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 51 static 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 #undef HAS_RECORD 63 64 #if defined(CONFIG_DMASOUND_ATARI) || defined(CONFIG_DMASOUND_ATARI_MODULE) ||\ 65 defined(CONFIG_DMASOUND_PAULA) || defined(CONFIG_DMASOUND_PAULA_MODULE) ||\ 66 defined(CONFIG_DMASOUND_Q40) || defined(CONFIG_DMASOUND_Q40_MODULE) 67 #define HAS_8BIT_TABLES 68 #define MIN_BUFFERS 4 69 #define MIN_BUFSIZE (1<<12) /* in bytes (- where does this come from ?) */ 70 #define MIN_FRAG_SIZE 8 /* not 100% sure about this */ 71 #define MAX_BUFSIZE (1<<17) /* Limit for Amiga is 128 kb */ 72 #define MAX_FRAG_SIZE 15 /* allow *4 for mono-8 => stereo-16 (for multi) */ 73 74 #else /* is pmac and multi is off */ 75 76 #define MIN_BUFFERS 2 77 #define MIN_BUFSIZE (1<<8) /* in bytes */ 78 #define MIN_FRAG_SIZE 8 79 #define MAX_BUFSIZE (1<<18) /* this is somewhat arbitrary for pmac */ 80 #define MAX_FRAG_SIZE 16 /* need to allow *4 for mono-8 => stereo-16 */ 81 #endif 82 83 #define DEFAULT_N_BUFFERS 4 84 #define DEFAULT_BUFF_SIZE (1<<15) 85 86 #if defined(CONFIG_DMASOUND_PMAC) || defined(CONFIG_DMASOUND_PMAC_MODULE) 87 #define HAS_RECORD 88 #endif 89 90 /* 91 * Initialization 92 */ 93 94 extern int dmasound_init(void); 95 #ifdef MODULE 96 extern void dmasound_deinit(void); 97 #else 98 #define dmasound_deinit() do { } while (0) 99 #endif 100 101 /* description of the set-up applies to either hard or soft settings */ 102 103 typedef struct { 104 int format; /* AFMT_* */ 105 int stereo; /* 0 = mono, 1 = stereo */ 106 int size; /* 8/16 bit*/ 107 int speed; /* speed */ 108 } SETTINGS; 109 110 /* 111 * Machine definitions 112 */ 113 114 typedef struct { 115 const char *name; 116 const char *name2; 117 struct module *owner; 118 void *(*dma_alloc)(unsigned int, gfp_t); 119 void (*dma_free)(void *, unsigned int); 120 int (*irqinit)(void); 121 #ifdef MODULE 122 void (*irqcleanup)(void); 123 #endif 124 void (*init)(void); 125 void (*silence)(void); 126 int (*setFormat)(int); 127 int (*setVolume)(int); 128 int (*setBass)(int); 129 int (*setTreble)(int); 130 int (*setGain)(int); 131 void (*play)(void); 132 void (*record)(void); /* optional */ 133 void (*mixer_init)(void); /* optional */ 134 int (*mixer_ioctl)(u_int, u_long); /* optional */ 135 int (*write_sq_setup)(void); /* optional */ 136 int (*read_sq_setup)(void); /* optional */ 137 int (*sq_open)(mode_t); /* optional */ 138 int (*state_info)(char *, size_t); /* optional */ 139 void (*abort_read)(void); /* optional */ 140 int min_dsp_speed; 141 int max_dsp_speed; 142 int version ; 143 int hardware_afmts ; /* OSS says we only return h'ware info */ 144 /* when queried via SNDCTL_DSP_GETFMTS */ 145 int capabilities ; /* low-level reply to SNDCTL_DSP_GETCAPS */ 146 SETTINGS default_hard ; /* open() or init() should set something valid */ 147 SETTINGS default_soft ; /* you can make it look like old OSS, if you want to */ 148 } MACHINE; 149 150 /* 151 * Low level stuff 152 */ 153 154 typedef struct { 155 ssize_t (*ct_ulaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 156 ssize_t (*ct_alaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 157 ssize_t (*ct_s8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 158 ssize_t (*ct_u8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 159 ssize_t (*ct_s16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 160 ssize_t (*ct_u16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 161 