| // 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 <asm/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_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, |
| }; |
| |
| 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 = "rtl8822bu" }, |
| |
| /* 8852A */ |
| { IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB), |
| .config_needed = false, |
| .has_rom_version = true, |
| .has_msft_ext = true, |
| .fw_name = "rtl_bt/rtl8852au_fw", |
| .cfg_name = "rtl_bt/rtl8852au_config", |
| .hw_info = "rtl8852au" }, |
| |
| /* 8852B with UART interface */ |
| { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_UART), |
| .config_needed = true, |
| .has_rom_version = true, |
| .has_msft_ext = true, |
| .fw_name = "rtl_bt/rtl8852bs_fw", |
| .cfg_name = "rtl_bt/rtl8852bs_config", |
| .hw_info = "rtl8852bs" }, |
| |
| /* 8852B */ |
| { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_USB), |
| .config_needed = false, |
| .has_rom_version = true, |
| .has_msft_ext = true, |
| .fw_name = "rtl_bt/rtl8852bu_fw", |
| .cfg_name = "rtl_bt/rtl8852bu_config", |
| .hw_info = "rtl8852bu" }, |
| |
| /* 8852C */ |
| { IC_INFO(RTL_ROM_LMP_8852A, 0xc, 0xc, HCI_USB), |
| .config_needed = false, |
| .has_rom_version = true, |
| .has_msft_ext = true, |
| .fw_name = "rtl_bt/rtl8852cu_fw", |
| .cfg_name = "rtl_bt/rtl8852cu_config", |
| .hw_info = "rtl8852cu" }, |
| |
| /* 8851B */ |
| { IC_INFO(RTL_ROM_LMP_8851B, 0xb, 0xc, HCI_USB), |
| .config_needed = false, |
| .has_rom_version = true, |
| .has_msft_ext = false, |
| .fw_name = "rtl_bt/rtl8851bu_fw", |
| .cfg_name = "rtl_bt/rtl8851bu_config", |
| .hw_info = "rtl8851bu" }, |
| }; |
| |
| static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev, |
| u8 hci_ver, u8 hci_bus, |
| u8 chip_type) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) { |
| if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) && |
| (ic_id_table[i].lmp_subver != lmp_subver)) |
| continue; |
| if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) && |
| (ic_id_table[i].hci_rev != hci_rev)) |
| continue; |
| if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) && |
| (ic_id_table[i].hci_ver != hci_ver)) |
| continue; |
| if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) && |
| (ic_id_table[i].hci_bus != hci_bus)) |
| continue; |
| if ((ic_id_table[i].match_flags & IC_MATCH_FL_CHIP_TYPE) && |
| (ic_id_table[i].chip_type != chip_type)) |
| continue; |
| |
| break; |
| } |
| if (i >= ARRAY_SIZE(ic_id_table)) |
| return NULL; |
| |
| return &ic_id_table[i]; |
| } |
| |
| static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev) |
| { |
| struct sk_buff *skb; |
| |
| skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, |
| HCI_INIT_TIMEOUT); |
| if (IS_ERR(skb)) { |
| rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)", |
| PTR_ERR(skb)); |
| return skb; |
| } |
| |
| if (skb->len != sizeof(struct hci_rp_read_local_version)) { |
| rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch"); |
| kfree_skb(skb); |
| return ERR_PTR(-EIO); |
| } |
| |
| return skb; |
| } |
| |
| static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version) |
| { |
| struct rtl_rom_version_evt *rom_version; |
| struct sk_buff *skb; |
| |
| /* Read RTL ROM version command */ |
| skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); |
| if (IS_ERR(skb)) { |
| rtl_dev_err(hdev, "Read ROM version failed (%ld)", |
| PTR_ERR(skb)); |
| return PTR_ERR(skb); |
| } |
| |
