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i2c: gpio: fault-injector: refactor incomplete transfer
[linux/fpc-iii.git] / drivers / net / wireless / marvell / mwifiex / sdio.c
blobdfdcbc4f141af6dbbcfe144965e1642a7916fdfb
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 */
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
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 */
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 (!adapter->is_suspended) {
185 mwifiex_dbg(adapter, WARN,
186 "device already resumed\n");
187 return 0;
188 }
189
190 adapter->is_suspended = false;
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
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
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
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
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 (adapter->is_suspended) {
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 */
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
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 */
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 */
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
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 */
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 adapter->hs_enabling = false;
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 adapter->is_suspended = true;
464 adapter->hs_enabling = false;
465
466 return ret;
467 }
468
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 SD8997 */
493 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141)
494
495
496 /* WLAN IDs */
497 static const struct sdio_device_id mwifiex_ids[] = {
498 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
499 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
500 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
501 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
502 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
503 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
504 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
505 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
506 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
507 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
508 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
509 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
510 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997),
511 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
512 {},
513 };
514
515 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
516
517 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
518 .suspend = mwifiex_sdio_suspend,
519 .resume = mwifiex_sdio_resume,
520 };
521
522 static struct sdio_driver mwifiex_sdio = {
523 .name = "mwifiex_sdio",
524 .id_table = mwifiex_ids,
525 .probe = mwifiex_sdio_probe,
526 .remove = mwifiex_sdio_remove,
527 .drv = {
528 .owner = THIS_MODULE,
529 .coredump = mwifiex_sdio_coredump,
530 .pm = &mwifiex_sdio_pm_ops,
531 }
532 };
533
534 /*
535 * This function wakes up the card.
536 *
537 * A host power up command is written to the card configuration
538 * register to wake up the card.
539 */
540 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
541 {
542 mwifiex_dbg(adapter, EVENT,
543 "event: wakeup device...\n");
544
545 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
546 }
547
548 /*
549 * This function is called after the card has woken up.
550 *
551 * The card configuration register is reset.
552 */
553 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
554 {
555 mwifiex_dbg(adapter, EVENT,
556 "cmd: wakeup device completed\n");
557
558 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
559 }
560
561 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter,
562 struct mwifiex_fw_image *fw)
563 {
564 struct sdio_mmc_card *card = adapter->card;
565 int ret;
566
567 sdio_claim_host(card->func);
568 ret = mwifiex_dnld_fw(adapter, fw);
569 sdio_release_host(card->func);
570
571 return ret;
572 }
573
574 /*
575 * This function is used to initialize IO ports for the
576 * chipsets supporting SDIO new mode eg SD8897.
577 */
578 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
579 {
580 u8 reg;
581 struct sdio_mmc_card *card = adapter->card;
582
583 adapter->ioport = MEM_PORT;
584
585 /* enable sdio new mode */
586 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, &reg))
587 return -1;
588 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
589 reg | CMD53_NEW_MODE))
590 return -1;
591
592 /* Configure cmd port and enable reading rx length from the register */
593 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, &reg))
594 return -1;
595 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
596 reg | CMD_PORT_RD_LEN_EN))
597 return -1;
598
599 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
600 * completed
601 */
602 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, &reg))
603 return -1;
604 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
605 reg | CMD_PORT_AUTO_EN))
606 return -1;
607
608 return 0;
609 }
610
611 /* This function initializes the IO ports.
612 *
613 * The following operations are performed -
614 * - Read the IO ports (0, 1 and 2)
615 * - Set host interrupt Reset-To-Read to clear
616 * - Set auto re-enable interrupt
617 */
618 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
619 {
620 u8 reg;
621 struct sdio_mmc_card *card = adapter->card;
622
623 adapter->ioport = 0;
624
625 if (card->supports_sdio_new_mode) {
626 if (mwifiex_init_sdio_new_mode(adapter))
627 return -1;
628 goto cont;
629 }
630
631 /* Read the IO port */
632 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, &reg))
633 adapter->ioport |= (reg & 0xff);
634 else
635 return -1;
636
637 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, &reg))
638 adapter->ioport |= ((reg & 0xff) << 8);
639 else
640 return -1;
641
642 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, &reg))
643 adapter->ioport |= ((reg & 0xff) << 16);
644 else
645 return -1;
646 cont:
647 mwifiex_dbg(adapter, INFO,
648 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
649
650 /* Set Host interrupt reset to read to clear */
651 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, &reg))
652 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
653 reg | card->reg->sdio_int_mask);
654 else
655 return -1;
656
657 /* Dnld/Upld ready set to auto reset */
658 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, &reg))
659 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
660 reg | AUTO_RE_ENABLE_INT);
661 else
662 return -1;
663
664 return 0;
665 }
666
667 /*
668 * This function sends data to the card.
669 */
670 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
671 u8 *payload, u32 pkt_len, u32 port)
672 {
673 u32 i = 0;
674 int ret;
675
676 do {
677 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
678 if (ret) {
679 i++;
680 mwifiex_dbg(adapter, ERROR,
681 "host_to_card, write iomem\t"
682 "(%d) failed: %d\n", i, ret);
683 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
684 mwifiex_dbg(adapter, ERROR,
685 "write CFG reg failed\n");
686
687 ret = -1;
688 if (i > MAX_WRITE_IOMEM_RETRY)
689 return ret;
690 }
691 } while (ret == -1);
692
693 return ret;
694 }
695
696 /*
697 * This function gets the read port.
698 *
699 * If control port bit is set in MP read bitmap, the control port
700 * is returned, otherwise the current read port is returned and
701 * the value is increased (provided it does not reach the maximum
702 * limit, in which case it is reset to 1)
703 */
704 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
705 {
706 struct sdio_mmc_card *card = adapter->card;
707 const struct mwifiex_sdio_card_reg *reg = card->reg;
708 u32 rd_bitmap = card->mp_rd_bitmap;
709
710 mwifiex_dbg(adapter, DATA,
711 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
712
713 if (card->supports_sdio_new_mode) {
714 if (!(rd_bitmap & reg->data_port_mask))
715 return -1;
716 } else {
717 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
718 return -1;
719 }
720
721 if ((card->has_control_mask) &&
722 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
723 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
724 *port = CTRL_PORT;
725 mwifiex_dbg(adapter, DATA,
726 "data: port=%d mp_rd_bitmap=0x%08x\n",
727 *port, card->mp_rd_bitmap);
728 return 0;
729 }
730
731 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
732 return -1;
733
734 /* We are now handling the SDIO data ports */
735 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
736 *port = card->curr_rd_port;
737
738 if (++card->curr_rd_port == card->max_ports)
739 card->curr_rd_port = reg->start_rd_port;
740
741 mwifiex_dbg(adapter, DATA,
742 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
743 *port, rd_bitmap, card->mp_rd_bitmap);
744
745 return 0;
746 }
747
748 /*
749 * This function gets the write port for data.
750 *
751 * The current write port is returned if available and the value is
752 * increased (provided it does not reach the maximum limit, in which
753 * case it is reset to 1)
754 */
755 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
756 {
757 struct sdio_mmc_card *card = adapter->card;
758 const struct mwifiex_sdio_card_reg *reg = card->reg;
759 u32 wr_bitmap = card->mp_wr_bitmap;
760
761 mwifiex_dbg(adapter, DATA,
762 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
763
764 if (!(wr_bitmap & card->mp_data_port_mask)) {
765 adapter->data_sent = true;
766 return -EBUSY;
767 }
768
769 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
770 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
771 *port = card->curr_wr_port;
772 if (++card->curr_wr_port == card->mp_end_port)
773 card->curr_wr_port = reg->start_wr_port;
774 } else {
775 adapter->data_sent = true;
776 return -EBUSY;
777 }
778
779 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
780 mwifiex_dbg(adapter, ERROR,
781 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
782 *port, card->curr_wr_port, wr_bitmap,
783 card->mp_wr_bitmap);
784 return -1;
785 }
786
787 mwifiex_dbg(adapter, DATA,
788 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
789 *port, wr_bitmap, card->mp_wr_bitmap);
790
791 return 0;
792 }
793
794 /*
795 * This function polls the card status.
796 */
797 static int
798 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
799 {
800 struct sdio_mmc_card *card = adapter->card;
801 u32 tries;
802 u8 cs;
803
804 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
805 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
806 break;
807 else if ((cs & bits) == bits)
808 return 0;
809
810 usleep_range(10, 20);
811 }
812
813 mwifiex_dbg(adapter, ERROR,
814 "poll card status failed, tries = %d\n", tries);
815
816 return -1;
817 }
818
819 /*
820 * This function disables the host interrupt.
