quartz: Remove dead code from DSoundRender.
[wine/wine64.git] / dlls / winedos / ioports.c
blobe9f4f7f148b71f22590ab8bad596ddbf6d802c77
1 /*
2 * Emulation of processor ioports.
4 * Copyright 1995 Morten Welinder
5 * Copyright 1998 Andreas Mohr, Ove Kaaven
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 /* Known problems:
23 - only a few ports are emulated.
24 - real-time clock in "cmos" is bogus. A nifty alarm() setup could
25 fix that, I guess.
28 #include "config.h"
30 #include <stdarg.h>
31 #include <stdlib.h>
33 #include "windef.h"
34 #include "winbase.h"
35 #include "winnls.h"
36 #include "winreg.h"
37 #include "winternl.h"
38 #include "dosexe.h"
39 #include "vga.h"
40 #include "wine/unicode.h"
41 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(int);
45 #if defined(linux) && defined(__i386__)
46 # define DIRECT_IO_ACCESS
47 #else
48 # undef DIRECT_IO_ACCESS
49 #endif /* linux && __i386__ */
51 static struct {
52 WORD countmax;
53 BOOL16 byte_toggle; /* if TRUE, then hi byte has already been written */
54 WORD latch;
55 BOOL16 latched;
56 BYTE ctrlbyte_ch;
57 WORD oldval;
58 } tmr_8253[3] = {
59 {0xFFFF, FALSE, 0, FALSE, 0x36, 0},
60 {0x0012, FALSE, 0, FALSE, 0x74, 0},
61 {0x0001, FALSE, 0, FALSE, 0xB6, 0},
64 static int dummy_ctr = 0;
66 static BYTE parport_8255[4] = {0x4f, 0x20, 0xff, 0xff};
68 static BYTE cmosaddress;
70 /* if you change anything here, use IO_FixCMOSCheckSum below to compute
71 * the checksum and put the right values in.
73 static BYTE cmosimage[64] =
75 0x27, 0x34, 0x31, 0x47, 0x16, 0x15, 0x00, 0x01,
76 0x04, 0x94, 0x26, 0x02, 0x50, 0x80, 0x00, 0x00,
77 0x40, 0xb1, 0x00, 0x9c, 0x01, 0x80, 0x02, 0x00,
78 0x1c, 0x00, 0x00, 0xad, 0x02, 0x10, 0x00, 0x00,
79 0x08, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x00,
80 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x03, 0x19, /* last 2 bytes are checksum */
81 0x00, 0x1c, 0x19, 0x81, 0x00, 0x0e, 0x00, 0x80,
82 0x1b, 0x7b, 0x21, 0x00, 0x00, 0x00, 0x05, 0x5f
85 #if 0
86 static void IO_FixCMOSCheckSum(void)
88 WORD sum = 0;
89 int i;
91 for (i=0x10; i < 0x2d; i++)
92 sum += cmosimage[i];
93 cmosimage[0x2e] = sum >> 8; /* yes, this IS hi byte !! */
94 cmosimage[0x2f] = sum & 0xff;
95 MESSAGE("calculated hi %02x, lo %02x\n", cmosimage[0x2e], cmosimage[0x2f]);
97 #endif
99 #ifdef DIRECT_IO_ACCESS
101 extern int iopl(int level);
102 static char do_direct_port_access = -1;
103 static char port_permissions[0x10000];
105 #define IO_READ 1
106 #define IO_WRITE 2
108 #endif /* DIRECT_IO_ACCESS */
110 #ifdef HAVE_PPDEV
111 static int do_pp_port_access = -1; /* -1: uninitialized, 1: not available
112 0: available);*/
113 #endif
115 static void set_timer_maxval(unsigned timer, unsigned maxval)
117 switch (timer) {
118 case 0: /* System timer counter divisor */
119 DOSVM_SetTimer(maxval);
120 break;
121 case 1: /* RAM refresh */
122 FIXME("RAM refresh counter handling not implemented !\n");
123 break;
124 case 2: /* cassette & speaker */
125 /* speaker on ? */
126 if ((parport_8255[1] & 3) == 3)
128 TRACE("Beep (freq: %d) !\n", 1193180 / maxval );
129 Beep(1193180 / maxval, 20);
