As warned: Initiate deorbit burn for the pcaudio driver.
This commit is contained in:
Poul-Henning Kamp
parent
606c689b95
commit
c43001fc56
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=118948
@ -254,7 +254,6 @@ i386/isa/istallion.c optional stli nowerror
|
||||
i386/isa/loran.c optional loran
|
||||
i386/isa/mse.c optional mse
|
||||
i386/isa/npx.c optional npx
|
||||
i386/isa/pcaudio.c optional pca
|
||||
i386/isa/pcf.c optional pcf
|
||||
i386/isa/pcvt/pcvt_drv.c optional vt
|
||||
i386/isa/pcvt/pcvt_ext.c optional vt
|
||||
|
||||
@ -347,7 +347,6 @@ pc98/pc98/olpt.c optional olpt
|
||||
pc98/pc98/pc98gdc.c optional gdc
|
||||
pc98/pc98/pc98kbd.c optional pckbd
|
||||
pc98/pc98/pc98_machdep.c standard
|
||||
pc98/pc98/pcaudio.c optional pca
|
||||
pc98/pc98/pmc.c optional pmc
|
||||
pc98/pc98/ppc.c optional ppc
|
||||
pc98/pc98/scgdcrndr.c optional sc gdc
|
||||
|
||||
@ -37,7 +37,6 @@
|
||||
21 *psm PS/2 Mouse
|
||||
22 *fd (/dev/stdin etc)
|
||||
23 *bpf Berkeley Packet Filter
|
||||
24 *pca PC speaker (/dev/pcaudio)
|
||||
26 *spkr PC speaker (/dev/spkr)
|
||||
27 *mse Microsoft bus-mouse
|
||||
28 *sio 16450/16550 serial
|
||||
|
||||
@ -531,15 +531,6 @@ hint.wl.0.port="0x300"
|
||||
options WLCACHE # enables the signal-strength cache
|
||||
options WLDEBUG # enables verbose debugging output
|
||||
|
||||
#
|
||||
# Audio drivers: `pca'
|
||||
#
|
||||
# pca: PCM audio through your PC speaker
|
||||
|
||||
device pca
|
||||
hint.pca.0.at="isa"
|
||||
hint.pca.0.port="0x040"
|
||||
|
||||
#
|
||||
# ATA raid adapters
|
||||
#
|
||||
|
||||
@ -1,563 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1994-1998 Søren Schmidt
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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,
|
||||
* without modification, immediately at the beginning of the file.
|
||||
* 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.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/filio.h>
|
||||
#include <sys/poll.h>
|
||||
#include <sys/vnode.h>
|
||||
|
||||
#include <machine/clock.h>
|
||||
#include <machine/pcaudioio.h>
|
||||
|
||||
#include <isa/isareg.h>
|
||||
#include <isa/isavar.h>
|
||||
#include <i386/isa/timerreg.h>
|
||||
|
||||
#define BUF_SIZE 8192
|
||||
#define SAMPLE_RATE 8000
|
||||
#define INTERRUPT_RATE 16000
|
||||
|
||||
static struct pca_status {
|
||||
char open; /* device open */
|
||||
char queries; /* did others try opening */
|
||||
unsigned char *buf[3]; /* triple buffering */
|
||||
unsigned char *buffer; /* current buffer ptr */
|
||||
unsigned in_use[3]; /* buffers fill */
|
||||
unsigned index; /* index in current buffer */
|
||||
unsigned counter; /* sample counter */
|
||||
unsigned scale; /* sample counter scale */
|
||||
unsigned sample_rate; /* sample rate */
|
||||
unsigned processed; /* samples processed */
|
||||
unsigned volume; /* volume for pc-speaker */
|
||||
char encoding; /* Ulaw, Alaw or linear */
|
||||
u_char current; /* current buffer */
|
||||
unsigned char oldval; /* old timer port value */
|
||||
char timer_on; /* is playback running */
|
||||
struct selinfo wsel; /* select/poll status */
|
||||
} pca_status;
|
||||
|
||||
static char buffer1[BUF_SIZE];
|
||||
static char buffer2[BUF_SIZE];
|
||||
static char buffer3[BUF_SIZE];
|
||||
static char volume_table[256];
|
||||
|
||||
static unsigned char ulaw_dsp[] = {
|
||||
3, 7, 11, 15, 19, 23, 27, 31,
|
||||
35, 39, 43, 47, 51, 55, 59, 63,
|
||||
66, 68, 70, 72, 74, 76, 78, 80,
|
||||
82, 84, 86, 88, 90, 92, 94, 96,
|
||||
98, 99, 100, 101, 102, 103, 104, 105,
|
||||
106, 107, 108, 109, 110, 111, 112, 113,
|
||||
113, 114, 114, 115, 115, 116, 116, 117,
|
||||
117, 118, 118, 119, 119, 120, 120, 121,
|
||||
121, 121, 122, 122, 122, 122, 123, 123,
|
||||
123, 123, 124, 124, 124, 124, 125, 125,
|
||||
125, 125, 125, 125, 126, 126, 126, 126,
|
||||
126, 126, 126, 126, 127, 127, 127, 127,
|
||||
127, 127, 127, 127, 127, 127, 127, 127,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
253, 249, 245, 241, 237, 233, 229, 225,
|
||||
221, 217, 213, 209, 205, 201, 197, 193,
|
||||
190, 188, 186, 184, 182, 180, 178, 176,
|
||||
174, 172, 170, 168, 166, 164, 162, 160,
|
||||
158, 157, 156, 155, 154, 153, 152, 151,
|
||||
150, 149, 148, 147, 146, 145, 144, 143,
|
||||
143, 142, 142, 141, 141, 140, 140, 139,
|
||||
139, 138, 138, 137, 137, 136, 136, 135,
|
||||
