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-rw-r--r--include/sound/rawmidi.h8
-rw-r--r--include/sound/ump.h118
-rw-r--r--include/uapi/sound/asound.h57
-rw-r--r--sound/core/Kconfig4
-rw-r--r--sound/core/Makefile2
-rw-r--r--sound/core/rawmidi.c139
-rw-r--r--sound/core/rawmidi_compat.c4
-rw-r--r--sound/core/ump.c230
8 files changed, 521 insertions, 41 deletions
diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
index 84413cfcdcb5..b8a230a7583b 100644
--- a/include/sound/rawmidi.h
+++ b/include/sound/rawmidi.h
@@ -63,6 +63,7 @@ struct snd_rawmidi_runtime {
size_t avail_min; /* min avail for wakeup */
size_t avail; /* max used buffer for wakeup */
size_t xruns; /* over/underruns counter */
+ size_t align; /* alignment (0 = byte stream, 3 = UMP) */
int buffer_ref; /* buffer reference count */
/* misc */
wait_queue_head_t sleep;
@@ -148,6 +149,13 @@ int snd_rawmidi_new(struct snd_card *card, char *id, int device,
void snd_rawmidi_set_ops(struct snd_rawmidi *rmidi, int stream,
const struct snd_rawmidi_ops *ops);
+/* internal */
+int snd_rawmidi_init(struct snd_rawmidi *rmidi,
+ struct snd_card *card, char *id, int device,
+ int output_count, int input_count,
+ unsigned int info_flags);
+int snd_rawmidi_free(struct snd_rawmidi *rmidi);
+
/* callbacks */
int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
diff --git a/include/sound/ump.h b/include/sound/ump.h
new file mode 100644
index 000000000000..8a3ac97cd1d3
--- /dev/null
+++ b/include/sound/ump.h
@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Universal MIDI Packet (UMP) Support
+ */
+#ifndef __SOUND_UMP_H
+#define __SOUND_UMP_H
+
+#include <sound/rawmidi.h>
+
+struct snd_ump_endpoint;
+struct snd_ump_block;
+
+struct snd_ump_endpoint {
+ struct snd_rawmidi core; /* raw UMP access */
+
+ struct snd_ump_endpoint_info info;
+
+ void *private_data;
+ void (*private_free)(struct snd_ump_endpoint *ump);
+
+ struct list_head block_list; /* list of snd_ump_block objects */
+};
+
+struct snd_ump_block {
+ struct snd_ump_block_info info;
+ struct snd_ump_endpoint *ump;
+
+ void *private_data;
+ void (*private_free)(struct snd_ump_block *blk);
+
+ struct list_head list;
+};
+
+#define rawmidi_to_ump(rmidi) container_of(rmidi, struct snd_ump_endpoint, core)
+
+int snd_ump_endpoint_new(struct snd_card *card, char *id, int device,
+ int output, int input,
+ struct snd_ump_endpoint **ump_ret);
+int snd_ump_block_new(struct snd_ump_endpoint *ump, unsigned int blk,
+ unsigned int direction, unsigned int first_group,
+ unsigned int num_groups, struct snd_ump_block **blk_ret);
+
+/*
+ * Some definitions for UMP
+ */
+
+/* MIDI 2.0 Message Type */
+enum {
+ UMP_MSG_TYPE_UTILITY = 0x00,
+ UMP_MSG_TYPE_SYSTEM = 0x01,
+ UMP_MSG_TYPE_MIDI1_CHANNEL_VOICE = 0x02,
+ UMP_MSG_TYPE_DATA = 0x03,
+ UMP_MSG_TYPE_MIDI2_CHANNEL_VOICE = 0x04,
+ UMP_MSG_TYPE_EXTENDED_DATA = 0x05,
+};
+
+/* MIDI 2.0 SysEx / Data Status; same values for both 7-bit and 8-bit SysEx */
+enum {
+ UMP_SYSEX_STATUS_SINGLE = 0,
+ UMP_SYSEX_STATUS_START = 1,
+ UMP_SYSEX_STATUS_CONTINUE = 2,
+ UMP_SYSEX_STATUS_END = 3,
+};
+
+/*
+ * Helpers for retrieving / filling bits from UMP
+ */
+/* get the message type (4bit) from a UMP packet (header) */
+static inline unsigned char ump_message_type(u32 data)
+{
+ return data >> 28;
+}
+
+/* get the group number (0-based, 4bit) from a UMP packet (header) */
+static inline unsigned char ump_message_group(u32 data)
+{
+ return (data >> 24) & 0x0f;
