1 /*
2 * Copyright (c) 2014 Redpine Signals Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 *
16 */
17
18 #include <linux/module.h>
19 #include "rsi_sdio.h"
20 #include "rsi_common.h"
21 #include "rsi_coex.h"
22 #include "rsi_hal.h"
23
24 /* Default operating mode is wlan STA + BT */
25 static u16 dev_oper_mode = DEV_OPMODE_STA_BT_DUAL;
26 module_param(dev_oper_mode, ushort, 0444);
27 MODULE_PARM_DESC(dev_oper_mode, DEV_OPMODE_PARAM_DESC);
28
29 /**
30 * rsi_sdio_set_cmd52_arg() - This function prepares cmd 52 read/write arg.
31 * @rw: Read/write
32 * @func: function number
33 * @raw: indicates whether to perform read after write
34 * @address: address to which to read/write
35 * @writedata: data to write
36 *
37 * Return: argument
38 */
rsi_sdio_set_cmd52_arg(bool rw,u8 func,u8 raw,u32 address,u8 writedata)39 static u32 rsi_sdio_set_cmd52_arg(bool rw,
40 u8 func,
41 u8 raw,
42 u32 address,
43 u8 writedata)
44 {
45 return ((rw & 1) << 31) | ((func & 0x7) << 28) |
46 ((raw & 1) << 27) | (1 << 26) |
47 ((address & 0x1FFFF) << 9) | (1 << 8) |
48 (writedata & 0xFF);
49 }
50
51 /**
52 * rsi_cmd52writebyte() - This function issues cmd52 byte write onto the card.
53 * @card: Pointer to the mmc_card.
54 * @address: Address to write.
55 * @byte: Data to write.
56 *
57 * Return: Write status.
58 */
rsi_cmd52writebyte(struct mmc_card * card,u32 address,u8 byte)59 static int rsi_cmd52writebyte(struct mmc_card *card,
60 u32 address,
61 u8 byte)
62 {
63 struct mmc_command io_cmd;
64 u32 arg;
65
66 memset(&io_cmd, 0, sizeof(io_cmd));
67 arg = rsi_sdio_set_cmd52_arg(1, 0, 0, address, byte);
68 io_cmd.opcode = SD_IO_RW_DIRECT;
69 io_cmd.arg = arg;
70 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
71
72 return mmc_wait_for_cmd(card->host, &io_cmd, 0);
73 }
74
75 /**
76 * rsi_cmd52readbyte() - This function issues cmd52 byte read onto the card.
77 * @card: Pointer to the mmc_card.
78 * @address: Address to read from.
79 * @byte: Variable to store read value.
80 *
81 * Return: Read status.
82 */
rsi_cmd52readbyte(struct mmc_card * card,u32 address,u8 * byte)83 static int rsi_cmd52readbyte(struct mmc_card *card,
84 u32 address,
85 u8 *byte)
86 {
87 struct mmc_command io_cmd;
88 u32 arg;
89 int err;
90
91 memset(&io_cmd, 0, sizeof(io_cmd));
92 arg = rsi_sdio_set_cmd52_arg(0, 0, 0, address, 0);
93 io_cmd.opcode = SD_IO_RW_DIRECT;
94 io_cmd.arg = arg;
95 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
96
97 err = mmc_wait_for_cmd(card->host, &io_cmd, 0);
98 if ((!err) && (byte))
99 *byte = io_cmd.resp[0] & 0xFF;
100 return err;
101 }
102
103 /**
104 * rsi_issue_sdiocommand() - This function issues sdio commands.
105 * @func: Pointer to the sdio_func structure.
106 * @opcode: Opcode value.
107 * @arg: Arguments to pass.
108 * @flags: Flags which are set.
109 * @resp: Pointer to store response.
110 *
111 * Return: err: command status as 0 or -1.
112 */
rsi_issue_sdiocommand(struct sdio_func * func,u32 opcode,u32 arg,u32 flags,u32 * resp)113 static int rsi_issue_sdiocommand(struct sdio_func *func,
114 u32 opcode,
115 u32 arg,
116 u32 flags,
117 u32 *resp)
118 {
119 struct mmc_command cmd;
120 struct mmc_host *host;
121 int err;
122
123 host = func->card->host;
124
125 memset(&cmd, 0, sizeof(struct mmc_command));
126 cmd.opcode = opcode;
127 cmd.arg = arg;
128 cmd.flags = flags;
129 err = mmc_wait_for_cmd(host, &cmd, 3);
130
131 if ((!err) && (resp))
132 *resp = cmd.resp[0];
133
134 return err;
135 }
136
137 /**
138 * rsi_handle_interrupt() - This function is called upon the occurrence
139 * of an interrupt.
140 * @function: Pointer to the sdio_func structure.
141 *
142 * Return: None.
143 */
rsi_handle_interrupt(struct sdio_func * function)144 static void rsi_handle_interrupt(struct sdio_func *function)
145 {
146 struct rsi_hw *adapter = sdio_get_drvdata(function);
147 struct rsi_91x_sdiodev *dev =
148 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
149
150 if (adapter->priv->fsm_state == FSM_FW_NOT_LOADED)
151 return;
152
153 rsi_set_event(&dev->rx_thread.event);
154 }
155
156 /**
157 * rsi_reset_card() - This function resets and re-initializes the card.
158 * @pfunction: Pointer to the sdio_func structure.
159 *
160 * Return: None.
161 */
rsi_reset_card(struct sdio_func * pfunction)162 static void rsi_reset_card(struct sdio_func *pfunction)
163 {
164 int ret = 0;
165 int err;
166 struct mmc_card *card = pfunction->card;
167 struct mmc_host *host = card->host;
168 u8 cmd52_resp;
169 u32 clock, resp, i;
170 u16 rca;
171
172 /* Reset 9110 chip */
173 ret = rsi_cmd52writebyte(pfunction->card,
174 SDIO_CCCR_ABORT,
175 (1 << 3));
176
177 /* Card will not send any response as it is getting reset immediately
178 * Hence expect a timeout status from host controller
179 */
180 if (ret != -ETIMEDOUT)
181 rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret);
182
183 /* Wait for few milli seconds to get rid of residue charges if any */
184 msleep(20);
185
186 /* Initialize the SDIO card */
187 host->ios.chip_select = MMC_CS_DONTCARE;
188 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
189 host->ios.power_mode = MMC_POWER_UP;
190 host->ios.bus_width = MMC_BUS_WIDTH_1;
191 host->ios.timing = MMC_TIMING_LEGACY;
192 host->ops->set_ios(host, &host->ios);
193
194 /*
195 * This delay should be sufficient to allow the power supply
196 * to reach the minimum voltage.