821 *
822 * The host interrupt mask is read, the disable bit is reset and
823 * written back to the card host interrupt mask register.
824 */
825 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
826 {
827 struct sdio_mmc_card *card = adapter->card;
828 struct sdio_func *func = card->func;
829
830 sdio_claim_host(func);
831 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
832 sdio_release_irq(func);
833 sdio_release_host(func);
834 }
835
836 /*
837 * This function reads the interrupt status from card.
838 */
839 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
840 {
841 struct sdio_mmc_card *card = adapter->card;
842 u8 sdio_ireg;
843 unsigned long flags;
844
845 if (mwifiex_read_data_sync(adapter, card->mp_regs,
846 card->reg->max_mp_regs,
847 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
848 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
849 return;
850 }
851
852 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
853 if (sdio_ireg) {
854 /*
855 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
856 * For SDIO new mode CMD port interrupts
857 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
858 * UP_LD_CMD_PORT_HOST_INT_STATUS
859 * Clear the interrupt status register
860 */
861 mwifiex_dbg(adapter, INTR,
862 "int: sdio_ireg = %#x\n", sdio_ireg);
863 spin_lock_irqsave(&adapter->int_lock, flags);
864 adapter->int_status |= sdio_ireg;
865 spin_unlock_irqrestore(&adapter->int_lock, flags);
866 }
867 }
868
869 /*
870 * SDIO interrupt handler.
871 *
872 * This function reads the interrupt status from firmware and handles
873 * the interrupt in current thread (ksdioirqd) right away.
874 */
875 static void
876 mwifiex_sdio_interrupt(struct sdio_func *func)
877 {
878 struct mwifiex_adapter *adapter;
879 struct sdio_mmc_card *card;
880
881 card = sdio_get_drvdata(func);
882 if (!card || !card->adapter) {
883 pr_err("int: func=%p card=%p adapter=%p\n",
884 func, card, card ? card->adapter : NULL);
885 return;
886 }
887 adapter = card->adapter;
888
889 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
890 adapter->ps_state = PS_STATE_AWAKE;
891
892 mwifiex_interrupt_status(adapter);
893 mwifiex_main_process(adapter);
894 }
895
896 /*
897 * This function enables the host interrupt.
898 *
899 * The host interrupt enable mask is written to the card
900 * host interrupt mask register.
901 */
902 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
903 {
904 struct sdio_mmc_card *card = adapter->card;
905 struct sdio_func *func = card->func;
906 int ret;
907
908 sdio_claim_host(func);
909
910 /* Request the SDIO IRQ */
911 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
912 if (ret) {
913 mwifiex_dbg(adapter, ERROR,
914 "claim irq failed: ret=%d\n", ret);
915 goto out;
916 }
917
918 /* Simply write the mask to the register */
919 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
920 card->reg->host_int_enable);
921 if (ret) {
922 mwifiex_dbg(adapter, ERROR,
923 "enable host interrupt failed\n");
924 sdio_release_irq(func);
925 }
926
927 out:
928 sdio_release_host(func);
929 return ret;
930 }
931
932 /*
933 * This function sends a data buffer to the card.
934 */
935 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
936 u32 *type, u8 *buffer,
937 u32 npayload, u32 ioport)
938 {
939 int ret;
940 u32 nb;
941
942 if (!buffer) {
943 mwifiex_dbg(adapter, ERROR,
944 "%s: buffer is NULL\n", __func__);
945 return -1;
946 }
947
948 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
949
950 if (ret) {
951 mwifiex_dbg(adapter, ERROR,
952 "%s: read iomem failed: %d\n", __func__,
953 ret);
954 return -1;
955 }
956
957 nb = get_unaligned_le16((buffer));
958 if (nb > npayload) {
959 mwifiex_dbg(adapter, ERROR,
960 "%s: invalid packet, nb=%d npayload=%d\n",
961 __func__, nb, npayload);
962 return -1;
963 }
964
965 *type = get_unaligned_le16((buffer + 2));
966
967 return ret;
968 }
969
970 /*
971 * This function downloads the firmware to the card.
972 *
973 * Firmware is downloaded to the card in blocks. Every block download
974 * is tested for CRC errors, and retried a number of times before
975 * returning failure.
976 */
977 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
978 struct mwifiex_fw_image *fw)
979 {
980 struct sdio_mmc_card *card = adapter->card;
981 const struct mwifiex_sdio_card_reg *reg = card->reg;
982 int ret;
983 u8 *firmware = fw->fw_buf;
984 u32 firmware_len = fw->fw_len;
985 u32 offset = 0;
986 u8 base0, base1;
987 u8 *fwbuf;
988 u16 len = 0;
989 u32 txlen, tx_blocks = 0, tries;
990 u32 i = 0;
991
992 if (!firmware_len) {
993 mwifiex_dbg(adapter, ERROR,
994 "firmware image not found! Terminating download\n");
995 return -1;
996 }
997
998 mwifiex_dbg(adapter, INFO,
999 "info: downloading FW image (%d bytes)\n",
1000 firmware_len);
1001
1002 /* Assume that the allocated buffer is 8-byte aligned */
1003 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
1004 if (!fwbuf)
1005 return -ENOMEM;
1006
1007 sdio_claim_host(card->func);
1008
1009 /* Perform firmware data transfer */
1010 do {
1011 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
1012 bits */
1013 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
1014 DN_LD_CARD_RDY);
1015 if (ret) {
1016 mwifiex_dbg(adapter, ERROR,
1017 "FW download with helper:\t"
1018 "poll status timeout @ %d\n", offset);
1019 goto done;
1020 }
1021
1022 /* More data? */
1023 if (offset >= firmware_len)
1024 break;
1025
1026 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1027 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
1028 &base0);
1029 if (ret) {
1030 mwifiex_dbg(adapter, ERROR,
1031 "dev BASE0 register read failed:\t"
1032 "base0=%#04X(%d). Terminating dnld\n",
1033 base0, base0);
1034 goto done;
1035 }
1036 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
1037 &base1);
1038 if (ret) {
1039 mwifiex_dbg(adapter, ERROR,
1040 "dev BASE1 register read failed:\t"
1041 "base1=%#04X(%d). Terminating dnld\n",
1042 base1, base1);
1043 goto done;
1044 }
1045 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
1046
1047 if (len)
1048 break;
1049
1050 usleep_range(10, 20);
1051 }
1052
1053 if (!len) {
1054 break;
1055 } else if (len > MWIFIEX_UPLD_SIZE) {
1056 mwifiex_dbg(adapter, ERROR,
1057 "FW dnld failed @ %d, invalid length %d\n",
1058 offset, len);
1059 ret = -1;
1060 goto done;
1061 }
1062
1063 txlen = len;
1064
1065 if (len & BIT(0)) {
1066 i++;
1067 if (i > MAX_WRITE_IOMEM_RETRY) {
1068 mwifiex_dbg(adapter, ERROR,
1069 "FW dnld failed @ %d, over max retry\n",
1070 offset);
1071 ret = -1;
1072 goto done;
1073 }
1074 mwifiex_dbg(adapter, ERROR,
1075 "CRC indicated by the helper:\t"
1076 "len = 0x%04X, txlen = %d\n", len, txlen);
1077 len &= ~BIT(0);
1078 /* Setting this to 0 to resend from same offset */
1079 txlen = 0;
1080 } else {
1081 i = 0;
1082
1083 /* Set blocksize to transfer - checking for last
1084 block */
1085 if (firmware_len - offset < txlen)
1086 txlen = firmware_len - offset;
1087
1088 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1089 / MWIFIEX_SDIO_BLOCK_SIZE;
1090
1091 /* Copy payload to buffer */
1092 memmove(fwbuf, &firmware[offset], txlen);
1093 }
1094
1095 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1096 MWIFIEX_SDIO_BLOCK_SIZE,
1097 adapter->ioport);
1098 if (ret) {
1099 mwifiex_dbg(adapter, ERROR,
1100 "FW download, write iomem (%d) failed @ %d\n",
1101 i, offset);
1102 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1103 mwifiex_dbg(adapter, ERROR,
1104 "write CFG reg failed\n");
1105
1106 ret = -1;
1107 goto done;
1108 }
1109
1110 offset += txlen;
1111 } while (true);
1112
1113 mwifiex_dbg(adapter, MSG,
1114 "info: FW download over, size %d bytes\n", offset);
1115
1116 ret = 0;
1117 done:
1118 sdio_release_host(card->func);
1119 kfree(fwbuf);
1120 return ret;
1121 }
1122
1123 /*
1124 * This function decode sdio aggreation pkt.