+}
+
+/* get the MIDI status code (4bit) from a UMP packet (header) */
+static inline unsigned char ump_message_status_code(u32 data)
+{
+ return (data >> 20) & 0x0f;
+}
+
+/* get the MIDI channel number (0-based, 4bit) from a UMP packet (header) */
+static inline unsigned char ump_message_channel(u32 data)
+{
+ return (data >> 16) & 0x0f;
+}
+
+/* get the MIDI status + channel combo byte (8bit) from a UMP packet (header) */
+static inline unsigned char ump_message_status_channel(u32 data)
+{
+ return (data >> 16) & 0xff;
+}
+
+/* compose a UMP packet (header) from type, group and status values */
+static inline u32 ump_compose(unsigned char type, unsigned char group,
+ unsigned char status, unsigned char channel)
+{
+ return ((u32)type << 28) | ((u32)group << 24) | ((u32)status << 20) |
+ ((u32)channel << 16);
+}
+
+/* get SysEx message status (for both 7 and 8bits) from a UMP packet (header) */
+static inline unsigned char ump_sysex_message_status(u32 data)
+{
+ return (data >> 20) & 0xf;
+}
+
+/* get SysEx message length (for both 7 and 8bits) from a UMP packet (header) */
+static inline unsigned char ump_sysex_message_length(u32 data)
+{
+ return (data >> 16) & 0xf;
+}
+
+#endif /* __SOUND_UMP_H */
diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h
index 0aa955aa8246..b001df4b335e 100644
--- a/include/uapi/sound/asound.h
+++ b/include/uapi/sound/asound.h
@@ -708,7 +708,7 @@ enum {
* Raw MIDI section - /dev/snd/midi??
*/
-#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 2)
+#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 3)
enum {
SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
@@ -719,6 +719,7 @@ enum {
#define SNDRV_RAWMIDI_INFO_OUTPUT 0x00000001
#define SNDRV_RAWMIDI_INFO_INPUT 0x00000002
#define SNDRV_RAWMIDI_INFO_DUPLEX 0x00000004
+#define SNDRV_RAWMIDI_INFO_UMP 0x00000008
struct snd_rawmidi_info {
unsigned int device; /* RO/WR (control): device number */
@@ -779,6 +780,57 @@ struct snd_rawmidi_status {
};
#endif
+/* UMP EP Protocol / JRTS capability bits */
+#define SNDRV_UMP_EP_INFO_PROTO_MIDI_MASK 0x0300
+#define SNDRV_UMP_EP_INFO_PROTO_MIDI1 0x0100 /* MIDI 1.0 */
+#define SNDRV_UMP_EP_INFO_PROTO_MIDI2 0x0200 /* MIDI 2.0 */
+#define SNDRV_UMP_EP_INFO_PROTO_JRTS_MASK 0x0003
+#define SNDRV_UMP_EP_INFO_PROTO_JRTS_TX 0x0001 /* JRTS Transmit */
+#define SNDRV_UMP_EP_INFO_PROTO_JRTS_RX 0x0002 /* JRTS Receive */
+
+/* UMP Endpoint information */
+struct snd_ump_endpoint_info {
+ int card; /* card number */
+ int device; /* device number */
+ unsigned int flags; /* additional info */
+ unsigned int protocol_caps; /* protocol capabilities */
+ unsigned int protocol; /* current protocol */
+ unsigned int num_blocks; /* # of function blocks */
+ unsigned short version; /* UMP major/minor version */
+ unsigned short padding[7];
+ unsigned char name[128]; /* endpoint name string */
+ unsigned char product_id[128]; /* unique product id string */
+ unsigned char reserved[32];
+} __packed;
+
+/* UMP direction */
+#define SNDRV_UMP_DIR_INPUT 0x01
+#define SNDRV_UMP_DIR_OUTPUT 0x02
+#define SNDRV_UMP_DIR_BIDIRECTION 0x03
+
+/* UMP block info flags */
+#define SNDRV_UMP_BLOCK_IS_MIDI1 (1U << 0) /* MIDI 1.0 port w/o restrict */
+#define SNDRV_UMP_BLOCK_IS_LOWSPEED (1U << 1) /* 31.25Kbps B/W MIDI1 port */
+
+/* UMP groups and blocks */
+#define SNDRV_UMP_MAX_GROUPS 16
+#define SNDRV_UMP_MAX_BLOCKS 32
+
+/* UMP Block information */
+struct snd_ump_block_info {
