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 Bj�rn 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_HADES (atari_mch_type == ATARI_MACH_HADES)
43 #define MACH_IS_AB40 (atari_mch_type == ATARI_MACH_AB40)
44
45 /* values for atari_switches */
46 #define ATARI_SWITCH_IKBD 0x01
47 #define ATARI_SWITCH_MIDI 0x02
48 #define ATARI_SWITCH_SND6 0x04
49 #define ATARI_SWITCH_SND7 0x08
50 #define ATARI_SWITCH_OVSC_SHIFT 16
51 #define ATARI_SWITCH_OVSC_IKBD (ATARI_SWITCH_IKBD << ATARI_SWITCH_OVSC_SHIFT)
52 #define ATARI_SWITCH_OVSC_MIDI (ATARI_SWITCH_MIDI << ATARI_SWITCH_OVSC_SHIFT)
53 #define ATARI_SWITCH_OVSC_SND6 (ATARI_SWITCH_SND6 << ATARI_SWITCH_OVSC_SHIFT)
54 #define ATARI_SWITCH_OVSC_SND7 (ATARI_SWITCH_SND7 << ATARI_SWITCH_OVSC_SHIFT)
55 #define ATARI_SWITCH_OVSC_MASK 0xffff0000
56
57 /*
58 * Define several Hardware-Chips for indication so that for the ATARI we do
59 * no longer decide whether it is a Falcon or other machine . It's just
60 * important what hardware the machine uses
61 */
62
63 /* ++roman 08/08/95: rewritten from ORing constants to a C bitfield */
64
65 #define ATARIHW_DECLARE(name) unsigned name : 1
66 #define ATARIHW_SET(name) (atari_hw_present.name = 1)
67 #define ATARIHW_PRESENT(name) (atari_hw_present.name)
68
69 struct atari_hw_present {
70 /* video hardware */
71 ATARIHW_DECLARE(STND_SHIFTER); /* ST-Shifter - no base low ! */
72 ATARIHW_DECLARE(EXTD_SHIFTER); /* STe-Shifter - 24 bit address */
73 ATARIHW_DECLARE(TT_SHIFTER); /* TT-Shifter */
74 ATARIHW_DECLARE(VIDEL_SHIFTER); /* Falcon-Shifter */
75 /* sound hardware */
76 ATARIHW_DECLARE(YM_2149); /* Yamaha YM 2149 */
77 ATARIHW_DECLARE(PCM_8BIT); /* PCM-Sound in STe-ATARI */
78 ATARIHW_DECLARE(CODEC); /* CODEC Sound (Falcon) */
79 /* disk storage interfaces */
80 ATARIHW_DECLARE(TT_SCSI); /* Directly mapped NCR5380 */
81 ATARIHW_DECLARE(ST_SCSI); /* NCR5380 via ST-DMA (Falcon) */
82 ATARIHW_DECLARE(ACSI); /* Standard ACSI like in STs */
83 ATARIHW_DECLARE(IDE); /* IDE Interface */
84 ATARIHW_DECLARE(FDCSPEED); /* 8/16 MHz switch for FDC */
85 /* other I/O hardware */
86 ATARIHW_DECLARE(ST_MFP); /* The ST-MFP (there should be no Atari
87 without it... but who knows?) */
88 ATARIHW_DECLARE(TT_MFP); /* 2nd MFP */
89 ATARIHW_DECLARE(SCC); /* Serial Communications Contr. */
90 ATARIHW_DECLARE(ST_ESCC); /* SCC Z83230 in an ST */
91 ATARIHW_DECLARE(ANALOG_JOY); /* Paddle Interface for STe
92 and Falcon */
93 ATARIHW_DECLARE(MICROWIRE); /* Microwire Interface */
94 /* DMA */
95 ATARIHW_DECLARE(STND_DMA); /* 24 Bit limited ST-DMA */
96 ATARIHW_DECLARE(EXTD_DMA); /* 32 Bit ST-DMA */
97 ATARIHW_DECLARE(SCSI_DMA); /* DMA for the NCR5380 */
98 ATARIHW_DECLARE(SCC_DMA); /* DMA for the SCC */
99 /* real time clocks */
100 ATARIHW_DECLARE(TT_CLK); /* TT compatible clock chip */
101 ATARIHW_DECLARE(MSTE_CLK); /* Mega ST(E) clock chip */
102 /* supporting hardware */
103 ATARIHW_DECLARE(SCU); /* System Control Unit */
104 ATARIHW_DECLARE(BLITTER); /* Blitter */
105 ATARIHW_DECLARE(VME); /* VME Bus */
106 ATARIHW_DECLARE(DSP56K); /* DSP56k processor in Falcon */
107 };
108
109 extern struct atari_hw_present atari_hw_present;
110
111
112 /* Reading the MFP port register gives a machine independent delay, since the
113 * MFP always has a 8 MHz clock. This avoids problems with the varying length
114 * of nops on various machines. Somebody claimed that the tstb takes 600 ns.
