patch-2.3.99-pre4 linux/drivers/sound/dmasound/dmasound_core.c
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- Lines: 1314
- Date:
Mon Apr 10 22:58:59 2000
- Orig file:
v2.3.99-pre3/linux/drivers/sound/dmasound/dmasound_core.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre3/linux/drivers/sound/dmasound/dmasound_core.c linux/drivers/sound/dmasound/dmasound_core.c
@@ -0,0 +1,1313 @@
+
+/*
+ * linux/drivers/sound/dmasound.c
+ *
+ *
+ * OSS/Free compatible Atari TT/Falcon and Amiga DMA sound driver for
+ * Linux/m68k
+ * Extended to support Power Macintosh for Linux/ppc by Paul Mackerras
+ *
+ * (c) 1995 by Michael Schlueter & Michael Marte
+ *
+ * Michael Schlueter (michael@duck.syd.de) did the basic structure of the VFS
+ * interface and the u-law to signed byte conversion.
+ *
+ * Michael Marte (marte@informatik.uni-muenchen.de) did the sound queue,
+ * /dev/mixer, /dev/sndstat and complemented the VFS interface. He would like
+ * to thank:
+ * - Michael Schlueter for initial ideas and documentation on the MFP and
+ * the DMA sound hardware.
+ * - Therapy? for their CD 'Troublegum' which really made me rock.
+ *
+ * /dev/sndstat is based on code by Hannu Savolainen, the author of the
+ * VoxWare family of drivers.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ * History:
+ *
+ * 1995/8/25 First release
+ *
+ * 1995/9/02 Roman Hodek:
+ * - Fixed atari_stram_alloc() call, the timer
+ * programming and several race conditions
+ * 1995/9/14 Roman Hodek:
+ * - After some discussion with Michael Schlueter,
+ * revised the interrupt disabling
+ * - Slightly speeded up U8->S8 translation by using
+ * long operations where possible
+ * - Added 4:3 interpolation for /dev/audio
+ *
+ * 1995/9/20 Torsten Scherer:
+ * - Fixed a bug in sq_write and changed /dev/audio
+ * converting to play at 12517Hz instead of 6258Hz.
+ *
+ * 1995/9/23 Torsten Scherer:
+ * - Changed sq_interrupt() and sq_play() to pre-program
+ * the DMA for another frame while there's still one
+ * running. This allows the IRQ response to be
+ * arbitrarily delayed and playing will still continue.
+ *
+ * 1995/10/14 Guenther Kelleter, Torsten Scherer:
+ * - Better support for Falcon audio (the Falcon doesn't
+ * raise an IRQ at the end of a frame, but at the
+ * beginning instead!). uses 'if (codec_dma)' in lots
+ * of places to simply switch between Falcon and TT
+ * code.
+ *
+ * 1995/11/06 Torsten Scherer:
+ * - Started introducing a hardware abstraction scheme
+ * (may perhaps also serve for Amigas?)
+ * - Can now play samples at almost all frequencies by
+ * means of a more generalized expand routine
+ * - Takes a good deal of care to cut data only at
+ * sample sizes
+ * - Buffer size is now a kernel runtime option
+ * - Implemented fsync() & several minor improvements
+ * Guenther Kelleter:
+ * - Useful hints and bug fixes
+ * - Cross-checked it for Falcons
+ *
+ * 1996/3/9 Geert Uytterhoeven:
+ * - Support added for Amiga, A-law, 16-bit little
+ * endian.
+ * - Unification to drivers/sound/dmasound.c.
+ *
+ * 1996/4/6 Martin Mitchell:
+ * - Updated to 1.3 kernel.
+ *
+ * 1996/6/13 Topi Kanerva:
+ * - Fixed things that were broken (mainly the amiga
+ * 14-bit routines)
+ * - /dev/sndstat shows now the real hardware frequency
+ * - The lowpass filter is disabled by default now
+ *
+ * 1996/9/25 Geert Uytterhoeven:
+ * - Modularization
+ *
+ * 1998/6/10 Andreas Schwab:
+ * - Converted to use sound_core
+ *
+ * 1999/12/28 Richard Zidlicky:
+ * - Added support for Q40
+ *
+ * 2000/2/27 Geert Uytterhoeven:
+ * - Clean up and split the code into 4 parts:
+ * o dmasound_core: machine-independent code
+ * o dmasound_atari: Atari TT and Falcon support
+ * o dmasound_awacs: Apple PowerMac support
+ * o dmasound_paula: Amiga support
+ *
+ * 2000/3/25 Geert Uytterhoeven:
+ * - Integration of dmasound_q40
+ * - Small clean ups
+ */
+
+
+#include <linux/module.h>
+#include <linux/malloc.h>
+#include <linux/sound.h>
+#include <linux/init.h>
+#include <linux/soundcard.h>
+
+#include <asm/uaccess.h>
+
+#include "dmasound.h"
+
+
+ /*
+ * Declarations
+ */
+
+int dmasound_catchRadius = 0;
+static unsigned int numWriteBufs = 4;
+static unsigned int writeBufSize = 32; /* in KB! */
+#ifdef HAS_RECORD
+static unsigned int numReadBufs = 4;
+static unsigned int readBufSize = 32; /* in KB! */
+#endif
+
+MODULE_PARM(dmasound_catchRadius, "i");
+MODULE_PARM(numWriteBufs, "i");
+MODULE_PARM(writeBufSize, "i");
+MODULE_PARM(numReadBufs, "i");
+MODULE_PARM(readBufSize, "i");
+
+#ifdef MODULE
+static int sq_unit = -1;
+static int mixer_unit = -1;
+static int state_unit = -1;
+static int irq_installed = 0;
+#endif /* MODULE */
+
+
+ /*
+ * Conversion tables
+ */
+
+#ifdef HAS_8BIT_TABLES
+/* 8 bit mu-law */
+
+char dmasound_ulaw2dma8[] = {
+ -126, -122, -118, -114, -110, -106, -102, -98,
+ -94, -90, -86, -82, -78, -74, -70, -66,
+ -63, -61, -59, -57, -55, -53, -51, -49,
+ -47, -45, -43, -41, -39, -37, -35, -33,
+ -31, -30, -29, -28, -27, -26, -25, -24,
+ -23, -22, -21, -20, -19, -18, -17, -16,
+ -16, -15, -15, -14, -14, -13, -13, -12,
+ -12, -11, -11, -10, -10, -9, -9, -8,
+ -8, -8, -7, -7, -7, -7, -6, -6,
+ -6, -6, -5, -5, -5, -5, -4, -4,
