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-rw-r--r--src/XF86DGA2.c962
1 files changed, 962 insertions, 0 deletions
diff --git a/src/XF86DGA2.c b/src/XF86DGA2.c
new file mode 100644
index 0000000..c3bd960
--- /dev/null
+++ b/src/XF86DGA2.c
@@ -0,0 +1,962 @@
+/* $XFree86: xc/lib/Xxf86dga/XF86DGA2.c,v 1.21 2002/12/14 04:41:12 dawes Exp $ */
+/*
+
+Copyright (c) 1995 Jon Tombs
+Copyright (c) 1995,1996 The XFree86 Project, Inc
+
+*/
+
+/* THIS IS NOT AN X CONSORTIUM STANDARD */
+
+#ifdef __UNIXOS2__ /* needed here to override certain constants in X headers */
+#define INCL_DOS
+#define INCL_DOSIOCTL
+#include <os2.h>
+#endif
+
+#define NEED_EVENTS
+#define NEED_REPLIES
+#include <X11/Xlibint.h>
+#include <X11/extensions/xf86dga.h>
+#include <X11/extensions/xf86dgastr.h>
+#include <X11/extensions/Xext.h>
+#include <X11/extensions/extutil.h>
+#include <stdio.h>
+
+
+/* If you change this, change the Bases[] array below as well */
+#define MAX_HEADS 16
+
+char *xdga_extension_name = XF86DGANAME;
+
+static XExtensionInfo _xdga_info_data;
+static XExtensionInfo *xdga_info = &_xdga_info_data;
+
+
+Bool XDGAMapFramebuffer(int, char *, unsigned char*, CARD32, CARD32, CARD32);
+void XDGAUnmapFramebuffer(int);
+unsigned char* XDGAGetMappedMemory(int);
+
+#define XDGACheckExtension(dpy,i,val) \
+ XextCheckExtension (dpy, i, xdga_extension_name, val)
+
+/*****************************************************************************
+ * *
+ * private utility routines *
+ * *
+ *****************************************************************************/
+
+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);
+
+static XExtensionHooks xdga_extension_hooks = {
+ 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 */
+};
+
+static XEXT_GENERATE_CLOSE_DISPLAY (xdga_close_display, xdga_info)
+
+
+XEXT_GENERATE_FIND_DISPLAY (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
+){
+ return True;
+}
+
+static Bool
+xdga_wire_to_event(
+ Display *dpy,
+ XEvent *event,
+ xEvent *wire_ev
+){
+ dgaEvent *wire = (dgaEvent *) wire_ev;
+ XDGAButtonEvent *bevent;
+ XDGAKeyEvent *kevent;
+ XDGAMotionEvent *mevent;
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+
+ XDGACheckExtension (dpy, info, False);
+
+ switch((wire->u.u.type & 0x7f) - info->codes->first_event) {
+ case MotionNotify:
+ mevent = (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 = (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 = (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;
+}
+
+
+Bool XDGAQueryExtension (
+ Display *dpy,
+ int *event_basep,
+ int *error_basep
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+
+ if (XextHasExtension(info)) {
+ *event_basep = info->codes->first_event;
+ *error_basep = info->codes->first_error;
+ return True;
+ } else {
+ return False;
+ }
+}
+
+
+Bool XDGAQueryVersion(
+ Display *dpy,
+ int *majorVersion,
+ int *minorVersion
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGAQueryVersionReply rep;
+ xXDGAQueryVersionReq *req;
+
+ XDGACheckExtension (dpy, info, False);
+
+ LockDisplay(dpy);
+ GetReq(XDGAQueryVersion, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGAQueryVersion;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ *majorVersion = rep.majorVersion;
+ *minorVersion = rep.minorVersion;
+ 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);
+ }
+ XDGASetClientVersion(dpy);
+ }
+ return True;
+}
+
+Bool XDGASetClientVersion(
+ Display *dpy
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGASetClientVersionReq *req;
+
+ XDGACheckExtension (dpy, info, False);
+
+ LockDisplay(dpy);
+ GetReq(XDGASetClientVersion, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGASetClientVersion;
