The subsequent allocation may still fail after freeing some voices, so we shouldn't leave them in their programmed state.

Signed-off-by: Oswald Buddenhagen oswald.buddenhagen@gmx.de --- sound/pci/emu10k1/voice.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/sound/pci/emu10k1/voice.c b/sound/pci/emu10k1/voice.c index cbeb8443492c..a602df9117f6 100644 --- a/sound/pci/emu10k1/voice.c +++ b/sound/pci/emu10k1/voice.c @@ -98,6 +98,15 @@ static int voice_alloc(struct snd_emu10k1 *emu, int type, int number, return 0; }

+static void voice_free(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *pvoice) +{ + snd_emu10k1_voice_init(emu, pvoice->number); + pvoice->interrupt = NULL; + pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = pvoice->efx = 0; + pvoice->epcm = NULL; +} + int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int number, struct snd_emu10k1_voice **rvoice) { @@ -118,12 +127,8 @@ int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int number, /* free a voice from synth */ if (emu->get_synth_voice) { result = emu->get_synth_voice(emu); - if (result >= 0) { - struct snd_emu10k1_voice *pvoice = &emu->voices[result]; - pvoice->interrupt = NULL; - pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = pvoice->efx = 0; - pvoice->epcm = NULL; - } + if (result >= 0) + voice_free(emu, &emu->voices[result]); } if (result < 0) break; @@ -143,10 +148,7 @@ int snd_emu10k1_voice_free(struct snd_emu10k1 *emu, if (snd_BUG_ON(!pvoice)) return -EINVAL; spin_lock_irqsave(&emu->voice_lock, flags); - pvoice->interrupt = NULL; - pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = pvoice->efx = 0; - pvoice->epcm = NULL; - snd_emu10k1_voice_init(emu, pvoice->number); + voice_free(emu, pvoice); spin_unlock_irqrestore(&emu->voice_lock, flags); return 0; }

This allows us to drop the code that tries to preserve already allocated voices upon repeated hw_param callback invocations. Getting it right for multi-channel voices would otherwise get a bit hairy.

Signed-off-by: Oswald Buddenhagen oswald.buddenhagen@gmx.de --- include/sound/emu10k1.h | 1 + sound/pci/emu10k1/emu10k1_callback.c | 1 + sound/pci/emu10k1/emupcm.c | 13 ++----------- sound/pci/emu10k1/emuproc.c | 5 +++-- sound/pci/emu10k1/voice.c | 5 +++-- 5 files changed, 10 insertions(+), 15 deletions(-)

diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h index 2d247f8f635b..6ec2079534d4 100644 --- a/include/sound/emu10k1.h +++ b/include/sound/emu10k1.h @@ -1451,6 +1451,7 @@ struct snd_emu10k1; struct snd_emu10k1_voice { unsigned char number; unsigned char use; + unsigned char dirty; void (*interrupt)(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice);

struct snd_emu10k1_pcm *epcm; diff --git a/sound/pci/emu10k1/emu10k1_callback.c b/sound/pci/emu10k1/emu10k1_callback.c index 4a8b2df06a28..d70ca1f50705 100644 --- a/sound/pci/emu10k1/emu10k1_callback.c +++ b/sound/pci/emu10k1/emu10k1_callback.c @@ -458,6 +458,7 @@ start_voice(struct snd_emux_voice *vp) } #endif

+ hw->voices[ch].dirty = 1; return 0; }

diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c index aa3d6d573f05..c4696c127028 100644 --- a/sound/pci/emu10k1/emupcm.c +++ b/sound/pci/emu10k1/emupcm.c @@ -80,17 +80,6 @@ static int snd_emu10k1_pcm_channel_alloc(struct snd_emu10k1_pcm * epcm, int voic { int err, i;

- if (epcm->voices[1] != NULL && voices < 2) { - snd_emu10k1_voice_free(epcm->emu, epcm->voices[1]); - epcm->voices[1] = NULL; - } - for (i = 0; i < voices; i++) { - if (epcm->voices[i] == NULL) - break; - } - if (i == voices) - return 0; /* already allocated */ - for (i = 0; i < ARRAY_SIZE(epcm->voices); i++) { if (epcm->voices[i]) { snd_emu10k1_voice_free(epcm->emu, epcm->voices[i]); @@ -306,6 +295,8 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu, snd_emu10k1_compose_send_routing(send_routing)); }

