arch/m68k/include/asm/atarihw.h

   1 /*
   2 ** linux/atarihw.h -- This header defines some macros and pointers for
   3 **                    the various Atari custom hardware registers.
   4 **
   5 ** Copyright 1994 by Björn Brauel
   6 **
   7 ** 5/1/94 Roman Hodek:
   8 **   Added definitions for TT specific chips.
   9 **
  10 ** 1996-09-13 lars brinkhoff <f93labr@dd.chalmers.se>:
  11 **   Finally added definitions for the matrix/codec and the DSP56001 host
  12 **   interface.
  13 **
  14 ** This file is subject to the terms and conditions of the GNU General Public
  15 ** License.  See the file COPYING in the main directory of this archive
  16 ** for more details.
  17 **
  18 */
  19
  20 #ifndef _LINUX_ATARIHW_H_
  21 #define _LINUX_ATARIHW_H_
  22
  23 #include <linux/types.h>
  24 #include <asm/bootinfo.h>
  25 #include <asm/raw_io.h>
  26
  27 extern u_long atari_mch_cookie;
  28 extern u_long atari_mch_type;
  29 extern u_long atari_switches;
  30 extern int atari_rtc_year_offset;
  31 extern int atari_dont_touch_floppy_select;
  32
  33 /* convenience macros for testing machine type */
  34 #define MACH_IS_ST      ((atari_mch_cookie >> 16) == ATARI_MCH_ST)
  35 #define MACH_IS_STE     ((atari_mch_cookie >> 16) == ATARI_MCH_STE && \
  36                          (atari_mch_cookie & 0xffff) == 0)
  37 #define MACH_IS_MSTE    ((atari_mch_cookie >> 16) == ATARI_MCH_STE && \
  38                          (atari_mch_cookie & 0xffff) == 0x10)
  39 #define MACH_IS_TT      ((atari_mch_cookie >> 16) == ATARI_MCH_TT)
  40 #define MACH_IS_FALCON  ((atari_mch_cookie >> 16) == ATARI_MCH_FALCON)
  41 #define MACH_IS_MEDUSA  (atari_mch_type == ATARI_MACH_MEDUSA)
  42 #define MACH_IS_AB40    (atari_mch_type == ATARI_MACH_AB40)
  43
  44 /* values for atari_switches */
  45 #define ATARI_SWITCH_IKBD       0x01
  46 #define ATARI_SWITCH_MIDI       0x02
  47 #define ATARI_SWITCH_SND6       0x04
  48 #define ATARI_SWITCH_SND7       0x08
  49 #define ATARI_SWITCH_OVSC_SHIFT 16
  50 #define ATARI_SWITCH_OVSC_IKBD  (ATARI_SWITCH_IKBD << ATARI_SWITCH_OVSC_SHIFT)
  51 #define ATARI_SWITCH_OVSC_MIDI  (ATARI_SWITCH_MIDI << ATARI_SWITCH_OVSC_SHIFT)
  52 #define ATARI_SWITCH_OVSC_SND6  (ATARI_SWITCH_SND6 << ATARI_SWITCH_OVSC_SHIFT)
  53 #define ATARI_SWITCH_OVSC_SND7  (ATARI_SWITCH_SND7 << ATARI_SWITCH_OVSC_SHIFT)
  54 #define ATARI_SWITCH_OVSC_MASK  0xffff0000
  55
  56 /*
  57  * Define several Hardware-Chips for indication so that for the ATARI we do
  58  * no longer decide whether it is a Falcon or other machine . It's just
  59  * important what hardware the machine uses
  60  */
  61
  62 /* ++roman 08/08/95: rewritten from ORing constants to a C bitfield */
  63
  64 #define ATARIHW_DECLARE(name)   unsigned name : 1
  65 #define ATARIHW_SET(name)       (atari_hw_present.name = 1)
  66 #define ATARIHW_PRESENT(name)   (atari_hw_present.name)
  67
  68 struct atari_hw_present {
  69     /* video hardware */
  70     ATARIHW_DECLARE(STND_SHIFTER);      /* ST-Shifter - no base low ! */
