Version:  2.0.40 2.2.26 2.4.37 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19

Linux/drivers/bluetooth/btmrvl_sdio.c

  1 /**
  2  * Marvell BT-over-SDIO driver: SDIO interface related functions.
  3  *
  4  * Copyright (C) 2009, Marvell International Ltd.
  5  *
  6  * This software file (the "File") is distributed by Marvell International
  7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
  8  * (the "License").  You may use, redistribute and/or modify this File in
  9  * accordance with the terms and conditions of the License, a copy of which
 10  * is available by writing to the Free Software Foundation, Inc.,
 11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 13  *
 14  *
 15  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 16  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 17  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 18  * this warranty disclaimer.
 19  **/
 20 
 21 #include <linux/firmware.h>
 22 #include <linux/slab.h>
 23 
 24 #include <linux/mmc/sdio_ids.h>
 25 #include <linux/mmc/sdio_func.h>
 26 #include <linux/module.h>
 27 #include <linux/devcoredump.h>
 28 
 29 #include <net/bluetooth/bluetooth.h>
 30 #include <net/bluetooth/hci_core.h>
 31 
 32 #include "btmrvl_drv.h"
 33 #include "btmrvl_sdio.h"
 34 
 35 #define VERSION "1.0"
 36 
 37 static struct memory_type_mapping mem_type_mapping_tbl[] = {
 38         {"ITCM", NULL, 0, 0xF0},
 39         {"DTCM", NULL, 0, 0xF1},
 40         {"SQRAM", NULL, 0, 0xF2},
 41         {"APU", NULL, 0, 0xF3},
 42         {"CIU", NULL, 0, 0xF4},
 43         {"ICU", NULL, 0, 0xF5},
 44         {"MAC", NULL, 0, 0xF6},
 45         {"EXT7", NULL, 0, 0xF7},
 46         {"EXT8", NULL, 0, 0xF8},
 47         {"EXT9", NULL, 0, 0xF9},
 48         {"EXT10", NULL, 0, 0xFA},
 49         {"EXT11", NULL, 0, 0xFB},
 50         {"EXT12", NULL, 0, 0xFC},
 51         {"EXT13", NULL, 0, 0xFD},
 52         {"EXTLAST", NULL, 0, 0xFE},
 53 };
 54 
 55 /* The btmrvl_sdio_remove() callback function is called
 56  * when user removes this module from kernel space or ejects
 57  * the card from the slot. The driver handles these 2 cases
 58  * differently.
 59  * If the user is removing the module, a MODULE_SHUTDOWN_REQ
 60  * command is sent to firmware and interrupt will be disabled.
 61  * If the card is removed, there is no need to send command
 62  * or disable interrupt.
 63  *
 64  * The variable 'user_rmmod' is used to distinguish these two
 65  * scenarios. This flag is initialized as FALSE in case the card
 66  * is removed, and will be set to TRUE for module removal when
 67  * module_exit function is called.
 68  */
 69 static u8 user_rmmod;
 70 static u8 sdio_ireg;
 71 
 72 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
 73         .cfg = 0x03,
 74         .host_int_mask = 0x04,
 75         .host_intstatus = 0x05,
 76         .card_status = 0x20,
 77         .sq_read_base_addr_a0 = 0x10,
 78         .sq_read_base_addr_a1 = 0x11,
 79         .card_fw_status0 = 0x40,
 80         .card_fw_status1 = 0x41,
 81         .card_rx_len = 0x42,
 82         .card_rx_unit = 0x43,
 83         .io_port_0 = 0x00,
 84         .io_port_1 = 0x01,
 85         .io_port_2 = 0x02,
 86         .int_read_to_clear = false,
 87 };
 88 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
 89         .cfg = 0x00,
 90         .host_int_mask = 0x02,
 91         .host_intstatus = 0x03,
 92         .card_status = 0x30,
 93         .sq_read_base_addr_a0 = 0x40,
 94         .sq_read_base_addr_a1 = 0x41,
 95         .card_revision = 0x5c,
 96         .card_fw_status0 = 0x60,
 97         .card_fw_status1 = 0x61,
 98         .card_rx_len = 0x62,
 99         .card_rx_unit = 0x63,
100         .io_port_0 = 0x78,
101         .io_port_1 = 0x79,
102         .io_port_2 = 0x7a,
103         .int_read_to_clear = false,
104 };
105 
106 static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
107         .cfg = 0x00,
108         .host_int_mask = 0x08,
109         .host_intstatus = 0x0C,
110         .card_status = 0x5C,
111         .sq_read_base_addr_a0 = 0x6C,
112         .sq_read_base_addr_a1 = 0x6D,
113         .card_revision = 0xC8,
114         .card_fw_status0 = 0x88,
115         .card_fw_status1 = 0x89,
116         .card_rx_len = 0x8A,
117         .card_rx_unit = 0x8B,
118         .io_port_0 = 0xE4,
119         .io_port_1 = 0xE5,
120         .io_port_2 = 0xE6,
121         .int_read_to_clear = true,
122         .host_int_rsr = 0x04,
123         .card_misc_cfg = 0xD8,
124 };
125 
126 static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
127         .cfg = 0x00,
128         .host_int_mask = 0x02,
129         .host_intstatus = 0x03,
130         .card_status = 0x50,
131         .sq_read_base_addr_a0 = 0x60,
132         .sq_read_base_addr_a1 = 0x61,
133         .card_revision = 0xbc,
134         .card_fw_status0 = 0xc0,
135         .card_fw_status1 = 0xc1,
136         .card_rx_len = 0xc2,
137         .card_rx_unit = 0xc3,
138         .io_port_0 = 0xd8,
139         .io_port_1 = 0xd9,
140         .io_port_2 = 0xda,
141         .int_read_to_clear = true,
142         .host_int_rsr = 0x01,
143         .card_misc_cfg = 0xcc,
144         .fw_dump_ctrl = 0xe2,
145         .fw_dump_start = 0xe3,
146         .fw_dump_end = 0xea,
147 };
148 
149 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
150         .helper         = "mrvl/sd8688_helper.bin",
151         .firmware       = "mrvl/sd8688.bin",
152         .reg            = &btmrvl_reg_8688,
153         .support_pscan_win_report = false,
154         .sd_blksz_fw_dl = 64,
155         .supports_fw_dump = false,
156 };
157 
158 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
159         .helper         = NULL,
160         .firmware       = "mrvl/sd8787_uapsta.bin",
161         .reg            = &btmrvl_reg_87xx,
162         .support_pscan_win_report = false,
163         .sd_blksz_fw_dl = 256,
164         .supports_fw_dump = false,
165 };
166 
167 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
168         .helper         = NULL,
169         .firmware       = "mrvl/sd8797_uapsta.bin",
170         .reg            = &btmrvl_reg_87xx,
171         .support_pscan_win_report = false,
172         .sd_blksz_fw_dl = 256,
173         .supports_fw_dump = false,
174 };
175 
176 static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
177         .helper         = NULL,
