diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/firewire/tascam/Makefile | 5 | ||||
| -rw-r--r-- | sound/firewire/tascam/amdtp-tascam.c | 261 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam-hwdep.c | 277 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam-midi.c | 135 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam-pcm.c | 289 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam-proc.c | 79 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam-stream.c | 545 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam-transaction.c | 399 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam.c | 272 | ||||
| -rw-r--r-- | sound/firewire/tascam/tascam.h | 213 |
10 files changed, 2475 insertions, 0 deletions
diff --git a/sound/firewire/tascam/Makefile b/sound/firewire/tascam/Makefile new file mode 100644 index 000000000..a1d21f244 --- /dev/null +++ b/sound/firewire/tascam/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0-only +snd-firewire-tascam-objs := tascam-proc.o amdtp-tascam.o tascam-stream.o \ + tascam-pcm.o tascam-hwdep.o tascam-transaction.o \ + tascam-midi.o tascam.o +obj-$(CONFIG_SND_FIREWIRE_TASCAM) += snd-firewire-tascam.o diff --git a/sound/firewire/tascam/amdtp-tascam.c b/sound/firewire/tascam/amdtp-tascam.c new file mode 100644 index 000000000..f823a2ab3 --- /dev/null +++ b/sound/firewire/tascam/amdtp-tascam.c @@ -0,0 +1,261 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * amdtp-tascam.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include <sound/pcm.h> +#include "tascam.h" + +#define AMDTP_FMT_TSCM_TX 0x1e +#define AMDTP_FMT_TSCM_RX 0x3e + +struct amdtp_tscm { + unsigned int pcm_channels; +}; + +int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate) +{ + struct amdtp_tscm *p = s->protocol; + unsigned int data_channels; + + if (amdtp_stream_running(s)) + return -EBUSY; + + data_channels = p->pcm_channels; + + /* Packets in in-stream have extra 2 data channels. */ + if (s->direction == AMDTP_IN_STREAM) + data_channels += 2; + + return amdtp_stream_set_parameters(s, rate, data_channels); +} + +static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm, + __be32 *buffer, unsigned int frames, + unsigned int pcm_frames) +{ + struct amdtp_tscm *p = s->protocol; + unsigned int channels = p->pcm_channels; + struct snd_pcm_runtime *runtime = pcm->runtime; + unsigned int pcm_buffer_pointer; + int remaining_frames; + const u32 *src; + int i, c; + + pcm_buffer_pointer = s->pcm_buffer_pointer + pcm_frames; + pcm_buffer_pointer %= runtime->buffer_size; + + src = (void *)runtime->dma_area + + frames_to_bytes(runtime, pcm_buffer_pointer); + remaining_frames = runtime->buffer_size - pcm_buffer_pointer; + + for (i = 0; i < frames; ++i) { + for (c = 0; c < channels; ++c) { + buffer[c] = cpu_to_be32(*src); + src++; + } + buffer += s->data_block_quadlets; + if (--remaining_frames == 0) + src = (void *)runtime->dma_area; + } +} + +static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm, + __be32 *buffer, unsigned int frames, + unsigned int pcm_frames) +{ + struct amdtp_tscm *p = s->protocol; + unsigned int channels = p->pcm_channels; + struct snd_pcm_runtime *runtime = pcm->runtime; + unsigned int pcm_buffer_pointer; + int remaining_frames; + u32 *dst; + int i, c; + + pcm_buffer_pointer = s->pcm_buffer_pointer + pcm_frames; + pcm_buffer_pointer %= runtime->buffer_size; + + dst = (void *)runtime->dma_area + + frames_to_bytes(runtime, pcm_buffer_pointer); + remaining_frames = runtime->buffer_size - pcm_buffer_pointer; + + /* The first data channel is for event counter. */ + buffer += 1; + + for (i = 0; i < frames; ++i) { + for (c = 0; c < channels; ++c) { + *dst = be32_to_cpu(buffer[c]); + dst++; + } + buffer += s->data_block_quadlets; + if (--remaining_frames == 0) + dst = (void *)runtime->dma_area; + } +} + +static void write_pcm_silence(struct amdtp_stream *s, __be32 *buffer, + unsigned int data_blocks) +{ + struct amdtp_tscm *p = s->protocol; + unsigned int channels, i, c; + + channels = p->pcm_channels; + + for (i = 0; i < data_blocks; ++i) { + for (c = 0; c < channels; ++c) + buffer[c] = 0x00000000; + buffer += s->data_block_quadlets; + } +} + +int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s, + struct snd_pcm_runtime *runtime) +{ + int err; + + /* + * Our implementation allows this protocol to deliver 24 bit sample in + * 32bit data channel. + */ + err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24); + if (err < 0) + return err; + + return amdtp_stream_add_pcm_hw_constraints(s, runtime); +} + +static void read_status_messages(struct amdtp_stream *s, + __be32 *buffer, unsigned int data_blocks) +{ + struct snd_tscm *tscm = container_of(s, struct snd_tscm, tx_stream); + bool used = READ_ONCE(tscm->hwdep->used); + int i; + + for (i = 0; i < data_blocks; i++) { + unsigned int index; + __be32 before; + __be32 after; + + index = be32_to_cpu(buffer[0]) % SNDRV_FIREWIRE_TASCAM_STATE_COUNT; + before = tscm->state[index]; + after = buffer[s->data_block_quadlets - 1]; + + if (used && index > 4 && index < 16) { + __be32 mask; + + if (index == 5) + mask = cpu_to_be32(~0x0000ffff); + else if (index == 6) + mask = cpu_to_be32(~0x0000ffff); + else if (index == 8) + mask = cpu_to_be32(~0x000f0f00); + else + mask = cpu_to_be32(~0x00000000); + + if ((before ^ after) & mask) { + struct snd_firewire_tascam_change *entry = + &tscm->queue[tscm->push_pos]; + unsigned long flag; + + spin_lock_irqsave(&tscm->lock, flag); + entry->index = index; + entry->before = before; + entry->after = after; + if (++tscm->push_pos >= SND_TSCM_QUEUE_COUNT) + tscm->push_pos = 0; + spin_unlock_irqrestore(&tscm->lock, flag); + + wake_up(&tscm->hwdep_wait); + } + } + + tscm->state[index] = after; + buffer += s->data_block_quadlets; + } +} + +static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s, + const struct pkt_desc *descs, + unsigned int packets, + struct snd_pcm_substream *pcm) +{ + unsigned int pcm_frames = 0; + int i; + + for (i = 0; i < packets; ++i) { + const struct pkt_desc *desc = descs + i; + __be32 *buf = desc->ctx_payload; + unsigned int data_blocks = desc->data_blocks; + + if (pcm) { + read_pcm_s32(s, pcm, buf, data_blocks, pcm_frames); + pcm_frames += data_blocks; + } + + read_status_messages(s, buf, data_blocks); + } + + return pcm_frames; +} + +static unsigned int process_it_ctx_payloads(struct amdtp_stream *s, + const struct pkt_desc *descs, + unsigned int packets, + struct snd_pcm_substream *pcm) +{ + unsigned int pcm_frames = 0; + int i; + + for (i = 0; i < packets; ++i) { + const struct pkt_desc *desc = descs + i; + __be32 *buf = desc->ctx_payload; + unsigned int data_blocks = desc->data_blocks; + + if (pcm) { + write_pcm_s32(s, pcm, buf, data_blocks, pcm_frames); + pcm_frames += data_blocks; + } else { + write_pcm_silence(s, buf, data_blocks); + } + } + + return pcm_frames; +} + +int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit, + enum amdtp_stream_direction dir, unsigned int pcm_channels) +{ + amdtp_stream_process_ctx_payloads_t process_ctx_payloads; + struct amdtp_tscm *p; + unsigned int fmt; + int err; + + if (dir == AMDTP_IN_STREAM) { + fmt = AMDTP_FMT_TSCM_TX; + process_ctx_payloads = process_ir_ctx_payloads; + } else { + fmt = AMDTP_FMT_TSCM_RX; + process_ctx_payloads = process_it_ctx_payloads; + } + + err = amdtp_stream_init(s, unit, dir, + CIP_NONBLOCKING | CIP_SKIP_DBC_ZERO_CHECK, fmt, + process_ctx_payloads, sizeof(struct amdtp_tscm)); + if (err < 0) + return 0; + + if (dir == AMDTP_OUT_STREAM) { + // Use fixed value for FDF field. + s->ctx_data.rx.fdf = 0x00; + // Not used. + s->ctx_data.rx.syt_override = 0x0000; + } + + /* This protocol uses fixed number of data channels for PCM samples. */ + p = s->protocol; + p->pcm_channels = pcm_channels; + + return 0; +} diff --git a/sound/firewire/tascam/tascam-hwdep.c b/sound/firewire/tascam/tascam-hwdep.c new file mode 100644 index 000000000..6f38335fe --- /dev/null +++ b/sound/firewire/tascam/tascam-hwdep.c @@ -0,0 +1,277 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam-hwdep.