)) &&
1435 (pkt_len <= len_arr[pind])) {
1436
1437 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1438
1439 skb_trim(skb_deaggr, pkt_len);
1440
1441 /* Process de-aggr packet */
1442 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1443 pkt_type);
1444 } else {
1445 mwifiex_dbg(adapter, ERROR,
1446 "drop wrong aggr pkt:\t"
1447 "sdio_single_port_rx_aggr=%d\t"
1448 "type=%d len=%d max_len=%d\n",
1449 adapter->sdio_rx_aggr_enable,
1450 pkt_type, pkt_len, len_arr[pind]);
1451 dev_kfree_skb_any(skb_deaggr);
1452 }
1453 curr_ptr += len_arr[pind];
1454 }
1455 MP_RX_AGGR_BUF_RESET(card);
1456 }
1457
1458 rx_curr_single:
1459 if (f_do_rx_cur) {
1460 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1461 port, rx_len);
1462
1463 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1464 if (!skb) {
1465 mwifiex_dbg(adapter, ERROR,
1466 "single skb allocated fail,\t"
1467 "drop pkt port=%d len=%d\n", port, rx_len);
1468 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1469 card->mpa_rx.buf, rx_len,
1470 adapter->ioport + port))
1471 goto error;
1472 return 0;
1473 }
1474
1475 skb_put(skb, rx_len);
1476
1477 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1478 skb->data, skb->len,
1479 adapter->ioport + port))
1480 goto error;
1481 if (!adapter->sdio_rx_aggr_enable &&
1482 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1483 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1484 "current SDIO RX Aggr not enabled\n",
1485 pkt_type);
1486 dev_kfree_skb_any(skb);
1487 return 0;
1488 }
1489
1490 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1491 }
1492 if (f_post_aggr_cur) {
1493 mwifiex_dbg(adapter, INFO,
1494 "info: current packet aggregation\n");
1495 /* Curr pkt can be aggregated */
1496 mp_rx_aggr_setup(card, rx_len, port);
1497 }
1498
1499 return 0;
1500 error:
1501 if (MP_RX_AGGR_IN_PROGRESS(card))
1502 MP_RX_AGGR_BUF_RESET(card);
1503
1504 if (f_do_rx_cur && skb)
1505 /* Single transfer pending. Free curr buff also */
1506 dev_kfree_skb_any(skb);
1507
1508 return -1;
1509 }
1510
1511 /*
1512 * This function checks the current interrupt status.
1513 *
1514 * The following interrupts are checked and handled by this function -
1515 * - Data sent
1516 * - Command sent
1517 * - Packets received
1518 *
1519 * Since the firmware does not generate download ready interrupt if the
1520 * port updated is command port only, command sent interrupt checking
1521 * should be done manually, and for every SDIO interrupt.
1522 *
1523 * In case of Rx packets received, the packets are uploaded from card to
1524 * host and processed accordingly.
1525 */
mwifiex_process_int_status(struct mwifiex_adapter * adapter)1526 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1527 {
1528 struct sdio_mmc_card *card = adapter->card;
1529 const struct mwifiex_sdio_card_reg *reg = card->reg;
1530 int ret = 0;
1531 u8 sdio_ireg;
1532 struct sk_buff *skb;
1533 u8 port = CTRL_PORT;
1534 u32 len_reg_l, len_reg_u;
1535 u32 rx_blocks;
1536 u16 rx_len;
1537 unsigned long flags;
1538 u32 bitmap;
1539 u8 cr;
1540
1541 spin_lock_irqsave(&adapter->int_lock, flags);
1542 sdio_ireg = adapter->int_status;
1543 adapter->int_status = 0;
1544 spin_unlock_irqrestore(&adapter->int_lock, flags);
1545
1546 if (!sdio_ireg)
1547 return ret;
1548
1549 /* Following interrupt is only for SDIO new mode */
1550 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1551 adapter->cmd_sent = false;
1552
1553 /* Following interrupt is only for SDIO new mode */
1554 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1555 u32 pkt_type;
1556
1557 /* read the len of control packet */
1558 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1559 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1560 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1561 if (rx_len <= adapter->intf_hdr_len ||
1562 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1563 MWIFIEX_RX_DATA_BUF_SIZE)
1564 return -1;
1565 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1566 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1567
1568 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1569 if (!skb)
1570 return -1;
1571
1572 skb_put(skb, rx_len);
1573
1574 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1575 skb->len, adapter->ioport |
1576 CMD_PORT_SLCT)) {
1577 mwifiex_dbg(adapter, ERROR,
1578 "%s: failed to card_to_host", __func__);
1579 dev_kfree_skb_any(skb);
1580 goto term_cmd;
1581 }
1582
1583 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1584 (pkt_type != MWIFIEX_TYPE_EVENT))
1585 mwifiex_dbg(adapter, ERROR,