+ int card; /* card number */
+ int device; /* device number */
+ unsigned char block_id; /* block ID (R/W) */
+ unsigned char direction; /* UMP direction */
+ unsigned char active; /* Activeness */
+ unsigned char first_group; /* first group ID */
+ unsigned char num_groups; /* number of groups */
+ unsigned char padding[3];
+ unsigned int flags; /* various info flags */
+ unsigned char name[128]; /* block name string */
+ unsigned char reserved[32];
+} __packed;
+
#define SNDRV_RAWMIDI_IOCTL_PVERSION _IOR('W', 0x00, int)
#define SNDRV_RAWMIDI_IOCTL_INFO _IOR('W', 0x01, struct snd_rawmidi_info)
#define SNDRV_RAWMIDI_IOCTL_USER_PVERSION _IOW('W', 0x02, int)
@@ -786,6 +838,9 @@ struct snd_rawmidi_status {
#define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status)
#define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int)
#define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int)
+/* Additional ioctls for UMP rawmidi devices */
+#define SNDRV_UMP_IOCTL_ENDPOINT_INFO _IOR('W', 0x40, struct snd_ump_endpoint_info)
+#define SNDRV_UMP_IOCTL_BLOCK_INFO _IOR('W', 0x41, struct snd_ump_block_info)
/*
* Timer section - /dev/snd/timer
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 12990d9a4dff..eb1c6c930de9 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -26,6 +26,10 @@ config SND_RAWMIDI
tristate
select SND_SEQ_DEVICE if SND_SEQUENCER != n
+config SND_UMP
+ tristate
+ select SND_RAWMIDI
+
config SND_COMPRESS_OFFLOAD
tristate
diff --git a/sound/core/Makefile b/sound/core/Makefile
index 2762f03d9b7b..562a05edbc50 100644
--- a/sound/core/Makefile
+++ b/sound/core/Makefile
@@ -28,6 +28,7 @@ snd-pcm-dmaengine-objs := pcm_dmaengine.o
snd-ctl-led-objs := control_led.o
snd-rawmidi-objs := rawmidi.o
+snd-ump-objs := ump.o
snd-timer-objs := timer.o
snd-hrtimer-objs := hrtimer.o
snd-rtctimer-objs := rtctimer.o
@@ -45,6 +46,7 @@ obj-$(CONFIG_SND_PCM) += snd-pcm.o
obj-$(CONFIG_SND_DMAENGINE_PCM) += snd-pcm-dmaengine.o
obj-$(CONFIG_SND_SEQ_DEVICE) += snd-seq-device.o
obj-$(CONFIG_SND_RAWMIDI) += snd-rawmidi.o
+obj-$(CONFIG_SND_UMP) += snd-ump.o
obj-$(CONFIG_SND_OSSEMUL) += oss/
obj-$(CONFIG_SND_SEQUENCER) += seq/
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index ab28cfc1fac8..6360e2239a63 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -21,6 +21,7 @@
#include <sound/control.h>
#include <sound/minors.h>
#include <sound/initval.h>
+#include <sound/ump.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Midlevel RawMidi code for ALSA.");
@@ -35,7 +36,6 @@ module_param_array(amidi_map, int, NULL, 0444);
MODULE_PARM_DESC(amidi_map, "Raw MIDI device number assigned to 2nd OSS device.");
#endif /* CONFIG_SND_OSSEMUL */
-static int snd_rawmidi_free(struct snd_rawmidi *rmidi);
static int snd_rawmidi_dev_free(struct snd_device *device);
static int snd_rawmidi_dev_register(struct snd_device *device);
static int snd_rawmidi_dev_disconnect(struct snd_device *device);
@@ -73,6 +73,9 @@ struct snd_rawmidi_status64 {
#define SNDRV_RAWMIDI_IOCTL_STATUS64 _IOWR('W', 0x20, struct snd_rawmidi_status64)
+#define rawmidi_is_ump(rmidi) \
+ (IS_ENABLED(CONFIG_SND_UMP) && ((rmidi)->info_flags & SNDRV_RAWMIDI_INFO_UMP))
+
static struct snd_rawmidi *snd_rawmidi_search(struct snd_card *card, int device)
{
struct snd_rawmidi *rawmidi;
@@ -181,9 +184,23 @@ static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)
}
runtime->appl_ptr = runtime->hw_ptr = 0;
substream->runtime = runtime;