ssize_t (*ct_s16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 162 ssize_t (*ct_u16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t); 163 } TRANS; 164 165 struct sound_settings { 166 MACHINE mach; /* machine dependent things */ 167 SETTINGS hard; /* hardware settings */ 168 SETTINGS soft; /* software settings */ 169 SETTINGS dsp; /* /dev/dsp default settings */ 170 TRANS *trans_write; /* supported translations */ 171 #ifdef HAS_RECORD 172 TRANS *trans_read; /* supported translations */ 173 #endif 174 int volume_left; /* volume (range is machine dependent) */ 175 int volume_right; 176 int bass; /* tone (range is machine dependent) */ 177 int treble; 178 int gain; 179 int minDev; /* minor device number currently open */ 180 spinlock_t lock; 181 }; 182 183 extern struct sound_settings dmasound; 184 185 #ifdef HAS_8BIT_TABLES 186 extern char dmasound_ulaw2dma8[]; 187 extern char dmasound_alaw2dma8[]; 188 #endif 189 190 /* 191 * Mid level stuff 192 */ 193 194 static inline int dmasound_set_volume(int volume) 195 { 196 return dmasound.mach.setVolume(volume); 197 } 198 199 static inline int dmasound_set_bass(int bass) 200 { 201 return dmasound.mach.setBass ? dmasound.mach.setBass(bass) : 50; 202 } 203 204 static inline int dmasound_set_treble(int treble) 205 { 206 return dmasound.mach.setTreble ? dmasound.mach.setTreble(treble) : 50; 207 } 208 209 static inline int dmasound_set_gain(int gain) 210 { 211 return dmasound.mach.setGain ? dmasound.mach.setGain(gain) : 100; 212 } 213 214 215 /* 216 * Sound queue stuff, the heart of the driver 217 */ 218 219 struct sound_queue { 220 /* buffers allocated for this queue */ 221 int numBufs; /* real limits on what the user can have */ 222 int bufSize; /* in bytes */ 223 char **buffers; 224 225 /* current parameters */ 226 int locked ; /* params cannot be modified when != 0 */ 227 int user_frags ; /* user requests this many */ 228 int user_frag_size ; /* of this size */ 229 int max_count; /* actual # fragments <= numBufs */ 230 int block_size; /* internal block size in bytes */ 231 int max_active; /* in-use fragments <= max_count */ 232 233 /* it shouldn't be necessary to declare any of these volatile */ 234 int front, rear, count; 235 int rear_size; 236 /* 237 * The use of the playing field depends on the hardware 238 * 239 * Atari, PMac: The number of frames that are loaded/playing 240 * 241 * Amiga: Bit 0 is set: a frame is loaded 242 * Bit 1 is set: a frame is playing 243 */ 244 int active; 245 wait_queue_head_t action_queue, open_queue, sync_queue; 246 int open_mode; 247 int busy, syncing, xruns, died; 248 }; 249 250 #define SLEEP(queue) interruptible_sleep_on_timeout(&queue, HZ) 251 #define WAKE_UP(queue) (wake_up_interruptible(&queue)) 252 253 extern struct sound_queue dmasound_write_sq; 254 #define write_sq dmasound_write_sq 255 256 #ifdef HAS_RECORD 257 extern struct sound_queue dmasound_read_sq; 258 #define read_sq dmasound_read_sq 259 #endif 260 261 extern int dmasound_catchRadius; 262 #define catchRadius dmasound_catchRadius 263 264 /* define the value to be put in the byte-swap reg in mac-io 265 when we want it to swap for us. 266 */ 267 #define BS_VAL 1 268 269 #define SW_INPUT_VOLUME_SCALE 4 270 #define SW_INPUT_VOLUME_DEFAULT (128 / SW_INPUT_VOLUME_SCALE) 271 272 extern int expand_read_bal; /* Balance factor for reading */ 273 extern uint software_input_volume; /* software implemented recording volume! */ 274 275 #endif /* _dmasound_h_ */ 276