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +/* + * This codes give three functionality. + * + * 1.get firewire node information + * 2.get notification about starting/stopping stream + * 3.lock/unlock stream + */ + +#include "tascam.h" + +static long tscm_hwdep_read_locked(struct snd_tscm *tscm, char __user *buf, + long count, loff_t *offset) + __releases(&tscm->lock) +{ + struct snd_firewire_event_lock_status event = { + .type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS, + }; + + event.status = (tscm->dev_lock_count > 0); + tscm->dev_lock_changed = false; + count = min_t(long, count, sizeof(event)); + + spin_unlock_irq(&tscm->lock); + + if (copy_to_user(buf, &event, count)) + return -EFAULT; + + return count; +} + +static long tscm_hwdep_read_queue(struct snd_tscm *tscm, char __user *buf, + long remained, loff_t *offset) + __releases(&tscm->lock) +{ + char __user *pos = buf; + unsigned int type = SNDRV_FIREWIRE_EVENT_TASCAM_CONTROL; + struct snd_firewire_tascam_change *entries = tscm->queue; + long count; + + // At least, one control event can be copied. + if (remained < sizeof(type) + sizeof(*entries)) { + spin_unlock_irq(&tscm->lock); + return -EINVAL; + } + + // Copy the type field later. + count = sizeof(type); + remained -= sizeof(type); + pos += sizeof(type); + + while (true) { + unsigned int head_pos; + unsigned int tail_pos; + unsigned int length; + + if (tscm->pull_pos == tscm->push_pos) + break; + else if (tscm->pull_pos < tscm->push_pos) + tail_pos = tscm->push_pos; + else + tail_pos = SND_TSCM_QUEUE_COUNT; + head_pos = tscm->pull_pos; + + length = (tail_pos - head_pos) * sizeof(*entries); + if (remained < length) + length = rounddown(remained, sizeof(*entries)); + if (length == 0) + break; + + spin_unlock_irq(&tscm->lock); + if (copy_to_user(pos, &entries[head_pos], length)) + return -EFAULT; + + spin_lock_irq(&tscm->lock); + + tscm->pull_pos = tail_pos % SND_TSCM_QUEUE_COUNT; + + count += length; + remained -= length; + pos += length; + } + + spin_unlock_irq(&tscm->lock); + + if (copy_to_user(buf, &type, sizeof(type))) + return -EFAULT; + + return count; +} + +static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, + loff_t *offset) +{ + struct snd_tscm *tscm = hwdep->private_data; + DEFINE_WAIT(wait); + + spin_lock_irq(&tscm->lock); + + while (!tscm->dev_lock_changed && tscm->push_pos == tscm->pull_pos) { + prepare_to_wait(&tscm->hwdep_wait, &wait, TASK_INTERRUPTIBLE); + spin_unlock_irq(&tscm->lock); + schedule(); + finish_wait(&tscm->hwdep_wait, &wait); + if (signal_pending(current)) + return -ERESTARTSYS; + spin_lock_irq(&tscm->lock); + } + + // NOTE: The acquired lock should be released in callee side. + if (tscm->dev_lock_changed) { + count = tscm_hwdep_read_locked(tscm, buf, count, offset); + } else if (tscm->push_pos != tscm->pull_pos) { + count = tscm_hwdep_read_queue(tscm, buf, count, offset); + } else { + spin_unlock_irq(&tscm->lock); + count = 0; + } + + return count; +} + +static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file, + poll_table *wait) +{ + struct snd_tscm *tscm = hwdep->private_data; + __poll_t events; + + poll_wait(file, &tscm->hwdep_wait, wait); + + spin_lock_irq(&tscm->lock); + if (tscm->dev_lock_changed || tscm->push_pos != tscm->pull_pos) + events = EPOLLIN | EPOLLRDNORM; + else + events = 0; + spin_unlock_irq(&tscm->lock); + + return events; +} + +static int hwdep_get_info(struct snd_tscm *tscm, void __user *arg) +{ + struct fw_device *dev = fw_parent_device(tscm->unit); + struct snd_firewire_get_info info; + + memset(&info, 0, sizeof(info)); + info.type = SNDRV_FIREWIRE_TYPE_TASCAM; + info.card = dev->card->index; + *(__be32 *)&info.guid[0] = cpu_to_be32(dev->config_rom[3]); + *(__be32 *)&info.guid[4] = cpu_to_be32(dev->config_rom[4]); + strlcpy(info.device_name, dev_name(&dev->device), + sizeof(info.device_name)); + + if (copy_to_user(arg, &info, sizeof(info))) + return -EFAULT; + + return 0; +} + +static int hwdep_lock(struct snd_tscm *tscm) +{ + int err; + + spin_lock_irq(&tscm->lock); + + if (tscm->dev_lock_count == 0) { + tscm->dev_lock_count = -1; + err = 0; + } else { + err = -EBUSY; + } + + spin_unlock_irq(&tscm->lock); + + return err; +} + +static int hwdep_unlock(struct snd_tscm *tscm) +{ + int err; + + spin_lock_irq(&tscm->lock); + + if (tscm->dev_lock_count == -1) { + tscm->dev_lock_count = 0; + err = 0; + } else { + err = -EBADFD; + } + + spin_unlock_irq(&tscm->lock); + + return err; +} + +static int tscm_hwdep_state(struct snd_tscm *tscm, void __user *arg) +{ + if (copy_to_user(arg, tscm->state, sizeof(tscm->state))) + return -EFAULT; + + return 0; +} + +static int hwdep_release(struct snd_hwdep *hwdep, struct file *file) +{ + struct snd_tscm *tscm = hwdep->private_data; + + spin_lock_irq(&tscm->lock); + if (tscm->dev_lock_count == -1) + tscm->dev_lock_count = 0; + spin_unlock_irq(&tscm->lock); + + return 0; +} + +static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct snd_tscm *tscm = hwdep->private_data; + + switch (cmd) { + case SNDRV_FIREWIRE_IOCTL_GET_INFO: + return hwdep_get_info(tscm, (void __user *)arg); + case SNDRV_FIREWIRE_IOCTL_LOCK: + return hwdep_lock(tscm); + case SNDRV_FIREWIRE_IOCTL_UNLOCK: + return hwdep_unlock(tscm); + case SNDRV_FIREWIRE_IOCTL_TASCAM_STATE: + return tscm_hwdep_state(tscm, (void __user *)arg); + default: + return -ENOIOCTLCMD; + } +} + +#ifdef CONFIG_COMPAT +static int hwdep_compat_ioctl(struct snd_hwdep *hwdep, struct file *file, + unsigned int cmd, unsigned long arg) +{ + return hwdep_ioctl(hwdep, file, cmd, + (unsigned long)compat_ptr(arg)); +} +#else +#define hwdep_compat_ioctl NULL +#endif + +int snd_tscm_create_hwdep_device(struct snd_tscm *tscm) +{ + static const struct snd_hwdep_ops ops = { + .read = hwdep_read, + .release = hwdep_release, + .poll = hwdep_poll, + .ioctl = hwdep_ioctl, + .ioctl_compat = hwdep_compat_ioctl, + }; + struct snd_hwdep *hwdep; + int err; + + err = snd_hwdep_new(tscm->card, "Tascam", 0, &hwdep); + if (err < 0) + return err; + + strcpy(hwdep->name, "Tascam"); + hwdep->iface = SNDRV_HWDEP_IFACE_FW_TASCAM; + hwdep->ops = ops; + hwdep->private_data = tscm; + hwdep->exclusive = true; + + tscm->hwdep = hwdep; + + return err; +} diff --git a/sound/firewire/tascam/tascam-midi.c b/sound/firewire/tascam/tascam-midi.c new file mode 100644 index 000000000..02eed2dce --- /dev/null +++ b/sound/firewire/tascam/tascam-midi.c @@ -0,0 +1,135 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam-midi.