diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/video/Xext/Xxf86dga/XF86DGA.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/video/Xext/Xxf86dga/XF86DGA.c | 721 |
1 files changed, 721 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/Xext/Xxf86dga/XF86DGA.c b/distrib/sdl-1.2.15/src/video/Xext/Xxf86dga/XF86DGA.c new file mode 100644 index 0000000..f2210e4 --- /dev/null +++ b/distrib/sdl-1.2.15/src/video/Xext/Xxf86dga/XF86DGA.c @@ -0,0 +1,721 @@ +/* $XFree86: xc/lib/Xxf86dga/XF86DGA.c,v 3.19 2001/08/18 02:41:30 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 + +#if defined(linux) +#define HAS_MMAP_ANON +#include <sys/types.h> +#include <sys/mman.h> +/*#include <asm/page.h>*/ /* PAGE_SIZE */ +#define HAS_SC_PAGESIZE /* _SC_PAGESIZE may be an enum for Linux */ +#define HAS_GETPAGESIZE +#endif /* linux */ + +#if defined(CSRG_BASED) +#define HAS_MMAP_ANON +#define HAS_GETPAGESIZE +#include <sys/types.h> +#include <sys/mman.h> +#endif /* CSRG_BASED */ + +#if defined(DGUX) +#define HAS_GETPAGESIZE +#define MMAP_DEV_ZERO +#include <sys/types.h> +#include <sys/mman.h> +#include <unistd.h> +#endif /* DGUX */ + +#if defined(SVR4) && !defined(DGUX) +#define MMAP_DEV_ZERO +#include <sys/types.h> +#include <sys/mman.h> +#include <unistd.h> +#endif /* SVR4 && !DGUX */ + +#if defined(sun) && !defined(SVR4) /* SunOS */ +#define MMAP_DEV_ZERO /* doesn't SunOS have MAP_ANON ?? */ +#define HAS_GETPAGESIZE +#include <sys/types.h> +#include <sys/mman.h> +#endif /* sun && !SVR4 */ + +#ifdef XNO_SYSCONF +#undef _SC_PAGESIZE +#endif + +#define NEED_EVENTS +#define NEED_REPLIES + +/* Apparently some X11 systems can't include this multiple times... */ +#ifndef SDL_INCLUDED_XLIBINT_H +#define SDL_INCLUDED_XLIBINT_H 1 +#include <X11/Xlibint.h> +#endif + +#include "../extensions/xf86dga.h" +#include "../extensions/xf86dgastr.h" +#include "../extensions/Xext.h" +#include "../extensions/extutil.h" + +extern XExtDisplayInfo* SDL_NAME(xdga_find_display)(Display*); +extern char *SDL_NAME(xdga_extension_name); + +#define XF86DGACheckExtension(dpy,i,val) \ + XextCheckExtension (dpy, i, SDL_NAME(xdga_extension_name), val) + +/***************************************************************************** + * * + * public XFree86-DGA Extension routines * + * * + *****************************************************************************/ + +Bool SDL_NAME(XF86DGAQueryExtension) ( + Display *dpy, + int *event_basep, + int *error_basep +){ + return SDL_NAME(XDGAQueryExtension)(dpy, event_basep, error_basep); +} + +Bool SDL_NAME(XF86DGAQueryVersion)( + Display* dpy, + int* majorVersion, + int* minorVersion +){ + return SDL_NAME(XDGAQueryVersion)(dpy, majorVersion, minorVersion); +} + +Bool SDL_NAME(XF86DGAGetVideoLL)( + Display* dpy, + int screen, + int *offset, + int *width, + int *bank_size, + int *ram_size +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGAGetVideoLLReply rep; + xXF86DGAGetVideoLLReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGAGetVideoLL, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGAGetVideoLL; + req->screen = screen; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + + *offset = /*(char *)*/rep.offset; + *width = rep.width; + *bank_size = rep.bank_size; + *ram_size = rep.ram_size; + + UnlockDisplay(dpy); + SyncHandle(); + return True; +} + + +Bool SDL_NAME(XF86DGADirectVideoLL)( + Display* dpy, + int screen, + int enable +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGADirectVideoReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGADirectVideo, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGADirectVideo; + req->screen = screen; + req->enable = enable; + UnlockDisplay(dpy); + SyncHandle(); + XSync(dpy,False); + return True; +} + +Bool SDL_NAME(XF86DGAGetViewPortSize)( + Display* dpy, + int screen, + int *width, + int *height +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGAGetViewPortSizeReply rep; + xXF86DGAGetViewPortSizeReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGAGetViewPortSize, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGAGetViewPortSize; + req->screen = screen; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + + *width = rep.width; + *height = rep.height; + + UnlockDisplay(dpy); + SyncHandle(); + return True; +} + + +Bool SDL_NAME(XF86DGASetViewPort)( + Display* dpy, + int screen, + int x, + int y +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGASetViewPortReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGASetViewPort, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGASetViewPort; + req->screen = screen; + req->x = x; + req->y = y; + UnlockDisplay(dpy); + SyncHandle(); + XSync(dpy,False); + return True; +} + + +Bool SDL_NAME(XF86DGAGetVidPage)( + Display* dpy, + int screen, + int *vpage +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGAGetVidPageReply rep; + xXF86DGAGetVidPageReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGAGetVidPage, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGAGetVidPage; + req->screen = screen; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + + *vpage = rep.vpage; + UnlockDisplay(dpy); + SyncHandle(); + return True; +} + + +Bool SDL_NAME(XF86DGASetVidPage)( + Display* dpy, + int screen, + int vpage +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGASetVidPageReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGASetVidPage, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGASetVidPage; + req->screen = screen; + req->vpage = vpage; + UnlockDisplay(dpy); + SyncHandle(); + XSync(dpy,False); + return True; +} + +Bool SDL_NAME(XF86DGAInstallColormap)( + Display* dpy, + int screen, + Colormap cmap +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGAInstallColormapReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGAInstallColormap, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGAInstallColormap; + req->screen = screen; + req->id = cmap; + UnlockDisplay(dpy); + SyncHandle(); + XSync(dpy,False); + return True; +} + +Bool SDL_NAME(XF86DGAQueryDirectVideo)( + Display *dpy, + int screen, + int *flags +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGAQueryDirectVideoReply rep; + xXF86DGAQueryDirectVideoReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGAQueryDirectVideo, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGAQueryDirectVideo; + req->screen = screen; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + *flags = rep.flags; + UnlockDisplay(dpy); + SyncHandle(); + return True; +} + +Bool SDL_NAME(XF86DGAViewPortChanged)( + Display *dpy, + int screen, + int n +){ + XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy); + xXF86DGAViewPortChangedReply rep; + xXF86DGAViewPortChangedReq *req; + + XF86DGACheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(XF86DGAViewPortChanged, req); + req->reqType = info->codes->major_opcode; + req->dgaReqType = X_XF86DGAViewPortChanged; + req->screen = screen; + req->n = n; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + UnlockDisplay(dpy); + SyncHandle(); + return rep.result; +} + + + +/* Helper functions */ + +#include <X11/Xmd.h> +#include "../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) +# 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 { + unsigned long physaddr; /* actual requested physical address */ + unsigned long size; /* actual requested map size */ + unsigned long delta; /* delta to account for page alignment */ + void * vaddr; /* mapped address, without the delta */ + int refcount; /* reference count */ +} MapRec, *MapPtr; + +typedef struct { + Display * display; + int screen; + MapPtr map; +} ScrRec, *ScrPtr; + +static int mapFd = -1; +static int numMaps = 0; +static int numScrs = 0; +static MapPtr *mapList = NULL; +static ScrPtr *scrList = NULL; + +static MapPtr +AddMap(void) +{ + MapPtr *old; + + old = mapList; + mapList = realloc(mapList, sizeof(MapPtr) * (numMaps + 1)); + if (!mapList) { + mapList = old; + return NULL; + } + mapList[numMaps] = malloc(sizeof(MapRec)); + if (!mapList[numMaps]) + return NULL; + return mapList[numMaps++]; +} + +static ScrPtr +AddScr(void) +{ + ScrPtr *old; + + old = scrList; + scrList = realloc(scrList, sizeof(ScrPtr) * (numScrs + 1)); + if (!scrList) { + scrList = old; + return NULL; + } + scrList[numScrs] = malloc(sizeof(ScrRec)); + if (!scrList[numScrs]) + return NULL; + return scrList[numScrs++]; +} + +static MapPtr +FindMap(unsigned long address, unsigned long size) +{ + int i; + + for (i = 0; i < numMaps; i++) { + if (mapList[i]->physaddr == address && + mapList[i]->size == size) + return mapList[i]; + } + return NULL; +} + +static ScrPtr +FindScr(Display *display, int screen) +{ + int i; + + for (i = 0; i < numScrs; i++) { + if (scrList[i]->display == display && + scrList[i]->screen == screen) + return scrList[i]; + } + return NULL; +} + +static void * +MapPhysAddress(unsigned long address, unsigned long size) +{ + unsigned long offset, delta; + int pagesize = -1; + void *vaddr; + MapPtr mp; +#if defined(ISC) && defined(HAS_SVR3_MMAP) + struct kd_memloc mloc; +#elif defined(__EMX__) + APIRET rc; + ULONG action; + HFILE hfd; +#endif + + if ((mp = FindMap(address, size))) { + mp->refcount++; + return (void *)((unsigned long)mp->vaddr + mp->delta); + } + +#if defined(_SC_PAGESIZE) && defined(HAS_SC_PAGESIZE) + pagesize = sysconf(_SC_PAGESIZE); +#endif +#ifdef _SC_PAGE_SIZE + if (pagesize == -1) + pagesize = sysconf(_SC_PAGE_SIZE); +#endif +#ifdef HAS_GETPAGESIZE + if (pagesize == -1) + pagesize = getpagesize(); +#endif +#ifdef PAGE_SIZE + if (pagesize == -1) + pagesize = PAGE_SIZE; +#endif + if (pagesize == -1) + pagesize = 4096; + + delta = address % pagesize; + offset = address - delta; + +#if defined(ISC) && defined(HAS_SVR3_MMAP) + if (mapFd < 0) { + if ((mapFd = open("/dev/mmap", O_RDWR)) < 0) + return NULL; + } + mloc.vaddr = (char *)0; + mloc.physaddr = (char *)offset; + mloc.length = size + delta; + mloc.ioflg=1; + + if ((vaddr = (void *)ioctl(mapFd, MAP, &mloc)) == (void *)-1) + return NULL; +#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 NULL; + { + 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 = offset; + pmap.size = size + delta; + rc = DosDevIOCtl(hfd, XFREE86_PMAP, PMAP_MAP, + (PULONG)&pmap, sizeof(pmap), &plen, + (PULONG)&dmap, sizeof(dmap), &dlen); + if (rc == 0) { + vaddr = dmap.a.user; + } + } + if (rc != 0) + return NULL; +#elif defined (Lynx) + vaddr = (void *)smem_create("XF86DGA", (char *)offset, + size + delta, SM_READ|SM_WRITE); +#else +#ifndef MAP_FILE +#define MAP_FILE 0 +#endif + if (mapFd < 0) { + if ((mapFd = open(DEV_MEM, O_RDWR)) < 0) + return NULL; + } + vaddr = (void *)mmap(NULL, size + delta, PROT_READ | PROT_WRITE, + MAP_FILE | MAP_SHARED, mapFd, (off_t)offset); + if (vaddr == (void *)-1) + return NULL; +#endif + + if (!vaddr) { + if (!