R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 589 insertions, 0 deletions

diff --git a/hw/xfree86/os-support/sysv/sysv_video.c b/hw/xfree86/os-support/sysv/sysv_video.c
new file mode 100644
index 000000000..7dd1575fc
--- /dev/null
+++ b/hw/xfree86/os-support/sysv/sysv_video.c
@@ -0,0 +1,589 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sysv/sysv_video.c,v 3.9 1996/12/23 06:51:27 dawes Exp $ */
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
+ * Copyright 1993 by David Wexelblat <dwex@goblin.org>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the names of Thomas Roell and David Wexelblat 
+ * not be used in advertising or publicity pertaining to distribution of 
+ * the software without specific, written prior permission.  Thomas Roell and
+ * David Wexelblat makes no representations about the suitability of this 
+ * software for any purpose.  It is provided "as is" without express or 
+ * implied warranty.
+ *
+ * THOMAS ROELL AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO 
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND 
+ * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID WEXELBLAT BE LIABLE FOR 
+ * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER 
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF 
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/* $Xorg: sysv_video.c,v 1.3 2000/08/17 19:51:33 cpqbld Exp $ */
+
+#include "X.h"
+#include "input.h"
+#include "scrnintstr.h"
+
+#define _NEED_SYSI86
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86_OSlib.h"
+
+#ifndef SI86IOPL
+#define SET_IOPL() sysi86(SI86V86,V86SC_IOPL,PS_IOPL)
+#define RESET_IOPL() sysi86(SI86V86,V86SC_IOPL,0)
+#else
+#define SET_IOPL() sysi86(SI86IOPL,3)
+#define RESET_IOPL() sysi86(SI86IOPL,0)
+#endif
+
+/***************************************************************************/
+/* Video Memory Mapping section                                            */
+/***************************************************************************/
+
+struct kd_memloc MapDSC[MAXSCREENS][NUM_REGIONS];
+pointer AllocAddress[MAXSCREENS][NUM_REGIONS];
+#ifndef SVR4
+static int mmapFd = -2;
+#endif
+#if 0
+/* inserted for DGA support Tue Dec  5 21:33:00 MET 1995 mr */
+#if defined(SVR4) || defined(HAS_SVR3_MMAPDRV)
+static struct xf86memMap {
+  int offset;
+  int memSize;
+} xf86memMaps[MAXSCREENS];
+#endif
+#endif
+
+Bool xf86LinearVidMem()
+{
+#ifdef SVR4
+	return TRUE;
+#else
+#ifdef HAS_SVR3_MMAPDRV
+	if(mmapFd >= 0)
+	{
+		return TRUE;
+	}
+	if ((mmapFd = open("/dev/mmap", O_RDWR)) != -1)
+	{
+	    if(ioctl(mmapFd, GETVERSION) < 0x0222) {
+		ErrorF("xf86LinearVidMem: MMAP 2.2.2 or above required\n");
+		ErrorF(" linear memory access disabled\n");
+		return FALSE;
+	    }
+	    return TRUE;
+	}
+	ErrorF("xf86LinearVidMem: failed to open /dev/mmap (%s)\n",
+	       strerror(errno));
+	ErrorF(" linear memory access disabled\n");
+#endif
+	return FALSE;
+#endif
+}
+
+pointer xf86MapVidMem(ScreenNum, Region, Base, Size)
+int ScreenNum;
+int Region;
+pointer Base;
+unsigned long Size;
+{
+	pointer base;
+	int fd;
+
+#if defined(SVR4)
+	if ((fd = open(DEV_MEM, O_RDWR)) < 0)
+	{
+		FatalError("xf86MapVidMem: failed to open %s (%s)\n",
+			   DEV_MEM, strerror(errno));
+	}
+	base = (pointer)mmap((caddr_t)0, Size, PROT_READ|PROT_WRITE,
+			     MAP_SHARED, fd, (off_t)Base);
+	close(fd);
+	if ((long)base == -1)
+	{
+		FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n",
