mirror of
https://github.com/reactos/wine.git
synced 2024-11-25 12:49:45 +00:00
721 lines
18 KiB
C
721 lines
18 KiB
C
/*
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* Emulation of processor ioports.
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*
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* Copyright 1995 Morten Welinder
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* Copyright 1998 Andreas Mohr, Ove Kaaven
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Known problems:
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- only a few ports are emulated.
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- real-time clock in "cmos" is bogus. A nifty alarm() setup could
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fix that, I guess.
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*/
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#include "config.h"
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#include <stdarg.h>
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#include <stdlib.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winnls.h"
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#include "winreg.h"
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#include "winternl.h"
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#include "dosexe.h"
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#include "vga.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(int);
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#if defined(linux) && defined(__i386__)
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# define DIRECT_IO_ACCESS
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#else
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# undef DIRECT_IO_ACCESS
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#endif /* linux && __i386__ */
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static struct {
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WORD countmax;
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BOOL16 byte_toggle; /* if TRUE, then hi byte has already been written */
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WORD latch;
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BOOL16 latched;
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BYTE ctrlbyte_ch;
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WORD oldval;
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} tmr_8253[3] = {
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{0xFFFF, FALSE, 0, FALSE, 0x36, 0},
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{0x0012, FALSE, 0, FALSE, 0x74, 0},
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{0x0001, FALSE, 0, FALSE, 0xB6, 0},
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};
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static int dummy_ctr = 0;
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static BYTE parport_8255[4] = {0x4f, 0x20, 0xff, 0xff};
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static BYTE cmosaddress;
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/* if you change anything here, use IO_FixCMOSCheckSum below to compute
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* the checksum and put the right values in.
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*/
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static BYTE cmosimage[64] =
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{
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0x27, 0x34, 0x31, 0x47, 0x16, 0x15, 0x00, 0x01,
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0x04, 0x94, 0x26, 0x02, 0x50, 0x80, 0x00, 0x00,
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0x40, 0xb1, 0x00, 0x9c, 0x01, 0x80, 0x02, 0x00,
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0x1c, 0x00, 0x00, 0xad, 0x02, 0x10, 0x00, 0x00,
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0x08, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x03, 0x19, /* last 2 bytes are checksum */
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0x00, 0x1c, 0x19, 0x81, 0x00, 0x0e, 0x00, 0x80,
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0x1b, 0x7b, 0x21, 0x00, 0x00, 0x00, 0x05, 0x5f
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};
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#if 0
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static void IO_FixCMOSCheckSum(void)
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{
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WORD sum = 0;
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int i;
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for (i=0x10; i < 0x2d; i++)
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sum += cmosimage[i];
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cmosimage[0x2e] = sum >> 8; /* yes, this IS hi byte !! */
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cmosimage[0x2f] = sum & 0xff;
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MESSAGE("calculated hi %02x, lo %02x\n", cmosimage[0x2e], cmosimage[0x2f]);
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}
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#endif
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#ifdef DIRECT_IO_ACCESS
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extern int iopl(int level);
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static char do_direct_port_access = -1;
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static char port_permissions[0x10000];
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#define IO_READ 1
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#define IO_WRITE 2
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#endif /* DIRECT_IO_ACCESS */
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#ifdef HAVE_PPDEV
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static int do_pp_port_access = -1; /* -1: uninitialized, 1: not available
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0: available);*/
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#endif
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static void set_timer_maxval(unsigned timer, unsigned maxval)
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{
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switch (timer) {
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case 0: /* System timer counter divisor */
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DOSVM_SetTimer(maxval);
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break;
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case 1: /* RAM refresh */
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FIXME("RAM refresh counter handling not implemented !\n");
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break;
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case 2: /* cassette & speaker */
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/* speaker on ? */
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if ((parport_8255[1] & 3) == 3)
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{
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TRACE("Beep (freq: %d) !\n", 1193180 / maxval );
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Beep(1193180 / maxval, 20);
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}
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break;