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include "tascam.h" + +static int midi_capture_open(struct snd_rawmidi_substream *substream) +{ + /* Do nothing. */ + return 0; +} + +static int midi_playback_open(struct snd_rawmidi_substream *substream) +{ + struct snd_tscm *tscm = substream->rmidi->private_data; + + snd_fw_async_midi_port_init(&tscm->out_ports[substream->number]); + + return 0; +} + +static int midi_capture_close(struct snd_rawmidi_substream *substream) +{ + /* Do nothing. */ + return 0; +} + +static int midi_playback_close(struct snd_rawmidi_substream *substream) +{ + return 0; +} + +static void midi_playback_drain(struct snd_rawmidi_substream *substream) +{ + struct snd_tscm *tscm = substream->rmidi->private_data; + + snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]); +} + +static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up) +{ + struct snd_tscm *tscm = substrm->rmidi->private_data; + unsigned long flags; + + spin_lock_irqsave(&tscm->lock, flags); + + if (up) + tscm->tx_midi_substreams[substrm->number] = substrm; + else + tscm->tx_midi_substreams[substrm->number] = NULL; + + spin_unlock_irqrestore(&tscm->lock, flags); +} + +static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up) +{ + struct snd_tscm *tscm = substrm->rmidi->private_data; + unsigned long flags; + + spin_lock_irqsave(&tscm->lock, flags); + + if (up) + snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number], + substrm); + + spin_unlock_irqrestore(&tscm->lock, flags); +} + +int snd_tscm_create_midi_devices(struct snd_tscm *tscm) +{ + static const struct snd_rawmidi_ops capture_ops = { + .open = midi_capture_open, + .close = midi_capture_close, + .trigger = midi_capture_trigger, + }; + static const struct snd_rawmidi_ops playback_ops = { + .open = midi_playback_open, + .close = midi_playback_close, + .drain = midi_playback_drain, + .trigger = midi_playback_trigger, + }; + struct snd_rawmidi *rmidi; + struct snd_rawmidi_str *stream; + struct snd_rawmidi_substream *subs; + int err; + + err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0, + tscm->spec->midi_playback_ports, + tscm->spec->midi_capture_ports, + &rmidi); + if (err < 0) + return err; + + snprintf(rmidi->name, sizeof(rmidi->name), + "%s MIDI", tscm->card->shortname); + rmidi->private_data = tscm; + + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, + &capture_ops); + stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]; + + /* Set port names for MIDI input. */ + list_for_each_entry(subs, &stream->substreams, list) { + /* TODO: support virtual MIDI ports. */ + if (subs->number < tscm->spec->midi_capture_ports) { + /* Hardware MIDI ports. */ + snprintf(subs->name, sizeof(subs->name), + "%s MIDI %d", + tscm->card->shortname, subs->number + 1); + } + } + + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, + &playback_ops); + stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]; + + /* Set port names for MIDI ourput. */ + list_for_each_entry(subs, &stream->substreams, list) { + if (subs->number < tscm->spec->midi_playback_ports) { + /* Hardware MIDI ports only. */ + snprintf(subs->name, sizeof(subs->name), + "%s MIDI %d", + tscm->card->shortname, subs->number + 1); + } + } + + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX; + + return 0; +} diff --git a/sound/firewire/tascam/tascam-pcm.c b/sound/firewire/tascam/tascam-pcm.c new file mode 100644 index 000000000..36c1353f2 --- /dev/null +++ b/sound/firewire/tascam/tascam-pcm.c @@ -0,0 +1,289 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam-pcm.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include "tascam.h" + +static int pcm_init_hw_params(struct snd_tscm *tscm, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_pcm_hardware *hw = &runtime->hw; + struct amdtp_stream *stream; + unsigned int pcm_channels; + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; + stream = &tscm->tx_stream; + pcm_channels = tscm->spec->pcm_capture_analog_channels; + } else { + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; + stream = &tscm->rx_stream; + pcm_channels = tscm->spec->pcm_playback_analog_channels; + } + + if (tscm->spec->has_adat) + pcm_channels += 8; + if (tscm->spec->has_spdif) + pcm_channels += 2; + runtime->hw.channels_min = runtime->hw.channels_max = pcm_channels; + + hw->rates = SNDRV_PCM_RATE_44100 | + SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_88200 | + SNDRV_PCM_RATE_96000; + snd_pcm_limit_hw_rates(runtime); + + return amdtp_tscm_add_pcm_hw_constraints(stream, runtime); +} + +static int pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + struct amdtp_domain *d = &tscm->domain; + enum snd_tscm_clock clock; + int err; + + err = snd_tscm_stream_lock_try(tscm); + if (err < 0) + return err; + + err = pcm_init_hw_params(tscm, substream); + if (err < 0) + goto err_locked; + + err = snd_tscm_stream_get_clock(tscm, &clock); + if (err < 0) + goto err_locked; + + mutex_lock(&tscm->mutex); + + // When source of clock is not internal or any stream is reserved for + // transmission of PCM frames, the available sampling rate is limited + // at current one. + if (clock != SND_TSCM_CLOCK_INTERNAL || tscm->substreams_counter > 0) { + unsigned int frames_per_period = d->events_per_period; + unsigned int frames_per_buffer = d->events_per_buffer; + unsigned int rate; + + err = snd_tscm_stream_get_rate(tscm, &rate); + if (err < 0) { + mutex_unlock(&tscm->mutex); + goto err_locked; + } + substream->runtime->hw.rate_min = rate; + substream->runtime->hw.rate_max = rate; + + err = snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, + frames_per_period, frames_per_period); + if (err < 0) { + mutex_unlock(&tscm->mutex); + goto err_locked; + } + + err = snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_BUFFER_SIZE, + frames_per_buffer, frames_per_buffer); + if (err < 0) { + mutex_unlock(&tscm->mutex); + goto err_locked; + } + } + + mutex_unlock(&tscm->mutex); + + snd_pcm_set_sync(substream); + + return 0; +err_locked: + snd_tscm_stream_lock_release(tscm); + return err; +} + +static int pcm_close(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + + snd_tscm_stream_lock_release(tscm); + + return 0; +} + +static int pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_tscm *tscm = substream->private_data; + int err = 0; + + if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { + unsigned int rate = params_rate(hw_params); + unsigned int frames_per_period = params_period_size(hw_params); + unsigned int frames_per_buffer = params_buffer_size(hw_params); + + mutex_lock(&tscm->mutex); + err = snd_tscm_stream_reserve_duplex(tscm, rate, + frames_per_period, frames_per_buffer); + if (err >= 0) + ++tscm->substreams_counter; + mutex_unlock(&tscm->mutex); + } + + return err; +} + +static int pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + + mutex_lock(&tscm->mutex); + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + --tscm->substreams_counter; + + snd_tscm_stream_stop_duplex(tscm); + + mutex_unlock(&tscm->mutex); + + return 0; +} + +static int pcm_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + mutex_lock(&tscm->mutex); + + err = snd_tscm_stream_start_duplex(tscm, runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&tscm->tx_stream); + + mutex_unlock(&tscm->mutex); + + return err; +} + +static int pcm_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + mutex_lock(&tscm->mutex); + + err = snd_tscm_stream_start_duplex(tscm, runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&tscm->rx_stream); + + mutex_unlock(&tscm->mutex); + + return err; +} + +static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_tscm *tscm = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&tscm->tx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&tscm->tx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_tscm *tscm = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&tscm->rx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&tscm->rx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_tscm *tscm = sbstrm->private_data; + + return amdtp_domain_stream_pcm_pointer(&tscm->domain, &tscm->tx_stream); +} + +static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_tscm *tscm = sbstrm->private_data; + + return amdtp_domain_stream_pcm_pointer(&tscm->domain, &tscm->rx_stream); +} + +static int pcm_capture_ack(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + + return amdtp_domain_stream_pcm_ack(&tscm->domain, &tscm->tx_stream); +} + +static int