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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
[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 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len,
1127 GFP_KERNEL | GFP_DMA);
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 GFP_DMA);
1378 if (!skb_deaggr) {
1379 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1380 "drop pkt len=%d type=%d\n",
1381 pkt_len, pkt_type);
1382 curr_ptr += len_arr[pind];
1383 continue;
1384 }
1385
1386 skb_put(skb_deaggr, len_arr[pind]);
1387
1388 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1389 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1390 adapter->sdio_rx_aggr_enable)) &&
1391 (pkt_len <= len_arr[pind])) {
1392
1393 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1394
1395 skb_trim(skb_deaggr, pkt_len);
1396
1397 /* Process de-aggr packet */
1398 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1399 pkt_type);
1400 } else {
1401 mwifiex_dbg(adapter, ERROR,
1402 "drop wrong aggr pkt:\t"
1403 "sdio_single_port_rx_aggr=%d\t"
1404 "type=%d len=%d max_len=%d\n",
1405 adapter->sdio_rx_aggr_enable,
1406 pkt_type, pkt_len, len_arr[pind]);
1407 dev_kfree_skb_any(skb_deaggr);
1408 }
1409 curr_ptr += len_arr[pind];
1410 }
1411 MP_RX_AGGR_BUF_RESET(card);
1412 }
1413
1414 rx_curr_single:
1415 if (f_do_rx_cur) {
1416 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1417 port, rx_len);
1418
1419 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1420 if (!skb) {
1421 mwifiex_dbg(adapter, ERROR,
1422 "single skb allocated fail,\t"
1423 "drop pkt port=%d len=%d\n", port, rx_len);
1424 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1425 card->mpa_rx.buf, rx_len,
1426 adapter->ioport + port))
1427 goto error;
1428 return 0;
1429 }
1430
1431 skb_put(skb, rx_len);
1432
1433 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1434 skb->data, skb->len,
1435 adapter->ioport + port))
1436 goto error;
1437 if (!adapter->sdio_rx_aggr_enable &&
1438 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1439 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1440 "current SDIO RX Aggr not enabled\n",
1441 pkt_type);
1442 dev_kfree_skb_any(skb);
1443 return 0;
1444 }
1445
1446 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1447 }
1448 if (f_post_aggr_cur) {
1449 mwifiex_dbg(adapter, INFO,
1450 "info: current packet aggregation\n");
1451 /* Curr pkt can be aggregated */
1452 mp_rx_aggr_setup(card, rx_len, port);
1453 }
1454
1455 return 0;
1456 error:
1457 if (MP_RX_AGGR_IN_PROGRESS(card))
1458 MP_RX_AGGR_BUF_RESET(card);
1459
1460 if (f_do_rx_cur && skb)
1461 /* Single transfer pending. Free curr buff also */
1462 dev_kfree_skb_any(skb);
1463
1464 return -1;
1465 }
1466
1467 /*
1468 * This function checks the current interrupt status.
1469 *
1470 * The following interrupts are checked and handled by this function -
1471 * - Data sent
1472 * - Command sent
1473 * - Packets received
1474 *
1475 * Since the firmware does not generate download ready interrupt if the
1476 * port updated is command port only, command sent interrupt checking
1477 * should be done manually, and for every SDIO interrupt.
1478 *
1479 * In case of Rx packets received, the packets are uploaded from card to
1480 * host and processed accordingly.
1481 */
1482 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1483 {
1484 struct sdio_mmc_card *card = adapter->card;
1485 const struct mwifiex_sdio_card_reg *reg = card->reg;
1486 int ret = 0;
1487 u8 sdio_ireg;
1488 struct sk_buff *skb;
1489 u8 port = CTRL_PORT;
1490 u32 len_reg_l, len_reg_u;
1491 u32 rx_blocks;
1492 u16 rx_len;
1493 unsigned long flags;
1494 u32 bitmap;
1495 u8 cr;
1496
1497 spin_lock_irqsave(&adapter->int_lock, flags);
1498 sdio_ireg = adapter->int_status;
1499 adapter->int_status = 0;
1500 spin_unlock_irqrestore(&adapter->int_lock, flags);
1501
1502 if (!sdio_ireg)
1503 return ret;
1504
1505 /* Following interrupt is only for SDIO new mode */
1506 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1507 adapter->cmd_sent = false;
1508
1509 /* Following interrupt is only for SDIO new mode */
1510 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1511 u32 pkt_type;
1512
1513 /* read the len of control packet */
1514 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1515 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1516 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1517 if (rx_len <= INTF_HEADER_LEN ||
1518 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1519 MWIFIEX_RX_DATA_BUF_SIZE)
1520 return -1;
1521 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1522 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1523
1524 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1525 if (!skb)
1526 return -1;
1527
1528 skb_put(skb, rx_len);
1529
1530 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1531 skb->len, adapter->ioport |