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}
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}
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/**********************************************************************
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* IO_port_init
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*/
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/* set_IO_permissions(int val1, int val)
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* Helper function for IO_port_init
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*/
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#ifdef DIRECT_IO_ACCESS
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static void set_IO_permissions(int val1, int val, char rw)
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{
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int j;
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if (val1 != -1) {
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if (val == -1) val = 0x3ff;
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for (j = val1; j <= val; j++)
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port_permissions[j] |= rw;
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do_direct_port_access = 1;
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val1 = -1;
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} else if (val != -1) {
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do_direct_port_access = 1;
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port_permissions[val] |= rw;
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}
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}
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/* do_IO_port_init_read_or_write(char* temp, char rw)
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* Helper function for IO_port_init
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*/
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static void do_IO_port_init_read_or_write(const WCHAR *str, char rw)
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{
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int val, val1;
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unsigned int i;
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WCHAR *end;
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static const WCHAR allW[] = {'a','l','l',0};
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if (!strcmpiW(str, allW))
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{
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for (i=0; i < sizeof(port_permissions); i++)
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port_permissions[i] |= rw;
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}
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else
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{
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val = -1;
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val1 = -1;
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while (*str)
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{
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switch(*str)
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{
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case ',':
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case ' ':
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case '\t':
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set_IO_permissions(val1, val, rw);
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val1 = -1;
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val = -1;
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str++;
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break;
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case '-':
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val1 = val;
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if (val1 == -1) val1 = 0;
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str++;
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break;
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default:
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if (isdigitW(*str))
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{
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val = strtoulW( str, &end, 0 );
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if (end == str)
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{
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val = -1;
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str++;
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}
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else str = end;
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}
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break;
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}
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}
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set_IO_permissions(val1, val, rw);
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}
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}
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static inline BYTE inb( WORD port )
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{
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BYTE b;
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__asm__ __volatile__( "inb %w1,%0" : "=a" (b) : "d" (port) );
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return b;
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}
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static inline WORD inw( WORD port )
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{
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WORD w;
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__asm__ __volatile__( "inw %w1,%0" : "=a" (w) : "d" (port) );
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return w;
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}
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static inline DWORD inl( WORD port )
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{
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DWORD dw;
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__asm__ __volatile__( "inl %w1,%0" : "=a" (dw) : "d" (port) );
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return dw;
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}
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static inline void outb( BYTE value, WORD port )
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{
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__asm__ __volatile__( "outb %b0,%w1" : : "a" (value), "d" (port) );
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}
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static inline void outw( WORD value, WORD port )
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{
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__asm__ __volatile__( "outw %w0,%w1" : : "a" (value), "d" (port) );
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}
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static inline void outl( DWORD value, WORD port )
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{
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__asm__ __volatile__( "outl %0,%w1" : : "a" (value), "d" (port) );