+ -4, -4, -4, -4, -3, -3, -3, -3,
+ -3, -3, -3, -3, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, 0,
+ 125, 121, 117, 113, 109, 105, 101, 97,
+ 93, 89, 85, 81, 77, 73, 69, 65,
+ 62, 60, 58, 56, 54, 52, 50, 48,
+ 46, 44, 42, 40, 38, 36, 34, 32,
+ 30, 29, 28, 27, 26, 25, 24, 23,
+ 22, 21, 20, 19, 18, 17, 16, 15,
+ 15, 14, 14, 13, 13, 12, 12, 11,
+ 11, 10, 10, 9, 9, 8, 8, 7,
+ 7, 7, 6, 6, 6, 6, 5, 5,
+ 5, 5, 4, 4, 4, 4, 3, 3,
+ 3, 3, 3, 3, 2, 2, 2, 2,
+ 2, 2, 2, 2, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* 8 bit A-law */
+
+char dmasound_alaw2dma8[] = {
+ -22, -21, -24, -23, -18, -17, -20, -19,
+ -30, -29, -32, -31, -26, -25, -28, -27,
+ -11, -11, -12, -12, -9, -9, -10, -10,
+ -15, -15, -16, -16, -13, -13, -14, -14,
+ -86, -82, -94, -90, -70, -66, -78, -74,
+ -118, -114, -126, -122, -102, -98, -110, -106,
+ -43, -41, -47, -45, -35, -33, -39, -37,
+ -59, -57, -63, -61, -51, -49, -55, -53,
+ -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -6, -6, -6, -6, -5, -5, -5, -5,
+ -8, -8, -8, -8, -7, -7, -7, -7,
+ -3, -3, -3, -3, -3, -3, -3, -3,
+ -4, -4, -4, -4, -4, -4, -4, -4,
+ 21, 20, 23, 22, 17, 16, 19, 18,
+ 29, 28, 31, 30, 25, 24, 27, 26,
+ 10, 10, 11, 11, 8, 8, 9, 9,
+ 14, 14, 15, 15, 12, 12, 13, 13,
+ 86, 82, 94, 90, 70, 66, 78, 74,
+ 118, 114, 126, 122, 102, 98, 110, 106,
+ 43, 41, 47, 45, 35, 33, 39, 37,
+ 59, 57, 63, 61, 51, 49, 55, 53,
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 5, 5, 5, 5, 4, 4, 4, 4,
+ 7, 7, 7, 7, 6, 6, 6, 6,
+ 2, 2, 2, 2, 2, 2, 2, 2,
+ 3, 3, 3, 3, 3, 3, 3, 3
+};
+#endif /* HAS_8BIT_TABLES */
+
+#ifdef HAS_16BIT_TABLES
+
+/* 16 bit mu-law */
+
+short dmasound_ulaw2dma16[] = {
+ -32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
+ -23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
+ -15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
+ -11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
+ -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
+ -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
+ -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
+ -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
+ -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
+ -1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
+ -876, -844, -812, -780, -748, -716, -684, -652,
+ -620, -588, -556, -524, -492, -460, -428, -396,
+ -372, -356, -340, -324, -308, -292, -276, -260,
+ -244, -228, -212, -196, -180, -164, -148, -132,
+ -120, -112, -104, -96, -88, -80, -72, -64,
+ -56, -48, -40, -32, -24, -16, -8, 0,
+ 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
+ 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
+ 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
+ 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
+ 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
+ 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
+ 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
+ 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
+ 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
+ 1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
+ 876, 844, 812, 780, 748, 716, 684, 652,
+ 620, 588, 556, 524, 492, 460, 428, 396,
+ 372, 356, 340, 324, 308, 292, 276, 260,
+ 244, 228, 212, 196, 180, 164, 148, 132,
+ 120, 112, 104, 96, 88, 80, 72, 64,
+ 56, 48, 40, 32, 24, 16, 8, 0,
+};
+
+/* 16 bit A-law */
+
+short dmasound_alaw2dma16[] = {
+ -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
+ -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
+ -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
+ -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
+ -22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
+ -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
+ -11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472,
+ -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
+ -344, -328, -376, -360, -280, -264, -312, -296,
+ -472, -456, -504, -488, -408, -392, -440, -424,
+ -88, -72, -120, -104, -24, -8, -56, -40,
+ -216, -200, -248, -232, -152, -136, -184, -168,
+ -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
+ -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
+ -688, -656, -752, -720, -560, -528, -624, -592,
+ -944, -912, -1008, -976, -816, -784, -880, -848,
+ 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
+ 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
+ 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
+ 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
+ 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
+ 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
+ 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
+ 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
+ 344, 328, 376, 360, 280, 264, 312, 296,
+ 472, 456, 504, 488, 408, 392, 440, 424,
+ 88, 72, 120, 104, 24, 8, 56, 40,
+ 216, 200, 248, 232, 152, 136, 184, 168,
+ 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
+ 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
+ 688, 656, 752, 720, 560, 528, 624, 592,
+ 944, 912, 1008, 976, 816, 784, 880, 848,
+};
+#endif /* HAS_16BIT_TABLES */
+
+
+#ifdef HAS_14BIT_TABLES
+
+ /*
+ * Unused for now. Where are the MSB parts anyway??