197 */
198 msleep(20);
199
200 host->ios.clock = host->f_min;
201 host->ios.power_mode = MMC_POWER_ON;
202 host->ops->set_ios(host, &host->ios);
203
204 /*
205 * This delay must be at least 74 clock sizes, or 1 ms, or the
206 * time required to reach a stable voltage.
207 */
208 msleep(20);
209
210 /* Issue CMD0. Goto idle state */
211 host->ios.chip_select = MMC_CS_HIGH;
212 host->ops->set_ios(host, &host->ios);
213 msleep(20);
214 err = rsi_issue_sdiocommand(pfunction,
215 MMC_GO_IDLE_STATE,
216 0,
217 (MMC_RSP_NONE | MMC_CMD_BC),
218 NULL);
219 host->ios.chip_select = MMC_CS_DONTCARE;
220 host->ops->set_ios(host, &host->ios);
221 msleep(20);
222 host->use_spi_crc = 0;
223
224 if (err)
225 rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err);
226
227 /* Issue CMD5, arg = 0 */
228 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 0,
229 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
230 if (err)
231 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
232 __func__, err);
233 card->ocr = resp;
234 /* Issue CMD5, arg = ocr. Wait till card is ready */
235 for (i = 0; i < 100; i++) {
236 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND,
237 card->ocr,
238 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
239 if (err) {
240 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
241 __func__, err);
242 break;
243 }
244
245 if (resp & MMC_CARD_BUSY)
246 break;
247 msleep(20);
248 }
249
250 if ((i == 100) || (err)) {
251 rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n",
252 __func__, i, err);
253 return;
254 }
255
256 /* Issue CMD3, get RCA */
257 err = rsi_issue_sdiocommand(pfunction,
258 SD_SEND_RELATIVE_ADDR,
259 0,
260 (MMC_RSP_R6 | MMC_CMD_BCR),
261 &resp);
262 if (err) {
263 rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err);
264 return;
265 }
266 rca = resp >> 16;
267 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
268 host->ops->set_ios(host, &host->ios);
269
270 /* Issue CMD7, select card */
271 err = rsi_issue_sdiocommand(pfunction,
272 MMC_SELECT_CARD,
273 (rca << 16),
274 (MMC_RSP_R1 | MMC_CMD_AC),
275 NULL);
276 if (err) {
277 rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err);
278 return;
279 }
280
281 /* Enable high speed */
282 if (card->host->caps & MMC_CAP_SD_HIGHSPEED) {
283 rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__);
284 err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp);
285 if (err) {
286 rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n",
287 __func__, err);
288 } else {
289 err = rsi_cmd52writebyte(card,
290 SDIO_CCCR_SPEED,
291 (cmd52_resp | SDIO_SPEED_EHS));
292 if (err) {
293 rsi_dbg(ERR_ZONE,
294 "%s: CCR speed regwrite failed %d\n",
295 __func__, err);
296 return;
297 }
298 host->ios.timing = MMC_TIMING_SD_HS;
299 host->ops->set_ios(host, &host->ios);
300 }
301 }
302
303 /* Set clock */
304 if (mmc_card_hs(card))
305 clock = 50000000;
306 else
307 clock = card->cis.max_dtr;
308
309 if (clock > host->f_max)
310 clock = host->f_max;
311
312 host->ios.clock = clock;
313 host->ops->set_ios(host, &host->ios);
314
315 if (card->host->caps & MMC_CAP_4_BIT_DATA) {
316 /* CMD52: Set bus width & disable card detect resistor */
317 err = rsi_cmd52writebyte(card,
318 SDIO_CCCR_IF,
319 (SDIO_BUS_CD_DISABLE |
320 SDIO_BUS_WIDTH_4BIT));
321 if (err) {
322 rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n",
323 __func__, err);
324 return;
325 }
326 host->ios.bus_width = MMC_BUS_WIDTH_4;
327 host->ops->set_ios(host, &host->ios);
328 }
329 }
330
331 /**
332 * rsi_setclock() - This function sets the clock frequency.
333 * @adapter: Pointer to the adapter structure.
334 * @freq: Clock frequency.
335 *
336 * Return: None.
337 */
rsi_setclock(struct rsi_hw * adapter,u32 freq)338 static void rsi_setclock(struct rsi_hw *adapter, u32 freq)
339 {
340 struct rsi_91x_sdiodev *dev =
341 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
342 struct mmc_host *host = dev->pfunction->card->host;
343 u32 clock;
344
345 clock = freq * 1000;
346 if (clock > host->f_max)
347 clock = host->f_max;
348 host->ios.clock = clock;
349 host->ops->set_ios(host, &host->ios);
350 }
351
352 /**
353 * rsi_setblocklength() - This function sets the host block length.
354 * @adapter: Pointer to the adapter structure.
355 * @length: Block length to be set.
356 *
357 * Return: status: 0 on success, -1 on failure.
358 */
rsi_setblocklength(struct rsi_hw * adapter,u32 length)359 static int rsi_setblocklength(struct rsi_hw *adapter, u32 length)
360 {
361 struct rsi_91x_sdiodev *dev =
362 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
363 int status;
364 rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__);
365
366 status = sdio_set_block_size(dev->pfunction, length);
367 dev->pfunction->max_blksize = 256;
368 adapter->block_size = dev->pfunction->max_blksize;
369
370 rsi_dbg(INFO_ZONE,
371 "%s: Operational blk length is %d\n", __func__, length);
372 return status;
373 }
374
375 /**
376 * rsi_setupcard() - This function queries and sets the card's features.
377 * @adapter: Pointer to the adapter structure.
378 *
379 * Return: status: 0 on success, -1 on failure.
380 */
rsi_setupcard(struct rsi_hw * adapter)381 static int rsi_setupcard(struct rsi_hw *adapter)
382 {
383 struct rsi_91x_sdiodev *dev =
384 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
385 int status = 0;
386
387 rsi_setclock(adapter, 50000);
388
389 dev->tx_blk_size = 256;
390 status = rsi_setblocklength(adapter, dev->tx_blk_size);
391 if (status)
392 rsi_dbg(ERR_ZONE,
393 "%s: Unable to set block length\n", __func__);
394 return status;
395 }
396
397 /**
398 * rsi_sdio_read_register() - This function reads one byte of information
399 * from a register.
400 * @adapter: Pointer to the adapter structure.
401 * @addr: Address of the register.
402 * @data: Pointer to the data that stores the data read.
403 *
404 * Return: 0 on success, -1 on failure.
