sound/oss/ymfpci.h - kernel/msm - Gitiles

 #ifndef __YMFPCI_H
 #define __YMFPCI_H

 /*
  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
  *  Definitions for Yahama YMF724/740/744/754 chips
  *
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
  *   the Free Software Foundation; either version 2 of the License, or
  *   (at your option) any later version.
  *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *   GNU General Public License for more details.
  *
  *   You should have received a copy of the GNU General Public License
  *   along with this program; if not, write to the Free Software
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
  */
 #include <linux/config.h>
 #include <linux/mutex.h>

 /*
  *  Direct registers
  */

 /* #define YMFREG(codec, reg)		(codec->port + YDSXGR_##reg) */

 #define	YDSXGR_INTFLAG			0x0004
 #define	YDSXGR_ACTIVITY			0x0006
 #define	YDSXGR_GLOBALCTRL		0x0008
 #define	YDSXGR_ZVCTRL			0x000A
 #define	YDSXGR_TIMERCTRL		0x0010
 #define	YDSXGR_TIMERCTRL_TEN		 0x0001
 #define	YDSXGR_TIMERCTRL_TIEN		 0x0002
 #define	YDSXGR_TIMERCOUNT		0x0012
 #define	YDSXGR_SPDIFOUTCTRL		0x0018
 #define	YDSXGR_SPDIFOUTSTATUS		0x001C
 #define	YDSXGR_EEPROMCTRL		0x0020
 #define	YDSXGR_SPDIFINCTRL		0x0034
 #define	YDSXGR_SPDIFINSTATUS		0x0038
 #define	YDSXGR_DSPPROGRAMDL		0x0048
 #define	YDSXGR_DLCNTRL			0x004C
 #define	YDSXGR_GPIOININTFLAG		0x0050
 #define	YDSXGR_GPIOININTENABLE		0x0052
 #define	YDSXGR_GPIOINSTATUS		0x0054
 #define	YDSXGR_GPIOOUTCTRL		0x0056
 #define	YDSXGR_GPIOFUNCENABLE		0x0058
 #define	YDSXGR_GPIOTYPECONFIG		0x005A
 #define	YDSXGR_AC97CMDDATA		0x0060
 #define	YDSXGR_AC97CMDADR		0x0062
 #define	YDSXGR_PRISTATUSDATA		0x0064
 #define	YDSXGR_PRISTATUSADR		0x0066
 #define	YDSXGR_SECSTATUSDATA		0x0068
 #define	YDSXGR_SECSTATUSADR		0x006A
 #define	YDSXGR_SECCONFIG		0x0070
 #define	YDSXGR_LEGACYOUTVOL		0x0080
 #define	YDSXGR_LEGACYOUTVOLL		0x0080
 #define	YDSXGR_LEGACYOUTVOLR		0x0082
 #define	YDSXGR_NATIVEDACOUTVOL		0x0084
 #define	YDSXGR_NATIVEDACOUTVOLL		0x0084
 #define	YDSXGR_NATIVEDACOUTVOLR		0x0086
 #define	YDSXGR_SPDIFOUTVOL		0x0088
 #define	YDSXGR_SPDIFOUTVOLL		0x0088
 #define	YDSXGR_SPDIFOUTVOLR		0x008A
 #define	YDSXGR_AC3OUTVOL		0x008C