115 */
116 #define MFPDELAY() \
117 __asm__ __volatile__ ( "tstb %0" : : "m" (mfp.par_dt_reg) : "cc" );
118
119 /* Do cache push/invalidate for DMA read/write. This function obeys the
120 * snooping on some machines (Medusa) and processors: The Medusa itself can
121 * snoop, but only the '040 can source data from its cache to DMA writes i.e.,
122 * reads from memory). Both '040 and '060 invalidate cache entries on snooped
123 * DMA reads (i.e., writes to memory).
124 */
125
126
127 #define atari_readb raw_inb
128 #define atari_writeb raw_outb
129
130 #define atari_inb_p raw_inb
131 #define atari_outb_p raw_outb
132
133
134
135 #include <linux/mm.h>
136 #include <asm/pgalloc.h>
137
dma_cache_maintenance(unsigned long paddr,unsigned long len,int writeflag)138 static inline void dma_cache_maintenance( unsigned long paddr,
139 unsigned long len,
140 int writeflag )
141
142 {
143 if (writeflag) {
144 if (!MACH_IS_MEDUSA || CPU_IS_060)
145 cache_push( paddr, len );
146 }
147 else {
148 if (!MACH_IS_MEDUSA)
149 cache_clear( paddr, len );
150 }
151 }
152
153
154 /*
155 ** Shifter
156 */
157 #define ST_LOW 0
158 #define ST_MID 1
159 #define ST_HIGH 2
160 #define TT_LOW 7
161 #define TT_MID 4
162 #define TT_HIGH 6
163
164 #define SHF_BAS (0xffff8200)
165 struct SHIFTER
166 {
167 u_char pad1;
168 u_char bas_hi;
169 u_char pad2;
170 u_char bas_md;
171 u_char pad3;
172 u_char volatile vcounthi;
173 u_char pad4;
174 u_char volatile vcountmid;
175 u_char pad5;
176 u_char volatile vcountlow;
177 u_char volatile syncmode;
178 u_char pad6;
179 u_char pad7;
180 u_char bas_lo;
181 };
182 # define shifter ((*(volatile struct SHIFTER *)SHF_BAS))
183
184 #define SHF_FBAS (0xffff820e)
185 struct SHIFTER_F030
186 {
187 u_short off_next;
188 u_short scn_width;
189 };
190 # define shifter_f030 ((*(volatile struct SHIFTER_F030 *)SHF_FBAS))
191
192
193 #define SHF_TBAS (0xffff8200)
194 struct SHIFTER_TT {
195 u_char char_dummy0;
196 u_char bas_hi; /* video mem base addr, high and mid byte */
197 u_char char_dummy1;
198 u_char bas_md;
199 u_char char_dummy2;
200 u_char vcount_hi; /* pointer to currently displayed byte */
201 u_char char_dummy3;
202 u_char vcount_md;
203 u_char char_dummy4;
204 u_char vcount_lo;
205 u_short st_sync; /* ST compatible sync mode register, unused */
206 u_char char_dummy5;
207 u_char bas_lo; /* video mem addr, low byte */
208 u_char char_dummy6[2+3*16];
209 /* $ffff8240: */
210 u_short color_reg[16]; /* 16 color registers */
211 u_char st_shiftmode; /* ST compatible shift mode register, unused */
