This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
XF86DGA2.c
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/* $XFree86: xc/lib/Xxf86dga/XF86DGA2.c,v 1.18 2001/08/17 13:27:51 dawes Exp $ */
/*
Copyright (c) 1995 Jon Tombs
Copyright (c) 1995,1996 The XFree86 Project, Inc
*/
/* THIS IS NOT AN X CONSORTIUM STANDARD */
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#ifdef __EMX__ /* needed here to override certain constants in X headers */
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#define INCL_DOS
#define INCL_DOSIOCTL
#include <os2.h>
#endif
#define NEED_EVENTS
#define NEED_REPLIES
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#include <X11/Xlibint.h>
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#include "../extensions/xf86dga.h"
#include "../extensions/xf86dgastr.h"
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#include "../extensions/Xext.h"
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#include "../extensions/extutil.h"
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#include <stdio.h>
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#if defined(ENABLE_FBCON) /* Needed for framebuffer console support */
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#include <sys/ioctl.h>
#include <linux/fb.h>
#endif
/* If you change this, change the Bases[] array below as well */
#define MAX_HEADS 16
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char *SDL_NAME (xdga_extension_name) = XF86DGANAME;
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static XExtensionInfo _xdga_info_data;
static XExtensionInfo *xdga_info = &_xdga_info_data;
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Bool SDL_NAME (XDGAMapFramebuffer) (int, char *, unsigned char *, CARD32,
CARD32, CARD32);
void SDL_NAME (XDGAUnmapFramebuffer) (int);
unsigned char *SDL_NAME (XDGAGetMappedMemory) (int);
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#define XDGACheckExtension(dpy,i,val) \
XextCheckExtension (dpy, i, SDL_NAME(xdga_extension_name), val)
/*****************************************************************************
* *
* private utility routines *
* *
*****************************************************************************/
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static int xdga_close_display (Display * dpy, XExtCodes * codes);
static Bool xdga_wire_to_event (Display * dpy, XEvent * event,
xEvent * wire_ev);
static Status xdga_event_to_wire (Display * dpy, XEvent * event,
xEvent * wire_ev);
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static XExtensionHooks xdga_extension_hooks = {
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NULL, /* create_gc */
NULL, /* copy_gc */
NULL, /* flush_gc */
NULL, /* free_gc */
NULL, /* create_font */
NULL, /* free_font */
xdga_close_display, /* close_display */
xdga_wire_to_event, /* wire_to_event */
xdga_event_to_wire, /* event_to_wire */
NULL, /* error */
NULL, /* error_string */
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static
XEXT_GENERATE_CLOSE_DISPLAY (xdga_close_display, xdga_info)
XEXT_GENERATE_FIND_DISPLAY (SDL_NAME (xdga_find_display), xdga_info,
"XFree86-DGA", &xdga_extension_hooks, 0, NULL)
static Status
xdga_event_to_wire (Display * dpy, XEvent * event, xEvent * wire_ev)
{
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return True;
}
static Bool
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xdga_wire_to_event (Display * dpy, XEvent * event, xEvent * wire_ev)
{
dgaEvent *wire = (dgaEvent *) wire_ev;
SDL_NAME (XDGAButtonEvent) * bevent;
SDL_NAME (XDGAKeyEvent) * kevent;
SDL_NAME (XDGAMotionEvent) * mevent;
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
XDGACheckExtension (dpy, info, False);
switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
case MotionNotify:
mevent = (SDL_NAME (XDGAMotionEvent) *) event;
mevent->type = wire->u.u.type & 0x7F;
mevent->serial = _XSetLastRequestRead (dpy, (xGenericReply *) wire);
mevent->display = dpy;
mevent->screen = wire->u.event.screen;
mevent->time = wire->u.event.time;
mevent->state = wire->u.event.state;
mevent->dx = wire->u.event.dx;
mevent->dy = wire->u.event.dy;
return True;
case ButtonPress:
case ButtonRelease:
bevent = (SDL_NAME (XDGAButtonEvent) *) event;
bevent->type = wire->u.u.type & 0x7F;
bevent->serial = _XSetLastRequestRead (dpy, (xGenericReply *) wire);
bevent->display = dpy;
bevent->screen = wire->u.event.screen;
bevent->time = wire->u.event.time;
bevent->state = wire->u.event.state;
bevent->button = wire->u.u.detail;
return True;
case KeyPress:
case KeyRelease:
kevent = (SDL_NAME (XDGAKeyEvent) *) event;
kevent->type = wire->u.u.type & 0x7F;
kevent->serial = _XSetLastRequestRead (dpy, (xGenericReply *) wire);
kevent->display = dpy;
kevent->screen = wire->u.event.screen;
kevent->time = wire->u.event.time;
kevent->state = wire->u.event.state;
kevent->keycode = wire->u.u.detail;
return True;
}
return False;