+			   "xf86MapVidMem", Size, Base, strerror(errno));
+	}
+#else /* SVR4 */
+#ifdef HAS_SVR3_MMAPDRV
+	if (mmapFd == -2)
+	{
+		mmapFd = open("/dev/mmap", O_RDWR);
+	}
+#endif
+	if (mmapFd >= 0)
+	{
+		/* To force the MMAP driver to provide the address */
+		base = (pointer)0;
+	}
+	else
+	{
+	    AllocAddress[ScreenNum][Region] = (pointer)xalloc(Size + 0x1000);
+	    if (AllocAddress[ScreenNum][Region] == (pointer)0)
+	    {
+		FatalError("xf86MapVidMem: can't alloc framebuffer space\n");
+		/* NOTREACHED */
+	    }
+	    base = (pointer)(((unsigned int)AllocAddress[ScreenNum][Region]
+			      & ~0xFFF) + 0x1000);
+	}
+	MapDSC[ScreenNum][Region].vaddr    = (char *)base;
+	MapDSC[ScreenNum][Region].physaddr = (char *)Base;
+	MapDSC[ScreenNum][Region].length   = Size;
+	MapDSC[ScreenNum][Region].ioflg    = 1;
+
+#ifdef HAS_SVR3_MMAPDRV
+	if(mmapFd >= 0)
+	{
+	    if((base = (pointer)ioctl(mmapFd, MAP,
+			   &(MapDSC[ScreenNum][Region]))) == (pointer)-1)
+	    {
+		FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n",
+			   "xf86MapVidMem", Size, Base, strerror(errno));
+		/* NOTREACHED */
+	    }
+
+	    /* Next time we want the same address! */
+	    MapDSC[ScreenNum][Region].vaddr    = (char *)base;
+#if 0
+/* inserted for DGA support Tue Dec  5 21:33:00 MET 1995 mr */
+	    xf86memMaps[ScreenNum].offset = (int) Base;
+	    xf86memMaps[ScreenNum].memSize = Size;
+#endif
+	    return((pointer)base);
+	}
+#endif
+	if (ioctl(xf86Info.consoleFd, KDMAPDISP,
+		  &(MapDSC[ScreenNum][Region])) < 0)
+	{
+	    FatalError("xf86MapVidMem: Failed to map video mem (%x,%x) (%s)\n",
+		        Base, Size, strerror(errno));
+	    /* NOTREACHED */
+	}
+#endif /* SVR4 */
+#if 0
+	xf86memMaps[ScreenNum].offset = (int) Base;
+	xf86memMaps[ScreenNum].memSize = Size;
+#endif
+	return((pointer)base);
+}
+
+#if 0
+/* inserted for DGA support Tue Dec  5 21:33:00 MET 1995 mr */
+#if defined(SVR4) || defined(HAS_SVR3_MMAPDRV)
+void xf86GetVidMemData(ScreenNum, Base, Size)
+int ScreenNum;
+int *Base;
+int *Size;
+{
+   *Base = xf86memMaps[ScreenNum].offset;
+   *Size = xf86memMaps[ScreenNum].memSize;
+}
+
+#endif
+#endif
+/* ARGSUSED */
+void xf86UnMapVidMem(ScreenNum, Region, Base, Size)
+int ScreenNum;
+int Region;
+pointer Base;
+unsigned long Size;
+{
+#if defined (SVR4)
+	munmap(Base, Size);
+#else /* SVR4 */
+#ifdef HAS_SVR3_MMAPDRV
+	if(mmapFd >= 0)
+	{
+		ioctl(mmapFd, UNMAPRM, MapDSC[ScreenNum][Region].vaddr);
+		return;
+	}
+#endif
+	/* XXXX This is a problem because it unmaps all regions */
+	ioctl(xf86Info.consoleFd, KDUNMAPDISP, 0);
+	xfree(AllocAddress[ScreenNum][Region]);
+#endif /* SVR4 */
+}
+
+/* ARGSUSED */
+void xf86MapDisplay(ScreenNum, Region)
+int ScreenNum;
+int Region;
+{
+#if !defined(SVR4)
+#ifdef HAS_SVR3_MMAPDRV
+	if(mmapFd >= 0)
+	{
+		ioctl(mmapFd, MAP, &(MapDSC[ScreenNum][Region]));
+		return;
+	}
+#endif
+	ioctl(xf86Info.consoleFd, KDMAPDISP, &(MapDSC[ScreenNum][Region]));
+#endif /* SVR4 */
+	return;
+}
+
+/* ARGSUSED */
+void xf86UnMapDisplay(ScreenNum, Region)
+int ScreenNum;
+int Region;
+{
+#if !defined(SVR4)
+#ifdef HAS_SVR3_MMAPDRV
+	if(mmapFd > 0)
+	{
+		ioctl(mmapFd, UNMAP, MapDSC[ScreenNum][Region].vaddr);
+		return;
+	}
+#endif
+	ioctl(xf86Info.consoleFd, KDUNMAPDISP, 0);
+#endif /* SVR4 */
+	return;
+}
+
+/***************************************************************************/
+/* I/O Permissions section                                                 */