135, 135, 134, 134, 134, 134, 133, 133,
|
||||
133, 133, 132, 132, 132, 132, 131, 131,
|
||||
131, 131, 131, 131, 130, 130, 130, 130,
|
||||
130, 130, 130, 130, 129, 129, 129, 129,
|
||||
129, 129, 129, 129, 129, 129, 129, 129,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
};
|
||||
|
||||
static unsigned char alaw_linear[] = {
|
||||
45, 214, 122, 133, 0, 255, 107, 149,
|
||||
86, 171, 126, 129, 0, 255, 117, 138,
|
||||
13, 246, 120, 135, 0, 255, 99, 157,
|
||||
70, 187, 124, 131, 0, 255, 113, 142,
|
||||
61, 198, 123, 132, 0, 255, 111, 145,
|
||||
94, 163, 127, 128, 0, 255, 119, 136,
|
||||
29, 230, 121, 134, 0, 255, 103, 153,
|
||||
78, 179, 125, 130, 0, 255, 115, 140,
|
||||
37, 222, 122, 133, 0, 255, 105, 151,
|
||||
82, 175, 126, 129, 0, 255, 116, 139,
|
||||
5, 254, 120, 135, 0, 255, 97, 159,
|
||||
66, 191, 124, 131, 0, 255, 112, 143,
|
||||
53, 206, 123, 132, 0, 255, 109, 147,
|
||||
90, 167, 127, 128, 0, 255, 118, 137,
|
||||
21, 238, 121, 134, 0, 255, 101, 155,
|
||||
74, 183, 125, 130, 0, 255, 114, 141,
|
||||
49, 210, 123, 133, 0, 255, 108, 148,
|
||||
88, 169, 127, 129, 0, 255, 118, 138,
|
||||
17, 242, 121, 135, 0, 255, 100, 156,
|
||||
72, 185, 125, 131, 0, 255, 114, 142,
|
||||
64, 194, 124, 132, 0, 255, 112, 144,
|
||||
96, 161, 128, 128, 1, 255, 120, 136,
|
||||
33, 226, 122, 134, 0, 255, 104, 152,
|
||||
80, 177, 126, 130, 0, 255, 116, 140,
|
||||
41, 218, 122, 133, 0, 255, 106, 150,
|
||||
84, 173, 126, 129, 0, 255, 117, 139,
|
||||
9, 250, 120, 135, 0, 255, 98, 158,
|
||||
68, 189, 124, 131, 0, 255, 113, 143,
|
||||
57, 202, 123, 132, 0, 255, 110, 146,
|
||||
92, 165, 127, 128, 0, 255, 119, 137,
|
||||
25, 234, 121, 134, 0, 255, 102, 154,
|
||||
76, 181, 125, 130, 0, 255, 115, 141,
|
||||
};
|
||||
|
||||
static int pca_sleep = 0;
|
||||
|
||||
static void pcaintr(struct clockframe *frame);
|
||||
|
||||
static d_open_t pcaopen;
|
||||
static d_close_t pcaclose;
|
||||
static d_write_t pcawrite;
|
||||
static d_ioctl_t pcaioctl;
|
||||
static d_poll_t pcapoll;
|
||||
|
||||
#define CDEV_MAJOR 24
|
||||
static struct cdevsw pca_cdevsw = {
|
||||
.d_open = pcaopen,
|
||||
.d_close = pcaclose,
|
||||
.d_write = pcawrite,
|
||||
.d_ioctl = pcaioctl,
|
||||
.d_poll = pcapoll,
|
||||
.d_name = "pca",
|
||||
.d_maj = CDEV_MAJOR,
|
||||
};
|
||||
|
||||
static void pca_continue(void);
|
||||
static void pca_init(void);
|
||||
static void pca_pause(void);
|
||||
|
||||
static void
|
||||
conv(const unsigned char *table, unsigned char *buff, unsigned n)
|
||||
{
|
||||
unsigned i;
|
||||
|
||||
for (i = 0; i < n; i++)
|
||||
buff[i] = table[buff[i]];
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_volume(int volume)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
for (i=0; i<256; i++) {
|
||||
j = ((i-128)*volume)/25;
|
||||
/* XXX
|
||||
j = ((i-128)*volume)/100;
|
||||
*/
|
||||
if (j<-128)
|
||||
j = -128;
|
||||
if (j>127)
|
||||
j = 127;
|
||||
volume_table[i] = (((255-(j + 128))/4)+1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_init(void)
|
||||
{
|
||||
pca_status.open = 0;
|
||||
pca_status.queries = 0;
|
||||
pca_status.timer_on = 0;
|
||||
pca_status.buf[0] = (unsigned char *)&buffer1[0];
|
||||
pca_status.buf[1] = (unsigned char *)&buffer2[0];
|
||||
pca_status.buf[2] = (unsigned char *)&buffer3[0];
|
||||
pca_status.buffer = pca_status.buf[0];
|
||||
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
|
||||
pca_status.current = 0;
|
||||
pca_status.sample_rate = SAMPLE_RATE;
|
||||
pca_status.scale = (pca_status.sample_rate << 8) / INTERRUPT_RATE;
|
||||
pca_status.encoding = AUDIO_ENCODING_ULAW;
|
||||
pca_status.volume = 100;
|
||||
|
||||
pca_volume(pca_status.volume);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pca_start(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
int rv = 0;
|
||||
|
||||
/* use the first buffer */
|
||||
pca_status.current = 0;
|
||||
pca_status.index = 0;
|
||||
pca_status.counter = 0;
|
||||
pca_status.buffer = pca_status.buf[pca_status.current];
|
||||
pca_status.oldval = inb(IO_PPI) | 0x03;
|
||||
/* acquire the timers */
|
||||
if (acquire_timer2(TIMER_LSB|TIMER_ONESHOT))
|
||||
rv = -1;
|
||||
else if (acquire_timer0(INTERRUPT_RATE, pcaintr)) {
|
||||
release_timer2();
|
||||
rv = -1;
|
||||
} else
|
||||
pca_status.timer_on = 1;
|
||||
|
||||
splx(x);
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_stop(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
