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Current File : /lib/modules/5.15.0-1084-aws/build/arch/m68k/include/asm/atarihw.h
/*
** linux/atarihw.h -- This header defines some macros and pointers for
**                    the various Atari custom hardware registers.
**
** Copyright 1994 by Björn Brauel
**
** 5/1/94 Roman Hodek:
**   Added definitions for TT specific chips.
**
** 1996-09-13 lars brinkhoff <f93labr@dd.chalmers.se>:
**   Finally added definitions for the matrix/codec and the DSP56001 host
**   interface.
**
** 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.
**
*/

#ifndef _LINUX_ATARIHW_H_
#define _LINUX_ATARIHW_H_

#include <linux/types.h>
#include <asm/bootinfo-atari.h>
#include <asm/kmap.h>

extern u_long atari_mch_cookie;
extern u_long atari_mch_type;
extern u_long atari_switches;
extern int atari_rtc_year_offset;
extern int atari_dont_touch_floppy_select;

extern int atari_SCC_reset_done;

extern ssize_t atari_nvram_read(char *, size_t, loff_t *);
extern ssize_t atari_nvram_write(char *, size_t, loff_t *);
extern ssize_t atari_nvram_get_size(void);
extern long atari_nvram_set_checksum(void);
extern long atari_nvram_initialize(void);

/* convenience macros for testing machine type */
#define MACH_IS_ST	((atari_mch_cookie >> 16) == ATARI_MCH_ST)
#define MACH_IS_STE	((atari_mch_cookie >> 16) == ATARI_MCH_STE && \
			 (atari_mch_cookie & 0xffff) == 0)
#define MACH_IS_MSTE	((atari_mch_cookie >> 16) == ATARI_MCH_STE && \
			 (atari_mch_cookie & 0xffff) == 0x10)
#define MACH_IS_TT	((atari_mch_cookie >> 16) == ATARI_MCH_TT)
#define MACH_IS_FALCON	((atari_mch_cookie >> 16) == ATARI_MCH_FALCON)
#define MACH_IS_MEDUSA	(atari_mch_type == ATARI_MACH_MEDUSA)
#define MACH_IS_AB40	(atari_mch_type == ATARI_MACH_AB40)

/* values for atari_switches */
#define ATARI_SWITCH_IKBD	0x01
#define ATARI_SWITCH_MIDI	0x02
#define ATARI_SWITCH_SND6	0x04
#define ATARI_SWITCH_SND7	0x08
#define ATARI_SWITCH_OVSC_SHIFT	16
#define ATARI_SWITCH_OVSC_IKBD	(ATARI_SWITCH_IKBD << ATARI_SWITCH_OVSC_SHIFT)
#define ATARI_SWITCH_OVSC_MIDI	(ATARI_SWITCH_MIDI << ATARI_SWITCH_OVSC_SHIFT)
#define ATARI_SWITCH_OVSC_SND6	(ATARI_SWITCH_SND6 << ATARI_SWITCH_OVSC_SHIFT)
#define ATARI_SWITCH_OVSC_SND7	(ATARI_SWITCH_SND7 << ATARI_SWITCH_OVSC_SHIFT)
#define ATARI_SWITCH_OVSC_MASK	0xffff0000

/*
 * Define several Hardware-Chips for indication so that for the ATARI we do
 * no longer decide whether it is a Falcon or other machine . It's just
 * important what hardware the machine uses
 */

