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mwifiex: remove redundant GFP_DMA flag
[deliverable/linux.git] / drivers / net / wireless / marvell / mwifiex / sdio.c
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 /* The mwifiex_sdio_remove() callback function is called when
35 * user removes this module from kernel space or ejects
36 * the card from the slot. The driver handles these 2 cases
37 * differently.
38 * If the user is removing the module, the few commands (FUNC_SHUTDOWN,
39 * HS_CANCEL etc.) are sent to the firmware.
40 * If the card is removed, there is no need to send these command.
41 *
42 * The variable 'user_rmmod' is used to distinguish these two
43 * scenarios. This flag is initialized as FALSE in case the card
44 * is removed, and will be set to TRUE for module removal when
45 * module_exit function is called.
46 */
47 static u8 user_rmmod;
48
49 static struct mwifiex_if_ops sdio_ops;
50 static unsigned long iface_work_flags;
51
52 static struct semaphore add_remove_card_sem;
53
54 static struct memory_type_mapping generic_mem_type_map[] = {
55 {"DUMP", NULL, 0, 0xDD},
56 };
57
58 static struct memory_type_mapping mem_type_mapping_tbl[] = {
59 {"ITCM", NULL, 0, 0xF0},
60 {"DTCM", NULL, 0, 0xF1},
61 {"SQRAM", NULL, 0, 0xF2},
62 {"APU", NULL, 0, 0xF3},
63 {"CIU", NULL, 0, 0xF4},
64 {"ICU", NULL, 0, 0xF5},
65 {"MAC", NULL, 0, 0xF6},
66 {"EXT7", NULL, 0, 0xF7},
67 {"EXT8", NULL, 0, 0xF8},
68 {"EXT9", NULL, 0, 0xF9},
69 {"EXT10", NULL, 0, 0xFA},
70 {"EXT11", NULL, 0, 0xFB},
71 {"EXT12", NULL, 0, 0xFC},
72 {"EXT13", NULL, 0, 0xFD},
73 {"EXTLAST", NULL, 0, 0xFE},
74 };
75
76 /*
77 * SDIO probe.
78 *
79 * This function probes an mwifiex device and registers it. It allocates
80 * the card structure, enables SDIO function number and initiates the
81 * device registration and initialization procedure by adding a logical
82 * interface.
83 */
84 static int
85 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
86 {
87 int ret;
88 struct sdio_mmc_card *card = NULL;
89
90 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
91 func->vendor, func->device, func->class, func->num);
92
93 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
94 if (!card)
95 return -ENOMEM;
96
97 card->func = func;
98 card->device_id = id;
99
100 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
101
102 if (id->driver_data) {
103 struct mwifiex_sdio_device *data = (void *)id->driver_data;
104
105 card->firmware = data->firmware;
106 card->reg = data->reg;
107 card->max_ports = data->max_ports;
108 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
109 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
110 card->has_control_mask = data->has_control_mask;
111 card->tx_buf_size = data->tx_buf_size;
112 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
113 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
114 card->can_dump_fw = data->can_dump_fw;
115 card->fw_dump_enh = data->fw_dump_enh;
116 card->can_auto_tdls = data->can_auto_tdls;
117 card->can_ext_scan = data->can_ext_scan;
118 }
119
120 sdio_claim_host(func);
121 ret = sdio_enable_func(func);
122 sdio_release_host(func);
123
124 if (ret) {
125 pr_err("%s: failed to enable function\n", __func__);
126 kfree(card);
127 return -EIO;
128 }
129
130 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
131 MWIFIEX_SDIO)) {
132 pr_err("%s: add card failed\n", __func__);
133 kfree(card);
134 sdio_claim_host(func);
135 ret = sdio_disable_func(func);
136 sdio_release_host(func);
137 ret = -1;
138 }
139
140 return ret;
141 }
142
143 /*
144 * SDIO resume.
145 *
146 * Kernel needs to suspend all functions separately. Therefore all
147 * registered functions must have drivers with suspend and resume
148 * methods. Failing that the kernel simply removes the whole card.
149 *
150 * If already not resumed, this function turns on the traffic and
151 * sends a host sleep cancel request to the firmware.
152 */
153 static int mwifiex_sdio_resume(struct device *dev)
154 {
155 struct sdio_func *func = dev_to_sdio_func(dev);
156 struct sdio_mmc_card *card;
157 struct mwifiex_adapter *adapter;
158 mmc_pm_flag_t pm_flag = 0;
159
160 if (func) {
161 pm_flag = sdio_get_host_pm_caps(func);
162 card = sdio_get_drvdata(func);
163 if (!card || !card->adapter) {
164 pr_err("resume: invalid card or adapter\n");
165 return 0;
166 }
167 } else {
168 pr_err("resume: sdio_func is not specified\n");
169 return 0;
170 }
171
172 adapter = card->adapter;
173
174 if (!adapter->is_suspended) {
175 mwifiex_dbg(adapter, WARN,
176 "device already resumed\n");
177 return 0;
178 }
179
180 adapter->is_suspended = false;
181
182 /* Disable Host Sleep */
183 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
184 MWIFIEX_SYNC_CMD);
185
186 return 0;
187 }
188
189 /*
190 * SDIO remove.
191 *
192 * This function removes the interface and frees up the card structure.
193 */
194 static void
195 mwifiex_sdio_remove(struct sdio_func *func)
196 {
197 struct sdio_mmc_card *card;
198 struct mwifiex_adapter *adapter;
199 struct mwifiex_private *priv;
200
201 card = sdio_get_drvdata(func);
202 if (!card)
203 return;
204
205 adapter = card->adapter;
206 if (!adapter || !adapter->priv_num)
207 return;
208
209 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
210
211 if (user_rmmod) {
212 if (adapter->is_suspended)
213 mwifiex_sdio_resume(adapter->dev);
214
215 mwifiex_deauthenticate_all(adapter);
216
217 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
218 mwifiex_disable_auto_ds(priv);
219 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
220 }
221
222 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
223 }
224
225 /*
226 * SDIO suspend.
227 *
228 * Kernel needs to suspend all functions separately. Therefore all
229 * registered functions must have drivers with suspend and resume
230 * methods. Failing that the kernel simply removes the whole card.
231 *
232 * If already not suspended, this function allocates and sends a host
233 * sleep activate request to the firmware and turns off the traffic.
234 */
235 static int mwifiex_sdio_suspend(struct device *dev)
236 {
237 struct sdio_func *func = dev_to_sdio_func(dev);
238 struct sdio_mmc_card *card;
239 struct mwifiex_adapter *adapter;
240 mmc_pm_flag_t pm_flag = 0;
241 int ret = 0;
242
243 if (func) {
244 pm_flag = sdio_get_host_pm_caps(func);
245 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
246 sdio_func_id(func), pm_flag);
247 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
248 pr_err("%s: cannot remain alive while host is"
249 " suspended\n", sdio_func_id(func));
250 return -ENOSYS;
251 }
252
253 card = sdio_get_drvdata(func);
254 if (!card || !card->adapter) {
255 pr_err("suspend: invalid card or adapter\n");
256 return 0;
257 }
258 } else {
259 pr_err("suspend: sdio_func is not specified\n");
260 return 0;
261 }
262
263 adapter = card->adapter;
264
265 /* Enable the Host Sleep */
266 if (!mwifiex_enable_hs(adapter)) {
267 mwifiex_dbg(adapter, ERROR,
268 "cmd: failed to suspend\n");
269 adapter->hs_enabling = false;
270 return -EFAULT;
271 }
272
273 mwifiex_dbg(adapter, INFO,
274 "cmd: suspend with MMC_PM_KEEP_POWER\n");
275 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
276
277 /* Indicate device suspended */
278 adapter->is_suspended = true;
279 adapter->hs_enabling = false;
280
281 return ret;
282 }
283
284 /* Device ID for SD8786 */
285 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
286 /* Device ID for SD8787 */
287 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
288 /* Device ID for SD8797 */
289 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
290 /* Device ID for SD8897 */
291 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
292 /* Device ID for SD8887 */
293 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135)
294 /* Device ID for SD8801 */
295 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139)
296 /* Device ID for SD8997 */
297 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141)
298
299
300 /* WLAN IDs */
301 static const struct sdio_device_id mwifiex_ids[] = {
302 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
303 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
304 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
305 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
306 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
307 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
308 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
309 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
310 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
311 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
312 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
313 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
314 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997),
315 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
316 {},
317 };
318
319 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
320
321 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
322 .suspend = mwifiex_sdio_suspend,
323 .resume = mwifiex_sdio_resume,
324 };
325
326 static struct sdio_driver mwifiex_sdio = {
327 .name = "mwifiex_sdio",
328 .id_table = mwifiex_ids,
329 .probe = mwifiex_sdio_probe,
330 .remove = mwifiex_sdio_remove,
331 .drv = {
332 .owner = THIS_MODULE,
333 .pm = &mwifiex_sdio_pm_ops,
334 }
335 };
336
337 /* Write data into SDIO card register. Caller claims SDIO device. */
338 static int
339 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
340 {
341 int ret = -1;
342 sdio_writeb(func, data, reg, &ret);
343 return ret;
344 }
345
346 /*
347 * This function writes data into SDIO card register.
348 */
349 static int
350 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
351 {
352 struct sdio_mmc_card *card = adapter->card;
353 int ret;
354
355 sdio_claim_host(card->func);
356 ret = mwifiex_write_reg_locked(card->func, reg, data);
357 sdio_release_host(card->func);
358
359 return ret;
360 }
361
362 /*
363 * This function reads data from SDIO card register.
364 */
365 static int
366 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
367 {
368 struct sdio_mmc_card *card = adapter->card;
369 int ret = -1;
370 u8 val;
371
372 sdio_claim_host(card->func);
373 val = sdio_readb(card->func, reg, &ret);
374 sdio_release_host(card->func);
375
376 *data = val;
377
378 return ret;
379 }
380
381 /*
382 * This function writes multiple data into SDIO card memory.
