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Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[deliverable/linux.git] / drivers / net / wireless / marvell / mwifiex / sdio.c
CommitLineData
5e6e3a92
BZ		 1/*
2 * Marvell Wireless LAN device driver: SDIO specific handling
3 *
65da33f5 4 * Copyright (C) 2011-2014, Marvell International Ltd.
5e6e3a92
BZ		 5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20#include <linux/firmware.h>
21
22#include "decl.h"
23#include "ioctl.h"
24#include "util.h"
25#include "fw.h"
26#include "main.h"
27#include "wmm.h"
28#include "11n.h"
29#include "sdio.h"
30
31
32#define SDIO_VERSION "1.0"
33
287546df
AK		 34/* The mwifiex_sdio_remove() callback function is called when
35 * user removes this module from kernel space or ejects
36 * the card from the slot. The driver handles these 2 cases
37 * differently.
38 * If the user is removing the module, the few commands (FUNC_SHUTDOWN,
39 * HS_CANCEL etc.) are sent to the firmware.
40 * If the card is removed, there is no need to send these command.
41 *
42 * The variable 'user_rmmod' is used to distinguish these two
43 * scenarios. This flag is initialized as FALSE in case the card
44 * is removed, and will be set to TRUE for module removal when
45 * module_exit function is called.
46 */
47static u8 user_rmmod;
48
5e6e3a92 49static struct mwifiex_if_ops sdio_ops;
2f5872b6 50static unsigned long iface_work_flags;
5e6e3a92
BZ		 51
52static struct semaphore add_remove_card_sem;
53
eee7f196
ZL		 54static struct memory_type_mapping generic_mem_type_map[] = {
55 {"DUMP", NULL, 0, 0xDD},
56};
57
54881c6b
AK		 58static 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
5e6e3a92
BZ		 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 */
84static int
85mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
86{
270e58e8 87 int ret;
5e6e3a92
BZ		 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",
5dbd326c 91 func->vendor, func->device, func->class, func->num);
5e6e3a92
BZ		 92
93 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
e404decb 94 if (!card)
5e6e3a92 95 return -ENOMEM;
5e6e3a92
BZ		 96
97 card->func = func;
b4336a28 98 card->device_id = id;
5e6e3a92
BZ		 99
100 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
101
05889f82
AK		 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;
b60186f8
YAP		 109 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
110 card->has_control_mask = data->has_control_mask;
828cf222 111 card->tx_buf_size = data->tx_buf_size;
e1aa93a4
AK		 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;
b4e8aebb 114 card->can_dump_fw = data->can_dump_fw;
eee7f196 115 card->fw_dump_enh = data->fw_dump_enh;
b4e8aebb 116 card->can_auto_tdls = data->can_auto_tdls;
1fe192d8 117 card->can_ext_scan = data->can_ext_scan;
05889f82
AK		 118 }
119
5e6e3a92
BZ		 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__);
b53575ec 126 kfree(card);
5e6e3a92
BZ		 127 return -EIO;
128 }
129
d930faee
AK		 130 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
131 MWIFIEX_SDIO)) {
5e6e3a92
BZ		 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
2cdf359a
AK		 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 */
153static 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) {
acebe8c1
ZL		 175 mwifiex_dbg(adapter, WARN,
176 "device already resumed\n");
2cdf359a
AK		 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_ASYNC_CMD);
185
186 return 0;
187}
188
5e6e3a92
BZ		 189/*
190 * SDIO remove.
191 *
192 * This function removes the interface and frees up the card structure.
193 */
194static void
195mwifiex_sdio_remove(struct sdio_func *func)
196{
197 struct sdio_mmc_card *card;
287546df 198 struct mwifiex_adapter *adapter;
5dbd326c 199 struct mwifiex_private *priv;
5e6e3a92 200
287546df
AK		 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
acebe8c1
ZL		 209 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
210
287546df
AK		 211 if (user_rmmod) {
212 if (adapter->is_suspended)
213 mwifiex_sdio_resume(adapter->dev);
214
848819f4 215 mwifiex_deauthenticate_all(adapter);
287546df 216
5dbd326c
YAP		 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);
5e6e3a92 220 }
287546df
AK		 221
222 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
5e6e3a92
BZ		 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 */
235static int mwifiex_sdio_suspend(struct device *dev)
236{
237 struct sdio_func *func = dev_to_sdio_func(dev);
238 struct sdio_mmc_card *card;
270e58e8 239 struct mwifiex_adapter *adapter;
5e6e3a92 240 mmc_pm_flag_t pm_flag = 0;
5e6e3a92
BZ		 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",
5dbd326c 246 sdio_func_id(func), pm_flag);
5e6e3a92
BZ		 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 */
dd321acd 266 if (!mwifiex_enable_hs(adapter)) {
acebe8c1
ZL		 267 mwifiex_dbg(adapter, ERROR,
268 "cmd: failed to suspend\n");
c0dbba66 269 adapter->hs_enabling = false;
dd321acd 270 return -EFAULT;
5e6e3a92
BZ		 271 }
272
acebe8c1
ZL		 273 mwifiex_dbg(adapter, INFO,
274 "cmd: suspend with MMC_PM_KEEP_POWER\n");
dd321acd
BZ		 275 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
276
5e6e3a92
BZ		 277 /* Indicate device suspended */
278 adapter->is_suspended = true;
c0dbba66 279 adapter->hs_enabling = false;
5e6e3a92 280
5e6e3a92
BZ		 281 return ret;
282}
283
98e6b9df
W		 284/* Device ID for SD8786 */
285#define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
5e6e3a92
BZ		 286/* Device ID for SD8787 */
287#define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
e3bea1c8
BZ		 288/* Device ID for SD8797 */
289#define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
b60186f8
YAP		 290/* Device ID for SD8897 */
291#define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
030bb75a
AP		 292/* Device ID for SD8887 */
293#define SDIO_DEVICE_ID_MARVELL_8887 (0x9135)
52bd3d20
YAP		 294/* Device ID for SD8801 */
295#define SDIO_DEVICE_ID_MARVELL_8801 (0x9139)
6d85ef00
ZL		 296/* Device ID for SD8997 */
297#define SDIO_DEVICE_ID_MARVELL_8997 (0x9141)
52bd3d20 298
5e6e3a92
BZ		 299
300/* WLAN IDs */
301static const struct sdio_device_id mwifiex_ids[] = {
05889f82
AK		 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},
b60186f8
YAP		 308 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
309 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
030bb75a
AP		 310 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
311 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
52bd3d20
YAP		 312 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
313 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
6d85ef00
ZL		 314 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997),
315 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
5e6e3a92
BZ		 316 {},
317};
318
319MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
320
321static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
322 .suspend = mwifiex_sdio_suspend,
323 .resume = mwifiex_sdio_resume,
324};
325
326static 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
232fde06
DD		 337/* Write data into SDIO card register. Caller claims SDIO device. */
338static int
339mwifiex_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
5e6e3a92
BZ		 346/*
347 * This function writes data into SDIO card register.
348 */
349static int
ab93d4ff 350mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
5e6e3a92
BZ		 351{
352 struct sdio_mmc_card *card = adapter->card;
232fde06 353 int ret;
5e6e3a92
BZ		 354
355 sdio_claim_host(card->func);
232fde06 356 ret = mwifiex_write_reg_locked(card->func, reg, data);
5e6e3a92
BZ		 357 sdio_release_host(card->func);
358
359 return ret;
360}
361
362/*
363 * This function reads data from SDIO card register.
364 */
365static int
ab93d4ff 366mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
5e6e3a92
BZ		 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 */
386static int
387mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
572e8f3e 388 u8 *buffer, u32 pkt_len, u32 port)
5e6e3a92
BZ		 389{
390 struct sdio_mmc_card *card = adapter->card;
5b2e2ecc 391 int ret;
5e6e3a92
BZ		 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) {
acebe8c1
ZL		 402 mwifiex_dbg(adapter, ERROR,
403 "%s: not allowed while suspended\n", __func__);
5e6e3a92
BZ		 404 return -1;
405 }
406
407 sdio_claim_host(card->func);
408
5b2e2ecc 409 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
5e6e3a92
BZ		 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 */
572e8f3e
AK		 419static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
420 u32 len, u32 port, u8 claim)
5e6e3a92
BZ		 421{
422 struct sdio_mmc_card *card = adapter->card;
5b2e2ecc 423 int ret;
5dbd326c
YAP		 424 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
425 : BLOCK_MODE;
5e6e3a92 426 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
5dbd326c
YAP		 427 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
428 : len;
5e6e3a92
BZ		 429 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
430
431 if (claim)
432 sdio_claim_host(card->func);
433
5b2e2ecc 434 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
5e6e3a92
BZ		 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 */
448static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
449{
acebe8c1
ZL		 450 mwifiex_dbg(adapter, EVENT,
451 "event: wakeup device...\n");
5e6e3a92 452
636c4598 453 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
5e6e3a92
BZ		 454}
455
456/*
457 * This function is called after the card has woken up.
458 *
459 * The card configuration register is reset.
460 */
461static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
462{
acebe8c1
ZL		 463 mwifiex_dbg(adapter, EVENT,
464 "cmd: wakeup device completed\n");
5e6e3a92 465
636c4598 466 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
5e6e3a92
BZ		 467}
468
469/*
b60186f8
YAP		 470 * This function is used to initialize IO ports for the
471 * chipsets supporting SDIO new mode eg SD8897.
472 */
473static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
474{
475 u8 reg;
554a0113 476 struct sdio_mmc_card *card = adapter->card;
b60186f8
YAP		 477
478 adapter->ioport = MEM_PORT;
479
480 /* enable sdio new mode */
554a0113 481 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, &reg))
b60186f8 482 return -1;
554a0113 483 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
b60186f8
YAP		 484 reg | CMD53_NEW_MODE))
485 return -1;
486
487 /* Configure cmd port and enable reading rx length from the register */
554a0113 488 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, &reg))
b60186f8 489 return -1;
554a0113
AP		 490 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
491 reg | CMD_PORT_RD_LEN_EN))
b60186f8
YAP		 492 return -1;
493
494 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
495 * completed
496 */
554a0113 497 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, &reg))
b60186f8 498 return -1;
554a0113
AP		 499 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
500 reg | CMD_PORT_AUTO_EN))
b60186f8
YAP		 501 return -1;
502
503 return 0;
504}
505
506/* This function initializes the IO ports.
