| 1 |
3 |
xianfeng |
/*
|
| 2 |
|
|
* linux/sound/oss/dmasound/dmasound_atari.c
|
| 3 |
|
|
*
|
| 4 |
|
|
* Atari TT and Falcon DMA Sound Driver
|
| 5 |
|
|
*
|
| 6 |
|
|
* See linux/sound/oss/dmasound/dmasound_core.c for copyright and credits
|
| 7 |
|
|
* prior to 28/01/2001
|
| 8 |
|
|
*
|
| 9 |
|
|
* 28/01/2001 [0.1] Iain Sandoe
|
| 10 |
|
|
* - added versioning
|
| 11 |
|
|
* - put in and populated the hardware_afmts field.
|
| 12 |
|
|
* [0.2] - put in SNDCTL_DSP_GETCAPS value.
|
| 13 |
|
|
* 01/02/2001 [0.3] - put in default hard/soft settings.
|
| 14 |
|
|
*/
|
| 15 |
|
|
|
| 16 |
|
|
|
| 17 |
|
|
#include <linux/module.h>
|
| 18 |
|
|
#include <linux/kernel.h>
|
| 19 |
|
|
#include <linux/init.h>
|
| 20 |
|
|
#include <linux/soundcard.h>
|
| 21 |
|
|
#include <linux/mm.h>
|
| 22 |
|
|
#include <linux/spinlock.h>
|
| 23 |
|
|
#include <linux/interrupt.h>
|
| 24 |
|
|
|
| 25 |
|
|
#include <asm/uaccess.h>
|
| 26 |
|
|
#include <asm/atariints.h>
|
| 27 |
|
|
#include <asm/atari_stram.h>
|
| 28 |
|
|
|
| 29 |
|
|
#include "dmasound.h"
|
| 30 |
|
|
|
| 31 |
|
|
#define DMASOUND_ATARI_REVISION 0
|
| 32 |
|
|
#define DMASOUND_ATARI_EDITION 3
|
| 33 |
|
|
|
| 34 |
|
|
extern void atari_microwire_cmd(int cmd);
|
| 35 |
|
|
|
| 36 |
|
|
static int is_falcon;
|
| 37 |
|
|
static int write_sq_ignore_int; /* ++TeSche: used for Falcon */
|
| 38 |
|
|
|
| 39 |
|
|
static int expand_bal; /* Balance factor for expanding (not volume!) */
|
| 40 |
|
|
static int expand_data; /* Data for expanding */
|
| 41 |
|
|
|
| 42 |
|
|
|
| 43 |
|
|
/*** Translations ************************************************************/
|
| 44 |
|
|
|
| 45 |
|
|
|
| 46 |
|
|
/* ++TeSche: radically changed for new expanding purposes...
|
| 47 |
|
|
*
|
| 48 |
|
|
* These two routines now deal with copying/expanding/translating the samples
|
| 49 |
|
|
* from user space into our buffer at the right frequency. They take care about
|
| 50 |
|
|
* how much data there's actually to read, how much buffer space there is and
|
| 51 |
|
|
* to convert samples into the right frequency/encoding. They will only work on
|
| 52 |
|
|
* complete samples so it may happen they leave some bytes in the input stream
|
| 53 |
|
|
* if the user didn't write a multiple of the current sample size. They both
|
| 54 |
|
|
* return the number of bytes they've used from both streams so you may detect
|
| 55 |
|
|
* such a situation. Luckily all programs should be able to cope with that.
|
| 56 |
|
|
*
|
| 57 |
|
|
* I think I've optimized anything as far as one can do in plain C, all
|
| 58 |
|
|
* variables should fit in registers and the loops are really short. There's
|
| 59 |
|
|
* one loop for every possible situation. Writing a more generalized and thus
|
| 60 |
|
|
* parameterized loop would only produce slower code. Feel free to optimize
|
| 61 |
|
|
* this in assembler if you like. :)
|
| 62 |
|
|
*
|
| 63 |
|
|
* I think these routines belong here because they're not yet really hardware
|
| 64 |
|
|
* independent, especially the fact that the Falcon can play 16bit samples
|
| 65 |
|
|
* only in stereo is hardcoded in both of them!
|
| 66 |
|
|
*
|
| 67 |
|
|
* ++geert: split in even more functions (one per format)
|
| 68 |
|
|
*/
|
| 69 |
|
|
|
| 70 |
|
|
static ssize_t ata_ct_law(const u_char __user *userPtr, size_t userCount,
|
| 71 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 72 |
|
|
ssize_t frameLeft);
|
| 73 |
|
|
static ssize_t ata_ct_s8(const u_char __user *userPtr, size_t userCount,
|
| 74 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 75 |
|
|
ssize_t frameLeft);
|
| 76 |
|
|
static ssize_t ata_ct_u8(const u_char __user *userPtr, size_t userCount,
|
| 77 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 78 |
|
|
ssize_t frameLeft);
|
| 79 |
|
|
static ssize_t ata_ct_s16be(const u_char __user *userPtr, size_t userCount,
|
| 80 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 81 |
|
|
ssize_t frameLeft);
|
| 82 |
|
|
static ssize_t ata_ct_u16be(const u_char __user *userPtr, size_t userCount,
|
| 83 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 84 |
|
|
ssize_t frameLeft);
|
| 85 |
|
|
static ssize_t ata_ct_s16le(const u_char __user *userPtr, size_t userCount,
|
| 86 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 87 |
|
|
ssize_t frameLeft);
|
| 88 |
|
|
static ssize_t ata_ct_u16le(const u_char __user *userPtr, size_t userCount,
|
| 89 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 90 |
|
|
ssize_t frameLeft);
|
| 91 |
|
|
static ssize_t ata_ctx_law(const u_char __user *userPtr, size_t userCount,
|
| 92 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 93 |
|
|
ssize_t frameLeft);
|
| 94 |
|
|
static ssize_t ata_ctx_s8(const u_char __user *userPtr, size_t userCount,
|
| 95 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 96 |
|
|
ssize_t frameLeft);
|
| 97 |
|
|
static ssize_t ata_ctx_u8(const u_char __user *userPtr, size_t userCount,
|
| 98 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 99 |
|
|
ssize_t frameLeft);
|
| 100 |
|
|
static ssize_t ata_ctx_s16be(const u_char __user *userPtr, size_t userCount,
|
| 101 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 102 |
|
|
ssize_t frameLeft);
|
| 103 |
|
|
static ssize_t ata_ctx_u16be(const u_char __user *userPtr, size_t userCount,
|
| 104 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 105 |
|
|
ssize_t frameLeft);
|
| 106 |
|
|
static ssize_t ata_ctx_s16le(const u_char __user *userPtr, size_t userCount,
|
| 107 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 108 |
|
|
ssize_t frameLeft);
|
| 109 |
|
|
static ssize_t ata_ctx_u16le(const u_char __user *userPtr, size_t userCount,
|
| 110 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 111 |
|
|
ssize_t frameLeft);
|
| 112 |
|
|
|
| 113 |
|
|
|
| 114 |
|
|
/*** Low level stuff *********************************************************/
|
| 115 |
|
|
|
| 116 |
|
|
|
| 117 |
|
|
static void *AtaAlloc(unsigned int size, gfp_t flags);
|
| 118 |
|
|
static void AtaFree(void *, unsigned int size);
|
| 119 |
|
|
static int AtaIrqInit(void);
|
| 120 |
|
|
#ifdef MODULE
|
| 121 |
|
|
static void AtaIrqCleanUp(void);
|
| 122 |
|
|
#endif /* MODULE */
|
| 123 |
|
|
static int AtaSetBass(int bass);
|
| 124 |
|
|
static int AtaSetTreble(int treble);
|
| 125 |
|
|
static void TTSilence(void);
|
| 126 |
|
|
static void TTInit(void);
|
| 127 |
|
|
static int TTSetFormat(int format);
|
| 128 |
|
|
static int TTSetVolume(int volume);
|
| 129 |
|
|
static int TTSetGain(int gain);
|
| 130 |
|
|
static void FalconSilence(void);
|
| 131 |
|
|
static void FalconInit(void);
|
| 132 |
|
|
static int FalconSetFormat(int format);
|
| 133 |
|
|
static int FalconSetVolume(int volume);
|
| 134 |
|
|
static void AtaPlayNextFrame(int index);
|
| 135 |
|
|
static void AtaPlay(void);
|
| 136 |
|
|
static irqreturn_t AtaInterrupt(int irq, void *dummy);
|
| 137 |
|
|
|
| 138 |
|
|
/*** Mid level stuff *********************************************************/
|
| 139 |
|
|
|
| 140 |
|
|
static void TTMixerInit(void);
|
| 141 |
|
|
static void FalconMixerInit(void);
|
| 142 |
|
|
static int AtaMixerIoctl(u_int cmd, u_long arg);
|
| 143 |
|
|
static int TTMixerIoctl(u_int cmd, u_long arg);
|
| 144 |
|
|
static int FalconMixerIoctl(u_int cmd, u_long arg);
|
| 145 |
|
|
static int AtaWriteSqSetup(void);
|
| 146 |
|
|
static int AtaSqOpen(mode_t mode);
|
| 147 |
|
|
static int TTStateInfo(char *buffer, size_t space);
|
| 148 |
|
|
static int FalconStateInfo(char *buffer, size_t space);
|
| 149 |
|
|
|
| 150 |
|
|
|
| 151 |
|
|
/*** Translations ************************************************************/
|
| 152 |
|
|
|
| 153 |
|
|
|
| 154 |
|
|
static ssize_t ata_ct_law(const u_char __user *userPtr, size_t userCount,
|
| 155 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 156 |
|
|
ssize_t frameLeft)
|
| 157 |
|
|
{
|
| 158 |
|
|
char *table = dmasound.soft.format == AFMT_MU_LAW ? dmasound_ulaw2dma8
|
| 159 |
|
|
: dmasound_alaw2dma8;
|
| 160 |
|
|
ssize_t count, used;
|
| 161 |
|
|
u_char *p = &frame[*frameUsed];
|
| 162 |
|
|
|
| 163 |
|
|
count = min_t(unsigned long, userCount, frameLeft);
|
| 164 |
|
|
if (dmasound.soft.stereo)
|
| 165 |
|
|
count &= ~1;
|
| 166 |
|
|
used = count;
|
| 167 |
|
|
while (count > 0) {
|
| 168 |
|
|
u_char data;
|
| 169 |
|
|
if (get_user(data, userPtr++))
|
| 170 |
|
|
return -EFAULT;
|
| 171 |
|
|
*p++ = table[data];
