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.c (3245B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  ALSA sequencer main module
      4 *  Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
      5 */
      6
      7#include <linux/init.h>
      8#include <linux/module.h>
      9#include <linux/device.h>
     10#include <sound/core.h>
     11#include <sound/initval.h>
     12
     13#include <sound/seq_kernel.h>
     14#include "seq_clientmgr.h"
     15#include "seq_memory.h"
     16#include "seq_queue.h"
     17#include "seq_lock.h"
     18#include "seq_timer.h"
     19#include "seq_system.h"
     20#include "seq_info.h"
     21#include <sound/minors.h>
     22#include <sound/seq_device.h>
     23
     24#if defined(CONFIG_SND_SEQ_DUMMY_MODULE)
     25int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1};
     26#else
     27int seq_client_load[15] = {[0 ... 14] = -1};
     28#endif
     29int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL;
     30int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE;
     31int seq_default_timer_card = -1;
     32int seq_default_timer_device =
     33#ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT
     34	SNDRV_TIMER_GLOBAL_HRTIMER
     35#else
     36	SNDRV_TIMER_GLOBAL_SYSTEM
     37#endif
     38	;
     39int seq_default_timer_subdevice = 0;
     40int seq_default_timer_resolution = 0;	/* Hz */
     41
     42MODULE_AUTHOR("Frank van de Pol <fvdpol@coil.demon.nl>, Jaroslav Kysela <perex@perex.cz>");
     43MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer.");
     44MODULE_LICENSE("GPL");
     45
     46module_param_array(seq_client_load, int, NULL, 0444);
     47MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod.");
     48module_param(seq_default_timer_class, int, 0644);
     49MODULE_PARM_DESC(seq_default_timer_class, "The default timer class.");
     50module_param(seq_default_timer_sclass, int, 0644);
     51MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class.");
     52module_param(seq_default_timer_card, int, 0644);
     53MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number.");
     54module_param(seq_default_timer_device, int, 0644);
     55MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number.");
     56module_param(seq_default_timer_subdevice, int, 0644);
     57MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number.");
     58module_param(seq_default_timer_resolution, int, 0644);
     59MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz.");
     60
     61MODULE_ALIAS_CHARDEV(CONFIG_SND_MAJOR, SNDRV_MINOR_SEQUENCER);
     62MODULE_ALIAS("devname:snd/seq");
     63
     64/*
     65 *  INIT PART
     66 */
     67
     68static int __init alsa_seq_init(void)
     69{
     70	int err;
     71
     72	err = client_init_data();
     73	if (err < 0)
     74		goto error;
     75
     76	/* register sequencer device */
     77	err = snd_sequencer_device_init();
     78	if (err < 0)
     79		goto error;
     80
     81	/* register proc interface */
     82	err = snd_seq_info_init();
     83	if (err < 0)
     84		goto error_device;
     85
     86	/* register our internal client */
     87	err = snd_seq_system_client_init();
     88	if (err < 0)
     89		goto error_info;
     90
     91	snd_seq_autoload_init();
     92	return 0;
     93
     94 error_info:
     95	snd_seq_info_done();
     96 error_device:
     97	snd_sequencer_device_done();
     98 error:
     99	return err;
    100}
    101
    102static void __exit alsa_seq_exit(void)
    103{
    104	/* unregister our internal client */
    105	snd_seq_system_client_done();
    106
    107	/* unregister proc interface */
    108	snd_seq_info_done();
    109	
    110	/* delete timing queues */
    111	snd_seq_queues_delete();
    112
    113	/* unregister sequencer device */
    114	snd_sequencer_device_done();
    115
    116	snd_seq_autoload_exit();
    117}
    118
    119module_init(alsa_seq_init)
    120module_exit(alsa_seq_exit)