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2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771 
 kernel/drivers/bluetooth/btbcm.c
....@@ -1,26 +1,14 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *
34  *  Bluetooth support for Broadcom devices
45  *
56  *  Copyright (C) 2015  Intel Corporation
6
- *
7
- *
8
- *  This program is free software; you can redistribute it and/or modify
9
- *  it under the terms of the GNU General Public License as published by
10
- *  the Free Software Foundation; either version 2 of the License, or
11
- *  (at your option) any later version.
12
- *
13
- *  This program is distributed in the hope that it will be useful,
14
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
- *  GNU General Public License for more details.
17
- *
18
- *  You should have received a copy of the GNU General Public License
19
- *  along with this program; if not, write to the Free Software
20
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21
- *
227  */
238 
9
+#ifndef __GENKSYMS__	// ANDROID CRC kabi preservation hack due to commit 76dd7893bd10
10
+#include <linux/efi.h>
11
+#endif
2412 #include <linux/module.h>
2513 #include <linux/firmware.h>
2614 #include <asm/unaligned.h>
....@@ -33,8 +21,56 @@
3321 #define VERSION "0.1"
3422 
3523 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
24
+#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
25
+#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
26
+#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
3627 #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
3728 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
29
+#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
30
+#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
31
+#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
32
+
33
+#define BCM_FW_NAME_LEN			64
34
+#define BCM_FW_NAME_COUNT_MAX		2
35
+/* For kmalloc-ing the fw-name array instead of putting it on the stack */
36
+typedef char bcm_fw_name[BCM_FW_NAME_LEN];
37
+
38
+#ifdef CONFIG_EFI
39
+static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
40
+{
41
+	efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f,
42
+				   0x43, 0x26, 0x81, 0x23, 0xd1, 0x13);
43
+	bdaddr_t efi_bdaddr, bdaddr;
44
+	efi_status_t status;
45
+	unsigned long len;
46
+	int ret;
47
+
48
+	if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
49
+		return -EOPNOTSUPP;
50
+
51
+	len = sizeof(efi_bdaddr);
52
+	status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr);
53
+	if (status != EFI_SUCCESS)
54
+		return -ENXIO;
55
+
56
+	if (len != sizeof(efi_bdaddr))
57
+		return -EIO;
58
+
59
+	baswap(&bdaddr, &efi_bdaddr);
60
+
61
+	ret = btbcm_set_bdaddr(hdev, &bdaddr);
62
+	if (ret)
63
+		return ret;
64
+
65
+	bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr);
66
+	return 0;
67
+}
68
+#else
69
+static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
70
+{
71
+	return -EOPNOTSUPP;
72
+}
73
+#endif
3874 
3975 int btbcm_check_bdaddr(struct hci_dev *hdev)
4076 {
....@@ -45,6 +81,7 @@
4581 			     HCI_INIT_TIMEOUT);
4682 	if (IS_ERR(skb)) {
4783 		int err = PTR_ERR(skb);
84
+
4885 		bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
4986 		return err;
5087 	}
....@@ -64,18 +101,36 @@
64101 	 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
65102 	 * with no configured address.
66103 	 *
104
+	 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
105
+	 * with no configured address.
106
+	 *
107
+	 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
108
+	 * with no configured address.
109
+	 *
67110 	 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
68111 	 * with waiting for configuration state.
69112 	 *
70113 	 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
71114 	 * with waiting for configuration state.
115
+	 *
116
+	 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
117
+	 * with no configured address.