5e6e3a92
BZ		 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 */
513static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
514{
ab93d4ff 515 u8 reg;
05889f82 516 struct sdio_mmc_card *card = adapter->card;
5e6e3a92
BZ		 517
518 adapter->ioport = 0;
519
b60186f8
YAP		 520 if (card->supports_sdio_new_mode) {
521 if (mwifiex_init_sdio_new_mode(adapter))
522 return -1;
523 goto cont;
524 }
525
5e6e3a92 526 /* Read the IO port */
554a0113 527 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, &reg))
5e6e3a92
BZ		 528 adapter->ioport |= (reg & 0xff);
529 else
530 return -1;
531
554a0113 532 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, &reg))
5e6e3a92
BZ		 533 adapter->ioport |= ((reg & 0xff) << 8);
534 else
535 return -1;
536
554a0113 537 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, &reg))
5e6e3a92
BZ		 538 adapter->ioport |= ((reg & 0xff) << 16);
539 else
540 return -1;
b60186f8 541cont:
acebe8c1
ZL		 542 mwifiex_dbg(adapter, INFO,
543 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
5e6e3a92
BZ		 544
545 /* Set Host interrupt reset to read to clear */
554a0113
AP		 546 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, &reg))
547 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
05889f82 548 reg | card->reg->sdio_int_mask);
5e6e3a92
BZ		 549 else
550 return -1;
551
552 /* Dnld/Upld ready set to auto reset */
05889f82
AK		 553 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, &reg))
554 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
5e6e3a92
BZ		 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 */
565static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
566 u8 *payload, u32 pkt_len, u32 port)
567{
568 u32 i = 0;
270e58e8 569 int ret;
5e6e3a92
BZ		 570
571 do {
572e8f3e 572 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
5e6e3a92
BZ		 573 if (ret) {
574 i++;
acebe8c1
ZL		 575 mwifiex_dbg(adapter, ERROR,
576 "host_to_card, write iomem\t"
577 "(%d) failed: %d\n", i, ret);
5dbd326c 578 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
acebe8c1
ZL		 579 mwifiex_dbg(adapter, ERROR,
580 "write CFG reg failed\n");
5e6e3a92
BZ		 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 */
599static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
600{
601 struct sdio_mmc_card *card = adapter->card;
05889f82 602 const struct mwifiex_sdio_card_reg *reg = card->reg;
5ac253d5 603 u32 rd_bitmap = card->mp_rd_bitmap;
5e6e3a92 604
acebe8c1
ZL		 605 mwifiex_dbg(adapter, DATA,
606 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
5e6e3a92 607
b60186f8
YAP		 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 }
5e6e3a92 615
b60186f8
YAP		 616 if ((card->has_control_mask) &&
617 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
5ac253d5 618 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
5e6e3a92 619 *port = CTRL_PORT;
acebe8c1
ZL		 620 mwifiex_dbg(adapter, DATA,
621 "data: port=%d mp_rd_bitmap=0x%08x\n",
622 *port, card->mp_rd_bitmap);
e6a52030 623 return 0;
5e6e3a92 624 }
e6a52030
AK		 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
acebe8c1
ZL		 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);
e6a52030 639
5e6e3a92
BZ		 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 */
0fc0d43b 650static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
5e6e3a92
BZ		 651{
652 struct sdio_mmc_card *card = adapter->card;
b60186f8 653 const struct mwifiex_sdio_card_reg *reg = card->reg;
5ac253d5 654 u32 wr_bitmap = card->mp_wr_bitmap;
5e6e3a92 655
acebe8c1
ZL		 656 mwifiex_dbg(adapter, DATA,
657 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
5e6e3a92 658
c48ba040 659 if (!(wr_bitmap & card->mp_data_port_mask)) {
b60186f8
YAP		 660 adapter->data_sent = true;
661 return -EBUSY;
b60186f8 662 }
5e6e3a92
BZ		 663
664 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
5ac253d5 665 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
5e6e3a92 666 *port = card->curr_wr_port;
c48ba040 667 if (++card->curr_wr_port == card->mp_end_port)
b60186f8 668 card->curr_wr_port = reg->start_wr_port;
5e6e3a92
BZ		 669 } else {
670 adapter->data_sent = true;
671 return -EBUSY;
672 }
673
b60186f8 674 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
acebe8c1
ZL		 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);
5e6e3a92
BZ		 679 return -1;
680 }
681
acebe8c1
ZL		 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);
5e6e3a92
BZ		 685
686 return 0;
687}
688
689/*
690 * This function polls the card status.
691 */
692static int
693mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
694{
05889f82 695 struct sdio_mmc_card *card = adapter->card;
5e6e3a92 696 u32 tries;
ab93d4ff 697 u8 cs;
5e6e3a92
BZ		 698
699 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
05889f82 700 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
5e6e3a92
BZ		 701 break;
702 else if ((cs & bits) == bits)
703 return 0;
704
e7891ba2 705 usleep_range(10, 20);
5e6e3a92
BZ		 706 }
707
acebe8c1
ZL		 708 mwifiex_dbg(adapter, ERROR,
709 "poll card status failed, tries = %d\n", tries);
5dbd326c 710
5e6e3a92
BZ		 711 return -1;
712}
713
714/*
715 * This function reads the firmware status.
716 */
717static int
718mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
719{
05889f82
AK		 720 struct sdio_mmc_card *card = adapter->card;
721 const struct mwifiex_sdio_card_reg *reg = card->reg;
ab93d4ff 722 u8 fws0, fws1;
5e6e3a92 723
05889f82 724 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
5e6e3a92
BZ		 725 return -1;
726
05889f82 727 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
5e6e3a92
BZ		 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 */
232fde06 741static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
5e6e3a92 742{
232fde06
DD		 743 struct sdio_mmc_card *card = adapter->card;
744 struct sdio_func *func = card->func;
5e6e3a92 745
232fde06 746 sdio_claim_host(func);
554a0113 747 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
232fde06
DD		 748 sdio_release_irq(func);
749 sdio_release_host(func);
5e6e3a92
BZ		 750}
751
2cdf359a
AK		 752/*
753 * This function reads the interrupt status from card.
754 */
755static 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)) {
acebe8c1 764 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
2cdf359a
AK		 765 return;
766 }
767
554a0113 768 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
2cdf359a
AK		 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 */
acebe8c1
ZL		 777 mwifiex_dbg(adapter, INTR,
778 "int: sdio_ireg = %#x\n", sdio_ireg);
2cdf359a
AK		 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 */
791static void
792mwifiex_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) {
91442431
XH		 799 pr_err("int: func=%p card=%p adapter=%p\n",
800 func, card, card ? card->adapter : NULL);
2cdf359a
AK		 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
5e6e3a92
BZ		 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 */
818static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
819{
05889f82 820 struct sdio_mmc_card *card = adapter->card;
232fde06
DD		 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) {
acebe8c1
ZL		 829 mwifiex_dbg(adapter, ERROR,
830 "claim irq failed: ret=%d\n", ret);
232fde06
DD		 831 goto out;
832 }
05889f82 833
5e6e3a92 834 /* Simply write the mask to the register */
554a0113 835 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
232fde06
DD		 836 card->reg->host_int_enable);
837 if (ret) {
acebe8c1
ZL		 838 mwifiex_dbg(adapter, ERROR,
839 "enable host interrupt failed\n");
232fde06 840 sdio_release_irq(func);
5e6e3a92 841 }
232fde06
DD		 842
843out:
844 sdio_release_host(func);
845 return ret;
5e6e3a92
BZ		 846}
847
848/*
849 * This function sends a data buffer to the card.
850 */
851static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
852 u32 *type, u8 *buffer,
853 u32 npayload, u32 ioport)
854{
270e58e8 855 int ret;
5e6e3a92
BZ		 856 u32 nb;
857
858 if (!buffer) {
acebe8c1
ZL		 859 mwifiex_dbg(adapter, ERROR,
860 "%s: buffer is NULL\n", __func__);
5e6e3a92
BZ		 861 return -1;
862 }
863
572e8f3e 864 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
5e6e3a92
BZ		 865
866 if (ret) {
acebe8c1
ZL		 867 mwifiex_dbg(adapter, ERROR,
868 "%s: read iomem failed: %d\n", __func__,
5dbd326c 869 ret);
5e6e3a92
BZ		 870 return -1;
871 }
872
873 nb = le16_to_cpu(*(__le16 *) (buffer));
874 if (nb > npayload) {
acebe8c1
ZL		 875 mwifiex_dbg(adapter, ERROR,
876 "%s: invalid packet, nb=%d npayload=%d\n",
877 __func__, nb, npayload);
5e6e3a92
BZ		 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 */
893static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
894 struct mwifiex_fw_image *fw)
895{
05889f82
AK		 896 struct sdio_mmc_card *card = adapter->card;
897 const struct mwifiex_sdio_card_reg *reg = card->reg;
270e58e8 898 int ret;
5e6e3a92
BZ		 899 u8 *firmware = fw->fw_buf;
900 u32 firmware_len = fw->fw_len;
901 u32 offset = 0;
ab93d4ff 902 u8 base0, base1;
5e6e3a92
BZ		 903 u8 *fwbuf;
904 u16 len = 0;
270e58e8 905 u32 txlen, tx_blocks = 0, tries;
5e6e3a92
BZ		 906 u32 i = 0;
907
908 if (!firmware_len) {
acebe8c1
ZL		 909 mwifiex_dbg(adapter, ERROR,
910 "firmware image not found! Terminating download\n");
5e6e3a92
BZ		 911 return -1;
912 }
913
acebe8c1
ZL		 914 mwifiex_dbg(adapter, INFO,
915 "info: downloading FW image (%d bytes)\n",
916 firmware_len);
5e6e3a92
BZ		 917
918 /* Assume that the allocated buffer is 8-byte aligned */
919 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
0d2e7a5c 920 if (!fwbuf)
b53575ec 921 return -ENOMEM;
5e6e3a92 922
cb9d61e5
AN		 923 sdio_claim_host(card->func);
924
5e6e3a92
BZ		 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) {
acebe8c1
ZL		 932 mwifiex_dbg(adapter, ERROR,
933 "FW download with helper:\t"
934 "poll status timeout @ %d\n", offset);
5e6e3a92
BZ		 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++) {
05889f82 943 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
5e6e3a92
BZ		 944 &base0);
945 if (ret) {
acebe8c1
ZL		 946 mwifiex_dbg(adapter, ERROR,
947 "dev BASE0 register read failed:\t"
948 "base0=%#04X(%d). Terminating dnld\n",
949 base0, base0);
5e6e3a92
BZ		 950 goto done;
951 }
05889f82 952 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
5e6e3a92
BZ		 953 &base1);
954 if (ret) {
acebe8c1
ZL		 955 mwifiex_dbg(adapter, ERROR,
956 "dev BASE1 register read failed:\t"
957 "base1=%#04X(%d). Terminating dnld\n",
958 base1, base1);
5e6e3a92
BZ		 959 goto done;
960 }
961 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
962
963 if (len)
964 break;
965
e7891ba2 966 usleep_range(10, 20);
5e6e3a92
BZ		 967 }
968
969 if (!len) {
970 break;
971 } else if (len > MWIFIEX_UPLD_SIZE) {
acebe8c1
ZL		 972 mwifiex_dbg(adapter, ERROR,
973 "FW dnld failed @ %d, invalid length %d\n",
974 offset, len);
5e6e3a92
BZ		 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) {
acebe8c1
ZL		 984 mwifiex_dbg(adapter, ERROR,
985 "FW dnld failed @ %d, over max retry\n",
986 offset);
5e6e3a92
BZ		 987 ret = -1;
988 goto done;
989 }
acebe8c1
ZL		 990 mwifiex_dbg(adapter, ERROR,
991 "CRC indicated by the helper:\t"
992 "len = 0x%04X, txlen = %d\n", len, txlen);
5e6e3a92
BZ		 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
5dbd326c
YAP		 1004 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1005 / MWIFIEX_SDIO_BLOCK_SIZE;
5e6e3a92
BZ		 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,
572e8f3e 1013 adapter->ioport);
5e6e3a92 1014 if (ret) {
acebe8c1
ZL		 1015 mwifiex_dbg(adapter, ERROR,
1016 "FW download, write iomem (%d) failed @ %d\n",
1017 i, offset);
5e6e3a92 1018 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
acebe8c1
ZL		 1019 mwifiex_dbg(adapter, ERROR,
1020 "write CFG reg failed\n");
5e6e3a92
BZ		 1021
1022 ret = -1;
1023 goto done;
1024 }
1025
1026 offset += txlen;
1027 } while (true);
1028
cb9d61e5
AN		 1029 sdio_release_host(card->func);
1030
acebe8c1
ZL		 1031 mwifiex_dbg(adapter, MSG,
1032 "info: FW download over, size %d bytes\n", offset);
5e6e3a92
BZ		 1033
1034 ret = 0;
1035done:
1036 kfree(fwbuf);
1037 return ret;
1038}
1039
1040/*
1041 * This function checks the firmware status in card.
