xref: /linux/drivers/bluetooth/btqca.c (revision 964417a5d4a06614ef7fb3ae69bb17c91a2dc016)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  Bluetooth supports for Qualcomm Atheros chips
4  *
5  *  Copyright (c) 2015 The Linux Foundation. All rights reserved.
6  */
7 #include <linux/module.h>
8 #include <linux/firmware.h>
9 #include <linux/vmalloc.h>
10 
11 #include <net/bluetooth/bluetooth.h>
12 #include <net/bluetooth/hci_core.h>
13 
14 #include "btqca.h"
15 
16 int qca_read_soc_version(struct hci_dev *hdev, struct qca_btsoc_version *ver,
17 			 enum qca_btsoc_type soc_type)
18 {
19 	struct sk_buff *skb;
20 	struct edl_event_hdr *edl;
21 	char cmd;
22 	int err = 0;
23 	u8 event_type = HCI_EV_VENDOR;
24 	u8 rlen = sizeof(*edl) + sizeof(*ver);
25 	u8 rtype = EDL_APP_VER_RES_EVT;
26 
27 	bt_dev_dbg(hdev, "QCA Version Request");
28 
29 	/* Unlike other SoC's sending version command response as payload to
30 	 * VSE event. WCN3991 sends version command response as a payload to
31 	 * command complete event.
32 	 */
33 	if (soc_type >= QCA_WCN3991) {
34 		event_type = 0;
35 		rlen += 1;
36 		rtype = EDL_PATCH_VER_REQ_CMD;
37 	}
38 
39 	cmd = EDL_PATCH_VER_REQ_CMD;
40 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
41 				&cmd, event_type, HCI_INIT_TIMEOUT);
42 	if (IS_ERR(skb)) {
43 		err = PTR_ERR(skb);
44 		bt_dev_err(hdev, "Reading QCA version information failed (%d)",
45 			   err);
46 		return err;
47 	}
48 
49 	if (skb->len != rlen) {
50 		bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
51 		err = -EILSEQ;
52 		goto out;
53 	}
54 
55 	edl = (struct edl_event_hdr *)(skb->data);
56 
57 	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
58 	    edl->rtype != rtype) {
59 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
60 			   edl->rtype);
61 		err = -EIO;
62 		goto out;
63 	}
64 
65 	if (soc_type >= QCA_WCN3991)
66 		memcpy(ver, edl->data + 1, sizeof(*ver));
67 	else
68 		memcpy(ver, &edl->data, sizeof(*ver));
69 
70 	bt_dev_info(hdev, "QCA Product ID   :0x%08x",
71 		    le32_to_cpu(ver->product_id));
72 	bt_dev_info(hdev, "QCA SOC Version  :0x%08x",
73 		    le32_to_cpu(ver->soc_id));
74 	bt_dev_info(hdev, "QCA ROM Version  :0x%08x",
75 		    le16_to_cpu(ver->rom_ver));
76 	bt_dev_info(hdev, "QCA Patch Version:0x%08x",
77 		    le16_to_cpu(ver->patch_ver));
78 
79 	if (ver->soc_id == 0 || ver->rom_ver == 0)
80 		err = -EILSEQ;
81 
82 out:
83 	kfree_skb(skb);
84 	if (err)
85 		bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
86 
87 	return err;
88 }
89 EXPORT_SYMBOL_GPL(qca_read_soc_version);
90 
91 static int qca_read_fw_build_info(struct hci_dev *hdev)
92 {
93 	struct sk_buff *skb;
94 	struct edl_event_hdr *edl;
95 	char *build_label;
96 	char cmd;
97 	int build_lbl_len, err = 0;
98 
99 	bt_dev_dbg(hdev, "QCA read fw build info");
100 
101 	cmd = EDL_GET_BUILD_INFO_CMD;
102 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
103 				&cmd, 0, HCI_INIT_TIMEOUT);
104 	if (IS_ERR(skb)) {
105 		err = PTR_ERR(skb);
106 		bt_dev_err(hdev, "Reading QCA fw build info failed (%d)",
107 			   err);
108 		return err;
109 	}
110 
111 	if (skb->len < sizeof(*edl)) {
112 		err = -EILSEQ;
113 		goto out;
114 	}
115 
116 	edl = (struct edl_event_hdr *)(skb->data);
117 
118 	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
119 	    edl->rtype != EDL_GET_BUILD_INFO_CMD) {
120 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
121 			   edl->rtype);
122 		err = -EIO;
123 		goto out;
124 	}
125 
126 	if (skb->len < sizeof(*edl) + 1) {
127 		err = -EILSEQ;
128 		goto out;
129 	}
130 
131 	build_lbl_len = edl->data[0];
132 
133 	if (skb->len < sizeof(*edl) + 1 + build_lbl_len) {
134 		err = -EILSEQ;
135 		goto out;
136 	}
137 
138 	build_label = kstrndup(&edl->data[1], build_lbl_len, GFP_KERNEL);