1586 "%s:Received wrong packet on cmd port",
1587 __func__);
1588
1589 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1590 }
1591
1592 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1593 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1594 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1595 if (card->supports_sdio_new_mode) {
1596 bitmap |=
1597 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1598 bitmap |=
1599 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1600 }
1601 card->mp_wr_bitmap = bitmap;
1602
1603 mwifiex_dbg(adapter, INTR,
1604 "int: DNLD: wr_bitmap=0x%x\n",
1605 card->mp_wr_bitmap);
1606 if (adapter->data_sent &&
1607 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1608 mwifiex_dbg(adapter, INTR,
1609 "info: <--- Tx DONE Interrupt --->\n");
1610 adapter->data_sent = false;
1611 }
1612 }
1613
1614 /* As firmware will not generate download ready interrupt if the port
1615 updated is command port only, cmd_sent should be done for any SDIO
1616 interrupt. */
1617 if (card->has_control_mask && adapter->cmd_sent) {
1618 /* Check if firmware has attach buffer at command port and
1619 update just that in wr_bit_map. */
1620 card->mp_wr_bitmap |=
1621 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1622 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1623 adapter->cmd_sent = false;
1624 }
1625
1626 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1627 adapter->cmd_sent, adapter->data_sent);
1628 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1629 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1630 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1631 if (card->supports_sdio_new_mode) {
1632 bitmap |=
1633 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1634 bitmap |=
1635 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1636 }
1637 card->mp_rd_bitmap = bitmap;
1638 mwifiex_dbg(adapter, INTR,
1639 "int: UPLD: rd_bitmap=0x%x\n",
1640 card->mp_rd_bitmap);
1641
1642 while (true) {
1643 ret = mwifiex_get_rd_port(adapter, &port);
1644 if (ret) {
1645 mwifiex_dbg(adapter, INFO,
1646 "info: no more rd_port available\n");
1647 break;
1648 }
1649 len_reg_l = reg->rd_len_p0_l + (port << 1);
1650 len_reg_u = reg->rd_len_p0_u + (port << 1);
1651 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1652 rx_len |= (u16) card->mp_regs[len_reg_l];
1653 mwifiex_dbg(adapter, INFO,
1654 "info: RX: port=%d rx_len=%u\n",
1655 port, rx_len);
1656 rx_blocks =
1657 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1658 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1659 if (rx_len <= adapter->intf_hdr_len ||
1660 (card->mpa_rx.enabled &&
1661 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1662 card->mpa_rx.buf_size))) {
1663 mwifiex_dbg(adapter, ERROR,
1664 "invalid rx_len=%d\n",
1665 rx_len);
1666 return -1;
1667 }
1668
1669 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1670 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1671 rx_len);
1672
1673 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1674 port)) {
1675 mwifiex_dbg(adapter, ERROR,
1676 "card_to_host_mpa failed: int status=%#x\n",
1677 sdio_ireg);
1678 goto term_cmd;
1679 }
1680 }
1681 }
1682
1683 return 0;
1684
1685 term_cmd:
1686 /* terminate cmd */
1687 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1688 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
1689 else
1690 mwifiex_dbg(adapter, INFO,
1691 "info: CFG reg val = %d\n", cr);
1692
1693 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1694 mwifiex_dbg(adapter, ERROR,
1695 "write CFG reg failed\n");
1696 else
1697 mwifiex_dbg(adapter, INFO, "info: write success\n");
1698
1699 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1700 mwifiex_dbg(adapter, ERROR,
1701 "read CFG reg failed\n");
1702 else
1703 mwifiex_dbg(adapter, INFO,
1704 "info: CFG reg val =%x\n", cr);
1705
1706 return -1;
1707 }
1708
1709 /*
1710 * This function aggregates transmission buffers in driver and downloads
1711 * the aggregated packet to card.
1712 *
1713 * The individual packets are aggregated by copying into an aggregation
1714 * buffer and then downloaded to the card. Previous unsent packets in the
1715 * aggregation buffer are pre-copied first before new packets are added.
1716 * Aggregation is done till there is space left in the aggregation buffer,
1717 * or till new packets are available.
1718 *
1719 * The function will only download the packet to the card when aggregation
1720 * stops, otherwise it will just aggregate the packet in aggregation buffer
1721 * and return.