1042 *
1043 * The winner interface is also determined by this function.
1044 */
1045static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
d930faee 1046 u32 poll_num)
5e6e3a92 1047{
05889f82 1048 struct sdio_mmc_card *card = adapter->card;
5e6e3a92
BZ		 1049 int ret = 0;
1050 u16 firmware_stat;
1051 u32 tries;
ab93d4ff 1052 u8 winner_status;
5e6e3a92
BZ		 1053
1054 /* Wait for firmware initialization event */
1055 for (tries = 0; tries < poll_num; tries++) {
1056 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
1057 if (ret)
1058 continue;
d930faee 1059 if (firmware_stat == FIRMWARE_READY_SDIO) {
5e6e3a92
BZ		 1060 ret = 0;
1061 break;
1062 } else {
a76b20e5 1063 msleep(100);
5e6e3a92
BZ		 1064 ret = -1;
1065 }
1066 }
1067
d930faee 1068 if (ret) {
5e6e3a92 1069 if (mwifiex_read_reg
05889f82 1070 (adapter, card->reg->status_reg_0, &winner_status))
5e6e3a92
BZ		 1071 winner_status = 0;
1072
1073 if (winner_status)
d930faee 1074 adapter->winner = 0;
5e6e3a92 1075 else
d930faee 1076 adapter->winner = 1;
5e6e3a92
BZ		 1077 }
1078 return ret;
1079}
1080
92263a84
ZL		 1081/*
1082 * This function decode sdio aggreation pkt.
1083 *
1084 * Based on the the data block size and pkt_len,
1085 * skb data will be decoded to few packets.
1086 */
1087static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1088 struct sk_buff *skb)
1089{
1090 u32 total_pkt_len, pkt_len;
1091 struct sk_buff *skb_deaggr;
1092 u32 pkt_type;
1093 u16 blk_size;
1094 u8 blk_num;
1095 u8 *data;
1096
1097 data = skb->data;
1098 total_pkt_len = skb->len;
1099
1100 while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) {
1101 if (total_pkt_len < adapter->sdio_rx_block_size)
1102 break;
1103 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1104 blk_size = adapter->sdio_rx_block_size * blk_num;
1105 if (blk_size > total_pkt_len) {
acebe8c1
ZL		 1106 mwifiex_dbg(adapter, ERROR,
1107 "%s: error in blk_size,\t"
1108 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1109 __func__, blk_num, blk_size, total_pkt_len);
92263a84
ZL		 1110 break;
1111 }
1112 pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET));
1113 pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET +
1114 2));
1115 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
acebe8c1
ZL		 1116 mwifiex_dbg(adapter, ERROR,
1117 "%s: error in pkt_len,\t"
1118 "pkt_len=%d, blk_size=%d\n",
1119 __func__, pkt_len, blk_size);
92263a84
ZL		 1120 break;
1121 }
1122 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len,
1123 GFP_KERNEL | GFP_DMA);
1124 if (!skb_deaggr)
1125 break;
1126 skb_put(skb_deaggr, pkt_len);
1127 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1128 skb_pull(skb_deaggr, INTF_HEADER_LEN);
1129
1130 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1131 data += blk_size;
1132 total_pkt_len -= blk_size;
1133 }
1134}
1135
5e6e3a92
BZ		 1136/*
1137 * This function decodes a received packet.
1138 *
1139 * Based on the type, the packet is treated as either a data, or
1140 * a command response, or an event, and the correct handler
1141 * function is invoked.
1142 */
1143static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1144 struct sk_buff *skb, u32 upld_typ)
1145{
1146 u8 *cmd_buf;
d03b4aa7
AP		 1147 __le16 *curr_ptr = (__le16 *)skb->data;
1148 u16 pkt_len = le16_to_cpu(*curr_ptr);
92263a84 1149 struct mwifiex_rxinfo *rx_info;
5e6e3a92 1150
92263a84
ZL		 1151 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1152 skb_trim(skb, pkt_len);
1153 skb_pull(skb, INTF_HEADER_LEN);
1154 }
5e6e3a92
BZ		 1155
1156 switch (upld_typ) {
92263a84 1157 case MWIFIEX_TYPE_AGGR_DATA:
acebe8c1
ZL		 1158 mwifiex_dbg(adapter, INFO,
1159 "info: --- Rx: Aggr Data packet ---\n");
92263a84
ZL		 1160 rx_info = MWIFIEX_SKB_RXCB(skb);
1161 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1162 if (adapter->rx_work_enabled) {
1163 skb_queue_tail(&adapter->rx_data_q, skb);
1164 atomic_inc(&adapter->rx_pending);
1165 adapter->data_received = true;
1166 } else {
1167 mwifiex_deaggr_sdio_pkt(adapter, skb);
1168 dev_kfree_skb_any(skb);
1169 }
1170 break;
1171
5e6e3a92 1172 case MWIFIEX_TYPE_DATA:
acebe8c1
ZL		 1173 mwifiex_dbg(adapter, DATA,
1174 "info: --- Rx: Data packet ---\n");
6e251174 1175 if (adapter->rx_work_enabled) {
6e251174 1176 skb_queue_tail(&adapter->rx_data_q, skb);
6e251174
AP		 1177 adapter->data_received = true;
1178 atomic_inc(&adapter->rx_pending);
1179 } else {
1180 mwifiex_handle_rx_packet(adapter, skb);
1181 }
5e6e3a92
BZ		 1182 break;
1183
1184 case MWIFIEX_TYPE_CMD:
acebe8c1
ZL		 1185 mwifiex_dbg(adapter, CMD,
1186 "info: --- Rx: Cmd Response ---\n");
5e6e3a92
BZ		 1187 /* take care of curr_cmd = NULL case */
1188 if (!adapter->curr_cmd) {
1189 cmd_buf = adapter->upld_buf;
1190
1191 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1192 mwifiex_process_sleep_confirm_resp(adapter,
5dbd326c
YAP		 1193 skb->data,
1194 skb->len);
5e6e3a92 1195
5dbd326c
YAP		 1196 memcpy(cmd_buf, skb->data,
1197 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1198 skb->len));
5e6e3a92
BZ		 1199
1200 dev_kfree_skb_any(skb);
1201 } else {
1202 adapter->cmd_resp_received = true;
1203 adapter->curr_cmd->resp_skb = skb;
1204 }
1205 break;
1206
1207 case MWIFIEX_TYPE_EVENT:
acebe8c1
ZL		 1208 mwifiex_dbg(adapter, EVENT,
1209 "info: --- Rx: Event ---\n");
cfcd926e 1210 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
5e6e3a92 1211
5e6e3a92 1212 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
e80c81dc
AK		 1213 memcpy(adapter->event_body,
1214 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1215 skb->len);
5e6e3a92
BZ		 1216
1217 /* event cause has been saved to adapter->event_cause */
1218 adapter->event_received = true;
1219 adapter->event_skb = skb;
1220
1221 break;
1222
1223 default:
acebe8c1
ZL		 1224 mwifiex_dbg(adapter, ERROR,
1225 "unknown upload type %#x\n", upld_typ);
5e6e3a92
BZ		 1226 dev_kfree_skb_any(skb);
1227 break;
1228 }
1229
1230 return 0;
1231}
1232
1233/*
1234 * This function transfers received packets from card to driver, performing
1235 * aggregation if required.
1236 *
1237 * For data received on control port, or if aggregation is disabled, the
1238 * received buffers are uploaded as separate packets. However, if aggregation
1239 * is enabled and required, the buffers are copied onto an aggregation buffer,
1240 * provided there is space left, processed and finally uploaded.
