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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Bluetooth support for Intel devices
5 *
6 * Copyright (C) 2015 Intel Corporation
7 */
8
9#include <linux/module.h>
10#include <linux/firmware.h>
11#include <linux/regmap.h>
12#include <asm/unaligned.h>
13
14#include <net/bluetooth/bluetooth.h>
15#include <net/bluetooth/hci_core.h>
16
17#include "btintel.h"
18
19#define VERSION "0.1"
20
21#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
22
23int btintel_check_bdaddr(struct hci_dev *hdev)
24{
25 struct hci_rp_read_bd_addr *bda;
26 struct sk_buff *skb;
27
28 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
29 HCI_INIT_TIMEOUT);
30 if (IS_ERR(skb)) {
31 int err = PTR_ERR(skb);
32 bt_dev_err(hdev, "Reading Intel device address failed (%d)",
33 err);
34 return err;
35 }
36
37 if (skb->len != sizeof(*bda)) {
38 bt_dev_err(hdev, "Intel device address length mismatch");
39 kfree_skb(skb);
40 return -EIO;
41 }
42
43 bda = (struct hci_rp_read_bd_addr *)skb->data;
44
45 /* For some Intel based controllers, the default Bluetooth device
46 * address 00:03:19:9E:8B:00 can be found. These controllers are
47 * fully operational, but have the danger of duplicate addresses
48 * and that in turn can cause problems with Bluetooth operation.
49 */
50 if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
51 bt_dev_err(hdev, "Found Intel default device address (%pMR)",
52 &bda->bdaddr);
53 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
54 }
55
56 kfree_skb(skb);
57
58 return 0;
59}
60EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
61
62int btintel_enter_mfg(struct hci_dev *hdev)
63{
64 static const u8 param[] = { 0x01, 0x00 };
65 struct sk_buff *skb;
66
67 skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_CMD_TIMEOUT);
68 if (IS_ERR(skb)) {
69 bt_dev_err(hdev, "Entering manufacturer mode failed (%ld)",
70 PTR_ERR(skb));
71 return PTR_ERR(skb);
72 }
73 kfree_skb(skb);
74
75 return 0;
76}
77EXPORT_SYMBOL_GPL(btintel_enter_mfg);
78
79int btintel_exit_mfg(struct hci_dev *hdev, bool reset, bool patched)
80{
81 u8 param[] = { 0x00, 0x00 };
82 struct sk_buff *skb;
83
84 /* The 2nd command parameter specifies the manufacturing exit method:
85 * 0x00: Just disable the manufacturing mode (0x00).
86 * 0x01: Disable manufacturing mode and reset with patches deactivated.
87 * 0x02: Disable manufacturing mode and reset with patches activated.
88 */
89 if (reset)
90 param[1] |= patched ? 0x02 : 0x01;
91
92 skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_CMD_TIMEOUT);
93 if (IS_ERR(skb)) {
94 bt_dev_err(hdev, "Exiting manufacturer mode failed (%ld)",
95 PTR_ERR(skb));
96 return PTR_ERR(skb);
97 }
98 kfree_skb(skb);
99
100 return 0;
101}
102EXPORT_SYMBOL_GPL(btintel_exit_mfg);
103
104int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
105{
106 struct sk_buff *skb;
107 int err;
108
109 skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
110 if (IS_ERR(skb)) {
111 err = PTR_ERR(skb);
112 bt_dev_err(hdev, "Changing Intel device address failed (%d)",
113 err);
114 return err;
115 }
116 kfree_skb(skb);
117
118 return 0;
119}
120EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
121
122int btintel_set_diag(struct hci_dev *hdev, bool enable)
123{
124 struct sk_buff *skb;
125 u8 param[3];
126 int err;
127
128 if (enable) {
129 param[0] = 0x03;
130 param[1] = 0x03;
131 param[2] = 0x03;
132 } else {
133 param[0] = 0x00;
134 param[1] = 0x00;
135 param[2] = 0x00;
136 }
137
138 skb = __hci_cmd_sync(hdev, 0xfc43, 3, param, HCI_INIT_TIMEOUT);
139 if (IS_ERR(skb)) {
140 err = PTR_ERR(skb);
141 if (err == -ENODATA)
142 goto done;
143 bt_dev_err(hdev, "Changing Intel diagnostic mode failed (%d)",
144 err);
145 return err;
146 }
147 kfree_skb(skb);
148
149done:
150 btintel_set_event_mask(hdev, enable);
151 return 0;
152}
153EXPORT_SYMBOL_GPL(btintel_set_diag);
154
155int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable)
156{
157 int err, ret;
158
159 err = btintel_enter_mfg(hdev);
160 if (err)
161 return err;
162
163 ret = btintel_set_diag(hdev, enable);
164
165 err = btintel_exit_mfg(hdev, false, false);
166 if (err)
167 return err;
168
169 return ret;
170}
171EXPORT_SYMBOL_GPL(btintel_set_diag_mfg);
172
173void btintel_hw_error(struct hci_dev *hdev, u8 code)
174{
175 struct sk_buff *skb;
176 u8 type = 0x00;
177
178 bt_dev_err(hdev, "Hardware error 0x%2.2x", code);
179
180 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
181 if (IS_ERR(skb)) {
182 bt_dev_err(hdev, "Reset after hardware error failed (%ld)",
183 PTR_ERR(skb));
184 return;
185 }
186 kfree_skb(skb);
187
188 skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
189 if (IS_ERR(skb)) {
190 bt_dev_err(hdev, "Retrieving Intel exception info failed (%ld)",
191 PTR_ERR(skb));
192 return;
193 }
194
195 if (skb->len != 13) {
196 bt_dev_err(hdev, "Exception info size mismatch");
197 kfree_skb(skb);
198 return;
199 }
200
201 bt_dev_err(hdev, "Exception info %s", (char *)(skb->data + 1));
202
203 kfree_skb(skb);
204}
205EXPORT_SYMBOL_GPL(btintel_hw_error);
206
207void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver)
208{
209 const char *variant;
210
211 switch (ver->fw_variant) {
212 case 0x06:
213 variant = "Bootloader";
214 break;
215 case 0x23:
216 variant = "Firmware";
217 break;
218 default:
219 return;
220 }
221
222 bt_dev_info(hdev, "%s revision %u.%u build %u week %u %u",
223 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
224 ver->fw_build_num, ver->fw_build_ww,
225 2000 + ver->fw_build_yy);
226}
227EXPORT_SYMBOL_GPL(btintel_version_info);
228
229int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
230 const void *param)
231{
232 while (plen > 0) {
233 struct sk_buff *skb;
234 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
235
236 cmd_param[0] = fragment_type;
237 memcpy(cmd_param + 1, param, fragment_len);
238
239 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
240 cmd_param, HCI_INIT_TIMEOUT);
241 if (IS_ERR(skb))
242 return PTR_ERR(skb);
243
244 kfree_skb(skb);
245
246 plen -= fragment_len;
247 param += fragment_len;
248 }
249
250 return 0;
251}
252EXPORT_SYMBOL_GPL(btintel_secure_send);
253
254int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name)
255{
256 const struct firmware *fw;
257 struct sk_buff *skb;
258 const u8 *fw_ptr;
259 int err;
260
261 err = request_firmware_direct(&fw, ddc_name, &hdev->dev);
262 if (err < 0) {
263 bt_dev_err(hdev, "Failed to load Intel DDC file %s (%d)",
264 ddc_name, err);
265 return err;
266 }
267
268 bt_dev_info(hdev, "Found Intel DDC parameters: %s", ddc_name);
269
270 fw_ptr = fw->data;
271
272 /* DDC file contains one or more DDC structure which has
273 * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
274 */
275 while (fw->size > fw_ptr - fw->data) {
276 u8 cmd_plen = fw_ptr[0] + sizeof(u8);
277
278 skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
279 HCI_INIT_TIMEOUT);
280 if (IS_ERR(skb)) {
281 bt_dev_err(hdev, "Failed to send Intel_Write_DDC (%ld)",
282 PTR_ERR(skb));
283 release_firmware(fw);
284 return PTR_ERR(skb);
285 }
286
287 fw_ptr += cmd_plen;
288 kfree_skb(skb);
289 }
290
291 release_firmware(fw);
292
293 bt_dev_info(hdev, "Applying Intel DDC parameters completed");
294
295 return 0;
296}
297EXPORT_SYMBOL_GPL(btintel_load_ddc_config);
298
299int btintel_set_event_mask(struct hci_dev *hdev, bool debug)
300{
301 u8 mask[8] = { 0x87, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
302 struct sk_buff *skb;
303 int err;
304
305 if (debug)
306 mask[1] |= 0x62;
307
308 skb = __hci_cmd_sync(hdev, 0xfc52, 8, mask, HCI_INIT_TIMEOUT);
309 if (IS_ERR(skb)) {
310 err = PTR_ERR(skb);
311 bt_dev_err(hdev, "Setting Intel event mask failed (%d)", err);
312 return err;
313 }
314 kfree_skb(skb);
315
316 return 0;
317}
318EXPORT_SYMBOL_GPL(btintel_set_event_mask);
319
320int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug)
321{
322 int err, ret;
323
324 err = btintel_enter_mfg(hdev);
325 if (err)
326 return err;
327
328 ret = btintel_set_event_mask(hdev, debug);
329
330 err = btintel_exit_mfg(hdev, false, false);
331 if (err)
332 return err;
333
334 return ret;
335}
336EXPORT_SYMBOL_GPL(btintel_set_event_mask_mfg);
337
338int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver)
339{
340 struct sk_buff *skb;
341
342 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT);
343 if (IS_ERR(skb)) {
344 bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
345 PTR_ERR(skb));
346 return PTR_ERR(skb);
347 }
348
349 if (skb->len != sizeof(*ver)) {
350 bt_dev_err(hdev, "Intel version event size mismatch");
351 kfree_skb(skb);
352 return -EILSEQ;
353 }
354
355 memcpy(ver, skb->data, sizeof(*ver));
356
357 kfree_skb(skb);
358
359 return 0;
360}
361EXPORT_SYMBOL_GPL(btintel_read_version);
362
363/* ------- REGMAP IBT SUPPORT ------- */
364
365#define IBT_REG_MODE_8BIT 0x00
366#define IBT_REG_MODE_16BIT 0x01
367#define IBT_REG_MODE_32BIT 0x02
368
369struct regmap_ibt_context {
370 struct hci_dev *hdev;
371 __u16 op_write;
372 __u16 op_read;
373};
374
375struct ibt_cp_reg_access {
376 __le32 addr;
377 __u8 mode;
378 __u8 len;
379 __u8 data[];
380} __packed;
381
382struct ibt_rp_reg_access {
383 __u8 status;
384 __le32 addr;
385 __u8 data[];
386} __packed;
387
388static int regmap_ibt_read(void *context, const void *addr, size_t reg_size,
389 void *val, size_t val_size)
390{
391 struct regmap_ibt_context *ctx = context;
392 struct ibt_cp_reg_access cp;
393 struct ibt_rp_reg_access *rp;
394 struct sk_buff *skb;
395 int err = 0;
396
397 if (reg_size != sizeof(__le32))
398 return -EINVAL;
399
400 switch (val_size) {
401 case 1:
402 cp.mode = IBT_REG_MODE_8BIT;
403 break;
404 case 2:
405 cp.mode = IBT_REG_MODE_16BIT;
406 break;
407 case 4:
408 cp.mode = IBT_REG_MODE_32BIT;
409 break;
410 default:
411 return -EINVAL;
412 }
413
414 /* regmap provides a little-endian formatted addr */
415 cp.addr = *(__le32 *)addr;
416 cp.len = val_size;
417
418 bt_dev_dbg(ctx->hdev, "Register (0x%x) read", le32_to_cpu(cp.addr));
419
420 skb = hci_cmd_sync(ctx->hdev, ctx->op_read, sizeof(cp), &cp,
421 HCI_CMD_TIMEOUT);
422 if (IS_ERR(skb)) {
423 err = PTR_ERR(skb);
424 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error (%d)",
425 le32_to_cpu(cp.addr), err);
426 return err;
427 }
428
429 if (skb->len != sizeof(*rp) + val_size) {
430 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad len",
431 le32_to_cpu(cp.addr));
432 err = -EINVAL;
433 goto done;
434 }
435
436 rp = (struct ibt_rp_reg_access *)skb->data;
437
438 if (rp->addr != cp.addr) {
439 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad addr",
440 le32_to_cpu(rp->addr));
441 err = -EINVAL;
442 goto done;
443 }
444
445 memcpy(val, rp->data, val_size);
446
447done:
448 kfree_skb(skb);
449 return err;
450}
451
452static int regmap_ibt_gather_write(void *context,
453 const void *addr, size_t reg_size,
454 const void *val, size_t val_size)
455{
456 struct regmap_ibt_context *ctx = context;
457 struct ibt_cp_reg_access *cp;
458 struct sk_buff *skb;
459 int plen = sizeof(*cp) + val_size;
460 u8 mode;
461 int err = 0;
462
463 if (reg_size != sizeof(__le32))
464 return -EINVAL;
465
466 switch (val_size) {
467 case 1:
468 mode = IBT_REG_MODE_8BIT;
469 break;
470 case 2:
471 mode = IBT_REG_MODE_16BIT;
472 break;
473 case 4:
474 mode = IBT_REG_MODE_32BIT;
475 break;
476 default:
477 return -EINVAL;
478 }
479
480 cp = kmalloc(plen, GFP_KERNEL);
481 if (!cp)
482 return -ENOMEM;
483
484 /* regmap provides a little-endian formatted addr/value */
485 cp->addr = *(__le32 *)addr;
486 cp->mode = mode;
487 cp->len = val_size;
488 memcpy(&cp->data, val, val_size);
489
490 bt_dev_dbg(ctx->hdev, "Register (0x%x) write", le32_to_cpu(cp->addr));
491
492 skb = hci_cmd_sync(ctx->hdev, ctx->op_write, plen, cp, HCI_CMD_TIMEOUT);
493 if (IS_ERR(skb)) {
494 err = PTR_ERR(skb);
495 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) write error (%d)",
496 le32_to_cpu(cp->addr), err);
497 goto done;
498 }
499 kfree_skb(skb);
500
501done:
502 kfree(cp);
503 return err;
504}
505
506static int regmap_ibt_write(void *context, const void *data, size_t count)
507{
508 /* data contains register+value, since we only support 32bit addr,
509 * minimum data size is 4 bytes.