 #define	YDSXGR_AC3OUTVOLL		0x008C
 #define	YDSXGR_AC3OUTVOLR		0x008E
 #define	YDSXGR_PRIADCOUTVOL		0x0090
 #define	YDSXGR_PRIADCOUTVOLL		0x0090
 #define	YDSXGR_PRIADCOUTVOLR		0x0092
 #define	YDSXGR_LEGACYLOOPVOL		0x0094
 #define	YDSXGR_LEGACYLOOPVOLL		0x0094
 #define	YDSXGR_LEGACYLOOPVOLR		0x0096
 #define	YDSXGR_NATIVEDACLOOPVOL		0x0098
 #define	YDSXGR_NATIVEDACLOOPVOLL	0x0098
 #define	YDSXGR_NATIVEDACLOOPVOLR	0x009A
 #define	YDSXGR_SPDIFLOOPVOL		0x009C
 #define	YDSXGR_SPDIFLOOPVOLL		0x009E
 #define	YDSXGR_SPDIFLOOPVOLR		0x009E
 #define	YDSXGR_AC3LOOPVOL		0x00A0
 #define	YDSXGR_AC3LOOPVOLL		0x00A0
 #define	YDSXGR_AC3LOOPVOLR		0x00A2
 #define	YDSXGR_PRIADCLOOPVOL		0x00A4
 #define	YDSXGR_PRIADCLOOPVOLL		0x00A4
 #define	YDSXGR_PRIADCLOOPVOLR		0x00A6
 #define	YDSXGR_NATIVEADCINVOL		0x00A8
 #define	YDSXGR_NATIVEADCINVOLL		0x00A8
 #define	YDSXGR_NATIVEADCINVOLR		0x00AA
 #define	YDSXGR_NATIVEDACINVOL		0x00AC
 #define	YDSXGR_NATIVEDACINVOLL		0x00AC
 #define	YDSXGR_NATIVEDACINVOLR		0x00AE
 #define	YDSXGR_BUF441OUTVOL		0x00B0
 #define	YDSXGR_BUF441OUTVOLL		0x00B0
 #define	YDSXGR_BUF441OUTVOLR		0x00B2
 #define	YDSXGR_BUF441LOOPVOL		0x00B4
 #define	YDSXGR_BUF441LOOPVOLL		0x00B4
 #define	YDSXGR_BUF441LOOPVOLR		0x00B6
 #define	YDSXGR_SPDIFOUTVOL2		0x00B8
 #define	YDSXGR_SPDIFOUTVOL2L		0x00B8
 #define	YDSXGR_SPDIFOUTVOL2R		0x00BA
 #define	YDSXGR_SPDIFLOOPVOL2		0x00BC
 #define	YDSXGR_SPDIFLOOPVOL2L		0x00BC
 #define	YDSXGR_SPDIFLOOPVOL2R		0x00BE
 #define	YDSXGR_ADCSLOTSR		0x00C0
 #define	YDSXGR_RECSLOTSR		0x00C4
 #define	YDSXGR_ADCFORMAT		0x00C8
 #define	YDSXGR_RECFORMAT		0x00CC
 #define	YDSXGR_P44SLOTSR		0x00D0
 #define	YDSXGR_STATUS			0x0100
 #define	YDSXGR_CTRLSELECT		0x0104
 #define	YDSXGR_MODE			0x0108
 #define	YDSXGR_SAMPLECOUNT		0x010C
 #define	YDSXGR_NUMOFSAMPLES		0x0110
 #define	YDSXGR_CONFIG			0x0114
 #define	YDSXGR_PLAYCTRLSIZE		0x0140
 #define	YDSXGR_RECCTRLSIZE		0x0144
 #define	YDSXGR_EFFCTRLSIZE		0x0148
 #define	YDSXGR_WORKSIZE			0x014C
 #define	YDSXGR_MAPOFREC			0x0150
 #define	YDSXGR_MAPOFEFFECT		0x0154
 #define	YDSXGR_PLAYCTRLBASE		0x0158
 #define	YDSXGR_RECCTRLBASE		0x015C
 #define	YDSXGR_EFFCTRLBASE		0x0160
 #define	YDSXGR_WORKBASE			0x0164
 #define	YDSXGR_DSPINSTRAM		0x1000
 #define	YDSXGR_CTRLINSTRAM		0x4000