|
||||
/* release the timers */
|
||||
release_timer0();
|
||||
release_timer2();
|
||||
/* reset the buffer */
|
||||
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
|
||||
pca_status.index = 0;
|
||||
pca_status.counter = 0;
|
||||
pca_status.current = 0;
|
||||
pca_status.buffer = pca_status.buf[pca_status.current];
|
||||
pca_status.timer_on = 0;
|
||||
splx(x);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_pause(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
|
||||
release_timer0();
|
||||
release_timer2();
|
||||
pca_status.timer_on = 0;
|
||||
splx(x);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_continue(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
|
||||
pca_status.oldval = inb(IO_PPI) | 0x03;
|
||||
acquire_timer2(TIMER_LSB|TIMER_ONESHOT);
|
||||
acquire_timer0(INTERRUPT_RATE, pcaintr);
|
||||
pca_status.timer_on = 1;
|
||||
splx(x);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pca_wait(void)
|
||||
{
|
||||
int error, x;
|
||||
|
||||
if (!pca_status.timer_on)
|
||||
return 0;
|
||||
|
||||
while (pca_status.in_use[0] || pca_status.in_use[1] ||
|
||||
pca_status.in_use[2]) {
|
||||
x = spltty();
|
||||
pca_sleep = 1;
|
||||
error = tsleep(&pca_sleep, PZERO|PCATCH, "pca_drain", 0);
|
||||
pca_sleep = 0;
|
||||
splx(x);
|
||||
if (error != 0 && error != ERESTART) {
|
||||
pca_stop();
|
||||
return error;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static struct isa_pnp_id pca_ids[] = {
|
||||
{0x0008d041, "AT-style speaker sound"}, /* PNP0800 */
|
||||
{0}
|
||||
};
|
||||
|
||||
static int
|
||||
pcaprobe(device_t dev)
|
||||
{
|
||||
/* Check isapnp ids */
|
||||
return ISA_PNP_PROBE(device_get_parent(dev), dev, pca_ids);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcaattach(device_t dev)
|
||||
{
|
||||
pca_init();
|
||||
make_dev(&pca_cdevsw, 0, 0, 0, 0600, "pcaudio");
|
||||
make_dev(&pca_cdevsw, 128, 0, 0, 0600, "pcaudioctl");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static device_method_t pca_methods[] = {
|
||||
DEVMETHOD(device_probe, pcaprobe),
|
||||
DEVMETHOD(device_attach, pcaattach),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t pca_driver = {
|
||||
"pca",
|
||||
pca_methods,
|
||||
1
|
||||
};
|
||||
|
||||
static devclass_t pca_devclass;
|
||||
|
||||
DRIVER_MODULE(pca, isa, pca_driver, pca_devclass, 0, 0);
|
||||
|
||||
|
||||
static int
|
||||
pcaopen(dev_t dev, int flags, int fmt, struct thread *td)
|
||||
{
|
||||
/* audioctl device can always be opened */
|
||||
if (minor(dev) == 128)
|
||||
return 0;
|
||||
if (minor(dev) > 0)
|
||||
return ENXIO;
|
||||
|
||||
/* audio device can only be open by one process */
|
||||
if (pca_status.open) {
|
||||
pca_status.queries = 1;
|
||||
return EBUSY;
|
||||
}
|
||||
pca_status.buffer = pca_status.buf[0];
|
||||
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
|
||||
pca_status.timer_on = 0;
|
||||
pca_status.open = 1;
|
||||
pca_status.processed = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcaclose(dev_t dev, int flags, int fmt, struct thread *td)
|
||||
{
|
||||
/* audioctl device can always be closed */
|
||||
if (minor(dev) == 128)
|
||||
return 0;
|
||||
if (minor(dev) > 0)
|
||||
return ENXIO;
|
||||
/* audio device close drains all output and restores timers */
|
||||
pca_wait();
|
||||
pca_stop();
|
||||
pca_status.open = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcawrite(dev_t dev, struct uio *uio, int flag)
|
||||
{
|
||||
int count, error, which, x;
|
||||
|
||||
/* only audio device can be written */
|
||||
if (minor(dev) > 0)
|
||||
return ENXIO;
|
||||
|
||||
while ((count = min(BUF_SIZE, uio->uio_resid)) > 0) {
|
||||
if (pca_status.in_use[0] && pca_status.in_use[1] &&
|
||||
pca_status.in_use[2]) {
|
||||
if (flag & IO_NDELAY)
|
||||
return EWOULDBLOCK;
|
||||
x = spltty();
|
||||
pca_sleep = 1;
|
||||
error = tsleep(&pca_sleep, PZERO|PCATCH, "pca_wait", 0);
|
||||
pca_sleep = 0;
|
||||
splx(x);
|
||||
if (error != 0 && error != ERESTART) {
|
||||
pca_stop();
|
||||
return error;
|
||||
}
|
||||
}
|
||||
if (!pca_status.in_use[0])
|
||||
which = 0;
|
||||
else if (!pca_status.in_use[1])
|
||||
which = 1;
|
||||
else
|
||||
which = 2;
|
||||
if (count && !pca_status.in_use[which]) {
|
||||
uiomove(pca_status.buf[which], count, uio);
|
||||
pca_status.processed += count;
|
||||
switch (pca_status.encoding) {