510 */
511 if (WARN_ONCE(count < 4, "Invalid register access"))
512 return -EINVAL;
513
514 return regmap_ibt_gather_write(context, data, 4, data + 4, count - 4);
515}
516
517static void regmap_ibt_free_context(void *context)
518{
519 kfree(context);
520}
521
522static struct regmap_bus regmap_ibt = {
523 .read = regmap_ibt_read,
524 .write = regmap_ibt_write,
525 .gather_write = regmap_ibt_gather_write,
526 .free_context = regmap_ibt_free_context,
527 .reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
528 .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
529};
530
531/* Config is the same for all register regions */
532static const struct regmap_config regmap_ibt_cfg = {
533 .name = "btintel_regmap",
534 .reg_bits = 32,
535 .val_bits = 32,
536};
537
538struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
539 u16 opcode_write)
540{
541 struct regmap_ibt_context *ctx;
542
543 bt_dev_info(hdev, "regmap: Init R%x-W%x region", opcode_read,
544 opcode_write);
545
546 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
547 if (!ctx)
548 return ERR_PTR(-ENOMEM);
549
550 ctx->op_read = opcode_read;
551 ctx->op_write = opcode_write;
552 ctx->hdev = hdev;
553
554 return regmap_init(&hdev->dev, ®map_ibt, ctx, ®map_ibt_cfg);
555}
556EXPORT_SYMBOL_GPL(btintel_regmap_init);
557
558int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param)
559{
560 struct intel_reset params = { 0x00, 0x01, 0x00, 0x01, 0x00000000 };
561 struct sk_buff *skb;
562
563 params.boot_param = cpu_to_le32(boot_param);
564
565 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(params), ¶ms,
566 HCI_INIT_TIMEOUT);
567 if (IS_ERR(skb)) {
568 bt_dev_err(hdev, "Failed to send Intel Reset command");
569 return PTR_ERR(skb);
570 }
571
572 kfree_skb(skb);
573
574 return 0;
575}
576EXPORT_SYMBOL_GPL(btintel_send_intel_reset);
577
578int btintel_read_boot_params(struct hci_dev *hdev,
579 struct intel_boot_params *params)
580{
581 struct sk_buff *skb;
582
583 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
584 if (IS_ERR(skb)) {
585 bt_dev_err(hdev, "Reading Intel boot parameters failed (%ld)",
586 PTR_ERR(skb));
587 return PTR_ERR(skb);
588 }
589
590 if (skb->len != sizeof(*params)) {
591 bt_dev_err(hdev, "Intel boot parameters size mismatch");
592 kfree_skb(skb);
593 return -EILSEQ;
594 }
595
596 memcpy(params, skb->data, sizeof(*params));
597
598 kfree_skb(skb);
599
600 if (params->status) {
601 bt_dev_err(hdev, "Intel boot parameters command failed (%02x)",
602 params->status);
603 return -bt_to_errno(params->status);
604 }
605
606 bt_dev_info(hdev, "Device revision is %u",
607 le16_to_cpu(params->dev_revid));
608
609 bt_dev_info(hdev, "Secure boot is %s",
610 params->secure_boot ? "enabled" : "disabled");
611
612 bt_dev_info(hdev, "OTP lock is %s",
613 params->otp_lock ? "enabled" : "disabled");
614
615 bt_dev_info(hdev, "API lock is %s",
616 params->api_lock ? "enabled" : "disabled");
617
618 bt_dev_info(hdev, "Debug lock is %s",
619 params->debug_lock ? "enabled" : "disabled");
620
621 bt_dev_info(hdev, "Minimum firmware build %u week %u %u",
622 params->min_fw_build_nn, params->min_fw_build_cw,
623 2000 + params->min_fw_build_yy);
624
625 return 0;
626}
627EXPORT_SYMBOL_GPL(btintel_read_boot_params);
628
629int btintel_download_firmware(struct hci_dev *hdev, const struct firmware *fw,
630 u32 *boot_param)
631{
632 int err;
633 const u8 *fw_ptr;
634 u32 frag_len;
635
636 /* Start the firmware download transaction with the Init fragment
637 * represented by the 128 bytes of CSS header.
638 */
639 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
640 if (err < 0) {
641 bt_dev_err(hdev, "Failed to send firmware header (%d)", err);
642 goto done;
643 }
644
645 /* Send the 256 bytes of public key information from the firmware
646 * as the PKey fragment.
647 */
648 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
649 if (err < 0) {
650 bt_dev_err(hdev, "Failed to send firmware pkey (%d)", err);
651 goto done;
652 }
653
654 /* Send the 256 bytes of signature information from the firmware
655 * as the Sign fragment.
656 */
657 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
658 if (err < 0) {
659 bt_dev_err(hdev, "Failed to send firmware signature (%d)", err);
660 goto done;
661 }
662
663 fw_ptr = fw->data + 644;
664 frag_len = 0;
665
666 while (fw_ptr - fw->data < fw->size) {
667 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
668
669 /* Each SKU has a different reset parameter to use in the
670 * HCI_Intel_Reset command and it is embedded in the firmware
671 * data. So, instead of using static value per SKU, check
672 * the firmware data and save it for later use.
673 */
674 if (le16_to_cpu(cmd->opcode) == 0xfc0e) {
675 /* The boot parameter is the first 32-bit value
676 * and rest of 3 octets are reserved.
677 */
678 *boot_param = get_unaligned_le32(fw_ptr + sizeof(*cmd));
679
680 bt_dev_dbg(hdev, "boot_param=0x%x", *boot_param);
681 }
682
683 frag_len += sizeof(*cmd) + cmd->plen;
684
685 /* The parameter length of the secure send command requires
686 * a 4 byte alignment. It happens so that the firmware file
687 * contains proper Intel_NOP commands to align the fragments
688 * as needed.
689 *
690 * Send set of commands with 4 byte alignment from the
691 * firmware data buffer as a single Data fragement.
692 */
693 if (!(frag_len % 4)) {
694 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
695 if (err < 0) {
696 bt_dev_err(hdev,
697 "Failed to send firmware data (%d)",
698 err);
699 goto done;
700 }
701
702 fw_ptr += frag_len;
703 frag_len = 0;
704 }
705 }
706
707done:
708 return err;
709}
710EXPORT_SYMBOL_GPL(btintel_download_firmware);
711
712void btintel_reset_to_bootloader(struct hci_dev *hdev)
713{
714 struct intel_reset params;
715 struct sk_buff *skb;
716
717 /* Send Intel Reset command. This will result in
718 * re-enumeration of BT controller.
719 *
720 * Intel Reset parameter description:
721 * reset_type : 0x00 (Soft reset),
722 * 0x01 (Hard reset)
723 * patch_enable : 0x00 (Do not enable),
724 * 0x01 (Enable)
725 * ddc_reload : 0x00 (Do not reload),
726 * 0x01 (Reload)
727 * boot_option: 0x00 (Current image),
728 * 0x01 (Specified boot address)
729 * boot_param: Boot address
730 *
731 */
732 params.reset_type = 0x01;
733 params.patch_enable = 0x01;
734 params.ddc_reload = 0x01;
735 params.boot_option = 0x00;
736 params.boot_param = cpu_to_le32(0x00000000);
737
738 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(params),
739 ¶ms, HCI_INIT_TIMEOUT);
740 if (IS_ERR(skb)) {
741 bt_dev_err(hdev, "FW download error recovery failed (%ld)",
742 PTR_ERR(skb));
743 return;
744 }
745 bt_dev_info(hdev, "Intel reset sent to retry FW download");
746 kfree_skb(skb);
747
748 /* Current Intel BT controllers(ThP/JfP) hold the USB reset
749 * lines for 2ms when it receives Intel Reset in bootloader mode.
750 * Whereas, the upcoming Intel BT controllers will hold USB reset
751 * for 150ms. To keep the delay generic, 150ms is chosen here.
752 */
753 msleep(150);
754}
755EXPORT_SYMBOL_GPL(btintel_reset_to_bootloader);
756
757int btintel_read_debug_features(struct hci_dev *hdev,
758 struct intel_debug_features *features)
759{
760 struct sk_buff *skb;
761 u8 page_no = 1;
762
763 /* Intel controller supports two pages, each page is of 128-bit
764 * feature bit mask. And each bit defines specific feature support
765 */
766 skb = __hci_cmd_sync(hdev, 0xfca6, sizeof(page_no), &page_no,
767 HCI_INIT_TIMEOUT);
768 if (IS_ERR(skb)) {
769 bt_dev_err(hdev, "Reading supported features failed (%ld)",
770 PTR_ERR(skb));
771 return PTR_ERR(skb);
772 }
773
774 if (skb->len != (sizeof(features->page1) + 3)) {
775 bt_dev_err(hdev, "Supported features event size mismatch");
776 kfree_skb(skb);
777 return -EILSEQ;
778 }
779
780 memcpy(features->page1, skb->data + 3, sizeof(features->page1));
781
782 /* Read the supported features page2 if required in future.
783 */
784 kfree_skb(skb);
785 return 0;
786}
787EXPORT_SYMBOL_GPL(btintel_read_debug_features);
788
789int btintel_set_debug_features(struct hci_dev *hdev,
790 const struct intel_debug_features *features)
791{
792 u8 mask[11] = { 0x0a, 0x92, 0x02, 0x07, 0x00, 0x00, 0x00, 0x00,
793 0x00, 0x00, 0x00 };
794 struct sk_buff *skb;
795
796 if (!features)
797 return -EINVAL;
798
799 if (!(features->page1[0] & 0x3f)) {
800 bt_dev_info(hdev, "Telemetry exception format not supported");
801 return 0;
802 }
803
804 skb = __hci_cmd_sync(hdev, 0xfc8b, 11, mask, HCI_INIT_TIMEOUT);
805 if (IS_ERR(skb)) {
806 bt_dev_err(hdev, "Setting Intel telemetry ddc write event mask failed (%ld)",
807 PTR_ERR(skb));
808 return PTR_ERR(skb);
809 }
810
811 kfree_skb(skb);
812 return 0;
813}
814EXPORT_SYMBOL_GPL(btintel_set_debug_features);
815
816MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
817MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
818MODULE_VERSION(VERSION);
819MODULE_LICENSE("GPL");
820MODULE_FIRMWARE("intel/ibt-11-5.sfi");
821MODULE_FIRMWARE("intel/ibt-11-5.ddc");
822MODULE_FIRMWARE("intel/ibt-12-16.sfi");
823MODULE_FIRMWARE("intel/ibt-12-16.ddc");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Bluetooth support for Intel devices
5 *
6 * Copyright (C) 2015 Intel Corporation
7 */
8
9#include <linux/module.h>
10#include <linux/firmware.h>
11#include <linux/regmap.h>
12#include <asm/unaligned.h>
13
14#include <net/bluetooth/bluetooth.h>
15#include <net/bluetooth/hci_core.h>
16
17#include "btintel.h"
18
19#define VERSION "0.1"
20
21#define BDADDR_INTEL (&(bdaddr_t){{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
22#define RSA_HEADER_LEN 644
23#define CSS_HEADER_OFFSET 8
24#define ECDSA_OFFSET 644
25#define ECDSA_HEADER_LEN 320
26
27#define CMD_WRITE_BOOT_PARAMS 0xfc0e
28struct cmd_write_boot_params {
29 __le32 boot_addr;
30 u8 fw_build_num;
31 u8 fw_build_ww;
32 u8 fw_build_yy;
33} __packed;
34
35int btintel_check_bdaddr(struct hci_dev *hdev)
36{
37 struct hci_rp_read_bd_addr *bda;
38 struct sk_buff *skb;
39
40 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
41 HCI_INIT_TIMEOUT);
42 if (IS_ERR(skb)) {
43 int err = PTR_ERR(skb);
44 bt_dev_err(hdev, "Reading Intel device address failed (%d)",
45 err);
46 return err;
47 }
48
49 if (skb->len != sizeof(*bda)) {
50 bt_dev_err(hdev, "Intel device address length mismatch");
51 kfree_skb(skb);
52 return -EIO;
53 }
54
55 bda = (struct hci_rp_read_bd_addr *)skb->data;
56
57 /* For some Intel based controllers, the default Bluetooth device
58 * address 00:03:19:9E:8B:00 can be found. These controllers are
59 * fully operational, but have the danger of duplicate addresses
60 * and that in turn can cause problems with Bluetooth operation.
61 */
62 if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
63 bt_dev_err(hdev, "Found Intel default device address (%pMR)",
64 &bda->bdaddr);
65 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
66 }
67
68 kfree_skb(skb);
69
70 return 0;
71}
72EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
73
74int btintel_enter_mfg(struct hci_dev *hdev)
75{
76 static const u8 param[] = { 0x01, 0x00 };
77 struct sk_buff *skb;
78
79 skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_CMD_TIMEOUT);
80 if (IS_ERR(skb)) {
81 bt_dev_err(hdev, "Entering manufacturer mode failed (%ld)",
82 PTR_ERR(skb));
83 return PTR_ERR(skb);
84 }
85 kfree_skb(skb);
86
87 return 0;
88}
89EXPORT_SYMBOL_GPL(btintel_enter_mfg);
90
91int btintel_exit_mfg(struct hci_dev *hdev, bool reset, bool patched)
92{
93 u8 param[] = { 0x00, 0x00 };
94 struct sk_buff *skb;
95
96 /* The 2nd command parameter specifies the manufacturing exit method:
97 * 0x00: Just disable the manufacturing mode (0x00).
98 * 0x01: Disable manufacturing mode and reset with patches deactivated.
99 * 0x02: Disable manufacturing mode and reset with patches activated.
