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kdrive: Bye bye Xvesa

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This commit is contained in:
Adam Jackson 2008-11-05 11:39:46 -05:00
parent 9a874a71a7
commit 6d21fbf006
13 changed files with 1 additions and 4461 deletions
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2
configure.ac
View File

@ -554,7 +554,6 @@ AC_ARG_ENABLE(xephyr, AS_HELP_STRING([--enable-xephyr], [Build the kdriv
AC_ARG_ENABLE(xsdl, AS_HELP_STRING([--enable-xsdl], [Build the kdrive Xsdl server (default: auto)]), [XSDL=$enableval], [XSDL=auto])
AC_ARG_ENABLE(xfake, AS_HELP_STRING([--enable-xfake], [Build the kdrive 'fake' server (default: auto)]), [XFAKE=$enableval], [XFAKE=auto])
AC_ARG_ENABLE(xfbdev, AS_HELP_STRING([--enable-xfbdev], [Build the kdrive framebuffer device server (default: auto)]), [XFBDEV=$enableval], [XFBDEV=auto])
AC_ARG_ENABLE(kdrive-vesa, AS_HELP_STRING([--enable-kdrive-vesa], [Build the kdrive VESA-based servers (default: auto)]), [KDRIVEVESA=$enableval], [KDRIVEVESA=auto])
dnl chown/chmod to be setuid root as part of build
@ -1875,6 +1874,5 @@ hw/kdrive/fbdev/Makefile
hw/kdrive/linux/Makefile
hw/kdrive/sdl/Makefile
hw/kdrive/src/Makefile
hw/kdrive/vesa/Makefile
xorg-server.pc
])

7
hw/kdrive/Makefile.am
View File

@ -1,7 +1,3 @@
if KDRIVEVESA
VESA_SUBDIRS = vesa
endif
if BUILD_KDRIVEFBDEVLIB
FBDEV_SUBDIRS = fbdev
endif
@ -25,7 +21,6 @@ endif
SERVER_SUBDIRS = \
$(XSDL_SUBDIRS) \
$(FBDEV_SUBDIRS) \
$(VESA_SUBDIRS) \
$(XEPHYR_SUBDIRS) \
$(XFAKE_SUBDIRS)
@ -34,7 +29,7 @@ SUBDIRS = \
$(LINUX_SUBDIRS) \
$(SERVER_SUBDIRS)
DIST_SUBDIRS = vesa fbdev sdl ephyr src linux fake
DIST_SUBDIRS = fbdev sdl ephyr src linux fake
relink:
@for i in $(SERVER_SUBDIRS) ; do make -C $$i relink ; done

33
hw/kdrive/vesa/Makefile.am
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@ -1,33 +0,0 @@
INCLUDES = \
@KDRIVE_INCS@ \
@KDRIVE_CFLAGS@
noinst_LIBRARIES = libvesa.a
bin_PROGRAMS = Xvesa
libvesa_a_SOURCES = \
vesa.c \
vesa.h \
vbe.c \
vbe.h \
vga.c \
vga.h \
vm86.c \
vm86.h
Xvesa_SOURCES = \
vesainit.c
Xvesa_LDADD = \
libvesa.a \
@KDRIVE_LIBS@
Xvesa_DEPENDENCIES = \
libvesa.a \
@KDRIVE_LOCAL_LIBS@
Xvesa_LDFLAGS = $(LD_EXPORT_SYMBOLS_FLAG)
relink:
rm -f $(bin_PROGRAMS) && make $(bin_PROGRAMS)

105
hw/kdrive/vesa/Xvesa.man
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@ -1,105 +0,0 @@
.\" $RCSId: xc/programs/Xserver/hw/kdrive/vesa/Xvesa.man,v 1.5 2001/01/24 00:06:10 dawes Exp $
.TH Xvesa 1 __vendorversion__
.SH NAME
Xvesa \- VESA Bios Extensions tiny X server
.SH SYNOPSIS
.B Xvesa
.RI [ :display ]
.RI [ option ...]
.SH DESCRIPTION
.B Xvesa
is a generic X server for Linux on the x86 platform.
.B Xvesa
doesn't know about any particular hardware, and sets the video mode by
running the video BIOS in VM86 mode.
.B Xvesa
can use both standard VGA BIOS modes and any modes advertised by a
VESA BIOS if available.
.B Xvesa
runs untrusted code with full privileges, and is therefore a fairly
insecure X server.
.B Run at your own risk.
.SH OPTIONS
In addition to the normal KDrive server's options (see Xkdrive(1)),
.B Xvesa
accepts the following command line switches:
.TP 8
.B -mode \fIn\fB
specifies the VESA video mode to use. If mode
.I n
is not supported by your BIOS and hardware,
.B Xvesa
will fail, hang your system, damage your hardware, or cause a global
thermonuclear war; you are on your own. This option overrides any
.B -screen
options.
.TP 8
.B -listmodes
list all supported video modes. If
.B -force
was specified before
.BR -listmodes ,
lists all the modes that your BIOS claims to support, even those that
the
.B Xvesa
server won't be able to use.
.TP 8
.B -force
disable some sanity checks and use the specified mode even if the
BIOS claims not to support it.
.TP 8
.B -shadow
use a shadow framebuffer even if it is not strictly necessary. This
may dramatically improve performance on some hardware.
.TP 8
.B -nolinear
don't use a linear framebuffer even if one is available. You don't
want to use this option.
.TP 8
.B -swaprgb
pass RGB values in the order that works on broken BIOSes. Use this if
the colours are wrong in PseudoColor and 16 colour modes.
.TP 8
.B -map-holes
use a contiguous (hole-less) memory map. This fixes a segmentation
violation with some rare BIOSes that violate the VESA specification,
but may cause slightly higher memory usage on systems that overcommit
memory.
.TP 8
.B -force-text
ignore saved video mode and switch back to regular 25x80 text mode
on server exit or VT switch.
.TP 8
.B -verbose
emit diagnostic messages during BIOS initialization and teardown.
.SH KEYBOARD
Multiple key presses recognized directly by
.B Xvesa
are:
.TP 8
.B Ctrl+Alt+Backspace
Immediately kill the server.
.TP 8
.B Ctrl+Alt+F1...F12
Switch to virtual console 1 through 12.
.SH BUGS
.B Xvesa
opens all IO ports and runs your VESA BIOS, which may be assumed to be
buggy. Allowing your users to run
.B Xvesa
is probably a security hole.
.B Xvesa
records the current BIOS mode when it starts and restores that mode on
termination; if the video card has been reprogrammed by another application,
the display will almost certainly be trashed. The alternative of saving and
restoring the complete video card state has proven unreliable on most video
cards.
.SH SEE ALSO
X(__miscmansuffix__), Xserver(1), Xkdrive(1), xdm(1), xinit(1).
.SH AUTHORS
The VESA driver was written by Juliusz Chroboczek who didn't realise
what he was doing until it was too late. Keith Packard then added
support for standard VGA BIOS modes and is especially proud of 320x200
16 colour mode.