1722 */
mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter * adapter,u8 * payload,u32 pkt_len,u32 port,u32 next_pkt_len)1723 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1724 u8 *payload, u32 pkt_len, u32 port,
1725 u32 next_pkt_len)
1726 {
1727 struct sdio_mmc_card *card = adapter->card;
1728 int ret = 0;
1729 s32 f_send_aggr_buf = 0;
1730 s32 f_send_cur_buf = 0;
1731 s32 f_precopy_cur_buf = 0;
1732 s32 f_postcopy_cur_buf = 0;
1733 u32 mport;
1734 int index;
1735
1736 if (!card->mpa_tx.enabled ||
1737 (card->has_control_mask && (port == CTRL_PORT)) ||
1738 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1739 mwifiex_dbg(adapter, WARN,
1740 "info: %s: tx aggregation disabled\n",
1741 __func__);
1742
1743 f_send_cur_buf = 1;
1744 goto tx_curr_single;
1745 }
1746
1747 if (next_pkt_len) {
1748 /* More pkt in TX queue */
1749 mwifiex_dbg(adapter, INFO,
1750 "info: %s: more packets in queue.\n",
1751 __func__);
1752
1753 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1754 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1755 f_precopy_cur_buf = 1;
1756
1757 if (!(card->mp_wr_bitmap &
1758 (1 << card->curr_wr_port)) ||
1759 !MP_TX_AGGR_BUF_HAS_ROOM(
1760 card, pkt_len + next_pkt_len))
1761 f_send_aggr_buf = 1;
1762 } else {
1763 /* No room in Aggr buf, send it */
1764 f_send_aggr_buf = 1;
1765
1766 if (!(card->mp_wr_bitmap &
1767 (1 << card->curr_wr_port)))
1768 f_send_cur_buf = 1;
1769 else
1770 f_postcopy_cur_buf = 1;
1771 }
1772 } else {
1773 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1774 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1775 f_precopy_cur_buf = 1;
1776 else
1777 f_send_cur_buf = 1;
1778 }
1779 } else {
1780 /* Last pkt in TX queue */
1781 mwifiex_dbg(adapter, INFO,
1782 "info: %s: Last packet in Tx Queue.\n",
1783 __func__);
1784
1785 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1786 /* some packs in Aggr buf already */
1787 f_send_aggr_buf = 1;
1788
1789 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1790 f_precopy_cur_buf = 1;
1791 else
1792 /* No room in Aggr buf, send it */
1793 f_send_cur_buf = 1;
1794 } else {
1795 f_send_cur_buf = 1;
1796 }
1797 }
1798
1799 if (f_precopy_cur_buf) {
1800 mwifiex_dbg(adapter, DATA,
1801 "data: %s: precopy current buffer\n",
1802 __func__);
1803 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1804
1805 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1806 mp_tx_aggr_port_limit_reached(card))
1807 /* No more pkts allowed in Aggr buf, send it */
1808 f_send_aggr_buf = 1;
1809 }
1810
1811 if (f_send_aggr_buf) {
1812 mwifiex_dbg(adapter, DATA,
1813 "data: %s: send aggr buffer: %d %d\n",
1814 __func__, card->mpa_tx.start_port,
1815 card->mpa_tx.ports);
1816 if (card->supports_sdio_new_mode) {
1817 u32 port_count;
1818 int i;
1819
1820 for (i = 0, port_count = 0; i < card->max_ports; i++)
1821 if (card->mpa_tx.ports & BIT(i))
1822 port_count++;
1823
1824 /* Writing data from "start_port + 0" to "start_port +
1825 * port_count -1", so decrease the count by 1
1826 */
1827 port_count--;
1828 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1829 (port_count << 8)) + card->mpa_tx.start_port;
1830 } else {
1831 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1832 (card->mpa_tx.ports << 4)) +
1833 card->mpa_tx.start_port;
1834 }
1835
1836 if (card->mpa_tx.pkt_cnt == 1)
1837 mport = adapter->ioport + card->mpa_tx.start_port;
1838
1839 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1840 card->mpa_tx.buf_len, mport);
1841
1842 /* Save the last multi port tx aggreagation info to debug log */
1843 index = adapter->dbg.last_sdio_mp_index;
1844 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
1845 adapter->dbg.last_sdio_mp_index = index;
1846 adapter->dbg.last_mp_wr_ports[index] = mport;
1847 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
1848 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
1849 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
1850
1851 MP_TX_AGGR_BUF_RESET(card);
1852 }
1853
1854 tx_curr_single:
1855 if (f_send_cur_buf) {
1856 mwifiex_dbg(adapter, DATA,
1857 "data: %s: send current buffer %d\n",
1858 __func__, port);
1859 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1860 adapter->ioport + port);
1861 }
1862
1863 if (f_postcopy_cur_buf) {
1864 mwifiex_dbg(adapter, DATA,
1865 "data: %s: postcopy current buffer\n",
1866 __func__);
1867 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1868 }
1869
1870 return ret;
1871 }
1872
1873 /*
1874 * This function downloads data from driver to card.
1875 *
1876 * Both commands and data packets are transferred to the card by this
1877 * function.
1878 *
1879 * This function adds the SDIO specific header to the front of the buffer
1880 * before transferring. The header contains the length of the packet and
1881 * the type. The firmware handles the packets based upon this set type.
1882 */
mwifiex_sdio_host_to_card(struct mwifiex_adapter * adapter,u8 type,struct sk_buff * skb,struct mwifiex_tx_param * tx_param)1883 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1884 u8 type, struct sk_buff *skb,
1885 struct mwifiex_tx_param *tx_param)
1886 {
1887 struct sdio_mmc_card *card = adapter->card;
1888 int ret;
1889 u32 buf_block_len;
1890 u32 blk_size;
1891 u32 port = CTRL_PORT;
1892 u8 *payload = (u8 *)skb->data;
1893 u32 pkt_len = skb->len;
1894
1895 /* Allocate buffer and copy payload */
1896 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1897 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1898 put_unaligned_le16((u16)pkt_len, payload + 0);
1899 put_unaligned_le16((u32)type, payload + 2);
1900
1901
1902 /*
1903 * This is SDIO specific header
1904 * u16 length,
1905 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1906 * MWIFIEX_TYPE_EVENT = 3)
1907 */
1908 if (type == MWIFIEX_TYPE_DATA) {
1909 ret = mwifiex_get_wr_port_data(adapter, &port);
1910 if (ret) {
1911 mwifiex_dbg(adapter, ERROR,
1912 "%s: no wr_port available\n",
1913 __func__);
1914 return ret;
1915 }
1916 } else {
1917 adapter->cmd_sent = true;
1918 /* Type must be MWIFIEX_TYPE_CMD */
1919
1920 if (pkt_len <= adapter->intf_hdr_len ||
1921 pkt_len > MWIFIEX_UPLD_SIZE)
1922 mwifiex_dbg(adapter, ERROR,
1923 "%s: payload=%p, nb=%d\n",
1924 __func__, payload, pkt_len);
1925
1926 if (card->supports_sdio_new_mode)
1927 port = CMD_PORT_SLCT;
1928 }
1929
1930 /* Transfer data to card */
1931 pkt_len = buf_block_len * blk_size;
1932
1933 if (tx_param)
1934 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1935 port, tx_param->next_pkt_len
1936 );
1937 else
1938 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1939 port, 0);
1940
1941 if (ret) {
1942 if (type == MWIFIEX_TYPE_CMD)
1943 adapter->cmd_sent = false;
1944 if (type == MWIFIEX_TYPE_DATA) {
1945 adapter->data_sent = false;
1946 /* restore curr_wr_port in error cases */
1947 card->curr_wr_port = port;
1948 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1949 }
1950 } else {
1951 if (type == MWIFIEX_TYPE_DATA) {
1952 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1953 adapter->data_sent = true;
1954 else
1955 adapter->data_sent = false;
1956 }
1957 }
1958
1959 return ret;
1960 }
1961
1962 /*
1963 * This function allocates the MPA Tx and Rx buffers.