405 */
rsi_sdio_read_register(struct rsi_hw * adapter,u32 addr,u8 * data)406 int rsi_sdio_read_register(struct rsi_hw *adapter,
407 u32 addr,
408 u8 *data)
409 {
410 struct rsi_91x_sdiodev *dev =
411 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
412 u8 fun_num = 0;
413 int status;
414
415 if (likely(dev->sdio_irq_task != current))
416 sdio_claim_host(dev->pfunction);
417
418 if (fun_num == 0)
419 *data = sdio_f0_readb(dev->pfunction, addr, &status);
420 else
421 *data = sdio_readb(dev->pfunction, addr, &status);
422
423 if (likely(dev->sdio_irq_task != current))
424 sdio_release_host(dev->pfunction);
425
426 return status;
427 }
428
429 /**
430 * rsi_sdio_write_register() - This function writes one byte of information
431 * into a register.
432 * @adapter: Pointer to the adapter structure.
433 * @function: Function Number.
434 * @addr: Address of the register.
435 * @data: Pointer to the data tha has to be written.
436 *
437 * Return: 0 on success, -1 on failure.
438 */
rsi_sdio_write_register(struct rsi_hw * adapter,u8 function,u32 addr,u8 * data)439 int rsi_sdio_write_register(struct rsi_hw *adapter,
440 u8 function,
441 u32 addr,
442 u8 *data)
443 {
444 struct rsi_91x_sdiodev *dev =
445 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
446 int status = 0;
447
448 if (likely(dev->sdio_irq_task != current))
449 sdio_claim_host(dev->pfunction);
450
451 if (function == 0)
452 sdio_f0_writeb(dev->pfunction, *data, addr, &status);
453 else
454 sdio_writeb(dev->pfunction, *data, addr, &status);
455
456 if (likely(dev->sdio_irq_task != current))
457 sdio_release_host(dev->pfunction);
458
459 return status;
460 }
461
462 /**
463 * rsi_sdio_ack_intr() - This function acks the interrupt received.
464 * @adapter: Pointer to the adapter structure.
465 * @int_bit: Interrupt bit to write into register.
466 *
467 * Return: None.
468 */
rsi_sdio_ack_intr(struct rsi_hw * adapter,u8 int_bit)469 void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit)
470 {
471 int status;
472 status = rsi_sdio_write_register(adapter,
473 1,
474 (SDIO_FUN1_INTR_CLR_REG |
475 RSI_SD_REQUEST_MASTER),
476 &int_bit);
477 if (status)
478 rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__);
479 }
480
481
482
483 /**
484 * rsi_sdio_read_register_multiple() - This function read multiple bytes of
485 * information from the SD card.
486 * @adapter: Pointer to the adapter structure.
487 * @addr: Address of the register.
488 * @count: Number of multiple bytes to be read.
489 * @data: Pointer to the read data.
490 *
491 * Return: 0 on success, -1 on failure.
492 */
rsi_sdio_read_register_multiple(struct rsi_hw * adapter,u32 addr,u8 * data,u16 count)493 static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter,
494 u32 addr,
495 u8 *data,
496 u16 count)
497 {
498 struct rsi_91x_sdiodev *dev =
499 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
500 u32 status;
501
502 if (likely(dev->sdio_irq_task != current))
503 sdio_claim_host(dev->pfunction);
504
505 status = sdio_readsb(dev->pfunction, data, addr, count);
506
507 if (likely(dev->sdio_irq_task != current))
508 sdio_release_host(dev->pfunction);
509
510 if (status != 0)
511 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__);
512 return status;
513 }
514
515 /**
516 * rsi_sdio_write_register_multiple() - This function writes multiple bytes of
517 * information to the SD card.
518 * @adapter: Pointer to the adapter structure.
519 * @addr: Address of the register.
520 * @data: Pointer to the data that has to be written.
521 * @count: Number of multiple bytes to be written.
522 *
523 * Return: 0 on success, -1 on failure.
524 */
rsi_sdio_write_register_multiple(struct rsi_hw * adapter,u32 addr,u8 * data,u16 count)525 int rsi_sdio_write_register_multiple(struct rsi_hw *adapter,
526 u32 addr,
527 u8 *data,
528 u16 count)
529 {
530 struct rsi_91x_sdiodev *dev =
531 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
532 int status;
533
534 if (dev->write_fail > 1) {
535 rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__);
536 return 0;
537 } else if (dev->write_fail == 1) {
538 /**
539 * Assuming it is a CRC failure, we want to allow another
540 * card write
541 */
542 rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__);
543 dev->write_fail++;
544 }
545
546 if (likely(dev->sdio_irq_task != current))
547 sdio_claim_host(dev->pfunction);
548
549 status = sdio_writesb(dev->pfunction, addr, data, count);
550
551 if (likely(dev->sdio_irq_task != current))
552 sdio_release_host(dev->pfunction);
553
554 if (status) {
555 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n",
556 __func__, status);
557 dev->write_fail = 2;
558 } else {
559 memcpy(dev->prev_desc, data, FRAME_DESC_SZ);
560 }
561 return status;
562 }
563
rsi_sdio_load_data_master_write(struct rsi_hw * adapter,u32 base_address,u32 instructions_sz,u16 block_size,u8 * ta_firmware)564 static int rsi_sdio_load_data_master_write(struct rsi_hw *adapter,
565 u32 base_address,
566 u32 instructions_sz,
567 u16 block_size,
568 u8 *ta_firmware)
569 {
570 u32 num_blocks, offset, i;
571 u16 msb_address, lsb_address;
572 u8 *temp_buf;
573 int status;
574
575 num_blocks = instructions_sz / block_size;
576 msb_address = base_address >> 16;
577
578 rsi_dbg(INFO_ZONE, "ins_size: %d, num_blocks: %d\n",
579 instructions_sz, num_blocks);
580
581 temp_buf = kmalloc(block_size, GFP_KERNEL);
582 if (!temp_buf)
583 return -ENOMEM;
584
585 /* Loading DM ms word in the sdio slave */
586 status = rsi_sdio_master_access_msword(adapter, msb_address);
587 if (status < 0) {
588 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
589 goto out_free;
590 }
591