706
hw/kdrive/vesa/vbe.c
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@ -1,706 +0,0 @@
/*
Copyright (c) 2000 by Juliusz Chroboczek
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "vesa.h"
int
VbeGetVib (Vm86InfoPtr vi, VbeInfoBlock *vib)
{
int code;
int mark;
int vib_base;
VbeInfoBlock *vib_low;
mark = Vm86MarkMemory (vi);
vib_base = Vm86AllocateMemory (vi, sizeof (VbeInfoBlock));
vib_low = (VbeInfoBlock*)&(LM(vi, vib_base));
vi->vms.regs.eax = 0x4F00;
vi->vms.regs.es = POINTER_SEGMENT(vib_base);
vi->vms.regs.edi = POINTER_OFFSET(vib_base);
memcpy(vib_low->VbeSignature, "VBE2", 4);
code = VbeDoInterrupt10(vi);
if(code >= 0)
{
if(memcmp(vib_low->VbeSignature, "VESA", 4) == 0)
*vib = *vib_low;
else
code = -1;
}
Vm86ReleaseMemory (vi, mark);
return code;
}
int
VbeGetVmib (Vm86InfoPtr vi, int mode, VbeModeInfoBlock *vmib)
{
int code;
int mark;
int vmib_base;
VbeModeInfoBlock *vmib_low;
mark = Vm86MarkMemory (vi);
vmib_base = Vm86AllocateMemory (vi, sizeof (VbeModeInfoBlock));
vmib_low = (VbeModeInfoBlock*)&(LM(vi, vmib_base));
vi->vms.regs.eax = 0x4F01;
vi->vms.regs.ecx = mode&0xFFFF;
vi->vms.regs.es = POINTER_SEGMENT(vmib_base);
vi->vms.regs.edi = POINTER_OFFSET(vmib_base);
code = VbeDoInterrupt10(vi);
if(code >= 0)
*vmib = *vmib_low;
Vm86ReleaseMemory (vi, mark);
return code;
}
static int
VbeReportVib(Vm86InfoPtr vi, VbeInfoBlock *vib)
{
U32 i, p;
unsigned char c;
int error = 0;
ErrorF("VBE version %c.%c (",
((vib->VbeVersion >> 8) & 0xFF) + '0',
(vib->VbeVersion & 0xFF)+'0');
p = vib->OemStringPtr;
for(i = 0; 1; i++) {
c = Vm86Memory(vi, MAKE_POINTER_1(p+i));
if(!c) break;
if (c >= ' ')
ErrorF("%c", c);
if (i > 32000) {
error = 1;
break;
}
}
ErrorF(")\n");
ErrorF("DAC is %s, controller is %sVGA compatible%s\n",
(vib->Capabilities[0]&1)?"switchable":"fixed",
(vib->Capabilities[0]&2)?"not ":"",
(vib->Capabilities[0]&3)?", RAMDAC causes snow":"");
ErrorF("Total memory: %lu kilobytes\n", 64L*vib->TotalMemory);
if(error)
return -1;
return 0;
}
#if 0
static int
VbeReportModeInfo(Vm86InfoPtr vi, U16 mode, VbeModeInfoBlock *vmib)
{
int supported = (vmib->ModeAttributes&0x1)?1:0;
int colour = (vmib->ModeAttributes&0x8)?1:0;
int graphics = (vmib->ModeAttributes&0x10)?1:0;
int vga_compatible = !((vmib->ModeAttributes&0x20)?1:0);
int linear_fb = (vmib->ModeAttributes&0x80)?1:0;
ErrorF("0x%04X: %dx%dx%d%s",
(unsigned)mode,
(int)vmib->XResolution, (int)vmib->YResolution,
(int)vmib->BitsPerPixel,
colour?"":" (monochrome)",
graphics?"":" (graphics)",
vga_compatible?"":" (vga compatible)",
linear_fb?"":" (linear frame buffer)");
switch(vmib->MemoryModel) {
case 0:
ErrorF(" text mode (%dx%d)",
(int)vmib->XCharSize, (int)vmib->YCharSize);
break;
case 1:
ErrorF(" CGA graphics");
break;
case 2:
ErrorF(" Hercules graphics");
break;
case 3:
ErrorF(" Planar (%d planes)", vmib->NumberOfPlanes);
break;
case 4:
ErrorF(" PseudoColor");
break;
case 5:
ErrorF(" Non-chain 4, 256 colour");
break;
case 6:
if(vmib->DirectColorModeInfo & 1)
ErrorF(" DirectColor");
else
ErrorF(" TrueColor");
ErrorF(" [%d:%d:%d:%d]",
vmib->RedMaskSize, vmib->GreenMaskSize, vmib->BlueMaskSize,
vmib->RsvdMaskSize);
if(vmib->DirectColorModeInfo & 2)
ErrorF(" (reserved bits are reserved)");
break;
case 7: ErrorF("YUV");
break;
default:
ErrorF("unknown MemoryModel 0x%X ", vmib->MemoryModel);
}
if(!supported)
ErrorF(" (unsupported)");
else if(!linear_fb)
ErrorF(" (no linear framebuffer)");
ErrorF("\n");
return 0;
}
#endif
void
VbeReportInfo (Vm86InfoPtr vi)
{
VbeInfoBlock vib;
int code;
code = VbeGetVib (vi, &vib);
if (code >= 0)
VbeReportVib(vi, &vib);
}
int
VbeGetNmode (Vm86InfoPtr vi)
{
VbeInfoBlock vib;
int code;
unsigned int p;
int n;
int mode;
code = VbeGetVib (vi, &vib);
if (code >= 0)
{
p = MAKE_POINTER_1(vib.VideoModePtr);
for (n = 0; ; n++)
{
mode = Vm86MemoryW(vi, p);
if (mode == 0xffff)
break;
p += 2;
}
code = n;
}
return code;
}
int
VbeGetModes (Vm86InfoPtr vi, VesaModePtr modes, int nmode)
{
VbeInfoBlock vib;
int code;
unsigned int p;
int n;
int mode;
VbeModeInfoBlock vmib;
code = VbeGetVib (vi, &vib);
if (code < 0)
return code;
memset (modes, '\0', nmode * sizeof (VesaModeRec));
p = MAKE_POINTER_1(vib.VideoModePtr);
for (n = 0; n < nmode; n++)
{
mode = Vm86MemoryW(vi, p);
if (mode == 0xffff)
break;
modes[n].mode = mode;
modes[n].vbe = 1;
p += 2;
}
nmode = n;
for (n = 0; n < nmode; n++)
{
code = VbeGetVmib (vi, modes[n].mode, &vmib);
if (code >= 0)
{
modes[n].ModeAttributes = vmib.ModeAttributes;
modes[n].NumberOfPlanes = vmib.NumberOfPlanes;
modes[n].BitsPerPixel = vmib.BitsPerPixel;
modes[n].MemoryModel = vmib.MemoryModel;
modes[n].RedMaskSize = vmib.RedMaskSize;
modes[n].RedFieldPosition = vmib.RedFieldPosition;
modes[n].GreenMaskSize = vmib.GreenMaskSize;
modes[n].GreenFieldPosition = vmib.GreenFieldPosition;
modes[n].BlueMaskSize = vmib.BlueMaskSize;
modes[n].BlueFieldPosition = vmib.BlueFieldPosition;
modes[n].RsvdMaskSize = vmib.RsvdMaskSize;
modes[n].RsvdFieldPosition = vmib.RsvdFieldPosition;
modes[n].DirectColorModeInfo = vmib.DirectColorModeInfo;
modes[n].XResolution = vmib.XResolution;
modes[n].YResolution = vmib.YResolution;
modes[n].BytesPerScanLine = vmib.BytesPerScanLine;
}
}
return nmode;
}
VbeInfoPtr
VbeInit (Vm86InfoPtr vi)
{
VbeInfoPtr vbe;
int code;
VbeInfoBlock vib;
code = VbeGetVib (vi, &vib);
if (code < 0)
return 0;
vbe = xalloc (sizeof (VbeInfoRec));
if (!vbe)
return 0;
vbe->palette_format = 6;
vbe->palette_wait = TRUE;
return vbe;
}
void
VbeCleanup (Vm86InfoPtr vi, VbeInfoPtr vbe)
{
xfree (vbe);
}
int
VbeSetMode (Vm86InfoPtr vi, VbeInfoPtr vbe, int mode, int linear, int direct)
{
int code;
VbeInfoBlock vib;
int palette_wait = 0, palette_hi = 0;
code = VbeGetVib (vi, &vib);
if (code < 0)
return -1;
code = VbeGetVmib (vi, mode, &vbe->vmib);
if (code < 0)
return -1;
mode = (mode & 0xffff) &~ 0x8000;
if (linear)
mode |= 0x4000;
vi->vms.regs.eax = 0x4F02;
vi->vms.regs.ebx = mode;
code = VbeDoInterrupt10(vi);
if(code < 0)
return -1;
vbe->windowA_offset = vbe->windowB_offset = -1;
vbe->last_window = 1;
if (!direct)
{
if(vib.Capabilities[0] & 1)
palette_hi = 1;
if(vib.Capabilities[0] & 4)
palette_wait = 1;
if(palette_hi || palette_wait)
VbeSetPaletteOptions(vi, vbe, palette_hi?8:6, palette_wait);
}
return 0;
}
int
VbeGetMode(Vm86InfoPtr vi, int *mode)
{
int code;
vi->vms.regs.eax = 0x4F03;
code = VbeDoInterrupt10(vi);
if(code < 0)
return - 1;
*mode = vi->vms.regs.ebx & 0xFFFF;
return 0;
}
void *
VbeMapFramebuffer(Vm86InfoPtr vi, VbeInfoPtr vbe, int mode, int *ret_size, CARD32 *ret_phys)
{
U8 *fb;
VbeInfoBlock vib;
VbeModeInfoBlock vmib;
int size;
int pagesize = getpagesize();
int before, after;
if (VbeGetVib (vi, &vib) < 0)
return 0;
if (VbeGetVmib (vi, mode, &vmib) < 0)
return 0;
size = 1024 * 64L * vib.TotalMemory;
*ret_size = size;
*ret_phys = vmib.PhysBasePtr;
before = vmib.PhysBasePtr % pagesize;
after = pagesize - ((vmib.PhysBasePtr + size) % pagesize);
if(after == pagesize)
after = 0;
fb = KdMapDevice (vmib.PhysBasePtr - before, before + size + after);
if(fb == 0)
{
ErrorF("Failed to map framebuffer\n");
return NULL;
}
KdSetMappedMode (vmib.PhysBasePtr - before, before + size + after,
KD_MAPPED_MODE_FRAMEBUFFER);
return fb + before;
}
void
VbeUnmapFramebuffer(Vm86InfoPtr vi, VbeInfoPtr vbe, int mode, void *fb)
{
VbeInfoBlock vib;
VbeModeInfoBlock vmib;
int size;
int pagesize = getpagesize();
int before, after;
if (VbeGetVib (vi, &vib) < 0)
return;
if (VbeGetVmib (vi, mode, &vmib) < 0)
return;
size = 1024 * 64L * vib.TotalMemory;
before = vmib.PhysBasePtr % pagesize;
after = pagesize - ((vmib.PhysBasePtr + size) % pagesize);
if(after == pagesize)
after = 0;
fb = (void *) ((char *) fb - before);
KdUnmapDevice (fb, before + size + after);
KdResetMappedMode (vmib.PhysBasePtr - before, before + size + after,
KD_MAPPED_MODE_FRAMEBUFFER);
}
int
VbeSetPalette(Vm86InfoPtr vi, VbeInfoPtr vbe, int first, int number, U8 *entries)
{
U8 *palette_scratch;
int mark;
int palette_base;
int i, code;
if(number == 0)
return 0;
if(first < 0 || number < 0 || first + number > 256) {
ErrorF("Cannot set %d, %d palette entries\n", first, number);
return -1;
}
if(vbe->palette_format < 6 || vbe->palette_format > 8) {
ErrorF("Impossible palette format %d\n", vbe->palette_format);
return -1;
}
mark = Vm86MarkMemory (vi);
palette_base = Vm86AllocateMemory (vi, 4 * 256);
palette_scratch = &LM(vi, palette_base);
for(i=0; i<number*4; i++)
palette_scratch[i] = entries[i] >> (8 - vbe->palette_format);
vi->vms.regs.eax = 0x4F09;
if(vbe->palette_wait)
vi->vms.regs.ebx = 0x80;
else
vi->vms.regs.ebx = 0x00;
vi->vms.regs.ecx = number;
vi->vms.regs.edx = first;
vi->vms.regs.es = POINTER_SEGMENT(palette_base);
vi->vms.regs.edi = POINTER_OFFSET(palette_base);
code = VbeDoInterrupt10(vi);
Vm86ReleaseMemory (vi, mark);
if(code < 0)
return -1;
return 0;
}
int
VbeGetPalette(Vm86InfoPtr vi, VbeInfoPtr vbe, int first, int number, U8 *entries)
{
U8 *palette_scratch;
int mark;
int palette_base;
int i, code;
if(number == 0)
return 0;
if(first < 0 || number < 0 || first + number > 256) {
ErrorF("Cannot get %d, %d palette entries\n", first, number);
return -1;
}
if(vbe->palette_format < 6 || vbe->palette_format > 8) {
ErrorF("Impossible palette format %d\n", vbe->palette_format);
return -1;
}
mark = Vm86MarkMemory (vi);
palette_base = Vm86AllocateMemory (vi, 4 * 256);
palette_scratch = &LM(vi, palette_base);
vi->vms.regs.eax = 0x4F09;
vi->vms.regs.ebx = 0x01;
vi->vms.regs.ecx = number;
vi->vms.regs.edx = first;
vi->vms.regs.es = POINTER_SEGMENT(palette_base);
vi->vms.regs.edi = POINTER_OFFSET(palette_base);
code = VbeDoInterrupt10(vi);
if(code >= 0)
{
for(i=0; i<number*4; i++)
entries[i] = palette_scratch[i] << (8-vbe->palette_format);
}
Vm86ReleaseMemory (vi, mark);
return 0;
}
int
VbeSetPaletteOptions(Vm86InfoPtr vi, VbeInfoPtr vbe, U8 bits, int wait)
{
int code;
if(bits < 6 || bits > 8) {
ErrorF("Impossible palette format %d\n", bits);
return -1;
}
if(bits != vbe->palette_format)
{
vbe->palette_format = 0;
vi->vms.regs.eax = 0x4F08;
vi->vms.regs.ebx = bits << 8;
code = VbeDoInterrupt10(vi);
if(code < 0)
return -1;
vbe->palette_format = bits;
}
vbe->palette_wait = wait;
return 0;
}
static int
VbeReallySetWindow(Vm86InfoPtr vi, U8 window, U16 winnum)
{
int code;
vi->vms.regs.eax = 0x4F05;
vi->vms.regs.ebx = window;
vi->vms.regs.edx = winnum;
code = VbeDoInterrupt10(vi);
if(code < 0)
return -1;
return 0;
}
void *
VbeSetWindow(Vm86InfoPtr vi, VbeInfoPtr vbe, int offset, int purpose, int *size_return)
{
int window_size = vbe->vmib.WinSize * 1024;
int code;
int winnum;
if(vbe->windowA_offset >= 0)
if(vbe->windowA_offset <= offset && vbe->windowA_offset + window_size > offset)
if(vbe->vmib.WinAAttributes & purpose)
goto windowA;
if(vbe->windowB_offset >= 0)
if(vbe->windowB_offset <= offset && vbe->windowB_offset + window_size > offset)
if(vbe->vmib.WinBAttributes & purpose)
goto windowB;
if(!(vbe->vmib.WinBAttributes & purpose) ||
!(vbe->vmib.WinBAttributes & VBE_WINDOW_RELOCATE))
goto set_windowA;
if(!(vbe->vmib.WinAAttributes & purpose) ||
!(vbe->vmib.WinAAttributes & VBE_WINDOW_RELOCATE))
goto set_windowB;
if(vbe->last_window)
goto set_windowA;
else
goto set_windowB;
set_windowA:
winnum = offset / (vbe->vmib.WinGranularity * 1024);
code = VbeReallySetWindow(vi, 0, winnum);
if(code < 0) {
ErrorF("Couldn't set window A to %d*%d\n",
(int)winnum, (int)vbe->vmib.WinGranularity);
return NULL;
}
vbe->windowA_offset = winnum * vbe->vmib.WinGranularity * 1024;
windowA:
vbe->last_window = 0;
*size_return = vbe->vmib.WinSize * 1024 - (offset - vbe->windowA_offset);
return ((U8*)&(LM(vi, MAKE_POINTER(vbe->vmib.WinASegment, 0)))) + offset - vbe->windowA_offset;
set_windowB:
winnum = offset / (vbe->vmib.WinGranularity * 1024);
code = VbeReallySetWindow(vi, 1, winnum);
if(code < 0) {
ErrorF("Couldn't set window B to %d*%d\n",
(int)winnum, (int)vbe->vmib.WinGranularity);
return NULL;
}
vbe->windowB_offset = winnum * vbe->vmib.WinGranularity * 1024;
windowB:
vbe->last_window = 1;
*size_return = vbe->vmib.WinSize * 1024 - (offset - vbe->windowB_offset);
return ((U8*)&(LM(vi, MAKE_POINTER(vbe->vmib.WinBSegment, 0)))) + offset - vbe->windowB_offset;
}
static const int VbeDPMSModes[4] = {
0x00, /* KD_DPMS_NORMAL */
0x01, /* KD_DPMS_STANDBY */
0x02, /* KD_DPMS_SUSPEND */
0x04, /* KD_DPMS_POWERDOWN */
};
Bool
VbeDPMS(Vm86InfoPtr vi, int mode)
{
int code;
/*
* Check which modes are supported
*/
vi->vms.regs.eax = 0x4f10;
vi->vms.regs.ebx = 0x0000;
vi->vms.regs.es = 0;
vi->vms.regs.edi = 0;
code = VbeDoInterrupt10 (vi);
if (code < 0)
{
ErrorF ("No DPMS Support %d\n", code);
return FALSE;
}
/* Skip this stage if it's not supported */
if (((vi->vms.regs.ebx >> 4) & VbeDPMSModes[mode]) != VbeDPMSModes[mode])
return FALSE;
/* Select this mode */
vi->vms.regs.eax = 0x4f10;
vi->vms.regs.ebx = (VbeDPMSModes[mode] << 8) | 0x01;
code = VbeDoInterrupt10 (vi);
if (code < 0)
{
ErrorF ("DPMS failed %d\n", code);
return FALSE;
}
return TRUE;
}
Bool
VbeBoot(Vm86InfoPtr vi)
{
int code;
int bus = 1;
int device = 0;
int function = 0;
vi->vms.regs.eax = (bus << 8) | (device << 3) | (function & 0x7);
code = VbeDoInterruptE6 (vi);
ErrorF ("Boot: %d\n", code);
return TRUE;
}
int
VbeDoInterrupt10(Vm86InfoPtr vi)
{
int code;
int oldax;
oldax = vi->vms.regs.eax & 0xFFFF;
code = Vm86DoInterrupt(vi, 0x10);
if(code < 0)
return -1;
if((vi->vms.regs.eax & 0xFFFF) != 0x4F && (oldax & 0xFF00) == 0x4F00) {
ErrorF("Int 10h (0x%04X) failed: 0x%04X",
oldax, vi->vms.regs.eax & 0xFFFF);
if((oldax & 0xFF00) == 0x4F00) {
switch((vi->vms.regs.eax & 0xFF00)>>8) {
case 0:
ErrorF(" (success)\n");
return 0;
case 1:
ErrorF(" (function call failed)\n");
break;
case 2:
ErrorF(" (function not supported on this hardware)\n");
break;
case 3:
ErrorF(" (function call invalid in this video mode)\n");
break;
default:
ErrorF(" (unknown error)\n");
break;
} return -1;
} else {
ErrorF("\n");
}
}
return code;
}
int
VbeDoInterruptE6(Vm86InfoPtr vi)
{
int code;
int oldax;
oldax = vi->vms.regs.eax & 0xffff;
code = Vm86DoPOST (vi);
ErrorF("POST (0x%04X): 0x%04X\n",
oldax, vi->vms.regs.eax & 0xffff);
return code;
}