1964 */
mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter * adapter,u32 mpa_tx_buf_size,u32 mpa_rx_buf_size)1965 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1966 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1967 {
1968 struct sdio_mmc_card *card = adapter->card;
1969 u32 rx_buf_size;
1970 int ret = 0;
1971
1972 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1973 if (!card->mpa_tx.buf) {
1974 ret = -1;
1975 goto error;
1976 }
1977
1978 card->mpa_tx.buf_size = mpa_tx_buf_size;
1979
1980 rx_buf_size = max_t(u32, mpa_rx_buf_size,
1981 (u32)SDIO_MAX_AGGR_BUF_SIZE);
1982 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
1983 if (!card->mpa_rx.buf) {
1984 ret = -1;
1985 goto error;
1986 }
1987
1988 card->mpa_rx.buf_size = rx_buf_size;
1989
1990 error:
1991 if (ret) {
1992 kfree(card->mpa_tx.buf);
1993 kfree(card->mpa_rx.buf);
1994 card->mpa_tx.buf_size = 0;
1995 card->mpa_rx.buf_size = 0;
1996 }
1997
1998 return ret;
1999 }
2000
2001 /*
2002 * This function unregisters the SDIO device.
2003 *
2004 * The SDIO IRQ is released, the function is disabled and driver
2005 * data is set to null.
2006 */
2007 static void
mwifiex_unregister_dev(struct mwifiex_adapter * adapter)2008 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
2009 {
2010 struct sdio_mmc_card *card = adapter->card;
2011
2012 if (adapter->card) {
2013 card->adapter = NULL;
2014 sdio_claim_host(card->func);
2015 sdio_disable_func(card->func);
2016 sdio_release_host(card->func);
2017 }
2018 }
2019
2020 /*
2021 * This function registers the SDIO device.
2022 *
2023 * SDIO IRQ is claimed, block size is set and driver data is initialized.
2024 */
mwifiex_register_dev(struct mwifiex_adapter * adapter)2025 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
2026 {
2027 int ret;
2028 struct sdio_mmc_card *card = adapter->card;
2029 struct sdio_func *func = card->func;
2030
2031 /* save adapter pointer in card */
2032 card->adapter = adapter;
2033 adapter->tx_buf_size = card->tx_buf_size;
2034
2035 sdio_claim_host(func);
2036
2037 /* Set block size */
2038 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2039 sdio_release_host(func);
2040 if (ret) {
2041 mwifiex_dbg(adapter, ERROR,
2042 "cannot set SDIO block size\n");
2043 return ret;
2044 }
2045
2046 strcpy(adapter->fw_name, card->firmware);
2047 if (card->fw_dump_enh) {
2048 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2049 adapter->num_mem_types = 1;
2050 } else {
2051 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2052 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2053 }
2054
2055 return 0;
2056 }
2057
2058 /*
2059 * This function initializes the SDIO driver.
2060 *
2061 * The following initializations steps are followed -
2062 * - Read the Host interrupt status register to acknowledge
2063 * the first interrupt got from bootloader
2064 * - Disable host interrupt mask register
2065 * - Get SDIO port
2066 * - Initialize SDIO variables in card
2067 * - Allocate MP registers
2068 * - Allocate MPA Tx and Rx buffers
2069 */
mwifiex_init_sdio(struct mwifiex_adapter * adapter)2070 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2071 {
2072 struct sdio_mmc_card *card = adapter->card;
2073 const struct mwifiex_sdio_card_reg *reg = card->reg;
2074 int ret;
2075 u8 sdio_ireg;
2076
2077 sdio_set_drvdata(card->func, card);
2078
2079 /*
2080 * Read the host_int_status_reg for ACK the first interrupt got
2081 * from the bootloader. If we don't do this we get a interrupt
2082 * as soon as we register the irq.