1241 */
1242static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
960d6d08 1243 u16 rx_len, u8 port)
5e6e3a92
BZ		 1244{
1245 struct sdio_mmc_card *card = adapter->card;
1246 s32 f_do_rx_aggr = 0;
1247 s32 f_do_rx_cur = 0;
1248 s32 f_aggr_cur = 0;
2c11ab90 1249 s32 f_post_aggr_cur = 0;
5e6e3a92 1250 struct sk_buff *skb_deaggr;
960d6d08
ZL		 1251 struct sk_buff *skb = NULL;
1252 u32 pkt_len, pkt_type, mport, pind;
5e6e3a92 1253 u8 *curr_ptr;
5e6e3a92 1254
b60186f8 1255 if ((card->has_control_mask) && (port == CTRL_PORT)) {
5e6e3a92 1256 /* Read the command Resp without aggr */
acebe8c1
ZL		 1257 mwifiex_dbg(adapter, CMD,
1258 "info: %s: no aggregation for cmd\t"
1259 "response\n", __func__);
5e6e3a92
BZ		 1260
1261 f_do_rx_cur = 1;
1262 goto rx_curr_single;
1263 }
1264
1265 if (!card->mpa_rx.enabled) {
acebe8c1
ZL		 1266 mwifiex_dbg(adapter, WARN,
1267 "info: %s: rx aggregation disabled\n",
1268 __func__);
5e6e3a92
BZ		 1269
1270 f_do_rx_cur = 1;
1271 goto rx_curr_single;
1272 }
1273
b60186f8
YAP		 1274 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1275 card->reg->data_port_mask)) ||
1276 (card->has_control_mask && (card->mp_rd_bitmap &
1277 (~((u32) CTRL_PORT_MASK))))) {
5e6e3a92 1278 /* Some more data RX pending */
acebe8c1
ZL		 1279 mwifiex_dbg(adapter, INFO,
1280 "info: %s: not last packet\n", __func__);
5e6e3a92
BZ		 1281
1282 if (MP_RX_AGGR_IN_PROGRESS(card)) {
960d6d08 1283 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
5e6e3a92
BZ		 1284 f_aggr_cur = 1;
1285 } else {
1286 /* No room in Aggr buf, do rx aggr now */
1287 f_do_rx_aggr = 1;
2c11ab90 1288 f_post_aggr_cur = 1;
5e6e3a92
BZ		 1289 }
1290 } else {
1291 /* Rx aggr not in progress */
1292 f_aggr_cur = 1;
1293 }
1294
1295 } else {
1296 /* No more data RX pending */
acebe8c1
ZL		 1297 mwifiex_dbg(adapter, INFO,
1298 "info: %s: last packet\n", __func__);
5e6e3a92
BZ		 1299
1300 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1301 f_do_rx_aggr = 1;
960d6d08 1302 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
5e6e3a92
BZ		 1303 f_aggr_cur = 1;
1304 else
1305 /* No room in Aggr buf, do rx aggr now */
1306 f_do_rx_cur = 1;
1307 } else {
1308 f_do_rx_cur = 1;
1309 }
1310 }
1311
1312 if (f_aggr_cur) {
acebe8c1
ZL		 1313 mwifiex_dbg(adapter, INFO,
1314 "info: current packet aggregation\n");
5e6e3a92 1315 /* Curr pkt can be aggregated */
960d6d08 1316 mp_rx_aggr_setup(card, rx_len, port);
5e6e3a92
BZ		 1317
1318 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
c23b7c8f 1319 mp_rx_aggr_port_limit_reached(card)) {
acebe8c1
ZL		 1320 mwifiex_dbg(adapter, INFO,
1321 "info: %s: aggregated packet\t"
1322 "limit reached\n", __func__);
5e6e3a92
BZ		 1323 /* No more pkts allowed in Aggr buf, rx it */
1324 f_do_rx_aggr = 1;
1325 }
1326 }
1327
1328 if (f_do_rx_aggr) {
1329 /* do aggr RX now */
acebe8c1
ZL		 1330 mwifiex_dbg(adapter, DATA,
1331 "info: do_rx_aggr: num of packets: %d\n",
1332 card->mpa_rx.pkt_cnt);
5e6e3a92 1333
b60186f8
YAP		 1334 if (card->supports_sdio_new_mode) {
1335 int i;
1336 u32 port_count;
1337
1338 for (i = 0, port_count = 0; i < card->max_ports; i++)
1339 if (card->mpa_rx.ports & BIT(i))
1340 port_count++;
1341
1342 /* Reading data from "start_port + 0" to "start_port +
1343 * port_count -1", so decrease the count by 1
1344 */
1345 port_count--;
1346 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1347 (port_count << 8)) + card->mpa_rx.start_port;
1348 } else {
1349 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1350 (card->mpa_rx.ports << 4)) +
1351 card->mpa_rx.start_port;
1352 }
0fc0d43b 1353
5e6e3a92 1354 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
0fc0d43b 1355 card->mpa_rx.buf_len, mport, 1))
17a60b48 1356 goto error;
5e6e3a92
BZ		 1357
1358 curr_ptr = card->mpa_rx.buf;
1359
1360 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
960d6d08 1361 u32 *len_arr = card->mpa_rx.len_arr;
5e6e3a92
BZ		 1362
1363 /* get curr PKT len & type */
cfcd926e
TW		 1364 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1365 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
5e6e3a92
BZ		 1366
1367 /* copy pkt to deaggr buf */
960d6d08
ZL		 1368 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1369 GFP_KERNEL |
1370 GFP_DMA);
4acaf048 1371 if (!skb_deaggr) {
acebe8c1
ZL		 1372 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1373 "drop pkt len=%d type=%d\n",
1374 pkt_len, pkt_type);
4acaf048
ZL		 1375 curr_ptr += len_arr[pind];
1376 continue;
1377 }
1378
960d6d08 1379 skb_put(skb_deaggr, len_arr[pind]);
5e6e3a92 1380
92263a84
ZL		 1381 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1382 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1383 adapter->sdio_rx_aggr_enable)) &&
960d6d08 1384 (pkt_len <= len_arr[pind])) {
5e6e3a92
BZ		 1385
1386 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1387
1388 skb_trim(skb_deaggr, pkt_len);
1389
1390 /* Process de-aggr packet */
1391 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1392 pkt_type);
1393 } else {
acebe8c1
ZL		 1394 mwifiex_dbg(adapter, ERROR,
1395 "drop wrong aggr pkt:\t"
1396 "sdio_single_port_rx_aggr=%d\t"
1397 "type=%d len=%d max_len=%d\n",
1398 adapter->sdio_rx_aggr_enable,
1399 pkt_type, pkt_len, len_arr[pind]);
5e6e3a92
BZ		 1400 dev_kfree_skb_any(skb_deaggr);
1401 }
960d6d08 1402 curr_ptr += len_arr[pind];
5e6e3a92
BZ		 1403 }
1404 MP_RX_AGGR_BUF_RESET(card);
1405 }
1406
1407rx_curr_single:
1408 if (f_do_rx_cur) {
acebe8c1
ZL		 1409 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1410 port, rx_len);
4acaf048 1411
960d6d08 1412 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
4acaf048 1413 if (!skb) {
acebe8c1
ZL		 1414 mwifiex_dbg(adapter, ERROR,
1415 "single skb allocated fail,\t"
1416 "drop pkt port=%d len=%d\n", port, rx_len);
4acaf048
ZL		 1417 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1418 card->mpa_rx.buf, rx_len,
1419 adapter->ioport + port))
1420 goto error;
1421 return 0;
1422 }
1423
960d6d08 1424 skb_put(skb, rx_len);
5e6e3a92
BZ		 1425
1426 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1427 skb->data, skb->len,
1428 adapter->ioport + port))
17a60b48 1429 goto error;
92263a84
ZL		 1430 if (!adapter->sdio_rx_aggr_enable &&
1431 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
acebe8c1
ZL		 1432 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1433 "current SDIO RX Aggr not enabled\n",
1434 pkt_type);
4acaf048
ZL		 1435 dev_kfree_skb_any(skb);
1436 return 0;
92263a84 1437 }
5e6e3a92
BZ		 1438
1439 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1440 }
2c11ab90 1441 if (f_post_aggr_cur) {
acebe8c1
ZL		 1442 mwifiex_dbg(adapter, INFO,
1443 "info: current packet aggregation\n");
2c11ab90 1444 /* Curr pkt can be aggregated */
080465f2 1445 mp_rx_aggr_setup(card, rx_len, port);
2c11ab90 1446 }
5e6e3a92
BZ		 1447
1448 return 0;
17a60b48 1449error:
4acaf048 1450 if (MP_RX_AGGR_IN_PROGRESS(card))
17a60b48 1451 MP_RX_AGGR_BUF_RESET(card);
17a60b48 1452
960d6d08 1453 if (f_do_rx_cur && skb)
17a60b48
AP		 1454 /* Single transfer pending. Free curr buff also */
1455 dev_kfree_skb_any(skb);
1456
1457 return -1;
5e6e3a92
BZ		 1458}
1459
1460/*
1461 * This function checks the current interrupt status.
1462 *
1463 * The following interrupts are checked and handled by this function -
1464 * - Data sent
1465 * - Command sent
1466 * - Packets received
1467 *
1468 * Since the firmware does not generate download ready interrupt if the
1469 * port updated is command port only, command sent interrupt checking
1470 * should be done manually, and for every SDIO interrupt.
1471 *
1472 * In case of Rx packets received, the packets are uploaded from card to
1473 * host and processed accordingly.