1532 CMD_PORT_SLCT)) {
1533 mwifiex_dbg(adapter, ERROR,
1534 "%s: failed to card_to_host", __func__);
1535 dev_kfree_skb_any(skb);
1536 goto term_cmd;
1537 }
1538
1539 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1540 (pkt_type != MWIFIEX_TYPE_EVENT))
1541 mwifiex_dbg(adapter, ERROR,
1542 "%s:Received wrong packet on cmd port",
1543 __func__);
1544
1545 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1546 }
1547
1548 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1549 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1550 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1551 if (card->supports_sdio_new_mode) {
1552 bitmap |=
1553 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1554 bitmap |=
1555 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1556 }
1557 card->mp_wr_bitmap = bitmap;
1558
1559 mwifiex_dbg(adapter, INTR,
1560 "int: DNLD: wr_bitmap=0x%x\n",
1561 card->mp_wr_bitmap);
1562 if (adapter->data_sent &&
1563 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1564 mwifiex_dbg(adapter, INTR,
1565 "info: <--- Tx DONE Interrupt --->\n");
1566 adapter->data_sent = false;
1567 }
1568 }
1569
1570 /* As firmware will not generate download ready interrupt if the port
1571 updated is command port only, cmd_sent should be done for any SDIO
1572 interrupt. */
1573 if (card->has_control_mask && adapter->cmd_sent) {
1574 /* Check if firmware has attach buffer at command port and
1575 update just that in wr_bit_map. */
1576 card->mp_wr_bitmap |=
1577 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1578 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1579 adapter->cmd_sent = false;
1580 }
1581
1582 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1583 adapter->cmd_sent, adapter->data_sent);
1584 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1585 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1586 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1587 if (card->supports_sdio_new_mode) {
1588 bitmap |=
1589 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1590 bitmap |=
1591 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1592 }
1593 card->mp_rd_bitmap = bitmap;
1594 mwifiex_dbg(adapter, INTR,
1595 "int: UPLD: rd_bitmap=0x%x\n",
1596 card->mp_rd_bitmap);
1597
1598 while (true) {
1599 ret = mwifiex_get_rd_port(adapter, &port);
1600 if (ret) {
1601 mwifiex_dbg(adapter, INFO,
1602 "info: no more rd_port available\n");
1603 break;
1604 }
1605 len_reg_l = reg->rd_len_p0_l + (port << 1);
1606 len_reg_u = reg->rd_len_p0_u + (port << 1);
1607 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1608 rx_len |= (u16) card->mp_regs[len_reg_l];
1609 mwifiex_dbg(adapter, INFO,
1610 "info: RX: port=%d rx_len=%u\n",
1611 port, rx_len);
1612 rx_blocks =
1613 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1614 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1615 if (rx_len <= INTF_HEADER_LEN ||
1616 (card->mpa_rx.enabled &&
1617 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1618 card->mpa_rx.buf_size))) {
1619 mwifiex_dbg(adapter, ERROR,
1620 "invalid rx_len=%d\n",
1621 rx_len);
1622 return -1;
1623 }
1624
1625 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1626 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1627 rx_len);
1628
1629 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1630 port)) {
1631 mwifiex_dbg(adapter, ERROR,
1632 "card_to_host_mpa failed: int status=%#x\n",
1633 sdio_ireg);
1634 goto term_cmd;
1635 }
1636 }
1637 }
1638
1639 return 0;
1640
1641 term_cmd:
1642 /* terminate cmd */
1643 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1644 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
1645 else
1646 mwifiex_dbg(adapter, INFO,
1647 "info: CFG reg val = %d\n", cr);
1648
1649 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1650 mwifiex_dbg(adapter, ERROR,
1651 "write CFG reg failed\n");
1652 else
1653 mwifiex_dbg(adapter, INFO, "info: write success\n");
1654
1655 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1656 mwifiex_dbg(adapter, ERROR,
1657 "read CFG reg failed\n");
1658 else
1659 mwifiex_dbg(adapter, INFO,
1660 "info: CFG reg val =%x\n", cr);
1661
1662 return -1;
1663 }
1664
1665 /*
1666 * This function aggregates transmission buffers in driver and downloads
1667 * the aggregated packet to card.
1668 *
1669 * The individual packets are aggregated by copying into an aggregation
1670 * buffer and then downloaded to the card. Previous unsent packets in the
1671 * aggregation buffer are pre-copied first before new packets are added.
1672 * Aggregation is done till there is space left in the aggregation buffer,
1673 * or till new packets are available.
1674 *
1675 * The function will only download the packet to the card when aggregation
1676 * stops, otherwise it will just aggregate the packet in aggregation buffer
1677 * and return.
