Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/oss/emu10k1/midi.c b/sound/oss/emu10k1/midi.c
new file mode 100644
index 0000000..33dea3d
--- /dev/null
+++ b/sound/oss/emu10k1/midi.c
@@ -0,0 +1,613 @@
+/*
+ **********************************************************************
+ * midi.c - /dev/midi interface for emu10k1 driver
+ * Copyright 1999, 2000 Creative Labs, Inc.
+ *
+ **********************************************************************
+ *
+ * Date Author Summary of changes
+ * ---- ------ ------------------
+ * October 20, 1999 Bertrand Lee base code release
+ *
+ **********************************************************************
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
+ * USA.
+ *
+ **********************************************************************
+ */
+
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <asm/uaccess.h>
+
+#include "hwaccess.h"
+#include "cardmo.h"
+#include "cardmi.h"
+#include "midi.h"
+
+#ifdef EMU10K1_SEQUENCER
+#include "../sound_config.h"
+#endif
+
+static DEFINE_SPINLOCK(midi_spinlock __attribute((unused)));
+
+static void init_midi_hdr(struct midi_hdr *midihdr)
+{
+ midihdr->bufferlength = MIDIIN_BUFLEN;
+ midihdr->bytesrecorded = 0;
+ midihdr->flags = 0;
+}
+
+static int midiin_add_buffer(struct emu10k1_mididevice *midi_dev, struct midi_hdr **midihdrptr)
+{
+ struct midi_hdr *midihdr;
+
+ if ((midihdr = (struct midi_hdr *) kmalloc(sizeof(struct midi_hdr), GFP_KERNEL)) == NULL) {
+ ERROR();
+ return -EINVAL;
+ }
+
+ init_midi_hdr(midihdr);
+
+ if ((midihdr->data = (u8 *) kmalloc(MIDIIN_BUFLEN, GFP_KERNEL)) == NULL) {
+ ERROR();
+ kfree(midihdr);
+ return -1;
+ }
+
+ if (emu10k1_mpuin_add_buffer(midi_dev->card->mpuin, midihdr) < 0) {
+ ERROR();
+ kfree(midihdr->data);
+ kfree(midihdr);
+ return -1;
+ }
+
+ *midihdrptr = midihdr;
+ list_add_tail(&midihdr->list, &midi_dev->mid_hdrs);
+
+ return 0;
+}
+
+static int emu10k1_midi_open(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ struct emu10k1_card *card = NULL;
+ struct emu10k1_mididevice *midi_dev;
+ struct list_head *entry;
+
+ DPF(2, "emu10k1_midi_open()\n");
+
+ /* Check for correct device to open */
+ list_for_each(entry, &emu10k1_devs) {
+ card = list_entry(entry, struct emu10k1_card, list);
+
+ if (card->midi_dev == minor)
+ goto match;
+ }
+
+ return -ENODEV;
+
+match:
+#ifdef EMU10K1_SEQUENCER
+ if (card->seq_mididev) /* card is opened by sequencer */
+ return -EBUSY;
+#endif
+
+ /* Wait for device to become free */
+ down(&card->open_sem);
+ while (card->open_mode & (file->f_mode << FMODE_MIDI_SHIFT)) {
+ if (file->f_flags & O_NONBLOCK) {
+ up(&card->open_sem);
+ return -EBUSY;
+ }
+
+ up(&card->open_sem);
+ interruptible_sleep_on(&card->open_wait);
+
+ if (signal_pending(current)) {
+ return -ERESTARTSYS;
+ }
+
+ down(&card->open_sem);
+ }
+
+ if ((midi_dev = (struct emu10k1_mididevice *) kmalloc(sizeof(*midi_dev), GFP_KERNEL)) == NULL)
+ return -EINVAL;
+
+ midi_dev->card = card;
+ midi_dev->mistate = MIDIIN_STATE_STOPPED;
+ init_waitqueue_head(&midi_dev->oWait);
+ init_waitqueue_head(&midi_dev->iWait);
+ midi_dev->ird = 0;
+ midi_dev->iwr = 0;
+ midi_dev->icnt = 0;
+ INIT_LIST_HEAD(&midi_dev->mid_hdrs);
+
+ if (file->f_mode & FMODE_READ) {
+ struct midi_openinfo dsCardMidiOpenInfo;
+ struct midi_hdr *midihdr1;
+ struct midi_hdr *midihdr2;
+
+ dsCardMidiOpenInfo.refdata = (unsigned long) midi_dev;