| if (skb->len != sizeof(*rom_version)) { |
| rtl_dev_err(hdev, "version event length mismatch"); |
| kfree_skb(skb); |
| return -EIO; |
| } |
| |
| rom_version = (struct rtl_rom_version_evt *)skb->data; |
| rtl_dev_info(hdev, "rom_version status=%x version=%x", |
| rom_version->status, rom_version->version); |
| |
| *version = rom_version->version; |
| |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| static int btrtl_vendor_read_reg16(struct hci_dev *hdev, |
| struct rtl_vendor_cmd *cmd, u8 *rp) |
| { |
| struct sk_buff *skb; |
| int err = 0; |
| |
| skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd, |
| HCI_INIT_TIMEOUT); |
| if (IS_ERR(skb)) { |
| err = PTR_ERR(skb); |
| rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err); |
| return err; |
| } |
| |
| if (skb->len != 3 || skb->data[0]) { |
| bt_dev_err(hdev, "RTL: Read reg16 length mismatch"); |
| kfree_skb(skb); |
| return -EIO; |
| } |
| |
| if (rp) |
| memcpy(rp, skb->data + 1, 2); |
| |
| kfree_skb(skb); |
| |
| return 0; |
| } |
| |
| static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len) |
| { |
| void *data = iov->data; |
| |
| if (iov->len < len) |
| return NULL; |
| |
| iov->data += len; |
| iov->len -= len; |
| |
| return data; |
| } |
| |
| static void btrtl_insert_ordered_subsec(struct rtl_subsection *node, |
| struct btrtl_device_info *btrtl_dev) |
| { |
| struct list_head *pos; |
| struct list_head *next; |
| struct rtl_subsection *subsec; |
| |
| list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) { |
| subsec = list_entry(pos, struct rtl_subsection, list); |
| if (subsec->prio >= node->prio) |
| break; |
| } |
| __list_add(&node->list, pos->prev, pos); |
| } |
| |
| static int btrtl_parse_section(struct hci_dev *hdev, |
| struct btrtl_device_info *btrtl_dev, u32 opcode, |
| u8 *data, u32 len) |
| { |
| struct rtl_section_hdr *hdr; |
| struct rtl_subsection *subsec; |
| struct rtl_common_subsec *common_subsec; |
| struct rtl_sec_hdr *sec_hdr; |
| int i; |
| u8 *ptr; |
| u16 num_subsecs; |
| u32 subsec_len; |
| int rc = 0; |
| struct rtl_iovec iov = { |
| .data = data, |
| .len = len, |
| }; |
| |
| hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); |
| if (!hdr) |
| return -EINVAL; |
| num_subsecs = le16_to_cpu(hdr->num); |
| |
| for (i = 0; i < num_subsecs; i++) { |
| common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec)); |
| if (!common_subsec) |
| break; |
| subsec_len = le32_to_cpu(common_subsec->len); |
| |
| rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x", |
| common_subsec->eco, subsec_len); |
| |
| ptr = rtl_iov_pull_data(&iov, subsec_len); |
| if (!ptr) |
| break; |
| |
| if (common_subsec->eco != btrtl_dev->rom_version + 1) |
| continue; |
| |
| switch (opcode) { |
| case RTL_PATCH_SECURITY_HEADER: |
| sec_hdr = (void *)common_subsec; |
| if (sec_hdr->key_id != btrtl_dev->key_id) |
| continue; |
| break; |
| } |
| |
| subsec = kzalloc(sizeof(*subsec), GFP_KERNEL); |
| if (!subsec) |
| return -ENOMEM; |
| subsec->opcode = opcode; |
| subsec->prio = common_subsec->prio; |
| subsec->len = subsec_len; |
| subsec->data = ptr; |
| btrtl_insert_ordered_subsec(subsec, btrtl_dev); |
| rc += subsec_len; |
| } |
| |
| return rc; |
| } |
| |
| static int rtlbt_parse_firmware_v2(struct hci_dev *hdev, |
| struct btrtl_device_info *btrtl_dev, |
| unsigned char **_buf) |
| { |
| struct rtl_epatch_header_v2 *hdr; |
| int rc; |
| u8 reg_val[2]; |
| u8 key_id; |
| u32 num_sections; |