1678 */
1679 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1680 u8 *payload, u32 pkt_len, u32 port,
1681 u32 next_pkt_len)
1682 {
1683 struct sdio_mmc_card *card = adapter->card;
1684 int ret = 0;
1685 s32 f_send_aggr_buf = 0;
1686 s32 f_send_cur_buf = 0;
1687 s32 f_precopy_cur_buf = 0;
1688 s32 f_postcopy_cur_buf = 0;
1689 u32 mport;
1690 int index;
1691
1692 if (!card->mpa_tx.enabled ||
1693 (card->has_control_mask && (port == CTRL_PORT)) ||
1694 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1695 mwifiex_dbg(adapter, WARN,
1696 "info: %s: tx aggregation disabled\n",
1697 __func__);
1698
1699 f_send_cur_buf = 1;
1700 goto tx_curr_single;
1701 }
1702
1703 if (next_pkt_len) {
1704 /* More pkt in TX queue */
1705 mwifiex_dbg(adapter, INFO,
1706 "info: %s: more packets in queue.\n",
1707 __func__);
1708
1709 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1710 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1711 f_precopy_cur_buf = 1;
1712
1713 if (!(card->mp_wr_bitmap &
1714 (1 << card->curr_wr_port)) ||
1715 !MP_TX_AGGR_BUF_HAS_ROOM(
1716 card, pkt_len + next_pkt_len))
1717 f_send_aggr_buf = 1;
1718 } else {
1719 /* No room in Aggr buf, send it */
1720 f_send_aggr_buf = 1;
1721
1722 if (!(card->mp_wr_bitmap &
1723 (1 << card->curr_wr_port)))
1724 f_send_cur_buf = 1;
1725 else
1726 f_postcopy_cur_buf = 1;
1727 }
1728 } else {
1729 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1730 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1731 f_precopy_cur_buf = 1;
1732 else
1733 f_send_cur_buf = 1;
1734 }
1735 } else {
1736 /* Last pkt in TX queue */
1737 mwifiex_dbg(adapter, INFO,
1738 "info: %s: Last packet in Tx Queue.\n",
1739 __func__);
1740
1741 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1742 /* some packs in Aggr buf already */
1743 f_send_aggr_buf = 1;
1744
1745 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1746 f_precopy_cur_buf = 1;
1747 else
1748 /* No room in Aggr buf, send it */
1749 f_send_cur_buf = 1;
1750 } else {
1751 f_send_cur_buf = 1;
1752 }
1753 }
1754
1755 if (f_precopy_cur_buf) {
1756 mwifiex_dbg(adapter, DATA,
1757 "data: %s: precopy current buffer\n",
1758 __func__);
1759 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1760
1761 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1762 mp_tx_aggr_port_limit_reached(card))
1763 /* No more pkts allowed in Aggr buf, send it */
1764 f_send_aggr_buf = 1;
1765 }
1766
1767 if (f_send_aggr_buf) {
1768 mwifiex_dbg(adapter, DATA,
1769 "data: %s: send aggr buffer: %d %d\n",
1770 __func__, card->mpa_tx.start_port,
1771 card->mpa_tx.ports);
1772 if (card->supports_sdio_new_mode) {
1773 u32 port_count;
1774 int i;
1775
1776 for (i = 0, port_count = 0; i < card->max_ports; i++)
1777 if (card->mpa_tx.ports & BIT(i))
1778 port_count++;
1779
1780 /* Writing data from "start_port + 0" to "start_port +
1781 * port_count -1", so decrease the count by 1
1782 */
1783 port_count--;
1784 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1785 (port_count << 8)) + card->mpa_tx.start_port;
1786 } else {
1787 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1788 (card->mpa_tx.ports << 4)) +
1789 card->mpa_tx.start_port;
1790 }
1791
1792 if (card->mpa_tx.pkt_cnt == 1)
1793 mport = adapter->ioport + port;
1794
1795 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1796 card->mpa_tx.buf_len, mport);
1797
1798 /* Save the last multi port tx aggreagation info to debug log */
1799 index = adapter->dbg.last_sdio_mp_index;
1800 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
1801 adapter->dbg.last_sdio_mp_index = index;
1802 adapter->dbg.last_mp_wr_ports[index] = mport;
1803 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
1804 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
1805 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
1806
1807 MP_TX_AGGR_BUF_RESET(card);
1808 }
1809
1810 tx_curr_single:
1811 if (f_send_cur_buf) {
1812 mwifiex_dbg(adapter, DATA,
1813 "data: %s: send current buffer %d\n",
1814 __func__, port);
1815 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1816 adapter->ioport + port);
1817 }
1818
1819 if (f_postcopy_cur_buf) {
1820 mwifiex_dbg(adapter, DATA,
1821 "data: %s: postcopy current buffer\n",
1822 __func__);
1823 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1824 }
1825
1826 return ret;
1827 }
1828
1829 /*
1830 * This function downloads data from driver to card.
1831 *
1832 * Both commands and data packets are transferred to the card by this
1833 * function.
1834 *
1835 * This function adds the SDIO specific header to the front of the buffer
1836 * before transferring. The header contains the length of the packet and
1837 * the type. The firmware handles the packets based upon this set type.
