2 * Emulation of processor ioports.
4 * Copyright 1995 Morten Welinder
8 - only a few ports are emulated.
9 - real-time clock in "cmos" is bogus. A nifty alarm() setup could
23 static BYTE cmosaddress;
25 static BYTE cmosimage[64] =
27 0x27, 0x34, 0x31, 0x47, 0x16, 0x15, 0x00, 0x01,
28 0x04, 0x94, 0x26, 0x02, 0x50, 0x80, 0x00, 0x00,
29 0x40, 0xb1, 0x00, 0x9c, 0x01, 0x80, 0x02, 0x00,
30 0x1c, 0x00, 0x00, 0xad, 0x02, 0x10, 0x00, 0x00,
31 0x08, 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x00,
32 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x03, 0x19,
33 0x00, 0x1c, 0x19, 0x81, 0x00, 0x0e, 0x00, 0x80,
34 0x1b, 0x7b, 0x21, 0x00, 0x00, 0x00, 0x05, 0x5f
37 #if defined(linux) && defined(__i386__)
38 # define DIRECT_IO_ACCESS
40 # undef DIRECT_IO_ACCESS
41 #endif /* linux && __i386__ */
43 #ifdef DIRECT_IO_ACCESS
45 extern int iopl(int level);
47 static char do_direct_port_access = 0;
48 static char port_permissions[0x10000];
53 #endif /* DIRECT_IO_ACCESS */
55 static void IO_FixCMOSCheckSum()
60 for (i=0x10; i < 0x2d; i++)
62 cmosimage[0x2e] = sum >> 8; /* yes, this IS hi byte !! */
63 cmosimage[0x2f] = sum & 0xff;
64 TRACE(int, "calculated hi %02x, lo %02x\n", cmosimage[0x2e], cmosimage[0x2f]);
67 /**********************************************************************
71 /* set_IO_permissions(int val1, int val)
72 * Helper function for IO_port_init
74 #ifdef DIRECT_IO_ACCESS
75 static void set_IO_permissions(int val1, int val, char rw)
79 if (val == -1) val = 0x3ff;
80 for (j = val1; j <= val; j++)
81 port_permissions[j] |= rw;
83 do_direct_port_access = 1;
86 } else if (val != -1) {
87 do_direct_port_access = 1;
89 port_permissions[val] |= rw;
94 /* do_IO_port_init_read_or_write(char* temp, char rw)
95 * Helper function for IO_port_init
98 static void do_IO_port_init_read_or_write(char* temp, char rw)
100 int val, val1, i, len;
101 if (!strcasecmp(temp, "all")) {
102 MSG("Warning!!! Granting FULL IO port access to"
103 " windoze programs!\nWarning!!! "
104 "*** THIS IS NOT AT ALL "
105 "RECOMMENDED!!! ***\n");
106 for (i=0; i < sizeof(port_permissions); i++)
107 port_permissions[i] |= rw;
109 } else if (!(!strcmp(temp, "*") || *temp == '\0')) {
113 for (i = 0; i < len; i++) {
116 if (temp[i+1] == 'x' || temp[i+1] == 'X') {
117 sscanf(temp+i, "%x", &val);
120 sscanf(temp+i, "%d", &val);
122 while (isxdigit(temp[i]))
129 set_IO_permissions(val1, val, rw);
134 if (val1 == -1) val1 = 0;
137 if (temp[i] >= '0' && temp[i] <= '9') {
138 sscanf(temp+i, "%d", &val);
139 while (isdigit(temp[i]))
144 set_IO_permissions(val1, val, rw);
148 static __inline__ BYTE inb( WORD port )
151 __asm__ __volatile__( "inb %w1,%0" : "=a" (b) : "d" (port) );
155 static __inline__ WORD inw( WORD port )
158 __asm__ __volatile__( "inw %w1,%0" : "=a" (w) : "d" (port) );
162 static __inline__ DWORD inl( WORD port )
165 __asm__ __volatile__( "inl %w1,%0" : "=a" (dw) : "d" (port) );
169 static __inline__ void outb( BYTE value, WORD port )
171 __asm__ __volatile__( "outb %b0,%w1" : : "a" (value), "d" (port) );
174 static __inline__ void outw( WORD value, WORD port )
176 __asm__ __volatile__( "outw %w0,%w1" : : "a" (value), "d" (port) );
179 static __inline__ void outl( DWORD value, WORD port )
181 __asm__ __volatile__( "outl %0,%w1" : : "a" (value), "d" (port) );
184 #endif /* DIRECT_IO_ACCESS */
188 #ifdef DIRECT_IO_ACCESS
191 /* Can we do that? */
195 PROFILE_GetWineIniString( "ports", "read", "*",
196 temp, sizeof(temp) );
197 do_IO_port_init_read_or_write(temp, IO_READ);
198 PROFILE_GetWineIniString( "ports", "write", "*",
199 temp, sizeof(temp) );
200 do_IO_port_init_read_or_write(temp, IO_WRITE);
202 #endif /* DIRECT_IO_ACCESS */
203 IO_FixCMOSCheckSum();
207 /**********************************************************************
210 DWORD IO_inport( int port, int count )
215 #ifdef DIRECT_IO_ACCESS
216 if (do_direct_port_access)
218 /* Make sure we have access to the whole range */
220 for (i = 0; i < count; i++)
221 if (!(port_permissions[port+i] & IO_READ)) break;
227 case 1: res = inb( port ); break;
228 case 2: res = inw( port ); break;
229 case 4: res = inl( port ); break;
231 ERR(int, "invalid count %d\n", count);
239 TRACE(int, "%d bytes from port 0x%02x\n", count, port );
249 b = cmosimage[cmosaddress & 0x3f];
253 b = 0xff; /* no joystick */
256 b = VGA_ioport_in( port );
259 WARN( int, "Direct I/O read attempted from port %x\n", port);
264 res = (res << 8) | b;
266 TRACE(int, " returning ( 0x%lx )\n", res );
271 /**********************************************************************
274 void IO_outport( int port, int count, DWORD value )
278 TRACE(int, "IO: 0x%lx (%d bytes) to port 0x%02x\n",
279 value, count, port );
281 #ifdef DIRECT_IO_ACCESS
282 if (do_direct_port_access)
284 /* Make sure we have access to the whole range */
286 for (i = 0; i < count; i++)
287 if (!(port_permissions[port+i] & IO_WRITE)) break;
293 case 1: outb( LOBYTE(value), port ); break;
294 case 2: outw( LOWORD(value), port ); break;
295 case 4: outl( value, port ); break;
297 WARN(int, "Invalid count %d\n", count);
312 cmosaddress = b & 0x7f;
315 cmosimage[cmosaddress & 0x3f] = b;
319 VGA_ioport_out( port, b );
322 WARN(int, "Direct I/O write attempted to port %x\n", port );