|
| 172 |
|
|
count--;
|
| 173 |
|
|
}
|
| 174 |
|
|
*frameUsed += used;
|
| 175 |
|
|
return used;
|
| 176 |
|
|
}
|
| 177 |
|
|
|
| 178 |
|
|
|
| 179 |
|
|
static ssize_t ata_ct_s8(const u_char __user *userPtr, size_t userCount,
|
| 180 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 181 |
|
|
ssize_t frameLeft)
|
| 182 |
|
|
{
|
| 183 |
|
|
ssize_t count, used;
|
| 184 |
|
|
void *p = &frame[*frameUsed];
|
| 185 |
|
|
|
| 186 |
|
|
count = min_t(unsigned long, userCount, frameLeft);
|
| 187 |
|
|
if (dmasound.soft.stereo)
|
| 188 |
|
|
count &= ~1;
|
| 189 |
|
|
used = count;
|
| 190 |
|
|
if (copy_from_user(p, userPtr, count))
|
| 191 |
|
|
return -EFAULT;
|
| 192 |
|
|
*frameUsed += used;
|
| 193 |
|
|
return used;
|
| 194 |
|
|
}
|
| 195 |
|
|
|
| 196 |
|
|
|
| 197 |
|
|
static ssize_t ata_ct_u8(const u_char __user *userPtr, size_t userCount,
|
| 198 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 199 |
|
|
ssize_t frameLeft)
|
| 200 |
|
|
{
|
| 201 |
|
|
ssize_t count, used;
|
| 202 |
|
|
|
| 203 |
|
|
if (!dmasound.soft.stereo) {
|
| 204 |
|
|
u_char *p = &frame[*frameUsed];
|
| 205 |
|
|
count = min_t(unsigned long, userCount, frameLeft);
|
| 206 |
|
|
used = count;
|
| 207 |
|
|
while (count > 0) {
|
| 208 |
|
|
u_char data;
|
| 209 |
|
|
if (get_user(data, userPtr++))
|
| 210 |
|
|
return -EFAULT;
|
| 211 |
|
|
*p++ = data ^ 0x80;
|
| 212 |
|
|
count--;
|
| 213 |
|
|
}
|
| 214 |
|
|
} else {
|
| 215 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 216 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>1;
|
| 217 |
|
|
used = count*2;
|
| 218 |
|
|
while (count > 0) {
|
| 219 |
|
|
u_short data;
|
| 220 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 221 |
|
|
return -EFAULT;
|
| 222 |
|
|
userPtr += 2;
|
| 223 |
|
|
*p++ = data ^ 0x8080;
|
| 224 |
|
|
count--;
|
| 225 |
|
|
}
|
| 226 |
|
|
}
|
| 227 |
|
|
*frameUsed += used;
|
| 228 |
|
|
return used;
|
| 229 |
|
|
}
|
| 230 |
|
|
|
| 231 |
|
|
|
| 232 |
|
|
static ssize_t ata_ct_s16be(const u_char __user *userPtr, size_t userCount,
|
| 233 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 234 |
|
|
ssize_t frameLeft)
|
| 235 |
|
|
{
|
| 236 |
|
|
ssize_t count, used;
|
| 237 |
|
|
|
| 238 |
|
|
if (!dmasound.soft.stereo) {
|
| 239 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 240 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>1;
|
| 241 |
|
|
used = count*2;
|
| 242 |
|
|
while (count > 0) {
|
| 243 |
|
|
u_short data;
|
| 244 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 245 |
|
|
return -EFAULT;
|
| 246 |
|
|
userPtr += 2;
|
| 247 |
|
|
*p++ = data;
|
| 248 |
|
|
*p++ = data;
|
| 249 |
|
|
count--;
|
| 250 |
|
|
}
|
| 251 |
|
|
*frameUsed += used*2;
|
| 252 |
|
|
} else {
|
| 253 |
|
|
void *p = (u_short *)&frame[*frameUsed];
|
| 254 |
|
|
count = min_t(unsigned long, userCount, frameLeft) & ~3;
|
| 255 |
|
|
used = count;
|
| 256 |
|
|
if (copy_from_user(p, userPtr, count))
|
| 257 |
|
|
return -EFAULT;
|
| 258 |
|
|
*frameUsed += used;
|
| 259 |
|
|
}
|
| 260 |
|
|
return used;
|
| 261 |
|
|
}
|
| 262 |
|
|
|
| 263 |
|
|
|
| 264 |
|
|
static ssize_t ata_ct_u16be(const u_char __user *userPtr, size_t userCount,
|
| 265 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 266 |
|
|
ssize_t frameLeft)
|
| 267 |
|
|
{
|
| 268 |
|
|
ssize_t count, used;
|
| 269 |
|
|
|
| 270 |
|
|
if (!dmasound.soft.stereo) {
|
| 271 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 272 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>1;
|
| 273 |
|
|
used = count*2;
|
| 274 |
|
|
while (count > 0) {
|
| 275 |
|
|
u_short data;
|
| 276 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 277 |
|
|
return -EFAULT;
|
| 278 |
|
|
userPtr += 2;
|
| 279 |
|
|
data ^= 0x8000;
|
| 280 |
|
|
*p++ = data;
|
| 281 |
|
|
*p++ = data;
|
| 282 |
|
|
count--;
|
| 283 |
|
|
}
|
| 284 |
|
|
*frameUsed += used*2;
|
| 285 |
|
|
} else {
|
| 286 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 287 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>2;
|
| 288 |
|
|
used = count*4;
|
| 289 |
|
|
while (count > 0) {
|
| 290 |
|
|
u_int data;
|
| 291 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 292 |
|
|
return -EFAULT;
|
| 293 |
|
|
userPtr += 4;
|
| 294 |
|
|
*p++ = data ^ 0x80008000;
|
| 295 |
|
|
count--;
|
| 296 |
|
|
}
|
| 297 |
|
|
*frameUsed += used;
|
| 298 |
|
|
}
|
| 299 |
|
|
return used;
|
| 300 |
|
|
}
|
| 301 |
|
|
|
| 302 |
|
|
|
| 303 |
|
|
static ssize_t ata_ct_s16le(const u_char __user *userPtr, size_t userCount,
|
| 304 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 305 |
|
|
ssize_t frameLeft)
|
| 306 |
|
|
{
|
| 307 |
|
|
ssize_t count, used;
|
| 308 |
|
|
|
| 309 |
|
|
count = frameLeft;
|
| 310 |
|
|
if (!dmasound.soft.stereo) {
|
| 311 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 312 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>1;
|
| 313 |
|
|
used = count*2;
|
| 314 |
|
|
while (count > 0) {
|
| 315 |
|
|
u_short data;
|
| 316 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 317 |
|
|
return -EFAULT;
|
| 318 |
|
|
userPtr += 2;
|
| 319 |
|
|
data = le2be16(data);
|
| 320 |
|
|
*p++ = data;
|
| 321 |
|
|
*p++ = data;
|
| 322 |
|
|
count--;
|
| 323 |
|
|
}
|
| 324 |
|
|
*frameUsed += used*2;
|
| 325 |
|
|
} else {
|
| 326 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 327 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>2;
|
| 328 |
|
|
used = count*4;
|
| 329 |
|
|
while (count > 0) {
|
| 330 |
|
|
u_long data;
|
| 331 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 332 |
|
|
return -EFAULT;
|
| 333 |
|
|
userPtr += 4;
|
| 334 |
|
|
data = le2be16dbl(data);
|
| 335 |
|
|
*p++ = data;
|
| 336 |
|
|
count--;
|
| 337 |
|
|
}
|
| 338 |
|
|
*frameUsed += used;
|
| 339 |
|
|
}
|
| 340 |
|
|
return used;
|
| 341 |
|
|
}
|
| 342 |
|
|
|
| 343 |
|
|
|
| 344 |
|
|
static ssize_t ata_ct_u16le(const u_char __user *userPtr, size_t userCount,
|
| 345 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 346 |
|
|
ssize_t frameLeft)
|
| 347 |
|
|
{
|
| 348 |
|
|
ssize_t count, used;
|
| 349 |
|
|
|
| 350 |
|
|
count = frameLeft;
|
| 351 |
|
|
if (!dmasound.soft.stereo) {
|
| 352 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 353 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>1;
|
| 354 |
|
|
used = count*2;
|
| 355 |
|
|
while (count > 0) {
|
| 356 |
|
|
u_short data;
|
| 357 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 358 |
|
|
return -EFAULT;
|
| 359 |
|
|
userPtr += 2;
|
| 360 |
|
|
data = le2be16(data) ^ 0x8000;
|
| 361 |
|
|
*p++ = data;
|
| 362 |
|
|
*p++ = data;
|
| 363 |
|
|
}
|
| 364 |
|
|
*frameUsed += used*2;
|
| 365 |
|
|
} else {
|
| 366 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 367 |
|
|
count = min_t(unsigned long, userCount, frameLeft)>>2;
|
| 368 |
|
|
used = count;
|
| 369 |
|
|
while (count > 0) {
|
| 370 |
|
|
u_long data;
|
| 371 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 372 |
|
|
return -EFAULT;
|
| 373 |
|
|
userPtr += 4;
|
| 374 |
|
|
data = le2be16dbl(data) ^ 0x80008000;
|
| 375 |
|
|
*p++ = data;
|
| 376 |
|
|
count--;
|
| 377 |
|
|
}
|
| 378 |
|
|
*frameUsed += used;
|
| 379 |
|
|
}
|
| 380 |
|
|
return used;
|
| 381 |
|
|
}
|
| 382 |
|
|
|
| 383 |
|
|
|
| 384 |
|
|
static ssize_t ata_ctx_law(const u_char __user *userPtr, size_t userCount,
|
| 385 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 386 |
|
|
ssize_t frameLeft)
|
| 387 |
|
|
{
|
| 388 |
|
|
char *table = dmasound.soft.format == AFMT_MU_LAW ? dmasound_ulaw2dma8
|
| 389 |
|
|
: dmasound_alaw2dma8;
|
| 390 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 391 |
|
|
long bal = expand_bal;
|
| 392 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 393 |
|
|
ssize_t used, usedf;
|
| 394 |
|
|
|
| 395 |
|
|
used = userCount;
|
| 396 |
|
|
usedf = frameLeft;
|
| 397 |
|
|
if (!dmasound.soft.stereo) {
|
| 398 |
|
|
u_char *p = &frame[*frameUsed];
|
| 399 |
|
|
u_char data = expand_data;
|
| 400 |
|
|
while (frameLeft) {
|
| 401 |
|
|
u_char c;
|
| 402 |
|
|
if (bal < 0) {
|
| 403 |
|
|
if (!userCount)
|
| 404 |
|
|
break;
|
| 405 |
|
|
if (get_user(c, userPtr++))
|
| 406 |
|
|
return -EFAULT;
|
| 407 |
|
|
data = table[c];
|
| 408 |
|
|
userCount--;
|
| 409 |
|
|
bal += hSpeed;
|
| 410 |
|
|
}
|
| 411 |
|
|
*p++ = data;
|
| 412 |
|
|
frameLeft--;
|
| 413 |
|
|
bal -= sSpeed;
|
| 414 |
|
|
}
|
| 415 |
|
|
expand_data = data;
|
| 416 |
|
|
} else {
|