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Bool SDL_NAME (XDGAQueryExtension) (Display * dpy,
int *event_basep, int *error_basep)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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if (XextHasExtension (info)) {
*event_basep = info->codes->first_event;
*error_basep = info->codes->first_error;
return True;
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} else {
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}
}
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Bool SDL_NAME (XDGAQueryVersion) (Display * dpy,
int *majorVersion, int *minorVersion)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGAQueryVersionReply rep;
xXDGAQueryVersionReq *req;
XDGACheckExtension (dpy, info, False);
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LockDisplay (dpy);
GetReq (XDGAQueryVersion, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAQueryVersion;
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if (!_XReply (dpy, (xReply *) & rep, 0, xFalse)) {
UnlockDisplay (dpy);
SyncHandle ();
return False;
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}
*majorVersion = rep.majorVersion;
*minorVersion = rep.minorVersion;
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UnlockDisplay (dpy);
SyncHandle ();
if (*majorVersion >= 2) {
int i, j;
for (i = 0, j = info->codes->first_event;
i < XF86DGANumberEvents; i++, j++) {
XESetWireToEvent (dpy, j, xdga_wire_to_event);
XESetEventToWire (dpy, j, xdga_event_to_wire);
}
SDL_NAME (XDGASetClientVersion) (dpy);
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}
return True;
}
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Bool SDL_NAME (XDGASetClientVersion) (Display * dpy)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGASetClientVersionReq *req;
XDGACheckExtension (dpy, info, False);
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LockDisplay (dpy);
GetReq (XDGASetClientVersion, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASetClientVersion;
req->major = XDGA_MAJOR_VERSION;
req->minor = XDGA_MINOR_VERSION;
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UnlockDisplay (dpy);
SyncHandle ();
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return True;
}
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Bool SDL_NAME (XDGAOpenFramebuffer) (Display * dpy, int screen)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGAOpenFramebufferReply rep;
xXDGAOpenFramebufferReq *req;
char *deviceName = NULL;
Bool ret;
XDGACheckExtension (dpy, info, False);
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LockDisplay (dpy);
GetReq (XDGAOpenFramebuffer, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAOpenFramebuffer;
req->screen = screen;
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if (!_XReply (dpy, (xReply *) & rep, 0, xFalse)) {
UnlockDisplay (dpy);
SyncHandle ();
return False;
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if (rep.length) {
deviceName = Xmalloc (rep.length << 2);
_XRead (dpy, deviceName, rep.length << 2);
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ret = SDL_NAME (XDGAMapFramebuffer) (screen, deviceName,
(unsigned char *) (long) rep.mem1,
rep.size, rep.offset, rep.extra);
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if (deviceName)
Xfree (deviceName);
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UnlockDisplay (dpy);
SyncHandle ();
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return ret;
}
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void SDL_NAME (XDGACloseFramebuffer) (Display * dpy, int screen)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGACloseFramebufferReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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SDL_NAME (XDGAUnmapFramebuffer) (screen);
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LockDisplay (dpy);
GetReq (XDGACloseFramebuffer, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACloseFramebuffer;
req->screen = screen;
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UnlockDisplay (dpy);
SyncHandle ();
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}
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SDL_NAME (XDGAMode) * SDL_NAME (XDGAQueryModes) (Display * dpy,
int screen, int *num)
{
XExtDisplayInfo *dinfo = SDL_NAME (xdga_find_display) (dpy);
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xXDGAQueryModesReply rep;
xXDGAQueryModesReq *req;
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SDL_NAME (XDGAMode) * modes = NULL;
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*num = 0;
XDGACheckExtension (dpy, dinfo, NULL);
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LockDisplay (dpy);
GetReq (XDGAQueryModes, req);
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req->reqType = dinfo->codes->major_opcode;
req->dgaReqType = X_XDGAQueryModes;
req->screen = screen;
