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/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Universal MIDI Packet (UMP) Support */ #ifndef __SOUND_UMP_H #define __SOUND_UMP_H #include <sound/rawmidi.h> struct snd_ump_endpoint; struct snd_ump_block; struct snd_ump_ops; struct ump_cvt_to_ump; struct snd_seq_ump_ops; struct snd_ump_group { int group; /* group index (0-based) */ unsigned int dir_bits; /* directions */ bool active; /* activeness */ bool valid; /* valid group (referred by blocks) */ bool is_midi1; /* belongs to a MIDI1 FB */ char name[64]; /* group name */ }; struct snd_ump_endpoint { struct snd_rawmidi core; /* raw UMP access */ struct snd_ump_endpoint_info info; const struct snd_ump_ops *ops; /* UMP ops set by the driver */ struct snd_rawmidi_substream *substreams[2]; /* opened substreams */ void *private_data; void (*private_free)(struct snd_ump_endpoint *ump); /* UMP Stream message processing */ u32 stream_wait_for; /* expected stream message status */ bool stream_finished; /* set when message has been processed */ bool parsed; /* UMP / FB parse finished? */ bool no_process_stream; /* suppress UMP stream messages handling */ wait_queue_head_t stream_wait; struct snd_rawmidi_file stream_rfile; struct list_head block_list; /* list of snd_ump_block objects */ /* intermediate buffer for UMP input */ u32 input_buf[4]; int input_buf_head; int input_pending; struct mutex open_mutex; struct snd_ump_group groups[SNDRV_UMP_MAX_GROUPS]; /* table of groups */ #if IS_ENABLED(CONFIG_SND_UMP_LEGACY_RAWMIDI) spinlock_t legacy_locks[2]; struct snd_rawmidi *legacy_rmidi; struct snd_rawmidi_substream *legacy_substreams[2][SNDRV_UMP_MAX_GROUPS]; unsigned char legacy_mapping[SNDRV_UMP_MAX_GROUPS]; /* for legacy output; need to open the actual substream unlike input */ int legacy_out_opens; struct snd_rawmidi_file legacy_out_rfile; struct ump_cvt_to_ump *out_cvts; #endif #if IS_ENABLED(CONFIG_SND_SEQUENCER) struct snd_seq_device *seq_dev; const struct snd_seq_ump_ops *seq_ops; void *seq_client; #endif }; /* ops filled by UMP drivers */ struct snd_ump_ops { int (*open)(struct snd_ump_endpoint *ump, int dir); void (*close)(struct snd_ump_endpoint *ump, int dir); void (*trigger)(struct snd_ump_endpoint *ump, int dir, int up); void (*drain)(struct snd_ump_endpoint *ump, int dir); }; /* ops filled by sequencer binding */ struct snd_seq_ump_ops { void (*input_receive)(struct snd_ump_endpoint *ump, const u32 *data, int words); int (*notify_ep_change)(struct snd_ump_endpoint *ump); int (*notify_fb_change)(struct snd_ump_endpoint *ump, struct snd_ump_block *fb); int (*switch_protocol)(struct snd_ump_endpoint *ump); }; struct snd_ump_block { struct snd_ump_block_info info; struct snd_ump_endpoint *ump; void *private_data; void (*private_free)(struct snd_ump_block *blk); struct list_head list; }; #define rawmidi_to_ump(rmidi) container_of(rmidi, struct snd_ump_endpoint, core) int snd_ump_endpoint_new(struct snd_card *card, char *id, int device, int output, int input, struct snd_ump_endpoint **ump_ret); int snd_ump_parse_endpoint(struct snd_ump_endpoint *ump); int snd_ump_block_new(struct snd_ump_endpoint *ump, unsigned int blk, unsigned int direction, unsigned int first_group, unsigned int num_groups, struct snd_ump_block **blk_ret); int snd_ump_receive(struct snd_ump_endpoint *ump, const u32 *buffer, int count); int snd_ump_transmit(struct snd_ump_endpoint *ump, u32 *buffer, int count); #if IS_ENABLED(CONFIG_SND_UMP_LEGACY_RAWMIDI) int snd_ump_attach_legacy_rawmidi(struct snd_ump_endpoint *ump, char *id, int device); #else static inline int snd_ump_attach_legacy_rawmidi(struct snd_ump_endpoint *ump, char *id, int device) { return 0; } #endif int snd_ump_receive_ump_val(struct snd_ump_endpoint *ump, u32 val); int snd_ump_switch_protocol(struct snd_ump_endpoint *ump, unsigned int protocol); void snd_ump_update_group_attrs(struct snd_ump_endpoint *ump); /* * Some definitions for UMP */ /* MIDI 2.0 Message Type */ enum { UMP_MSG_TYPE_UTILITY = 0x00, UMP_MSG_TYPE_SYSTEM = 0x01, UMP_MSG_TYPE_MIDI1_CHANNEL_VOICE = 0x02, UMP_MSG_TYPE_DATA = 