1838 */
1839 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1840 u8 type, struct sk_buff *skb,
1841 struct mwifiex_tx_param *tx_param)
1842 {
1843 struct sdio_mmc_card *card = adapter->card;
1844 int ret;
1845 u32 buf_block_len;
1846 u32 blk_size;
1847 u32 port = CTRL_PORT;
1848 u8 *payload = (u8 *)skb->data;
1849 u32 pkt_len = skb->len;
1850
1851 /* Allocate buffer and copy payload */
1852 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1853 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1854 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1855 *(__le16 *)&payload[2] = cpu_to_le16(type);
1856
1857 /*
1858 * This is SDIO specific header
1859 * u16 length,
1860 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1861 * MWIFIEX_TYPE_EVENT = 3)
1862 */
1863 if (type == MWIFIEX_TYPE_DATA) {
1864 ret = mwifiex_get_wr_port_data(adapter, &port);
1865 if (ret) {
1866 mwifiex_dbg(adapter, ERROR,
1867 "%s: no wr_port available\n",
1868 __func__);
1869 return ret;
1870 }
1871 } else {
1872 adapter->cmd_sent = true;
1873 /* Type must be MWIFIEX_TYPE_CMD */
1874
1875 if (pkt_len <= INTF_HEADER_LEN ||
1876 pkt_len > MWIFIEX_UPLD_SIZE)
1877 mwifiex_dbg(adapter, ERROR,
1878 "%s: payload=%p, nb=%d\n",
1879 __func__, payload, pkt_len);
1880
1881 if (card->supports_sdio_new_mode)
1882 port = CMD_PORT_SLCT;
1883 }
1884
1885 /* Transfer data to card */
1886 pkt_len = buf_block_len * blk_size;
1887
1888 if (tx_param)
1889 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1890 port, tx_param->next_pkt_len
1891 );
1892 else
1893 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1894 port, 0);
1895
1896 if (ret) {
1897 if (type == MWIFIEX_TYPE_CMD)
1898 adapter->cmd_sent = false;
1899 if (type == MWIFIEX_TYPE_DATA) {
1900 adapter->data_sent = false;
1901 /* restore curr_wr_port in error cases */
1902 card->curr_wr_port = port;
1903 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1904 }
1905 } else {
1906 if (type == MWIFIEX_TYPE_DATA) {
1907 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1908 adapter->data_sent = true;
1909 else
1910 adapter->data_sent = false;
1911 }
1912 }
1913
1914 return ret;
1915 }
1916
1917 /*
1918 * This function allocates the MPA Tx and Rx buffers.
1919 */
1920 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1921 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1922 {
1923 struct sdio_mmc_card *card = adapter->card;
1924 u32 rx_buf_size;
1925 int ret = 0;
1926
1927 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1928 if (!card->mpa_tx.buf) {
1929 ret = -1;
1930 goto error;
1931 }
1932
1933 card->mpa_tx.buf_size = mpa_tx_buf_size;
1934
1935 rx_buf_size = max_t(u32, mpa_rx_buf_size,
1936 (u32)SDIO_MAX_AGGR_BUF_SIZE);
1937 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
1938 if (!card->mpa_rx.buf) {
1939 ret = -1;
1940 goto error;
1941 }
1942
1943 card->mpa_rx.buf_size = rx_buf_size;
1944
1945 error:
1946 if (ret) {
1947 kfree(card->mpa_tx.buf);
1948 kfree(card->mpa_rx.buf);
1949 card->mpa_tx.buf_size = 0;
1950 card->mpa_rx.buf_size = 0;
1951 }
1952
1953 return ret;
1954 }
1955
1956 /*
1957 * This function unregisters the SDIO device.
1958 *
1959 * The SDIO IRQ is released, the function is disabled and driver
1960 * data is set to null.
1961 */
1962 static void
1963 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1964 {
1965 struct sdio_mmc_card *card = adapter->card;
1966
1967 if (adapter->card) {
1968 sdio_claim_host(card->func);
1969 sdio_disable_func(card->func);
1970 sdio_release_host(card->func);
1971 }
1972 }
1973
1974 /*
1975 * This function registers the SDIO device.
1976 *
1977 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1978 */
1979 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1980 {
1981 int ret;
1982 struct sdio_mmc_card *card = adapter->card;
1983 struct sdio_func *func = card->func;
1984
1985 /* save adapter pointer in card */
1986 card->adapter = adapter;
1987 adapter->tx_buf_size = card->tx_buf_size;
1988
1989 sdio_claim_host(func);
1990
1991 /* Set block size */
1992 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1993 sdio_release_host(func);
1994 if (ret) {
1995 mwifiex_dbg(adapter, ERROR,
1996 "cannot set SDIO block size\n");
1997 return ret;
1998 }
1999
2000
2001 adapter->dev = &func->dev;
2002
2003 strcpy(adapter->fw_name, card->firmware);
2004 if (card->fw_dump_enh) {
2005 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2006 adapter->num_mem_types = 1;
2007 } else {
2008 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2009 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2010 }
2011
2012 return 0;
2013 }
2014
2015 /*
2016 * This function initializes the SDIO driver.
2017 *
2018 * The following initializations steps are followed -
2019 * - Read the Host interrupt status register to acknowledge
2020 * the first interrupt got from bootloader
2021 * - Disable host interrupt mask register
2022 * - Get SDIO port
2023 * - Initialize SDIO variables in card
2024 * - Allocate MP registers
2025 * - Allocate MPA Tx and Rx buffers
2026 */
2027 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2028 {
2029 struct sdio_mmc_card *card = adapter->card;
2030 const struct mwifiex_sdio_card_reg *reg = card->reg;
2031 int ret;
2032 u8 sdio_ireg;
2033
2034 sdio_set_drvdata(card->func, card);
2035
2036 /*
2037 * Read the host_int_status_reg for ACK the first interrupt got
2038 * from the bootloader. If we don't do this we get a interrupt
2039 * as soon as we register the irq.
