path: root/drivers/bluetooth/btrtl.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Bluetooth support for Realtek devices
 *
 *  Copyright (C) 2015 Endless Mobile, Inc.
 */

#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/unaligned.h>
#include <linux/usb.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btrtl.h"

#define VERSION "0.1"

#define RTL_CHIP_8723CS_CG	3
#define RTL_CHIP_8723CS_VF	4
#define RTL_CHIP_8723CS_XX	5
#define RTL_EPATCH_SIGNATURE	"Realtech"
#define RTL_EPATCH_SIGNATURE_V2	"RTBTCore"
#define RTL_ROM_LMP_8703B	0x8703
#define RTL_ROM_LMP_8723A	0x1200
#define RTL_ROM_LMP_8723B	0x8723
#define RTL_ROM_LMP_8821A	0x8821
#define RTL_ROM_LMP_8761A	0x8761
#define RTL_ROM_LMP_8822B	0x8822
#define RTL_ROM_LMP_8852A	0x8852
#define RTL_ROM_LMP_8851B	0x8851
#define RTL_ROM_LMP_8922A	0x8922
#define RTL_CONFIG_MAGIC	0x8723ab55

#define RTL_VSC_OP_COREDUMP	0xfcff

#define IC_MATCH_FL_LMPSUBV	(1 << 0)
#define IC_MATCH_FL_HCIREV	(1 << 1)
#define IC_MATCH_FL_HCIVER	(1 << 2)
#define IC_MATCH_FL_HCIBUS	(1 << 3)
#define IC_MATCH_FL_CHIP_TYPE	(1 << 4)
#define IC_INFO(lmps, hcir, hciv, bus) \
	.match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \
		       IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \
	.lmp_subver = (lmps), \
	.hci_rev = (hcir), \
	.hci_ver = (hciv), \
	.hci_bus = (bus)

#define	RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}})
#define	RTL_CHIP_REV    (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}})
#define	RTL_SEC_PROJ    (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0x0D, 0x00, 0xb0}})

#define RTL_PATCH_SNIPPETS		0x01
#define RTL_PATCH_DUMMY_HEADER		0x02
#define RTL_PATCH_SECURITY_HEADER	0x03

enum btrtl_chip_id {
	CHIP_ID_8723A,
	CHIP_ID_8723B,
	CHIP_ID_8821A,
	CHIP_ID_8761A,
	CHIP_ID_8822B = 8,
	CHIP_ID_8723D,
	CHIP_ID_8821C,
	CHIP_ID_8822C = 13,
	CHIP_ID_8761B,
	CHIP_ID_8852A = 18,
	CHIP_ID_8852B = 20,
	CHIP_ID_8852C = 25,
	CHIP_ID_8851B = 36,
	CHIP_ID_8922A = 44,
	CHIP_ID_8852BT = 47,
};

struct id_table {
	__u16 match_flags;
	__u16 lmp_subver;
	__u16 hci_rev;
	__u8 hci_ver;
	__u8 hci_bus;
	__u8 chip_type;
	bool config_needed;
	bool has_rom_version;
	bool has_msft_ext;
	char *fw_name;
	char *cfg_name;
	char *hw_info;
};

struct btrtl_device_info {
	const struct id_table *ic_info;
	u8 rom_version;
	u8 *fw_data;
	int fw_len;
	u8 *cfg_data;
	int cfg_len;
	bool drop_fw;
	int project_id;
	u8 key_id;
	struct list_head patch_subsecs;
};

static const struct id_table ic_id_table[] = {
	/* 8723A */
	{ IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = false,
	  .fw_name = "rtl_bt/rtl8723a_fw",
	  .cfg_name = NULL,
	  .hw_info = "rtl8723au" },

	/* 8723BS */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723bs_fw",
	  .cfg_name = "rtl_bt/rtl8723bs_config",
	  .hw_info  = "rtl8723bs" },

	/* 8723B */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723b_fw",
	  .cfg_name = "rtl_bt/rtl8723b_config",
	  .hw_info  = "rtl8723bu" },

	/* 8723CS-CG */
	{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
			 IC_MATCH_FL_HCIBUS,
	  .lmp_subver = RTL_ROM_LMP_8703B,
	  .chip_type = RTL_CHIP_8723CS_CG,
	  .hci_bus = HCI_UART,
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723cs_cg_fw",
	  .cfg_name = "rtl_bt/rtl8723cs_cg_config",
	  .hw_info  = "rtl8723cs-cg" },

	/* 8723CS-VF */
	{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
			 IC_MATCH_FL_HCIBUS,
	  .lmp_subver = RTL_ROM_LMP_8703B,
	  .chip_type = RTL_CHIP_8723CS_VF,
	  .hci_bus = HCI_UART,
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723cs_vf_fw",
	  .cfg_name = "rtl_bt/rtl8723cs_vf_config",
	  .hw_info  = "rtl8723cs-vf" },

	/* 8723CS-XX */
	{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
			 IC_MATCH_FL_HCIBUS,
	  .lmp_subver = RTL_ROM_LMP_8703B,
	  .chip_type = RTL_CHIP_8723CS_XX,
	  .hci_bus = HCI_UART,
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723cs_xx_fw",
	  .cfg_name = "rtl_bt/rtl8723cs_xx_config",
	  .hw_info  = "rtl8723cs" },

	/* 8723D */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723d_fw",
	  .cfg_name = "rtl_bt/rtl8723d_config",
	  .hw_info  = "rtl8723du" },

	/* 8723DS */
	{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8723ds_fw",
	  .cfg_name = "rtl_bt/rtl8723ds_config",
	  .hw_info  = "rtl8723ds" },

	/* 8821A */
	{ IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8821a_fw",
	  .cfg_name = "rtl_bt/rtl8821a_config",
	  .hw_info  = "rtl8821au" },

	/* 8821C */
	{ IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8821c_fw",
	  .cfg_name = "rtl_bt/rtl8821c_config",
	  .hw_info  = "rtl8821cu" },

	/* 8821CS */
	{ IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8821cs_fw",
	  .cfg_name = "rtl_bt/rtl8821cs_config",
	  .hw_info  = "rtl8821cs" },

	/* 8761A */
	{ IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8761a_fw",
	  .cfg_name = "rtl_bt/rtl8761a_config",
	  .hw_info  = "rtl8761au" },

	/* 8761B */
	{ IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_UART),
	  .config_needed = false,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8761b_fw",
	  .cfg_name = "rtl_bt/rtl8761b_config",
	  .hw_info  = "rtl8761btv" },

	/* 8761BU */
	{ IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .fw_name  = "rtl_bt/rtl8761bu_fw",
	  .cfg_name = "rtl_bt/rtl8761bu_config",
	  .hw_info  = "rtl8761bu" },

	/* 8822C with UART interface */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8822cs_fw",
	  .cfg_name = "rtl_bt/rtl8822cs_config",
	  .hw_info  = "rtl8822cs" },

	/* 8822C with UART interface */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART),
	  .config_needed = true,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8822cs_fw",
	  .cfg_name = "rtl_bt/rtl8822cs_config",
	  .hw_info  = "rtl8822cs" },

	/* 8822C with USB interface */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB),
	  .config_needed = false,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8822cu_fw",
	  .cfg_name = "rtl_bt/rtl8822cu_config",
	  .hw_info  = "rtl8822cu" },

	/* 8822B */
	{ IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB),
	  .config_needed = true,
	  .has_rom_version = true,
	  .has_msft_ext = true,
	  .fw_name  = "rtl_bt/rtl8822b_fw",
	  .cfg_name = "rtl_bt/rtl8822b_config",
	  .hw_info  = "rtl8