592 for (offset = 0, i = 0; i < num_blocks; i++, offset += block_size) {
593 memcpy(temp_buf, ta_firmware + offset, block_size);
594 lsb_address = (u16)base_address;
595 status = rsi_sdio_write_register_multiple
596 (adapter,
597 lsb_address | RSI_SD_REQUEST_MASTER,
598 temp_buf, block_size);
599 if (status < 0) {
600 rsi_dbg(ERR_ZONE, "%s: failed to write\n", __func__);
601 goto out_free;
602 }
603 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i);
604 base_address += block_size;
605
606 if ((base_address >> 16) != msb_address) {
607 msb_address += 1;
608
609 /* Loading DM ms word in the sdio slave */
610 status = rsi_sdio_master_access_msword(adapter,
611 msb_address);
612 if (status < 0) {
613 rsi_dbg(ERR_ZONE,
614 "%s: Unable to set ms word reg\n",
615 __func__);
616 goto out_free;
617 }
618 }
619 }
620
621 if (instructions_sz % block_size) {
622 memset(temp_buf, 0, block_size);
623 memcpy(temp_buf, ta_firmware + offset,
624 instructions_sz % block_size);
625 lsb_address = (u16)base_address;
626 status = rsi_sdio_write_register_multiple
627 (adapter,
628 lsb_address | RSI_SD_REQUEST_MASTER,
629 temp_buf,
630 instructions_sz % block_size);
631 if (status < 0)
632 goto out_free;
633 rsi_dbg(INFO_ZONE,
634 "Written Last Block in Address 0x%x Successfully\n",
635 offset | RSI_SD_REQUEST_MASTER);
636 }
637
638 status = 0;
639 out_free:
640 kfree(temp_buf);
641 return status;
642 }
643
644 #define FLASH_SIZE_ADDR 0x04000016
rsi_sdio_master_reg_read(struct rsi_hw * adapter,u32 addr,u32 * read_buf,u16 size)645 static int rsi_sdio_master_reg_read(struct rsi_hw *adapter, u32 addr,
646 u32 *read_buf, u16 size)
647 {
648 u32 addr_on_bus, *data;
649 u16 ms_addr;
650 int status;
651
652 data = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
653 if (!data)
654 return -ENOMEM;
655
656 ms_addr = (addr >> 16);
657 status = rsi_sdio_master_access_msword(adapter, ms_addr);
658 if (status < 0) {
659 rsi_dbg(ERR_ZONE,
660 "%s: Unable to set ms word to common reg\n",
661 __func__);
662 goto err;
663 }
664 addr &= 0xFFFF;
665
666 addr_on_bus = (addr & 0xFF000000);
667 if ((addr_on_bus == (FLASH_SIZE_ADDR & 0xFF000000)) ||
668 (addr_on_bus == 0x0))
669 addr_on_bus = (addr & ~(0x3));
670 else
671 addr_on_bus = addr;
672
673 /* Bring TA out of reset */
674 status = rsi_sdio_read_register_multiple
675 (adapter,
676 (addr_on_bus | RSI_SD_REQUEST_MASTER),
677 (u8 *)data, 4);
678 if (status < 0) {
679 rsi_dbg(ERR_ZONE, "%s: AHB register read failed\n", __func__);
680 goto err;
681 }
682 if (size == 2) {
683 if ((addr & 0x3) == 0)
684 *read_buf = *data;
685 else
686 *read_buf = (*data >> 16);
687 *read_buf = (*read_buf & 0xFFFF);
688 } else if (size == 1) {
689 if ((addr & 0x3) == 0)
690 *read_buf = *data;
691 else if ((addr & 0x3) == 1)
692 *read_buf = (*data >> 8);
693 else if ((addr & 0x3) == 2)
694 *read_buf = (*data >> 16);
695 else
696 *read_buf = (*data >> 24);
697 *read_buf = (*read_buf & 0xFF);
698 } else {
699 *read_buf = *data;
700 }
701
702 err:
703 kfree(data);
704 return status;
705 }
706
rsi_sdio_master_reg_write(struct rsi_hw * adapter,unsigned long addr,unsigned long data,u16 size)707 static int rsi_sdio_master_reg_write(struct rsi_hw *adapter,
708 unsigned long addr,
709 unsigned long data, u16 size)
710 {
711 unsigned long *data_aligned;
712 int status;
713
714 data_aligned = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
715 if (!data_aligned)
716 return -ENOMEM;
717
718 if (size == 2) {
719 *data_aligned = ((data << 16) | (data & 0xFFFF));
720 } else if (size == 1) {
721 u32 temp_data = data & 0xFF;
722
723 *data_aligned = ((temp_data << 24) | (temp_data << 16) |
724 (temp_data << 8) | temp_data);
725 } else {
726 *data_aligned = data;
727 }
728 size = 4;
729
730 status = rsi_sdio_master_access_msword(adapter, (addr >> 16));
731 if (status < 0) {
732 rsi_dbg(ERR_ZONE,
733 "%s: Unable to set ms word to common reg\n",
734 __func__);
735 kfree(data_aligned);
736 return -EIO;
737 }
738 addr = addr & 0xFFFF;
739
740 /* Bring TA out of reset */
741 status = rsi_sdio_write_register_multiple
742 (adapter,
743 (addr | RSI_SD_REQUEST_MASTER),
744 (u8 *)data_aligned, size);
745 if (status < 0)
746 rsi_dbg(ERR_ZONE,
747 "%s: Unable to do AHB reg write\n", __func__);
748
749 kfree(data_aligned);
750 return status;
751 }
752
753 /**
754 * rsi_sdio_host_intf_write_pkt() - This function writes the packet to device.
755 * @adapter: Pointer to the adapter structure.
756 * @pkt: Pointer to the data to be written on to the device.
757 * @len: length of the data to be written on to the device.
758 *
759 * Return: 0 on success, -1 on failure.
760 */
rsi_sdio_host_intf_write_pkt(struct rsi_hw * adapter,u8 * pkt,u32 len)761 static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter,
762 u8 *pkt,
763 u32 len)
764 {
765 struct rsi_91x_sdiodev *dev =
766 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
767 u32 block_size = dev->tx_blk_size;
768 u32 num_blocks, address, length;
769 u32 queueno;
770 int status;
771
772 queueno = ((pkt[1] >> 4) & 0xf);
773 if (queueno == RSI_BT_MGMT_Q || queueno == RSI_BT_DATA_Q)
774 queueno = RSI_BT_Q;
775
776 num_blocks = len / block_size;
777
778 if (len % block_size)
779 num_blocks++;
780
781 address = (num_blocks * block_size | (queueno << 12));
782 length = num_blocks * block_size;
783
784 status = rsi_sdio_write_register_multiple(adapter,
785 address,
786 (u8 *)pkt,
787 length);
788 if (status)
789 rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n",
790 __func__, status);
791 rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__);
792 return status;
793 }
794
795 /**
796 * rsi_sdio_host_intf_read_pkt() - This function reads the packet
797 * from the device.