72118 	 */
73119 	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
120
+	    !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
121
+	    !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
74122 	    !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
75
-	    !bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
76
-		bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
77
-			    &bda->bdaddr);
78
-		set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
123
+	    !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
124
+	    !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
125
+	    !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
126
+	    !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
127
+	    !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
128
+		/* Try falling back to BDADDR EFI variable */
129
+		if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
130
+			bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
131
+				    &bda->bdaddr);
132
+			set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
133
+		}
79134 	}
80135 
81136 	kfree_skb(skb);
....@@ -100,6 +155,52 @@
100155 	return 0;
101156 }
102157 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
158
+
159
+int btbcm_read_pcm_int_params(struct hci_dev *hdev,
160
+			      struct bcm_set_pcm_int_params *params)
161
+{
162
+	struct sk_buff *skb;
163
+	int err = 0;
164
+
165
+	skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
166
+	if (IS_ERR(skb)) {
167
+		err = PTR_ERR(skb);
168
+		bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
169
+		return err;
170
+	}
171
+
172
+	if (skb->len != 6 || skb->data[0]) {
173
+		bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
174
+		kfree_skb(skb);
175
+		return -EIO;
176
+	}
177
+
178
+	if (params)
179
+		memcpy(params, skb->data + 1, 5);
180
+
181
+	kfree_skb(skb);
182
+
183
+	return 0;
184
+}
185
+EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
186
+
187
+int btbcm_write_pcm_int_params(struct hci_dev *hdev,
188
+			       const struct bcm_set_pcm_int_params *params)
189
+{
190
+	struct sk_buff *skb;
191
+	int err;
192
+
193
+	skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
194
+	if (IS_ERR(skb)) {
195
+		err = PTR_ERR(skb);
196
+		bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
197
+		return err;
198
+	}
199
+	kfree_skb(skb);
200
+
201
+	return 0;
202
+}
203
+EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
103204 
104205 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
105206 {
....@@ -171,6 +272,7 @@
171272 	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
172273 	if (IS_ERR(skb)) {
173274 		int err = PTR_ERR(skb);
275
+
174276 		bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
175277 		return err;
176278 	}
....@@ -304,6 +406,13 @@
304406 	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
305407 	kfree_skb(skb);
306408 
409
+	return 0;
410
+}
411
+
412
+static int btbcm_print_local_name(struct hci_dev *hdev)
413
+{
414
+	struct sk_buff *skb;
415
+
307416 	/* Read Local Name */
308417 	skb = btbcm_read_local_name(hdev);
309418 	if (IS_ERR(skb))
....@@ -322,7 +431,9 @@
322431 
323432 static const struct bcm_subver_table bcm_uart_subver_table[] = {
324433 	{ 0x4103, "BCM4330B1"	},	/* 002.001.003 */
434
+	{ 0x410d, "BCM4334B0"	},	/* 002.001.013 */
325435 	{ 0x410e, "BCM43341B0"	},	/* 002.001.014 */
436
+	{ 0x4204, "BCM2076B1"	},	/* 002.002.004 */
326437 	{ 0x4406, "BCM4324B3"	},	/* 002.004.006 */
327438 	{ 0x4606, "BCM4324B5"	},	/* 002.006.006 */
328439 	{ 0x6109, "BCM4335C0"	},	/* 003.001.009 */
....@@ -330,7 +441,14 @@
330441 	{ 0x2122, "BCM4343A0"	},	/* 001.001.034 */
331442 	{ 0x2209, "BCM43430A1"  },	/* 001.002.009 */
332443 	{ 0x6119, "BCM4345C0"	},	/* 003.001.025 */
444
+	{ 0x6606, "BCM4345C5"	},	/* 003.006.006 */
333445 	{ 0x230f, "BCM4356A2"	},	/* 001.003.015 */
446
+	{ 0x220e, "BCM20702A1"  },	/* 001.002.014 */
447
+	{ 0x420d, "BCM4349B1"	},	/* 002.002.013 */
448
+	{ 0x420e, "BCM4349B1"	},	/* 002.002.014 */
449
+	{ 0x4217, "BCM4329B1"   },	/* 002.002.023 */
450
+	{ 0x6106, "BCM4359C0"	},	/* 003.001.006 */
451
+	{ 0x4106, "BCM4335A0"	},	/* 002.001.006 */
334452 	{ }
335453 };
336454 
....@@ -341,22 +459,26 @@
341459 	{ 0x2118, "BCM20702A0"	},	/* 001.001.024 */
342460 	{ 0x2126, "BCM4335A0"	},	/* 001.001.038 */
343461 	{ 0x220e, "BCM20702A1"	},	/* 001.002.014 */
344
-	{ 0x230f, "BCM4354A2"	},	/* 001.003.015 */
462
+	{ 0x230f, "BCM4356A2"	},	/* 001.003.015 */
345463 	{ 0x4106, "BCM4335B0"	},	/* 002.001.006 */
346464 	{ 0x410e, "BCM20702B0"	},	/* 002.001.014 */
347465 	{ 0x6109, "BCM4335C0"	},	/* 003.001.009 */
348466 	{ 0x610c, "BCM4354"	},	/* 003.001.012 */
467
+	{ 0x6607, "BCM4350C5"	},	/* 003.006.007 */
349468 	{ }
350469 };
351470 
352
-int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len,
353
-		     bool reinit)
471
+int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done)
