You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
134 lines
4.0 KiB
134 lines
4.0 KiB
|
|
/*
|
|
* Copyright (c) 2012-2018 General Dynamics
|
|
* Copyright (c) 2014 Open Kernel Labs, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#if !defined(VSERVICES_SERVER_SERIAL)
|
|
#define VSERVICES_SERVER_SERIAL
|
|
|
|
struct vs_service_device;
|
|
struct vs_server_serial_state;
|
|
|
|
struct vs_server_serial {
|
|
|
|
/*
|
|
* If set to false then the receive message handlers are run from
|
|
* workqueue context and are allowed to sleep. If set to true the
|
|
* message handlers are run from tasklet context and may not sleep.
|
|
*/
|
|
bool rx_atomic;
|
|
|
|
/*
|
|
* If this is set to true along with rx_atomic, the driver is allowed
|
|
* to send messages from softirq contexts other than the receive
|
|
* message handlers, after calling vs_service_state_lock_bh. Otherwise,
|
|
* messages may only be sent from the receive message handlers, or
|
|
* from task context after calling vs_service_state_lock. This must
|
|
* not be set to true if rx_atomic is set to false.
|
|
*/
|
|
bool tx_atomic;
|
|
|
|
/*
|
|
* These are the driver's recommended message quotas. They are used
|
|
* by the core service to select message quotas for services with no
|
|
* explicitly configured quotas.
|
|
*/
|
|
u32 in_quota_best;
|
|
u32 out_quota_best;
|
|
/** session setup **/
|
|
struct vs_server_serial_state *(*alloc) (struct vs_service_device *
|
|
service);
|
|
void (*release) (struct vs_server_serial_state * _state);
|
|
|
|
struct vs_service_driver *driver;
|
|
|
|
/** Open, reopen, close and closed functions **/
|
|
|
|
vs_server_response_type_t(*open) (struct vs_server_serial_state *
|
|
_state);
|
|
|
|
vs_server_response_type_t(*reopen) (struct vs_server_serial_state *
|
|
_state);
|
|
|
|
vs_server_response_type_t(*close) (struct vs_server_serial_state *
|
|
_state);
|
|
|
|
void (*closed) (struct vs_server_serial_state * _state);
|
|
|
|
/** Send/receive state callbacks **/
|
|
int (*tx_ready) (struct vs_server_serial_state * _state);
|
|
|
|
struct {
|
|
int (*msg_msg) (struct vs_server_serial_state * _state,
|
|
struct vs_pbuf b, struct vs_mbuf * _mbuf);
|
|
|
|
} serial;
|
|
};
|
|
|
|
struct vs_server_serial_state {
|
|
vservice_serial_protocol_state_t state;
|
|
uint32_t packet_size;
|
|
struct {
|
|
uint32_t packet_size;
|
|
} serial;
|
|
struct vs_service_device *service;
|
|
bool released;
|
|
};
|
|
|
|
/** Complete calls for server core functions **/
|
|
extern int vs_server_serial_open_complete(struct vs_server_serial_state *_state,
|
|
vs_server_response_type_t resp);
|
|
|
|
extern int vs_server_serial_close_complete(struct vs_server_serial_state
|
|
*_state,
|
|
vs_server_response_type_t resp);
|
|
|
|
extern int vs_server_serial_reopen_complete(struct vs_server_serial_state
|
|
*_state,
|
|
vs_server_response_type_t resp);
|
|
|
|
/** interface serial **/
|
|
/* message msg */
|
|
extern struct vs_mbuf *vs_server_serial_serial_alloc_msg(struct
|
|
vs_server_serial_state
|
|
*_state,
|
|
struct vs_pbuf *b,
|
|
gfp_t flags);
|
|
extern int vs_server_serial_serial_getbufs_msg(struct vs_server_serial_state
|
|
*_state, struct vs_pbuf *b,
|
|
struct vs_mbuf *_mbuf);
|
|
extern int vs_server_serial_serial_free_msg(struct vs_server_serial_state
|
|
*_state, struct vs_pbuf *b,
|
|
struct vs_mbuf *_mbuf);
|
|
extern int vs_server_serial_serial_send_msg(struct vs_server_serial_state
|
|
*_state, struct vs_pbuf b,
|
|
struct vs_mbuf *_mbuf);
|
|
|
|
/** Module registration **/
|
|
|
|
struct module;
|
|
|
|
extern int __vservice_serial_server_register(struct vs_server_serial *server,
|
|
const char *name,
|
|
struct module *owner);
|
|
|
|
static inline int vservice_serial_server_register(struct vs_server_serial
|
|
*server, const char *name)
|
|
{
|
|
#ifdef MODULE
|
|
extern struct module __this_module;
|
|
struct module *this_module = &__this_module;
|
|
#else
|
|
struct module *this_module = NULL;
|
|
#endif
|
|
|
|
return __vservice_serial_server_register(server, name, this_module);
|
|
}
|
|
|
|
extern int vservice_serial_server_unregister(struct vs_server_serial *server);
|
|
#endif /* ! VSERVICES_SERVER_SERIAL */
|
|
|