165
hw/kdrive/vesa/vbe.h
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@ -1,165 +0,0 @@
/*
Copyright (c) 2000 by Juliusz Chroboczek
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifndef _VBE_H
#define _VBE_H
#define VBE_WINDOW_RELOCATE 1
#define VBE_WINDOW_READ 2
#define VBE_WINDOW_WRITE 4
typedef struct _VbeInfoBlock {
U8 VbeSignature[4]; /* VBE Signature */
U16 VbeVersion; /* VBE Version */
U32 OemStringPtr; /* Pointer to OEM String */
U8 Capabilities[4]; /* Capabilities of graphics controller */
U32 VideoModePtr; /* Pointer to VideoModeList */
U16 TotalMemory; /* Number of 64kb memory blocks */
/* Added for VBE 2.0 */
U16 OemSoftwareRev; /* VBE implementation Software revision */
U32 OemVendorNamePtr; /* Pointer to Vendor Name String */
U32 OemProductNamePtr; /* Pointer to Product Name String */
U32 OemProductRevPtr; /* Pointer to Product Revision String */
U8 Reserved[222]; /* Reserved for VBE implementation */
U8 OemData[256]; /* Data Area for OEM Strings*/
} __attribute__((packed)) VbeInfoBlock;
typedef struct _VbeModeInfoBlock {
/* Mandatory information for all VBE revisions */
U16 ModeAttributes; /* mode attributes */
U8 WinAAttributes; /* window A attributes */
U8 WinBAttributes; /* window B attributes */
U16 WinGranularity; /* window granularity */
U16 WinSize; /* window size */
U16 WinASegment; /* window A start segment */
U16 WinBSegment; /* window B start segment */
U32 WinFuncPtr; /* pointer to window function */
U16 BytesPerScanLine; /* bytes per scan line */
/* Mandatory information for VBE 1.2 and above */
U16 XResolution; /* horizontal resolution */
U16 YResolution; /* vertical resolution */
U8 XCharSize; /* character cell width in pixels */
U8 YCharSize; /* character cell height in pixels */
U8 NumberOfPlanes; /* number of memory planes */
U8 BitsPerPixel; /* bits per pixel */
U8 NumberOfBanks; /* number of banks */
U8 MemoryModel; /* memory model type */
U8 BankSize; /* bank size in KB */
U8 NumberOfImagePages; /* number of images */
U8 Reserved; /* reserved for page function */
/* Direct Color fields (required for direct/6 and YUV/7 memory models) */
U8 RedMaskSize; /* size of direct color red mask in bits */
U8 RedFieldPosition; /* bit position of lsb of red mask */
U8 GreenMaskSize; /* size of direct color green mask in bits */
U8 GreenFieldPosition; /* bit position of lsb of green mask */
U8 BlueMaskSize; /* size of direct color blue mask in bits */
U8 BlueFieldPosition; /* bit position of lsb of blue mask */
U8 RsvdMaskSize; /* size of direct color reserved mask bits*/
U8 RsvdFieldPosition; /* bit position of lsb of reserved mask */
U8 DirectColorModeInfo; /* direct color mode attributes */
/* Mandatory information for VBE 2.0 and above */
U32 PhysBasePtr; /* physical address for flat memory fb */
U32 OffScreenMemOffset; /* pointer to start of off screen memory */
U16 OffScreenMemSize; /* amount of off screen memory in 1k units */
U8 Reserved2[206]; /* remainder of ModeInfoBlock */
} __attribute__((packed)) VbeModeInfoBlock;
typedef struct _VbeInfoRec {
U8 palette_format;
int palette_wait;
int windowA_offset;
int windowB_offset;
int window_size;
int last_window;
VbeModeInfoBlock vmib;
} VbeInfoRec, *VbeInfoPtr;
typedef struct _SupVbeInfoBlock {
U8 SupVbeSignature[7]; /* Supplemental VBE Signature */
U16 SupVbeVersion; /* Supplemental VBE Version*/
U8 SupVbeSubFunc[8]; /* Bitfield of supported subfunctions */
U16 OemSoftwareRev; /* OEM Software revision */
U32 OemVendorNamePtr; /* Pointer to Vendor Name String */
U32 OemProductNamePtr; /* Pointer to Product Name String */
U32 OemProductRevPtr; /* Pointer to Product Revision String */
U32 OemStringPtr; /* Pointer to OEM String */
U8 Reserved[221]; /* Reserved */
} __attribute__((packed)) SupVbeInfoBlock;
int
VbeGetVib (Vm86InfoPtr vi, VbeInfoBlock *vib);
int
VbeGetVmib (Vm86InfoPtr vi, int mode, VbeModeInfoBlock *vmib);
void
VbeReportInfo (Vm86InfoPtr vi);
int
VbeGetNmode (Vm86InfoPtr vi);
int
VbeGetModes (Vm86InfoPtr vi, VesaModePtr modes, int nmode);
VbeInfoPtr
VbeInit (Vm86InfoPtr vi);
void
VbeCleanup (Vm86InfoPtr vi, VbeInfoPtr vbe);
int
VbeSetMode (Vm86InfoPtr vi, VbeInfoPtr vbe, int mode, int linear, int direct);
int
VbeGetMode(Vm86InfoPtr vi, int *mode);
void *
VbeMapFramebuffer(Vm86InfoPtr vi, VbeInfoPtr vbe, int mode, int *ret_size, CARD32 *ret_phys);
void
VbeUnmapFramebuffer(Vm86InfoPtr vi, VbeInfoPtr vbe, int mode, void *fb);
int
VbeSetPalette(Vm86InfoPtr vi, VbeInfoPtr vbe, int first, int number, U8 *entries);
int
VbeGetPalette(Vm86InfoPtr vi, VbeInfoPtr vbe, int first, int number, U8 *entries);
int
VbeSetPaletteOptions(Vm86InfoPtr vi, VbeInfoPtr vbe, U8 bits, int wait);
void *
VbeSetWindow(Vm86InfoPtr vi, VbeInfoPtr vbe, int offset, int purpose, int *size_return);
Bool
VbeDPMS(Vm86InfoPtr vi, int mode);
int
VbeDoInterrupt10(Vm86InfoPtr vi);
Bool
VbeBoot(Vm86InfoPtr vi);
int
VbeDoInterruptE6(Vm86InfoPtr vi);
#endif