|
||||
case AUDIO_ENCODING_ULAW:
|
||||
conv(ulaw_dsp, pca_status.buf[which], count);
|
||||
break;
|
||||
|
||||
case AUDIO_ENCODING_ALAW:
|
||||
conv(alaw_linear, pca_status.buf[which], count);
|
||||
break;
|
||||
|
||||
case AUDIO_ENCODING_RAW:
|
||||
break;
|
||||
}
|
||||
pca_status.in_use[which] = count;
|
||||
if (!pca_status.timer_on)
|
||||
if (pca_start())
|
||||
return EBUSY;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcaioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
|
||||
{
|
||||
audio_info_t *auptr;
|
||||
|
||||
switch(cmd) {
|
||||
|
||||
case AUDIO_GETINFO:
|
||||
auptr = (audio_info_t *)data;
|
||||
auptr->play.sample_rate = pca_status.sample_rate;
|
||||
auptr->play.channels = 1;
|
||||
auptr->play.precision = 8;
|
||||
auptr->play.encoding = pca_status.encoding;
|
||||
|
||||
auptr->play.gain = pca_status.volume;
|
||||
auptr->play.port = 0;
|
||||
|
||||
auptr->play.samples = pca_status.processed;
|
||||
auptr->play.eof = 0;
|
||||
auptr->play.pause = !pca_status.timer_on;
|
||||
auptr->play.error = 0;
|
||||
auptr->play.waiting = pca_status.queries;
|
||||
|
||||
auptr->play.open = pca_status.open;
|
||||
auptr->play.active = pca_status.timer_on;
|
||||
return 0;
|
||||
|
||||
case AUDIO_SETINFO:
|
||||
auptr = (audio_info_t *)data;
|
||||
if (auptr->play.sample_rate != (unsigned int)~0) {
|
||||
pca_status.sample_rate = auptr->play.sample_rate;
|
||||
pca_status.scale =
|
||||
(pca_status.sample_rate << 8) / INTERRUPT_RATE;
|
||||
}
|
||||
if (auptr->play.encoding != (unsigned int)~0) {
|
||||
pca_status.encoding = auptr->play.encoding;
|
||||
}
|
||||
if (auptr->play.gain != (unsigned int)~0) {
|
||||
pca_status.volume = auptr->play.gain;
|
||||
pca_volume(pca_status.volume);
|
||||
}
|
||||
if (auptr->play.pause != (unsigned char)~0) {
|
||||
if (auptr->play.pause)
|
||||
pca_pause();
|
||||
else
|
||||
pca_continue();
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
case AUDIO_DRAIN:
|
||||
case AUDIO_COMPAT_DRAIN:
|
||||
return pca_wait();
|
||||
|
||||
case AUDIO_FLUSH:
|
||||
case AUDIO_COMPAT_FLUSH:
|
||||
pca_stop();
|
||||
return 0;
|
||||
case FIONBIO:
|
||||
return 0;
|
||||
}
|
||||
return ENXIO;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pcaintr(struct clockframe *frame)
|
||||
{
|
||||
if (pca_status.index < pca_status.in_use[pca_status.current]) {
|
||||
disable_intr();
|
||||
__asm__("outb %0,$0x61\n"
|
||||
"andb $0xFE,%0\n"
|
||||
"outb %0,$0x61"
|
||||
: : "a" ((char)pca_status.oldval) );
|
||||
__asm__("xlatb\n"
|
||||
"outb %0,$0x42"
|
||||
: : "a" ((char)pca_status.buffer[pca_status.index]),
|
||||
"b" (volume_table) );
|
||||
enable_intr();
|
||||
pca_status.counter += pca_status.scale;
|
||||
pca_status.index = (pca_status.counter >> 8);
|
||||
}
|
||||
if (pca_status.index >= pca_status.in_use[pca_status.current]) {
|
||||
pca_status.index = pca_status.counter = 0;
|
||||
pca_status.in_use[pca_status.current] = 0;
|
||||
pca_status.current++;
|
||||
if (pca_status.current > 2)
|
||||
pca_status.current = 0;
|
||||
pca_status.buffer = pca_status.buf[pca_status.current];
|
||||
if (pca_sleep)
|
||||
wakeup(&pca_sleep);
|
||||
if (SEL_WAITING(&pca_status.wsel))
|
||||
selwakeup(&pca_status.wsel);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcapoll(dev_t dev, int events, struct thread *td)
|
||||
{
|
||||
int s;
|
||||
int revents = 0;
|
||||
|
||||
s = spltty();
|
||||
|
||||
if (events & (POLLOUT | POLLWRNORM)) {
|
||||
if (!pca_status.in_use[0] || !pca_status.in_use[1] ||
|
||||
!pca_status.in_use[2])
|
||||
revents |= events & (POLLOUT | POLLWRNORM);
|
||||
else
|
||||
selrecord(td, &pca_status.wsel);
|
||||
}
|
||||
splx(s);
|
||||
return (revents);
|
||||
}
|
||||
@ -473,15 +473,6 @@ hint.wl.0.port="0x300"
|
||||
options WLCACHE # enables the signal-strength cache
|
||||
options WLDEBUG # enables verbose debugging output
|
||||
|
||||
#
|
||||
# Audio drivers: `pca'
|
||||
#
|
||||
# pca: PCM audio through your PC speaker
|
||||
|
||||
device pca
|
||||
hint.pca.0.at="isa"
|
||||
hint.pca.0.port="0x040"
|
||||
|
||||
#
|
||||
# SCSI host adapters:
|
||||
#
|
||||
|
||||
@ -1,604 +0,0 @@
|
||||
/*-
|
||||
* Copyright (c) 1994-1998 Sen Schmidt
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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,
|
||||
* without modification, immediately at the beginning of the file.