| struct rtl_section *section; |
| struct rtl_subsection *entry, *tmp; |
| u32 section_len; |
| u32 opcode; |
| int len = 0; |
| int i; |
| u8 *ptr; |
| struct rtl_iovec iov = { |
| .data = btrtl_dev->fw_data, |
| .len = btrtl_dev->fw_len - 7, /* Cut the tail */ |
| }; |
| |
| rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val); |
| if (rc < 0) |
| return -EIO; |
| key_id = reg_val[0]; |
| |
| rtl_dev_dbg(hdev, "%s: key id %u", __func__, key_id); |
| |
| btrtl_dev->key_id = key_id; |
| |
| hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); |
| if (!hdr) |
| return -EINVAL; |
| num_sections = le32_to_cpu(hdr->num_sections); |
| |
| rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version), |
| *((u32 *)(hdr->fw_version + 4))); |
| |
| for (i = 0; i < num_sections; i++) { |
| section = rtl_iov_pull_data(&iov, sizeof(*section)); |
| if (!section) |
| break; |
| section_len = le32_to_cpu(section->len); |
| opcode = le32_to_cpu(section->opcode); |
| |
| rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode); |
| |
| ptr = rtl_iov_pull_data(&iov, section_len); |
| if (!ptr) |
| break; |
| |
| switch (opcode) { |
| case RTL_PATCH_SNIPPETS: |
| rc = btrtl_parse_section(hdev, btrtl_dev, opcode, |
| ptr, section_len); |
| break; |
| case RTL_PATCH_SECURITY_HEADER: |
| /* If key_id from chip is zero, ignore all security |
| * headers. |
| */ |
| if (!key_id) |
| break; |
| rc = btrtl_parse_section(hdev, btrtl_dev, opcode, |
| ptr, section_len); |
| break; |
| case RTL_PATCH_DUMMY_HEADER: |
| rc = btrtl_parse_section(hdev, btrtl_dev, opcode, |
| ptr, section_len); |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| if (rc < 0) { |
| rtl_dev_err(hdev, "RTL: Parse section (%u) err %d", |
| opcode, rc); |
| return rc; |
| } |
| len += rc; |
| } |
| |
| if (!len) |
| return -ENODATA; |
| |
| /* Allocate mem and copy all found subsecs. */ |
| ptr = kvmalloc(len, GFP_KERNEL); |
| if (!ptr) |
| return -ENOMEM; |
| |
| len = 0; |
| list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { |
| rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x", |
| entry->opcode, entry->data, entry->len); |
| memcpy(ptr + len, entry->data, entry->len); |
| len += entry->len; |
| } |
| |
| if (!len) |
| return -EPERM; |
| |
| *_buf = ptr; |
| return len; |
| } |
| |
| static int rtlbt_parse_firmware(struct hci_dev *hdev, |
| struct btrtl_device_info *btrtl_dev, |
| unsigned char **_buf) |
| { |
| static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 }; |
| struct btrealtek_data *coredump_info = hci_get_priv(hdev); |
| struct rtl_epatch_header *epatch_info; |
| unsigned char *buf; |
| int i, len; |
| size_t min_size; |
| u8 opcode, length, data; |
| int project_id = -1; |
| const unsigned char *fwptr, *chip_id_base; |
| const unsigned char *patch_length_base, *patch_offset_base; |
| u32 patch_offset = 0; |
| u16 patch_length, num_patches; |
| static const struct { |
| __u16 lmp_subver; |
| __u8 id; |
| } project_id_to_lmp_subver[] = { |
| { RTL_ROM_LMP_8723A, 0 }, |
| { RTL_ROM_LMP_8723B, 1 }, |
| { RTL_ROM_LMP_8821A, 2 }, |
| { RTL_ROM_LMP_8761A, 3 }, |
| { RTL_ROM_LMP_8703B, 7 }, |
| { RTL_ROM_LMP_8822B, 8 }, |
| { RTL_ROM_LMP_8723B, 9 }, /* 8723D */ |
| { RTL_ROM_LMP_8821A, 10 }, /* 8821C */ |
| { RTL_ROM_LMP_8822B, 13 }, /* 8822C */ |
| { RTL_ROM_LMP_8761A, 14 }, /* 8761B */ |
| { RTL_ROM_LMP_8852A, 18 }, /* 8852A */ |
| { RTL_ROM_LMP_8852A, 20 }, /* 8852B */ |
| { RTL_ROM_LMP_8852A, 25 }, /* 8852C */ |