212 u_char char_dummy7;
213 u_short tt_shiftmode; /* TT shift mode register */
214
215
216 };
217 #define shifter_tt ((*(volatile struct SHIFTER_TT *)SHF_TBAS))
218
219 /* values for shifter_tt->tt_shiftmode */
220 #define TT_SHIFTER_STLOW 0x0000
221 #define TT_SHIFTER_STMID 0x0100
222 #define TT_SHIFTER_STHIGH 0x0200
223 #define TT_SHIFTER_TTLOW 0x0700
224 #define TT_SHIFTER_TTMID 0x0400
225 #define TT_SHIFTER_TTHIGH 0x0600
226 #define TT_SHIFTER_MODEMASK 0x0700
227 #define TT_SHIFTER_NUMMODE 0x0008
228 #define TT_SHIFTER_PALETTE_MASK 0x000f
229 #define TT_SHIFTER_GRAYMODE 0x1000
230
231 /* 256 TT palette registers */
232 #define TT_PALETTE_BASE (0xffff8400)
233 #define tt_palette ((volatile u_short *)TT_PALETTE_BASE)
234
235 #define TT_PALETTE_RED_MASK 0x0f00
236 #define TT_PALETTE_GREEN_MASK 0x00f0
237 #define TT_PALETTE_BLUE_MASK 0x000f
238
239 /*
240 ** Falcon030 VIDEL Video Controller
241 ** for description see File 'linux\tools\atari\hardware.txt
242 */
243 #define f030_col ((u_long *) 0xffff9800)
244 #define f030_xreg ((u_short*) 0xffff8282)
245 #define f030_yreg ((u_short*) 0xffff82a2)
246 #define f030_creg ((u_short*) 0xffff82c0)
247 #define f030_sreg ((u_short*) 0xffff8260)
248 #define f030_mreg ((u_short*) 0xffff820a)
249 #define f030_linewidth ((u_short*) 0xffff820e)
250 #define f030_hscroll ((u_char*) 0xffff8265)
251
252 #define VIDEL_BAS (0xffff8260)
253 struct VIDEL {
254 u_short st_shift;
255 u_short pad1;
256 u_char xoffset_s;
257 u_char xoffset;
258 u_short f_shift;
259 u_char pad2[0x1a];
260 u_short hht;
261 u_short hbb;
262 u_short hbe;
263 u_short hdb;
264 u_short hde;
265 u_short hss;
266 u_char pad3[0x14];
267 u_short vft;
268 u_short vbb;
269 u_short vbe;
270 u_short vdb;
271 u_short vde;
272 u_short vss;
273 u_char pad4[0x12];
274 u_short control;
275 u_short mode;
276 };
277 #define videl ((*(volatile struct VIDEL *)VIDEL_BAS))
278
279 /*
280 ** DMA/WD1772 Disk Controller
281 */
282
283 #define FWD_BAS (0xffff8604)
284 struct DMA_WD
285 {
286 u_short fdc_acces_seccount;
287 u_short dma_mode_status;
288 u_char dma_vhi; /* Some extended ST-DMAs can handle 32 bit addresses */
289 u_char dma_hi;
290 u_char char_dummy2;
291 u_char dma_md;
292 u_char char_dummy3;
293 u_char dma_lo;
294 u_short fdc_speed;
295 };
296 # define dma_wd ((*(volatile struct DMA_WD *)FWD_BAS))
297 /* alias */
298 #define st_dma dma_wd
299 /* The two highest bytes of an extended DMA as a short; this is a must
300 * for the Medusa.