1125 *
1126 * Based on the the data block size and pkt_len,
1127 * skb data will be decoded to few packets.
1128 */
1129 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1130 struct sk_buff *skb)
1131 {
1132 u32 total_pkt_len, pkt_len;
1133 struct sk_buff *skb_deaggr;
1134 u16 blk_size;
1135 u8 blk_num;
1136 u8 *data;
1137
1138 data = skb->data;
1139 total_pkt_len = skb->len;
1140
1141 while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) {
1142 if (total_pkt_len < adapter->sdio_rx_block_size)
1143 break;
1144 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1145 blk_size = adapter->sdio_rx_block_size * blk_num;
1146 if (blk_size > total_pkt_len) {
1147 mwifiex_dbg(adapter, ERROR,
1148 "%s: error in blk_size,\t"
1149 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1150 __func__, blk_num, blk_size, total_pkt_len);
1151 break;
1152 }
1153 pkt_len = get_unaligned_le16((data +
1154 SDIO_HEADER_OFFSET));
1155 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1156 mwifiex_dbg(adapter, ERROR,
1157 "%s: error in pkt_len,\t"
1158 "pkt_len=%d, blk_size=%d\n",
1159 __func__, pkt_len, blk_size);
1160 break;
1161 }
1162
1163 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
1164 if (!skb_deaggr)
1165 break;
1166 skb_put(skb_deaggr, pkt_len);
1167 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1168 skb_pull(skb_deaggr, adapter->intf_hdr_len);
1169
1170 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1171 data += blk_size;
1172 total_pkt_len -= blk_size;
1173 }
1174 }
1175
1176 /*
1177 * This function decodes a received packet.
1178 *
1179 * Based on the type, the packet is treated as either a data, or
1180 * a command response, or an event, and the correct handler
1181 * function is invoked.
1182 */
1183 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1184 struct sk_buff *skb, u32 upld_typ)
1185 {
1186 u8 *cmd_buf;
1187 u16 pkt_len;
1188 struct mwifiex_rxinfo *rx_info;
1189
1190 pkt_len = get_unaligned_le16(skb->data);
1191
1192 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1193 skb_trim(skb, pkt_len);
1194 skb_pull(skb, adapter->intf_hdr_len);
1195 }
1196
1197 switch (upld_typ) {
1198 case MWIFIEX_TYPE_AGGR_DATA:
1199 mwifiex_dbg(adapter, INFO,
1200 "info: --- Rx: Aggr Data packet ---\n");
1201 rx_info = MWIFIEX_SKB_RXCB(skb);
1202 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1203 if (adapter->rx_work_enabled) {
1204 skb_queue_tail(&adapter->rx_data_q, skb);
1205 atomic_inc(&adapter->rx_pending);
1206 adapter->data_received = true;
1207 } else {
1208 mwifiex_deaggr_sdio_pkt(adapter, skb);
1209 dev_kfree_skb_any(skb);
1210 }
1211 break;
1212
1213 case MWIFIEX_TYPE_DATA:
1214 mwifiex_dbg(adapter, DATA,
1215 "info: --- Rx: Data packet ---\n");
1216 if (adapter->rx_work_enabled) {
1217 skb_queue_tail(&adapter->rx_data_q, skb);
1218 adapter->data_received = true;
1219 atomic_inc(&adapter->rx_pending);
1220 } else {
1221 mwifiex_handle_rx_packet(adapter, skb);
1222 }
1223 break;
1224
1225 case MWIFIEX_TYPE_CMD:
1226 mwifiex_dbg(adapter, CMD,
1227 "info: --- Rx: Cmd Response ---\n");
1228 /* take care of curr_cmd = NULL case */
1229 if (!adapter->curr_cmd) {
1230 cmd_buf = adapter->upld_buf;
1231
1232 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1233 mwifiex_process_sleep_confirm_resp(adapter,
1234 skb->data,
1235 skb->len);
1236
1237 memcpy(cmd_buf, skb->data,
1238 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1239 skb->len));
1240
1241 dev_kfree_skb_any(skb);
1242 } else {
1243 adapter->cmd_resp_received = true;
1244 adapter->curr_cmd->resp_skb = skb;
1245 }
1246 break;
1247
1248 case MWIFIEX_TYPE_EVENT:
1249 mwifiex_dbg(adapter, EVENT,
1250 "info: --- Rx: Event ---\n");
1251 adapter->event_cause = get_unaligned_le32(skb->data);
1252
1253 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1254 memcpy(adapter->event_body,
1255 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1256 skb->len);
1257
1258 /* event cause has been saved to adapter->event_cause */
1259 adapter->event_received = true;
1260 adapter->event_skb = skb;
1261
1262 break;
1263
1264 default:
1265 mwifiex_dbg(adapter, ERROR,
1266 "unknown upload type %#x\n", upld_typ);
1267 dev_kfree_skb_any(skb);
1268 break;
1269 }
1270
1271 return 0;
1272 }
1273
1274 /*
1275 * This function transfers received packets from card to driver, performing
1276 * aggregation if required.
1277 *
1278 * For data received on control port, or if aggregation is disabled, the
1279 * received buffers are uploaded as separate packets. However, if aggregation
1280 * is enabled and required, the buffers are copied onto an aggregation buffer,
1281 * provided there is space left, processed and finally uploaded.
1282 */
1283 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1284 u16 rx_len, u8 port)
1285 {
1286 struct sdio_mmc_card *card = adapter->card;
1287 s32 f_do_rx_aggr = 0;
1288 s32 f_do_rx_cur = 0;
1289 s32 f_aggr_cur = 0;
1290 s32 f_post_aggr_cur = 0;
1291 struct sk_buff *skb_deaggr;
1292 struct sk_buff *skb = NULL;
1293 u32 pkt_len, pkt_type, mport, pind;
1294 u8 *curr_ptr;
1295
1296 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1297 /* Read the command Resp without aggr */
1298 mwifiex_dbg(adapter, CMD,
1299 "info: %s: no aggregation for cmd\t"
1300 "response\n", __func__);
1301
1302 f_do_rx_cur = 1;
1303 goto rx_curr_single;
1304 }
1305
1306 if (!card->mpa_rx.enabled) {
1307 mwifiex_dbg(adapter, WARN,
1308 "info: %s: rx aggregation disabled\n",
1309 __func__);
1310
1311 f_do_rx_cur = 1;
1312 goto rx_curr_single;
1313 }
1314
1315 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1316 card->reg->data_port_mask)) ||
1317 (card->has_control_mask && (card->mp_rd_bitmap &
1318 (~((u32) CTRL_PORT_MASK))))) {
1319 /* Some more data RX pending */
1320 mwifiex_dbg(adapter, INFO,
1321 "info: %s: not last packet\n", __func__);
1322
1323 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1324 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1325 f_aggr_cur = 1;
1326 } else {
1327 /* No room in Aggr buf, do rx aggr now */
1328 f_do_rx_aggr = 1;
1329 f_post_aggr_cur = 1;
1330 }
1331 } else {
1332 /* Rx aggr not in progress */
1333 f_aggr_cur = 1;
1334 }
1335
1336 } else {
1337 /* No more data RX pending */
1338 mwifiex_dbg(adapter, INFO,
1339 "info: %s: last packet\n", __func__);
1340
1341 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1342 f_do_rx_aggr = 1;
1343 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1344 f_aggr_cur = 1;
1345 else
1346 /* No room in Aggr buf, do rx aggr now */
1347 f_do_rx_cur = 1;
1348 } else {
1349 f_do_rx_cur = 1;
1350 }
1351 }
1352
1353 if (f_aggr_cur) {
1354 mwifiex_dbg(adapter, INFO,
1355 "info: current packet aggregation\n");
1356 /* Curr pkt can be aggregated */
1357 mp_rx_aggr_setup(card, rx_len, port);
1358
1359 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1360 mp_rx_aggr_port_limit_reached(card)) {
1361 mwifiex_dbg(adapter, INFO,
1362 "info: %s: aggregated packet\t"
1363 "limit reached\n", __func__);
1364 /* No more pkts allowed in Aggr buf, rx it */
1365 f_do_rx_aggr = 1;
1366 }
1367 }
1368
1369 if (f_do_rx_aggr) {
1370 /* do aggr RX now */
1371 mwifiex_dbg(adapter, DATA,
1372 "info: do_rx_aggr: num of packets: %d\n",
1373 card->mpa_rx.pkt_cnt);
1374
1375 if (card->supports_sdio_new_mode) {
1376 int i;
1377 u32 port_count;
1378
1379 for (i = 0, port_count = 0; i < card->max_ports; i++)
1380 if (card->mpa_rx.ports & BIT(i))
1381 port_count++;
1382
1383 /* Reading data from "start_port + 0" to "start_port +
1384 * port_count -1", so decrease the count by 1
1385 */
1386 port_count--;
1387 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1388 (port_count << 8)) + card->mpa_rx.start_port;
1389 } else {
1390 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1391 (card->mpa_rx.ports << 4)) +
1392 card->mpa_rx.start_port;
1393 }
1394
1395 if (card->mpa_rx.pkt_cnt == 1)
1396 mport = adapter->ioport + card->mpa_rx.start_port;
1397
1398 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1399 card->mpa_rx.buf_len, mport, 1))
1400 goto error;
1401
1402 curr_ptr = card->mpa_rx.buf;
1403
1404 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1405 u32 *len_arr = card->mpa_rx.len_arr;
1406
1407 /* get curr PKT len & type */
1408 pkt_len = get_unaligned_le16(&curr_ptr[0]);
1409 pkt_type = get_unaligned_le16(&curr_ptr[2]);
1410
1411 /* copy pkt to deaggr buf */
1412 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1413 GFP_KERNEL);
1414 if (!skb_deaggr) {
1415 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1416 "drop pkt len=%d type=%d\n",
1417 pkt_len, pkt_type);
1418 curr_ptr += len_arr[pind];
1419 continue;
1420 }
1421
1422 skb_put(skb_deaggr, len_arr[pind]);