| 417 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 418 |
|
|
u_short data = expand_data;
|
| 419 |
|
|
while (frameLeft >= 2) {
|
| 420 |
|
|
u_char c;
|
| 421 |
|
|
if (bal < 0) {
|
| 422 |
|
|
if (userCount < 2)
|
| 423 |
|
|
break;
|
| 424 |
|
|
if (get_user(c, userPtr++))
|
| 425 |
|
|
return -EFAULT;
|
| 426 |
|
|
data = table[c] << 8;
|
| 427 |
|
|
if (get_user(c, userPtr++))
|
| 428 |
|
|
return -EFAULT;
|
| 429 |
|
|
data |= table[c];
|
| 430 |
|
|
userCount -= 2;
|
| 431 |
|
|
bal += hSpeed;
|
| 432 |
|
|
}
|
| 433 |
|
|
*p++ = data;
|
| 434 |
|
|
frameLeft -= 2;
|
| 435 |
|
|
bal -= sSpeed;
|
| 436 |
|
|
}
|
| 437 |
|
|
expand_data = data;
|
| 438 |
|
|
}
|
| 439 |
|
|
expand_bal = bal;
|
| 440 |
|
|
used -= userCount;
|
| 441 |
|
|
*frameUsed += usedf-frameLeft;
|
| 442 |
|
|
return used;
|
| 443 |
|
|
}
|
| 444 |
|
|
|
| 445 |
|
|
|
| 446 |
|
|
static ssize_t ata_ctx_s8(const u_char __user *userPtr, size_t userCount,
|
| 447 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 448 |
|
|
ssize_t frameLeft)
|
| 449 |
|
|
{
|
| 450 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 451 |
|
|
long bal = expand_bal;
|
| 452 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 453 |
|
|
ssize_t used, usedf;
|
| 454 |
|
|
|
| 455 |
|
|
used = userCount;
|
| 456 |
|
|
usedf = frameLeft;
|
| 457 |
|
|
if (!dmasound.soft.stereo) {
|
| 458 |
|
|
u_char *p = &frame[*frameUsed];
|
| 459 |
|
|
u_char data = expand_data;
|
| 460 |
|
|
while (frameLeft) {
|
| 461 |
|
|
if (bal < 0) {
|
| 462 |
|
|
if (!userCount)
|
| 463 |
|
|
break;
|
| 464 |
|
|
if (get_user(data, userPtr++))
|
| 465 |
|
|
return -EFAULT;
|
| 466 |
|
|
userCount--;
|
| 467 |
|
|
bal += hSpeed;
|
| 468 |
|
|
}
|
| 469 |
|
|
*p++ = data;
|
| 470 |
|
|
frameLeft--;
|
| 471 |
|
|
bal -= sSpeed;
|
| 472 |
|
|
}
|
| 473 |
|
|
expand_data = data;
|
| 474 |
|
|
} else {
|
| 475 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 476 |
|
|
u_short data = expand_data;
|
| 477 |
|
|
while (frameLeft >= 2) {
|
| 478 |
|
|
if (bal < 0) {
|
| 479 |
|
|
if (userCount < 2)
|
| 480 |
|
|
break;
|
| 481 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 482 |
|
|
return -EFAULT;
|
| 483 |
|
|
userPtr += 2;
|
| 484 |
|
|
userCount -= 2;
|
| 485 |
|
|
bal += hSpeed;
|
| 486 |
|
|
}
|
| 487 |
|
|
*p++ = data;
|
| 488 |
|
|
frameLeft -= 2;
|
| 489 |
|
|
bal -= sSpeed;
|
| 490 |
|
|
}
|
| 491 |
|
|
expand_data = data;
|
| 492 |
|
|
}
|
| 493 |
|
|
expand_bal = bal;
|
| 494 |
|
|
used -= userCount;
|
| 495 |
|
|
*frameUsed += usedf-frameLeft;
|
| 496 |
|
|
return used;
|
| 497 |
|
|
}
|
| 498 |
|
|
|
| 499 |
|
|
|
| 500 |
|
|
static ssize_t ata_ctx_u8(const u_char __user *userPtr, size_t userCount,
|
| 501 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 502 |
|
|
ssize_t frameLeft)
|
| 503 |
|
|
{
|
| 504 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 505 |
|
|
long bal = expand_bal;
|
| 506 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 507 |
|
|
ssize_t used, usedf;
|
| 508 |
|
|
|
| 509 |
|
|
used = userCount;
|
| 510 |
|
|
usedf = frameLeft;
|
| 511 |
|
|
if (!dmasound.soft.stereo) {
|
| 512 |
|
|
u_char *p = &frame[*frameUsed];
|
| 513 |
|
|
u_char data = expand_data;
|
| 514 |
|
|
while (frameLeft) {
|
| 515 |
|
|
if (bal < 0) {
|
| 516 |
|
|
if (!userCount)
|
| 517 |
|
|
break;
|
| 518 |
|
|
if (get_user(data, userPtr++))
|
| 519 |
|
|
return -EFAULT;
|
| 520 |
|
|
data ^= 0x80;
|
| 521 |
|
|
userCount--;
|
| 522 |
|
|
bal += hSpeed;
|
| 523 |
|
|
}
|
| 524 |
|
|
*p++ = data;
|
| 525 |
|
|
frameLeft--;
|
| 526 |
|
|
bal -= sSpeed;
|
| 527 |
|
|
}
|
| 528 |
|
|
expand_data = data;
|
| 529 |
|
|
} else {
|
| 530 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 531 |
|
|
u_short data = expand_data;
|
| 532 |
|
|
while (frameLeft >= 2) {
|
| 533 |
|
|
if (bal < 0) {
|
| 534 |
|
|
if (userCount < 2)
|
| 535 |
|
|
break;
|
| 536 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 537 |
|
|
return -EFAULT;
|
| 538 |
|
|
userPtr += 2;
|
| 539 |
|
|
data ^= 0x8080;
|
| 540 |
|
|
userCount -= 2;
|
| 541 |
|
|
bal += hSpeed;
|
| 542 |
|
|
}
|
| 543 |
|
|
*p++ = data;
|
| 544 |
|
|
frameLeft -= 2;
|
| 545 |
|
|
bal -= sSpeed;
|
| 546 |
|
|
}
|
| 547 |
|
|
expand_data = data;
|
| 548 |
|
|
}
|
| 549 |
|
|
expand_bal = bal;
|
| 550 |
|
|
used -= userCount;
|
| 551 |
|
|
*frameUsed += usedf-frameLeft;
|
| 552 |
|
|
return used;
|
| 553 |
|
|
}
|
| 554 |
|
|
|
| 555 |
|
|
|
| 556 |
|
|
static ssize_t ata_ctx_s16be(const u_char __user *userPtr, size_t userCount,
|
| 557 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 558 |
|
|
ssize_t frameLeft)
|
| 559 |
|
|
{
|
| 560 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 561 |
|
|
long bal = expand_bal;
|
| 562 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 563 |
|
|
ssize_t used, usedf;
|
| 564 |
|
|
|
| 565 |
|
|
used = userCount;
|
| 566 |
|
|
usedf = frameLeft;
|
| 567 |
|
|
if (!dmasound.soft.stereo) {
|
| 568 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 569 |
|
|
u_short data = expand_data;
|
| 570 |
|
|
while (frameLeft >= 4) {
|
| 571 |
|
|
if (bal < 0) {
|
| 572 |
|
|
if (userCount < 2)
|
| 573 |
|
|
break;
|
| 574 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 575 |
|
|
return -EFAULT;
|
| 576 |
|
|
userPtr += 2;
|
| 577 |
|
|
userCount -= 2;
|
| 578 |
|
|
bal += hSpeed;
|
| 579 |
|
|
}
|
| 580 |
|
|
*p++ = data;
|
| 581 |
|
|
*p++ = data;
|
| 582 |
|
|
frameLeft -= 4;
|
| 583 |
|
|
bal -= sSpeed;
|
| 584 |
|
|
}
|
| 585 |
|
|
expand_data = data;
|
| 586 |
|
|
} else {
|
| 587 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 588 |
|
|
u_long data = expand_data;
|
| 589 |
|
|
while (frameLeft >= 4) {
|
| 590 |
|
|
if (bal < 0) {
|
| 591 |
|
|
if (userCount < 4)
|
| 592 |
|
|
break;
|
| 593 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 594 |
|
|
return -EFAULT;
|
| 595 |
|
|
userPtr += 4;
|
| 596 |
|
|
userCount -= 4;
|
| 597 |
|
|
bal += hSpeed;
|
| 598 |
|
|
}
|
| 599 |
|
|
*p++ = data;
|
| 600 |
|
|
frameLeft -= 4;
|
| 601 |
|
|
bal -= sSpeed;
|
| 602 |
|
|
}
|
| 603 |
|
|
expand_data = data;
|
| 604 |
|
|
}
|
| 605 |
|
|
expand_bal = bal;
|
| 606 |
|
|
used -= userCount;
|
| 607 |
|
|
*frameUsed += usedf-frameLeft;
|
| 608 |
|
|
return used;
|
| 609 |
|
|
}
|
| 610 |
|
|
|
| 611 |
|
|
|
| 612 |
|
|
static ssize_t ata_ctx_u16be(const u_char __user *userPtr, size_t userCount,
|
| 613 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 614 |
|
|
ssize_t frameLeft)
|
| 615 |
|
|
{
|
| 616 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 617 |
|
|
long bal = expand_bal;
|
| 618 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 619 |
|
|
ssize_t used, usedf;
|
| 620 |
|
|
|
| 621 |
|
|
used = userCount;
|
| 622 |
|
|
usedf = frameLeft;
|
| 623 |
|
|
if (!dmasound.soft.stereo) {
|
| 624 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 625 |
|
|
u_short data = expand_data;
|
| 626 |
|
|
while (frameLeft >= 4) {
|
| 627 |
|
|
if (bal < 0) {
|
| 628 |
|
|
if (userCount < 2)
|
| 629 |
|
|
break;
|
| 630 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 631 |
|
|
return -EFAULT;
|
| 632 |
|
|
userPtr += 2;
|
| 633 |
|
|
data ^= 0x8000;
|
| 634 |
|
|
userCount -= 2;
|
| 635 |
|
|
bal += hSpeed;
|
| 636 |
|
|
}
|
| 637 |
|
|
*p++ = data;
|
| 638 |
|
|
*p++ = data;
|
| 639 |
|
|
frameLeft -= 4;
|
| 640 |
|
|
bal -= sSpeed;
|
| 641 |
|
|
}
|
| 642 |
|
|
expand_data = data;
|
| 643 |
|
|
} else {
|
| 644 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 645 |
|
|
u_long data = expand_data;
|
| 646 |
|
|
while (frameLeft >= 4) {
|
| 647 |
|
|
if (bal < 0) {
|
| 648 |
|
|
if (userCount < 4)
|
| 649 |
|
|
break;
|
| 650 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 651 |
|
|
return -EFAULT;
|
| 652 |
|
|
userPtr += 4;
|
| 653 |
|
|
data ^= 0x80008000;
|
| 654 |
|
|
userCount -= 4;
|
| 655 |
|
|
bal += hSpeed;
|
| 656 |
|
|
}
|
| 657 |
|
|
*p++ = data;
|
| 658 |
|
|
frameLeft -= 4;
|
| 659 |
|
|
bal -= sSpeed;
|
| 660 |
|
|
}
|
| 661 |
|
|
expand_data = data;
|
| 662 |
|
|
}
|
| 663 |
|
|
expand_bal = bal;
|
| 664 |
|
|
used -= userCount;
|
| 665 |
|
|
*frameUsed += usedf-frameLeft;
|
| 666 |
|
|
return used;
|
| 667 |
|
|
}
|
| 668 |
|
|
|
| 669 |
|
|
|
| 670 |
|
|
static ssize_t ata_ctx_s16le(const u_char __user *userPtr, size_t userCount,
|
| 671 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 672 |
|
|
ssize_t frameLeft)
|
| 673 |
|
|
{
|
