aboutsummaryrefslogtreecommitdiffstats
path: root/sound/firewire
diff options
context:
space:
mode:
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/amdtp-stream.c45
-rw-r--r--sound/firewire/amdtp-stream.h6
-rw-r--r--sound/firewire/bebob/bebob_stream.c2
-rw-r--r--sound/firewire/dice/dice-stream.c2
-rw-r--r--sound/firewire/digi00x/digi00x-stream.c2
-rw-r--r--sound/firewire/fireface/ff-stream.c2
-rw-r--r--sound/firewire/fireworks/fireworks_stream.c2
-rw-r--r--sound/firewire/motu/motu-stream.c2
-rw-r--r--sound/firewire/oxfw/oxfw-stream.c2
-rw-r--r--sound/firewire/tascam/tascam-stream.c2
10 files changed, 41 insertions, 26 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 838f695b20de..1f38729c8e74 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -54,7 +54,6 @@
/* TODO: make these configurable */
#define INTERRUPT_INTERVAL 16
-#define QUEUE_LENGTH 48
// For iso header, tstamp and 2 CIP header.
#define IR_CTX_HEADER_SIZE_CIP 16
@@ -451,7 +450,7 @@ static int queue_packet(struct amdtp_stream *s, struct fw_iso_packet *params)
goto end;
}
- if (++s->packet_index >= QUEUE_LENGTH)
+ if (++s->packet_index >= s->queue_size)
s->packet_index = 0;
end:
return err;
@@ -669,13 +668,14 @@ static inline u32 increment_cycle_count(u32 cycle, unsigned int addend)
}
// Align to actual cycle count for the packet which is going to be scheduled.
-// This module queued the same number of isochronous cycle as QUEUE_LENGTH to
-// skip isochronous cycle, therefore it's OK to just increment the cycle by
-// QUEUE_LENGTH for scheduled cycle.
-static inline u32 compute_it_cycle(const __be32 ctx_header_tstamp)
+// This module queued the same number of isochronous cycle as the size of queue
+// to kip isochronous cycle, therefore it's OK to just increment the cycle by
+// the size of queue for scheduled cycle.
+static inline u32 compute_it_cycle(const __be32 ctx_header_tstamp,
+ unsigned int queue_size)
{
u32 cycle = compute_cycle_count(ctx_header_tstamp);
- return increment_cycle_count(cycle, QUEUE_LENGTH);
+ return increment_cycle_count(cycle, queue_size);
}
static int generate_device_pkt_descs(struct amdtp_stream *s,
@@ -689,7 +689,7 @@ static int generate_device_pkt_descs(struct amdtp_stream *s,
for (i = 0; i < packets; ++i) {
struct pkt_desc *desc = descs + i;
- unsigned int index = (s->packet_index + i) % QUEUE_LENGTH;
+ unsigned int index = (s->packet_index + i) % s->queue_size;
unsigned int cycle;
unsigned int payload_length;
unsigned int data_blocks;
@@ -730,9 +730,9 @@ static void generate_ideal_pkt_descs(struct amdtp_stream *s,
for (i = 0; i < packets; ++i) {
struct pkt_desc *desc = descs + i;
- unsigned int index = (s->packet_index + i) % QUEUE_LENGTH;
+ unsigned int index = (s->packet_index + i) % s->queue_size;
- desc->cycle = compute_it_cycle(*ctx_header);
+ desc->cycle = compute_it_cycle(*ctx_header, s->queue_size);
desc->syt = calculate_syt(s, desc->cycle);
desc->data_blocks = calculate_data_blocks(s, desc->syt);
@@ -779,12 +779,15 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
{
struct amdtp_stream *s = private_data;
const __be32 *ctx_header = header;
- unsigned int packets = header_length / sizeof(*ctx_header);
+ unsigned int packets;
int i;
if (s->packet_index < 0)
return;
+ // Calculate the number of packets in buffer and check XRUN.
+ packets = header_length / sizeof(*ctx_header);
+
generate_ideal_pkt_descs(s, s->pkt_descs, ctx_header, packets);
process_ctx_payloads(s, s->pkt_descs, packets);
@@ -828,7 +831,7 @@ static void in_stream_callback(struct fw_iso_context *context, u32 tstamp,
if (s->packet_index < 0)
return;
- // The number of packets in buffer.
