/* SPDX-License-Identifier: GPL-2.0-or-later *//* * *  Bluetooth HCI UART driver * *  Copyright (C) 2000-2001  Qualcomm Incorporated *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com> *  Copyright (C) 2004-2005  Marcel Holtmann <marcel@holtmann.org> */ #ifndef N_HCI#define N_HCI	15#endif /* Ioctls */#define HCIUARTSETPROTO		_IOW('U', 200, int)#define HCIUARTGETPROTO		_IOR('U', 201, int)#define HCIUARTGETDEVICE	_IOR('U', 202, int)#define HCIUARTSETFLAGS		_IOW('U', 203, int)#define HCIUARTGETFLAGS		_IOR('U', 204, int) /* UART protocols */#define HCI_UART_MAX_PROTO	13 #define HCI_UART_H4	0#define HCI_UART_BCSP	1#define HCI_UART_3WIRE	2#define HCI_UART_H4DS	3#define HCI_UART_LL	4#define HCI_UART_ATH3K	5#define HCI_UART_INTEL	6#define HCI_UART_BCM	7#define HCI_UART_QCA	8#define HCI_UART_AG6XX	9#define HCI_UART_NOKIA	10#define HCI_UART_MRVL	11#define HCI_UART_AML	12 #define HCI_UART_RAW_DEVICE	0#define HCI_UART_RESET_ON_INIT	1#define HCI_UART_INIT_PENDING	3#define HCI_UART_EXT_CONFIG	4#define HCI_UART_VND_DETECT	5 struct hci_uart;struct serdev_device; struct hci_uart_proto {	unsigned int id;	const char *name;	unsigned int manufacturer;	unsigned int init_speed;	unsigned int oper_speed;	int (*open)(struct hci_uart *hu);	int (*close)(struct hci_uart *hu);	int (*flush)(struct hci_uart *hu);	int (*setup)(struct hci_uart *hu);	int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);	int (*recv)(struct hci_uart *hu, const void *data, int len);	int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);	struct sk_buff *(*dequeue)(struct hci_uart *hu);}; struct hci_uart {	struct tty_struct	*tty;	struct serdev_device	*serdev;	struct hci_dev		*hdev;	unsigned long		flags;	unsigned long		hdev_flags; 	struct work_struct	init_ready;	struct work_struct	write_work; 	const struct hci_uart_proto *proto;	struct percpu_rw_semaphore proto_lock;	/* Stop work for proto close */	void			*priv; 	struct sk_buff		*tx_skb;	unsigned long		tx_state; 	unsigned int init_speed;	unsigned int oper_speed; 	u8			alignment;	u8			padding;}; /* HCI_UART proto flag bits */#define HCI_UART_PROTO_SET		0#define HCI_UART_REGISTERED		1#define HCI_UART_PROTO_READY		2#define HCI_UART_NO_SUSPEND_NOTIFIER	3#define HCI_UART_PROTO_INIT		4 /* TX states  */#define HCI_UART_SENDING	1#define HCI_UART_TX_WAKEUP	2 int hci_uart_register_proto(const struct hci_uart_proto *p);int hci_uart_unregister_proto(const struct hci_uart_proto *p); int hci_uart_register_device_priv(struct hci_uart *hu,				  const struct hci_uart_proto *p,				  int sizeof_priv); static inline int hci_uart_register_device(struct hci_uart *hu,					   const struct hci_uart_proto *p){	return hci_uart_register_device_priv(hu, p, 0);} void hci_uart_unregister_device(struct hci_uart *hu); int hci_uart_tx_wakeup(struct hci_uart *hu);int hci_uart_wait_until_sent(struct hci_uart *hu);int hci_uart_init_ready(struct hci_uart *hu);void hci_uart_init_work(struct work_struct *work);void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);bool hci_uart_has_flow_control(struct hci_uart *hu);void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,			 unsigned int oper_speed); struct h4_recv_pkt {	u8  type;	/* Packet type */	u8  hlen;	/* Header length */	u8  loff;	/* Data length offset in header */	u8  lsize;	/* Data length field size */	u16 maxlen;	/* Max overall packet length */	int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);}; #define H4_RECV_ACL \	.type = HCI_ACLDATA_PKT, \	.hlen = HCI_ACL_HDR_SIZE, \	.loff = 2, \	.lsize = 2, \	.maxlen = HCI_MAX_FRAME_SIZE \ #define H4_RECV_SCO \	.type = HCI_SCODATA_PKT, \	.hlen = HCI_SCO_HDR_SIZE, \	.loff = 2, \	.lsize = 1, \	.maxlen = HCI_MAX_SCO_SIZE #define H4_RECV_EVENT \	.type = HCI_EVENT_PKT, \	.hlen = HCI_EVENT_HDR_SIZE, \	.loff = 1, \	.lsize = 1, \	.maxlen = HCI_MAX_EVENT_SIZE #define H4_RECV_ISO \	.type = HCI_ISODATA_PKT, \	.hlen = HCI_ISO_HDR_SIZE, \	.loff = 2, \	.lsize = 2, \	.maxlen = HCI_MAX_FRAME_SIZE \ #ifdef CONFIG_BT_HCIUART_H4int h4_init(void);int h4_deinit(void); struct sk_buff *h4_recv_buf(struct hci_uart *hu, struct sk_buff *skb,			    const unsigned char *buffer, int count,			    const struct h4_recv_pkt *pkts, int pkts_count);#endif #ifdef CONFIG_BT_HCIUART_BCSPint bcsp_init(void);int bcsp_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_LLint ll_init(void);int ll_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_ATH3Kint ath_init(void);int ath_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_3WIREint h5_init(void);int h5_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_INTELint intel_init(void);int intel_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_BCMint bcm_init(void);int bcm_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_QCAint qca_init(void);int qca_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_AG6XXint ag6xx_init(void);int ag6xx_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_MRVLint mrvl_init(void);int mrvl_deinit(void);#endif #ifdef CONFIG_BT_HCIUART_AMLint aml_init(void);int aml_deinit(void);#endif