+ if (rawmidi_is_ump(substream->rmidi))
+ runtime->align = 3;
return 0;
}
+/* get the current alignment (either 0 or 3) */
+static inline int get_align(struct snd_rawmidi_runtime *runtime)
+{
+ if (IS_ENABLED(CONFIG_SND_UMP))
+ return runtime->align;
+ else
+ return 0;
+}
+
+/* get the trimmed size with the current alignment */
+#define get_aligned_size(runtime, size) ((size) & ~get_align(runtime))
+
static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)
{
struct snd_rawmidi_runtime *runtime = substream->runtime;
@@ -721,6 +738,8 @@ static int resize_runtime_buffer(struct snd_rawmidi_substream *substream,
return -EINVAL;
if (params->avail_min < 1 || params->avail_min > params->buffer_size)
return -EINVAL;
+ if (params->buffer_size & get_align(runtime))
+ return -EINVAL;
if (params->buffer_size != runtime->buffer_size) {
newbuf = kvzalloc(params->buffer_size, GFP_KERNEL);
if (!newbuf)
@@ -1046,12 +1065,13 @@ static int receive_with_tstamp_framing(struct snd_rawmidi_substream *substream,
struct snd_rawmidi_framing_tstamp frame = { .tv_sec = tstamp->tv_sec, .tv_nsec = tstamp->tv_nsec };
int orig_count = src_count;
int frame_size = sizeof(struct snd_rawmidi_framing_tstamp);
+ int align = get_align(runtime);
BUILD_BUG_ON(frame_size != 0x20);
if (snd_BUG_ON((runtime->hw_ptr & 0x1f) != 0))
return -EINVAL;
- while (src_count > 0) {
+ while (src_count > align) {
if ((int)(runtime->buffer_size - runtime->avail) < frame_size) {
runtime->xruns += src_count;
break;
@@ -1059,7 +1079,9 @@ static int receive_with_tstamp_framing(struct snd_rawmidi_substream *substream,
if (src_count >= SNDRV_RAWMIDI_FRAMING_DATA_LENGTH)
frame.length = SNDRV_RAWMIDI_FRAMING_DATA_LENGTH;
else {
- frame.length = src_count;
+ frame.length = get_aligned_size(runtime, src_count);
+ if (!frame.length)
+ break;
memset(frame.data, 0, SNDRV_RAWMIDI_FRAMING_DATA_LENGTH);
}
memcpy(frame.data, buffer, frame.length);
@@ -1123,6 +1145,10 @@ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
goto unlock;
}
+ count = get_aligned_size(runtime, count);
+ if (!count)
+ goto unlock;
+
if (substream->framing == SNDRV_RAWMIDI_MODE_FRAMING_TSTAMP) {
result = receive_with_tstamp_framing(substream, buffer, count, &ts64);
} else if (count == 1) { /* special case, faster code */
@@ -1142,6 +1168,9 @@ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
count1 = count;
if (count1 > (int)(runtime->buffer_size - runtime->avail))
count1 = runtime->buffer_size - runtime->avail;
+ count1 = get_aligned_size(runtime, count1);
+ if (!count1)
+ goto unlock;
memcpy(runtime->buffer + runtime->hw_ptr, buffer, count1);
runtime->hw_ptr += count1;
runtime->hw_ptr %= runtime->buffer_size;
@@ -1342,12 +1371,18 @@ static int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
count1 = count;
if (count1 > (int)(runtime->buffer_size - runtime->avail))
count1 = runtime->buffer_size - runtime->avail;
+ count1 = get_aligned_size(runtime, count1);
+ if (!count1)
+ goto __skip;
memcpy(buffer, runtime->buffer + runtime->hw_ptr, count1);
count -= count1;
result += count1;
if (count > 0) {
if (count > (int)(runtime->buffer_size - runtime->avail - count1))
count = runtime->buffer_size - runtime->avail - count1;
+ count = get_aligned_size(runtime, count);
+ if (!count)
+ goto __skip;
memcpy(buffer + count1, runtime->buffer, count);
result += count;
}
@@ -1404,6 +1439,7 @@ static int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream,
return -EINVAL;
}