|
||||
* 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.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/filio.h>
|
||||
#include <sys/poll.h>
|
||||
#include <sys/vnode.h>
|
||||
|
||||
#include <machine/clock.h>
|
||||
#include <machine/pcaudioio.h>
|
||||
|
||||
#ifdef PC98
|
||||
#include <pc98/pc98/pc98.h>
|
||||
#else
|
||||
#include <isa/isareg.h>
|
||||
#endif
|
||||
#include <isa/isavar.h>
|
||||
#include <i386/isa/timerreg.h>
|
||||
|
||||
#define BUF_SIZE 8192
|
||||
#define SAMPLE_RATE 8000
|
||||
#define INTERRUPT_RATE 16000
|
||||
|
||||
static struct pca_status {
|
||||
char open; /* device open */
|
||||
char queries; /* did others try opening */
|
||||
unsigned char *buf[3]; /* triple buffering */
|
||||
unsigned char *buffer; /* current buffer ptr */
|
||||
unsigned in_use[3]; /* buffers fill */
|
||||
unsigned index; /* index in current buffer */
|
||||
unsigned counter; /* sample counter */
|
||||
unsigned scale; /* sample counter scale */
|
||||
unsigned sample_rate; /* sample rate */
|
||||
unsigned processed; /* samples processed */
|
||||
unsigned volume; /* volume for pc-speaker */
|
||||
char encoding; /* Ulaw, Alaw or linear */
|
||||
u_char current; /* current buffer */
|
||||
unsigned char oldval; /* old timer port value */
|
||||
char timer_on; /* is playback running */
|
||||
struct selinfo wsel; /* select/poll status */
|
||||
} pca_status;
|
||||
|
||||
static char buffer1[BUF_SIZE];
|
||||
static char buffer2[BUF_SIZE];
|
||||
static char buffer3[BUF_SIZE];
|
||||
static char volume_table[256];
|
||||
|
||||
static unsigned char ulaw_dsp[] = {
|
||||
3, 7, 11, 15, 19, 23, 27, 31,
|
||||
35, 39, 43, 47, 51, 55, 59, 63,
|
||||
66, 68, 70, 72, 74, 76, 78, 80,
|
||||
82, 84, 86, 88, 90, 92, 94, 96,
|
||||
98, 99, 100, 101, 102, 103, 104, 105,
|
||||
106, 107, 108, 109, 110, 111, 112, 113,
|
||||
113, 114, 114, 115, 115, 116, 116, 117,
|
||||
117, 118, 118, 119, 119, 120, 120, 121,
|
||||
121, 121, 122, 122, 122, 122, 123, 123,
|
||||
123, 123, 124, 124, 124, 124, 125, 125,
|
||||
125, 125, 125, 125, 126, 126, 126, 126,
|
||||
126, 126, 126, 126, 127, 127, 127, 127,
|
||||
127, 127, 127, 127, 127, 127, 127, 127,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
253, 249, 245, 241, 237, 233, 229, 225,
|
||||
221, 217, 213, 209, 205, 201, 197, 193,
|
||||
190, 188, 186, 184, 182, 180, 178, 176,
|
||||
174, 172, 170, 168, 166, 164, 162, 160,
|
||||
158, 157, 156, 155, 154, 153, 152, 151,
|
||||
150, 149, 148, 147, 146, 145, 144, 143,
|
||||
143, 142, 142, 141, 141, 140, 140, 139,
|
||||
139, 138, 138, 137, 137, 136, 136, 135,
|
||||
135, 135, 134, 134, 134, 134, 133, 133,
|
||||
133, 133, 132, 132, 132, 132, 131, 131,
|
||||
131, 131, 131, 131, 130, 130, 130, 130,
|
||||
130, 130, 130, 130, 129, 129, 129, 129,
|
||||
129, 129, 129, 129, 129, 129, 129, 129,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
128, 128, 128, 128, 128, 128, 128, 128,
|
||||
};
|
||||
|
||||
static unsigned char alaw_linear[] = {
|
||||
45, 214, 122, 133, 0, 255, 107, 149,
|
||||
86, 171, 126, 129, 0, 255, 117, 138,
|
||||
13, 246, 120, 135, 0, 255, 99, 157,
|
||||
70, 187, 124, 131, 0, 255, 113, 142,
|
||||
61, 198, 123, 132, 0, 255, 111, 145,
|
||||
94, 163, 127, 128, 0, 255, 119, 136,
|
||||
29, 230, 121, 134, 0, 255, 103, 153,
|
||||
78, 179, 125, 130, 0, 255, 115, 140,
|
||||
37, 222, 122, 133, 0, 255, 105, 151,
|
||||
82, 175, 126, 129, 0, 255, 116, 139,
|
||||
5, 254, 120, 135, 0, 255, 97, 159,
|
||||
66, 191, 124, 131, 0, 255, 112, 143,
|
||||
53, 206, 123, 132, 0, 255, 109, 147,
|
||||
90, 167, 127, 128, 0, 255, 118, 137,
|
||||
21, 238, 121, 134, 0, 255, 101, 155,
|
||||
74, 183, 125, 130, 0, 255, 114, 141,
|
||||
49, 210, 123, 133, 0, 255, 108, 148,
|
||||
88, 169, 127, 129, 0, 255, 118, 138,
|
||||
17, 242, 121, 135, 0, 255, 100, 156,
|
||||
72, 185, 125, 131, 0, 255, 114, 142,
|
||||
64, 194, 124, 132, 0, 255, 112, 144,
|
||||
96, 161, 128, 128, 1, 255, 120, 136,
|
||||
33, 226, 122, 134, 0, 255, 104, 152,
|
||||
