257 строки
7.8 KiB
C
257 строки
7.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _dmasound_h_
|
|
/*
|
|
* linux/sound/oss/dmasound/dmasound.h
|
|
*
|
|
*
|
|
* Minor numbers for the sound driver.
|
|
*
|
|
* Unfortunately Creative called the codec chip of SB as a DSP. For this
|
|
* reason the /dev/dsp is reserved for digitized audio use. There is a
|
|
* device for true DSP processors but it will be called something else.
|
|
* In v3.0 it's /dev/sndproc but this could be a temporary solution.
|
|
*/
|
|
#define _dmasound_h_
|
|
|
|
#include <linux/types.h>
|
|
|
|
#define SND_NDEVS 256 /* Number of supported devices */
|
|
#define SND_DEV_CTL 0 /* Control port /dev/mixer */
|
|
#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM
|
|
synthesizer and MIDI output) */
|
|
#define SND_DEV_MIDIN 2 /* Raw midi access */
|
|
#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
|
|
#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
|
|
#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
|
|
#define SND_DEV_STATUS 6 /* /dev/sndstat */
|
|
/* #7 not in use now. Was in 2.4. Free for use after v3.0. */
|
|
#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
|
|
#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
|
|
#define SND_DEV_PSS SND_DEV_SNDPROC
|
|
|
|
/* switch on various prinks */
|
|
#define DEBUG_DMASOUND 1
|
|
|
|
#define MAX_AUDIO_DEV 5
|
|
#define MAX_MIXER_DEV 4
|
|
#define MAX_SYNTH_DEV 3
|
|
#define MAX_MIDI_DEV 6
|
|
#define MAX_TIMER_DEV 3
|
|
|
|
#define MAX_CATCH_RADIUS 10
|
|
|
|
#define le2be16(x) (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
|
|
#define le2be16dbl(x) (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
|
|
|
|
#define IOCTL_IN(arg, ret) \
|
|
do { int error = get_user(ret, (int __user *)(arg)); \
|
|
if (error) return error; \
|
|
} while (0)
|
|
#define IOCTL_OUT(arg, ret) ioctl_return((int __user *)(arg), ret)
|
|
|
|
static inline int ioctl_return(int __user *addr, int value)
|
|
{
|
|
return value < 0 ? value : put_user(value, addr);
|
|
}
|
|
|
|
|
|
/*
|
|
* Configuration
|
|
*/
|
|
|
|
#undef HAS_8BIT_TABLES
|
|
|
|
#if defined(CONFIG_DMASOUND_ATARI) || defined(CONFIG_DMASOUND_ATARI_MODULE) ||\
|
|
defined(CONFIG_DMASOUND_PAULA) || defined(CONFIG_DMASOUND_PAULA_MODULE) ||\
|
|
defined(CONFIG_DMASOUND_Q40) || defined(CONFIG_DMASOUND_Q40_MODULE)
|
|
#define HAS_8BIT_TABLES
|
|
#define MIN_BUFFERS 4
|
|
#define MIN_BUFSIZE (1<<12) /* in bytes (- where does this come from ?) */
|
|
#define MIN_FRAG_SIZE 8 /* not 100% sure about this */
|
|
#define MAX_BUFSIZE (1<<17) /* Limit for Amiga is 128 kb */
|
|
#define MAX_FRAG_SIZE 15 /* allow *4 for mono-8 => stereo-16 (for multi) */
|
|
|
|
#else /* is pmac and multi is off */
|
|
|
|
#define MIN_BUFFERS 2
|
|
#define MIN_BUFSIZE (1<<8) /* in bytes */
|
|
#define MIN_FRAG_SIZE 8
|
|
#define MAX_BUFSIZE (1<<18) /* this is somewhat arbitrary for pmac */
|
|
#define MAX_FRAG_SIZE 16 /* need to allow *4 for mono-8 => stereo-16 */
|
|
#endif
|
|
|
|
#define DEFAULT_N_BUFFERS 4
|
|
#define DEFAULT_BUFF_SIZE (1<<15)
|
|
|
|
/*
|
|
* Initialization
|
|
*/
|
|
|
|
extern int dmasound_init(void);
|
|
extern void dmasound_deinit(void);
|
|
|
|
/* description of the set-up applies to either hard or soft settings */
|
|
|
|
typedef struct {
|
|
int format; /* AFMT_* */
|
|
int stereo; /* 0 = mono, 1 = stereo */
|
|
int size; /* 8/16 bit*/
|
|
int speed; /* speed */
|
|
} SETTINGS;
|
|
|
|
/*
|
|
* Machine definitions
|
|
*/
|
|
|
|
typedef struct {
|
|
const char *name;
|
|
const char *name2;
|
|
struct module *owner;
|
|
void *(*dma_alloc)(unsigned int, gfp_t);
|
|
void (*dma_free)(void *, unsigned int);
|
|
int (*irqinit)(void);
|
|
void (*irqcleanup)(void);
|
|
void (*init)(void);
|
|
void (*silence)(void);
|
|
int (*setFormat)(int);
|
|
int (*setVolume)(int);
|
|
int (*setBass)(int);
|
|
int (*setTreble)(int);
|
|
int (*setGain)(int);
|
|
void (*play)(void);
|
|
void (*record)(void); /* optional */
|
|
void (*mixer_init)(void); /* optional */
|
|
int (*mixer_ioctl)(u_int, u_long); /* optional */
|
|
int (*write_sq_setup)(void); /* optional */
|
|
int (*read_sq_setup)(void); /* optional */