snd_BUG_ON(runtime->avail + count > runtime->buffer_size);
+ count = get_aligned_size(runtime, count);
runtime->hw_ptr += count;
runtime->hw_ptr %= runtime->buffer_size;
runtime->avail += count;
@@ -1690,6 +1726,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
rmidi = entry->private_data;
snd_iprintf(buffer, "%s\n\n", rmidi->name);
+ if (IS_ENABLED(CONFIG_SND_UMP))
+ snd_iprintf(buffer, "Type: %s\n",
+ rawmidi_is_ump(rmidi) ? "UMP" : "Legacy");
mutex_lock(&rmidi->open_mutex);
if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT) {
list_for_each_entry(substream,
@@ -1800,25 +1839,12 @@ static void release_rawmidi_device(struct device *dev)
kfree(container_of(dev, struct snd_rawmidi, dev));
}
-/**
- * snd_rawmidi_new - create a rawmidi instance
- * @card: the card instance
- * @id: the id string
- * @device: the device index
- * @output_count: the number of output streams
- * @input_count: the number of input streams
- * @rrawmidi: the pointer to store the new rawmidi instance
- *
- * Creates a new rawmidi instance.
- * Use snd_rawmidi_set_ops() to set the operators to the new instance.
- *
- * Return: Zero if successful, or a negative error code on failure.
- */
-int snd_rawmidi_new(struct snd_card *card, char *id, int device,
- int output_count, int input_count,
- struct snd_rawmidi **rrawmidi)
+/* used for both rawmidi and ump */
+int snd_rawmidi_init(struct snd_rawmidi *rmidi,
+ struct snd_card *card, char *id, int device,
+ int output_count, int input_count,
+ unsigned int info_flags)
{
- struct snd_rawmidi *rmidi;
int err;
static const struct snd_device_ops ops = {
.dev_free = snd_rawmidi_dev_free,
@@ -1826,50 +1852,78 @@ int snd_rawmidi_new(struct snd_card *card, char *id, int device,
.dev_disconnect = snd_rawmidi_dev_disconnect,
};
- if (snd_BUG_ON(!card))
- return -ENXIO;
- if (rrawmidi)
- *rrawmidi = NULL;
- rmidi = kzalloc(sizeof(*rmidi), GFP_KERNEL);
- if (!rmidi)
- return -ENOMEM;
rmidi->card = card;
rmidi->device = device;
mutex_init(&rmidi->open_mutex);
init_waitqueue_head(&rmidi->open_wait);
INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams);
INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams);
+ rmidi->info_flags = info_flags;
if (id != NULL)
strscpy(rmidi->id, id, sizeof(rmidi->id));
snd_device_initialize(&rmidi->dev, card);
rmidi->dev.release = release_rawmidi_device;
- dev_set_name(&rmidi->dev, "midiC%iD%i", card->number, device);
+ if (rawmidi_is_ump(rmidi))
+ dev_set_name(&rmidi->dev, "umpC%iD%i", card->number, device);
+ else
+ dev_set_name(&rmidi->dev, "midiC%iD%i", card->number, device);
err = snd_rawmidi_alloc_substreams(rmidi,
&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT],
SNDRV_RAWMIDI_STREAM_INPUT,
input_count);
if (err < 0)
- goto error;
+ return err;
err = snd_rawmidi_alloc_substreams(rmidi,
&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT],
SNDRV_RAWMIDI_STREAM_OUTPUT,
output_count);
if (err < 0)
- goto error;
+ return err;
err = snd_device_new(card, SNDRV_DEV_RAWMIDI, rmidi, &ops);
if (err < 0)
- goto error;
+ return err;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_rawmidi_init);
+
+/**
+ * snd_rawmidi_new - create a rawmidi instance
+ * @card: the card instance
+ * @id: the id string
+ * @device: the device index
+ * @output_count: the number of output streams
+ * @input_count: the number of input streams
+ * @rrawmidi: the pointer to store the new rawmidi instance
+ *
+ * Creates a new rawmidi instance.
