/*-
* Copyright (c) 2014 Jakub Wojciech Klama <jceel@FreeBSD.org>
* Copyright (c) 2015-2016 Vladimir Kondratyev <wulf@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _DEV_EVDEV_EVDEV_PRIVATE_H
#define _DEV_EVDEV_EVDEV_PRIVATE_H
#include <sys/bitstring.h>
#include <sys/kbio.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/selinfo.h>
#include <dev/evdev/evdev.h>
#include <dev/evdev/input.h>
#include <dev/kbd/kbdreg.h>
#define NAMELEN 80
/*
* bitstr_t implementation must be identical to one found in EVIOCG*
* libevdev ioctls. Our bitstring(3) API is compatible since r299090.
*/
_Static_assert(sizeof(bitstr_t) == sizeof(unsigned long),
"bitstr_t size mismatch");
MALLOC_DECLARE(M_EVDEV);
struct evdev_client;
struct evdev_mt;
#define CURRENT_MT_SLOT(evdev) ((evdev)->ev_absinfo[ABS_MT_SLOT].value)
#define MAXIMAL_MT_SLOT(evdev) ((evdev)->ev_absinfo[ABS_MT_SLOT].maximum)
enum evdev_key_events
{
KEY_EVENT_UP,
KEY_EVENT_DOWN,
KEY_EVENT_REPEAT
};
/* evdev clock IDs in Linux semantic */
enum evdev_clock_id
{
EV_CLOCK_REALTIME = 0, /* UTC clock */
EV_CLOCK_MONOTONIC, /* monotonic, stops on suspend */
EV_CLOCK_BOOTTIME /* monotonic, suspend-awared */
};
enum evdev_lock_type
{
EV_LOCK_INTERNAL = 0, /* Internal evdev mutex */
EV_LOCK_MTX, /* Driver`s mutex */
};
struct evdev_dev
{
char ev_name[NAMELEN];
char ev_shortname[NAMELEN];
char ev_serial[NAMELEN];
struct cdev * ev_cdev;
int ev_unit;
enum evdev_lock_type ev_lock_type;
struct mtx * ev_lock;
struct mtx ev_mtx;
struct input_id ev_id;
struct evdev_client * ev_grabber;
size_t ev_report_size;
/* Supported features: */
bitstr_t bit_decl(ev_prop_flags, INPUT_PROP_CNT);
bitstr_t bit_decl(ev_type_flags, EV_CNT);
bitstr_t bit_decl(ev_key_flags, KEY_CNT);
bitstr_t bit_decl(ev_rel_flags, REL_CNT);
bitstr_t bit_decl(ev_abs_flags, ABS_CNT);
bitstr_t bit_decl(ev_msc_flags, MSC_CNT);
bitstr_t bit_decl(ev_led_flags, LED_CNT);
bitstr_t bit_decl(ev_snd_flags, SND_CNT);
bitstr_t bit_decl(ev_sw_flags, SW_CNT);
struct input_absinfo * ev_absinfo;
bitstr_t bit_decl(ev_flags, EVDEV_FLAG_CNT);
/* Repeat parameters & callout: */
int ev_rep[REP_CNT];
struct callout ev_rep_callout;
uint16_t ev_rep_key;
/* State: */
bitstr_t bit_decl(ev_key_states, KEY_CNT);
bitstr_t bit_decl(ev_led_states, LED_CNT);
bitstr_t bit_decl(ev_snd_states, SND_CNT);
bitstr_t bit_decl(ev_sw_states, SW_CNT);
bool ev_report_opened;
/* KDB state: */
bool ev_kdb_active;
bitstr_t bit_decl(ev_kdb_led_states, LED_CNT);
/* Multitouch protocol type B state: */
struct evdev_mt * ev_mt;
/* Counters: */
uint64_t ev_event_count;
uint64_t ev_report_count;
/* Parent driver callbacks: */
const struct evdev_methods * ev_methods;
void * ev_softc;
LIST_ENTRY(evdev_dev) ev_link;
LIST_HEAD(, evdev_client) ev_clients;
};
#define SYSTEM_CONSOLE_LOCK &Giant
#define EVDEV_LOCK(evdev) mtx_lock((evdev)->ev_lock)
