diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c new file mode 100644 index 000000000..c45b3165e --- /dev/null +++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_video.c @@ -0,0 +1,241 @@ +/* $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; +} |