301 */
302 #define st_dma_ext_dmahi (*((volatile unsigned short *)0xffff8608))
303
304 /*
305 ** YM2149 Sound Chip
306 ** access in bytes
307 */
308
309 #define YM_BAS (0xffff8800)
310 struct SOUND_YM
311 {
312 u_char rd_data_reg_sel;
313 u_char char_dummy1;
314 u_char wd_data;
315 };
316 #define sound_ym ((*(volatile struct SOUND_YM *)YM_BAS))
317
318 /* TT SCSI DMA */
319
320 #define TT_SCSI_DMA_BAS (0xffff8700)
321 struct TT_DMA {
322 u_char char_dummy0;
323 u_char dma_addr_hi;
324 u_char char_dummy1;
325 u_char dma_addr_hmd;
326 u_char char_dummy2;
327 u_char dma_addr_lmd;
328 u_char char_dummy3;
329 u_char dma_addr_lo;
330 u_char char_dummy4;
331 u_char dma_cnt_hi;
332 u_char char_dummy5;
333 u_char dma_cnt_hmd;
334 u_char char_dummy6;
335 u_char dma_cnt_lmd;
336 u_char char_dummy7;
337 u_char dma_cnt_lo;
338 u_long dma_restdata;
339 u_short dma_ctrl;
340 };
341 #define tt_scsi_dma ((*(volatile struct TT_DMA *)TT_SCSI_DMA_BAS))
342
343 /* TT SCSI Controller 5380 */
344
345 #define TT_5380_BAS (0xffff8781)
346 struct TT_5380 {
347 u_char scsi_data;
348 u_char char_dummy1;
349 u_char scsi_icr;
350 u_char char_dummy2;
351 u_char scsi_mode;
352 u_char char_dummy3;
353 u_char scsi_tcr;
354 u_char char_dummy4;
355 u_char scsi_idstat;
356 u_char char_dummy5;
357 u_char scsi_dmastat;
358 u_char char_dummy6;
359 u_char scsi_targrcv;
360 u_char char_dummy7;
361 u_char scsi_inircv;
362 };
363 #define tt_scsi ((*(volatile struct TT_5380 *)TT_5380_BAS))
364 #define tt_scsi_regp ((volatile char *)TT_5380_BAS)
365
366
367 /*
368 ** Falcon DMA Sound Subsystem
369 */
370
371 #define MATRIX_BASE (0xffff8930)
372 struct MATRIX
373 {
374 u_short source;
375 u_short destination;
376 u_char external_frequency_divider;
377 u_char internal_frequency_divider;
378 };
379 #define matrix (*(volatile struct MATRIX *)MATRIX_BASE)
380
381 #define CODEC_BASE (0xffff8936)
382 struct CODEC
383 {
384 u_char tracks;
385 u_char input_source;
386 #define CODEC_SOURCE_ADC 1
387 #define CODEC_SOURCE_MATRIX 2
388 u_char adc_source;
389 #define ADC_SOURCE_RIGHT_PSG 1
390 #define ADC_SOURCE_LEFT_PSG 2
391 u_char gain;
392 #define CODEC_GAIN_RIGHT 0x0f
393 #define CODEC_GAIN_LEFT 0xf0
394 u_char attenuation;
395 #define CODEC_ATTENUATION_RIGHT 0x0f
396 #define CODEC_ATTENUATION_LEFT 0xf0
397 u_char unused1;
398 u_char status;
399 #define CODEC_OVERFLOW_RIGHT 1
400 #define CODEC_OVERFLOW_LEFT 2
401 u_char unused2, unused3, unused4, unused5;
402 u_char gpio_directions;
403 #define GPIO_IN 0
404 #define GPIO_OUT 1
405 u_char unused6;
406 u_char gpio_data;
407 };
408 #define codec (*(volatile struct CODEC *)CODEC_BASE)