798 * @adapter: Pointer to the adapter data structure.
799 * @pkt: Pointer to the packet data to be read from the the device.
800 * @length: Length of the data to be read from the device.
801 *
802 * Return: 0 on success, -1 on failure.
803 */
rsi_sdio_host_intf_read_pkt(struct rsi_hw * adapter,u8 * pkt,u32 length)804 int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter,
805 u8 *pkt,
806 u32 length)
807 {
808 int status = -EINVAL;
809
810 if (!length) {
811 rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__);
812 return status;
813 }
814
815 status = rsi_sdio_read_register_multiple(adapter,
816 length,
817 (u8 *)pkt,
818 length); /*num of bytes*/
819
820 if (status)
821 rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__,
822 status);
823 return status;
824 }
825
826 /**
827 * rsi_init_sdio_interface() - This function does init specific to SDIO.
828 *
829 * @adapter: Pointer to the adapter data structure.
830 * @pfunction: Pointer to the sdio_func structure.
831 *
832 * Return: 0 on success, -1 on failure.
833 */
rsi_init_sdio_interface(struct rsi_hw * adapter,struct sdio_func * pfunction)834 static int rsi_init_sdio_interface(struct rsi_hw *adapter,
835 struct sdio_func *pfunction)
836 {
837 struct rsi_91x_sdiodev *rsi_91x_dev;
838 int status;
839
840 rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL);
841 if (!rsi_91x_dev)
842 return -ENOMEM;
843
844 adapter->rsi_dev = rsi_91x_dev;
845
846 sdio_claim_host(pfunction);
847
848 pfunction->enable_timeout = 100;
849 status = sdio_enable_func(pfunction);
850 if (status) {
851 rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__);
852 sdio_release_host(pfunction);
853 return status;
854 }
855
856 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__);
857
858 rsi_91x_dev->pfunction = pfunction;
859 adapter->device = &pfunction->dev;
860
861 sdio_set_drvdata(pfunction, adapter);
862
863 status = rsi_setupcard(adapter);
864 if (status) {
865 rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__);
866 goto fail;
867 }
868
869 rsi_dbg(INIT_ZONE, "%s: Setup card successfully\n", __func__);
870
871 status = rsi_init_sdio_slave_regs(adapter);
872 if (status) {
873 rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__);
874 goto fail;
875 }
876 sdio_release_host(pfunction);
877
878 adapter->determine_event_timeout = rsi_sdio_determine_event_timeout;
879 adapter->check_hw_queue_status = rsi_sdio_check_buffer_status;
880
881 #ifdef CONFIG_RSI_DEBUGFS
882 adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES;
883 #endif
884 return 0;
885 fail:
886 sdio_disable_func(pfunction);
887 sdio_release_host(pfunction);
888 return status;
889 }
890
rsi_sdio_reinit_device(struct rsi_hw * adapter)891 static int rsi_sdio_reinit_device(struct rsi_hw *adapter)
892 {
893 struct rsi_91x_sdiodev *sdev = adapter->rsi_dev;
894 struct sdio_func *pfunction = sdev->pfunction;
895 int ii;
896
897 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
898 skb_queue_purge(&adapter->priv->tx_queue[ii]);
899
900 /* Initialize device again */
901 sdio_claim_host(pfunction);
902
903 sdio_release_irq(pfunction);
904 rsi_reset_card(pfunction);
905
906 sdio_enable_func(pfunction);
907 rsi_setupcard(adapter);
908 rsi_init_sdio_slave_regs(adapter);
909 sdio_claim_irq(pfunction, rsi_handle_interrupt);
910 rsi_hal_device_init(adapter);
911
912 sdio_release_host(pfunction);
913
914 return 0;
915 }
916
rsi_sdio_ta_reset(struct rsi_hw * adapter)917 static int rsi_sdio_ta_reset(struct rsi_hw *adapter)
918 {
919 int status;
920 u32 addr;
921 u8 *data;
922
923 data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL);
924 if (!data)
925 return -ENOMEM;
926
927 status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR);
928 if (status < 0) {
929 rsi_dbg(ERR_ZONE,
930 "Unable to set ms word to common reg\n");
931 goto err;
932 }
933
934 rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__);
935 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
936 addr = TA_HOLD_THREAD_REG | RSI_SD_REQUEST_MASTER;
937 status = rsi_sdio_write_register_multiple(adapter, addr,
938 (u8 *)data,
939 RSI_9116_REG_SIZE);
940 if (status < 0) {
941 rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n");
942 goto err;
943 }
944
945 put_unaligned_le32(TA_SOFT_RST_CLR, data);
946 addr = TA_SOFT_RESET_REG | RSI_SD_REQUEST_MASTER;
947 status = rsi_sdio_write_register_multiple(adapter, addr,
948 (u8 *)data,
949 RSI_9116_REG_SIZE);
950 if (status < 0) {
951 rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n");
952 goto err;
953 }
954
955 put_unaligned_le32(TA_PC_ZERO, data);
956 addr = TA_TH0_PC_REG | RSI_SD_REQUEST_MASTER;
957 status = rsi_sdio_write_register_multiple(adapter, addr,
958 (u8 *)data,
959 RSI_9116_REG_SIZE);
960 if (status < 0) {
961 rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n");
962 status = -EINVAL;
963 goto err;
964 }
965
966 put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data);
967 addr = TA_RELEASE_THREAD_REG | RSI_SD_REQUEST_MASTER;
968 status = rsi_sdio_write_register_multiple(adapter, addr,
969 (u8 *)data,
970 RSI_9116_REG_SIZE);
971 if (status < 0) {
972 rsi_dbg(ERR_ZONE, "Unable to release TA threads\n");
973 goto err;
974 }
975
976 status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR);
977 if (status < 0) {
978 rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n");
979 goto err;
980 }
981 rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n");
982
983 err:
984 kfree(data);
985 return status;
986 }
987
988 static struct rsi_host_intf_ops sdio_host_intf_ops = {
989 .write_pkt = rsi_sdio_host_intf_write_pkt,
990 .read_pkt = rsi_sdio_host_intf_read_pkt,
991 .master_access_msword = rsi_sdio_master_access_msword,
992 .read_reg_multiple = rsi_sdio_read_register_multiple,
993 .write_reg_multiple = rsi_sdio_write_register_multiple,
994 .master_reg_read = rsi_sdio_master_reg_read,
995 .master_reg_write = rsi_sdio_master_reg_write,
996 .load_data_master_write = rsi_sdio_load_data_master_write,
997 .reinit_device = rsi_sdio_reinit_device,
998 .ta_reset = rsi_sdio_ta_reset,
999 };
1000
1001 /**
1002 * rsi_probe() - This function is called by kernel when the driver provided
1003 * Vendor and device IDs are matched. All the initialization
1004 * work is done here.