 #define YDSXG_AC97READCMD		0x8000
 #define YDSXG_AC97WRITECMD		0x0000

 #define PCIR_LEGCTRL			0x40
 #define PCIR_ELEGCTRL			0x42
 #define PCIR_DSXGCTRL			0x48
 #define PCIR_DSXPWRCTRL1		0x4a
 #define PCIR_DSXPWRCTRL2		0x4e
 #define PCIR_OPLADR			0x60
 #define PCIR_SBADR			0x62
 #define PCIR_MPUADR			0x64

 #define YDSXG_DSPLENGTH			0x0080
 #define YDSXG_CTRLLENGTH		0x3000

 #define YDSXG_DEFAULT_WORK_SIZE		0x0400

 #define YDSXG_PLAYBACK_VOICES		64
 #define YDSXG_CAPTURE_VOICES		2
 #define YDSXG_EFFECT_VOICES		5

 /* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
 #define NR_AC97		2

 #define YMF_SAMPF			256	/* Samples per frame @48000 */

 /*
  * The slot/voice control bank (2 of these per voice)
  */

 typedef struct stru_ymfpci_playback_bank {
 	u32 format;
 	u32 loop_default;
 	u32 base;			/* 32-bit address */
 	u32 loop_start;			/* 32-bit offset */
 	u32 loop_end;			/* 32-bit offset */
 	u32 loop_frac;			/* 8-bit fraction - loop_start */
 	u32 delta_end;			/* pitch delta end */
 	u32 lpfK_end;
 	u32 eg_gain_end;
 	u32 left_gain_end;
 	u32 right_gain_end;
 	u32 eff1_gain_end;
 	u32 eff2_gain_end;
 	u32 eff3_gain_end;
 	u32 lpfQ;
 	u32 status;		/* P3: Always 0 for some reason. */
 	u32 num_of_frames;
 	u32 loop_count;
 	u32 start;		/* P3: J. reads this to know where chip is. */
 	u32 start_frac;
 	u32 delta;
 	u32 lpfK;
 	u32 eg_gain;
 	u32 left_gain;
 	u32 right_gain;
 	u32 eff1_gain;
 	u32 eff2_gain;
 	u32 eff3_gain;
 	u32 lpfD1;
 	u32 lpfD2;
 } ymfpci_playback_bank_t;

 typedef struct stru_ymfpci_capture_bank {
 	u32 base;			/* 32-bit address (aligned at 4) */
 	u32 loop_end;			/* size in BYTES (aligned at 4) */
 	u32 start;			/* 32-bit offset */
 	u32 num_of_loops;		/* counter */
 } ymfpci_capture_bank_t;

 typedef struct stru_ymfpci_effect_bank {
 	u32 base;			/* 32-bit address */
 	u32 loop_end;			/* 32-bit offset */
 	u32 start;			/* 32-bit offset */
 	u32 temp;
 } ymfpci_effect_bank_t;

 typedef struct ymf_voice ymfpci_voice_t;
 /*
  * Throughout the code Yaroslav names YMF unit pointer "codec"
  * even though it does not correspond to any codec. Must be historic.
  * We replace it with "unit" over time.
  * AC97 parts use "codec" to denote a codec, naturally.
  */
 typedef struct ymf_unit ymfpci_t;

 typedef enum {
 	YMFPCI_PCM,
 	YMFPCI_SYNTH,
 	YMFPCI_MIDI
 } ymfpci_voice_type_t;

 struct ymf_voice {
 	// ymfpci_t *codec;
 	int number;
 	char use, pcm, synth, midi;	// bool
 	ymfpci_playback_bank_t *bank;
 	struct ymf_pcm *ypcm;
 	dma_addr_t bank_ba;
 };

 struct ymf_capture {
 	// struct ymf_unit *unit;
 	int use;
 	ymfpci_capture_bank_t *bank;
 	struct ymf_pcm *ypcm;
 };

 struct ymf_unit {
 	u8 rev;				/* PCI revision */
 	void __iomem *reg_area_virt;
 	void *dma_area_va;
 	dma_addr_t dma_area_ba;
 	unsigned int dma_area_size;

 	dma_addr_t bank_base_capture;
 	dma_addr_t bank_base_effect;
 	dma_addr_t work_base;
 	unsigned int work_size;

 	u32 *ctrl_playback;
 	dma_addr_t ctrl_playback_ba;
 	ymfpci_playback_bank_t *bank_playback[YDSXG_PLAYBACK_VOICES][2];
 	ymfpci_capture_bank_t *bank_capture[YDSXG_CAPTURE_VOICES][2];
 	ymfpci_effect_bank_t *bank_effect[YDSXG_EFFECT_VOICES][2];

 	int start_count;
 	int suspended;

 	u32 active_bank;
 	struct ymf_voice voices[YDSXG_PLAYBACK_VOICES];
 	struct ymf_capture capture[YDSXG_CAPTURE_VOICES];

 	struct ac97_codec *ac97_codec[NR_AC97];
 	u16 ac97_features;

 	struct pci_dev *pci;