  71     ATARIHW_DECLARE(EXTD_SHIFTER);      /* STe-Shifter - 24 bit address */
  72     ATARIHW_DECLARE(TT_SHIFTER);        /* TT-Shifter */
  73     ATARIHW_DECLARE(VIDEL_SHIFTER);     /* Falcon-Shifter */
  74     /* sound hardware */
  75     ATARIHW_DECLARE(YM_2149);           /* Yamaha YM 2149 */
  76     ATARIHW_DECLARE(PCM_8BIT);          /* PCM-Sound in STe-ATARI */
  77     ATARIHW_DECLARE(CODEC);             /* CODEC Sound (Falcon) */
  78     /* disk storage interfaces */
  79     ATARIHW_DECLARE(TT_SCSI);           /* Directly mapped NCR5380 */
  80     ATARIHW_DECLARE(ST_SCSI);           /* NCR5380 via ST-DMA (Falcon) */
  81     ATARIHW_DECLARE(ACSI);              /* Standard ACSI like in STs */
  82     ATARIHW_DECLARE(IDE);               /* IDE Interface */
  83     ATARIHW_DECLARE(FDCSPEED);          /* 8/16 MHz switch for FDC */
  84     /* other I/O hardware */
  85     ATARIHW_DECLARE(ST_MFP);            /* The ST-MFP (there should be no Atari
  86                                            without it... but who knows?) */
  87     ATARIHW_DECLARE(TT_MFP);            /* 2nd MFP */
  88     ATARIHW_DECLARE(SCC);               /* Serial Communications Contr. */
  89     ATARIHW_DECLARE(ST_ESCC);           /* SCC Z83230 in an ST */
  90     ATARIHW_DECLARE(ANALOG_JOY);        /* Paddle Interface for STe
  91                                            and Falcon */
  92     ATARIHW_DECLARE(MICROWIRE);         /* Microwire Interface */
  93     /* DMA */
  94     ATARIHW_DECLARE(STND_DMA);          /* 24 Bit limited ST-DMA */
  95     ATARIHW_DECLARE(EXTD_DMA);          /* 32 Bit ST-DMA */
  96     ATARIHW_DECLARE(SCSI_DMA);          /* DMA for the NCR5380 */
  97     ATARIHW_DECLARE(SCC_DMA);           /* DMA for the SCC */
  98     /* real time clocks */
  99     ATARIHW_DECLARE(TT_CLK);            /* TT compatible clock chip */
 100     ATARIHW_DECLARE(MSTE_CLK);          /* Mega ST(E) clock chip */
 101     /* supporting hardware */
 102     ATARIHW_DECLARE(SCU);               /* System Control Unit */
 103     ATARIHW_DECLARE(BLITTER);           /* Blitter */
 104     ATARIHW_DECLARE(VME);               /* VME Bus */
 105     ATARIHW_DECLARE(DSP56K);            /* DSP56k processor in Falcon */
 106 };
 107
 108 extern struct atari_hw_present atari_hw_present;
 109
 110
 111 /* Reading the MFP port register gives a machine independent delay, since the
 112  * MFP always has a 8 MHz clock. This avoids problems with the varying length
 113  * of nops on various machines. Somebody claimed that the tstb takes 600 ns.
 114  */
 115 #define MFPDELAY() \
 116         __asm__ __volatile__ ( "tstb %0" : : "m" (st_mfp.par_dt_reg) : "cc" );
 117
 118 /* Do cache push/invalidate for DMA read/write. This function obeys the
 119  * snooping on some machines (Medusa) and processors: The Medusa itself can
 120  * snoop, but only the '040 can source data from its cache to DMA writes i.e.,
 121  * reads from memory). Both '040 and '060 invalidate cache entries on snooped
 122  * DMA reads (i.e., writes to memory).