139 	if (!build_label) {
140 		err = -ENOMEM;
141 		goto out;
142 	}
143 
144 	hci_set_fw_info(hdev, "%s", build_label);
145 
146 	kfree(build_label);
147 out:
148 	kfree_skb(skb);
149 	return err;
150 }
151 
152 static int qca_send_patch_config_cmd(struct hci_dev *hdev)
153 {
154 	const u8 cmd[] = { EDL_PATCH_CONFIG_CMD, 0x01, 0, 0, 0 };
155 	struct sk_buff *skb;
156 	struct edl_event_hdr *edl;
157 	int err;
158 
159 	bt_dev_dbg(hdev, "QCA Patch config");
160 
161 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, sizeof(cmd),
162 				cmd, 0, HCI_INIT_TIMEOUT);
163 	if (IS_ERR(skb)) {
164 		err = PTR_ERR(skb);
165 		bt_dev_err(hdev, "Sending QCA Patch config failed (%d)", err);
166 		return err;
167 	}
168 
169 	if (skb->len != 2) {
170 		bt_dev_err(hdev, "QCA Patch config cmd size mismatch len %d", skb->len);
171 		err = -EILSEQ;
172 		goto out;
173 	}
174 
175 	edl = (struct edl_event_hdr *)(skb->data);
176 
177 	if (edl->cresp != EDL_PATCH_CONFIG_RES_EVT || edl->rtype != EDL_PATCH_CONFIG_CMD) {
178 		bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
179 			   edl->rtype);
180 		err = -EIO;
181 		goto out;
182 	}
183 
184 	err = 0;
185 
186 out:
187 	kfree_skb(skb);
188 	return err;
189 }
190 
191 static int qca_send_reset(struct hci_dev *hdev)
192 {
193 	struct sk_buff *skb;
194 	int err;
195 
196 	bt_dev_dbg(hdev, "QCA HCI_RESET");
197 
198 	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
199 	if (IS_ERR(skb)) {
200 		err = PTR_ERR(skb);
201 		bt_dev_err(hdev, "QCA Reset failed (%d)", err);
202 		return err;
203 	}
204 
205 	kfree_skb(skb);
206 
207 	return 0;
208 }
209 
210 static int qca_read_fw_board_id(struct hci_dev *hdev, u16 *bid)
211 {
212 	u8 cmd;
213 	struct sk_buff *skb;
214 	struct edl_event_hdr *edl;
215 	int err = 0;
216 
217 	cmd = EDL_GET_BID_REQ_CMD;
218 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
219 				&cmd, 0, HCI_INIT_TIMEOUT);
220 	if (IS_ERR(skb)) {
221 		err = PTR_ERR(skb);
222 		bt_dev_err(hdev, "Reading QCA board ID failed (%d)", err);
223 		return err;
224 	}
225 
226 	edl = skb_pull_data(skb, sizeof(*edl));
227 	if (!edl) {
228 		bt_dev_err(hdev, "QCA read board ID with no header");
229 		err = -EILSEQ;
230 		goto out;
231 	}
232 
233 	if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
234 	    edl->rtype != EDL_GET_BID_REQ_CMD) {
235 		bt_dev_err(hdev, "QCA Wrong packet: %d %d", edl->cresp, edl->rtype);
236 		err = -EIO;
237 		goto out;
238 	}
239 
240 	if (skb->len < 3) {
241 		err = -EILSEQ;
242 		goto out;
243 	}
244 
245 	*bid = (edl->data[1] << 8) + edl->data[2];
246 	bt_dev_dbg(hdev, "%s: bid = %x", __func__, *bid);
247 
248 out:
249 	kfree_skb(skb);
250 	return err;
251 }
252 
253 int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
254 {
255 	struct sk_buff *skb;
256 	int err;
257 
258 	bt_dev_dbg(hdev, "QCA pre shutdown cmd");
259 
260 	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
261 				NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
262 
263 	if (IS_ERR(skb)) {
264 		err = PTR_ERR(skb);
265 		bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
266 		return err;
267 	}
268 
269 	kfree_skb(skb);
270 
271 	return 0;
272 }
273 EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
274 
275 static bool qca_filename_has_extension(const char *filename)
276 {
277 	const char *suffix = strrchr(filename, '.');
278 
279 	/* File extensions require a dot, but not as the first or last character */
280 	if (!suffix || suffix == filename || *(suffix + 1) == '\0')
281 		return 0;
282 
283 	/* Avoid matching directories with names that look like files with extensions */
284 	return !strchr(suffix, '/');
285 }
286 
287 static bool qca_get_alt_nvm_file(char *filename, size_t max_size)
288 {
289 	char fwname[64];
290 	const char *suffix;