100 */
101 if (reset)
102 param[1] |= patched ? 0x02 : 0x01;
103
104 skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_CMD_TIMEOUT);
105 if (IS_ERR(skb)) {
106 bt_dev_err(hdev, "Exiting manufacturer mode failed (%ld)",
107 PTR_ERR(skb));
108 return PTR_ERR(skb);
109 }
110 kfree_skb(skb);
111
112 return 0;
113}
114EXPORT_SYMBOL_GPL(btintel_exit_mfg);
115
116int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
117{
118 struct sk_buff *skb;
119 int err;
120
121 skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
122 if (IS_ERR(skb)) {
123 err = PTR_ERR(skb);
124 bt_dev_err(hdev, "Changing Intel device address failed (%d)",
125 err);
126 return err;
127 }
128 kfree_skb(skb);
129
130 return 0;
131}
132EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
133
134static int btintel_set_event_mask(struct hci_dev *hdev, bool debug)
135{
136 u8 mask[8] = { 0x87, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
137 struct sk_buff *skb;
138 int err;
139
140 if (debug)
141 mask[1] |= 0x62;
142
143 skb = __hci_cmd_sync(hdev, 0xfc52, 8, mask, HCI_INIT_TIMEOUT);
144 if (IS_ERR(skb)) {
145 err = PTR_ERR(skb);
146 bt_dev_err(hdev, "Setting Intel event mask failed (%d)", err);
147 return err;
148 }
149 kfree_skb(skb);
150
151 return 0;
152}
153
154int btintel_set_diag(struct hci_dev *hdev, bool enable)
155{
156 struct sk_buff *skb;
157 u8 param[3];
158 int err;
159
160 if (enable) {
161 param[0] = 0x03;
162 param[1] = 0x03;
163 param[2] = 0x03;
164 } else {
165 param[0] = 0x00;
166 param[1] = 0x00;
167 param[2] = 0x00;
168 }
169
170 skb = __hci_cmd_sync(hdev, 0xfc43, 3, param, HCI_INIT_TIMEOUT);
171 if (IS_ERR(skb)) {
172 err = PTR_ERR(skb);
173 if (err == -ENODATA)
174 goto done;
175 bt_dev_err(hdev, "Changing Intel diagnostic mode failed (%d)",
176 err);
177 return err;
178 }
179 kfree_skb(skb);
180
181done:
182 btintel_set_event_mask(hdev, enable);
183 return 0;
184}
185EXPORT_SYMBOL_GPL(btintel_set_diag);
186
187static int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable)
188{
189 int err, ret;
190
191 err = btintel_enter_mfg(hdev);
192 if (err)
193 return err;
194
195 ret = btintel_set_diag(hdev, enable);
196
197 err = btintel_exit_mfg(hdev, false, false);
198 if (err)
199 return err;
200
201 return ret;
202}
203
204static int btintel_set_diag_combined(struct hci_dev *hdev, bool enable)
205{
206 int ret;
207
208 /* Legacy ROM device needs to be in the manufacturer mode to apply
209 * diagnostic setting
210 *
211 * This flag is set after reading the Intel version.
212 */
213 if (btintel_test_flag(hdev, INTEL_ROM_LEGACY))
214 ret = btintel_set_diag_mfg(hdev, enable);
215 else
216 ret = btintel_set_diag(hdev, enable);
217
218 return ret;
219}
220
221static void btintel_hw_error(struct hci_dev *hdev, u8 code)
222{
223 struct sk_buff *skb;
224 u8 type = 0x00;
225
226 bt_dev_err(hdev, "Hardware error 0x%2.2x", code);
227
228 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
229 if (IS_ERR(skb)) {
230 bt_dev_err(hdev, "Reset after hardware error failed (%ld)",
231 PTR_ERR(skb));
232 return;
233 }
234 kfree_skb(skb);
235
236 skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
237 if (IS_ERR(skb)) {
238 bt_dev_err(hdev, "Retrieving Intel exception info failed (%ld)",
239 PTR_ERR(skb));
240 return;
241 }
242
243 if (skb->len != 13) {
244 bt_dev_err(hdev, "Exception info size mismatch");
245 kfree_skb(skb);
246 return;
247 }
248
249 bt_dev_err(hdev, "Exception info %s", (char *)(skb->data + 1));
250
251 kfree_skb(skb);
252}
253
254int btintel_version_info(struct hci_dev *hdev, struct intel_version *ver)
255{
256 const char *variant;
257
258 /* The hardware platform number has a fixed value of 0x37 and
259 * for now only accept this single value.
260 */
261 if (ver->hw_platform != 0x37) {
262 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
263 ver->hw_platform);
264 return -EINVAL;
265 }
266
267 /* Check for supported iBT hardware variants of this firmware
268 * loading method.
269 *
270 * This check has been put in place to ensure correct forward
271 * compatibility options when newer hardware variants come along.
272 */
273 switch (ver->hw_variant) {
274 case 0x07: /* WP - Legacy ROM */
275 case 0x08: /* StP - Legacy ROM */
276 case 0x0b: /* SfP */
277 case 0x0c: /* WsP */
278 case 0x11: /* JfP */
279 case 0x12: /* ThP */
280 case 0x13: /* HrP */
281 case 0x14: /* CcP */
282 break;
283 default:
284 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
285 ver->hw_variant);
286 return -EINVAL;
287 }
288
289 switch (ver->fw_variant) {
290 case 0x01:
291 variant = "Legacy ROM 2.5";
292 break;
293 case 0x06:
294 variant = "Bootloader";
295 break;
296 case 0x22:
297 variant = "Legacy ROM 2.x";
298 break;
299 case 0x23:
300 variant = "Firmware";
301 break;
302 default:
303 bt_dev_err(hdev, "Unsupported firmware variant(%02x)", ver->fw_variant);
304 return -EINVAL;
305 }
306
307 bt_dev_info(hdev, "%s revision %u.%u build %u week %u %u",
308 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
309 ver->fw_build_num, ver->fw_build_ww,
310 2000 + ver->fw_build_yy);
311
312 return 0;
313}
314EXPORT_SYMBOL_GPL(btintel_version_info);
315
316static int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
317 const void *param)
318{
319 while (plen > 0) {
320 struct sk_buff *skb;
321 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
322
323 cmd_param[0] = fragment_type;
324 memcpy(cmd_param + 1, param, fragment_len);
325
326 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
327 cmd_param, HCI_INIT_TIMEOUT);
328 if (IS_ERR(skb))
329 return PTR_ERR(skb);
330
331 kfree_skb(skb);
332
333 plen -= fragment_len;
334 param += fragment_len;
335 }
336
337 return 0;
338}
339
340int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name)
341{
342 const struct firmware *fw;
343 struct sk_buff *skb;
344 const u8 *fw_ptr;
345 int err;
346
347 err = request_firmware_direct(&fw, ddc_name, &hdev->dev);
348 if (err < 0) {
349 bt_dev_err(hdev, "Failed to load Intel DDC file %s (%d)",
350 ddc_name, err);
351 return err;
352 }
353
354 bt_dev_info(hdev, "Found Intel DDC parameters: %s", ddc_name);
355
356 fw_ptr = fw->data;
357
358 /* DDC file contains one or more DDC structure which has
359 * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
360 */
361 while (fw->size > fw_ptr - fw->data) {
362 u8 cmd_plen = fw_ptr[0] + sizeof(u8);
363
364 skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
365 HCI_INIT_TIMEOUT);
366 if (IS_ERR(skb)) {
367 bt_dev_err(hdev, "Failed to send Intel_Write_DDC (%ld)",
368 PTR_ERR(skb));
369 release_firmware(fw);
370 return PTR_ERR(skb);
371 }
372
373 fw_ptr += cmd_plen;
374 kfree_skb(skb);
375 }
376
377 release_firmware(fw);
378
379 bt_dev_info(hdev, "Applying Intel DDC parameters completed");
380
381 return 0;
382}
383EXPORT_SYMBOL_GPL(btintel_load_ddc_config);
384
385int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug)
386{
387 int err, ret;
388
389 err = btintel_enter_mfg(hdev);
390 if (err)
391 return err;
392
393 ret = btintel_set_event_mask(hdev, debug);
394
395 err = btintel_exit_mfg(hdev, false, false);
396 if (err)
397 return err;
398
399 return ret;
400}
401EXPORT_SYMBOL_GPL(btintel_set_event_mask_mfg);
402
403int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver)
404{
405 struct sk_buff *skb;
406
407 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT);
408 if (IS_ERR(skb)) {
409 bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
410 PTR_ERR(skb));
411 return PTR_ERR(skb);
412 }
413
414 if (skb->len != sizeof(*ver)) {
415 bt_dev_err(hdev, "Intel version event size mismatch");
416 kfree_skb(skb);
417 return -EILSEQ;
418 }
419
420 memcpy(ver, skb->data, sizeof(*ver));
421
422 kfree_skb(skb);
423
424 return 0;
425}
426EXPORT_SYMBOL_GPL(btintel_read_version);
427
428static int btintel_version_info_tlv(struct hci_dev *hdev,
429 struct intel_version_tlv *version)
430{
431 const char *variant;
432
433 /* The hardware platform number has a fixed value of 0x37 and
434 * for now only accept this single value.
435 */
436 if (INTEL_HW_PLATFORM(version->cnvi_bt) != 0x37) {
437 bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)",
438 INTEL_HW_PLATFORM(version->cnvi_bt));
439 return -EINVAL;
440 }
441
442 /* Check for supported iBT hardware variants of this firmware
443 * loading method.
444 *
445 * This check has been put in place to ensure correct forward
446 * compatibility options when newer hardware variants come along.
447 */
448 switch (INTEL_HW_VARIANT(version->cnvi_bt)) {
449 case 0x17: /* TyP */
450 case 0x18: /* Slr */
451 case 0x19: /* Slr-F */
452 case 0x1b: /* Mgr */
453 break;
454 default:
455 bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)",
456 INTEL_HW_VARIANT(version->cnvi_bt));
457 return -EINVAL;
458 }
459
460 switch (version->img_type) {
461 case 0x01:
462 variant = "Bootloader";
463 /* It is required that every single firmware fragment is acknowledged
464 * with a command complete event. If the boot parameters indicate
465 * that this bootloader does not send them, then abort the setup.