+ * Use snd_rawmidi_set_ops() to set the operators to the new instance.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_rawmidi_new(struct snd_card *card, char *id, int device,
+ int output_count, int input_count,
+ struct snd_rawmidi **rrawmidi)
+{
+ struct snd_rawmidi *rmidi;
+ int err;
if (rrawmidi)
+ *rrawmidi = NULL;
+ rmidi = kzalloc(sizeof(*rmidi), GFP_KERNEL);
+ if (!rmidi)
+ return -ENOMEM;
+ err = snd_rawmidi_init(rmidi, card, id, device,
+ output_count, input_count, 0);
+ if (err < 0) {
+ snd_rawmidi_free(rmidi);
+ return err;
+ }
+ if (rrawmidi)
*rrawmidi = rmidi;
return 0;
-
- error:
- snd_rawmidi_free(rmidi);
- return err;
}
EXPORT_SYMBOL(snd_rawmidi_new);
@@ -1884,7 +1938,8 @@ static void snd_rawmidi_free_substreams(struct snd_rawmidi_str *stream)
}
}
-static int snd_rawmidi_free(struct snd_rawmidi *rmidi)
+/* called from ump.c, too */
+int snd_rawmidi_free(struct snd_rawmidi *rmidi)
{
if (!rmidi)
return 0;
@@ -1901,6 +1956,7 @@ static int snd_rawmidi_free(struct snd_rawmidi *rmidi)
put_device(&rmidi->dev);
return 0;
}
+EXPORT_SYMBOL_GPL(snd_rawmidi_free);
static int snd_rawmidi_dev_free(struct snd_device *device)
{
@@ -1951,7 +2007,8 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
}
#ifdef CONFIG_SND_OSSEMUL
rmidi->ossreg = 0;
- if ((int)rmidi->device == midi_map[rmidi->card->number]) {
+ if (!rawmidi_is_ump(rmidi) &&
+ (int)rmidi->device == midi_map[rmidi->card->number]) {
if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI,
rmidi->card, 0, &snd_rawmidi_f_ops,
rmidi) < 0) {
@@ -1965,7 +2022,8 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
#endif
}
}
- if ((int)rmidi->device == amidi_map[rmidi->card->number]) {
+ if (!rawmidi_is_ump(rmidi) &&
+ (int)rmidi->device == amidi_map[rmidi->card->number]) {
if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI,
rmidi->card, 1, &snd_rawmidi_f_ops,
rmidi) < 0) {
@@ -1989,7 +2047,8 @@ static int snd_rawmidi_dev_register(struct snd_device *device)
}
rmidi->proc_entry = entry;
#if IS_ENABLED(CONFIG_SND_SEQUENCER)
- if (!rmidi->ops || !rmidi->ops->dev_register) { /* own registration mechanism */
+ /* no own registration mechanism? */
+ if (!rmidi->ops || !rmidi->ops->dev_register) {
if (snd_seq_device_new(rmidi->card, rmidi->device, SNDRV_SEQ_DEV_ID_MIDISYNTH, 0, &rmidi->seq_dev) >= 0) {
rmidi->seq_dev->private_data = rmidi;
rmidi->seq_dev->private_free = snd_rawmidi_dev_seq_free;
diff --git a/sound/core/rawmidi_compat.c b/sound/core/rawmidi_compat.c
index 68a93443583c..b81b30d82f88 100644
--- a/sound/core/rawmidi_compat.c
+++ b/sound/core/rawmidi_compat.c
@@ -111,6 +111,10 @@ static long snd_rawmidi_ioctl_compat(struct file *file, unsigned int cmd, unsign
