| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2025 Google Corporation |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef __HCI_DRV_H |
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| 7 | #define __HCI_DRV_H |
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| 8 | |
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| 9 | #include <linux/types.h> |
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| 10 | |
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| 11 | #include <net/bluetooth/bluetooth.h> |
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| 12 | #include <net/bluetooth/hci.h> |
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| 13 | |
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| 14 | struct hci_drv_cmd_hdr { |
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| 15 | __le16 opcode; |
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| 16 | __le16 len; |
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| 17 | } __packed; |
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| 18 | |
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| 19 | struct hci_drv_ev_hdr { |
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| 20 | __le16 opcode; |
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| 21 | __le16 len; |
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| 22 | } __packed; |
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| 23 | |
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| 24 | #define HCI_DRV_EV_CMD_STATUS 0x0000 |
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| 25 | struct hci_drv_ev_cmd_status { |
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| 26 | __le16 opcode; |
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| 27 | __u8 status; |
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| 28 | } __packed; |
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| 29 | |
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| 30 | #define HCI_DRV_EV_CMD_COMPLETE 0x0001 |
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| 31 | struct hci_drv_ev_cmd_complete { |
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| 32 | __le16 opcode; |
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| 33 | __u8 status; |
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| 34 | __u8 data[]; |
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| 35 | } __packed; |
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| 36 | |
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| 37 | #define HCI_DRV_STATUS_SUCCESS 0x00 |
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| 38 | #define HCI_DRV_STATUS_UNSPECIFIED_ERROR 0x01 |
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| 39 | #define HCI_DRV_STATUS_UNKNOWN_COMMAND 0x02 |
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| 40 | #define HCI_DRV_STATUS_INVALID_PARAMETERS 0x03 |
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| 41 | |
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| 42 | #define HCI_DRV_MAX_DRIVER_NAME_LENGTH 32 |
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| 43 | |
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| 44 | /* Common commands that make sense on all drivers start from 0x0000 */ |
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| 45 | #define HCI_DRV_OP_READ_INFO 0x0000 |
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| 46 | #define HCI_DRV_READ_INFO_SIZE 0 |
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| 47 | struct hci_drv_rp_read_info { |
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| 48 | __u8 driver_name[HCI_DRV_MAX_DRIVER_NAME_LENGTH]; |
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| 49 | __le16 num_supported_commands; |
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| 50 | __le16 supported_commands[] __counted_by_le(num_supported_commands); |
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| 51 | } __packed; |
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| 52 | |
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| 53 | /* Driver specific OGF (Opcode Group Field) |
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| 54 | * Commands in this group may have different meanings across different drivers. |
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| 55 | */ |
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| 56 | #define HCI_DRV_OGF_DRIVER_SPECIFIC 0x01 |
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| 57 | |
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| 58 | int hci_drv_cmd_status(struct hci_dev *hdev, u16 cmd, u8 status); |
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| 59 | int hci_drv_cmd_complete(struct hci_dev *hdev, u16 cmd, u8 status, void *rp, |
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| 60 | size_t rp_len); |
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| 61 | int hci_drv_process_cmd(struct hci_dev *hdev, struct sk_buff *cmd_skb); |
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| 62 | |
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| 63 | struct hci_drv_handler { |
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| 64 | int (*func)(struct hci_dev *hdev, void *data, u16 data_len); |
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| 65 | size_t data_len; |
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| 66 | }; |
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| 67 | |
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| 68 | struct hci_drv { |
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| 69 | size_t common_handler_count; |
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| 70 | const struct hci_drv_handler *common_handlers; |
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| 71 | |
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| 72 | size_t specific_handler_count; |
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| 73 | const struct hci_drv_handler *specific_handlers; |
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| 74 | }; |
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| 75 | |
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| 76 | #endif /* __HCI_DRV_H */ |
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| 77 | |
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