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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <drm/drm.h>
#include "xf86dri.h"
#include "xf86drm.h"
#include "stdio.h"
#include "sys/types.h"
#include <unistd.h>
#include <string.h>
#include "sys/mman.h"
typedef struct
{
enum
{
haveNothing,
haveDisplay,
haveConnection,
haveDriverName,
haveDeviceInfo,
haveDRM,
haveContext
}
state;
Display *display;
int screen;
drm_handle_t sAreaOffset;
char *curBusID;
char *driverName;
int drmFD;
XVisualInfo visualInfo;
XID id;
drm_context_t hwContext;
void *driPriv;
int driPrivSize;
int fbSize;
int fbOrigin;
int fbStride;
drm_handle_t fbHandle;
int ddxDriverMajor;
int ddxDriverMinor;
int ddxDriverPatch;
} TinyDRIContext;
#ifndef __x86_64__
static unsigned
fastrdtsc(void)
{
unsigned eax;
__asm__ volatile ("\t"
"pushl %%ebx\n\t"
"cpuid\n\t" ".byte 0x0f, 0x31\n\t" "popl %%ebx\n":"=a" (eax)
:"0"(0)
:"ecx", "edx", "cc");
return eax;
}
#else
static unsigned
fastrdtsc(void)
{
unsigned eax;
__asm__ volatile ("\t"
"cpuid\n\t" ".byte 0x0f, 0x31\n\t" :"=a" (eax)
:"0"(0)
:"ecx", "edx", "ebx", "cc");
return eax;
}
#endif
static unsigned
time_diff(unsigned t, unsigned t2)
{
return ((t < t2) ? t2 - t : 0xFFFFFFFFU - (t - t2 - 1));
}
static int
releaseContext(TinyDRIContext * ctx)
{
switch (ctx->state) {
case haveContext:
uniDRIDestroyContext(ctx->display, ctx->screen, ctx->id);
case haveDRM:
drmClose(ctx->drmFD);
case haveDeviceInfo:
XFree(ctx->driPriv);
case haveDriverName:
XFree(ctx->driverName);
case haveConnection:
XFree(ctx->curBusID);
uniDRICloseConnection(ctx->display, ctx->screen);
case haveDisplay:
XCloseDisplay(ctx->display);
default:
break;
}
return -1;
}
static void
testAGP(TinyDRIContext * ctx)
{
}
int
main()
{
int ret, screen, isCapable;
char *displayName = ":0";
TinyDRIContext ctx;
unsigned magic;
ctx.screen = 0;
ctx.state = haveNothing;
ctx.display = XOpenDisplay(displayName);
if (!ctx.display) {
fprintf(stderr, "Could not open display\n");
return releaseContext(&ctx);
}
ctx.state = haveDisplay;
ret =
uniDRIQueryDirectRenderingCapable(ctx.display, ctx.screen,
&isCapable);
if (!ret || !isCapable) {
fprintf(stderr, "No DRI on this display:sceen\n");
return releaseContext(&ctx);
}
if (!uniDRIOpenConnection(ctx.display, ctx.screen, &ctx.sAreaOffset,
&ctx.curBusID)) {
fprintf(stderr, "Could not open DRI connection.\n");
return releaseContext(&ctx);
}
ctx.state = haveConnection;
if (!uniDRIGetClientDriverName(ctx.display, ctx.screen,
&ctx.ddxDriverMajor, &ctx.ddxDriverMinor,
&ctx.ddxDriverPatch, &ctx.driverName)) {
fprintf(stderr, "Could not get DRI driver name.\n");
return releaseContext(&ctx);
}
ctx.state = haveDriverName;
if (!uniDRIGetDeviceInfo(ctx.display, ctx.screen,
&ctx.fbHandle, &ctx.fbOrigin, &ctx.fbSize,
&ctx.fbStride, &ctx.driPrivSize, &ctx.driPriv)) {
fprintf(stderr, "Could not get DRI device info.\n");
return releaseContext(&ctx);
}
ctx.state = haveDriverName;
if ((ctx.drmFD = drmOpen(NULL, ctx.curBusID)) < 0) {
perror("DRM Device could not be opened");
return releaseContext(&ctx);
}
ctx.state = haveDRM;
drmGetMagic(ctx.drmFD, &magic);
if (!uniDRIAuthConnection(ctx.display, ctx.screen, magic)) {
fprintf(stderr, "Could not get X server to authenticate us.\n");
return releaseContext(&ctx);
}
ret = XMatchVisualInfo(ctx.display, ctx.screen, 24, TrueColor,
&ctx.visualInfo);
if (!ret) {
ret = XMatchVisualInfo(ctx.display, ctx.screen, 16, TrueColor,
&ctx.visualInfo);
if (!ret) {
fprintf(stderr, "Could not find a matching visual.\n");
return releaseContext(&ctx);
}
}
if (!uniDRICreateContext(ctx.display, ctx.screen, ctx.visualInfo.visual,
&ctx.id, &ctx.hwContext)) {
fprintf(stderr, "Could not create DRI context.\n");
return releaseContext(&ctx);
}
ctx.state = haveContext;
testAGP(&ctx);
releaseContext(&ctx);
printf("Terminating normally\n");
return 0;
}
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