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905 lines
23 KiB
905 lines
23 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Bluetooth support for Realtek devices |
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* |
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* Copyright (C) 2015 Endless Mobile, Inc. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/firmware.h> |
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#include <asm/unaligned.h> |
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#include <linux/usb.h> |
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|
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#include <net/bluetooth/bluetooth.h> |
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#include <net/bluetooth/hci_core.h> |
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#include "btrtl.h" |
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|
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#define VERSION "0.1" |
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|
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#define RTL_EPATCH_SIGNATURE "Realtech" |
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#define RTL_ROM_LMP_8723A 0x1200 |
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#define RTL_ROM_LMP_8723B 0x8723 |
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#define RTL_ROM_LMP_8821A 0x8821 |
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#define RTL_ROM_LMP_8761A 0x8761 |
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#define RTL_ROM_LMP_8822B 0x8822 |
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#define RTL_ROM_LMP_8852A 0x8852 |
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#define RTL_CONFIG_MAGIC 0x8723ab55 |
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#define IC_MATCH_FL_LMPSUBV (1 << 0) |
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#define IC_MATCH_FL_HCIREV (1 << 1) |
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#define IC_MATCH_FL_HCIVER (1 << 2) |
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#define IC_MATCH_FL_HCIBUS (1 << 3) |
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#define IC_INFO(lmps, hcir, hciv, bus) \ |
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.match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \ |
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IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \ |
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.lmp_subver = (lmps), \ |
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.hci_rev = (hcir), \ |
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.hci_ver = (hciv), \ |
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.hci_bus = (bus) |
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|
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enum btrtl_chip_id { |
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CHIP_ID_8723A, |
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CHIP_ID_8723B, |
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CHIP_ID_8821A, |
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CHIP_ID_8761A, |
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CHIP_ID_8822B = 8, |
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CHIP_ID_8723D, |
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CHIP_ID_8821C, |
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CHIP_ID_8822C = 13, |
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CHIP_ID_8761B, |
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CHIP_ID_8852A = 18, |
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}; |
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struct id_table { |
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__u16 match_flags; |
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__u16 lmp_subver; |
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__u16 hci_rev; |
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__u8 hci_ver; |
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__u8 hci_bus; |
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bool config_needed; |
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bool has_rom_version; |
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char *fw_name; |
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char *cfg_name; |
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}; |
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struct btrtl_device_info { |
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const struct id_table *ic_info; |
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u8 rom_version; |
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u8 *fw_data; |
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int fw_len; |
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u8 *cfg_data; |
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int cfg_len; |
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bool drop_fw; |
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int project_id; |
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}; |
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|
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static const struct id_table ic_id_table[] = { |
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/* 8723A */ |
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{ IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = false, |
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.fw_name = "rtl_bt/rtl8723a_fw.bin", |
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.cfg_name = NULL }, |
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|
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/* 8723BS */ |
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{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART), |
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.config_needed = true, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8723bs_fw.bin", |
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.cfg_name = "rtl_bt/rtl8723bs_config" }, |
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|
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/* 8723B */ |
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{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8723b_fw.bin", |
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.cfg_name = "rtl_bt/rtl8723b_config" }, |