2040 */
2041 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2042
2043 /* Get SDIO ioport */
2044 mwifiex_init_sdio_ioport(adapter);
2045
2046 /* Initialize SDIO variables in card */
2047 card->mp_rd_bitmap = 0;
2048 card->mp_wr_bitmap = 0;
2049 card->curr_rd_port = reg->start_rd_port;
2050 card->curr_wr_port = reg->start_wr_port;
2051
2052 card->mp_data_port_mask = reg->data_port_mask;
2053
2054 card->mpa_tx.buf_len = 0;
2055 card->mpa_tx.pkt_cnt = 0;
2056 card->mpa_tx.start_port = 0;
2057
2058 card->mpa_tx.enabled = 1;
2059 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2060
2061 card->mpa_rx.buf_len = 0;
2062 card->mpa_rx.pkt_cnt = 0;
2063 card->mpa_rx.start_port = 0;
2064
2065 card->mpa_rx.enabled = 1;
2066 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2067
2068 /* Allocate buffers for SDIO MP-A */
2069 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2070 if (!card->mp_regs)
2071 return -ENOMEM;
2072
2073 /* Allocate skb pointer buffers */
2074 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
2075 card->mp_agg_pkt_limit, GFP_KERNEL);
2076 if (!card->mpa_rx.skb_arr) {
2077 kfree(card->mp_regs);
2078 return -ENOMEM;
2079 }
2080
2081 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
2082 card->mp_agg_pkt_limit, GFP_KERNEL);
2083 if (!card->mpa_rx.len_arr) {
2084 kfree(card->mp_regs);
2085 kfree(card->mpa_rx.skb_arr);
2086 return -ENOMEM;
2087 }
2088
2089 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2090 card->mp_tx_agg_buf_size,
2091 card->mp_rx_agg_buf_size);
2092
2093 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2094 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2095 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2096 /* Disable rx single port aggregation */
2097 adapter->host_disable_sdio_rx_aggr = true;
2098
2099 ret = mwifiex_alloc_sdio_mpa_buffers
2100 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2101 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2102 if (ret) {
2103 /* Disable multi port aggregation */
2104 card->mpa_tx.enabled = 0;
2105 card->mpa_rx.enabled = 0;
2106 }
2107 }
2108
2109 adapter->auto_tdls = card->can_auto_tdls;
2110 adapter->ext_scan = card->can_ext_scan;
2111 return 0;
2112 }
2113
2114 /*
2115 * This function resets the MPA Tx and Rx buffers.
2116 */
2117 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2118 {
2119 struct sdio_mmc_card *card = adapter->card;
2120
2121 MP_TX_AGGR_BUF_RESET(card);
2122 MP_RX_AGGR_BUF_RESET(card);
2123 }
2124
2125 /*
2126 * This function cleans up the allocated card buffers.
2127 *
2128 * The following are freed by this function -
2129 * - MP registers
2130 * - MPA Tx buffer
2131 * - MPA Rx buffer
2132 */
2133 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2134 {
2135 struct sdio_mmc_card *card = adapter->card;
2136
2137 kfree(card->mp_regs);
2138 kfree(card->mpa_rx.skb_arr);
2139 kfree(card->mpa_rx.len_arr);
2140 kfree(card->mpa_tx.buf);
2141 kfree(card->mpa_rx.buf);
2142 sdio_set_drvdata(card->func, NULL);
2143 kfree(card);
2144 }
2145
2146 /*
2147 * This function updates the MP end port in card.
2148 */
2149 static void
2150 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2151 {
2152 struct sdio_mmc_card *card = adapter->card;
2153 const struct mwifiex_sdio_card_reg *reg = card->reg;
2154 int i;
2155
2156 card->mp_end_port = port;
2157
2158 card->mp_data_port_mask = reg->data_port_mask;
2159
2160 if (reg->start_wr_port) {
2161 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2162 card->mp_data_port_mask &=
2163 ~(1 << (card->max_ports - i));
2164 }
2165
2166 card->curr_wr_port = reg->start_wr_port;
2167
2168 mwifiex_dbg(adapter, CMD,
2169 "cmd: mp_end_port %d, data port mask 0x%x\n",
2170 port, card->mp_data_port_mask);
2171 }
2172
2173 static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
2174 {
2175 struct sdio_func *func = card->func;
2176 const struct sdio_device_id *device_id = card->device_id;
2177
2178 /* TODO mmc_hw_reset does not require destroying and re-probing the
2179 * whole adapter. Hence there was no need to for this rube-goldberg
2180 * design to reload the fw from an external workqueue. If we don't
2181 * destroy the adapter we could reload the fw from
2182 * mwifiex_main_work_queue directly.
2183 * The real difficulty with fw reset is to restore all the user
2184 * settings applied through ioctl. By destroying and recreating the
2185 * adapter, we take the easy way out, since we rely on user space to
2186 * restore them. We assume that user space will treat the new
2187 * incarnation of the adapter(interfaces) as if they had been just
2188 * discovered and initializes them from scratch.