+ */
+
+/* 14 bit mu-law (LSB) */
+
+char dmasound_ulaw2dma14l[] = {
+ 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33,
+ 33, 33, 33, 33, 33, 33, 33, 33,
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ 49, 17, 49, 17, 49, 17, 49, 17,
+ 49, 17, 49, 17, 49, 17, 49, 17,
+ 41, 57, 9, 25, 41, 57, 9, 25,
+ 41, 57, 9, 25, 41, 57, 9, 25,
+ 37, 45, 53, 61, 5, 13, 21, 29,
+ 37, 45, 53, 61, 5, 13, 21, 29,
+ 35, 39, 43, 47, 51, 55, 59, 63,
+ 3, 7, 11, 15, 19, 23, 27, 31,
+ 34, 36, 38, 40, 42, 44, 46, 48,
+ 50, 52, 54, 56, 58, 60, 62, 0,
+ 31, 31, 31, 31, 31, 31, 31, 31,
+ 31, 31, 31, 31, 31, 31, 31, 31,
+ 31, 31, 31, 31, 31, 31, 31, 31,
+ 31, 31, 31, 31, 31, 31, 31, 31,
+ 63, 63, 63, 63, 63, 63, 63, 63,
+ 63, 63, 63, 63, 63, 63, 63, 63,
+ 15, 47, 15, 47, 15, 47, 15, 47,
+ 15, 47, 15, 47, 15, 47, 15, 47,
+ 23, 7, 55, 39, 23, 7, 55, 39,
+ 23, 7, 55, 39, 23, 7, 55, 39,
+ 27, 19, 11, 3, 59, 51, 43, 35,
+ 27, 19, 11, 3, 59, 51, 43, 35,
+ 29, 25, 21, 17, 13, 9, 5, 1,
+ 61, 57, 53, 49, 45, 41, 37, 33,
+ 30, 28, 26, 24, 22, 20, 18, 16,
+ 14, 12, 10, 8, 6, 4, 2, 0
+};
+
+/* 14 bit A-law (LSB) */
+
+char dmasound_alaw2dma14l[] = {
+ 32, 32, 32, 32, 32, 32, 32, 32,
+ 32, 32, 32, 32, 32, 32, 32, 32,
+ 16, 48, 16, 48, 16, 48, 16, 48,
+ 16, 48, 16, 48, 16, 48, 16, 48,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 42, 46, 34, 38, 58, 62, 50, 54,
+ 10, 14, 2, 6, 26, 30, 18, 22,
+ 42, 46, 34, 38, 58, 62, 50, 54,
+ 10, 14, 2, 6, 26, 30, 18, 22,
+ 40, 56, 8, 24, 40, 56, 8, 24,
+ 40, 56, 8, 24, 40, 56, 8, 24,
+ 20, 28, 4, 12, 52, 60, 36, 44,
+ 20, 28, 4, 12, 52, 60, 36, 44,
+ 32, 32, 32, 32, 32, 32, 32, 32,
+ 32, 32, 32, 32, 32, 32, 32, 32,
+ 48, 16, 48, 16, 48, 16, 48, 16,
+ 48, 16, 48, 16, 48, 16, 48, 16,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 22, 18, 30, 26, 6, 2, 14, 10,
+ 54, 50, 62, 58, 38, 34, 46, 42,
+ 22, 18, 30, 26, 6, 2, 14, 10,
+ 54, 50, 62, 58, 38, 34, 46, 42,
+ 24, 8, 56, 40, 24, 8, 56, 40,
+ 24, 8, 56, 40, 24, 8, 56, 40,
+ 44, 36, 60, 52, 12, 4, 28, 20,
+ 44, 36, 60, 52, 12, 4, 28, 20
+};
+#endif /* HAS_14BIT_TABLES */
+
+
+ /*
+ * Common stuff
+ */
+
+static long long sound_lseek(struct file *file, long long offset, int orig)
+{
+ return -ESPIPE;
+}
+
+
+ /*
+ * Mid level stuff
+ */
+
+struct sound_settings dmasound;
+
+static inline void sound_silence(void)
+{
+ /* update hardware settings one more */
+ dmasound.mach.init();
+
+ dmasound.mach.silence();
+}
+
+static inline void sound_init(void)
+{
+ dmasound.mach.init();
+}
+
+static inline int sound_set_format(int format)
+{
+ return dmasound.mach.setFormat(format);
+}
+
+static int sound_set_speed(int speed)
+{
+ if (speed < 0)
+ return dmasound.soft.speed;
+
+ dmasound.soft.speed = speed;
+ dmasound.mach.init();
+ if (dmasound.minDev == SND_DEV_DSP)
+ dmasound.dsp.speed = dmasound.soft.speed;
+
+ return dmasound.soft.speed;
+}
+
+static int sound_set_stereo(int stereo)
+{
+ if (stereo < 0)
+ return dmasound.soft.stereo;
+
+ stereo = !!stereo; /* should be 0 or 1 now */
+
+ dmasound.soft.stereo = stereo;
+ if (dmasound.minDev == SND_DEV_DSP)
+ dmasound.dsp.stereo = stereo;
+ dmasound.mach.init();
+
+ return stereo;
+}
+
+static ssize_t sound_copy_translate(TRANS *trans, const u_char *userPtr,
+ size_t userCount, u_char frame[],
+ ssize_t *frameUsed, ssize_t frameLeft)
+{
+ ssize_t (*ct_func)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
+
+ switch (dmasound.soft.format) {
+ case AFMT_MU_LAW:
+ ct_func = trans->ct_ulaw;
+ break;
+ case AFMT_A_LAW:
+ ct_func = trans->ct_alaw;
+ break;
+ case AFMT_S8:
+ ct_func = trans->ct_s8;
+ break;
+ case AFMT_U8:
+ ct_func = trans->ct_u8;
+ break;
+ case AFMT_S16_BE:
+ ct_func = trans->ct_s16be;
+ break;
+ case AFMT_U16_BE:
+ ct_func = trans->ct_u16be;
+ break;