1819
hw/kdrive/vesa/vesa.c
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295
hw/kdrive/vesa/vesa.h
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/*
Copyright (c) 2000 by Juliusz Chroboczek
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifndef _VESA_H_
#define _VESA_H_
#include "kdrive.h"
#include "shadow.h"
#include "vm86.h"
#ifdef RANDR
#include "randrstr.h"
#endif
#define VESA_TEXT_SAVE (64*1024)
#define MODE_SUPPORTED 0x01
#define MODE_COLOUR 0x08
#define MODE_GRAPHICS 0x10
#define MODE_VGA 0x20
#define MODE_LINEAR 0x80
#define MODE_DIRECT 0x1
#define MEMORY_TEXT 0
#define MEMORY_CGA 1
#define MEMORY_HERCULES 2
#define MEMORY_PLANAR 3
#define MEMORY_PSEUDO 4
#define MEMORY_NONCHAIN 5
#define MEMORY_DIRECT 6
#define MEMORY_YUV 7
typedef struct _VesaMode {
int mode; /* mode number */
int vbe; /* a VBE mode */
int ModeAttributes; /* mode attributes */
int NumberOfPlanes; /* number of memory planes */
int BitsPerPixel; /* bits per pixel */
int MemoryModel; /* memory model type */
int RedMaskSize; /* size of direct color red mask in bits */
int RedFieldPosition; /* bit position of lsb of red mask */
int GreenMaskSize; /* size of direct color green mask in bits */
int GreenFieldPosition; /* bit position of lsb of green mask */
int BlueMaskSize; /* size of direct color blue mask in bits */
int BlueFieldPosition; /* bit position of lsb of blue mask */
int RsvdMaskSize; /* size of direct color reserved mask bits*/
int RsvdFieldPosition; /* bit position of lsb of reserved mask */
int DirectColorModeInfo; /* direct color mode attributes */
int XResolution; /* horizontal resolution */
int YResolution; /* vertical resolution */
int BytesPerScanLine; /* bytes per scan line */
} VesaModeRec, *VesaModePtr;
#include "vbe.h"
#include "vga.h"
typedef struct _VesaCardPriv {
int vbe;
VesaModePtr modes;
int nmode;
Vm86InfoPtr vi;
int vga_palette;
int old_vbe_mode;
int old_vga_mode;
VbeInfoPtr vbeInfo;
char text[VESA_TEXT_SAVE];
CARD8 cmap[256*4];
} VesaCardPrivRec, *VesaCardPrivPtr;
#define VESA_LINEAR 0
#define VESA_WINDOWED 1
#define VESA_PLANAR 2
#define VESA_MONO 3
typedef struct _VesaScreenPriv {
VesaModeRec mode;
Bool shadow;
Rotation randr;
int mapping;
int origDepth;
void *fb;
int fb_size;
CARD32 fb_phys;
PixmapPtr pShadow;
Bool mapped;
} VesaScreenPrivRec, *VesaScreenPrivPtr;
extern int vesa_video_mode;
extern Bool vesa_force_mode;
void
vesaReportMode (VesaModePtr mode);
VesaModePtr
vesaGetModes (Vm86InfoPtr vi, int *ret_nmode);
void
vesaTestMode (void);
void *
vesaSetWindowPlanar(ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size);
void *
vesaSetWindowLinear (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size);
void *
vesaSetWindowWindowed (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size);
void *
vesaWindowPlanar (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size,
void *closure);
void *
vesaWindowLinear (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size,
void *closure);
void *
vesaWindowWindowed (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size,
void *closure);
void *
vesaWindowCga (ScreenPtr pScreen,
CARD32 row,
CARD32 offset,
int mode,
CARD32 *size,
void *closure);
void
vesaUpdateMono (ScreenPtr pScreen,
shadowBufPtr pBuf);
Bool
vesaCreateColormap16 (ColormapPtr pmap);
void
vesaSetScreenSizes (ScreenPtr pScreen);
Bool
vesaSetShadow (ScreenPtr pScreen);
void
vesaListModes(void);
Bool
vesaInitialize(KdCardInfo *card, VesaCardPrivPtr priv);
Bool
vesaCardInit(KdCardInfo *card);
int
vesaDepth (VesaModePtr mode);
Bool
vesaModeGood (KdScreenInfo *screen,
VesaModePtr a);
int
vesaSizeError (KdScreenInfo *screen,
VesaModePtr a);
Bool
vesaModeBetter (KdScreenInfo *screen,
VesaModePtr a,
VesaModePtr b);
VesaModePtr
vesaSelectMode (KdScreenInfo *screen);
Bool
vesaInitialize (KdCardInfo *card, VesaCardPrivPtr priv);
Bool
vesaScreenInitialize (KdScreenInfo *screen, VesaScreenPrivPtr pscr);
Bool
vesaScreenInit(KdScreenInfo *screen);
PixmapPtr
vesaGetPixmap (ScreenPtr pScreen);
Bool
vesaInitScreen(ScreenPtr pScreen);
Bool
vesaFinishInitScreen(ScreenPtr pScreen);
Bool
vesaCreateResources (ScreenPtr pScreen);
Bool
vesaSetMode (ScreenPtr pScreen,
VesaModePtr mode);
Bool
vesaEnable(ScreenPtr pScreen);
Bool
vesaDPMS (ScreenPtr pScreen, int mode);
void
vesaDisable(ScreenPtr pScreen);
void
vesaPreserve(KdCardInfo *card);
void
vesaRestore(KdCardInfo *card);
void
vesaCardFini(KdCardInfo *card);
void
vesaScreenFini(KdScreenInfo *screen);
int
vesaSetPalette(VesaCardPrivPtr priv, int first, int number, U8 *entries);
int
vesaGetPalette(VesaCardPrivPtr priv, int first, int number, U8 *entries);
void
vesaPutColors (ScreenPtr pScreen, int fb, int n, xColorItem *pdefs);
void
vesaGetColors (ScreenPtr pScreen, int fb, int n, xColorItem *pdefs);
void
vesaUseMsg (void);
int
vesaProcessArgument (int argc, char **argv, int i);
#ifdef RANDR
Bool
vesaRandRGetInfo (ScreenPtr pScreen, Rotation *rotations);
Bool
vesaRandRSetConfig (ScreenPtr pScreen,
Rotation randr,
int rate,
RRScreenSizePtr pSize);
Bool
vesaRandRInit (ScreenPtr pScreen);
#endif
Bool
toshibaDPMS (ScreenPtr pScreen, int mode);
#endif /* _VESA_H_ */