 123  */
 124
 125
 126 #define atari_readb   raw_inb
 127 #define atari_writeb  raw_outb
 128
 129 #define atari_inb_p   raw_inb
 130 #define atari_outb_p  raw_outb
 131
 132
 133
 134 #include <linux/mm.h>
 135 #include <asm/cacheflush.h>
 136
 137 static inline void dma_cache_maintenance( unsigned long paddr,
 138                                           unsigned long len,
 139                                           int writeflag )
 140
 141 {
 142         if (writeflag) {
 143                 if (!MACH_IS_MEDUSA || CPU_IS_060)
 144                         cache_push( paddr, len );
 145         }
 146         else {
 147                 if (!MACH_IS_MEDUSA)
 148                         cache_clear( paddr, len );
 149         }
 150 }
 151
 152
 153 /*
 154 ** Shifter
 155  */
 156 #define ST_LOW  0
 157 #define ST_MID  1
 158 #define ST_HIGH 2
 159 #define TT_LOW  7
 160 #define TT_MID  4
 161 #define TT_HIGH 6
 162
 163 #define SHF_BAS (0xffff8200)
 164 struct SHIFTER
 165  {
 166         u_char pad1;
 167         u_char bas_hi;
 168         u_char pad2;
 169         u_char bas_md;
 170         u_char pad3;
 171         u_char volatile vcounthi;
 172         u_char pad4;
 173         u_char volatile vcountmid;
 174         u_char pad5;
 175         u_char volatile vcountlow;
 176         u_char volatile syncmode;
 177         u_char pad6;
 178         u_char pad7;
 179         u_char bas_lo;
 180  };
 181 # define shifter ((*(volatile struct SHIFTER *)SHF_BAS))
 182
 183 #define SHF_FBAS (0xffff820e)
 184 struct SHIFTER_F030
 185  {
 186   u_short off_next;
 187   u_short scn_width;
 188  };
 189 # define shifter_f030 ((*(volatile struct SHIFTER_F030 *)SHF_FBAS))
 190
 191
 192 #define SHF_TBAS (0xffff8200)
 193 struct SHIFTER_TT {
 194         u_char  char_dummy0;
 195         u_char  bas_hi;                 /* video mem base addr, high and mid byte */
 196         u_char  char_dummy1;
 197         u_char  bas_md;
 198         u_char  char_dummy2;
 199         u_char  vcount_hi;              /* pointer to currently displayed byte */
 200         u_char  char_dummy3;
 201         u_char  vcount_md;
 202         u_char  char_dummy4;
 203         u_char  vcount_lo;
 204         u_short st_sync;                /* ST compatible sync mode register, unused */
 205         u_char  char_dummy5;
 206         u_char  bas_lo;                 /* video mem addr, low byte */
 207         u_char  char_dummy6[2+3*16];
 208         /* $ffff8240: */
 209         u_short color_reg[16];  /* 16 color registers */
 210         u_char  st_shiftmode;   /* ST compatible shift mode register, unused */
 211         u_char  char_dummy7;
 212         u_short tt_shiftmode;   /* TT shift mode register */
 213
 214
 215 };
 216 #define shifter_tt      ((*(volatile struct SHIFTER_TT *)SHF_TBAS))
 217
 218 /* values for shifter_tt->tt_shiftmode */
 219 #define TT_SHIFTER_STLOW                0x0000
 220 #define TT_SHIFTER_STMID                0x0100
 221 #define TT_SHIFTER_STHIGH               0x0200
 222 #define TT_SHIFTER_TTLOW                0x0700
 223 #define TT_SHIFTER_TTMID                0x0400
 224 #define TT_SHIFTER_TTHIGH               0x0600
 225 #define TT_SHIFTER_MODEMASK     0x0700
 226 #define TT_SHIFTER_NUMMODE      0x0008
 227 #define TT_SHIFTER_PALETTE_MASK 0x000f
 228 #define TT_SHIFTER_GRAYMODE             0x1000
 229
 230 /* 256 TT palette registers */
 231 #define TT_PALETTE_BASE (0xffff8400)
 232 #define tt_palette      ((volatile u_short *)TT_PALETTE_BASE)
 233
 234 #define TT_PALETTE_RED_MASK             0x0f00
 235 #define TT_PALETTE_GREEN_MASK   0x00f0
 236 #define TT_PALETTE_BLUE_MASK    0x000f
 237
 238 /*
 239 ** Falcon030 VIDEL Video Controller
 240 ** for description see File 'linux\tools\atari\hardware.txt
 241  */
 242 #define f030_col ((u_long *)            0xffff9800)
 243 #define f030_xreg ((u_short*)           0xffff8282)
 244 #define f030_yreg ((u_short*)           0xffff82a2)
 245 #define f030_creg ((u_short*)           0xffff82c0)
 246 #define f030_sreg ((u_short*)           0xffff8260)
 247 #define f030_mreg ((u_short*)           0xffff820a)
 248 #define f030_linewidth ((u_short*)      0xffff820e)
 249 #define f030_hscroll ((u_char*)         0xffff8265)
 250
 251 #define VIDEL_BAS (0xffff8260)
 252 struct VIDEL {
 253         u_short st_shift;
 254         u_short pad1;
 255         u_char  xoffset_s;
 256         u_char  xoffset;
 257         u_short f_shift;
 258         u_char  pad2[0x1a];
 259         u_short hht;
 260         u_short hbb;
 261         u_short hbe;
 262         u_short hdb;
 263         u_short hde;
 264         u_short hss;
 265         u_char  pad3[0x14];
 266         u_short vft;
 267         u_short vbb;
 268         u_short vbe;
 269         u_short vdb;
 270         u_short vde;
 271         u_short vss;
 272         u_char  pad4[0x12];
 273         u_short control;
 274         u_short mode;
 275 };
 276 #define videl   ((*(volatile struct VIDEL *)VIDEL_BAS))
 277
 278 /*
 279 ** DMA/WD1772 Disk Controller
 280  */
 281
 282 #define FWD_BAS (0xffff8604)
 283 struct DMA_WD
 284  {
 285   u_short fdc_acces_seccount;
 286   u_short dma_mode_status;
 287   u_char dma_vhi;       /* Some extended ST-DMAs can handle 32 bit addresses */
 288   u_char dma_hi;
 289   u_char char_dummy2;
 290   u_char dma_md;
 291   u_char char_dummy3;
 292   u_char dma_lo;
 293   u_short fdc_speed;
 294  };
 295 # define dma_wd ((*(volatile struct DMA_WD *)FWD_BAS))
 296 /* alias */
 297 #define st_dma dma_wd
 298 /* The two highest bytes of an extended DMA as a short; this is a must
 299  * for the Medusa.