+ case AFMT_S16_LE:
+ ct_func = trans->ct_s16le;
+ break;
+ case AFMT_U16_LE:
+ ct_func = trans->ct_u16le;
+ break;
+ default:
+ return 0;
+ }
+ return ct_func(userPtr, userCount, frame, frameUsed, frameLeft);
+}
+
+
+ /*
+ * /dev/mixer abstraction
+ */
+
+static struct {
+ int busy;
+ int modify_counter;
+} mixer;
+
+static int mixer_open(struct inode *inode, struct file *file)
+{
+ MOD_INC_USE_COUNT;
+ dmasound.mach.open();
+ mixer.busy = 1;
+ return 0;
+}
+
+static int mixer_release(struct inode *inode, struct file *file)
+{
+ mixer.busy = 0;
+ dmasound.mach.release();
+ MOD_DEC_USE_COUNT;
+ return 0;
+}
+static int mixer_ioctl(struct inode *inode, struct file *file, u_int cmd,
+ u_long arg)
+{
+ if (_SIOC_DIR(cmd) & _SIOC_WRITE)
+ mixer.modify_counter++;
+ switch (cmd) {
+ case OSS_GETVERSION:
+ return IOCTL_OUT(arg, SOUND_VERSION);
+ case SOUND_MIXER_INFO:
+ {
+ mixer_info info;
+ strncpy(info.id, dmasound.mach.name2, sizeof(info.id));
+ strncpy(info.name, dmasound.mach.name2, sizeof(info.name));
+ info.name[sizeof(info.name)-1] = 0;
+ info.modify_counter = mixer.modify_counter;
+ copy_to_user_ret((int *)arg, &info, sizeof(info), -EFAULT);
+ return 0;
+ }
+ }
+ if (dmasound.mach.mixer_ioctl)
+ return dmasound.mach.mixer_ioctl(cmd, arg);
+ return -EINVAL;
+}
+
+static struct file_operations mixer_fops =
+{
+ llseek: sound_lseek,
+ ioctl: mixer_ioctl,
+ open: mixer_open,
+ release: mixer_release,
+};
+
+static void __init mixer_init(void)
+{
+#ifndef MODULE
+ int mixer_unit;
+#endif
+ mixer_unit = register_sound_mixer(&mixer_fops, -1);
+ if (mixer_unit < 0)
+ return;
+
+ mixer.busy = 0;
+ dmasound.treble = 0;
+ dmasound.bass = 0;
+ if (dmasound.mach.mixer_init)
+ dmasound.mach.mixer_init();
+}
+
+
+ /*
+ * Sound queue stuff, the heart of the driver
+ */
+
+struct sound_queue dmasound_write_sq;
+#ifdef HAS_RECORD
+struct sound_queue dmasound_read_sq;
+#endif
+
+static int sq_allocate_buffers(struct sound_queue *sq, int num, int size)
+{
+ int i;
+
+ if (sq->buffers)
+ return 0;
+ sq->numBufs = num;
+ sq->bufSize = size;
+ sq->buffers = kmalloc (num * sizeof(char *), GFP_KERNEL);
+ if (!sq->buffers)
+ return -ENOMEM;
+ for (i = 0; i < num; i++) {
+ sq->buffers[i] = dmasound.mach.dma_alloc(size, GFP_KERNEL);
+ if (!sq->buffers[i]) {
+ while (i--)
+ dmasound.mach.dma_free(sq->buffers[i], size);
+ kfree(sq->buffers);
+ sq->buffers = 0;
+ return -ENOMEM;
+ }
+ }
+ return 0;
+}
+
+static void sq_release_buffers(struct sound_queue *sq)
+{
+ int i;
+
+ if (sq->buffers) {
+ if (sq != &write_sq && dmasound.mach.abort_read)
+ dmasound.mach.abort_read();
+ for (i = 0; i < sq->numBufs; i++)
+ dmasound.mach.dma_free(sq->buffers[i], sq->bufSize);
+ kfree(sq->buffers);
+ sq->buffers = NULL;
+ }
+}
+
+static void sq_setup(struct sound_queue *sq, int max_count, int max_active,
+ int block_size)
+{
+ void (*setup_func)(void);
+
+ sq->max_count = max_count;
+ sq->max_active = max_active;
+ sq->block_size = block_size;
+
+ sq->front = sq->count = sq->rear_size = 0;
+ sq->syncing = 0;
+ sq->active = 0;
+
+ if (sq == &write_sq) {
+ sq->rear = -1;
+ setup_func = dmasound.mach.write_sq_setup;
+ } else {
+ sq->rear = 0;
+ setup_func = dmasound.mach.read_sq_setup;
+ }
+ if (setup_func)
+ setup_func();
+}
+
+static inline void sq_play(void)
+{
+ dmasound.mach.play();
+}
+
+static ssize_t sq_write(struct file *file, const char *src, size_t uLeft,
+ loff_t *ppos)
+{
+ ssize_t uWritten = 0;
+ u_char *dest;
+ ssize_t uUsed, bUsed, bLeft;
+
+ /* ++TeSche: Is something like this necessary?
+ * Hey, that's an honest question! Or does any other part of the
+ * filesystem already checks this situation? I really don't know.
+ */
+ if (uLeft == 0)
+ return 0;
+
+ /* The interrupt doesn't start to play the last, incomplete frame.