0x03, UMP_MSG_TYPE_MIDI2_CHANNEL_VOICE = 0x04, UMP_MSG_TYPE_EXTENDED_DATA = 0x05, UMP_MSG_TYPE_FLEX_DATA = 0x0d, UMP_MSG_TYPE_STREAM = 0x0f, }; /* MIDI 2.0 SysEx / Data Status; same values for both 7-bit and 8-bit SysEx */ enum { UMP_SYSEX_STATUS_SINGLE = 0, UMP_SYSEX_STATUS_START = 1, UMP_SYSEX_STATUS_CONTINUE = 2, UMP_SYSEX_STATUS_END = 3, }; /* UMP Utility Type Status (type 0x0) */ enum { UMP_UTILITY_MSG_STATUS_NOOP = 0x00, UMP_UTILITY_MSG_STATUS_JR_CLOCK = 0x01, UMP_UTILITY_MSG_STATUS_JR_TSTAMP = 0x02, UMP_UTILITY_MSG_STATUS_DCTPQ = 0x03, UMP_UTILITY_MSG_STATUS_DC = 0x04, }; /* UMP Stream Message Status (type 0xf) */ enum { UMP_STREAM_MSG_STATUS_EP_DISCOVERY = 0x00, UMP_STREAM_MSG_STATUS_EP_INFO = 0x01, UMP_STREAM_MSG_STATUS_DEVICE_INFO = 0x02, UMP_STREAM_MSG_STATUS_EP_NAME = 0x03, UMP_STREAM_MSG_STATUS_PRODUCT_ID = 0x04, UMP_STREAM_MSG_STATUS_STREAM_CFG_REQUEST = 0x05, UMP_STREAM_MSG_STATUS_STREAM_CFG = 0x06, UMP_STREAM_MSG_STATUS_FB_DISCOVERY = 0x10, UMP_STREAM_MSG_STATUS_FB_INFO = 0x11, UMP_STREAM_MSG_STATUS_FB_NAME = 0x12, UMP_STREAM_MSG_STATUS_START_CLIP = 0x20, UMP_STREAM_MSG_STATUS_END_CLIP = 0x21, }; /* UMP Endpoint Discovery filter bitmap */ enum { UMP_STREAM_MSG_REQUEST_EP_INFO = (1U << 0), UMP_STREAM_MSG_REQUEST_DEVICE_INFO = (1U << 1), UMP_STREAM_MSG_REQUEST_EP_NAME = (1U << 2), UMP_STREAM_MSG_REQUEST_PRODUCT_ID = (1U << 3), UMP_STREAM_MSG_REQUEST_STREAM_CFG = (1U << 4), }; /* UMP Function Block Discovery filter bitmap */ enum { UMP_STREAM_MSG_REQUEST_FB_INFO = (1U << 0), UMP_STREAM_MSG_REQUEST_FB_NAME = (1U << 1), }; /* UMP Endpoint Info capability bits (used for protocol request/notify, too) */ enum { UMP_STREAM_MSG_EP_INFO_CAP_TXJR = (1U << 0), /* Sending JRTS */ UMP_STREAM_MSG_EP_INFO_CAP_RXJR = (1U << 1), /* Receiving JRTS */ UMP_STREAM_MSG_EP_INFO_CAP_MIDI1 = (1U << 8), /* MIDI 1.0 */ UMP_STREAM_MSG_EP_INFO_CAP_MIDI2 = (1U << 9), /* MIDI 2.0 */ }; /* UMP EP / FB name string format; same as SysEx string handling */ enum { UMP_STREAM_MSG_FORMAT_SINGLE = 0, UMP_STREAM_MSG_FORMAT_START = 1, UMP_STREAM_MSG_FORMAT_CONTINUE = 2, UMP_STREAM_MSG_FORMAT_END = 3, }; /* * Helpers for retrieving / filling bits from UMP */ /* get the message type (4bit) from a UMP packet (header) */ static inline unsigned char ump_message_type(u32 data) { return data >> 28; } /* get the group number (0-based, 4bit) from a UMP packet (header) */ static inline unsigned char ump_message_group(u32 data) { return (data >> 24) & 0x0f; } /* get the MIDI status code (4bit) from a UMP packet (header) */ static inline unsigned char ump_message_status_code(u32 data) { return (data >> 20) & 0x0f; } /* get the MIDI channel number (0-based, 4bit) from a UMP packet (header) */ static inline unsigned char ump_message_channel(u32 data) { return (data >> 16) & 0x0f; } /* get the MIDI status + channel combo byte (8bit) from a UMP packet (header) */ static inline unsigned char ump_message_status_channel(u32 data) { return (data >> 16) & 0xff; } /* compose a UMP packet (header) from type, group and status values */ static inline u32 ump_compose(unsigned char type, unsigned char group, unsigned char status, unsigned char channel) { return ((u32)type << 28) | ((u32)group << 24) | ((u32)status << 20) | ((u32)channel << 16); } /* get SysEx message status (for both 7 and 8bits) from a UMP packet (header) */ static inline unsigned char ump_sysex_message_status(u32 data) { return (data >> 20) & 0xf; } /* get SysEx message length (for both 7 and 8bits) from a UMP packet (header) */ static inline unsigned char ump_sysex_message_length(u32 data) { return (data >> 16) & 0xf; } /* For Stream Messages */ static inline unsigned char ump_stream_message_format(u32 data) { return (data >> 26) & 0x03; } static inline unsigned int ump_stream_message_status(u32 data) { return (data >> 16) & 0x3ff; } static inline u32 ump_stream_compose(unsigned char status, unsigned short form) { return (UMP_MSG_TYPE_STREAM << 28) | ((u32)form << 26) | ((u32)status << 16); } #define ump_is_groupless_msg(type) \ ((type) == UMP_MSG_TYPE_UTILITY || (type) == UMP_MSG_TYPE_STREAM) #endif /* __SOUND_UMP_H */