291 
292 	/* nvm file name has an extension, replace with .bin */
293 	if (qca_filename_has_extension(filename)) {
294 		suffix = strrchr(filename, '.');
295 		strscpy(fwname, filename, suffix - filename + 1);
296 		snprintf(fwname + (suffix - filename),
297 		       sizeof(fwname) - (suffix - filename), ".bin");
298 		/* If nvm file is already the default one, return false to skip the retry. */
299 		if (strcmp(fwname, filename) == 0)
300 			return false;
301 
302 		snprintf(filename, max_size, "%s", fwname);
303 		return true;
304 	}
305 	return false;
306 }
307 
308 static int qca_tlv_check_data(struct hci_dev *hdev,
309 			       struct qca_fw_config *config,
310 			       u8 *fw_data, size_t fw_size,
311 			       enum qca_btsoc_type soc_type)
312 {
313 	const u8 *data;
314 	u32 type_len;
315 	u16 tag_id, tag_len;
316 	int idx, length;
317 	struct tlv_type_hdr *tlv;
318 	struct tlv_type_patch *tlv_patch;
319 	struct tlv_type_nvm *tlv_nvm;
320 	uint8_t nvm_baud_rate = config->user_baud_rate;
321 	u8 type;
322 
323 	config->dnld_mode = QCA_SKIP_EVT_NONE;
324 	config->dnld_type = QCA_SKIP_EVT_NONE;
325 
326 	switch (config->type) {
327 	case ELF_TYPE_PATCH:
328 		if (fw_size < 7)
329 			return -EINVAL;
330 
331 		config->dnld_mode = QCA_SKIP_EVT_VSE_CC;
332 		config->dnld_type = QCA_SKIP_EVT_VSE_CC;
333 
334 		bt_dev_dbg(hdev, "File Class        : 0x%x", fw_data[4]);
335 		bt_dev_dbg(hdev, "Data Encoding     : 0x%x", fw_data[5]);
336 		bt_dev_dbg(hdev, "File version      : 0x%x", fw_data[6]);
337 		break;
338 	case TLV_TYPE_PATCH:
339 		if (fw_size < sizeof(struct tlv_type_hdr) + sizeof(struct tlv_type_patch))
340 			return -EINVAL;
341 
342 		tlv = (struct tlv_type_hdr *)fw_data;
343 		type_len = le32_to_cpu(tlv->type_len);
344 		tlv_patch = (struct tlv_type_patch *)tlv->data;
345 
346 		/* For Rome version 1.1 to 3.1, all segment commands
347 		 * are acked by a vendor specific event (VSE).
348 		 * For Rome >= 3.2, the download mode field indicates
349 		 * if VSE is skipped by the controller.
350 		 * In case VSE is skipped, only the last segment is acked.
351 		 */
352 		config->dnld_mode = tlv_patch->download_mode;
353 		config->dnld_type = config->dnld_mode;
354 
355 		BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
356 		BT_DBG("Total Length           : %d bytes",
357 		       le32_to_cpu(tlv_patch->total_size));
358 		BT_DBG("Patch Data Length      : %d bytes",
359 		       le32_to_cpu(tlv_patch->data_length));
360 		BT_DBG("Signing Format Version : 0x%x",
361 		       tlv_patch->format_version);
362 		BT_DBG("Signature Algorithm    : 0x%x",
363 		       tlv_patch->signature);
364 		BT_DBG("Download mode          : 0x%x",
365 		       tlv_patch->download_mode);
366 		BT_DBG("Reserved               : 0x%x",
367 		       tlv_patch->reserved1);
368 		BT_DBG("Product ID             : 0x%04x",
369 		       le16_to_cpu(tlv_patch->product_id));
370 		BT_DBG("Rom Build Version      : 0x%04x",
371 		       le16_to_cpu(tlv_patch->rom_build));
372 		BT_DBG("Patch Version          : 0x%04x",
373 		       le16_to_cpu(tlv_patch->patch_version));
374 		BT_DBG("Reserved               : 0x%x",
375 		       le16_to_cpu(tlv_patch->reserved2));
376 		BT_DBG("Patch Entry Address    : 0x%x",
377 		       le32_to_cpu(tlv_patch->entry));
378 		break;
379 
380 	case TLV_TYPE_NVM:
381 		if (fw_size < sizeof(struct tlv_type_hdr))
382 			return -EINVAL;
383 
384 		tlv = (struct tlv_type_hdr *)fw_data;
385 
386 		type_len = le32_to_cpu(tlv->type_len);
387 		length = type_len >> 8;
388 		type = type_len & 0xff;
389 
390 		/* Some NVM files have more than one set of tags, only parse
391 		 * the first set when it has type 2 for now. When there is
392 		 * more than one set there is an enclosing header of type 4.