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if (_XReply (dpy, (xReply *) & rep, 0, xFalse)) {
if (rep.length) {
xXDGAModeInfo info;
int i, size;
char *offset;
size = rep.length << 2;
size -= rep.number * sz_xXDGAModeInfo; /* find text size */
modes = (SDL_NAME (XDGAMode) *)
Xmalloc ((rep.number * sizeof (SDL_NAME (XDGAMode))) + size);
offset = (char *) (&modes[rep.number]); /* start of text */
if (modes) {
for (i = 0; i < rep.number; i++) {
_XRead (dpy, (char *) (&info), sz_xXDGAModeInfo);
modes[i].num = info.num;
modes[i].verticalRefresh =
(float) info.vsync_num / (float) info.vsync_den;
modes[i].flags = info.flags;
modes[i].imageWidth = info.image_width;
modes[i].imageHeight = info.image_height;
modes[i].pixmapWidth = info.pixmap_width;
modes[i].pixmapHeight = info.pixmap_height;
modes[i].bytesPerScanline = info.bytes_per_scanline;
modes[i].byteOrder = info.byte_order;
modes[i].depth = info.depth;
modes[i].bitsPerPixel = info.bpp;
modes[i].redMask = info.red_mask;
modes[i].greenMask = info.green_mask;
modes[i].blueMask = info.blue_mask;
modes[i].visualClass = info.visual_class;
modes[i].viewportWidth = info.viewport_width;
modes[i].viewportHeight = info.viewport_height;
modes[i].xViewportStep = info.viewport_xstep;
modes[i].yViewportStep = info.viewport_ystep;
modes[i].maxViewportX = info.viewport_xmax;
modes[i].maxViewportY = info.viewport_ymax;
modes[i].viewportFlags = info.viewport_flags;
modes[i].reserved1 = info.reserved1;
modes[i].reserved2 = info.reserved2;
_XRead (dpy, offset, info.name_size);
modes[i].name = offset;
offset += info.name_size;
}
*num = rep.number;
} else
_XEatData (dpy, rep.length << 2);
}
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UnlockDisplay (dpy);
SyncHandle ();
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return modes;
}
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SDL_NAME (XDGADevice) *
SDL_NAME (XDGASetMode) (Display * dpy, int screen, int mode)
{
XExtDisplayInfo *dinfo = SDL_NAME (xdga_find_display) (dpy);
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xXDGASetModeReply rep;
xXDGASetModeReq *req;
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SDL_NAME (XDGADevice) * dev = NULL;
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Pixmap pid;
XDGACheckExtension (dpy, dinfo, NULL);
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LockDisplay (dpy);
GetReq (XDGASetMode, req);
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req->reqType = dinfo->codes->major_opcode;
req->dgaReqType = X_XDGASetMode;
req->screen = screen;
req->mode = mode;
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req->pid = pid = XAllocID (dpy);
if (_XReply (dpy, (xReply *) & rep, 0, xFalse)) {
if (rep.length) {
xXDGAModeInfo info;
int size;
size = rep.length << 2;
size -= sz_xXDGAModeInfo; /* get text size */
dev = (SDL_NAME (XDGADevice) *)
Xmalloc (sizeof (SDL_NAME (XDGADevice)) + size);
if (dev) {
_XRead (dpy, (char *) (&info), sz_xXDGAModeInfo);
dev->mode.num = info.num;
dev->mode.verticalRefresh =
(float) info.vsync_num / (float) info.vsync_den;
dev->mode.flags = info.flags;
dev->mode.imageWidth = info.image_width;
dev->mode.imageHeight = info.image_height;
dev->mode.pixmapWidth = info.pixmap_width;
dev->mode.pixmapHeight = info.pixmap_height;
dev->mode.bytesPerScanline = info.bytes_per_scanline;
dev->mode.byteOrder = info.byte_order;
dev->mode.depth = info.depth;
dev->mode.bitsPerPixel = info.bpp;
dev->mode.redMask = info.red_mask;
dev->mode.greenMask = info.green_mask;
dev->mode.blueMask = info.blue_mask;
dev->mode.visualClass = info.visual_class;
dev->mode.viewportWidth = info.viewport_width;
dev->mode.viewportHeight = info.viewport_height;
dev->mode.xViewportStep = info.viewport_xstep;
dev->mode.yViewportStep = info.viewport_ystep;
dev->mode.maxViewportX = info.viewport_xmax;
dev->mode.maxViewportY = info.viewport_ymax;
dev->mode.viewportFlags = info.viewport_flags;
dev->mode.reserved1 = info.reserved1;
dev->mode.reserved2 = info.reserved2;
dev->mode.name = (char *) (&dev[1]);
_XRead (dpy, dev->mode.name, info.name_size);
dev->pixmap = (rep.flags & XDGAPixmap) ? pid : 0;
dev->data = SDL_NAME (XDGAGetMappedMemory) (screen);
if (dev->data)
dev->data += rep.offset;
}
/* not sure what to do if the allocation fails */
}
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UnlockDisplay (dpy);
SyncHandle ();
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return dev;
}
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void SDL_NAME (XDGASetViewport) (Display * dpy,
int screen, int x, int y, int flags)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGASetViewportReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGASetViewport, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASetViewport;
req->screen = screen;
req->x = x;
req->y = y;
req->flags = flags;
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UnlockDisplay (dpy);
SyncHandle ();