1474 */
1475static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1476{
1477 struct sdio_mmc_card *card = adapter->card;
05889f82 1478 const struct mwifiex_sdio_card_reg *reg = card->reg;
5e6e3a92
BZ		 1479 int ret = 0;
1480 u8 sdio_ireg;
270e58e8 1481 struct sk_buff *skb;
5e6e3a92
BZ		 1482 u8 port = CTRL_PORT;
1483 u32 len_reg_l, len_reg_u;
1484 u32 rx_blocks;
1485 u16 rx_len;
1486 unsigned long flags;
b60186f8
YAP		 1487 u32 bitmap;
1488 u8 cr;
5e6e3a92
BZ		 1489
1490 spin_lock_irqsave(&adapter->int_lock, flags);
1491 sdio_ireg = adapter->int_status;
1492 adapter->int_status = 0;
1493 spin_unlock_irqrestore(&adapter->int_lock, flags);
1494
1495 if (!sdio_ireg)
1496 return ret;
1497
b60186f8
YAP		 1498 /* Following interrupt is only for SDIO new mode */
1499 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1500 adapter->cmd_sent = false;
1501
1502 /* Following interrupt is only for SDIO new mode */
1503 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1504 u32 pkt_type;
1505
1506 /* read the len of control packet */
554a0113
AP		 1507 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1508 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
b60186f8
YAP		 1509 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1510 if (rx_len <= INTF_HEADER_LEN ||
1511 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1512 MWIFIEX_RX_DATA_BUF_SIZE)
1513 return -1;
1514 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
acebe8c1 1515 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
b60186f8 1516
62159944 1517 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
b60186f8
YAP		 1518 if (!skb)
1519 return -1;
1520
1521 skb_put(skb, rx_len);
1522
1523 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1524 skb->len, adapter->ioport |
1525 CMD_PORT_SLCT)) {
acebe8c1
ZL		 1526 mwifiex_dbg(adapter, ERROR,
1527 "%s: failed to card_to_host", __func__);
b60186f8
YAP		 1528 dev_kfree_skb_any(skb);
1529 goto term_cmd;
1530 }
1531
1532 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1533 (pkt_type != MWIFIEX_TYPE_EVENT))
acebe8c1
ZL		 1534 mwifiex_dbg(adapter, ERROR,
1535 "%s:Received wrong packet on cmd port",
1536 __func__);
b60186f8
YAP		 1537
1538 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1539 }
1540
5e6e3a92 1541 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
b60186f8
YAP		 1542 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1543 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1544 if (card->supports_sdio_new_mode) {
1545 bitmap |=
1546 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1547 bitmap |=
1548 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1549 }
1550 card->mp_wr_bitmap = bitmap;
1551
acebe8c1
ZL		 1552 mwifiex_dbg(adapter, INTR,
1553 "int: DNLD: wr_bitmap=0x%x\n",
1554 card->mp_wr_bitmap);
5e6e3a92
BZ		 1555 if (adapter->data_sent &&
1556 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
acebe8c1
ZL		 1557 mwifiex_dbg(adapter, INTR,
1558 "info: <--- Tx DONE Interrupt --->\n");
5e6e3a92
BZ		 1559 adapter->data_sent = false;
1560 }
1561 }
1562
1563 /* As firmware will not generate download ready interrupt if the port
1564 updated is command port only, cmd_sent should be done for any SDIO
1565 interrupt. */
b60186f8 1566 if (card->has_control_mask && adapter->cmd_sent) {
5e6e3a92
BZ		 1567 /* Check if firmware has attach buffer at command port and
1568 update just that in wr_bit_map. */
1569 card->mp_wr_bitmap |=
05889f82 1570 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
5e6e3a92
BZ		 1571 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1572 adapter->cmd_sent = false;
1573 }
1574
acebe8c1
ZL		 1575 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1576 adapter->cmd_sent, adapter->data_sent);
5e6e3a92 1577 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
b60186f8
YAP		 1578 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1579 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1580 if (card->supports_sdio_new_mode) {
1581 bitmap |=
1582 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1583 bitmap |=
1584 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1585 }
1586 card->mp_rd_bitmap = bitmap;
acebe8c1
ZL		 1587 mwifiex_dbg(adapter, INTR,
1588 "int: UPLD: rd_bitmap=0x%x\n",
1589 card->mp_rd_bitmap);
5e6e3a92
BZ		 1590
1591 while (true) {
1592 ret = mwifiex_get_rd_port(adapter, &port);
1593 if (ret) {
acebe8c1
ZL		 1594 mwifiex_dbg(adapter, INFO,
1595 "info: no more rd_port available\n");
5e6e3a92
BZ		 1596 break;
1597 }
05889f82
AK		 1598 len_reg_l = reg->rd_len_p0_l + (port << 1);
1599 len_reg_u = reg->rd_len_p0_u + (port << 1);
5e6e3a92
BZ		 1600 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1601 rx_len |= (u16) card->mp_regs[len_reg_l];
acebe8c1
ZL		 1602 mwifiex_dbg(adapter, INFO,
1603 "info: RX: port=%d rx_len=%u\n",
1604 port, rx_len);
5e6e3a92
BZ		 1605 rx_blocks =
1606 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1607 1) / MWIFIEX_SDIO_BLOCK_SIZE;
5dbd326c 1608 if (rx_len <= INTF_HEADER_LEN ||
e3ad3d5b
XH		 1609 (card->mpa_rx.enabled &&
1610 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1611 card->mpa_rx.buf_size))) {
acebe8c1
ZL		 1612 mwifiex_dbg(adapter, ERROR,
1613 "invalid rx_len=%d\n",
1614 rx_len);
5e6e3a92
BZ		 1615 return -1;
1616 }
5e6e3a92 1617
960d6d08 1618 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
acebe8c1
ZL		 1619 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1620 rx_len);
5e6e3a92 1621
960d6d08 1622 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
5e6e3a92 1623 port)) {
acebe8c1
ZL		 1624 mwifiex_dbg(adapter, ERROR,
1625 "card_to_host_mpa failed: int status=%#x\n",
1626 sdio_ireg);
b60186f8 1627 goto term_cmd;
5e6e3a92
BZ		 1628 }
1629 }
1630 }
1631
1632 return 0;
b60186f8
YAP		 1633
1634term_cmd:
1635 /* terminate cmd */
1636 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
acebe8c1 1637 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
b60186f8 1638 else
acebe8c1
ZL		 1639 mwifiex_dbg(adapter, INFO,
1640 "info: CFG reg val = %d\n", cr);
b60186f8
YAP		 1641
1642 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
acebe8c1
ZL		 1643 mwifiex_dbg(adapter, ERROR,
1644 "write CFG reg failed\n");
b60186f8 1645 else
acebe8c1 1646 mwifiex_dbg(adapter, INFO, "info: write success\n");
b60186f8
YAP		 1647
1648 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
acebe8c1
ZL		 1649 mwifiex_dbg(adapter, ERROR,
1650 "read CFG reg failed\n");
b60186f8 1651 else
acebe8c1
ZL		 1652 mwifiex_dbg(adapter, INFO,
1653 "info: CFG reg val =%x\n", cr);
b60186f8
YAP		 1654
1655 return -1;
5e6e3a92
BZ		 1656}
1657
1658/*
1659 * This function aggregates transmission buffers in driver and downloads
1660 * the aggregated packet to card.
1661 *
1662 * The individual packets are aggregated by copying into an aggregation
1663 * buffer and then downloaded to the card. Previous unsent packets in the
1664 * aggregation buffer are pre-copied first before new packets are added.
1665 * Aggregation is done till there is space left in the aggregation buffer,
1666 * or till new packets are available.
1667 *
1668 * The function will only download the packet to the card when aggregation
1669 * stops, otherwise it will just aggregate the packet in aggregation buffer
1670 * and return.
1671 */
1672static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
0fc0d43b 1673 u8 *payload, u32 pkt_len, u32 port,
5e6e3a92
BZ		 1674 u32 next_pkt_len)
1675{
1676 struct sdio_mmc_card *card = adapter->card;
1677 int ret = 0;
1678 s32 f_send_aggr_buf = 0;
1679 s32 f_send_cur_buf = 0;
1680 s32 f_precopy_cur_buf = 0;
1681 s32 f_postcopy_cur_buf = 0;
0fc0d43b 1682 u32 mport;
5e6e3a92 1683
b60186f8
YAP		 1684 if (!card->mpa_tx.enabled ||
1685 (card->has_control_mask && (port == CTRL_PORT)) ||
1686 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
acebe8c1
ZL		 1687 mwifiex_dbg(adapter, WARN,
1688 "info: %s: tx aggregation disabled\n",
1689 __func__);
5e6e3a92
BZ		 1690
1691 f_send_cur_buf = 1;
1692 goto tx_curr_single;
1693 }
1694
1695 if (next_pkt_len) {
1696 /* More pkt in TX queue */
acebe8c1
ZL		 1697 mwifiex_dbg(adapter, INFO,
1698 "info: %s: more packets in queue.\n",
1699 __func__);
5e6e3a92
BZ		 1700
1701 if (MP_TX_AGGR_IN_PROGRESS(card)) {
c7346c32 1702 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
5e6e3a92
BZ		 1703 f_precopy_cur_buf = 1;
1704
1705 if (!(card->mp_wr_bitmap &
5dbd326c
YAP		 1706 (1 << card->curr_wr_port)) ||
1707 !MP_TX_AGGR_BUF_HAS_ROOM(
1708 card, pkt_len + next_pkt_len))
5e6e3a92
BZ		 1709 f_send_aggr_buf = 1;
1710 } else {
1711 /* No room in Aggr buf, send it */
1712 f_send_aggr_buf = 1;
1713
c7346c32 1714 if (!(card->mp_wr_bitmap &
5e6e3a92
BZ		 1715 (1 << card->curr_wr_port)))
1716 f_send_cur_buf = 1;
1717 else
1718 f_postcopy_cur_buf = 1;
1719 }
1720 } else {
5dbd326c
YAP		 1721 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1722 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
5e6e3a92
BZ		 1723 f_precopy_cur_buf = 1;
1724 else
1725 f_send_cur_buf = 1;
1726 }
1727 } else {
1728 /* Last pkt in TX queue */
acebe8c1
ZL		 1729 mwifiex_dbg(adapter, INFO,
1730 "info: %s: Last packet in Tx Queue.\n",
1731 __func__);
5e6e3a92
BZ		 1732
1733 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1734 /* some packs in Aggr buf already */
1735 f_send_aggr_buf = 1;
1736
1737 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1738 f_precopy_cur_buf = 1;
1739 else
1740 /* No room in Aggr buf, send it */
1741 f_send_cur_buf = 1;
1742 } else {
1743 f_send_cur_buf = 1;
1744 }
1745 }
1746
1747 if (f_precopy_cur_buf) {
acebe8c1
ZL		 1748 mwifiex_dbg(adapter, DATA,
1749 "data: %s: precopy current buffer\n",
1750 __func__);
5e6e3a92
BZ		 1751 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1752
1753 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
c23b7c8f 1754 mp_tx_aggr_port_limit_reached(card))
5e6e3a92
BZ		 1755 /* No more pkts allowed in Aggr buf, send it */
1756 f_send_aggr_buf = 1;
1757 }
1758
1759 if (f_send_aggr_buf) {
acebe8c1
ZL		 1760 mwifiex_dbg(adapter, DATA,
1761 "data: %s: send aggr buffer: %d %d\n",
1762 __func__, card->mpa_tx.start_port,
1763 card->mpa_tx.ports);
b60186f8
YAP		 1764 if (card->supports_sdio_new_mode) {
1765 u32 port_count;
1766 int i;
1767
1768 for (i = 0, port_count = 0; i < card->max_ports; i++)
1769 if (card->mpa_tx.ports & BIT(i))
1770 port_count++;
1771
1772 /* Writing data from "start_port + 0" to "start_port +
1773 * port_count -1", so decrease the count by 1
1774 */
1775 port_count--;
1776 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1777 (port_count << 8)) + card->mpa_tx.start_port;
1778 } else {
1779 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1780 (card->mpa_tx.ports << 4)) +
1781 card->mpa_tx.start_port;
1782 }
1783
5e6e3a92 1784 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
0fc0d43b 1785 card->mpa_tx.buf_len, mport);
5e6e3a92
BZ		 1786
1787 MP_TX_AGGR_BUF_RESET(card);
1788 }
1789
1790tx_curr_single:
1791 if (f_send_cur_buf) {
acebe8c1
ZL		 1792 mwifiex_dbg(adapter, DATA,
1793 "data: %s: send current buffer %d\n",
1794 __func__, port);
5e6e3a92
BZ		 1795 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1796 adapter->ioport + port);
1797 }
1798
1799 if (f_postcopy_cur_buf) {
acebe8c1
ZL		 1800 mwifiex_dbg(adapter, DATA,
1801 "data: %s: postcopy current buffer\n",
1802 __func__);
5e6e3a92
BZ		 1803 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1804 }
1805
1806 return ret;
1807}
1808
1809/*
1810 * This function downloads data from driver to card.