466 */
467 if (version->limited_cce != 0x00) {
468 bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)",
469 version->limited_cce);
470 return -EINVAL;
471 }
472
473 /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */
474 if (version->sbe_type > 0x01) {
475 bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)",
476 version->sbe_type);
477 return -EINVAL;
478 }
479
480 bt_dev_info(hdev, "Device revision is %u", version->dev_rev_id);
481 bt_dev_info(hdev, "Secure boot is %s",
482 version->secure_boot ? "enabled" : "disabled");
483 bt_dev_info(hdev, "OTP lock is %s",
484 version->otp_lock ? "enabled" : "disabled");
485 bt_dev_info(hdev, "API lock is %s",
486 version->api_lock ? "enabled" : "disabled");
487 bt_dev_info(hdev, "Debug lock is %s",
488 version->debug_lock ? "enabled" : "disabled");
489 bt_dev_info(hdev, "Minimum firmware build %u week %u %u",
490 version->min_fw_build_nn, version->min_fw_build_cw,
491 2000 + version->min_fw_build_yy);
492 break;
493 case 0x03:
494 variant = "Firmware";
495 break;
496 default:
497 bt_dev_err(hdev, "Unsupported image type(%02x)", version->img_type);
498 return -EINVAL;
499 }
500
501 bt_dev_info(hdev, "%s timestamp %u.%u buildtype %u build %u", variant,
502 2000 + (version->timestamp >> 8), version->timestamp & 0xff,
503 version->build_type, version->build_num);
504
505 return 0;
506}
507
508static int btintel_parse_version_tlv(struct hci_dev *hdev,
509 struct intel_version_tlv *version,
510 struct sk_buff *skb)
511{
512 /* Consume Command Complete Status field */
513 skb_pull(skb, 1);
514
515 /* Event parameters contatin multiple TLVs. Read each of them
516 * and only keep the required data. Also, it use existing legacy
517 * version field like hw_platform, hw_variant, and fw_variant
518 * to keep the existing setup flow
519 */
520 while (skb->len) {
521 struct intel_tlv *tlv;
522
523 /* Make sure skb has a minimum length of the header */
524 if (skb->len < sizeof(*tlv))
525 return -EINVAL;
526
527 tlv = (struct intel_tlv *)skb->data;
528
529 /* Make sure skb has a enough data */
530 if (skb->len < tlv->len + sizeof(*tlv))
531 return -EINVAL;
532
533 switch (tlv->type) {
534 case INTEL_TLV_CNVI_TOP:
535 version->cnvi_top = get_unaligned_le32(tlv->val);
536 break;
537 case INTEL_TLV_CNVR_TOP:
538 version->cnvr_top = get_unaligned_le32(tlv->val);
539 break;
540 case INTEL_TLV_CNVI_BT:
541 version->cnvi_bt = get_unaligned_le32(tlv->val);
542 break;
543 case INTEL_TLV_CNVR_BT:
544 version->cnvr_bt = get_unaligned_le32(tlv->val);
545 break;
546 case INTEL_TLV_DEV_REV_ID:
547 version->dev_rev_id = get_unaligned_le16(tlv->val);
548 break;
549 case INTEL_TLV_IMAGE_TYPE:
550 version->img_type = tlv->val[0];
551 break;
552 case INTEL_TLV_TIME_STAMP:
553 /* If image type is Operational firmware (0x03), then
554 * running FW Calendar Week and Year information can
555 * be extracted from Timestamp information
556 */
557 version->min_fw_build_cw = tlv->val[0];
558 version->min_fw_build_yy = tlv->val[1];
559 version->timestamp = get_unaligned_le16(tlv->val);
560 break;
561 case INTEL_TLV_BUILD_TYPE:
562 version->build_type = tlv->val[0];
563 break;
564 case INTEL_TLV_BUILD_NUM:
565 /* If image type is Operational firmware (0x03), then
566 * running FW build number can be extracted from the
567 * Build information
568 */
569 version->min_fw_build_nn = tlv->val[0];
570 version->build_num = get_unaligned_le32(tlv->val);
571 break;
572 case INTEL_TLV_SECURE_BOOT:
573 version->secure_boot = tlv->val[0];
574 break;
575 case INTEL_TLV_OTP_LOCK:
576 version->otp_lock = tlv->val[0];
577 break;
578 case INTEL_TLV_API_LOCK:
579 version->api_lock = tlv->val[0];
580 break;
581 case INTEL_TLV_DEBUG_LOCK:
582 version->debug_lock = tlv->val[0];
583 break;
584 case INTEL_TLV_MIN_FW:
585 version->min_fw_build_nn = tlv->val[0];
586 version->min_fw_build_cw = tlv->val[1];
587 version->min_fw_build_yy = tlv->val[2];
588 break;
589 case INTEL_TLV_LIMITED_CCE:
590 version->limited_cce = tlv->val[0];
591 break;
592 case INTEL_TLV_SBE_TYPE:
593 version->sbe_type = tlv->val[0];
594 break;
595 case INTEL_TLV_OTP_BDADDR:
596 memcpy(&version->otp_bd_addr, tlv->val,
597 sizeof(bdaddr_t));
598 break;
599 default:
600 /* Ignore rest of information */
601 break;
602 }
603 /* consume the current tlv and move to next*/
604 skb_pull(skb, tlv->len + sizeof(*tlv));
605 }
606
607 return 0;
608}
609
610static int btintel_read_version_tlv(struct hci_dev *hdev,
611 struct intel_version_tlv *version)
612{
613 struct sk_buff *skb;
614 const u8 param[1] = { 0xFF };
615
616 if (!version)
617 return -EINVAL;
618
619 skb = __hci_cmd_sync(hdev, 0xfc05, 1, param, HCI_CMD_TIMEOUT);
620 if (IS_ERR(skb)) {
621 bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
622 PTR_ERR(skb));
623 return PTR_ERR(skb);
624 }
625
626 if (skb->data[0]) {
627 bt_dev_err(hdev, "Intel Read Version command failed (%02x)",
628 skb->data[0]);
629 kfree_skb(skb);
630 return -EIO;
631 }
632
633 btintel_parse_version_tlv(hdev, version, skb);
634
635 kfree_skb(skb);
636 return 0;
637}
638
639/* ------- REGMAP IBT SUPPORT ------- */
640
641#define IBT_REG_MODE_8BIT 0x00
642#define IBT_REG_MODE_16BIT 0x01
643#define IBT_REG_MODE_32BIT 0x02
644
645struct regmap_ibt_context {
646 struct hci_dev *hdev;
647 __u16 op_write;
648 __u16 op_read;
649};
650
651struct ibt_cp_reg_access {
652 __le32 addr;
653 __u8 mode;
654 __u8 len;
655 __u8 data[];
656} __packed;
657
658struct ibt_rp_reg_access {
659 __u8 status;
660 __le32 addr;
661 __u8 data[];
662} __packed;
663
664static int regmap_ibt_read(void *context, const void *addr, size_t reg_size,
665 void *val, size_t val_size)
666{
667 struct regmap_ibt_context *ctx = context;
668 struct ibt_cp_reg_access cp;
669 struct ibt_rp_reg_access *rp;
670 struct sk_buff *skb;
671 int err = 0;
672
673 if (reg_size != sizeof(__le32))
674 return -EINVAL;
675
676 switch (val_size) {
677 case 1:
678 cp.mode = IBT_REG_MODE_8BIT;
679 break;
680 case 2:
681 cp.mode = IBT_REG_MODE_16BIT;
682 break;
683 case 4:
684 cp.mode = IBT_REG_MODE_32BIT;
685 break;
686 default:
687 return -EINVAL;
688 }
689
690 /* regmap provides a little-endian formatted addr */
691 cp.addr = *(__le32 *)addr;
692 cp.len = val_size;
693
694 bt_dev_dbg(ctx->hdev, "Register (0x%x) read", le32_to_cpu(cp.addr));
695
696 skb = hci_cmd_sync(ctx->hdev, ctx->op_read, sizeof(cp), &cp,
697 HCI_CMD_TIMEOUT);
698 if (IS_ERR(skb)) {
699 err = PTR_ERR(skb);
700 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error (%d)",
701 le32_to_cpu(cp.addr), err);
702 return err;
703 }
704
705 if (skb->len != sizeof(*rp) + val_size) {
706 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad len",
707 le32_to_cpu(cp.addr));
708 err = -EINVAL;
709 goto done;
710 }
711
712 rp = (struct ibt_rp_reg_access *)skb->data;
713
714 if (rp->addr != cp.addr) {
715 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad addr",
716 le32_to_cpu(rp->addr));
717 err = -EINVAL;
718 goto done;
719 }
720
721 memcpy(val, rp->data, val_size);
722
723done:
724 kfree_skb(skb);
725 return err;
726}
727
728static int regmap_ibt_gather_write(void *context,
729 const void *addr, size_t reg_size,
730 const void *val, size_t val_size)
731{
732 struct regmap_ibt_context *ctx = context;
733 struct ibt_cp_reg_access *cp;
734 struct sk_buff *skb;
735 int plen = sizeof(*cp) + val_size;
736 u8 mode;
737 int err = 0;
738
739 if (reg_size != sizeof(__le32))
740 return -EINVAL;
741
742 switch (val_size) {
743 case 1:
744 mode = IBT_REG_MODE_8BIT;
745 break;
746 case 2:
747 mode = IBT_REG_MODE_16BIT;
748 break;
749 case 4:
750 mode = IBT_REG_MODE_32BIT;
751 break;
752 default:
753 return -EINVAL;
754 }
755
756 cp = kmalloc(plen, GFP_KERNEL);
757 if (!cp)
758 return -ENOMEM;
759
760 /* regmap provides a little-endian formatted addr/value */
761 cp->addr = *(__le32 *)addr;
762 cp->mode = mode;
763 cp->len = val_size;
764 memcpy(&cp->data, val, val_size);
765
766 bt_dev_dbg(ctx->hdev, "Register (0x%x) write", le32_to_cpu(cp->addr));
767
768 skb = hci_cmd_sync(ctx->hdev, ctx->op_write, plen, cp, HCI_CMD_TIMEOUT);
769 if (IS_ERR(skb)) {
770 err = PTR_ERR(skb);
771 bt_dev_err(ctx->hdev, "regmap: Register (0x%x) write error (%d)",
772 le32_to_cpu(cp->addr), err);
773 goto done;
774 }
775 kfree_skb(skb);
776
777done:
778 kfree(cp);
779 return err;
780}
781
782static int regmap_ibt_write(void *context, const void *data, size_t count)
783{
784 /* data contains register+value, since we only support 32bit addr,
785 * minimum data size is 4 bytes.
786 */
787 if (WARN_ONCE(count < 4, "Invalid register access"))
788 return -EINVAL;
789
790 return regmap_ibt_gather_write(context, data, 4, data + 4, count - 4);
791}
792
793static void regmap_ibt_free_context(void *context)
794{
795 kfree(context);
796}
797
798static const struct regmap_bus regmap_ibt = {
799 .read = regmap_ibt_read,
800 .write = regmap_ibt_write,
801 .gather_write = regmap_ibt_gather_write,
802 .free_context = regmap_ibt_free_context,
803 .reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
804 .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
805};
806
807/* Config is the same for all register regions */
808static const struct regmap_config regmap_ibt_cfg = {
809 .name = "btintel_regmap",
810 .reg_bits = 32,
811 .val_bits = 32,
812};
813
814struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
815 u16 opcode_write)
816{
817 struct regmap_ibt_context *ctx;
818
819 bt_dev_info(hdev, "regmap: Init R%x-W%x region", opcode_read,
820 opcode_write);
821
822 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
823 if (!ctx)
824 return ERR_PTR(-ENOMEM);
825
826 ctx->op_read = opcode_read;
827 ctx->op_write = opcode_write;
828 ctx->hdev = hdev;
829
830 return regmap_init(&hdev->dev, ®map_ibt, ctx, ®map_ibt_cfg);
831}
832EXPORT_SYMBOL_GPL(btintel_regmap_init);
833
834int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param)
835{
836 struct intel_reset params = { 0x00, 0x01, 0x00, 0x01, 0x00000000 };
837 struct sk_buff *skb;
838
839 params.boot_param = cpu_to_le32(boot_param);
840
841 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(params), ¶ms,
842 HCI_INIT_TIMEOUT);
843 if (IS_ERR(skb)) {
844 bt_dev_err(hdev, "Failed to send Intel Reset command");
845 return PTR_ERR(skb);
846 }
847
848 kfree_skb(skb);
849
850 return 0;
851}
852EXPORT_SYMBOL_GPL(btintel_send_intel_reset);
853
854int btintel_read_boot_params(struct hci_dev *hdev,
855 struct intel_boot_params *params)
856{
857 struct sk_buff *skb;
858
859 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
860 if (IS_ERR(skb)) {
861 bt_dev_err(hdev, "Reading Intel boot parameters failed (%ld)",
862 PTR_ERR(skb));
863 return PTR_ERR(skb);
864 }
865
866 if (skb->len != sizeof(*params)) {
867 bt_dev_err(hdev, "Intel boot parameters size mismatch");
868 kfree_skb(skb);
869 return -EILSEQ;
870 }
871
872 memcpy(params, skb->data, sizeof(*params));
873
874 kfree_skb(skb);
875
876 if (params->status) {
877 bt_dev_err(hdev, "Intel boot parameters command failed (%02x)",
878 params->status);
879 return -bt_to_errno(params->status);
880 }
881
882 bt_dev_info(hdev, "Device revision is %u",
883 le16_to_cpu(params->dev_revid));
884
885 bt_dev_info(hdev, "Secure boot is %s",
886 params->secure_boot ? "enabled" : "disabled");
887
888 bt_dev_info(hdev, "OTP lock is %s",
889 params->otp_lock ? "enabled" : "disabled");
890
891 bt_dev_info(hdev, "API lock is %s",
892 params->api_lock ? "enabled" : "disabled");
893
894 bt_dev_info(hdev, "Debug lock is %s",
895 params->debug_lock ? "enabled" : "disabled");
896
897 bt_dev_info(hdev, "Minimum firmware build %u week %u %u",
898 params->min_fw_build_nn, params->min_fw_build_cw,
899 2000 + params->min_fw_build_yy);
900
901 return 0;
902}
903EXPORT_SYMBOL_GPL(btintel_read_boot_params);
904
905static int btintel_sfi_rsa_header_secure_send(struct hci_dev *hdev,
906 const struct firmware *fw)
907{
908 int err;
909
910 /* Start the firmware download transaction with the Init fragment
911 * represented by the 128 bytes of CSS header.
912 */
913 err = btintel_secure_send(hdev, 0x00, 128, fw->data);
914 if (err < 0) {
915 bt_dev_err(hdev, "Failed to send firmware header (%d)", err);
916 goto done;
917 }
918
919 /* Send the 256 bytes of public key information from the firmware
920 * as the PKey fragment.
921 */
922 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
923 if (err < 0) {
924 bt_dev_err(hdev, "Failed to send firmware pkey (%d)", err);
925 goto done;
926 }
927
928 /* Send the 256 bytes of signature information from the firmware
929 * as the Sign fragment.
930 */
931 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
932 if (err < 0) {
933 bt_dev_err(hdev, "Failed to send firmware signature (%d)", err);
934 goto done;
935 }
936
937done:
938 return err;
939}
940
941static int btintel_sfi_ecdsa_header_secure_send(struct hci_dev *hdev,
942 const struct firmware *fw)
943{
944 int err;
945
946 /* Start the firmware download transaction with the Init fragment
947 * represented by the 128 bytes of CSS header.
948 */
949 err = btintel_secure_send(hdev, 0x00, 128, fw->data + 644);
950 if (err < 0) {
951 bt_dev_err(hdev, "Failed to send firmware header (%d)", err);
952 return err;
953 }
954
955 /* Send the 96 bytes of public key information from the firmware
956 * as the PKey fragment.
957 */
958 err = btintel_secure_send(hdev, 0x03, 96, fw->data + 644 + 128);
959 if (err < 0) {
960 bt_dev_err(hdev, "Failed to send firmware pkey (%d)", err);
961 return err;
962 }
963
964 /* Send the 96 bytes of signature information from the firmware
965 * as the Sign fragment
966 */
967 err = btintel_secure_send(hdev, 0x02, 96, fw->data + 644 + 224);
968 if (err < 0) {
969 bt_dev_err(hdev, "Failed to send firmware signature (%d)",
970 err);
971 return err;
972 }
973 return 0;
974}
975
976static int btintel_download_firmware_payload(struct hci_dev *hdev,
977 const struct firmware *fw,
978 size_t offset)
979{
980 int err;
981 const u8 *fw_ptr;
982 u32 frag_len;
983
984 fw_ptr = fw->data + offset;
985 frag_len = 0;
986 err = -EINVAL;
987
988 while (fw_ptr - fw->data < fw->size) {
989 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
990
991 frag_len += sizeof(*cmd) + cmd->plen;
992
993 /* The parameter length of the secure send command requires
994 * a 4 byte alignment. It happens so that the firmware file
995 * contains proper Intel_NOP commands to align the fragments
996 * as needed.
997 *
998 * Send set of commands with 4 byte alignment from the
999 * firmware data buffer as a single Data fragement.
1000 */
1001 if (!(frag_len % 4)) {
1002 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
1003 if (err < 0) {
1004 bt_dev_err(hdev,
1005 "Failed to send firmware data (%d)",
1006 err);
1007 goto done;
1008 }
1009
1010 fw_ptr += frag_len;
1011 frag_len = 0;
1012 }
1013 }
1014
1015done:
1016 return err;
1017}
1018
1019static bool btintel_firmware_version(struct hci_dev *hdev,
1020 u8 num, u8 ww, u8 yy,
1021 const struct firmware *fw,
1022 u32 *boot_addr)
1023{
1024 const u8 *fw_ptr;
1025
1026 fw_ptr = fw->data;
1027
1028 while (fw_ptr - fw->data < fw->size) {
1029 struct hci_command_hdr *cmd = (void *)(fw_ptr);
1030
1031 /* Each SKU has a different reset parameter to use in the
1032 * HCI_Intel_Reset command and it is embedded in the firmware
1033 * data. So, instead of using static value per SKU, check
1034 * the firmware data and save it for later use.
