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_oss_device.h (4116B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * OSS compatible sequencer driver
      4 *
      5 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
      6 */
      7
      8#ifndef __SEQ_OSS_DEVICE_H
      9#define __SEQ_OSS_DEVICE_H
     10
     11#include <linux/time.h>
     12#include <linux/wait.h>
     13#include <linux/slab.h>
     14#include <linux/sched/signal.h>
     15#include <sound/core.h>
     16#include <sound/seq_oss.h>
     17#include <sound/rawmidi.h>
     18#include <sound/seq_kernel.h>
     19#include <sound/info.h>
     20#include "../seq_clientmgr.h"
     21
     22/* max. applications */
     23#define SNDRV_SEQ_OSS_MAX_CLIENTS	16
     24#define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS	16
     25#define SNDRV_SEQ_OSS_MAX_MIDI_DEVS	32
     26
     27/* version */
     28#define SNDRV_SEQ_OSS_MAJOR_VERSION	0
     29#define SNDRV_SEQ_OSS_MINOR_VERSION	1
     30#define SNDRV_SEQ_OSS_TINY_VERSION	8
     31#define SNDRV_SEQ_OSS_VERSION_STR	"0.1.8"
     32
     33/* device and proc interface name */
     34#define SNDRV_SEQ_OSS_PROCNAME		"oss"
     35
     36
     37/*
     38 * type definitions
     39 */
     40
     41typedef unsigned int reltime_t;
     42typedef unsigned int abstime_t;
     43
     44
     45/*
     46 * synthesizer channel information
     47 */
     48struct seq_oss_chinfo {
     49	int note, vel;
     50};
     51
     52/*
     53 * synthesizer information
     54 */
     55struct seq_oss_synthinfo {
     56	struct snd_seq_oss_arg arg;
     57	struct seq_oss_chinfo *ch;
     58	struct seq_oss_synth_sysex *sysex;
     59	int nr_voices;
     60	int opened;
     61	int is_midi;
     62	int midi_mapped;
     63};
     64
     65
     66/*
     67 * sequencer client information
     68 */
     69
     70struct seq_oss_devinfo {
     71
     72	int index;	/* application index */
     73	int cseq;	/* sequencer client number */
     74	int port;	/* sequencer port number */
     75	int queue;	/* sequencer queue number */
     76
     77	struct snd_seq_addr addr;	/* address of this device */
     78
     79	int seq_mode;	/* sequencer mode */
     80	int file_mode;	/* file access */
     81
     82	/* midi device table */
     83	int max_mididev;
     84
     85	/* synth device table */
     86	int max_synthdev;
     87	struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
     88	int synth_opened;
     89
     90	/* output queue */
     91	struct seq_oss_writeq *writeq;
     92
     93	/* midi input queue */
     94	struct seq_oss_readq *readq;
     95
     96	/* timer */
     97	struct seq_oss_timer *timer;
     98};
     99
    100
    101/*
    102 * function prototypes
    103 */
    104
    105/* create/delete OSS sequencer client */
    106int snd_seq_oss_create_client(void);
    107int snd_seq_oss_delete_client(void);
    108
    109/* device file interface */
    110int snd_seq_oss_open(struct file *file, int level);
    111void snd_seq_oss_release(struct seq_oss_devinfo *dp);
    112int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg);
    113int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count);
    114int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt);
    115__poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
    116
    117void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
    118
    119/* */
    120void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
    121
    122
    123/* proc interface */
    124void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
    125void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
    126void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
    127void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
    128
    129/* file mode macros */
    130#define is_read_mode(mode)	((mode) & SNDRV_SEQ_OSS_FILE_READ)
    131#define is_write_mode(mode)	((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
    132#define is_nonblock_mode(mode)	((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
    133
    134/* dispatch event */
    135static inline int
    136snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
    137{
    138	return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
    139}
    140
    141/* ioctl for writeq */
    142static inline int
    143snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
    144{
    145	int err;
    146
    147	snd_seq_client_ioctl_lock(dp->cseq);
    148	err = snd_seq_kernel_client_ctl(dp->cseq, type, arg);
    149	snd_seq_client_ioctl_unlock(dp->cseq);
    150	return err;
    151}
    152
    153/* fill the addresses in header */
    154static inline void
    155snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
    156		     int dest_client, int dest_port)
    157{
    158	ev->queue = dp->queue;
    159	ev->source = dp->addr;
    160	ev->dest.client = dest_client;
    161	ev->dest.port = dest_port;
    162}
    163
    164
    165/* misc. functions for proc interface */
    166char *enabled_str(int bool);
    167
    168#endif /* __SEQ_OSS_DEVICE_H */