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void SDL_NAME (XDGAInstallColormap) (Display * dpy, int screen, Colormap cmap)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGAInstallColormapReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGAInstallColormap, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAInstallColormap;
req->screen = screen;
req->cmap = cmap;
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UnlockDisplay (dpy);
SyncHandle ();
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void SDL_NAME (XDGASelectInput) (Display * dpy, int screen, long mask)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGASelectInputReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGASelectInput, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASelectInput;
req->screen = screen;
req->mask = mask;
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UnlockDisplay (dpy);
SyncHandle ();
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void SDL_NAME (XDGAFillRectangle) (Display * dpy,
int screen,
int x,
int y,
unsigned int width,
unsigned int height, unsigned long color)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGAFillRectangleReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGAFillRectangle, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAFillRectangle;
req->screen = screen;
req->x = x;
req->y = y;
req->width = width;
req->height = height;
req->color = color;
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UnlockDisplay (dpy);
SyncHandle ();
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void SDL_NAME (XDGACopyArea) (Display * dpy,
int screen,
int srcx,
int srcy,
unsigned int width,
unsigned int height, int dstx, int dsty)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGACopyAreaReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGACopyArea, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACopyArea;
req->screen = screen;
req->srcx = srcx;
req->srcy = srcy;
req->width = width;
req->height = height;
req->dstx = dstx;
req->dsty = dsty;
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UnlockDisplay (dpy);
SyncHandle ();
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void SDL_NAME (XDGACopyTransparentArea) (Display * dpy,
int screen,
int srcx,
int srcy,
unsigned int width,
unsigned int height,
int dstx,
int dsty, unsigned long key)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGACopyTransparentAreaReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGACopyTransparentArea, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACopyTransparentArea;
req->screen = screen;
req->srcx = srcx;
req->srcy = srcy;
req->width = width;
req->height = height;
req->dstx = dstx;
req->dsty = dsty;
req->key = key;
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UnlockDisplay (dpy);
SyncHandle ();
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int SDL_NAME (XDGAGetViewportStatus) (Display * dpy, int screen)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGAGetViewportStatusReply rep;
xXDGAGetViewportStatusReq *req;
int status = 0;
XDGACheckExtension (dpy, info, 0);
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LockDisplay (dpy);
GetReq (XDGAGetViewportStatus, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAGetViewportStatus;
req->screen = screen;
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if (!_XReply (dpy, (xReply *) & rep, 0, xFalse))
status = rep.status;
UnlockDisplay (dpy);
SyncHandle ();
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return status;
}
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void SDL_NAME (XDGASync) (Display * dpy, int screen)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGASyncReply rep;
xXDGASyncReq *req;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGASync, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASync;
req->screen = screen;
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_XReply (dpy, (xReply *) & rep, 0, xFalse);
UnlockDisplay (dpy);
SyncHandle ();
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void SDL_NAME (XDGAChangePixmapMode) (Display * dpy,
int screen, int *x, int *y, int mode)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGAChangePixmapModeReq *req;
xXDGAChangePixmapModeReply rep;
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XextSimpleCheckExtension (dpy, info, SDL_NAME (xdga_extension_name));
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LockDisplay (dpy);
GetReq (XDGAChangePixmapMode, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAChangePixmapMode;
req->screen = screen;
req->x = *x;
req->y = *y;
req->flags = mode;
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_XReply (dpy, (xReply *) & rep, 0, xFalse);
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*x = rep.x;
*y = rep.y;
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UnlockDisplay (dpy);
SyncHandle ();