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|
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/* 8723D */ |
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{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB), |
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.config_needed = true, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8723d_fw.bin", |
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.cfg_name = "rtl_bt/rtl8723d_config" }, |
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|
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/* 8723DS */ |
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{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART), |
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.config_needed = true, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8723ds_fw.bin", |
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.cfg_name = "rtl_bt/rtl8723ds_config" }, |
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|
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/* 8821A */ |
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{ IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8821a_fw.bin", |
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.cfg_name = "rtl_bt/rtl8821a_config" }, |
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|
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/* 8821C */ |
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{ IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8821c_fw.bin", |
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.cfg_name = "rtl_bt/rtl8821c_config" }, |
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|
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/* 8761A */ |
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{ IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8761a_fw.bin", |
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.cfg_name = "rtl_bt/rtl8761a_config" }, |
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|
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/* 8761B */ |
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{ IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8761b_fw.bin", |
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.cfg_name = "rtl_bt/rtl8761b_config" }, |
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|
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/* 8822C with UART interface */ |
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{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART), |
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.config_needed = true, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8822cs_fw.bin", |
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.cfg_name = "rtl_bt/rtl8822cs_config" }, |
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|
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/* 8822C with USB interface */ |
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{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8822cu_fw.bin", |
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.cfg_name = "rtl_bt/rtl8822cu_config" }, |
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|
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/* 8822B */ |
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{ IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB), |
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.config_needed = true, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8822b_fw.bin", |
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.cfg_name = "rtl_bt/rtl8822b_config" }, |
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|
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/* 8852A */ |
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{ IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB), |
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.config_needed = false, |
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.has_rom_version = true, |
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.fw_name = "rtl_bt/rtl8852au_fw.bin", |
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.cfg_name = "rtl_bt/rtl8852au_config" }, |
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}; |
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|
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static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev, |
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u8 hci_ver, u8 hci_bus) |
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{ |
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int i; |
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|
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for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) { |
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) && |
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(ic_id_table[i].lmp_subver != lmp_subver)) |
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continue; |
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) && |
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(ic_id_table[i].hci_rev != hci_rev)) |
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continue; |
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) && |
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(ic_id_table[i].hci_ver != hci_ver)) |
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continue; |
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if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) && |
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(ic_id_table[i].hci_bus != hci_bus)) |
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continue; |
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break; |
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} |
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if (i >= ARRAY_SIZE(ic_id_table)) |
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return NULL; |
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|
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return &ic_id_table[i]; |
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} |
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static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev) |
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{ |
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struct sk_buff *skb; |