383 *
384 * This does not work in suspended mode.
385 */
386 static int
387 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
388 u8 *buffer, u32 pkt_len, u32 port)
389 {
390 struct sdio_mmc_card *card = adapter->card;
391 int ret;
392 u8 blk_mode =
393 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
394 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
395 u32 blk_cnt =
396 (blk_mode ==
397 BLOCK_MODE) ? (pkt_len /
398 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
399 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
400
401 if (adapter->is_suspended) {
402 mwifiex_dbg(adapter, ERROR,
403 "%s: not allowed while suspended\n", __func__);
404 return -1;
405 }
406
407 sdio_claim_host(card->func);
408
409 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
410
411 sdio_release_host(card->func);
412
413 return ret;
414 }
415
416 /*
417 * This function reads multiple data from SDIO card memory.
418 */
419 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
420 u32 len, u32 port, u8 claim)
421 {
422 struct sdio_mmc_card *card = adapter->card;
423 int ret;
424 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
425 : BLOCK_MODE;
426 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
427 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
428 : len;
429 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
430
431 if (claim)
432 sdio_claim_host(card->func);
433
434 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
435
436 if (claim)
437 sdio_release_host(card->func);
438
439 return ret;
440 }
441
442 /*
443 * This function wakes up the card.
444 *
445 * A host power up command is written to the card configuration
446 * register to wake up the card.
447 */
448 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
449 {
450 mwifiex_dbg(adapter, EVENT,
451 "event: wakeup device...\n");
452
453 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
454 }
455
456 /*
457 * This function is called after the card has woken up.
458 *
459 * The card configuration register is reset.
460 */
461 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
462 {
463 mwifiex_dbg(adapter, EVENT,
464 "cmd: wakeup device completed\n");
465
466 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
467 }
468
469 /*
470 * This function is used to initialize IO ports for the
471 * chipsets supporting SDIO new mode eg SD8897.
472 */
473 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
474 {
475 u8 reg;
476 struct sdio_mmc_card *card = adapter->card;
477
478 adapter->ioport = MEM_PORT;
479
480 /* enable sdio new mode */
481 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, &reg))
482 return -1;
483 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
484 reg | CMD53_NEW_MODE))
485 return -1;
486
487 /* Configure cmd port and enable reading rx length from the register */
488 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, &reg))
489 return -1;
490 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
491 reg | CMD_PORT_RD_LEN_EN))
492 return -1;
493
494 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
495 * completed
496 */
497 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, &reg))
498 return -1;
499 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
500 reg | CMD_PORT_AUTO_EN))
501 return -1;
502
503 return 0;
504 }
505
506 /* This function initializes the IO ports.
507 *
508 * The following operations are performed -
509 * - Read the IO ports (0, 1 and 2)
510 * - Set host interrupt Reset-To-Read to clear
511 * - Set auto re-enable interrupt
512 */
513 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
514 {
515 u8 reg;
516 struct sdio_mmc_card *card = adapter->card;
517
518 adapter->ioport = 0;
519
520 if (card->supports_sdio_new_mode) {
521 if (mwifiex_init_sdio_new_mode(adapter))
522 return -1;
523 goto cont;
524 }
525
526 /* Read the IO port */
527 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, &reg))
528 adapter->ioport |= (reg & 0xff);
529 else
530 return -1;
531
532 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, &reg))
533 adapter->ioport |= ((reg & 0xff) << 8);
534 else
535 return -1;
536
537 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, &reg))
538 adapter->ioport |= ((reg & 0xff) << 16);
539 else
540 return -1;
541 cont:
542 mwifiex_dbg(adapter, INFO,
543 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
544
545 /* Set Host interrupt reset to read to clear */
546 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, &reg))
547 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
548 reg | card->reg->sdio_int_mask);
549 else
550 return -1;
551
552 /* Dnld/Upld ready set to auto reset */
553 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, &reg))
554 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
555 reg | AUTO_RE_ENABLE_INT);
556 else
557 return -1;
558
559 return 0;
560 }
561
562 /*
563 * This function sends data to the card.
564 */
565 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
566 u8 *payload, u32 pkt_len, u32 port)
567 {
568 u32 i = 0;
569 int ret;
570
571 do {
572 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
573 if (ret) {
574 i++;
575 mwifiex_dbg(adapter, ERROR,
576 "host_to_card, write iomem\t"
577 "(%d) failed: %d\n", i, ret);
578 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
579 mwifiex_dbg(adapter, ERROR,
580 "write CFG reg failed\n");
581
582 ret = -1;
583 if (i > MAX_WRITE_IOMEM_RETRY)
584 return ret;
585 }
586 } while (ret == -1);
587
588 return ret;
589 }
590
591 /*
592 * This function gets the read port.
593 *
594 * If control port bit is set in MP read bitmap, the control port
595 * is returned, otherwise the current read port is returned and
596 * the value is increased (provided it does not reach the maximum
597 * limit, in which case it is reset to 1)
598 */
599 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
600 {
601 struct sdio_mmc_card *card = adapter->card;
602 const struct mwifiex_sdio_card_reg *reg = card->reg;
603 u32 rd_bitmap = card->mp_rd_bitmap;
604
605 mwifiex_dbg(adapter, DATA,
606 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
607
608 if (card->supports_sdio_new_mode) {
609 if (!(rd_bitmap & reg->data_port_mask))
610 return -1;
611 } else {
612 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
613 return -1;
614 }
615
616 if ((card->has_control_mask) &&
617 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
618 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
619 *port = CTRL_PORT;
620 mwifiex_dbg(adapter, DATA,
621 "data: port=%d mp_rd_bitmap=0x%08x\n",
622 *port, card->mp_rd_bitmap);
623 return 0;
624 }
625
626 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
627 return -1;
628
629 /* We are now handling the SDIO data ports */
630 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
631 *port = card->curr_rd_port;
632
633 if (++card->curr_rd_port == card->max_ports)
634 card->curr_rd_port = reg->start_rd_port;
635
636 mwifiex_dbg(adapter, DATA,
637 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
638 *port, rd_bitmap, card->mp_rd_bitmap);
639
640 return 0;
641 }
642
643 /*
644 * This function gets the write port for data.
645 *
646 * The current write port is returned if available and the value is
647 * increased (provided it does not reach the maximum limit, in which
648 * case it is reset to 1)
649 */
650 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
651 {
652 struct sdio_mmc_card *card = adapter->card;
653 const struct mwifiex_sdio_card_reg *reg = card->reg;
654 u32 wr_bitmap = card->mp_wr_bitmap;
655
656 mwifiex_dbg(adapter, DATA,
657 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
658
659 if (!(wr_bitmap & card->mp_data_port_mask)) {
660 adapter->data_sent = true;
661 return -EBUSY;
662 }
663
664 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
665 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
666 *port = card->curr_wr_port;
667 if (++card->curr_wr_port == card->mp_end_port)
668 card->curr_wr_port = reg->start_wr_port;
669 } else {
670 adapter->data_sent = true;
671 return -EBUSY;
672 }
673
674 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
675 mwifiex_dbg(adapter, ERROR,
676 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
677 *port, card->curr_wr_port, wr_bitmap,
678 card->mp_wr_bitmap);
679 return -1;
680 }
681
682 mwifiex_dbg(adapter, DATA,
683 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
684 *port, wr_bitmap, card->mp_wr_bitmap);
685
686 return 0;
687 }
688
689 /*
690 * This function polls the card status.
691 */
692 static int
693 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
694 {
695 struct sdio_mmc_card *card = adapter->card;
696 u32 tries;
697 u8 cs;
698
699 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
700 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
701 break;
702 else if ((cs & bits) == bits)
703 return 0;
704
705 usleep_range(10, 20);
706 }
707
708 mwifiex_dbg(adapter, ERROR,
709 "poll card status failed, tries = %d\n", tries);
710
711 return -1;
712 }
713
714 /*
715 * This function reads the firmware status.
716 */
717 static int
718 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
719 {
720 struct sdio_mmc_card *card = adapter->card;
721 const struct mwifiex_sdio_card_reg *reg = card->reg;
722 u8 fws0, fws1;
723
724 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
725 return -1;
726
727 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
728 return -1;
729
730 *dat = (u16) ((fws1 << 8) | fws0);
731
732 return 0;
733 }
734
735 /*
736 * This function disables the host interrupt.
737 *
738 * The host interrupt mask is read, the disable bit is reset and
739 * written back to the card host interrupt mask register.
740 */
741 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
742 {
743 struct sdio_mmc_card *card = adapter->card;
744 struct sdio_func *func = card->func;
745
746 sdio_claim_host(func);
747 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
748 sdio_release_irq(func);
749 sdio_release_host(func);
750 }
751
752 /*
753 * This function reads the interrupt status from card.
754 */
755 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
756 {
757 struct sdio_mmc_card *card = adapter->card;
758 u8 sdio_ireg;
759 unsigned long flags;
760
761 if (mwifiex_read_data_sync(adapter, card->mp_regs,
762 card->reg->max_mp_regs,
763 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
764 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
765 return;
766 }
767
768 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
769 if (sdio_ireg) {
770 /*
771 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
772 * For SDIO new mode CMD port interrupts
773 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
774 * UP_LD_CMD_PORT_HOST_INT_STATUS
775 * Clear the interrupt status register
776 */
777 mwifiex_dbg(adapter, INTR,
778 "int: sdio_ireg = %#x\n", sdio_ireg);
779 spin_lock_irqsave(&adapter->int_lock, flags);
780 adapter->int_status |= sdio_ireg;
781 spin_unlock_irqrestore(&adapter->int_lock, flags);
782 }
783 }
784
785 /*
786 * SDIO interrupt handler.