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Colormap SDL_NAME (XDGACreateColormap) (Display * dpy,
int screen,
SDL_NAME (XDGADevice) * dev,
int alloc)
{
XExtDisplayInfo *info = SDL_NAME (xdga_find_display) (dpy);
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xXDGACreateColormapReq *req;
Colormap cid;
XDGACheckExtension (dpy, info, -1);
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LockDisplay (dpy);
GetReq (XDGACreateColormap, req);
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req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACreateColormap;
req->screen = screen;
req->mode = dev->mode.num;
req->alloc = alloc;
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cid = req->id = XAllocID (dpy);
UnlockDisplay (dpy);
SyncHandle ();
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return cid;
}
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void SDL_NAME (XDGAKeyEventToXKeyEvent) (SDL_NAME (XDGAKeyEvent) * dk,
XKeyEvent * xk)
{
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xk->type = dk->type;
xk->serial = dk->serial;
xk->send_event = False;
xk->display = dk->display;
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xk->window = RootWindow (dk->display, dk->screen);
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xk->root = xk->window;
xk->subwindow = None;
xk->time = dk->time;
xk->x = xk->y = xk->x_root = xk->y_root = 0;
xk->state = dk->state;
xk->keycode = dk->keycode;
xk->same_screen = True;
}
#include <X11/Xmd.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
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#if defined(ISC)
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# define HAS_SVR3_MMAP
# include <sys/types.h>
# include <errno.h>
# include <sys/at_ansi.h>
# include <sys/kd.h>
# include <sys/sysmacros.h>
# include <sys/immu.h>
# include <sys/region.h>
# include <sys/mmap.h>
#else
# if !defined(Lynx)
# if !defined(__EMX__)
# include <sys/mman.h>
# endif
# else
# include <sys/types.h>
# include <errno.h>
# include <smem.h>
# endif
#endif
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
#if defined(SVR4) && !defined(sun) && !defined(SCO325)
#define DEV_MEM "/dev/pmem"
#elif defined(SVR4) && defined(sun)
#define DEV_MEM "/dev/xsvc"
#else
#define DEV_MEM "/dev/mem"
#endif
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typedef struct _DGAMapRec
{
unsigned char *physical;
unsigned char *virtual;
CARD32 size;
int fd;
int screen;
struct _DGAMapRec *next;
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} DGAMapRec, *DGAMapPtr;
static Bool
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DGAMapPhysical (int, char *, unsigned char *, CARD32, CARD32, CARD32,
DGAMapPtr);
static void DGAUnmapPhysical (DGAMapPtr);
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static DGAMapPtr _Maps = NULL;
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unsigned char *SDL_NAME (XDGAGetMappedMemory) (int screen)
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{
DGAMapPtr pMap = _Maps;
unsigned char *pntr = NULL;
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while (pMap != NULL) {
if (pMap->screen == screen) {
pntr = pMap->virtual;
break;
}
pMap = pMap->next;
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}
return pntr;
}
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Bool SDL_NAME (XDGAMapFramebuffer) (int screen, char *name, /* optional device name */
unsigned char *base, /* physical memory */
CARD32 size, /* size */
CARD32 offset, /* optional offset */
CARD32 extra /* optional extra data */
)
{
DGAMapPtr pMap = _Maps;
Bool result;
/* is it already mapped ? */
while (pMap != NULL) {
if (pMap->screen == screen)
return True;
pMap = pMap->next;
}
if (extra & XDGANeedRoot) {
/* we should probably check if we have root permissions and
return False here */
}
pMap = (DGAMapPtr) Xmalloc (sizeof (DGAMapRec));
result = DGAMapPhysical (screen, name, base, size, offset, extra, pMap);
if (result) {
pMap->next = _Maps;
_Maps = pMap;
} else
Xfree (pMap);
return result;
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void SDL_NAME (XDGAUnmapFramebuffer) (int screen)
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DGAMapPtr pMap = _Maps;
DGAMapPtr pPrev = NULL;
/* is it already mapped */
while (pMap != NULL) {
if (pMap->screen == screen)
break;
pPrev = pMap;
pMap = pMap->next;
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if (!pMap)
return;
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DGAUnmapPhysical (pMap);
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if (!pPrev)
_Maps = pMap->next;
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pPrev->next = pMap->next;
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}
static Bool
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DGAMapPhysical (int screen, char *name, /* optional device name */
unsigned char *base, /* physical memory */
CARD32 size, /* size */
CARD32 offset, /* optional offset */