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hw/kdrive/vesa/vesainit.c
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/*
Copyright (c) 2000 by Juliusz Chroboczek
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "vesa.h"
const KdCardFuncs vesaFuncs = {
vesaCardInit, /* cardinit */
vesaScreenInit, /* scrinit */
vesaInitScreen, /* initScreen */
vesaFinishInitScreen, /* finishInitScreen */
vesaCreateResources, /* createRes */
vesaPreserve, /* preserve */
vesaEnable, /* enable */
vesaDPMS, /* dpms */
vesaDisable, /* disable */
vesaRestore, /* restore */
vesaScreenFini, /* scrfini */
vesaCardFini, /* cardfini */
0, /* initCursor */
0, /* enableCursor */
0, /* disableCursor */
0, /* finiCursor */
0, /* recolorCursor */
0, /* initAccel */
0, /* enableAccel */
0, /* disableAccel */
0, /* finiAccel */
vesaGetColors, /* getColors */
vesaPutColors, /* putColors */
};
void
InitCard(char *name)
{
KdCardAttr attr;
KdCardInfoAdd((KdCardFuncs *) &vesaFuncs, &attr, 0);
}
void
InitOutput (ScreenInfo *pScreenInfo, int argc, char **argv)
{
KdInitOutput (pScreenInfo, argc, argv);
}
void
InitInput (int argc, char **argv)
{
KdOsAddInputDrivers();
KdInitInput();
}
void
ddxUseMsg (void)
{
KdUseMsg();
vesaUseMsg();
}
int
ddxProcessArgument (int argc, char **argv, int i)
{
int ret;
if (!(ret = vesaProcessArgument (argc, argv, i)))
ret = KdProcessArgument(argc, argv, i);
return ret;
}

242
hw/kdrive/vesa/vga.c
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@ -1,242 +0,0 @@
/*
* Copyright © 2000 Keith Packard
*
* 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 name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "vesa.h"
static const VesaModeRec vgaModes[] = {
{
6, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_LINEAR,
1, 1, MEMORY_PLANAR,
0, 0, 0, 0, 0, 0, 0, 0, 0,
640, 200, 80,
},
{
0xd, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
4, 4, MEMORY_PLANAR,
0, 0, 0, 0, 0, 0, 0, 0, 0,
320, 200, 40,
},
{
0xe, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
4, 4, MEMORY_PLANAR,
0, 0, 0, 0, 0, 0, 0, 0, 0,
640, 200, 80,
},
{
0x10, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
4, 4, MEMORY_PLANAR,
0, 0, 0, 0, 0, 0, 0, 0, 0,
640, 350, 80,
},
{
0x11, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_LINEAR,
1, 1, MEMORY_PLANAR,
0, 0, 0, 0, 0, 0, 0, 0, 0,
640, 480, 80,
},
{
0x12, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
4, 4, MEMORY_PLANAR,
0, 0, 0, 0, 0, 0, 0, 0, 0,
640, 480, 80,
},
{
0x13, 0,
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR | MODE_LINEAR,
8, 8, MEMORY_PSEUDO,
0, 0, 0, 0, 0, 0, 0, 0, 0,
320, 200, 320,
},
};
#define NUM_VGA_MODE (sizeof vgaModes / sizeof vgaModes[0])
int
VgaGetNmode (Vm86InfoPtr vi)
{
return NUM_VGA_MODE;
}
int
VgaGetModes (Vm86InfoPtr vi, VesaModePtr mode, int nmode)
{
if (nmode > NUM_VGA_MODE)
nmode = NUM_VGA_MODE;
memcpy (mode, vgaModes, nmode * sizeof (VesaModeRec));
return nmode;
}
int
VgaSetMode(Vm86InfoPtr vi, int mode)
{
int code;
vi->vms.regs.eax = mode & 0x7f;
code = Vm86DoInterrupt (vi, 0x10);
if(code < 0)
return -1;
return 0;
}
int
VgaGetMode (Vm86InfoPtr vi, int *mode)
{
*mode = Vm86Memory (vi, 0x449);
return 0;
}
void
VgaSetWritePlaneMask(Vm86InfoPtr vi, int mask)
{
asm volatile ("outb %b0,%w1" : : "a" (2), "d" (0x3c4));
asm volatile ("outb %b0,%w1" : : "a" (mask), "d" (0x3c5));
}
void
VgaSetReadPlaneMap(Vm86InfoPtr vi, int map)
{
asm volatile ("outb %b0,%w1" : : "a" (4), "d" (0x3ce));
asm volatile ("outb %b0,%w1" : : "a" (map), "d" (0x3cf));
}
int
VgaSetPalette(Vm86InfoPtr vi, int first, int number, U8 *entries)
{
U8 *palette_scratch;
int mark;
int palette_base;
int i, j, code;
if(number == 0)
return 0;
if(first < 0 || number < 0 || first + number > 256) {
ErrorF("Cannot set %d, %d palette entries\n", first, number);
return -1;
}
mark = Vm86MarkMemory (vi);
palette_base = Vm86AllocateMemory (vi, 3 * 256);
palette_scratch = &LM(vi, palette_base);
vi->vms.regs.eax = 0x1012;
vi->vms.regs.ebx = first;
vi->vms.regs.ecx = number;
vi->vms.regs.es = POINTER_SEGMENT(palette_base);
vi->vms.regs.edx = POINTER_OFFSET(palette_base);
j = 0;
i = 0;
while (number--)
{
palette_scratch[j++] = entries[i++] >> 2;
palette_scratch[j++] = entries[i++] >> 2;
palette_scratch[j++] = entries[i++] >> 2;
i++;
}
code = Vm86DoInterrupt(vi, 0x10);
Vm86ReleaseMemory (vi, mark);
if(code < 0)
return -1;
return 0;
}
int
VgaGetPalette(Vm86InfoPtr vi, int first, int number, U8 *entries)
{
U8 *palette_scratch;
int mark;
int palette_base;
int i, j, code;
if(number == 0)
return 0;
if(first < 0 || number < 0 || first + number > 256) {
ErrorF("Cannot get %d, %d palette entries\n", first, number);
return -1;
}
mark = Vm86MarkMemory (vi);
palette_base = Vm86AllocateMemory (vi, 3 * 256);
palette_scratch = &LM(vi, palette_base);
vi->vms.regs.eax = 0x1017;
vi->vms.regs.ebx = first;
vi->vms.regs.ecx = number;
vi->vms.regs.es = POINTER_SEGMENT(palette_base);
vi->vms.regs.edx = POINTER_OFFSET(palette_base);
code = VbeDoInterrupt10(vi);
if(code < 0)
return -1;
j = 0;
i = 0;
while (number--)
{
entries[i++] = palette_scratch[j++] << 2;
entries[i++] = palette_scratch[j++] << 2;
entries[i++] = palette_scratch[j++] << 2;
entries[i++] = 0;
}
Vm86ReleaseMemory (vi, mark);
return 0;
}
#define VGA_FB(vm) ((vm) < 8 ? 0xb8000 : 0xa0000)
void *
VgaSetWindow (Vm86InfoPtr vi, int vmode, int bytes, int mode, int *size)
{
*size = 0x10000 - bytes;
return &LM(vi,VGA_FB(vmode) + bytes);
}
void *
VgaMapFramebuffer (Vm86InfoPtr vi, int vmode, int *size, CARD32 *ret_phys)
{
if (VGA_FB(vmode) == 0xa0000)
*size = 0x10000;
else
*size = 0x4000;
*ret_phys = VGA_FB(vmode);
return &LM(vi,VGA_FB(vmode));
}
void
VgaUnmapFramebuffer (Vm86InfoPtr vi)
{
}