1035 */
1036 if (le16_to_cpu(cmd->opcode) == CMD_WRITE_BOOT_PARAMS) {
1037 struct cmd_write_boot_params *params;
1038
1039 params = (void *)(fw_ptr + sizeof(*cmd));
1040
1041 *boot_addr = le32_to_cpu(params->boot_addr);
1042
1043 bt_dev_info(hdev, "Boot Address: 0x%x", *boot_addr);
1044
1045 bt_dev_info(hdev, "Firmware Version: %u-%u.%u",
1046 params->fw_build_num, params->fw_build_ww,
1047 params->fw_build_yy);
1048
1049 return (num == params->fw_build_num &&
1050 ww == params->fw_build_ww &&
1051 yy == params->fw_build_yy);
1052 }
1053
1054 fw_ptr += sizeof(*cmd) + cmd->plen;
1055 }
1056
1057 return false;
1058}
1059
1060int btintel_download_firmware(struct hci_dev *hdev,
1061 struct intel_version *ver,
1062 const struct firmware *fw,
1063 u32 *boot_param)
1064{
1065 int err;
1066
1067 /* SfP and WsP don't seem to update the firmware version on file
1068 * so version checking is currently not possible.
1069 */
1070 switch (ver->hw_variant) {
1071 case 0x0b: /* SfP */
1072 case 0x0c: /* WsP */
1073 /* Skip version checking */
1074 break;
1075 default:
1076
1077 /* Skip download if firmware has the same version */
1078 if (btintel_firmware_version(hdev, ver->fw_build_num,
1079 ver->fw_build_ww, ver->fw_build_yy,
1080 fw, boot_param)) {
1081 bt_dev_info(hdev, "Firmware already loaded");
1082 /* Return -EALREADY to indicate that the firmware has
1083 * already been loaded.
1084 */
1085 return -EALREADY;
1086 }
1087 }
1088
1089 /* The firmware variant determines if the device is in bootloader
1090 * mode or is running operational firmware. The value 0x06 identifies
1091 * the bootloader and the value 0x23 identifies the operational
1092 * firmware.
1093 *
1094 * If the firmware version has changed that means it needs to be reset
1095 * to bootloader when operational so the new firmware can be loaded.
1096 */
1097 if (ver->fw_variant == 0x23)
1098 return -EINVAL;
1099
1100 err = btintel_sfi_rsa_header_secure_send(hdev, fw);
1101 if (err)
1102 return err;
1103
1104 return btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN);
1105}
1106EXPORT_SYMBOL_GPL(btintel_download_firmware);
1107
1108static int btintel_download_fw_tlv(struct hci_dev *hdev,
1109 struct intel_version_tlv *ver,
1110 const struct firmware *fw, u32 *boot_param,
1111 u8 hw_variant, u8 sbe_type)
1112{
1113 int err;
1114 u32 css_header_ver;
1115
1116 /* Skip download if firmware has the same version */
1117 if (btintel_firmware_version(hdev, ver->min_fw_build_nn,
1118 ver->min_fw_build_cw,
1119 ver->min_fw_build_yy,
1120 fw, boot_param)) {
1121 bt_dev_info(hdev, "Firmware already loaded");
1122 /* Return -EALREADY to indicate that firmware has
1123 * already been loaded.
1124 */
1125 return -EALREADY;
1126 }
1127
1128 /* The firmware variant determines if the device is in bootloader
1129 * mode or is running operational firmware. The value 0x01 identifies
1130 * the bootloader and the value 0x03 identifies the operational
1131 * firmware.
1132 *
1133 * If the firmware version has changed that means it needs to be reset
1134 * to bootloader when operational so the new firmware can be loaded.
1135 */
1136 if (ver->img_type == 0x03)
1137 return -EINVAL;
1138
1139 /* iBT hardware variants 0x0b, 0x0c, 0x11, 0x12, 0x13, 0x14 support
1140 * only RSA secure boot engine. Hence, the corresponding sfi file will
1141 * have RSA header of 644 bytes followed by Command Buffer.
1142 *
1143 * iBT hardware variants 0x17, 0x18 onwards support both RSA and ECDSA
1144 * secure boot engine. As a result, the corresponding sfi file will
1145 * have RSA header of 644, ECDSA header of 320 bytes followed by
1146 * Command Buffer.
1147 *
1148 * CSS Header byte positions 0x08 to 0x0B represent the CSS Header
1149 * version: RSA(0x00010000) , ECDSA (0x00020000)
1150 */
1151 css_header_ver = get_unaligned_le32(fw->data + CSS_HEADER_OFFSET);
1152 if (css_header_ver != 0x00010000) {
1153 bt_dev_err(hdev, "Invalid CSS Header version");
1154 return -EINVAL;
1155 }
1156
1157 if (hw_variant <= 0x14) {
1158 if (sbe_type != 0x00) {
1159 bt_dev_err(hdev, "Invalid SBE type for hardware variant (%d)",
1160 hw_variant);
1161 return -EINVAL;
1162 }
1163
1164 err = btintel_sfi_rsa_header_secure_send(hdev, fw);
1165 if (err)
1166 return err;
1167
1168 err = btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN);
1169 if (err)
1170 return err;
1171 } else if (hw_variant >= 0x17) {
1172 /* Check if CSS header for ECDSA follows the RSA header */
1173 if (fw->data[ECDSA_OFFSET] != 0x06)
1174 return -EINVAL;
1175
1176 /* Check if the CSS Header version is ECDSA(0x00020000) */
1177 css_header_ver = get_unaligned_le32(fw->data + ECDSA_OFFSET + CSS_HEADER_OFFSET);
1178 if (css_header_ver != 0x00020000) {
1179 bt_dev_err(hdev, "Invalid CSS Header version");
1180 return -EINVAL;
1181 }
1182
1183 if (sbe_type == 0x00) {
1184 err = btintel_sfi_rsa_header_secure_send(hdev, fw);
1185 if (err)
1186 return err;
1187
1188 err = btintel_download_firmware_payload(hdev, fw,
1189 RSA_HEADER_LEN + ECDSA_HEADER_LEN);
1190 if (err)
1191 return err;
1192 } else if (sbe_type == 0x01) {
1193 err = btintel_sfi_ecdsa_header_secure_send(hdev, fw);
1194 if (err)
1195 return err;
1196
1197 err = btintel_download_firmware_payload(hdev, fw,
1198 RSA_HEADER_LEN + ECDSA_HEADER_LEN);
1199 if (err)
1200 return err;
1201 }
1202 }
1203 return 0;
1204}
1205
1206static void btintel_reset_to_bootloader(struct hci_dev *hdev)
1207{
1208 struct intel_reset params;
1209 struct sk_buff *skb;
1210
1211 /* Send Intel Reset command. This will result in
1212 * re-enumeration of BT controller.
1213 *
1214 * Intel Reset parameter description:
1215 * reset_type : 0x00 (Soft reset),
1216 * 0x01 (Hard reset)
1217 * patch_enable : 0x00 (Do not enable),
1218 * 0x01 (Enable)
1219 * ddc_reload : 0x00 (Do not reload),
1220 * 0x01 (Reload)
1221 * boot_option: 0x00 (Current image),
1222 * 0x01 (Specified boot address)
1223 * boot_param: Boot address
1224 *
1225 */
1226 params.reset_type = 0x01;
1227 params.patch_enable = 0x01;
1228 params.ddc_reload = 0x01;
1229 params.boot_option = 0x00;
1230 params.boot_param = cpu_to_le32(0x00000000);
1231
1232 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(params),
1233 ¶ms, HCI_INIT_TIMEOUT);
1234 if (IS_ERR(skb)) {
1235 bt_dev_err(hdev, "FW download error recovery failed (%ld)",
1236 PTR_ERR(skb));
1237 return;
1238 }
1239 bt_dev_info(hdev, "Intel reset sent to retry FW download");
1240 kfree_skb(skb);
1241
1242 /* Current Intel BT controllers(ThP/JfP) hold the USB reset
1243 * lines for 2ms when it receives Intel Reset in bootloader mode.
1244 * Whereas, the upcoming Intel BT controllers will hold USB reset
1245 * for 150ms. To keep the delay generic, 150ms is chosen here.
1246 */
1247 msleep(150);
1248}
1249
1250static int btintel_read_debug_features(struct hci_dev *hdev,
1251 struct intel_debug_features *features)
1252{
1253 struct sk_buff *skb;
1254 u8 page_no = 1;
1255
1256 /* Intel controller supports two pages, each page is of 128-bit
1257 * feature bit mask. And each bit defines specific feature support
1258 */
1259 skb = __hci_cmd_sync(hdev, 0xfca6, sizeof(page_no), &page_no,
1260 HCI_INIT_TIMEOUT);
1261 if (IS_ERR(skb)) {
1262 bt_dev_err(hdev, "Reading supported features failed (%ld)",
1263 PTR_ERR(skb));
1264 return PTR_ERR(skb);
1265 }
1266
1267 if (skb->len != (sizeof(features->page1) + 3)) {
1268 bt_dev_err(hdev, "Supported features event size mismatch");
1269 kfree_skb(skb);
1270 return -EILSEQ;
1271 }
1272
1273 memcpy(features->page1, skb->data + 3, sizeof(features->page1));
1274
1275 /* Read the supported features page2 if required in future.
1276 */
1277 kfree_skb(skb);
1278 return 0;
1279}
1280
1281static int btintel_set_debug_features(struct hci_dev *hdev,
1282 const struct intel_debug_features *features)
1283{
1284 u8 mask[11] = { 0x0a, 0x92, 0x02, 0x7f, 0x00, 0x00, 0x00, 0x00,
1285 0x00, 0x00, 0x00 };
1286 u8 period[5] = { 0x04, 0x91, 0x02, 0x05, 0x00 };
1287 u8 trace_enable = 0x02;
1288 struct sk_buff *skb;
1289
1290 if (!features) {
1291 bt_dev_warn(hdev, "Debug features not read");
1292 return -EINVAL;
1293 }
1294
1295 if (!(features->page1[0] & 0x3f)) {
1296 bt_dev_info(hdev, "Telemetry exception format not supported");
1297 return 0;
1298 }
1299
1300 skb = __hci_cmd_sync(hdev, 0xfc8b, 11, mask, HCI_INIT_TIMEOUT);
1301 if (IS_ERR(skb)) {
1302 bt_dev_err(hdev, "Setting Intel telemetry ddc write event mask failed (%ld)",
1303 PTR_ERR(skb));
1304 return PTR_ERR(skb);
1305 }
1306 kfree_skb(skb);
1307
1308 skb = __hci_cmd_sync(hdev, 0xfc8b, 5, period, HCI_INIT_TIMEOUT);
1309 if (IS_ERR(skb)) {
1310 bt_dev_err(hdev, "Setting periodicity for link statistics traces failed (%ld)",
1311 PTR_ERR(skb));
1312 return PTR_ERR(skb);
1313 }
1314 kfree_skb(skb);
1315
1316 skb = __hci_cmd_sync(hdev, 0xfca1, 1, &trace_enable, HCI_INIT_TIMEOUT);
1317 if (IS_ERR(skb)) {
1318 bt_dev_err(hdev, "Enable tracing of link statistics events failed (%ld)",
1319 PTR_ERR(skb));
1320 return PTR_ERR(skb);
1321 }
1322 kfree_skb(skb);
1323
1324 bt_dev_info(hdev, "set debug features: trace_enable 0x%02x mask 0x%02x",
1325 trace_enable, mask[3]);
1326
1327 return 0;
1328}
1329
1330static int btintel_reset_debug_features(struct hci_dev *hdev,
1331 const struct intel_debug_features *features)
1332{
1333 u8 mask[11] = { 0x0a, 0x92, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
1334 0x00, 0x00, 0x00 };
1335 u8 trace_enable = 0x00;
1336 struct sk_buff *skb;
1337
1338 if (!features) {
1339 bt_dev_warn(hdev, "Debug features not read");
1340 return -EINVAL;
1341 }
1342
1343 if (!(features->page1[0] & 0x3f)) {
1344 bt_dev_info(hdev, "Telemetry exception format not supported");
1345 return 0;
1346 }
1347
1348 /* Should stop the trace before writing ddc event mask. */
1349 skb = __hci_cmd_sync(hdev, 0xfca1, 1, &trace_enable, HCI_INIT_TIMEOUT);
1350 if (IS_ERR(skb)) {
1351 bt_dev_err(hdev, "Stop tracing of link statistics events failed (%ld)",
1352 PTR_ERR(skb));
1353 return PTR_ERR(skb);
1354 }
1355 kfree_skb(skb);
1356
1357 skb = __hci_cmd_sync(hdev, 0xfc8b, 11, mask, HCI_INIT_TIMEOUT);
1358 if (IS_ERR(skb)) {
1359 bt_dev_err(hdev, "Setting Intel telemetry ddc write event mask failed (%ld)",
1360 PTR_ERR(skb));
1361 return PTR_ERR(skb);
1362 }
1363 kfree_skb(skb);
1364
1365 bt_dev_info(hdev, "reset debug features: trace_enable 0x%02x mask 0x%02x",
1366 trace_enable, mask[3]);
1367
1368 return 0;
1369}
1370
1371int btintel_set_quality_report(struct hci_dev *hdev, bool enable)
1372{
1373 struct intel_debug_features features;
1374 int err;
1375
1376 bt_dev_dbg(hdev, "enable %d", enable);
1377
1378 /* Read the Intel supported features and if new exception formats
1379 * supported, need to load the additional DDC config to enable.
