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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c,v 3.15 2002/05/31 18:46:02 dawes Exp $ */
/*
* (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 I_NEED_OS2_H
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/X.h>
#include "input.h"
#include "scrnintstr.h"
#define INCL_DOSFILEMGR
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "xf86OSpriv.h"
#include "compiler.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.
*/
#define LOWORD(X) ((X) & 0xffff)
#define HIWORD(X) ((X) >> 16)
static HFILE mapdev = -1;
static ULONG stored_virt_addr;
static char* mappath = "\\DEV\\PMAP$";
static HFILE open_mmap()
{
APIRET rc;
ULONG action;
if (mapdev != -1)
return mapdev;
rc = DosOpen((PSZ)mappath, (PHFILE)&mapdev, (PULONG)&action,
(ULONG)0, FILE_SYSTEM, FILE_OPEN,
OPEN_SHARE_DENYNONE|OPEN_FLAGS_NOINHERIT|OPEN_ACCESS_READONLY,
(ULONG)0);
if (rc!=0) {
mapdev = -1; }
else {
/* fg030203: ask for driver version of xf86sup.sys;
no output prior to version 1.539 */
struct {
ULONG magic;
ULONG drvtype;
ULONG version;
} drvid;
ULONG dlen = sizeof(drvid);
if ((rc=DosDevIOCtl(mapdev, (ULONG)0x76, (ULONG)0x61,
(PVOID)NULL, (ULONG)0, (PULONG)NULL,
(PVOID)&drvid, (ULONG)dlen, (PULONG)&dlen))==0) {
xf86Msg(X_INFO,"PMAP$: driver version = %x.%x\n",
HIWORD(drvid.version),
LOWORD(drvid.version));
}
}
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 */
/***************************************************************************/
/* ARGSUSED */
static pointer
mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
{
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)
FatalError("mapVidMem: install DEVICE=path\\XF86SUP.SYS!");
if ((rc=DosDevIOCtl(mapdev, (ULONG)0x76, (ULONG)0x44,
(PVOID)&par, (ULONG)plen, (PULONG)&plen,
(PVOID)&dta, (ULONG)dlen, (PULONG)&dlen)) == 0) {
xf86Msg(X_INFO,"mapVidMem succeeded: (ScreenNum=%d, Base=0x%x, Size=0x%x, vaddr=0x%x)\n",
ScreenNum, Base, Size, dta.addr);
if (dlen==sizeof(dta)) {
return (pointer)dta.addr;
}
/*else fail*/
}
/* fail */
FatalError("mapVidMem FAILED!!: rc = %d (ScreenNum=%d, Base=0x%x, Size=0x%x, return len=%d, vaddr=0x%x, sel=0x%x)\n",
rc, ScreenNum, Base, Size, dlen, dta.addr, dta.sel);
return (pointer)0;
}
/* ARGSUSED */
static void
unmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
{
DIOParPkt par;
ULONG plen,vmaddr;
APIRET rc;
/* 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)
rc = DosDevIOCtl(mapdev, (ULONG)0x76, (ULONG)0x45,
(PVOID)&par, (ULONG)plen, (PULONG)&plen,
&vmaddr, sizeof(ULONG), &plen);
if (!rc) {
xf86Msg(X_INFO,"unmapVidMem: Unmap phys memory at virtual address 0x%x\n",
vmaddr);
}
else {
xf86Msg(X_ERROR,"unmapVidMem: Unmap phys memory at base 0x%x, virtual address 0x%x, rc=%d\n",
Base,vmaddr,rc);
}
/* 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
*/
/* close_mmap(); */
}
/***************************************************************************/
/* Interrupt Handling section */
/***************************************************************************/
Bool xf86DisableInterrupts()
{
/* allow interrupt disabling but check for side-effects.
* Not a good policy on OS/2...
*/
asm ("cli");
return TRUE;
}
void xf86EnableInterrupts()
{
/*Reenable*/
asm ("sti");
}
/***************************************************************************/
/* Initialize video memory */
/***************************************************************************/
void
xf86OSInitVidMem(VidMemInfoPtr pVidMem)
{
pVidMem->linearSupported = TRUE;
pVidMem->mapMem = mapVidMem;
pVidMem->unmapMem = unmapVidMem;
#if 0
pVidMem->mapMemSparse = 0;
pVidMem->unmapMemSparse = 0;
#endif
pVidMem->setWC = 0; /* no MTRR support */
pVidMem->undoWC = 0;
pVidMem->initialised = TRUE;
}
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