mirror of
https://github.com/reactos/wine.git
synced 2024-11-29 14:40:56 +00:00
570 lines
15 KiB
C
570 lines
15 KiB
C
/*
|
|
* Emulation of processor ioports.
|
|
*
|
|
* Copyright 1995 Morten Welinder
|
|
* Copyright 1998 Andreas Mohr, Ove Kaaven
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/* Known problems:
|
|
- only a few ports are emulated.
|
|
- real-time clock in "cmos" is bogus. A nifty alarm() setup could
|
|
fix that, I guess.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "winnls.h"
|
|
#include "winreg.h"
|
|
#include "winternl.h"
|
|
#include "callback.h"
|
|
#include "miscemu.h"
|
|
#include "wine/unicode.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(int);
|
|
|
|
static struct {
|
|
WORD countmax;
|
|
BOOL16 byte_toggle; /* if TRUE, then hi byte has already been written */
|
|
WORD latch;
|
|
BOOL16 latched;
|
|
BYTE ctrlbyte_ch;
|
|
WORD oldval;
|
|
} tmr_8253[3] = {
|
|
{0xFFFF, FALSE, 0, FALSE, 0x36, 0},
|
|
{0x0012, FALSE, 0, FALSE, 0x74, 0},
|
|
{0x0001, FALSE, 0, FALSE, 0xB6, 0},
|
|
};
|
|
|
|
static int dummy_ctr = 0;
|
|
|
|
static BYTE parport_8255[4] = {0x4f, 0x20, 0xff, 0xff};
|
|
|
|
static BYTE cmosaddress;
|
|
|
|
static BYTE cmosimage[64] =
|
|
{
|
|
0x27, 0x34, 0x31, 0x47, 0x16, 0x15, 0x00, 0x01,
|
|
0x04, 0x94, 0x26, 0x02, 0x50, 0x80, 0x00, 0x00,
|
|
0x40, 0xb1, 0x00, 0x9c, 0x01, 0x80, 0x02, 0x00,
|
|
0x1c, 0x00, 0x00, 0xad, 0x02, 0x10, 0x00, 0x00,
|
|
0x08, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x03, 0x19,
|
|
0x00, 0x1c, 0x19, 0x81, 0x00, 0x0e, 0x00, 0x80,
|
|
0x1b, 0x7b, 0x21, 0x00, 0x00, 0x00, 0x05, 0x5f
|
|
};
|
|
|
|
#if defined(linux) && defined(__i386__)
|
|
# define DIRECT_IO_ACCESS
|
|
#else
|
|
# undef DIRECT_IO_ACCESS
|
|
# undef PP_IO_ACCESS
|
|
#endif /* linux && __i386__ */
|
|
|
|
#ifdef HAVE_PPDEV
|
|
static int do_pp_port_access = -1; /* -1: uninitialized, 1: not available
|
|
0: available);*/
|
|
#endif
|
|
|
|
#ifdef DIRECT_IO_ACCESS
|
|
|
|
extern int iopl(int level);
|
|
static char do_direct_port_access = -1;
|
|
static char port_permissions[0x10000];
|
|
|
|
#define IO_READ 1
|
|
#define IO_WRITE 2
|
|
|
|
static void IO_FixCMOSCheckSum(void)
|
|
{
|
|
WORD sum = 0;
|
|
int i;
|
|
|
|
for (i=0x10; i < 0x2d; i++)
|
|
sum += cmosimage[i];
|
|
cmosimage[0x2e] = sum >> 8; /* yes, this IS hi byte !! */
|
|
cmosimage[0x2f] = sum & 0xff;
|
|
TRACE("calculated hi %02x, lo %02x\n", cmosimage[0x2e], cmosimage[0x2f]);
|
|
}
|
|
|
|
#endif /* DIRECT_IO_ACCESS */
|
|
|
|
static void set_timer_maxval(unsigned timer, unsigned maxval)
|
|
{
|
|
switch (timer) {
|
|
case 0: /* System timer counter divisor */
|
|
if (Dosvm.SetTimer) Dosvm.SetTimer(maxval);
|
|
break;
|
|
case 1: /* RAM refresh */
|
|
FIXME("RAM refresh counter handling not implemented !\n");
|
|
break;
|
|
case 2: /* cassette & speaker */
