--- /dev/null
+#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);
+#ifdef MODULE
+extern void dmasound_deinit(void);
+#else
+#define dmasound_deinit() do { } while (0)
+#endif
+
+/* 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);
+#ifdef MODULE
+ void (*irqcleanup)(void);
+#endif
+ 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_ */
Code Review / kvmfornfv.git / blobdiff