178         .firmware       = "mrvl/sd8887_uapsta.bin",
179         .reg            = &btmrvl_reg_8887,
180         .support_pscan_win_report = true,
181         .sd_blksz_fw_dl = 256,
182         .supports_fw_dump = false,
183 };
184 
185 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
186         .helper         = NULL,
187         .firmware       = "mrvl/sd8897_uapsta.bin",
188         .reg            = &btmrvl_reg_8897,
189         .support_pscan_win_report = true,
190         .sd_blksz_fw_dl = 256,
191         .supports_fw_dump = true,
192 };
193 
194 static const struct sdio_device_id btmrvl_sdio_ids[] = {
195         /* Marvell SD8688 Bluetooth device */
196         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
197                         .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
198         /* Marvell SD8787 Bluetooth device */
199         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
200                         .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
201         /* Marvell SD8787 Bluetooth AMP device */
202         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
203                         .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
204         /* Marvell SD8797 Bluetooth device */
205         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
206                         .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
207         /* Marvell SD8887 Bluetooth device */
208         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
209                         .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
210         /* Marvell SD8897 Bluetooth device */
211         { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
212                         .driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
213 
214         { }     /* Terminating entry */
215 };
216 
217 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
218 
219 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
220 {
221         u8 reg;
222         int ret;
223 
224         reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
225         if (!ret)
226                 card->rx_unit = reg;
227 
228         return ret;
229 }
230 
231 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
232 {
233         u8 fws0, fws1;
234         int ret;
235 
236         *dat = 0;
237 
238         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
239         if (ret)
240                 return -EIO;
241 
242         fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
243         if (ret)
244                 return -EIO;
245 
246         *dat = (((u16) fws1) << 8) | fws0;
247 
248         return 0;
249 }
250 
251 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
252 {
253         u8 reg;
254         int ret;
255 
256         reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
257         if (!ret)
258                 *dat = (u16) reg << card->rx_unit;
259 
260         return ret;
261 }
262 
263 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
264                                                                 u8 mask)
265 {
266         int ret;
267 
268         sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
269         if (ret) {
270                 BT_ERR("Unable to enable the host interrupt!");
271                 ret = -EIO;
272         }
273 
274         return ret;
275 }
276 
277 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
278                                                                 u8 mask)
279 {
280         u8 host_int_mask;
281         int ret;
282 
283         host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
284         if (ret)
285                 return -EIO;
286 
287         host_int_mask &= ~mask;
288 
289         sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
290         if (ret < 0) {
291                 BT_ERR("Unable to disable the host interrupt!");
292                 return -EIO;
293         }
294 
295         return 0;
296 }
297 
298 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
299 {
300         unsigned int tries;
301         u8 status;
302         int ret;
303 
304         for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
305                 status = sdio_readb(card->func, card->reg->card_status, &ret);
306                 if (ret)
307                         goto failed;
308                 if ((status & bits) == bits)
309                         return ret;
310 
311                 udelay(1);
312         }
313 
314         ret = -ETIMEDOUT;
315 
316 failed:
317         BT_ERR("FAILED! ret=%d", ret);
318 
319         return ret;
320 }
321 
322 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
323                                                                 int pollnum)
324 {
325         u16 firmwarestat;
326         int tries, ret;
327 
328          /* Wait for firmware to become ready */
329         for (tries = 0; tries < pollnum; tries++) {
330                 sdio_claim_host(card->func);
331                 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
332                 sdio_release_host(card->func);
333                 if (ret < 0)
334                         continue;
335 
336                 if (firmwarestat == FIRMWARE_READY)
337                         return 0;
338 
339                 msleep(10);
340         }
341 
342         return -ETIMEDOUT;
343 }
344 
345 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
346 {
347         const struct firmware *fw_helper = NULL;
348         const u8 *helper = NULL;
349         int ret;
350         void *tmphlprbuf = NULL;
351         int tmphlprbufsz, hlprblknow, helperlen;
352         u8 *helperbuf;
353         u32 tx_len;
354 
355         ret = request_firmware(&fw_helper, card->helper,
356                                                 &card->func->dev);
357         if ((ret < 0) || !fw_helper) {
358                 BT_ERR("request_firmware(helper) failed, error code = %d",
359                                                                         ret);
360                 ret = -ENOENT;
361                 goto done;
362         }
363 
364         helper = fw_helper->data;
365         helperlen = fw_helper->size;
366 
367         BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
368                                                 helperlen, SDIO_BLOCK_SIZE);