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}
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static void IO_port_init(void)
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{
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char tmp[1024];
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HANDLE root, hkey;
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DWORD dummy;
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OBJECT_ATTRIBUTES attr;
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UNICODE_STRING nameW;
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static const WCHAR portsW[] = {'S','o','f','t','w','a','r','e','\\',
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'W','i','n','e','\\','V','D','M','\\','P','o','r','t','s',0};
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static const WCHAR readW[] = {'r','e','a','d',0};
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static const WCHAR writeW[] = {'w','r','i','t','e',0};
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do_direct_port_access = 0;
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/* Can we do that? */
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if (!iopl(3))
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{
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iopl(0);
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RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
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attr.Length = sizeof(attr);
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attr.RootDirectory = root;
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attr.ObjectName = &nameW;
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attr.Attributes = 0;
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attr.SecurityDescriptor = NULL;
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attr.SecurityQualityOfService = NULL;
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RtlInitUnicodeString( &nameW, portsW );
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/* @@ Wine registry key: HKCU\Software\Wine\VDM\Ports */
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if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
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{
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RtlInitUnicodeString( &nameW, readW );
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if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
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{
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WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
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do_IO_port_init_read_or_write(str, IO_READ);
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}
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RtlInitUnicodeString( &nameW, writeW );
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if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
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{
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WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
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do_IO_port_init_read_or_write(str, IO_WRITE);
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}
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NtClose( hkey );
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}
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NtClose( root );
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}
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}
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#endif /* DIRECT_IO_ACCESS */
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/**********************************************************************
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* inport (WINEDOS.@)
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*
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* Note: The size argument has to be handled correctly _externally_
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* (as we always return a DWORD)
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*/
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DWORD WINAPI DOSVM_inport( int port, int size )
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{
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DWORD res = ~0U;
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TRACE("%d-byte value from port 0x%04x\n", size, port );
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#ifdef HAVE_PPDEV
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if (do_pp_port_access == -1) do_pp_port_access =IO_pp_init();
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if ((do_pp_port_access == 0 ) && (size == 1))
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{
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if (!IO_pp_inp(port,&res)) return res;
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}
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#endif
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#ifdef DIRECT_IO_ACCESS
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if (do_direct_port_access == -1) IO_port_init();
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if ((do_direct_port_access)
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/* Make sure we have access to the port */
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&& (port_permissions[port] & IO_READ))
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{
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iopl(3);
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switch(size)
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{
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case 1: res = inb( port ); break;
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case 2: res = inw( port ); break;
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case 4: res = inl( port ); break;
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}
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iopl(0);
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return res;
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}
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#endif
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switch (port)
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{
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case 0x40:
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case 0x41:
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case 0x42:
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{
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BYTE chan = port & 3;
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WORD tempval = 0;
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if (tmr_8253[chan].latched)
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tempval = tmr_8253[chan].latch;
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else
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{
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dummy_ctr -= 1 + (int)(10.0 * rand() / (RAND_MAX + 1.0));
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if (chan == 0) /* System timer counter divisor */