787 *
788 * This function reads the interrupt status from firmware and handles
789 * the interrupt in current thread (ksdioirqd) right away.
790 */
791 static void
792 mwifiex_sdio_interrupt(struct sdio_func *func)
793 {
794 struct mwifiex_adapter *adapter;
795 struct sdio_mmc_card *card;
796
797 card = sdio_get_drvdata(func);
798 if (!card || !card->adapter) {
799 pr_err("int: func=%p card=%p adapter=%p\n",
800 func, card, card ? card->adapter : NULL);
801 return;
802 }
803 adapter = card->adapter;
804
805 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
806 adapter->ps_state = PS_STATE_AWAKE;
807
808 mwifiex_interrupt_status(adapter);
809 mwifiex_main_process(adapter);
810 }
811
812 /*
813 * This function enables the host interrupt.
814 *
815 * The host interrupt enable mask is written to the card
816 * host interrupt mask register.
817 */
818 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
819 {
820 struct sdio_mmc_card *card = adapter->card;
821 struct sdio_func *func = card->func;
822 int ret;
823
824 sdio_claim_host(func);
825
826 /* Request the SDIO IRQ */
827 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
828 if (ret) {
829 mwifiex_dbg(adapter, ERROR,
830 "claim irq failed: ret=%d\n", ret);
831 goto out;
832 }
833
834 /* Simply write the mask to the register */
835 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
836 card->reg->host_int_enable);
837 if (ret) {
838 mwifiex_dbg(adapter, ERROR,
839 "enable host interrupt failed\n");
840 sdio_release_irq(func);
841 }
842
843 out:
844 sdio_release_host(func);
845 return ret;
846 }
847
848 /*
849 * This function sends a data buffer to the card.
850 */
851 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
852 u32 *type, u8 *buffer,
853 u32 npayload, u32 ioport)
854 {
855 int ret;
856 u32 nb;
857
858 if (!buffer) {
859 mwifiex_dbg(adapter, ERROR,
860 "%s: buffer is NULL\n", __func__);
861 return -1;
862 }
863
864 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
865
866 if (ret) {
867 mwifiex_dbg(adapter, ERROR,
868 "%s: read iomem failed: %d\n", __func__,
869 ret);
870 return -1;
871 }
872
873 nb = le16_to_cpu(*(__le16 *) (buffer));
874 if (nb > npayload) {
875 mwifiex_dbg(adapter, ERROR,
876 "%s: invalid packet, nb=%d npayload=%d\n",
877 __func__, nb, npayload);
878 return -1;
879 }
880
881 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
882
883 return ret;
884 }
885
886 /*
887 * This function downloads the firmware to the card.
888 *
889 * Firmware is downloaded to the card in blocks. Every block download
890 * is tested for CRC errors, and retried a number of times before
891 * returning failure.
892 */
893 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
894 struct mwifiex_fw_image *fw)
895 {
896 struct sdio_mmc_card *card = adapter->card;
897 const struct mwifiex_sdio_card_reg *reg = card->reg;
898 int ret;
899 u8 *firmware = fw->fw_buf;
900 u32 firmware_len = fw->fw_len;
901 u32 offset = 0;
902 u8 base0, base1;
903 u8 *fwbuf;
904 u16 len = 0;
905 u32 txlen, tx_blocks = 0, tries;
906 u32 i = 0;
907
908 if (!firmware_len) {
909 mwifiex_dbg(adapter, ERROR,
910 "firmware image not found! Terminating download\n");
911 return -1;
912 }
913
914 mwifiex_dbg(adapter, INFO,
915 "info: downloading FW image (%d bytes)\n",
916 firmware_len);
917
918 /* Assume that the allocated buffer is 8-byte aligned */
919 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
920 if (!fwbuf)
921 return -ENOMEM;
922
923 sdio_claim_host(card->func);
924
925 /* Perform firmware data transfer */
926 do {
927 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
928 bits */
929 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
930 DN_LD_CARD_RDY);
931 if (ret) {
932 mwifiex_dbg(adapter, ERROR,
933 "FW download with helper:\t"
934 "poll status timeout @ %d\n", offset);
935 goto done;
936 }
937
938 /* More data? */
939 if (offset >= firmware_len)
940 break;
941
942 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
943 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
944 &base0);
945 if (ret) {
946 mwifiex_dbg(adapter, ERROR,
947 "dev BASE0 register read failed:\t"
948 "base0=%#04X(%d). Terminating dnld\n",
949 base0, base0);
950 goto done;
951 }
952 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
953 &base1);
954 if (ret) {
955 mwifiex_dbg(adapter, ERROR,
956 "dev BASE1 register read failed:\t"
957 "base1=%#04X(%d). Terminating dnld\n",
958 base1, base1);
959 goto done;
960 }
961 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
962
963 if (len)
964 break;
965
966 usleep_range(10, 20);
967 }
968
969 if (!len) {
970 break;
971 } else if (len > MWIFIEX_UPLD_SIZE) {
972 mwifiex_dbg(adapter, ERROR,
973 "FW dnld failed @ %d, invalid length %d\n",
974 offset, len);
975 ret = -1;
976 goto done;
977 }
978
979 txlen = len;
980
981 if (len & BIT(0)) {
982 i++;
983 if (i > MAX_WRITE_IOMEM_RETRY) {
984 mwifiex_dbg(adapter, ERROR,
985 "FW dnld failed @ %d, over max retry\n",
986 offset);
987 ret = -1;
988 goto done;
989 }
990 mwifiex_dbg(adapter, ERROR,
991 "CRC indicated by the helper:\t"
992 "len = 0x%04X, txlen = %d\n", len, txlen);
993 len &= ~BIT(0);
994 /* Setting this to 0 to resend from same offset */
995 txlen = 0;
996 } else {
997 i = 0;
998
999 /* Set blocksize to transfer - checking for last
1000 block */
1001 if (firmware_len - offset < txlen)
1002 txlen = firmware_len - offset;
1003
1004 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1005 / MWIFIEX_SDIO_BLOCK_SIZE;
1006
1007 /* Copy payload to buffer */
1008 memmove(fwbuf, &firmware[offset], txlen);
1009 }
1010
1011 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1012 MWIFIEX_SDIO_BLOCK_SIZE,
1013 adapter->ioport);
1014 if (ret) {
1015 mwifiex_dbg(adapter, ERROR,
1016 "FW download, write iomem (%d) failed @ %d\n",
1017 i, offset);
1018 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1019 mwifiex_dbg(adapter, ERROR,
1020 "write CFG reg failed\n");
1021
1022 ret = -1;
1023 goto done;
1024 }
1025
1026 offset += txlen;
1027 } while (true);
1028
1029 sdio_release_host(card->func);
1030
1031 mwifiex_dbg(adapter, MSG,
1032 "info: FW download over, size %d bytes\n", offset);
1033
1034 ret = 0;
1035 done:
1036 kfree(fwbuf);
1037 return ret;
1038 }
1039
1040 /*
1041 * This function checks the firmware status in card.
1042 */
1043 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
1044 u32 poll_num)
1045 {
1046 int ret = 0;
1047 u16 firmware_stat;
1048 u32 tries;
1049
1050 for (tries = 0; tries < poll_num; tries++) {
1051 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
1052 if (ret)
1053 continue;
1054 if (firmware_stat == FIRMWARE_READY_SDIO) {
1055 ret = 0;
1056 break;
1057 } else {
1058 msleep(100);
1059 ret = -1;
1060 }
1061 }
1062
1063 return ret;
1064 }
1065
1066 /* This function checks if WLAN is the winner.
1067 */
1068 static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
1069 {
1070 int ret = 0;
1071 u8 winner = 0;
1072 struct sdio_mmc_card *card = adapter->card;
1073
1074 if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner))
1075 return -1;
1076
1077 if (winner)
1078 adapter->winner = 0;
1079 else
1080 adapter->winner = 1;
1081
1082 return ret;
1083 }
1084
1085 /*
1086 * This function decode sdio aggreation pkt.
1087 *
1088 * Based on the the data block size and pkt_len,
1089 * skb data will be decoded to few packets.
1090 */
1091 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1092 struct sk_buff *skb)
1093 {
1094 u32 total_pkt_len, pkt_len;
1095 struct sk_buff *skb_deaggr;
1096 u32 pkt_type;
1097 u16 blk_size;
1098 u8 blk_num;
1099 u8 *data;
1100
1101 data = skb->data;
1102 total_pkt_len = skb->len;
1103
1104 while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) {
1105 if (total_pkt_len < adapter->sdio_rx_block_size)
1106 break;
1107 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1108 blk_size = adapter->sdio_rx_block_size * blk_num;
1109 if (blk_size > total_pkt_len) {
1110 mwifiex_dbg(adapter, ERROR,
1111 "%s: error in blk_size,\t"
1112 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1113 __func__, blk_num, blk_size, total_pkt_len);
1114 break;
1115 }
1116 pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET));
1117 pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET +
1118 2));
1119 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1120 mwifiex_dbg(adapter, ERROR,
1121 "%s: error in pkt_len,\t"
1122 "pkt_len=%d, blk_size=%d\n",
1123 __func__, pkt_len, blk_size);
1124 break;
1125 }
1126
1127 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
1128 if (!skb_deaggr)
1129 break;
1130 skb_put(skb_deaggr, pkt_len);
1131 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1132 skb_pull(skb_deaggr, INTF_HEADER_LEN);
1133
1134 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1135 data += blk_size;
1136 total_pkt_len -= blk_size;
1137 }
1138 }
1139
1140 /*
1141 * This function decodes a received packet.
1142 *
1143 * Based on the type, the packet is treated as either a data, or
1144 * a command response, or an event, and the correct handler
1145 * function is invoked.