1380 */
1381 err = btintel_read_debug_features(hdev, &features);
1382 if (err)
1383 return err;
1384
1385 /* Set or reset the debug features. */
1386 if (enable)
1387 err = btintel_set_debug_features(hdev, &features);
1388 else
1389 err = btintel_reset_debug_features(hdev, &features);
1390
1391 return err;
1392}
1393EXPORT_SYMBOL_GPL(btintel_set_quality_report);
1394
1395static const struct firmware *btintel_legacy_rom_get_fw(struct hci_dev *hdev,
1396 struct intel_version *ver)
1397{
1398 const struct firmware *fw;
1399 char fwname[64];
1400 int ret;
1401
1402 snprintf(fwname, sizeof(fwname),
1403 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1404 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1405 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1406 ver->fw_build_ww, ver->fw_build_yy);
1407
1408 ret = request_firmware(&fw, fwname, &hdev->dev);
1409 if (ret < 0) {
1410 if (ret == -EINVAL) {
1411 bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1412 ret);
1413 return NULL;
1414 }
1415
1416 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1417 fwname, ret);
1418
1419 /* If the correct firmware patch file is not found, use the
1420 * default firmware patch file instead
1421 */
1422 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1423 ver->hw_platform, ver->hw_variant);
1424 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1425 bt_dev_err(hdev, "failed to open default fw file: %s",
1426 fwname);
1427 return NULL;
1428 }
1429 }
1430
1431 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1432
1433 return fw;
1434}
1435
1436static int btintel_legacy_rom_patching(struct hci_dev *hdev,
1437 const struct firmware *fw,
1438 const u8 **fw_ptr, int *disable_patch)
1439{
1440 struct sk_buff *skb;
1441 struct hci_command_hdr *cmd;
1442 const u8 *cmd_param;
1443 struct hci_event_hdr *evt = NULL;
1444 const u8 *evt_param = NULL;
1445 int remain = fw->size - (*fw_ptr - fw->data);
1446
1447 /* The first byte indicates the types of the patch command or event.
1448 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1449 * in the current firmware buffer doesn't start with 0x01 or
1450 * the size of remain buffer is smaller than HCI command header,
1451 * the firmware file is corrupted and it should stop the patching
1452 * process.
1453 */
1454 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1455 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1456 return -EINVAL;
1457 }
1458 (*fw_ptr)++;
1459 remain--;
1460
1461 cmd = (struct hci_command_hdr *)(*fw_ptr);
1462 *fw_ptr += sizeof(*cmd);
1463 remain -= sizeof(*cmd);
1464
1465 /* Ensure that the remain firmware data is long enough than the length
1466 * of command parameter. If not, the firmware file is corrupted.
1467 */
1468 if (remain < cmd->plen) {
1469 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1470 return -EFAULT;
1471 }
1472
1473 /* If there is a command that loads a patch in the firmware
1474 * file, then enable the patch upon success, otherwise just
1475 * disable the manufacturer mode, for example patch activation
1476 * is not required when the default firmware patch file is used
1477 * because there are no patch data to load.
1478 */
1479 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1480 *disable_patch = 0;
1481
1482 cmd_param = *fw_ptr;
1483 *fw_ptr += cmd->plen;
1484 remain -= cmd->plen;
1485
1486 /* This reads the expected events when the above command is sent to the
1487 * device. Some vendor commands expects more than one events, for
1488 * example command status event followed by vendor specific event.
1489 * For this case, it only keeps the last expected event. so the command
1490 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1491 * last expected event.
1492 */
1493 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1494 (*fw_ptr)++;
1495 remain--;
1496
1497 evt = (struct hci_event_hdr *)(*fw_ptr);
1498 *fw_ptr += sizeof(*evt);
1499 remain -= sizeof(*evt);
1500
1501 if (remain < evt->plen) {
1502 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1503 return -EFAULT;
1504 }
1505
1506 evt_param = *fw_ptr;
1507 *fw_ptr += evt->plen;
1508 remain -= evt->plen;
1509 }
1510
1511 /* Every HCI commands in the firmware file has its correspond event.
1512 * If event is not found or remain is smaller than zero, the firmware
1513 * file is corrupted.
1514 */
1515 if (!evt || !evt_param || remain < 0) {
1516 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1517 return -EFAULT;
1518 }
1519
1520 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1521 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1522 if (IS_ERR(skb)) {
1523 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1524 cmd->opcode, PTR_ERR(skb));
1525 return PTR_ERR(skb);
1526 }
1527
1528 /* It ensures that the returned event matches the event data read from
1529 * the firmware file. At fist, it checks the length and then
1530 * the contents of the event.
1531 */
1532 if (skb->len != evt->plen) {
1533 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1534 le16_to_cpu(cmd->opcode));
1535 kfree_skb(skb);
1536 return -EFAULT;
1537 }
1538
1539 if (memcmp(skb->data, evt_param, evt->plen)) {
1540 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1541 le16_to_cpu(cmd->opcode));
1542 kfree_skb(skb);
1543 return -EFAULT;
1544 }
1545 kfree_skb(skb);
1546
1547 return 0;
1548}
1549
1550static int btintel_legacy_rom_setup(struct hci_dev *hdev,
1551 struct intel_version *ver)
1552{
1553 const struct firmware *fw;
1554 const u8 *fw_ptr;
1555 int disable_patch, err;
1556 struct intel_version new_ver;
1557
1558 BT_DBG("%s", hdev->name);
1559
1560 /* fw_patch_num indicates the version of patch the device currently
1561 * have. If there is no patch data in the device, it is always 0x00.
1562 * So, if it is other than 0x00, no need to patch the device again.
1563 */
1564 if (ver->fw_patch_num) {
1565 bt_dev_info(hdev,
1566 "Intel device is already patched. patch num: %02x",
1567 ver->fw_patch_num);
1568 goto complete;
1569 }
1570
1571 /* Opens the firmware patch file based on the firmware version read
1572 * from the controller. If it fails to open the matching firmware
1573 * patch file, it tries to open the default firmware patch file.
1574 * If no patch file is found, allow the device to operate without
1575 * a patch.
1576 */
1577 fw = btintel_legacy_rom_get_fw(hdev, ver);
1578 if (!fw)
1579 goto complete;
1580 fw_ptr = fw->data;
1581
1582 /* Enable the manufacturer mode of the controller.
1583 * Only while this mode is enabled, the driver can download the
1584 * firmware patch data and configuration parameters.
1585 */
1586 err = btintel_enter_mfg(hdev);
1587 if (err) {
1588 release_firmware(fw);
1589 return err;
1590 }
1591
1592 disable_patch = 1;
1593
1594 /* The firmware data file consists of list of Intel specific HCI
1595 * commands and its expected events. The first byte indicates the
1596 * type of the message, either HCI command or HCI event.
1597 *
1598 * It reads the command and its expected event from the firmware file,
1599 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1600 * the returned event is compared with the event read from the firmware
1601 * file and it will continue until all the messages are downloaded to
1602 * the controller.
1603 *
1604 * Once the firmware patching is completed successfully,
1605 * the manufacturer mode is disabled with reset and activating the
1606 * downloaded patch.
1607 *
1608 * If the firmware patching fails, the manufacturer mode is
1609 * disabled with reset and deactivating the patch.
1610 *
1611 * If the default patch file is used, no reset is done when disabling
1612 * the manufacturer.
1613 */
1614 while (fw->size > fw_ptr - fw->data) {
1615 int ret;
1616
1617 ret = btintel_legacy_rom_patching(hdev, fw, &fw_ptr,
1618 &disable_patch);
1619 if (ret < 0)
1620 goto exit_mfg_deactivate;
1621 }
1622
1623 release_firmware(fw);
1624
1625 if (disable_patch)
1626 goto exit_mfg_disable;
1627
1628 /* Patching completed successfully and disable the manufacturer mode
1629 * with reset and activate the downloaded firmware patches.
1630 */
1631 err = btintel_exit_mfg(hdev, true, true);
1632 if (err)
1633 return err;
1634
1635 /* Need build number for downloaded fw patches in
1636 * every power-on boot
1637 */
1638 err = btintel_read_version(hdev, &new_ver);
1639 if (err)
1640 return err;
1641
1642 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
1643 new_ver.fw_patch_num);
1644
1645 goto complete;
1646
1647exit_mfg_disable:
1648 /* Disable the manufacturer mode without reset */
1649 err = btintel_exit_mfg(hdev, false, false);
1650 if (err)
1651 return err;
1652
1653 bt_dev_info(hdev, "Intel firmware patch completed");
1654
1655 goto complete;
1656
1657exit_mfg_deactivate:
1658 release_firmware(fw);
1659
1660 /* Patching failed. Disable the manufacturer mode with reset and
1661 * deactivate the downloaded firmware patches.
1662 */
1663 err = btintel_exit_mfg(hdev, true, false);
1664 if (err)
1665 return err;
1666
1667 bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1668
1669complete:
1670 /* Set the event mask for Intel specific vendor events. This enables
1671 * a few extra events that are useful during general operation.
1672 */
1673 btintel_set_event_mask_mfg(hdev, false);
1674
1675 btintel_check_bdaddr(hdev);
1676
1677 return 0;
1678}
1679
1680static int btintel_download_wait(struct hci_dev *hdev, ktime_t calltime, int msec)
1681{
1682 ktime_t delta, rettime;
1683 unsigned long long duration;
1684 int err;
1685
1686 btintel_set_flag(hdev, INTEL_FIRMWARE_LOADED);
1687
1688 bt_dev_info(hdev, "Waiting for firmware download to complete");
1689
1690 err = btintel_wait_on_flag_timeout(hdev, INTEL_DOWNLOADING,
1691 TASK_INTERRUPTIBLE,
1692 msecs_to_jiffies(msec));
1693 if (err == -EINTR) {
1694 bt_dev_err(hdev, "Firmware loading interrupted");
1695 return err;
1696 }
1697
1698 if (err) {
1699 bt_dev_err(hdev, "Firmware loading timeout");
1700 return -ETIMEDOUT;
1701 }
1702
1703 if (btintel_test_flag(hdev, INTEL_FIRMWARE_FAILED)) {
1704 bt_dev_err(hdev, "Firmware loading failed");
1705 return -ENOEXEC;
1706 }
1707
1708 rettime = ktime_get();
1709 delta = ktime_sub(rettime, calltime);
1710 duration = (unsigned long long)ktime_to_ns(delta) >> 10;
1711
1712 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
1713
1714 return 0;
1715}
1716
1717static int btintel_boot_wait(struct hci_dev *hdev, ktime_t calltime, int msec)
1718{
1719 ktime_t delta, rettime;
1720 unsigned long long duration;
1721 int err;
1722
1723 bt_dev_info(hdev, "Waiting for device to boot");
1724
1725 err = btintel_wait_on_flag_timeout(hdev, INTEL_BOOTING,
1726 TASK_INTERRUPTIBLE,
1727 msecs_to_jiffies(msec));
1728 if (err == -EINTR) {
1729 bt_dev_err(hdev, "Device boot interrupted");
1730 return -EINTR;
1731 }
1732
1733 if (err) {
1734 bt_dev_err(hdev, "Device boot timeout");
1735 return -ETIMEDOUT;
1736 }
1737
1738 rettime = ktime_get();
1739 delta = ktime_sub(rettime, calltime);
1740 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
1741
1742 bt_dev_info(hdev, "Device booted in %llu usecs", duration);
1743
1744 return 0;
1745}
1746
1747static int btintel_boot(struct hci_dev *hdev, u32 boot_addr)
1748{
1749 ktime_t calltime;
1750 int err;
1751
1752 calltime = ktime_get();
1753
1754 btintel_set_flag(hdev, INTEL_BOOTING);
1755
1756 err = btintel_send_intel_reset(hdev, boot_addr);
1757 if (err) {
1758 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
1759 btintel_reset_to_bootloader(hdev);
1760 return err;
1761 }
1762
1763 /* The bootloader will not indicate when the device is ready. This
1764 * is done by the operational firmware sending bootup notification.
1765 *
1766 * Booting into operational firmware should not take longer than
1767 * 1 second. However if that happens, then just fail the setup
1768 * since something went wrong.
1769 */
1770 err = btintel_boot_wait(hdev, calltime, 1000);
1771 if (err == -ETIMEDOUT)
1772 btintel_reset_to_bootloader(hdev);
1773
1774 return err;
1775}
1776
1777static int btintel_get_fw_name(struct intel_version *ver,
1778 struct intel_boot_params *params,
1779 char *fw_name, size_t len,
1780 const char *suffix)
1781{
1782 switch (ver->hw_variant) {
1783 case 0x0b: /* SfP */
1784 case 0x0c: /* WsP */
1785 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
1786 ver->hw_variant,
1787 le16_to_cpu(params->dev_revid),
1788 suffix);
1789 break;
1790 case 0x11: /* JfP */
1791 case 0x12: /* ThP */
1792 case 0x13: /* HrP */
1793 case 0x14: /* CcP */
1794 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
1795 ver->hw_variant,
1796 ver->hw_revision,
1797 ver->fw_revision,
1798 suffix);
1799 break;
1800 default:
1801 return -EINVAL;
1802 }
1803
1804 return 0;
1805}
1806
1807static int btintel_download_fw(struct hci_dev *hdev,
1808 struct intel_version *ver,
1809 struct intel_boot_params *params,
1810 u32 *boot_param)
1811{
1812 const struct firmware *fw;
1813 char fwname[64];
1814 int err;
1815 ktime_t calltime;
1816
1817 if (!ver || !params)
1818 return -EINVAL;
1819
1820 /* The firmware variant determines if the device is in bootloader
1821 * mode or is running operational firmware. The value 0x06 identifies
1822 * the bootloader and the value 0x23 identifies the operational
1823 * firmware.
1824 *
1825 * When the operational firmware is already present, then only
1826 * the check for valid Bluetooth device address is needed. This
1827 * determines if the device will be added as configured or
1828 * unconfigured controller.
1829 *
1830 * It is not possible to use the Secure Boot Parameters in this
1831 * case since that command is only available in bootloader mode.
1832 */
1833 if (ver->fw_variant == 0x23) {
1834 btintel_clear_flag(hdev, INTEL_BOOTLOADER);
1835 btintel_check_bdaddr(hdev);
1836
1837 /* SfP and WsP don't seem to update the firmware version on file
1838 * so version checking is currently possible.
1839 */
1840 switch (ver->hw_variant) {
1841 case 0x0b: /* SfP */
1842 case 0x0c: /* WsP */
1843 return 0;
1844 }
1845
1846 /* Proceed to download to check if the version matches */
1847 goto download;
1848 }
1849
1850 /* Read the secure boot parameters to identify the operating
1851 * details of the bootloader.