369 
370         tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
371 
372         tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
373         if (!tmphlprbuf) {
374                 BT_ERR("Unable to allocate buffer for helper."
375                         " Terminating download");
376                 ret = -ENOMEM;
377                 goto done;
378         }
379 
380         helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
381 
382         /* Perform helper data transfer */
383         tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
384                         - SDIO_HEADER_LEN;
385         hlprblknow = 0;
386 
387         do {
388                 ret = btmrvl_sdio_poll_card_status(card,
389                                             CARD_IO_READY | DN_LD_CARD_RDY);
390                 if (ret < 0) {
391                         BT_ERR("Helper download poll status timeout @ %d",
392                                 hlprblknow);
393                         goto done;
394                 }
395 
396                 /* Check if there is more data? */
397                 if (hlprblknow >= helperlen)
398                         break;
399 
400                 if (helperlen - hlprblknow < tx_len)
401                         tx_len = helperlen - hlprblknow;
402 
403                 /* Little-endian */
404                 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
405                 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
406                 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
407                 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
408 
409                 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
410                                 tx_len);
411 
412                 /* Now send the data */
413                 ret = sdio_writesb(card->func, card->ioport, helperbuf,
414                                 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
415                 if (ret < 0) {
416                         BT_ERR("IO error during helper download @ %d",
417                                 hlprblknow);
418                         goto done;
419                 }
420 
421                 hlprblknow += tx_len;
422         } while (true);
423 
424         BT_DBG("Transferring helper image EOF block");
425 
426         memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
427 
428         ret = sdio_writesb(card->func, card->ioport, helperbuf,
429                                                         SDIO_BLOCK_SIZE);
430         if (ret < 0) {
431                 BT_ERR("IO error in writing helper image EOF block");
432                 goto done;
433         }
434 
435         ret = 0;
436 
437 done:
438         kfree(tmphlprbuf);
439         release_firmware(fw_helper);
440         return ret;
441 }
442 
443 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
444 {
445         const struct firmware *fw_firmware = NULL;
446         const u8 *firmware = NULL;
447         int firmwarelen, tmpfwbufsz, ret;
448         unsigned int tries, offset;
449         u8 base0, base1;
450         void *tmpfwbuf = NULL;
451         u8 *fwbuf;
452         u16 len, blksz_dl = card->sd_blksz_fw_dl;
453         int txlen = 0, tx_blocks = 0, count = 0;
454 
455         ret = request_firmware(&fw_firmware, card->firmware,
456                                                         &card->func->dev);
457         if ((ret < 0) || !fw_firmware) {
458                 BT_ERR("request_firmware(firmware) failed, error code = %d",
459                                                                         ret);
460                 ret = -ENOENT;
461                 goto done;
462         }
463 
464         firmware = fw_firmware->data;
465         firmwarelen = fw_firmware->size;
466 
467         BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
468 
469         tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
470         tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
471         if (!tmpfwbuf) {
472                 BT_ERR("Unable to allocate buffer for firmware."
473                        " Terminating download");
474                 ret = -ENOMEM;
475                 goto done;
476         }
477 
478         /* Ensure aligned firmware buffer */
479         fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
480 
481         /* Perform firmware data transfer */
482         offset = 0;
483         do {
484                 ret = btmrvl_sdio_poll_card_status(card,
485                                         CARD_IO_READY | DN_LD_CARD_RDY);
486                 if (ret < 0) {
487                         BT_ERR("FW download with helper poll status"
488                                                 " timeout @ %d", offset);
489                         goto done;
490                 }
491 
492                 /* Check if there is more data ? */
493                 if (offset >= firmwarelen)
494                         break;
495 
496                 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
497                         base0 = sdio_readb(card->func,
498                                         card->reg->sq_read_base_addr_a0, &ret);
499                         if (ret) {
500                                 BT_ERR("BASE0 register read failed:"
501                                         " base0 = 0x%04X(%d)."
502                                         " Terminating download",
503                                         base0, base0);
504                                 ret = -EIO;
505                                 goto done;
506                         }
507                         base1 = sdio_readb(card->func,
508                                         card->reg->sq_read_base_addr_a1, &ret);
509                         if (ret) {
510                                 BT_ERR("BASE1 register read failed:"
511                                         " base1 = 0x%04X(%d)."
512                                         " Terminating download",
513                                         base1, base1);
514                                 ret = -EIO;
515                                 goto done;
516                         }
517 
518                         len = (((u16) base1) << 8) | base0;
519                         if (len)
520                                 break;
521 
522                         udelay(10);
523                 }
524 
525                 if (!len)
526                         break;
527                 else if (len > BTM_UPLD_SIZE) {
528                         BT_ERR("FW download failure @%d, invalid length %d",
529                                                                 offset, len);
530                         ret = -EINVAL;
531                         goto done;
532                 }
533 
534                 txlen = len;
535 
536                 if (len & BIT(0)) {
537                         count++;
538                         if (count > MAX_WRITE_IOMEM_RETRY) {
539                                 BT_ERR("FW download failure @%d, "
540                                         "over max retry count", offset);
541                                 ret = -EIO;
542                                 goto done;
543                         }
544                         BT_ERR("FW CRC error indicated by the helper: "
545                                 "len = 0x%04X, txlen = %d", len, txlen);
546                         len &= ~BIT(0);
547                         /* Set txlen to 0 so as to resend from same offset */
