mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-10-26 10:57:38 +08:00
Luiz Augusto von Dentz
5299db91df
h4_recv_buf() is currently implemented in hci_h4.c which is only built as part of the hci_uart module, and only when CONFIG_BT_HCIUART_H4 is enabled. That makes the H:4 reassembly logic unusable by drivers which do not depend on hci_uart, e.g. btusb which needs it to implement Bulk Serialization Mode. Move the transport agnostic part into the Bluetooth core as h4_recv_skb(), which takes a struct hci_dev instead of a struct hci_uart, along with struct h4_recv_pkt and the H4_RECV_* helpers, and keep h4_recv_buf() as a thin wrapper for the hci_uart protocols. Since every Bluetooth driver already depends on the bluetooth module this introduces no new module dependency and no new Kconfig symbol. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
184 lines
4.3 KiB
C
184 lines
4.3 KiB
C
/* 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>
|
|
*/
|
|
|
|
#include <net/bluetooth/hci_h4.h>
|
|
|
|
#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);
|
|
|
|
#ifdef CONFIG_BT_HCIUART_H4
|
|
int 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_BCSP
|
|
int bcsp_init(void);
|
|
int bcsp_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_LL
|
|
int ll_init(void);
|
|
int ll_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_ATH3K
|
|
int ath_init(void);
|
|
int ath_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_3WIRE
|
|
int h5_init(void);
|
|
int h5_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_INTEL
|
|
int intel_init(void);
|
|
int intel_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_BCM
|
|
int bcm_init(void);
|
|
int bcm_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_QCA
|
|
int qca_init(void);
|
|
int qca_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_AG6XX
|
|
int ag6xx_init(void);
|
|
int ag6xx_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_MRVL
|
|
int mrvl_init(void);
|
|
int mrvl_deinit(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_BT_HCIUART_AML
|
|
int aml_init(void);
|
|
int aml_deinit(void);
|
|
#endif
|