1423
1424 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1425 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1426 adapter->sdio_rx_aggr_enable)) &&
1427 (pkt_len <= len_arr[pind])) {
1428
1429 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1430
1431 skb_trim(skb_deaggr, pkt_len);
1432
1433 /* Process de-aggr packet */
1434 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1435 pkt_type);
1436 } else {
1437 mwifiex_dbg(adapter, ERROR,
1438 "drop wrong aggr pkt:\t"
1439 "sdio_single_port_rx_aggr=%d\t"
1440 "type=%d len=%d max_len=%d\n",
1441 adapter->sdio_rx_aggr_enable,
1442 pkt_type, pkt_len, len_arr[pind]);
1443 dev_kfree_skb_any(skb_deaggr);
1444 }
1445 curr_ptr += len_arr[pind];
1446 }
1447 MP_RX_AGGR_BUF_RESET(card);
1448 }
1449
1450 rx_curr_single:
1451 if (f_do_rx_cur) {
1452 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1453 port, rx_len);
1454
1455 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1456 if (!skb) {
1457 mwifiex_dbg(adapter, ERROR,
1458 "single skb allocated fail,\t"
1459 "drop pkt port=%d len=%d\n", port, rx_len);
1460 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1461 card->mpa_rx.buf, rx_len,
1462 adapter->ioport + port))
1463 goto error;
1464 return 0;
1465 }
1466
1467 skb_put(skb, rx_len);
1468
1469 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1470 skb->data, skb->len,
1471 adapter->ioport + port))
1472 goto error;
1473 if (!adapter->sdio_rx_aggr_enable &&
1474 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1475 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1476 "current SDIO RX Aggr not enabled\n",
1477 pkt_type);
1478 dev_kfree_skb_any(skb);
1479 return 0;
1480 }
1481
1482 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1483 }
1484 if (f_post_aggr_cur) {
1485 mwifiex_dbg(adapter, INFO,
1486 "info: current packet aggregation\n");
1487 /* Curr pkt can be aggregated */
1488 mp_rx_aggr_setup(card, rx_len, port);
1489 }
1490
1491 return 0;
1492 error:
1493 if (MP_RX_AGGR_IN_PROGRESS(card))
1494 MP_RX_AGGR_BUF_RESET(card);
1495
1496 if (f_do_rx_cur && skb)
1497 /* Single transfer pending. Free curr buff also */
1498 dev_kfree_skb_any(skb);
1499
1500 return -1;
1501 }
1502
1503 /*
1504 * This function checks the current interrupt status.
1505 *
1506 * The following interrupts are checked and handled by this function -
1507 * - Data sent
1508 * - Command sent
1509 * - Packets received
1510 *
1511 * Since the firmware does not generate download ready interrupt if the
1512 * port updated is command port only, command sent interrupt checking
1513 * should be done manually, and for every SDIO interrupt.
1514 *
1515 * In case of Rx packets received, the packets are uploaded from card to
1516 * host and processed accordingly.
1517 */
1518 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1519 {
1520 struct sdio_mmc_card *card = adapter->card;
1521 const struct mwifiex_sdio_card_reg *reg = card->reg;
1522 int ret = 0;
1523 u8 sdio_ireg;
1524 struct sk_buff *skb;
1525 u8 port = CTRL_PORT;
1526 u32 len_reg_l, len_reg_u;
1527 u32 rx_blocks;
1528 u16 rx_len;
1529 unsigned long flags;
1530 u32 bitmap;
1531 u8 cr;
1532
1533 spin_lock_irqsave(&adapter->int_lock, flags);
1534 sdio_ireg = adapter->int_status;
1535 adapter->int_status = 0;
1536 spin_unlock_irqrestore(&adapter->int_lock, flags);
1537
1538 if (!sdio_ireg)
1539 return ret;
1540
1541 /* Following interrupt is only for SDIO new mode */
1542 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1543 adapter->cmd_sent = false;
1544
1545 /* Following interrupt is only for SDIO new mode */
1546 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1547 u32 pkt_type;
1548
1549 /* read the len of control packet */
1550 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1551 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1552 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1553 if (rx_len <= adapter->intf_hdr_len ||
1554 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1555 MWIFIEX_RX_DATA_BUF_SIZE)
1556 return -1;
1557 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1558 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1559
1560 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1561 if (!skb)
1562 return -1;
1563
1564 skb_put(skb, rx_len);
1565
1566 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1567 skb->len, adapter->ioport |
1568 CMD_PORT_SLCT)) {
1569 mwifiex_dbg(adapter, ERROR,
1570 "%s: failed to card_to_host", __func__);
1571 dev_kfree_skb_any(skb);
1572 goto term_cmd;
1573 }
1574
1575 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1576 (pkt_type != MWIFIEX_TYPE_EVENT))
1577 mwifiex_dbg(adapter, ERROR,
1578 "%s:Received wrong packet on cmd port",
1579 __func__);
1580
1581 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1582 }
1583
1584 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1585 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1586 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1587 if (card->supports_sdio_new_mode) {
1588 bitmap |=
1589 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1590 bitmap |=
1591 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1592 }
1593 card->mp_wr_bitmap = bitmap;
1594
1595 mwifiex_dbg(adapter, INTR,
1596 "int: DNLD: wr_bitmap=0x%x\n",
1597 card->mp_wr_bitmap);
1598 if (adapter->data_sent &&
1599 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1600 mwifiex_dbg(adapter, INTR,
1601 "info: <--- Tx DONE Interrupt --->\n");
1602 adapter->data_sent = false;
1603 }
1604 }
1605
1606 /* As firmware will not generate download ready interrupt if the port
1607 updated is command port only, cmd_sent should be done for any SDIO
1608 interrupt. */
1609 if (card->has_control_mask && adapter->cmd_sent) {
1610 /* Check if firmware has attach buffer at command port and
1611 update just that in wr_bit_map. */
1612 card->mp_wr_bitmap |=
1613 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1614 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1615 adapter->cmd_sent = false;
1616 }
1617
1618 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1619 adapter->cmd_sent, adapter->data_sent);
1620 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1621 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1622 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1623 if (card->supports_sdio_new_mode) {
1624 bitmap |=
1625 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1626 bitmap |=
1627 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1628 }
1629 card->mp_rd_bitmap = bitmap;
1630 mwifiex_dbg(adapter, INTR,
1631 "int: UPLD: rd_bitmap=0x%x\n",
1632 card->mp_rd_bitmap);
1633
1634 while (true) {
1635 ret = mwifiex_get_rd_port(adapter, &port);
1636 if (ret) {
1637 mwifiex_dbg(adapter, INFO,
1638 "info: no more rd_port available\n");
1639 break;
1640 }
1641 len_reg_l = reg->rd_len_p0_l + (port << 1);
1642 len_reg_u = reg->rd_len_p0_u + (port << 1);
1643 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1644 rx_len |= (u16) card->mp_regs[len_reg_l];
1645 mwifiex_dbg(adapter, INFO,
1646 "info: RX: port=%d rx_len=%u\n",
1647 port, rx_len);
1648 rx_blocks =
1649 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1650 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1651 if (rx_len <= adapter->intf_hdr_len ||
1652 (card->mpa_rx.enabled &&
1653 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1654 card->mpa_rx.buf_size))) {
1655 mwifiex_dbg(adapter, ERROR,
1656 "invalid rx_len=%d\n",
1657 rx_len);
1658 return -1;
1659 }
1660
1661 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1662 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1663 rx_len);
1664
1665 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1666 port)) {
1667 mwifiex_dbg(adapter, ERROR,
1668 "card_to_host_mpa failed: int status=%#x\n",
1669 sdio_ireg);
1670 goto term_cmd;
1671 }
1672 }
1673 }
1674
1675 return 0;
1676
1677 term_cmd:
1678 /* terminate cmd */
1679 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1680 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
1681 else
1682 mwifiex_dbg(adapter, INFO,
1683 "info: CFG reg val = %d\n", cr);
1684
1685 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1686 mwifiex_dbg(adapter, ERROR,
1687 "write CFG reg failed\n");
1688 else
1689 mwifiex_dbg(adapter, INFO, "info: write success\n");
1690
1691 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1692 mwifiex_dbg(adapter, ERROR,
1693 "read CFG reg failed\n");
1694 else
1695 mwifiex_dbg(adapter, INFO,
1696 "info: CFG reg val =%x\n", cr);
1697
1698 return -1;
1699 }
1700
1701 /*
1702 * This function aggregates transmission buffers in driver and downloads
1703 * the aggregated packet to card.