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|
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, |
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HCI_INIT_TIMEOUT); |
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if (IS_ERR(skb)) { |
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rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)", |
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PTR_ERR(skb)); |
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return skb; |
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} |
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if (skb->len != sizeof(struct hci_rp_read_local_version)) { |
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rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch"); |
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kfree_skb(skb); |
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return ERR_PTR(-EIO); |
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} |
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return skb; |
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} |
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static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version) |
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{ |
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struct rtl_rom_version_evt *rom_version; |
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struct sk_buff *skb; |
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|
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/* Read RTL ROM version command */ |
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skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); |
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if (IS_ERR(skb)) { |
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rtl_dev_err(hdev, "Read ROM version failed (%ld)", |
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PTR_ERR(skb)); |
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return PTR_ERR(skb); |
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} |
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if (skb->len != sizeof(*rom_version)) { |
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rtl_dev_err(hdev, "version event length mismatch"); |
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kfree_skb(skb); |
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return -EIO; |
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} |
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rom_version = (struct rtl_rom_version_evt *)skb->data; |
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rtl_dev_info(hdev, "rom_version status=%x version=%x", |
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rom_version->status, rom_version->version); |
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*version = rom_version->version; |
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kfree_skb(skb); |
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return 0; |
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} |
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static int rtlbt_parse_firmware(struct hci_dev *hdev, |
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struct btrtl_device_info *btrtl_dev, |
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unsigned char **_buf) |
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{ |
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static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 }; |
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struct rtl_epatch_header *epatch_info; |
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unsigned char *buf; |
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int i, len; |
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size_t min_size; |
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u8 opcode, length, data; |
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int project_id = -1; |
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const unsigned char *fwptr, *chip_id_base; |
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const unsigned char *patch_length_base, *patch_offset_base; |
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u32 patch_offset = 0; |
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u16 patch_length, num_patches; |
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static const struct { |
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__u16 lmp_subver; |
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__u8 id; |
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} project_id_to_lmp_subver[] = { |
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{ RTL_ROM_LMP_8723A, 0 }, |
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{ RTL_ROM_LMP_8723B, 1 }, |
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{ RTL_ROM_LMP_8821A, 2 }, |
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{ RTL_ROM_LMP_8761A, 3 }, |
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{ RTL_ROM_LMP_8822B, 8 }, |
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{ RTL_ROM_LMP_8723B, 9 }, /* 8723D */ |
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{ RTL_ROM_LMP_8821A, 10 }, /* 8821C */ |
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{ RTL_ROM_LMP_8822B, 13 }, /* 8822C */ |
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{ RTL_ROM_LMP_8761A, 14 }, /* 8761B */ |
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{ RTL_ROM_LMP_8852A, 18 }, /* 8852A */ |
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}; |
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min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3; |
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if (btrtl_dev->fw_len < min_size) |
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return -EINVAL; |
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fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig); |
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if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) { |
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rtl_dev_err(hdev, "extension section signature mismatch"); |
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return -EINVAL; |
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} |
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|