+
+ if (emu10k1_mpuin_open(card, &dsCardMidiOpenInfo) < 0) {
+ ERROR();
+ kfree(midi_dev);
+ return -ENODEV;
+ }
+
+ /* Add two buffers to receive sysex buffer */
+ if (midiin_add_buffer(midi_dev, &midihdr1) < 0) {
+ kfree(midi_dev);
+ return -ENODEV;
+ }
+
+ if (midiin_add_buffer(midi_dev, &midihdr2) < 0) {
+ list_del(&midihdr1->list);
+ kfree(midihdr1->data);
+ kfree(midihdr1);
+ kfree(midi_dev);
+ return -ENODEV;
+ }
+ }
+
+ if (file->f_mode & FMODE_WRITE) {
+ struct midi_openinfo dsCardMidiOpenInfo;
+
+ dsCardMidiOpenInfo.refdata = (unsigned long) midi_dev;
+
+ if (emu10k1_mpuout_open(card, &dsCardMidiOpenInfo) < 0) {
+ ERROR();
+ kfree(midi_dev);
+ return -ENODEV;
+ }
+ }
+
+ file->private_data = (void *) midi_dev;
+
+ card->open_mode |= (file->f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ | FMODE_MIDI_WRITE);
+
+ up(&card->open_sem);
+
+ return nonseekable_open(inode, file);
+}
+
+static int emu10k1_midi_release(struct inode *inode, struct file *file)
+{
+ struct emu10k1_mididevice *midi_dev = (struct emu10k1_mididevice *) file->private_data;
+ struct emu10k1_card *card;
+
+ lock_kernel();
+
+ card = midi_dev->card;
+ DPF(2, "emu10k1_midi_release()\n");
+
+ if (file->f_mode & FMODE_WRITE) {
+ if (!(file->f_flags & O_NONBLOCK)) {
+
+ while (!signal_pending(current) && (card->mpuout->firstmidiq != NULL)) {
+ DPF(4, "Cannot close - buffers not empty\n");
+
+ interruptible_sleep_on(&midi_dev->oWait);
+
+ }
+ }
+
+ emu10k1_mpuout_close(card);
+ }
+
+ if (file->f_mode & FMODE_READ) {
+ struct midi_hdr *midihdr;
+
+ if (midi_dev->mistate == MIDIIN_STATE_STARTED) {
+ emu10k1_mpuin_stop(card);
+ midi_dev->mistate = MIDIIN_STATE_STOPPED;
+ }
+
+ emu10k1_mpuin_reset(card);
+ emu10k1_mpuin_close(card);
+
+ while (!list_empty(&midi_dev->mid_hdrs)) {
+ midihdr = list_entry(midi_dev->mid_hdrs.next, struct midi_hdr, list);
+
+ list_del(midi_dev->mid_hdrs.next);
+ kfree(midihdr->data);
+ kfree(midihdr);
+ }
+ }
+
+ kfree(midi_dev);
+
+ down(&card->open_sem);
+ card->open_mode &= ~((file->f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ | FMODE_MIDI_WRITE));
+ up(&card->open_sem);
+ wake_up_interruptible(&card->open_wait);
+
+ unlock_kernel();
+
+ return 0;
+}
+
+static ssize_t emu10k1_midi_read(struct file *file, char __user *buffer, size_t count, loff_t * pos)
+{
+ struct emu10k1_mididevice *midi_dev = (struct emu10k1_mididevice *) file->private_data;
+ ssize_t ret = 0;
+ u16 cnt;
+ unsigned long flags;
+
+ DPD(4, "emu10k1_midi_read(), count %#x\n", (u32) count);
+
+ if (!access_ok(VERIFY_WRITE, buffer, count))
+ return -EFAULT;
+
+ if (midi_dev->mistate == MIDIIN_STATE_STOPPED) {
+ if (emu10k1_mpuin_start(midi_dev->card) < 0) {
+ ERROR();
+ return -EINVAL;
+ }
+
+ midi_dev->mistate = MIDIIN_STATE_STARTED;
+ }
+
+ while (count > 0) {
+ cnt = MIDIIN_BUFLEN - midi_dev->ird;
+
+ spin_lock_irqsave(&midi_spinlock, flags);
+
+ if (midi_dev->icnt < cnt)
+ cnt = midi_dev->icnt;
+
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+
+ if (cnt > count)
+ cnt = count;
+
+ if (cnt <= 0) {
+ if (file->f_flags & O_NONBLOCK)
+ return ret ? ret : -EAGAIN;
+ DPF(2, " Go to sleep...\n");
+
+ interruptible_sleep_on(&midi_dev->iWait);
+
+ if (signal_pending(current))
+ return ret ? ret : -ERESTARTSYS;
+
+ continue;
+ }
+
+ if (copy_to_user(buffer, midi_dev->iBuf + midi_dev->ird, cnt)) {
+ ERROR();
+ return ret ? ret : -EFAULT;
+ }
+