CARD32 extra, /* optional extra data */
DGAMapPtr pMap)
{
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#if defined(ISC) && defined(HAS_SVR3_MMAP)
struct kd_memloc mloc;
#elif defined(__EMX__)
APIRET rc;
ULONG action;
HFILE hfd;
#endif
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base += offset;
pMap->screen = screen;
pMap->physical = base;
pMap->size = size;
#if defined(ISC) && defined(HAS_SVR3_MMAP)
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if ((pMap->fd = open ("/dev/mmap", O_RDWR)) < 0)
return False;
mloc.vaddr = (char *) 0;
mloc.physaddr = (char *) base;
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mloc.length = size;
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mloc.ioflg = 1;
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if ((pMap->virtual =
(void *) ioctl (pMap->fd, MAP, &mloc)) == (void *) -1)
return False;
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#elif defined (__EMX__)
/*
* Dragon warning here! /dev/pmap$ is never closed, except on progam exit.
* Consecutive calling of this routine will make PMAP$ driver run out
* of memory handles. Some umap/close mechanism should be provided
*/
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rc = DosOpen ("/dev/pmap$", &hfd, &action, 0, FILE_NORMAL, FILE_OPEN,
OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE, (PEAOP2) NULL);
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if (rc != 0)
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struct map_ioctl
{
union
{
ULONG phys;
void *user;
} a;
ULONG size;
} pmap, dmap;
ULONG plen, dlen;
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#define XFREE86_PMAP 0x76
#define PMAP_MAP 0x44
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pmap.a.phys = base;
pmap.size = size;
rc = DosDevIOCtl (hfd, XFREE86_PMAP, PMAP_MAP,
(PULONG) & pmap, sizeof (pmap), &plen,
(PULONG) & dmap, sizeof (dmap), &dlen);
if (rc == 0) {
pMap->virtual = dmap.a.user;
}
}
if (rc != 0)
return False;
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#elif defined (Lynx)
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pMap->virtual =
smem_create ("XF86DGA", (char *) base, size, SM_READ | SM_WRITE);
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#else
#ifndef MAP_FILE
#define MAP_FILE 0
#endif
if (!name)
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name = DEV_MEM;
if ((pMap->fd = open (name, O_RDWR)) < 0)
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#if defined(ENABLE_FBCON)
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{ /* /dev/fb0 fallback added by Sam Lantinga <hercules@lokigames.com> */
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/* Try to fall back to /dev/fb on Linux - FIXME: verify the device */
struct fb_fix_screeninfo finfo;
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if ((pMap->fd = open ("/dev/fb0", O_RDWR)) < 0) {
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return False;
}
/* The useable framebuffer console memory may not be the whole
framebuffer that X has access to. :-(
*/
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if (ioctl (pMap->fd, FBIOGET_FSCREENINFO, &finfo) < 0) {
close (pMap->fd);
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return False;
}
/* Warning: On PPC, the size and virtual need to be offset by:
(((long)finfo.smem_start) -
(((long)finfo.smem_start)&~(PAGE_SIZE-1)))
*/
base = 0;
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size = pMap->size = finfo.smem_len;
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}
#else
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pMap->virtual = mmap (NULL, size, PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, pMap->fd, (off_t) base);
if (pMap->virtual == (void *) -1)
return False;
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#endif
#if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \
&& !defined(__EMX__)
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mprotect (pMap->virtual, size, PROT_READ | PROT_WRITE);
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#endif
return True;
}
static void
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DGAUnmapPhysical (DGAMapPtr pMap)
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{
#if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \
&& !defined(__EMX__)
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mprotect (pMap->virtual, pMap->size, PROT_READ);
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#elif defined(Lynx)
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/* XXX this doesn't allow enable after disable */
smem_create (NULL, pMap->virtual, pMap->size, SM_DETACH);
smem_remove ("XF86DGA");
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#endif
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/* We need to unmap and close too !!!!!!!!!! */
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/* vi: set ts=4 sw=4 expandtab: */