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One of ioctl definition in sound/sb16_csp.h contains the data size over 8kB, and this causes build errors on architectures like MIPS, which define _IOC_SIZEBITS=13. For avoiding this build errors but keeping the compatibility, manually expand with _IOC() instead of using _IOW() for the problematic ioctl. Signed-off-by: Takashi Iwai <tiwai@suse.de>
189 lines
5.9 KiB
C
189 lines
5.9 KiB
C
#ifndef __SOUND_SB16_CSP_H
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#define __SOUND_SB16_CSP_H
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/*
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* Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
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* Takashi Iwai <tiwai@suse.de>
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*
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* SB16ASP/AWE32 CSP control
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* CSP modes */
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#define SNDRV_SB_CSP_MODE_NONE 0x00
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#define SNDRV_SB_CSP_MODE_DSP_READ 0x01 /* Record from DSP */
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#define SNDRV_SB_CSP_MODE_DSP_WRITE 0x02 /* Play to DSP */
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#define SNDRV_SB_CSP_MODE_QSOUND 0x04 /* QSound */
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/* CSP load flags */
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#define SNDRV_SB_CSP_LOAD_FROMUSER 0x01
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#define SNDRV_SB_CSP_LOAD_INITBLOCK 0x02
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/* CSP sample width */
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#define SNDRV_SB_CSP_SAMPLE_8BIT 0x01
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#define SNDRV_SB_CSP_SAMPLE_16BIT 0x02
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/* CSP channels */
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#define SNDRV_SB_CSP_MONO 0x01
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#define SNDRV_SB_CSP_STEREO 0x02
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/* CSP rates */
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#define SNDRV_SB_CSP_RATE_8000 0x01
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#define SNDRV_SB_CSP_RATE_11025 0x02
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#define SNDRV_SB_CSP_RATE_22050 0x04
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#define SNDRV_SB_CSP_RATE_44100 0x08
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#define SNDRV_SB_CSP_RATE_ALL 0x0f
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/* CSP running state */
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#define SNDRV_SB_CSP_ST_IDLE 0x00
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#define SNDRV_SB_CSP_ST_LOADED 0x01
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#define SNDRV_SB_CSP_ST_RUNNING 0x02
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#define SNDRV_SB_CSP_ST_PAUSED 0x04
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#define SNDRV_SB_CSP_ST_AUTO 0x08
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#define SNDRV_SB_CSP_ST_QSOUND 0x10
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/* maximum QSound value (180 degrees right) */
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#define SNDRV_SB_CSP_QSOUND_MAX_RIGHT 0x20
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/* maximum microcode RIFF file size */
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#define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE 0x3000
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/* microcode header */
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struct snd_sb_csp_mc_header {
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char codec_name[16]; /* id name of codec */
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unsigned short func_req; /* requested function */
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};
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/* microcode to be loaded */
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struct snd_sb_csp_microcode {
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struct snd_sb_csp_mc_header info;
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unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE];
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};
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/* start CSP with sample_width in mono/stereo */
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struct snd_sb_csp_start {
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int sample_width; /* sample width, look above */
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int channels; /* channels, look above */
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};
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/* CSP information */
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struct snd_sb_csp_info {
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char codec_name[16]; /* id name of codec */
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unsigned short func_nr; /* function number */
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unsigned int acc_format; /* accepted PCM formats */
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unsigned short acc_channels; /* accepted channels */
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unsigned short acc_width; /* accepted sample width */
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unsigned short acc_rates; /* accepted sample rates */
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unsigned short csp_mode; /* CSP mode, see above */
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unsigned short run_channels; /* current channels */
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unsigned short run_width; /* current sample width */
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unsigned short version; /* version id: 0x10 - 0x1f */
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unsigned short state; /* state bits */
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};
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/* HWDEP controls */
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/* get CSP information */
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#define SNDRV_SB_CSP_IOCTL_INFO _IOR('H', 0x10, struct snd_sb_csp_info)
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/* load microcode to CSP */
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/* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits)
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* defined for some architectures like MIPS, and it leads to build errors.
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* (x86 and co have 14-bit size, thus it's valid, though.)
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* As a workaround for skipping the size-limit check, here we don't use the
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* normal _IOW() macro but _IOC() with the manual argument.
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*/
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#define SNDRV_SB_CSP_IOCTL_LOAD_CODE \
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_IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode))
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/* unload microcode from CSP */
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#define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE _IO('H', 0x12)
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/* start CSP */
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#define SNDRV_SB_CSP_IOCTL_START _IOW('H', 0x13, struct snd_sb_csp_start)
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/* stop CSP */
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#define SNDRV_SB_CSP_IOCTL_STOP _IO('H', 0x14)
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/* pause CSP and DMA transfer */
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#define SNDRV_SB_CSP_IOCTL_PAUSE _IO('H', 0x15)
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/* restart CSP and DMA transfer */
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#define SNDRV_SB_CSP_IOCTL_RESTART _IO('H', 0x16)
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#ifdef __KERNEL__
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#include "sb.h"
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#include "hwdep.h"
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#include <linux/firmware.h>
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struct snd_sb_csp;
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/* indices for the known CSP programs */
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enum {
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CSP_PROGRAM_MULAW,
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CSP_PROGRAM_ALAW,
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CSP_PROGRAM_ADPCM_INIT,
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CSP_PROGRAM_ADPCM_PLAYBACK,
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CSP_PROGRAM_ADPCM_CAPTURE,
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CSP_PROGRAM_COUNT
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};
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/*
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* CSP operators
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*/
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struct snd_sb_csp_ops {
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int (*csp_use) (struct snd_sb_csp * p);
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int (*csp_unuse) (struct snd_sb_csp * p);
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int (*csp_autoload) (struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
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int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
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int (*csp_stop) (struct snd_sb_csp * p);
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int (*csp_qsound_transfer) (struct snd_sb_csp * p);
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};
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/*
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* CSP private data
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*/
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struct snd_sb_csp {
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struct snd_sb *chip; /* SB16 DSP */
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int used; /* usage flag - exclusive */
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char codec_name[16]; /* name of codec */
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unsigned short func_nr; /* function number */
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unsigned int acc_format; /* accepted PCM formats */
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int acc_channels; /* accepted channels */
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int acc_width; /* accepted sample width */
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int acc_rates; /* accepted sample rates */
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int mode; /* MODE */
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int run_channels; /* current CSP channels */
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int run_width; /* current sample width */
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int version; /* CSP version (0x10 - 0x1f) */
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int running; /* running state */
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struct snd_sb_csp_ops ops; /* operators */
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spinlock_t q_lock; /* locking */
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int q_enabled; /* enabled flag */
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int qpos_left; /* left position */
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int qpos_right; /* right position */
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int qpos_changed; /* position changed flag */
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struct snd_kcontrol *qsound_switch;
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struct snd_kcontrol *qsound_space;
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struct mutex access_mutex; /* locking */
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const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
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};
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int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
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#endif
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#endif /* __SOUND_SB16_CSP */
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