 300  */
 301 #define st_dma_ext_dmahi (*((volatile unsigned short *)0xffff8608))
 302
 303 /*
 304 ** YM2149 Sound Chip
 305 ** access in bytes
 306  */
 307
 308 #define YM_BAS (0xffff8800)
 309 struct SOUND_YM
 310  {
 311   u_char rd_data_reg_sel;
 312   u_char char_dummy1;
 313   u_char wd_data;
 314  };
 315 #define sound_ym ((*(volatile struct SOUND_YM *)YM_BAS))
 316
 317 /* TT SCSI DMA */
 318
 319 #define TT_SCSI_DMA_BAS (0xffff8700)
 320 struct TT_DMA {
 321         u_char  char_dummy0;
 322         u_char  dma_addr_hi;
 323         u_char  char_dummy1;
 324         u_char  dma_addr_hmd;
 325         u_char  char_dummy2;
 326         u_char  dma_addr_lmd;
 327         u_char  char_dummy3;
 328         u_char  dma_addr_lo;
 329         u_char  char_dummy4;
 330         u_char  dma_cnt_hi;
 331         u_char  char_dummy5;
 332         u_char  dma_cnt_hmd;
 333         u_char  char_dummy6;
 334         u_char  dma_cnt_lmd;
 335         u_char  char_dummy7;
 336         u_char  dma_cnt_lo;
 337         u_long  dma_restdata;
 338         u_short dma_ctrl;
 339 };
 340 #define tt_scsi_dma     ((*(volatile struct TT_DMA *)TT_SCSI_DMA_BAS))
 341
 342 /* TT SCSI Controller 5380 */
 343
 344 #define TT_5380_BAS     (0xffff8781)
 345 struct TT_5380 {
 346         u_char  scsi_data;
 347         u_char  char_dummy1;
 348         u_char  scsi_icr;
 349         u_char  char_dummy2;
 350         u_char  scsi_mode;
 351         u_char  char_dummy3;
 352         u_char  scsi_tcr;
 353         u_char  char_dummy4;
 354         u_char  scsi_idstat;
 355         u_char  char_dummy5;
 356         u_char  scsi_dmastat;
 357         u_char  char_dummy6;
 358         u_char  scsi_targrcv;
 359         u_char  char_dummy7;
 360         u_char  scsi_inircv;
 361 };
 362 #define tt_scsi                 ((*(volatile struct TT_5380 *)TT_5380_BAS))
 363 #define tt_scsi_regp    ((volatile char *)TT_5380_BAS)
 364
 365
 366 /*
 367 ** Falcon DMA Sound Subsystem
 368  */
 369
 370 #define MATRIX_BASE (0xffff8930)
 371 struct MATRIX
 372 {
 373   u_short source;
 374   u_short destination;
 375   u_char external_frequency_divider;
 376   u_char internal_frequency_divider;
 377 };
 378 #define falcon_matrix (*(volatile struct MATRIX *)MATRIX_BASE)
 379
 380 #define CODEC_BASE (0xffff8936)
 381 struct CODEC
 382 {
 383   u_char tracks;
 384   u_char input_source;
 385 #define CODEC_SOURCE_ADC        1
 386 #define CODEC_SOURCE_MATRIX     2
 387   u_char adc_source;
 388 #define ADC_SOURCE_RIGHT_PSG    1
 389 #define ADC_SOURCE_LEFT_PSG     2
 390   u_char gain;
 391 #define CODEC_GAIN_RIGHT        0x0f
 392 #define CODEC_GAIN_LEFT         0xf0
 393   u_char attenuation;
 394 #define CODEC_ATTENUATION_RIGHT 0x0f
 395 #define CODEC_ATTENUATION_LEFT  0xf0
 396   u_char unused1;
 397   u_char status;
 398 #define CODEC_OVERFLOW_RIGHT    1
 399 #define CODEC_OVERFLOW_LEFT     2
 400   u_char unused2, unused3, unused4, unused5;
 401   u_char gpio_directions;
 402 #define GPIO_IN                 0
 403 #define GPIO_OUT                1
 404   u_char unused6;
 405   u_char gpio_data;
 406 };