393 		 */
394 		if (type == 4) {
395 			if (fw_size < 2 * sizeof(struct tlv_type_hdr))
396 				return -EINVAL;
397 
398 			tlv++;
399 
400 			type_len = le32_to_cpu(tlv->type_len);
401 			length = type_len >> 8;
402 			type = type_len & 0xff;
403 		}
404 
405 		BT_DBG("TLV Type\t\t : 0x%x", type);
406 		BT_DBG("Length\t\t : %d bytes", length);
407 
408 		if (type != 2)
409 			break;
410 
411 		if (fw_size < length + (tlv->data - fw_data))
412 			return -EINVAL;
413 
414 		idx = 0;
415 		data = tlv->data;
416 		while (idx < length - sizeof(struct tlv_type_nvm)) {
417 			tlv_nvm = (struct tlv_type_nvm *)(data + idx);
418 
419 			tag_id = le16_to_cpu(tlv_nvm->tag_id);
420 			tag_len = le16_to_cpu(tlv_nvm->tag_len);
421 
422 			if (length < idx + sizeof(struct tlv_type_nvm) + tag_len)
423 				return -EINVAL;
424 
425 			/* Update NVM tags as needed */
426 			switch (tag_id) {
427 			case EDL_TAG_ID_BD_ADDR:
428 				if (tag_len != sizeof(bdaddr_t))
429 					return -EINVAL;
430 
431 				memcpy(&config->bdaddr, tlv_nvm->data, sizeof(bdaddr_t));
432 
433 				break;
434 
435 			case EDL_TAG_ID_HCI:
436 				if (tag_len < 3)
437 					return -EINVAL;
438 
439 				/* HCI transport layer parameters
440 				 * enabling software inband sleep
441 				 * onto controller side.
442 				 */
443 				tlv_nvm->data[0] |= 0x80;
444 
445 				/* UART Baud Rate */
446 				if (soc_type >= QCA_WCN3991)
447 					tlv_nvm->data[1] = nvm_baud_rate;
448 				else
449 					tlv_nvm->data[2] = nvm_baud_rate;
450 
451 				break;
452 
453 			case EDL_TAG_ID_DEEP_SLEEP:
454 				if (tag_len < 1)
455 					return -EINVAL;
456 
457 				/* Sleep enable mask
458 				 * enabling deep sleep feature on controller.
459 				 */
460 				tlv_nvm->data[0] |= 0x01;
461 
462 				break;
463 			}
464 
465 			idx += sizeof(struct tlv_type_nvm) + tag_len;
466 		}
467 		break;
468 
469 	default:
470 		BT_ERR("Unknown TLV type %d", config->type);
471 		return -EINVAL;
472 	}
473 
474 	return 0;
475 }
476 
477 static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
478 				const u8 *data, enum qca_tlv_dnld_mode mode,
479 				enum qca_btsoc_type soc_type)
480 {
481 	struct sk_buff *skb;
482 	struct edl_event_hdr *edl;
483 	struct tlv_seg_resp *tlv_resp;
484 	u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
485 	int err = 0;
486 	u8 event_type = HCI_EV_VENDOR;
487 	u8 rlen = (sizeof(*edl) + sizeof(*tlv_resp));
488 	u8 rtype = EDL_TVL_DNLD_RES_EVT;
489 
490 	cmd[0] = EDL_PATCH_TLV_REQ_CMD;
491 	cmd[1] = seg_size;
492 	memcpy(cmd + 2, data, seg_size);
493 
494 	if (mode == QCA_SKIP_EVT_VSE_CC || mode == QCA_SKIP_EVT_VSE)
495 		return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
496 				      cmd);
497 
498 	/* Unlike other SoC's sending version command response as payload to
499 	 * VSE event. WCN3991 sends version command response as a payload to
500 	 * command complete event.
