diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/Xext/Xxf86dga/XF86DGA2.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/Xext/Xxf86dga/XF86DGA2.c | 988 |
1 files changed, 988 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.12/src/video/Xext/Xxf86dga/XF86DGA2.c b/distrib/sdl-1.2.12/src/video/Xext/Xxf86dga/XF86DGA2.c new file mode 100644 index 0000000..3acf9f8 --- /dev/null +++ b/distrib/sdl-1.2.12/src/video/Xext/Xxf86dga/XF86DGA2.c @@ -0,0 +1,988 @@ +/* $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 */ + +#ifdef __EMX__ /* 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 "../extensions/xf86dga.h" +#include "../extensions/xf86dgastr.h" +#include "../extensions/Xext.h" +#include "../extensions/extutil.h" +#include <stdio.h> + +#if defined(ENABLE_FBCON) /* Needed for framebuffer console support */ +#include <sys/ioctl.h> +#include <linux/fb.h> +#endif + +/* If you change this, change the Bases[] array below as well */ +#define MAX_HEADS 16 + +char *SDL_NAME(xdga_extension_name) = XF86DGANAME; + +static XExtensionInfo _xdga_info_data; +static XExtensionInfo *xdga_info = &_xdga_info_data; + + +Bool SDL_NAME(XDGAMapFramebuffer)(int, char *, unsigned char*, CARD32, CARD32, CARD32); +void SDL_NAME(XDGAUnmapFramebuffer)(int); +unsigned char* SDL_NAME(XDGAGetMappedMemory)(int); + +#define XDGACheckExtension(dpy,i,val) \ + XextCheckExtension (dpy, i, SDL_NAME(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 (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 +){ + return True; +} + +static Bool +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; +} + + +Bool SDL_NAME(XDGAQueryExtension) ( + Display *dpy, + int *event_basep, + int *error_basep +){ + XExtDisplayInfo *info = SDL_NAME(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 SDL_NAME(XDGAQueryVersion)( + Display *dpy, + int *majorVersion, + int *minorVersion +){ + XExtDisplayInfo *info = SDL_NAME(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); + } + SDL_NAME(XDGASetClientVersion)(dpy); + } + return True; +} + +Bool SDL_NAME(XDGASetClientVersion)( + Display *dpy +){ + XExtDisplayInfo *info = SDL_NAME(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 SDL_NAME(XDGAOpenFramebuffer)( + Display *dpy, + int screen +){ + XExtDisplayInfo *info = SDL_NAME(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 = SDL_NAME(XDGAMapFramebuffer)(screen, deviceName, + (unsigned char*)(long)rep.mem1, + rep.size, rep.offset, rep.extra); + + if(deviceName) + Xfree(deviceName); + + UnlockDisplay(dpy); + SyncHandle(); + return ret; +} + +void SDL_NAME(XDGACloseFramebuffer)( + Display *dpy, + int screen +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXDGACloseFramebufferReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(xdga_extension_name)); + + SDL_NAME(XDGAUnmapFramebuffer)(screen); + + LockDisplay(dpy); + GetReq(XDGACloseFramebuffer, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XDGACloseFramebuffer; + req->screen = screen; + UnlockDisplay(dpy); + SyncHandle(); +} + + + +SDL_NAME(XDGAMode)* SDL_NAME(XDGAQueryModes)( + Display *dpy, + int screen, + int *num +){ + XExtDisplayInfo *dinfo = SDL_NAME(xdga_find_display) (dpy); + xXDGAQueryModesReply rep; + xXDGAQueryModesReq *req; + SDL_NAME(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 = (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); + } + } + + UnlockDisplay(dpy); + SyncHandle(); + + return modes; +} + + +SDL_NAME(XDGADevice) * +SDL_NAME(XDGASetMode)( + Display *dpy, + int screen, + int mode +){ + XExtDisplayInfo *dinfo = SDL_NAME(xdga_find_display) (dpy); + xXDGASetModeReply rep; + xXDGASetModeReq *req; + SDL_NAME(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 = (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 */ + } + } + + UnlockDisplay(dpy); + SyncHandle(); + + return dev; +} + + +void SDL_NAME(XDGASetViewport)( + Display *dpy, + int screen, + int x, + int y, + int flags +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXDGASetViewportReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 SDL_NAME(XDGAInstallColormap)( + Display *dpy, + int screen, + Colormap cmap +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXDGAInstallColormapReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 SDL_NAME(XDGASelectInput)( + Display *dpy, + int screen, + long mask +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXDGASelectInputReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 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); + xXDGAFillRectangleReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 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); + xXDGACopyAreaReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 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); + xXDGACopyTransparentAreaReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 SDL_NAME(XDGAGetViewportStatus)( + Display *dpy, + int screen +){ + XExtDisplayInfo *info = SDL_NAME(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 SDL_NAME(XDGASync)( + Display *dpy, + int screen +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXDGASyncReply rep; + xXDGASyncReq *req; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 SDL_NAME(XDGAChangePixmapMode)( + Display *dpy, + int screen, + int *x, + int *y, + int mode +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXDGAChangePixmapModeReq *req; + xXDGAChangePixmapModeReply rep; + + XextSimpleCheckExtension (dpy, info, SDL_NAME(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 SDL_NAME(XDGACreateColormap)( + Display *dpy, + int screen, + SDL_NAME(XDGADevice) *dev, + int alloc +){ + XExtDisplayInfo *info = SDL_NAME(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 SDL_NAME(XDGAKeyEventToXKeyEvent)( + SDL_NAME(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 <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) +# 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 + + + +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* +SDL_NAME(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 +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; +} + +void +SDL_NAME(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(__EMX__) + 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 (__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 + */ + + 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) + 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) +#if defined(ENABLE_FBCON) + { /* /dev/fb0 fallback added by Sam Lantinga <hercules@lokigames.com> */ + /* Try to fall back to /dev/fb on Linux - FIXME: verify the device */ + struct fb_fix_screeninfo finfo; + + if ((pMap->fd = open("/dev/fb0", O_RDWR)) < 0) { + return False; + } + /* The useable framebuffer console memory may not be the whole + framebuffer that X has access to. :-( + */ + if ( ioctl(pMap->fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { + close(pMap->fd); + 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; + size = pMap->size = finfo.smem_len; + } +#else + return False; +#endif + 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(__EMX__) + 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(__EMX__) + mprotect(pMap->virtual,pMap->size, PROT_READ); +#elif defined(Lynx) + /* 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 !!!!!!!!!!*/ +} |