 407 #define falcon_codec (*(volatile struct CODEC *)CODEC_BASE)
 408
 409 /*
 410 ** Falcon Blitter
 411 */
 412
 413 #define BLT_BAS (0xffff8a00)
 414
 415 struct BLITTER
 416  {
 417   u_short halftone[16];
 418   u_short src_x_inc;
 419   u_short src_y_inc;
 420   u_long src_address;
 421   u_short endmask1;
 422   u_short endmask2;
 423   u_short endmask3;
 424   u_short dst_x_inc;
 425   u_short dst_y_inc;
 426   u_long dst_address;
 427   u_short wd_per_line;
 428   u_short ln_per_bb;
 429   u_short hlf_op_reg;
 430   u_short log_op_reg;
 431   u_short lin_nm_reg;
 432   u_short skew_reg;
 433  };
 434 # define blitter ((*(volatile struct BLITTER *)BLT_BAS))
 435
 436
 437 /*
 438 ** SCC Z8530
 439  */
 440
 441 #define SCC_BAS (0xffff8c81)
 442 struct SCC
 443  {
 444   u_char cha_a_ctrl;
 445   u_char char_dummy1;
 446   u_char cha_a_data;
 447   u_char char_dummy2;
 448   u_char cha_b_ctrl;
 449   u_char char_dummy3;
 450   u_char cha_b_data;
 451  };
 452 # define scc ((*(volatile struct SCC*)SCC_BAS))
 453
 454 /* The ESCC (Z85230) in an Atari ST. The channels are reversed! */
 455 # define st_escc ((*(volatile struct SCC*)0xfffffa31))
 456 # define st_escc_dsr ((*(volatile char *)0xfffffa39))
 457
 458 /* TT SCC DMA Controller (same chip as SCSI DMA) */
 459
 460 #define TT_SCC_DMA_BAS  (0xffff8c00)
 461 #define tt_scc_dma      ((*(volatile struct TT_DMA *)TT_SCC_DMA_BAS))
 462
 463 /*
 464 ** VIDEL Palette Register
 465  */
 466
 467 #define FPL_BAS (0xffff9800)
 468 struct VIDEL_PALETTE
 469  {
 470   u_long reg[256];
 471  };
 472 # define videl_palette ((*(volatile struct VIDEL_PALETTE*)FPL_BAS))
 473
 474
 475 /*
 476 ** Falcon DSP Host Interface
 477  */
 478
 479 #define DSP56K_HOST_INTERFACE_BASE (0xffffa200)
 480 struct DSP56K_HOST_INTERFACE {
 481   u_char icr;
 482 #define DSP56K_ICR_RREQ 0x01
 483 #define DSP56K_ICR_TREQ 0x02
 484 #define DSP56K_ICR_HF0  0x08
 485 #define DSP56K_ICR_HF1  0x10
 486 #define DSP56K_ICR_HM0  0x20
 487 #define DSP56K_ICR_HM1  0x40
 488 #define DSP56K_ICR_INIT 0x80
 489
 490   u_char cvr;
 491 #define DSP56K_CVR_HV_MASK 0x1f
 492 #define DSP56K_CVR_HC   0x80
 493
 494   u_char isr;
 495 #define DSP56K_ISR_RXDF 0x01
 496 #define DSP56K_ISR_TXDE 0x02
 497 #define DSP56K_ISR_TRDY 0x04
 498 #define DSP56K_ISR_HF2  0x08
 499 #define DSP56K_ISR_HF3  0x10
 500 #define DSP56K_ISR_DMA  0x40
 501 #define DSP56K_ISR_HREQ 0x80
 502
 503   u_char ivr;
 504
 505   union {
 506     u_char b[4];
 507     u_short w[2];
 508     u_long l;
 509   } data;
 510 };
 511 #define dsp56k_host_interface ((*(volatile struct DSP56K_HOST_INTERFACE *)DSP56K_HOST_INTERFACE_BASE))
 512
 513 /*
 514 ** MFP 68901
 515  */
 516
 517 #define MFP_BAS (0xfffffa01)
 518 struct MFP
 519  {
 520   u_char par_dt_reg;
 521   u_char char_dummy1;
 522   u_char active_edge;
 523   u_char char_dummy2;
 524   u_char data_dir;
 525   u_char char_dummy3;
 526   u_char int_en_a;
 527   u_char char_dummy4;
 528   u_char int_en_b;
 529   u_char char_dummy5;
 530   u_char int_pn_a;
 531   u_char char_dummy6;
 532   u_char int_pn_b;
 533   u_char char_dummy7;
