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/*
* sound/patmgr.c
*
* The patch maneger interface for the /dev/sequencer
*
* Copyright by Hannu Savolainen 1993
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. 2.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#define PATMGR_C
#include <i386/isa/sound/sound_config.h>
#if defined(CONFIG_SEQUENCER)
static int *server_procs[MAX_SYNTH_DEV] = {NULL};
static volatile struct snd_wait server_wait_flag[MAX_SYNTH_DEV] = { {0}};
static struct patmgr_info *mbox[MAX_SYNTH_DEV] = {NULL};
static volatile int msg_direction[MAX_SYNTH_DEV] = {0};
static int pmgr_opened[MAX_SYNTH_DEV] = {0};
#define A_TO_S 1
#define S_TO_A 2
static int *appl_proc = NULL;
static volatile struct snd_wait appl_wait_flag =
{0};
int
pmgr_open(int dev)
{
if (dev < 0 || dev >= num_synths)
return -(ENXIO);
if (pmgr_opened[dev])
return -(EBUSY);
pmgr_opened[dev] = 1;
server_wait_flag[dev].aborting = 0;
server_wait_flag[dev].mode = WK_NONE;
return 0;
}
void
pmgr_release(int dev)
{
if (mbox[dev]) { /* Killed in action. Inform the client */
mbox[dev]->key = PM_ERROR;
mbox[dev]->parm1 = -(EIO);
if ((appl_wait_flag.mode & WK_SLEEP)) {
appl_wait_flag.mode = WK_WAKEUP;
wakeup(appl_proc);
};
}
pmgr_opened[dev] = 0;
}
int
pmgr_read(int dev, struct fileinfo * file, snd_rw_buf * buf, int count)
{
u_long flags;
int ok = 0;
if (count != sizeof(struct patmgr_info)) {
printf("PATMGR%d: Invalid read count\n", dev);
return -(EIO);
}
while (!ok && !(server_wait_flag[dev].aborting)) {
flags = splhigh();
while (!(mbox[dev] && msg_direction[dev] == A_TO_S) &&
!(server_wait_flag[dev].aborting)) {
int chn;
server_procs[dev] = &chn;
DO_SLEEP(chn, server_wait_flag[dev], 0);
}
if (mbox[dev] && msg_direction[dev] == A_TO_S) {
if (uiomove((char *) mbox[dev], count, buf)) {
printf("sb: Bad copyout()!\n");
};
msg_direction[dev] = 0;
ok = 1;
}
splx(flags);
}
if (!ok)
return -(EINTR);
return count;
}
int
pmgr_write(int dev, struct fileinfo * file, snd_rw_buf * buf, int count)
{
u_long flags;
if (count < 4) {
printf("PATMGR%d: Write count < 4\n", dev);
return -(EIO);
}
if (uiomove((char *) mbox[dev], 4, buf)) {
printf("sb: Bad copyin()!\n");
};
if (*(u_char *) mbox[dev] == SEQ_FULLSIZE) {
int tmp_dev;
tmp_dev = ((u_short *) mbox[dev])[2];
if (tmp_dev != dev)
return -(ENXIO);
return synth_devs[dev]->load_patch(dev, *(u_short *) mbox[dev],
buf, 4, count, 1);
}
if (count != sizeof(struct patmgr_info)) {
printf("PATMGR%d: Invalid write count\n", dev);
return -(EIO);
}
/*
* If everything went OK, there should be a preallocated buffer in
* the mailbox and a client waiting.
*/
flags = splhigh();
if (mbox[dev] && !msg_direction[dev]) {
if (uiomove(&((char *) mbox[dev])[4], count - 4, buf)) {
printf("sb: Bad copyin()!\n");
};
msg_direction[dev] = S_TO_A;
if ((appl_wait_flag.mode & WK_SLEEP)) {
appl_wait_flag.mode = WK_WAKEUP;
wakeup(appl_proc);
}
}
splx(flags);
return count;
}
int
pmgr_access(int dev, struct patmgr_info * rec)
{
u_long flags;
int err = 0;
flags = splhigh();
if (mbox[dev])
printf(" PATMGR: Server %d mbox full. Why?\n", dev);
else {
int chn;
rec->key = PM_K_COMMAND;
mbox[dev] = rec;
msg_direction[dev] = A_TO_S;
if ((server_wait_flag[dev].mode & WK_SLEEP)) {
server_wait_flag[dev].mode = WK_WAKEUP;
wakeup(server_procs[dev]);
}
appl_proc = &chn;
DO_SLEEP(chn, appl_wait_flag, 0);
if (msg_direction[dev] != S_TO_A) {
rec->key = PM_ERROR;
rec->parm1 = -(EIO);
} else if (rec->key == PM_ERROR) {
err = rec->parm1;
if (err > 0)
err = -err;
}
mbox[dev] = NULL;
msg_direction[dev] = 0;
}
splx(flags);
return err;
}
int
pmgr_inform(int dev, int event, u_long p1, u_long p2, u_long p3, u_long p4)
{
u_long flags;
int err = 0;
struct patmgr_info *tmp_mbox;
if (!pmgr_opened[dev])
return 0;
tmp_mbox = (struct patmgr_info *) malloc(sizeof(struct patmgr_info), M_TEMP, M_WAITOK);
if (tmp_mbox == NULL) {
printf("pmgr: Couldn't allocate memory for a message\n");
return 0;
}
flags = splhigh();
if (mbox[dev])
printf(" PATMGR: Server %d mbox full. Why?\n", dev);
else {
int chn;
mbox[dev] = tmp_mbox;
mbox[dev]->key = PM_K_EVENT;
mbox[dev]->command = event;
mbox[dev]->parm1 = p1;
mbox[dev]->parm2 = p2;
mbox[dev]->parm3 = p3;
msg_direction[dev] = A_TO_S;
if ((server_wait_flag[dev].mode & WK_SLEEP)) {
server_wait_flag[dev].mode = WK_WAKEUP;
wakeup(server_procs[dev]);
}
appl_proc = &chn;
DO_SLEEP(chn, appl_wait_flag, 0);
mbox[dev] = NULL;
msg_direction[dev] = 0;
}
splx(flags);
free(tmp_mbox, M_TEMP);
return err;
}
#endif
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