| { RTL_ROM_LMP_8851B, 36 }, /* 8851B */ |
| }; |
| |
| if (btrtl_dev->fw_len <= 8) |
| return -EINVAL; |
| |
| if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) |
| min_size = sizeof(struct rtl_epatch_header) + |
| sizeof(extension_sig) + 3; |
| else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) |
| min_size = sizeof(struct rtl_epatch_header_v2) + |
| sizeof(extension_sig) + 3; |
| else |
| return -EINVAL; |
| |
| if (btrtl_dev->fw_len < min_size) |
| return -EINVAL; |
| |
| fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig); |
| if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) { |
| rtl_dev_err(hdev, "extension section signature mismatch"); |
| return -EINVAL; |
| } |
| |
| /* Loop from the end of the firmware parsing instructions, until |
| * we find an instruction that identifies the "project ID" for the |
| * hardware supported by this firwmare file. |
| * Once we have that, we double-check that project_id is suitable |
| * for the hardware we are working with. |
| */ |
| while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) { |
| opcode = *--fwptr; |
| length = *--fwptr; |
| data = *--fwptr; |
| |
| BT_DBG("check op=%x len=%x data=%x", opcode, length, data); |
| |
| if (opcode == 0xff) /* EOF */ |
| break; |
| |
| if (length == 0) { |
| rtl_dev_err(hdev, "found instruction with length 0"); |
| return -EINVAL; |
| } |
| |
| if (opcode == 0 && length == 1) { |
| project_id = data; |
| break; |
| } |
| |
| fwptr -= length; |
| } |
| |
| if (project_id < 0) { |
| rtl_dev_err(hdev, "failed to find version instruction"); |
| return -EINVAL; |
| } |
| |
| /* Find project_id in table */ |
| for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) { |
| if (project_id == project_id_to_lmp_subver[i].id) { |
| btrtl_dev->project_id = project_id; |
| break; |
| } |
| } |
| |
| if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) { |
| rtl_dev_err(hdev, "unknown project id %d", project_id); |
| return -EINVAL; |
| } |
| |
| if (btrtl_dev->ic_info->lmp_subver != |
| project_id_to_lmp_subver[i].lmp_subver) { |
| rtl_dev_err(hdev, "firmware is for %x but this is a %x", |
| project_id_to_lmp_subver[i].lmp_subver, |
| btrtl_dev->ic_info->lmp_subver); |
| return -EINVAL; |
| } |
| |
| if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) { |
| if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) |
| return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf); |
| rtl_dev_err(hdev, "bad EPATCH signature"); |
| return -EINVAL; |
| } |
| |
| epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data; |
| num_patches = le16_to_cpu(epatch_info->num_patches); |
| |
| BT_DBG("fw_version=%x, num_patches=%d", |
| le32_to_cpu(epatch_info->fw_version), num_patches); |
| coredump_info->rtl_dump.fw_version = le32_to_cpu(epatch_info->fw_version); |
| |
| /* After the rtl_epatch_header there is a funky patch metadata section. |
| * Assuming 2 patches, the layout is: |
| * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2 |
| * |
| * Find the right patch for this chip. |
| */ |
| min_size += 8 * num_patches; |
| if (btrtl_dev->fw_len < min_size) |
| return -EINVAL; |
| |
| chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header); |
| patch_length_base = chip_id_base + (sizeof(u16) * num_patches); |
| patch_offset_base = patch_length_base + (sizeof(u16) * num_patches); |
| for (i = 0; i < num_patches; i++) { |
| u16 chip_id = get_unaligned_le16(chip_id_base + |
| (i * sizeof(u16))); |