59
hw/kdrive/vesa/vga.h
View File

@ -1,59 +0,0 @@
/*
* Copyright © 2000 Keith Packard
*
* 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 name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
#ifndef _VGA_H_
#define _VGA_H_
int
VgaGetNmode (Vm86InfoPtr vi);
int
VgaGetModes (Vm86InfoPtr vi, VesaModePtr mode, int nmode);
int
VgaSetMode(Vm86InfoPtr vi, int mode);
int
VgaGetMode (Vm86InfoPtr vi, int *mode);
void
VgaSetWritePlaneMask(Vm86InfoPtr vi, int mask);
void
VgaSetReadPlaneMap(Vm86InfoPtr vi, int map);
int
VgaSetPalette(Vm86InfoPtr vi, int first, int number, U8 *entries);
int
VgaGetPalette(Vm86InfoPtr vi, int first, int number, U8 *entries);
void *
VgaSetWindow (Vm86InfoPtr vi, int vmode, int bytes, int mode, int *size);
void *
VgaMapFramebuffer (Vm86InfoPtr vi, int vmode, int *size, CARD32 *phys);
void
VgaUnmapFramebuffer (Vm86InfoPtr vi);
#endif /* _VGA_H_ */

764
hw/kdrive/vesa/vm86.c
View File

@ -1,764 +0,0 @@
/*
* Copyright © 2000 Keith Packard
*
* 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 name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
/*
Copyright (c) 2000 by Juliusz Chroboczek
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "vm86.h"
#define PUSHW(vi, i) \
{ vi->vms.regs.esp -= 2;\
LMW(vi,MAKE_POINTER(vi->vms.regs.ss, vi->vms.regs.esp)) = i;}
static int vm86old(struct vm86_struct *vms);
static int vm86_loop(Vm86InfoPtr vi);
static const U8 rev_ints[32] =
{ 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0x80,
};
static const U8 retcode_data[2] =
{ 0xCD, 0xFF };
Vm86InfoPtr
Vm86Setup(int mapHoles)
{
int devmem = -1, devzero = -1;
void *magicMem, *loMem, *hiMem;
void *hole1, *hole2;
U32 stack_base, ret_code;
Vm86InfoPtr vi = NULL;
devmem = open("/dev/mem", O_RDWR);
if(devmem < 0) {
perror("open /dev/mem");
goto fail;
}
devzero = open("/dev/zero", O_RDWR);
if(devzero < 0) {
perror("open /dev/zero");
goto fail;
}
magicMem = MAP_FAILED;
loMem = MAP_FAILED;
hiMem = MAP_FAILED;
hole1 = MAP_FAILED;
hole2 = MAP_FAILED;
magicMem = mmap((void*)MAGICMEM_BASE, MAGICMEM_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_FIXED, devmem, MAGICMEM_BASE);
if(magicMem == MAP_FAILED) {
ErrorF("Couldn't map magic memory\n");
goto unmapfail;
}
if(mapHoles) {
hole1 = mmap((void*)HOLE1_BASE, HOLE1_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_FIXED, devzero, HOLE1_BASE);
if(hole1 == MAP_FAILED) {
ErrorF("Couldn't map first hole\n");
goto unmapfail;
}
}
loMem = mmap((void*)LOMEM_BASE, LOMEM_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_FIXED, devzero, LOMEM_BASE);
if(loMem == MAP_FAILED) {
ErrorF("Couldn't map low memory\n");
munmap(magicMem, MAGICMEM_SIZE);
goto unmapfail;
}
if(mapHoles) {
hole2 = mmap((void*)HOLE2_BASE, HOLE2_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_FIXED, devzero, HOLE2_BASE);
if(hole2 == MAP_FAILED) {
ErrorF("Couldn't map first hole\n");
goto unmapfail;
}
}
hiMem = mmap((void*)HIMEM_BASE, HIMEM_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_SHARED | MAP_FIXED,
devmem, HIMEM_BASE);
if(hiMem == MAP_FAILED) {
ErrorF("Couldn't map high memory\n");
goto unmapfail;
}
vi = xalloc(sizeof(Vm86InfoRec));
if (!vi)
goto unmapfail;
vi->magicMem = magicMem;
vi->hole1 = hole1;
vi->loMem = loMem;
vi->hole2 = hole2;
vi->hiMem = hiMem;
vi->brk = LOMEM_BASE;
stack_base = Vm86AllocateMemory(vi, STACK_SIZE);
if(stack_base == ALLOC_FAIL)
goto unmapfail;
ret_code = Vm86AllocateMemory(vi, sizeof(retcode_data));
if(ret_code == ALLOC_FAIL)
goto unmapfail;
vi->stack_base = stack_base;
vi->ret_code = ret_code;
memset(&vi->vms, 0, sizeof(struct vm86_struct));
vi->vms.flags = 0;
vi->vms.screen_bitmap = 0;
vi->vms.cpu_type = CPU_586;
memcpy(&vi->vms.int_revectored, rev_ints, sizeof(rev_ints));
iopl(3);
if(devmem >= 0)
close(devmem);
if(devzero >= 0)
close(devzero);
return vi;
unmapfail:
if(magicMem != MAP_FAILED) munmap(magicMem, MAGICMEM_SIZE);
if(hole1 != MAP_FAILED) munmap(hole1, HOLE1_SIZE);
if(loMem != MAP_FAILED) munmap(loMem, LOMEM_SIZE);
if(hole2 != MAP_FAILED) munmap(hole2, HOLE2_SIZE);
if(hiMem != MAP_FAILED) munmap(hiMem, HIMEM_SIZE);
fail:
if(devmem >= 0)
close(devmem);
if(devzero >= 0)
close(devzero);
if(vi)
xfree(vi);
return NULL;
}
void
Vm86Cleanup(Vm86InfoPtr vi)
{
if(vi->magicMem != MAP_FAILED) munmap(vi->magicMem, MAGICMEM_SIZE);
if(vi->hole1 != MAP_FAILED) munmap(vi->hole1, HOLE1_SIZE);
if(vi->loMem != MAP_FAILED) munmap(vi->loMem, LOMEM_SIZE);
if(vi->hole2 != MAP_FAILED) munmap(vi->hole2, HOLE2_SIZE);
if(vi->hiMem != MAP_FAILED) munmap(vi->hiMem, HIMEM_SIZE);
xfree(vi);
}
int
Vm86DoInterrupt(Vm86InfoPtr vi, int num)
{
U16 seg, off;
int code;
if(num < 0 || num>256) {
ErrorF("Interrupt %d doesn't exist\n");
return -1;
}
seg = MMW(vi,num * 4 + 2);
off = MMW(vi,num * 4);
if(MAKE_POINTER(seg, off) < ROM_BASE ||
MAKE_POINTER(seg, off) >= ROM_BASE + ROM_SIZE) {
ErrorF("Interrupt pointer (seg %x off %x) doesn't point at ROM\n",
seg, off);
return -1;
}
memcpy(&(LM(vi,vi->ret_code)), retcode_data, sizeof(retcode_data));
vi->vms.regs.eflags = IF_MASK | IOPL_MASK;
vi->vms.regs.ss = POINTER_SEGMENT(vi->stack_base);
vi->vms.regs.esp = STACK_SIZE;
PUSHW(vi, IF_MASK | IOPL_MASK);
PUSHW(vi, POINTER_SEGMENT(vi->ret_code));
PUSHW(vi, POINTER_OFFSET(vi->ret_code));
vi->vms.regs.cs = seg;
vi->vms.regs.eip = off;
OsBlockSignals ();
code = vm86_loop(vi);
OsReleaseSignals ();
if(code != 0)
return -1;
else
return 0;
}
int
Vm86DoPOST(Vm86InfoPtr vi)
{
U16 seg, off;
int code;
seg = 0xC000;
off = 3;
if(MAKE_POINTER(seg, off) < ROM_BASE ||
MAKE_POINTER(seg, off) >= ROM_BASE + ROM_SIZE) {
ErrorF("BIOS pointer (seg %x off %x) doesn't point at ROM\n",
seg, off);
return -1;
}
memcpy(&(LM(vi,vi->ret_code)), retcode_data, sizeof(retcode_data));
vi->vms.regs.ss = POINTER_SEGMENT(vi->stack_base);
vi->vms.regs.esp = STACK_SIZE;
PUSHW(vi, POINTER_SEGMENT(vi->ret_code));
PUSHW(vi, POINTER_OFFSET(vi->ret_code));
vi->vms.regs.cs = seg;
vi->vms.regs.eip = off;
OsBlockSignals ();
code = vm86_loop(vi);
OsReleaseSignals ();
if(code != 0)
return -1;
else
return 0;
}
#define DEBUG_VBE 0
#if DEBUG_VBE
#define DBG(x) ErrorF x; usleep(10*1000)
#else
#define DBG(x)
#endif
static inline U8
vm86_inb(U16 port)
{
U8 value;
if (port != 0x3da)
{
DBG(("inb 0x%04x", port));
}
asm volatile ("inb %w1,%b0" : "=a" (value) : "d" (port));
if (port != 0x3da)
{
DBG((" = 0x%02x\n", value));
}
return value;
}
static inline U16
vm86_inw(U16 port)
{
U16 value;
DBG(("inw 0x%04x", port));
asm volatile ("inw %w1,%w0" : "=a" (value) : "d" (port));
DBG((" = 0x%04x\n", value));
return value;
}
static inline U32
vm86_inl(U16 port)
{
U32 value;
DBG(("inl 0x%04x", port));
asm volatile ("inl %w1,%0" : "=a" (value) : "d" (port));
DBG((" = 0x%08x\n", value));
return value;
}
static inline void
vm86_outb(U16 port, U8 value)
{
#if 0
static U8 CR;
if (port == 0x3d4)
CR = value;
if (port == 0x3d5 && CR == 0xa4)
{
DBG(("outb 0x%04x = 0x%02x (skipped)\n", port, value));
return;
}
#endif
DBG(("outb 0x%04x = 0x%02x\n", port, value));
asm volatile ("outb %b0,%w1" : : "a" (value), "d" (port));
}
static inline void
vm86_outw(U16 port, U16 value)
{
DBG(("outw 0x%04x = 0x%04x\n", port, value));
asm volatile ("outw %w0,%w1" : : "a" (value), "d" (port));
}
static inline void
vm86_outl(U16 port, U32 value)
{
DBG(("outl 0x%04x = 0x%08x\n", port, value));
asm volatile ("outl %0,%w1" : : "a" (value), "d" (port));
}
#define SEG_CS 1
#define SEG_DS 2
#define SEG_ES 3
#define SEG_SS 4
#define SEG_GS 5
#define SEG_FS 6
#define REP 1
#define REPNZ 2
#define SET_8(_x, _y) (_x) = ((_x) & ~0xFF) | ((_y) & 0xFF);
#define SET_16(_x, _y) (_x) = ((_x) & ~0xFFFF) | ((_y) & 0xFFFF);
#define INC_IP(_i) SET_16(regs->eip, (regs->eip + _i))
#define AGAIN INC_IP(1); goto again;
static int
vm86_emulate(Vm86InfoPtr vi)
{
struct vm86_regs *regs = &vi->vms.regs;
U8 opcode;
int size;
int pref_seg = 0, pref_rep = 0, pref_66 = 0, pref_67 = 0;
again:
if(!Vm86IsMemory(vi, MAKE_POINTER(regs->cs, regs->eip))) {