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/* Loop from the end of the firmware parsing instructions, until |
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* we find an instruction that identifies the "project ID" for the |
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* hardware supported by this firwmare file. |
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* Once we have that, we double-check that that project_id is suitable |
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* for the hardware we are working with. |
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*/ |
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while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) { |
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opcode = *--fwptr; |
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length = *--fwptr; |
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data = *--fwptr; |
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BT_DBG("check op=%x len=%x data=%x", opcode, length, data); |
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if (opcode == 0xff) /* EOF */ |
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break; |
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if (length == 0) { |
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rtl_dev_err(hdev, "found instruction with length 0"); |
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return -EINVAL; |
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} |
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if (opcode == 0 && length == 1) { |
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project_id = data; |
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break; |
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} |
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fwptr -= length; |
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} |
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|
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if (project_id < 0) { |
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rtl_dev_err(hdev, "failed to find version instruction"); |
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return -EINVAL; |
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} |
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|
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/* Find project_id in table */ |
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for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) { |
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if (project_id == project_id_to_lmp_subver[i].id) { |
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btrtl_dev->project_id = project_id; |
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break; |
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} |
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} |
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if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) { |
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rtl_dev_err(hdev, "unknown project id %d", project_id); |
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return -EINVAL; |
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} |
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|
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if (btrtl_dev->ic_info->lmp_subver != |
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project_id_to_lmp_subver[i].lmp_subver) { |
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rtl_dev_err(hdev, "firmware is for %x but this is a %x", |
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project_id_to_lmp_subver[i].lmp_subver, |
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btrtl_dev->ic_info->lmp_subver); |
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return -EINVAL; |
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} |
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|
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epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data; |
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if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) { |
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rtl_dev_err(hdev, "bad EPATCH signature"); |
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return -EINVAL; |
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} |
|
|
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num_patches = le16_to_cpu(epatch_info->num_patches); |
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BT_DBG("fw_version=%x, num_patches=%d", |
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le32_to_cpu(epatch_info->fw_version), num_patches); |
|
|
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/* After the rtl_epatch_header there is a funky patch metadata section. |
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* Assuming 2 patches, the layout is: |
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* ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2 |
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* |
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* Find the right patch for this chip. |
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*/ |
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min_size += 8 * num_patches; |
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if (btrtl_dev->fw_len < min_size) |
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return -EINVAL; |
|
|
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chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header); |
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patch_length_base = chip_id_base + (sizeof(u16) * num_patches); |
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patch_offset_base = patch_length_base + (sizeof(u16) * num_patches); |
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for (i = 0; i < num_patches; i++) { |
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u16 chip_id = get_unaligned_le16(chip_id_base + |
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(i * sizeof(u16))); |
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if (chip_id == btrtl_dev->rom_version + 1) { |
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patch_length = get_unaligned_le16(patch_length_base + |
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(i * sizeof(u16))); |