+ emu->voices[voice].dirty = 1; + spin_unlock_irqrestore(&emu->reg_lock, flags); }

diff --git a/sound/pci/emu10k1/emuproc.c b/sound/pci/emu10k1/emuproc.c index c423a56ebf9e..abcec8a01760 100644 --- a/sound/pci/emu10k1/emuproc.c +++ b/sound/pci/emu10k1/emuproc.c @@ -372,11 +372,12 @@ static void snd_emu10k1_proc_voices_read(struct snd_info_entry *entry, }; static_assert(ARRAY_SIZE(types) == EMU10K1_NUM_TYPES);

- snd_iprintf(buffer, "ch\tuse\n"); + snd_iprintf(buffer, "ch\tdirty\tuse\n"); for (idx = 0; idx < NUM_G; idx++) { voice = &emu->voices[idx]; - snd_iprintf(buffer, "%i\t%s\n", + snd_iprintf(buffer, "%i\t%u\t%s\n", idx, + voice->dirty, types[voice->use]); } } diff --git a/sound/pci/emu10k1/voice.c b/sound/pci/emu10k1/voice.c index ac89d09ed9bc..25e78fc188bf 100644 --- a/sound/pci/emu10k1/voice.c +++ b/sound/pci/emu10k1/voice.c @@ -87,9 +87,10 @@ static int voice_alloc(struct snd_emu10k1 *emu, int type, int number, static void voice_free(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice) { - snd_emu10k1_voice_init(emu, pvoice->number); + if (pvoice->dirty) + snd_emu10k1_voice_init(emu, pvoice->number); pvoice->interrupt = NULL; - pvoice->use = 0; + pvoice->use = pvoice->dirty = 0; pvoice->epcm = NULL; }

Instead of separate voices, we now allocate non-interleaved channels, which may in turn contain two interleaved voices each. The higher-level code keeps only one pointer per channel. The channels are not allocated in one block any more, as there is no reason to do that. As a consequence of that, and because it is cleaner regardless, we now let the allocator store these pointers at a specified location, rather than returning only the first one and having the calling code deduce the remaining ones.

Signed-off-by: Oswald Buddenhagen oswald.buddenhagen@gmx.de --- include/sound/emu10k1.h | 3 +- sound/pci/emu10k1/emu10k1_callback.c | 2 +- sound/pci/emu10k1/emumixer.c | 24 +++--- sound/pci/emu10k1/emupcm.c | 44 ++++++----- sound/pci/emu10k1/emuproc.c | 5 +- sound/pci/emu10k1/voice.c | 110 ++++++++++++++------------- 6 files changed, 97 insertions(+), 91 deletions(-)

diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h index 42959ba9c9f4..50fb242656f7 100644 --- a/include/sound/emu10k1.h +++ b/include/sound/emu10k1.h @@ -1452,6 +1452,7 @@ struct snd_emu10k1_voice { unsigned char number; unsigned char use; unsigned char dirty; + unsigned char last; void (*interrupt)(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice);

struct snd_emu10k1_pcm *epcm; @@ -1848,7 +1849,7 @@ int snd_emu10k1_synth_copy_from_user(struct snd_emu10k1 *emu, struct snd_util_me int snd_emu10k1_memblk_map(struct snd_emu10k1 *emu, struct snd_emu10k1_memblk *blk);

/* voice allocation */ -int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int pair, +int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int count, int channels, struct snd_emu10k1_pcm *epcm, struct snd_emu10k1_voice **rvoice); int snd_emu10k1_voice_free(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice);