1811 *
1812 * Both commands and data packets are transferred to the card by this
1813 * function.
1814 *
1815 * This function adds the SDIO specific header to the front of the buffer
1816 * before transferring. The header contains the length of the packet and
1817 * the type. The firmware handles the packets based upon this set type.
1818 */
1819static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
d930faee 1820 u8 type, struct sk_buff *skb,
5e6e3a92
BZ		 1821 struct mwifiex_tx_param *tx_param)
1822{
1823 struct sdio_mmc_card *card = adapter->card;
270e58e8 1824 int ret;
5e6e3a92
BZ		 1825 u32 buf_block_len;
1826 u32 blk_size;
0fc0d43b 1827 u32 port = CTRL_PORT;
d930faee
AK		 1828 u8 *payload = (u8 *)skb->data;
1829 u32 pkt_len = skb->len;
5e6e3a92
BZ		 1830
1831 /* Allocate buffer and copy payload */
1832 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1833 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
83e612f6
TM		 1834 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1835 *(__le16 *)&payload[2] = cpu_to_le16(type);
5e6e3a92
BZ		 1836
1837 /*
1838 * This is SDIO specific header
1839 * u16 length,
1840 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1841 * MWIFIEX_TYPE_EVENT = 3)
1842 */
1843 if (type == MWIFIEX_TYPE_DATA) {
1844 ret = mwifiex_get_wr_port_data(adapter, &port);
1845 if (ret) {
acebe8c1
ZL		 1846 mwifiex_dbg(adapter, ERROR,
1847 "%s: no wr_port available\n",
1848 __func__);
5e6e3a92
BZ		 1849 return ret;
1850 }
1851 } else {
1852 adapter->cmd_sent = true;
1853 /* Type must be MWIFIEX_TYPE_CMD */
1854
1855 if (pkt_len <= INTF_HEADER_LEN ||
1856 pkt_len > MWIFIEX_UPLD_SIZE)
acebe8c1
ZL		 1857 mwifiex_dbg(adapter, ERROR,
1858 "%s: payload=%p, nb=%d\n",
1859 __func__, payload, pkt_len);
b60186f8
YAP		 1860
1861 if (card->supports_sdio_new_mode)
1862 port = CMD_PORT_SLCT;
5e6e3a92
BZ		 1863 }
1864
1865 /* Transfer data to card */
1866 pkt_len = buf_block_len * blk_size;
1867
1868 if (tx_param)
1869 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
5dbd326c
YAP		 1870 port, tx_param->next_pkt_len
1871 );
5e6e3a92
BZ		 1872 else
1873 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
5dbd326c 1874 port, 0);
5e6e3a92
BZ		 1875
1876 if (ret) {
1877 if (type == MWIFIEX_TYPE_CMD)
1878 adapter->cmd_sent = false;
bb71d01a 1879 if (type == MWIFIEX_TYPE_DATA) {
5e6e3a92 1880 adapter->data_sent = false;
bb71d01a
AP		 1881 /* restore curr_wr_port in error cases */
1882 card->curr_wr_port = port;
1883 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1884 }
5e6e3a92
BZ		 1885 } else {
1886 if (type == MWIFIEX_TYPE_DATA) {
1887 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1888 adapter->data_sent = true;
1889 else
1890 adapter->data_sent = false;
1891 }
1892 }
1893
1894 return ret;
1895}
1896
1897/*
1898 * This function allocates the MPA Tx and Rx buffers.
1899 */
1900static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1901 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1902{
1903 struct sdio_mmc_card *card = adapter->card;
92263a84 1904 u32 rx_buf_size;
5e6e3a92
BZ		 1905 int ret = 0;
1906
1907 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1908 if (!card->mpa_tx.buf) {
5e6e3a92
BZ		 1909 ret = -1;
1910 goto error;
1911 }
1912
1913 card->mpa_tx.buf_size = mpa_tx_buf_size;
1914
92263a84
ZL		 1915 rx_buf_size = max_t(u32, mpa_rx_buf_size,
1916 (u32)SDIO_MAX_AGGR_BUF_SIZE);
1917 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
5e6e3a92 1918 if (!card->mpa_rx.buf) {
5e6e3a92
BZ		 1919 ret = -1;
1920 goto error;
1921 }
1922
92263a84 1923 card->mpa_rx.buf_size = rx_buf_size;
5e6e3a92
BZ		 1924
1925error:
1926 if (ret) {
1927 kfree(card->mpa_tx.buf);
1928 kfree(card->mpa_rx.buf);
e3ad3d5b
XH		 1929 card->mpa_tx.buf_size = 0;
1930 card->mpa_rx.buf_size = 0;
5e6e3a92
BZ		 1931 }
1932
1933 return ret;
1934}
1935
1936/*
1937 * This function unregisters the SDIO device.
1938 *
1939 * The SDIO IRQ is released, the function is disabled and driver
1940 * data is set to null.
1941 */
1942static void
1943mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1944{
1945 struct sdio_mmc_card *card = adapter->card;
1946
1947 if (adapter->card) {
5e6e3a92 1948 sdio_claim_host(card->func);
5e6e3a92
BZ		 1949 sdio_disable_func(card->func);
1950 sdio_release_host(card->func);
5e6e3a92
BZ		 1951 }
1952}
1953
1954/*
1955 * This function registers the SDIO device.
1956 *
1957 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1958 */
1959static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1960{
232fde06 1961 int ret;
5e6e3a92
BZ		 1962 struct sdio_mmc_card *card = adapter->card;
1963 struct sdio_func *func = card->func;
1964
1965 /* save adapter pointer in card */
1966 card->adapter = adapter;
828cf222 1967 adapter->tx_buf_size = card->tx_buf_size;
5e6e3a92
BZ		 1968
1969 sdio_claim_host(func);
1970
5e6e3a92
BZ		 1971 /* Set block size */
1972 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
232fde06 1973 sdio_release_host(func);
5e6e3a92 1974 if (ret) {
acebe8c1
ZL		 1975 mwifiex_dbg(adapter, ERROR,
1976 "cannot set SDIO block size\n");
232fde06 1977 return ret;
5e6e3a92
BZ		 1978 }
1979
5e6e3a92
BZ		 1980
1981 adapter->dev = &func->dev;
e3bea1c8 1982
05889f82 1983 strcpy(adapter->fw_name, card->firmware);
eee7f196
ZL		 1984 if (card->fw_dump_enh) {
1985 adapter->mem_type_mapping_tbl = generic_mem_type_map;
1986 adapter->num_mem_types = 1;
1987 } else {
1988 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
1989 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
1990 }
5e6e3a92
BZ		 1991
1992 return 0;
5e6e3a92
BZ		 1993}
1994
1995/*
1996 * This function initializes the SDIO driver.
1997 *
1998 * The following initializations steps are followed -
1999 * - Read the Host interrupt status register to acknowledge
2000 * the first interrupt got from bootloader
2001 * - Disable host interrupt mask register
2002 * - Get SDIO port
5e6e3a92
BZ		 2003 * - Initialize SDIO variables in card
2004 * - Allocate MP registers
2005 * - Allocate MPA Tx and Rx buffers
2006 */
2007static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2008{
2009 struct sdio_mmc_card *card = adapter->card;
05889f82 2010 const struct mwifiex_sdio_card_reg *reg = card->reg;
5e6e3a92 2011 int ret;
ab93d4ff 2012 u8 sdio_ireg;
5e6e3a92 2013
3c59e328
AK		 2014 sdio_set_drvdata(card->func, card);
2015
5e6e3a92 2016 /*
554a0113 2017 * Read the host_int_status_reg for ACK the first interrupt got
5e6e3a92
BZ		 2018 * from the bootloader. If we don't do this we get a interrupt
2019 * as soon as we register the irq.
2020 */
554a0113 2021 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
5e6e3a92 2022
5e6e3a92
BZ		 2023 /* Get SDIO ioport */
2024 mwifiex_init_sdio_ioport(adapter);
2025
5e6e3a92
BZ		 2026 /* Initialize SDIO variables in card */
2027 card->mp_rd_bitmap = 0;
2028 card->mp_wr_bitmap = 0;
05889f82
AK		 2029 card->curr_rd_port = reg->start_rd_port;
2030 card->curr_wr_port = reg->start_wr_port;
5e6e3a92 2031
05889f82 2032 card->mp_data_port_mask = reg->data_port_mask;
5e6e3a92
BZ		 2033
2034 card->mpa_tx.buf_len = 0;
2035 card->mpa_tx.pkt_cnt = 0;
2036 card->mpa_tx.start_port = 0;
2037
7d7ab022 2038 card->mpa_tx.enabled = 1;
05889f82 2039 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
5e6e3a92
BZ		 2040
2041 card->mpa_rx.buf_len = 0;
2042 card->mpa_rx.pkt_cnt = 0;
2043 card->mpa_rx.start_port = 0;
2044
7d7ab022 2045 card->mpa_rx.enabled = 1;
05889f82 2046 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
5e6e3a92
BZ		 2047
2048 /* Allocate buffers for SDIO MP-A */
05889f82 2049 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
0d2e7a5c 2050 if (!card->mp_regs)
b53575ec 2051 return -ENOMEM;
5e6e3a92 2052
c23b7c8f
AK		 2053 /* Allocate skb pointer buffers */
2054 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
2055 card->mp_agg_pkt_limit, GFP_KERNEL);
50f85e22
IY		 2056 if (!card->mpa_rx.skb_arr) {
2057 kfree(card->mp_regs);
2058 return -ENOMEM;
2059 }
2060
c23b7c8f
AK		 2061 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
2062 card->mp_agg_pkt_limit, GFP_KERNEL);
50f85e22
IY		 2063 if (!card->mpa_rx.len_arr) {
2064 kfree(card->mp_regs);
2065 kfree(card->mpa_rx.skb_arr);
2066 return -ENOMEM;
2067 }
2068
5e6e3a92 2069 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
e1aa93a4
AK		 2070 card->mp_tx_agg_buf_size,
2071 card->mp_rx_agg_buf_size);
9a9053c3
XH		 2072
2073 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2074 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2075 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2076 /* Disable rx single port aggregation */
2077 adapter->host_disable_sdio_rx_aggr = true;
2078
2079 ret = mwifiex_alloc_sdio_mpa_buffers
2080 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2081 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2082 if (ret) {
2083 /* Disable multi port aggregation */
2084 card->mpa_tx.enabled = 0;
2085 card->mpa_rx.enabled = 0;
2086 }
5e6e3a92
BZ		 2087 }
2088
b4e8aebb 2089 adapter->auto_tdls = card->can_auto_tdls;
1fe192d8 2090 adapter->ext_scan = card->can_ext_scan;
9a9053c3 2091 return 0;
5e6e3a92
BZ		 2092}
2093
2094/*
2095 * This function resets the MPA Tx and Rx buffers.
