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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 *4 * Bluetooth HCI UART driver5 *6 * Copyright (C) 2000-2001 Qualcomm Incorporated7 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>8 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>9 */10 11#ifndef N_HCI12#define N_HCI 1513#endif14 15/* Ioctls */16#define HCIUARTSETPROTO _IOW('U', 200, int)17#define HCIUARTGETPROTO _IOR('U', 201, int)18#define HCIUARTGETDEVICE _IOR('U', 202, int)19#define HCIUARTSETFLAGS _IOW('U', 203, int)20#define HCIUARTGETFLAGS _IOR('U', 204, int)21 22/* UART protocols */23#define HCI_UART_MAX_PROTO 1324 25#define HCI_UART_H4 026#define HCI_UART_BCSP 127#define HCI_UART_3WIRE 228#define HCI_UART_H4DS 329#define HCI_UART_LL 430#define HCI_UART_ATH3K 531#define HCI_UART_INTEL 632#define HCI_UART_BCM 733#define HCI_UART_QCA 834#define HCI_UART_AG6XX 935#define HCI_UART_NOKIA 1036#define HCI_UART_MRVL 1137#define HCI_UART_AML 1238 39#define HCI_UART_RAW_DEVICE 040#define HCI_UART_RESET_ON_INIT 141#define HCI_UART_INIT_PENDING 342#define HCI_UART_EXT_CONFIG 443#define HCI_UART_VND_DETECT 544 45struct hci_uart;46struct serdev_device;47 48struct hci_uart_proto {49 unsigned int id;50 const char *name;51 unsigned int manufacturer;52 unsigned int init_speed;53 unsigned int oper_speed;54 int (*open)(struct hci_uart *hu);55 int (*close)(struct hci_uart *hu);56 int (*flush)(struct hci_uart *hu);57 int (*setup)(struct hci_uart *hu);58 int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);59 int (*recv)(struct hci_uart *hu, const void *data, int len);60 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);61 struct sk_buff *(*dequeue)(struct hci_uart *hu);62};63 64struct hci_uart {65 struct tty_struct *tty;66 struct serdev_device *serdev;67 struct hci_dev *hdev;68 unsigned long flags;69 unsigned long hdev_flags;70 71 struct work_struct init_ready;72 struct work_struct write_work;73 74 const struct hci_uart_proto *proto;75 struct percpu_rw_semaphore proto_lock; /* Stop work for proto close */76 void *priv;77 78 struct sk_buff *tx_skb;79 unsigned long tx_state;80 81 unsigned int init_speed;82 unsigned int oper_speed;83 84 u8 alignment;85 u8 padding;86};87 88/* HCI_UART proto flag bits */89#define HCI_UART_PROTO_SET 090#define HCI_UART_REGISTERED 191#define HCI_UART_PROTO_READY 292#define HCI_UART_NO_SUSPEND_NOTIFIER 393 94/* TX states */95#define HCI_UART_SENDING 196#define HCI_UART_TX_WAKEUP 297 98int hci_uart_register_proto(const struct hci_uart_proto *p);99int hci_uart_unregister_proto(const struct hci_uart_proto *p);100 101int hci_uart_register_device_priv(struct hci_uart *hu,102 const struct hci_uart_proto *p,103 int sizeof_priv);104 105static inline int hci_uart_register_device(struct hci_uart *hu,106 const struct hci_uart_proto *p)107{108 return hci_uart_register_device_priv(hu, p, 0);109}110 111void hci_uart_unregister_device(struct hci_uart *hu);112 113int hci_uart_tx_wakeup(struct hci_uart *hu);114int hci_uart_wait_until_sent(struct hci_uart *hu);115int hci_uart_init_ready(struct hci_uart *hu);116void hci_uart_init_work(struct work_struct *work);117void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);118bool hci_uart_has_flow_control(struct hci_uart *hu);119void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);120void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,121 unsigned int oper_speed);122 123#ifdef CONFIG_BT_HCIUART_H4124int h4_init(void);125int h4_deinit(void);126 127struct h4_recv_pkt {128 u8 type; /* Packet type */129 u8 hlen; /* Header length */130 u8 loff; /* Data length offset in header */131 u8 lsize; /* Data length field size */132 u16 maxlen; /* Max overall packet length */133 int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);134};135 136#define H4_RECV_ACL \137 .type = HCI_ACLDATA_PKT, \138 .hlen = HCI_ACL_HDR_SIZE, \139 .loff = 2, \140 .lsize = 2, \141 .maxlen = HCI_MAX_FRAME_SIZE \142 143#define H4_RECV_SCO \144 .type = HCI_SCODATA_PKT, \145 .hlen = HCI_SCO_HDR_SIZE, \146 .loff = 2, \147 .lsize = 1, \148 .maxlen = HCI_MAX_SCO_SIZE149 150#define H4_RECV_EVENT \151 .type = HCI_EVENT_PKT, \152 .hlen = HCI_EVENT_HDR_SIZE, \153 .loff = 1, \154 .lsize = 1, \155 .maxlen = HCI_MAX_EVENT_SIZE156 157#define H4_RECV_ISO \158 .type = HCI_ISODATA_PKT, \159 .hlen = HCI_ISO_HDR_SIZE, \160 .loff = 2, \161 .lsize = 2, \162 .maxlen = HCI_MAX_FRAME_SIZE \163 164struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,165 const unsigned char *buffer, int count,166 const struct h4_recv_pkt *pkts, int pkts_count);167#endif168 169#ifdef CONFIG_BT_HCIUART_BCSP170int bcsp_init(void);171int bcsp_deinit(void);172#endif173 174#ifdef CONFIG_BT_HCIUART_LL175int ll_init(void);176int ll_deinit(void);177#endif178 179#ifdef CONFIG_BT_HCIUART_ATH3K180int ath_init(void);181int ath_deinit(void);182#endif183 184#ifdef CONFIG_BT_HCIUART_3WIRE185int h5_init(void);186int h5_deinit(void);187#endif188 189#ifdef CONFIG_BT_HCIUART_INTEL190int intel_init(void);191int intel_deinit(void);192#endif193 194#ifdef CONFIG_BT_HCIUART_BCM195int bcm_init(void);196int bcm_deinit(void);197#endif198 199#ifdef CONFIG_BT_HCIUART_QCA200int qca_init(void);201int qca_deinit(void);202#endif203 204#ifdef CONFIG_BT_HCIUART_AG6XX205int ag6xx_init(void);206int ag6xx_deinit(void);207#endif208 209#ifdef CONFIG_BT_HCIUART_MRVL210int mrvl_init(void);211int mrvl_deinit(void);212#endif213 214#ifdef CONFIG_BT_HCIUART_AML215int aml_init(void);216int aml_deinit(void);217#endif218