+ req->major = XDGA_MAJOR_VERSION;
+ req->minor = XDGA_MINOR_VERSION;
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return True;
+}
+
+Bool XDGAOpenFramebuffer(
+ Display *dpy,
+ int screen
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGAOpenFramebufferReply rep;
+ xXDGAOpenFramebufferReq *req;
+ char *deviceName = NULL;
+ Bool ret;
+
+ XDGACheckExtension (dpy, info, False);
+
+ LockDisplay(dpy);
+ GetReq(XDGAOpenFramebuffer, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGAOpenFramebuffer;
+ req->screen = screen;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+
+ if(rep.length) {
+ deviceName = Xmalloc(rep.length << 2);
+ _XRead(dpy, deviceName, rep.length << 2);
+ }
+
+ ret = XDGAMapFramebuffer(screen, deviceName,
+ (unsigned char*)(long)rep.mem1,
+ rep.size, rep.offset, rep.extra);
+
+ if(deviceName)
+ Xfree(deviceName);
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return ret;
+}
+
+void XDGACloseFramebuffer(
+ Display *dpy,
+ int screen
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGACloseFramebufferReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ XDGAUnmapFramebuffer(screen);
+
+ LockDisplay(dpy);
+ GetReq(XDGACloseFramebuffer, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGACloseFramebuffer;
+ req->screen = screen;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+
+
+XDGAMode* XDGAQueryModes(
+ Display *dpy,
+ int screen,
+ int *num
+){
+ XExtDisplayInfo *dinfo = xdga_find_display (dpy);
+ xXDGAQueryModesReply rep;
+ xXDGAQueryModesReq *req;
+ XDGAMode *modes = NULL;
+
+ *num = 0;
+
+ XDGACheckExtension (dpy, dinfo, NULL);
+
+ LockDisplay(dpy);
+ GetReq(XDGAQueryModes, req);
+ req->reqType = dinfo->codes->major_opcode;
+ req->dgaReqType = X_XDGAQueryModes;
+ req->screen = screen;
+
+ 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 = (XDGAMode*)Xmalloc((rep.number * sizeof(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);
+ }
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return modes;
+}
+
+
+XDGADevice *
+XDGASetMode(
+ Display *dpy,
+ int screen,
+ int mode
+){
+ XExtDisplayInfo *dinfo = xdga_find_display (dpy);
+ xXDGASetModeReply rep;
+ xXDGASetModeReq *req;
+ XDGADevice *dev = NULL;
+ Pixmap pid;
+
+ XDGACheckExtension (dpy, dinfo, NULL);
+
+ LockDisplay(dpy);
+ GetReq(XDGASetMode, req);
+ req->reqType = dinfo->codes->major_opcode;
+ req->dgaReqType = X_XDGASetMode;
+ req->screen = screen;
+ req->mode = mode;
+ 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 = (XDGADevice*)Xmalloc(sizeof(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 = XDGAGetMappedMemory(screen);
+
+ if(dev->data)
+ dev->data += rep.offset;
+ }
+ /* not sure what to do if the allocation fails */
+ }
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return dev;
+}
+
+
+void XDGASetViewport(
+ Display *dpy,
+ int screen,
+ int x,
+ int y,
+ int flags
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGASetViewportReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGASetViewport, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGASetViewport;
+ req->screen = screen;
+ req->x = x;
+ req->y = y;
+ req->flags = flags;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+
+void XDGAInstallColormap(
+ Display *dpy,
+ int screen,
+ Colormap cmap
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGAInstallColormapReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGAInstallColormap, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGAInstallColormap;
+ req->screen = screen;
+ req->cmap = cmap;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void XDGASelectInput(
+ Display *dpy,
+ int screen,
+ long mask