/* ++roman 08/08/95: rewritten from ORing constants to a C bitfield */

#define ATARIHW_DECLARE(name)	unsigned name : 1
#define ATARIHW_SET(name)	(atari_hw_present.name = 1)
#define ATARIHW_PRESENT(name)	(atari_hw_present.name)

struct atari_hw_present {
    /* video hardware */
    ATARIHW_DECLARE(STND_SHIFTER);	/* ST-Shifter - no base low ! */
    ATARIHW_DECLARE(EXTD_SHIFTER);	/* STe-Shifter - 24 bit address */
    ATARIHW_DECLARE(TT_SHIFTER);	/* TT-Shifter */
    ATARIHW_DECLARE(VIDEL_SHIFTER);	/* Falcon-Shifter */
    /* sound hardware */
    ATARIHW_DECLARE(YM_2149);		/* Yamaha YM 2149 */
    ATARIHW_DECLARE(PCM_8BIT);		/* PCM-Sound in STe-ATARI */
    ATARIHW_DECLARE(CODEC);		/* CODEC Sound (Falcon) */
    /* disk storage interfaces */
    ATARIHW_DECLARE(TT_SCSI);		/* Directly mapped NCR5380 */
    ATARIHW_DECLARE(ST_SCSI);		/* NCR5380 via ST-DMA (Falcon) */
    ATARIHW_DECLARE(ACSI);		/* Standard ACSI like in STs */
    ATARIHW_DECLARE(IDE);		/* IDE Interface */
    ATARIHW_DECLARE(FDCSPEED);		/* 8/16 MHz switch for FDC */
    /* other I/O hardware */
    ATARIHW_DECLARE(ST_MFP);		/* The ST-MFP (there should be no Atari
					   without it... but who knows?) */
    ATARIHW_DECLARE(TT_MFP);		/* 2nd MFP */
    ATARIHW_DECLARE(SCC);		/* Serial Communications Contr. */
    ATARIHW_DECLARE(ST_ESCC);		/* SCC Z83230 in an ST */
    ATARIHW_DECLARE(ANALOG_JOY);	/* Paddle Interface for STe
					   and Falcon */
    ATARIHW_DECLARE(MICROWIRE);		/* Microwire Interface */
    /* DMA */
    ATARIHW_DECLARE(STND_DMA);		/* 24 Bit limited ST-DMA */
    ATARIHW_DECLARE(EXTD_DMA);		/* 32 Bit ST-DMA */
    ATARIHW_DECLARE(SCSI_DMA);		/* DMA for the NCR5380 */
    ATARIHW_DECLARE(SCC_DMA);		/* DMA for the SCC */
    /* real time clocks */
    ATARIHW_DECLARE(TT_CLK);		/* TT compatible clock chip */
    ATARIHW_DECLARE(MSTE_CLK);		/* Mega ST(E) clock chip */
    /* supporting hardware */
    ATARIHW_DECLARE(SCU);		/* System Control Unit */
    ATARIHW_DECLARE(BLITTER);		/* Blitter */
    ATARIHW_DECLARE(VME);		/* VME Bus */
    ATARIHW_DECLARE(DSP56K);		/* DSP56k processor in Falcon */
};

extern struct atari_hw_present atari_hw_present;


/* Reading the MFP port register gives a machine independent delay, since the
 * MFP always has a 8 MHz clock. This avoids problems with the varying length
 * of nops on various machines. Somebody claimed that the tstb takes 600 ns.
 */
#define	MFPDELAY() \
	__asm__ __volatile__ ( "tstb %0" : : "m" (st_mfp.par_dt_reg) : "cc" );

/* Do cache push/invalidate for DMA read/write. This function obeys the
 * snooping on some machines (Medusa) and processors: The Medusa itself can
 * snoop, but only the '040 can source data from its cache to DMA writes i.e.,
 * reads from memory). Both '040 and '060 invalidate cache entries on snooped
 * DMA reads (i.e., writes to memory).
 */


#include <linux/mm.h>
#include <asm/cacheflush.h>

static inline void dma_cache_maintenance( unsigned long paddr,
					  unsigned long len,
					  int writeflag )

{
	if (writeflag) {
		if (!MACH_IS_MEDUSA || CPU_IS_060)
			cache_push( paddr, len );
	}
	else {
		if (!MACH_IS_MEDUSA)
			cache_clear( paddr, len );
	}
}