354472 {
355473 	u16 subver, rev, pid, vid;
356
-	const char *hw_name = "BCM";
357474 	struct sk_buff *skb;
358475 	struct hci_rp_read_local_version *ver;
359476 	const struct bcm_subver_table *bcm_subver_table;
477
+	const char *hw_name = NULL;
478
+	char postfix[16] = "";
479
+	int fw_name_count = 0;
480
+	bcm_fw_name *fw_name;
481
+	const struct firmware *fw;
360482 	int i, err;
361483 
362484 	/* Reset */
....@@ -375,15 +497,14 @@
375497 	kfree_skb(skb);
376498 
377499 	/* Read controller information */
378
-	if (!reinit) {
500
+	if (!(*fw_load_done)) {
379501 		err = btbcm_read_info(hdev);
380502 		if (err)
381503 			return err;
382504 	}
383
-
384
-	/* Upper nibble of rev should be between 0 and 3? */
385
-	if (((rev & 0xf000) >> 12) > 3)
386
-		return 0;
505
+	err = btbcm_print_local_name(hdev);
506
+	if (err)
507
+		return err;
387508 
388509 	bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
389510 						    bcm_uart_subver_table;
....@@ -395,6 +516,13 @@
395516 		}
396517 	}
397518 
519
+	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
520
+		    hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
521
+		    (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
522
+
523
+	if (*fw_load_done)
524
+		return 0;
525
+
398526 	if (hdev->bus == HCI_USB) {
399527 		/* Read USB Product Info */
400528 		skb = btbcm_read_usb_product(hdev);
....@@ -405,29 +533,60 @@
405533 		pid = get_unaligned_le16(skb->data + 3);
406534 		kfree_skb(skb);
407535 
408
-		snprintf(fw_name, len, "brcm/%s-%4.4x-%4.4x.hcd",
409
-			 hw_name, vid, pid);
410
-	} else {
411
-		snprintf(fw_name, len, "brcm/%s.hcd", hw_name);
536
+		snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
412537 	}
413538 
414
-	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
415
-		    hw_name, (subver & 0xe000) >> 13,
416
-		    (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
539
+	fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
540
+	if (!fw_name)
541
+		return -ENOMEM;
417542 
543
+	if (hw_name) {
544
+		snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
545
+			 "brcm/%s%s.hcd", hw_name, postfix);
546
+		fw_name_count++;
547
+	}
548
+
549
+	snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
550
+		 "brcm/BCM%s.hcd", postfix);
551
+	fw_name_count++;
552
+
553
+	for (i = 0; i < fw_name_count; i++) {
554
+		err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
555
+		if (err == 0) {
556
+			bt_dev_info(hdev, "%s '%s' Patch",
557
+				    hw_name ? hw_name : "BCM", fw_name[i]);
558
+			*fw_load_done = true;
559
+			break;
560
+		}
561
+	}
562
+
563
+	if (*fw_load_done) {
564
+		err = btbcm_patchram(hdev, fw);
565
+		if (err)
566
+			bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
567
+
568
+		release_firmware(fw);
569
+	} else {
570
+		bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
571
+		for (i = 0; i < fw_name_count; i++)
572
+			bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
573
+	}
574
+
575
+	kfree(fw_name);
418576 	return 0;
419577 }
420578 EXPORT_SYMBOL_GPL(btbcm_initialize);
421579 
422
-int btbcm_finalize(struct hci_dev *hdev)
580
+int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done)
423581 {
424
-	char fw_name[64];
425582 	int err;
426583 
427
-	/* Re-initialize */
428
-	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
429
-	if (err)
430
-		return err;
584
+	/* Re-initialize if necessary */
585
+	if (*fw_load_done) {
586
+		err = btbcm_initialize(hdev, fw_load_done);
587
+		if (err)
588
+			return err;
589
+	}
431590 
432591 	btbcm_check_bdaddr(hdev);
433592 
....@@ -439,45 +598,16 @@
439598 
440599 int btbcm_setup_patchram(struct hci_dev *hdev)
441600 {
442
-	char fw_name[64];
443
-	const struct firmware *fw;
444
-	struct sk_buff *skb;
601
+	bool fw_load_done = false;
445602 	int err;
446603 
447604 	/* Initialize */
448
-	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), false);
605
+	err = btbcm_initialize(hdev, &fw_load_done);
449606 	if (err)
450607 		return err;
451608 
452
-	err = request_firmware(&fw, fw_name, &hdev->dev);
453
-	if (err < 0) {
454
-		bt_dev_info(hdev, "BCM: Patch %s not found", fw_name);
455
-		goto done;
456
-	}
457
-
458
-	btbcm_patchram(hdev, fw);
459
-
460
-	release_firmware(fw);
461
-
462
-	/* Re-initialize */
463
-	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
464
-	if (err)
465
-		return err;
466
-
467
-	/* Read Local Name */
468
-	skb = btbcm_read_local_name(hdev);
469
-	if (IS_ERR(skb))
470
-		return PTR_ERR(skb);
471
-
472
-	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
473
-	kfree_skb(skb);
474
-
475
-done:
476
-	btbcm_check_bdaddr(hdev);
477
-
478
-	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
479
-
480
-	return 0;
609
+	/* Re-initialize after loading Patch */
610
+	return btbcm_finalize(hdev, &fw_load_done);
481611 }
482612 EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
483613