501 	 */
502 	if (soc_type >= QCA_WCN3991) {
503 		event_type = 0;
504 		rlen = sizeof(*edl);
505 		rtype = EDL_PATCH_TLV_REQ_CMD;
506 	}
507 
508 	skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
509 				event_type, HCI_INIT_TIMEOUT);
510 	if (IS_ERR(skb)) {
511 		err = PTR_ERR(skb);
512 		bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
513 		return err;
514 	}
515 
516 	if (skb->len != rlen) {
517 		bt_dev_err(hdev, "QCA TLV response size mismatch");
518 		err = -EILSEQ;
519 		goto out;
520 	}
521 
522 	edl = (struct edl_event_hdr *)(skb->data);
523 
524 	if (edl->cresp != EDL_CMD_REQ_RES_EVT || edl->rtype != rtype) {
525 		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x",
526 			   edl->cresp, edl->rtype);
527 		err = -EIO;
528 	}
529 
530 	if (soc_type >= QCA_WCN3991)
531 		goto out;
532 
533 	tlv_resp = (struct tlv_seg_resp *)(edl->data);
534 	if (tlv_resp->result) {
535 		bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
536 			   edl->cresp, edl->rtype, tlv_resp->result);
537 	}
538 
539 out:
540 	kfree_skb(skb);
541 
542 	return err;
543 }
544 
545 static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
546 {
547 	struct hci_event_hdr *hdr;
548 	struct hci_ev_cmd_complete *evt;
549 	struct sk_buff *skb;
550 
551 	skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
552 	if (!skb)
553 		return -ENOMEM;
554 
555 	hdr = skb_put(skb, sizeof(*hdr));
556 	hdr->evt = HCI_EV_CMD_COMPLETE;
557 	hdr->plen = sizeof(*evt) + 1;
558 
559 	evt = skb_put(skb, sizeof(*evt));
560 	evt->ncmd = 1;
561 	evt->opcode = cpu_to_le16(QCA_HCI_CC_OPCODE);
562 
563 	skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
564 
565 	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
566 
567 	return hci_recv_frame(hdev, skb);
568 }
569 
570 static int qca_download_firmware(struct hci_dev *hdev,
571 				 struct qca_fw_config *config,
572 				 enum qca_btsoc_type soc_type,
573 				 u8 rom_ver)
574 {
575 	const struct firmware *fw;
576 	u8 *data;
577 	const u8 *segment;
578 	int ret, size, remain, i = 0;
579 
580 	bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
581 
582 	ret = request_firmware(&fw, config->fwname, &hdev->dev);
583 	if (ret) {
584 		/* For WCN6750, if mbn file is not present then check for
585 		 * tlv file.
586 		 */
587 		if (soc_type == QCA_WCN6750 && config->type == ELF_TYPE_PATCH) {
588 			bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
589 				   config->fwname, ret);
590 			config->type = TLV_TYPE_PATCH;
591 			snprintf(config->fwname, sizeof(config->fwname),
592 				 "qca/msbtfw%02x.tlv", rom_ver);
593 			bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
594 			ret = request_firmware(&fw, config->fwname, &hdev->dev);
595 			if (ret) {
596 				bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
597 					   config->fwname, ret);
598 				return ret;
599 			}
600 		}
601 		/* If the board-specific file is missing, try loading the default
602 		 * one, unless that was attempted already.
603 		 */
604 		else if (config->type == TLV_TYPE_NVM &&
605 			 qca_get_alt_nvm_file(config->fwname, sizeof(config->fwname))) {
606 			bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
607 			ret = request_firmware(&fw, config->fwname, &hdev->dev);
608 			if (ret) {
609 				bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
610 					   config->fwname, ret);
611 				return ret;
612 			}
613 		} else {
614 			bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
615 				   config->fwname, ret);
616 			return ret;
617 		}
618 	}
619 
620 	size = fw->size;
621 	data = vmalloc(fw->size);
622 	if (!data) {
623 		bt_dev_err(hdev, "QCA Failed to allocate memory for file: %s",
624 			   config->fwname);
625 		release_firmware(fw);
626 		return -ENOMEM;
627 	}
628 
629 	memcpy(data, fw->data, size);
630 	release_firmware(fw);
631 
632 	ret = qca_tlv_check_data(hdev, config, data, size, soc_type);
633 	if (ret)
634 		goto out;
635 
636 	segment = data;
637 	remain = size;
638 	while (remain > 0) {
639 		int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
640 
641 		bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
642 
643 		remain -= segsize;
644 		/* The last segment is always acked regardless download mode */
645 		if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
646 			config->dnld_mode = QCA_SKIP_EVT_NONE;
647 
648 		ret = qca_tlv_send_segment(hdev, segsize, segment,
649 					   config->dnld_mode, soc_type);
650 		if (ret)
651 			goto out;
652 
653 		segment += segsize;
654 	}
655 
656 	/* Latest qualcomm chipsets are not sending a command complete event
657 	 * for every fw packet sent. They only respond with a vendor specific
658 	 * event for the last packet. This optimization in the chip will
659 	 * decrease the BT in initialization time. Here we will inject a command
660 	 * complete event to avoid a command timeout error message.