 #ifdef CONFIG_SOUND_YMFPCI_LEGACY
 	/* legacy hardware resources */
 	unsigned int iosynth, iomidi;
 	struct address_info opl3_data, mpu_data;
 #endif

 	spinlock_t reg_lock;
 	spinlock_t voice_lock;
 	spinlock_t ac97_lock;

 	/* soundcore stuff */
 	int dev_audio;
 	struct mutex open_mutex;

 	struct list_head ymf_devs;
 	struct list_head states;	/* List of states for this unit */
 };

 struct ymf_dmabuf {
 	dma_addr_t dma_addr;
 	void *rawbuf;
 	unsigned buforder;

 	/* OSS buffer management stuff */
 	unsigned numfrag;
 	unsigned fragshift;

 	/* our buffer acts like a circular ring */
 	unsigned hwptr;		/* where dma last started */
 	unsigned swptr;		/* where driver last clear/filled */
 	int count;		/* fill count */
 	unsigned total_bytes;	/* total bytes dmaed by hardware */

 	wait_queue_head_t wait;	/* put process on wait queue when no more space in buffer */

 	/* redundant, but makes calculations easier */
 	unsigned fragsize;
 	unsigned dmasize;	/* Total rawbuf[] size */

 	/* OSS stuff */
 	unsigned mapped:1;
 	unsigned ready:1;
 	unsigned ossfragshift;
 	int ossmaxfrags;
 	unsigned subdivision;
 };

 struct ymf_pcm_format {
 	int format;			/* OSS format */
 	int rate;			/* rate in Hz */
 	int voices;			/* number of voices */
 	int shift;			/* redundant, computed from the above */
 };

 typedef enum {
 	PLAYBACK_VOICE,
 	CAPTURE_REC,
 	CAPTURE_AC97,
 	EFFECT_DRY_LEFT,
 	EFFECT_DRY_RIGHT,
 	EFFECT_EFF1,
 	EFFECT_EFF2,
 	EFFECT_EFF3
 } ymfpci_pcm_type_t;

 /* This is variant record, but we hate unions. Little waste on pointers []. */
 struct ymf_pcm {
 	ymfpci_pcm_type_t type;
 	struct ymf_state *state;

 	ymfpci_voice_t *voices[2];
 	int capture_bank_number;

 	struct ymf_dmabuf dmabuf;
 	int running;
 	int spdif;
 };

 /*
  * "Software" or virtual channel, an instance of opened /dev/dsp.
  * It may have two physical channels (pcms) for duplex operations.
  */

 struct ymf_state {
 	struct list_head chain;
 	struct ymf_unit *unit;			/* backpointer */
 	struct ymf_pcm rpcm, wpcm;
 	struct ymf_pcm_format format;
 };

 #endif				/* __YMFPCI_H */
	#ifndef __YMFPCI_H
	#define __YMFPCI_H

	/*
	* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
	* Definitions for Yahama YMF724/740/744/754 chips
	*
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*
	*/
	#include <linux/config.h>
	#include <linux/mutex.h>

