cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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seq_clientmgr.h (2200B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 *   ALSA sequencer Client Manager
      4 *   Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
      5 */
      6#ifndef __SND_SEQ_CLIENTMGR_H
      7#define __SND_SEQ_CLIENTMGR_H
      8
      9#include <sound/seq_kernel.h>
     10#include <linux/bitops.h>
     11#include "seq_fifo.h"
     12#include "seq_ports.h"
     13#include "seq_lock.h"
     14
     15
     16/* client manager */
     17
     18struct snd_seq_user_client {
     19	struct file *file;	/* file struct of client */
     20	/* ... */
     21	struct pid *owner;
     22	
     23	/* fifo */
     24	struct snd_seq_fifo *fifo;	/* queue for incoming events */
     25	int fifo_pool_size;
     26};
     27
     28struct snd_seq_kernel_client {
     29	/* ... */
     30	struct snd_card *card;
     31};
     32
     33
     34struct snd_seq_client {
     35	snd_seq_client_type_t type;
     36	unsigned int accept_input: 1,
     37		accept_output: 1;
     38	char name[64];		/* client name */
     39	int number;		/* client number */
     40	unsigned int filter;	/* filter flags */
     41	DECLARE_BITMAP(event_filter, 256);
     42	snd_use_lock_t use_lock;
     43	int event_lost;
     44	/* ports */
     45	int num_ports;		/* number of ports */
     46	struct list_head ports_list_head;
     47	rwlock_t ports_lock;
     48	struct mutex ports_mutex;
     49	struct mutex ioctl_mutex;
     50	int convert32;		/* convert 32->64bit */
     51
     52	/* output pool */
     53	struct snd_seq_pool *pool;		/* memory pool for this client */
     54
     55	union {
     56		struct snd_seq_user_client user;
     57		struct snd_seq_kernel_client kernel;
     58	} data;
     59};
     60
     61/* usage statistics */
     62struct snd_seq_usage {
     63	int cur;
     64	int peak;
     65};
     66
     67
     68int client_init_data(void);
     69int snd_sequencer_device_init(void);
     70void snd_sequencer_device_done(void);
     71
     72/* get locked pointer to client */
     73struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
     74
     75/* unlock pointer to client */
     76#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
     77
     78/* dispatch event to client(s) */
     79int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
     80
     81int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
     82int snd_seq_client_notify_subscription(int client, int port,
     83				       struct snd_seq_port_subscribe *info, int evtype);
     84
     85/* only for OSS sequencer */
     86bool snd_seq_client_ioctl_lock(int clientid);
     87void snd_seq_client_ioctl_unlock(int clientid);
     88
     89extern int seq_client_load[15];
     90
     91#endif