| if (chip_id == btrtl_dev->rom_version + 1) { |
| patch_length = get_unaligned_le16(patch_length_base + |
| (i * sizeof(u16))); |
| patch_offset = get_unaligned_le32(patch_offset_base + |
| (i * sizeof(u32))); |
| break; |
| } |
| } |
| |
| if (!patch_offset) { |
| rtl_dev_err(hdev, "didn't find patch for chip id %d", |
| btrtl_dev->rom_version); |
| return -EINVAL; |
| } |
| |
| BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i); |
| min_size = patch_offset + patch_length; |
| if (btrtl_dev->fw_len < min_size) |
| return -EINVAL; |
| |
| /* Copy the firmware into a new buffer and write the version at |
| * the end. |
| */ |
| len = patch_length; |
| buf = kvmalloc(patch_length, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4); |
| memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4); |
| |
| *_buf = buf; |
| return len; |
| } |
| |
| static int rtl_download_firmware(struct hci_dev *hdev, |
| const unsigned char *data, int fw_len) |
| { |
| struct rtl_download_cmd *dl_cmd; |
| int frag_num = fw_len / RTL_FRAG_LEN + 1; |
| int frag_len = RTL_FRAG_LEN; |
| int ret = 0; |
| int i; |
| int j = 0; |
| struct sk_buff *skb; |
| struct hci_rp_read_local_version *rp; |
| |
| dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL); |
| if (!dl_cmd) |
| return -ENOMEM; |
| |
| for (i = 0; i < frag_num; i++) { |
| struct sk_buff *skb; |
| |
| dl_cmd->index = j++; |
| if (dl_cmd->index == 0x7f) |
| j = 1; |
| |
| if (i == (frag_num - 1)) { |
| dl_cmd->index |= 0x80; /* data end */ |
| frag_len = fw_len % RTL_FRAG_LEN; |
| } |
| rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i, |
| frag_num, dl_cmd->index); |
| memcpy(dl_cmd->data, data, frag_len); |
| |
| /* Send download command */ |
| skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd, |
| HCI_INIT_TIMEOUT); |
| if (IS_ERR(skb)) { |
| rtl_dev_err(hdev, "download fw command failed (%ld)", |
| PTR_ERR(skb)); |
| ret = PTR_ERR(skb); |
| goto out; |
| } |
| |
| if (skb->len != sizeof(struct rtl_download_response)) { |
| rtl_dev_err(hdev, "download fw event length mismatch"); |
| kfree_skb(skb); |
| ret = -EIO; |
| goto out; |
| } |
| |
| kfree_skb(skb); |
| data += RTL_FRAG_LEN; |
| } |
| |
| skb = btrtl_read_local_version(hdev); |
| if (IS_ERR(skb)) { |
| ret = PTR_ERR(skb); |
| rtl_dev_err(hdev, "read local version failed"); |
| goto out; |
| } |
| |
| rp = (struct hci_rp_read_local_version *)skb->data; |
| rtl_dev_info(hdev, "fw version 0x%04x%04x", |
| __le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver)); |
| kfree_skb(skb); |
| |
| out: |
| kfree(dl_cmd); |
| return ret; |
| } |
| |
| static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff) |
| { |
| const struct firmware *fw; |
| int ret; |
| |
| rtl_dev_info(hdev, "loading %s", name); |
| ret = request_firmware(&fw, name, &hdev->dev); |
| if (ret < 0) |
| return ret; |
| ret = fw->size; |
| *buff = kvmalloc(fw->size, GFP_KERNEL); |
| if (*buff) |
| memcpy(*buff, fw->data, ret); |
| else |
| ret = -ENOMEM; |
| |
| release_firmware(fw); |
| |
| return ret; |
| } |
| |
| static int btrtl_setup_rtl8723a(struct hci_dev *hdev, |
| struct btrtl_device_info *btrtl_dev) |
| { |
| 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). |
| */ |
| if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) { |
| rtl_dev_err(hdev, "unexpected EPATCH signature!"); |
| return -EINVAL; |
| } |
| |
| return rtl_download_firmware(hdev, btrtl_dev->fw_data, |
| btrtl_dev->fw_len); |