409
410 /*
411 ** Falcon Blitter
412 */
413
414 #define BLT_BAS (0xffff8a00)
415
416 struct BLITTER
417 {
418 u_short halftone[16];
419 u_short src_x_inc;
420 u_short src_y_inc;
421 u_long src_address;
422 u_short endmask1;
423 u_short endmask2;
424 u_short endmask3;
425 u_short dst_x_inc;
426 u_short dst_y_inc;
427 u_long dst_address;
428 u_short wd_per_line;
429 u_short ln_per_bb;
430 u_short hlf_op_reg;
431 u_short log_op_reg;
432 u_short lin_nm_reg;
433 u_short skew_reg;
434 };
435 # define blitter ((*(volatile struct BLITTER *)BLT_BAS))
436
437
438 /*
439 ** SCC Z8530
440 */
441
442 #define SCC_BAS (0xffff8c81)
443 struct SCC
444 {
445 u_char cha_a_ctrl;
446 u_char char_dummy1;
447 u_char cha_a_data;
448 u_char char_dummy2;
449 u_char cha_b_ctrl;
450 u_char char_dummy3;
451 u_char cha_b_data;
452 };
453 # define scc ((*(volatile struct SCC*)SCC_BAS))
454
455 /* The ESCC (Z85230) in an Atari ST. The channels are reversed! */
456 # define st_escc ((*(volatile struct SCC*)0xfffffa31))
457 # define st_escc_dsr ((*(volatile char *)0xfffffa39))
458
459 /* TT SCC DMA Controller (same chip as SCSI DMA) */
460
461 #define TT_SCC_DMA_BAS (0xffff8c00)
462 #define tt_scc_dma ((*(volatile struct TT_DMA *)TT_SCC_DMA_BAS))
463
464 /*
465 ** VIDEL Palette Register
466 */
467
468 #define FPL_BAS (0xffff9800)
469 struct VIDEL_PALETTE
470 {
471 u_long reg[256];
472 };
473 # define videl_palette ((*(volatile struct VIDEL_PALETTE*)FPL_BAS))
474
475
476 /*
477 ** Falcon DSP Host Interface
478 */
479
480 #define DSP56K_HOST_INTERFACE_BASE (0xffffa200)
481 struct DSP56K_HOST_INTERFACE {
482 u_char icr;
483 #define DSP56K_ICR_RREQ 0x01
484 #define DSP56K_ICR_TREQ 0x02
485 #define DSP56K_ICR_HF0 0x08
486 #define DSP56K_ICR_HF1 0x10
487 #define DSP56K_ICR_HM0 0x20
488 #define DSP56K_ICR_HM1 0x40
489 #define DSP56K_ICR_INIT 0x80
490
491 u_char cvr;
492 #define DSP56K_CVR_HV_MASK 0x1f
493 #define DSP56K_CVR_HC 0x80
494
495 u_char isr;
496 #define DSP56K_ISR_RXDF 0x01
497 #define DSP56K_ISR_TXDE 0x02
498 #define DSP56K_ISR_TRDY 0x04
499 #define DSP56K_ISR_HF2 0x08
500 #define DSP56K_ISR_HF3 0x10
501 #define DSP56K_ISR_DMA 0x40
502 #define DSP56K_ISR_HREQ 0x80
503
504 u_char ivr;
505
506 union {
507 u_char b[4];
508 u_short w[2];
509 u_long l;
510 } data;
511 };
512 #define dsp56k_host_interface ((*(volatile struct DSP56K_HOST_INTERFACE *)DSP56K_HOST_INTERFACE_BASE))
513
514 /*
515 ** MFP 68901
516 */
517
518 #define MFP_BAS (0xfffffa01)
519 struct MFP
520 {
521 u_char par_dt_reg;
522 u_char char_dummy1;
523 u_char active_edge;
524 u_char char_dummy2;
525 u_char data_dir;
