Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 807 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/atarihw.h b/arch/m68k/include/asm/atarihw.h
new file mode 100644
index 000000000..407a617fa
--- /dev/null
+++ b/arch/m68k/include/asm/atarihw.h
@@ -0,0 +1,807 @@
+/*
+** 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;
+
+/* 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
+ {
+	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 ((*(volatile struct SHIFTER *)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 */
+