| } |
| |
| static int btrtl_setup_rtl8723b(struct hci_dev *hdev, |
| struct btrtl_device_info *btrtl_dev) |
| { |
| unsigned char *fw_data = NULL; |
| 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; |
| } |
| |
| static void btrtl_coredump(struct hci_dev *hdev) |
| { |
| static const u8 param[] = { 0x00, 0x00 }; |
| |
| __hci_cmd_send(hdev, RTL_VSC_OP_COREDUMP, sizeof(param), param); |
| } |
| |
| static void btrtl_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb) |
| { |
| struct btrealtek_data *coredump_info = hci_get_priv(hdev); |
| char buf[80]; |
| |
| if (coredump_info->rtl_dump.controller) |
| snprintf(buf, sizeof(buf), "Controller Name: %s\n", |
| coredump_info->rtl_dump.controller); |
| else |
| snprintf(buf, sizeof(buf), "Controller Name: Unknown\n"); |
| skb_put_data(skb, buf, strlen(buf)); |
| |
| snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n", |
| coredump_info->rtl_dump.fw_version); |
| skb_put_data(skb, buf, strlen(buf)); |
| |
| snprintf(buf, sizeof(buf), "Driver: %s\n", coredump_info->rtl_dump.driver_name); |
| skb_put_data(skb, buf, strlen(buf)); |
| |
| snprintf(buf, sizeof(buf), "Vendor: Realtek\n"); |
| skb_put_data(skb, buf, strlen(buf)); |
| } |
| |
| static int btrtl_register_devcoredump_support(struct hci_dev *hdev) |
| { |
| int err; |
| |
| err = hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL); |
| |
| return err; |
| } |
| |
| void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name) |
| { |
| struct btrealtek_data *coredump_info = hci_get_priv(hdev); |
| |
| coredump_info->rtl_dump.driver_name = driver_name; |
| } |
| EXPORT_SYMBOL_GPL(btrtl_set_driver_name); |
| |
| static bool rtl_has_chip_type(u16 lmp_subver) |
| { |
| switch (lmp_subver) { |
| case RTL_ROM_LMP_8703B: |
| return true; |
| default: |
| break; |
| } |
| |
| return false; |
| } |
| |
| static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type) |
| { |
| struct rtl_chip_type_evt *chip_type; |
| struct sk_buff *skb; |
| const unsigned char cmd_buf[] = {0x00, 0x94, 0xa0, 0x00, 0xb0}; |
| |
| /* Read RTL chip type command */ |
| skb = __hci_cmd_sync(hdev, 0xfc61, 5, cmd_buf, HCI_INIT_TIMEOUT); |
| if (IS_ERR(skb)) { |
| rtl_dev_err(hdev, "Read chip type failed (%ld)", |
| PTR_ERR(skb)); |
| return PTR_ERR(skb); |
| } |
| |
| chip_type = skb_pull_data(skb, sizeof(*chip_type)); |
| if (!chip_type) { |
| rtl_dev_err(hdev, "RTL chip type event length mismatch"); |
| kfree_skb(skb); |
| return -EIO; |
| } |
| |
| rtl_dev_info(hdev, "chip_type status=%x type=%x", |
| chip_type->status, chip_type->type); |
| |
| *type = chip_type->type & 0x0f; |
| |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| void btrtl_free(struct btrtl_device_info *btrtl_dev) |
| { |
| struct rtl_subsection *entry, *tmp; |
| |
| kvfree(btrtl_dev->fw_data); |
| kvfree(btrtl_dev->cfg_data); |
| |
| list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { |
| list_del(&entry->list); |
| kfree(entry); |
| } |
| |
| kfree(btrtl_dev); |
| } |
| EXPORT_SYMBOL_GPL(btrtl_free); |
| |
| struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, |
| const char *postfix) |
| { |
| struct btrealtek_data *coredump_info = hci_get_priv(hdev); |
| struct btrtl_device_info *btrtl_dev; |
| struct sk_buff *skb; |
| struct hci_rp_read_local_version *resp; |
| struct hci_command_hdr *cmd; |
| char fw_name[40]; |
| char cfg_name[40]; |
| u16 hci_rev, lmp_subver; |
| u8 hci_ver, lmp_ver, chip_type = 0; |
