66e456c58e
$Id$ information, and other code to make sound driver compile and work correctly with FreeBSD. Integrate changes obtained from Sujal Patel. These changes are: o local.h: reverse option logic from EXCLUDE_* to AUDIO_* o pas2_mixer.c: small addition o ad1848.c: minor change with macro names o sequencer.c: minor change with note check o many spelling corrections in comments in about every other file
266 lines
6.0 KiB
C
266 lines
6.0 KiB
C
/*
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* sound/patmgr.c
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*
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* The patch manager 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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* patmgr.c,v 1.7 1994/10/01 02:16:58 swallace Exp
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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 ((caddr_t)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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mbox[dev] =
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(struct patmgr_info *) KERNEL_MALLOC (sizeof (struct patmgr_info));
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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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