	/*
	* Direct registers
	*/

	/* #define YMFREG(codec, reg) (codec->port + YDSXGR_##reg) */

	#define YDSXGR_INTFLAG 0x0004
	#define YDSXGR_ACTIVITY 0x0006
	#define YDSXGR_GLOBALCTRL 0x0008
	#define YDSXGR_ZVCTRL 0x000A
	#define YDSXGR_TIMERCTRL 0x0010
	#define YDSXGR_TIMERCTRL_TEN 0x0001
	#define YDSXGR_TIMERCTRL_TIEN 0x0002
	#define YDSXGR_TIMERCOUNT 0x0012
	#define YDSXGR_SPDIFOUTCTRL 0x0018
	#define YDSXGR_SPDIFOUTSTATUS 0x001C
	#define YDSXGR_EEPROMCTRL 0x0020
	#define YDSXGR_SPDIFINCTRL 0x0034
	#define YDSXGR_SPDIFINSTATUS 0x0038
	#define YDSXGR_DSPPROGRAMDL 0x0048
	#define YDSXGR_DLCNTRL 0x004C
	#define YDSXGR_GPIOININTFLAG 0x0050
	#define YDSXGR_GPIOININTENABLE 0x0052
	#define YDSXGR_GPIOINSTATUS 0x0054
	#define YDSXGR_GPIOOUTCTRL 0x0056
	#define YDSXGR_GPIOFUNCENABLE 0x0058
	#define YDSXGR_GPIOTYPECONFIG 0x005A
	#define YDSXGR_AC97CMDDATA 0x0060
	#define YDSXGR_AC97CMDADR 0x0062
	#define YDSXGR_PRISTATUSDATA 0x0064
	#define YDSXGR_PRISTATUSADR 0x0066
	#define YDSXGR_SECSTATUSDATA 0x0068
	#define YDSXGR_SECSTATUSADR 0x006A
	#define YDSXGR_SECCONFIG 0x0070
	#define YDSXGR_LEGACYOUTVOL 0x0080
	#define YDSXGR_LEGACYOUTVOLL 0x0080
	#define YDSXGR_LEGACYOUTVOLR 0x0082
	#define YDSXGR_NATIVEDACOUTVOL 0x0084
	#define YDSXGR_NATIVEDACOUTVOLL 0x0084
	#define YDSXGR_NATIVEDACOUTVOLR 0x0086
	#define YDSXGR_SPDIFOUTVOL 0x0088
	#define YDSXGR_SPDIFOUTVOLL 0x0088
	#define YDSXGR_SPDIFOUTVOLR 0x008A
	#define YDSXGR_AC3OUTVOL 0x008C
	#define YDSXGR_AC3OUTVOLL 0x008C
	#define YDSXGR_AC3OUTVOLR 0x008E
	#define YDSXGR_PRIADCOUTVOL 0x0090
	#define YDSXGR_PRIADCOUTVOLL 0x0090
	#define YDSXGR_PRIADCOUTVOLR 0x0092
	#define YDSXGR_LEGACYLOOPVOL 0x0094
	#define YDSXGR_LEGACYLOOPVOLL 0x0094
	#define YDSXGR_LEGACYLOOPVOLR 0x0096
	#define YDSXGR_NATIVEDACLOOPVOL 0x0098
	#define YDSXGR_NATIVEDACLOOPVOLL 0x0098
	#define YDSXGR_NATIVEDACLOOPVOLR 0x009A
	#define YDSXGR_SPDIFLOOPVOL 0x009C
	#define YDSXGR_SPDIFLOOPVOLL 0x009E
	#define YDSXGR_SPDIFLOOPVOLR 0x009E
	#define YDSXGR_AC3LOOPVOL 0x00A0
	#define YDSXGR_AC3LOOPVOLL 0x00A0
	#define YDSXGR_AC3LOOPVOLR 0x00A2
	#define YDSXGR_PRIADCLOOPVOL 0x00A4
	#define YDSXGR_PRIADCLOOPVOLL 0x00A4
	#define YDSXGR_PRIADCLOOPVOLR 0x00A6
	#define YDSXGR_NATIVEADCINVOL 0x00A8
	#define YDSXGR_NATIVEADCINVOLL 0x00A8
	#define YDSXGR_NATIVEADCINVOLR 0x00AA
	#define YDSXGR_NATIVEDACINVOL 0x00AC
	#define YDSXGR_NATIVEDACINVOLL 0x00AC
	#define YDSXGR_NATIVEDACINVOLR 0x00AE
	#define YDSXGR_BUF441OUTVOL 0x00B0
	#define YDSXGR_BUF441OUTVOLL 0x00B0
	#define YDSXGR_BUF441OUTVOLR 0x00B2
	#define YDSXGR_BUF441LOOPVOL 0x00B4
	#define YDSXGR_BUF441LOOPVOLL 0x00B4
	#define YDSXGR_BUF441LOOPVOLR 0x00B6
	#define YDSXGR_SPDIFOUTVOL2 0x00B8
	#define YDSXGR_SPDIFOUTVOL2L 0x00B8
	#define YDSXGR_SPDIFOUTVOL2R 0x00BA
	#define YDSXGR_SPDIFLOOPVOL2 0x00BC
	#define YDSXGR_SPDIFLOOPVOL2L 0x00BC
	#define YDSXGR_SPDIFLOOPVOL2R 0x00BE
	#define YDSXGR_ADCSLOTSR 0x00C0
	#define YDSXGR_RECSLOTSR 0x00C4
	#define YDSXGR_ADCFORMAT 0x00C8
	#define YDSXGR_RECFORMAT 0x00CC
	#define YDSXGR_P44SLOTSR 0x00D0
	#define YDSXGR_STATUS 0x0100
	#define YDSXGR_CTRLSELECT 0x0104
	#define YDSXGR_MODE 0x0108
	#define YDSXGR_SAMPLECOUNT 0x010C
	#define YDSXGR_NUMOFSAMPLES 0x0110
	#define YDSXGR_CONFIG 0x0114
	#define YDSXGR_PLAYCTRLSIZE 0x0140
	#define YDSXGR_RECCTRLSIZE 0x0144
	#define YDSXGR_EFFCTRLSIZE 0x0148
	#define YDSXGR_WORKSIZE 0x014C
	#define YDSXGR_MAPOFREC 0x0150
	#define YDSXGR_MAPOFEFFECT 0x0154
	#define YDSXGR_PLAYCTRLBASE 0x0158
	#define YDSXGR_RECCTRLBASE 0x015C
	#define YDSXGR_EFFCTRLBASE 0x0160
	#define YDSXGR_WORKBASE 0x0164
	#define YDSXGR_DSPINSTRAM 0x1000
	#define YDSXGR_CTRLINSTRAM 0x4000