+ * Thus we can append to it without disabling the interrupts! (Note
+ * also that write_sq.rear isn't affected by the interrupt.)
+ */
+
+ if (write_sq.count > 0 &&
+ (bLeft = write_sq.block_size-write_sq.rear_size) > 0) {
+ dest = write_sq.buffers[write_sq.rear];
+ bUsed = write_sq.rear_size;
+ uUsed = sound_copy_translate(dmasound.trans_write, src, uLeft,
+ dest, &bUsed, bLeft);
+ if (uUsed <= 0)
+ return uUsed;
+ src += uUsed;
+ uWritten += uUsed;
+ uLeft -= uUsed;
+ write_sq.rear_size = bUsed;
+ }
+
+ do {
+ while (write_sq.count == write_sq.max_active) {
+ sq_play();
+ if (write_sq.open_mode & O_NONBLOCK)
+ return uWritten > 0 ? uWritten : -EAGAIN;
+ SLEEP(write_sq.action_queue);
+ if (signal_pending(current))
+ return uWritten > 0 ? uWritten : -EINTR;
+ }
+
+ /* Here, we can avoid disabling the interrupt by first
+ * copying and translating the data, and then updating
+ * the write_sq variables. Until this is done, the interrupt
+ * won't see the new frame and we can work on it
+ * undisturbed.
+ */
+
+ dest = write_sq.buffers[(write_sq.rear+1) % write_sq.max_count];
+ bUsed = 0;
+ bLeft = write_sq.block_size;
+ uUsed = sound_copy_translate(dmasound.trans_write, src, uLeft,
+ dest, &bUsed, bLeft);
+ if (uUsed <= 0)
+ break;
+ src += uUsed;
+ uWritten += uUsed;
+ uLeft -= uUsed;
+ if (bUsed) {
+ write_sq.rear = (write_sq.rear+1) % write_sq.max_count;
+ write_sq.rear_size = bUsed;
+ write_sq.count++;
+ }
+ } while (bUsed); /* uUsed may have been 0 */
+
+ sq_play();
+
+ return uUsed < 0? uUsed: uWritten;
+}
+
+#ifdef HAS_RECORD
+ /*
+ * Here is how the values are used for reading.
+ * The value 'active' simply indicates the DMA is running. This is done
+ * so the driver semantics are DMA starts when the first read is posted.
+ * The value 'front' indicates the buffer we should next send to the user.
+ * The value 'rear' indicates the buffer the DMA is currently filling.
+ * When 'front' == 'rear' the buffer "ring" is empty (we always have an
+ * empty available). The 'rear_size' is used to track partial offsets
+ * into the current buffer. Right now, I just keep the DMA running. If
+ * the reader can't keep up, the interrupt tosses the oldest buffer. We
+ * could also shut down the DMA in this case.
+ */
+
+static ssize_t sq_read(struct file *file, char *dst, size_t uLeft,
+ loff_t *ppos)
+{
+
+ ssize_t uRead, bLeft, bUsed, uUsed;
+
+ if (uLeft == 0)
+ return 0;
+
+ if (!read_sq.active && dmasound.mach.record)
+ dmasound.mach.record(); /* Kick off the record process. */
+
+ uRead = 0;
+
+ /* Move what the user requests, depending upon other options.
+ */
+ while (uLeft > 0) {
+
+ /* When front == rear, the DMA is not done yet.
+ */
+ while (read_sq.front == read_sq.rear) {
+ if (read_sq.open_mode & O_NONBLOCK) {
+ return uRead > 0 ? uRead : -EAGAIN;
+ }
+ SLEEP(read_sq.action_queue);
+ if (signal_pending(current))
+ return uRead > 0 ? uRead : -EINTR;
+ }
+
+ /* The amount we move is either what is left in the
+ * current buffer or what the user wants.
+ */
+ bLeft = read_sq.block_size - read_sq.rear_size;
+ bUsed = read_sq.rear_size;
+ uUsed = sound_copy_translate(dmasound.trans_read, dst, uLeft,
+ read_sq.buffers[read_sq.front],
+ &bUsed, bLeft);
+ if (uUsed <= 0)
+ return uUsed;
+ dst += uUsed;
+ uRead += uUsed;
+ uLeft -= uUsed;
+ read_sq.rear_size += bUsed;
+ if (read_sq.rear_size >= read_sq.block_size) {
+ read_sq.rear_size = 0;
+ read_sq.front++;
+ if (read_sq.front >= read_sq.max_active)
+ read_sq.front = 0;
+ }
+ }
+ return uRead;
+}
+#endif /* HAS_RECORD */
+
+static inline void sq_init_waitqueue(struct sound_queue *sq)
+{
+ init_waitqueue_head(&sq->action_queue);
+ init_waitqueue_head(&sq->open_queue);
+ init_waitqueue_head(&sq->sync_queue);
+ sq->busy = 0;
+}
+
+static inline void sq_wake_up(struct sound_queue *sq, struct file *file,
+ mode_t mode)
+{
+ if (file->f_mode & mode) {
+ sq->busy = 0;
+ WAKE_UP(sq->open_queue);
+ }
+}
+
+static int sq_open2(struct sound_queue *sq, struct file *file, mode_t mode,
+ int numbufs, int bufsize)
+{
+ int rc = 0;
+
+ if (file->f_mode & mode) {
+ if (sq->busy) {
+ rc = -EBUSY;
+ if (file->f_flags & O_NONBLOCK)