80, 177, 126, 130, 0, 255, 116, 140,
|
||||
41, 218, 122, 133, 0, 255, 106, 150,
|
||||
84, 173, 126, 129, 0, 255, 117, 139,
|
||||
9, 250, 120, 135, 0, 255, 98, 158,
|
||||
68, 189, 124, 131, 0, 255, 113, 143,
|
||||
57, 202, 123, 132, 0, 255, 110, 146,
|
||||
92, 165, 127, 128, 0, 255, 119, 137,
|
||||
25, 234, 121, 134, 0, 255, 102, 154,
|
||||
76, 181, 125, 130, 0, 255, 115, 141,
|
||||
};
|
||||
|
||||
static int pca_sleep = 0;
|
||||
|
||||
static void pcaintr(struct clockframe *frame);
|
||||
|
||||
static d_open_t pcaopen;
|
||||
static d_close_t pcaclose;
|
||||
static d_write_t pcawrite;
|
||||
static d_ioctl_t pcaioctl;
|
||||
static d_poll_t pcapoll;
|
||||
|
||||
#define CDEV_MAJOR 24
|
||||
static struct cdevsw pca_cdevsw = {
|
||||
.d_open = pcaopen,
|
||||
.d_close = pcaclose,
|
||||
.d_write = pcawrite,
|
||||
.d_ioctl = pcaioctl,
|
||||
.d_poll = pcapoll,
|
||||
.d_name = "pca",
|
||||
.d_maj = CDEV_MAJOR,
|
||||
};
|
||||
|
||||
static void pca_continue(void);
|
||||
static void pca_init(void);
|
||||
static void pca_pause(void);
|
||||
|
||||
static void
|
||||
conv(const unsigned char *table, unsigned char *buff, unsigned n)
|
||||
{
|
||||
unsigned i;
|
||||
|
||||
for (i = 0; i < n; i++)
|
||||
buff[i] = table[buff[i]];
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_volume(int volume)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
for (i=0; i<256; i++) {
|
||||
j = ((i-128)*volume)/25;
|
||||
/* XXX
|
||||
j = ((i-128)*volume)/100;
|
||||
*/
|
||||
if (j<-128)
|
||||
j = -128;
|
||||
if (j>127)
|
||||
j = 127;
|
||||
volume_table[i] = (((255-(j + 128))/4)+1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_init(void)
|
||||
{
|
||||
pca_status.open = 0;
|
||||
pca_status.queries = 0;
|
||||
pca_status.timer_on = 0;
|
||||
pca_status.buf[0] = (unsigned char *)&buffer1[0];
|
||||
pca_status.buf[1] = (unsigned char *)&buffer2[0];
|
||||
pca_status.buf[2] = (unsigned char *)&buffer3[0];
|
||||
pca_status.buffer = pca_status.buf[0];
|
||||
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
|
||||
pca_status.current = 0;
|
||||
pca_status.sample_rate = SAMPLE_RATE;
|
||||
pca_status.scale = (pca_status.sample_rate << 8) / INTERRUPT_RATE;
|
||||
pca_status.encoding = AUDIO_ENCODING_ULAW;
|
||||
pca_status.volume = 100;
|
||||
|
||||
pca_volume(pca_status.volume);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pca_start(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
int rv = 0;
|
||||
|
||||
/* use the first buffer */
|
||||
pca_status.current = 0;
|
||||
pca_status.index = 0;
|
||||
pca_status.counter = 0;
|
||||
pca_status.buffer = pca_status.buf[pca_status.current];
|
||||
#ifdef PC98
|
||||
pca_status.oldval = inb(IO_PPI) & ~0x08;
|
||||
#else
|
||||
pca_status.oldval = inb(IO_PPI) | 0x03;
|
||||
#endif
|
||||
/* acquire the timers */
|
||||
#ifdef PC98
|
||||
if (acquire_timer1(TIMER_LSB|TIMER_ONESHOT))
|
||||
#else
|
||||
if (acquire_timer2(TIMER_LSB|TIMER_ONESHOT))
|
||||
#endif
|
||||
rv = -1;
|
||||
else if (acquire_timer0(INTERRUPT_RATE, pcaintr)) {
|
||||
#ifdef PC98
|
||||
release_timer1();
|
||||
#else
|
||||
release_timer2();
|
||||
#endif
|
||||
rv = -1;
|
||||
} else
|
||||
pca_status.timer_on = 1;
|
||||
|
||||
splx(x);
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_stop(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
|
||||
/* release the timers */
|
||||
release_timer0();
|
||||
#ifdef PC98
|
||||
release_timer1();
|
||||
#else
|
||||
release_timer2();
|
||||
#endif
|
||||
/* reset the buffer */
|
||||
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
|
||||
pca_status.index = 0;
|
||||
pca_status.counter = 0;
|
||||
pca_status.current = 0;
|
||||
pca_status.buffer = pca_status.buf[pca_status.current];
|
||||
pca_status.timer_on = 0;
|
||||
splx(x);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_pause(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
|
||||
release_timer0();
|
||||
#ifdef PC98
|
||||
release_timer1();
|
||||
#else
|
||||
release_timer2();
|
||||
#endif
