From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- drivers/bluetooth/btrtl.h | 198 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 drivers/bluetooth/btrtl.h (limited to 'drivers/bluetooth/btrtl.h') diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h new file mode 100644 index 000000000..a2d9d34f9 --- /dev/null +++ b/drivers/bluetooth/btrtl.h @@ -0,0 +1,198 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Bluetooth support for Realtek devices + * + * Copyright (C) 2015 Endless Mobile, Inc. + */ + +#define RTL_FRAG_LEN 252 + +#define rtl_dev_err(dev, fmt, ...) bt_dev_err(dev, "RTL: " fmt, ##__VA_ARGS__) +#define rtl_dev_warn(dev, fmt, ...) bt_dev_warn(dev, "RTL: " fmt, ##__VA_ARGS__) +#define rtl_dev_info(dev, fmt, ...) bt_dev_info(dev, "RTL: " fmt, ##__VA_ARGS__) +#define rtl_dev_dbg(dev, fmt, ...) bt_dev_dbg(dev, "RTL: " fmt, ##__VA_ARGS__) + +struct btrtl_device_info; + +struct rtl_chip_type_evt { + __u8 status; + __u8 type; +} __packed; + +struct rtl_download_cmd { + __u8 index; + __u8 data[RTL_FRAG_LEN]; +} __packed; + +struct rtl_download_response { + __u8 status; + __u8 index; +} __packed; + +struct rtl_rom_version_evt { + __u8 status; + __u8 version; +} __packed; + +struct rtl_epatch_header { + __u8 signature[8]; + __le32 fw_version; + __le16 num_patches; +} __packed; + +struct rtl_vendor_config_entry { + __le16 offset; + __u8 len; + __u8 data[]; +} __packed; + +struct rtl_vendor_config { + __le32 signature; + __le16 total_len; + __u8 entry[]; +} __packed; + +struct rtl_epatch_header_v2 { + __u8 signature[8]; + __u8 fw_version[8]; + __le32 num_sections; +} __packed; + +struct rtl_section { + __le32 opcode; + __le32 len; + u8 data[]; +} __packed; + +struct rtl_section_hdr { + __le16 num; + __le16 reserved; +} __packed; + +struct rtl_common_subsec { + __u8 eco; + __u8 prio; + __u8 cb[2]; + __le32 len; + __u8 data[]; +}; + +struct rtl_sec_hdr { + __u8 eco; + __u8 prio; + __u8 key_id; + __u8 reserved; + __le32 len; + __u8 data[]; +} __packed; + +struct rtl_subsection { + struct list_head list; + u32 opcode; + u32 len; + u8 prio; + u8 *data; +}; + +struct rtl_iovec { + u8 *data; + u32 len; +}; + +struct rtl_vendor_cmd { + __u8 param[5]; +} __packed; + +enum { + REALTEK_ALT6_CONTINUOUS_TX_CHIP, + + __REALTEK_NUM_FLAGS, +}; + +struct rtl_dump_info { + const char *driver_name; + char *controller; + u32 fw_version; +}; + +struct btrealtek_data { + DECLARE_BITMAP(flags, __REALTEK_NUM_FLAGS); + + struct rtl_dump_info rtl_dump; +}; + +#define btrealtek_set_flag(hdev, nr) \ + do { \ + struct btrealtek_data *realtek = hci_get_priv((hdev)); \ + set_bit((nr), realtek->flags); \ + } while (0) + +#define btrealtek_get_flag(hdev) \ + (((struct btrealtek_data *)hci_get_priv(hdev))->flags) + +#define btrealtek_test_flag(hdev, nr) test_bit((nr), btrealtek_get_flag(hdev)) + +#if IS_ENABLED(CONFIG_BT_RTL) + +struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, + const char *postfix); +void btrtl_free(struct btrtl_device_info *btrtl_dev); +int btrtl_download_firmware(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev); +void btrtl_set_quirks(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev); +int btrtl_setup_realtek(struct hci_dev *hdev); +int btrtl_shutdown_realtek(struct hci_dev *hdev); +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); +void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name); + +#else + +static inline struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, + const char *postfix) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static inline void btrtl_free(struct btrtl_device_info *btrtl_dev) +{ +} + +static inline int btrtl_download_firmware(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev) +{ + return -EOPNOTSUPP; +} + +static inline void btrtl_set_quirks(struct hci_dev *hdev, + struct btrtl_device_info *btrtl_dev) +{ +} + +static inline int btrtl_setup_realtek(struct hci_dev *hdev) +{ + return -EOPNOTSUPP; +} + +static inline int btrtl_shutdown_realtek(struct hci_dev *hdev) +{ + return -EOPNOTSUPP; +} + +static inline 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) +{ + return -ENOENT; +} + +static inline void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name) +{ +} + +#endif -- cgit v1.3.1