[aandrejevic] 67585: [NTVDM] Implement EMS function AH = 59h (Get Expanded Memory Hardware Information).

Author: aandrejevic
Date: Wed May  6 23:06:28 2015
New Revision: 67585

URL: http://svn.reactos.org/svn/reactos?rev=67585&view=rev
Log:
[NTVDM]
Implement EMS function AH = 59h (Get Expanded Memory Hardware Information).


Modified:
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.h

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.c	[iso-8859-1] Wed May  6
23:06:28 2015
@@ -361,6 +361,36 @@
             break;
         }
 
+        /* Get Expanded Memory Hardware Information */
+        case 0x59:
+        {
+            if (getAL() == 0x00)
+            {
+                PEMS_HARDWARE_INFO HardwareInfo =
(PEMS_HARDWARE_INFO)SEG_OFF_TO_PTR(getES(), getDI());
+
+                /* Return the hardware information */
+                HardwareInfo->RawPageSize         = EMS_PAGE_SIZE >> 4;
+                HardwareInfo->AlternateRegSets    = 0;
+                HardwareInfo->ContextAreaSize     = sizeof(Mapping);
+                HardwareInfo->DmaRegisterSets     = 0;
+                HardwareInfo->DmaChannelOperation = 0;
+            }
+            else if (getAL() == 0x01)
+            {
+                /* Same as function AH = 42h */
+                setAH(EMS_STATUS_OK);
+                setBX(RtlNumberOfClearBits(&AllocBitmap));
+                setDX(EmsTotalPages);
+            }
+            else
+            {
+                DPRINT1("Invalid subfunction %02X for EMS function AH = 59h\n",
getAL());
+                setAH(EMS_STATUS_UNKNOWN_FUNCTION);
+            }
+
+            break;
+        }
+
         default:
         {
             DPRINT1("EMS function AH = %02X NOT IMPLEMENTED\n", getAH());

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.h	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/emsdrv.h	[iso-8859-1] Wed May  6
23:06:28 2015
@@ -58,6 +58,15 @@
     USHORT DestSegment;
 } EMS_COPY_DATA, *PEMS_COPY_DATA;
 
+typedef struct _EMS_HARDWARE_INFO
+{
+    WORD RawPageSize;
+    WORD AlternateRegSets;
+    WORD ContextAreaSize;
+    WORD DmaRegisterSets;
+    WORD DmaChannelOperation;
+} EMS_HARDWARE_INFO, *PEMS_HARDWARE_INFO;
+
 #pragma pack(pop)
 
 #endif