|
||||
pca_status.timer_on = 0;
|
||||
splx(x);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pca_continue(void)
|
||||
{
|
||||
int x = splhigh();
|
||||
|
||||
#ifdef PC98
|
||||
pca_status.oldval = inb(IO_PPI) & ~0x08;
|
||||
acquire_timer1(TIMER_LSB|TIMER_ONESHOT);
|
||||
#else
|
||||
pca_status.oldval = inb(IO_PPI) | 0x03;
|
||||
acquire_timer2(TIMER_LSB|TIMER_ONESHOT);
|
||||
#endif
|
||||
acquire_timer0(INTERRUPT_RATE, pcaintr);
|
||||
pca_status.timer_on = 1;
|
||||
splx(x);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pca_wait(void)
|
||||
{
|
||||
int error, x;
|
||||
|
||||
if (!pca_status.timer_on)
|
||||
return 0;
|
||||
|
||||
while (pca_status.in_use[0] || pca_status.in_use[1] ||
|
||||
pca_status.in_use[2]) {
|
||||
x = spltty();
|
||||
pca_sleep = 1;
|
||||
error = tsleep(&pca_sleep, PZERO|PCATCH, "pca_drain", 0);
|
||||
pca_sleep = 0;
|
||||
splx(x);
|
||||
if (error != 0 && error != ERESTART) {
|
||||
pca_stop();
|
||||
return error;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static struct isa_pnp_id pca_ids[] = {
|
||||
{0x0008d041, "AT-style speaker sound"}, /* PNP0800 */
|
||||
{0}
|
||||
};
|
||||
|
||||
static int
|
||||
pcaprobe(device_t dev)
|
||||
{
|
||||
/* Check isapnp ids */
|
||||
return ISA_PNP_PROBE(device_get_parent(dev), dev, pca_ids);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcaattach(device_t dev)
|
||||
{
|
||||
pca_init();
|
||||
make_dev(&pca_cdevsw, 0, 0, 0, 0600, "pcaudio");
|
||||
make_dev(&pca_cdevsw, 128, 0, 0, 0600, "pcaudioctl");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static device_method_t pca_methods[] = {
|
||||
DEVMETHOD(device_probe, pcaprobe),
|
||||
DEVMETHOD(device_attach, pcaattach),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t pca_driver = {
|
||||
"pca",
|
||||
pca_methods,
|
||||
1
|
||||
};
|
||||
|
||||
static devclass_t pca_devclass;
|
||||
|
||||
DRIVER_MODULE(pca, isa, pca_driver, pca_devclass, 0, 0);
|
||||
|
||||
|
||||
static int
|
||||
pcaopen(dev_t dev, int flags, int fmt, struct thread *td)
|
||||
{
|
||||
/* audioctl device can always be opened */
|
||||
if (minor(dev) == 128)
|
||||
return 0;
|
||||
if (minor(dev) > 0)
|
||||
return ENXIO;
|
||||
|
||||
/* audio device can only be open by one process */
|
||||
if (pca_status.open) {
|
||||
pca_status.queries = 1;
|
||||
return EBUSY;
|
||||
}
|
||||
pca_status.buffer = pca_status.buf[0];
|
||||
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
|
||||
pca_status.timer_on = 0;
|
||||
pca_status.open = 1;
|
||||
pca_status.processed = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcaclose(dev_t dev, int flags, int fmt, struct thread *td)
|
||||
{
|
||||
/* audioctl device can always be closed */
|
||||
if (minor(dev) == 128)
|
||||
return 0;
|
||||
if (minor(dev) > 0)
|
||||
return ENXIO;
|
||||
/* audio device close drains all output and restores timers */
|
||||
pca_wait();
|
||||
pca_stop();
|
||||
pca_status.open = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcawrite(dev_t dev, struct uio *uio, int flag)
|
||||
{
|
||||
int count, error, which, x;
|
||||
|
||||
/* only audio device can be written */
|
||||
if (minor(dev) > 0)
|
||||
return ENXIO;
|
||||
|
||||
while ((count = min(BUF_SIZE, uio->uio_resid)) > 0) {
|
||||
if (pca_status.in_use[0] && pca_status.in_use[1] &&
|
||||
pca_status.in_use[2]) {
|
||||
if (flag & IO_NDELAY)
|
||||
return EWOULDBLOCK;
|
||||
x = spltty();
|
||||
pca_sleep = 1;
|
||||
error = tsleep(&pca_sleep, PZERO|PCATCH, "pca_wait", 0);
|
||||
pca_sleep = 0;
|
||||
splx(x);
|
||||
if (error != 0 && error != ERESTART) {
|
||||
pca_stop();
|
||||
return error;
|
||||
}
|
||||
}
|
||||
if (!pca_status.in_use[0])
|
||||
which = 0;
|
||||
else if (!pca_status.in_use[1])
|
||||
which = 1;
|
||||
else
|
||||
which = 2;
|
||||
if (count && !pca_status.in_use[which]) {
|
||||
uiomove(pca_status.buf[which], count, uio);
|
||||
pca_status.processed += count;
|
||||
switch (pca_status.encoding) {
|
||||
case AUDIO_ENCODING_ULAW:
|
||||