	#define YDSXG_AC97READCMD 0x8000
	#define YDSXG_AC97WRITECMD 0x0000

	#define PCIR_LEGCTRL 0x40
	#define PCIR_ELEGCTRL 0x42
	#define PCIR_DSXGCTRL 0x48
	#define PCIR_DSXPWRCTRL1 0x4a
	#define PCIR_DSXPWRCTRL2 0x4e
	#define PCIR_OPLADR 0x60
	#define PCIR_SBADR 0x62
	#define PCIR_MPUADR 0x64

	#define YDSXG_DSPLENGTH 0x0080
	#define YDSXG_CTRLLENGTH 0x3000

	#define YDSXG_DEFAULT_WORK_SIZE 0x0400

	#define YDSXG_PLAYBACK_VOICES 64
	#define YDSXG_CAPTURE_VOICES 2
	#define YDSXG_EFFECT_VOICES 5

	/* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
	#define NR_AC97 2

	#define YMF_SAMPF 256 /* Samples per frame @48000 */

	/*
	* The slot/voice control bank (2 of these per voice)
	*/

	typedef struct stru_ymfpci_playback_bank {
	u32 format;
	u32 loop_default;
	u32 base; /* 32-bit address */
	u32 loop_start; /* 32-bit offset */
	u32 loop_end; /* 32-bit offset */
	u32 loop_frac; /* 8-bit fraction - loop_start */
	u32 delta_end; /* pitch delta end */
	u32 lpfK_end;
	u32 eg_gain_end;
	u32 left_gain_end;
	u32 right_gain_end;
	u32 eff1_gain_end;
	u32 eff2_gain_end;
	u32 eff3_gain_end;
	u32 lpfQ;
	u32 status; /* P3: Always 0 for some reason. */
	u32 num_of_frames;
	u32 loop_count;
	u32 start; /* P3: J. reads this to know where chip is. */
	u32 start_frac;
	u32 delta;
	u32 lpfK;
	u32 eg_gain;
	u32 left_gain;
	u32 right_gain;
	u32 eff1_gain;
	u32 eff2_gain;
	u32 eff3_gain;
	u32 lpfD1;
	u32 lpfD2;
	} ymfpci_playback_bank_t;

	typedef struct stru_ymfpci_capture_bank {
	u32 base; /* 32-bit address (aligned at 4) */
	u32 loop_end; /* size in BYTES (aligned at 4) */
	u32 start; /* 32-bit offset */
	u32 num_of_loops; /* counter */
	} ymfpci_capture_bank_t;

	typedef struct stru_ymfpci_effect_bank {
	u32 base; /* 32-bit address */
	u32 loop_end; /* 32-bit offset */
	u32 start; /* 32-bit offset */
	u32 temp;
	} ymfpci_effect_bank_t;

	typedef struct ymf_voice ymfpci_voice_t;
	/*
	* Throughout the code Yaroslav names YMF unit pointer "codec"
	* even though it does not correspond to any codec. Must be historic.
	* We replace it with "unit" over time.
	* AC97 parts use "codec" to denote a codec, naturally.
	*/
	typedef struct ymf_unit ymfpci_t;