+ return rc;
+ rc = -EINTR;
+ while (sq->busy) {
+ SLEEP(sq->open_queue);
+ if (signal_pending(current))
+ return rc;
+ }
+ rc = 0;
+ }
+ sq->busy = 1; /* Let's play spot-the-race-condition */
+
+ if (sq_allocate_buffers(sq, numbufs, bufsize)) {
+ sq_wake_up(sq, file, mode);
+ return rc;
+ }
+
+ sq_setup(sq, numbufs, numbufs, bufsize);
+ sq->open_mode = file->f_mode;
+ }
+ return rc;
+}
+
+#define write_sq_init_waitqueue() sq_init_waitqueue(&write_sq)
+#define write_sq_wake_up(file) sq_wake_up(&write_sq, file, FMODE_WRITE)
+#define write_sq_release_buffers() sq_release_buffers(&write_sq)
+#define write_sq_open(file) \
+ sq_open2(&write_sq, file, FMODE_WRITE, numWriteBufs, writeBufSize << 10)
+
+#ifdef HAS_RECORD
+#define read_sq_init_waitqueue() sq_init_waitqueue(&read_sq)
+#define read_sq_wake_up(file) sq_wake_up(&read_sq, file, FMODE_READ)
+#define read_sq_release_buffers() sq_release_buffers(&read_sq)
+#define read_sq_open(file) \
+ sq_open2(&read_sq, file, FMODE_READ, numReadBufs, readBufSize << 10)
+#else /* !HAS_RECORD */
+#define read_sq_init_waitqueue() do {} while (0)
+#define read_sq_wake_up(file) do {} while (0)
+#define read_sq_release_buffers() do {} while (0)
+#define read_sq_open(file) (0)
+#endif /* !HAS_RECORD */
+
+static int sq_open(struct inode *inode, struct file *file)
+{
+ int rc;
+
+ MOD_INC_USE_COUNT;
+ dmasound.mach.open();
+ if ((rc = write_sq_open(file)) || (rc = read_sq_open(file))) {
+ dmasound.mach.release();
+ MOD_DEC_USE_COUNT;
+ return rc;
+ }
+
+ if (dmasound.mach.sq_open)
+ dmasound.mach.sq_open();
+ dmasound.minDev = MINOR(inode->i_rdev) & 0x0f;
+ dmasound.soft = dmasound.dsp;
+ dmasound.hard = dmasound.dsp;
+ sound_init();
+ if ((MINOR(inode->i_rdev) & 0x0f) == SND_DEV_AUDIO) {
+ sound_set_speed(8000);
+ sound_set_stereo(0);
+ sound_set_format(AFMT_MU_LAW);
+ }
+
+#if 0
+ if (file->f_mode == FMODE_READ && dmasound.mach.record) {
+ /* Start dma'ing straight away */
+ dmasound.mach.record();
+ }
+#endif
+
+ return 0;
+}
+
+static void sq_reset(void)
+{
+ sound_silence();
+ write_sq.active = 0;
+ write_sq.count = 0;
+ write_sq.front = (write_sq.rear+1) % write_sq.max_count;
+}
+
+static int sq_fsync(struct file *filp, struct dentry *dentry)
+{
+ int rc = 0;
+
+ write_sq.syncing = 1;
+ sq_play(); /* there may be an incomplete frame waiting */
+
+ while (write_sq.active) {
+ SLEEP(write_sq.sync_queue);
+ if (signal_pending(current)) {
+ /* While waiting for audio output to drain, an
+ * interrupt occurred. Stop audio output immediately
+ * and clear the queue. */
+ sq_reset();
+ rc = -EINTR;
+ break;
+ }
+ }
+
+ write_sq.syncing = 0;
+ return rc;
+}
+
+static int sq_release(struct inode *inode, struct file *file)
+{
+ int rc = 0;
+
+ if (write_sq.busy)
+ rc = sq_fsync(file, file->f_dentry);
+ dmasound.soft = dmasound.dsp;
+ dmasound.hard = dmasound.dsp;
+ sound_silence();
+
+ write_sq_release_buffers();
+ read_sq_release_buffers();
+ dmasound.mach.release();
+ MOD_DEC_USE_COUNT;
+
+ /* There is probably a DOS atack here. They change the mode flag. */
+ /* XXX add check here */
+ read_sq_wake_up(file);
+ write_sq_wake_up(file);
+
+ /* Wake up a process waiting for the queue being released.
+ * Note: There may be several processes waiting for a call
+ * to open() returning. */
+
+ return rc;
+}
+
+static int sq_ioctl(struct inode *inode, struct file *file, u_int cmd,
+ u_long arg)
+{
+ u_long fmt;
+ int data;
+ int size, nbufs;
+ audio_buf_info info;
+
+ switch (cmd) {
+ case SNDCTL_DSP_RESET:
+ sq_reset();
+ return 0;
+ case SNDCTL_DSP_POST:
+ case SNDCTL_DSP_SYNC:
+ return sq_fsync(file, file->f_dentry);
+
+ /* ++TeSche: before changing any of these it's
+ * probably wise to wait until sound playing has
+ * settled down. */
+ case SNDCTL_DSP_SPEED:
+ sq_fsync(file, file->f_dentry);
+ IOCTL_IN(arg, data);
+ return IOCTL_OUT(arg, sound_set_speed(data));
+ case SNDCTL_DSP_STEREO:
+ sq_fsync(file, file->f_dentry);
+ IOCTL_IN(arg, data);
+ return IOCTL_OUT(arg, sound_set_stereo(data));
+ case SOUND_PCM_WRITE_CHANNELS:
+ sq_fsync(file, file->f_dentry);
+ IOCTL_IN(arg, data);
+ return IOCTL_OUT(arg, sound_set_stereo(data-1)+1);