|
|
/* speaker on ? */
|
|
if (((BYTE)parport_8255[1] & 3) == 3)
|
|
{
|
|
TRACE("Beep (freq: %d) !\n", 1193180 / maxval );
|
|
Beep(1193180 / maxval, 20);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
* IO_port_init
|
|
*/
|
|
|
|
/* set_IO_permissions(int val1, int val)
|
|
* Helper function for IO_port_init
|
|
*/
|
|
#ifdef DIRECT_IO_ACCESS
|
|
static void set_IO_permissions(int val1, int val, char rw)
|
|
{
|
|
int j;
|
|
if (val1 != -1) {
|
|
if (val == -1) val = 0x3ff;
|
|
for (j = val1; j <= val; j++)
|
|
port_permissions[j] |= rw;
|
|
|
|
do_direct_port_access = 1;
|
|
|
|
val1 = -1;
|
|
} else if (val != -1) {
|
|
do_direct_port_access = 1;
|
|
|
|
port_permissions[val] |= rw;
|
|
}
|
|
|
|
}
|
|
|
|
/* do_IO_port_init_read_or_write(char* temp, char rw)
|
|
* Helper function for IO_port_init
|
|
*/
|
|
|
|
static void do_IO_port_init_read_or_write(const WCHAR *str, char rw)
|
|
{
|
|
int val, val1, i;
|
|
WCHAR *end;
|
|
static const WCHAR allW[] = {'a','l','l',0};
|
|
|
|
if (!strcmpiW(str, allW))
|
|
{
|
|
for (i=0; i < sizeof(port_permissions); i++)
|
|
port_permissions[i] |= rw;
|
|
}
|
|
else
|
|
{
|
|
val = -1;
|
|
val1 = -1;
|
|
while (*str)
|
|
{
|
|
switch(*str)
|
|
{
|
|
case ',':
|
|
case ' ':
|
|
case '\t':
|
|
set_IO_permissions(val1, val, rw);
|
|
val1 = -1;
|
|
val = -1;
|
|
str++;
|
|
break;
|
|
case '-':
|
|
val1 = val;
|
|
if (val1 == -1) val1 = 0;
|
|
str++;
|
|
break;
|
|
default:
|
|
if (isdigitW(*str))
|
|
{
|
|
val = strtoulW( str, &end, 0 );
|
|
if (end == str)
|
|
{
|
|
val = -1;
|
|
str++;
|
|
}
|
|
else str = end;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
set_IO_permissions(val1, val, rw);
|
|
}
|
|
}
|
|
|
|
static inline BYTE inb( WORD port )
|
|
{
|
|
BYTE b;
|
|
__asm__ __volatile__( "inb %w1,%0" : "=a" (b) : "d" (port) );
|
|
return b;
|
|
}
|
|
|
|
static inline WORD inw( WORD port )
|
|
{
|
|
WORD w;
|
|
__asm__ __volatile__( "inw %w1,%0" : "=a" (w) : "d" (port) );
|
|
return w;
|
|
}
|
|
|
|
static inline DWORD inl( WORD port )
|
|
{
|
|
DWORD dw;
|
|
__asm__ __volatile__( "inl %w1,%0" : "=a" (dw) : "d" (port) );
|
|
return dw;
|
|
}
|
|
|
|
static inline void outb( BYTE value, WORD port )
|
|
{
|
|
__asm__ __volatile__( "outb %b0,%w1" : : "a" (value), "d" (port) );
|
|
}
|
|
|
|
static inline void outw( WORD value, WORD port )
|
|
{
|
|
__asm__ __volatile__( "outw %w0,%w1" : : "a" (value), "d" (port) );
|
|
}
|
|
|
|
static inline void outl( DWORD value, WORD port )
|
|
{
|
|
__asm__ __volatile__( "outl %0,%w1" : : "a" (value), "d" (port) );
|
|
}
|
|
|
|
static void IO_port_init(void)
|
|
{
|
|
char tmp[1024];
|
|
HKEY hkey;
|
|
DWORD dummy;
|
|
OBJECT_ATTRIBUTES attr;
|
|
UNICODE_STRING nameW;
|
|
|
|
static const WCHAR portsW[] = {'M','a','c','h','i','n','e','\\',
|
|
'S','o','f','t','w','a','r','e','\\',
|
|