 534   u_char int_sv_a;
 535   u_char char_dummy8;
 536   u_char int_sv_b;
 537   u_char char_dummy9;
 538   u_char int_mk_a;
 539   u_char char_dummy10;
 540   u_char int_mk_b;
 541   u_char char_dummy11;
 542   u_char vec_adr;
 543   u_char char_dummy12;
 544   u_char tim_ct_a;
 545   u_char char_dummy13;
 546   u_char tim_ct_b;
 547   u_char char_dummy14;
 548   u_char tim_ct_cd;
 549   u_char char_dummy15;
 550   u_char tim_dt_a;
 551   u_char char_dummy16;
 552   u_char tim_dt_b;
 553   u_char char_dummy17;
 554   u_char tim_dt_c;
 555   u_char char_dummy18;
 556   u_char tim_dt_d;
 557   u_char char_dummy19;
 558   u_char sync_char;
 559   u_char char_dummy20;
 560   u_char usart_ctr;
 561   u_char char_dummy21;
 562   u_char rcv_stat;
 563   u_char char_dummy22;
 564   u_char trn_stat;
 565   u_char char_dummy23;
 566   u_char usart_dta;
 567  };
 568 # define st_mfp ((*(volatile struct MFP*)MFP_BAS))
 569
 570 /* TT's second MFP */
 571
 572 #define TT_MFP_BAS      (0xfffffa81)
 573 # define tt_mfp ((*(volatile struct MFP*)TT_MFP_BAS))
 574
 575
 576 /* TT System Control Unit */
 577
 578 #define TT_SCU_BAS      (0xffff8e01)
 579 struct TT_SCU {
 580         u_char  sys_mask;
 581         u_char  char_dummy1;
 582         u_char  sys_stat;
 583         u_char  char_dummy2;
 584         u_char  softint;
 585         u_char  char_dummy3;
 586         u_char  vmeint;
 587         u_char  char_dummy4;
 588         u_char  gp_reg1;
 589         u_char  char_dummy5;
 590         u_char  gp_reg2;
 591         u_char  char_dummy6;
 592         u_char  vme_mask;
 593         u_char  char_dummy7;
 594         u_char  vme_stat;
 595 };
 596 #define tt_scu  ((*(volatile struct TT_SCU *)TT_SCU_BAS))
 597
 598 /* TT real time clock */
 599
 600 #define TT_RTC_BAS      (0xffff8961)
 601 struct TT_RTC {
 602         u_char  regsel;
 603         u_char  dummy;
 604         u_char  data;
 605 };
 606 #define tt_rtc  ((*(volatile struct TT_RTC *)TT_RTC_BAS))
 607
 608
 609 /*
 610 ** ACIA 6850
 611  */
 612 /* constants for the ACIA registers */
 613
 614 /* baudrate selection and reset (Baudrate = clock/factor) */
 615 #define ACIA_DIV1  0
 616 #define ACIA_DIV16 1
 617 #define ACIA_DIV64 2
 618 #define ACIA_RESET 3
 619
 620 /* character format */
 621 #define ACIA_D7E2S (0<<2)       /* 7 data, even parity, 2 stop */
 622 #define ACIA_D7O2S (1<<2)       /* 7 data, odd parity, 2 stop */
 623 #define ACIA_D7E1S (2<<2)       /* 7 data, even parity, 1 stop */
 624 #define ACIA_D7O1S (3<<2)       /* 7 data, odd parity, 1 stop */
 625 #define ACIA_D8N2S (4<<2)       /* 8 data, no parity, 2 stop */
 626 #define ACIA_D8N1S (5<<2)       /* 8 data, no parity, 1 stop */
 627 #define ACIA_D8E1S (6<<2)       /* 8 data, even parity, 1 stop */
 628 #define ACIA_D8O1S (7<<2)       /* 8 data, odd parity, 1 stop */
 629
 630 /* transmit control */
 631 #define ACIA_RLTID (0<<5)       /* RTS low, TxINT disabled */
 632 #define ACIA_RLTIE (1<<5)       /* RTS low, TxINT enabled */
 633 #define ACIA_RHTID (2<<5)       /* RTS high, TxINT disabled */
 634 #define ACIA_RLTIDSB (3<<5)     /* RTS low, TxINT disabled, send break */