/*
** Shifter
 */
#define ST_LOW  0
#define ST_MID  1
#define ST_HIGH 2
#define TT_LOW  7
#define TT_MID  4
#define TT_HIGH 6

#define SHF_BAS (0xffff8200)
struct SHIFTER_ST
 {
	u_char pad1;
	u_char bas_hi;
	u_char pad2;
	u_char bas_md;
	u_char pad3;
	u_char volatile vcounthi;
	u_char pad4;
	u_char volatile vcountmid;
	u_char pad5;
	u_char volatile vcountlow;
	u_char volatile syncmode;
	u_char pad6;
	u_char pad7;
	u_char bas_lo;
 };
# define shifter_st ((*(volatile struct SHIFTER_ST *)SHF_BAS))

#define SHF_FBAS (0xffff820e)
struct SHIFTER_F030
 {
  u_short off_next;
  u_short scn_width;
 };
# define shifter_f030 ((*(volatile struct SHIFTER_F030 *)SHF_FBAS))


#define	SHF_TBAS (0xffff8200)
struct SHIFTER_TT {
	u_char	char_dummy0;
	u_char	bas_hi;			/* video mem base addr, high and mid byte */
	u_char	char_dummy1;
	u_char	bas_md;
	u_char	char_dummy2;
	u_char	vcount_hi;		/* pointer to currently displayed byte */
	u_char	char_dummy3;
	u_char	vcount_md;
	u_char	char_dummy4;
	u_char	vcount_lo;
	u_short	st_sync;		/* ST compatible sync mode register, unused */
	u_char	char_dummy5;
	u_char	bas_lo;			/* video mem addr, low byte */
	u_char	char_dummy6[2+3*16];
	/* $ffff8240: */
	u_short	color_reg[16];	/* 16 color registers */
	u_char	st_shiftmode;	/* ST compatible shift mode register, unused */
	u_char  char_dummy7;
	u_short tt_shiftmode;	/* TT shift mode register */


};
#define	shifter_tt	((*(volatile struct SHIFTER_TT *)SHF_TBAS))

/* values for shifter_tt->tt_shiftmode */
#define	TT_SHIFTER_STLOW		0x0000
#define	TT_SHIFTER_STMID		0x0100
#define	TT_SHIFTER_STHIGH		0x0200
#define	TT_SHIFTER_TTLOW		0x0700
#define	TT_SHIFTER_TTMID		0x0400
#define	TT_SHIFTER_TTHIGH		0x0600
#define	TT_SHIFTER_MODEMASK	0x0700
#define TT_SHIFTER_NUMMODE	0x0008
#define	TT_SHIFTER_PALETTE_MASK	0x000f
#define	TT_SHIFTER_GRAYMODE		0x1000

/* 256 TT palette registers */
#define	TT_PALETTE_BASE	(0xffff8400)
#define	tt_palette	((volatile u_short *)TT_PALETTE_BASE)

#define	TT_PALETTE_RED_MASK		0x0f00
#define	TT_PALETTE_GREEN_MASK	0x00f0
#define	TT_PALETTE_BLUE_MASK	0x000f

/*
** Falcon030 VIDEL Video Controller
** for description see File 'linux\tools\atari\hardware.txt
 */
#define f030_col ((u_long *)		0xffff9800)
#define f030_xreg ((u_short*)		0xffff8282)
#define f030_yreg ((u_short*)		0xffff82a2)
#define f030_creg ((u_short*)		0xffff82c0)
#define f030_sreg ((u_short*)		0xffff8260)
#define f030_mreg ((u_short*)		0xffff820a)
#define f030_linewidth ((u_short*)      0xffff820e)
#define f030_hscroll ((u_char*)		0xffff8265)

