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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132/* SPDX-License-Identifier: GPL-2.0 *//* * Greybus connections * * Copyright 2014 Google Inc. * Copyright 2014 Linaro Ltd. */
#ifndef __CONNECTION_H#define __CONNECTION_H
#include <linux/bits.h>#include <linux/list.h>#include <linux/kfifo.h>#include <linux/kref.h>#include <linux/workqueue.h>
#define GB_CONNECTION_FLAG_CSD BIT(0)#define GB_CONNECTION_FLAG_NO_FLOWCTRL BIT(1)#define GB_CONNECTION_FLAG_OFFLOADED BIT(2)#define GB_CONNECTION_FLAG_CDSI1 BIT(3)#define GB_CONNECTION_FLAG_CONTROL BIT(4)#define GB_CONNECTION_FLAG_HIGH_PRIO BIT(5)
#define GB_CONNECTION_FLAG_CORE_MASK GB_CONNECTION_FLAG_CONTROL
enum gb_connection_state { GB_CONNECTION_STATE_DISABLED = 0, GB_CONNECTION_STATE_ENABLED_TX = 1, GB_CONNECTION_STATE_ENABLED = 2, GB_CONNECTION_STATE_DISCONNECTING = 3,};
struct gb_operation;
typedef int (*gb_request_handler_t)(struct gb_operation *);
struct gb_connection { struct gb_host_device *hd; struct gb_interface *intf; struct gb_bundle *bundle; struct kref kref; u16 hd_cport_id; u16 intf_cport_id;
struct list_head hd_links; struct list_head bundle_links;
gb_request_handler_t handler; unsigned long flags;
struct mutex mutex; spinlock_t lock; enum gb_connection_state state; struct list_head operations;
char name[16]; struct workqueue_struct *wq;
atomic_t op_cycle;
void *private;
bool mode_switch;};
struct gb_connection *gb_connection_create_static(struct gb_host_device *hd, u16 hd_cport_id, gb_request_handler_t handler);struct gb_connection *gb_connection_create_control(struct gb_interface *intf);struct gb_connection *gb_connection_create(struct gb_bundle *bundle, u16 cport_id, gb_request_handler_t handler);struct gb_connection *gb_connection_create_flags(struct gb_bundle *bundle, u16 cport_id, gb_request_handler_t handler, unsigned long flags);struct gb_connection *gb_connection_create_offloaded(struct gb_bundle *bundle, u16 cport_id, unsigned long flags);void gb_connection_destroy(struct gb_connection *connection);
static inline bool gb_connection_is_static(struct gb_connection *connection){ return !connection->intf;}
int gb_connection_enable(struct gb_connection *connection);int gb_connection_enable_tx(struct gb_connection *connection);void gb_connection_disable_rx(struct gb_connection *connection);void gb_connection_disable(struct gb_connection *connection);void gb_connection_disable_forced(struct gb_connection *connection);
void gb_connection_mode_switch_prepare(struct gb_connection *connection);void gb_connection_mode_switch_complete(struct gb_connection *connection);
void greybus_data_rcvd(struct gb_host_device *hd, u16 cport_id, u8 *data, size_t length);
void gb_connection_latency_tag_enable(struct gb_connection *connection);void gb_connection_latency_tag_disable(struct gb_connection *connection);
static inline bool gb_connection_e2efc_enabled(struct gb_connection *connection){ return !(connection->flags & GB_CONNECTION_FLAG_CSD);}
static inline boolgb_connection_flow_control_disabled(struct gb_connection *connection){ return connection->flags & GB_CONNECTION_FLAG_NO_FLOWCTRL;}
static inline bool gb_connection_is_offloaded(struct gb_connection *connection){ return connection->flags & GB_CONNECTION_FLAG_OFFLOADED;}
static inline bool gb_connection_is_control(struct gb_connection *connection){ return connection->flags & GB_CONNECTION_FLAG_CONTROL;}
static inline void *gb_connection_get_data(struct gb_connection *connection){ return connection->private;}
static inline void gb_connection_set_data(struct gb_connection *connection, void *data){ connection->private = data;}
#endif /* __CONNECTION_H */