 635
 636 /* receive control */
 637 #define ACIA_RID (0<<7)         /* RxINT disabled */
 638 #define ACIA_RIE (1<<7)         /* RxINT enabled */
 639
 640 /* status fields of the ACIA */
 641 #define ACIA_RDRF 1             /* Receive Data Register Full */
 642 #define ACIA_TDRE (1<<1)        /* Transmit Data Register Empty */
 643 #define ACIA_DCD  (1<<2)        /* Data Carrier Detect */
 644 #define ACIA_CTS  (1<<3)        /* Clear To Send */
 645 #define ACIA_FE   (1<<4)        /* Framing Error */
 646 #define ACIA_OVRN (1<<5)        /* Receiver Overrun */
 647 #define ACIA_PE   (1<<6)        /* Parity Error */
 648 #define ACIA_IRQ  (1<<7)        /* Interrupt Request */
 649
 650 #define ACIA_BAS (0xfffffc00)
 651 struct ACIA
 652  {
 653   u_char key_ctrl;
 654   u_char char_dummy1;
 655   u_char key_data;
 656   u_char char_dummy2;
 657   u_char mid_ctrl;
 658   u_char char_dummy3;
 659   u_char mid_data;
 660  };
 661 # define acia ((*(volatile struct ACIA*)ACIA_BAS))
 662
 663 #define TT_DMASND_BAS (0xffff8900)
 664 struct TT_DMASND {
 665         u_char  int_ctrl;       /* Falcon: Interrupt control */
 666         u_char  ctrl;
 667         u_char  pad2;
 668         u_char  bas_hi;
 669         u_char  pad3;
 670         u_char  bas_mid;
 671         u_char  pad4;
 672         u_char  bas_low;
 673         u_char  pad5;
 674         u_char  addr_hi;
 675         u_char  pad6;
 676         u_char  addr_mid;
 677         u_char  pad7;
 678         u_char  addr_low;
 679         u_char  pad8;
 680         u_char  end_hi;
 681         u_char  pad9;
 682         u_char  end_mid;
 683         u_char  pad10;
 684         u_char  end_low;
 685         u_char  pad11[12];
 686         u_char  track_select;   /* Falcon */
 687         u_char  mode;
 688         u_char  pad12[14];
 689         /* Falcon only: */
 690         u_short cbar_src;
 691         u_short cbar_dst;
 692         u_char  ext_div;
 693         u_char  int_div;
 694         u_char  rec_track_select;
 695         u_char  dac_src;
 696         u_char  adc_src;
 697         u_char  input_gain;
 698         u_short output_atten;
 699 };
 700 # define tt_dmasnd ((*(volatile struct TT_DMASND *)TT_DMASND_BAS))
 701
 702 #define DMASND_MFP_INT_REPLAY     0x01
 703 #define DMASND_MFP_INT_RECORD     0x02
 704 #define DMASND_TIMERA_INT_REPLAY  0x04
 705 #define DMASND_TIMERA_INT_RECORD  0x08
 706
 707 #define DMASND_CTRL_OFF           0x00
 708 #define DMASND_CTRL_ON            0x01
 709 #define DMASND_CTRL_REPEAT        0x02
 710 #define DMASND_CTRL_RECORD_ON     0x10
 711 #define DMASND_CTRL_RECORD_OFF    0x00
 712 #define DMASND_CTRL_RECORD_REPEAT 0x20
 713 #define DMASND_CTRL_SELECT_REPLAY 0x00
 714 #define DMASND_CTRL_SELECT_RECORD 0x80
 715 #define DMASND_MODE_MONO          0x80
 716 #define DMASND_MODE_STEREO        0x00
 717 #define DMASND_MODE_8BIT          0x00
 718 #define DMASND_MODE_16BIT         0x40  /* Falcon only */
 719 #define DMASND_MODE_6KHZ          0x00  /* Falcon: mute */
 720 #define DMASND_MODE_12KHZ         0x01
 721 #define DMASND_MODE_25KHZ         0x02
