firewire.h (11015B) - Raw
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _SOUND_FIREWIRE_H_INCLUDED 3 #define _SOUND_FIREWIRE_H_INCLUDED 4 5 #include <linux/ioctl.h> 6 #include <linux/types.h> 7 8 /* events can be read() from the hwdep device */ 9 10 #define SNDRV_FIREWIRE_EVENT_LOCK_STATUS 0x000010cc 11 #define SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION 0xd1ce004e 12 #define SNDRV_FIREWIRE_EVENT_EFW_RESPONSE 0x4e617475 13 #define SNDRV_FIREWIRE_EVENT_DIGI00X_MESSAGE 0x746e736c 14 #define SNDRV_FIREWIRE_EVENT_MOTU_NOTIFICATION 0x64776479 15 #define SNDRV_FIREWIRE_EVENT_TASCAM_CONTROL 0x7473636d 16 #define SNDRV_FIREWIRE_EVENT_MOTU_REGISTER_DSP_CHANGE 0x4d545244 17 #define SNDRV_FIREWIRE_EVENT_FF400_MESSAGE 0x4f6c6761 18 19 struct snd_firewire_event_common { 20 unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */ 21 }; 22 23 struct snd_firewire_event_lock_status { 24 unsigned int type; 25 unsigned int status; /* 0/1 = unlocked/locked */ 26 }; 27 28 struct snd_firewire_event_dice_notification { 29 unsigned int type; 30 unsigned int notification; /* DICE-specific bits */ 31 }; 32 33 #define SND_EFW_TRANSACTION_USER_SEQNUM_MAX ((__u32)((__u16)~0) - 1) 34 /* each field should be in big endian */ 35 struct snd_efw_transaction { 36 __be32 length; 37 __be32 version; 38 __be32 seqnum; 39 __be32 category; 40 __be32 command; 41 __be32 status; 42 __be32 params[]; 43 }; 44 struct snd_firewire_event_efw_response { 45 unsigned int type; 46 __be32 response[]; /* some responses */ 47 }; 48 49 struct snd_firewire_event_digi00x_message { 50 unsigned int type; 51 __u32 message; /* Digi00x-specific message */ 52 }; 53 54 struct snd_firewire_event_motu_notification { 55 unsigned int type; 56 __u32 message; /* MOTU-specific bits. */ 57 }; 58 59 struct snd_firewire_tascam_change { 60 unsigned int index; 61 __be32 before; 62 __be32 after; 63 }; 64 65 struct snd_firewire_event_tascam_control { 66 unsigned int type; 67 struct snd_firewire_tascam_change changes[]; 68 }; 69 70 struct snd_firewire_event_motu_register_dsp_change { 71 unsigned int type; 72 __u32 count; /* The number of changes. */ 73 __u32 changes[]; /* Encoded event for change of register DSP. */ 74 }; 75 76 /** 77 * struct snd_firewire_event_ff400_message - the container for message from Fireface 400 when 78 * operating hardware knob. 79 * 80 * @type: Fixed to SNDRV_FIREWIRE_EVENT_FF400_MESSAGE. 81 * @message_count: The number of messages. 82 * @messages.message: The messages expressing hardware knob operation. 83 * @messages.tstamp: The isochronous cycle at which the request subaction of asynchronous 84 * transaction was sent to deliver the message. It has 16 bit unsigned integer 85 * value. The higher 3 bits of value expresses the lower three bits of second 86 * field in the format of CYCLE_TIME, up to 7. The rest 13 bits expresses cycle 87 * field up to 7999. 88 * 89 * The structure expresses message transmitted by Fireface 400 when operating hardware knob. 90 */ 91 struct snd_firewire_event_ff400_message { 92 unsigned int type; 93 unsigned int message_count; 94 struct { 95 __u32 message; 96 __u32 tstamp; 97 } messages[]; 98 }; 99 100 union snd_firewire_event { 101 struct snd_firewire_event_common common; 102 struct snd_firewire_event_lock_status lock_status; 103 struct snd_firewire_event_dice_notification dice_notification; 104 struct snd_firewire_event_efw_response efw_response; 105 struct snd_firewire_event_digi00x_message digi00x_message; 106 struct snd_firewire_event_tascam_control tascam_control; 107 struct snd_firewire_event_motu_notification motu_notification; 108 struct snd_firewire_event_motu_register_dsp_change motu_register_dsp_change; 109 struct snd_firewire_event_ff400_message ff400_message; 110 }; 111 112 113 #define SNDRV_FIREWIRE_IOCTL_GET_INFO _IOR('H', 0xf8, struct snd_firewire_get_info) 114 #define SNDRV_FIREWIRE_IOCTL_LOCK _IO('H', 0xf9) 115 #define SNDRV_FIREWIRE_IOCTL_UNLOCK _IO('H', 0xfa) 116 #define