ErrorF("Trying to execute unmapped memory\n");
return -1;
}
opcode = Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip));
switch(opcode) {
case 0x2E: pref_seg = SEG_CS; AGAIN;
case 0x3E: pref_seg = SEG_DS; AGAIN;
case 0x26: pref_seg = SEG_ES; AGAIN;
case 0x36: pref_seg = SEG_SS; AGAIN;
case 0x65: pref_seg = SEG_GS; AGAIN;
case 0x64: pref_seg = SEG_FS; AGAIN;
case 0x66: pref_66 = 1; AGAIN;
case 0x67: pref_67 = 1; AGAIN;
case 0xF2: pref_rep = REPNZ; AGAIN;
case 0xF3: pref_rep = REP; AGAIN;
case 0xEC: /* IN AL, DX */
SET_8(regs->eax, vm86_inb(regs->edx & 0xFFFF));
INC_IP(1);
break;
case 0xED: /* IN AX, DX */
if(pref_66)
regs->eax = vm86_inl(regs->edx & 0xFFFF);
else
SET_16(regs->eax, vm86_inw(regs->edx & 0xFFFF));
INC_IP(1);
break;
case 0xE4: /* IN AL, imm8 */
SET_8(regs->eax,
vm86_inb(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1))));
INC_IP(2);
break;
case 0xE5: /* IN AX, imm8 */
if(pref_66)
regs->eax =
vm86_inl(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)));
else
SET_16(regs->eax,
vm86_inw(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1))));
INC_IP(2);
break;
case 0x6C: /* INSB */
case 0x6D: /* INSW */
if(opcode == 0x6C) {
Vm86WriteMemory(vi, MAKE_POINTER(regs->es, regs->edi),
vm86_inb(regs->edx & 0xFFFF));
size = 1;
} else if(pref_66) {
Vm86WriteMemoryL(vi, MAKE_POINTER(regs->es, regs->edi),
vm86_inl(regs->edx & 0xFFFF));
size = 4;
} else {
Vm86WriteMemoryW(vi, MAKE_POINTER(regs->es, regs->edi),
vm86_inw(regs->edx & 0xFFFF));
size = 2;
}
if(regs->eflags & (1<<10))
regs->edi -= size;
else
regs->edi += size;
if(pref_rep) {
if(pref_66) {
regs->ecx--;
if(regs->ecx != 0)
goto again;
} else {
SET_16(regs->ecx, regs->ecx - 1);
if((regs->ecx & 0xFFFF) != 0)
goto again;
}
}
INC_IP(1);
break;
case 0xEE: /* OUT DX, AL */
vm86_outb(regs->edx & 0xFFFF, regs->eax & 0xFF);
INC_IP(1);
break;
case 0xEF: /* OUT DX, AX */
if(pref_66)
vm86_outl(regs->edx & 0xFFFF, regs->eax);
else
vm86_outw(regs->edx & 0xFFFF, regs->eax & 0xFFFF);
INC_IP(1);
break;
case 0xE6: /* OUT imm8, AL */
vm86_outb(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)),
regs->eax & 0xFF);
INC_IP(2);
break;
case 0xE7: /* OUT imm8, AX */
if(pref_66)
vm86_outl(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)),
regs->eax);
else
vm86_outw(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)),
regs->eax & 0xFFFF);
INC_IP(2);
break;
case 0x6E: /* OUTSB */
case 0x6F: /* OUTSW */
if(opcode == 0x6E) {
vm86_outb(regs->edx & 0xFFFF,
Vm86Memory(vi, MAKE_POINTER(regs->es, regs->edi)));
size = 1;
} else if(pref_66) {
vm86_outl(regs->edx & 0xFFFF,
Vm86Memory(vi, MAKE_POINTER(regs->es, regs->edi)));
size = 4;
} else {
vm86_outw(regs->edx & 0xFFFF,
Vm86Memory(vi, MAKE_POINTER(regs->es, regs->edi)));
size = 2;
}
if(regs->eflags & (1<<10))
regs->edi -= size;
else
regs->edi += size;
if(pref_rep) {
if(pref_66) {
regs->ecx--;
if(regs->ecx != 0)
goto again;
} else {
SET_16(regs->ecx, regs->ecx - 1);
if((regs->ecx & 0xFFFF) != 0)
goto again;
}
}
INC_IP(1);
break;
case 0x0F:
ErrorF("Hit 0F trap in VM86 code\n");
return -1;
case 0xF0:
ErrorF("Hit lock prefix in VM86 code\n");
return -1;
case 0xF4:
ErrorF("Hit HLT in VM86 code\n");
return -1;
default:
ErrorF("Unhandled GP fault in VM86 code (opcode = 0x%02X)\n",
opcode);
return -1;
}
return 0;
}
#undef SEG_CS
#undef SEG_DS
#undef SEG_ES
#undef SEG_SS
#undef SEG_GS
#undef SEG_FS
#undef REP
#undef REPNZ
#undef SET_8
#undef SET_16
#undef INC_IP
#undef AGAIN
static int
vm86_loop(Vm86InfoPtr vi)
{
int code;
while(1) {
code = vm86old(&vi->vms);
switch(VM86_TYPE(code)) {
case VM86_SIGNAL:
continue;
case VM86_UNKNOWN:
code = vm86_emulate(vi);
if(code < 0) {
Vm86Debug(vi);
return -1;
}
break;
case VM86_INTx:
if(VM86_ARG(code) == 0xFF)
return 0;
else {
PUSHW(vi, vi->vms.regs.eflags)
PUSHW(vi, vi->vms.regs.cs);
PUSHW(vi, vi->vms.regs.eip);
vi->vms.regs.cs = MMW(vi,VM86_ARG(code) * 4 + 2);
vi->vms.regs.eip = MMW(vi,VM86_ARG(code) * 4);
}
break;
case VM86_STI:
ErrorF("VM86 code enabled interrupts\n");
Vm86Debug(vi);
return -1;
default:
if(code < 0) {
if(errno == ENOSYS) {
ErrorF("No vm86 support. Are you running on AMD64?\n");
} else {
ErrorF("vm86 failed (%s).\n", strerror(errno));
Vm86Debug(vi);
}
} else {
ErrorF("Unexpected result code 0x%X from vm86\n", code);
Vm86Debug(vi);
}
return -1;
}
}
}
int
Vm86IsMemory(Vm86InfoPtr vi, U32 i)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
return 1;
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
return 1;
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
return 1;
else
return 0;
}
U8
Vm86Memory(Vm86InfoPtr vi, U32 i)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
return MM(vi, i);
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
return LM(vi, i);
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
return HM(vi, i);
else {
ErrorF("Reading unmapped memory at 0x%08X\n", i);
return 0;
}
}
U16
Vm86MemoryW(Vm86InfoPtr vi, U32 i)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
return MMW(vi, i);
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
return LMW(vi, i);
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
return HMW(vi, i);
else {
ErrorF("Reading unmapped memory at 0x%08X\n", i);
return 0;
}
}
U32
Vm86MemoryL(Vm86InfoPtr vi, U32 i)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
return MML(vi, i);
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
return LML(vi, i);
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
return HML(vi, i);
else {
ErrorF("Reading unmapped memory at 0x%08X\n", i);
return 0;
}
}
void
Vm86WriteMemory(Vm86InfoPtr vi, U32 i, U8 val)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
MM(vi, i) = val;
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
LM(vi, i) = val;
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
HM(vi, i) = val;
else {
ErrorF("Writing unmapped memory at 0x%08X\n", i);
}
}
void
Vm86WriteMemoryW(Vm86InfoPtr vi, U32 i, U16 val)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
MMW(vi, i) = val;
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
LMW(vi, i) = val;
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
HMW(vi, i) = val;
else {
ErrorF("Writing unmapped memory at 0x%08X\n", i);
}
}
void
Vm86WriteMemoryL(Vm86InfoPtr vi, U32 i, U32 val)
{
if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
MML(vi, i) = val;
else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
LML(vi, i) = val;
else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
HML(vi, i) = val;
else {
ErrorF("Writing unmapped memory at 0x%08X\n", i);
}
}
int
Vm86AllocateMemory(Vm86InfoPtr vi, int n)
{
int ret;
if(n<0) {
ErrorF("Asked to allocate negative amount of memory\n");
return vi->brk;
}
n = (n + 15) & ~15;
if(vi->brk + n > LOMEM_BASE + LOMEM_SIZE) {
ErrorF("Out of low memory\n");
exit(2);
}
ret = vi->brk;
vi->brk += n;
return ret;
}
int
Vm86MarkMemory (Vm86InfoPtr vi)
{
return vi->brk;
}
void
Vm86ReleaseMemory (Vm86InfoPtr vi, int mark)
{
vi->brk = mark;
}
static int
vm86old(struct vm86_struct *vm)
{
int res;
asm volatile (
"pushl %%ebx\n\t"
"movl %2, %%ebx\n\t"
"movl %1,%%eax\n\t"
"int $0x80\n\t"
"popl %%ebx"
: "=a" (res) : "n" (113), "r" (vm));
if(res < 0) {
errno = -res;
res = -1;
} else
errno = 0;
return res;
}
void
Vm86Debug(Vm86InfoPtr vi)
{
struct vm86_regs *regs = &vi->vms.regs;
int i;
ErrorF("eax=0x%08lX ebx=0x%08lX ecx=0x%08lX edx=0x%08lX\n",
regs->eax, regs->ebx, regs->ecx, regs->edx);
ErrorF("esi=0x%08lX edi=0x%08lX ebp=0x%08lX\n",
regs->esi, regs->edi, regs->ebp);
ErrorF("eip=0x%08lX esp=0x%08lX eflags=0x%08lX\n",
regs->eip, regs->esp, regs->eflags);
ErrorF("cs=0x%04lX ds=0x%04lX es=0x%04lX fs=0x%04lX gs=0x%04lX\n",
regs->cs, regs->ds, regs->es, regs->fs, regs->gs);
for(i=-7; i<8; i++) {
ErrorF(" %s%02X",
i==0?"->":"",
Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip + i)));
}
ErrorF("\n");
}
#ifdef NOT_IN_X_SERVER
static void
ErrorF(char *f, ...)
{
va_list args;
va_start(args, f);
vfprintf(stderr, f, args);
va_end(args);
}
#endif