2096 */
2097static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2098{
2099 struct sdio_mmc_card *card = adapter->card;
2100
2101 MP_TX_AGGR_BUF_RESET(card);
2102 MP_RX_AGGR_BUF_RESET(card);
2103}
2104
2105/*
2106 * This function cleans up the allocated card buffers.
2107 *
2108 * The following are freed by this function -
2109 * - MP registers
2110 * - MPA Tx buffer
2111 * - MPA Rx buffer
2112 */
2113static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2114{
2115 struct sdio_mmc_card *card = adapter->card;
2116
2117 kfree(card->mp_regs);
c23b7c8f
AK		 2118 kfree(card->mpa_rx.skb_arr);
2119 kfree(card->mpa_rx.len_arr);
5e6e3a92
BZ		 2120 kfree(card->mpa_tx.buf);
2121 kfree(card->mpa_rx.buf);
3c59e328
AK		 2122 sdio_set_drvdata(card->func, NULL);
2123 kfree(card);
5e6e3a92
BZ		 2124}
2125
2126/*
2127 * This function updates the MP end port in card.
2128 */
2129static void
2130mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2131{
2132 struct sdio_mmc_card *card = adapter->card;
05889f82 2133 const struct mwifiex_sdio_card_reg *reg = card->reg;
5e6e3a92
BZ		 2134 int i;
2135
2136 card->mp_end_port = port;
2137
05889f82 2138 card->mp_data_port_mask = reg->data_port_mask;
5e6e3a92 2139
b60186f8
YAP		 2140 if (reg->start_wr_port) {
2141 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2142 card->mp_data_port_mask &=
2143 ~(1 << (card->max_ports - i));
2144 }
5e6e3a92 2145
05889f82 2146 card->curr_wr_port = reg->start_wr_port;
5e6e3a92 2147
acebe8c1
ZL		 2148 mwifiex_dbg(adapter, CMD,
2149 "cmd: mp_end_port %d, data port mask 0x%x\n",
2150 port, card->mp_data_port_mask);
5e6e3a92
BZ		 2151}
2152
b4336a28
AF		 2153static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
2154{
2155 struct sdio_func *func = card->func;
2156 const struct sdio_device_id *device_id = card->device_id;
2157
2158 /* TODO mmc_hw_reset does not require destroying and re-probing the
2159 * whole adapter. Hence there was no need to for this rube-goldberg
2160 * design to reload the fw from an external workqueue. If we don't
2161 * destroy the adapter we could reload the fw from
2162 * mwifiex_main_work_queue directly.
2163 * The real difficulty with fw reset is to restore all the user
2164 * settings applied through ioctl. By destroying and recreating the
2165 * adapter, we take the easy way out, since we rely on user space to
2166 * restore them. We assume that user space will treat the new
2167 * incarnation of the adapter(interfaces) as if they had been just
2168 * discovered and initializes them from scratch.
2169 */
2170
2171 mwifiex_sdio_remove(func);
2172
2173 /* power cycle the adapter */
2174 sdio_claim_host(func);
2175 mmc_hw_reset(func->card->host);
2176 sdio_release_host(func);
2177
2178 mwifiex_sdio_probe(func, device_id);
2179}
2180
2f5872b6 2181static struct mwifiex_adapter *save_adapter;
088df424 2182static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
d31ab357 2183{
088df424 2184 struct sdio_mmc_card *card = adapter->card;
d31ab357 2185
b4336a28
AF		 2186 /* TODO card pointer is unprotected. If the adapter is removed
2187 * physically, sdio core might trigger mwifiex_sdio_remove, before this
2188 * workqueue is run, which will destroy the adapter struct. When this
2189 * workqueue eventually exceutes it will dereference an invalid adapter
2190 * pointer
2191 */
2192 mwifiex_recreate_adapter(card);
d31ab357 2193}
8915d738 2194
54881c6b
AK		 2195/* This function read/write firmware */
2196static enum
2197rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2198 u8 doneflag)
2199{
2200 struct sdio_mmc_card *card = adapter->card;
2201 int ret, tries;
2202 u8 ctrl_data = 0;
2203
eee7f196
ZL		 2204 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2205 card->reg->fw_dump_ctrl, &ret);
54881c6b 2206 if (ret) {
acebe8c1 2207 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
54881c6b
AK		 2208 return RDWR_STATUS_FAILURE;
2209 }
2210 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2211 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2212 &ret);
2213 if (ret) {
acebe8c1 2214 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
54881c6b
AK		 2215 return RDWR_STATUS_FAILURE;
2216 }
2217 if (ctrl_data == FW_DUMP_DONE)
2218 break;
2219 if (doneflag && ctrl_data == doneflag)
2220 return RDWR_STATUS_DONE;
eee7f196 2221 if (ctrl_data != card->reg->fw_dump_host_ready) {
acebe8c1 2222 mwifiex_dbg(adapter, WARN,
eee7f196
ZL		 2223 "The ctrl reg was changed, re-try again\n");
2224 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
54881c6b
AK		 2225 card->reg->fw_dump_ctrl, &ret);
2226 if (ret) {
acebe8c1 2227 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
54881c6b
AK		 2228 return RDWR_STATUS_FAILURE;
2229 }
2230 }
2231 usleep_range(100, 200);
2232 }
eee7f196 2233 if (ctrl_data == card->reg->fw_dump_host_ready) {
acebe8c1
ZL		 2234 mwifiex_dbg(adapter, ERROR,
2235 "Fail to pull ctrl_data\n");
54881c6b
AK		 2236 return RDWR_STATUS_FAILURE;
2237 }
2238
2239 return RDWR_STATUS_SUCCESS;
2240}
2241
2242/* This function dump firmware memory to file */
fc697159 2243static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
54881c6b 2244{
54881c6b
AK		 2245 struct sdio_mmc_card *card = adapter->card;
2246 int ret = 0;
2247 unsigned int reg, reg_start, reg_end;
2248 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
54881c6b
AK		 2249 enum rdwr_status stat;
2250 u32 memory_size;
54881c6b 2251
b4e8aebb 2252 if (!card->can_dump_fw)
54881c6b
AK		 2253 return;
2254
2255 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2256 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2257
2258 if (entry->mem_ptr) {
2259 vfree(entry->mem_ptr);
2260 entry->mem_ptr = NULL;
2261 }
2262 entry->mem_size = 0;
2263 }
2264
2265 mwifiex_pm_wakeup_card(adapter);
2266 sdio_claim_host(card->func);
2267
acebe8c1 2268 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
54881c6b
AK		 2269
2270 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2271 if (stat == RDWR_STATUS_FAILURE)
2272 goto done;
2273
2274 reg = card->reg->fw_dump_start;
2275 /* Read the number of the memories which will dump */
2276 dump_num = sdio_readb(card->func, reg, &ret);
2277 if (ret) {
acebe8c1 2278 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
54881c6b
AK		 2279 goto done;
2280 }
2281
2282 /* Read the length of every memory which will dump */
2283 for (idx = 0; idx < dump_num; idx++) {
2284 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2285
2286 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2287 if (stat == RDWR_STATUS_FAILURE)
2288 goto done;
2289
2290 memory_size = 0;
2291 reg = card->reg->fw_dump_start;
2292 for (i = 0; i < 4; i++) {
2293 read_reg = sdio_readb(card->func, reg, &ret);
2294 if (ret) {
acebe8c1 2295 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
54881c6b
AK		 2296 goto done;
2297 }
2298 memory_size |= (read_reg << i*8);
2299 reg++;
2300 }
2301
2302 if (memory_size == 0) {
acebe8c1 2303 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
e065ddb8
AK		 2304 ret = mwifiex_write_reg(adapter,
2305 card->reg->fw_dump_ctrl,
2306 FW_DUMP_READ_DONE);
2307 if (ret) {
2308 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2309 return;
2310 }
54881c6b
AK		 2311 break;
2312 }
2313
acebe8c1
ZL		 2314 mwifiex_dbg(adapter, DUMP,
2315 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
54881c6b
AK		 2316 entry->mem_ptr = vmalloc(memory_size + 1);
2317 entry->mem_size = memory_size;
2318 if (!entry->mem_ptr) {
acebe8c1
ZL		 2319 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2320 entry->mem_name);
54881c6b
AK		 2321 goto done;
2322 }
2323 dbg_ptr = entry->mem_ptr;
2324 end_ptr = dbg_ptr + memory_size;
2325
2326 doneflag = entry->done_flag;
acebe8c1
ZL		 2327 mwifiex_dbg(adapter, DUMP,
2328 "Start %s output, please wait...\n",
2329 entry->mem_name);
54881c6b
AK		 2330
2331 do {
2332 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2333 if (stat == RDWR_STATUS_FAILURE)
2334 goto done;
2335
2336 reg_start = card->reg->fw_dump_start;
2337 reg_end = card->reg->fw_dump_end;
2338 for (reg = reg_start; reg <= reg_end; reg++) {
2339 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2340 if (ret) {
acebe8c1
ZL		 2341 mwifiex_dbg(adapter, ERROR,
2342 "SDIO read err\n");
54881c6b
AK		 2343 goto done;
2344 }
2345 if (dbg_ptr < end_ptr)
2346 dbg_ptr++;
2347 else
acebe8c1
ZL		 2348 mwifiex_dbg(adapter, ERROR,
2349 "Allocated buf not enough\n");
54881c6b
AK		 2350 }
2351
2352 if (stat != RDWR_STATUS_DONE)
2353 continue;
2354
acebe8c1
ZL		 2355 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2356 entry->mem_name, dbg_ptr - entry->mem_ptr);
54881c6b
AK		 2357 break;
2358 } while (1);
2359 }
acebe8c1 2360 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
54881c6b 2361
54881c6b
AK		 2362done:
2363 sdio_release_host(card->func);
54881c6b
AK		 2364}
2365
eee7f196
ZL		 2366static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2367{
2368 struct sdio_mmc_card *card = adapter->card;
2369 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2370 unsigned int reg, reg_start, reg_end;
2371 u8 start_flag = 0, done_flag = 0;
2372 u8 *dbg_ptr, *end_ptr;
2373 enum rdwr_status stat;
2374 int ret = -1, tries;
2375
2376 if (!card->fw_dump_enh)
2377 return;
2378
2379 if (entry->mem_ptr) {
2380 vfree(entry->mem_ptr);
2381 entry->mem_ptr = NULL;
2382 }
2383 entry->mem_size = 0;
2384
2385 mwifiex_pm_wakeup_card(adapter);
2386 sdio_claim_host(card->func);
2387
2388 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2389
2390 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2391 if (stat == RDWR_STATUS_FAILURE)