661 	 */
662 	if (config->dnld_type == QCA_SKIP_EVT_VSE_CC ||
663 	    config->dnld_type == QCA_SKIP_EVT_VSE)
664 		ret = qca_inject_cmd_complete_event(hdev);
665 
666 out:
667 	vfree(data);
668 
669 	return ret;
670 }
671 
672 static int qca_disable_soc_logging(struct hci_dev *hdev)
673 {
674 	struct sk_buff *skb;
675 	u8 cmd[2];
676 	int err;
677 
678 	cmd[0] = QCA_DISABLE_LOGGING_SUB_OP;
679 	cmd[1] = 0x00;
680 	skb = __hci_cmd_sync_ev(hdev, QCA_DISABLE_LOGGING, sizeof(cmd), cmd,
681 				HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
682 	if (IS_ERR(skb)) {
683 		err = PTR_ERR(skb);
684 		bt_dev_err(hdev, "QCA Failed to disable soc logging(%d)", err);
685 		return err;
686 	}
687 
688 	kfree_skb(skb);
689 
690 	return 0;
691 }
692 
693 int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
694 {
695 	struct sk_buff *skb;
696 	u8 cmd[9];
697 	int err;
698 
699 	cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
700 	cmd[1] = 0x02; 			/* TAG ID */
701 	cmd[2] = sizeof(bdaddr_t);	/* size */
702 	memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
703 	skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
704 				HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
705 	if (IS_ERR(skb)) {
706 		err = PTR_ERR(skb);
707 		bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
708 		return err;
709 	}
710 
711 	kfree_skb(skb);
712 
713 	return 0;
714 }
715 EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
716 
717 static int qca_check_bdaddr(struct hci_dev *hdev, const struct qca_fw_config *config)
718 {
719 	struct hci_rp_read_bd_addr *bda;
720 	struct sk_buff *skb;
721 	int err;
722 
723 	if (bacmp(&hdev->public_addr, BDADDR_ANY))
724 		return 0;
725 
726 	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
727 			     HCI_INIT_TIMEOUT);
728 	if (IS_ERR(skb)) {
729 		err = PTR_ERR(skb);
730 		bt_dev_err(hdev, "Failed to read device address (%d)", err);
731 		return err;
732 	}
733 
734 	if (skb->len != sizeof(*bda)) {
735 		bt_dev_err(hdev, "Device address length mismatch");
736 		kfree_skb(skb);
737 		return -EIO;
738 	}
739 
740 	bda = (struct hci_rp_read_bd_addr *)skb->data;
741 	if (!bacmp(&bda->bdaddr, &config->bdaddr))
742 		set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks);
743 
744 	kfree_skb(skb);
745 
746 	return 0;
747 }
748 
749 static void qca_get_nvm_name_by_board(char *fwname, size_t max_size,
750 		const char *stem, enum qca_btsoc_type soc_type,
751 		struct qca_btsoc_version ver, u8 rom_ver, u16 bid)
752 {
753 	const char *variant;
754 	const char *prefix;
755 
756 	/* Set the default value to variant and prefix */
757 	variant = "";
758 	prefix = "b";
759 
760 	if (soc_type == QCA_QCA2066)
761 		prefix = "";
762 
763 	if (soc_type == QCA_WCN6855 || soc_type == QCA_QCA2066) {
764 		/* If the chip is manufactured by GlobalFoundries */
765 		if ((le32_to_cpu(ver.soc_id) & QCA_HSP_GF_SOC_MASK) == QCA_HSP_GF_SOC_ID)
766 			variant = "g";
767 	}
768 
769 	if (rom_ver != 0) {
770 		if (bid == 0x0 || bid == 0xffff)
771 			snprintf(fwname, max_size, "qca/%s%02x%s.bin", stem, rom_ver, variant);
772 		else
773 			snprintf(fwname, max_size, "qca/%s%02x%s.%s%02x", stem, rom_ver,
774 						variant, prefix, bid);
775 	} else {
776 		if (bid == 0x0 || bid == 0xffff)
777 			snprintf(fwname, max_size, "qca/%s%s.bin", stem, variant);
778 		else
779 			snprintf(fwname, max_size, "qca/%s%s.%s%02x", stem, variant, prefix, bid);
780 	}
781 }
782 
783 int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
784 		   enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
785 		   const char *firmware_name, const char *rampatch_name)
786 {
787 	struct qca_fw_config config = {};
788 	int err;
789 	u8 rom_ver = 0;
790 	u32 soc_ver;
791 	u16 boardid = 0;
792 
793 	bt_dev_dbg(hdev, "QCA setup on UART");
794 
795 	soc_ver = get_soc_ver(ver.soc_id, ver.rom_ver);
796 
797 	bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);
798 
799 	config.user_baud_rate = baudrate;
800 
801 	/* Firmware files to download are based on ROM version.