+ case SNDCTL_DSP_SETFMT:
+ sq_fsync(file, file->f_dentry);
+ IOCTL_IN(arg, data);
+ return IOCTL_OUT(arg, sound_set_format(data));
+ case SNDCTL_DSP_GETFMTS:
+ fmt = 0;
+ if (dmasound.trans_write) {
+ if (dmasound.trans_write->ct_ulaw)
+ fmt |= AFMT_MU_LAW;
+ if (dmasound.trans_write->ct_alaw)
+ fmt |= AFMT_A_LAW;
+ if (dmasound.trans_write->ct_s8)
+ fmt |= AFMT_S8;
+ if (dmasound.trans_write->ct_u8)
+ fmt |= AFMT_U8;
+ if (dmasound.trans_write->ct_s16be)
+ fmt |= AFMT_S16_BE;
+ if (dmasound.trans_write->ct_u16be)
+ fmt |= AFMT_U16_BE;
+ if (dmasound.trans_write->ct_s16le)
+ fmt |= AFMT_S16_LE;
+ if (dmasound.trans_write->ct_u16le)
+ fmt |= AFMT_U16_LE;
+ }
+ return IOCTL_OUT(arg, fmt);
+ case SNDCTL_DSP_GETBLKSIZE:
+ size = write_sq.block_size
+ * dmasound.soft.size * (dmasound.soft.stereo + 1)
+ / (dmasound.hard.size * (dmasound.hard.stereo + 1));
+ return IOCTL_OUT(arg, size);
+ case SNDCTL_DSP_SUBDIVIDE:
+ break;
+ case SNDCTL_DSP_SETFRAGMENT:
+ if (write_sq.count || write_sq.active || write_sq.syncing)
+ return -EINVAL;
+ IOCTL_IN(arg, size);
+ nbufs = size >> 16;
+ if (nbufs < 2 || nbufs > write_sq.numBufs)
+ nbufs = write_sq.numBufs;
+ size &= 0xffff;
+ if (size >= 8 && size <= 29) {
+ size = 1 << size;
+ size *= dmasound.hard.size * (dmasound.hard.stereo + 1);
+ size /= dmasound.soft.size * (dmasound.soft.stereo + 1);
+ if (size > write_sq.bufSize)
+ size = write_sq.bufSize;
+ } else
+ size = write_sq.bufSize;
+ sq_setup(&write_sq, write_sq.numBufs, nbufs, size);
+ return 0;
+ case SNDCTL_DSP_GETOSPACE:
+ info.fragments = write_sq.max_active - write_sq.count;
+ info.fragstotal = write_sq.max_active;
+ info.fragsize = write_sq.block_size;
+ info.bytes = info.fragments * info.fragsize;
+ if (copy_to_user((void *)arg, &info, sizeof(info)))
+ return -EFAULT;
+ return 0;
+
+ default:
+ return mixer_ioctl(inode, file, cmd, arg);
+ }
+ return -EINVAL;
+}
+
+static struct file_operations sq_fops =
+{
+ llseek: sound_lseek,
+ write: sq_write,
+ ioctl: sq_ioctl,
+ open: sq_open,
+ release: sq_release,
+#ifdef HAS_RECORD
+ read: sq_read,
+#endif
+};
+
+static void __init sq_init(void)
+{
+#ifndef MODULE
+ int sq_unit;
+#endif
+ sq_unit = register_sound_dsp(&sq_fops, -1);
+ if (sq_unit < 0)
+ return;
+
+ write_sq_init_waitqueue();
+ read_sq_init_waitqueue();
+
+ /* whatever you like as startup mode for /dev/dsp,
+ * (/dev/audio hasn't got a startup mode). note that
+ * once changed a new open() will *not* restore these!
+ */
+ dmasound.dsp.format = AFMT_U8;
+ dmasound.dsp.stereo = 0;
+ dmasound.dsp.size = 8;
+
+ /* set minimum rate possible without expanding */
+ dmasound.dsp.speed = dmasound.mach.min_dsp_speed;
+
+ /* before the first open to /dev/dsp this wouldn't be set */
+ dmasound.soft = dmasound.dsp;
+ dmasound.hard = dmasound.dsp;
+
+ sound_silence();
+}
+
+
+ /*
+ * /dev/sndstat
+ */
+
+static struct {
+ int busy;
+ char buf[512]; /* state.buf should not overflow! */
+ int len, ptr;
+} state;
+
+static int state_open(struct inode *inode, struct file *file)
+{
+ char *buffer = state.buf;
+ int len = 0;
+
+ if (state.busy)
+ return -EBUSY;
+
+ MOD_INC_USE_COUNT;
+ dmasound.mach.open();
+ state.ptr = 0;
+ state.busy = 1;
+
+ len += sprintf(buffer+len, "%sDMA sound driver:\n", dmasound.mach.name);
+
+ len += sprintf(buffer+len, "\tsound.format = 0x%x",
+ dmasound.soft.format);
+ switch (dmasound.soft.format) {
+ case AFMT_MU_LAW:
+ len += sprintf(buffer+len, " (mu-law)");
+ break;
+ case AFMT_A_LAW:
+ len += sprintf(buffer+len, " (A-law)");
+ break;
+ case AFMT_U8:
+ len += sprintf(buffer+len, " (unsigned 8 bit)");
+ break;
+ case AFMT_S8:
+ len += sprintf(buffer+len, " (signed 8 bit)");
+ break;
+ case AFMT_S16_BE:
+ len += sprintf(buffer+len, " (signed 16 bit big)");
+ break;
+ case AFMT_U16_BE:
+ len += sprintf(buffer+len, " (unsigned 16 bit big)");
+ break;
+ case AFMT_S16_LE:
+ len += sprintf(buffer+len, " (signed 16 bit little)");
+ break;
+ case AFMT_U16_LE:
+ len += sprintf(buffer+len, " (unsigned 16 bit little)");
+ break;
+ }
+ len += sprintf(buffer+len, "\n");
+ len += sprintf(buffer+len, "\tsound.speed = %dHz (phys. %dHz)\n",
+ dmasound.soft.speed, dmasound.hard.speed);