2083 */
2084 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2085
2086 /* Get SDIO ioport */
2087 mwifiex_init_sdio_ioport(adapter);
2088
2089 /* Initialize SDIO variables in card */
2090 card->mp_rd_bitmap = 0;
2091 card->mp_wr_bitmap = 0;
2092 card->curr_rd_port = reg->start_rd_port;
2093 card->curr_wr_port = reg->start_wr_port;
2094
2095 card->mp_data_port_mask = reg->data_port_mask;
2096
2097 card->mpa_tx.buf_len = 0;
2098 card->mpa_tx.pkt_cnt = 0;
2099 card->mpa_tx.start_port = 0;
2100
2101 card->mpa_tx.enabled = 1;
2102 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2103
2104 card->mpa_rx.buf_len = 0;
2105 card->mpa_rx.pkt_cnt = 0;
2106 card->mpa_rx.start_port = 0;
2107
2108 card->mpa_rx.enabled = 1;
2109 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2110
2111 /* Allocate buffers for SDIO MP-A */
2112 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2113 if (!card->mp_regs)
2114 return -ENOMEM;
2115
2116 /* Allocate skb pointer buffers */
2117 card->mpa_rx.skb_arr = kcalloc(card->mp_agg_pkt_limit, sizeof(void *),
2118 GFP_KERNEL);
2119 if (!card->mpa_rx.skb_arr) {
2120 kfree(card->mp_regs);
2121 return -ENOMEM;
2122 }
2123
2124 card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit,
2125 sizeof(*card->mpa_rx.len_arr),
2126 GFP_KERNEL);
2127 if (!card->mpa_rx.len_arr) {
2128 kfree(card->mp_regs);
2129 kfree(card->mpa_rx.skb_arr);
2130 return -ENOMEM;
2131 }
2132
2133 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2134 card->mp_tx_agg_buf_size,
2135 card->mp_rx_agg_buf_size);
2136
2137 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2138 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2139 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2140 /* Disable rx single port aggregation */
2141 adapter->host_disable_sdio_rx_aggr = true;
2142
2143 ret = mwifiex_alloc_sdio_mpa_buffers
2144 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2145 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2146 if (ret) {
2147 /* Disable multi port aggregation */
2148 card->mpa_tx.enabled = 0;
2149 card->mpa_rx.enabled = 0;
2150 }
2151 }
2152
2153 adapter->auto_tdls = card->can_auto_tdls;
2154 adapter->ext_scan = card->can_ext_scan;
2155 return 0;
2156 }
2157
2158 /*
2159 * This function resets the MPA Tx and Rx buffers.
2160 */
mwifiex_cleanup_mpa_buf(struct mwifiex_adapter * adapter)2161 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2162 {
2163 struct sdio_mmc_card *card = adapter->card;
2164
2165 MP_TX_AGGR_BUF_RESET(card);
2166 MP_RX_AGGR_BUF_RESET(card);
2167 }
2168
2169 /*
2170 * This function cleans up the allocated card buffers.
2171 *
2172 * The following are freed by this function -
2173 * - MP registers
2174 * - MPA Tx buffer
2175 * - MPA Rx buffer
2176 */
mwifiex_cleanup_sdio(struct mwifiex_adapter * adapter)2177 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2178 {
2179 struct sdio_mmc_card *card = adapter->card;
2180
2181 cancel_work_sync(&card->work);
2182
2183 kfree(card->mp_regs);
2184 kfree(card->mpa_rx.skb_arr);
2185 kfree(card->mpa_rx.len_arr);
2186 kfree(card->mpa_tx.buf);
2187 kfree(card->mpa_rx.buf);
2188 }
2189
2190 /*
2191 * This function updates the MP end port in card.
2192 */
2193 static void
mwifiex_update_mp_end_port(struct mwifiex_adapter * adapter,u16 port)2194 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2195 {
2196 struct sdio_mmc_card *card = adapter->card;
2197 const struct mwifiex_sdio_card_reg *reg = card->reg;
2198 int i;
2199
2200 card->mp_end_port = port;
2201
2202 card->mp_data_port_mask = reg->data_port_mask;
2203
2204 if (reg->start_wr_port) {
2205 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2206 card->mp_data_port_mask &=
2207 ~(1 << (card->max_ports - i));
2208 }
2209
2210 card->curr_wr_port = reg->start_wr_port;
2211
2212 mwifiex_dbg(adapter, CMD,
2213 "cmd: mp_end_port %d, data port mask 0x%x\n",
2214 port, card->mp_data_port_mask);
2215 }
2216
mwifiex_sdio_card_reset_work(struct mwifiex_adapter * adapter)2217 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2218 {
2219 struct sdio_mmc_card *card = adapter->card;
2220 struct sdio_func *func = card->func;
2221 int ret;
2222
2223 mwifiex_shutdown_sw(adapter);
2224
2225 /* power cycle the adapter */
2226 sdio_claim_host(func);
2227 mmc_hw_reset(func->card->host);
2228 sdio_release_host(func);
2229
2230 /* Previous save_adapter won't be valid after this. We will cancel
2231 * pending work requests.
