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ae28ee13b4
Amancio. There is some SoundSource support here that is primitive and probably doesn't work, but I'll let the two submitters let me know how my integration of that was since I don't have this card to test. I've only tested this on my GUS MAX since it's all I have. This all probably needs to be re-done anyway since we're widely variant from the original VOXWARE source in the current layout. Submitted by: Amancio Hasty and Jim Lowe Obtained from: Hannu Savolainen
269 lines
6.1 KiB
C
269 lines
6.1 KiB
C
/*
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* sound/patmgr.c
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*
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* The patch maneger interface for the /dev/sequencer
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*
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* Copyright by Hannu Savolainen 1993
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#define PATMGR_C
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#include "sound_config.h"
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#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_SEQUENCER)
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DEFINE_WAIT_QUEUES (server_procs[MAX_SYNTH_DEV],
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server_wait_flag[MAX_SYNTH_DEV]);
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static struct patmgr_info *mbox[MAX_SYNTH_DEV] =
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{NULL};
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static volatile int msg_direction[MAX_SYNTH_DEV] =
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{0};
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static int pmgr_opened[MAX_SYNTH_DEV] =
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{0};
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#define A_TO_S 1
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#define S_TO_A 2
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DEFINE_WAIT_QUEUE (appl_proc, appl_wait_flag);
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int
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pmgr_open (int dev)
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{
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if (dev < 0 || dev >= num_synths)
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return RET_ERROR (ENXIO);
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if (pmgr_opened[dev])
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return RET_ERROR (EBUSY);
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pmgr_opened[dev] = 1;
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RESET_WAIT_QUEUE (server_procs[dev], server_wait_flag[dev]);
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return 0;
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}
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void
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pmgr_release (int dev)
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{
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if (mbox[dev]) /*
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* Killed in action. Inform the client
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*/
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{
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mbox[dev]->key = PM_ERROR;
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mbox[dev]->parm1 = RET_ERROR (EIO);
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if (SOMEONE_WAITING (appl_proc, appl_wait_flag))
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WAKE_UP (appl_proc, appl_wait_flag);
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}
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pmgr_opened[dev] = 0;
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}
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int
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pmgr_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count)
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{
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unsigned long flags;
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int ok = 0;
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if (count != sizeof (struct patmgr_info))
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{
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printk ("PATMGR%d: Invalid read count\n", dev);
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return RET_ERROR (EIO);
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}
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while (!ok && !PROCESS_ABORTING (server_procs[dev], server_wait_flag[dev]))
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{
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DISABLE_INTR (flags);
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while (!(mbox[dev] && msg_direction[dev] == A_TO_S) &&
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!PROCESS_ABORTING (server_procs[dev], server_wait_flag[dev]))
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{
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DO_SLEEP (server_procs[dev], server_wait_flag[dev], 0);
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}
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if (mbox[dev] && msg_direction[dev] == A_TO_S)
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{
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COPY_TO_USER (buf, 0, (char *) mbox[dev], count);
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msg_direction[dev] = 0;
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ok = 1;
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}
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RESTORE_INTR (flags);
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}
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if (!ok)
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return RET_ERROR (EINTR);
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return count;
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}
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int
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pmgr_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count)
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{
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unsigned long flags;
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if (count < 4)
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{
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printk ("PATMGR%d: Write count < 4\n", dev);
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return RET_ERROR (EIO);
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}
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COPY_FROM_USER (mbox[dev], buf, 0, 4);
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if (*(unsigned char *) mbox[dev] == SEQ_FULLSIZE)
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{
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int tmp_dev;
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tmp_dev = ((unsigned short *) mbox[dev])[2];
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if (tmp_dev != dev)
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return RET_ERROR (ENXIO);
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return synth_devs[dev]->load_patch (dev, *(unsigned short *) mbox[dev],
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buf, 4, count, 1);
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}
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if (count != sizeof (struct patmgr_info))
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{
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printk ("PATMGR%d: Invalid write count\n", dev);
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return RET_ERROR (EIO);
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}
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/*
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* If everything went OK, there should be a preallocated buffer in the
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* mailbox and a client waiting.
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*/
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DISABLE_INTR (flags);
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if (mbox[dev] && !msg_direction[dev])
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{
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COPY_FROM_USER (&((char *) mbox[dev])[4], buf, 4, count - 4);
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msg_direction[dev] = S_TO_A;
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if (SOMEONE_WAITING (appl_proc, appl_wait_flag))
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{
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WAKE_UP (appl_proc, appl_wait_flag);
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}
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}
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RESTORE_INTR (flags);
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return count;
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}
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int
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pmgr_access (int dev, struct patmgr_info *rec)
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{
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unsigned long flags;
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int err = 0;
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DISABLE_INTR (flags);
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if (mbox[dev])
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printk (" PATMGR: Server %d mbox full. Why?\n", dev);
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else
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{
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rec->key = PM_K_COMMAND;
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mbox[dev] = rec;
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msg_direction[dev] = A_TO_S;
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if (SOMEONE_WAITING (server_procs[dev], server_wait_flag[dev]))
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{
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WAKE_UP (server_procs[dev], server_wait_flag[dev]);
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}
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DO_SLEEP (appl_proc, appl_wait_flag, 0);
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if (msg_direction[dev] != S_TO_A)
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{
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rec->key = PM_ERROR;
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rec->parm1 = RET_ERROR (EIO);
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}
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else if (rec->key == PM_ERROR)
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{
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err = rec->parm1;
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if (err > 0)
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err = -err;
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}
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mbox[dev] = NULL;
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msg_direction[dev] = 0;
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}
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RESTORE_INTR (flags);
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return err;
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}
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int
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pmgr_inform (int dev, int event, unsigned long p1, unsigned long p2,
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unsigned long p3, unsigned long p4)
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{
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unsigned long flags;
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int err = 0;
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if (!pmgr_opened[dev])
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return 0;
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DISABLE_INTR (flags);
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if (mbox[dev])
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printk (" PATMGR: Server %d mbox full. Why?\n", dev);
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else
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{
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if ((mbox[dev] =
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(struct patmgr_info *) KERNEL_MALLOC (sizeof (struct patmgr_info))) == NULL)
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{
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printk ("pmgr: Couldn't allocate memory for a message\n");
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return 0;
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}
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mbox[dev]->key = PM_K_EVENT;
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mbox[dev]->command = event;
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mbox[dev]->parm1 = p1;
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mbox[dev]->parm2 = p2;
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mbox[dev]->parm3 = p3;
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msg_direction[dev] = A_TO_S;
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if (SOMEONE_WAITING (server_procs[dev], server_wait_flag[dev]))
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{
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WAKE_UP (server_procs[dev], server_wait_flag[dev]);
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}
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DO_SLEEP (appl_proc, appl_wait_flag, 0);
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if (mbox[dev])
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KERNEL_FREE (mbox[dev]);
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mbox[dev] = NULL;
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msg_direction[dev] = 0;
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}
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RESTORE_INTR (flags);
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return err;
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}
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#endif
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