173
hw/kdrive/vesa/vm86.h
View File

@ -1,173 +0,0 @@
/*
* Copyright © 2000 Keith Packard
*
* 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 name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
/*
Copyright (c) 2000 by Juliusz Chroboczek
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 THE
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifndef _VM86_H_
#define _VM86_H_
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/vm86.h>
#include <sys/io.h>
#ifdef NOT_IN_X_SERVER
#include <stdio.h>
#include <stdarg.h>
#include <malloc.h>
static void ErrorF(char*, ...);
#define xalloc(a) malloc(a)
#define xcalloc(a,b) calloc(a,b)
#define xfree(a) free(a)
#else
#include <X11/X.h>
#include <X11/Xproto.h>
#include <X11/Xos.h>
#include "os.h"
#endif
typedef unsigned char U8;
typedef unsigned short U16;
typedef unsigned int U32;
/* The whole addressable memory */
#define SYSMEM_BASE 0x00000
#define SYSMEM_SIZE 0x100000
/* Interrupt vectors and BIOS data area */
/* This is allocated privately from /dev/mem */
#define MAGICMEM_BASE 0x00000
#define MAGICMEM_SIZE 0x01000
/* The low memory, allocated privately from /dev/zero */
/* 64KB should be enough for anyone, as they used to say */
#define LOMEM_BASE 0x10000
#define LOMEM_SIZE 0x10000
/* The video memory and BIOS ROM, allocated shared from /dev/mem */
#define HIMEM_BASE 0xA0000
#define HIMEM_SIZE (SYSMEM_BASE + SYSMEM_SIZE - HIMEM_BASE)
#define HOLE1_BASE (MAGICMEM_BASE + MAGICMEM_SIZE)
#define HOLE1_SIZE (LOMEM_BASE - HOLE1_BASE)
#define HOLE2_BASE (LOMEM_BASE + LOMEM_SIZE)
#define HOLE2_SIZE (HIMEM_BASE - HOLE2_BASE)
/* The BIOS ROM */
#define ROM_BASE 0xC0000
#define ROM_SIZE 0x30000
#define STACK_SIZE 0x1000
#define POINTER_SEGMENT(ptr) (((unsigned int)ptr)>>4)
#define POINTER_OFFSET(ptr) (((unsigned int)ptr)&0x000F)
#define MAKE_POINTER(seg, off) (((((unsigned int)(seg))<<4) + (unsigned int)(off)))
#define MAKE_POINTER_1(lw) MAKE_POINTER(((lw)&0xFFFF0000)/0x10000, (lw)&0xFFFF)
#define ALLOC_FAIL ((U32)-1)
typedef struct _Vm86InfoRec {
void *magicMem, *loMem, *hiMem;
void *hole1, *hole2;
U32 brk;
struct vm86_struct vms;
U32 ret_code, stack_base;
} Vm86InfoRec, *Vm86InfoPtr;
#define LM(vi,i) (((char*)vi->loMem)[i-LOMEM_BASE])
#define LMW(vi,i) (*(U16*)(&LM(vi,i)))
#define LML(vi,i) (*(U32*)(&LM(vi,i)))
#define MM(vi,i) (((char*)vi->magicMem)[i-MAGICMEM_BASE])
#define MMW(vi,i) (*(U16*)(&MM(vi,i)))
#define MML(vi,i) (*(U32*)(&MM(vi,i)))
#define HM(vi,i) (((char*)vi->hiMem)[i-HIMEM_BASE])
#define HMW(vi,i) (*(U16*)(&MM(vi,i)))
#define HML(vi,i) (*(U32*)(&MM(vi,i)))
Vm86InfoPtr
Vm86Setup(int);
void
Vm86Cleanup(Vm86InfoPtr vi);
int
Vm86DoInterrupt(Vm86InfoPtr vi, int num);
int
Vm86DoPOST(Vm86InfoPtr vi);
int
Vm86IsMemory(Vm86InfoPtr vi, U32 i);
U8
Vm86Memory(Vm86InfoPtr, U32);
U16
Vm86MemoryW(Vm86InfoPtr, U32);
U32
Vm86MemoryL(Vm86InfoPtr, U32);
void
Vm86WriteMemory(Vm86InfoPtr, U32, U8);
void
Vm86WriteMemoryW(Vm86InfoPtr, U32, U16);
void
Vm86WriteMemoryL(Vm86InfoPtr, U32, U32);
int
Vm86AllocateMemory(Vm86InfoPtr, int);
int
Vm86MarkMemory (Vm86InfoPtr vi);
void
Vm86ReleaseMemory (Vm86InfoPtr vi, int mark);
void
Vm86Debug(Vm86InfoPtr vi);
#endif /* _VM86_H_ */