'W','i','n','e','\\','W','i','n','e','\\',
|
|
'C','o','n','f','i','g','\\','P','o','r','t','s',0};
|
|
static const WCHAR readW[] = {'r','e','a','d',0};
|
|
static const WCHAR writeW[] = {'w','r','i','t','e',0};
|
|
|
|
do_direct_port_access = 0;
|
|
/* Can we do that? */
|
|
if (!iopl(3))
|
|
{
|
|
iopl(0);
|
|
|
|
attr.Length = sizeof(attr);
|
|
attr.RootDirectory = 0;
|
|
attr.ObjectName = &nameW;
|
|
attr.Attributes = 0;
|
|
attr.SecurityDescriptor = NULL;
|
|
attr.SecurityQualityOfService = NULL;
|
|
RtlInitUnicodeString( &nameW, portsW );
|
|
|
|
if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
|
|
{
|
|
RtlInitUnicodeString( &nameW, readW );
|
|
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
|
|
{
|
|
WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
|
|
do_IO_port_init_read_or_write(str, IO_READ);
|
|
}
|
|
RtlInitUnicodeString( &nameW, writeW );
|
|
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
|
|
{
|
|
WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
|
|
do_IO_port_init_read_or_write(str, IO_WRITE);
|
|
}
|
|
NtClose( hkey );
|
|
}
|
|
}
|
|
IO_FixCMOSCheckSum();
|
|
}
|
|
|
|
#endif /* DIRECT_IO_ACCESS */
|
|
|
|
/**********************************************************************
|
|
* IO_inport
|
|
*
|
|
* Note: The size argument has to be handled correctly _externally_
|
|
* (as we always return a DWORD)
|
|
*/
|
|
DWORD IO_inport( int port, int size )
|
|
{
|
|
DWORD res = 0;
|
|
|
|
TRACE("%d-byte value from port 0x%02x\n", size, port );
|
|
|
|
#ifdef HAVE_PPDEV
|
|
if (do_pp_port_access == -1)
|
|
do_pp_port_access =IO_pp_init();
|
|
if ((do_pp_port_access == 0 ) && (size == 1))
|
|
if (!IO_pp_inp(port,&res))
|
|
return res;
|
|
#endif
|
|
#ifdef DIRECT_IO_ACCESS
|
|
if (do_direct_port_access == -1) IO_port_init();
|
|
if ((do_direct_port_access)
|
|
/* Make sure we have access to the port */
|
|
&& (port_permissions[port] & IO_READ))
|
|
{
|
|
iopl(3);
|
|
switch(size)
|
|
{
|
|
case 1: res = inb( port ); break;
|
|
case 2: res = inw( port ); break;
|
|
case 4: res = inl( port ); break;
|
|
default:
|
|
ERR("invalid data size %d\n", size);
|
|
}
|
|
iopl(0);
|
|
return res;
|
|
}
|
|
#endif
|
|
|
|
/* first give the DOS VM a chance to handle it */
|
|
if (Dosvm.inport || DPMI_LoadDosSystem())
|
|
if (Dosvm.inport( port, size, &res ))
|
|
return res;
|
|
|
|
switch (port)
|
|
{
|
|
case 0x40:
|
|
case 0x41:
|
|
case 0x42:
|
|
{
|
|
BYTE chan = port & 3;
|
|
WORD tempval = 0;
|
|
if (tmr_8253[chan].latched)
|
|
tempval = tmr_8253[chan].latch;
|
|
else
|
|
{
|
|
dummy_ctr -= 1 + (int)(10.0 * rand() / (RAND_MAX + 1.0));
|
|
if (chan == 0) /* System timer counter divisor */
|
|
{
|
|
/* FIXME: Dosvm.GetTimer() returns quite rigid values */
|
|
if (Dosvm.GetTimer)
|
|
tempval = dummy_ctr + (WORD)Dosvm.GetTimer();
|
|
else
|
|