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGASelectInputReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGASelectInput, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGASelectInput;
+ req->screen = screen;
+ req->mask = mask;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void XDGAFillRectangle(
+ Display *dpy,
+ int screen,
+ int x,
+ int y,
+ unsigned int width,
+ unsigned int height,
+ unsigned long color
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGAFillRectangleReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGAFillRectangle, req);
+ 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;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void XDGACopyArea(
+ Display *dpy,
+ int screen,
+ int srcx,
+ int srcy,
+ unsigned int width,
+ unsigned int height,
+ int dstx,
+ int dsty
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGACopyAreaReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGACopyArea, req);
+ 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;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void XDGACopyTransparentArea(
+ Display *dpy,
+ int screen,
+ int srcx,
+ int srcy,
+ unsigned int width,
+ unsigned int height,
+ int dstx,
+ int dsty,
+ unsigned long key
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGACopyTransparentAreaReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGACopyTransparentArea, req);
+ 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;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+
+int XDGAGetViewportStatus(
+ Display *dpy,
+ int screen
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGAGetViewportStatusReply rep;
+ xXDGAGetViewportStatusReq *req;
+ int status = 0;
+
+ XDGACheckExtension (dpy, info, 0);
+
+ LockDisplay(dpy);
+ GetReq(XDGAGetViewportStatus, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGAGetViewportStatus;
+ req->screen = screen;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse))
+ status = rep.status;
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return status;
+}
+
+void XDGASync(
+ Display *dpy,
+ int screen
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGASyncReply rep;
+ xXDGASyncReq *req;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGASync, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGASync;
+ req->screen = screen;
+ _XReply(dpy, (xReply *)&rep, 0, xFalse);
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+
+void XDGAChangePixmapMode(
+ Display *dpy,
+ int screen,
+ int *x,
+ int *y,
+ int mode
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGAChangePixmapModeReq *req;
+ xXDGAChangePixmapModeReply rep;
+
+ XextSimpleCheckExtension (dpy, info, xdga_extension_name);
+
+ LockDisplay(dpy);
+ GetReq(XDGAChangePixmapMode, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGAChangePixmapMode;
+ req->screen = screen;
+ req->x = *x;
+ req->y = *y;
+ req->flags = mode;
+ _XReply(dpy, (xReply *)&rep, 0, xFalse);
+ *x = rep.x;
+ *y = rep.y;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+Colormap XDGACreateColormap(
+ Display *dpy,
+ int screen,
+ XDGADevice *dev,
+ int alloc
+){
+ XExtDisplayInfo *info = xdga_find_display (dpy);
+ xXDGACreateColormapReq *req;
+ Colormap cid;
+
+ XDGACheckExtension (dpy, info, -1);
+
+ LockDisplay(dpy);
+ GetReq(XDGACreateColormap, req);
+ req->reqType = info->codes->major_opcode;
+ req->dgaReqType = X_XDGACreateColormap;
+ req->screen = screen;
+ req->mode = dev->mode.num;
+ req->alloc = alloc;
+ cid = req->id = XAllocID(dpy);
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return cid;
+}
+
+
+void XDGAKeyEventToXKeyEvent(
+ XDGAKeyEvent* dk,
+ XKeyEvent* xk
+){
+ xk->type = dk->type;
+ xk->serial = dk->serial;
+ xk->send_event = False;
+ xk->display = dk->display;