526 u_char char_dummy3;
527 u_char int_en_a;
528 u_char char_dummy4;
529 u_char int_en_b;
530 u_char char_dummy5;
531 u_char int_pn_a;
532 u_char char_dummy6;
533 u_char int_pn_b;
534 u_char char_dummy7;
535 u_char int_sv_a;
536 u_char char_dummy8;
537 u_char int_sv_b;
538 u_char char_dummy9;
539 u_char int_mk_a;
540 u_char char_dummy10;
541 u_char int_mk_b;
542 u_char char_dummy11;
543 u_char vec_adr;
544 u_char char_dummy12;
545 u_char tim_ct_a;
546 u_char char_dummy13;
547 u_char tim_ct_b;
548 u_char char_dummy14;
549 u_char tim_ct_cd;
550 u_char char_dummy15;
551 u_char tim_dt_a;
552 u_char char_dummy16;
553 u_char tim_dt_b;
554 u_char char_dummy17;
555 u_char tim_dt_c;
556 u_char char_dummy18;
557 u_char tim_dt_d;
558 u_char char_dummy19;
559 u_char sync_char;
560 u_char char_dummy20;
561 u_char usart_ctr;
562 u_char char_dummy21;
563 u_char rcv_stat;
564 u_char char_dummy22;
565 u_char trn_stat;
566 u_char char_dummy23;
567 u_char usart_dta;
568 };
569 # define mfp ((*(volatile struct MFP*)MFP_BAS))
570
571 /* TT's second MFP */
572
573 #define TT_MFP_BAS (0xfffffa81)
574 # define tt_mfp ((*(volatile struct MFP*)TT_MFP_BAS))
575
576
577 /* TT System Control Unit */
578
579 #define TT_SCU_BAS (0xffff8e01)
580 struct TT_SCU {
581 u_char sys_mask;
582 u_char char_dummy1;
583 u_char sys_stat;
584 u_char char_dummy2;
585 u_char softint;
586 u_char char_dummy3;
587 u_char vmeint;
588 u_char char_dummy4;
589 u_char gp_reg1;
590 u_char char_dummy5;
591 u_char gp_reg2;
592 u_char char_dummy6;
593 u_char vme_mask;
594 u_char char_dummy7;
595 u_char vme_stat;
596 };
597 #define tt_scu ((*(volatile struct TT_SCU *)TT_SCU_BAS))
598
599 /* TT real time clock */
600
601 #define TT_RTC_BAS (0xffff8961)
602 struct TT_RTC {
603 u_char regsel;
604 u_char dummy;
605 u_char data;
606 };
607 #define tt_rtc ((*(volatile struct TT_RTC *)TT_RTC_BAS))
608
609
610 /*
611 ** ACIA 6850
612 */
613 /* constants for the ACIA registers */
614
615 /* baudrate selection and reset (Baudrate = clock/factor) */
616 #define ACIA_DIV1 0
617 #define ACIA_DIV16 1
618 #define ACIA_DIV64 2
619 #define ACIA_RESET 3
620
621 /* character format */
622 #define ACIA_D7E2S (0<<2) /* 7 data, even parity, 2 stop */
623 #define ACIA_D7O2S (1<<2) /* 7 data, odd parity, 2 stop */
624 #define ACIA_D7E1S (2<<2) /* 7 data, even parity, 1 stop */
625 #define ACIA_D7O1S (3<<2) /* 7 data, odd parity, 1 stop */
626 #define ACIA_D8N2S (4<<2) /* 8 data, no parity, 2 stop */
627 #define ACIA_D8N1S (5<<2) /* 8 data, no parity, 1 stop */
628 #define ACIA_D8E1S (6<<2) /* 8 data, even parity, 1 stop */