1704 *
1705 * The individual packets are aggregated by copying into an aggregation
1706 * buffer and then downloaded to the card. Previous unsent packets in the
1707 * aggregation buffer are pre-copied first before new packets are added.
1708 * Aggregation is done till there is space left in the aggregation buffer,
1709 * or till new packets are available.
1710 *
1711 * The function will only download the packet to the card when aggregation
1712 * stops, otherwise it will just aggregate the packet in aggregation buffer
1713 * and return.
1714 */
1715 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1716 u8 *payload, u32 pkt_len, u32 port,
1717 u32 next_pkt_len)
1718 {
1719 struct sdio_mmc_card *card = adapter->card;
1720 int ret = 0;
1721 s32 f_send_aggr_buf = 0;
1722 s32 f_send_cur_buf = 0;
1723 s32 f_precopy_cur_buf = 0;
1724 s32 f_postcopy_cur_buf = 0;
1725 u32 mport;
1726 int index;
1727
1728 if (!card->mpa_tx.enabled ||
1729 (card->has_control_mask && (port == CTRL_PORT)) ||
1730 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1731 mwifiex_dbg(adapter, WARN,
1732 "info: %s: tx aggregation disabled\n",
1733 __func__);
1734
1735 f_send_cur_buf = 1;
1736 goto tx_curr_single;
1737 }
1738
1739 if (next_pkt_len) {
1740 /* More pkt in TX queue */
1741 mwifiex_dbg(adapter, INFO,
1742 "info: %s: more packets in queue.\n",
1743 __func__);
1744
1745 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1746 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1747 f_precopy_cur_buf = 1;
1748
1749 if (!(card->mp_wr_bitmap &
1750 (1 << card->curr_wr_port)) ||
1751 !MP_TX_AGGR_BUF_HAS_ROOM(
1752 card, pkt_len + next_pkt_len))
1753 f_send_aggr_buf = 1;
1754 } else {
1755 /* No room in Aggr buf, send it */
1756 f_send_aggr_buf = 1;
1757
1758 if (!(card->mp_wr_bitmap &
1759 (1 << card->curr_wr_port)))
1760 f_send_cur_buf = 1;
1761 else
1762 f_postcopy_cur_buf = 1;
1763 }
1764 } else {
1765 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1766 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1767 f_precopy_cur_buf = 1;
1768 else
1769 f_send_cur_buf = 1;
1770 }
1771 } else {
1772 /* Last pkt in TX queue */
1773 mwifiex_dbg(adapter, INFO,
1774 "info: %s: Last packet in Tx Queue.\n",
1775 __func__);
1776
1777 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1778 /* some packs in Aggr buf already */
1779 f_send_aggr_buf = 1;
1780
1781 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1782 f_precopy_cur_buf = 1;
1783 else
1784 /* No room in Aggr buf, send it */
1785 f_send_cur_buf = 1;
1786 } else {
1787 f_send_cur_buf = 1;
1788 }
1789 }
1790
1791 if (f_precopy_cur_buf) {
1792 mwifiex_dbg(adapter, DATA,
1793 "data: %s: precopy current buffer\n",
1794 __func__);
1795 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1796
1797 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1798 mp_tx_aggr_port_limit_reached(card))
1799 /* No more pkts allowed in Aggr buf, send it */
1800 f_send_aggr_buf = 1;
1801 }
1802
1803 if (f_send_aggr_buf) {
1804 mwifiex_dbg(adapter, DATA,
1805 "data: %s: send aggr buffer: %d %d\n",
1806 __func__, card->mpa_tx.start_port,
1807 card->mpa_tx.ports);
1808 if (card->supports_sdio_new_mode) {
1809 u32 port_count;
1810 int i;
1811
1812 for (i = 0, port_count = 0; i < card->max_ports; i++)
1813 if (card->mpa_tx.ports & BIT(i))
1814 port_count++;
1815
1816 /* Writing data from "start_port + 0" to "start_port +
1817 * port_count -1", so decrease the count by 1
1818 */
1819 port_count--;
1820 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1821 (port_count << 8)) + card->mpa_tx.start_port;
1822 } else {
1823 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1824 (card->mpa_tx.ports << 4)) +
1825 card->mpa_tx.start_port;
1826 }
1827
1828 if (card->mpa_tx.pkt_cnt == 1)
1829 mport = adapter->ioport + card->mpa_tx.start_port;
1830
1831 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1832 card->mpa_tx.buf_len, mport);
1833
1834 /* Save the last multi port tx aggreagation info to debug log */
1835 index = adapter->dbg.last_sdio_mp_index;
1836 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
1837 adapter->dbg.last_sdio_mp_index = index;
1838 adapter->dbg.last_mp_wr_ports[index] = mport;
1839 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
1840 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
1841 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
1842
1843 MP_TX_AGGR_BUF_RESET(card);
1844 }
1845
1846 tx_curr_single:
1847 if (f_send_cur_buf) {
1848 mwifiex_dbg(adapter, DATA,
1849 "data: %s: send current buffer %d\n",
1850 __func__, port);
1851 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1852 adapter->ioport + port);
1853 }
1854
1855 if (f_postcopy_cur_buf) {
1856 mwifiex_dbg(adapter, DATA,
1857 "data: %s: postcopy current buffer\n",
1858 __func__);
1859 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1860 }
1861
1862 return ret;
1863 }
1864
1865 /*
1866 * This function downloads data from driver to card.
1867 *
1868 * Both commands and data packets are transferred to the card by this
1869 * function.
1870 *
1871 * This function adds the SDIO specific header to the front of the buffer
1872 * before transferring. The header contains the length of the packet and
1873 * the type. The firmware handles the packets based upon this set type.