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{
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/* FIXME: DOSVM_GetTimer() returns quite rigid values */
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tempval = dummy_ctr + (WORD)DOSVM_GetTimer();
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}
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else
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{
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/* FIXME: intelligent hardware timer emulation needed */
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tempval = dummy_ctr;
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}
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}
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switch ((tmr_8253[chan].ctrlbyte_ch & 0x30) >> 4)
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{
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case 0:
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res = 0; /* shouldn't happen? */
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break;
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case 1: /* read lo byte */
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res = (BYTE)tempval;
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tmr_8253[chan].latched = FALSE;
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break;
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case 3: /* read lo byte, then hi byte */
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tmr_8253[chan].byte_toggle ^= 1; /* toggle */
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if (tmr_8253[chan].byte_toggle)
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{
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res = (BYTE)tempval;
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break;
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}
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/* else [fall through if read hi byte !] */
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case 2: /* read hi byte */
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res = (BYTE)(tempval >> 8);
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tmr_8253[chan].latched = FALSE;
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break;
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}
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}
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break;
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case 0x60:
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res = DOSVM_Int09ReadScan(NULL);
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break;
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case 0x61:
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res = (DWORD)parport_8255[1];
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break;
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case 0x62:
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res = (DWORD)parport_8255[2];
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break;
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case 0x70:
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res = (DWORD)cmosaddress;
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break;
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case 0x71:
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res = (DWORD)cmosimage[cmosaddress & 0x3f];
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break;
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case 0x200:
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case 0x201:
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res = ~0U; /* no joystick */
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break;
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case 0x22a:
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case 0x22c:
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case 0x22e:
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res = (DWORD)SB_ioport_in( port );
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break;
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case 0x3ba:
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case 0x3c0:
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case 0x3c1:
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case 0x3c2:
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case 0x3c3:
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case 0x3c4:
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case 0x3c5:
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case 0x3c6:
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case 0x3c7:
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case 0x3c8:
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case 0x3c9:
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case 0x3ca:
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case 0x3cb:
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case 0x3cc:
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case 0x3cd:
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case 0x3ce:
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case 0x3cf:
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case 0x3d0:
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case 0x3d1:
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case 0x3d2:
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case 0x3d3:
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case 0x3d4:
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case 0x3d5:
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case 0x3d6:
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case 0x3d7:
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case 0x3d8:
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case 0x3d9:
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case 0x3da:
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case 0x3db:
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case 0x3dc:
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case 0x3dd:
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case 0x3de:
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case 0x3df:
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if(size > 1)
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FIXME("Trying to read more than one byte from VGA!\n");
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res = (DWORD)VGA_ioport_in( port );
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break;
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case 0x00:
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case 0x01:
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case 0x02:
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case 0x03:
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|
case 0x04:
|
|
case 0x05:
|
|
case 0x06:
|
|
case 0x07:
|
|
case 0xC0:
|
|
case 0xC2:
|
|
case 0xC4:
|
|
case 0xC6:
|
|
case 0xC8:
|
|
case 0xCA:
|
|
case 0xCC:
|
|
case 0xCE:
|
|
case 0x87:
|
|
case 0x83:
|
|
case 0x81:
|
|
case 0x82:
|
|
case 0x8B:
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|
case 0x89:
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|
case 0x8A:
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|
case 0x487:
|
|
case 0x483:
|
|
case 0x481:
|
|
case 0x482:
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|
case 0x48B:
|
|
case 0x489:
|
|
case 0x48A:
|
|
case 0x08:
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|
case 0xD0:
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|
case 0x0D:
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case 0xDA:
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res = (DWORD)DMA_ioport_in( port );
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break;
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default:
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WARN("Direct I/O read attempted from port %x\n", port);
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break;
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}
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return res;
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|
}
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|
|
|
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/**********************************************************************
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|
* outport (WINEDOS.@)
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|
*/
|
|
void WINAPI DOSVM_outport( int port, int size, DWORD value )
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|
{
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TRACE("IO: 0x%lx (%d-byte value) to port 0x%04x\n", value, size, port );
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|
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#ifdef HAVE_PPDEV
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if (do_pp_port_access == -1) do_pp_port_access = IO_pp_init();
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if ((do_pp_port_access == 0) && (size == 1))
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{
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if (!IO_pp_outp(port,&value)) return;
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}
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#endif
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|
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#ifdef DIRECT_IO_ACCESS
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|
|
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if (do_direct_port_access == -1) IO_port_init();
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if ((do_direct_port_access)
|
|
/* Make sure we have access to the port */
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|
&& (port_permissions[port] & IO_WRITE))
|
|
{
|
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iopl(3);
|
|
switch(size)
|
|
{
|
|
case 1: outb( LOBYTE(value), port ); break;
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|
case 2: outw( LOWORD(value), port ); break;
|
|
case 4: outl( value, port ); break;
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}
|
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iopl(0);
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return;
|
|
}
|
|
#endif
|
|
|
|
switch (port)
|
|
{
|
|
case 0x20:
|
|
DOSVM_PIC_ioport_out( port, (BYTE)value );
|
|
break;
|
|
case 0x40:
|
|
case 0x41:
|
|
case 0x42:
|
|
{
|
|
BYTE chan = port & 3;
|
|
|
|
/* we need to get the oldval before any lo/hi byte change has been made */
|
|
if (((tmr_8253[chan].ctrlbyte_ch & 0x30) != 0x30) ||
|
|
!tmr_8253[chan].byte_toggle)
|
|
tmr_8253[chan].oldval = tmr_8253[chan].countmax;
|
|
switch ((tmr_8253[chan].ctrlbyte_ch & 0x30) >> 4)
|
|
{
|
|
case 0:
|
|
break; /* shouldn't happen? */
|
|
case 1: /* write lo byte */
|
|
tmr_8253[chan].countmax =
|
|
(tmr_8253[chan].countmax & 0xff00) | (BYTE)value;
|
|
break;
|
|
case 3: /* write lo byte, then hi byte */
|
|
tmr_8253[chan].byte_toggle ^= TRUE; /* toggle */
|
|
if (tmr_8253[chan].byte_toggle)
|
|
{
|
|
tmr_8253[chan].countmax =
|
|
(tmr_8253[chan].countmax & 0xff00) | (BYTE)value;
|
|
break;
|
|
}
|
|
/* else [fall through if write hi byte !] */
|
|
case 2: /* write hi byte */
|
|
tmr_8253[chan].countmax =
|
|
(tmr_8253[chan].countmax & 0x00ff) | ((BYTE)value << 8);
|
|
break;
|
|
}
|
|
/* if programming is finished and value has changed
|
|
then update to new value */
|
|
if ((((tmr_8253[chan].ctrlbyte_ch & 0x30) != 0x30) ||
|
|
!tmr_8253[chan].byte_toggle) &&
|
|
(tmr_8253[chan].countmax != tmr_8253[chan].oldval))
|
|
set_timer_maxval(chan, tmr_8253[chan].countmax);
|
|
}
|
|
break;
|
|
case 0x43:
|
|
{
|
|
BYTE chan = ((BYTE)value & 0xc0) >> 6;
|
|
/* ctrl byte for specific timer channel */
|
|
if (chan == 3)
|
|
{
|
|
FIXME("8254 timer readback not implemented yet\n");
|
|
break;
|
|
}
|
|
switch (((BYTE)value & 0x30) >> 4)
|
|
{
|
|
case 0: /* latch timer */
|
|
tmr_8253[chan].latched = TRUE;
|
|
dummy_ctr -= 1 + (int)(10.0 * rand() / (RAND_MAX + 1.0));
|
|
if (chan == 0) /* System timer divisor */
|
|
tmr_8253[chan].latch = dummy_ctr + (WORD)DOSVM_GetTimer();
|
|
else
|
|
{
|
|
/* FIXME: intelligent hardware timer emulation needed */
|
|
tmr_8253[chan].latch = dummy_ctr;
|
|
}
|
|
break;
|
|
case 3: /* write lo byte, then hi byte */
|
|
tmr_8253[chan].byte_toggle = FALSE; /* init */
|
|
/* fall through */
|
|
case 1: /* write lo byte only */
|
|
case 2: /* write hi byte only */
|
|
tmr_8253[chan].ctrlbyte_ch = (BYTE)value;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 0x61:
|
|
parport_8255[1] = (BYTE)value;
|
|
if ((((BYTE)parport_8255[1] & 3) == 3) && (tmr_8253[2].countmax != 1))
|
|
{
|
|
TRACE("Beep (freq: %d) !\n", 1193180 / tmr_8253[2].countmax);
|
|
Beep(1193180 / tmr_8253[2].countmax, 20);
|
|
}
|
|
break;
|
|
case 0x70:
|
|
cmosaddress = (BYTE)value & 0x7f;
|
|
break;
|
|
case 0x71:
|
|
cmosimage[cmosaddress & 0x3f] = (BYTE)value;
|
|
break;
|
|
case 0x226:
|
|
case 0x22c:
|
|
SB_ioport_out( port, (BYTE)value );
|
|
break;
|
|
case 0x3c0:
|
|
case 0x3c1:
|
|
case 0x3c2:
|
|
case 0x3c3:
|
|
case 0x3c4:
|
|
case 0x3c5:
|
|
case 0x3c6:
|
|
case 0x3c7:
|
|
case 0x3c8:
|
|
case 0x3c9:
|
|
case 0x3ca:
|
|
case 0x3cb:
|
|
case 0x3cc:
|
|
case 0x3cd:
|
|
case 0x3ce:
|
|
case 0x3cf:
|
|
case 0x3d0:
|
|
case 0x3d1:
|
|
case 0x3d2:
|
|
case 0x3d3:
|
|
case 0x3d4:
|
|
case 0x3d5:
|
|
case 0x3d6:
|
|
case 0x3d7:
|
|
case 0x3d8:
|
|
case 0x3d9:
|
|
case 0x3da:
|
|
case 0x3db:
|
|
case 0x3dc:
|
|
case 0x3dd:
|
|
case 0x3de:
|
|
case 0x3df:
|
|
VGA_ioport_out( port, LOBYTE(value) );
|
|
if(size > 1) {
|
|
VGA_ioport_out( port+1, HIBYTE(value) );
|
|
if(size > 2) {
|
|
VGA_ioport_out( port+2, LOBYTE(HIWORD(value)) );
|
|
VGA_ioport_out( port+3, HIBYTE(HIWORD(value)) );
|
|
}
|
|
}
|
|
break;
|
|
case 0x00:
|
|
case 0x01:
|
|
case 0x02:
|
|
case 0x03:
|
|
case 0x04:
|
|
case 0x05:
|
|
case 0x06:
|
|
case 0x07:
|
|
case 0xC0:
|
|
case 0xC2:
|
|
case 0xC4:
|
|
case 0xC6:
|
|
case 0xC8:
|
|
case 0xCA:
|
|
case 0xCC:
|
|
case 0xCE:
|
|
case 0x87:
|
|
case 0x83:
|
|
case 0x81:
|
|
case 0x82:
|
|
case 0x8B:
|
|
case 0x89:
|
|
case 0x8A:
|
|
case 0x487:
|
|
case 0x483:
|
|
case 0x481:
|
|
case 0x482:
|
|
case 0x48B:
|
|
case 0x489:
|
|
case 0x48A:
|
|
case 0x08:
|
|
case 0xD0:
|
|
case 0x0B:
|
|
case 0xD6:
|
|
case 0x0A:
|
|
case 0xD4:
|
|
case 0x0F:
|
|
case 0xDE:
|
|
case 0x09:
|
|
case 0xD2:
|
|
case 0x0C:
|
|
case 0xD8:
|
|
case 0x0D:
|
|
case 0xDA:
|
|
case 0x0E:
|
|
case 0xDC:
|
|
DMA_ioport_out( port, (BYTE)value );
|
|
break;
|
|
default:
|
|
WARN("Direct I/O write attempted to port %x\n", port );
|
|
break;
|
|
}
|
|
}
|