1#ifndef _dmasound_h_ 2/* 3 * linux/sound/oss/dmasound/dmasound.h 4 * 5 * 6 * Minor numbers for the sound driver. 7 * 8 * Unfortunately Creative called the codec chip of SB as a DSP. For this 9 * reason the /dev/dsp is reserved for digitized audio use. There is a 10 * device for true DSP processors but it will be called something else. 11 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 12 */ 13#define _dmasound_h_ 14 15#include <linux/types.h> 16 17#define SND_NDEVS 256 /* Number of supported devices */ 18#define SND_DEV_CTL 0 /* Control port /dev/mixer */ 19#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM 20 synthesizer and MIDI output) */ 21#define SND_DEV_MIDIN 2 /* Raw midi access */ 22#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 23#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 24#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 25#define SND_DEV_STATUS 6 /* /dev/sndstat */ 26/* #7 not in use now. Was in 2.4. Free for use after v3.0. */ 27#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 28#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 29#define SND_DEV_PSS SND_DEV_SNDPROC 30 31/* switch on various prinks */ 32#define DEBUG_DMASOUND 1 33 34#define MAX_AUDIO_DEV 5 35#define MAX_MIXER_DEV 4 36#define MAX_SYNTH_DEV 3 37#define MAX_MIDI_DEV 6 38#define MAX_TIMER_DEV 3 39 40#define MAX_CATCH_RADIUS 10 41 42#define le2be16(x) (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff)) 43#define le2be16dbl(x) (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff)) 44 45#define IOCTL_IN(arg, ret) \ 46 do { int error = get_user(ret, (int __user *)(arg)); \ 47 if (error) return error; \ 48 } while (0) 49#define IOCTL_OUT(arg, ret) ioctl_return((int __user *)(arg), ret) 50 51static inline int ioctl_return(int __user *addr, int value) 52{ 53 return value < 0 ? value : put_user(value, addr); 54} 55 56 57 /* 58 * Configuration 59 */ 60 61#undef HAS_8BIT_TABLES 62 63#if defined(CONFIG_DMASOUND_ATARI) || defined(CONFIG_DMASOUND_ATARI_MODULE) || \ 64 defined(CONFIG_DMASOUND_PAULA) || defined(CONFIG_DMASOUND_PAULA_MODULE) || \ 65 defined(CONFIG_DMASOUND_Q40) || defined(CONFIG_DMASOUND_Q40_MODULE) 66#define HAS_8BIT_TABLES 67#define MIN_BUFFERS 4 68#define MIN_BUFSIZE (1<<12) /* in bytes (- where does this come from ?) */ 69#define MIN_FRAG_SIZE 8 /* not 100% sure about this */ 70#define MAX_BUFSIZE (1<<17) /* Limit for Amiga is 128 kb */ 71#define MAX_FRAG_SIZE 15 /* allow *4 for mono-8 => stereo-16 (for multi) */ 72 73#else /* is pmac and multi is off */ 74 75#define MIN_BUFFERS 2 76#define MIN_BUFSIZE (1<<8) /* in bytes */ 77#define MIN_FRAG_SIZE 8 78#define MAX_BUFSIZE (1<<18) /* this is somewhat arbitrary for pmac */ 79#define MAX_FRAG_SIZE 16 /* need to allow *4 for mono-8 => stereo-16 */ 80#endif 81 82#define DEFAULT_N_BUFFERS 4 83#define DEFAULT_BUFF_SIZE (1<<15) 84 85 /* 86 * Initialization 87 */ 88 89extern int dmasound_init(void); 90#ifdef MODULE 91extern void dmasound_deinit(void); 92#else 93#define dmasound_deinit() do { } while (0) 94#endif 95 96/* description of the set-up applies to either hard or soft settings */ 97 98typedef struct { 99 int format; /* AFMT_* */ 100 int stereo; /* 0 = mono, 1 = stereo */ 101 int size; /* 8/16 bit*/ 102 int speed; /* speed */ 103} SETTINGS; 104 105 /* 106 * Machine definitions 107 */ 108 109typedef struct { 110 const char *name; 111 const char *name2; 112 struct module *owner; 113 void *(*dma_alloc)(unsigned int, gfp_t); 114 void (*dma_free)(void *, unsigned int); 115 int (*irqinit)(void); 116#ifdef MODULE 117 void (*irqcleanup)(void); 118#endif 119 void (*init)(void); 120 void (*silence)(void); 121 int (*setFormat)(int); 122 int (*setVolume)(int); 123 int (*setBass)(int); 124 int (*setTreble)(int); 125 int (*setGain)(int); 126 void (*play)(void); 127 void (*record)(void); /* optional */ 128 void (*mixer_init)(void); /* optional */ 129 int (*mixer_ioctl)(u_int, u_long); /* optional */ 130 int (*write_sq_setup)(void); /* optional */ 131 int (*read_sq_setup)(void); /* optional */ 132 int (*sq_open)(fmode_t); /* optional */ 133 int (*state_info)(char *, size_t); /* optional */ 134 void (*abort_read)(void); /* optional */ 135 int min_dsp_speed; 136 int max_dsp_speed; 137 int version ; 138 int hardware_afmts ; /* OSS says we only return h'ware info */ 139 /* when queried via SNDCTL_DSP_GETFMTS */ 140 int capabilities ; /* low-level reply to SNDCTL_DSP_GETCAPS */ 141 SETTINGS default_hard ; /* open() or init() should set something valid */ 142 SETTINGS default_soft ; /* you can make it look like old OSS, if you want to */ 143} MACHINE; 144 145 /* 146 * Low level stuff 147 */ 148 149typedef struct { 150 ssize_t (*ct_ulaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 151 ssize_t (*ct_alaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 152 ssize_t (*ct_s8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 153 ssize_t (*ct_u8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 154 ssize_t (*ct_s16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 155 ssize_t (*ct_u16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 156 ssize_t (*ct_s16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 157 ssize_t (*ct_u16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 158} TRANS; 159 160struct sound_settings { 161 MACHINE mach; /* machine dependent things */ 162 SETTINGS hard; /* hardware settings */ 163 SETTINGS soft; /* software settings */ 164 SETTINGS dsp; /* /dev/dsp default settings */ 165 TRANS *trans_write; /* supported translations */ 166 int volume_left; /* volume (range is machine dependent) */ 167 int volume_right; 168 int bass; /* tone (range is machine dependent) */ 169 int treble; 170 int gain; 171 int minDev; /* minor device number currently open */ 172 spinlock_t lock; 173}; 174 175extern struct sound_settings dmasound; 176 177#ifdef HAS_8BIT_TABLES 178extern char dmasound_ulaw2dma8[]; 179extern char dmasound_alaw2dma8[]; 180#endif 181 182 /* 183 * Mid level stuff 184 */ 185 186static inline int dmasound_set_volume(int volume) 187{ 188 return dmasound.mach.setVolume(volume); 189} 190 191static inline int dmasound_set_bass(int bass) 192{ 193 return dmasound.mach.setBass ? dmasound.mach.setBass(bass) : 50; 194} 195 196static inline int dmasound_set_treble(int treble) 197{ 198 return dmasound.mach.setTreble ? dmasound.mach.setTreble(treble) : 50; 199} 200 201static inline int dmasound_set_gain(int gain) 202{ 203 return dmasound.mach.setGain ? dmasound.mach.setGain(gain) : 100; 204} 205 206 207 /* 208 * Sound queue stuff, the heart of the driver 209 */ 210 211struct sound_queue { 212 /* buffers allocated for this queue */ 213 int numBufs; /* real limits on what the user can have */ 214 int bufSize; /* in bytes */ 215 char **buffers; 216 217 /* current parameters */ 218 int locked ; /* params cannot be modified when != 0 */ 219 int user_frags ; /* user requests this many */ 220 int user_frag_size ; /* of this size */ 221 int max_count; /* actual # fragments <= numBufs */ 222 int block_size; /* internal block size in bytes */ 223 int max_active; /* in-use fragments <= max_count */ 224 225 /* it shouldn't be necessary to declare any of these volatile */ 226 int front, rear, count; 227 int rear_size; 228 /* 229 * The use of the playing field depends on the hardware 230 * 231 * Atari, PMac: The number of frames that are loaded/playing 232 * 233 * Amiga: Bit 0 is set: a frame is loaded 234 * Bit 1 is set: a frame is playing 235 */ 236 int active; 237 wait_queue_head_t action_queue, open_queue, sync_queue; 238 int non_blocking; 239 int busy, syncing, xruns, died; 240}; 241 242#define SLEEP(queue) interruptible_sleep_on_timeout(&queue, HZ) 243#define WAKE_UP(queue) (wake_up_interruptible(&queue)) 244 245extern struct sound_queue dmasound_write_sq; 246#define write_sq dmasound_write_sq 247 248extern int dmasound_catchRadius; 249#define catchRadius dmasound_catchRadius 250 251/* define the value to be put in the byte-swap reg in mac-io 252 when we want it to swap for us. 253*/ 254#define BS_VAL 1 255 256#define SW_INPUT_VOLUME_SCALE 4 257#define SW_INPUT_VOLUME_DEFAULT (128 / SW_INPUT_VOLUME_SCALE) 258 259extern int expand_read_bal; /* Balance factor for reading */ 260extern uint software_input_volume; /* software implemented recording volume! */ 261 262#endif /* _dmasound_h_ */ 263