1874 */
1875 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1876 u8 type, struct sk_buff *skb,
1877 struct mwifiex_tx_param *tx_param)
1878 {
1879 struct sdio_mmc_card *card = adapter->card;
1880 int ret;
1881 u32 buf_block_len;
1882 u32 blk_size;
1883 u32 port = CTRL_PORT;
1884 u8 *payload = (u8 *)skb->data;
1885 u32 pkt_len = skb->len;
1886
1887 /* Allocate buffer and copy payload */
1888 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1889 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1890 put_unaligned_le16((u16)pkt_len, payload + 0);
1891 put_unaligned_le16((u32)type, payload + 2);
1892
1893
1894 /*
1895 * This is SDIO specific header
1896 * u16 length,
1897 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1898 * MWIFIEX_TYPE_EVENT = 3)
1899 */
1900 if (type == MWIFIEX_TYPE_DATA) {
1901 ret = mwifiex_get_wr_port_data(adapter, &port);
1902 if (ret) {
1903 mwifiex_dbg(adapter, ERROR,
1904 "%s: no wr_port available\n",
1905 __func__);
1906 return ret;
1907 }
1908 } else {
1909 adapter->cmd_sent = true;
1910 /* Type must be MWIFIEX_TYPE_CMD */
1911
1912 if (pkt_len <= adapter->intf_hdr_len ||
1913 pkt_len > MWIFIEX_UPLD_SIZE)
1914 mwifiex_dbg(adapter, ERROR,
1915 "%s: payload=%p, nb=%d\n",
1916 __func__, payload, pkt_len);
1917
1918 if (card->supports_sdio_new_mode)
1919 port = CMD_PORT_SLCT;
1920 }
1921
1922 /* Transfer data to card */
1923 pkt_len = buf_block_len * blk_size;
1924
1925 if (tx_param)
1926 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1927 port, tx_param->next_pkt_len
1928 );
1929 else
1930 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1931 port, 0);
1932
1933 if (ret) {
1934 if (type == MWIFIEX_TYPE_CMD)
1935 adapter->cmd_sent = false;
1936 if (type == MWIFIEX_TYPE_DATA) {
1937 adapter->data_sent = false;
1938 /* restore curr_wr_port in error cases */
1939 card->curr_wr_port = port;
1940 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1941 }
1942 } else {
1943 if (type == MWIFIEX_TYPE_DATA) {
1944 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1945 adapter->data_sent = true;
1946 else
1947 adapter->data_sent = false;
1948 }
1949 }
1950
1951 return ret;
1952 }
1953
1954 /*
1955 * This function allocates the MPA Tx and Rx buffers.
1956 */
1957 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1958 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1959 {
1960 struct sdio_mmc_card *card = adapter->card;
1961 u32 rx_buf_size;
1962 int ret = 0;
1963
1964 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1965 if (!card->mpa_tx.buf) {
1966 ret = -1;
1967 goto error;
1968 }
1969
1970 card->mpa_tx.buf_size = mpa_tx_buf_size;
1971
1972 rx_buf_size = max_t(u32, mpa_rx_buf_size,
1973 (u32)SDIO_MAX_AGGR_BUF_SIZE);
1974 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
1975 if (!card->mpa_rx.buf) {
1976 ret = -1;
1977 goto error;
1978 }
1979
1980 card->mpa_rx.buf_size = rx_buf_size;
1981
1982 error:
1983 if (ret) {
1984 kfree(card->mpa_tx.buf);
1985 kfree(card->mpa_rx.buf);
1986 card->mpa_tx.buf_size = 0;
1987 card->mpa_rx.buf_size = 0;
1988 }
1989
1990 return ret;
1991 }
1992
1993 /*
1994 * This function unregisters the SDIO device.
1995 *
1996 * The SDIO IRQ is released, the function is disabled and driver
1997 * data is set to null.
1998 */
1999 static void
2000 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
2001 {
2002 struct sdio_mmc_card *card = adapter->card;
2003
2004 if (adapter->card) {
2005 card->adapter = NULL;
2006 sdio_claim_host(card->func);
2007 sdio_disable_func(card->func);
2008 sdio_release_host(card->func);
2009 }
2010 }
2011
2012 /*
2013 * This function registers the SDIO device.
2014 *
2015 * SDIO IRQ is claimed, block size is set and driver data is initialized.
2016 */
2017 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
2018 {
2019 int ret;
2020 struct sdio_mmc_card *card = adapter->card;
2021 struct sdio_func *func = card->func;
2022
2023 /* save adapter pointer in card */
2024 card->adapter = adapter;
2025 adapter->tx_buf_size = card->tx_buf_size;
2026
2027 sdio_claim_host(func);
2028
2029 /* Set block size */
2030 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2031 sdio_release_host(func);
2032 if (ret) {
2033 mwifiex_dbg(adapter, ERROR,
2034 "cannot set SDIO block size\n");
2035 return ret;
2036 }
2037
2038 strcpy(adapter->fw_name, card->firmware);
2039 if (card->fw_dump_enh) {
2040 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2041 adapter->num_mem_types = 1;
2042 } else {
2043 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2044 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2045 }
2046
2047 return 0;
2048 }
2049
2050 /*
2051 * This function initializes the SDIO driver.
2052 *
2053 * The following initializations steps are followed -
2054 * - Read the Host interrupt status register to acknowledge
2055 * the first interrupt got from bootloader
2056 * - Disable host interrupt mask register
2057 * - Get SDIO port
2058 * - Initialize SDIO variables in card
2059 * - Allocate MP registers
2060 * - Allocate MPA Tx and Rx buffers
2061 */
2062 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2063 {
2064 struct sdio_mmc_card *card = adapter->card;
2065 const struct mwifiex_sdio_card_reg *reg = card->reg;
2066 int ret;
2067 u8 sdio_ireg;
2068
2069 sdio_set_drvdata(card->func, card);
2070
2071 /*
2072 * Read the host_int_status_reg for ACK the first interrupt got
2073 * from the bootloader. If we don't do this we get a interrupt
2074 * as soon as we register the irq.
2075 */
2076 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2077
2078 /* Get SDIO ioport */
2079 mwifiex_init_sdio_ioport(adapter);
2080
2081 /* Initialize SDIO variables in card */
2082 card->mp_rd_bitmap = 0;
2083 card->mp_wr_bitmap = 0;
2084 card->curr_rd_port = reg->start_rd_port;
2085 card->curr_wr_port = reg->start_wr_port;
2086
2087 card->mp_data_port_mask = reg->data_port_mask;
2088
2089 card->mpa_tx.buf_len = 0;
2090 card->mpa_tx.pkt_cnt = 0;
2091 card->mpa_tx.start_port = 0;
2092
2093 card->mpa_tx.enabled = 1;
2094 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2095
2096 card->mpa_rx.buf_len = 0;
2097 card->mpa_rx.pkt_cnt = 0;
2098 card->mpa_rx.start_port = 0;
2099
2100 card->mpa_rx.enabled = 1;
2101 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2102
2103 /* Allocate buffers for SDIO MP-A */
2104 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2105 if (!card->mp_regs)
2106 return -ENOMEM;
2107
2108 /* Allocate skb pointer buffers */
2109 card->mpa_rx.skb_arr = kcalloc(card->mp_agg_pkt_limit, sizeof(void *),
2110 GFP_KERNEL);
2111 if (!card->mpa_rx.skb_arr) {
2112 kfree(card->mp_regs);
2113 return -ENOMEM;
2114 }
2115
2116 card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit,
2117 sizeof(*card->mpa_rx.len_arr),
2118 GFP_KERNEL);
2119 if (!card->mpa_rx.len_arr) {
2120 kfree(card->mp_regs);
2121 kfree(card->mpa_rx.skb_arr);
2122 return -ENOMEM;
2123 }
2124
2125 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2126 card->mp_tx_agg_buf_size,
2127 card->mp_rx_agg_buf_size);
2128
2129 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2130 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2131 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2132 /* Disable rx single port aggregation */
2133 adapter->host_disable_sdio_rx_aggr = true;
2134
2135 ret = mwifiex_alloc_sdio_mpa_buffers
2136 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2137 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2138 if (ret) {
2139 /* Disable multi port aggregation */
2140 card->mpa_tx.enabled = 0;
2141 card->mpa_rx.enabled = 0;
2142 }
2143 }
2144
2145 adapter->auto_tdls = card->can_auto_tdls;
2146 adapter->ext_scan = card->can_ext_scan;
2147 return 0;
2148 }
2149
2150 /*
2151 * This function resets the MPA Tx and Rx buffers.
2152 */
2153 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2154 {
2155 struct sdio_mmc_card *card = adapter->card;
2156
2157 MP_TX_AGGR_BUF_RESET(card);
2158 MP_RX_AGGR_BUF_RESET(card);
2159 }
2160
2161 /*
2162 * This function cleans up the allocated card buffers.
2163 *
2164 * The following are freed by this function -
2165 * - MP registers
2166 * - MPA Tx buffer
2167 * - MPA Rx buffer
2168 */
2169 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2170 {
2171 struct sdio_mmc_card *card = adapter->card;
2172
2173 cancel_work_sync(&card->work);
2174
2175 kfree(card->mp_regs);
2176 kfree(card->mpa_rx.skb_arr);
2177 kfree(card->mpa_rx.len_arr);
2178 kfree(card->mpa_tx.buf);
2179 kfree(card->mpa_rx.buf);
2180 }
2181
2182 /*
2183 * This function updates the MP end port in card.