case SNDRV_RAWMIDI_IOCTL_INFO:
case SNDRV_RAWMIDI_IOCTL_DROP:
case SNDRV_RAWMIDI_IOCTL_DRAIN:
+#if IS_ENABLED(CONFIG_SND_UMP)
+ case SNDRV_UMP_IOCTL_ENDPOINT_INFO:
+ case SNDRV_UMP_IOCTL_BLOCK_INFO:
+#endif
return snd_rawmidi_ioctl(file, cmd, (unsigned long)argp);
case SNDRV_RAWMIDI_IOCTL_PARAMS32:
return snd_rawmidi_ioctl_params_compat(rfile, argp);
diff --git a/sound/core/ump.c b/sound/core/ump.c
new file mode 100644
index 000000000000..ee57ba1ee989
--- /dev/null
+++ b/sound/core/ump.c
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Universal MIDI Packet (UMP) support
+ */
+
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/mm.h>
+#include <sound/core.h>
+#include <sound/rawmidi.h>
+#include <sound/ump.h>
+
+#define ump_err(ump, fmt, args...) dev_err(&(ump)->core.dev, fmt, ##args)
+#define ump_warn(ump, fmt, args...) dev_warn(&(ump)->core.dev, fmt, ##args)
+#define ump_info(ump, fmt, args...) dev_info(&(ump)->core.dev, fmt, ##args)
+#define ump_dbg(ump, fmt, args...) dev_dbg(&(ump)->core.dev, fmt, ##args)
+
+static int snd_ump_dev_register(struct snd_rawmidi *rmidi);
+static int snd_ump_dev_unregister(struct snd_rawmidi *rmidi);
+static long snd_ump_ioctl(struct snd_rawmidi *rmidi, unsigned int cmd,
+ void __user *argp);
+
+static const struct snd_rawmidi_global_ops snd_ump_rawmidi_ops = {
+ .dev_register = snd_ump_dev_register,
+ .dev_unregister = snd_ump_dev_unregister,
+ .ioctl = snd_ump_ioctl,
+};
+
+static void snd_ump_endpoint_free(struct snd_rawmidi *rmidi)
+{
+ struct snd_ump_endpoint *ump = rawmidi_to_ump(rmidi);
+ struct snd_ump_block *fb;
+
+ while (!list_empty(&ump->block_list)) {
+ fb = list_first_entry(&ump->block_list, struct snd_ump_block,
+ list);
+ list_del(&fb->list);
+ if (fb->private_free)
+ fb->private_free(fb);
+ kfree(fb);
+ }
+
+ if (ump->private_free)
+ ump->private_free(ump);
+}
+
+/**
+ * snd_ump_endpoint_new - create a UMP Endpoint object
+ * @card: the card instance
+ * @id: the id string for rawmidi
+ * @device: the device index for rawmidi
+ * @output: 1 for enabling output
+ * @input: 1 for enabling input
+ * @ump_ret: the pointer to store the new UMP instance
+ *
+ * Creates a new UMP Endpoint object. A UMP Endpoint is tied with one rawmidi
+ * instance with one input and/or one output rawmidi stream (either uni-
+ * or bi-directional). A UMP Endpoint may contain one or multiple UMP Blocks
+ * that consist of one or multiple UMP Groups.
+ *
+ * Use snd_rawmidi_set_ops() to set the operators to the new instance.
+ * Unlike snd_rawmidi_new(), this function sets up the info_flags by itself
+ * depending on the given @output and @input.