131 break;
136 /**********************************************************************
137 * IO_port_init
140 /* set_IO_permissions(int val1, int val)
141 * Helper function for IO_port_init
143 #ifdef DIRECT_IO_ACCESS
144 static void set_IO_permissions(int val1, int val, char rw)
146 int j;
147 if (val1 != -1) {
148 if (val == -1) val = 0x3ff;
149 for (j = val1; j <= val; j++)
150 port_permissions[j] |= rw;
152 do_direct_port_access = 1;
154 val1 = -1;
155 } else if (val != -1) {
156 do_direct_port_access = 1;
158 port_permissions[val] |= rw;
163 /* do_IO_port_init_read_or_write(char* temp, char rw)
164 * Helper function for IO_port_init
167 static void do_IO_port_init_read_or_write(const WCHAR *str, char rw)
169 int val, val1;
170 unsigned int i;
171 WCHAR *end;
172 static const WCHAR allW[] = {'a','l','l',0};
174 if (!strcmpiW(str, allW))
176 for (i=0; i < sizeof(port_permissions); i++)
177 port_permissions[i] |= rw;
179 else
181 val = -1;
182 val1 = -1;
183 while (*str)
185 switch(*str)
187 case ',':
188 case ' ':
189 case '\t':
190 set_IO_permissions(val1, val, rw);
191 val1 = -1;
192 val = -1;
193 str++;
194 break;
195 case '-':
196 val1 = val;
197 if (val1 == -1) val1 = 0;
198 str++;
199 break;
200 default:
201 if (isdigitW(*str))
203 val = strtoulW( str, &end, 0 );
204 if (end == str)
206 val = -1;
207 str++;
209 else str = end;
211 break;
214 set_IO_permissions(val1, val, rw);
218 static inline BYTE inb( WORD port )
220 BYTE b;
221 __asm__ __volatile__( "inb %w1,%0" : "=a" (b) : "d" (port) );
222 return b;
225 static inline WORD inw( WORD port )
227 WORD w;
228 __asm__ __volatile__( "inw %w1,%0" : "=a" (w) : "d" (port) );
229 return w;
232 static inline DWORD inl( WORD port )
234 DWORD dw;
235 __asm__ __volatile__( "inl %w1,%0" : "=a" (dw) : "d" (port) );
236 return dw;
239 static inline void outb( BYTE value, WORD port )
241 __asm__ __volatile__( "outb %b0,%w1" : : "a" (value), "d" (port) );
244 static inline void outw( WORD value, WORD port )
246 __asm__ __volatile__( "outw %w0,%w1" : : "a" (value), "d" (port) );
249 static inline void outl( DWORD value, WORD port )
251 __asm__ __volatile__( "outl %0,%w1" : : "a" (value), "d" (port) );
254 static void IO_port_init(void)
256 char tmp[1024];
257 HANDLE root, hkey;
258 DWORD dummy;
259 OBJECT_ATTRIBUTES attr;
260 UNICODE_STRING nameW;
262 static const WCHAR portsW[] = {'S','o','f','t','w','a','r','e','\\',
263 'W','i','n','e','\\','V','D','M','\\','P','o','r','t','s',0};
264 static const WCHAR readW[] = {'r','e','a','d',0};
265 static const WCHAR writeW[] = {'w','r','i','t','e',0};
267 do_direct_port_access = 0;
268 /* Can we do that? */
269 if (!iopl(3))
271 iopl(0);
273 RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
274 attr.Length = sizeof(attr);
275 attr.RootDirectory = root;
276 attr.ObjectName = &nameW;
277 attr.Attributes = 0;
278 attr.SecurityDescriptor = NULL;
279 attr.SecurityQualityOfService = NULL;
280 RtlInitUnicodeString( &nameW, portsW );
282 /* @@ Wine registry key: HKCU\Software\Wine\VDM\Ports */
283 if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