2232 */
2233 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags);
2234 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags);
2235
2236 ret = mwifiex_reinit_sw(adapter);
2237 if (ret)
2238 dev_err(&func->dev, "reinit failed: %d\n", ret);
2239 }
2240
2241 /* This function read/write firmware */
2242 static enum
mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter * adapter,u8 doneflag)2243 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2244 u8 doneflag)
2245 {
2246 struct sdio_mmc_card *card = adapter->card;
2247 int ret, tries;
2248 u8 ctrl_data = 0;
2249
2250 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2251 card->reg->fw_dump_ctrl, &ret);
2252 if (ret) {
2253 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2254 return RDWR_STATUS_FAILURE;
2255 }
2256 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2257 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2258 &ret);
2259 if (ret) {
2260 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2261 return RDWR_STATUS_FAILURE;
2262 }
2263 if (ctrl_data == FW_DUMP_DONE)
2264 break;
2265 if (doneflag && ctrl_data == doneflag)
2266 return RDWR_STATUS_DONE;
2267 if (ctrl_data != card->reg->fw_dump_host_ready) {
2268 mwifiex_dbg(adapter, WARN,
2269 "The ctrl reg was changed, re-try again\n");
2270 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2271 card->reg->fw_dump_ctrl, &ret);
2272 if (ret) {
2273 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2274 return RDWR_STATUS_FAILURE;
2275 }
2276 }
2277 usleep_range(100, 200);
2278 }
2279 if (ctrl_data == card->reg->fw_dump_host_ready) {
2280 mwifiex_dbg(adapter, ERROR,
2281 "Fail to pull ctrl_data\n");
2282 return RDWR_STATUS_FAILURE;
2283 }
2284
2285 return RDWR_STATUS_SUCCESS;
2286 }
2287
2288 /* This function dump firmware memory to file */
mwifiex_sdio_fw_dump(struct mwifiex_adapter * adapter)2289 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2290 {
2291 struct sdio_mmc_card *card = adapter->card;
2292 int ret = 0;
2293 unsigned int reg, reg_start, reg_end;
2294 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2295 enum rdwr_status stat;
2296 u32 memory_size;
2297
2298 if (!card->can_dump_fw)
2299 return;
2300
2301 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2302 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2303
2304 if (entry->mem_ptr) {
2305 vfree(entry->mem_ptr);
2306 entry->mem_ptr = NULL;
2307 }
2308 entry->mem_size = 0;
2309 }
2310
2311 mwifiex_pm_wakeup_card(adapter);
2312 sdio_claim_host(card->func);
2313
2314 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2315
2316 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2317 if (stat == RDWR_STATUS_FAILURE)
2318 goto done;
2319
2320 reg = card->reg->fw_dump_start;
2321 /* Read the number of the memories which will dump */
2322 dump_num = sdio_readb(card->func, reg, &ret);
2323 if (ret) {
2324 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2325 goto done;
2326 }
2327
2328 /* Read the length of every memory which will dump */
2329 for (idx = 0; idx < dump_num; idx++) {
2330 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2331
2332 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2333 if (stat == RDWR_STATUS_FAILURE)
2334 goto done;
2335
2336 memory_size = 0;
2337 reg = card->reg->fw_dump_start;
2338 for (i = 0; i < 4; i++) {
2339 read_reg = sdio_readb(card->func, reg, &ret);
2340 if (ret) {
2341 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2342 goto done;
2343 }
2344 memory_size |= (read_reg << i*8);
2345 reg++;
2346 }
2347
2348 if (memory_size == 0) {
2349 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2350 ret = mwifiex_write_reg(adapter,
2351 card->reg->fw_dump_ctrl,
2352 FW_DUMP_READ_DONE);
2353 if (ret) {
2354 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2355 return;
2356 }
2357 break;
2358 }
2359
2360 mwifiex_dbg(adapter, DUMP,
2361 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2362 entry->mem_ptr = vmalloc(memory_size + 1);
2363 entry->mem_size = memory_size;
2364 if (!entry->mem_ptr) {
2365 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2366 entry->mem_name);
2367 goto done;
2368 }
2369 dbg_ptr = entry->mem_ptr;
2370 end_ptr = dbg_ptr + memory_size;
2371
2372 doneflag = entry->done_flag;
2373 mwifiex_dbg(adapter, DUMP,
2374 "Start %s output, please wait...\n",
2375 entry->mem_name);
2376
2377 do {
2378 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2379 if (stat == RDWR_STATUS_FAILURE)
2380 goto done;
2381
2382 reg_start = card->reg->fw_dump_start;
2383 reg_end = card->reg->fw_dump_end;
2384 for (reg = reg_start; reg <= reg_end; reg++) {
2385 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2386 if (ret) {
2387 mwifiex_dbg(adapter, ERROR,
2388 "SDIO read err\n");
2389 goto done;
2390 }
2391 if (dbg_ptr < end_ptr)
2392 dbg_ptr++;
2393 else
2394 mwifiex_dbg(adapter, ERROR,
2395 "Allocated buf not enough\n");
2396 }
2397
2398 if (stat != RDWR_STATUS_DONE)
2399 continue;
2400
2401 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2402 entry->mem_name, dbg_ptr - entry->mem_ptr);
2403 break;
2404 } while (1);
2405 }
2406 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2407