+ midi_dev->ird += cnt;
+ midi_dev->ird %= MIDIIN_BUFLEN;
+
+ spin_lock_irqsave(&midi_spinlock, flags);
+
+ midi_dev->icnt -= cnt;
+
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+
+ if (midi_dev->icnt == 0)
+ break;
+ }
+
+ return ret;
+}
+
+static ssize_t emu10k1_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t * pos)
+{
+ struct emu10k1_mididevice *midi_dev = (struct emu10k1_mididevice *) file->private_data;
+ struct midi_hdr *midihdr;
+ unsigned long flags;
+
+ DPD(4, "emu10k1_midi_write(), count=%#x\n", (u32) count);
+
+ if (!access_ok(VERIFY_READ, buffer, count))
+ return -EFAULT;
+
+ if ((midihdr = (struct midi_hdr *) kmalloc(sizeof(struct midi_hdr), GFP_KERNEL)) == NULL)
+ return -EINVAL;
+
+ midihdr->bufferlength = count;
+ midihdr->bytesrecorded = 0;
+ midihdr->flags = 0;
+
+ if ((midihdr->data = (u8 *) kmalloc(count, GFP_KERNEL)) == NULL) {
+ ERROR();
+ kfree(midihdr);
+ return -EINVAL;
+ }
+
+ if (copy_from_user(midihdr->data, buffer, count)) {
+ kfree(midihdr->data);
+ kfree(midihdr);
+ return -EFAULT;
+ }
+
+ spin_lock_irqsave(&midi_spinlock, flags);
+
+ if (emu10k1_mpuout_add_buffer(midi_dev->card, midihdr) < 0) {
+ ERROR();
+ kfree(midihdr->data);
+ kfree(midihdr);
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+ return -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+
+ return count;
+}
+
+static unsigned int emu10k1_midi_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct emu10k1_mididevice *midi_dev = (struct emu10k1_mididevice *) file->private_data;
+ unsigned long flags;
+ unsigned int mask = 0;
+
+ DPF(4, "emu10k1_midi_poll() called\n");
+
+ if (file->f_mode & FMODE_WRITE)
+ poll_wait(file, &midi_dev->oWait, wait);
+
+ if (file->f_mode & FMODE_READ)
+ poll_wait(file, &midi_dev->iWait, wait);
+
+ spin_lock_irqsave(&midi_spinlock, flags);
+
+ if (file->f_mode & FMODE_WRITE)
+ mask |= POLLOUT | POLLWRNORM;
+
+ if (file->f_mode & FMODE_READ) {
+ if (midi_dev->mistate == MIDIIN_STATE_STARTED)
+ if (midi_dev->icnt > 0)
+ mask |= POLLIN | POLLRDNORM;
+ }
+
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+
+ return mask;
+}
+
+int emu10k1_midi_callback(unsigned long msg, unsigned long refdata, unsigned long *pmsg)
+{
+ struct emu10k1_mididevice *midi_dev = (struct emu10k1_mididevice *) refdata;
+ struct midi_hdr *midihdr = NULL;
+ unsigned long flags;
+ int i;
+
+ DPF(4, "emu10k1_midi_callback()\n");
+
+ spin_lock_irqsave(&midi_spinlock, flags);
+
+ switch (msg) {
+ case ICARDMIDI_OUTLONGDATA:
+ midihdr = (struct midi_hdr *) pmsg[2];
+
+ kfree(midihdr->data);
+ kfree(midihdr);
+ wake_up_interruptible(&midi_dev->oWait);
+
+ break;
+
+ case ICARDMIDI_INLONGDATA:
+ midihdr = (struct midi_hdr *) pmsg[2];
+
+ for (i = 0; i < midihdr->bytesrecorded; i++) {
+ midi_dev->iBuf[midi_dev->iwr++] = midihdr->data[i];
+ midi_dev->iwr %= MIDIIN_BUFLEN;
+ }
+
+ midi_dev->icnt += midihdr->bytesrecorded;
+
+ if (midi_dev->mistate == MIDIIN_STATE_STARTED) {
+ init_midi_hdr(midihdr);
+ emu10k1_mpuin_add_buffer(midi_dev->card->mpuin, midihdr);
+ wake_up_interruptible(&midi_dev->iWait);
+ }
+ break;
+
+ case ICARDMIDI_INDATA:
+ {
+ u8 *pBuf = (u8 *) & pmsg[1];
+ u16 bytesvalid = pmsg[2];
+
+ for (i = 0; i < bytesvalid; i++) {
+ midi_dev->iBuf[midi_dev->iwr++] = pBuf[i];
+ midi_dev->iwr %= MIDIIN_BUFLEN;
+ }
+
+ midi_dev->icnt += bytesvalid;
+ }
+
+ wake_up_interruptible(&midi_dev->iWait);
+ break;
+
+ default: /* Unknown message */