2189 */
2190
2191 mwifiex_sdio_remove(func);
2192
2193 /* power cycle the adapter */
2194 sdio_claim_host(func);
2195 mmc_hw_reset(func->card->host);
2196 sdio_release_host(func);
2197
2198 mwifiex_sdio_probe(func, device_id);
2199 }
2200
2201 static struct mwifiex_adapter *save_adapter;
2202 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2203 {
2204 struct sdio_mmc_card *card = adapter->card;
2205
2206 /* TODO card pointer is unprotected. If the adapter is removed
2207 * physically, sdio core might trigger mwifiex_sdio_remove, before this
2208 * workqueue is run, which will destroy the adapter struct. When this
2209 * workqueue eventually exceutes it will dereference an invalid adapter
2210 * pointer
2211 */
2212 mwifiex_recreate_adapter(card);
2213 }
2214
2215 /* This function read/write firmware */
2216 static enum
2217 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2218 u8 doneflag)
2219 {
2220 struct sdio_mmc_card *card = adapter->card;
2221 int ret, tries;
2222 u8 ctrl_data = 0;
2223
2224 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2225 card->reg->fw_dump_ctrl, &ret);
2226 if (ret) {
2227 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2228 return RDWR_STATUS_FAILURE;
2229 }
2230 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2231 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2232 &ret);
2233 if (ret) {
2234 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2235 return RDWR_STATUS_FAILURE;
2236 }
2237 if (ctrl_data == FW_DUMP_DONE)
2238 break;
2239 if (doneflag && ctrl_data == doneflag)
2240 return RDWR_STATUS_DONE;
2241 if (ctrl_data != card->reg->fw_dump_host_ready) {
2242 mwifiex_dbg(adapter, WARN,
2243 "The ctrl reg was changed, re-try again\n");
2244 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2245 card->reg->fw_dump_ctrl, &ret);
2246 if (ret) {
2247 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2248 return RDWR_STATUS_FAILURE;
2249 }
2250 }
2251 usleep_range(100, 200);
2252 }
2253 if (ctrl_data == card->reg->fw_dump_host_ready) {
2254 mwifiex_dbg(adapter, ERROR,
2255 "Fail to pull ctrl_data\n");
2256 return RDWR_STATUS_FAILURE;
2257 }
2258
2259 return RDWR_STATUS_SUCCESS;
2260 }
2261
2262 /* This function dump firmware memory to file */
2263 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2264 {
2265 struct sdio_mmc_card *card = adapter->card;
2266 int ret = 0;
2267 unsigned int reg, reg_start, reg_end;
2268 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2269 enum rdwr_status stat;
2270 u32 memory_size;
2271
2272 if (!card->can_dump_fw)
2273 return;
2274
2275 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2276 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2277
2278 if (entry->mem_ptr) {
2279 vfree(entry->mem_ptr);
2280 entry->mem_ptr = NULL;
2281 }
2282 entry->mem_size = 0;
2283 }
2284
2285 mwifiex_pm_wakeup_card(adapter);
2286 sdio_claim_host(card->func);
2287
2288 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2289
2290 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2291 if (stat == RDWR_STATUS_FAILURE)
2292 goto done;
2293
2294 reg = card->reg->fw_dump_start;
2295 /* Read the number of the memories which will dump */
2296 dump_num = sdio_readb(card->func, reg, &ret);
2297 if (ret) {
2298 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2299 goto done;
2300 }
2301
2302 /* Read the length of every memory which will dump */
2303 for (idx = 0; idx < dump_num; idx++) {
2304 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2305
2306 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2307 if (stat == RDWR_STATUS_FAILURE)
2308 goto done;
2309
2310 memory_size = 0;
2311 reg = card->reg->fw_dump_start;
2312 for (i = 0; i < 4; i++) {
2313 read_reg = sdio_readb(card->func, reg, &ret);
2314 if (ret) {
2315 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2316 goto done;
2317 }
2318 memory_size |= (read_reg << i*8);
2319 reg++;
2320 }
2321
2322 if (memory_size == 0) {
2323 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2324 ret = mwifiex_write_reg(adapter,
2325 card->reg->fw_dump_ctrl,
2326 FW_DUMP_READ_DONE);
2327 if (ret) {
2328 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2329 return;
2330 }
2331 break;
2332 }
2333
2334 mwifiex_dbg(adapter, DUMP,
2335 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2336 entry->mem_ptr = vmalloc(memory_size + 1);
2337 entry->mem_size = memory_size;
2338 if (!entry->mem_ptr) {
2339 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2340 entry->mem_name);
2341 goto done;
2342 }
2343 dbg_ptr = entry->mem_ptr;
2344 end_ptr = dbg_ptr + memory_size;
2345
2346 doneflag = entry->done_flag;
2347 mwifiex_dbg(adapter, DUMP,
2348 "Start %s output, please wait...\n",
2349 entry->mem_name);
2350
2351 do {
2352 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2353 if (stat == RDWR_STATUS_FAILURE)
2354 goto done;
2355
2356 reg_start = card->reg->fw_dump_start;
2357 reg_end = card->reg->fw_dump_end;
2358 for (reg = reg_start; reg <= reg_end; reg++) {
2359 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2360 if (ret) {
