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Probe for chipset if one isn't supplied

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This commit is contained in:
Keith Whitwell 2003-01-18 12:16:16 +00:00
parent f73e37e154
commit 559af8ace4
1 changed files with 77 additions and 2 deletions
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79
src/miniglx/miniglx.c
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@ -22,7 +22,7 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/* $Id: miniglx.c,v 1.1.4.36 2003/01/17 19:01:22 keithw Exp $ */
/* $Id: miniglx.c,v 1.1.4.37 2003/01/18 12:16:16 keithw Exp $ */
/**
@ -251,6 +251,18 @@ OpenFBDev( Display *dpy )
/* make copy */
dpy->VarInfo = dpy->OrigVarInfo; /* structure copy */
/* Turn off hw accels (otherwise mmap of mmio region will be
* refused)
*/
dpy->VarInfo.accel_flags = 0;
if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->VarInfo)) {
fprintf(stderr, "error: ioctl(FBIOPUT_VSCREENINFO) failed: %s\n",
strerror(errno));
return GL_FALSE;
}
/* Get the fixed screen info */
if (ioctl(dpy->FrameBufferFD, FBIOGET_FSCREENINFO, &dpy->FixedInfo)) {
fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n",
@ -425,6 +437,19 @@ SetupFBDev( Display *dpy, Window win )
return GL_FALSE;
}
/* get the variable screen info, in case it has been modified */
if (ioctl(dpy->FrameBufferFD, FBIOGET_VSCREENINFO, &dpy->VarInfo)) {
fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n",
strerror(errno));
return GL_FALSE;
}
fprintf(stderr, "[miniglx] Readback mode: visible %dx%d virtual %dx%dx%d\n",
dpy->VarInfo.xres, dpy->VarInfo.yres,
dpy->VarInfo.xres_virtual, dpy->VarInfo.yres_virtual,
dpy->VarInfo.bits_per_pixel);
/* Get the fixed screen info */
if (ioctl(dpy->FrameBufferFD, FBIOGET_FSCREENINFO, &dpy->FixedInfo)) {
fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n",
@ -558,6 +583,51 @@ _glthread_GetID(void)
/*@}*/
/**
* \brief Scan linux /prog/bus/pci/devices file to determine hardware
* chipset based on supplied busid.
*
* \return non-zeros on success, zero otherwise.
*
* \internal
*/
static int get_chipset_from_busid( Display *dpy )
{
char buf[0x200];
FILE *file;
const char *fname = "/proc/bus/pci/devices";
int retval = 0;
if (!(file = fopen(fname,"r"))) {
fprintf(stderr, "couldn't open %s: %s\n", fname, strerror(errno));
return 0;
}
while (fgets(buf, sizeof(buf)-1, file)) {
int nr, bus, dev, fn, vendor, device;
nr = sscanf(buf, "%02x%01x%01x\t%04x%04x", &bus, &dev, &fn,
&vendor, &device);
if (nr != 5)
break;
if (bus == dpy->pciBus && dev == dpy->pciDevice && fn == dpy->pciFunc) {
retval = device;
break;
}
}
fclose(file);
if (retval)
fprintf(stderr, "[miniglx]: probed chipset 0x%x\n", retval);
else
fprintf(stderr, "[miniglx]: failed to probe chipset\n");
return retval;
}
/**
* \brief Read settings from a configuration file.
*
@ -565,7 +635,7 @@ _glthread_GetID(void)
*
* \internal
*/
int __read_config_file( Display *dpy )
static int __read_config_file( Display *dpy )
{
FILE *file;
const char *fname;
@ -603,6 +673,7 @@ int __read_config_file( Display *dpy )
*/
while (isspace(*opt)) opt++;
val = opt;
if (*val == '#') continue; /* comment */
while (!isspace(*val) && *val != '=' && *val) val++;
tmp1 = val;
while (isspace(*val)) val++;
@ -649,6 +720,10 @@ int __read_config_file( Display *dpy )
}
fclose(file);
if (dpy->chipset == 0 && dpy->pciBusID != 0)
dpy->chipset = get_chipset_from_busid( dpy );
return 1;
}