285 RtlInitUnicodeString( &nameW, readW );
286 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
288 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
289 do_IO_port_init_read_or_write(str, IO_READ);
291 RtlInitUnicodeString( &nameW, writeW );
292 if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
294 WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
295 do_IO_port_init_read_or_write(str, IO_WRITE);
297 NtClose( hkey );
299 NtClose( root );
303 #endif /* DIRECT_IO_ACCESS */
306 /**********************************************************************
307 * inport (WINEDOS.@)
309 * Note: The size argument has to be handled correctly _externally_
310 * (as we always return a DWORD)
312 DWORD WINAPI DOSVM_inport( int port, int size )
314 DWORD res = ~0U;
316 TRACE("%d-byte value from port 0x%04x\n", size, port );
318 #ifdef HAVE_PPDEV
319 if (do_pp_port_access == -1) do_pp_port_access =IO_pp_init();
320 if ((do_pp_port_access == 0 ) && (size == 1))
322 if (!IO_pp_inp(port,&res)) return res;
324 #endif
326 #ifdef DIRECT_IO_ACCESS
327 if (do_direct_port_access == -1) IO_port_init();
328 if ((do_direct_port_access)
329 /* Make sure we have access to the port */
330 && (port_permissions[port] & IO_READ))
332 iopl(3);
333 switch(size)
335 case 1: res = inb( port ); break;
336 case 2: res = inw( port ); break;
337 case 4: res = inl( port ); break;
339 iopl(0);
340 return res;
342 #endif
344 switch (port)
346 case 0x40:
347 case 0x41:
348 case 0x42:
350 BYTE chan = port & 3;
351 WORD tempval = 0;
352 if (tmr_8253[chan].latched)
353 tempval = tmr_8253[chan].latch;
354 else
356 dummy_ctr -= 1 + (int)(10.0 * rand() / (RAND_MAX + 1.0));
357 if (chan == 0) /* System timer counter divisor */
359 /* FIXME: DOSVM_GetTimer() returns quite rigid values */
360 tempval = dummy_ctr + (WORD)DOSVM_GetTimer();
362 else
364 /* FIXME: intelligent hardware timer emulation needed */
365 tempval = dummy_ctr;
369 switch ((tmr_8253[chan].ctrlbyte_ch & 0x30) >> 4)
371 case 0:
372 res = 0; /* shouldn't happen? */
373 break;
374 case 1: /* read lo byte */
375 res = (BYTE)tempval;
376 tmr_8253[chan].latched = FALSE;
377 break;
378 case 3: /* read lo byte, then hi byte */
379 tmr_8253[chan].byte_toggle ^= 1; /* toggle */
380 if (tmr_8253[chan].byte_toggle)
382 res = (BYTE)tempval;
383 break;
385 /* else [fall through if read hi byte !] */
386 case 2: /* read hi byte */
387 res = (BYTE)(tempval >> 8);
388 tmr_8253[chan].latched = FALSE;
389 break;
392 break;
393 case 0x60:
394 res = DOSVM_Int09ReadScan(NULL);
395 break;
396 case 0x61:
397 res = (DWORD)parport_8255[1];
398 break;
399 case 0x62:
400 res = (DWORD)parport_8255[2];
401 break;
402 case 0x70:
403 res = (DWORD)cmosaddress;
404 break;
405 case 0x71:
406 res = (DWORD)cmosimage[cmosaddress & 0x3f];
407 break;
408 case 0x200:
409 case 0x201:
410 res = ~0U; /* no joystick */
411 break;
412 case 0x22a:
413 case 0x22c:
414 case 0x22e:
415 res = (DWORD)SB_ioport_in( port );
416 break;
417 case 0x3ba:
418 case 0x3c0:
419 case 0x3c1:
420 case 0x3c2:
421 case 0x3c3:
422 case 0x3c4:
423 case 0x3c5:
424 case 0x3c6:
425 case 0x3c7:
426 case 0x3c8:
427 case 0x3c9:
428 case 0x3ca:
429 case 0x3cb:
430 case 0x3cc:
431 case 0x3cd:
432 case 0x3ce:
433 case 0x3cf:
434 case 0x3d0:
435 case 0x3d1:
436 case 0x3d2:
437 case 0x3d3:
438 case 0x3d4:
439 case 0x3d5:
440 case 0x3d6:
441 case 0x3d7:
442 case 0x3d8:
443 case 0x3d9:
444 case 0x3da:
445 case 0x3db:
446 case 0x3dc:
447 case 0x3dd:
448 case 0x3de:
449 case 0x3df:
450 if(size > 1)
451 FIXME("Trying to read more than one byte from VGA!\n");
452 res = (DWORD)VGA_ioport_in( port );
453 break;
454 case 0x00:
455 case 0x01:
456 case 0x02:
457 case 0x03:
458 case 0x04:
459 case 0x05:
460 case 0x06:
461 case 0x07:
462 case 0xC0:
463 case 0xC2:
464 case 0xC4:
465 case 0xC6:
466 case 0xC8:
467 case 0xCA:
468 case 0xCC:
469 case 0xCE:
470 case 0x87:
471 case 0x83:
472 case 0x81:
473 case 0x82:
474 case 0x8B:
475 case 0x89:
476 case 0x8A:
477 case 0x487:
478 case 0x483:
479 case 0x481:
480 case 0x482:
481 case 0x48B:
482 case 0x489:
483 case 0x48A:
484 case 0x08:
485 case 0xD0:
486 case 0x0D:
487 case 0xDA:
488 res = (DWORD)DMA_ioport_in( port );
489 break;
490 default:
491 WARN("Direct I/O read attempted from port %x\n", port);
492 break;
494 return res;
498 /**********************************************************************
499 * outport (WINEDOS.@)
501 void WINAPI DOSVM_outport( int port, int size, DWORD value )
503 TRACE("IO: 0x%x (%d-byte value) to port 0x%04x\n", value, size, port );
505 #ifdef HAVE_PPDEV
506 if (do_pp_port_access == -1) do_pp_port_access = IO_pp_init();
507 if ((do_pp_port_access == 0) && (size == 1))
509 if (!IO_pp_outp(port,&value)) return;
511 #endif
513 #ifdef DIRECT_IO_ACCESS
515 if (do_direct_port_access == -1) IO_port_init();
516 if ((do_direct_port_access)
517 /* Make sure we have access to the port */
518 && (port_permissions[port] & IO_WRITE))
520 iopl(3);
521 switch(size)
523 case 1: outb( LOBYTE(value), port ); break;
524 case 2: outw( LOWORD(value), port ); break;
525 case 4: outl( value, port ); break;
527 iopl(0);
528 return;
530 #endif
532 switch (port)
534 case 0x20:
535 DOSVM_PIC_ioport_out( port, (BYTE)value );
536 break;
537 case 0x40:
538 case 0x41:
539 case 0x42:
541 BYTE chan = port & 3;
543 /* we need to get the oldval before any lo/hi byte change has been made */
544 if (((tmr_8253[chan].ctrlbyte_ch & 0x30) != 0x30) ||
545 !tmr_8253[chan].byte_toggle)
546 tmr_8253[chan].oldval = tmr_8253[chan].countmax;
547 switch ((tmr_8253[chan].ctrlbyte_ch & 0x30) >> 4)
549 case 0:
550 break; /* shouldn't happen? */
551 case 1: /* write lo byte */
552 tmr_8253[chan].countmax =
553 (tmr_8253[chan].countmax & 0xff00) | (BYTE)value;
554 break;
555 case 3: /* write lo byte, then hi byte */
556 tmr_8253[chan].byte_toggle ^= TRUE; /* toggle */
557 if (tmr_8253[chan].byte_toggle)
559 tmr_8253[chan].countmax =
560 (tmr_8253[chan].countmax & 0xff00) | (BYTE)value;
561 break;
563 /* else [fall through if write hi byte !] */
564 case 2: /* write hi byte */
565 tmr_8253[chan].countmax =
566 (tmr_8253[chan].countmax & 0x00ff) | ((BYTE)value << 8);
567 break;
569 /* if programming is finished and value has changed
570 then update to new value */