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+ return -1;
+ }
+
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+
+ return 0;
+}
+
+/* MIDI file operations */
+struct file_operations emu10k1_midi_fops = {
+ .owner = THIS_MODULE,
+ .read = emu10k1_midi_read,
+ .write = emu10k1_midi_write,
+ .poll = emu10k1_midi_poll,
+ .open = emu10k1_midi_open,
+ .release = emu10k1_midi_release,
+};
+
+
+#ifdef EMU10K1_SEQUENCER
+
+/* functions used for sequencer access */
+
+int emu10k1_seq_midi_open(int dev, int mode,
+ void (*input) (int dev, unsigned char data),
+ void (*output) (int dev))
+{
+ struct emu10k1_card *card;
+ struct midi_openinfo dsCardMidiOpenInfo;
+ struct emu10k1_mididevice *midi_dev;
+
+ if (midi_devs[dev] == NULL || midi_devs[dev]->devc == NULL)
+ return -EINVAL;
+
+ card = midi_devs[dev]->devc;
+
+ if (card->open_mode) /* card is opened native */
+ return -EBUSY;
+
+ DPF(2, "emu10k1_seq_midi_open()\n");
+
+ if ((midi_dev = (struct emu10k1_mididevice *) kmalloc(sizeof(*midi_dev), GFP_KERNEL)) == NULL)
+ return -EINVAL;
+
+ midi_dev->card = card;
+ midi_dev->mistate = MIDIIN_STATE_STOPPED;
+ init_waitqueue_head(&midi_dev->oWait);
+ init_waitqueue_head(&midi_dev->iWait);
+ midi_dev->ird = 0;
+ midi_dev->iwr = 0;
+ midi_dev->icnt = 0;
+ INIT_LIST_HEAD(&midi_dev->mid_hdrs);
+
+ dsCardMidiOpenInfo.refdata = (unsigned long) midi_dev;
+
+ if (emu10k1_mpuout_open(card, &dsCardMidiOpenInfo) < 0) {
+ ERROR();
+ return -ENODEV;
+ }
+
+ card->seq_mididev = midi_dev;
+
+ return 0;
+}
+
+void emu10k1_seq_midi_close(int dev)
+{
+ struct emu10k1_card *card;
+
+ DPF(2, "emu10k1_seq_midi_close()\n");
+ if (midi_devs[dev] == NULL || midi_devs[dev]->devc == NULL)
+ return;
+
+ card = midi_devs[dev]->devc;
+ emu10k1_mpuout_close(card);
+
+ if (card->seq_mididev) {
+ kfree(card->seq_mididev);
+ card->seq_mididev = NULL;
+ }
+}
+
+int emu10k1_seq_midi_out(int dev, unsigned char midi_byte)
+{
+ struct emu10k1_card *card;
+ struct midi_hdr *midihdr;
+ unsigned long flags;
+
+ if (midi_devs[dev] == NULL || midi_devs[dev]->devc == NULL)
+ return -EINVAL;
+
+ card = midi_devs[dev]->devc;
+
+ if ((midihdr = (struct midi_hdr *) kmalloc(sizeof(struct midi_hdr), GFP_KERNEL)) == NULL)
+ return -EINVAL;
+
+ midihdr->bufferlength = 1;
+ midihdr->bytesrecorded = 0;
+ midihdr->flags = 0;
+
+ if ((midihdr->data = (u8 *) kmalloc(1, GFP_KERNEL)) == NULL) {
+ ERROR();
+ kfree(midihdr);
+ return -EINVAL;
+ }
+
+ *(midihdr->data) = midi_byte;
+
+ spin_lock_irqsave(&midi_spinlock, flags);
+
+ if (emu10k1_mpuout_add_buffer(card, midihdr) < 0) {
+ ERROR();
+ kfree(midihdr->data);
+ kfree(midihdr);
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+ return -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&midi_spinlock, flags);
+
+ return 1;
+}
+
+int emu10k1_seq_midi_start_read(int dev)
+{
+ return 0;
+}
+
+int emu10k1_seq_midi_end_read(int dev)
+{
+ return 0;
+}
+
+void emu10k1_seq_midi_kick(int dev)
+{
+}
+
+int emu10k1_seq_midi_buffer_status(int dev)
+{
+ int count;
+ struct midi_queue *queue;
+ struct emu10k1_card *card;
+
+ if (midi_devs[dev] == NULL || midi_devs[dev]->devc == NULL)
+ return -EINVAL;
+
+ count = 0;
+
+ card = midi_devs[dev]->devc;
+ queue = card->mpuout->firstmidiq;
+
+ while (queue != NULL) {
+ count++;
+ if (queue == card->mpuout->lastmidiq)
+ break;
+
+ queue = queue->next;
+ }
+
+ return count;
+}
+
+#endif
+