+ // Calculate the number of packets in buffer and check XRUN.
packets = header_length / s->ctx_data.tx.ctx_header_size;
err = generate_device_pkt_descs(s, s->pkt_descs, ctx_header, packets);
@@ -874,7 +877,7 @@ static void amdtp_stream_first_callback(struct fw_iso_context *context,
context->callback.sc = in_stream_callback;
} else {
- cycle = compute_it_cycle(*ctx_header);
+ cycle = compute_it_cycle(*ctx_header, s->queue_size);
context->callback.sc = out_stream_callback;
}
@@ -894,7 +897,8 @@ static void amdtp_stream_first_callback(struct fw_iso_context *context,
* amdtp_stream_set_parameters() and it must be started before any PCM or MIDI
* device can be started.
*/
-static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed)
+static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed,
+ struct amdtp_domain *d)
{
static const struct {
unsigned int data_block;
@@ -908,6 +912,7 @@ static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed)
[CIP_SFC_88200] = { 0, 67 },
[CIP_SFC_176400] = { 0, 67 },
};
+ unsigned int events_per_buffer = d->events_per_buffer;
unsigned int ctx_header_size;
unsigned int max_ctx_payload_size;
enum dma_data_direction dir;
@@ -953,7 +958,13 @@ static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed)
max_ctx_payload_size -= IT_PKT_HEADER_SIZE_CIP;
}
- err = iso_packets_buffer_init(&s->buffer, s->unit, QUEUE_LENGTH,
+ if (events_per_buffer == 0)
+ events_per_buffer = INTERRUPT_INTERVAL * 3;
+
+ s->queue_size = DIV_ROUND_UP(CYCLES_PER_SECOND * events_per_buffer,
+ amdtp_rate_table[s->sfc]);
+
+ err = iso_packets_buffer_init(&s->buffer, s->unit, s->queue_size,
max_ctx_payload_size, dir);
if (err < 0)
goto err_unlock;
@@ -981,7 +992,7 @@ static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed)
else
s->tag = TAG_CIP;
- s->pkt_descs = kcalloc(INTERRUPT_INTERVAL, sizeof(*s->pkt_descs),
+ s->pkt_descs = kcalloc(s->queue_size, sizeof(*s->pkt_descs),
GFP_KERNEL);
if (!s->pkt_descs) {
err = -ENOMEM;
@@ -1196,7 +1207,7 @@ int amdtp_domain_start(struct amdtp_domain *d)
int err = 0;
list_for_each_entry(s, &d->streams, list) {
- err = amdtp_stream_start(s, s->channel, s->speed);
+ err = amdtp_stream_start(s, s->channel, s->speed, d);
if (err < 0)
break;
}
diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h
index d95a4ed15f20..8d541727e437 100644
--- a/sound/firewire/amdtp-stream.h
+++ b/sound/firewire/amdtp-stream.h
@@ -117,6 +117,7 @@ struct amdtp_stream {
/* For packet processing. */
struct fw_iso_context *context;
struct iso_packets_buffer buffer;
+ unsigned int queue_size;
int packet_index;
struct pkt_desc *pkt_descs;
int tag;
@@ -274,6 +275,7 @@ struct amdtp_domain {
struct list_head streams;
unsigned int events_per_period;
+ unsigned int events_per_buffer;
};
int amdtp_domain_init(struct amdtp_domain *d);
@@ -286,9 +288,11 @@ int amdtp_domain_start(struct amdtp_domain *d);
void amdtp_domain_stop(struct amdtp_domain *d);
static inline int amdtp_domain_set_events_per_period(struct amdtp_domain *d,
- unsigned int events_per_period)
+ unsigned int events_per_period,
+ unsigned int events_per_buffer)
{
d->events_per_period = events_per_period;
+ d->events_per_buffer = events_per_buffer;
return 0;
}
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c
index f1db3ddc3e00..e8e9eca6f116 100644
--- a/sound/firewire/bebob/bebob_stream.c
+++ b/sound/firewire/bebob/bebob_stream.c
@@ -610,7 +610,7 @@ int snd_bebob_stream_reserve_duplex(struct snd_bebob *bebob, unsigned int rate,
}