571 if ((((tmr_8253[chan].ctrlbyte_ch & 0x30) != 0x30) ||
572 !tmr_8253[chan].byte_toggle) &&
573 (tmr_8253[chan].countmax != tmr_8253[chan].oldval))
574 set_timer_maxval(chan, tmr_8253[chan].countmax);
576 break;
577 case 0x43:
579 BYTE chan = ((BYTE)value & 0xc0) >> 6;
580 /* ctrl byte for specific timer channel */
581 if (chan == 3)
583 FIXME("8254 timer readback not implemented yet\n");
584 break;
586 switch (((BYTE)value & 0x30) >> 4)
588 case 0: /* latch timer */
589 tmr_8253[chan].latched = TRUE;
590 dummy_ctr -= 1 + (int)(10.0 * rand() / (RAND_MAX + 1.0));
591 if (chan == 0) /* System timer divisor */
592 tmr_8253[chan].latch = dummy_ctr + (WORD)DOSVM_GetTimer();
593 else
595 /* FIXME: intelligent hardware timer emulation needed */
596 tmr_8253[chan].latch = dummy_ctr;
598 break;
599 case 3: /* write lo byte, then hi byte */
600 tmr_8253[chan].byte_toggle = FALSE; /* init */
601 /* fall through */
602 case 1: /* write lo byte only */
603 case 2: /* write hi byte only */
604 tmr_8253[chan].ctrlbyte_ch = (BYTE)value;
605 break;
608 break;
609 case 0x61:
610 parport_8255[1] = (BYTE)value;
611 if (((parport_8255[1] & 3) == 3) && (tmr_8253[2].countmax != 1))
613 TRACE("Beep (freq: %d) !\n", 1193180 / tmr_8253[2].countmax);
614 Beep(1193180 / tmr_8253[2].countmax, 20);
616 break;
617 case 0x70:
618 cmosaddress = (BYTE)value & 0x7f;
619 break;
620 case 0x71:
621 cmosimage[cmosaddress & 0x3f] = (BYTE)value;
622 break;
623 case 0x226:
624 case 0x22c:
625 SB_ioport_out( port, (BYTE)value );
626 break;
627 case 0x3c0:
628 case 0x3c1:
629 case 0x3c2:
630 case 0x3c3:
631 case 0x3c4:
632 case 0x3c5:
633 case 0x3c6:
634 case 0x3c7:
635 case 0x3c8:
636 case 0x3c9:
637 case 0x3ca:
638 case 0x3cb:
639 case 0x3cc:
640 case 0x3cd:
641 case 0x3ce:
642 case 0x3cf:
643 case 0x3d0:
644 case 0x3d1:
645 case 0x3d2:
646 case 0x3d3:
647 case 0x3d4:
648 case 0x3d5:
649 case 0x3d6:
650 case 0x3d7:
651 case 0x3d8:
652 case 0x3d9:
653 case 0x3da:
654 case 0x3db:
655 case 0x3dc:
656 case 0x3dd:
657 case 0x3de:
658 case 0x3df:
659 VGA_ioport_out( port, LOBYTE(value) );
660 if(size > 1) {
661 VGA_ioport_out( port+1, HIBYTE(value) );
662 if(size > 2) {
663 VGA_ioport_out( port+2, LOBYTE(HIWORD(value)) );
664 VGA_ioport_out( port+3, HIBYTE(HIWORD(value)) );
667 break;
668 case 0x00:
669 case 0x01:
670 case 0x02:
671 case 0x03:
672 case 0x04:
673 case 0x05:
674 case 0x06:
675 case 0x07:
676 case 0xC0:
677 case 0xC2:
678 case 0xC4:
679 case 0xC6:
680 case 0xC8:
681 case 0xCA:
682 case 0xCC:
683 case 0xCE:
684 case 0x87:
685 case 0x83:
686 case 0x81:
687 case 0x82:
688 case 0x8B:
689 case 0x89:
690 case 0x8A:
691 case 0x487:
692 case 0x483:
693 case 0x481:
694 case 0x482:
695 case 0x48B:
696 case 0x489:
697 case 0x48A:
698 case 0x08:
699 case 0xD0:
700 case 0x0B:
701 case 0xD6:
702 case 0x0A:
703 case 0xD4:
704 case 0x0F:
705 case 0xDE:
706 case 0x09:
707 case 0xD2:
708 case 0x0C:
709 case 0xD8:
710 case 0x0D:
711 case 0xDA:
712 case 0x0E:
713 case 0xDC:
714 DMA_ioport_out( port, (BYTE)value );
715 break;
716 default:
717 WARN("Direct I/O write attempted to port %x\n", port );
718 break;