(mp = AddMap())) + return NULL; + mp->physaddr = address; + mp->size = size; + mp->delta = delta; + mp->vaddr = vaddr; + mp->refcount = 1; + } + return (void *)((unsigned long)vaddr + delta); +} + +/* + * Still need to find a clean way of detecting the death of a DGA app + * and returning things to normal - Jon + * This is here to help debugging without rebooting... Also C-A-BS + * should restore text mode. + */ + +int +SDL_NAME(XF86DGAForkApp)(int screen) +{ + pid_t pid; + int status; + int i; + + /* fork the app, parent hangs around to clean up */ + if ((pid = fork()) > 0) { + ScrPtr sp; + + waitpid(pid, &status, 0); + for (i = 0; i < numScrs; i++) { + sp = scrList[i]; + SDL_NAME(XF86DGADirectVideoLL)(sp->display, sp->screen, 0); + XSync(sp->display, False); + } + if (WIFEXITED(status)) + exit(0); + else + exit(-1); + } + return pid; +} + + +Bool +SDL_NAME(XF86DGADirectVideo)( + Display *dis, + int screen, + int enable +){ + ScrPtr sp; + MapPtr mp = NULL; + + if ((sp = FindScr(dis, screen))) + mp = sp->map; + + if (enable & XF86DGADirectGraphics) { +#if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \ + && !defined(__EMX__) + if (mp && mp->vaddr) + mprotect(mp->vaddr, mp->size + mp->delta, PROT_READ | PROT_WRITE); +#endif + } else { +#if !defined(ISC) && !defined(HAS_SVR3_MMAP) && !defined(Lynx) \ + && !defined(__EMX__) + if (mp && mp->vaddr) + mprotect(mp->vaddr, mp->size + mp->delta, PROT_READ); +#elif defined(Lynx) + /* XXX this doesn't allow enable after disable */ + smem_create(NULL, mp->vaddr, mp->size + mp->delta, SM_DETACH); + smem_remove("XF86DGA"); +#endif + } + + SDL_NAME(XF86DGADirectVideoLL)(dis, screen, enable); + return 1; +} + + +static void +XF86cleanup(int sig) +{ + ScrPtr sp; + int i; + static char beenhere = 0; + + if (beenhere) + exit(3); + beenhere = 1; + + for (i = 0; i < numScrs; i++) { + sp = scrList[i]; + SDL_NAME(XF86DGADirectVideo)(sp->display, sp->screen, 0); + XSync(sp->display, False); + } + exit(3); +} + +Bool +SDL_NAME(XF86DGAGetVideo)( + Display *dis, + int screen, + char **addr, + int *width, + int *bank, + int *ram +){ + /*unsigned long*/ int offset; + static int beenHere = 0; + ScrPtr sp; + MapPtr mp; + + if (!(sp = FindScr(dis, screen))) { + if (!(sp = AddScr())) { + fprintf(stderr, "XF86DGAGetVideo: malloc failure\n"); + exit(-2); + } + sp->display = dis; + sp->screen = screen; + sp->map = NULL; + } + + SDL_NAME(XF86DGAGetVideoLL)(dis, screen , &offset, width, bank, ram); + + *addr = MapPhysAddress(offset, *bank); + if (*addr == NULL) { + fprintf(stderr, "XF86DGAGetVideo: failed to map video memory (%s)\n", + strerror(errno)); + exit(-2); + } + + if ((mp = FindMap(offset, *bank))) + sp->map = mp; + + if (!beenHere) { + beenHere = 1; + atexit((void(*)(void))XF86cleanup); + /* one shot XF86cleanup attempts */ + signal(SIGSEGV, XF86cleanup); +#ifdef SIGBUS + signal(SIGBUS, XF86cleanup); +#endif + signal(SIGHUP, XF86cleanup); + signal(SIGFPE, XF86cleanup); + } + + return 1; +} + |