| int ret; |
| u8 reg_val[2]; |
| |
| btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL); |
| if (!btrtl_dev) { |
| ret = -ENOMEM; |
| goto err_alloc; |
| } |
| |
| INIT_LIST_HEAD(&btrtl_dev->patch_subsecs); |
| |
| check_version: |
| ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_SUBVER, reg_val); |
| if (ret < 0) |
| goto err_free; |
| lmp_subver = get_unaligned_le16(reg_val); |
| |
| if (lmp_subver == RTL_ROM_LMP_8822B) { |
| ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_REV, reg_val); |
| if (ret < 0) |
| goto err_free; |
| hci_rev = get_unaligned_le16(reg_val); |
| |
| /* 8822E */ |
| if (hci_rev == 0x000e) { |
| hci_ver = 0x0c; |
| lmp_ver = 0x0c; |
| btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, |
| hci_ver, hdev->bus, |
| chip_type); |
| goto next; |
| } |
| } |
| |
| 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; |
| |
| hci_ver = resp->hci_ver; |
| hci_rev = le16_to_cpu(resp->hci_rev); |
| lmp_ver = resp->lmp_ver; |
| lmp_subver = le16_to_cpu(resp->lmp_subver); |
| |
| kfree_skb(skb); |
| |
| if (rtl_has_chip_type(lmp_subver)) { |
| ret = rtl_read_chip_type(hdev, &chip_type); |
| if (ret) |
| goto err_free; |
| } |
| |
| btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver, |
| hdev->bus, chip_type); |
| |
| next: |
| rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x", |
| hci_ver, hci_rev, |
| lmp_ver, lmp_subver); |
| |
| if (!btrtl_dev->ic_info && !btrtl_dev->drop_fw) |
| btrtl_dev->drop_fw = true; |
| else |
| btrtl_dev->drop_fw = false; |
| |
| if (btrtl_dev->drop_fw) { |
| skb = bt_skb_alloc(sizeof(*cmd), GFP_KERNEL); |
| if (!skb) |
| goto err_free; |
| |
| cmd = skb_put(skb, HCI_COMMAND_HDR_SIZE); |
| cmd->opcode = cpu_to_le16(0xfc66); |
| cmd->plen = 0; |
| |
| hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; |
| |
| ret = hdev->send(hdev, skb); |
| if (ret < 0) { |
| bt_dev_err(hdev, "sending frame failed (%d)", ret); |
| kfree_skb(skb); |
| goto err_free; |
| } |
| |
| /* Ensure the above vendor command is sent to controller and |
| * process has done. |
| */ |
| msleep(200); |
| |
| goto check_version; |
| } |
| |
| 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; |
| } |
| |
| if (!btrtl_dev->ic_info->fw_name) { |
| ret = -ENOMEM; |
| goto err_free; |
| } |
| |
| btrtl_dev->fw_len = -EIO; |
| if (lmp_subver == RTL_ROM_LMP_8852A && hci_rev == 0x000c) { |
| snprintf(fw_name, sizeof(fw_name), "%s_v2.bin", |
| btrtl_dev->ic_info->fw_name); |
| btrtl_dev->fw_len = rtl_load_file(hdev, fw_name, |
| &btrtl_dev->fw_data); |
| } |
| |
| if (btrtl_dev->fw_len < 0) { |
| snprintf(fw_name, sizeof(fw_name), "%s.bin", |
| btrtl_dev->ic_info->fw_name); |
| btrtl_dev->fw_len = rtl_load_file(hdev, 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; |
| } |
| } |
| |
| /* The following chips supports the Microsoft vendor extension, |
| * therefore set the corresponding VsMsftOpCode. |
| */ |
| if (btrtl_dev->ic_info->has_msft_ext) |
| hci_set_msft_opcode(hdev, 0xFCF0); |
| |
| if (btrtl_dev->ic_info) |
| coredump_info->rtl_dump.controller = btrtl_dev->ic_info->hw_info; |
| |
| 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) |
| { |
| int err = 0; |
| |
| /* 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"); |
| err = 0; |
| goto done; |
| } |
| |
| switch (btrtl_dev->ic_info->lmp_subver) { |
| case RTL_ROM_LMP_8723A: |
| err = btrtl_setup_rtl8723a(hdev, btrtl_dev); |
| break; |
| 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: |