#define VIDEL_BAS (0xffff8260)
struct VIDEL {
	u_short st_shift;
	u_short pad1;
	u_char  xoffset_s;
	u_char  xoffset;
	u_short f_shift;
	u_char  pad2[0x1a];
	u_short hht;
	u_short hbb;
	u_short hbe;
	u_short hdb;
	u_short hde;
	u_short hss;
	u_char  pad3[0x14];
	u_short vft;
	u_short vbb;
	u_short vbe;
	u_short vdb;
	u_short vde;
	u_short vss;
	u_char  pad4[0x12];
	u_short control;
	u_short mode;
};
#define	videl	((*(volatile struct VIDEL *)VIDEL_BAS))

/*
** DMA/WD1772 Disk Controller
 */

#define FWD_BAS (0xffff8604)
struct DMA_WD
 {
  u_short fdc_acces_seccount;
  u_short dma_mode_status;
  u_char dma_vhi;	/* Some extended ST-DMAs can handle 32 bit addresses */
  u_char dma_hi;
  u_char char_dummy2;
  u_char dma_md;
  u_char char_dummy3;
  u_char dma_lo;
  u_short fdc_speed;
 };
# define dma_wd ((*(volatile struct DMA_WD *)FWD_BAS))
/* alias */
#define	st_dma dma_wd
/* The two highest bytes of an extended DMA as a short; this is a must
 * for the Medusa.
 */
#define st_dma_ext_dmahi (*((volatile unsigned short *)0xffff8608))

/*
** YM2149 Sound Chip
** access in bytes
 */

#define YM_BAS (0xffff8800)
struct SOUND_YM
 {
  u_char rd_data_reg_sel;
  u_char char_dummy1;
  u_char wd_data;
 };
#define sound_ym ((*(volatile struct SOUND_YM *)YM_BAS))

/* TT SCSI DMA */

#define	TT_SCSI_DMA_BAS	(0xffff8700)
struct TT_DMA {
	u_char	char_dummy0;
	u_char	dma_addr_hi;
	u_char	char_dummy1;
	u_char	dma_addr_hmd;
	u_char	char_dummy2;
	u_char	dma_addr_lmd;
	u_char	char_dummy3;
	u_char	dma_addr_lo;
	u_char	char_dummy4;
	u_char	dma_cnt_hi;
	u_char	char_dummy5;
	u_char	dma_cnt_hmd;
	u_char	char_dummy6;
	u_char	dma_cnt_lmd;
	u_char	char_dummy7;
	u_char	dma_cnt_lo;
	u_long	dma_restdata;
	u_short	dma_ctrl;
};
#define	tt_scsi_dma	((*(volatile struct TT_DMA *)TT_SCSI_DMA_BAS))

/* TT SCSI Controller 5380 */

#define	TT_5380_BAS	(0xffff8781)
struct TT_5380 {
	u_char	scsi_data;
	u_char	char_dummy1;
	u_char	scsi_icr;
	u_char	char_dummy2;
	u_char	scsi_mode;
	u_char	char_dummy3;
	u_char	scsi_tcr;
	u_char	char_dummy4;
	u_char	scsi_idstat;
	u_char	char_dummy5;
	u_char	scsi_dmastat;
	u_char	char_dummy6;
	u_char	scsi_targrcv;
	u_char	char_dummy7;
	u_char	scsi_inircv;
};
#define	tt_scsi			((*(volatile struct TT_5380 *)TT_5380_BAS))
#define	tt_scsi_regp	((volatile char *)TT_5380_BAS)


/*
** Falcon DMA Sound Subsystem
 */

#define MATRIX_BASE (0xffff8930)
struct MATRIX
{
  u_short source;
  u_short destination;
  u_char external_frequency_divider;
  u_char internal_frequency_divider;
};
#define falcon_matrix (*(volatile struct MATRIX *)MATRIX_BASE)