802 	 * ROM version is derived from last two bytes of soc_ver.
803 	 */
804 	if (soc_type == QCA_WCN3988)
805 		rom_ver = ((soc_ver & 0x00000f00) >> 0x05) | (soc_ver & 0x0000000f);
806 	else
807 		rom_ver = ((soc_ver & 0x00000f00) >> 0x04) | (soc_ver & 0x0000000f);
808 
809 	if (soc_type == QCA_WCN6750)
810 		qca_send_patch_config_cmd(hdev);
811 
812 	/* Download rampatch file */
813 	config.type = TLV_TYPE_PATCH;
814 	if (rampatch_name) {
815 		snprintf(config.fwname, sizeof(config.fwname), "qca/%s", rampatch_name);
816 	} else {
817 		switch (soc_type) {
818 		case QCA_WCN3990:
819 		case QCA_WCN3991:
820 		case QCA_WCN3998:
821 			snprintf(config.fwname, sizeof(config.fwname),
822 				 "qca/crbtfw%02x.tlv", rom_ver);
823 			break;
824 		case QCA_WCN3988:
825 			snprintf(config.fwname, sizeof(config.fwname),
826 				 "qca/apbtfw%02x.tlv", rom_ver);
827 			break;
828 		case QCA_QCA2066:
829 			snprintf(config.fwname, sizeof(config.fwname),
830 				 "qca/hpbtfw%02x.tlv", rom_ver);
831 			break;
832 		case QCA_QCA6390:
833 			snprintf(config.fwname, sizeof(config.fwname),
834 				 "qca/htbtfw%02x.tlv", rom_ver);
835 			break;
836 		case QCA_WCN6750:
837 			/* Choose mbn file by default.If mbn file is not found
838 			 * then choose tlv file
839 			 */
840 			config.type = ELF_TYPE_PATCH;
841 			snprintf(config.fwname, sizeof(config.fwname),
842 				 "qca/msbtfw%02x.mbn", rom_ver);
843 			break;
844 		case QCA_WCN6855:
845 			snprintf(config.fwname, sizeof(config.fwname),
846 				 "qca/hpbtfw%02x.tlv", rom_ver);
847 			break;
848 		case QCA_WCN7850:
849 			snprintf(config.fwname, sizeof(config.fwname),
850 				 "qca/hmtbtfw%02x.tlv", rom_ver);
851 			break;
852 		default:
853 			snprintf(config.fwname, sizeof(config.fwname),
854 				 "qca/rampatch_%08x.bin", soc_ver);
855 		}
856 	}
857 
858 	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
859 	if (err < 0) {
860 		bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
861 		return err;
862 	}
863 
864 	/* Give the controller some time to get ready to receive the NVM */
865 	msleep(10);
866 
867 	if (soc_type == QCA_QCA2066 || soc_type == QCA_WCN7850)
868 		qca_read_fw_board_id(hdev, &boardid);
869 
870 	/* Download NVM configuration */
871 	config.type = TLV_TYPE_NVM;
872 	if (firmware_name) {
873 		/* The firmware name has an extension, use it directly */
874 		if (qca_filename_has_extension(firmware_name)) {
875 			snprintf(config.fwname, sizeof(config.fwname), "qca/%s", firmware_name);
876 		} else {
877 			qca_read_fw_board_id(hdev, &boardid);
878 			qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
879 				 firmware_name, soc_type, ver, 0, boardid);
880 		}
881 	} else {
882 		switch (soc_type) {
883 		case QCA_WCN3990:
884 		case QCA_WCN3991:
885 		case QCA_WCN3998:
886 			if (le32_to_cpu(ver.soc_id) == QCA_WCN3991_SOC_ID) {
887 				snprintf(config.fwname, sizeof(config.fwname),
888 					 "qca/crnv%02xu.bin", rom_ver);
889 			} else {
890 				snprintf(config.fwname, sizeof(config.fwname),
891 					 "qca/crnv%02x.bin", rom_ver);
892 			}
893 			break;
894 		case QCA_WCN3988:
895 			snprintf(config.fwname, sizeof(config.fwname),