1146 */
1147 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1148 struct sk_buff *skb, u32 upld_typ)
1149 {
1150 u8 *cmd_buf;
1151 __le16 *curr_ptr = (__le16 *)skb->data;
1152 u16 pkt_len = le16_to_cpu(*curr_ptr);
1153 struct mwifiex_rxinfo *rx_info;
1154
1155 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1156 skb_trim(skb, pkt_len);
1157 skb_pull(skb, INTF_HEADER_LEN);
1158 }
1159
1160 switch (upld_typ) {
1161 case MWIFIEX_TYPE_AGGR_DATA:
1162 mwifiex_dbg(adapter, INFO,
1163 "info: --- Rx: Aggr Data packet ---\n");
1164 rx_info = MWIFIEX_SKB_RXCB(skb);
1165 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1166 if (adapter->rx_work_enabled) {
1167 skb_queue_tail(&adapter->rx_data_q, skb);
1168 atomic_inc(&adapter->rx_pending);
1169 adapter->data_received = true;
1170 } else {
1171 mwifiex_deaggr_sdio_pkt(adapter, skb);
1172 dev_kfree_skb_any(skb);
1173 }
1174 break;
1175
1176 case MWIFIEX_TYPE_DATA:
1177 mwifiex_dbg(adapter, DATA,
1178 "info: --- Rx: Data packet ---\n");
1179 if (adapter->rx_work_enabled) {
1180 skb_queue_tail(&adapter->rx_data_q, skb);
1181 adapter->data_received = true;
1182 atomic_inc(&adapter->rx_pending);
1183 } else {
1184 mwifiex_handle_rx_packet(adapter, skb);
1185 }
1186 break;
1187
1188 case MWIFIEX_TYPE_CMD:
1189 mwifiex_dbg(adapter, CMD,
1190 "info: --- Rx: Cmd Response ---\n");
1191 /* take care of curr_cmd = NULL case */
1192 if (!adapter->curr_cmd) {
1193 cmd_buf = adapter->upld_buf;
1194
1195 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1196 mwifiex_process_sleep_confirm_resp(adapter,
1197 skb->data,
1198 skb->len);
1199
1200 memcpy(cmd_buf, skb->data,
1201 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1202 skb->len));
1203
1204 dev_kfree_skb_any(skb);
1205 } else {
1206 adapter->cmd_resp_received = true;
1207 adapter->curr_cmd->resp_skb = skb;
1208 }
1209 break;
1210
1211 case MWIFIEX_TYPE_EVENT:
1212 mwifiex_dbg(adapter, EVENT,
1213 "info: --- Rx: Event ---\n");
1214 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1215
1216 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1217 memcpy(adapter->event_body,
1218 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1219 skb->len);
1220
1221 /* event cause has been saved to adapter->event_cause */
1222 adapter->event_received = true;
1223 adapter->event_skb = skb;
1224
1225 break;
1226
1227 default:
1228 mwifiex_dbg(adapter, ERROR,
1229 "unknown upload type %#x\n", upld_typ);
1230 dev_kfree_skb_any(skb);
1231 break;
1232 }
1233
1234 return 0;
1235 }
1236
1237 /*
1238 * This function transfers received packets from card to driver, performing
1239 * aggregation if required.
1240 *
1241 * For data received on control port, or if aggregation is disabled, the
1242 * received buffers are uploaded as separate packets. However, if aggregation
1243 * is enabled and required, the buffers are copied onto an aggregation buffer,
1244 * provided there is space left, processed and finally uploaded.
1245 */
1246 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1247 u16 rx_len, u8 port)
1248 {
1249 struct sdio_mmc_card *card = adapter->card;
1250 s32 f_do_rx_aggr = 0;
1251 s32 f_do_rx_cur = 0;
1252 s32 f_aggr_cur = 0;
1253 s32 f_post_aggr_cur = 0;
1254 struct sk_buff *skb_deaggr;
1255 struct sk_buff *skb = NULL;
1256 u32 pkt_len, pkt_type, mport, pind;
1257 u8 *curr_ptr;
1258
1259 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1260 /* Read the command Resp without aggr */
1261 mwifiex_dbg(adapter, CMD,
1262 "info: %s: no aggregation for cmd\t"
1263 "response\n", __func__);
1264
1265 f_do_rx_cur = 1;
1266 goto rx_curr_single;
1267 }
1268
1269 if (!card->mpa_rx.enabled) {
1270 mwifiex_dbg(adapter, WARN,
1271 "info: %s: rx aggregation disabled\n",
1272 __func__);
1273
1274 f_do_rx_cur = 1;
1275 goto rx_curr_single;
1276 }
1277
1278 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1279 card->reg->data_port_mask)) ||
1280 (card->has_control_mask && (card->mp_rd_bitmap &
1281 (~((u32) CTRL_PORT_MASK))))) {
1282 /* Some more data RX pending */
1283 mwifiex_dbg(adapter, INFO,
1284 "info: %s: not last packet\n", __func__);
1285
1286 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1287 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1288 f_aggr_cur = 1;
1289 } else {
1290 /* No room in Aggr buf, do rx aggr now */
1291 f_do_rx_aggr = 1;
1292 f_post_aggr_cur = 1;
1293 }
1294 } else {
1295 /* Rx aggr not in progress */
1296 f_aggr_cur = 1;
1297 }
1298
1299 } else {
1300 /* No more data RX pending */
1301 mwifiex_dbg(adapter, INFO,
1302 "info: %s: last packet\n", __func__);
1303
1304 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1305 f_do_rx_aggr = 1;
1306 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1307 f_aggr_cur = 1;
1308 else
1309 /* No room in Aggr buf, do rx aggr now */
1310 f_do_rx_cur = 1;
1311 } else {
1312 f_do_rx_cur = 1;
1313 }
1314 }
1315
1316 if (f_aggr_cur) {
1317 mwifiex_dbg(adapter, INFO,
1318 "info: current packet aggregation\n");
1319 /* Curr pkt can be aggregated */
1320 mp_rx_aggr_setup(card, rx_len, port);
1321
1322 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1323 mp_rx_aggr_port_limit_reached(card)) {
1324 mwifiex_dbg(adapter, INFO,
1325 "info: %s: aggregated packet\t"
1326 "limit reached\n", __func__);
1327 /* No more pkts allowed in Aggr buf, rx it */
1328 f_do_rx_aggr = 1;
1329 }
1330 }
1331
1332 if (f_do_rx_aggr) {
1333 /* do aggr RX now */
1334 mwifiex_dbg(adapter, DATA,
1335 "info: do_rx_aggr: num of packets: %d\n",
1336 card->mpa_rx.pkt_cnt);
1337
1338 if (card->supports_sdio_new_mode) {
1339 int i;
1340 u32 port_count;
1341
1342 for (i = 0, port_count = 0; i < card->max_ports; i++)
1343 if (card->mpa_rx.ports & BIT(i))
1344 port_count++;
1345
1346 /* Reading data from "start_port + 0" to "start_port +
1347 * port_count -1", so decrease the count by 1
1348 */
1349 port_count--;
1350 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1351 (port_count << 8)) + card->mpa_rx.start_port;
1352 } else {
1353 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1354 (card->mpa_rx.ports << 4)) +
1355 card->mpa_rx.start_port;
1356 }
1357
1358 if (card->mpa_rx.pkt_cnt == 1)
1359 mport = adapter->ioport + port;
1360
1361 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1362 card->mpa_rx.buf_len, mport, 1))
1363 goto error;
1364
1365 curr_ptr = card->mpa_rx.buf;
1366
1367 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1368 u32 *len_arr = card->mpa_rx.len_arr;
1369
1370 /* get curr PKT len & type */
1371 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1372 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1373
1374 /* copy pkt to deaggr buf */
1375 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1376 GFP_KERNEL);
1377 if (!skb_deaggr) {
1378 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1379 "drop pkt len=%d type=%d\n",
1380 pkt_len, pkt_type);
1381 curr_ptr += len_arr[pind];
1382 continue;
1383 }
1384
1385 skb_put(skb_deaggr, len_arr[pind]);
1386
1387 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1388 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1389 adapter->sdio_rx_aggr_enable)) &&
1390 (pkt_len <= len_arr[pind])) {
1391
1392 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1393
1394 skb_trim(skb_deaggr, pkt_len);
1395
1396 /* Process de-aggr packet */
1397 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1398 pkt_type);
1399 } else {
1400 mwifiex_dbg(adapter, ERROR,
1401 "drop wrong aggr pkt:\t"
1402 "sdio_single_port_rx_aggr=%d\t"
1403 "type=%d len=%d max_len=%d\n",
1404 adapter->sdio_rx_aggr_enable,
1405 pkt_type, pkt_len, len_arr[pind]);
1406 dev_kfree_skb_any(skb_deaggr);
1407 }
1408 curr_ptr += len_arr[pind];
1409 }
1410 MP_RX_AGGR_BUF_RESET(card);
1411 }
1412
1413 rx_curr_single:
1414 if (f_do_rx_cur) {
1415 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1416 port, rx_len);
1417
1418 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1419 if (!skb) {
1420 mwifiex_dbg(adapter, ERROR,
1421 "single skb allocated fail,\t"
1422 "drop pkt port=%d len=%d\n", port, rx_len);
1423 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1424 card->mpa_rx.buf, rx_len,
1425 adapter->ioport + port))
1426 goto error;
1427 return 0;
1428 }
1429
1430 skb_put(skb, rx_len);
1431
1432 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1433 skb->data, skb->len,
1434 adapter->ioport + port))
1435 goto error;
1436 if (!adapter->sdio_rx_aggr_enable &&
1437 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1438 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1439 "current SDIO RX Aggr not enabled\n",
1440 pkt_type);
1441 dev_kfree_skb_any(skb);
1442 return 0;
1443 }
1444
1445 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1446 }
1447 if (f_post_aggr_cur) {
1448 mwifiex_dbg(adapter, INFO,
1449 "info: current packet aggregation\n");
1450 /* Curr pkt can be aggregated */
1451 mp_rx_aggr_setup(card, rx_len, port);
1452 }
1453
1454 return 0;
1455 error:
1456 if (MP_RX_AGGR_IN_PROGRESS(card))
1457 MP_RX_AGGR_BUF_RESET(card);
1458
1459 if (f_do_rx_cur && skb)
1460 /* Single transfer pending. Free curr buff also */
1461 dev_kfree_skb_any(skb);
1462
1463 return -1;
1464 }
1465
1466 /*
1467 * This function checks the current interrupt status.
