Improved readability and new stuffs

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4165 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 161 insertions, 0 deletions

diff --git a/libdha/sysdep/libdha_os2.c b/libdha/sysdep/libdha_os2.c
new file mode 100644
index 0000000000..041f6be71c
--- /dev/null
+++ b/libdha/sysdep/libdha_os2.c
@@ -0,0 +1,161 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c,v 3.14 2000/10/28 01:42:28 mvojkovi Exp $ */
+/* Modified for libdha by Nick Kurshev. */
+/*
+ * (c) Copyright 1994,1999 by Holger Veit
+ *			<Holger.Veit@gmd.de>
+ * Modified 1996 by Sebastien Marineau <marineau@genie.uottawa.ca>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a 
+ * copy of this software and associated documentation files (the "Software"), 
+ * to deal in the Software without restriction, including without limitation 
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+ * and/or sell copies of the Software, and to permit persons to whom the 
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL 
+ * HOLGER VEIT  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+ * SOFTWARE.
+ * 
+ * Except as contained in this notice, the name of Holger Veit shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from Holger Veit.
+ *
+ */
+/* $XConsortium: os2_video.c /main/8 1996/10/27 11:49:02 kaleb $ */
+
+#define INCL_DOSFILEMGR
+#include "os2.h"
+
+/***************************************************************************/
+/* Video Memory Mapping helper functions                                   */
+/***************************************************************************/
+
+/* This section uses the xf86sup.sys driver developed for xfree86.
+ * The driver allows mapping of physical memory
+ * You must install it with a line DEVICE=path\xf86sup.sys in config.sys.
+ */
+
+static HFILE mapdev = -1;
+static ULONG stored_virt_addr;
+static char* mappath = "\\DEV\\PMAP$";
+static HFILE open_mmap() 
+{
+	APIRET rc;
+	ULONG action;
+
+	if (mapdev != -1)
+		return mapdev;
+
+	rc = DosOpen((PSZ)mappath, (PHFILE)&mapdev, (PULONG)&action,
+	   (ULONG)0, FILE_SYSTEM, FILE_OPEN,
+	   OPEN_SHARE_DENYNONE|OPEN_FLAGS_NOINHERIT|OPEN_ACCESS_READONLY,
+	   (ULONG)0);
+	if (rc!=0)
+		mapdev = -1;
+	return mapdev;
+}
+
+static void close_mmap()
+{
+	if (mapdev != -1)
+		DosClose(mapdev);
+	mapdev = -1;
+}
+
+/* this structure is used as a parameter packet for the direct access
+ * ioctl of pmap$
+ */
+
+/* Changed here for structure of driver PMAP$ */
+
+typedef struct{
+	ULONG addr;
+	ULONG size;
+} DIOParPkt;
+
+/* This is the data packet for the mapping function */
+
+typedef struct {
+	ULONG addr;
+	USHORT sel;
+} DIODtaPkt;
+
+/***************************************************************************/
+/* Video Memory Mapping section                                            */
+/***************************************************************************/
+
+static long callcount = 0L;
+
+/* ARGSUSED */
+void * map_phys_mem(unsigned long base, unsigned long size)
+{
+	DIOParPkt	par;
+	ULONG		plen;
+	DIODtaPkt	dta;
+	ULONG		dlen;
+	static BOOL	ErrRedir = FALSE;
+	APIRET		rc;
+
+	par.addr	= (ULONG)base;
+	par.size	= (ULONG)size;
+	plen 		= sizeof(par);
+	dlen		= sizeof(dta);
+
+	open_mmap();
+	if (mapdev == -1)
+	{
+		perror("libdha: device xf86sup.sys is not installed");
+		exit(1);
+	}
+	if ((rc=DosDevIOCtl(mapdev, (ULONG)0x76, (ULONG)0x44,
+	      (PVOID)&par, (ULONG)plen, (PULONG)&plen,
+	      (PVOID)&dta, (ULONG)dlen, (PULONG)&dlen)) == 0) {
+		if (dlen==sizeof(dta)) {
+			callcount++;
+			return (void *)dta.addr;
+		}
+		/*else fail*/
+	}
+	return (void *)-1;
+}
+
+/* ARGSUSED */
+void unmap_phys_mem(void * base, unsigned long size)
+{
+	DIOParPkt	par;
+	ULONG		plen,vmaddr;
+
+/* We need here the VIRTADDR for unmapping, not the physical address      */
+/* This should be taken care of either here by keeping track of allocated */
+/* pointers, but this is also already done in the driver... Thus it would */
+/* be a waste to do this tracking twice. Can this be changed when the fn. */
+/* is called? This would require tracking this function in all servers,   */
+/* and changing it appropriately to call this with the virtual adress	  */
+/* If the above mapping function is only called once, then we can store   */
+/* the virtual adress and use it here.... 				  */
+	
+	par.addr	= (ULONG)base;
+	par.size	= 0xffffffff; /* This is the virtual address parameter. Set this to ignore */
+	plen 		= sizeof(par);
+
+	if (mapdev != -1)
+	{
+	    DosDevIOCtl(mapdev, (ULONG)0x76, (ULONG)0x46,
+	      (PVOID)&par, (ULONG)plen, (PULONG)&plen,
+	      &vmaddr, sizeof(ULONG), &plen);
+	    callcount--;
+	}
+/* Now if more than one region has been allocated and we close the driver,
+ * the other pointers will immediately become invalid. We avoid closing
+ * driver for now, but this should be fixed for server exit
+ */
+ 
+	if(!callcount) close_mmap();
+}