896 				 "qca/apnv%02x.bin", rom_ver);
897 			break;
898 		case QCA_QCA2066:
899 			qca_get_nvm_name_by_board(config.fwname,
900 				sizeof(config.fwname), "hpnv", soc_type, ver,
901 				rom_ver, boardid);
902 			break;
903 		case QCA_QCA6390:
904 			snprintf(config.fwname, sizeof(config.fwname),
905 				 "qca/htnv%02x.bin", rom_ver);
906 			break;
907 		case QCA_WCN6750:
908 			snprintf(config.fwname, sizeof(config.fwname),
909 				 "qca/msnv%02x.bin", rom_ver);
910 			break;
911 		case QCA_WCN6855:
912 			qca_read_fw_board_id(hdev, &boardid);
913 			qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
914 						  "hpnv", soc_type, ver, rom_ver, boardid);
915 			break;
916 		case QCA_WCN7850:
917 			qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
918 				 "hmtnv", soc_type, ver, rom_ver, boardid);
919 			break;
920 		default:
921 			snprintf(config.fwname, sizeof(config.fwname),
922 				 "qca/nvm_%08x.bin", soc_ver);
923 		}
924 	}
925 
926 	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
927 	if (err < 0) {
928 		bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
929 		return err;
930 	}
931 
932 	switch (soc_type) {
933 	case QCA_WCN3991:
934 	case QCA_QCA2066:
935 	case QCA_QCA6390:
936 	case QCA_WCN6750:
937 	case QCA_WCN6855:
938 	case QCA_WCN7850:
939 		err = qca_disable_soc_logging(hdev);
940 		if (err < 0)
941 			return err;
942 		break;
943 	default:
944 		break;
945 	}
946 
947 	/* WCN399x and WCN6750 supports the Microsoft vendor extension with 0xFD70 as the
948 	 * VsMsftOpCode.
949 	 */
950 	switch (soc_type) {
951 	case QCA_WCN3988:
952 	case QCA_WCN3990:
953 	case QCA_WCN3991:
954 	case QCA_WCN3998:
955 	case QCA_WCN6750:
956 		hci_set_msft_opcode(hdev, 0xFD70);
957 		break;
958 	default:
959 		break;
960 	}
961 
962 	/* Perform HCI reset */
963 	err = qca_send_reset(hdev);
964 	if (err < 0) {
965 		bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
966 		return err;
967 	}
968 
969 	switch (soc_type) {
970 	case QCA_WCN3991:
971 	case QCA_WCN6750:
972 	case QCA_WCN6855:
973 	case QCA_WCN7850:
974 		/* get fw build info */
975 		err = qca_read_fw_build_info(hdev);
976 		if (err < 0)
977 			return err;
978 		break;
979 	default:
980 		break;
981 	}
982 
983 	err = qca_check_bdaddr(hdev, &config);
984 	if (err)
985 		return err;
986 
987 	bt_dev_info(hdev, "QCA setup on UART is completed");
988 
989 	return 0;
990 }
991 EXPORT_SYMBOL_GPL(qca_uart_setup);
992 
993 int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
994 {
995 	bdaddr_t bdaddr_swapped;
996 	struct sk_buff *skb;
997 	int err;
998 
999 	baswap(&bdaddr_swapped, bdaddr);
1000 
1001 	skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6,
1002 				&bdaddr_swapped, HCI_EV_VENDOR,
1003 				HCI_INIT_TIMEOUT);
1004 	if (IS_ERR(skb)) {
1005 		err = PTR_ERR(skb);
1006 		bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
1007 		return err;
1008 	}
1009 
1010 	kfree_skb(skb);
1011 
1012 	return 0;
1013 }
1014 EXPORT_SYMBOL_GPL(qca_set_bdaddr);
1015 
1016 
1017 MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
1018 MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family");
1019 MODULE_LICENSE("GPL");
1020