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linux/sound/firewire/motu/motu.h
Takashi Sakamoto 0cac60c776 ALSA: firewire-lib: use circular linked list for context payload processing layer 
The list of packet descriptor is passed to context payload processing
layer so that each driver can copy PCM frames, MIDI messages, and device
specific data between packet payload buffer and intermediate buffer for
user space application.

The list of packet descriptor was replaced by circular linked list in a
previous commit. This commit uses circular linked in context payload
processing layer as well.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230109021738.75543-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-01-09 17:04:44 +01:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* motu.h - a part of driver for MOTU FireWire series
*
* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
*/
#ifndef SOUND_FIREWIRE_MOTU_H_INCLUDED
#define SOUND_FIREWIRE_MOTU_H_INCLUDED
#include <linux/device.h>
#include <linux/firewire.h>
#include <linux/firewire-constants.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/compat.h>
#include <linux/sched/signal.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/info.h>
#include <sound/rawmidi.h>
#include <sound/firewire.h>
#include <sound/hwdep.h>
#include "../lib.h"
#include "../amdtp-stream.h"
#include "../iso-resources.h"
struct snd_motu_packet_format {
unsigned char midi_flag_offset;
unsigned char midi_byte_offset;
unsigned char pcm_byte_offset;
unsigned char msg_chunks;
unsigned char pcm_chunks[3];
};
struct amdtp_motu_cache {
unsigned int *event_offsets;
unsigned int size;
unsigned int tail;
unsigned int tx_cycle_count;
unsigned int head;
unsigned int rx_cycle_count;
};
struct snd_motu {
struct snd_card *card;
struct fw_unit *unit;
struct mutex mutex;
spinlock_t lock;
/* Model dependent information. */
const struct snd_motu_spec *spec;
/* For packet streaming */
struct snd_motu_packet_format tx_packet_formats;
struct snd_motu_packet_format rx_packet_formats;
struct amdtp_stream tx_stream;
struct amdtp_stream rx_stream;
struct fw_iso_resources tx_resources;
struct fw_iso_resources rx_resources;
unsigned int substreams_counter;
/* For notification. */
struct fw_address_handler async_handler;
u32 msg;
/* For uapi */
int dev_lock_count;
bool dev_lock_changed;
wait_queue_head_t hwdep_wait;
struct snd_hwdep *hwdep;
struct amdtp_domain domain;
struct amdtp_motu_cache cache;
void *message_parser;
};
enum snd_motu_spec_flags {
SND_MOTU_SPEC_RX_MIDI_2ND_Q = 0x0001,
SND_MOTU_SPEC_RX_MIDI_3RD_Q = 0x0002,
SND_MOTU_SPEC_TX_MIDI_2ND_Q = 0x0004,
SND_MOTU_SPEC_TX_MIDI_3RD_Q = 0x0008,
SND_MOTU_SPEC_REGISTER_DSP = 0x0010,
SND_MOTU_SPEC_COMMAND_DSP = 0x0020,
};
#define SND_MOTU_CLOCK_RATE_COUNT 6
extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
enum snd_motu_clock_source {
SND_MOTU_CLOCK_SOURCE_INTERNAL,
SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB,
SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT,
SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A,
SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B,
SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT,
SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A,
SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B,
SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX,
SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR,
SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC,
SND_MOTU_CLOCK_SOURCE_SPH,
SND_MOTU_CLOCK_SOURCE_UNKNOWN,
};
enum snd_motu_protocol_version {
SND_MOTU_PROTOCOL_V1,
SND_MOTU_PROTOCOL_V2,
SND_MOTU_PROTOCOL_V3,
};
struct snd_motu_spec {
const char *const name;
enum snd_motu_protocol_version protocol_version;
// The combination of snd_motu_spec_flags enumeration-constants.