2408 done:
2409 sdio_release_host(card->func);
2410 }
2411
mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter * adapter)2412 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2413 {
2414 struct sdio_mmc_card *card = adapter->card;
2415 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2416 unsigned int reg, reg_start, reg_end;
2417 u8 start_flag = 0, done_flag = 0;
2418 u8 *dbg_ptr, *end_ptr;
2419 enum rdwr_status stat;
2420 int ret = -1, tries;
2421
2422 if (!card->fw_dump_enh)
2423 return;
2424
2425 if (entry->mem_ptr) {
2426 vfree(entry->mem_ptr);
2427 entry->mem_ptr = NULL;
2428 }
2429 entry->mem_size = 0;
2430
2431 mwifiex_pm_wakeup_card(adapter);
2432 sdio_claim_host(card->func);
2433
2434 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2435
2436 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2437 if (stat == RDWR_STATUS_FAILURE)
2438 goto done;
2439
2440 reg_start = card->reg->fw_dump_start;
2441 reg_end = card->reg->fw_dump_end;
2442 for (reg = reg_start; reg <= reg_end; reg++) {
2443 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2444 start_flag = sdio_readb(card->func, reg, &ret);
2445 if (ret) {
2446 mwifiex_dbg(adapter, ERROR,
2447 "SDIO read err\n");
2448 goto done;
2449 }
2450 if (start_flag == 0)
2451 break;
2452 if (tries == MAX_POLL_TRIES) {
2453 mwifiex_dbg(adapter, ERROR,
2454 "FW not ready to dump\n");
2455 ret = -1;
2456 goto done;
2457 }
2458 }
2459 usleep_range(100, 200);
2460 }
2461
2462 entry->mem_ptr = vmalloc(0xf0000 + 1);
2463 if (!entry->mem_ptr) {
2464 ret = -1;
2465 goto done;
2466 }
2467 dbg_ptr = entry->mem_ptr;
2468 entry->mem_size = 0xf0000;
2469 end_ptr = dbg_ptr + entry->mem_size;
2470
2471 done_flag = entry->done_flag;
2472 mwifiex_dbg(adapter, DUMP,
2473 "Start %s output, please wait...\n", entry->mem_name);
2474
2475 while (true) {
2476 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2477 if (stat == RDWR_STATUS_FAILURE)
2478 goto done;
2479 for (reg = reg_start; reg <= reg_end; reg++) {
2480 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2481 if (ret) {
2482 mwifiex_dbg(adapter, ERROR,
2483 "SDIO read err\n");
2484 goto done;
2485 }
2486 dbg_ptr++;
2487 if (dbg_ptr >= end_ptr) {
2488 u8 *tmp_ptr;
2489
2490 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2491 if (!tmp_ptr)
2492 goto done;
2493
2494 memcpy(tmp_ptr, entry->mem_ptr,
2495 entry->mem_size);
2496 vfree(entry->mem_ptr);
2497 entry->mem_ptr = tmp_ptr;
2498 tmp_ptr = NULL;
2499 dbg_ptr = entry->mem_ptr + entry->mem_size;
2500 entry->mem_size += 0x4000;
2501 end_ptr = entry->mem_ptr + entry->mem_size;
2502 }
2503 }
2504 if (stat == RDWR_STATUS_DONE) {
2505 entry->mem_size = dbg_ptr - entry->mem_ptr;
2506 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2507 entry->mem_name, entry->mem_size);
2508 ret = 0;
2509 break;
2510 }
2511 }
2512 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2513
2514 done:
2515 if (ret) {
2516 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2517 if (entry->mem_ptr) {
2518 vfree(entry->mem_ptr);
2519 entry->mem_ptr = NULL;
2520 }
2521 entry->mem_size = 0;
2522 }
2523 sdio_release_host(card->func);
2524 }
2525
mwifiex_sdio_device_dump_work(struct mwifiex_adapter * adapter)2526 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2527 {
2528 struct sdio_mmc_card *card = adapter->card;
2529
2530 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE);
2531 if (!adapter->devdump_data) {
2532 mwifiex_dbg(adapter, ERROR,
2533 "vzalloc devdump data failure!\n");
2534 return;
2535 }
2536
2537 mwifiex_drv_info_dump(adapter);
2538 if (card->fw_dump_enh)
2539 mwifiex_sdio_generic_fw_dump(adapter);
2540 else
2541 mwifiex_sdio_fw_dump(adapter);
2542 mwifiex_prepare_fw_dump_info(adapter);
2543 mwifiex_upload_device_dump(adapter);
2544 }
2545
mwifiex_sdio_work(struct work_struct * work)2546 static void mwifiex_sdio_work(struct work_struct *work)
2547 {
2548 struct sdio_mmc_card *card =
2549 container_of(work, struct sdio_mmc_card, work);
2550
2551 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2552 &card->work_flags))
2553 mwifiex_sdio_device_dump_work(card->adapter);
2554 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2555 &card->work_flags))
2556 mwifiex_sdio_card_reset_work(card->adapter);
2557 }
2558
2559 /* This function resets the card */
mwifiex_sdio_card_reset(struct mwifiex_adapter * adapter)2560 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2561 {
2562 struct sdio_mmc_card *card = adapter->card;
2563
2564 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags))
2565 schedule_work(&card->work);
2566 }
2567
2568 /* This function dumps FW information */
mwifiex_sdio_device_dump(struct mwifiex_adapter * adapter)2569 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
2570 {
2571 struct sdio_mmc_card *card = adapter->card;
2572
2573 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2574 &card->work_flags))
2575 schedule_work(&card->work);
2576 }
2577
2578 /* Function to dump SDIO function registers and SDIO scratch registers in case
2579 * of FW crash
2580 */
2581 static int