conv(ulaw_dsp, pca_status.buf[which], count);
|
||||
break;
|
||||
|
||||
case AUDIO_ENCODING_ALAW:
|
||||
conv(alaw_linear, pca_status.buf[which], count);
|
||||
break;
|
||||
|
||||
case AUDIO_ENCODING_RAW:
|
||||
break;
|
||||
}
|
||||
pca_status.in_use[which] = count;
|
||||
if (!pca_status.timer_on)
|
||||
if (pca_start())
|
||||
return EBUSY;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcaioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
|
||||
{
|
||||
audio_info_t *auptr;
|
||||
|
||||
switch(cmd) {
|
||||
|
||||
case AUDIO_GETINFO:
|
||||
auptr = (audio_info_t *)data;
|
||||
auptr->play.sample_rate = pca_status.sample_rate;
|
||||
auptr->play.channels = 1;
|
||||
auptr->play.precision = 8;
|
||||
auptr->play.encoding = pca_status.encoding;
|
||||
|
||||
auptr->play.gain = pca_status.volume;
|
||||
auptr->play.port = 0;
|
||||
|
||||
auptr->play.samples = pca_status.processed;
|
||||
auptr->play.eof = 0;
|
||||
auptr->play.pause = !pca_status.timer_on;
|
||||
auptr->play.error = 0;
|
||||
auptr->play.waiting = pca_status.queries;
|
||||
|
||||
auptr->play.open = pca_status.open;
|
||||
auptr->play.active = pca_status.timer_on;
|
||||
return 0;
|
||||
|
||||
case AUDIO_SETINFO:
|
||||
auptr = (audio_info_t *)data;
|
||||
if (auptr->play.sample_rate != (unsigned int)~0) {
|
||||
pca_status.sample_rate = auptr->play.sample_rate;
|
||||
pca_status.scale =
|
||||
(pca_status.sample_rate << 8) / INTERRUPT_RATE;
|
||||
}
|
||||
if (auptr->play.encoding != (unsigned int)~0) {
|
||||
pca_status.encoding = auptr->play.encoding;
|
||||
}
|
||||
if (auptr->play.gain != (unsigned int)~0) {
|
||||
pca_status.volume = auptr->play.gain;
|
||||
pca_volume(pca_status.volume);
|
||||
}
|
||||
if (auptr->play.pause != (unsigned char)~0) {
|
||||
if (auptr->play.pause)
|
||||
pca_pause();
|
||||
else
|
||||
pca_continue();
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
case AUDIO_DRAIN:
|
||||
case AUDIO_COMPAT_DRAIN:
|
||||
return pca_wait();
|
||||
|
||||
case AUDIO_FLUSH:
|
||||
case AUDIO_COMPAT_FLUSH:
|
||||
pca_stop();
|
||||
return 0;
|
||||
case FIONBIO:
|
||||
return 0;
|
||||
}
|
||||
return ENXIO;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
pcaintr(struct clockframe *frame)
|
||||
{
|
||||
if (pca_status.index < pca_status.in_use[pca_status.current]) {
|
||||
disable_intr();
|
||||
#ifdef PC98
|
||||
__asm__("outb %0,$0x35\n"
|
||||
"orb $0x08,%0\n"
|
||||
"outb %0,$0x35"
|
||||
#else
|
||||
__asm__("outb %0,$0x61\n"
|
||||
"andb $0xFE,%0\n"
|
||||
"outb %0,$0x61"
|
||||
#endif
|
||||
: : "a" ((char)pca_status.oldval) );
|
||||
__asm__("xlatb\n"
|
||||
#ifdef PC98
|
||||
"outb %0,%%dx"
|
||||
: : "a" ((char)pca_status.buffer[pca_status.index]),
|
||||
"b" (volume_table),
|
||||
"d" ((u_short)0x3fdb) );
|
||||
#else
|
||||
"outb %0,$0x42"
|
||||
: : "a" ((char)pca_status.buffer[pca_status.index]),
|
||||
"b" (volume_table) );
|
||||
#endif
|
||||
enable_intr();
|
||||
pca_status.counter += pca_status.scale;
|
||||
pca_status.index = (pca_status.counter >> 8);
|
||||
}
|
||||
if (pca_status.index >= pca_status.in_use[pca_status.current]) {
|
||||
pca_status.index = pca_status.counter = 0;
|
||||
pca_status.in_use[pca_status.current] = 0;
|
||||
pca_status.current++;
|
||||
if (pca_status.current > 2)
|
||||
pca_status.current = 0;
|
||||
pca_status.buffer = pca_status.buf[pca_status.current];
|
||||
if (pca_sleep)
|
||||
wakeup(&pca_sleep);
|
||||
if (SEL_WAITING(&pca_status.wsel))
|
||||
selwakeup(&pca_status.wsel);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
pcapoll(dev_t dev, int events, struct thread *td)
|
||||
{
|
||||
int s;
|
||||
int revents = 0;
|
||||
|
||||
s = spltty();
|
||||
|
||||
if (events & (POLLOUT | POLLWRNORM)) {
|
||||
if (!pca_status.in_use[0] || !pca_status.in_use[1] ||
|
||||
!pca_status.in_use[2])
|
||||
revents |= events & (POLLOUT | POLLWRNORM);
|
||||
else
|
||||
selrecord(td, &pca_status.wsel);
|
||||
}
|
||||
splx(s);
|
||||
return (revents);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user