548                         txlen = 0;
549                 } else {
550                         count = 0;
551 
552                         /* Last block ? */
553                         if (firmwarelen - offset < txlen)
554                                 txlen = firmwarelen - offset;
555 
556                         tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
557 
558                         memcpy(fwbuf, &firmware[offset], txlen);
559                 }
560 
561                 ret = sdio_writesb(card->func, card->ioport, fwbuf,
562                                                 tx_blocks * blksz_dl);
563 
564                 if (ret < 0) {
565                         BT_ERR("FW download, writesb(%d) failed @%d",
566                                                         count, offset);
567                         sdio_writeb(card->func, HOST_CMD53_FIN,
568                                                 card->reg->cfg, &ret);
569                         if (ret)
570                                 BT_ERR("writeb failed (CFG)");
571                 }
572 
573                 offset += txlen;
574         } while (true);
575 
576         BT_DBG("FW download over, size %d bytes", offset);
577 
578         ret = 0;
579 
580 done:
581         kfree(tmpfwbuf);
582         release_firmware(fw_firmware);
583         return ret;
584 }
585 
586 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
587 {
588         u16 buf_len = 0;
589         int ret, num_blocks, blksz;
590         struct sk_buff *skb = NULL;
591         u32 type;
592         u8 *payload = NULL;
593         struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
594         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
595 
596         if (!card || !card->func) {
597                 BT_ERR("card or function is NULL!");
598                 ret = -EINVAL;
599                 goto exit;
600         }
601 
602         /* Read the length of data to be transferred */
603         ret = btmrvl_sdio_read_rx_len(card, &buf_len);
604         if (ret < 0) {
605                 BT_ERR("read rx_len failed");
606                 ret = -EIO;
607                 goto exit;
608         }
609 
610         blksz = SDIO_BLOCK_SIZE;
611         num_blocks = DIV_ROUND_UP(buf_len, blksz);
612 
613         if (buf_len <= SDIO_HEADER_LEN
614             || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
615                 BT_ERR("invalid packet length: %d", buf_len);
616                 ret = -EINVAL;
617                 goto exit;
618         }
619 
620         /* Allocate buffer */
621         skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
622         if (skb == NULL) {
623                 BT_ERR("No free skb");
624                 ret = -ENOMEM;
625                 goto exit;
626         }
627 
628         if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
629                 skb_put(skb, (unsigned long) skb->data &
630                                         (BTSDIO_DMA_ALIGN - 1));
631                 skb_pull(skb, (unsigned long) skb->data &
632                                         (BTSDIO_DMA_ALIGN - 1));
633         }
634 
635         payload = skb->data;
636 
637         ret = sdio_readsb(card->func, payload, card->ioport,
638                           num_blocks * blksz);
639         if (ret < 0) {
640                 BT_ERR("readsb failed: %d", ret);
641                 ret = -EIO;
642                 goto exit;
643         }
644 
645         /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
646          * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
647          */
648 
649         buf_len = payload[0];
650         buf_len |= payload[1] << 8;
651         buf_len |= payload[2] << 16;
652 
653         if (buf_len > blksz * num_blocks) {
654                 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
655                        buf_len, blksz * num_blocks);
656                 ret = -EIO;
657                 goto exit;
658         }
659 
660         type = payload[3];
661 
662         switch (type) {
663         case HCI_ACLDATA_PKT:
664         case HCI_SCODATA_PKT:
665         case HCI_EVENT_PKT:
666                 bt_cb(skb)->pkt_type = type;
667                 skb_put(skb, buf_len);
668                 skb_pull(skb, SDIO_HEADER_LEN);
669 
670                 if (type == HCI_EVENT_PKT) {
671                         if (btmrvl_check_evtpkt(priv, skb))
672                                 hci_recv_frame(hdev, skb);
673                 } else {
674                         hci_recv_frame(hdev, skb);
675                 }
676 
677                 hdev->stat.byte_rx += buf_len;
678                 break;
679 
680         case MRVL_VENDOR_PKT:
681                 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
682                 skb_put(skb, buf_len);
683                 skb_pull(skb, SDIO_HEADER_LEN);
684 
685                 if (btmrvl_process_event(priv, skb))
686                         hci_recv_frame(hdev, skb);
687 
688                 hdev->stat.byte_rx += buf_len;
689                 break;
690 
691         default:
692                 BT_ERR("Unknown packet type:%d", type);
693                 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
694 
695                 kfree_skb(skb);
696                 skb = NULL;
697                 break;
698         }
699 
700 exit:
701         if (ret) {
702                 hdev->stat.err_rx++;
703                 kfree_skb(skb);
704         }
705 
706         return ret;
707 }
708 
709 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
710 {
711         ulong flags;
712         u8 ireg;
713         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
714 
715         spin_lock_irqsave(&priv->driver_lock, flags);
716         ireg = sdio_ireg;
717         sdio_ireg = 0;
718         spin_unlock_irqrestore(&priv->driver_lock, flags);
719 
720         sdio_claim_host(card->func);
721         if (ireg & DN_LD_HOST_INT_STATUS) {
722                 if (priv->btmrvl_dev.tx_dnld_rdy)
723                         BT_DBG("tx_done already received: "
724                                 " int_status=0x%x", ireg);
725                 else
726                         priv->btmrvl_dev.tx_dnld_rdy = true;
727         }
728 
729         if (ireg & UP_LD_HOST_INT_STATUS)
730                 btmrvl_sdio_card_to_host(priv);
731 
732         sdio_release_host(card->func);
733 
734         return 0;
735 }
736 
737 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
738 {
739         struct btmrvl_adapter *adapter = card->priv->adapter;
740         int ret;
741 
742         ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
743         if (ret) {
744                 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
745                 return ret;
746         }
747 
748         *ireg = adapter->hw_regs[card->reg->host_intstatus];
749         BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
750 
751         return 0;
752 }
753 
754 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
755 {
756         int ret;
757 
758         *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
759         if (ret) {
760                 BT_ERR("sdio_readb: read int status failed: %d", ret);
761                 return ret;
762         }
763 
764         if (*ireg) {
765                 /*
766                  * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
767                  * Clear the interrupt status register and re-enable the
768                  * interrupt.