+/***************************************************************************/
+
+#define ALWAYS_USE_EXTENDED
+#ifdef ALWAYS_USE_EXTENDED
+
+static Bool ScreenEnabled[MAXSCREENS];
+static Bool ExtendedEnabled = FALSE;
+static Bool InitDone = FALSE;
+
+void
+xf86ClearIOPortList(ScreenNum)
+int ScreenNum;
+{
+	if (!InitDone)
+	{
+		int i;
+		for (i = 0; i < MAXSCREENS; i++)
+			ScreenEnabled[i] = FALSE;
+		InitDone = TRUE;
+	}
+	return;
+}
+
+void
+xf86AddIOPorts(ScreenNum, NumPorts, Ports)
+int ScreenNum;
+int NumPorts;
+unsigned *Ports;
+{
+	return;
+}
+
+void
+xf86EnableIOPorts(ScreenNum)
+int ScreenNum;
+{
+	int i;
+
+	ScreenEnabled[ScreenNum] = TRUE;
+
+	if (ExtendedEnabled)
+		return;
+
+	if (SET_IOPL() < 0)
+	{
+		FatalError("%s: Failed to set IOPL for extended I/O\n",
+			   "xf86EnableIOPorts");
+	}
+	ExtendedEnabled = TRUE;
+
+	return;
+}
+	
+void
+xf86DisableIOPorts(ScreenNum)
+int ScreenNum;
+{
+	int i;
+
+	ScreenEnabled[ScreenNum] = FALSE;
+
+	if (!ExtendedEnabled)
+		return;
+
+	for (i = 0; i < MAXSCREENS; i++)
+		if (ScreenEnabled[i])
+			return;
+
+	RESET_IOPL();
+	ExtendedEnabled = FALSE;
+
+	return;
+}
+
+#else /* !ALWAYS_USE_EXTENDED */
+
+#define DISABLED	0
+#define NON_EXTENDED	1
+#define EXTENDED	2
+
+static unsigned *EnabledPorts[MAXSCREENS];
+static int NumEnabledPorts[MAXSCREENS];
+static Bool ScreenEnabled[MAXSCREENS];
+static Bool ExtendedPorts[MAXSCREENS];
+static Bool ExtendedEnabled = FALSE;
+static Bool InitDone = FALSE;
+static struct kd_disparam OrigParams;
+
+void xf86ClearIOPortList(ScreenNum)
+int ScreenNum;
+{
+	if (!InitDone)
+	{
+		xf86InitPortLists(EnabledPorts, NumEnabledPorts, ScreenEnabled,
+				  ExtendedPorts, MAXSCREENS);
+		if (ioctl(xf86Info.consoleFd, KDDISPTYPE, &OrigParams) < 0)
+		{
+			FatalError("%s: Could not get display parameters\n",
+				   "xf86ClearIOPortList");
+		}
+		InitDone = TRUE;
+		return;
+	}
+	ExtendedPorts[ScreenNum] = FALSE;
+	if (EnabledPorts[ScreenNum] != (unsigned *)NULL)
+		xfree(EnabledPorts[ScreenNum]);
+	EnabledPorts[ScreenNum] = (unsigned *)NULL;
+	NumEnabledPorts[ScreenNum] = 0;
+}
+
+void xf86AddIOPorts(ScreenNum, NumPorts, Ports)
+int ScreenNum;
+int NumPorts;
+unsigned *Ports;
+{
+	int i;
+
+	if (!InitDone)
+	{
+	    FatalError("xf86AddIOPorts: I/O control lists not initialised\n");
+	}
+	EnabledPorts[ScreenNum] = (unsigned *)xrealloc(EnabledPorts[ScreenNum], 
+			(NumEnabledPorts[ScreenNum]+NumPorts)*sizeof(unsigned));
+	for (i = 0; i < NumPorts; i++)
+	{
+		EnabledPorts[ScreenNum][NumEnabledPorts[ScreenNum] + i] =
+								Ports[i];
+		if (Ports[i] > 0x3FF)
+			ExtendedPorts[ScreenNum] = TRUE;
+	}
+	NumEnabledPorts[ScreenNum] += NumPorts;
+}
+
+void xf86EnableIOPorts(ScreenNum)
+int ScreenNum;
+{
+	struct kd_disparam param;
+	int i, j;
+
+	if (ScreenEnabled[ScreenNum])
+		return;
+
+	for (i = 0; i < MAXSCREENS; i++)
+	{
+		if (ExtendedPorts[i] && (ScreenEnabled[i] || i == ScreenNum))
+		{
+		    if (SET_IOPL() < 0)
+		    {
+			FatalError("%s: Failed to set IOPL for extended I/O\n",
+				   "xf86EnableIOPorts");
+		    }
+		    ExtendedEnabled = TRUE;
+		    break;
+		}
+	}
+	/* If extended I/O was used, but isn't any more */
+	if (ExtendedEnabled && i == MAXSCREENS)
+	{
+		RESET_IOPL();
+		ExtendedEnabled = FALSE;
+	}
+	/*
+	 * Turn on non-extended ports even when using extended I/O
+	 * so they are there if extended I/O gets turned off when it's no
+	 * longer needed.