2184 */
2185 static void
2186 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2187 {
2188 struct sdio_mmc_card *card = adapter->card;
2189 const struct mwifiex_sdio_card_reg *reg = card->reg;
2190 int i;
2191
2192 card->mp_end_port = port;
2193
2194 card->mp_data_port_mask = reg->data_port_mask;
2195
2196 if (reg->start_wr_port) {
2197 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2198 card->mp_data_port_mask &=
2199 ~(1 << (card->max_ports - i));
2200 }
2201
2202 card->curr_wr_port = reg->start_wr_port;
2203
2204 mwifiex_dbg(adapter, CMD,
2205 "cmd: mp_end_port %d, data port mask 0x%x\n",
2206 port, card->mp_data_port_mask);
2207 }
2208
2209 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2210 {
2211 struct sdio_mmc_card *card = adapter->card;
2212 struct sdio_func *func = card->func;
2213 int ret;
2214
2215 mwifiex_shutdown_sw(adapter);
2216
2217 /* power cycle the adapter */
2218 sdio_claim_host(func);
2219 mmc_hw_reset(func->card->host);
2220 sdio_release_host(func);
2221
2222 /* Previous save_adapter won't be valid after this. We will cancel
2223 * pending work requests.
2224 */
2225 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags);
2226 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags);
2227
2228 ret = mwifiex_reinit_sw(adapter);
2229 if (ret)
2230 dev_err(&func->dev, "reinit failed: %d\n", ret);
2231 }
2232
2233 /* This function read/write firmware */
2234 static enum
2235 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2236 u8 doneflag)
2237 {
2238 struct sdio_mmc_card *card = adapter->card;
2239 int ret, tries;
2240 u8 ctrl_data = 0;
2241
2242 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2243 card->reg->fw_dump_ctrl, &ret);
2244 if (ret) {
2245 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2246 return RDWR_STATUS_FAILURE;
2247 }
2248 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2249 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2250 &ret);
2251 if (ret) {
2252 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2253 return RDWR_STATUS_FAILURE;
2254 }
2255 if (ctrl_data == FW_DUMP_DONE)
2256 break;
2257 if (doneflag && ctrl_data == doneflag)
2258 return RDWR_STATUS_DONE;
2259 if (ctrl_data != card->reg->fw_dump_host_ready) {
2260 mwifiex_dbg(adapter, WARN,
2261 "The ctrl reg was changed, re-try again\n");
2262 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2263 card->reg->fw_dump_ctrl, &ret);
2264 if (ret) {
2265 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2266 return RDWR_STATUS_FAILURE;
2267 }
2268 }
2269 usleep_range(100, 200);
2270 }
2271 if (ctrl_data == card->reg->fw_dump_host_ready) {
2272 mwifiex_dbg(adapter, ERROR,
2273 "Fail to pull ctrl_data\n");
2274 return RDWR_STATUS_FAILURE;
2275 }
2276
2277 return RDWR_STATUS_SUCCESS;
2278 }
2279
2280 /* This function dump firmware memory to file */
2281 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2282 {
2283 struct sdio_mmc_card *card = adapter->card;
2284 int ret = 0;
2285 unsigned int reg, reg_start, reg_end;
2286 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2287 enum rdwr_status stat;
2288 u32 memory_size;
2289
2290 if (!card->can_dump_fw)
2291 return;
2292
2293 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2294 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2295
2296 if (entry->mem_ptr) {
2297 vfree(entry->mem_ptr);
2298 entry->mem_ptr = NULL;
2299 }
2300 entry->mem_size = 0;
2301 }
2302
2303 mwifiex_pm_wakeup_card(adapter);
2304 sdio_claim_host(card->func);
2305
2306 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2307
2308 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2309 if (stat == RDWR_STATUS_FAILURE)
2310 goto done;
2311
2312 reg = card->reg->fw_dump_start;
2313 /* Read the number of the memories which will dump */
2314 dump_num = sdio_readb(card->func, reg, &ret);
2315 if (ret) {
2316 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2317 goto done;
2318 }
2319
2320 /* Read the length of every memory which will dump */
2321 for (idx = 0; idx < dump_num; idx++) {
2322 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2323
2324 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2325 if (stat == RDWR_STATUS_FAILURE)
2326 goto done;
2327
2328 memory_size = 0;
2329 reg = card->reg->fw_dump_start;
2330 for (i = 0; i < 4; i++) {
2331 read_reg = sdio_readb(card->func, reg, &ret);
2332 if (ret) {
2333 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2334 goto done;
2335 }
2336 memory_size |= (read_reg << i*8);
2337 reg++;
2338 }
2339
2340 if (memory_size == 0) {
2341 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2342 ret = mwifiex_write_reg(adapter,
2343 card->reg->fw_dump_ctrl,
2344 FW_DUMP_READ_DONE);
2345 if (ret) {
2346 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2347 return;
2348 }
2349 break;
2350 }
2351
2352 mwifiex_dbg(adapter, DUMP,
2353 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2354 entry->mem_ptr = vmalloc(memory_size + 1);
2355 entry->mem_size = memory_size;
2356 if (!entry->mem_ptr) {
2357 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2358 entry->mem_name);
2359 goto done;
2360 }
2361 dbg_ptr = entry->mem_ptr;
2362 end_ptr = dbg_ptr + memory_size;
2363
2364 doneflag = entry->done_flag;
2365 mwifiex_dbg(adapter, DUMP,
2366 "Start %s output, please wait...\n",
2367 entry->mem_name);
2368
2369 do {
2370 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2371 if (stat == RDWR_STATUS_FAILURE)
2372 goto done;
2373
2374 reg_start = card->reg->fw_dump_start;
2375 reg_end = card->reg->fw_dump_end;
2376 for (reg = reg_start; reg <= reg_end; reg++) {
2377 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2378 if (ret) {
2379 mwifiex_dbg(adapter, ERROR,
2380 "SDIO read err\n");
2381 goto done;
2382 }
2383 if (dbg_ptr < end_ptr)
2384 dbg_ptr++;
2385 else
2386 mwifiex_dbg(adapter, ERROR,
2387 "Allocated buf not enough\n");
2388 }
2389
2390 if (stat != RDWR_STATUS_DONE)
2391 continue;
2392
2393 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2394 entry->mem_name, dbg_ptr - entry->mem_ptr);
2395 break;
2396 } while (1);
2397 }
2398 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2399
2400 done:
2401 sdio_release_host(card->func);
2402 }
2403
2404 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2405 {
2406 struct sdio_mmc_card *card = adapter->card;
2407 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2408 unsigned int reg, reg_start, reg_end;
2409 u8 start_flag = 0, done_flag = 0;
2410 u8 *dbg_ptr, *end_ptr;
2411 enum rdwr_status stat;
2412 int ret = -1, tries;
2413
2414 if (!card->fw_dump_enh)
2415 return;
2416
2417 if (entry->mem_ptr) {
2418 vfree(entry->mem_ptr);
2419 entry->mem_ptr = NULL;
2420 }
2421 entry->mem_size = 0;
2422
2423 mwifiex_pm_wakeup_card(adapter);
2424 sdio_claim_host(card->func);
2425
2426 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2427
2428 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2429 if (stat == RDWR_STATUS_FAILURE)
2430 goto done;
2431
2432 reg_start = card->reg->fw_dump_start;
2433 reg_end = card->reg->fw_dump_end;
2434 for (reg = reg_start; reg <= reg_end; reg++) {
2435 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2436 start_flag = sdio_readb(card->func, reg, &ret);
2437 if (ret) {
2438 mwifiex_dbg(adapter, ERROR,
2439 "SDIO read err\n");
2440 goto done;
2441 }
2442 if (start_flag == 0)
2443 break;
2444 if (tries == MAX_POLL_TRIES) {
2445 mwifiex_dbg(adapter, ERROR,
2446 "FW not ready to dump\n");
2447 ret = -1;
2448 goto done;
2449 }
2450 }
2451 usleep_range(100, 200);
2452 }
2453
2454 entry->mem_ptr = vmalloc(0xf0000 + 1);
2455 if (!entry->mem_ptr) {
2456 ret = -1;
2457 goto done;
2458 }
2459 dbg_ptr = entry->mem_ptr;
2460 entry->mem_size = 0xf0000;
2461 end_ptr = dbg_ptr + entry->mem_size;
2462
2463 done_flag = entry->done_flag;
2464 mwifiex_dbg(adapter, DUMP,
2465 "Start %s output, please wait...\n", entry->mem_name);
2466
2467 while (true) {
2468 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2469 if (stat == RDWR_STATUS_FAILURE)