629 #define ACIA_D8O1S (7<<2) /* 8 data, odd parity, 1 stop */
630
631 /* transmit control */
632 #define ACIA_RLTID (0<<5) /* RTS low, TxINT disabled */
633 #define ACIA_RLTIE (1<<5) /* RTS low, TxINT enabled */
634 #define ACIA_RHTID (2<<5) /* RTS high, TxINT disabled */
635 #define ACIA_RLTIDSB (3<<5) /* RTS low, TxINT disabled, send break */
636
637 /* receive control */
638 #define ACIA_RID (0<<7) /* RxINT disabled */
639 #define ACIA_RIE (1<<7) /* RxINT enabled */
640
641 /* status fields of the ACIA */
642 #define ACIA_RDRF 1 /* Receive Data Register Full */
643 #define ACIA_TDRE (1<<1) /* Transmit Data Register Empty */
644 #define ACIA_DCD (1<<2) /* Data Carrier Detect */
645 #define ACIA_CTS (1<<3) /* Clear To Send */
646 #define ACIA_FE (1<<4) /* Framing Error */
647 #define ACIA_OVRN (1<<5) /* Receiver Overrun */
648 #define ACIA_PE (1<<6) /* Parity Error */
649 #define ACIA_IRQ (1<<7) /* Interrupt Request */
650
651 #define ACIA_BAS (0xfffffc00)
652 struct ACIA
653 {
654 u_char key_ctrl;
655 u_char char_dummy1;
656 u_char key_data;
657 u_char char_dummy2;
658 u_char mid_ctrl;
659 u_char char_dummy3;
660 u_char mid_data;
661 };
662 # define acia ((*(volatile struct ACIA*)ACIA_BAS))
663
664 #define TT_DMASND_BAS (0xffff8900)
665 struct TT_DMASND {
666 u_char int_ctrl; /* Falcon: Interrupt control */
667 u_char ctrl;
668 u_char pad2;
669 u_char bas_hi;
670 u_char pad3;
671 u_char bas_mid;
672 u_char pad4;
673 u_char bas_low;
674 u_char pad5;
675 u_char addr_hi;
676 u_char pad6;
677 u_char addr_mid;
678 u_char pad7;
679 u_char addr_low;
680 u_char pad8;
681 u_char end_hi;
682 u_char pad9;
683 u_char end_mid;
684 u_char pad10;
685 u_char end_low;
686 u_char pad11[12];
687 u_char track_select; /* Falcon */
688 u_char mode;
689 u_char pad12[14];
690 /* Falcon only: */
691 u_short cbar_src;
692 u_short cbar_dst;
693 u_char ext_div;
694 u_char int_div;
695 u_char rec_track_select;
696 u_char dac_src;
697 u_char adc_src;
698 u_char input_gain;
699 u_short output_atten;
700 };
701 # define tt_dmasnd ((*(volatile struct TT_DMASND *)TT_DMASND_BAS))
702
703 #define DMASND_MFP_INT_REPLAY 0x01
704 #define DMASND_MFP_INT_RECORD 0x02
705 #define DMASND_TIMERA_INT_REPLAY 0x04
706 #define DMASND_TIMERA_INT_RECORD 0x08
707
708 #define DMASND_CTRL_OFF 0x00
709 #define DMASND_CTRL_ON 0x01
710 #define DMASND_CTRL_REPEAT 0x02
711 #define DMASND_CTRL_RECORD_ON 0x10
712 #define DMASND_CTRL_RECORD_OFF 0x00
713 #define DMASND_CTRL_RECORD_REPEAT 0x20
714 #define DMASND_CTRL_SELECT_REPLAY 0x00
715 #define DMASND_CTRL_SELECT_RECORD 0x80
716 #define DMASND_MODE_MONO 0x80
717 #define DMASND_MODE_STEREO 0x00