1468 *
1469 * The following interrupts are checked and handled by this function -
1470 * - Data sent
1471 * - Command sent
1472 * - Packets received
1473 *
1474 * Since the firmware does not generate download ready interrupt if the
1475 * port updated is command port only, command sent interrupt checking
1476 * should be done manually, and for every SDIO interrupt.
1477 *
1478 * In case of Rx packets received, the packets are uploaded from card to
1479 * host and processed accordingly.
1480 */
1481 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1482 {
1483 struct sdio_mmc_card *card = adapter->card;
1484 const struct mwifiex_sdio_card_reg *reg = card->reg;
1485 int ret = 0;
1486 u8 sdio_ireg;
1487 struct sk_buff *skb;
1488 u8 port = CTRL_PORT;
1489 u32 len_reg_l, len_reg_u;
1490 u32 rx_blocks;
1491 u16 rx_len;
1492 unsigned long flags;
1493 u32 bitmap;
1494 u8 cr;
1495
1496 spin_lock_irqsave(&adapter->int_lock, flags);
1497 sdio_ireg = adapter->int_status;
1498 adapter->int_status = 0;
1499 spin_unlock_irqrestore(&adapter->int_lock, flags);
1500
1501 if (!sdio_ireg)
1502 return ret;
1503
1504 /* Following interrupt is only for SDIO new mode */
1505 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1506 adapter->cmd_sent = false;
1507
1508 /* Following interrupt is only for SDIO new mode */
1509 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1510 u32 pkt_type;
1511
1512 /* read the len of control packet */
1513 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1514 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1515 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1516 if (rx_len <= INTF_HEADER_LEN ||
1517 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1518 MWIFIEX_RX_DATA_BUF_SIZE)
1519 return -1;
1520 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1521 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1522
1523 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1524 if (!skb)
1525 return -1;
1526
1527 skb_put(skb, rx_len);
1528
1529 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1530 skb->len, adapter->ioport |
1531 CMD_PORT_SLCT)) {
1532 mwifiex_dbg(adapter, ERROR,
1533 "%s: failed to card_to_host", __func__);
1534 dev_kfree_skb_any(skb);
1535 goto term_cmd;
1536 }
1537
1538 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1539 (pkt_type != MWIFIEX_TYPE_EVENT))
1540 mwifiex_dbg(adapter, ERROR,
1541 "%s:Received wrong packet on cmd port",
1542 __func__);
1543
1544 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1545 }
1546
1547 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1548 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1549 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1550 if (card->supports_sdio_new_mode) {
1551 bitmap |=
1552 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1553 bitmap |=
1554 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1555 }
1556 card->mp_wr_bitmap = bitmap;
1557
1558 mwifiex_dbg(adapter, INTR,
1559 "int: DNLD: wr_bitmap=0x%x\n",
1560 card->mp_wr_bitmap);
1561 if (adapter->data_sent &&
1562 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1563 mwifiex_dbg(adapter, INTR,
1564 "info: <--- Tx DONE Interrupt --->\n");
1565 adapter->data_sent = false;
1566 }
1567 }
1568
1569 /* As firmware will not generate download ready interrupt if the port
1570 updated is command port only, cmd_sent should be done for any SDIO
1571 interrupt. */
1572 if (card->has_control_mask && adapter->cmd_sent) {
1573 /* Check if firmware has attach buffer at command port and
1574 update just that in wr_bit_map. */
1575 card->mp_wr_bitmap |=
1576 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1577 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1578 adapter->cmd_sent = false;
1579 }
1580
1581 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1582 adapter->cmd_sent, adapter->data_sent);
1583 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1584 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1585 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1586 if (card->supports_sdio_new_mode) {
1587 bitmap |=
1588 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1589 bitmap |=
1590 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1591 }
1592 card->mp_rd_bitmap = bitmap;
1593 mwifiex_dbg(adapter, INTR,
1594 "int: UPLD: rd_bitmap=0x%x\n",
1595 card->mp_rd_bitmap);
1596
1597 while (true) {
1598 ret = mwifiex_get_rd_port(adapter, &port);
1599 if (ret) {
1600 mwifiex_dbg(adapter, INFO,
1601 "info: no more rd_port available\n");
1602 break;
1603 }
1604 len_reg_l = reg->rd_len_p0_l + (port << 1);
1605 len_reg_u = reg->rd_len_p0_u + (port << 1);
1606 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1607 rx_len |= (u16) card->mp_regs[len_reg_l];
1608 mwifiex_dbg(adapter, INFO,
1609 "info: RX: port=%d rx_len=%u\n",
1610 port, rx_len);
1611 rx_blocks =
1612 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1613 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1614 if (rx_len <= INTF_HEADER_LEN ||
1615 (card->mpa_rx.enabled &&
1616 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1617 card->mpa_rx.buf_size))) {
1618 mwifiex_dbg(adapter, ERROR,
1619 "invalid rx_len=%d\n",
1620 rx_len);
1621 return -1;
1622 }
1623
1624 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1625 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1626 rx_len);
1627
1628 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1629 port)) {
1630 mwifiex_dbg(adapter, ERROR,
1631 "card_to_host_mpa failed: int status=%#x\n",
1632 sdio_ireg);
1633 goto term_cmd;
1634 }
1635 }
1636 }
1637
1638 return 0;
1639
1640 term_cmd:
1641 /* terminate cmd */
1642 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1643 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
1644 else
1645 mwifiex_dbg(adapter, INFO,
1646 "info: CFG reg val = %d\n", cr);
1647
1648 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1649 mwifiex_dbg(adapter, ERROR,
1650 "write CFG reg failed\n");
1651 else
1652 mwifiex_dbg(adapter, INFO, "info: write success\n");
1653
1654 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1655 mwifiex_dbg(adapter, ERROR,
1656 "read CFG reg failed\n");
1657 else
1658 mwifiex_dbg(adapter, INFO,
1659 "info: CFG reg val =%x\n", cr);
1660
1661 return -1;
1662 }
1663
1664 /*
1665 * This function aggregates transmission buffers in driver and downloads
1666 * the aggregated packet to card.
1667 *
1668 * The individual packets are aggregated by copying into an aggregation
1669 * buffer and then downloaded to the card. Previous unsent packets in the
1670 * aggregation buffer are pre-copied first before new packets are added.
1671 * Aggregation is done till there is space left in the aggregation buffer,
1672 * or till new packets are available.
1673 *
1674 * The function will only download the packet to the card when aggregation
1675 * stops, otherwise it will just aggregate the packet in aggregation buffer
1676 * and return.
1677 */
1678 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1679 u8 *payload, u32 pkt_len, u32 port,
1680 u32 next_pkt_len)
1681 {
1682 struct sdio_mmc_card *card = adapter->card;
1683 int ret = 0;
1684 s32 f_send_aggr_buf = 0;
1685 s32 f_send_cur_buf = 0;
1686 s32 f_precopy_cur_buf = 0;
1687 s32 f_postcopy_cur_buf = 0;
1688 u32 mport;
1689 int index;
1690
1691 if (!card->mpa_tx.enabled ||
1692 (card->has_control_mask && (port == CTRL_PORT)) ||
1693 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1694 mwifiex_dbg(adapter, WARN,
1695 "info: %s: tx aggregation disabled\n",
1696 __func__);
1697
1698 f_send_cur_buf = 1;
1699 goto tx_curr_single;
1700 }
1701
1702 if (next_pkt_len) {
1703 /* More pkt in TX queue */
1704 mwifiex_dbg(adapter, INFO,
1705 "info: %s: more packets in queue.\n",
1706 __func__);
1707
1708 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1709 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1710 f_precopy_cur_buf = 1;
1711
1712 if (!(card->mp_wr_bitmap &
1713 (1 << card->curr_wr_port)) ||
1714 !MP_TX_AGGR_BUF_HAS_ROOM(
1715 card, pkt_len + next_pkt_len))
1716 f_send_aggr_buf = 1;
1717 } else {
1718 /* No room in Aggr buf, send it */
1719 f_send_aggr_buf = 1;
1720
1721 if (!(card->mp_wr_bitmap &
1722 (1 << card->curr_wr_port)))
1723 f_send_cur_buf = 1;
1724 else
1725 f_postcopy_cur_buf = 1;
1726 }
1727 } else {
1728 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1729 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1730 f_precopy_cur_buf = 1;
1731 else
1732 f_send_cur_buf = 1;
1733 }
1734 } else {
1735 /* Last pkt in TX queue */
1736 mwifiex_dbg(adapter, INFO,
1737 "info: %s: Last packet in Tx Queue.\n",
1738 __func__);
1739
1740 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1741 /* some packs in Aggr buf already */
1742 f_send_aggr_buf = 1;
1743
1744 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1745 f_precopy_cur_buf = 1;
1746 else
1747 /* No room in Aggr buf, send it */
1748 f_send_cur_buf = 1;
1749 } else {
1750 f_send_cur_buf = 1;
1751 }
1752 }
1753
1754 if (f_precopy_cur_buf) {
1755 mwifiex_dbg(adapter, DATA,
1756 "data: %s: precopy current buffer\n",
1757 __func__);
1758 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1759
1760 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1761 mp_tx_aggr_port_limit_reached(card))
1762 /* No more pkts allowed in Aggr buf, send it */
1763 f_send_aggr_buf = 1;
1764 }
1765
1766 if (f_send_aggr_buf) {
1767 mwifiex_dbg(adapter, DATA,
1768 "data: %s: send aggr buffer: %d %d\n",
1769 __func__, card->mpa_tx.start_port,
1770 card->mpa_tx.ports);
1771 if (card->supports_sdio_new_mode) {
1772 u32 port_count;
1773 int i;
1774
1775 for (i = 0, port_count = 0; i < card->max_ports; i++)
1776 if (card->mpa_tx.ports & BIT(i))
1777 port_count++;
1778
1779 /* Writing data from "start_port + 0" to "start_port +
1780 * port_count -1", so decrease the count by 1
1781 */
1782 port_count--;
1783 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1784 (port_count << 8)) + card->mpa_tx.start_port;
1785 } else {
1786 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1787 (card->mpa_tx.ports << 4)) +
1788 card->mpa_tx.start_port;
1789 }
1790
1791 if (card->mpa_tx.pkt_cnt == 1)
1792 mport = adapter->ioport + port;
1793
1794 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1795 card->mpa_tx.buf_len, mport);
1796
1797 /* Save the last multi port tx aggreagation info to debug log */
1798 index = adapter->dbg.last_sdio_mp_index;
1799 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
1800 adapter->dbg.last_sdio_mp_index = index;
1801 adapter->dbg.last_mp_wr_ports[index] = mport;
1802 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
1803 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
1804 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
1805
1806 MP_TX_AGGR_BUF_RESET(card);
1807 }
1808
1809 tx_curr_single:
1810 if (f_send_cur_buf) {
1811 mwifiex_dbg(adapter, DATA,
1812 "data: %s: send current buffer %d\n",
1813 __func__, port);
1814 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1815 adapter->ioport + port);
1816 }
1817
1818 if (f_postcopy_cur_buf) {
1819 mwifiex_dbg(adapter, DATA,
1820 "data: %s: postcopy current buffer\n",
1821 __func__);
1822 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1823 }
1824
1825 return ret;
1826 }
1827
1828 /*
1829 * This function downloads data from driver to card.