2361 mwifiex_dbg(adapter, ERROR,
2362 "SDIO read err\n");
2363 goto done;
2364 }
2365 if (dbg_ptr < end_ptr)
2366 dbg_ptr++;
2367 else
2368 mwifiex_dbg(adapter, ERROR,
2369 "Allocated buf not enough\n");
2370 }
2371
2372 if (stat != RDWR_STATUS_DONE)
2373 continue;
2374
2375 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2376 entry->mem_name, dbg_ptr - entry->mem_ptr);
2377 break;
2378 } while (1);
2379 }
2380 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2381
2382 done:
2383 sdio_release_host(card->func);
2384 }
2385
2386 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2387 {
2388 struct sdio_mmc_card *card = adapter->card;
2389 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2390 unsigned int reg, reg_start, reg_end;
2391 u8 start_flag = 0, done_flag = 0;
2392 u8 *dbg_ptr, *end_ptr;
2393 enum rdwr_status stat;
2394 int ret = -1, tries;
2395
2396 if (!card->fw_dump_enh)
2397 return;
2398
2399 if (entry->mem_ptr) {
2400 vfree(entry->mem_ptr);
2401 entry->mem_ptr = NULL;
2402 }
2403 entry->mem_size = 0;
2404
2405 mwifiex_pm_wakeup_card(adapter);
2406 sdio_claim_host(card->func);
2407
2408 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2409
2410 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2411 if (stat == RDWR_STATUS_FAILURE)
2412 goto done;
2413
2414 reg_start = card->reg->fw_dump_start;
2415 reg_end = card->reg->fw_dump_end;
2416 for (reg = reg_start; reg <= reg_end; reg++) {
2417 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2418 start_flag = sdio_readb(card->func, reg, &ret);
2419 if (ret) {
2420 mwifiex_dbg(adapter, ERROR,
2421 "SDIO read err\n");
2422 goto done;
2423 }
2424 if (start_flag == 0)
2425 break;
2426 if (tries == MAX_POLL_TRIES) {
2427 mwifiex_dbg(adapter, ERROR,
2428 "FW not ready to dump\n");
2429 ret = -1;
2430 goto done;
2431 }
2432 }
2433 usleep_range(100, 200);
2434 }
2435
2436 entry->mem_ptr = vmalloc(0xf0000 + 1);
2437 if (!entry->mem_ptr) {
2438 ret = -1;
2439 goto done;
2440 }
2441 dbg_ptr = entry->mem_ptr;
2442 entry->mem_size = 0xf0000;
2443 end_ptr = dbg_ptr + entry->mem_size;
2444
2445 done_flag = entry->done_flag;
2446 mwifiex_dbg(adapter, DUMP,
2447 "Start %s output, please wait...\n", entry->mem_name);
2448
2449 while (true) {
2450 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2451 if (stat == RDWR_STATUS_FAILURE)
2452 goto done;
2453 for (reg = reg_start; reg <= reg_end; reg++) {
2454 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2455 if (ret) {
2456 mwifiex_dbg(adapter, ERROR,
2457 "SDIO read err\n");
2458 goto done;
2459 }
2460 dbg_ptr++;
2461 if (dbg_ptr >= end_ptr) {
2462 u8 *tmp_ptr;
2463
2464 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2465 if (!tmp_ptr)
2466 goto done;
2467
2468 memcpy(tmp_ptr, entry->mem_ptr,
2469 entry->mem_size);
2470 vfree(entry->mem_ptr);
2471 entry->mem_ptr = tmp_ptr;
2472 tmp_ptr = NULL;
2473 dbg_ptr = entry->mem_ptr + entry->mem_size;
2474 entry->mem_size += 0x4000;
2475 end_ptr = entry->mem_ptr + entry->mem_size;
2476 }
2477 }
2478 if (stat == RDWR_STATUS_DONE) {
2479 entry->mem_size = dbg_ptr - entry->mem_ptr;
2480 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2481 entry->mem_name, entry->mem_size);
2482 ret = 0;
2483 break;
2484 }
2485 }
2486 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2487
2488 done:
2489 if (ret) {
2490 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2491 if (entry->mem_ptr) {
2492 vfree(entry->mem_ptr);
2493 entry->mem_ptr = NULL;
2494 }
2495 entry->mem_size = 0;
2496 }
2497 sdio_release_host(card->func);
2498 }
2499
2500 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2501 {
2502 struct sdio_mmc_card *card = adapter->card;
2503
2504 mwifiex_drv_info_dump(adapter);
2505 if (card->fw_dump_enh)
2506 mwifiex_sdio_generic_fw_dump(adapter);
2507 else
2508 mwifiex_sdio_fw_dump(adapter);
2509 mwifiex_upload_device_dump(adapter);
2510 }
2511
2512 static void mwifiex_sdio_work(struct work_struct *work)
2513 {
2514 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2515 &iface_work_flags))
2516 mwifiex_sdio_device_dump_work(save_adapter);
2517 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2518 &iface_work_flags))
2519 mwifiex_sdio_card_reset_work(save_adapter);
2520 }
2521
2522 static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
2523 /* This function resets the card */
2524 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2525 {
2526 save_adapter = adapter;
2527 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags))
2528 return;
2529
2530 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
2531
2532 schedule_work(&sdio_work);
2533 }
2534
2535 /* This function dumps FW information */
2536 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
2537 {
2538 save_adapter = adapter;
2539 if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags))
2540 return;
2541
2542 set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
2543 schedule_work(&sdio_work);
2544 }
2545
2546 /* Function to dump SDIO function registers and SDIO scratch registers in case
2547 * of FW crash
2548 */
2549 static int