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patch_offset = get_unaligned_le32(patch_offset_base + |
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(i * sizeof(u32))); |
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break; |
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} |
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} |
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|
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if (!patch_offset) { |
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rtl_dev_err(hdev, "didn't find patch for chip id %d", |
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btrtl_dev->rom_version); |
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return -EINVAL; |
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} |
|
|
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BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i); |
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min_size = patch_offset + patch_length; |
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if (btrtl_dev->fw_len < min_size) |
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return -EINVAL; |
|
|
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/* Copy the firmware into a new buffer and write the version at |
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* the end. |
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*/ |
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len = patch_length; |
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buf = kvmalloc(patch_length, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
|
|
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memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4); |
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memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4); |
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|
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*_buf = buf; |
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return len; |
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} |
|
|
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static int rtl_download_firmware(struct hci_dev *hdev, |
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const unsigned char *data, int fw_len) |
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{ |
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struct rtl_download_cmd *dl_cmd; |
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int frag_num = fw_len / RTL_FRAG_LEN + 1; |
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int frag_len = RTL_FRAG_LEN; |
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int ret = 0; |
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int i; |
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struct sk_buff *skb; |
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struct hci_rp_read_local_version *rp; |
|
|
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dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL); |
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if (!dl_cmd) |
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return -ENOMEM; |
|
|
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for (i = 0; i < frag_num; i++) { |
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struct sk_buff *skb; |
|
|
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BT_DBG("download fw (%d/%d)", i, frag_num); |
|
|
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if (i > 0x7f) |
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dl_cmd->index = (i & 0x7f) + 1; |
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else |
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dl_cmd->index = i; |
|
|
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if (i == (frag_num - 1)) { |
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dl_cmd->index |= 0x80; /* data end */ |
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frag_len = fw_len % RTL_FRAG_LEN; |
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} |
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memcpy(dl_cmd->data, data, frag_len); |
|
|
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/* Send download command */ |
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skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd, |
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HCI_INIT_TIMEOUT); |
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if (IS_ERR(skb)) { |
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rtl_dev_err(hdev, "download fw command failed (%ld)", |
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PTR_ERR(skb)); |
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ret = PTR_ERR(skb); |
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goto out; |
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} |
|
|
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if (skb->len != sizeof(struct rtl_download_response)) { |
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rtl_dev_err(hdev, "download fw event length mismatch"); |
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kfree_skb(skb); |
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ret = -EIO; |
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goto out; |
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} |
|
|
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kfree_skb(skb); |
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data += RTL_FRAG_LEN; |
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} |
|
|
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skb = btrtl_read_local_version(hdev); |
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if (IS_ERR(skb)) { |
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ret = PTR_ERR(skb); |
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rtl_dev_err(hdev, "read local version failed"); |
|
goto out; |
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} |
|
|
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rp = (struct hci_rp_read_local_version *)skb->data; |
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rtl_dev_info(hdev, "fw version 0x%04x%04x", |
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__le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver)); |
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kfree_skb(skb); |
|
|
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out: |
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kfree(dl_cmd); |