+ *
+ * The device has SNDRV_RAWMIDI_INFO_UMP flag set and a different device
+ * file ("umpCxDx") than a standard MIDI 1.x device ("midiCxDx") is
+ * created.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+int snd_ump_endpoint_new(struct snd_card *card, char *id, int device,
+ int output, int input,
+ struct snd_ump_endpoint **ump_ret)
+{
+ unsigned int info_flags = SNDRV_RAWMIDI_INFO_UMP;
+ struct snd_ump_endpoint *ump;
+ int err;
+
+ if (input)
+ info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+ if (output)
+ info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+ if (input && output)
+ info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+
+ ump = kzalloc(sizeof(*ump), GFP_KERNEL);
+ if (!ump)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&ump->block_list);
+ err = snd_rawmidi_init(&ump->core, card, id, device,
+ output, input, info_flags);
+ if (err < 0) {
+ snd_rawmidi_free(&ump->core);
+ return err;
+ }
+
+ ump->info.card = card->number;
+ ump->info.device = device;
+
+ ump->core.private_free = snd_ump_endpoint_free;
+ ump->core.ops = &snd_ump_rawmidi_ops;
+
+ ump_dbg(ump, "Created a UMP EP #%d (%s)\n", device, id);
+ *ump_ret = ump;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_ump_endpoint_new);
+
+/*
+ * Device register / unregister hooks;
+ * do nothing, placeholders for avoiding the default rawmidi handling
+ */
+static int snd_ump_dev_register(struct snd_rawmidi *rmidi)
+{
+ return 0;
+}
+
+static int snd_ump_dev_unregister(struct snd_rawmidi *rmidi)
+{
+ return 0;
+}
+
+static struct snd_ump_block *
+snd_ump_get_block(struct snd_ump_endpoint *ump, unsigned char id)
+{
+ struct snd_ump_block *fb;
+
+ list_for_each_entry(fb, &ump->block_list, list) {
+ if (fb->info.block_id == id)
+ return fb;
+ }
+ return NULL;
+}
+
+/**
+ * snd_ump_block_new - Create a UMP block
+ * @ump: UMP object
+ * @blk: block ID number to create
+ * @direction: direction (in/out/bidirection)
+ * @first_group: the first group ID (0-based)
+ * @num_groups: the number of groups in this block
+ * @blk_ret: the pointer to store the resultant block object
+ */
+int snd_ump_block_new(struct snd_ump_endpoint *ump, unsigned int blk,
+ unsigned int direction, unsigned int first_group,
+ unsigned int num_groups, struct snd_ump_block **blk_ret)
+{
+ struct snd_ump_block *fb, *p;
+
+ if (blk < 0 || blk >= SNDRV_UMP_MAX_BLOCKS)
+ return -EINVAL;
+
+ if (snd_ump_get_block(ump, blk))
+ return -EBUSY;
+
+ fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+ if (!fb)
+ return -ENOMEM;
+
+ fb->ump = ump;
+ fb->info.card = ump->info.card;
+ fb->info.device = ump->info.device;
+ fb->info.block_id = blk;
+ if (blk >= ump->info.num_blocks)
+ ump->info.num_blocks = blk + 1;
+ fb->info.direction = direction;
+ fb->info.active = 1;
+ fb->info.first_group = first_group;
+ fb->info.num_groups = num_groups;
+ /* fill the default name, may be overwritten to a better name */
+ snprintf(fb->info.name, sizeof(fb->info.name), "Group %d-%d",
+ first_group + 1, first_group + num_groups);
+
+ /* put the entry in the ordered list */
+ list_for_each_entry(p, &ump->block_list, list) {
+ if (p->info.block_id > blk) {
+ list_add_tail(&fb->list, &p->list);
+ goto added;
+ }
+ }
+ list_add_tail(&fb->list, &ump->block_list);
+
+ added:
+ ump_dbg(ump, "Created a UMP Block #%d (%s)\n", blk, fb->info.name);
+ *blk_ret = fb;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_ump_block_new);
+
+static int snd_ump_ioctl_block(struct snd_ump_endpoint *ump,
+ struct snd_ump_block_info __user *argp)
+{
+ struct snd_ump_block *fb;
+ unsigned char id;
+
+ if (get_user(id, &argp->block_id))
+ return -EFAULT;
+ fb = snd_ump_get_block(ump, id);
+ if (!fb)
+ return -ENOENT;
+ if (copy_to_user(argp, &fb->info, sizeof(fb->info)))
+ return -EFAULT;
+ return 0;
+}
+
+/*
+ * Handle UMP-specific ioctls; called from snd_rawmidi_ioctl()
+ */
+static long snd_ump_ioctl(struct snd_rawmidi *rmidi, unsigned int cmd,
+ void __user *argp)
+{
+ struct snd_ump_endpoint *ump = rawmidi_to_ump(rmidi);
+
+ switch (cmd) {
+ case SNDRV_UMP_IOCTL_ENDPOINT_INFO:
+ if (copy_to_user(argp, &ump->info, sizeof(ump->info)))
+ return -EFAULT;
+ return 0;
+ case SNDRV_UMP_IOCTL_BLOCK_INFO:
+ return snd_ump_ioctl_block(ump, argp);
+ default:
+ ump_dbg(ump, "rawmidi: unknown command = 0x%x\n", cmd);
+ return -ENOTTY;
+ }
+}
+
+MODULE_DESCRIPTION("Universal MIDI Packet (UMP) Core Driver");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-05-28 22:01:28 +0000