pcm_playback_ack(struct snd_pcm_substream *substream) +{ + struct snd_tscm *tscm = substream->private_data; + + return amdtp_domain_stream_pcm_ack(&tscm->domain, &tscm->rx_stream); +} + +int snd_tscm_create_pcm_devices(struct snd_tscm *tscm) +{ + static const struct snd_pcm_ops capture_ops = { + .open = pcm_open, + .close = pcm_close, + .hw_params = pcm_hw_params, + .hw_free = pcm_hw_free, + .prepare = pcm_capture_prepare, + .trigger = pcm_capture_trigger, + .pointer = pcm_capture_pointer, + .ack = pcm_capture_ack, + }; + static const struct snd_pcm_ops playback_ops = { + .open = pcm_open, + .close = pcm_close, + .hw_params = pcm_hw_params, + .hw_free = pcm_hw_free, + .prepare = pcm_playback_prepare, + .trigger = pcm_playback_trigger, + .pointer = pcm_playback_pointer, + .ack = pcm_playback_ack, + }; + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(tscm->card, tscm->card->driver, 0, 1, 1, &pcm); + if (err < 0) + return err; + + pcm->private_data = tscm; + snprintf(pcm->name, sizeof(pcm->name), + "%s PCM", tscm->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0); + + return 0; +} diff --git a/sound/firewire/tascam/tascam-proc.c b/sound/firewire/tascam/tascam-proc.c new file mode 100644 index 000000000..53846aeff --- /dev/null +++ b/sound/firewire/tascam/tascam-proc.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam-proc.h - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include "./tascam.h" + +static void proc_read_firmware(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_tscm *tscm = entry->private_data; + __be32 data; + unsigned int reg, fpga, arm, hw; + int err; + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER, + &data, sizeof(data), 0); + if (err < 0) + return; + reg = be32_to_cpu(data); + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA, + &data, sizeof(data), 0); + if (err < 0) + return; + fpga = be32_to_cpu(data); + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM, + &data, sizeof(data), 0); + if (err < 0) + return; + arm = be32_to_cpu(data); + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW, + &data, sizeof(data), 0); + if (err < 0) + return; + hw = be32_to_cpu(data); + + snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg); + snd_iprintf(buffer, "FPGA: %d (0x%08x)\n", fpga & 0xffff, fpga); + snd_iprintf(buffer, "ARM: %d (0x%08x)\n", arm & 0xffff, arm); + snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw); +} + +static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root, + const char *name, + void (*op)(struct snd_info_entry *e, + struct snd_info_buffer *b)) +{ + struct snd_info_entry *entry; + + entry = snd_info_create_card_entry(tscm->card, name, root); + if (entry) + snd_info_set_text_ops(entry, tscm, op); +} + +void snd_tscm_proc_init(struct snd_tscm *tscm) +{ + struct snd_info_entry *root; + + /* + * All nodes are automatically removed at snd_card_disconnect(), + * by following to link list. + */ + root = snd_info_create_card_entry(tscm->card, "firewire", + tscm->card->proc_root); + if (root == NULL) + return; + root->mode = S_IFDIR | 0555; + + add_node(tscm, root, "firmware", proc_read_firmware); +} diff --git a/sound/firewire/tascam/tascam-stream.c b/sound/firewire/tascam/tascam-stream.c new file mode 100644 index 000000000..47de9727a --- /dev/null +++ b/sound/firewire/tascam/tascam-stream.c @@ -0,0 +1,545 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam-stream.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include <linux/delay.h> +#include "tascam.h" + +#define CLOCK_STATUS_MASK 0xffff0000 +#define CLOCK_CONFIG_MASK 0x0000ffff + +#define CALLBACK_TIMEOUT 500 + +static int get_clock(struct snd_tscm *tscm, u32 *data) +{ + int trial = 0; + __be32 reg; + int err; + + while (trial++ < 5) { + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_CLOCK_STATUS, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + *data = be32_to_cpu(reg); + if (*data & CLOCK_STATUS_MASK) + break; + + // In intermediate state after changing clock status. + msleep(50); + } + + // Still in the intermediate state. + if (trial >= 5) + return -EAGAIN; + + return 0; +} + +static int set_clock(struct snd_tscm *tscm, unsigned int rate, + enum snd_tscm_clock clock) +{ + u32 data; + __be32 reg; + int err; + + err = get_clock(tscm, &data); + if (err < 0) + return err; + data &= CLOCK_CONFIG_MASK; + + if (rate > 0) { + data &= 0x000000ff; + /* Base rate. */ + if ((rate % 44100) == 0) { + data |= 0x00000100; + /* Multiplier. */ + if (rate / 44100 == 2) + data |= 0x00008000; + } else if ((rate % 48000) == 0) { + data |= 0x00000200; + /* Multiplier. */ + if (rate / 48000 == 2) + data |= 0x00008000; + } else { + return -EAGAIN; + } + } + + if (clock != INT_MAX) { + data &= 0x0000ff00; + data |= clock + 1; + } + + reg = cpu_to_be32(data); + + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_CLOCK_STATUS, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + if (data & 0x00008000) + reg = cpu_to_be32(0x0000001a); + else + reg = cpu_to_be32(0x0000000d); + + return snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MULTIPLEX_MODE, + ®, sizeof(reg), 0); +} + +int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate) +{ + u32 data; + int err; + + err = get_clock(tscm, &data); + if (err < 0) + return err; + + data = (data & 0xff000000) >> 24; + + /* Check base rate. */ + if ((data & 0x0f) == 0x01) + *rate = 44100; + else if ((data & 0x0f) == 0x02) + *rate = 48000; + else + return -EAGAIN; + + /* Check multiplier. */ + if ((data & 0xf0) == 0x80) + *rate *= 2; + else if ((data & 0xf0) != 0x00) + return -EAGAIN; + + return err; +} + +int snd_tscm_stream_get_clock(struct snd_tscm *tscm, enum snd_tscm_clock *clock) +{ + u32 data; + int err; + + err = get_clock(tscm, &data); + if (err < 0) + return err; + + *clock = ((data & 0x00ff0000) >> 16) - 1; + if (*clock < 0 || *clock > SND_TSCM_CLOCK_ADAT) + return -EIO; + + return 0; +} + +static int enable_data_channels(struct snd_tscm *tscm) +{ + __be32 reg; + u32 data; + unsigned int i; + int err; + + data = 0; + for (i = 0; i < tscm->spec->pcm_capture_analog_channels; ++i) + data |= BIT(i); + if (tscm->spec->has_adat) + data |= 0x0000ff00; + if (tscm->spec->has_spdif) + data |= 0x00030000; + + reg = cpu_to_be32(data); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_TX_PCM_CHANNELS, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + data = 0; + for (i = 0; i < tscm->spec->pcm_playback_analog_channels; ++i) + data |= BIT(i); + if (tscm->spec->has_adat) + data |= 0x0000ff00; + if (tscm->spec->has_spdif) + data |= 0x00030000; + + reg = cpu_to_be32(data); + return snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_RX_PCM_CHANNELS, + ®, sizeof(reg), 0); +} + +static int set_stream_formats(struct snd_tscm *tscm, unsigned int rate) +{ + __be32 reg; + int err; + + // Set an option for unknown purpose. + reg = cpu_to_be32(0x00200000); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_SET_OPTION, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + return enable_data_channels(tscm); +} + +static void finish_session(struct snd_tscm *tscm) +{ + __be32 reg; + + reg = 0; + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_START_STREAMING, + ®, sizeof(reg), 0); + + reg = 0; + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_RX_ON, + ®, sizeof(reg), 0); + + // Unregister channels. + reg = cpu_to_be32(0x00000000); + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_TX_CH, + ®, sizeof(reg), 0); + reg = cpu_to_be32(0x00000000); + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_UNKNOWN, + ®, sizeof(reg), 0); + reg = cpu_to_be32(0x00000000); + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_RX_CH, + ®, sizeof(reg), 0); +} + +static