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return ret; |
|
} |
|
|
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static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff) |
|
{ |
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const struct firmware *fw; |
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int ret; |
|
|
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rtl_dev_info(hdev, "loading %s", name); |
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ret = request_firmware(&fw, name, &hdev->dev); |
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if (ret < 0) |
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return ret; |
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ret = fw->size; |
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*buff = kvmalloc(fw->size, GFP_KERNEL); |
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if (*buff) |
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memcpy(*buff, fw->data, ret); |
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else |
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ret = -ENOMEM; |
|
|
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release_firmware(fw); |
|
|
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return ret; |
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} |
|
|
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static int btrtl_setup_rtl8723a(struct hci_dev *hdev, |
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struct btrtl_device_info *btrtl_dev) |
|
{ |
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if (btrtl_dev->fw_len < 8) |
|
return -EINVAL; |
|
|
|
/* Check that the firmware doesn't have the epatch signature |
|
* (which is only for RTL8723B and newer). |
|
*/ |
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if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) { |
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rtl_dev_err(hdev, "unexpected EPATCH signature!"); |
|
return -EINVAL; |
|
} |
|
|
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return rtl_download_firmware(hdev, btrtl_dev->fw_data, |
|
btrtl_dev->fw_len); |
|
} |
|
|
|
static int btrtl_setup_rtl8723b(struct hci_dev *hdev, |
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struct btrtl_device_info *btrtl_dev) |
|
{ |
|
unsigned char *fw_data = NULL; |
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int ret; |
|
u8 *tbuff; |
|
|
|
ret = rtlbt_parse_firmware(hdev, btrtl_dev, &fw_data); |
|
if (ret < 0) |
|
goto out; |
|
|
|
if (btrtl_dev->cfg_len > 0) { |
|
tbuff = kvzalloc(ret + btrtl_dev->cfg_len, GFP_KERNEL); |
|
if (!tbuff) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
memcpy(tbuff, fw_data, ret); |
|
kvfree(fw_data); |
|
|
|
memcpy(tbuff + ret, btrtl_dev->cfg_data, btrtl_dev->cfg_len); |
|
ret += btrtl_dev->cfg_len; |
|
|
|
fw_data = tbuff; |
|
} |
|
|
|
rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret); |
|
|
|
ret = rtl_download_firmware(hdev, fw_data, ret); |
|
|
|
out: |
|
kvfree(fw_data); |
|
return ret; |
|
} |
|
|
|
void btrtl_free(struct btrtl_device_info *btrtl_dev) |
|
{ |
|
kvfree(btrtl_dev->fw_data); |
|
kvfree(btrtl_dev->cfg_data); |
|
kfree(btrtl_dev); |
|
} |
|
EXPORT_SYMBOL_GPL(btrtl_free); |
|
|
|
struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, |
|
const char *postfix) |
|
{ |
|
struct btrtl_device_info *btrtl_dev; |
|
struct sk_buff *skb; |
|
struct hci_rp_read_local_version *resp; |
|
char cfg_name[40]; |
|
u16 hci_rev, lmp_subver; |
|
u8 hci_ver; |
|
int ret; |
|
u16 opcode; |
|
u8 cmd[2]; |
|
|
|
btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL); |
|
if (!btrtl_dev) { |
|
ret = -ENOMEM; |
|
goto err_alloc; |
|
} |
|
|
|
skb = btrtl_read_local_version(hdev); |
|
if (IS_ERR(skb)) { |
|
ret = PTR_ERR(skb); |
|
goto err_free; |
|
} |
|
|
|
resp = (struct hci_rp_read_local_version *)skb->data; |
|
rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x", |
|
resp->hci_ver, resp->hci_rev, |
|
resp->lmp_ver, resp->lmp_subver); |
|
|
|
hci_ver = resp->hci_ver; |
|
hci_rev = le16_to_cpu(resp->hci_rev); |
|
lmp_subver = le16_to_cpu(resp->lmp_subver); |
|
|
|
if (resp->hci_ver == 0x8 && le16_to_cpu(resp->hci_rev) == 0x826c && |
|
resp->lmp_ver == 0x8 && le16_to_cpu(resp->lmp_subver) == 0xa99e) |
|
btrtl_dev->drop_fw = true; |
|
|
|
if (btrtl_dev->drop_fw) { |
|
opcode = hci_opcode_pack(0x3f, 0x66); |
|
cmd[0] = opcode & 0xff; |
|
cmd[1] = opcode >> 8; |
|
|
|
skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); |
|
if (!skb) |
|
goto out_free; |
|
|
|
skb_put_data(skb, cmd, sizeof(cmd)); |
|
hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; |
|
|
|
hdev->send(hdev, skb); |
|
|
|
/* Ensure the above vendor command is sent to controller and |
|
* process has done. |
|
*/ |
|
msleep(200); |
|
|
|
/* Read the local version again. Expect to have the vanilla |
|
* version as cold boot. |
|
*/ |
|
skb = btrtl_read_local_version(hdev); |
|
if (IS_ERR(skb)) { |
|
ret = PTR_ERR(skb); |
|
goto err_free; |
|
} |
|
|
|
resp = (struct hci_rp_read_local_version *)skb->data; |
|
rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x", |
|
resp->hci_ver, resp->hci_rev, |
|
resp->lmp_ver, resp->lmp_subver); |
|
|
|
hci_ver = resp->hci_ver; |
|
hci_rev = le16_to_cpu(resp->hci_rev); |
|
lmp_subver = le16_to_cpu(resp->lmp_subver); |
|
} |
|
out_free: |
|
kfree_skb(skb); |
|
|
|
btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver, |
|
hdev->bus); |
|
|
|
if (!btrtl_dev->ic_info) { |
|
rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x", |
|
lmp_subver, hci_rev, hci_ver); |
|
return btrtl_dev; |
|
} |
|
|
|
if (btrtl_dev->ic_info->has_rom_version) { |
|
ret = rtl_read_rom_version(hdev, &btrtl_dev->rom_version); |
|
if (ret) |
|
goto err_free; |
|
} |
|
|
|
btrtl_dev->fw_len = rtl_load_file(hdev, btrtl_dev->ic_info->fw_name, |
|
&btrtl_dev->fw_data); |
|
if (btrtl_dev->fw_len < 0) { |
|
rtl_dev_err(hdev, "firmware file %s not found", |
|
btrtl_dev->ic_info->fw_name); |
|
ret = btrtl_dev->fw_len; |
|
goto err_free; |
|
} |
|
|
|
if (btrtl_dev->ic_info->cfg_name) { |
|
if (postfix) { |
|
snprintf(cfg_name, sizeof(cfg_name), "%s-%s.bin", |
|
btrtl_dev->ic_info->cfg_name, postfix); |
|
} else { |
|
snprintf(cfg_name, sizeof(cfg_name), "%s.bin", |
|
btrtl_dev->ic_info->cfg_name); |
|
} |
|
btrtl_dev->cfg_len = rtl_load_file(hdev, cfg_name, |
|
&btrtl_dev->cfg_data); |
|
if (btrtl_dev->ic_info->config_needed && |
|
btrtl_dev->cfg_len <= 0) { |