#define CODEC_BASE (0xffff8936)
struct CODEC
{
  u_char tracks;
  u_char input_source;
#define CODEC_SOURCE_ADC        1
#define CODEC_SOURCE_MATRIX     2
  u_char adc_source;
#define ADC_SOURCE_RIGHT_PSG    1
#define ADC_SOURCE_LEFT_PSG     2
  u_char gain;
#define CODEC_GAIN_RIGHT        0x0f
#define CODEC_GAIN_LEFT         0xf0
  u_char attenuation;
#define CODEC_ATTENUATION_RIGHT 0x0f
#define CODEC_ATTENUATION_LEFT  0xf0
  u_char unused1;
  u_char status;
#define CODEC_OVERFLOW_RIGHT    1
#define CODEC_OVERFLOW_LEFT     2
  u_char unused2, unused3, unused4, unused5;
  u_char gpio_directions;
#define CODEC_GPIO_IN           0
#define CODEC_GPIO_OUT          1
  u_char unused6;
  u_char gpio_data;
};
#define falcon_codec (*(volatile struct CODEC *)CODEC_BASE)

/*
** Falcon Blitter
*/

#define BLT_BAS (0xffff8a00)

struct BLITTER
 {
  u_short halftone[16];
  u_short src_x_inc;
  u_short src_y_inc;
  u_long src_address;
  u_short endmask1;
  u_short endmask2;
  u_short endmask3;
  u_short dst_x_inc;
  u_short dst_y_inc;
  u_long dst_address;
  u_short wd_per_line;
  u_short ln_per_bb;
  u_short hlf_op_reg;
  u_short log_op_reg;
  u_short lin_nm_reg;
  u_short skew_reg;
 };
# define blitter ((*(volatile struct BLITTER *)BLT_BAS))


/*
** SCC Z8530
 */

#define SCC_BAS (0xffff8c81)
struct SCC
 {
  u_char cha_a_ctrl;
  u_char char_dummy1;
  u_char cha_a_data;
  u_char char_dummy2;
  u_char cha_b_ctrl;
  u_char char_dummy3;
  u_char cha_b_data;
 };
# define atari_scc ((*(volatile struct SCC*)SCC_BAS))

/* The ESCC (Z85230) in an Atari ST. The channels are reversed! */
# define st_escc ((*(volatile struct SCC*)0xfffffa31))
# define st_escc_dsr ((*(volatile char *)0xfffffa39))

/* TT SCC DMA Controller (same chip as SCSI DMA) */

#define	TT_SCC_DMA_BAS	(0xffff8c00)
#define	tt_scc_dma	((*(volatile struct TT_DMA *)TT_SCC_DMA_BAS))

/*
** VIDEL Palette Register
 */

#define FPL_BAS (0xffff9800)
struct VIDEL_PALETTE
 {
  u_long reg[256];
 };
# define videl_palette ((*(volatile struct VIDEL_PALETTE*)FPL_BAS))


/*
** Falcon DSP Host Interface
 */

#define DSP56K_HOST_INTERFACE_BASE (0xffffa200)
struct DSP56K_HOST_INTERFACE {
  u_char icr;
#define DSP56K_ICR_RREQ	0x01
#define DSP56K_ICR_TREQ	0x02
#define DSP56K_ICR_HF0	0x08
#define DSP56K_ICR_HF1	0x10
#define DSP56K_ICR_HM0	0x20
#define DSP56K_ICR_HM1	0x40
#define DSP56K_ICR_INIT	0x80

  u_char cvr;
#define DSP56K_CVR_HV_MASK 0x1f
#define DSP56K_CVR_HC	0x80

  u_char isr;
#define DSP56K_ISR_RXDF	0x01
#define DSP56K_ISR_TXDE	0x02
#define DSP56K_ISR_TRDY	0x04
#define DSP56K_ISR_HF2	0x08
#define DSP56K_ISR_HF3	0x10
#define DSP56K_ISR_DMA	0x40
#define DSP56K_ISR_HREQ	0x80

  u_char ivr;

  union {
    u_char b[4];
    u_short w[2];
    u_long l;
  } data;
};
#define dsp56k_host_interface ((*(volatile struct DSP56K_HOST_INTERFACE *)DSP56K_HOST_INTERFACE_BASE))