tempval = dummy_ctr;
|
|
}
|
|
else
|
|
{
|
|
/* FIXME: intelligent hardware timer emulation needed */
|
|
tempval = dummy_ctr;
|
|
}
|
|
}
|
|
|
|
switch ((tmr_8253[chan].ctrlbyte_ch & 0x30) >> 4)
|
|
{
|
|
case 0:
|
|
res = 0; /* shouldn't happen? */
|
|
break;
|
|
case 1: /* read lo byte */
|
|
res = (BYTE)tempval;
|
|
tmr_8253[chan].latched = FALSE;
|
|
break;
|
|
case 3: /* read lo byte, then hi byte */
|
|
tmr_8253[chan].byte_toggle ^= TRUE; /* toggle */
|
|
if (tmr_8253[chan].byte_toggle)
|
|
{
|
|
res = (BYTE)tempval;
|
|
break;
|
|
}
|
|
/* else [fall through if read hi byte !] */
|
|
case 2: /* read hi byte */
|
|
res = (BYTE)(tempval >> 8);
|
|
tmr_8253[chan].latched = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 0x60:
|
|
#if 0 /* what's this port got to do with parport ? */
|
|
res = (DWORD)parport_8255[0];
|
|
#endif
|
|
break;
|
|
case 0x61:
|
|
res = (DWORD)parport_8255[1];
|
|
break;
|
|
case 0x62:
|
|
res = (DWORD)parport_8255[2];
|
|
break;
|
|
case 0x70:
|
|
res = (DWORD)cmosaddress;
|
|
break;
|
|
case 0x71:
|
|
res = (DWORD)cmosimage[cmosaddress & 0x3f];
|
|
break;
|
|
case 0x200:
|
|
case 0x201:
|
|
res = 0xffffffff; /* no joystick */
|
|
break;
|
|
default:
|
|
WARN("Direct I/O read attempted from port %x\n", port);
|
|
res = 0xffffffff;
|
|
break;
|
|
}
|
|
TRACE(" returning ( 0x%lx )\n", res );
|
|
return res;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* IO_outport
|
|
*/
|
|
void IO_outport( int port, int size, DWORD value )
|
|
{
|
|
TRACE("IO: 0x%lx (%d-byte value) to port 0x%02x\n",
|
|
value, size, port );
|
|
|
|
#ifdef HAVE_PPDEV
|
|
if (do_pp_port_access == -1)
|
|
do_pp_port_access = IO_pp_init();
|
|
if ((do_pp_port_access == 0) && (size == 1))
|
|
if (!IO_pp_outp(port,&value))
|
|
return;
|
|
#endif
|
|
#ifdef DIRECT_IO_ACCESS
|
|
|
|
if (do_direct_port_access == -1) IO_port_init();
|
|
if ((do_direct_port_access)
|
|
/* Make sure we have access to the port */
|
|
&& (port_permissions[port] & IO_WRITE))
|
|
{
|
|
iopl(3);
|
|
switch(size)
|
|
{
|
|
case 1: outb( LOBYTE(value), port ); break;
|
|
case 2: outw( LOWORD(value), port ); break;
|
|
case 4: outl( value, port ); break;
|
|
default:
|
|
WARN("Invalid data size %d\n", size);
|
|
}
|
|
iopl(0);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/* first give the DOS VM a chance to handle it */
|
|
if (Dosvm.outport || DPMI_LoadDosSystem())
|
|
if (Dosvm.outport( port, size, value ))
|
|
return;
|
|
|
|
switch (port)
|
|
{
|
|
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 */
|
|
if (Dosvm.GetTimer)
|
|
tmr_8253[chan].latch = dummy_ctr + (WORD)Dosvm.GetTimer();
|
|
else
|
|
tmr_8253[chan].latch = dummy_ctr;
|
|
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;
|
|
default:
|
|
WARN("Direct I/O write attempted to port %x\n", port );
|
|
break;
|
|
}
|
|
}
|