769                  */
770                 BT_DBG("int_status = 0x%x", *ireg);
771 
772                 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
773                                                     UP_LD_HOST_INT_STATUS),
774                             card->reg->host_intstatus, &ret);
775                 if (ret) {
776                         BT_ERR("sdio_writeb: clear int status failed: %d", ret);
777                         return ret;
778                 }
779         }
780 
781         return 0;
782 }
783 
784 static void btmrvl_sdio_interrupt(struct sdio_func *func)
785 {
786         struct btmrvl_private *priv;
787         struct btmrvl_sdio_card *card;
788         ulong flags;
789         u8 ireg = 0;
790         int ret;
791 
792         card = sdio_get_drvdata(func);
793         if (!card || !card->priv) {
794                 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
795                        func, card);
796                 return;
797         }
798 
799         priv = card->priv;
800 
801         if (card->reg->int_read_to_clear)
802                 ret = btmrvl_sdio_read_to_clear(card, &ireg);
803         else
804                 ret = btmrvl_sdio_write_to_clear(card, &ireg);
805 
806         if (ret)
807                 return;
808 
809         spin_lock_irqsave(&priv->driver_lock, flags);
810         sdio_ireg |= ireg;
811         spin_unlock_irqrestore(&priv->driver_lock, flags);
812 
813         btmrvl_interrupt(priv);
814 }
815 
816 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
817 {
818         struct sdio_func *func;
819         u8 reg;
820         int ret = 0;
821 
822         if (!card || !card->func) {
823                 BT_ERR("Error: card or function is NULL!");
824                 ret = -EINVAL;
825                 goto failed;
826         }
827 
828         func = card->func;
829 
830         sdio_claim_host(func);
831 
832         ret = sdio_enable_func(func);
833         if (ret) {
834                 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
835                 ret = -EIO;
836                 goto release_host;
837         }
838 
839         ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
840         if (ret) {
841                 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
842                 ret = -EIO;
843                 goto disable_func;
844         }
845 
846         ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
847         if (ret) {
848                 BT_ERR("cannot set SDIO block size");
849                 ret = -EIO;
850                 goto release_irq;
851         }
852 
853         reg = sdio_readb(func, card->reg->io_port_0, &ret);
854         if (ret < 0) {
855                 ret = -EIO;
856                 goto release_irq;
857         }
858 
859         card->ioport = reg;
860 
861         reg = sdio_readb(func, card->reg->io_port_1, &ret);
862         if (ret < 0) {
863                 ret = -EIO;
864                 goto release_irq;
865         }
866 
867         card->ioport |= (reg << 8);
868 
869         reg = sdio_readb(func, card->reg->io_port_2, &ret);
870         if (ret < 0) {
871                 ret = -EIO;
872                 goto release_irq;
873         }
874 
875         card->ioport |= (reg << 16);
876 
877         BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
878 
879         if (card->reg->int_read_to_clear) {
880                 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
881                 if (ret < 0) {
882                         ret = -EIO;
883                         goto release_irq;
884                 }
885                 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
886                 if (ret < 0) {
887                         ret = -EIO;
888                         goto release_irq;
889                 }
890 
891                 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
892                 if (ret < 0) {
893                         ret = -EIO;
894                         goto release_irq;
895                 }
896                 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
897                 if (ret < 0) {
898                         ret = -EIO;
899                         goto release_irq;
900                 }
901         }
902 
903         sdio_set_drvdata(func, card);
904 
905         sdio_release_host(func);
906 
907         return 0;
908 
909 release_irq:
910         sdio_release_irq(func);
911 
912 disable_func:
913         sdio_disable_func(func);
914 
915 release_host:
916         sdio_release_host(func);
917 
918 failed:
919         return ret;
920 }
921 
922 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
923 {
924         if (card && card->func) {
925                 sdio_claim_host(card->func);
926                 sdio_release_irq(card->func);
927                 sdio_disable_func(card->func);
928                 sdio_release_host(card->func);
929                 sdio_set_drvdata(card->func, NULL);
930         }
931 
932         return 0;
933 }
934 
935 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
936 {
937         int ret;
938 
939         if (!card || !card->func)
940                 return -EINVAL;
941 
942         sdio_claim_host(card->func);
943 
944         ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
945 
946         btmrvl_sdio_get_rx_unit(card);
947 
948         sdio_release_host(card->func);
949 
950         return ret;
951 }
952 
953 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
954 {
955         int ret;
956 
957         if (!card || !card->func)
958                 return -EINVAL;
959 
960         sdio_claim_host(card->func);
961 
962         ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
963 
964         sdio_release_host(card->func);
965 
966         return ret;
967 }
968 
969 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
970                                 u8 *payload, u16 nb)
971 {
972         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
973         int ret = 0;
974         int buf_block_len;
975         int blksz;
976         int i = 0;
977         u8 *buf = NULL;
978         void *tmpbuf = NULL;
979         int tmpbufsz;
980 
981         if (!card || !card->func) {
982                 BT_ERR("card or function is NULL!");
983                 return -EINVAL;
984         }
985 
986         buf = payload;
987         if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
988                 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
989                 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
990                 if (!tmpbuf)
991                         return -ENOMEM;
992                 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
993                 memcpy(buf, payload, nb);
994         }
995 
996         blksz = SDIO_BLOCK_SIZE;
997         buf_block_len = DIV_ROUND_UP(nb, blksz);
998 
999         sdio_claim_host(card->func);
1000 
1001         do {
1002                 /* Transfer data to card */
1003                 ret = sdio_writesb(card->func, card->ioport, buf,
1004                                    buf_block_len * blksz);
1005                 if (ret < 0) {
1006                         i++;
1007                         BT_ERR("i=%d writesb failed: %d", i, ret);
1008                         BT_ERR("hex: %*ph", nb, payload);
1009                         ret = -EIO;
1010                         if (i > MAX_WRITE_IOMEM_RETRY)
1011                                 goto exit;
1012                 }
1013         } while (ret);
1014 
1015         priv->btmrvl_dev.tx_dnld_rdy = false;
1016 
1017 exit:
1018         sdio_release_host(card->func);
1019         kfree(tmpbuf);
1020 
1021         return ret;
1022 }
1023 
1024 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1025 {
1026         int ret;
1027         u8 fws0;
1028         int pollnum = MAX_POLL_TRIES;
1029 
1030         if (!card || !card->func) {
1031                 BT_ERR("card or function is NULL!");
1032                 return -EINVAL;
1033         }
1034 
1035         if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1036                 BT_DBG("Firmware already downloaded!");
1037                 return 0;
1038         }