diff --git a/sound/pci/emu10k1/emu10k1_callback.c b/sound/pci/emu10k1/emu10k1_callback.c index e256d3c22ee4..5691f2b610c4 100644 --- a/sound/pci/emu10k1/emu10k1_callback.c +++ b/sound/pci/emu10k1/emu10k1_callback.c @@ -282,7 +282,7 @@ get_voice(struct snd_emux *emu, struct snd_emux_port *port) if (vp->ch < 0) { /* allocate a voice */ struct snd_emu10k1_voice *hwvoice; - if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, NULL, &hwvoice) < 0 || hwvoice == NULL) + if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, 1, NULL, &hwvoice) < 0) continue; vp->ch = hwvoice->number; emu->num_voices++; diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c index 183051e846f2..a7dd88404ae1 100644 --- a/sound/pci/emu10k1/emumixer.c +++ b/sound/pci/emu10k1/emumixer.c @@ -1467,13 +1467,13 @@ static int snd_emu10k1_send_routing_put(struct snd_kcontrol *kcontrol, change = 1; } } - if (change && mix->epcm) { - if (mix->epcm->voices[0] && mix->epcm->voices[1]) { + if (change && mix->epcm && mix->epcm->voices[0]) { + if (!mix->epcm->voices[0]->last) { update_emu10k1_fxrt(emu, mix->epcm->voices[0]->number, &mix->send_routing[1][0]); - update_emu10k1_fxrt(emu, mix->epcm->voices[1]->number, + update_emu10k1_fxrt(emu, mix->epcm->voices[0]->number + 1, &mix->send_routing[2][0]); - } else if (mix->epcm->voices[0]) { + } else { update_emu10k1_fxrt(emu, mix->epcm->voices[0]->number, &mix->send_routing[0][0]); } @@ -1535,13 +1535,13 @@ static int snd_emu10k1_send_volume_put(struct snd_kcontrol *kcontrol, change = 1; } } - if (change && mix->epcm) { - if (mix->epcm->voices[0] && mix->epcm->voices[1]) { + if (change && mix->epcm && mix->epcm->voices[0]) { + if (!mix->epcm->voices[0]->last) { update_emu10k1_send_volume(emu, mix->epcm->voices[0]->number, &mix->send_volume[1][0]); - update_emu10k1_send_volume(emu, mix->epcm->voices[1]->number, + update_emu10k1_send_volume(emu, mix->epcm->voices[0]->number + 1, &mix->send_volume[2][0]); - } else if (mix->epcm->voices[0]) { + } else { update_emu10k1_send_volume(emu, mix->epcm->voices[0]->number, &mix->send_volume[0][0]); } @@ -1601,11 +1601,11 @@ static int snd_emu10k1_attn_put(struct snd_kcontrol *kcontrol, change = 1; } } - if (change && mix->epcm) { - if (mix->epcm->voices[0] && mix->epcm->voices[1]) { + if (change && mix->epcm && mix->epcm->voices[0]) { + if (!mix->epcm->voices[0]->last) { snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[0]->number, mix->attn[1]); - snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[1]->number, mix->attn[2]); - } else if (mix->epcm->voices[0]) { + snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[0]->number + 1, mix->attn[2]); + } else { snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[0]->number, mix->attn[0]); } } diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c index 8bf0a4d8aaf1..ab3f81dd439e 100644 --- a/sound/pci/emu10k1/emupcm.c +++ b/sound/pci/emu10k1/emupcm.c @@ -86,32 +86,26 @@ static void snd_emu10k1_pcm_free_voices(struct snd_emu10k1_pcm *epcm) } }

-static int snd_emu10k1_pcm_channel_alloc(struct snd_emu10k1_pcm * epcm, int voices) +static int snd_emu10k1_pcm_channel_alloc(struct snd_emu10k1_pcm *epcm, + int type, int count, int channels) { - int err, i; + int err;

snd_emu10k1_pcm_free_voices(epcm);

err = snd_emu10k1_voice_alloc(epcm->emu, - epcm->type == PLAYBACK_EMUVOICE ? EMU10K1_PCM : EMU10K1_EFX, - voices, + type, count, channels, epcm, &epcm->voices[0]); - if (err < 0) return err; - if (voices > 1) { - for (i = 1; i < voices; i++) { - epcm->voices[i] = &epcm->emu->voices[(epcm->voices[0]->number + i) % NUM_G]; - } - } + if (epcm->extra == NULL) { // The hardware supports only (half-)loop interrupts, so to support an // arbitrary number of periods per buffer, we use an extra voice with a // period-sized loop as the interrupt source. Additionally, the interrupt // timing of the hardware is "suboptimal" and needs some compensation. err = snd_emu10k1_voice_alloc(epcm->emu, - epcm->type == PLAYBACK_EMUVOICE ? EMU10K1_PCM_IRQ : EMU10K1_EFX_IRQ, - 1, + type + 1, 1, 1, epcm, &epcm->extra); if (err < 0) { /* @@ -308,9 +302,19 @@ static int snd_emu10k1_playback_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_runtime *runtime = substream->runtime; struct snd_emu10k1_pcm *epcm = runtime->private_data; size_t alloc_size; + int type, channels, count; int err;

- err = snd_emu10k1_pcm_channel_alloc(epcm, params_channels(hw_params)); + if (epcm->type == PLAYBACK_EMUVOICE) { + type = EMU10K1_PCM; + channels = 1; + count = params_channels(hw_params); + } else { + type = EMU10K1_EFX; + channels = params_channels(hw_params); + count = 1; + } + err = snd_emu10k1_pcm_channel_alloc(epcm, type, count, channels); if (err < 0) return err;