 722 #define DMASND_MODE_50KHZ         0x03
 723
 724
 725 #define DMASNDSetBase(bufstart)                                         \
 726     do {                                                                \
 727         tt_dmasnd.bas_hi  = (unsigned char)(((bufstart) & 0xff0000) >> 16); \
 728         tt_dmasnd.bas_mid = (unsigned char)(((bufstart) & 0x00ff00) >> 8); \
 729         tt_dmasnd.bas_low = (unsigned char) ((bufstart) & 0x0000ff); \
 730     } while( 0 )
 731
 732 #define DMASNDGetAdr() ((tt_dmasnd.addr_hi << 16) +     \
 733                         (tt_dmasnd.addr_mid << 8) +     \
 734                         (tt_dmasnd.addr_low))
 735
 736 #define DMASNDSetEnd(bufend)                            \
 737     do {                                                \
 738         tt_dmasnd.end_hi  = (unsigned char)(((bufend) & 0xff0000) >> 16); \
 739         tt_dmasnd.end_mid = (unsigned char)(((bufend) & 0x00ff00) >> 8); \
 740         tt_dmasnd.end_low = (unsigned char) ((bufend) & 0x0000ff); \
 741     } while( 0 )
 742
 743
 744 #define TT_MICROWIRE_BAS        (0xffff8922)
 745 struct TT_MICROWIRE {
 746         u_short data;
 747         u_short mask;
 748 };
 749 # define tt_microwire ((*(volatile struct TT_MICROWIRE *)TT_MICROWIRE_BAS))
 750
 751 #define MW_LM1992_ADDR          0x0400
 752
 753 #define MW_LM1992_VOLUME(dB)    \
 754     (0x0c0 | ((dB) < -80 ? 0 : (dB) > 0 ? 40 : (((dB) + 80) / 2)))
 755 #define MW_LM1992_BALLEFT(dB)   \
 756     (0x140 | ((dB) < -40 ? 0 : (dB) > 0 ? 20 : (((dB) + 40) / 2)))
 757 #define MW_LM1992_BALRIGHT(dB)  \
 758     (0x100 | ((dB) < -40 ? 0 : (dB) > 0 ? 20 : (((dB) + 40) / 2)))
 759 #define MW_LM1992_TREBLE(dB)    \
 760     (0x080 | ((dB) < -12 ? 0 : (dB) > 12 ? 12 : (((dB) / 2) + 6)))
 761 #define MW_LM1992_BASS(dB)      \
 762     (0x040 | ((dB) < -12 ? 0 : (dB) > 12 ? 12 : (((dB) / 2) + 6)))
 763
 764 #define MW_LM1992_PSG_LOW       0x000
 765 #define MW_LM1992_PSG_HIGH      0x001
 766 #define MW_LM1992_PSG_OFF       0x002
 767
 768 #define MSTE_RTC_BAS    (0xfffffc21)
 769
 770 struct MSTE_RTC {
 771         u_char sec_ones;
 772         u_char dummy1;
 773         u_char sec_tens;
 774         u_char dummy2;
 775         u_char min_ones;
 776         u_char dummy3;
 777         u_char min_tens;
 778         u_char dummy4;
 779         u_char hr_ones;
 780         u_char dummy5;
 781         u_char hr_tens;
 782         u_char dummy6;
 783         u_char weekday;
 784         u_char dummy7;
 785         u_char day_ones;
 786         u_char dummy8;
 787         u_char day_tens;
 788         u_char dummy9;
 789         u_char mon_ones;
 790         u_char dummy10;
 791         u_char mon_tens;
 792         u_char dummy11;
 793         u_char year_ones;
 794         u_char dummy12;
 795         u_char year_tens;
 796         u_char dummy13;
 797         u_char mode;
 798         u_char dummy14;
 799         u_char test;
 800         u_char dummy15;
 801         u_char reset;
 802 };
 803
 804 #define mste_rtc ((*(volatile struct MSTE_RTC *)MSTE_RTC_BAS))
 805
 806 #endif /* linux/atarihw.h */
 807