1039 
1040         sdio_claim_host(card->func);
1041 
1042         /* Check if other function driver is downloading the firmware */
1043         fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1044         if (ret) {
1045                 BT_ERR("Failed to read FW downloading status!");
1046                 ret = -EIO;
1047                 goto done;
1048         }
1049         if (fws0) {
1050                 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1051 
1052                 /* Give other function more time to download the firmware */
1053                 pollnum *= 10;
1054         } else {
1055                 if (card->helper) {
1056                         ret = btmrvl_sdio_download_helper(card);
1057                         if (ret) {
1058                                 BT_ERR("Failed to download helper!");
1059                                 ret = -EIO;
1060                                 goto done;
1061                         }
1062                 }
1063 
1064                 if (btmrvl_sdio_download_fw_w_helper(card)) {
1065                         BT_ERR("Failed to download firmware!");
1066                         ret = -EIO;
1067                         goto done;
1068                 }
1069         }
1070 
1071         sdio_release_host(card->func);
1072 
1073         /*
1074          * winner or not, with this test the FW synchronizes when the
1075          * module can continue its initialization
1076          */
1077         if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1078                 BT_ERR("FW failed to be active in time!");
1079                 return -ETIMEDOUT;
1080         }
1081 
1082         return 0;
1083 
1084 done:
1085         sdio_release_host(card->func);
1086         return ret;
1087 }
1088 
1089 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1090 {
1091         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1092         int ret = 0;
1093 
1094         if (!card || !card->func) {
1095                 BT_ERR("card or function is NULL!");
1096                 return -EINVAL;
1097         }
1098 
1099         sdio_claim_host(card->func);
1100 
1101         sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1102 
1103         sdio_release_host(card->func);
1104 
1105         BT_DBG("wake up firmware");
1106 
1107         return ret;
1108 }
1109 
1110 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1111 {
1112         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1113         int ret = 0;
1114         unsigned int reg, reg_start, reg_end;
1115         char buf[256], *ptr;
1116         u8 loop, func, data;
1117         int MAX_LOOP = 2;
1118 
1119         btmrvl_sdio_wakeup_fw(priv);
1120         sdio_claim_host(card->func);
1121 
1122         for (loop = 0; loop < MAX_LOOP; loop++) {
1123                 memset(buf, 0, sizeof(buf));
1124                 ptr = buf;
1125 
1126                 if (loop == 0) {
1127                         /* Read the registers of SDIO function0 */
1128                         func = loop;
1129                         reg_start = 0;
1130                         reg_end = 9;
1131                 } else {
1132                         func = 2;
1133                         reg_start = 0;
1134                         reg_end = 0x09;
1135                 }
1136 
1137                 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1138                                func, reg_start, reg_end);
1139                 for (reg = reg_start; reg <= reg_end; reg++) {
1140                         if (func == 0)
1141                                 data = sdio_f0_readb(card->func, reg, &ret);
1142                         else
1143                                 data = sdio_readb(card->func, reg, &ret);
1144 
1145                         if (!ret) {
1146                                 ptr += sprintf(ptr, "%02x ", data);
1147                         } else {
1148                                 ptr += sprintf(ptr, "ERR");
1149                                 break;
1150                         }
1151                 }
1152 
1153                 BT_INFO("%s", buf);
1154         }
1155 
1156         sdio_release_host(card->func);
1157 }
1158 
1159 /* This function read/write firmware */
1160 static enum
1161 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1162                                       u8 doneflag)
1163 {
1164         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1165         int ret, tries;
1166         u8 ctrl_data = 0;
1167 
1168         sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1169                     &ret);
1170 
1171         if (ret) {
1172                 BT_ERR("SDIO write err");
1173                 return RDWR_STATUS_FAILURE;
1174         }
1175 
1176         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1177                 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1178                                        &ret);
1179 
1180                 if (ret) {
1181                         BT_ERR("SDIO read err");
1182                         return RDWR_STATUS_FAILURE;
1183                 }
1184 
1185                 if (ctrl_data == FW_DUMP_DONE)
1186                         break;
1187                 if (doneflag && ctrl_data == doneflag)
1188                         return RDWR_STATUS_DONE;
1189                 if (ctrl_data != FW_DUMP_HOST_READY) {
1190                         BT_INFO("The ctrl reg was changed, re-try again!");
1191                         sdio_writeb(card->func, FW_DUMP_HOST_READY,
1192                                     card->reg->fw_dump_ctrl, &ret);
1193                         if (ret) {
1194                                 BT_ERR("SDIO write err");
1195                                 return RDWR_STATUS_FAILURE;
1196                         }
1197                 }
1198                 usleep_range(100, 200);
1199         }
1200 
1201         if (ctrl_data == FW_DUMP_HOST_READY) {
1202                 BT_ERR("Fail to pull ctrl_data");
1203                 return RDWR_STATUS_FAILURE;
1204         }
1205 
1206         return RDWR_STATUS_SUCCESS;
1207 }
1208 
1209 /* This function dump sdio register and memory data */
1210 static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
1211 {
1212         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1213         int ret = 0;
1214         unsigned int reg, reg_start, reg_end;
1215         enum rdwr_status stat;
1216         u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1217         u8 dump_num, idx, i, read_reg, doneflag = 0;
1218         u32 memory_size, fw_dump_len = 0;
1219 
1220         /* dump sdio register first */
1221         btmrvl_sdio_dump_regs(priv);
1222 
1223         if (!card->supports_fw_dump) {
1224                 BT_ERR("Firmware dump not supported for this card!");
1225                 return;
1226         }
1227 
1228         for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1229                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1230 
1231                 if (entry->mem_ptr) {
1232                         vfree(entry->mem_ptr);
1233                         entry->mem_ptr = NULL;
1234                 }
1235                 entry->mem_size = 0;
1236         }
1237 
1238         btmrvl_sdio_wakeup_fw(priv);
1239         sdio_claim_host(card->func);
1240 
1241         BT_INFO("== btmrvl firmware dump start ==");
1242 
1243         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1244         if (stat == RDWR_STATUS_FAILURE)
1245                 goto done;
1246 
1247         reg = card->reg->fw_dump_start;
1248         /* Read the number of the memories which will dump */
1249         dump_num = sdio_readb(card->func, reg, &ret);
1250 
1251         if (ret) {
1252                 BT_ERR("SDIO read memory length err");
1253                 goto done;
1254         }
1255 
1256         /* Read the length of every memory which will dump */
1257         for (idx = 0; idx < dump_num; idx++) {
1258                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1259 
1260                 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1261                 if (stat == RDWR_STATUS_FAILURE)
1262                         goto done;