1830 *
1831 * Both commands and data packets are transferred to the card by this
1832 * function.
1833 *
1834 * This function adds the SDIO specific header to the front of the buffer
1835 * before transferring. The header contains the length of the packet and
1836 * the type. The firmware handles the packets based upon this set type.
1837 */
1838 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1839 u8 type, struct sk_buff *skb,
1840 struct mwifiex_tx_param *tx_param)
1841 {
1842 struct sdio_mmc_card *card = adapter->card;
1843 int ret;
1844 u32 buf_block_len;
1845 u32 blk_size;
1846 u32 port = CTRL_PORT;
1847 u8 *payload = (u8 *)skb->data;
1848 u32 pkt_len = skb->len;
1849
1850 /* Allocate buffer and copy payload */
1851 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1852 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1853 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1854 *(__le16 *)&payload[2] = cpu_to_le16(type);
1855
1856 /*
1857 * This is SDIO specific header
1858 * u16 length,
1859 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1860 * MWIFIEX_TYPE_EVENT = 3)
1861 */
1862 if (type == MWIFIEX_TYPE_DATA) {
1863 ret = mwifiex_get_wr_port_data(adapter, &port);
1864 if (ret) {
1865 mwifiex_dbg(adapter, ERROR,
1866 "%s: no wr_port available\n",
1867 __func__);
1868 return ret;
1869 }
1870 } else {
1871 adapter->cmd_sent = true;
1872 /* Type must be MWIFIEX_TYPE_CMD */
1873
1874 if (pkt_len <= INTF_HEADER_LEN ||
1875 pkt_len > MWIFIEX_UPLD_SIZE)
1876 mwifiex_dbg(adapter, ERROR,
1877 "%s: payload=%p, nb=%d\n",
1878 __func__, payload, pkt_len);
1879
1880 if (card->supports_sdio_new_mode)
1881 port = CMD_PORT_SLCT;
1882 }
1883
1884 /* Transfer data to card */
1885 pkt_len = buf_block_len * blk_size;
1886
1887 if (tx_param)
1888 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1889 port, tx_param->next_pkt_len
1890 );
1891 else
1892 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1893 port, 0);
1894
1895 if (ret) {
1896 if (type == MWIFIEX_TYPE_CMD)
1897 adapter->cmd_sent = false;
1898 if (type == MWIFIEX_TYPE_DATA) {
1899 adapter->data_sent = false;
1900 /* restore curr_wr_port in error cases */
1901 card->curr_wr_port = port;
1902 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1903 }
1904 } else {
1905 if (type == MWIFIEX_TYPE_DATA) {
1906 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1907 adapter->data_sent = true;
1908 else
1909 adapter->data_sent = false;
1910 }
1911 }
1912
1913 return ret;
1914 }
1915
1916 /*
1917 * This function allocates the MPA Tx and Rx buffers.
1918 */
1919 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1920 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1921 {
1922 struct sdio_mmc_card *card = adapter->card;
1923 u32 rx_buf_size;
1924 int ret = 0;
1925
1926 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1927 if (!card->mpa_tx.buf) {
1928 ret = -1;
1929 goto error;
1930 }
1931
1932 card->mpa_tx.buf_size = mpa_tx_buf_size;
1933
1934 rx_buf_size = max_t(u32, mpa_rx_buf_size,
1935 (u32)SDIO_MAX_AGGR_BUF_SIZE);
1936 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
1937 if (!card->mpa_rx.buf) {
1938 ret = -1;
1939 goto error;
1940 }
1941
1942 card->mpa_rx.buf_size = rx_buf_size;
1943
1944 error:
1945 if (ret) {
1946 kfree(card->mpa_tx.buf);
1947 kfree(card->mpa_rx.buf);
1948 card->mpa_tx.buf_size = 0;
1949 card->mpa_rx.buf_size = 0;
1950 }
1951
1952 return ret;
1953 }
1954
1955 /*
1956 * This function unregisters the SDIO device.
1957 *
1958 * The SDIO IRQ is released, the function is disabled and driver
1959 * data is set to null.
1960 */
1961 static void
1962 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1963 {
1964 struct sdio_mmc_card *card = adapter->card;
1965
1966 if (adapter->card) {
1967 sdio_claim_host(card->func);
1968 sdio_disable_func(card->func);
1969 sdio_release_host(card->func);
1970 }
1971 }
1972
1973 /*
1974 * This function registers the SDIO device.
1975 *
1976 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1977 */
1978 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1979 {
1980 int ret;
1981 struct sdio_mmc_card *card = adapter->card;
1982 struct sdio_func *func = card->func;
1983
1984 /* save adapter pointer in card */
1985 card->adapter = adapter;
1986 adapter->tx_buf_size = card->tx_buf_size;
1987
1988 sdio_claim_host(func);
1989
1990 /* Set block size */
1991 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1992 sdio_release_host(func);
1993 if (ret) {
1994 mwifiex_dbg(adapter, ERROR,
1995 "cannot set SDIO block size\n");
1996 return ret;
1997 }
1998
1999
2000 adapter->dev = &func->dev;
2001
2002 strcpy(adapter->fw_name, card->firmware);
2003 if (card->fw_dump_enh) {
2004 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2005 adapter->num_mem_types = 1;
2006 } else {
2007 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2008 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2009 }
2010
2011 return 0;
2012 }
2013
2014 /*
2015 * This function initializes the SDIO driver.
2016 *
2017 * The following initializations steps are followed -
2018 * - Read the Host interrupt status register to acknowledge
2019 * the first interrupt got from bootloader
2020 * - Disable host interrupt mask register
2021 * - Get SDIO port
2022 * - Initialize SDIO variables in card
2023 * - Allocate MP registers
2024 * - Allocate MPA Tx and Rx buffers
2025 */
2026 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2027 {
2028 struct sdio_mmc_card *card = adapter->card;
2029 const struct mwifiex_sdio_card_reg *reg = card->reg;
2030 int ret;
2031 u8 sdio_ireg;
2032
2033 sdio_set_drvdata(card->func, card);
2034
2035 /*
2036 * Read the host_int_status_reg for ACK the first interrupt got
2037 * from the bootloader. If we don't do this we get a interrupt
2038 * as soon as we register the irq.
2039 */
2040 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2041
2042 /* Get SDIO ioport */
2043 mwifiex_init_sdio_ioport(adapter);
2044
2045 /* Initialize SDIO variables in card */
2046 card->mp_rd_bitmap = 0;
2047 card->mp_wr_bitmap = 0;
2048 card->curr_rd_port = reg->start_rd_port;
2049 card->curr_wr_port = reg->start_wr_port;
2050
2051 card->mp_data_port_mask = reg->data_port_mask;
2052
2053 card->mpa_tx.buf_len = 0;
2054 card->mpa_tx.pkt_cnt = 0;
2055 card->mpa_tx.start_port = 0;
2056
2057 card->mpa_tx.enabled = 1;
2058 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2059
2060 card->mpa_rx.buf_len = 0;
2061 card->mpa_rx.pkt_cnt = 0;
2062 card->mpa_rx.start_port = 0;
2063
2064 card->mpa_rx.enabled = 1;
2065 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2066
2067 /* Allocate buffers for SDIO MP-A */
2068 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2069 if (!card->mp_regs)
2070 return -ENOMEM;
2071
2072 /* Allocate skb pointer buffers */
2073 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
2074 card->mp_agg_pkt_limit, GFP_KERNEL);
2075 if (!card->mpa_rx.skb_arr) {
2076 kfree(card->mp_regs);
2077 return -ENOMEM;
2078 }
2079
2080 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
2081 card->mp_agg_pkt_limit, GFP_KERNEL);
2082 if (!card->mpa_rx.len_arr) {
2083 kfree(card->mp_regs);
2084 kfree(card->mpa_rx.skb_arr);
2085 return -ENOMEM;
2086 }
2087
2088 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2089 card->mp_tx_agg_buf_size,
2090 card->mp_rx_agg_buf_size);
2091
2092 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2093 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2094 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2095 /* Disable rx single port aggregation */
2096 adapter->host_disable_sdio_rx_aggr = true;
2097
2098 ret = mwifiex_alloc_sdio_mpa_buffers
2099 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2100 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2101 if (ret) {
2102 /* Disable multi port aggregation */
2103 card->mpa_tx.enabled = 0;
2104 card->mpa_rx.enabled = 0;
2105 }
2106 }
2107
2108 adapter->auto_tdls = card->can_auto_tdls;
2109 adapter->ext_scan = card->can_ext_scan;
2110 return 0;
2111 }
2112
2113 /*
2114 * This function resets the MPA Tx and Rx buffers.