/*
** MFP 68901
 */

#define MFP_BAS (0xfffffa01)
struct MFP
 {
  u_char par_dt_reg;
  u_char char_dummy1;
  u_char active_edge;
  u_char char_dummy2;
  u_char data_dir;
  u_char char_dummy3;
  u_char int_en_a;
  u_char char_dummy4;
  u_char int_en_b;
  u_char char_dummy5;
  u_char int_pn_a;
  u_char char_dummy6;
  u_char int_pn_b;
  u_char char_dummy7;
  u_char int_sv_a;
  u_char char_dummy8;
  u_char int_sv_b;
  u_char char_dummy9;
  u_char int_mk_a;
  u_char char_dummy10;
  u_char int_mk_b;
  u_char char_dummy11;
  u_char vec_adr;
  u_char char_dummy12;
  u_char tim_ct_a;
  u_char char_dummy13;
  u_char tim_ct_b;
  u_char char_dummy14;
  u_char tim_ct_cd;
  u_char char_dummy15;
  u_char tim_dt_a;
  u_char char_dummy16;
  u_char tim_dt_b;
  u_char char_dummy17;
  u_char tim_dt_c;
  u_char char_dummy18;
  u_char tim_dt_d;
  u_char char_dummy19;
  u_char sync_char;
  u_char char_dummy20;
  u_char usart_ctr;
  u_char char_dummy21;
  u_char rcv_stat;
  u_char char_dummy22;
  u_char trn_stat;
  u_char char_dummy23;
  u_char usart_dta;
 };
# define st_mfp ((*(volatile struct MFP*)MFP_BAS))

/* TT's second MFP */

#define	TT_MFP_BAS	(0xfffffa81)
# define tt_mfp ((*(volatile struct MFP*)TT_MFP_BAS))


/* TT System Control Unit */

#define	TT_SCU_BAS	(0xffff8e01)
struct TT_SCU {
	u_char	sys_mask;
	u_char	char_dummy1;
	u_char	sys_stat;
	u_char	char_dummy2;
	u_char	softint;
	u_char	char_dummy3;
	u_char	vmeint;
	u_char	char_dummy4;
	u_char	gp_reg1;
	u_char	char_dummy5;
	u_char	gp_reg2;
	u_char	char_dummy6;
	u_char	vme_mask;
	u_char	char_dummy7;
	u_char	vme_stat;
};
#define	tt_scu	((*(volatile struct TT_SCU *)TT_SCU_BAS))

/* TT real time clock */

#define	TT_RTC_BAS	(0xffff8961)
struct TT_RTC {
	u_char	regsel;
	u_char	dummy;
	u_char	data;
};
#define	tt_rtc	((*(volatile struct TT_RTC *)TT_RTC_BAS))


/*
** ACIA 6850
 */
/* constants for the ACIA registers */

/* baudrate selection and reset (Baudrate = clock/factor) */
#define ACIA_DIV1  0
#define ACIA_DIV16 1
#define ACIA_DIV64 2
#define ACIA_RESET 3

/* character format */
#define ACIA_D7E2S (0<<2)	/* 7 data, even parity, 2 stop */
#define ACIA_D7O2S (1<<2)	/* 7 data, odd parity, 2 stop */
#define ACIA_D7E1S (2<<2)	/* 7 data, even parity, 1 stop */
#define ACIA_D7O1S (3<<2)	/* 7 data, odd parity, 1 stop */
#define ACIA_D8N2S (4<<2)	/* 8 data, no parity, 2 stop */
#define ACIA_D8N1S (5<<2)	/* 8 data, no parity, 1 stop */
#define ACIA_D8E1S (6<<2)	/* 8 data, even parity, 1 stop */
#define ACIA_D8O1S (7<<2)	/* 8 data, odd parity, 1 stop */