1263 
1264                 memory_size = 0;
1265                 reg = card->reg->fw_dump_start;
1266                 for (i = 0; i < 4; i++) {
1267                         read_reg = sdio_readb(card->func, reg, &ret);
1268                         if (ret) {
1269                                 BT_ERR("SDIO read err");
1270                                 goto done;
1271                         }
1272                         memory_size |= (read_reg << i*8);
1273                         reg++;
1274                 }
1275 
1276                 if (memory_size == 0) {
1277                         BT_INFO("Firmware dump finished!");
1278                         break;
1279                 }
1280 
1281                 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1282                 entry->mem_ptr = vzalloc(memory_size + 1);
1283                 entry->mem_size = memory_size;
1284                 if (!entry->mem_ptr) {
1285                         BT_ERR("Vzalloc %s failed", entry->mem_name);
1286                         goto done;
1287                 }
1288 
1289                 fw_dump_len += (strlen("========Start dump ") +
1290                                 strlen(entry->mem_name) +
1291                                 strlen("========\n") +
1292                                 (memory_size + 1) +
1293                                 strlen("\n========End dump========\n"));
1294 
1295                 dbg_ptr = entry->mem_ptr;
1296                 end_ptr = dbg_ptr + memory_size;
1297 
1298                 doneflag = entry->done_flag;
1299                 BT_INFO("Start %s output, please wait...",
1300                         entry->mem_name);
1301 
1302                 do {
1303                         stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1304                         if (stat == RDWR_STATUS_FAILURE)
1305                                 goto done;
1306 
1307                         reg_start = card->reg->fw_dump_start;
1308                         reg_end = card->reg->fw_dump_end;
1309                         for (reg = reg_start; reg <= reg_end; reg++) {
1310                                 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1311                                 if (ret) {
1312                                         BT_ERR("SDIO read err");
1313                                         goto done;
1314                                 }
1315                                 if (dbg_ptr < end_ptr)
1316                                         dbg_ptr++;
1317                                 else
1318                                         BT_ERR("Allocated buffer not enough");
1319                         }
1320 
1321                         if (stat != RDWR_STATUS_DONE) {
1322                                 continue;
1323                         } else {
1324                                 BT_INFO("%s done: size=0x%tx",
1325                                         entry->mem_name,
1326                                         dbg_ptr - entry->mem_ptr);
1327                                 break;
1328                         }
1329                 } while (1);
1330         }
1331 
1332         BT_INFO("== btmrvl firmware dump end ==");
1333 
1334 done:
1335         sdio_release_host(card->func);
1336 
1337         if (fw_dump_len == 0)
1338                 return;
1339 
1340         fw_dump_data = vzalloc(fw_dump_len+1);
1341         if (!fw_dump_data) {
1342                 BT_ERR("Vzalloc fw_dump_data fail!");
1343                 return;
1344         }
1345         fw_dump_ptr = fw_dump_data;
1346 
1347         /* Dump all the memory data into single file, a userspace script will
1348            be used to split all the memory data to multiple files*/
1349         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1350         for (idx = 0; idx < dump_num; idx++) {
1351                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1352 
1353                 if (entry->mem_ptr) {
1354                         strcpy(fw_dump_ptr, "========Start dump ");
1355                         fw_dump_ptr += strlen("========Start dump ");
1356 
1357                         strcpy(fw_dump_ptr, entry->mem_name);
1358                         fw_dump_ptr += strlen(entry->mem_name);
1359 
1360                         strcpy(fw_dump_ptr, "========\n");
1361                         fw_dump_ptr += strlen("========\n");
1362 
1363                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1364                         fw_dump_ptr += entry->mem_size;
1365 
1366                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1367                         fw_dump_ptr += strlen("\n========End dump========\n");
1368 
1369                         vfree(mem_type_mapping_tbl[idx].mem_ptr);
1370                         mem_type_mapping_tbl[idx].mem_ptr = NULL;
1371                 }
1372         }
1373 
1374         /* fw_dump_data will be free in device coredump release function
1375            after 5 min*/
1376         dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data,
1377                       fw_dump_len, GFP_KERNEL);
1378         BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1379 }
1380 
1381 static int btmrvl_sdio_probe(struct sdio_func *func,
1382                                         const struct sdio_device_id *id)
1383 {
1384         int ret = 0;
1385         struct btmrvl_private *priv = NULL;
1386         struct btmrvl_sdio_card *card = NULL;
1387 
1388         BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1389                         id->vendor, id->device, id->class, func->num);
1390 
1391         card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1392         if (!card)
1393                 return -ENOMEM;
1394 
1395         card->func = func;
1396 
1397         if (id->driver_data) {
1398                 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1399                 card->helper = data->helper;
1400                 card->firmware = data->firmware;
1401                 card->reg = data->reg;
1402                 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1403                 card->support_pscan_win_report = data->support_pscan_win_report;
1404                 card->supports_fw_dump = data->supports_fw_dump;
1405         }
1406 
1407         if (btmrvl_sdio_register_dev(card) < 0) {
1408                 BT_ERR("Failed to register BT device!");
1409                 return -ENODEV;
1410         }
1411 
1412         /* Disable the interrupts on the card */
1413         btmrvl_sdio_disable_host_int(card);
1414 
1415         if (btmrvl_sdio_download_fw(card)) {
1416                 BT_ERR("Downloading firmware failed!");
1417                 ret = -ENODEV;
1418                 goto unreg_dev;
1419         }
1420 
1421         btmrvl_sdio_enable_host_int(card);
1422 
1423         priv = btmrvl_add_card(card);
1424         if (!priv) {
1425                 BT_ERR("Initializing card failed!");
1426                 ret = -ENODEV;
1427                 goto disable_host_int;
1428         }
1429 
1430         card->priv = priv;
1431 
1432         /* Initialize the interface specific function pointers */
1433         priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1434         priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1435         priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1436         priv->firmware_dump = btmrvl_sdio_dump_firmware;
1437 
1438         if (btmrvl_register_hdev(priv)) {
1439                 BT_ERR("Register hdev failed!");
1440                 ret = -ENODEV;
1441                 goto disable_host_int;
1442         }
1443 
1444         return 0;
1445 
1446 disable_host_int:
1447         btmrvl_sdio_disable_host_int(card);
1448 unreg_dev:
1449         btmrvl_sdio_unregister_dev(card);
1450         return ret;
1451 }
1452 
1453 static void btmrvl_sdio_remove(struct sdio_func *func)
1454 {
1455         struct btmrvl_sdio_card *card;
1456 
1457         if (func) {
1458                 card = sdio_get_drvdata(func);
1459                 if (card) {
1460                         /* Send SHUTDOWN command & disable interrupt
1461                          * if user removes the module.