SNDRV_FIREWIRE_IOCTL_TASCAM_STATE _IOR('H', 0xfb, struct snd_firewire_tascam_state) 117 #define SNDRV_FIREWIRE_IOCTL_MOTU_REGISTER_DSP_METER _IOR('H', 0xfc, struct snd_firewire_motu_register_dsp_meter) 118 #define SNDRV_FIREWIRE_IOCTL_MOTU_COMMAND_DSP_METER _IOR('H', 0xfd, struct snd_firewire_motu_command_dsp_meter) 119 #define SNDRV_FIREWIRE_IOCTL_MOTU_REGISTER_DSP_PARAMETER _IOR('H', 0xfe, struct snd_firewire_motu_register_dsp_parameter) 120 121 #define SNDRV_FIREWIRE_TYPE_DICE 1 122 #define SNDRV_FIREWIRE_TYPE_FIREWORKS 2 123 #define SNDRV_FIREWIRE_TYPE_BEBOB 3 124 #define SNDRV_FIREWIRE_TYPE_OXFW 4 125 #define SNDRV_FIREWIRE_TYPE_DIGI00X 5 126 #define SNDRV_FIREWIRE_TYPE_TASCAM 6 127 #define SNDRV_FIREWIRE_TYPE_MOTU 7 128 #define SNDRV_FIREWIRE_TYPE_FIREFACE 8 129 130 struct snd_firewire_get_info { 131 unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */ 132 unsigned int card; /* same as fw_cdev_get_info.card */ 133 unsigned char guid[8]; 134 char device_name[16]; /* device node in /dev */ 135 }; 136 137 /* 138 * SNDRV_FIREWIRE_IOCTL_LOCK prevents the driver from streaming. 139 * Returns -EBUSY if the driver is already streaming. 140 */ 141 142 #define SNDRV_FIREWIRE_TASCAM_STATE_COUNT 64 143 144 struct snd_firewire_tascam_state { 145 __be32 data[SNDRV_FIREWIRE_TASCAM_STATE_COUNT]; 146 }; 147 148 /* 149 * In below MOTU models, software is allowed to control their DSP by accessing to registers. 150 * - 828mk2 151 * - 896hd 152 * - Traveler 153 * - 8 pre 154 * - Ultralite 155 * - 4 pre 156 * - Audio Express 157 * 158 * On the other hand, the status of DSP is split into specific messages included in the sequence of 159 * isochronous packet. ALSA firewire-motu driver gathers the messages and allow userspace applications 160 * to read it via ioctl. In 828mk2, 896hd, and Traveler, hardware meter for all of physical inputs 161 * are put into the message, while one pair of physical outputs is selected. The selection is done by 162 * LSB one byte in asynchronous write quadlet transaction to 0x'ffff'f000'0b2c. 163 * 164 * I note that V3HD/V4HD uses asynchronous transaction for the purpose. The destination address is 165 * registered to 0x'ffff'f000'0b38 and '0b3c by asynchronous write quadlet request. The size of 166 * message differs between 23 and 51 quadlets. For the case, the number of mixer bus can be extended 167 * up to 12. 168 */ 169 170 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_INPUT_COUNT 24 171 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_OUTPUT_COUNT 24 172 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_COUNT \ 173 (SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_INPUT_COUNT + SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_OUTPUT_COUNT) 174 175 /** 176 * struct snd_firewire_motu_register_dsp_meter - the container for meter information in DSP 177 * controlled by register access 178 * @data: Signal level meters. The mapping between position and input/output channel is 179 * model-dependent. 180 * 181 * The structure expresses the part of DSP status for hardware meter. The u8 storage includes linear 182 * value for audio signal level between 0x00 and 0x7f. 183 */ 184 struct snd_firewire_motu_register_dsp_meter { 185 __u8 data[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_COUNT]; 186 }; 187 188 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT 4 189 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT 20 190 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_INPUT_COUNT 10 191 #define SNDRV_FIREWIRE_MOTU_REGISTER_DSP_ALIGNED_INPUT_COUNT (SNDRV_FIREWIRE_MOTU_REGISTER_DSP_INPUT_COUNT + 2) 192 193 /** 194 * snd_firewire_motu_register_dsp_parameter - the container for parameters of DSP controlled 195 * by register access. 196 * @mixer.source.gain: The gain of source to mixer. 197 * @mixer.source.pan: The L/R balance of source to mixer. 198 * @mixer.source.flag: The flag of source to mixer, including mute, solo. 199 * @mixer.source.paired_balance: The L/R balance of paired source to mixer, only for 4 pre and 200 * Audio Express. 