/* transmit control */
#define ACIA_RLTID (0<<5)	/* RTS low, TxINT disabled */
#define ACIA_RLTIE (1<<5)	/* RTS low, TxINT enabled */
#define ACIA_RHTID (2<<5)	/* RTS high, TxINT disabled */
#define ACIA_RLTIDSB (3<<5)	/* RTS low, TxINT disabled, send break */

/* receive control */
#define ACIA_RID (0<<7)		/* RxINT disabled */
#define ACIA_RIE (1<<7)		/* RxINT enabled */

/* status fields of the ACIA */
#define ACIA_RDRF 1		/* Receive Data Register Full */
#define ACIA_TDRE (1<<1)	/* Transmit Data Register Empty */
#define ACIA_DCD  (1<<2)	/* Data Carrier Detect */
#define ACIA_CTS  (1<<3)	/* Clear To Send */
#define ACIA_FE   (1<<4)	/* Framing Error */
#define ACIA_OVRN (1<<5)	/* Receiver Overrun */
#define ACIA_PE   (1<<6)	/* Parity Error */
#define ACIA_IRQ  (1<<7)	/* Interrupt Request */

#define ACIA_BAS (0xfffffc00)
struct ACIA
 {
  u_char key_ctrl;
  u_char char_dummy1;
  u_char key_data;
  u_char char_dummy2;
  u_char mid_ctrl;
  u_char char_dummy3;
  u_char mid_data;
 };
# define acia ((*(volatile struct ACIA*)ACIA_BAS))

#define	TT_DMASND_BAS (0xffff8900)
struct TT_DMASND {
	u_char	int_ctrl;	/* Falcon: Interrupt control */
	u_char	ctrl;
	u_char	pad2;
	u_char	bas_hi;
	u_char	pad3;
	u_char	bas_mid;
	u_char	pad4;
	u_char	bas_low;
	u_char	pad5;
	u_char	addr_hi;
	u_char	pad6;
	u_char	addr_mid;
	u_char	pad7;
	u_char	addr_low;
	u_char	pad8;
	u_char	end_hi;
	u_char	pad9;
	u_char	end_mid;
	u_char	pad10;
	u_char	end_low;
	u_char	pad11[12];
	u_char	track_select;	/* Falcon */
	u_char	mode;
	u_char	pad12[14];
	/* Falcon only: */
	u_short	cbar_src;
	u_short cbar_dst;
	u_char	ext_div;
	u_char	int_div;
	u_char	rec_track_select;
	u_char	dac_src;
	u_char	adc_src;
	u_char	input_gain;
	u_short	output_atten;
};
# define tt_dmasnd ((*(volatile struct TT_DMASND *)TT_DMASND_BAS))

#define DMASND_MFP_INT_REPLAY     0x01
#define DMASND_MFP_INT_RECORD     0x02
#define DMASND_TIMERA_INT_REPLAY  0x04
#define DMASND_TIMERA_INT_RECORD  0x08

#define	DMASND_CTRL_OFF		  0x00
#define	DMASND_CTRL_ON		  0x01
#define	DMASND_CTRL_REPEAT	  0x02
#define DMASND_CTRL_RECORD_ON     0x10
#define DMASND_CTRL_RECORD_OFF    0x00
#define DMASND_CTRL_RECORD_REPEAT 0x20
#define DMASND_CTRL_SELECT_REPLAY 0x00
#define DMASND_CTRL_SELECT_RECORD 0x80
#define	DMASND_MODE_MONO	  0x80
#define	DMASND_MODE_STEREO	  0x00
#define DMASND_MODE_8BIT	  0x00
#define DMASND_MODE_16BIT	  0x40	/* Falcon only */
#define	DMASND_MODE_6KHZ	  0x00	/* Falcon: mute */
#define	DMASND_MODE_12KHZ	  0x01
#define	DMASND_MODE_25KHZ	  0x02
#define	DMASND_MODE_50KHZ	  0x03