2115 */
2116 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2117 {
2118 struct sdio_mmc_card *card = adapter->card;
2119
2120 MP_TX_AGGR_BUF_RESET(card);
2121 MP_RX_AGGR_BUF_RESET(card);
2122 }
2123
2124 /*
2125 * This function cleans up the allocated card buffers.
2126 *
2127 * The following are freed by this function -
2128 * - MP registers
2129 * - MPA Tx buffer
2130 * - MPA Rx buffer
2131 */
2132 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2133 {
2134 struct sdio_mmc_card *card = adapter->card;
2135
2136 kfree(card->mp_regs);
2137 kfree(card->mpa_rx.skb_arr);
2138 kfree(card->mpa_rx.len_arr);
2139 kfree(card->mpa_tx.buf);
2140 kfree(card->mpa_rx.buf);
2141 sdio_set_drvdata(card->func, NULL);
2142 kfree(card);
2143 }
2144
2145 /*
2146 * This function updates the MP end port in card.
2147 */
2148 static void
2149 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2150 {
2151 struct sdio_mmc_card *card = adapter->card;
2152 const struct mwifiex_sdio_card_reg *reg = card->reg;
2153 int i;
2154
2155 card->mp_end_port = port;
2156
2157 card->mp_data_port_mask = reg->data_port_mask;
2158
2159 if (reg->start_wr_port) {
2160 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2161 card->mp_data_port_mask &=
2162 ~(1 << (card->max_ports - i));
2163 }
2164
2165 card->curr_wr_port = reg->start_wr_port;
2166
2167 mwifiex_dbg(adapter, CMD,
2168 "cmd: mp_end_port %d, data port mask 0x%x\n",
2169 port, card->mp_data_port_mask);
2170 }
2171
2172 static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
2173 {
2174 struct sdio_func *func = card->func;
2175 const struct sdio_device_id *device_id = card->device_id;
2176
2177 /* TODO mmc_hw_reset does not require destroying and re-probing the
2178 * whole adapter. Hence there was no need to for this rube-goldberg
2179 * design to reload the fw from an external workqueue. If we don't
2180 * destroy the adapter we could reload the fw from
2181 * mwifiex_main_work_queue directly.
2182 * The real difficulty with fw reset is to restore all the user
2183 * settings applied through ioctl. By destroying and recreating the
2184 * adapter, we take the easy way out, since we rely on user space to
2185 * restore them. We assume that user space will treat the new
2186 * incarnation of the adapter(interfaces) as if they had been just
2187 * discovered and initializes them from scratch.
2188 */
2189
2190 mwifiex_sdio_remove(func);
2191
2192 /* power cycle the adapter */
2193 sdio_claim_host(func);
2194 mmc_hw_reset(func->card->host);
2195 sdio_release_host(func);
2196
2197 mwifiex_sdio_probe(func, device_id);
2198 }
2199
2200 static struct mwifiex_adapter *save_adapter;
2201 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2202 {
2203 struct sdio_mmc_card *card = adapter->card;
2204
2205 /* TODO card pointer is unprotected. If the adapter is removed
2206 * physically, sdio core might trigger mwifiex_sdio_remove, before this
2207 * workqueue is run, which will destroy the adapter struct. When this
2208 * workqueue eventually exceutes it will dereference an invalid adapter
2209 * pointer
2210 */
2211 mwifiex_recreate_adapter(card);
2212 }
2213
2214 /* This function read/write firmware */
2215 static enum
2216 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2217 u8 doneflag)
2218 {
2219 struct sdio_mmc_card *card = adapter->card;
2220 int ret, tries;
2221 u8 ctrl_data = 0;
2222
2223 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2224 card->reg->fw_dump_ctrl, &ret);
2225 if (ret) {
2226 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2227 return RDWR_STATUS_FAILURE;
2228 }
2229 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2230 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2231 &ret);
2232 if (ret) {
2233 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2234 return RDWR_STATUS_FAILURE;
2235 }
2236 if (ctrl_data == FW_DUMP_DONE)
2237 break;
2238 if (doneflag && ctrl_data == doneflag)
2239 return RDWR_STATUS_DONE;
2240 if (ctrl_data != card->reg->fw_dump_host_ready) {
2241 mwifiex_dbg(adapter, WARN,
2242 "The ctrl reg was changed, re-try again\n");
2243 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2244 card->reg->fw_dump_ctrl, &ret);
2245 if (ret) {
2246 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2247 return RDWR_STATUS_FAILURE;
2248 }
2249 }
2250 usleep_range(100, 200);
2251 }
2252 if (ctrl_data == card->reg->fw_dump_host_ready) {
2253 mwifiex_dbg(adapter, ERROR,
2254 "Fail to pull ctrl_data\n");
2255 return RDWR_STATUS_FAILURE;
2256 }
2257
2258 return RDWR_STATUS_SUCCESS;
2259 }
2260
2261 /* This function dump firmware memory to file */
2262 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2263 {
2264 struct sdio_mmc_card *card = adapter->card;
2265 int ret = 0;
2266 unsigned int reg, reg_start, reg_end;
2267 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2268 enum rdwr_status stat;
2269 u32 memory_size;
2270
2271 if (!card->can_dump_fw)
2272 return;
2273
2274 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2275 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2276
2277 if (entry->mem_ptr) {
2278 vfree(entry->mem_ptr);
2279 entry->mem_ptr = NULL;
2280 }
2281 entry->mem_size = 0;
2282 }
2283
2284 mwifiex_pm_wakeup_card(adapter);
2285 sdio_claim_host(card->func);
2286
2287 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2288
2289 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2290 if (stat == RDWR_STATUS_FAILURE)
2291 goto done;
2292
2293 reg = card->reg->fw_dump_start;
2294 /* Read the number of the memories which will dump */
2295 dump_num = sdio_readb(card->func, reg, &ret);
2296 if (ret) {
2297 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2298 goto done;
2299 }
2300
2301 /* Read the length of every memory which will dump */
2302 for (idx = 0; idx < dump_num; idx++) {
2303 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2304
2305 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2306 if (stat == RDWR_STATUS_FAILURE)
2307 goto done;
2308
2309 memory_size = 0;
2310 reg = card->reg->fw_dump_start;
2311 for (i = 0; i < 4; i++) {
2312 read_reg = sdio_readb(card->func, reg, &ret);
2313 if (ret) {
2314 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2315 goto done;
2316 }
2317 memory_size |= (read_reg << i*8);
2318 reg++;
2319 }
2320
2321 if (memory_size == 0) {
2322 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2323 ret = mwifiex_write_reg(adapter,
2324 card->reg->fw_dump_ctrl,
2325 FW_DUMP_READ_DONE);
2326 if (ret) {
2327 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2328 return;
2329 }
2330 break;
2331 }
2332
2333 mwifiex_dbg(adapter, DUMP,
2334 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2335 entry->mem_ptr = vmalloc(memory_size + 1);
2336 entry->mem_size = memory_size;
2337 if (!entry->mem_ptr) {
2338 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2339 entry->mem_name);
2340 goto done;
2341 }
2342 dbg_ptr = entry->mem_ptr;
2343 end_ptr = dbg_ptr + memory_size;
2344
2345 doneflag = entry->done_flag;
2346 mwifiex_dbg(adapter, DUMP,
2347 "Start %s output, please wait...\n",
2348 entry->mem_name);
2349
2350 do {
2351 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2352 if (stat == RDWR_STATUS_FAILURE)
2353 goto done;
2354
2355 reg_start = card->reg->fw_dump_start;
2356 reg_end = card->reg->fw_dump_end;
2357 for (reg = reg_start; reg <= reg_end; reg++) {
2358 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2359 if (ret) {
2360 mwifiex_dbg(adapter, ERROR,
2361 "SDIO read err\n");
2362 goto done;
2363 }
2364 if (dbg_ptr < end_ptr)
2365 dbg_ptr++;
2366 else
2367 mwifiex_dbg(adapter, ERROR,
2368 "Allocated buf not enough\n");
2369 }
2370
2371 if (stat != RDWR_STATUS_DONE)
2372 continue;
2373
2374 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2375 entry->mem_name, dbg_ptr - entry->mem_ptr);
2376 break;
2377 } while (1);
2378 }
2379 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2380
2381 done:
2382 sdio_release_host(card->func);
2383 }
2384
2385 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2386 {
2387 struct sdio_mmc_card *card = adapter->card;
2388 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2389 unsigned int reg, reg_start, reg_end;
2390 u8 start_flag = 0, done_flag = 0;
2391 u8 *dbg_ptr, *end_ptr;
2392 enum rdwr_status stat;
2393 int ret = -1, tries;
2394
2395 if (!card->fw_dump_enh)
2396 return;
2397
2398 if (entry->mem_ptr) {
2399 vfree(entry->mem_ptr);
2400 entry->mem_ptr = NULL;
2401 }
2402 entry->mem_size = 0;
2403
2404 mwifiex_pm_wakeup_card(adapter);
2405 sdio_claim_host(card->func);
2406
2407 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2408
2409 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2410 if (stat == RDWR_STATUS_FAILURE)
2411 goto done;
2412
2413 reg_start = card->reg->fw_dump_start;
2414 reg_end = card->reg->fw_dump_end;