| 674 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 675 |
|
|
long bal = expand_bal;
|
| 676 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 677 |
|
|
ssize_t used, usedf;
|
| 678 |
|
|
|
| 679 |
|
|
used = userCount;
|
| 680 |
|
|
usedf = frameLeft;
|
| 681 |
|
|
if (!dmasound.soft.stereo) {
|
| 682 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 683 |
|
|
u_short data = expand_data;
|
| 684 |
|
|
while (frameLeft >= 4) {
|
| 685 |
|
|
if (bal < 0) {
|
| 686 |
|
|
if (userCount < 2)
|
| 687 |
|
|
break;
|
| 688 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 689 |
|
|
return -EFAULT;
|
| 690 |
|
|
userPtr += 2;
|
| 691 |
|
|
data = le2be16(data);
|
| 692 |
|
|
userCount -= 2;
|
| 693 |
|
|
bal += hSpeed;
|
| 694 |
|
|
}
|
| 695 |
|
|
*p++ = data;
|
| 696 |
|
|
*p++ = data;
|
| 697 |
|
|
frameLeft -= 4;
|
| 698 |
|
|
bal -= sSpeed;
|
| 699 |
|
|
}
|
| 700 |
|
|
expand_data = data;
|
| 701 |
|
|
} else {
|
| 702 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 703 |
|
|
u_long data = expand_data;
|
| 704 |
|
|
while (frameLeft >= 4) {
|
| 705 |
|
|
if (bal < 0) {
|
| 706 |
|
|
if (userCount < 4)
|
| 707 |
|
|
break;
|
| 708 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 709 |
|
|
return -EFAULT;
|
| 710 |
|
|
userPtr += 4;
|
| 711 |
|
|
data = le2be16dbl(data);
|
| 712 |
|
|
userCount -= 4;
|
| 713 |
|
|
bal += hSpeed;
|
| 714 |
|
|
}
|
| 715 |
|
|
*p++ = data;
|
| 716 |
|
|
frameLeft -= 4;
|
| 717 |
|
|
bal -= sSpeed;
|
| 718 |
|
|
}
|
| 719 |
|
|
expand_data = data;
|
| 720 |
|
|
}
|
| 721 |
|
|
expand_bal = bal;
|
| 722 |
|
|
used -= userCount;
|
| 723 |
|
|
*frameUsed += usedf-frameLeft;
|
| 724 |
|
|
return used;
|
| 725 |
|
|
}
|
| 726 |
|
|
|
| 727 |
|
|
|
| 728 |
|
|
static ssize_t ata_ctx_u16le(const u_char __user *userPtr, size_t userCount,
|
| 729 |
|
|
u_char frame[], ssize_t *frameUsed,
|
| 730 |
|
|
ssize_t frameLeft)
|
| 731 |
|
|
{
|
| 732 |
|
|
/* this should help gcc to stuff everything into registers */
|
| 733 |
|
|
long bal = expand_bal;
|
| 734 |
|
|
long hSpeed = dmasound.hard.speed, sSpeed = dmasound.soft.speed;
|
| 735 |
|
|
ssize_t used, usedf;
|
| 736 |
|
|
|
| 737 |
|
|
used = userCount;
|
| 738 |
|
|
usedf = frameLeft;
|
| 739 |
|
|
if (!dmasound.soft.stereo) {
|
| 740 |
|
|
u_short *p = (u_short *)&frame[*frameUsed];
|
| 741 |
|
|
u_short data = expand_data;
|
| 742 |
|
|
while (frameLeft >= 4) {
|
| 743 |
|
|
if (bal < 0) {
|
| 744 |
|
|
if (userCount < 2)
|
| 745 |
|
|
break;
|
| 746 |
|
|
if (get_user(data, (u_short __user *)userPtr))
|
| 747 |
|
|
return -EFAULT;
|
| 748 |
|
|
userPtr += 2;
|
| 749 |
|
|
data = le2be16(data) ^ 0x8000;
|
| 750 |
|
|
userCount -= 2;
|
| 751 |
|
|
bal += hSpeed;
|
| 752 |
|
|
}
|
| 753 |
|
|
*p++ = data;
|
| 754 |
|
|
*p++ = data;
|
| 755 |
|
|
frameLeft -= 4;
|
| 756 |
|
|
bal -= sSpeed;
|
| 757 |
|
|
}
|
| 758 |
|
|
expand_data = data;
|
| 759 |
|
|
} else {
|
| 760 |
|
|
u_long *p = (u_long *)&frame[*frameUsed];
|
| 761 |
|
|
u_long data = expand_data;
|
| 762 |
|
|
while (frameLeft >= 4) {
|
| 763 |
|
|
if (bal < 0) {
|
| 764 |
|
|
if (userCount < 4)
|
| 765 |
|
|
break;
|
| 766 |
|
|
if (get_user(data, (u_int __user *)userPtr))
|
| 767 |
|
|
return -EFAULT;
|
| 768 |
|
|
userPtr += 4;
|
| 769 |
|
|
data = le2be16dbl(data) ^ 0x80008000;
|
| 770 |
|
|
userCount -= 4;
|
| 771 |
|
|
bal += hSpeed;
|
| 772 |
|
|
}
|
| 773 |
|
|
*p++ = data;
|
| 774 |
|
|
frameLeft -= 4;
|
| 775 |
|
|
bal -= sSpeed;
|
| 776 |
|
|
}
|
| 777 |
|
|
expand_data = data;
|
| 778 |
|
|
}
|
| 779 |
|
|
expand_bal = bal;
|
| 780 |
|
|
used -= userCount;
|
| 781 |
|
|
*frameUsed += usedf-frameLeft;
|
| 782 |
|
|
return used;
|
| 783 |
|
|
}
|
| 784 |
|
|
|
| 785 |
|
|
|
| 786 |
|
|
static TRANS transTTNormal = {
|
| 787 |
|
|
.ct_ulaw = ata_ct_law,
|
| 788 |
|
|
.ct_alaw = ata_ct_law,
|
| 789 |
|
|
.ct_s8 = ata_ct_s8,
|
| 790 |
|
|
.ct_u8 = ata_ct_u8,
|
| 791 |
|
|
};
|
| 792 |
|
|
|
| 793 |
|
|
static TRANS transTTExpanding = {
|
| 794 |
|
|
.ct_ulaw = ata_ctx_law,
|
| 795 |
|
|
.ct_alaw = ata_ctx_law,
|
| 796 |
|
|
.ct_s8 = ata_ctx_s8,
|
| 797 |
|
|
.ct_u8 = ata_ctx_u8,
|
| 798 |
|
|
};
|
| 799 |
|
|
|
| 800 |
|
|
static TRANS transFalconNormal = {
|
| 801 |
|
|
.ct_ulaw = ata_ct_law,
|
| 802 |
|
|
.ct_alaw = ata_ct_law,
|
| 803 |
|
|
.ct_s8 = ata_ct_s8,
|
| 804 |
|
|
.ct_u8 = ata_ct_u8,
|
| 805 |
|
|
.ct_s16be = ata_ct_s16be,
|
| 806 |
|
|
.ct_u16be = ata_ct_u16be,
|
| 807 |
|
|
.ct_s16le = ata_ct_s16le,
|
| 808 |
|
|
.ct_u16le = ata_ct_u16le
|
| 809 |
|
|
};
|
| 810 |
|
|
|
| 811 |
|
|
static TRANS transFalconExpanding = {
|
| 812 |
|
|
.ct_ulaw = ata_ctx_law,
|
| 813 |
|
|
.ct_alaw = ata_ctx_law,
|
| 814 |
|
|
.ct_s8 = ata_ctx_s8,
|
| 815 |
|
|
.ct_u8 = ata_ctx_u8,
|
| 816 |
|
|
.ct_s16be = ata_ctx_s16be,
|
| 817 |
|
|
.ct_u16be = ata_ctx_u16be,
|
| 818 |
|
|
.ct_s16le = ata_ctx_s16le,
|
| 819 |
|
|
.ct_u16le = ata_ctx_u16le,
|
| 820 |
|
|
};
|
| 821 |
|
|
|
| 822 |
|
|
|
| 823 |
|
|
/*** Low level stuff *********************************************************/
|
| 824 |
|
|
|
| 825 |
|
|
|
| 826 |
|
|
|
| 827 |
|
|
/*
|
| 828 |
|
|
* Atari (TT/Falcon)
|
| 829 |
|
|
*/
|
| 830 |
|
|
|
| 831 |
|
|
static void *AtaAlloc(unsigned int size, gfp_t flags)
|
| 832 |
|
|
{
|
| 833 |
|
|
return atari_stram_alloc(size, "dmasound");
|
| 834 |
|
|
}
|
| 835 |
|
|
|
| 836 |
|
|
static void AtaFree(void *obj, unsigned int size)
|
| 837 |
|
|
{
|
| 838 |
|
|
atari_stram_free( obj );
|
| 839 |
|
|
}
|
| 840 |
|
|
|
| 841 |
|
|
static int __init AtaIrqInit(void)
|
| 842 |
|
|
{
|
| 843 |
|
|
/* Set up timer A. Timer A
|
| 844 |
|
|
will receive a signal upon end of playing from the sound
|
| 845 |
|
|
hardware. Furthermore Timer A is able to count events
|
| 846 |
|
|
and will cause an interrupt after a programmed number
|
| 847 |
|
|
of events. So all we need to keep the music playing is
|
| 848 |
|
|
to provide the sound hardware with new data upon
|
| 849 |
|
|
an interrupt from timer A. */
|
| 850 |
|
|
mfp.tim_ct_a = 0; /* ++roman: Stop timer before programming! */
|
| 851 |
|
|
mfp.tim_dt_a = 1; /* Cause interrupt after first event. */
|
| 852 |
|
|
mfp.tim_ct_a = 8; /* Turn on event counting. */
|
| 853 |
|
|
/* Register interrupt handler. */
|
| 854 |
|
|
request_irq(IRQ_MFP_TIMA, AtaInterrupt, IRQ_TYPE_SLOW, "DMA sound",
|
| 855 |
|
|
AtaInterrupt);
|
| 856 |
|
|
mfp.int_en_a |= 0x20; /* Turn interrupt on. */
|
| 857 |
|
|
mfp.int_mk_a |= 0x20;
|
| 858 |
|
|
return 1;
|
| 859 |
|
|
}
|
| 860 |
|
|
|
| 861 |
|
|
#ifdef MODULE
|
| 862 |
|
|
static void AtaIrqCleanUp(void)
|
| 863 |
|
|
{
|
| 864 |
|
|
mfp.tim_ct_a = 0; /* stop timer */
|
| 865 |
|
|
mfp.int_en_a &= ~0x20; /* turn interrupt off */
|
| 866 |
|
|
free_irq(IRQ_MFP_TIMA, AtaInterrupt);
|
| 867 |
|
|
}
|
| 868 |
|
|
#endif /* MODULE */
|
| 869 |
|
|
|
| 870 |
|
|
|
| 871 |
|
|
#define TONE_VOXWARE_TO_DB(v) \
|
| 872 |
|
|
(((v) < 0) ? -12 : ((v) > 100) ? 12 : ((v) - 50) * 6 / 25)
|
| 873 |
|
|
#define TONE_DB_TO_VOXWARE(v) (((v) * 25 + ((v) > 0 ? 5 : -5)) / 6 + 50)
|
| 874 |
|
|
|
| 875 |
|
|
|
| 876 |
|
|
static int AtaSetBass(int bass)
|
| 877 |
|
|
{
|
| 878 |
|
|
dmasound.bass = TONE_VOXWARE_TO_DB(bass);
|
| 879 |
|
|
atari_microwire_cmd(MW_LM1992_BASS(dmasound.bass));
|
| 880 |
|
|
return TONE_DB_TO_VOXWARE(dmasound.bass);
|
| 881 |
|
|
}
|
| 882 |
|
|
|
| 883 |
|
|
|
| 884 |
|
|
static int AtaSetTreble(int treble)
|
| 885 |
|
|
{
|
| 886 |
|
|
dmasound.treble = TONE_VOXWARE_TO_DB(treble);
|
| 887 |
|
|
atari_microwire_cmd(MW_LM1992_TREBLE(dmasound.treble));
|
| 888 |
|
|
return TONE_DB_TO_VOXWARE(dmasound.treble);
|
| 889 |
|
|
}
|
| 890 |
|
|
|
| 891 |
|
|
|
| 892 |
|
|
|
| 893 |
|
|
/*
|
| 894 |
|
|
* TT
|
| 895 |
|
|
*/
|
| 896 |
|
|
|
| 897 |
|
|
|
| 898 |
|
|
static void TTSilence(void)
|
| 899 |
|
|
{
|
| 900 |
|
|
tt_dmasnd.ctrl = DMASND_CTRL_OFF;
|
| 901 |
|
|
atari_microwire_cmd(MW_LM1992_PSG_HIGH); /* mix in PSG signal 1:1 */
|
| 902 |
|
|
}
|
| 903 |
|
|
|
| 904 |
|
|
|
| 905 |
|
|
static void TTInit(void)
|
| 906 |
|
|
{
|
| 907 |
|
|
int mode, i, idx;
|
| 908 |
|
|
const int freq[4] = {50066, 25033, 12517, 6258};
|
| 909 |
|
|
|
| 910 |
|
|
/* search a frequency that fits into the allowed error range */
|
| 911 |
|
|
|
| 912 |
|
|
idx = -1;
|
| 913 |
|
|
for (i = 0; i < ARRAY_SIZE(freq); i++)
|
| 914 |
|
|
/* this isn't as much useful for a TT than for a Falcon, but
|
| 915 |
|
|
* then it doesn't hurt very much to implement it for a TT too.