int begin_session(struct snd_tscm *tscm) +{ + __be32 reg; + int err; + + // Register the isochronous channel for transmitting stream. + reg = cpu_to_be32(tscm->tx_resources.channel); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_TX_CH, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + // Unknown. + reg = cpu_to_be32(0x00000002); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_UNKNOWN, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + // Register the isochronous channel for receiving stream. + reg = cpu_to_be32(tscm->rx_resources.channel); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_RX_CH, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + reg = cpu_to_be32(0x00000001); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_START_STREAMING, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + reg = cpu_to_be32(0x00000001); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_RX_ON, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + // Set an option for unknown purpose. + reg = cpu_to_be32(0x00002000); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_SET_OPTION, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + // Start multiplexing PCM samples on packets. + reg = cpu_to_be32(0x00000001); + return snd_fw_transaction(tscm->unit, + TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_ISOC_TX_ON, + ®, sizeof(reg), 0); +} + +static int keep_resources(struct snd_tscm *tscm, unsigned int rate, + struct amdtp_stream *stream) +{ + struct fw_iso_resources *resources; + int err; + + if (stream == &tscm->tx_stream) + resources = &tscm->tx_resources; + else + resources = &tscm->rx_resources; + + err = amdtp_tscm_set_parameters(stream, rate); + if (err < 0) + return err; + + return fw_iso_resources_allocate(resources, + amdtp_stream_get_max_payload(stream), + fw_parent_device(tscm->unit)->max_speed); +} + +static int init_stream(struct snd_tscm *tscm, struct amdtp_stream *s) +{ + struct fw_iso_resources *resources; + enum amdtp_stream_direction dir; + unsigned int pcm_channels; + int err; + + if (s == &tscm->tx_stream) { + resources = &tscm->tx_resources; + dir = AMDTP_IN_STREAM; + pcm_channels = tscm->spec->pcm_capture_analog_channels; + } else { + resources = &tscm->rx_resources; + dir = AMDTP_OUT_STREAM; + pcm_channels = tscm->spec->pcm_playback_analog_channels; + } + + if (tscm->spec->has_adat) + pcm_channels += 8; + if (tscm->spec->has_spdif) + pcm_channels += 2; + + err = fw_iso_resources_init(resources, tscm->unit); + if (err < 0) + return err; + + err = amdtp_tscm_init(s, tscm->unit, dir, pcm_channels); + if (err < 0) + fw_iso_resources_free(resources); + + return err; +} + +static void destroy_stream(struct snd_tscm *tscm, struct amdtp_stream *s) +{ + amdtp_stream_destroy(s); + + if (s == &tscm->tx_stream) + fw_iso_resources_destroy(&tscm->tx_resources); + else + fw_iso_resources_destroy(&tscm->rx_resources); +} + +int snd_tscm_stream_init_duplex(struct snd_tscm *tscm) +{ + int err; + + err = init_stream(tscm, &tscm->tx_stream); + if (err < 0) + return err; + + err = init_stream(tscm, &tscm->rx_stream); + if (err < 0) { + destroy_stream(tscm, &tscm->tx_stream); + return err; + } + + err = amdtp_domain_init(&tscm->domain); + if (err < 0) { + destroy_stream(tscm, &tscm->tx_stream); + destroy_stream(tscm, &tscm->rx_stream); + } + + return err; +} + +// At bus reset, streaming is stopped and some registers are clear. +void snd_tscm_stream_update_duplex(struct snd_tscm *tscm) +{ + amdtp_domain_stop(&tscm->domain); + + amdtp_stream_pcm_abort(&tscm->tx_stream); + amdtp_stream_pcm_abort(&tscm->rx_stream); +} + +// This function should be called before starting streams or after stopping +// streams. +void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm) +{ + amdtp_domain_destroy(&tscm->domain); + + destroy_stream(tscm, &tscm->rx_stream); + destroy_stream(tscm, &tscm->tx_stream); +} + +int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate, + unsigned int frames_per_period, + unsigned int frames_per_buffer) +{ + unsigned int curr_rate; + int err; + + err = snd_tscm_stream_get_rate(tscm, &curr_rate); + if (err < 0) + return err; + + if (tscm->substreams_counter == 0 || rate != curr_rate) { + amdtp_domain_stop(&tscm->domain); + + finish_session(tscm); + + fw_iso_resources_free(&tscm->tx_resources); + fw_iso_resources_free(&tscm->rx_resources); + + err = set_clock(tscm, rate, INT_MAX); + if (err < 0) + return err; + + err = keep_resources(tscm, rate, &tscm->tx_stream); + if (err < 0) + return err; + + err = keep_resources(tscm, rate, &tscm->rx_stream); + if (err < 0) { + fw_iso_resources_free(&tscm->tx_resources); + return err; + } + + err = amdtp_domain_set_events_per_period(&tscm->domain, + frames_per_period, frames_per_buffer); + if (err < 0) { + fw_iso_resources_free(&tscm->tx_resources); + fw_iso_resources_free(&tscm->rx_resources); + return err; + } + } + + return 0; +} + +int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate) +{ + unsigned int generation = tscm->rx_resources.generation; + int err; + + if (tscm->substreams_counter == 0) + return 0; + + if (amdtp_streaming_error(&tscm->rx_stream) || + amdtp_streaming_error(&tscm->tx_stream)) { + amdtp_domain_stop(&tscm->domain); + finish_session(tscm); + } + + if (generation != fw_parent_device(tscm->unit)->card->generation) { + err = fw_iso_resources_update(&tscm->tx_resources); + if (err < 0) + goto error; + + err = fw_iso_resources_update(&tscm->rx_resources); + if (err < 0) + goto error; + } + + if (!amdtp_stream_running(&tscm->rx_stream)) { + int spd = fw_parent_device(tscm->unit)->max_speed; + + err = set_stream_formats(tscm, rate); + if (err < 0) + goto error; + + err = begin_session(tscm); + if (err < 0) + goto error; + + err = amdtp_domain_add_stream(&tscm->domain, &tscm->rx_stream, + tscm->rx_resources.channel, spd); + if (err < 0) + goto error; + + err = amdtp_domain_add_stream(&tscm->domain, &tscm->tx_stream, + tscm->tx_resources.channel, spd); + if (err < 0) + goto error; + + err = amdtp_domain_start(&tscm->domain, 0); + if (err < 0) + goto error; + + if (!amdtp_stream_wait_callback(&tscm->rx_stream, + CALLBACK_TIMEOUT) || + !amdtp_stream_wait_callback(&tscm->tx_stream, + CALLBACK_TIMEOUT)) { + err = -ETIMEDOUT; + goto error; + } + } + + return 0; +error: + amdtp_domain_stop(&tscm->domain); + finish_session(tscm); + + return err; +} + +void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm) +{ + if (tscm->substreams_counter == 0) { + amdtp_domain_stop(&tscm->domain); + finish_session(tscm); + + fw_iso_resources_free(&tscm->tx_resources); + fw_iso_resources_free(&tscm->rx_resources); + } +} + +void snd_tscm_stream_lock_changed(struct snd_tscm *tscm) +{ + tscm->dev_lock_changed = true; + wake_up(&tscm->hwdep_wait); +} + +int snd_tscm_stream_lock_try(struct snd_tscm *tscm) +{ + int err; + + spin_lock_irq(&tscm->lock); + + /* user land lock this */ + if (tscm->dev_lock_count < 0) { + err = -EBUSY; + goto end; + } + + /* this is the first time */ + if (tscm->dev_lock_count++ == 0) + snd_tscm_stream_lock_changed(tscm); + err = 0; +end: + spin_unlock_irq(&tscm->lock); + return err; +} + +void snd_tscm_stream_lock_release(struct snd_tscm *tscm) +{ + spin_lock_irq(&tscm->lock); + + if (WARN_ON(tscm->dev_lock_count <= 0)) + goto end; + if (--tscm->dev_lock_count == 0) + snd_tscm_stream_lock_changed(tscm); +end: + spin_unlock_irq(&tscm->lock); +} diff --git a/sound/firewire/tascam/tascam-transaction.c b/sound/firewire/tascam/tascam-transaction.c new file mode 100644 index 000000000..a073cece4 --- /dev/null +++ b/sound/firewire/tascam/tascam-transaction.c @@ -0,0 +1,399 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam-transaction.