201 * @mixer.source.paired_width: The width of paired source to mixer, only for 4 pre and 202 * Audio Express. 203 * @mixer.output.paired_volume: The volume of paired output from mixer. 204 * @mixer.output.paired_flag: The flag of paired output from mixer. 205 * @output.main_paired_volume: The volume of paired main output. 206 * @output.hp_paired_volume: The volume of paired hp output. 207 * @output.hp_paired_assignment: The source assigned to paired hp output. 208 * @output.reserved: Padding for 32 bit alignment for future extension. 209 * @line_input.boost_flag: The flags of boost for line inputs, only for 828mk2 and Traveler. 210 * @line_input.nominal_level_flag: The flags of nominal level for line inputs, only for 828mk2 and 211 * Traveler. 212 * @line_input.reserved: Padding for 32 bit alignment for future extension. 213 * @input.gain_and_invert: The value including gain and invert for input, only for Ultralite, 4 pre 214 * and Audio Express. 215 * @input.flag: The flag of input; e.g. jack detection, phantom power, and pad, only for Ultralite, 216 * 4 pre and Audio express. 217 * @reserved: Padding so that the size of structure is kept to 512 byte, but for future extension. 218 * 219 * The structure expresses the set of parameters for DSP controlled by register access. 220 */ 221 struct snd_firewire_motu_register_dsp_parameter { 222 struct { 223 struct { 224 __u8 gain[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT]; 225 __u8 pan[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT]; 226 __u8 flag[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT]; 227 __u8 paired_balance[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT]; 228 __u8 paired_width[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT]; 229 } source[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT]; 230 struct { 231 __u8 paired_volume[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT]; 232 __u8 paired_flag[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT]; 233 } output; 234 } mixer; 235 struct { 236 __u8 main_paired_volume; 237 __u8 hp_paired_volume; 238 __u8 hp_paired_assignment; 239 __u8 reserved[5]; 240 } output; 241 struct { 242 __u8 boost_flag; 243 __u8 nominal_level_flag; 244 __u8 reserved[6]; 245 } line_input; 246 struct { 247 __u8 gain_and_invert[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_ALIGNED_INPUT_COUNT]; 248 __u8 flag[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_ALIGNED_INPUT_COUNT]; 249 } input; 250 __u8 reserved[64]; 251 }; 252 253 /* 254 * In below MOTU models, software is allowed to control their DSP by command in frame of 255 * asynchronous transaction to 0x'ffff'0001'0000: 256 * 257 * - 828 mk3 (FireWire only and Hybrid) 258 * - 896 mk3 (FireWire only and Hybrid) 259 * - Ultralite mk3 (FireWire only and Hybrid) 260 * - Traveler mk3 261 * - Track 16 262 * 263 * On the other hand, the states of hardware meter is split into specific messages included in the 264 * sequence of isochronous packet. ALSA firewire-motu driver gathers the message and allow userspace 265 * application to read it via ioctl. 266 */ 267 268 #define SNDRV_FIREWIRE_MOTU_COMMAND_DSP_METER_COUNT 400 269 270 /** 271 * struct snd_firewire_motu_command_dsp_meter - the container for meter information in DSP 272 * controlled by command 273 * @data: Signal level meters. The mapping between position and signal channel is model-dependent. 274 * 275 * The structure expresses the part of DSP status for hardware meter. The 32 bit storage is 276 * estimated to include IEEE 764 32 bit single precision floating point (binary32) value. It is 277 * expected to be linear value (not logarithm) for audio signal level between 0.0 and +1.0. 278 */ 279 struct snd_firewire_motu_command_dsp_meter { 280 float data[SNDRV_FIREWIRE_MOTU_COMMAND_DSP_METER_COUNT]; 281 }; 282 283 #endif /* _SOUND_FIREWIRE_H_INCLUDED */