718 #define DMASND_MODE_8BIT 0x00
719 #define DMASND_MODE_16BIT 0x40 /* Falcon only */
720 #define DMASND_MODE_6KHZ 0x00 /* Falcon: mute */
721 #define DMASND_MODE_12KHZ 0x01
722 #define DMASND_MODE_25KHZ 0x02
723 #define DMASND_MODE_50KHZ 0x03
724
725
726 #define DMASNDSetBase(bufstart) \
727 do { \
728 tt_dmasnd.bas_hi = (unsigned char)(((bufstart) & 0xff0000) >> 16); \
729 tt_dmasnd.bas_mid = (unsigned char)(((bufstart) & 0x00ff00) >> 8); \
730 tt_dmasnd.bas_low = (unsigned char) ((bufstart) & 0x0000ff); \
731 } while( 0 )
732
733 #define DMASNDGetAdr() ((tt_dmasnd.addr_hi << 16) + \
734 (tt_dmasnd.addr_mid << 8) + \
735 (tt_dmasnd.addr_low))
736
737 #define DMASNDSetEnd(bufend) \
738 do { \
739 tt_dmasnd.end_hi = (unsigned char)(((bufend) & 0xff0000) >> 16); \
740 tt_dmasnd.end_mid = (unsigned char)(((bufend) & 0x00ff00) >> 8); \
741 tt_dmasnd.end_low = (unsigned char) ((bufend) & 0x0000ff); \
742 } while( 0 )
743
744
745 #define TT_MICROWIRE_BAS (0xffff8922)
746 struct TT_MICROWIRE {
747 u_short data;
748 u_short mask;
749 };
750 # define tt_microwire ((*(volatile struct TT_MICROWIRE *)TT_MICROWIRE_BAS))
751
752 #define MW_LM1992_ADDR 0x0400
753
754 #define MW_LM1992_VOLUME(dB) \
755 (0x0c0 | ((dB) < -80 ? 0 : (dB) > 0 ? 40 : (((dB) + 80) / 2)))
756 #define MW_LM1992_BALLEFT(dB) \
757 (0x140 | ((dB) < -40 ? 0 : (dB) > 0 ? 20 : (((dB) + 40) / 2)))
758 #define MW_LM1992_BALRIGHT(dB) \
759 (0x100 | ((dB) < -40 ? 0 : (dB) > 0 ? 20 : (((dB) + 40) / 2)))
760 #define MW_LM1992_TREBLE(dB) \
761 (0x080 | ((dB) < -12 ? 0 : (dB) > 12 ? 12 : (((dB) / 2) + 6)))
762 #define MW_LM1992_BASS(dB) \
763 (0x040 | ((dB) < -12 ? 0 : (dB) > 12 ? 12 : (((dB) / 2) + 6)))
764
765 #define MW_LM1992_PSG_LOW 0x000
766 #define MW_LM1992_PSG_HIGH 0x001
767 #define MW_LM1992_PSG_OFF 0x002
768
769 #define MSTE_RTC_BAS (0xfffffc21)
770
771 struct MSTE_RTC {
772 u_char sec_ones;
773 u_char dummy1;
774 u_char sec_tens;
775 u_char dummy2;
776 u_char min_ones;
777 u_char dummy3;
778 u_char min_tens;
779 u_char dummy4;
780 u_char hr_ones;
781 u_char dummy5;
782 u_char hr_tens;
783 u_char dummy6;
784 u_char weekday;
785 u_char dummy7;
786 u_char day_ones;
787 u_char dummy8;
788 u_char day_tens;
789 u_char dummy9;
790 u_char mon_ones;
791 u_char dummy10;
792 u_char mon_tens;
793 u_char dummy11;
794 u_char year_ones;
795 u_char dummy12;
796 u_char year_tens;
797 u_char dummy13;
798 u_char mode;
799 u_char dummy14;
800 u_char test;
801 u_char dummy15;
802 u_char reset;
803 };
804
805 #define mste_rtc ((*(volatile struct MSTE_RTC *)MSTE_RTC_BAS))
806
807 #endif /* linux/atarihw.h */
808
809