2392 goto done;
2393
2394 reg_start = card->reg->fw_dump_start;
2395 reg_end = card->reg->fw_dump_end;
2396 for (reg = reg_start; reg <= reg_end; reg++) {
2397 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2398 start_flag = sdio_readb(card->func, reg, &ret);
2399 if (ret) {
2400 mwifiex_dbg(adapter, ERROR,
2401 "SDIO read err\n");
2402 goto done;
2403 }
2404 if (start_flag == 0)
2405 break;
2406 if (tries == MAX_POLL_TRIES) {
2407 mwifiex_dbg(adapter, ERROR,
2408 "FW not ready to dump\n");
2409 ret = -1;
2410 goto done;
2411 }
2412 }
2413 usleep_range(100, 200);
2414 }
2415
2416 entry->mem_ptr = vmalloc(0xf0000 + 1);
2417 if (!entry->mem_ptr) {
2418 ret = -1;
2419 goto done;
2420 }
2421 dbg_ptr = entry->mem_ptr;
2422 entry->mem_size = 0xf0000;
2423 end_ptr = dbg_ptr + entry->mem_size;
2424
2425 done_flag = entry->done_flag;
2426 mwifiex_dbg(adapter, DUMP,
2427 "Start %s output, please wait...\n", entry->mem_name);
2428
2429 while (true) {
2430 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2431 if (stat == RDWR_STATUS_FAILURE)
2432 goto done;
2433 for (reg = reg_start; reg <= reg_end; reg++) {
2434 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2435 if (ret) {
2436 mwifiex_dbg(adapter, ERROR,
2437 "SDIO read err\n");
2438 goto done;
2439 }
2440 dbg_ptr++;
2441 if (dbg_ptr >= end_ptr) {
2442 u8 *tmp_ptr;
2443
2444 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2445 if (!tmp_ptr)
2446 goto done;
2447
2448 memcpy(tmp_ptr, entry->mem_ptr,
2449 entry->mem_size);
2450 vfree(entry->mem_ptr);
2451 entry->mem_ptr = tmp_ptr;
2452 tmp_ptr = NULL;
2453 dbg_ptr = entry->mem_ptr + entry->mem_size;
2454 entry->mem_size += 0x4000;
2455 end_ptr = entry->mem_ptr + entry->mem_size;
2456 }
2457 }
2458 if (stat == RDWR_STATUS_DONE) {
2459 entry->mem_size = dbg_ptr - entry->mem_ptr;
2460 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2461 entry->mem_name, entry->mem_size);
2462 ret = 0;
2463 break;
2464 }
2465 }
2466 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2467
2468done:
2469 if (ret) {
2470 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2471 if (entry->mem_ptr) {
2472 vfree(entry->mem_ptr);
2473 entry->mem_ptr = NULL;
2474 }
2475 entry->mem_size = 0;
2476 }
2477 sdio_release_host(card->func);
2478}
2479
fc697159
AK		 2480static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2481{
eee7f196
ZL		 2482 struct sdio_mmc_card *card = adapter->card;
2483
fc697159 2484 mwifiex_drv_info_dump(adapter);
eee7f196
ZL		 2485 if (card->fw_dump_enh)
2486 mwifiex_sdio_generic_fw_dump(adapter);
2487 else
2488 mwifiex_sdio_fw_dump(adapter);
57670ee8 2489 mwifiex_upload_device_dump(adapter);
fc697159
AK		 2490}
2491
8915d738
AK		 2492static void mwifiex_sdio_work(struct work_struct *work)
2493{
fc697159 2494 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2f5872b6 2495 &iface_work_flags))
fc697159 2496 mwifiex_sdio_device_dump_work(save_adapter);
2f5872b6
MH		 2497 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2498 &iface_work_flags))
2499 mwifiex_sdio_card_reset_work(save_adapter);
8915d738 2500}
d31ab357 2501
2f5872b6 2502static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
d31ab357
AK		 2503/* This function resets the card */
2504static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2505{
2f5872b6
MH		 2506 save_adapter = adapter;
2507 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags))
8915d738
AK		 2508 return;
2509
2f5872b6 2510 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
8915d738 2511
2f5872b6 2512 schedule_work(&sdio_work);
d31ab357
AK		 2513}
2514
54881c6b 2515/* This function dumps FW information */
fc697159 2516static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
54881c6b 2517{
2f5872b6 2518 save_adapter = adapter;
fc697159 2519 if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags))
54881c6b
AK		 2520 return;
2521
fc697159 2522 set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
2f5872b6 2523 schedule_work(&sdio_work);
54881c6b
AK		 2524}
2525
809c6ea8
XH		 2526/* Function to dump SDIO function registers and SDIO scratch registers in case
2527 * of FW crash
2528 */
2529static int
2530mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2531{
2532 char *p = drv_buf;
2533 struct sdio_mmc_card *cardp = adapter->card;
2534 int ret = 0;
2535 u8 count, func, data, index = 0, size = 0;
2536 u8 reg, reg_start, reg_end;
2537 char buf[256], *ptr;
2538
2539 if (!p)
2540 return 0;
2541
9cc0dbf0 2542 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
809c6ea8
XH		 2543
2544 mwifiex_pm_wakeup_card(adapter);
2545
2546 sdio_claim_host(cardp->func);
2547
2548 for (count = 0; count < 5; count++) {
2549 memset(buf, 0, sizeof(buf));
2550 ptr = buf;
2551
2552 switch (count) {
2553 case 0:
2554 /* Read the registers of SDIO function0 */
2555 func = count;
2556 reg_start = 0;
2557 reg_end = 9;
2558 break;
2559 case 1:
2560 /* Read the registers of SDIO function1 */
2561 func = count;
2562 reg_start = cardp->reg->func1_dump_reg_start;
2563 reg_end = cardp->reg->func1_dump_reg_end;
2564 break;
2565 case 2:
2566 index = 0;
2567 func = 1;
2568 reg_start = cardp->reg->func1_spec_reg_table[index++];
2569 size = cardp->reg->func1_spec_reg_num;
2570 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2571 break;
2572 default:
2573 /* Read the scratch registers of SDIO function1 */
2574 if (count == 4)
2575 mdelay(100);
2576 func = 1;
2577 reg_start = cardp->reg->func1_scratch_reg;
2578 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2579 }
2580
2581 if (count != 2)
2582 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2583 func, reg_start, reg_end);
2584 else
2585 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2586
2587 for (reg = reg_start; reg <= reg_end;) {
2588 if (func == 0)
2589 data = sdio_f0_readb(cardp->func, reg, &ret);
2590 else
2591 data = sdio_readb(cardp->func, reg, &ret);
2592
2593 if (count == 2)
2594 ptr += sprintf(ptr, "(%#x) ", reg);
2595 if (!ret) {
2596 ptr += sprintf(ptr, "%02x ", data);
2597 } else {
2598 ptr += sprintf(ptr, "ERR");
2599 break;
2600 }
2601
2602 if (count == 2 && reg < reg_end)
2603 reg = cardp->reg->func1_spec_reg_table[index++];
2604 else
2605 reg++;
2606 }
2607
acebe8c1 2608 mwifiex_dbg(adapter, MSG, "%s\n", buf);
809c6ea8
XH		 2609 p += sprintf(p, "%s\n", buf);
2610 }
2611
2612 sdio_release_host(cardp->func);
2613
9cc0dbf0 2614 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
809c6ea8
XH		 2615
2616 return p - drv_buf;
2617}
2618
5e6e3a92
BZ		 2619static struct mwifiex_if_ops sdio_ops = {
2620 .init_if = mwifiex_init_sdio,
2621 .cleanup_if = mwifiex_cleanup_sdio,
2622 .check_fw_status = mwifiex_check_fw_status,
2623 .prog_fw = mwifiex_prog_fw_w_helper,
2624 .register_dev = mwifiex_register_dev,
2625 .unregister_dev = mwifiex_unregister_dev,
2626 .enable_int = mwifiex_sdio_enable_host_int,
232fde06 2627 .disable_int = mwifiex_sdio_disable_host_int,
5e6e3a92
BZ		 2628 .process_int_status = mwifiex_process_int_status,
2629 .host_to_card = mwifiex_sdio_host_to_card,
2630 .wakeup = mwifiex_pm_wakeup_card,
2631 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2632
2633 /* SDIO specific */
2634 .update_mp_end_port = mwifiex_update_mp_end_port,
2635 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
d930faee
AK		 2636 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2637 .event_complete = mwifiex_sdio_event_complete,
d31ab357 2638 .card_reset = mwifiex_sdio_card_reset,
809c6ea8 2639 .reg_dump = mwifiex_sdio_reg_dump,
fc697159 2640 .device_dump = mwifiex_sdio_device_dump,
92263a84 2641 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
5e6e3a92
BZ		 2642};
2643
2644/*
2645 * This function initializes the SDIO driver.
2646 *
2647 * This initiates the semaphore and registers the device with
2648 * SDIO bus.
2649 */
2650static int
2651mwifiex_sdio_init_module(void)
2652{
5e6e3a92
BZ		 2653 sema_init(&add_remove_card_sem, 1);
2654
287546df
AK		 2655 /* Clear the flag in case user removes the card. */
2656 user_rmmod = 0;
2657
636c4598 2658 return sdio_register_driver(&mwifiex_sdio);
5e6e3a92
BZ		 2659}
2660
2661/*
2662 * This function cleans up the SDIO driver.
2663 *
2664 * The following major steps are followed for cleanup -
2665 * - Resume the device if its suspended
2666 * - Disconnect the device if connected
2667 * - Shutdown the firmware
2668 * - Unregister the device from SDIO bus.
2669 */
2670static void
2671mwifiex_sdio_cleanup_module(void)
2672{
287546df
AK		 2673 if (!down_interruptible(&add_remove_card_sem))
2674 up(&add_remove_card_sem);
5e6e3a92 2675
287546df
AK		 2676 /* Set the flag as user is removing this module. */
2677 user_rmmod = 1;
2f5872b6 2678 cancel_work_sync(&sdio_work);
5e6e3a92 2679
5e6e3a92
BZ		 2680 sdio_unregister_driver(&mwifiex_sdio);
2681}
2682
2683module_init(mwifiex_sdio_init_module);
2684module_exit(mwifiex_sdio_cleanup_module);
2685
2686MODULE_AUTHOR("Marvell International Ltd.");
2687MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2688MODULE_VERSION(SDIO_VERSION);
2689MODULE_LICENSE("GPL v2");
98e6b9df 2690MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
e3bea1c8
BZ		 2691MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2692MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
b60186f8 2693MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
030bb75a 2694MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);
6d85ef00 2695MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME);
Linux kernel - Deliverables
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