|
rtl_dev_err(hdev, "mandatory config file %s not found", |
|
btrtl_dev->ic_info->cfg_name); |
|
ret = btrtl_dev->cfg_len; |
|
goto err_free; |
|
} |
|
} |
|
|
|
/* RTL8822CE supports the Microsoft vendor extension and uses 0xFCF0 |
|
* for VsMsftOpCode. |
|
*/ |
|
if (lmp_subver == RTL_ROM_LMP_8822B) |
|
hci_set_msft_opcode(hdev, 0xFCF0); |
|
|
|
return btrtl_dev; |
|
|
|
err_free: |
|
btrtl_free(btrtl_dev); |
|
err_alloc: |
|
return ERR_PTR(ret); |
|
} |
|
EXPORT_SYMBOL_GPL(btrtl_initialize); |
|
|
|
int btrtl_download_firmware(struct hci_dev *hdev, |
|
struct btrtl_device_info *btrtl_dev) |
|
{ |
|
/* Match a set of subver values that correspond to stock firmware, |
|
* which is not compatible with standard btusb. |
|
* If matched, upload an alternative firmware that does conform to |
|
* standard btusb. Once that firmware is uploaded, the subver changes |
|
* to a different value. |
|
*/ |
|
if (!btrtl_dev->ic_info) { |
|
rtl_dev_info(hdev, "assuming no firmware upload needed"); |
|
return 0; |
|
} |
|
|
|
switch (btrtl_dev->ic_info->lmp_subver) { |
|
case RTL_ROM_LMP_8723A: |
|
return btrtl_setup_rtl8723a(hdev, btrtl_dev); |
|
case RTL_ROM_LMP_8723B: |
|
case RTL_ROM_LMP_8821A: |
|
case RTL_ROM_LMP_8761A: |
|
case RTL_ROM_LMP_8822B: |
|
case RTL_ROM_LMP_8852A: |
|
return btrtl_setup_rtl8723b(hdev, btrtl_dev); |
|
default: |
|
rtl_dev_info(hdev, "assuming no firmware upload needed"); |
|
return 0; |
|
} |
|
} |
|
EXPORT_SYMBOL_GPL(btrtl_download_firmware); |
|
|
|
int btrtl_setup_realtek(struct hci_dev *hdev) |
|
{ |
|
struct btrtl_device_info *btrtl_dev; |
|
int ret; |
|
|
|
btrtl_dev = btrtl_initialize(hdev, NULL); |
|
if (IS_ERR(btrtl_dev)) |
|
return PTR_ERR(btrtl_dev); |
|
|
|
ret = btrtl_download_firmware(hdev, btrtl_dev); |
|
|
|
/* Enable controller to do both LE scan and BR/EDR inquiry |
|
* simultaneously. |
|
*/ |
|
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); |
|
|
|
/* Enable central-peripheral role (able to create new connections with |
|
* an existing connection in slave role). |
|
*/ |
|
/* Enable WBS supported for the specific Realtek devices. */ |
|
switch (btrtl_dev->project_id) { |
|
case CHIP_ID_8822C: |
|
case CHIP_ID_8852A: |
|
set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); |
|
set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); |
|
break; |
|
default: |
|
rtl_dev_dbg(hdev, "Central-peripheral role not enabled."); |
|
rtl_dev_dbg(hdev, "WBS supported not enabled."); |
|
break; |
|
} |
|
|
|
btrtl_free(btrtl_dev); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(btrtl_setup_realtek); |
|
|
|
int btrtl_shutdown_realtek(struct hci_dev *hdev) |
|
{ |
|
struct sk_buff *skb; |
|
int ret; |
|
|
|
/* According to the vendor driver, BT must be reset on close to avoid |
|
* firmware crash. |
|
*/ |
|
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); |
|
if (IS_ERR(skb)) { |
|
ret = PTR_ERR(skb); |
|
bt_dev_err(hdev, "HCI reset during shutdown failed"); |
|
return ret; |
|
} |
|
kfree_skb(skb); |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(btrtl_shutdown_realtek); |
|
|
|
static unsigned int btrtl_convert_baudrate(u32 device_baudrate) |
|
{ |
|
switch (device_baudrate) { |
|
case 0x0252a00a: |
|
return 230400; |
|
|
|
case 0x05f75004: |
|
return 921600; |
|
|
|
case 0x00005004: |
|
return 1000000; |
|
|
|
case 0x04928002: |
|
case 0x01128002: |
|
return 1500000; |
|
|
|
case 0x00005002: |
|
return 2000000; |
|
|
|
case 0x0000b001: |
|
return 2500000; |
|
|
|
case 0x04928001: |
|
return 3000000; |
|
|
|
case 0x052a6001: |
|
return 3500000; |
|
|
|
case 0x00005001: |
|
return 4000000; |
|
|
|
case 0x0252c014: |
|
default: |
|
return 115200; |
|
} |
|
} |
|
|
|
int btrtl_get_uart_settings(struct hci_dev *hdev, |
|
struct btrtl_device_info *btrtl_dev, |
|
unsigned int *controller_baudrate, |
|
u32 *device_baudrate, bool *flow_control) |
|
{ |
|
struct rtl_vendor_config *config; |
|
struct rtl_vendor_config_entry *entry; |
|
int i, total_data_len; |
|
bool found = false; |
|
|
|
total_data_len = btrtl_dev->cfg_len - sizeof(*config); |
|
if (total_data_len <= 0) { |
|
rtl_dev_warn(hdev, "no config loaded"); |
|
return -EINVAL; |
|
} |
|
|
|
config = (struct rtl_vendor_config *)btrtl_dev->cfg_data; |
|
if (le32_to_cpu(config->signature) != RTL_CONFIG_MAGIC) { |
|
rtl_dev_err(hdev, "invalid config magic"); |
|
return -EINVAL; |
|
} |
|
|
|
if (total_data_len < le16_to_cpu(config->total_len)) { |
|
rtl_dev_err(hdev, "config is too short"); |
|
return -EINVAL; |
|
} |
|
|
|
for (i = 0; i < total_data_len; ) { |
|
entry = ((void *)config->entry) + i; |
|
|
|
switch (le16_to_cpu(entry->offset)) { |
|
case 0xc: |
|
if (entry->len < sizeof(*device_baudrate)) { |
|
rtl_dev_err(hdev, "invalid UART config entry"); |
|
return -EINVAL; |
|
} |
|
|
|
*device_baudrate = get_unaligned_le32(entry->data); |
|
*controller_baudrate = btrtl_convert_baudrate( |
|
*device_baudrate); |
|
|
|
if (entry->len >= 13) |
|
*flow_control = !!(entry->data[12] & BIT(2)); |
|
else |
|
*flow_control = false; |
|
|
|
found = true; |
|
break; |
|
|
|
default: |
|
rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)", |
|
le16_to_cpu(entry->offset), entry->len); |
|
break; |
|
} |
|
|
|
i += sizeof(*entry) + entry->len; |
|
} |
|
|
|
if (!found) { |
|
rtl_dev_err(hdev, "no UART config entry found"); |
|
return -ENOENT; |
|
} |
|
|
|
rtl_dev_dbg(hdev, "device baudrate = 0x%08x", *device_baudrate); |
|
rtl_dev_dbg(hdev, "controller baudrate = %u", *controller_baudrate); |
|
rtl_dev_dbg(hdev, "flow control %d", *flow_control); |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(btrtl_get_uart_settings); |
|
|
|
MODULE_AUTHOR("Daniel Drake <[email protected]>"); |
|
MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION); |
|
MODULE_VERSION(VERSION); |
|
MODULE_LICENSE("GPL"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723a_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723b_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723b_config.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723bs_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723bs_config.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723ds_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8723ds_config.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8761a_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8761a_config.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin"); |
|
MODULE_FIRMWARE("rtl_bt/rtl8852au_config.bin");
|
|
|