1852 */
1853 err = btintel_read_boot_params(hdev, params);
1854 if (err)
1855 return err;
1856
1857 /* It is required that every single firmware fragment is acknowledged
1858 * with a command complete event. If the boot parameters indicate
1859 * that this bootloader does not send them, then abort the setup.
1860 */
1861 if (params->limited_cce != 0x00) {
1862 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
1863 params->limited_cce);
1864 return -EINVAL;
1865 }
1866
1867 /* If the OTP has no valid Bluetooth device address, then there will
1868 * also be no valid address for the operational firmware.
1869 */
1870 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
1871 bt_dev_info(hdev, "No device address configured");
1872 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1873 }
1874
1875download:
1876 /* With this Intel bootloader only the hardware variant and device
1877 * revision information are used to select the right firmware for SfP
1878 * and WsP.
1879 *
1880 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
1881 *
1882 * Currently the supported hardware variants are:
1883 * 11 (0x0b) for iBT3.0 (LnP/SfP)
1884 * 12 (0x0c) for iBT3.5 (WsP)
1885 *
1886 * For ThP/JfP and for future SKU's, the FW name varies based on HW
1887 * variant, HW revision and FW revision, as these are dependent on CNVi
1888 * and RF Combination.
1889 *
1890 * 17 (0x11) for iBT3.5 (JfP)
1891 * 18 (0x12) for iBT3.5 (ThP)
1892 *
1893 * The firmware file name for these will be
1894 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
1895 *
1896 */
1897 err = btintel_get_fw_name(ver, params, fwname, sizeof(fwname), "sfi");
1898 if (err < 0) {
1899 if (!btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
1900 /* Firmware has already been loaded */
1901 btintel_set_flag(hdev, INTEL_FIRMWARE_LOADED);
1902 return 0;
1903 }
1904
1905 bt_dev_err(hdev, "Unsupported Intel firmware naming");
1906 return -EINVAL;
1907 }
1908
1909 err = firmware_request_nowarn(&fw, fwname, &hdev->dev);
1910 if (err < 0) {
1911 if (!btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
1912 /* Firmware has already been loaded */
1913 btintel_set_flag(hdev, INTEL_FIRMWARE_LOADED);
1914 return 0;
1915 }
1916
1917 bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)",
1918 fwname, err);
1919 return err;
1920 }
1921
1922 bt_dev_info(hdev, "Found device firmware: %s", fwname);
1923
1924 if (fw->size < 644) {
1925 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
1926 fw->size);
1927 err = -EBADF;
1928 goto done;
1929 }
1930
1931 calltime = ktime_get();
1932
1933 btintel_set_flag(hdev, INTEL_DOWNLOADING);
1934
1935 /* Start firmware downloading and get boot parameter */
1936 err = btintel_download_firmware(hdev, ver, fw, boot_param);
1937 if (err < 0) {
1938 if (err == -EALREADY) {
1939 /* Firmware has already been loaded */
1940 btintel_set_flag(hdev, INTEL_FIRMWARE_LOADED);
1941 err = 0;
1942 goto done;
1943 }
1944
1945 /* When FW download fails, send Intel Reset to retry
1946 * FW download.
1947 */
1948 btintel_reset_to_bootloader(hdev);
1949 goto done;
1950 }
1951
1952 /* Before switching the device into operational mode and with that
1953 * booting the loaded firmware, wait for the bootloader notification
1954 * that all fragments have been successfully received.
1955 *
1956 * When the event processing receives the notification, then the
1957 * INTEL_DOWNLOADING flag will be cleared.
1958 *
1959 * The firmware loading should not take longer than 5 seconds
1960 * and thus just timeout if that happens and fail the setup
1961 * of this device.
1962 */
1963 err = btintel_download_wait(hdev, calltime, 5000);
1964 if (err == -ETIMEDOUT)
1965 btintel_reset_to_bootloader(hdev);
1966
1967done:
1968 release_firmware(fw);
1969 return err;
1970}
1971
1972static int btintel_bootloader_setup(struct hci_dev *hdev,
1973 struct intel_version *ver)
1974{
1975 struct intel_version new_ver;
1976 struct intel_boot_params params;
1977 u32 boot_param;
1978 char ddcname[64];
1979 int err;
1980
1981 BT_DBG("%s", hdev->name);
1982
1983 /* Set the default boot parameter to 0x0 and it is updated to
1984 * SKU specific boot parameter after reading Intel_Write_Boot_Params
1985 * command while downloading the firmware.
1986 */
1987 boot_param = 0x00000000;
1988
1989 btintel_set_flag(hdev, INTEL_BOOTLOADER);
1990
1991 err = btintel_download_fw(hdev, ver, ¶ms, &boot_param);
1992 if (err)
1993 return err;
1994
1995 /* controller is already having an operational firmware */
1996 if (ver->fw_variant == 0x23)
1997 goto finish;
1998
1999 err = btintel_boot(hdev, boot_param);
2000 if (err)
2001 return err;
2002
2003 btintel_clear_flag(hdev, INTEL_BOOTLOADER);
2004
2005 err = btintel_get_fw_name(ver, ¶ms, ddcname,
2006 sizeof(ddcname), "ddc");
2007
2008 if (err < 0) {
2009 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2010 } else {
2011 /* Once the device is running in operational mode, it needs to
2012 * apply the device configuration (DDC) parameters.
2013 *
2014 * The device can work without DDC parameters, so even if it
2015 * fails to load the file, no need to fail the setup.
2016 */
2017 btintel_load_ddc_config(hdev, ddcname);
2018 }
2019
2020 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);
2021
2022 /* Read the Intel version information after loading the FW */
2023 err = btintel_read_version(hdev, &new_ver);
2024 if (err)
2025 return err;
2026
2027 btintel_version_info(hdev, &new_ver);
2028
2029finish:
2030 /* Set the event mask for Intel specific vendor events. This enables
2031 * a few extra events that are useful during general operation. It
2032 * does not enable any debugging related events.
2033 *
2034 * The device will function correctly without these events enabled
2035 * and thus no need to fail the setup.
2036 */
2037 btintel_set_event_mask(hdev, false);
2038
2039 return 0;
2040}
2041
2042static void btintel_get_fw_name_tlv(const struct intel_version_tlv *ver,
2043 char *fw_name, size_t len,
2044 const char *suffix)
2045{
2046 /* The firmware file name for new generation controllers will be
2047 * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step>
2048 */
2049 snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s",
2050 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvi_top),
2051 INTEL_CNVX_TOP_STEP(ver->cnvi_top)),
2052 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvr_top),
2053 INTEL_CNVX_TOP_STEP(ver->cnvr_top)),
2054 suffix);
2055}
2056
2057static int btintel_prepare_fw_download_tlv(struct hci_dev *hdev,
2058 struct intel_version_tlv *ver,
2059 u32 *boot_param)
2060{
2061 const struct firmware *fw;
2062 char fwname[64];
2063 int err;
2064 ktime_t calltime;
2065
2066 if (!ver || !boot_param)
2067 return -EINVAL;
2068
2069 /* The firmware variant determines if the device is in bootloader
2070 * mode or is running operational firmware. The value 0x03 identifies
2071 * the bootloader and the value 0x23 identifies the operational
2072 * firmware.
2073 *
2074 * When the operational firmware is already present, then only
2075 * the check for valid Bluetooth device address is needed. This
2076 * determines if the device will be added as configured or
2077 * unconfigured controller.
2078 *
2079 * It is not possible to use the Secure Boot Parameters in this
2080 * case since that command is only available in bootloader mode.
2081 */
2082 if (ver->img_type == 0x03) {
2083 btintel_clear_flag(hdev, INTEL_BOOTLOADER);
2084 btintel_check_bdaddr(hdev);
2085 } else {
2086 /*
2087 * Check for valid bd address in boot loader mode. Device
2088 * will be marked as unconfigured if empty bd address is
2089 * found.
2090 */
2091 if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) {
2092 bt_dev_info(hdev, "No device address configured");
2093 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2094 }
2095 }
2096
2097 btintel_get_fw_name_tlv(ver, fwname, sizeof(fwname), "sfi");
2098 err = firmware_request_nowarn(&fw, fwname, &hdev->dev);
2099 if (err < 0) {
2100 if (!btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2101 /* Firmware has already been loaded */
2102 btintel_set_flag(hdev, INTEL_FIRMWARE_LOADED);
2103 return 0;
2104 }
2105
2106 bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)",
2107 fwname, err);
2108
2109 return err;
2110 }
2111
2112 bt_dev_info(hdev, "Found device firmware: %s", fwname);
2113
2114 if (fw->size < 644) {
2115 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2116 fw->size);
2117 err = -EBADF;
2118 goto done;
2119 }
2120
2121 calltime = ktime_get();
2122
2123 btintel_set_flag(hdev, INTEL_DOWNLOADING);
2124
2125 /* Start firmware downloading and get boot parameter */
2126 err = btintel_download_fw_tlv(hdev, ver, fw, boot_param,
2127 INTEL_HW_VARIANT(ver->cnvi_bt),
2128 ver->sbe_type);
2129 if (err < 0) {
2130 if (err == -EALREADY) {
2131 /* Firmware has already been loaded */
2132 btintel_set_flag(hdev, INTEL_FIRMWARE_LOADED);
2133 err = 0;
2134 goto done;
2135 }
2136
2137 /* When FW download fails, send Intel Reset to retry
2138 * FW download.
2139 */
2140 btintel_reset_to_bootloader(hdev);
2141 goto done;
2142 }
2143
2144 /* Before switching the device into operational mode and with that
2145 * booting the loaded firmware, wait for the bootloader notification
2146 * that all fragments have been successfully received.
2147 *
2148 * When the event processing receives the notification, then the
2149 * BTUSB_DOWNLOADING flag will be cleared.
2150 *
2151 * The firmware loading should not take longer than 5 seconds
2152 * and thus just timeout if that happens and fail the setup
2153 * of this device.
2154 */
2155 err = btintel_download_wait(hdev, calltime, 5000);
2156 if (err == -ETIMEDOUT)
2157 btintel_reset_to_bootloader(hdev);
2158
2159done:
2160 release_firmware(fw);
2161 return err;
2162}
2163
2164static int btintel_get_codec_config_data(struct hci_dev *hdev,
2165 __u8 link, struct bt_codec *codec,
2166 __u8 *ven_len, __u8 **ven_data)
2167{
2168 int err = 0;
2169
2170 if (!ven_data || !ven_len)
2171 return -EINVAL;
2172
2173 *ven_len = 0;
2174 *ven_data = NULL;
2175
2176 if (link != ESCO_LINK) {
2177 bt_dev_err(hdev, "Invalid link type(%u)", link);
2178 return -EINVAL;
2179 }
2180
2181 *ven_data = kmalloc(sizeof(__u8), GFP_KERNEL);
2182 if (!*ven_data) {
2183 err = -ENOMEM;
2184 goto error;
2185 }
2186
2187 /* supports only CVSD and mSBC offload codecs */
2188 switch (codec->id) {
2189 case 0x02:
2190 **ven_data = 0x00;
2191 break;
2192 case 0x05:
2193 **ven_data = 0x01;
2194 break;
2195 default:
2196 err = -EINVAL;
2197 bt_dev_err(hdev, "Invalid codec id(%u)", codec->id);
2198 goto error;
2199 }
2200 /* codec and its capabilities are pre-defined to ids
2201 * preset id = 0x00 represents CVSD codec with sampling rate 8K
2202 * preset id = 0x01 represents mSBC codec with sampling rate 16K
2203 */
2204 *ven_len = sizeof(__u8);
2205 return err;
2206
2207error:
2208 kfree(*ven_data);
2209 *ven_data = NULL;
2210 return err;
2211}
2212
2213static int btintel_get_data_path_id(struct hci_dev *hdev, __u8 *data_path_id)
2214{
2215 /* Intel uses 1 as data path id for all the usecases */
2216 *data_path_id = 1;
2217 return 0;
2218}
2219
2220static int btintel_configure_offload(struct hci_dev *hdev)
2221{
2222 struct sk_buff *skb;
2223 int err = 0;
2224 struct intel_offload_use_cases *use_cases;
2225
2226 skb = __hci_cmd_sync(hdev, 0xfc86, 0, NULL, HCI_INIT_TIMEOUT);
2227 if (IS_ERR(skb)) {
2228 bt_dev_err(hdev, "Reading offload use cases failed (%ld)",
2229 PTR_ERR(skb));
2230 return PTR_ERR(skb);
2231 }
2232
2233 if (skb->len < sizeof(*use_cases)) {
2234 err = -EIO;
2235 goto error;
2236 }
2237
2238 use_cases = (void *)skb->data;
2239
2240 if (use_cases->status) {
2241 err = -bt_to_errno(skb->data[0]);
2242 goto error;
2243 }
2244
2245 if (use_cases->preset[0] & 0x03) {
2246 hdev->get_data_path_id = btintel_get_data_path_id;
2247 hdev->get_codec_config_data = btintel_get_codec_config_data;
2248 }
2249error:
2250 kfree_skb(skb);
2251 return err;
2252}
2253
2254static int btintel_bootloader_setup_tlv(struct hci_dev *hdev,
2255 struct intel_version_tlv *ver)
2256{
2257 u32 boot_param;
2258 char ddcname[64];
2259 int err;
2260 struct intel_version_tlv new_ver;
2261
2262 bt_dev_dbg(hdev, "");
2263
2264 /* Set the default boot parameter to 0x0 and it is updated to
2265 * SKU specific boot parameter after reading Intel_Write_Boot_Params
2266 * command while downloading the firmware.