2415 for (reg = reg_start; reg <= reg_end; reg++) {
2416 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2417 start_flag = sdio_readb(card->func, reg, &ret);
2418 if (ret) {
2419 mwifiex_dbg(adapter, ERROR,
2420 "SDIO read err\n");
2421 goto done;
2422 }
2423 if (start_flag == 0)
2424 break;
2425 if (tries == MAX_POLL_TRIES) {
2426 mwifiex_dbg(adapter, ERROR,
2427 "FW not ready to dump\n");
2428 ret = -1;
2429 goto done;
2430 }
2431 }
2432 usleep_range(100, 200);
2433 }
2434
2435 entry->mem_ptr = vmalloc(0xf0000 + 1);
2436 if (!entry->mem_ptr) {
2437 ret = -1;
2438 goto done;
2439 }
2440 dbg_ptr = entry->mem_ptr;
2441 entry->mem_size = 0xf0000;
2442 end_ptr = dbg_ptr + entry->mem_size;
2443
2444 done_flag = entry->done_flag;
2445 mwifiex_dbg(adapter, DUMP,
2446 "Start %s output, please wait...\n", entry->mem_name);
2447
2448 while (true) {
2449 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2450 if (stat == RDWR_STATUS_FAILURE)
2451 goto done;
2452 for (reg = reg_start; reg <= reg_end; reg++) {
2453 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2454 if (ret) {
2455 mwifiex_dbg(adapter, ERROR,
2456 "SDIO read err\n");
2457 goto done;
2458 }
2459 dbg_ptr++;
2460 if (dbg_ptr >= end_ptr) {
2461 u8 *tmp_ptr;
2462
2463 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2464 if (!tmp_ptr)
2465 goto done;
2466
2467 memcpy(tmp_ptr, entry->mem_ptr,
2468 entry->mem_size);
2469 vfree(entry->mem_ptr);
2470 entry->mem_ptr = tmp_ptr;
2471 tmp_ptr = NULL;
2472 dbg_ptr = entry->mem_ptr + entry->mem_size;
2473 entry->mem_size += 0x4000;
2474 end_ptr = entry->mem_ptr + entry->mem_size;
2475 }
2476 }
2477 if (stat == RDWR_STATUS_DONE) {
2478 entry->mem_size = dbg_ptr - entry->mem_ptr;
2479 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2480 entry->mem_name, entry->mem_size);
2481 ret = 0;
2482 break;
2483 }
2484 }
2485 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2486
2487 done:
2488 if (ret) {
2489 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2490 if (entry->mem_ptr) {
2491 vfree(entry->mem_ptr);
2492 entry->mem_ptr = NULL;
2493 }
2494 entry->mem_size = 0;
2495 }
2496 sdio_release_host(card->func);
2497 }
2498
2499 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2500 {
2501 struct sdio_mmc_card *card = adapter->card;
2502
2503 mwifiex_drv_info_dump(adapter);
2504 if (card->fw_dump_enh)
2505 mwifiex_sdio_generic_fw_dump(adapter);
2506 else
2507 mwifiex_sdio_fw_dump(adapter);
2508 mwifiex_upload_device_dump(adapter);
2509 }
2510
2511 static void mwifiex_sdio_work(struct work_struct *work)
2512 {
2513 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2514 &iface_work_flags))
2515 mwifiex_sdio_device_dump_work(save_adapter);
2516 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2517 &iface_work_flags))
2518 mwifiex_sdio_card_reset_work(save_adapter);
2519 }
2520
2521 static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
2522 /* This function resets the card */
2523 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2524 {
2525 save_adapter = adapter;
2526 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags))
2527 return;
2528
2529 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
2530
2531 schedule_work(&sdio_work);
2532 }
2533
2534 /* This function dumps FW information */
2535 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
2536 {
2537 save_adapter = adapter;
2538 if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags))
2539 return;
2540
2541 set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
2542 schedule_work(&sdio_work);
2543 }
2544
2545 /* Function to dump SDIO function registers and SDIO scratch registers in case
2546 * of FW crash
2547 */
2548 static int
2549 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2550 {
2551 char *p = drv_buf;
2552 struct sdio_mmc_card *cardp = adapter->card;
2553 int ret = 0;
2554 u8 count, func, data, index = 0, size = 0;
2555 u8 reg, reg_start, reg_end;
2556 char buf[256], *ptr;
2557
2558 if (!p)
2559 return 0;
2560
2561 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
2562
2563 mwifiex_pm_wakeup_card(adapter);
2564
2565 sdio_claim_host(cardp->func);
2566
2567 for (count = 0; count < 5; count++) {
2568 memset(buf, 0, sizeof(buf));
2569 ptr = buf;
2570
2571 switch (count) {
2572 case 0:
2573 /* Read the registers of SDIO function0 */
2574 func = count;
2575 reg_start = 0;
2576 reg_end = 9;
2577 break;
2578 case 1:
2579 /* Read the registers of SDIO function1 */
2580 func = count;
2581 reg_start = cardp->reg->func1_dump_reg_start;
2582 reg_end = cardp->reg->func1_dump_reg_end;
2583 break;
2584 case 2:
2585 index = 0;
2586 func = 1;
2587 reg_start = cardp->reg->func1_spec_reg_table[index++];
2588 size = cardp->reg->func1_spec_reg_num;
2589 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2590 break;
2591 default:
2592 /* Read the scratch registers of SDIO function1 */
2593 if (count == 4)
2594 mdelay(100);
2595 func = 1;
2596 reg_start = cardp->reg->func1_scratch_reg;
2597 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2598 }
2599
2600 if (count != 2)
2601 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2602 func, reg_start, reg_end);
2603 else
2604 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2605
2606 for (reg = reg_start; reg <= reg_end;) {
2607 if (func == 0)
2608 data = sdio_f0_readb(cardp->func, reg, &ret);
2609 else
2610 data = sdio_readb(cardp->func, reg, &ret);
2611
2612 if (count == 2)
2613 ptr += sprintf(ptr, "(%#x) ", reg);
2614 if (!ret) {
2615 ptr += sprintf(ptr, "%02x ", data);
2616 } else {
2617 ptr += sprintf(ptr, "ERR");
2618 break;
2619 }
2620
2621 if (count == 2 && reg < reg_end)
2622 reg = cardp->reg->func1_spec_reg_table[index++];
2623 else
2624 reg++;
2625 }
2626
2627 mwifiex_dbg(adapter, MSG, "%s\n", buf);
2628 p += sprintf(p, "%s\n", buf);
2629 }
2630
2631 sdio_release_host(cardp->func);
2632
2633 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
2634
2635 return p - drv_buf;
2636 }
2637
2638 static struct mwifiex_if_ops sdio_ops = {
2639 .init_if = mwifiex_init_sdio,
2640 .cleanup_if = mwifiex_cleanup_sdio,
2641 .check_fw_status = mwifiex_check_fw_status,
2642 .check_winner_status = mwifiex_check_winner_status,
2643 .prog_fw = mwifiex_prog_fw_w_helper,
2644 .register_dev = mwifiex_register_dev,
2645 .unregister_dev = mwifiex_unregister_dev,
2646 .enable_int = mwifiex_sdio_enable_host_int,
2647 .disable_int = mwifiex_sdio_disable_host_int,
2648 .process_int_status = mwifiex_process_int_status,
2649 .host_to_card = mwifiex_sdio_host_to_card,
2650 .wakeup = mwifiex_pm_wakeup_card,
2651 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2652
2653 /* SDIO specific */
2654 .update_mp_end_port = mwifiex_update_mp_end_port,
2655 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2656 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2657 .event_complete = mwifiex_sdio_event_complete,
2658 .card_reset = mwifiex_sdio_card_reset,
2659 .reg_dump = mwifiex_sdio_reg_dump,
2660 .device_dump = mwifiex_sdio_device_dump,
2661 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2662 };
2663
2664 /*
2665 * This function initializes the SDIO driver.
2666 *
2667 * This initiates the semaphore and registers the device with
2668 * SDIO bus.
2669 */
2670 static int
2671 mwifiex_sdio_init_module(void)
2672 {
2673 sema_init(&add_remove_card_sem, 1);
2674
2675 /* Clear the flag in case user removes the card. */
2676 user_rmmod = 0;
2677
2678 return sdio_register_driver(&mwifiex_sdio);
2679 }
2680
2681 /*
2682 * This function cleans up the SDIO driver.
2683 *
2684 * The following major steps are followed for cleanup -
2685 * - Resume the device if its suspended
2686 * - Disconnect the device if connected
2687 * - Shutdown the firmware
2688 * - Unregister the device from SDIO bus.
2689 */
2690 static void
2691 mwifiex_sdio_cleanup_module(void)
2692 {
2693 if (!down_interruptible(&add_remove_card_sem))
2694 up(&add_remove_card_sem);
2695
2696 /* Set the flag as user is removing this module. */
2697 user_rmmod = 1;
2698 cancel_work_sync(&sdio_work);
2699
2700 sdio_unregister_driver(&mwifiex_sdio);
2701 }
2702
2703 module_init(mwifiex_sdio_init_module);
2704 module_exit(mwifiex_sdio_cleanup_module);
2705
2706 MODULE_AUTHOR("Marvell International Ltd.");
2707 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2708 MODULE_VERSION(SDIO_VERSION);
2709 MODULE_LICENSE("GPL v2");
2710 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2711 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2712 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2713 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
2714 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
2715 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
Linux kernel - Deliverables
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