err = amdtp_domain_set_events_per_period(&bebob->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
cmp_connection_release(&bebob->out_conn);
cmp_connection_release(&bebob->in_conn);
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c
index ef36bf588d11..b4ef08bd7e8f 100644
--- a/sound/firewire/dice/dice-stream.c
+++ b/sound/firewire/dice/dice-stream.c
@@ -327,7 +327,7 @@ int snd_dice_stream_reserve_duplex(struct snd_dice *dice, unsigned int rate,
goto error;
err = amdtp_domain_set_events_per_period(&dice->domain,
- events_per_period);
+ events_per_period, 0);
if (err < 0)
goto error;
}
diff --git a/sound/firewire/digi00x/digi00x-stream.c b/sound/firewire/digi00x/digi00x-stream.c
index 96d331e47b07..83659fc0ef25 100644
--- a/sound/firewire/digi00x/digi00x-stream.c
+++ b/sound/firewire/digi00x/digi00x-stream.c
@@ -318,7 +318,7 @@ int snd_dg00x_stream_reserve_duplex(struct snd_dg00x *dg00x, unsigned int rate,
}
err = amdtp_domain_set_events_per_period(&dg00x->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
fw_iso_resources_free(&dg00x->rx_resources);
fw_iso_resources_free(&dg00x->tx_resources);
diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c
index d05e7d3055e1..cbe0e5087b05 100644
--- a/sound/firewire/fireface/ff-stream.c
+++ b/sound/firewire/fireface/ff-stream.c
@@ -153,7 +153,7 @@ int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate,
return err;
err = amdtp_domain_set_events_per_period(&ff->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
fw_iso_resources_free(&ff->tx_resources);
fw_iso_resources_free(&ff->rx_resources);
diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c
index 0787d5c3b01b..e4d4dd08c60a 100644
--- a/sound/firewire/fireworks/fireworks_stream.c
+++ b/sound/firewire/fireworks/fireworks_stream.c
@@ -231,7 +231,7 @@ int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate,
}
err = amdtp_domain_set_events_per_period(&efw->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
cmp_connection_release(&efw->in_conn);
cmp_connection_release(&efw->out_conn);
diff --git a/sound/firewire/motu/motu-stream.c b/sound/firewire/motu/motu-stream.c
index 52b7c375bb0b..97245c670732 100644
--- a/sound/firewire/motu/motu-stream.c
+++ b/sound/firewire/motu/motu-stream.c
@@ -174,7 +174,7 @@ int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
}
err = amdtp_domain_set_events_per_period(&motu->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
fw_iso_resources_free(&motu->tx_resources);
fw_iso_resources_free(&motu->rx_resources);
diff --git a/sound/firewire/oxfw/oxfw-stream.c b/sound/firewire/oxfw/oxfw-stream.c
index 7d2e88c5b73d..318de8217b3a 100644
--- a/sound/firewire/oxfw/oxfw-stream.c
+++ b/sound/firewire/oxfw/oxfw-stream.c
@@ -308,7 +308,7 @@ int snd_oxfw_stream_reserve_duplex(struct snd_oxfw *oxfw,
}
err = amdtp_domain_set_events_per_period(&oxfw->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
cmp_connection_release(&oxfw->in_conn);
if (oxfw->has_output)
diff --git a/sound/firewire/tascam/tascam-stream.c b/sound/firewire/tascam/tascam-stream.c
index 8c04a0ad17d9..1e4d44ed8bed 100644
--- a/sound/firewire/tascam/tascam-stream.c
+++ b/sound/firewire/tascam/tascam-stream.c
@@ -416,7 +416,7 @@ int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate,
}
err = amdtp_domain_set_events_per_period(&tscm->domain,
- frames_per_period);
+ frames_per_period, 0);
if (err < 0) {
fw_iso_resources_free(&tscm->tx_resources);
fw_iso_resources_free(&tscm->rx_resources);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.