|
| 916 |
|
|
*/
|
| 917 |
|
|
if ((100 * abs(dmasound.soft.speed - freq[i]) / freq[i]) < catchRadius)
|
| 918 |
|
|
idx = i;
|
| 919 |
|
|
if (idx > -1) {
|
| 920 |
|
|
dmasound.soft.speed = freq[idx];
|
| 921 |
|
|
dmasound.trans_write = &transTTNormal;
|
| 922 |
|
|
} else
|
| 923 |
|
|
dmasound.trans_write = &transTTExpanding;
|
| 924 |
|
|
|
| 925 |
|
|
TTSilence();
|
| 926 |
|
|
dmasound.hard = dmasound.soft;
|
| 927 |
|
|
|
| 928 |
|
|
if (dmasound.hard.speed > 50066) {
|
| 929 |
|
|
/* we would need to squeeze the sound, but we won't do that */
|
| 930 |
|
|
dmasound.hard.speed = 50066;
|
| 931 |
|
|
mode = DMASND_MODE_50KHZ;
|
| 932 |
|
|
dmasound.trans_write = &transTTNormal;
|
| 933 |
|
|
} else if (dmasound.hard.speed > 25033) {
|
| 934 |
|
|
dmasound.hard.speed = 50066;
|
| 935 |
|
|
mode = DMASND_MODE_50KHZ;
|
| 936 |
|
|
} else if (dmasound.hard.speed > 12517) {
|
| 937 |
|
|
dmasound.hard.speed = 25033;
|
| 938 |
|
|
mode = DMASND_MODE_25KHZ;
|
| 939 |
|
|
} else if (dmasound.hard.speed > 6258) {
|
| 940 |
|
|
dmasound.hard.speed = 12517;
|
| 941 |
|
|
mode = DMASND_MODE_12KHZ;
|
| 942 |
|
|
} else {
|
| 943 |
|
|
dmasound.hard.speed = 6258;
|
| 944 |
|
|
mode = DMASND_MODE_6KHZ;
|
| 945 |
|
|
}
|
| 946 |
|
|
|
| 947 |
|
|
tt_dmasnd.mode = (dmasound.hard.stereo ?
|
| 948 |
|
|
DMASND_MODE_STEREO : DMASND_MODE_MONO) |
|
| 949 |
|
|
DMASND_MODE_8BIT | mode;
|
| 950 |
|
|
|
| 951 |
|
|
expand_bal = -dmasound.soft.speed;
|
| 952 |
|
|
}
|
| 953 |
|
|
|
| 954 |
|
|
|
| 955 |
|
|
static int TTSetFormat(int format)
|
| 956 |
|
|
{
|
| 957 |
|
|
/* TT sound DMA supports only 8bit modes */
|
| 958 |
|
|
|
| 959 |
|
|
switch (format) {
|
| 960 |
|
|
case AFMT_QUERY:
|
| 961 |
|
|
return dmasound.soft.format;
|
| 962 |
|
|
case AFMT_MU_LAW:
|
| 963 |
|
|
case AFMT_A_LAW:
|
| 964 |
|
|
case AFMT_S8:
|
| 965 |
|
|
case AFMT_U8:
|
| 966 |
|
|
break;
|
| 967 |
|
|
default:
|
| 968 |
|
|
format = AFMT_S8;
|
| 969 |
|
|
}
|
| 970 |
|
|
|
| 971 |
|
|
dmasound.soft.format = format;
|
| 972 |
|
|
dmasound.soft.size = 8;
|
| 973 |
|
|
if (dmasound.minDev == SND_DEV_DSP) {
|
| 974 |
|
|
dmasound.dsp.format = format;
|
| 975 |
|
|
dmasound.dsp.size = 8;
|
| 976 |
|
|
}
|
| 977 |
|
|
TTInit();
|
| 978 |
|
|
|
| 979 |
|
|
return format;
|
| 980 |
|
|
}
|
| 981 |
|
|
|
| 982 |
|
|
|
| 983 |
|
|
#define VOLUME_VOXWARE_TO_DB(v) \
|
| 984 |
|
|
(((v) < 0) ? -40 : ((v) > 100) ? 0 : ((v) * 2) / 5 - 40)
|
| 985 |
|
|
#define VOLUME_DB_TO_VOXWARE(v) ((((v) + 40) * 5 + 1) / 2)
|
| 986 |
|
|
|
| 987 |
|
|
|
| 988 |
|
|
static int TTSetVolume(int volume)
|
| 989 |
|
|
{
|
| 990 |
|
|
dmasound.volume_left = VOLUME_VOXWARE_TO_DB(volume & 0xff);
|
| 991 |
|
|
atari_microwire_cmd(MW_LM1992_BALLEFT(dmasound.volume_left));
|
| 992 |
|
|
dmasound.volume_right = VOLUME_VOXWARE_TO_DB((volume & 0xff00) >> 8);
|
| 993 |
|
|
atari_microwire_cmd(MW_LM1992_BALRIGHT(dmasound.volume_right));
|
| 994 |
|
|
return VOLUME_DB_TO_VOXWARE(dmasound.volume_left) |
|
| 995 |
|
|
(VOLUME_DB_TO_VOXWARE(dmasound.volume_right) << 8);
|
| 996 |
|
|
}
|
| 997 |
|
|
|
| 998 |
|
|
|
| 999 |
|
|
#define GAIN_VOXWARE_TO_DB(v) \
|
| 1000 |
|
|
(((v) < 0) ? -80 : ((v) > 100) ? 0 : ((v) * 4) / 5 - 80)
|
| 1001 |
|
|
#define GAIN_DB_TO_VOXWARE(v) ((((v) + 80) * 5 + 1) / 4)
|
| 1002 |
|
|
|
| 1003 |
|
|
static int TTSetGain(int gain)
|
| 1004 |
|
|
{
|
| 1005 |
|
|
dmasound.gain = GAIN_VOXWARE_TO_DB(gain);
|
| 1006 |
|
|
atari_microwire_cmd(MW_LM1992_VOLUME(dmasound.gain));
|
| 1007 |
|
|
return GAIN_DB_TO_VOXWARE(dmasound.gain);
|
| 1008 |
|
|
}
|
| 1009 |
|
|
|
| 1010 |
|
|
|
| 1011 |
|
|
|
| 1012 |
|
|
/*
|
| 1013 |
|
|
* Falcon
|
| 1014 |
|
|
*/
|
| 1015 |
|
|
|
| 1016 |
|
|
|
| 1017 |
|
|
static void FalconSilence(void)
|
| 1018 |
|
|
{
|
| 1019 |
|
|
/* stop playback, set sample rate 50kHz for PSG sound */
|
| 1020 |
|
|
tt_dmasnd.ctrl = DMASND_CTRL_OFF;
|
| 1021 |
|
|
tt_dmasnd.mode = DMASND_MODE_50KHZ | DMASND_MODE_STEREO | DMASND_MODE_8BIT;
|
| 1022 |
|
|
tt_dmasnd.int_div = 0; /* STE compatible divider */
|
| 1023 |
|
|
tt_dmasnd.int_ctrl = 0x0;
|
| 1024 |
|
|
tt_dmasnd.cbar_src = 0x0000; /* no matrix inputs */
|
| 1025 |
|
|
tt_dmasnd.cbar_dst = 0x0000; /* no matrix outputs */
|
| 1026 |
|
|
tt_dmasnd.dac_src = 1; /* connect ADC to DAC, disconnect matrix */
|
| 1027 |
|
|
tt_dmasnd.adc_src = 3; /* ADC Input = PSG */
|
| 1028 |
|
|
}
|
| 1029 |
|
|
|
| 1030 |
|
|
|
| 1031 |
|
|
static void FalconInit(void)
|
| 1032 |
|
|
{
|
| 1033 |
|
|
int divider, i, idx;
|
| 1034 |
|
|
const int freq[8] = {49170, 32780, 24585, 19668, 16390, 12292, 9834, 8195};
|
| 1035 |
|
|
|
| 1036 |
|
|
/* search a frequency that fits into the allowed error range */
|
| 1037 |
|
|
|
| 1038 |
|
|
idx = -1;
|
| 1039 |
|
|
for (i = 0; i < ARRAY_SIZE(freq); i++)
|
| 1040 |
|
|
/* if we will tolerate 3% error 8000Hz->8195Hz (2.38%) would
|
| 1041 |
|
|
* be playable without expanding, but that now a kernel runtime
|
| 1042 |
|
|
* option
|
| 1043 |
|
|
*/
|
| 1044 |
|
|
if ((100 * abs(dmasound.soft.speed - freq[i]) / freq[i]) < catchRadius)
|
| 1045 |
|
|
idx = i;
|
| 1046 |
|
|
if (idx > -1) {
|
| 1047 |
|
|
dmasound.soft.speed = freq[idx];
|
| 1048 |
|
|
dmasound.trans_write = &transFalconNormal;
|
| 1049 |
|
|
} else
|
| 1050 |
|
|
dmasound.trans_write = &transFalconExpanding;
|
| 1051 |
|
|
|
| 1052 |
|
|
FalconSilence();
|
| 1053 |
|
|
dmasound.hard = dmasound.soft;
|
| 1054 |
|
|
|
| 1055 |
|
|
if (dmasound.hard.size == 16) {
|
| 1056 |
|
|
/* the Falcon can play 16bit samples only in stereo */
|
| 1057 |
|
|
dmasound.hard.stereo = 1;
|
| 1058 |
|
|
}
|
| 1059 |
|
|
|
| 1060 |
|
|
if (dmasound.hard.speed > 49170) {
|
| 1061 |
|
|
/* we would need to squeeze the sound, but we won't do that */
|
| 1062 |
|
|
dmasound.hard.speed = 49170;
|
| 1063 |
|
|
divider = 1;
|
| 1064 |
|
|
dmasound.trans_write = &transFalconNormal;
|
| 1065 |
|
|
} else if (dmasound.hard.speed > 32780) {
|
| 1066 |
|
|
dmasound.hard.speed = 49170;
|
| 1067 |
|
|
divider = 1;
|
| 1068 |
|
|
} else if (dmasound.hard.speed > 24585) {
|
| 1069 |
|
|
dmasound.hard.speed = 32780;
|
| 1070 |
|
|
divider = 2;
|
| 1071 |
|
|
} else if (dmasound.hard.speed > 19668) {
|
| 1072 |
|
|
dmasound.hard.speed = 24585;
|
| 1073 |
|
|
divider = 3;
|
| 1074 |
|
|
} else if (dmasound.hard.speed > 16390) {
|
| 1075 |
|
|
dmasound.hard.speed = 19668;
|
| 1076 |
|
|
divider = 4;
|
| 1077 |
|
|
} else if (dmasound.hard.speed > 12292) {
|
| 1078 |
|
|
dmasound.hard.speed = 16390;
|
| 1079 |
|
|
divider = 5;
|
| 1080 |
|
|
} else if (dmasound.hard.speed > 9834) {
|
| 1081 |
|
|
dmasound.hard.speed = 12292;
|
| 1082 |
|
|
divider = 7;
|
| 1083 |
|
|
} else if (dmasound.hard.speed > 8195) {
|
| 1084 |
|
|
dmasound.hard.speed = 9834;
|
| 1085 |
|
|
divider = 9;
|
| 1086 |
|
|
} else {
|
| 1087 |
|
|
dmasound.hard.speed = 8195;
|
| 1088 |
|
|
divider = 11;
|
| 1089 |
|
|
}
|
| 1090 |
|
|
tt_dmasnd.int_div = divider;
|
| 1091 |
|
|
|
| 1092 |
|
|
/* Setup Falcon sound DMA for playback */
|
| 1093 |
|
|
tt_dmasnd.int_ctrl = 0x4; /* Timer A int at play end */
|
| 1094 |
|
|
tt_dmasnd.track_select = 0x0; /* play 1 track, track 1 */
|
| 1095 |
|
|
tt_dmasnd.cbar_src = 0x0001; /* DMA(25MHz) --> DAC */
|
| 1096 |
|
|
tt_dmasnd.cbar_dst = 0x0000;
|
| 1097 |
|
|
tt_dmasnd.rec_track_select = 0;
|
| 1098 |
|
|
tt_dmasnd.dac_src = 2; /* connect matrix to DAC */
|
| 1099 |
|
|
tt_dmasnd.adc_src = 0; /* ADC Input = Mic */
|
| 1100 |
|
|
|
| 1101 |
|
|
tt_dmasnd.mode = (dmasound.hard.stereo ?