@@ -380,8 +384,8 @@ static int snd_emu10k1_playback_prepare(struct snd_pcm_substream *substream) snd_emu10k1_pcm_init_voice(emu, 1, 0, epcm->voices[0], w_16, stereo, start_addr, end_addr, &emu->pcm_mixer[substream->number]); - if (epcm->voices[1]) - snd_emu10k1_pcm_init_voice(emu, 0, 0, epcm->voices[1], w_16, true, + if (stereo) + snd_emu10k1_pcm_init_voice(emu, 0, 0, epcm->voices[0] + 1, w_16, true, start_addr, end_addr, &emu->pcm_mixer[substream->number]); return 0; @@ -572,18 +576,14 @@ static void snd_emu10k1_playback_unmute_voice(struct snd_emu10k1 *emu, unsigned int vattn; unsigned int tmp;

- if (evoice == NULL) /* skip second voice for mono */ - return; tmp = stereo ? (master ? 1 : 2) : 0; vattn = mix->attn[tmp] << 16; snd_emu10k1_playback_commit_volume(emu, evoice, vattn); }

static void snd_emu10k1_playback_mute_voice(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *evoice) { - if (evoice == NULL) - return; snd_emu10k1_playback_commit_volume(emu, evoice, 0); }

@@ -655,19 +655,21 @@ static int snd_emu10k1_playback_trigger(struct snd_pcm_substream *substream, case SNDRV_PCM_TRIGGER_RESUME: mix = &emu->pcm_mixer[substream->number]; snd_emu10k1_playback_unmute_voice(emu, epcm->voices[0], stereo, true, mix); - snd_emu10k1_playback_unmute_voice(emu, epcm->voices[1], stereo, false, mix); + if (stereo) + snd_emu10k1_playback_unmute_voice(emu, epcm->voices[0] + 1, true, false, mix); snd_emu10k1_playback_set_running(emu, epcm); snd_emu10k1_playback_trigger_voice(emu, epcm->voices[0]); snd_emu10k1_playback_trigger_voice(emu, epcm->extra); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: case SNDRV_PCM_TRIGGER_SUSPEND: snd_emu10k1_playback_stop_voice(emu, epcm->voices[0]); snd_emu10k1_playback_stop_voice(emu, epcm->extra); snd_emu10k1_playback_set_stopped(emu, epcm); snd_emu10k1_playback_mute_voice(emu, epcm->voices[0]); - snd_emu10k1_playback_mute_voice(emu, epcm->voices[1]); + if (stereo) + snd_emu10k1_playback_mute_voice(emu, epcm->voices[0] + 1); break; default: result = -EINVAL; diff --git a/sound/pci/emu10k1/emuproc.c b/sound/pci/emu10k1/emuproc.c index abcec8a01760..89ea3adff322 100644 --- a/sound/pci/emu10k1/emuproc.c +++ b/sound/pci/emu10k1/emuproc.c @@ -372,12 +372,13 @@ static void snd_emu10k1_proc_voices_read(struct snd_info_entry *entry, }; static_assert(ARRAY_SIZE(types) == EMU10K1_NUM_TYPES);

- snd_iprintf(buffer, "ch\tdirty\tuse\n"); + snd_iprintf(buffer, "ch\tdirty\tlast\tuse\n"); for (idx = 0; idx < NUM_G; idx++) { voice = &emu->voices[idx]; - snd_iprintf(buffer, "%i\t%u\t%s\n", + snd_iprintf(buffer, "%i\t%u\t%u\t%s\n", idx, voice->dirty, + voice->last, types[voice->use]); } } diff --git a/sound/pci/emu10k1/voice.c b/sound/pci/emu10k1/voice.c index 6c58e3bd14f7..6939498e26f0 100644 --- a/sound/pci/emu10k1/voice.c +++ b/sound/pci/emu10k1/voice.c @@ -23,103 +23,101 @@ * allocator uses a round robin scheme. The next free voice is tracked in * the card record and each allocation begins where the last left off. The * hardware requires stereo interleaved voices be aligned to an even/odd - * boundary. For multichannel voice allocation we ensure than the block of - * voices does not cross the 32 voice boundary. This simplifies the - * multichannel support and ensures we can use a single write to the - * (set|clear)_loop_stop registers. Otherwise (for example) the voices would - * get out of sync when pausing/resuming a stream. + * boundary. * --rlrevell */

static int voice_alloc(struct snd_emu10k1 *emu, int type, int number, struct snd_emu10k1_pcm *epcm, struct snd_emu10k1_voice **rvoice) { struct snd_emu10k1_voice *voice; - int i, j, k, first_voice, last_voice, skip; + int i, j, k, skip;