1005 * @pfunction: Pointer to the sdio_func structure.
1006 * @id: Pointer to sdio_device_id structure.
1007 *
1008 * Return: 0 on success, 1 on failure.
1009 */
rsi_probe(struct sdio_func * pfunction,const struct sdio_device_id * id)1010 static int rsi_probe(struct sdio_func *pfunction,
1011 const struct sdio_device_id *id)
1012 {
1013 struct rsi_hw *adapter;
1014 struct rsi_91x_sdiodev *sdev;
1015 int status = -EINVAL;
1016
1017 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__);
1018
1019 adapter = rsi_91x_init(dev_oper_mode);
1020 if (!adapter) {
1021 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n",
1022 __func__);
1023 return -EINVAL;
1024 }
1025 adapter->rsi_host_intf = RSI_HOST_INTF_SDIO;
1026 adapter->host_intf_ops = &sdio_host_intf_ops;
1027
1028 if (rsi_init_sdio_interface(adapter, pfunction)) {
1029 rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n",
1030 __func__);
1031 status = -EIO;
1032 goto fail_free_adapter;
1033 }
1034
1035 if (pfunction->device == SDIO_DEVICE_ID_RSI_9113) {
1036 rsi_dbg(ERR_ZONE, "%s: 9113 module detected\n", __func__);
1037 adapter->device_model = RSI_DEV_9113;
1038 } else if (pfunction->device == SDIO_DEVICE_ID_RSI_9116) {
1039 rsi_dbg(ERR_ZONE, "%s: 9116 module detected\n", __func__);
1040 adapter->device_model = RSI_DEV_9116;
1041 } else {
1042 rsi_dbg(ERR_ZONE,
1043 "%s: Unsupported RSI device id 0x%x\n", __func__,
1044 pfunction->device);
1045 goto fail_free_adapter;
1046 }
1047
1048 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1049 rsi_init_event(&sdev->rx_thread.event);
1050 status = rsi_create_kthread(adapter->priv, &sdev->rx_thread,
1051 rsi_sdio_rx_thread, "SDIO-RX-Thread");
1052 if (status) {
1053 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__);
1054 goto fail_kill_thread;
1055 }
1056
1057 sdio_claim_host(pfunction);
1058 if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) {
1059 rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__);
1060 sdio_release_host(pfunction);
1061 status = -EIO;
1062 goto fail_claim_irq;
1063 }
1064 sdio_release_host(pfunction);
1065 rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__);
1066
1067 if (rsi_hal_device_init(adapter)) {
1068 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__);
1069 status = -EINVAL;
1070 goto fail_dev_init;
1071 }
1072 rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n");
1073
1074 if (rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR)) {
1075 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
1076 status = -EIO;
1077 goto fail_dev_init;
1078 }
1079
1080 adapter->priv->hibernate_resume = false;
1081 adapter->priv->reinit_hw = false;
1082 return 0;
1083
1084 fail_dev_init:
1085 sdio_claim_host(pfunction);
1086 sdio_release_irq(pfunction);
1087 sdio_release_host(pfunction);
1088 fail_claim_irq:
1089 rsi_kill_thread(&sdev->rx_thread);
1090 fail_kill_thread:
1091 sdio_claim_host(pfunction);
1092 sdio_disable_func(pfunction);
1093 sdio_release_host(pfunction);
1094 fail_free_adapter:
1095 rsi_91x_deinit(adapter);
1096 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__);
1097 return status;
1098 }
1099
ulp_read_write(struct rsi_hw * adapter,u16 addr,u32 data,u16 len_in_bits)1100 static void ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data,
1101 u16 len_in_bits)
1102 {
1103 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG1,
1104 ((addr << 6) | ((data >> 16) & 0xffff)), 2);
1105 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG0,
1106 (data & 0xffff), 2);
1107 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG0,
1108 RSI_GSPI_CTRL_REG0_VALUE, 2);
1109 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG1,
1110 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2);
1111 msleep(20);
1112 }
1113
1114 /*This function resets and re-initializes the chip.*/
rsi_reset_chip(struct rsi_hw * adapter)1115 static void rsi_reset_chip(struct rsi_hw *adapter)
1116 {
1117 u8 *data;
1118 u8 sdio_interrupt_status = 0;
1119 u8 request = 1;
1120 int ret;
1121
1122 data = kzalloc(sizeof(u32), GFP_KERNEL);
1123 if (!data)
1124 return;
1125
1126 rsi_dbg(INFO_ZONE, "Writing disable to wakeup register\n");
1127 ret = rsi_sdio_write_register(adapter, 0, SDIO_WAKEUP_REG, &request);
1128 if (ret < 0) {
1129 rsi_dbg(ERR_ZONE,
1130 "%s: Failed to write SDIO wakeup register\n", __func__);
1131 goto err;
1132 }
1133 msleep(20);
1134 ret = rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1135 &sdio_interrupt_status);
1136 if (ret < 0) {
1137 rsi_dbg(ERR_ZONE, "%s: Failed to Read Intr Status Register\n",
1138 __func__);
1139 goto err;
1140 }
1141 rsi_dbg(INFO_ZONE, "%s: Intr Status Register value = %d\n",
1142 __func__, sdio_interrupt_status);
1143
1144 /* Put Thread-Arch processor on hold */
1145 if (rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR)) {
1146 rsi_dbg(ERR_ZONE,
1147 "%s: Unable to set ms word to common reg\n",
1148 __func__);
1149 goto err;
1150 }
1151
1152 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
1153 if (rsi_sdio_write_register_multiple(adapter, TA_HOLD_THREAD_REG |
1154 RSI_SD_REQUEST_MASTER,
1155 data, 4)) {
1156 rsi_dbg(ERR_ZONE,
1157 "%s: Unable to hold Thread-Arch processor threads\n",
1158 __func__);
1159 goto err;
1160 }
1161
1162 /* This msleep will ensure Thread-Arch processor to go to hold
1163 * and any pending dma transfers to rf spi in device to finish.
