added DOS/OpenWatcom support

swlibs/newpci/pcilib/fxdpmi2.c

@@ -37,6 +37,8 @@
 #include <dpmi.h>
 #include <sys/nearptr.h>
 static FxBool dirty;
+#elif defined(__WATCOMC__)
+#include <i86.h>
 #else
 #include <fxmemmap.h>
 #endif
@@ -164,6 +166,36 @@ pciMapLinearDPMI(FxU32 busNumber, FxU32 physical_addr,
     /* exploit 1 -> 1 physical to linear mapping in low megabyte */
     *linear_addr = physical_addr;
  }
+#elif defined(__WATCOMC__)
+ if (physical_addr >= 0x100000) {
+    union REGS r;
+    /* Hack alert:
+     * because of the TILE shit, we must enhance the mapped area
+     */
+    FxU32 len = *length * 3 / 2;
+
+    /* function 0x800 (Physical Address Mapping) */
+    r.w.ax = 0x800;
+
+    /*
+    ** BX:CX = physical address
+    ** SI:DI = length
+    */
+    r.w.bx = ( FxU16 ) ( physical_addr >> 16 );
+    r.w.cx = ( FxU16 ) ( physical_addr & 0x0000FFFF );
+    r.w.si = ( FxU16 ) ( len >> 16 );
+    r.w.di = ( FxU16 ) ( len & 0x0000FFFF );
+    int386( 0x31, &r, &r );
+
+    /* if cflag set then an error occured */
+    if ( r.w.cflag ) {
+      return FXFALSE;
+    }
+    *linear_addr = (r.w.bx << 16) | r.w.cx;
+ } else {
+    /* exploit 1 -> 1 physical to linear mapping in low megabyte */
+    *linear_addr = physical_addr;
+ }
 #else
   FxBool onWindows;
 
@@ -220,6 +252,18 @@ pciUnmapLinearDPMI( FxU32 linear_addr, FxU32 length )
  }
 
  return FXFALSE;
+#elif defined(__WATCOMC__)
+ union REGS r;
+
+ /* function 0x801 (Free Physical Address Mapping) */
+ r.w.ax = 0x801;
+
+ /* BX:CX = physical address */
+ r.w.bx = ( FxU16 ) ( linear_addr >> 16 );
+ r.w.cx = ( FxU16 ) ( linear_addr & 0x0000FFFF );
+ int386( 0x31, &r, &r );
+
+ return (r.w.cflag == 0);
 #else
   DpmiUnmapMemory(linear_addr, length);
 #endif
@@ -272,7 +316,7 @@ static FxBool
 pciMsrGetDPMI(MSRInfo* in, MSRInfo* out)
 {
 /* [dBorca] */
-#ifdef __DJGPP__
+#if defined(__DJGPP__) || defined(__WATCOMC__)
   return FXTRUE;
 #else
   return DpmiGetMSR((FxU32)in, (FxU32)out);
@@ -283,7 +327,7 @@ static FxBool
 pciMsrSetDPMI(MSRInfo* in, MSRInfo* out)
 {
 /* [dBorca] */
-#ifdef __DJGPP__
+#if defined(__DJGPP__) || defined(__WATCOMC__)
   return FXTRUE;
 #else
   return DpmiSetMSR((FxU32)in, (FxU32)out);
@@ -295,7 +339,7 @@ static FxBool
 pciOutputStringDPMI(const char* msg)
 {
 /* [dBorca] */
-#ifdef __DJGPP__
+#if defined(__DJGPP__) || defined(__WATCOMC__)
  printf("%s", msg);
  return FXTRUE;
 #else
@@ -308,7 +352,7 @@ pciSetPermissionDPMI(const FxU32 addrBase, const FxU32 addrLen,
                    const FxBool writePermP)
 {
 /* [dBorca] */
-#ifdef __DJGPP__
+#if defined(__DJGPP__) || defined(__WATCOMC__)
   return FXTRUE;
 #else
   return DpmiLinearRangeSetPermission(addrBase, addrLen, writePermP);
@@ -319,7 +363,7 @@ static FxBool
 pciSetPassThroughBaseDPMI(FxU32* baseAddr, FxU32 baseAddrLen)
 {
 /* [dBorca] */
-#ifdef __DJGPP__
+#if defined(__DJGPP__) || defined(__WATCOMC__)
   return FXTRUE;
 #else
   return DpmiSetPassThroughBase(baseAddr, baseAddrLen);