mwifiex_sdio_reg_dump(struct mwifiex_adapter * adapter,char * drv_buf)2582 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2583 {
2584 char *p = drv_buf;
2585 struct sdio_mmc_card *cardp = adapter->card;
2586 int ret = 0;
2587 u8 count, func, data, index = 0, size = 0;
2588 u8 reg, reg_start, reg_end;
2589 char buf[256], *ptr;
2590
2591 if (!p)
2592 return 0;
2593
2594 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
2595
2596 mwifiex_pm_wakeup_card(adapter);
2597
2598 sdio_claim_host(cardp->func);
2599
2600 for (count = 0; count < 5; count++) {
2601 memset(buf, 0, sizeof(buf));
2602 ptr = buf;
2603
2604 switch (count) {
2605 case 0:
2606 /* Read the registers of SDIO function0 */
2607 func = count;
2608 reg_start = 0;
2609 reg_end = 9;
2610 break;
2611 case 1:
2612 /* Read the registers of SDIO function1 */
2613 func = count;
2614 reg_start = cardp->reg->func1_dump_reg_start;
2615 reg_end = cardp->reg->func1_dump_reg_end;
2616 break;
2617 case 2:
2618 index = 0;
2619 func = 1;
2620 reg_start = cardp->reg->func1_spec_reg_table[index++];
2621 size = cardp->reg->func1_spec_reg_num;
2622 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2623 break;
2624 default:
2625 /* Read the scratch registers of SDIO function1 */
2626 if (count == 4)
2627 mdelay(100);
2628 func = 1;
2629 reg_start = cardp->reg->func1_scratch_reg;
2630 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2631 }
2632
2633 if (count != 2)
2634 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2635 func, reg_start, reg_end);
2636 else
2637 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2638
2639 for (reg = reg_start; reg <= reg_end;) {
2640 if (func == 0)
2641 data = sdio_f0_readb(cardp->func, reg, &ret);
2642 else
2643 data = sdio_readb(cardp->func, reg, &ret);
2644
2645 if (count == 2)
2646 ptr += sprintf(ptr, "(%#x) ", reg);
2647 if (!ret) {
2648 ptr += sprintf(ptr, "%02x ", data);
2649 } else {
2650 ptr += sprintf(ptr, "ERR");
2651 break;
2652 }
2653
2654 if (count == 2 && reg < reg_end)
2655 reg = cardp->reg->func1_spec_reg_table[index++];
2656 else
2657 reg++;
2658 }
2659
2660 mwifiex_dbg(adapter, MSG, "%s\n", buf);
2661 p += sprintf(p, "%s\n", buf);
2662 }
2663
2664 sdio_release_host(cardp->func);
2665
2666 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
2667
2668 return p - drv_buf;
2669 }
2670
2671 /* sdio device/function initialization, code is extracted
2672 * from init_if handler and register_dev handler.
2673 */
mwifiex_sdio_up_dev(struct mwifiex_adapter * adapter)2674 static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter)
2675 {
2676 struct sdio_mmc_card *card = adapter->card;
2677 u8 sdio_ireg;
2678
2679 sdio_claim_host(card->func);
2680 sdio_enable_func(card->func);
2681 sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2682 sdio_release_host(card->func);
2683
2684 /* tx_buf_size might be changed to 3584 by firmware during
2685 * data transfer, we will reset to default size.
2686 */
2687 adapter->tx_buf_size = card->tx_buf_size;
2688
2689 /* Read the host_int_status_reg for ACK the first interrupt got
2690 * from the bootloader. If we don't do this we get a interrupt
2691 * as soon as we register the irq.
2692 */
2693 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2694
2695 mwifiex_init_sdio_ioport(adapter);
2696 }
2697
2698 static struct mwifiex_if_ops sdio_ops = {
2699 .init_if = mwifiex_init_sdio,
2700 .cleanup_if = mwifiex_cleanup_sdio,
2701 .check_fw_status = mwifiex_check_fw_status,
2702 .check_winner_status = mwifiex_check_winner_status,
2703 .prog_fw = mwifiex_prog_fw_w_helper,
2704 .register_dev = mwifiex_register_dev,
2705 .unregister_dev = mwifiex_unregister_dev,
2706 .enable_int = mwifiex_sdio_enable_host_int,
2707 .disable_int = mwifiex_sdio_disable_host_int,
2708 .process_int_status = mwifiex_process_int_status,
2709 .host_to_card = mwifiex_sdio_host_to_card,
2710 .wakeup = mwifiex_pm_wakeup_card,
2711 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2712
2713 /* SDIO specific */
2714 .update_mp_end_port = mwifiex_update_mp_end_port,
2715 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2716 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2717 .event_complete = mwifiex_sdio_event_complete,
2718 .dnld_fw = mwifiex_sdio_dnld_fw,
2719 .card_reset = mwifiex_sdio_card_reset,
2720 .reg_dump = mwifiex_sdio_reg_dump,
2721 .device_dump = mwifiex_sdio_device_dump,
2722 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2723 .up_dev = mwifiex_sdio_up_dev,
2724 };
2725
2726 module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver);
2727
2728 MODULE_AUTHOR("Marvell International Ltd.");
2729 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2730 MODULE_VERSION(SDIO_VERSION);
2731 MODULE_LICENSE("GPL v2");
2732 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2733 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2734 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2735 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
2736 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
2737 MODULE_FIRMWARE(SD8977_DEFAULT_FW_NAME);
2738 MODULE_FIRMWARE(SD8987_DEFAULT_FW_NAME);
2739 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
2740