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include "tascam.h" + +/* + * When return minus value, given argument is not MIDI status. + * When return 0, given argument is a beginning of system exclusive. + * When return the others, given argument is MIDI data. + */ +static inline int calculate_message_bytes(u8 status) +{ + switch (status) { + case 0xf6: /* Tune request. */ + case 0xf8: /* Timing clock. */ + case 0xfa: /* Start. */ + case 0xfb: /* Continue. */ + case 0xfc: /* Stop. */ + case 0xfe: /* Active sensing. */ + case 0xff: /* System reset. */ + return 1; + case 0xf1: /* MIDI time code quarter frame. */ + case 0xf3: /* Song select. */ + return 2; + case 0xf2: /* Song position pointer. */ + return 3; + case 0xf0: /* Exclusive. */ + return 0; + case 0xf7: /* End of exclusive. */ + break; + case 0xf4: /* Undefined. */ + case 0xf5: /* Undefined. */ + case 0xf9: /* Undefined. */ + case 0xfd: /* Undefined. */ + break; + default: + switch (status & 0xf0) { + case 0x80: /* Note on. */ + case 0x90: /* Note off. */ + case 0xa0: /* Polyphonic key pressure. */ + case 0xb0: /* Control change and Mode change. */ + case 0xe0: /* Pitch bend change. */ + return 3; + case 0xc0: /* Program change. */ + case 0xd0: /* Channel pressure. */ + return 2; + default: + break; + } + break; + } + + return -EINVAL; +} + +static int fill_message(struct snd_fw_async_midi_port *port, + struct snd_rawmidi_substream *substream) +{ + int i, len, consume; + u8 *label, *msg; + u8 status; + + /* The first byte is used for label, the rest for MIDI bytes. */ + label = port->buf; + msg = port->buf + 1; + + consume = snd_rawmidi_transmit_peek(substream, msg, 3); + if (consume == 0) + return 0; + + /* On exclusive message. */ + if (port->on_sysex) { + /* Seek the end of exclusives. */ + for (i = 0; i < consume; ++i) { + if (msg[i] == 0xf7) { + port->on_sysex = false; + break; + } + } + + /* At the end of exclusive message, use label 0x07. */ + if (!port->on_sysex) { + consume = i + 1; + *label = (substream->number << 4) | 0x07; + /* During exclusive message, use label 0x04. */ + } else if (consume == 3) { + *label = (substream->number << 4) | 0x04; + /* We need to fill whole 3 bytes. Go to next change. */ + } else { + return 0; + } + + len = consume; + } else { + /* The beginning of exclusives. */ + if (msg[0] == 0xf0) { + /* Transfer it in next chance in another condition. */ + port->on_sysex = true; + return 0; + } else { + /* On running-status. */ + if ((msg[0] & 0x80) != 0x80) + status = port->running_status; + else + status = msg[0]; + + /* Calculate consume bytes. */ + len = calculate_message_bytes(status); + if (len <= 0) + return 0; + + /* On running-status. */ + if ((msg[0] & 0x80) != 0x80) { + /* Enough MIDI bytes were not retrieved. */ + if (consume < len - 1) + return 0; + consume = len - 1; + + msg[2] = msg[1]; + msg[1] = msg[0]; + msg[0] = port->running_status; + } else { + /* Enough MIDI bytes were not retrieved. */ + if (consume < len) + return 0; + consume = len; + + port->running_status = msg[0]; + } + } + + *label = (substream->number << 4) | (msg[0] >> 4); + } + + if (len > 0 && len < 3) + memset(msg + len, 0, 3 - len); + + return consume; +} + +static void async_midi_port_callback(struct fw_card *card, int rcode, + void *data, size_t length, + void *callback_data) +{ + struct snd_fw_async_midi_port *port = callback_data; + struct snd_rawmidi_substream *substream = READ_ONCE(port->substream); + + /* This port is closed. */ + if (substream == NULL) + return; + + if (rcode == RCODE_COMPLETE) + snd_rawmidi_transmit_ack(substream, port->consume_bytes); + else if (!rcode_is_permanent_error(rcode)) + /* To start next transaction immediately for recovery. */ + port->next_ktime = 0; + else + /* Don't continue processing. */ + port->error = true; + + port->idling = true; + + if (!snd_rawmidi_transmit_empty(substream)) + schedule_work(&port->work); +} + +static void midi_port_work(struct work_struct *work) +{ + struct snd_fw_async_midi_port *port = + container_of(work, struct snd_fw_async_midi_port, work); + struct snd_rawmidi_substream *substream = READ_ONCE(port->substream); + int generation; + + /* Under transacting or error state. */ + if (!port->idling || port->error) + return; + + /* Nothing to do. */ + if (substream == NULL || snd_rawmidi_transmit_empty(substream)) + return; + + /* Do it in next chance. */ + if (ktime_after(port->next_ktime, ktime_get())) { + schedule_work(&port->work); + return; + } + + /* + * Fill the buffer. The callee must use snd_rawmidi_transmit_peek(). + * Later, snd_rawmidi_transmit_ack() is called. + */ + memset(port->buf, 0, 4); + port->consume_bytes = fill_message(port, substream); + if (port->consume_bytes <= 0) { + /* Do it in next chance, immediately. */ + if (port->consume_bytes == 0) { + port->next_ktime = 0; + schedule_work(&port->work); + } else { + /* Fatal error. */ + port->error = true; + } + return; + } + + /* Set interval to next transaction. */ + port->next_ktime = ktime_add_ns(ktime_get(), + port->consume_bytes * 8 * (NSEC_PER_SEC / 31250)); + + /* Start this transaction. */ + port->idling = false; + + /* + * In Linux FireWire core, when generation is updated with memory + * barrier, node id has already been updated. In this module, After + * this smp_rmb(), load/store instructions to memory are completed. + * Thus, both of generation and node id are available with recent + * values. This is a light-serialization solution to handle bus reset + * events on IEEE 1394 bus. + */ + generation = port->parent->generation; + smp_rmb(); + + fw_send_request(port->parent->card, &port->transaction, + TCODE_WRITE_QUADLET_REQUEST, + port->parent->node_id, generation, + port->parent->max_speed, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_RX_QUAD, + port->buf, 4, async_midi_port_callback, + port); +} + +void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port) +{ + port->idling = true; + port->error = false; + port->running_status = 0; + port->on_sysex = false; +} + +static void handle_midi_tx(struct fw_card *card, struct fw_request *request, + int tcode, int destination, int source, + int generation, unsigned long long offset, + void *data, size_t length, void *callback_data) +{ + struct snd_tscm *tscm = callback_data; + u32 *buf = (u32 *)data; + unsigned int messages; + unsigned int i; + unsigned int port; + struct snd_rawmidi_substream *substream; + u8 *b; + int bytes; + + if (offset != tscm->async_handler.offset) + goto end; + + messages = length / 8; + for (i = 0; i < messages; i++) { + b = (u8 *)(buf + i * 2); + + port = b[0] >> 4; + /* TODO: support virtual MIDI ports. */ + if (port >= tscm->spec->midi_capture_ports) + goto end; + + /* Assume the message length. */ + bytes = calculate_message_bytes(b[1]); + /* On MIDI data or exclusives. */ + if (bytes <= 0) { + /* Seek the end of exclusives. */ + for (bytes = 1; bytes < 4; bytes++) { + if (b[bytes] == 0xf7) + break; + } + if (bytes == 4) + bytes = 3; + } + + substream = READ_ONCE(tscm->tx_midi_substreams[port]); + if (substream != NULL) + snd_rawmidi_receive(substream, b + 1, bytes); + } +end: + fw_send_response(card, request, RCODE_COMPLETE); +} + +int snd_tscm_transaction_register(struct snd_tscm *tscm) +{ + static const struct fw_address_region resp_register_region = { + .start = 0xffffe0000000ull, + .end = 0xffffe000ffffull, + }; + unsigned int i; + int err; + + /* + * Usually, two quadlets are transferred by one transaction. The first + * quadlet has MIDI messages, the rest includes timestamp. + * Sometimes, 8 set of the data is transferred by a block transaction. + */ + tscm->async_handler.length = 8 * 8; + tscm->async_handler.address_callback = handle_midi_tx; + tscm->async_handler.callback_data = tscm; + + err = fw_core_add_address_handler(&tscm->async_handler, + &resp_register_region); + if (err < 0) + return err; + + err = snd_tscm_transaction_reregister(tscm); + if (err < 0) + goto error; + + for (i = 0; i < TSCM_MIDI_OUT_PORT_MAX; i++) { + tscm->out_ports[i].parent = fw_parent_device(tscm->unit); + tscm->out_ports[i].next_ktime = 0; + INIT_WORK(&tscm->out_ports[i].work, midi_port_work); + } + + return err; +error: + fw_core_remove_address_handler(&tscm->async_handler); + tscm->async_handler.callback_data = NULL; + return err; +} + +/* At bus reset, these registers are cleared. */ +int snd_tscm_transaction_reregister(struct snd_tscm *tscm) +{ + struct fw_device *device = fw_parent_device(tscm->unit); + __be32 reg; + int err; + + /* Register messaging address. Block transaction is not allowed. */ + reg = cpu_to_be32((device->card->node_id << 16) | + (tscm->async_handler.offset >> 32)); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_TX_ADDR_HI, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + reg = cpu_to_be32(tscm->async_handler.offset); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_TX_ADDR_LO, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + /* Turn on messaging. */ + reg = cpu_to_be32(0x00000001); + err = snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_TX_ON, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + /* Turn on FireWire LED. */ + reg = cpu_to_be32(0x0001008e); + return snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_LED_POWER, + ®, sizeof(reg), 0); +} + +void snd_tscm_transaction_unregister(struct snd_tscm *tscm) +{ + __be32 reg; + + if (tscm->async_handler.callback_data == NULL) + return; + + /* Turn off FireWire LED. */ + reg = cpu_to_be32(0x0000008e); + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_LED_POWER, + ®, sizeof(reg), 0); + + /* Turn off messaging. */ + reg = cpu_to_be32(0x00000000); + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_TX_ON, + ®, sizeof(reg), 0); + + /* Unregister the address. */ + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_TX_ADDR_HI, + ®, sizeof(reg), 0); + snd_fw_transaction(tscm->unit, TCODE_WRITE_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_TX_ADDR_LO, + ®, sizeof(reg), 0); + + fw_core_remove_address_handler(&tscm->async_handler); + tscm->async_handler.callback_data = NULL; +} diff --git a/sound/firewire/tascam/tascam.c b/sound/firewire/tascam/tascam.c new file mode 100644 index 000000000..75f2edd8e --- /dev/null +++ b/sound/firewire/tascam/tascam.c @@ -0,0 +1,272 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tascam.c - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#include "tascam.h" + +MODULE_DESCRIPTION("TASCAM FireWire series Driver"); +MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); +MODULE_LICENSE("GPL v2"); + +static const struct snd_tscm_spec model_specs[] = { + { + .name = "FW-1884", + .has_adat = true, + .has_spdif = true, + .pcm_capture_analog_channels = 8, + .pcm_playback_analog_channels = 8, + .midi_capture_ports = 4, + .midi_playback_ports = 4, + }, + { + .name = "FW-1082", + .has_adat = false, + .has_spdif = true, + .pcm_capture_analog_channels = 8, + .pcm_playback_analog_channels = 2, + .midi_capture_ports = 2, + .midi_playback_ports = 2, + }, + { + .name = "FW-1804", + .has_adat = true, + .has_spdif = true, + .pcm_capture_analog_channels = 8, + .pcm_playback_analog_channels = 2, + .midi_capture_ports = 2, + .midi_playback_ports = 4, + }, +}; + +static int identify_model(struct snd_tscm *tscm) +{ + struct fw_device *fw_dev = fw_parent_device(tscm->unit); + const u32 *config_rom = fw_dev->config_rom; + char model[9]; + unsigned int i; + u8 c; + + if (fw_dev->config_rom_length < 30) { + dev_err(&tscm->unit->device, + "Configuration ROM is too short.\n"); + return -ENODEV; + } + + /* Pick up model name from certain addresses. */ + for (i = 0; i < 8; i++) { + c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4)); + if (c == '\0') + break; + model[i] = c; + } + model[i] = '\0'; + + for (i = 0; i < ARRAY_SIZE(model_specs); i++) { + if (strcmp(model, model_specs[i].name) == 0) { + tscm->spec = &model_specs[i]; + break; + } + } + if (tscm->spec == NULL) + return -ENODEV; + + strcpy(tscm->card->driver, "FW-TASCAM"); + strcpy(tscm->card->shortname, model); + strcpy(tscm->card->mixername, model); + snprintf(tscm->card->longname, sizeof(tscm->card->longname), + "TASCAM %s, GUID %08x%08x at %s, S%d", model, + fw_dev->config_rom[3], fw_dev->config_rom[4], + dev_name(&tscm->unit->device), 100 << fw_dev->max_speed); + + return 0; +} + +static void tscm_card_free(struct snd_card *card) +{ + struct snd_tscm *tscm = card->private_data; + + snd_tscm_transaction_unregister(tscm); + snd_tscm_stream_destroy_duplex(tscm); +} + +static void do_registration(struct work_struct *work) +{ + struct snd_tscm *tscm = container_of(work, struct snd_tscm, dwork.work); + int err; + + err = snd_card_new(&tscm->unit->device, -1, NULL, THIS_MODULE, 0, + &tscm->card); + if (err < 0) + return; + tscm->card->private_free = tscm_card_free; + tscm->card->private_data = tscm; + + err = identify_model(tscm); + if (err < 0) + goto error; + + err = snd_tscm_transaction_register(tscm); + if (err < 0) + goto error; + + err = snd_tscm_stream_init_duplex(tscm); + if (err < 0) + goto error; + + snd_tscm_proc_init(tscm); + + err = snd_tscm_create_pcm_devices(tscm); + if (err < 0) + goto error; + + err = snd_tscm_create_midi_devices(tscm); + if (err < 0) + goto error; + + err = snd_tscm_create_hwdep_device(tscm); + if (err < 0) + goto error; + + err = snd_card_register(tscm->card); + if (err < 0) + goto error; + + tscm->registered = true; + + return; +error: + snd_card_free(tscm->card); + dev_info(&tscm->unit->device, + "Sound card registration failed: %d\n", err); +} + +static int snd_tscm_probe(struct fw_unit *unit, + const struct ieee1394_device_id *entry) +{ + struct snd_tscm *tscm; + + /* Allocate this independent of sound card instance. */ + tscm = devm_kzalloc(&unit->device, sizeof(struct snd_tscm), GFP_KERNEL); + if (!tscm) + return -ENOMEM; + tscm->unit = fw_unit_get(unit); + dev_set_drvdata(&unit->device, tscm); + + mutex_init(&tscm->mutex); + spin_lock_init(&tscm->lock); + init_waitqueue_head(&tscm->hwdep_wait); + + /* Allocate and register this sound card later. */ + INIT_DEFERRABLE_WORK(&tscm->dwork, do_registration); + snd_fw_schedule_registration(unit, &tscm->dwork); + + return 0; +} + +static void snd_tscm_update(struct fw_unit *unit) +{ + struct snd_tscm *tscm = dev_get_drvdata(&unit->device); + + /* Postpone a workqueue for deferred registration. */ + if (!tscm->registered) + snd_fw_schedule_registration(unit, &tscm->dwork); + + snd_tscm_transaction_reregister(tscm); + + /* + * After registration, userspace can start packet streaming, then this + * code block works fine. + */ + if (tscm->registered) { + mutex_lock(&tscm->mutex); + snd_tscm_stream_update_duplex(tscm); + mutex_unlock(&tscm->mutex); + } +} + +static void snd_tscm_remove(struct fw_unit *unit) +{ + struct snd_tscm *tscm = dev_get_drvdata(&unit->device); + + /* + * Confirm to stop the work for registration before the sound card is + * going to be released. The work is not scheduled again because bus + * reset handler is not called anymore. + */ + cancel_delayed_work_sync(&tscm->dwork); + + if (tscm->registered) { + // Block till all of ALSA character devices are released. + snd_card_free(tscm->card); + } + + mutex_destroy(&tscm->mutex); + fw_unit_put(tscm->unit); +} + +static const struct ieee1394_device_id snd_tscm_id_table[] = { + // Tascam, FW-1884. + { + .match_flags = IEEE1394_MATCH_VENDOR_ID | + IEEE1394_MATCH_SPECIFIER_ID | + IEEE1394_MATCH_VERSION, + .vendor_id = 0x00022e, + .specifier_id = 0x00022e, + .version = 0x800000, + }, + // Tascam, FE-8 (.version = 0x800001) + // This kernel module doesn't support FE-8 because the most of features + // can be implemented in userspace without any specific support of this + // module. + // + // .version = 0x800002 is unknown. + // + // Tascam, FW-1082. + { + .match_flags = IEEE1394_MATCH_VENDOR_ID | + IEEE1394_MATCH_SPECIFIER_ID | + IEEE1394_MATCH_VERSION, + .vendor_id = 0x00022e, + .specifier_id = 0x00022e, + .version = 0x800003, + }, + // Tascam, FW-1804. + { + .match_flags = IEEE1394_MATCH_VENDOR_ID | + IEEE1394_MATCH_SPECIFIER_ID | + IEEE1394_MATCH_VERSION, + .vendor_id = 0x00022e, + .specifier_id = 0x00022e, + .version = 0x800004, + }, + {} +}; +MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table); + +static struct fw_driver tscm_driver = { + .driver = { + .owner = THIS_MODULE, + .name = KBUILD_MODNAME, + .bus = &fw_bus_type, + }, + .probe = snd_tscm_probe, + .update = snd_tscm_update, + .remove = snd_tscm_remove, + .id_table = snd_tscm_id_table, +}; + +static int __init snd_tscm_init(void) +{ + return driver_register(&tscm_driver.driver); +} + +static void __exit snd_tscm_exit(void) +{ + driver_unregister(&tscm_driver.driver); +} + +module_init(snd_tscm_init); +module_exit(snd_tscm_exit); diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h new file mode 100644 index 000000000..78b7a0898 --- /dev/null +++ b/sound/firewire/tascam/tascam.h @@ -0,0 +1,213 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * tascam.h - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + */ + +#ifndef SOUND_TASCAM_H_INCLUDED +#define SOUND_TASCAM_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/core.h> +#include <sound/initval.h> +#include <sound/info.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/firewire.h> +#include <sound/hwdep.h> +#include <sound/rawmidi.h> + +#include "../lib.h" +#include "../amdtp-stream.h" +#include "../iso-resources.h" + +struct snd_tscm_spec { + const char *const name; + bool has_adat; + bool has_spdif; + unsigned int pcm_capture_analog_channels; + unsigned int pcm_playback_analog_channels; + unsigned int midi_capture_ports; + unsigned int midi_playback_ports; +}; + +#define TSCM_MIDI_IN_PORT_MAX 4 +#define TSCM_MIDI_OUT_PORT_MAX 4 + +struct snd_fw_async_midi_port { + struct fw_device *parent; + struct work_struct work; + bool idling; + ktime_t next_ktime; + bool error; + + struct fw_transaction transaction; + + u8 buf[4]; + u8 running_status; + bool on_sysex; + + struct snd_rawmidi_substream *substream; + int consume_bytes; +}; + +#define SND_TSCM_QUEUE_COUNT 16 + +struct snd_tscm { + struct snd_card *card; + struct fw_unit *unit; + + struct mutex mutex; + spinlock_t lock; + + bool registered; + struct delayed_work dwork; + const struct snd_tscm_spec *spec; + + struct fw_iso_resources tx_resources; + struct fw_iso_resources rx_resources; + struct amdtp_stream tx_stream; + struct amdtp_stream rx_stream; + unsigned int substreams_counter; + + int dev_lock_count; + bool dev_lock_changed; + wait_queue_head_t hwdep_wait; + + /* For MIDI message incoming transactions. */ + struct fw_address_handler async_handler; + struct snd_rawmidi_substream *tx_midi_substreams[TSCM_MIDI_IN_PORT_MAX]; + + /* For MIDI message outgoing transactions. */ + struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX]; + + // A cache of status information in tx isoc packets. + __be32 state[SNDRV_FIREWIRE_TASCAM_STATE_COUNT]; + struct snd_hwdep *hwdep; + struct snd_firewire_tascam_change queue[SND_TSCM_QUEUE_COUNT]; + unsigned int pull_pos; + unsigned int push_pos; + + struct amdtp_domain domain; +}; + +#define TSCM_ADDR_BASE 0xffff00000000ull + +#define TSCM_OFFSET_FIRMWARE_REGISTER 0x0000 +#define TSCM_OFFSET_FIRMWARE_FPGA 0x0004 +#define TSCM_OFFSET_FIRMWARE_ARM 0x0008 +#define TSCM_OFFSET_FIRMWARE_HW 0x000c + +#define TSCM_OFFSET_ISOC_TX_CH 0x0200 +#define TSCM_OFFSET_UNKNOWN 0x0204 +#define TSCM_OFFSET_START_STREAMING 0x0208 +#define TSCM_OFFSET_ISOC_RX_CH 0x020c +#define TSCM_OFFSET_ISOC_RX_ON 0x0210 /* Little conviction. */ +#define TSCM_OFFSET_TX_PCM_CHANNELS 0x0214 +#define TSCM_OFFSET_RX_PCM_CHANNELS 0x0218 +#define TSCM_OFFSET_MULTIPLEX_MODE 0x021c +#define TSCM_OFFSET_ISOC_TX_ON 0x0220 +/* Unknown 0x0224 */ +#define TSCM_OFFSET_CLOCK_STATUS 0x0228 +#define TSCM_OFFSET_SET_OPTION 0x022c + +#define TSCM_OFFSET_MIDI_TX_ON 0x0300 +#define TSCM_OFFSET_MIDI_TX_ADDR_HI 0x0304 +#define TSCM_OFFSET_MIDI_TX_ADDR_LO 0x0308 + +#define TSCM_OFFSET_LED_POWER 0x0404 + +#define TSCM_OFFSET_MIDI_RX_QUAD 0x4000 + +// Although FE-8 supports the above registers, it has no I/O interfaces for +// audio samples and music messages. Otherwise it supports another notification +// for status and control message as well as LED brightening. The message +// consists of quadlet-aligned data up to 32 quadlets. The first byte of message +// is fixed to 0x40. The second byte is between 0x00 to 0x1f and represent each +// control: +// fader: 0x00-0x07 +// button: 0x0d, 0x0e +// knob: 0x14-0x1b +// sensing: 0x0b +// +// The rest two bytes represent state of the controls; e.g. current value for +// fader and knob, bitmasks for button and sensing. +// Just after turning on, 32 quadlets messages with 0x00-0x1f are immediately +// sent in one transaction. After, several quadlets are sent in one transaction. +// +// TSCM_OFFSET_FE8_CTL_TX_ON 0x0310 +// TSCM_OFFSET_FE8_CTL_TX_ADDR_HI 0x0314 +// TSCM_OFFSET_FE8_CTL_TX_ADDR_LO 0x0318 + +enum snd_tscm_clock { + SND_TSCM_CLOCK_INTERNAL = 0, + SND_TSCM_CLOCK_WORD = 1, + SND_TSCM_CLOCK_SPDIF = 2, + SND_TSCM_CLOCK_ADAT = 3, +}; + +int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit, + enum amdtp_stream_direction dir, unsigned int pcm_channels); +int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate); +int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s, + struct snd_pcm_runtime *runtime); + +int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate); +int snd_tscm_stream_get_clock(struct snd_tscm *tscm, + enum snd_tscm_clock *clock); +int snd_tscm_stream_init_duplex(struct snd_tscm *tscm); +void snd_tscm_stream_update_duplex(struct snd_tscm *tscm); +void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm); +int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate, + unsigned int frames_per_period, + unsigned int frames_per_buffer); +int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate); +void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm); + +void snd_tscm_stream_lock_changed(struct snd_tscm *tscm); +int snd_tscm_stream_lock_try(struct snd_tscm *tscm); +void snd_tscm_stream_lock_release(struct snd_tscm *tscm); + +void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port); + +static inline void +snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port, + struct snd_rawmidi_substream *substream) +{ + if (!port->error) { + port->substream = substream; + schedule_work(&port->work); + } +} + +static inline void +snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port) +{ + port->substream = NULL; + cancel_work_sync(&port->work); + port->error = false; +} + +int snd_tscm_transaction_register(struct snd_tscm *tscm); +int snd_tscm_transaction_reregister(struct snd_tscm *tscm); +void snd_tscm_transaction_unregister(struct snd_tscm *tscm); + +void snd_tscm_proc_init(struct snd_tscm *tscm); + +int snd_tscm_create_pcm_devices(struct snd_tscm *tscm); + +int snd_tscm_create_midi_devices(struct snd_tscm *tscm); + +int snd_tscm_create_hwdep_device(struct snd_tscm *tscm); + +#endif |