#define EVDEV_UNLOCK(evdev) mtx_unlock((evdev)->ev_lock)
#define EVDEV_LOCK_ASSERT(evdev) do { \
if ((evdev)->ev_lock != SYSTEM_CONSOLE_LOCK) \
mtx_assert((evdev)->ev_lock, MA_OWNED); \
} while (0)
#define EVDEV_ENTER(evdev) do { \
if ((evdev)->ev_lock_type == EV_LOCK_INTERNAL) \
EVDEV_LOCK(evdev); \
else \
EVDEV_LOCK_ASSERT(evdev); \
} while (0)
#define EVDEV_EXIT(evdev) do { \
if ((evdev)->ev_lock_type == EV_LOCK_INTERNAL) \
EVDEV_UNLOCK(evdev); \
} while (0)
struct evdev_client
{
struct evdev_dev * ec_evdev;
struct mtx ec_buffer_mtx;
size_t ec_buffer_size;
size_t ec_buffer_head;
size_t ec_buffer_tail;
size_t ec_buffer_ready;
enum evdev_clock_id ec_clock_id;
struct selinfo ec_selp;
struct sigio * ec_sigio;
bool ec_async;
bool ec_revoked;
bool ec_blocked;
bool ec_selected;
LIST_ENTRY(evdev_client) ec_link;
struct input_event ec_buffer[];
};
#define EVDEV_CLIENT_LOCKQ(client) mtx_lock(&(client)->ec_buffer_mtx)
#define EVDEV_CLIENT_UNLOCKQ(client) mtx_unlock(&(client)->ec_buffer_mtx)
#define EVDEV_CLIENT_LOCKQ_ASSERT(client) \
mtx_assert(&(client)->ec_buffer_mtx, MA_OWNED)
#define EVDEV_CLIENT_EMPTYQ(client) \
((client)->ec_buffer_head == (client)->ec_buffer_ready)
#define EVDEV_CLIENT_SIZEQ(client) \
(((client)->ec_buffer_ready + (client)->ec_buffer_size - \
(client)->ec_buffer_head) % (client)->ec_buffer_size)
/* Input device interface: */
void evdev_send_event(struct evdev_dev *, uint16_t, uint16_t, int32_t);
int evdev_inject_event(struct evdev_dev *, uint16_t, uint16_t, int32_t);
int evdev_cdev_create(struct evdev_dev *);
int evdev_cdev_destroy(struct evdev_dev *);
bool evdev_event_supported(struct evdev_dev *, uint16_t);
void evdev_set_abs_bit(struct evdev_dev *, uint16_t);
void evdev_set_absinfo(struct evdev_dev *, uint16_t, struct input_absinfo *);
void evdev_restore_after_kdb(struct evdev_dev *);
/* Client interface: */
int evdev_register_client(struct evdev_dev *, struct evdev_client *);
void evdev_dispose_client(struct evdev_dev *, struct evdev_client *);
int evdev_grab_client(struct evdev_dev *, struct evdev_client *);
int evdev_release_client(struct evdev_dev *, struct evdev_client *);
void evdev_client_push(struct evdev_client *, uint16_t, uint16_t, int32_t);
void evdev_notify_event(struct evdev_client *);
void evdev_revoke_client(struct evdev_client *);
/* Multitouch related functions: */
void evdev_mt_init(struct evdev_dev *);
void evdev_mt_free(struct evdev_dev *);
int32_t evdev_get_last_mt_slot(struct evdev_dev *);
void evdev_set_last_mt_slot(struct evdev_dev *, int32_t);
int32_t evdev_get_mt_value(struct evdev_dev *, int32_t, int16_t);
void evdev_set_mt_value(struct evdev_dev *, int32_t, int16_t, int32_t);
void evdev_send_mt_compat(struct evdev_dev *);
void evdev_send_mt_autorel(struct evdev_dev *);
/* Utility functions: */
void evdev_client_dumpqueue(struct evdev_client *);
#endif /* _DEV_EVDEV_EVDEV_PRIVATE_H */