- *rvoice = NULL; - first_voice = last_voice = 0; - for (i = emu->next_free_voice, j = 0; j < NUM_G ; i += number, j += number) { + for (i = emu->next_free_voice, j = 0; j < NUM_G; i = (i + skip) % NUM_G, j += skip) { /* dev_dbg(emu->card->dev, "i %d j %d next free %d!\n", i, j, emu->next_free_voice); */ - i %= NUM_G;

/* stereo voices must be even/odd */ - if ((number == 2) && (i % 2)) { - i++; + if ((number > 1) && (i % 2)) { + skip = 1; continue; } - - skip = 0; + for (k = 0; k < number; k++) { - voice = &emu->voices[(i+k) % NUM_G]; + voice = &emu->voices[i + k]; if (voice->use) { - skip = 1; - break; + skip = k + 1; + goto next; } } - if (!skip) { - /* dev_dbg(emu->card->dev, "allocated voice %d\n", i); */ - first_voice = i; - last_voice = (i + number) % NUM_G; - emu->next_free_voice = last_voice; - break; + + for (k = 0; k < number; k++) { + voice = &emu->voices[i + k]; + voice->use = type; + voice->epcm = epcm; + /* dev_dbg(emu->card->dev, "allocated voice %d\n", i + k); */ } + voice->last = 1; + + *rvoice = &emu->voices[i]; + emu->next_free_voice = (i + number) % NUM_G; + return 0; + + next: ; } - - if (first_voice == last_voice) - return -ENOMEM; - - for (i = 0; i < number; i++) { - voice = &emu->voices[(first_voice + i) % NUM_G]; - /* - dev_dbg(emu->card->dev, "voice alloc - %i, %i of %i\n", - voice->number, idx-first_voice+1, number); - */ - voice->use = type; - voice->epcm = epcm; - } - *rvoice = &emu->voices[first_voice]; - return 0; + return -ENOMEM; // -EBUSY would have been better }

static void voice_free(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice) { if (pvoice->dirty) snd_emu10k1_voice_init(emu, pvoice->number); pvoice->interrupt = NULL; - pvoice->use = pvoice->dirty = 0; + pvoice->use = pvoice->dirty = pvoice->last = 0; pvoice->epcm = NULL; }

-int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int number, +int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int count, int channels, struct snd_emu10k1_pcm *epcm, struct snd_emu10k1_voice **rvoice) { unsigned long flags; int result;

if (snd_BUG_ON(!rvoice)) return -EINVAL; - if (snd_BUG_ON(!number)) + if (snd_BUG_ON(!count)) + return -EINVAL; + if (snd_BUG_ON(!channels)) return -EINVAL;

spin_lock_irqsave(&emu->voice_lock, flags); - for (;;) { - result = voice_alloc(emu, type, number, epcm, rvoice); - if (result == 0 || type == EMU10K1_SYNTH) - break; - - /* free a voice from synth */ - if (emu->get_synth_voice) { - result = emu->get_synth_voice(emu); - if (result >= 0) - voice_free(emu, &emu->voices[result]); + for (int got = 0; got < channels; ) { + result = voice_alloc(emu, type, count, epcm, &rvoice[got]); + if (result == 0) { + got++; + /* + dev_dbg(emu->card->dev, "voice alloc - %i, %i of %i\n", + rvoice[got - 1]->number, got, want); + */ + continue; } - if (result < 0) - break; + if (type != EMU10K1_SYNTH && emu->get_synth_voice) { + /* free a voice from synth */ + result = emu->get_synth_voice(emu); + if (result >= 0) { + voice_free(emu, &emu->voices[result]); + continue; + } + } + for (int i = 0; i < got; i++) { + for (int j = 0; j < count; j++) + voice_free(emu, rvoice[i] + j); + rvoice[i] = NULL; + } + break; } spin_unlock_irqrestore(&emu->voice_lock, flags);

@@ -132,11 +130,15 @@ int snd_emu10k1_voice_free(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *pvoice) { unsigned long flags; + int last;

if (snd_BUG_ON(!pvoice)) return -EINVAL; spin_lock_irqsave(&emu->voice_lock, flags); - voice_free(emu, pvoice); + do { + last = pvoice->last; + voice_free(emu, pvoice++); + } while (!last); spin_unlock_irqrestore(&emu->voice_lock, flags); return 0; }