2550 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2551 {
2552 char *p = drv_buf;
2553 struct sdio_mmc_card *cardp = adapter->card;
2554 int ret = 0;
2555 u8 count, func, data, index = 0, size = 0;
2556 u8 reg, reg_start, reg_end;
2557 char buf[256], *ptr;
2558
2559 if (!p)
2560 return 0;
2561
2562 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
2563
2564 mwifiex_pm_wakeup_card(adapter);
2565
2566 sdio_claim_host(cardp->func);
2567
2568 for (count = 0; count < 5; count++) {
2569 memset(buf, 0, sizeof(buf));
2570 ptr = buf;
2571
2572 switch (count) {
2573 case 0:
2574 /* Read the registers of SDIO function0 */
2575 func = count;
2576 reg_start = 0;
2577 reg_end = 9;
2578 break;
2579 case 1:
2580 /* Read the registers of SDIO function1 */
2581 func = count;
2582 reg_start = cardp->reg->func1_dump_reg_start;
2583 reg_end = cardp->reg->func1_dump_reg_end;
2584 break;
2585 case 2:
2586 index = 0;
2587 func = 1;
2588 reg_start = cardp->reg->func1_spec_reg_table[index++];
2589 size = cardp->reg->func1_spec_reg_num;
2590 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2591 break;
2592 default:
2593 /* Read the scratch registers of SDIO function1 */
2594 if (count == 4)
2595 mdelay(100);
2596 func = 1;
2597 reg_start = cardp->reg->func1_scratch_reg;
2598 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2599 }
2600
2601 if (count != 2)
2602 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2603 func, reg_start, reg_end);
2604 else
2605 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2606
2607 for (reg = reg_start; reg <= reg_end;) {
2608 if (func == 0)
2609 data = sdio_f0_readb(cardp->func, reg, &ret);
2610 else
2611 data = sdio_readb(cardp->func, reg, &ret);
2612
2613 if (count == 2)
2614 ptr += sprintf(ptr, "(%#x) ", reg);
2615 if (!ret) {
2616 ptr += sprintf(ptr, "%02x ", data);
2617 } else {
2618 ptr += sprintf(ptr, "ERR");
2619 break;
2620 }
2621
2622 if (count == 2 && reg < reg_end)
2623 reg = cardp->reg->func1_spec_reg_table[index++];
2624 else
2625 reg++;
2626 }
2627
2628 mwifiex_dbg(adapter, MSG, "%s\n", buf);
2629 p += sprintf(p, "%s\n", buf);
2630 }
2631
2632 sdio_release_host(cardp->func);
2633
2634 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
2635
2636 return p - drv_buf;
2637 }
2638
2639 static struct mwifiex_if_ops sdio_ops = {
2640 .init_if = mwifiex_init_sdio,
2641 .cleanup_if = mwifiex_cleanup_sdio,
2642 .check_fw_status = mwifiex_check_fw_status,
2643 .check_winner_status = mwifiex_check_winner_status,
2644 .prog_fw = mwifiex_prog_fw_w_helper,
2645 .register_dev = mwifiex_register_dev,
2646 .unregister_dev = mwifiex_unregister_dev,
2647 .enable_int = mwifiex_sdio_enable_host_int,
2648 .disable_int = mwifiex_sdio_disable_host_int,
2649 .process_int_status = mwifiex_process_int_status,
2650 .host_to_card = mwifiex_sdio_host_to_card,
2651 .wakeup = mwifiex_pm_wakeup_card,
2652 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2653
2654 /* SDIO specific */
2655 .update_mp_end_port = mwifiex_update_mp_end_port,
2656 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2657 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2658 .event_complete = mwifiex_sdio_event_complete,
2659 .card_reset = mwifiex_sdio_card_reset,
2660 .reg_dump = mwifiex_sdio_reg_dump,
2661 .device_dump = mwifiex_sdio_device_dump,
2662 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2663 };
2664
2665 /*
2666 * This function initializes the SDIO driver.
2667 *
2668 * This initiates the semaphore and registers the device with
2669 * SDIO bus.
2670 */
2671 static int
2672 mwifiex_sdio_init_module(void)
2673 {
2674 sema_init(&add_remove_card_sem, 1);
2675
2676 /* Clear the flag in case user removes the card. */
2677 user_rmmod = 0;
2678
2679 return sdio_register_driver(&mwifiex_sdio);
2680 }
2681
2682 /*
2683 * This function cleans up the SDIO driver.
2684 *
2685 * The following major steps are followed for cleanup -
2686 * - Resume the device if its suspended
2687 * - Disconnect the device if connected
2688 * - Shutdown the firmware
2689 * - Unregister the device from SDIO bus.
2690 */
2691 static void
2692 mwifiex_sdio_cleanup_module(void)
2693 {
2694 if (!down_interruptible(&add_remove_card_sem))
2695 up(&add_remove_card_sem);
2696
2697 /* Set the flag as user is removing this module. */
2698 user_rmmod = 1;
2699 cancel_work_sync(&sdio_work);
2700
2701 sdio_unregister_driver(&mwifiex_sdio);
2702 }
2703
2704 module_init(mwifiex_sdio_init_module);
2705 module_exit(mwifiex_sdio_cleanup_module);
2706
2707 MODULE_AUTHOR("Marvell International Ltd.");
2708 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2709 MODULE_VERSION(SDIO_VERSION);
2710 MODULE_LICENSE("GPL v2");
2711 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2712 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2713 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2714 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
2715 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
2716 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
Linux kernel - Deliverables
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