2470 goto done;
2471 for (reg = reg_start; reg <= reg_end; reg++) {
2472 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2473 if (ret) {
2474 mwifiex_dbg(adapter, ERROR,
2475 "SDIO read err\n");
2476 goto done;
2477 }
2478 dbg_ptr++;
2479 if (dbg_ptr >= end_ptr) {
2480 u8 *tmp_ptr;
2481
2482 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2483 if (!tmp_ptr)
2484 goto done;
2485
2486 memcpy(tmp_ptr, entry->mem_ptr,
2487 entry->mem_size);
2488 vfree(entry->mem_ptr);
2489 entry->mem_ptr = tmp_ptr;
2490 tmp_ptr = NULL;
2491 dbg_ptr = entry->mem_ptr + entry->mem_size;
2492 entry->mem_size += 0x4000;
2493 end_ptr = entry->mem_ptr + entry->mem_size;
2494 }
2495 }
2496 if (stat == RDWR_STATUS_DONE) {
2497 entry->mem_size = dbg_ptr - entry->mem_ptr;
2498 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2499 entry->mem_name, entry->mem_size);
2500 ret = 0;
2501 break;
2502 }
2503 }
2504 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2505
2506 done:
2507 if (ret) {
2508 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2509 if (entry->mem_ptr) {
2510 vfree(entry->mem_ptr);
2511 entry->mem_ptr = NULL;
2512 }
2513 entry->mem_size = 0;
2514 }
2515 sdio_release_host(card->func);
2516 }
2517
2518 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2519 {
2520 struct sdio_mmc_card *card = adapter->card;
2521
2522 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE);
2523 if (!adapter->devdump_data) {
2524 mwifiex_dbg(adapter, ERROR,
2525 "vzalloc devdump data failure!\n");
2526 return;
2527 }
2528
2529 mwifiex_drv_info_dump(adapter);
2530 if (card->fw_dump_enh)
2531 mwifiex_sdio_generic_fw_dump(adapter);
2532 else
2533 mwifiex_sdio_fw_dump(adapter);
2534 mwifiex_prepare_fw_dump_info(adapter);
2535 mwifiex_upload_device_dump(adapter);
2536 }
2537
2538 static void mwifiex_sdio_work(struct work_struct *work)
2539 {
2540 struct sdio_mmc_card *card =
2541 container_of(work, struct sdio_mmc_card, work);
2542
2543 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2544 &card->work_flags))
2545 mwifiex_sdio_device_dump_work(card->adapter);
2546 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2547 &card->work_flags))
2548 mwifiex_sdio_card_reset_work(card->adapter);
2549 }
2550
2551 /* This function resets the card */
2552 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2553 {
2554 struct sdio_mmc_card *card = adapter->card;
2555
2556 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags))
2557 schedule_work(&card->work);
2558 }
2559
2560 /* This function dumps FW information */
2561 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
2562 {
2563 struct sdio_mmc_card *card = adapter->card;
2564
2565 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2566 &card->work_flags))
2567 schedule_work(&card->work);
2568 }
2569
2570 /* Function to dump SDIO function registers and SDIO scratch registers in case
2571 * of FW crash
2572 */
2573 static int
2574 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2575 {
2576 char *p = drv_buf;
2577 struct sdio_mmc_card *cardp = adapter->card;
2578 int ret = 0;
2579 u8 count, func, data, index = 0, size = 0;
2580 u8 reg, reg_start, reg_end;
2581 char buf[256], *ptr;
2582
2583 if (!p)
2584 return 0;
2585
2586 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
2587
2588 mwifiex_pm_wakeup_card(adapter);
2589
2590 sdio_claim_host(cardp->func);
2591
2592 for (count = 0; count < 5; count++) {
2593 memset(buf, 0, sizeof(buf));
2594 ptr = buf;
2595
2596 switch (count) {
2597 case 0:
2598 /* Read the registers of SDIO function0 */
2599 func = count;
2600 reg_start = 0;
2601 reg_end = 9;
2602 break;
2603 case 1:
2604 /* Read the registers of SDIO function1 */
2605 func = count;
2606 reg_start = cardp->reg->func1_dump_reg_start;
2607 reg_end = cardp->reg->func1_dump_reg_end;
2608 break;
2609 case 2:
2610 index = 0;
2611 func = 1;
2612 reg_start = cardp->reg->func1_spec_reg_table[index++];
2613 size = cardp->reg->func1_spec_reg_num;
2614 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2615 break;
2616 default:
2617 /* Read the scratch registers of SDIO function1 */
2618 if (count == 4)
2619 mdelay(100);
2620 func = 1;
2621 reg_start = cardp->reg->func1_scratch_reg;
2622 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2623 }
2624
2625 if (count != 2)
2626 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2627 func, reg_start, reg_end);
2628 else
2629 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2630
2631 for (reg = reg_start; reg <= reg_end;) {
2632 if (func == 0)
2633 data = sdio_f0_readb(cardp->func, reg, &ret);
2634 else
2635 data = sdio_readb(cardp->func, reg, &ret);
2636
2637 if (count == 2)
2638 ptr += sprintf(ptr, "(%#x) ", reg);
2639 if (!ret) {
2640 ptr += sprintf(ptr, "%02x ", data);
2641 } else {
2642 ptr += sprintf(ptr, "ERR");
2643 break;
2644 }
2645
2646 if (count == 2 && reg < reg_end)
2647 reg = cardp->reg->func1_spec_reg_table[index++];
2648 else
2649 reg++;
2650 }
2651
2652 mwifiex_dbg(adapter, MSG, "%s\n", buf);
2653 p += sprintf(p, "%s\n", buf);
2654 }
2655
2656 sdio_release_host(cardp->func);
2657
2658 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
2659
2660 return p - drv_buf;
2661 }
2662
2663 /* sdio device/function initialization, code is extracted
2664 * from init_if handler and register_dev handler.
2665 */
2666 static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter)
2667 {
2668 struct sdio_mmc_card *card = adapter->card;
2669 u8 sdio_ireg;
2670
2671 sdio_claim_host(card->func);
2672 sdio_enable_func(card->func);
2673 sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2674 sdio_release_host(card->func);
2675
2676 /* tx_buf_size might be changed to 3584 by firmware during
2677 * data transfer, we will reset to default size.
2678 */
2679 adapter->tx_buf_size = card->tx_buf_size;
2680
2681 /* Read the host_int_status_reg for ACK the first interrupt got
2682 * from the bootloader. If we don't do this we get a interrupt
2683 * as soon as we register the irq.
2684 */
2685 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2686
2687 mwifiex_init_sdio_ioport(adapter);
2688 }
2689
2690 static struct mwifiex_if_ops sdio_ops = {
2691 .init_if = mwifiex_init_sdio,
2692 .cleanup_if = mwifiex_cleanup_sdio,
2693 .check_fw_status = mwifiex_check_fw_status,
2694 .check_winner_status = mwifiex_check_winner_status,
2695 .prog_fw = mwifiex_prog_fw_w_helper,
2696 .register_dev = mwifiex_register_dev,
2697 .unregister_dev = mwifiex_unregister_dev,
2698 .enable_int = mwifiex_sdio_enable_host_int,
2699 .disable_int = mwifiex_sdio_disable_host_int,
2700 .process_int_status = mwifiex_process_int_status,
2701 .host_to_card = mwifiex_sdio_host_to_card,
2702 .wakeup = mwifiex_pm_wakeup_card,
2703 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2704
2705 /* SDIO specific */
2706 .update_mp_end_port = mwifiex_update_mp_end_port,
2707 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2708 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2709 .event_complete = mwifiex_sdio_event_complete,
2710 .dnld_fw = mwifiex_sdio_dnld_fw,
2711 .card_reset = mwifiex_sdio_card_reset,
2712 .reg_dump = mwifiex_sdio_reg_dump,
2713 .device_dump = mwifiex_sdio_device_dump,
2714 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2715 .up_dev = mwifiex_sdio_up_dev,
2716 };
2717
2718 module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver);
2719
2720 MODULE_AUTHOR("Marvell International Ltd.");
2721 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2722 MODULE_VERSION(SDIO_VERSION);
2723 MODULE_LICENSE("GPL v2");
2724 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2725 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2726 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2727 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
2728 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
2729 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
Linux with added FPC-III support