+ len += sprintf(buffer+len, "\tsound.stereo = 0x%x (%s)\n",
+ dmasound.soft.stereo,
+ dmasound.soft.stereo ? "stereo" : "mono");
+ if (dmasound.mach.state_info)
+ len += dmasound.mach.state_info(buffer);
+ len += sprintf(buffer+len, "\tsq.block_size = %d sq.max_count = %d"
+ " sq.max_active = %d\n",
+ write_sq.block_size, write_sq.max_count,
+ write_sq.max_active);
+ len += sprintf(buffer+len, "\tsq.count = %d sq.rear_size = %d\n",
+ write_sq.count, write_sq.rear_size);
+ len += sprintf(buffer+len, "\tsq.active = %d sq.syncing = %d\n",
+ write_sq.active, write_sq.syncing);
+ state.len = len;
+ return 0;
+}
+
+static int state_release(struct inode *inode, struct file *file)
+{
+ state.busy = 0;
+ dmasound.mach.release();
+ MOD_DEC_USE_COUNT;
+ return 0;
+}
+
+static ssize_t state_read(struct file *file, char *buf, size_t count,
+ loff_t *ppos)
+{
+ int n = state.len - state.ptr;
+ if (n > count)
+ n = count;
+ if (n <= 0)
+ return 0;
+ if (copy_to_user(buf, &state.buf[state.ptr], n))
+ return -EFAULT;
+ state.ptr += n;
+ return n;
+}
+
+static struct file_operations state_fops =
+{
+ llseek: sound_lseek,
+ read: state_read,
+ open: state_open,
+ release: state_release,
+};
+
+static void __init state_init(void)
+{
+#ifndef MODULE
+ int state_unit;
+#endif
+ state_unit = register_sound_special(&state_fops, SND_DEV_STATUS);
+ if (state_unit < 0)
+ return;
+ state.busy = 0;
+}
+
+
+ /*
+ * Config & Setup
+ *
+ * This function is called by _one_ chipset-specific driver
+ */
+
+int __init dmasound_init(void)
+{
+ if (irq_installed)
+ return -EBUSY;
+
+ /* Set up sound queue, /dev/audio and /dev/dsp. */
+
+ /* Set default settings. */
+ sq_init();
+
+ /* Set up /dev/sndstat. */
+ state_init();
+
+ /* Set up /dev/mixer. */
+ mixer_init();
+
+ if (!dmasound.mach.irqinit()) {
+ printk(KERN_ERR "DMA sound driver: Interrupt initialization failed\n");
+ return -ENODEV;
+ }
+#ifdef MODULE
+ irq_installed = 1;
+#endif
+
+ printk(KERN_INFO "DMA sound driver installed, using %d buffers of %dk.\n",
+ numWriteBufs, writeBufSize);
+
+ return 0;
+}
+
+#ifdef MODULE
+
+void dmasound_deinit(void)
+{
+ if (irq_installed) {
+ sound_silence();
+ dmasound.mach.irqcleanup();
+ }
+
+ write_sq_release_buffers();
+ read_sq_release_buffers();
+
+ if (mixer_unit >= 0)
+ unregister_sound_mixer(mixer_unit);
+ if (state_unit >= 0)
+ unregister_sound_special(state_unit);
+ if (sq_unit >= 0)
+ unregister_sound_dsp(sq_unit);
+}
+
+#else /* !MODULE */
+
+static int __init dmasound_setup(char *str)
+{
+ int ints[6];
+
+ str = get_options(str, ARRAY_SIZE(ints), ints);
+
+ /* check the bootstrap parameter for "dmasound=" */
+
+ switch (ints[0]) {
+ case 3:
+ if ((ints[3] < 0) || (ints[3] > MAX_CATCH_RADIUS))
+ printk("dmasound_setup: illegal catch radius, using default = %d\n", catchRadius);
+ else
+ catchRadius = ints[3];
+ /* fall through */
+ case 2:
+ if (ints[1] < MIN_BUFFERS)
+ printk("dmasound_setup: illegal number of buffers, using default = %d\n", numWriteBufs);
+ else
+ numWriteBufs = ints[1];
+ if (ints[2] < MIN_BUFSIZE || ints[2] > MAX_BUFSIZE)
+ printk("dmasound_setup: illegal buffer size, using default = %dK\n", writeBufSize);
+ else
+ writeBufSize = ints[2];
+ break;
+ case 0:
+ break;
+ default:
+ printk("dmasound_setup: illegal number of arguments\n");
+ return 0;
+ }
+ return 1;
+}
+
+__setup("dmasound=", dmasound_setup);
+
+#endif /* !MODULE */
+
+
+ /*
+ * Visible symbols for modules
+ */
+
+EXPORT_SYMBOL(dmasound);
+EXPORT_SYMBOL(dmasound_init);
+#ifdef MODULE
+EXPORT_SYMBOL(dmasound_deinit);
+#endif
+EXPORT_SYMBOL(dmasound_write_sq);
+#ifdef HAS_RECORD
+EXPORT_SYMBOL(dmasound_read_sq);
+#endif
+EXPORT_SYMBOL(dmasound_catchRadius);
+#ifdef HAS_8BIT_TABLES
+EXPORT_SYMBOL(dmasound_ulaw2dma8);
+EXPORT_SYMBOL(dmasound_alaw2dma8);
+#endif
+#ifdef HAS_16BIT_TABLES
+EXPORT_SYMBOL(dmasound_ulaw2dma16);
+EXPORT_SYMBOL(dmasound_alaw2dma16);
+#endif
+#ifdef HAS_14BIT_TABLES
+EXPORT_SYMBOL(dmasound_ulaw2dma14l);
+EXPORT_SYMBOL(dmasound_ulaw2dma14h);
+EXPORT_SYMBOL(dmasound_alaw2dma14l);
+EXPORT_SYMBOL(dmasound_alaw2dma14h);
+#endif
+
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)