|
| 1102 |
|
|
DMASND_MODE_STEREO : DMASND_MODE_MONO) |
|
| 1103 |
|
|
((dmasound.hard.size == 8) ?
|
| 1104 |
|
|
DMASND_MODE_8BIT : DMASND_MODE_16BIT) |
|
| 1105 |
|
|
DMASND_MODE_6KHZ;
|
| 1106 |
|
|
|
| 1107 |
|
|
expand_bal = -dmasound.soft.speed;
|
| 1108 |
|
|
}
|
| 1109 |
|
|
|
| 1110 |
|
|
|
| 1111 |
|
|
static int FalconSetFormat(int format)
|
| 1112 |
|
|
{
|
| 1113 |
|
|
int size;
|
| 1114 |
|
|
/* Falcon sound DMA supports 8bit and 16bit modes */
|
| 1115 |
|
|
|
| 1116 |
|
|
switch (format) {
|
| 1117 |
|
|
case AFMT_QUERY:
|
| 1118 |
|
|
return dmasound.soft.format;
|
| 1119 |
|
|
case AFMT_MU_LAW:
|
| 1120 |
|
|
case AFMT_A_LAW:
|
| 1121 |
|
|
case AFMT_U8:
|
| 1122 |
|
|
case AFMT_S8:
|
| 1123 |
|
|
size = 8;
|
| 1124 |
|
|
break;
|
| 1125 |
|
|
case AFMT_S16_BE:
|
| 1126 |
|
|
case AFMT_U16_BE:
|
| 1127 |
|
|
case AFMT_S16_LE:
|
| 1128 |
|
|
case AFMT_U16_LE:
|
| 1129 |
|
|
size = 16;
|
| 1130 |
|
|
break;
|
| 1131 |
|
|
default: /* :-) */
|
| 1132 |
|
|
size = 8;
|
| 1133 |
|
|
format = AFMT_S8;
|
| 1134 |
|
|
}
|
| 1135 |
|
|
|
| 1136 |
|
|
dmasound.soft.format = format;
|
| 1137 |
|
|
dmasound.soft.size = size;
|
| 1138 |
|
|
if (dmasound.minDev == SND_DEV_DSP) {
|
| 1139 |
|
|
dmasound.dsp.format = format;
|
| 1140 |
|
|
dmasound.dsp.size = dmasound.soft.size;
|
| 1141 |
|
|
}
|
| 1142 |
|
|
|
| 1143 |
|
|
FalconInit();
|
| 1144 |
|
|
|
| 1145 |
|
|
return format;
|
| 1146 |
|
|
}
|
| 1147 |
|
|
|
| 1148 |
|
|
|
| 1149 |
|
|
/* This is for the Falcon output *attenuation* in 1.5dB steps,
|
| 1150 |
|
|
* i.e. output level from 0 to -22.5dB in -1.5dB steps.
|
| 1151 |
|
|
*/
|
| 1152 |
|
|
#define VOLUME_VOXWARE_TO_ATT(v) \
|
| 1153 |
|
|
((v) < 0 ? 15 : (v) > 100 ? 0 : 15 - (v) * 3 / 20)
|
| 1154 |
|
|
#define VOLUME_ATT_TO_VOXWARE(v) (100 - (v) * 20 / 3)
|
| 1155 |
|
|
|
| 1156 |
|
|
|
| 1157 |
|
|
static int FalconSetVolume(int volume)
|
| 1158 |
|
|
{
|
| 1159 |
|
|
dmasound.volume_left = VOLUME_VOXWARE_TO_ATT(volume & 0xff);
|
| 1160 |
|
|
dmasound.volume_right = VOLUME_VOXWARE_TO_ATT((volume & 0xff00) >> 8);
|
| 1161 |
|
|
tt_dmasnd.output_atten = dmasound.volume_left << 8 | dmasound.volume_right << 4;
|
| 1162 |
|
|
return VOLUME_ATT_TO_VOXWARE(dmasound.volume_left) |
|
| 1163 |
|
|
VOLUME_ATT_TO_VOXWARE(dmasound.volume_right) << 8;
|
| 1164 |
|
|
}
|
| 1165 |
|
|
|
| 1166 |
|
|
|
| 1167 |
|
|
static void AtaPlayNextFrame(int index)
|
| 1168 |
|
|
{
|
| 1169 |
|
|
char *start, *end;
|
| 1170 |
|
|
|
| 1171 |
|
|
/* used by AtaPlay() if all doubts whether there really is something
|
| 1172 |
|
|
* to be played are already wiped out.
|
| 1173 |
|
|
*/
|
| 1174 |
|
|
start = write_sq.buffers[write_sq.front];
|
| 1175 |
|
|
end = start+((write_sq.count == index) ? write_sq.rear_size
|
| 1176 |
|
|
: write_sq.block_size);
|
| 1177 |
|
|
/* end might not be a legal virtual address. */
|
| 1178 |
|
|
DMASNDSetEnd(virt_to_phys(end - 1) + 1);
|
| 1179 |
|
|
DMASNDSetBase(virt_to_phys(start));
|
| 1180 |
|
|
/* Since only an even number of samples per frame can
|
| 1181 |
|
|
be played, we might lose one byte here. (TO DO) */
|
| 1182 |
|
|
write_sq.front = (write_sq.front+1) % write_sq.max_count;
|
| 1183 |
|
|
write_sq.active++;
|
| 1184 |
|
|
tt_dmasnd.ctrl = DMASND_CTRL_ON | DMASND_CTRL_REPEAT;
|
| 1185 |
|
|
}
|
| 1186 |
|
|
|
| 1187 |
|
|
|
| 1188 |
|
|
static void AtaPlay(void)
|
| 1189 |
|
|
{
|
| 1190 |
|
|
/* ++TeSche: Note that write_sq.active is no longer just a flag but
|
| 1191 |
|
|
* holds the number of frames the DMA is currently programmed for
|
| 1192 |
|
|
* instead, may be 0, 1 (currently being played) or 2 (pre-programmed).
|
| 1193 |
|
|
*
|
| 1194 |
|
|
* Changes done to write_sq.count and write_sq.active are a bit more
|
| 1195 |
|
|
* subtle again so now I must admit I also prefer disabling the irq
|
| 1196 |
|
|
* here rather than considering all possible situations. But the point
|
| 1197 |
|
|
* is that disabling the irq doesn't have any bad influence on this
|
| 1198 |
|
|
* version of the driver as we benefit from having pre-programmed the
|
| 1199 |
|
|
* DMA wherever possible: There's no need to reload the DMA at the
|
| 1200 |
|
|
* exact time of an interrupt but only at some time while the
|
| 1201 |
|
|
* pre-programmed frame is playing!
|
| 1202 |
|
|
*/
|
| 1203 |
|
|
atari_disable_irq(IRQ_MFP_TIMA);
|
| 1204 |
|
|
|
| 1205 |
|
|
if (write_sq.active == 2 || /* DMA is 'full' */
|
| 1206 |
|
|
write_sq.count <= 0) { /* nothing to do */
|
| 1207 |
|
|
atari_enable_irq(IRQ_MFP_TIMA);
|
| 1208 |
|
|
return;
|
| 1209 |
|
|
}
|
| 1210 |
|
|
|
| 1211 |
|
|
if (write_sq.active == 0) {
|
| 1212 |
|
|
/* looks like there's nothing 'in' the DMA yet, so try
|
| 1213 |
|
|
* to put two frames into it (at least one is available).
|
| 1214 |
|
|
*/
|
| 1215 |
|
|
if (write_sq.count == 1 &&
|
| 1216 |
|
|
write_sq.rear_size < write_sq.block_size &&
|
| 1217 |
|
|
!write_sq.syncing) {
|
| 1218 |
|
|
/* hmmm, the only existing frame is not
|
| 1219 |
|
|
* yet filled and we're not syncing?
|
| 1220 |
|
|
*/
|
| 1221 |
|
|
atari_enable_irq(IRQ_MFP_TIMA);
|
| 1222 |
|
|
return;
|
| 1223 |
|
|
}
|
| 1224 |
|
|
AtaPlayNextFrame(1);
|
| 1225 |
|
|
if (write_sq.count == 1) {
|
| 1226 |
|
|
/* no more frames */
|
| 1227 |
|
|
atari_enable_irq(IRQ_MFP_TIMA);
|
| 1228 |
|
|
return;
|
| 1229 |
|
|
}
|
| 1230 |
|
|
if (write_sq.count == 2 &&
|
| 1231 |
|
|
write_sq.rear_size < write_sq.block_size &&
|
| 1232 |
|
|
!write_sq.syncing) {
|
| 1233 |
|
|
/* hmmm, there were two frames, but the second
|
| 1234 |
|
|
* one is not yet filled and we're not syncing?
|
| 1235 |
|
|
*/
|
| 1236 |
|
|
atari_enable_irq(IRQ_MFP_TIMA);
|
| 1237 |
|
|
return;
|
| 1238 |
|
|
}
|
| 1239 |
|
|
AtaPlayNextFrame(2);
|
| 1240 |
|
|
} else {
|
| 1241 |
|
|
/* there's already a frame being played so we may only stuff
|
| 1242 |
|
|
* one new into the DMA, but even if this may be the last
|
| 1243 |
|
|
* frame existing the previous one is still on write_sq.count.
|
| 1244 |
|
|
*/
|
| 1245 |
|
|
if (write_sq.count == 2 &&
|
| 1246 |
|
|
write_sq.rear_size < write_sq.block_size &&
|
| 1247 |
|
|
!write_sq.syncing) {
|
| 1248 |
|
|
/* hmmm, the only existing frame is not
|
| 1249 |
|
|
* yet filled and we're not syncing?
|
| 1250 |
|
|
*/
|
| 1251 |
|
|
atari_enable_irq(IRQ_MFP_TIMA);
|
| 1252 |
|
|
return;
|
| 1253 |
|
|
}
|
| 1254 |
|
|
AtaPlayNextFrame(2);
|
| 1255 |
|
|
}
|
| 1256 |
|
|
atari_enable_irq(IRQ_MFP_TIMA);
|
| 1257 |
|
|
}
|
| 1258 |
|
|
|
| 1259 |
|
|
|
| 1260 |
|
|
static irqreturn_t AtaInterrupt(int irq, void *dummy)
|
| 1261 |
|
|
{
|
| 1262 |
|
|
#if 0
|
| 1263 |
|
|
/* ++TeSche: if you should want to test this... */
|
| 1264 |
|
|
static int cnt;
|
| 1265 |
|
|
if (write_sq.active == 2)
|
| 1266 |
|
|
if (++cnt == 10) {
|
| 1267 |
|
|
/* simulate losing an interrupt */
|
| 1268 |
|
|
cnt = 0;
|
| 1269 |
|
|
return IRQ_HANDLED;
|
| 1270 |
|
|
}
|
| 1271 |
|
|
#endif
|
| 1272 |
|
|
spin_lock(&dmasound.lock);
|
| 1273 |
|
|
if (write_sq_ignore_int && is_falcon) {
|
| 1274 |
|
|
/* ++TeSche: Falcon only: ignore first irq because it comes
|
| 1275 |
|
|
* immediately after starting a frame. after that, irqs come
|
| 1276 |
|
|
* (almost) like on the TT.