+ xk->window = RootWindow(dk->display, dk->screen);
+ 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 <X11/extensions/xf86dga.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#if defined(ISC)
+# 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) && defined(NO_MMAP)
+# include <sys/types.h>
+# include <errno.h>
+# include <smem.h>
+# else
+# if !defined(__UNIXOS2__)
+# include <sys/mman.h>
+# endif
+# 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
+
+
+
+typedef struct _DGAMapRec{
+ unsigned char *physical;
+ unsigned char *virtual;
+ CARD32 size;
+ int fd;
+ int screen;
+ struct _DGAMapRec *next;
+} DGAMapRec, *DGAMapPtr;
+
+static Bool
+DGAMapPhysical(int, char*, unsigned char*, CARD32, CARD32, CARD32, DGAMapPtr);
+static void DGAUnmapPhysical(DGAMapPtr);
+
+static DGAMapPtr _Maps = NULL;
+
+
+unsigned char*
+XDGAGetMappedMemory(int screen)
+{
+ DGAMapPtr pMap = _Maps;
+ unsigned char *pntr = NULL;
+
+ while(pMap != NULL) {
+ if(pMap->screen == screen) {
+ pntr = pMap->virtual;
+ break;
+ }
+ pMap = pMap->next;
+ }
+
+ return pntr;
+}
+
+Bool
+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;
+}
+
+void
+XDGAUnmapFramebuffer(int screen)
+{
+ DGAMapPtr pMap = _Maps;
+ DGAMapPtr pPrev = NULL;
+
+ /* is it already mapped */
+ while(pMap != NULL) {
+ if(pMap->screen == screen)
+ break;
+ pPrev = pMap;
+ pMap = pMap->next;
+ }
+
+ if(!pMap)
+ return;
+
+ DGAUnmapPhysical(pMap);
+
+ if(!pPrev)
+ _Maps = pMap->next;
+ else
+ pPrev->next = pMap->next;
+
+ Xfree(pMap);
+}
+
+
+static Bool
+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
+) {
+#if defined(ISC) && defined(HAS_SVR3_MMAP)
+ struct kd_memloc mloc;
+#elif defined(__UNIXOS2__)
+ APIRET rc;
+ ULONG action;
+ HFILE hfd;
+#endif
+
+ base += offset;
+
+ pMap->screen = screen;
+ pMap->physical = base;
+ pMap->size = size;
+
+#if defined(ISC) && defined(HAS_SVR3_MMAP)
+ if ((pMap->fd = open("/dev/mmap", O_RDWR)) < 0)
+ return False;
+ mloc.vaddr = (char *)0;
+ mloc.physaddr = (char *)base;
+ mloc.length = size;
+ mloc.ioflg=1;
+
+ if ((pMap->virtual = (void *)ioctl(pMap->fd, MAP, &mloc)) == (void *)-1)
+ return False;
+#elif defined (__UNIXOS2__)
+ /*
+ * 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
+ */
+
+ rc = DosOpen("/dev/pmap$", &hfd, &action, 0, FILE_NORMAL, FILE_OPEN,
+ OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE, (PEAOP2)NULL);
+ if (rc != 0)
+ return False;
+ {
+ struct map_ioctl {
+ union {
+ ULONG phys;
+ void* user;
+ } a;
+ ULONG size;
+ } pmap,dmap;
+ ULONG plen,dlen;
+#define XFREE86_PMAP 0x76
+#define PMAP_MAP 0x44
+
+ 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;
+#elif defined (Lynx) && defined(NO_MMAP)
+ pMap->virtual = smem_create("XF86DGA", (char*)base, size, SM_READ|SM_WRITE);
+#else
+#ifndef MAP_FILE
+#define MAP_FILE 0
+#endif
+ if (!name)
+ name = DEV_MEM;
+ if ((pMap->fd = open(name, O_RDWR)) < 0)
+ return False;
+ 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;
+#endif
+
+#if !defined(ISC) && !defined(HAS_SVR3_MMAP) \
+ && !(defined(Lynx) && defined(NO_MMAP)) \
+ && !defined(__UNIXOS2__)
+ mprotect(pMap->virtual, size, PROT_READ | PROT_WRITE);
+#endif
+
+ return True;
+}
+
+
+
+static void
+DGAUnmapPhysical(DGAMapPtr pMap)
+{
+#if !defined(ISC) && !defined(HAS_SVR3_MMAP) \
+ && !(defined(Lynx) && defined(NO_MMAP)) \
+ && !defined(__UNIXOS2__)
+ mprotect(pMap->virtual,pMap->size, PROT_READ);
+#elif defined(Lynx) && defined(NO_MMAP)
+ /* XXX this doesn't allow enable after disable */
+ smem_create(NULL, pMap->virtual, pMap->size, SM_DETACH);
+ smem_remove("XF86DGA");
+#endif
+
+
+ /* We need to unmap and close too !!!!!!!!!!*/
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 21:05:07 +0000