	typedef enum {
	YMFPCI_PCM,
	YMFPCI_SYNTH,
	YMFPCI_MIDI
	} ymfpci_voice_type_t;

	struct ymf_voice {
	// ymfpci_t *codec;
	int number;
	char use, pcm, synth, midi; // bool
	ymfpci_playback_bank_t *bank;
	struct ymf_pcm *ypcm;
	dma_addr_t bank_ba;
	};

	struct ymf_capture {
	// struct ymf_unit *unit;
	int use;
	ymfpci_capture_bank_t *bank;
	struct ymf_pcm *ypcm;
	};

	struct ymf_unit {
	u8 rev; /* PCI revision */
	void __iomem *reg_area_virt;
	void *dma_area_va;
	dma_addr_t dma_area_ba;
	unsigned int dma_area_size;

	dma_addr_t bank_base_capture;
	dma_addr_t bank_base_effect;
	dma_addr_t work_base;
	unsigned int work_size;

	u32 *ctrl_playback;
	dma_addr_t ctrl_playback_ba;
	ymfpci_playback_bank_t *bank_playback[YDSXG_PLAYBACK_VOICES][2];
	ymfpci_capture_bank_t *bank_capture[YDSXG_CAPTURE_VOICES][2];
	ymfpci_effect_bank_t *bank_effect[YDSXG_EFFECT_VOICES][2];

	int start_count;
	int suspended;

	u32 active_bank;
	struct ymf_voice voices[YDSXG_PLAYBACK_VOICES];
	struct ymf_capture capture[YDSXG_CAPTURE_VOICES];

	struct ac97_codec *ac97_codec[NR_AC97];
	u16 ac97_features;

	struct pci_dev *pci;

	#ifdef CONFIG_SOUND_YMFPCI_LEGACY
	/* legacy hardware resources */
	unsigned int iosynth, iomidi;
	struct address_info opl3_data, mpu_data;
	#endif

	spinlock_t reg_lock;
	spinlock_t voice_lock;
	spinlock_t ac97_lock;

	/* soundcore stuff */
	int dev_audio;
	struct mutex open_mutex;

	struct list_head ymf_devs;
	struct list_head states; /* List of states for this unit */
	};

	struct ymf_dmabuf {
	dma_addr_t dma_addr;
	void *rawbuf;
	unsigned buforder;

	/* OSS buffer management stuff */
	unsigned numfrag;
	unsigned fragshift;

	/* our buffer acts like a circular ring */
	unsigned hwptr; /* where dma last started */
	unsigned swptr; /* where driver last clear/filled */
	int count; /* fill count */
	unsigned total_bytes; /* total bytes dmaed by hardware */

	wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */

	/* redundant, but makes calculations easier */
	unsigned fragsize;
	unsigned dmasize; /* Total rawbuf[] size */

	/* OSS stuff */
	unsigned mapped:1;
	unsigned ready:1;
	unsigned ossfragshift;
	int ossmaxfrags;
	unsigned subdivision;
	};

	struct ymf_pcm_format {
	int format; /* OSS format */
	int rate; /* rate in Hz */
	int voices; /* number of voices */
	int shift; /* redundant, computed from the above */
	};

	typedef enum {
	PLAYBACK_VOICE,
	CAPTURE_REC,
	CAPTURE_AC97,
	EFFECT_DRY_LEFT,
	EFFECT_DRY_RIGHT,
	EFFECT_EFF1,
	EFFECT_EFF2,
	EFFECT_EFF3
	} ymfpci_pcm_type_t;

	/* This is variant record, but we hate unions. Little waste on pointers []. */
	struct ymf_pcm {
	ymfpci_pcm_type_t type;
	struct ymf_state *state;

	ymfpci_voice_t *voices[2];
	int capture_bank_number;

	struct ymf_dmabuf dmabuf;
	int running;
	int spdif;
	};

	/*
	* "Software" or virtual channel, an instance of opened /dev/dsp.
	* It may have two physical channels (pcms) for duplex operations.
	*/

	struct ymf_state {
	struct list_head chain;
	struct ymf_unit unit; / backpointer */
	struct ymf_pcm rpcm, wpcm;
	struct ymf_pcm_format format;
	};

	#endif /* __YMFPCI_H */