+	 */
+	if (ioctl(xf86Info.consoleFd, KDDISPTYPE, &param) < 0)
+	{
+		FatalError("%s: Could not get display parameters\n",
+			   "xf86EnableIOPorts");
+	}
+	for (i = 0; i < NumEnabledPorts[ScreenNum]; i++)
+	{
+		unsigned port = EnabledPorts[ScreenNum][i];
+
+		if (port > 0x3FF)
+			continue;
+
+		if (!xf86CheckPorts(port, EnabledPorts, NumEnabledPorts,
+				    ScreenEnabled, MAXSCREENS))
+		{
+			continue;
+		}
+		for (j=0; j < MKDIOADDR; j++)
+		{
+			if (param.ioaddr[j] == port)
+			{
+				break;
+			}
+		}
+		if (j == MKDIOADDR)
+		{
+			if (ioctl(xf86Info.consoleFd, KDADDIO, port) < 0)
+			{
+				FatalError("%s: Failed to enable port 0x%x\n",
+					   "xf86EnableIOPorts", port);
+			}
+		}
+	}
+	if (ioctl(xf86Info.consoleFd, KDENABIO, 0) < 0)
+	{
+		FatalError("xf86EnableIOPorts: I/O port enable failed (%s)\n",
+			   strerror(errno));
+	}
+	ScreenEnabled[ScreenNum] = TRUE;
+	return;
+}
+
+void xf86DisableIOPorts(ScreenNum)
+int ScreenNum;
+{
+	struct kd_disparam param;
+	int i, j;
+
+	if (!ScreenEnabled[ScreenNum])
+		return;
+
+	ScreenEnabled[ScreenNum] = FALSE;
+	for (i = 0; i < MAXSCREENS; i++)
+	{
+		if (ScreenEnabled[i] && ExtendedPorts[i])
+			break;
+	}
+	if (ExtendedEnabled && i == MAXSCREENS)
+	{
+		RESET_IOPL();
+		ExtendedEnabled = FALSE;
+	}
+	/* Turn off I/O before changing the access list */
+	ioctl(xf86Info.consoleFd, KDDISABIO, 0);
+	if (ioctl(xf86Info.consoleFd, KDDISPTYPE, &param) < 0)
+	{
+		ErrorF("%s: Could not get display parameters\n",
+		       "xf86DisableIOPorts");
+		return;
+	}
+
+	for (i=0; i < MKDIOADDR; i++)
+	{
+		/* 0 indicates end of list */
+		if (param.ioaddr[i] == 0)
+		{
+			break;
+		}
+		if (!xf86CheckPorts(param.ioaddr[i], EnabledPorts,
+				    NumEnabledPorts, ScreenEnabled, MAXSCREENS))
+		{
+			continue;
+		}
+		for (j=0; j < MKDIOADDR; j++)
+		{
+			if (param.ioaddr[i] == OrigParams.ioaddr[j])
+			{
+				/*
+				 * Port was one of the original ones; don't
+				 * touch it.
+				 */
+				break;
+			}
+		}
+		if (j == MKDIOADDR)
+		{
+			/*
+			 * We added this port, so remove it.
+			 */
+			ioctl(xf86Info.consoleFd, KDDELIO, param.ioaddr[i]);
+		}
+	}
+	/* If any other screens are enabled, turn I/O back on */
+	for (i = 0; i < MAXSCREENS; i++)
+	{
+		if (ScreenEnabled[i])
+		{
+			ioctl(xf86Info.consoleFd, KDENABIO, 0);
+			break;
+		}
+	}
+	return;
+}
+#endif /* ALWAYS_USE_EXTENDED */
+
+void xf86DisableIOPrivs()
+{
+	if (ExtendedEnabled)
+		RESET_IOPL();
+	return;
+}
+
+/***************************************************************************/
+/* Interrupt Handling section                                              */
+/***************************************************************************/
+
+Bool xf86DisableInterrupts()
+{
+	if (!ExtendedEnabled)
+	{
+		if (SET_IOPL() < 0)
+		{
+			return(FALSE);
+		}
+	}
+
+#ifdef __GNUC__
+	__asm__ __volatile__("cli");
+#else 
+	asm("cli");
+#endif /* __GNUC__ */
+
+	if (!ExtendedEnabled)
+	{
+		RESET_IOPL();
+	}
+	return(TRUE);
+}
+
+void xf86EnableInterrupts()
+{
+	if (!ExtendedEnabled)
+	{
+		if (SET_IOPL() < 0)
+		{
+			return;
+		}
+	}
+
+#ifdef __GNUC__
+	__asm__ __volatile__("sti");
+#else 
+	asm("sti");
+#endif /* __GNUC__ */
+
+	if (!ExtendedEnabled)
+	{
+		RESET_IOPL();
+	}
+	return;
+}