#define DMASNDSetBase(bufstart)						\
    do {								\
	tt_dmasnd.bas_hi  = (unsigned char)(((bufstart) & 0xff0000) >> 16); \
	tt_dmasnd.bas_mid = (unsigned char)(((bufstart) & 0x00ff00) >> 8); \
	tt_dmasnd.bas_low = (unsigned char) ((bufstart) & 0x0000ff); \
    } while( 0 )

#define DMASNDGetAdr() ((tt_dmasnd.addr_hi << 16) +	\
			(tt_dmasnd.addr_mid << 8) +	\
			(tt_dmasnd.addr_low))

#define DMASNDSetEnd(bufend)				\
    do {						\
	tt_dmasnd.end_hi  = (unsigned char)(((bufend) & 0xff0000) >> 16); \
	tt_dmasnd.end_mid = (unsigned char)(((bufend) & 0x00ff00) >> 8); \
	tt_dmasnd.end_low = (unsigned char) ((bufend) & 0x0000ff); \
    } while( 0 )


#define	TT_MICROWIRE_BAS	(0xffff8922)
struct TT_MICROWIRE {
	u_short	data;
	u_short	mask;
};
# define tt_microwire ((*(volatile struct TT_MICROWIRE *)TT_MICROWIRE_BAS))

#define	MW_LM1992_ADDR		0x0400

#define	MW_LM1992_VOLUME(dB)	\
    (0x0c0 | ((dB) < -80 ? 0 : (dB) > 0 ? 40 : (((dB) + 80) / 2)))
#define	MW_LM1992_BALLEFT(dB)	\
    (0x140 | ((dB) < -40 ? 0 : (dB) > 0 ? 20 : (((dB) + 40) / 2)))
#define	MW_LM1992_BALRIGHT(dB)	\
    (0x100 | ((dB) < -40 ? 0 : (dB) > 0 ? 20 : (((dB) + 40) / 2)))
#define	MW_LM1992_TREBLE(dB)	\
    (0x080 | ((dB) < -12 ? 0 : (dB) > 12 ? 12 : (((dB) / 2) + 6)))
#define	MW_LM1992_BASS(dB)	\
    (0x040 | ((dB) < -12 ? 0 : (dB) > 12 ? 12 : (((dB) / 2) + 6)))

#define	MW_LM1992_PSG_LOW	0x000
#define	MW_LM1992_PSG_HIGH	0x001
#define	MW_LM1992_PSG_OFF	0x002

#define MSTE_RTC_BAS	(0xfffffc21)

struct MSTE_RTC {
	u_char sec_ones;
	u_char dummy1;
	u_char sec_tens;
	u_char dummy2;
	u_char min_ones;
	u_char dummy3;
	u_char min_tens;
	u_char dummy4;
	u_char hr_ones;
	u_char dummy5;
	u_char hr_tens;
	u_char dummy6;
	u_char weekday;
	u_char dummy7;
	u_char day_ones;
	u_char dummy8;
	u_char day_tens;
	u_char dummy9;
	u_char mon_ones;
	u_char dummy10;
	u_char mon_tens;
	u_char dummy11;
	u_char year_ones;
	u_char dummy12;
	u_char year_tens;
	u_char dummy13;
	u_char mode;
	u_char dummy14;
	u_char test;
	u_char dummy15;
	u_char reset;
};

#define mste_rtc ((*(volatile struct MSTE_RTC *)MSTE_RTC_BAS))

/*
** EtherNAT add-on card for Falcon - combined ethernet and USB adapter
*/

#define ATARI_ETHERNAT_PHYS_ADDR	0x80000000

#endif /* linux/atarihw.h */


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