|
| 1277 |
|
|
*/
|
| 1278 |
|
|
write_sq_ignore_int = 0;
|
| 1279 |
|
|
return IRQ_HANDLED;
|
| 1280 |
|
|
}
|
| 1281 |
|
|
|
| 1282 |
|
|
if (!write_sq.active) {
|
| 1283 |
|
|
/* playing was interrupted and sq_reset() has already cleared
|
| 1284 |
|
|
* the sq variables, so better don't do anything here.
|
| 1285 |
|
|
*/
|
| 1286 |
|
|
WAKE_UP(write_sq.sync_queue);
|
| 1287 |
|
|
return IRQ_HANDLED;
|
| 1288 |
|
|
}
|
| 1289 |
|
|
|
| 1290 |
|
|
/* Probably ;) one frame is finished. Well, in fact it may be that a
|
| 1291 |
|
|
* pre-programmed one is also finished because there has been a long
|
| 1292 |
|
|
* delay in interrupt delivery and we've completely lost one, but
|
| 1293 |
|
|
* there's no way to detect such a situation. In such a case the last
|
| 1294 |
|
|
* frame will be played more than once and the situation will recover
|
| 1295 |
|
|
* as soon as the irq gets through.
|
| 1296 |
|
|
*/
|
| 1297 |
|
|
write_sq.count--;
|
| 1298 |
|
|
write_sq.active--;
|
| 1299 |
|
|
|
| 1300 |
|
|
if (!write_sq.active) {
|
| 1301 |
|
|
tt_dmasnd.ctrl = DMASND_CTRL_OFF;
|
| 1302 |
|
|
write_sq_ignore_int = 1;
|
| 1303 |
|
|
}
|
| 1304 |
|
|
|
| 1305 |
|
|
WAKE_UP(write_sq.action_queue);
|
| 1306 |
|
|
/* At least one block of the queue is free now
|
| 1307 |
|
|
so wake up a writing process blocked because
|
| 1308 |
|
|
of a full queue. */
|
| 1309 |
|
|
|
| 1310 |
|
|
if ((write_sq.active != 1) || (write_sq.count != 1))
|
| 1311 |
|
|
/* We must be a bit carefully here: write_sq.count indicates the
|
| 1312 |
|
|
* number of buffers used and not the number of frames to be
|
| 1313 |
|
|
* played. If write_sq.count==1 and write_sq.active==1 that
|
| 1314 |
|
|
* means the only remaining frame was already programmed
|
| 1315 |
|
|
* earlier (and is currently running) so we mustn't call
|
| 1316 |
|
|
* AtaPlay() here, otherwise we'll play one frame too much.
|
| 1317 |
|
|
*/
|
| 1318 |
|
|
AtaPlay();
|
| 1319 |
|
|
|
| 1320 |
|
|
if (!write_sq.active) WAKE_UP(write_sq.sync_queue);
|
| 1321 |
|
|
/* We are not playing after AtaPlay(), so there
|
| 1322 |
|
|
is nothing to play any more. Wake up a process
|
| 1323 |
|
|
waiting for audio output to drain. */
|
| 1324 |
|
|
spin_unlock(&dmasound.lock);
|
| 1325 |
|
|
return IRQ_HANDLED;
|
| 1326 |
|
|
}
|
| 1327 |
|
|
|
| 1328 |
|
|
|
| 1329 |
|
|
/*** Mid level stuff *********************************************************/
|
| 1330 |
|
|
|
| 1331 |
|
|
|
| 1332 |
|
|
/*
|
| 1333 |
|
|
* /dev/mixer abstraction
|
| 1334 |
|
|
*/
|
| 1335 |
|
|
|
| 1336 |
|
|
#define RECLEVEL_VOXWARE_TO_GAIN(v) \
|
| 1337 |
|
|
((v) < 0 ? 0 : (v) > 100 ? 15 : (v) * 3 / 20)
|
| 1338 |
|
|
#define RECLEVEL_GAIN_TO_VOXWARE(v) (((v) * 20 + 2) / 3)
|
| 1339 |
|
|
|
| 1340 |
|
|
|
| 1341 |
|
|
static void __init TTMixerInit(void)
|
| 1342 |
|
|
{
|
| 1343 |
|
|
atari_microwire_cmd(MW_LM1992_VOLUME(0));
|
| 1344 |
|
|
dmasound.volume_left = 0;
|
| 1345 |
|
|
atari_microwire_cmd(MW_LM1992_BALLEFT(0));
|
| 1346 |
|
|
dmasound.volume_right = 0;
|
| 1347 |
|
|
atari_microwire_cmd(MW_LM1992_BALRIGHT(0));
|
| 1348 |
|
|
atari_microwire_cmd(MW_LM1992_TREBLE(0));
|
| 1349 |
|
|
atari_microwire_cmd(MW_LM1992_BASS(0));
|
| 1350 |
|
|
}
|
| 1351 |
|
|
|
| 1352 |
|
|
static void __init FalconMixerInit(void)
|
| 1353 |
|
|
{
|
| 1354 |
|
|
dmasound.volume_left = (tt_dmasnd.output_atten & 0xf00) >> 8;
|
| 1355 |
|
|
dmasound.volume_right = (tt_dmasnd.output_atten & 0xf0) >> 4;
|
| 1356 |
|
|
}
|
| 1357 |
|
|
|
| 1358 |
|
|
static int AtaMixerIoctl(u_int cmd, u_long arg)
|
| 1359 |
|
|
{
|
| 1360 |
|
|
int data;
|
| 1361 |
|
|
unsigned long flags;
|
| 1362 |
|
|
switch (cmd) {
|
| 1363 |
|
|
case SOUND_MIXER_READ_SPEAKER:
|
| 1364 |
|
|
if (is_falcon || MACH_IS_TT) {
|
| 1365 |
|
|
int porta;
|
| 1366 |
|
|
spin_lock_irqsave(&dmasound.lock, flags);
|
| 1367 |
|
|
sound_ym.rd_data_reg_sel = 14;
|
| 1368 |
|
|
porta = sound_ym.rd_data_reg_sel;
|
| 1369 |
|
|
spin_unlock_irqrestore(&dmasound.lock, flags);
|
| 1370 |
|
|
return IOCTL_OUT(arg, porta & 0x40 ? 0 : 100);
|
| 1371 |
|
|
}
|
| 1372 |
|
|
break;
|
| 1373 |
|
|
case SOUND_MIXER_WRITE_VOLUME:
|
| 1374 |
|
|
IOCTL_IN(arg, data);
|
| 1375 |
|
|
return IOCTL_OUT(arg, dmasound_set_volume(data));
|
| 1376 |
|
|
case SOUND_MIXER_WRITE_SPEAKER:
|
| 1377 |
|
|
if (is_falcon || MACH_IS_TT) {
|
| 1378 |
|
|
int porta;
|
| 1379 |
|
|
IOCTL_IN(arg, data);
|
| 1380 |
|
|
spin_lock_irqsave(&dmasound.lock, flags);
|
| 1381 |
|
|
sound_ym.rd_data_reg_sel = 14;
|
| 1382 |
|
|
porta = (sound_ym.rd_data_reg_sel & ~0x40) |
|
| 1383 |
|
|
(data < 50 ? 0x40 : 0);
|
| 1384 |
|
|
sound_ym.wd_data = porta;
|
| 1385 |
|
|
spin_unlock_irqrestore(&dmasound.lock, flags);
|
| 1386 |
|
|
return IOCTL_OUT(arg, porta & 0x40 ? 0 : 100);
|
| 1387 |
|
|
}
|
| 1388 |
|
|
}
|
| 1389 |
|
|
return -EINVAL;
|
| 1390 |
|
|
}
|
| 1391 |
|
|
|
| 1392 |
|
|
|
| 1393 |
|
|
static int TTMixerIoctl(u_int cmd, u_long arg)
|
| 1394 |
|
|
{
|
| 1395 |
|
|
int data;
|
| 1396 |
|
|
switch (cmd) {
|
| 1397 |
|
|
case SOUND_MIXER_READ_RECMASK:
|
| 1398 |
|
|
return IOCTL_OUT(arg, 0);
|
| 1399 |
|
|
case SOUND_MIXER_READ_DEVMASK:
|
| 1400 |
|
|
return IOCTL_OUT(arg,
|
| 1401 |
|
|
SOUND_MASK_VOLUME | SOUND_MASK_TREBLE | SOUND_MASK_BASS |
|
| 1402 |
|
|
(MACH_IS_TT ? SOUND_MASK_SPEAKER : 0));
|
| 1403 |
|
|
case SOUND_MIXER_READ_STEREODEVS:
|
| 1404 |
|
|
return IOCTL_OUT(arg, SOUND_MASK_VOLUME);
|
| 1405 |
|
|
case SOUND_MIXER_READ_VOLUME:
|
| 1406 |
|
|
return IOCTL_OUT(arg,
|
| 1407 |
|
|
VOLUME_DB_TO_VOXWARE(dmasound.volume_left) |
|
| 1408 |
|
|
(VOLUME_DB_TO_VOXWARE(dmasound.volume_right) << 8));
|
| 1409 |
|
|
case SOUND_MIXER_READ_BASS:
|
| 1410 |
|
|
return IOCTL_OUT(arg, TONE_DB_TO_VOXWARE(dmasound.bass));
|
| 1411 |
|
|
case SOUND_MIXER_READ_TREBLE:
|
| 1412 |
|
|
return IOCTL_OUT(arg, TONE_DB_TO_VOXWARE(dmasound.treble));
|
| 1413 |
|
|
case SOUND_MIXER_READ_OGAIN:
|
| 1414 |
|
|
return IOCTL_OUT(arg, GAIN_DB_TO_VOXWARE(dmasound.gain));
|
| 1415 |
|
|
case SOUND_MIXER_WRITE_BASS:
|
| 1416 |
|
|
IOCTL_IN(arg, data);
|
| 1417 |
|
|
return IOCTL_OUT(arg, dmasound_set_bass(data));
|
| 1418 |
|
|
case SOUND_MIXER_WRITE_TREBLE:
|
| 1419 |
|
|
IOCTL_IN(arg, data);
|
| 1420 |
|
|
return IOCTL_OUT(arg, dmasound_set_treble(data));
|
| 1421 |
|
|
case SOUND_MIXER_WRITE_OGAIN:
|
| 1422 |
|
|
IOCTL_IN(arg, data);
|
| 1423 |
|
|
return IOCTL_OUT(arg, dmasound_set_gain(data));
|
| 1424 |
|
|
}
|
| 1425 |
|
|
return AtaMixerIoctl(cmd, arg);
|
| 1426 |
|
|
}
|
| 1427 |
|
|
|
| 1428 |
|
|
static int FalconMixerIoctl(u_int cmd, u_long arg)
|
| 1429 |
|
|
{
|
| 1430 |
|
|
int data;
|
| 1431 |
|
|
switch (cmd) {
|
| 1432 |
|
|
case SOUND_MIXER_READ_RECMASK:
|
| 1433 |
|
|
return IOCTL_OUT(arg, SOUND_MASK_MIC);
|
| 1434 |
|
|
case SOUND_MIXER_READ_DEVMASK:
|
| 1435 |
|
|
return IOCTL_OUT(arg, SOUND_MASK_VOLUME | SOUND_MASK_MIC | SOUND_MASK_SPEAKER);
|
| 1436 |
|
|
case SOUND_MIXER_READ_STEREODEVS:
|
| 1437 |
|
|
return IOCTL_OUT(arg, SOUND_MASK_VOLUME | SOUND_MASK_MIC);
|
| 1438 |
|
|
case SOUND_MIXER_READ_VOLUME:
|
| 1439 |
|
|
return IOCTL_OUT(arg,
|
| 1440 |
|
|
VOLUME_ATT_TO_VOXWARE(dmasound.volume_left) |
|
| 1441 |
|
|
VOLUME_ATT_TO_VOXWARE(dmasound.volume_right) << 8);
|
| 1442 |
|
|
case SOUND_MIXER_READ_CAPS:
|
| 1443 |
|
|
return IOCTL_OUT(arg, SOUND_CAP_EXCL_INPUT);
|
| 1444 |
|
|
case SOUND_MIXER_WRITE_MIC:
|
| 1445 |
|
|
IOCTL_IN(arg, data);
|
| 1446 |
|
|
tt_dmasnd.input_gain =
|
| 1447 |
|
|
RECLEVEL_VOXWARE_TO_GAIN(data & 0xff) << 4 |
|
| 1448 |
|
|
RECLEVEL_VOXWARE_TO_GAIN(data >> 8 & 0xff);
|
| 1449 |
|
|
/* fall thru, return set value */
|
| 1450 |
|
|
case SOUND_MIXER_READ_MIC:
|
| 1451 |
|
|
return IOCTL_OUT(arg,
|
| 1452 |
|
|
RECLEVEL_GAIN_TO_VOXWARE(tt_dmasnd.input_gain >> 4 & 0xf) |
|
| 1453 |
|
|
RECLEVEL_GAIN_TO_VOXWARE(tt_dmasnd.input_gain & 0xf) << 8);
|
| 1454 |
|
|
}
|
| 1455 |
|
|
return AtaMixerIoctl(cmd, arg);
|
| 1456 |
|
|
}
|
| 1457 |
|
|
|
| 1458 |
|
|
static int AtaWriteSqSetup(void)
|
| 1459 |
|
|
{
|
| 1460 |
|
|
write_sq_ignore_int = 0;
|
| 1461 |
|
|
return 0 ;
|
| 1462 |
|
|
}
|
| 1463 |
|
|
|
| 1464 |
|
|
static int AtaSqOpen(mode_t mode)
|
| 1465 |
|
|
{
|
| 1466 |
|
|
write_sq_ignore_int = 1;
|
| 1467 |
|
|
return 0 ;
|
| 1468 |
|
|
}
|
| 1469 |
|
|
|
| 1470 |
|
|
static int TTStateInfo(char *buffer, size_t space)
|
| 1471 |
|
|
{
|
| 1472 |
|
|
int len = 0;
|
| 1473 |
|
|
len += sprintf(buffer+len, "\tvol left %ddB [-40... 0]\n",
|
| 1474 |
|
|
dmasound.volume_left);
|
| 1475 |
|
|
len += sprintf(buffer+len, "\tvol right %ddB [-40... 0]\n",
|
| 1476 |
|
|
dmasound.volume_right);
|
| 1477 |
|
|
len += sprintf(buffer+len, "\tbass %ddB [-12...+12]\n",
|
| 1478 |
|
|
dmasound.bass);
|
| 1479 |
|
|
len += sprintf(buffer+len, "\ttreble %ddB [-12...+12]\n",
|
| 1480 |
|
|
dmasound.treble);
|
| 1481 |
|
|
if (len >= space) {
|
| 1482 |
|
|
printk(KERN_ERR "dmasound_atari: overflowed state buffer alloc.\n") ;
|
| 1483 |
|
|
len = space ;
|
| 1484 |
|
|
}
|
| 1485 |
|
|
return len;
|
| 1486 |
|
|
}
|
| 1487 |
|
|
|
| 1488 |
|
|
static int FalconStateInfo(char *buffer, size_t space)
|
| 1489 |
|
|
{
|
| 1490 |
|
|
int len = 0;
|
| 1491 |
|
|
len += sprintf(buffer+len, "\tvol left %ddB [-22.5 ... 0]\n",
|
| 1492 |
|
|
dmasound.volume_left);
|
| 1493 |
|
|
len += sprintf(buffer+len, "\tvol right %ddB [-22.5 ... 0]\n",
|
| 1494 |
|
|
dmasound.volume_right);
|
| 1495 |
|
|
if (len >= space) {
|
| 1496 |
|
|
printk(KERN_ERR "dmasound_atari: overflowed state buffer alloc.\n") ;
|
| 1497 |
|
|
len = space ;
|
| 1498 |
|
|
}
|
| 1499 |
|
|
return len;
|
| 1500 |
|
|
}
|
| 1501 |
|
|
|
| 1502 |
|
|
|
| 1503 |
|
|
/*** Machine definitions *****************************************************/
|
| 1504 |
|
|
|
| 1505 |
|
|
static SETTINGS def_hard_falcon = {
|
| 1506 |
|
|
.format = AFMT_S8,
|
| 1507 |
|
|
.stereo = 0,
|
| 1508 |
|
|
.size = 8,
|
| 1509 |
|
|
.speed = 8195
|
| 1510 |
|
|
} ;
|
| 1511 |
|
|
|
| 1512 |
|
|
static SETTINGS def_hard_tt = {
|
| 1513 |
|
|
.format = AFMT_S8,
|
| 1514 |
|
|
.stereo = 0,
|
| 1515 |
|
|
.size = 8,
|
| 1516 |
|
|
.speed = 12517
|
| 1517 |
|
|
} ;
|
| 1518 |
|
|
|
| 1519 |
|
|
static SETTINGS def_soft = {
|
| 1520 |
|
|
.format = AFMT_U8,
|
| 1521 |
|
|
.stereo = 0,
|
| 1522 |
|
|
.size = 8,
|
| 1523 |
|
|
.speed = 8000
|
| 1524 |
|
|
} ;
|
| 1525 |
|
|
|
| 1526 |
|
|
static MACHINE machTT = {
|
| 1527 |
|
|
.name = "Atari",
|
| 1528 |
|
|
.name2 = "TT",
|
| 1529 |
|
|
.owner = THIS_MODULE,
|
| 1530 |
|
|
.dma_alloc = AtaAlloc,
|
| 1531 |
|
|
.dma_free = AtaFree,
|
| 1532 |
|
|
.irqinit = AtaIrqInit,
|
| 1533 |
|
|
#ifdef MODULE
|
| 1534 |
|
|
.irqcleanup = AtaIrqCleanUp,
|
| 1535 |
|
|
#endif /* MODULE */
|
| 1536 |
|
|
.init = TTInit,
|
| 1537 |
|
|
.silence = TTSilence,
|
| 1538 |
|
|
.setFormat = TTSetFormat,
|
| 1539 |
|
|
.setVolume = TTSetVolume,
|
| 1540 |
|
|
.setBass = AtaSetBass,
|
| 1541 |
|
|
.setTreble = AtaSetTreble,
|
| 1542 |
|
|
.setGain = TTSetGain,
|
| 1543 |
|
|
.play = AtaPlay,
|
| 1544 |
|
|
.mixer_init = TTMixerInit,
|
| 1545 |
|
|
.mixer_ioctl = TTMixerIoctl,
|
| 1546 |
|
|
.write_sq_setup = AtaWriteSqSetup,
|
| 1547 |
|
|
.sq_open = AtaSqOpen,
|
| 1548 |
|
|
.state_info = TTStateInfo,
|
| 1549 |
|
|
.min_dsp_speed = 6258,
|
| 1550 |
|
|
.version = ((DMASOUND_ATARI_REVISION<<8) | DMASOUND_ATARI_EDITION),
|
| 1551 |
|
|
.hardware_afmts = AFMT_S8, /* h'ware-supported formats *only* here */
|
| 1552 |
|
|
.capabilities = DSP_CAP_BATCH /* As per SNDCTL_DSP_GETCAPS */
|
| 1553 |
|
|
};
|
| 1554 |
|
|
|
| 1555 |
|
|
static MACHINE machFalcon = {
|
| 1556 |
|
|
.name = "Atari",
|
| 1557 |
|
|
.name2 = "FALCON",
|
| 1558 |
|
|
.dma_alloc = AtaAlloc,
|
| 1559 |
|
|
.dma_free = AtaFree,
|
| 1560 |
|
|
.irqinit = AtaIrqInit,
|
| 1561 |
|
|
#ifdef MODULE
|
| 1562 |
|
|
.irqcleanup = AtaIrqCleanUp,
|
| 1563 |
|
|
#endif /* MODULE */
|
| 1564 |
|
|
.init = FalconInit,
|
| 1565 |
|
|
.silence = FalconSilence,
|
| 1566 |
|
|
.setFormat = FalconSetFormat,
|
| 1567 |
|
|
.setVolume = FalconSetVolume,
|
| 1568 |
|
|
.setBass = AtaSetBass,
|
| 1569 |
|
|
.setTreble = AtaSetTreble,
|
| 1570 |
|
|
.play = AtaPlay,
|
| 1571 |
|
|
.mixer_init = FalconMixerInit,
|
| 1572 |
|
|
.mixer_ioctl = FalconMixerIoctl,
|
| 1573 |
|
|
.write_sq_setup = AtaWriteSqSetup,
|
| 1574 |
|
|
.sq_open = AtaSqOpen,
|
| 1575 |
|
|
.state_info = FalconStateInfo,
|
| 1576 |
|
|
.min_dsp_speed = 8195,
|
| 1577 |
|
|
.version = ((DMASOUND_ATARI_REVISION<<8) | DMASOUND_ATARI_EDITION),
|
| 1578 |
|
|
.hardware_afmts = (AFMT_S8 | AFMT_S16_BE), /* h'ware-supported formats *only* here */
|
| 1579 |
|
|
.capabilities = DSP_CAP_BATCH /* As per SNDCTL_DSP_GETCAPS */
|
| 1580 |
|
|
};
|
| 1581 |
|
|
|
| 1582 |
|
|
|
| 1583 |
|
|
/*** Config & Setup **********************************************************/
|
| 1584 |
|
|
|
| 1585 |
|
|
|
| 1586 |
|
|
static int __init dmasound_atari_init(void)
|
| 1587 |
|
|
{
|
| 1588 |
|
|
if (MACH_IS_ATARI && ATARIHW_PRESENT(PCM_8BIT)) {
|
| 1589 |
|
|
if (ATARIHW_PRESENT(CODEC)) {
|
| 1590 |
|
|
dmasound.mach = machFalcon;
|
| 1591 |
|
|
dmasound.mach.default_soft = def_soft ;
|
| 1592 |
|
|
dmasound.mach.default_hard = def_hard_falcon ;
|
| 1593 |
|
|
is_falcon = 1;
|
| 1594 |
|
|
} else if (ATARIHW_PRESENT(MICROWIRE)) {
|
| 1595 |
|
|
dmasound.mach = machTT;
|
| 1596 |
|
|
dmasound.mach.default_soft = def_soft ;
|
| 1597 |
|
|
dmasound.mach.default_hard = def_hard_tt ;
|
| 1598 |
|
|
is_falcon = 0;
|
| 1599 |
|
|
} else
|
| 1600 |
|
|
return -ENODEV;
|
| 1601 |
|
|
if ((mfp.int_en_a & mfp.int_mk_a & 0x20) == 0)
|
| 1602 |
|
|
return dmasound_init();
|
| 1603 |
|
|
else {
|
| 1604 |
|
|
printk("DMA sound driver: Timer A interrupt already in use\n");
|
| 1605 |
|
|
return -EBUSY;
|
| 1606 |
|
|
}
|
| 1607 |
|
|
}
|
| 1608 |
|
|
return -ENODEV;
|
| 1609 |
|
|
}
|
| 1610 |
|
|
|
| 1611 |
|
|
static void __exit dmasound_atari_cleanup(void)
|
| 1612 |
|
|
{
|
| 1613 |
|
|
dmasound_deinit();
|
| 1614 |
|
|
}
|
| 1615 |
|
|
|
| 1616 |
|
|
module_init(dmasound_atari_init);
|
| 1617 |
|
|
module_exit(dmasound_atari_cleanup);
|
| 1618 |
|
|
MODULE_LICENSE("GPL");
|