unsigned int flags;
unsigned char tx_fixed_pcm_chunks[3];
unsigned char rx_fixed_pcm_chunks[3];
};
extern const struct snd_motu_spec snd_motu_spec_828;
extern const struct snd_motu_spec snd_motu_spec_896;
extern const struct snd_motu_spec snd_motu_spec_828mk2;
extern const struct snd_motu_spec snd_motu_spec_896hd;
extern const struct snd_motu_spec snd_motu_spec_traveler;
extern const struct snd_motu_spec snd_motu_spec_ultralite;
extern const struct snd_motu_spec snd_motu_spec_8pre;
extern const struct snd_motu_spec snd_motu_spec_828mk3_fw;
extern const struct snd_motu_spec snd_motu_spec_828mk3_hybrid;
extern const struct snd_motu_spec snd_motu_spec_traveler_mk3;
extern const struct snd_motu_spec snd_motu_spec_ultralite_mk3;
extern const struct snd_motu_spec snd_motu_spec_audio_express;
extern const struct snd_motu_spec snd_motu_spec_track16;
extern const struct snd_motu_spec snd_motu_spec_4pre;
int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir,
const struct snd_motu_spec *spec,
struct amdtp_motu_cache *cache);
int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
unsigned int midi_ports,
struct snd_motu_packet_format *formats);
int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
struct snd_pcm_runtime *runtime);
void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
struct snd_rawmidi_substream *midi);
int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
size_t size);
int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
size_t size);
int snd_motu_transaction_register(struct snd_motu *motu);
int snd_motu_transaction_reregister(struct snd_motu *motu);
void snd_motu_transaction_unregister(struct snd_motu *motu);
int snd_motu_stream_init_duplex(struct snd_motu *motu);
void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
unsigned int frames_per_period,
unsigned int frames_per_buffer);
int snd_motu_stream_start_duplex(struct snd_motu *motu);
void snd_motu_stream_stop_duplex(struct snd_motu *motu);
int snd_motu_stream_lock_try(struct snd_motu *motu);
void snd_motu_stream_lock_release(struct snd_motu *motu);
void snd_motu_proc_init(struct snd_motu *motu);
int snd_motu_create_pcm_devices(struct snd_motu *motu);
int snd_motu_create_midi_devices(struct snd_motu *motu);
int snd_motu_create_hwdep_device(struct snd_motu *motu);
int snd_motu_protocol_v1_get_clock_rate(struct snd_motu *motu,
unsigned int *rate);
int snd_motu_protocol_v1_set_clock_rate(struct snd_motu *motu,
unsigned int rate);
int snd_motu_protocol_v1_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *src);
int snd_motu_protocol_v1_switch_fetching_mode(struct snd_motu *motu,
bool enable);
int snd_motu_protocol_v1_cache_packet_formats(struct snd_motu *motu);
int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
unsigned int *rate);
int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
unsigned int rate);
int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *src);
int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
bool enable);
int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu);
int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu,
unsigned int *rate);
int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
unsigned int rate);
int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *src);
int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
bool enable);
int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu);
static inline int snd_motu_protocol_get_clock_rate(struct snd_motu *motu,
unsigned int *rate)
{
if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
return snd_motu_protocol_v2_get_clock_rate(motu, rate);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
return snd_motu_protocol_v3_get_clock_rate(motu, rate);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
return snd_motu_protocol_v1_get_clock_rate(motu, rate);
else
return -ENXIO;
}
static inline int snd_motu_protocol_set_clock_rate(struct snd_motu *motu,
unsigned int rate)
{
if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
return snd_motu_protocol_v2_set_clock_rate(motu, rate);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
return snd_motu_protocol_v3_set_clock_rate(motu, rate);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
return snd_motu_protocol_v1_set_clock_rate(motu, rate);
else
return -ENXIO;
}
static inline int snd_motu_protocol_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *source)
{
if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
return snd_motu_protocol_v2_get_clock_source(motu, source);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
return snd_motu_protocol_v3_get_clock_source(motu, source);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
return snd_motu_protocol_v1_get_clock_source(motu, source);
else
return -ENXIO;
}
static inline int snd_motu_protocol_switch_fetching_mode(struct snd_motu *motu,
bool enable)
{
if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
return snd_motu_protocol_v2_switch_fetching_mode(motu, enable);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
return snd_motu_protocol_v3_switch_fetching_mode(motu, enable);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
return snd_motu_protocol_v1_switch_fetching_mode(motu, enable);
else
return -ENXIO;
}
static inline int snd_motu_protocol_cache_packet_formats(struct snd_motu *motu)
{
if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
return snd_motu_protocol_v2_cache_packet_formats(motu);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
return snd_motu_protocol_v3_cache_packet_formats(motu);
else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
return snd_motu_protocol_v1_cache_packet_formats(motu);
else
return -ENXIO;
}
int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu);
int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu);
void snd_motu_register_dsp_message_parser_parse(const struct amdtp_stream *s,
const struct pkt_desc *descs, unsigned int count);
void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu,
struct snd_firewire_motu_register_dsp_meter *meter);
void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu,
struct snd_firewire_motu_register_dsp_parameter *params);
unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu);
bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event);
int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu);
int snd_motu_command_dsp_message_parser_init(struct snd_motu *motu, enum cip_sfc sfc);
void snd_motu_command_dsp_message_parser_parse(const struct amdtp_stream *s,
const struct pkt_desc *descs, unsigned int count);
void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu,
struct snd_firewire_motu_command_dsp_meter *meter);
#endif
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