1462                          */
1463                         if (user_rmmod) {
1464                                 btmrvl_send_module_cfg_cmd(card->priv,
1465                                                         MODULE_SHUTDOWN_REQ);
1466                                 btmrvl_sdio_disable_host_int(card);
1467                         }
1468                         BT_DBG("unregester dev");
1469                         btmrvl_sdio_unregister_dev(card);
1470                         btmrvl_remove_card(card->priv);
1471                 }
1472         }
1473 }
1474 
1475 static int btmrvl_sdio_suspend(struct device *dev)
1476 {
1477         struct sdio_func *func = dev_to_sdio_func(dev);
1478         struct btmrvl_sdio_card *card;
1479         struct btmrvl_private *priv;
1480         mmc_pm_flag_t pm_flags;
1481         struct hci_dev *hcidev;
1482 
1483         if (func) {
1484                 pm_flags = sdio_get_host_pm_caps(func);
1485                 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1486                        pm_flags);
1487                 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1488                         BT_ERR("%s: cannot remain alive while suspended",
1489                                sdio_func_id(func));
1490                         return -ENOSYS;
1491                 }
1492                 card = sdio_get_drvdata(func);
1493                 if (!card || !card->priv) {
1494                         BT_ERR("card or priv structure is not valid");
1495                         return 0;
1496                 }
1497         } else {
1498                 BT_ERR("sdio_func is not specified");
1499                 return 0;
1500         }
1501 
1502         priv = card->priv;
1503         hcidev = priv->btmrvl_dev.hcidev;
1504         BT_DBG("%s: SDIO suspend", hcidev->name);
1505         hci_suspend_dev(hcidev);
1506         skb_queue_purge(&priv->adapter->tx_queue);
1507 
1508         if (priv->adapter->hs_state != HS_ACTIVATED) {
1509                 if (btmrvl_enable_hs(priv)) {
1510                         BT_ERR("HS not actived, suspend failed!");
1511                         return -EBUSY;
1512                 }
1513         }
1514 
1515         priv->adapter->is_suspended = true;
1516 
1517         /* We will keep the power when hs enabled successfully */
1518         if (priv->adapter->hs_state == HS_ACTIVATED) {
1519                 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1520                 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1521         } else {
1522                 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1523                 return 0;
1524         }
1525 }
1526 
1527 static int btmrvl_sdio_resume(struct device *dev)
1528 {
1529         struct sdio_func *func = dev_to_sdio_func(dev);
1530         struct btmrvl_sdio_card *card;
1531         struct btmrvl_private *priv;
1532         mmc_pm_flag_t pm_flags;
1533         struct hci_dev *hcidev;
1534 
1535         if (func) {
1536                 pm_flags = sdio_get_host_pm_caps(func);
1537                 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1538                        pm_flags);
1539                 card = sdio_get_drvdata(func);
1540                 if (!card || !card->priv) {
1541                         BT_ERR("card or priv structure is not valid");
1542                         return 0;
1543                 }
1544         } else {
1545                 BT_ERR("sdio_func is not specified");
1546                 return 0;
1547         }
1548         priv = card->priv;
1549 
1550         if (!priv->adapter->is_suspended) {
1551                 BT_DBG("device already resumed");
1552                 return 0;
1553         }
1554 
1555         priv->hw_wakeup_firmware(priv);
1556         priv->adapter->hs_state = HS_DEACTIVATED;
1557         hcidev = priv->btmrvl_dev.hcidev;
1558         BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1559         priv->adapter->is_suspended = false;
1560         BT_DBG("%s: SDIO resume", hcidev->name);
1561         hci_resume_dev(hcidev);
1562 
1563         return 0;
1564 }
1565 
1566 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1567         .suspend        = btmrvl_sdio_suspend,
1568         .resume         = btmrvl_sdio_resume,
1569 };
1570 
1571 static struct sdio_driver bt_mrvl_sdio = {
1572         .name           = "btmrvl_sdio",
1573         .id_table       = btmrvl_sdio_ids,
1574         .probe          = btmrvl_sdio_probe,
1575         .remove         = btmrvl_sdio_remove,
1576         .drv = {
1577                 .owner = THIS_MODULE,
1578                 .pm = &btmrvl_sdio_pm_ops,
1579         }
1580 };
1581 
1582 static int __init btmrvl_sdio_init_module(void)
1583 {
1584         if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1585                 BT_ERR("SDIO Driver Registration Failed");
1586                 return -ENODEV;
1587         }
1588 
1589         /* Clear the flag in case user removes the card. */
1590         user_rmmod = 0;
1591 
1592         return 0;
1593 }
1594 
1595 static void __exit btmrvl_sdio_exit_module(void)
1596 {
1597         /* Set the flag as user is removing this module. */
1598         user_rmmod = 1;
1599 
1600         sdio_unregister_driver(&bt_mrvl_sdio);
1601 }
1602 
1603 module_init(btmrvl_sdio_init_module);
1604 module_exit(btmrvl_sdio_exit_module);
1605 
1606 MODULE_AUTHOR("Marvell International Ltd.");
1607 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1608 MODULE_VERSION(VERSION);
1609 MODULE_LICENSE("GPL v2");
1610 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1611 MODULE_FIRMWARE("mrvl/sd8688.bin");
1612 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1613 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1614 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1615 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
1616 

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