2267 */
2268 boot_param = 0x00000000;
2269
2270 btintel_set_flag(hdev, INTEL_BOOTLOADER);
2271
2272 err = btintel_prepare_fw_download_tlv(hdev, ver, &boot_param);
2273 if (err)
2274 return err;
2275
2276 /* check if controller is already having an operational firmware */
2277 if (ver->img_type == 0x03)
2278 goto finish;
2279
2280 err = btintel_boot(hdev, boot_param);
2281 if (err)
2282 return err;
2283
2284 btintel_clear_flag(hdev, INTEL_BOOTLOADER);
2285
2286 btintel_get_fw_name_tlv(ver, ddcname, sizeof(ddcname), "ddc");
2287 /* Once the device is running in operational mode, it needs to
2288 * apply the device configuration (DDC) parameters.
2289 *
2290 * The device can work without DDC parameters, so even if it
2291 * fails to load the file, no need to fail the setup.
2292 */
2293 btintel_load_ddc_config(hdev, ddcname);
2294
2295 /* Read supported use cases and set callbacks to fetch datapath id */
2296 btintel_configure_offload(hdev);
2297
2298 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);
2299
2300 /* Read the Intel version information after loading the FW */
2301 err = btintel_read_version_tlv(hdev, &new_ver);
2302 if (err)
2303 return err;
2304
2305 btintel_version_info_tlv(hdev, &new_ver);
2306
2307finish:
2308 /* Set the event mask for Intel specific vendor events. This enables
2309 * a few extra events that are useful during general operation. It
2310 * does not enable any debugging related events.
2311 *
2312 * The device will function correctly without these events enabled
2313 * and thus no need to fail the setup.
2314 */
2315 btintel_set_event_mask(hdev, false);
2316
2317 return 0;
2318}
2319
2320static void btintel_set_msft_opcode(struct hci_dev *hdev, u8 hw_variant)
2321{
2322 switch (hw_variant) {
2323 /* Legacy bootloader devices that supports MSFT Extension */
2324 case 0x11: /* JfP */
2325 case 0x12: /* ThP */
2326 case 0x13: /* HrP */
2327 case 0x14: /* CcP */
2328 /* All Intel new genration controllers support the Microsoft vendor
2329 * extension are using 0xFC1E for VsMsftOpCode.
2330 */
2331 case 0x17:
2332 case 0x18:
2333 case 0x19:
2334 case 0x1b:
2335 hci_set_msft_opcode(hdev, 0xFC1E);
2336 break;
2337 default:
2338 /* Not supported */
2339 break;
2340 }
2341}
2342
2343static int btintel_setup_combined(struct hci_dev *hdev)
2344{
2345 const u8 param[1] = { 0xFF };
2346 struct intel_version ver;
2347 struct intel_version_tlv ver_tlv;
2348 struct sk_buff *skb;
2349 int err;
2350
2351 BT_DBG("%s", hdev->name);
2352
2353 /* The some controllers have a bug with the first HCI command sent to it
2354 * returning number of completed commands as zero. This would stall the
2355 * command processing in the Bluetooth core.
2356 *
2357 * As a workaround, send HCI Reset command first which will reset the
2358 * number of completed commands and allow normal command processing
2359 * from now on.
2360 *
2361 * Regarding the INTEL_BROKEN_SHUTDOWN_LED flag, these devices maybe
2362 * in the SW_RFKILL ON state as a workaround of fixing LED issue during
2363 * the shutdown() procedure, and once the device is in SW_RFKILL ON
2364 * state, the only way to exit out of it is sending the HCI_Reset
2365 * command.
2366 */
2367 if (btintel_test_flag(hdev, INTEL_BROKEN_INITIAL_NCMD) ||
2368 btintel_test_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED)) {
2369 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
2370 HCI_INIT_TIMEOUT);
2371 if (IS_ERR(skb)) {
2372 bt_dev_err(hdev,
2373 "sending initial HCI reset failed (%ld)",
2374 PTR_ERR(skb));
2375 return PTR_ERR(skb);
2376 }
2377 kfree_skb(skb);
2378 }
2379
2380 /* Starting from TyP device, the command parameter and response are
2381 * changed even though the OCF for HCI_Intel_Read_Version command
2382 * remains same. The legacy devices can handle even if the
2383 * command has a parameter and returns a correct version information.
2384 * So, it uses new format to support both legacy and new format.
2385 */
2386 skb = __hci_cmd_sync(hdev, 0xfc05, 1, param, HCI_CMD_TIMEOUT);
2387 if (IS_ERR(skb)) {
2388 bt_dev_err(hdev, "Reading Intel version command failed (%ld)",
2389 PTR_ERR(skb));
2390 return PTR_ERR(skb);
2391 }
2392
2393 /* Check the status */
2394 if (skb->data[0]) {
2395 bt_dev_err(hdev, "Intel Read Version command failed (%02x)",
2396 skb->data[0]);
2397 err = -EIO;
2398 goto exit_error;
2399 }
2400
2401 /* Apply the common HCI quirks for Intel device */
2402 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2403 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2404 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2405
2406 /* Set up the quality report callback for Intel devices */
2407 hdev->set_quality_report = btintel_set_quality_report;
2408
2409 /* For Legacy device, check the HW platform value and size */
2410 if (skb->len == sizeof(ver) && skb->data[1] == 0x37) {
2411 bt_dev_dbg(hdev, "Read the legacy Intel version information");
2412
2413 memcpy(&ver, skb->data, sizeof(ver));
2414
2415 /* Display version information */
2416 btintel_version_info(hdev, &ver);
2417
2418 /* Check for supported iBT hardware variants of this firmware
2419 * loading method.
2420 *
2421 * This check has been put in place to ensure correct forward
2422 * compatibility options when newer hardware variants come
2423 * along.
2424 */
2425 switch (ver.hw_variant) {
2426 case 0x07: /* WP */
2427 case 0x08: /* StP */
2428 /* Legacy ROM product */
2429 btintel_set_flag(hdev, INTEL_ROM_LEGACY);
2430
2431 /* Apply the device specific HCI quirks
2432 *
2433 * WBS for SdP - For the Legacy ROM products, only SdP
2434 * supports the WBS. But the version information is not
2435 * enough to use here because the StP2 and SdP have same
2436 * hw_variant and fw_variant. So, this flag is set by
2437 * the transport driver (btusb) based on the HW info
2438 * (idProduct)
2439 */
2440 if (!btintel_test_flag(hdev,
2441 INTEL_ROM_LEGACY_NO_WBS_SUPPORT))
2442 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED,
2443 &hdev->quirks);
2444 if (ver.hw_variant == 0x08 && ver.fw_variant == 0x22)
2445 set_bit(HCI_QUIRK_VALID_LE_STATES,
2446 &hdev->quirks);
2447
2448 err = btintel_legacy_rom_setup(hdev, &ver);
2449 break;
2450 case 0x0b: /* SfP */
2451 case 0x11: /* JfP */
2452 case 0x12: /* ThP */
2453 case 0x13: /* HrP */
2454 case 0x14: /* CcP */
2455 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
2456 fallthrough;
2457 case 0x0c: /* WsP */
2458 /* Apply the device specific HCI quirks
2459 *
2460 * All Legacy bootloader devices support WBS
2461 */
2462 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED,
2463 &hdev->quirks);
2464
2465 /* Setup MSFT Extension support */
2466 btintel_set_msft_opcode(hdev, ver.hw_variant);
2467
2468 err = btintel_bootloader_setup(hdev, &ver);
2469 break;
2470 default:
2471 bt_dev_err(hdev, "Unsupported Intel hw variant (%u)",
2472 ver.hw_variant);
2473 err = -EINVAL;
2474 }
2475
2476 goto exit_error;
2477 }
2478
2479 /* memset ver_tlv to start with clean state as few fields are exclusive
2480 * to bootloader mode and are not populated in operational mode
2481 */
2482 memset(&ver_tlv, 0, sizeof(ver_tlv));
2483 /* For TLV type device, parse the tlv data */
2484 err = btintel_parse_version_tlv(hdev, &ver_tlv, skb);
2485 if (err) {
2486 bt_dev_err(hdev, "Failed to parse TLV version information");
2487 goto exit_error;
2488 }
2489
2490 if (INTEL_HW_PLATFORM(ver_tlv.cnvi_bt) != 0x37) {
2491 bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)",
2492 INTEL_HW_PLATFORM(ver_tlv.cnvi_bt));
2493 err = -EINVAL;
2494 goto exit_error;
2495 }
2496
2497 /* Check for supported iBT hardware variants of this firmware
2498 * loading method.
2499 *
2500 * This check has been put in place to ensure correct forward
2501 * compatibility options when newer hardware variants come
2502 * along.
2503 */
2504 switch (INTEL_HW_VARIANT(ver_tlv.cnvi_bt)) {
2505 case 0x11: /* JfP */
2506 case 0x12: /* ThP */
2507 case 0x13: /* HrP */
2508 case 0x14: /* CcP */
2509 /* Some legacy bootloader devices starting from JfP,
2510 * the operational firmware supports both old and TLV based
2511 * HCI_Intel_Read_Version command based on the command
2512 * parameter.
2513 *
2514 * For upgrading firmware case, the TLV based version cannot
2515 * be used because the firmware filename for legacy bootloader
2516 * is based on the old format.
2517 *
2518 * Also, it is not easy to convert TLV based version from the
2519 * legacy version format.
2520 *
2521 * So, as a workaround for those devices, use the legacy
2522 * HCI_Intel_Read_Version to get the version information and
2523 * run the legacy bootloader setup.
2524 */
2525 err = btintel_read_version(hdev, &ver);
2526 if (err)
2527 break;
2528
2529 /* Apply the device specific HCI quirks
2530 *
2531 * All Legacy bootloader devices support WBS
2532 */
2533 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
2534
2535 /* Set Valid LE States quirk */
2536 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
2537
2538 /* Setup MSFT Extension support */
2539 btintel_set_msft_opcode(hdev, ver.hw_variant);
2540
2541 err = btintel_bootloader_setup(hdev, &ver);
2542 break;
2543 case 0x17:
2544 case 0x18:
2545 case 0x19:
2546 case 0x1b:
2547 /* Display version information of TLV type */
2548 btintel_version_info_tlv(hdev, &ver_tlv);
2549
2550 /* Apply the device specific HCI quirks for TLV based devices
2551 *
2552 * All TLV based devices support WBS
2553 */
2554 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
2555
2556 /* Valid LE States quirk for GfP */
2557 if (INTEL_HW_VARIANT(ver_tlv.cnvi_bt) == 0x18)
2558 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
2559
2560 /* Setup MSFT Extension support */
2561 btintel_set_msft_opcode(hdev,
2562 INTEL_HW_VARIANT(ver_tlv.cnvi_bt));
2563
2564 err = btintel_bootloader_setup_tlv(hdev, &ver_tlv);
2565 break;
2566 default:
2567 bt_dev_err(hdev, "Unsupported Intel hw variant (%u)",
2568 INTEL_HW_VARIANT(ver_tlv.cnvi_bt));
2569 err = -EINVAL;
2570 break;
2571 }
2572
2573exit_error:
2574 kfree_skb(skb);
2575
2576 return err;
2577}
2578
2579static int btintel_shutdown_combined(struct hci_dev *hdev)
2580{
2581 struct sk_buff *skb;
2582 int ret;
2583
2584 /* Send HCI Reset to the controller to stop any BT activity which
2585 * were triggered. This will help to save power and maintain the
2586 * sync b/w Host and controller
2587 */
2588 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2589 if (IS_ERR(skb)) {
2590 bt_dev_err(hdev, "HCI reset during shutdown failed");
2591 return PTR_ERR(skb);
2592 }
2593 kfree_skb(skb);
2594
2595
2596 /* Some platforms have an issue with BT LED when the interface is
2597 * down or BT radio is turned off, which takes 5 seconds to BT LED
2598 * goes off. As a workaround, sends HCI_Intel_SW_RFKILL to put the
2599 * device in the RFKILL ON state which turns off the BT LED immediately.
2600 */
2601 if (btintel_test_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED)) {
2602 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2603 if (IS_ERR(skb)) {
2604 ret = PTR_ERR(skb);
2605 bt_dev_err(hdev, "turning off Intel device LED failed");
2606 return ret;
2607 }
2608 kfree_skb(skb);
2609 }
2610
2611 return 0;
2612}
2613
2614int btintel_configure_setup(struct hci_dev *hdev)
2615{
2616 hdev->manufacturer = 2;
2617 hdev->setup = btintel_setup_combined;
2618 hdev->shutdown = btintel_shutdown_combined;
2619 hdev->hw_error = btintel_hw_error;
2620 hdev->set_diag = btintel_set_diag_combined;
2621 hdev->set_bdaddr = btintel_set_bdaddr;
2622
2623 return 0;
2624}
2625EXPORT_SYMBOL_GPL(btintel_configure_setup);
2626
2627void btintel_bootup(struct hci_dev *hdev, const void *ptr, unsigned int len)
2628{
2629 const struct intel_bootup *evt = ptr;
2630
2631 if (len != sizeof(*evt))
2632 return;
2633
2634 if (btintel_test_and_clear_flag(hdev, INTEL_BOOTING))
2635 btintel_wake_up_flag(hdev, INTEL_BOOTING);
2636}
2637EXPORT_SYMBOL_GPL(btintel_bootup);
2638
2639void btintel_secure_send_result(struct hci_dev *hdev,
2640 const void *ptr, unsigned int len)
2641{
2642 const struct intel_secure_send_result *evt = ptr;
2643
2644 if (len != sizeof(*evt))
2645 return;
2646
2647 if (evt->result)
2648 btintel_set_flag(hdev, INTEL_FIRMWARE_FAILED);
2649
2650 if (btintel_test_and_clear_flag(hdev, INTEL_DOWNLOADING) &&
2651 btintel_test_flag(hdev, INTEL_FIRMWARE_LOADED))
2652 btintel_wake_up_flag(hdev, INTEL_DOWNLOADING);
2653}
2654EXPORT_SYMBOL_GPL(btintel_secure_send_result);
2655
2656MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2657MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
2658MODULE_VERSION(VERSION);
2659MODULE_LICENSE("GPL");
2660MODULE_FIRMWARE("intel/ibt-11-5.sfi");
2661MODULE_FIRMWARE("intel/ibt-11-5.ddc");
2662MODULE_FIRMWARE("intel/ibt-12-16.sfi");
2663MODULE_FIRMWARE("intel/ibt-12-16.ddc");