1164 */
1165 msleep(100);
1166 if (adapter->device_model != RSI_DEV_9116) {
1167 ulp_read_write(adapter, RSI_ULP_RESET_REG, RSI_ULP_WRITE_0, 32);
1168 ulp_read_write(adapter,
1169 RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32);
1170 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0,
1171 32);
1172 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1,
1173 RSI_ULP_WRITE_50, 32);
1174 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2,
1175 RSI_ULP_WRITE_0, 32);
1176 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE,
1177 RSI_ULP_TIMER_ENABLE, 32);
1178 } else {
1179 if ((rsi_sdio_master_reg_write(adapter,
1180 NWP_WWD_INTERRUPT_TIMER,
1181 NWP_WWD_INT_TIMER_CLKS,
1182 RSI_9116_REG_SIZE)) < 0) {
1183 rsi_dbg(ERR_ZONE, "Failed to write to intr timer\n");
1184 }
1185 if ((rsi_sdio_master_reg_write(adapter,
1186 NWP_WWD_SYSTEM_RESET_TIMER,
1187 NWP_WWD_SYS_RESET_TIMER_CLKS,
1188 RSI_9116_REG_SIZE)) < 0) {
1189 rsi_dbg(ERR_ZONE,
1190 "Failed to write to system reset timer\n");
1191 }
1192 if ((rsi_sdio_master_reg_write(adapter,
1193 NWP_WWD_MODE_AND_RSTART,
1194 NWP_WWD_TIMER_DISABLE,
1195 RSI_9116_REG_SIZE)) < 0) {
1196 rsi_dbg(ERR_ZONE,
1197 "Failed to write to mode and restart\n");
1198 }
1199 rsi_dbg(ERR_ZONE, "***** Watch Dog Reset Successful *****\n");
1200 }
1201 /* This msleep will be sufficient for the ulp
1202 * read write operations to complete for chip reset.
1203 */
1204 msleep(500);
1205 err:
1206 kfree(data);
1207 return;
1208 }
1209
1210 /**
1211 * rsi_disconnect() - This function performs the reverse of the probe function.
1212 * @pfunction: Pointer to the sdio_func structure.
1213 *
1214 * Return: void.
1215 */
rsi_disconnect(struct sdio_func * pfunction)1216 static void rsi_disconnect(struct sdio_func *pfunction)
1217 {
1218 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1219 struct rsi_91x_sdiodev *dev;
1220
1221 if (!adapter)
1222 return;
1223
1224 dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1225
1226 rsi_kill_thread(&dev->rx_thread);
1227 sdio_claim_host(pfunction);
1228 sdio_release_irq(pfunction);
1229 sdio_release_host(pfunction);
1230 mdelay(10);
1231
1232 rsi_mac80211_detach(adapter);
1233 mdelay(10);
1234
1235 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1236 adapter->priv->bt_adapter) {
1237 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1238 adapter->priv->bt_adapter = NULL;
1239 }
1240
1241 /* Reset Chip */
1242 rsi_reset_chip(adapter);
1243
1244 /* Resetting to take care of the case, where-in driver is re-loaded */
1245 sdio_claim_host(pfunction);
1246 rsi_reset_card(pfunction);
1247 sdio_disable_func(pfunction);
1248 sdio_release_host(pfunction);
1249 dev->write_fail = 2;
1250 rsi_91x_deinit(adapter);
1251 rsi_dbg(ERR_ZONE, "##### RSI SDIO device disconnected #####\n");
1252
1253 }
1254
1255 #ifdef CONFIG_PM
rsi_set_sdio_pm_caps(struct rsi_hw * adapter)1256 static int rsi_set_sdio_pm_caps(struct rsi_hw *adapter)
1257 {
1258 struct rsi_91x_sdiodev *dev =
1259 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1260 struct sdio_func *func = dev->pfunction;
1261 int ret;
1262
1263 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1264 if (ret)
1265 rsi_dbg(ERR_ZONE, "Set sdio keep pwr flag failed: %d\n", ret);
1266
1267 return ret;
1268 }
1269
rsi_sdio_disable_interrupts(struct sdio_func * pfunc)1270 static int rsi_sdio_disable_interrupts(struct sdio_func *pfunc)
1271 {
1272 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1273 u8 isr_status = 0, data = 0;
1274 int ret;
1275 unsigned long t1;
1276
1277 rsi_dbg(INFO_ZONE, "Waiting for interrupts to be cleared..");
1278 t1 = jiffies;
1279 do {
1280 rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1281 &isr_status);
1282 rsi_dbg(INFO_ZONE, ".");
1283 } while ((isr_status) && (jiffies_to_msecs(jiffies - t1) < 20));
1284 rsi_dbg(INFO_ZONE, "Interrupts cleared\n");
1285
1286 sdio_claim_host(pfunc);
1287 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1288 if (ret < 0) {
1289 rsi_dbg(ERR_ZONE,
1290 "%s: Failed to read int enable register\n",
1291 __func__);
1292 goto done;
1293 }
1294
1295 data &= RSI_INT_ENABLE_MASK;
1296 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1297 if (ret < 0) {
1298 rsi_dbg(ERR_ZONE,
1299 "%s: Failed to write to int enable register\n",
1300 __func__);
1301 goto done;
1302 }
1303 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1304 if (ret < 0) {
1305 rsi_dbg(ERR_ZONE,
1306 "%s: Failed to read int enable register\n",
1307 __func__);
1308 goto done;
1309 }
1310 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1311
1312 done:
1313 sdio_release_host(pfunc);
1314 return ret;
1315 }
1316
rsi_sdio_enable_interrupts(struct sdio_func * pfunc)1317 static int rsi_sdio_enable_interrupts(struct sdio_func *pfunc)
1318 {
1319 u8 data;
1320 int ret;
1321 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1322 struct rsi_common *common = adapter->priv;
1323
1324 sdio_claim_host(pfunc);
1325 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1326 if (ret < 0) {
1327 rsi_dbg(ERR_ZONE,
1328 "%s: Failed to read int enable register\n", __func__);
1329 goto done;
1330 }
1331
1332 data |= ~RSI_INT_ENABLE_MASK & 0xff;
1333
1334 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1335 if (ret < 0) {
1336 rsi_dbg(ERR_ZONE,
1337 "%s: Failed to write to int enable register\n",
1338 __func__);
1339 goto done;
1340 }
1341
1342 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1343 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1344 rsi_dbg(ERR_ZONE,
1345 "##### Device can not wake up through WLAN\n");
1346
1347 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1348 if (ret < 0) {
1349 rsi_dbg(ERR_ZONE,
1350 "%s: Failed to read int enable register\n", __func__);
1351 goto done;
1352 }
1353 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1354
1355 done:
1356 sdio_release_host(pfunc);
1357 return ret;
1358 }
1359
rsi_suspend(struct device * dev)1360 static int rsi_suspend(struct device *dev)
1361 {
1362 int ret;
1363 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1364 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1365 struct rsi_common *common;
1366