| case RTL_ROM_LMP_8703B: |
| case RTL_ROM_LMP_8851B: |
| err = btrtl_setup_rtl8723b(hdev, btrtl_dev); |
| break; |
| default: |
| rtl_dev_info(hdev, "assuming no firmware upload needed"); |
| break; |
| } |
| |
| done: |
| if (!err) |
| err = btrtl_register_devcoredump_support(hdev); |
| |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(btrtl_download_firmware); |
| |
| void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *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: |
| case CHIP_ID_8852B: |
| case CHIP_ID_8852C: |
| case CHIP_ID_8851B: |
| set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); |
| set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); |
| |
| /* RTL8852C needs to transmit mSBC data continuously without |
| * the zero length of USB packets for the ALT 6 supported chips |
| */ |
| if (btrtl_dev->project_id == CHIP_ID_8852C) |
| btrealtek_set_flag(hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP); |
| |
| if (btrtl_dev->project_id == CHIP_ID_8852A || |
| btrtl_dev->project_id == CHIP_ID_8852C) |
| set_bit(HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER, &hdev->quirks); |
| |
| hci_set_aosp_capable(hdev); |
| break; |
| default: |
| rtl_dev_dbg(hdev, "Central-peripheral role not enabled."); |
| rtl_dev_dbg(hdev, "WBS supported not enabled."); |
| break; |
| } |
| |
| if (!btrtl_dev->ic_info) |
| return; |
| |
| switch (btrtl_dev->ic_info->lmp_subver) { |
| case RTL_ROM_LMP_8703B: |
| /* 8723CS reports two pages for local ext features, |
| * but it doesn't support any features from page 2 - |
| * it either responds with garbage or with error status |
| */ |
| set_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, |
| &hdev->quirks); |
| break; |
| default: |
| break; |
| } |
| } |
| EXPORT_SYMBOL_GPL(btrtl_set_quirks); |
| |
| 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); |
| |
| btrtl_set_quirks(hdev, btrtl_dev); |
| |
| 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 <drake@endlessm.com>"); |
| 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/rtl8723cs_cg_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723d_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8723d_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/rtl8761b_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8761b_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8761bu_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8761bu_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8821c_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8821c_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8821cs_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8821cs_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8822cs_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8822cs_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8822cu_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8822cu_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8851bu_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8851bu_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852au_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852bs_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852bs_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852bu_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852bu_config.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin"); |
| MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin"); |