|
|
int (*sq_open)(fmode_t); /* optional */
|
|
int (*state_info)(char *, size_t); /* optional */
|
|
void (*abort_read)(void); /* optional */
|
|
int min_dsp_speed;
|
|
int max_dsp_speed;
|
|
int version ;
|
|
int hardware_afmts ; /* OSS says we only return h'ware info */
|
|
/* when queried via SNDCTL_DSP_GETFMTS */
|
|
int capabilities ; /* low-level reply to SNDCTL_DSP_GETCAPS */
|
|
SETTINGS default_hard ; /* open() or init() should set something valid */
|
|
SETTINGS default_soft ; /* you can make it look like old OSS, if you want to */
|
|
} MACHINE;
|
|
|
|
/*
|
|
* Low level stuff
|
|
*/
|
|
|
|
typedef struct {
|
|
ssize_t (*ct_ulaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_alaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_s8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_u8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_s16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_u16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_s16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
ssize_t (*ct_u16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
|
|
} TRANS;
|
|
|
|
struct sound_settings {
|
|
MACHINE mach; /* machine dependent things */
|
|
SETTINGS hard; /* hardware settings */
|
|
SETTINGS soft; /* software settings */
|
|
SETTINGS dsp; /* /dev/dsp default settings */
|
|
TRANS *trans_write; /* supported translations */
|
|
int volume_left; /* volume (range is machine dependent) */
|
|
int volume_right;
|
|
int bass; /* tone (range is machine dependent) */
|
|
int treble;
|
|
int gain;
|
|
int minDev; /* minor device number currently open */
|
|
spinlock_t lock;
|
|
};
|
|
|
|
extern struct sound_settings dmasound;
|
|
|
|
#ifdef HAS_8BIT_TABLES
|
|
extern char dmasound_ulaw2dma8[];
|
|
extern char dmasound_alaw2dma8[];
|
|
#endif
|
|
|
|
/*
|
|
* Mid level stuff
|
|
*/
|
|
|
|
static inline int dmasound_set_volume(int volume)
|
|
{
|
|
return dmasound.mach.setVolume(volume);
|
|
}
|
|
|
|
static inline int dmasound_set_bass(int bass)
|
|
{
|
|
return dmasound.mach.setBass ? dmasound.mach.setBass(bass) : 50;
|
|
}
|
|
|
|
static inline int dmasound_set_treble(int treble)
|
|
{
|
|
return dmasound.mach.setTreble ? dmasound.mach.setTreble(treble) : 50;
|
|
}
|
|
|
|
static inline int dmasound_set_gain(int gain)
|
|
{
|
|
return dmasound.mach.setGain ? dmasound.mach.setGain(gain) : 100;
|
|
}
|
|
|
|
|
|
/*
|
|
* Sound queue stuff, the heart of the driver
|
|
*/
|
|
|
|
struct sound_queue {
|
|
/* buffers allocated for this queue */
|
|
int numBufs; /* real limits on what the user can have */
|
|
int bufSize; /* in bytes */
|
|
char **buffers;
|
|
|
|
/* current parameters */
|
|
int locked ; /* params cannot be modified when != 0 */
|
|
int user_frags ; /* user requests this many */
|
|
int user_frag_size ; /* of this size */
|
|
int max_count; /* actual # fragments <= numBufs */
|
|
int block_size; /* internal block size in bytes */
|
|
int max_active; /* in-use fragments <= max_count */
|
|
|
|
/* it shouldn't be necessary to declare any of these volatile */
|
|
int front, rear, count;
|
|
int rear_size;
|
|
/*
|
|
* The use of the playing field depends on the hardware
|
|
*
|
|
* Atari, PMac: The number of frames that are loaded/playing
|
|
*
|
|
* Amiga: Bit 0 is set: a frame is loaded
|
|
* Bit 1 is set: a frame is playing
|
|
*/
|
|
int active;
|
|
wait_queue_head_t action_queue, open_queue, sync_queue;
|
|
int non_blocking;
|
|
int busy, syncing, xruns, died;
|
|
};
|
|
|
|
#define WAKE_UP(queue) (wake_up_interruptible(&queue))
|
|
|
|
extern struct sound_queue dmasound_write_sq;
|
|
#define write_sq dmasound_write_sq
|
|
|
|
extern int dmasound_catchRadius;
|
|
#define catchRadius dmasound_catchRadius
|
|
|
|
/* define the value to be put in the byte-swap reg in mac-io
|
|
when we want it to swap for us.
|
|
*/
|
|
#define BS_VAL 1
|
|
|
|
#define SW_INPUT_VOLUME_SCALE 4
|
|
#define SW_INPUT_VOLUME_DEFAULT (128 / SW_INPUT_VOLUME_SCALE)
|
|
|
|
extern int expand_read_bal; /* Balance factor for reading */
|
|
extern uint software_input_volume; /* software implemented recording volume! */
|
|
|
|
#endif /* _dmasound_h_ */
|