1367 if (!adapter) {
1368 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1369 return -ENODEV;
1370 }
1371 common = adapter->priv;
1372 rsi_sdio_disable_interrupts(pfunction);
1373
1374 ret = rsi_set_sdio_pm_caps(adapter);
1375 if (ret)
1376 rsi_dbg(INFO_ZONE,
1377 "Setting power management caps failed\n");
1378 common->fsm_state = FSM_CARD_NOT_READY;
1379
1380 return 0;
1381 }
1382
rsi_resume(struct device * dev)1383 static int rsi_resume(struct device *dev)
1384 {
1385 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1386 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1387 struct rsi_common *common = adapter->priv;
1388
1389 common->fsm_state = FSM_MAC_INIT_DONE;
1390 rsi_sdio_enable_interrupts(pfunction);
1391
1392 return 0;
1393 }
1394
rsi_freeze(struct device * dev)1395 static int rsi_freeze(struct device *dev)
1396 {
1397 int ret;
1398 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1399 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1400 struct rsi_common *common;
1401 struct rsi_91x_sdiodev *sdev;
1402
1403 rsi_dbg(INFO_ZONE, "SDIO Bus freeze ===>\n");
1404
1405 if (!adapter) {
1406 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1407 return -ENODEV;
1408 }
1409 common = adapter->priv;
1410 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1411
1412 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1413 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1414 rsi_dbg(ERR_ZONE,
1415 "##### Device can not wake up through WLAN\n");
1416
1417 if (IS_ENABLED(CONFIG_RSI_COEX) && common->coex_mode > 1 &&
1418 common->bt_adapter) {
1419 rsi_bt_ops.detach(common->bt_adapter);
1420 common->bt_adapter = NULL;
1421 }
1422
1423 ret = rsi_sdio_disable_interrupts(pfunction);
1424
1425 if (sdev->write_fail)
1426 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1427
1428 ret = rsi_set_sdio_pm_caps(adapter);
1429 if (ret)
1430 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1431
1432 rsi_dbg(INFO_ZONE, "***** RSI module freezed *****\n");
1433
1434 return 0;
1435 }
1436
rsi_thaw(struct device * dev)1437 static int rsi_thaw(struct device *dev)
1438 {
1439 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1440 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1441 struct rsi_common *common = adapter->priv;
1442
1443 rsi_dbg(ERR_ZONE, "SDIO Bus thaw =====>\n");
1444
1445 common->hibernate_resume = true;
1446 common->fsm_state = FSM_CARD_NOT_READY;
1447 common->iface_down = true;
1448
1449 rsi_sdio_enable_interrupts(pfunction);
1450
1451 rsi_dbg(INFO_ZONE, "***** RSI module thaw done *****\n");
1452
1453 return 0;
1454 }
1455
rsi_shutdown(struct device * dev)1456 static void rsi_shutdown(struct device *dev)
1457 {
1458 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1459 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1460 struct rsi_91x_sdiodev *sdev =
1461 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1462 struct ieee80211_hw *hw = adapter->hw;
1463
1464 rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n");
1465
1466 if (hw) {
1467 struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config;
1468
1469 if (rsi_config_wowlan(adapter, wowlan))
1470 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1471 }
1472
1473 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1474 adapter->priv->bt_adapter) {
1475 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1476 adapter->priv->bt_adapter = NULL;
1477 }
1478
1479 rsi_sdio_disable_interrupts(sdev->pfunction);
1480
1481 if (sdev->write_fail)
1482 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1483
1484 if (rsi_set_sdio_pm_caps(adapter))
1485 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1486
1487 rsi_dbg(INFO_ZONE, "***** RSI module shut down *****\n");
1488 }
1489
rsi_restore(struct device * dev)1490 static int rsi_restore(struct device *dev)
1491 {
1492 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1493 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1494 struct rsi_common *common = adapter->priv;
1495
1496 rsi_dbg(INFO_ZONE, "SDIO Bus restore ======>\n");
1497 common->hibernate_resume = true;
1498 common->fsm_state = FSM_FW_NOT_LOADED;
1499 common->iface_down = true;
1500
1501 adapter->sc_nvifs = 0;
1502 adapter->ps_state = PS_NONE;
1503
1504 common->wow_flags = 0;
1505 common->iface_down = false;
1506
1507 rsi_dbg(INFO_ZONE, "RSI module restored\n");
1508
1509 return 0;
1510 }
1511 static const struct dev_pm_ops rsi_pm_ops = {
1512 .suspend = rsi_suspend,
1513 .resume_noirq = rsi_resume,
1514 .freeze = rsi_freeze,
1515 .thaw = rsi_thaw,
1516 .restore = rsi_restore,
1517 };
1518 #endif
1519
1520 static const struct sdio_device_id rsi_dev_table[] = {
1521 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9113) },
1522 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9116) },
1523 { /* Blank */},
1524 };
1525
1526 static struct sdio_driver rsi_driver = {
1527 .name = "RSI-SDIO WLAN",
1528 .probe = rsi_probe,
1529 .remove = rsi_disconnect,
1530 .id_table = rsi_dev_table,
1531 #ifdef CONFIG_PM
1532 .drv = {
1533 .pm = &rsi_pm_ops,
1534 .shutdown = rsi_shutdown,
1535 }
1536 #endif
1537 };
1538
1539 /**
1540 * rsi_module_init() - This function registers the sdio module.
1541 * @void: Void.
1542 *
1543 * Return: 0 on success.
1544 */
rsi_module_init(void)1545 static int rsi_module_init(void)
1546 {
1547 int ret;
1548
1549 ret = sdio_register_driver(&rsi_driver);
1550 rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__);
1551 return ret;
1552 }
1553
1554 /**
1555 * rsi_module_exit() - This function unregisters the sdio module.
1556 * @void: Void.
1557 *
1558 * Return: None.
1559 */
rsi_module_exit(void)1560 static void rsi_module_exit(void)
1561 {
1562 sdio_unregister_driver(&rsi_driver);
1563 rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__);
1564 }
1565
1566 module_init(rsi_module_init);
1567 module_exit(rsi_module_exit);
1568
1569 MODULE_AUTHOR("Redpine Signals Inc");
1570 MODULE_DESCRIPTION("Common SDIO layer for RSI drivers");
1571 MODULE_DEVICE_TABLE(sdio, rsi_dev_table);
1572 MODULE_FIRMWARE(FIRMWARE_RSI9113);
1573 MODULE_VERSION("0.1");
1574 MODULE_LICENSE("Dual BSD/GPL");
1575