/* This version of AllocateMemoryMESA allocates only agp memory, and
* only does so after the point at which the driver has been
* initialized.
*
* Theoretically a valid context isn't required. However, in this
* implementation, it is, as I'm using the hardware lock to protect
* the kernel data structures, and the current context to get the
* device fd.
*/
void *intelAllocateMemoryMESA(__DRInativeDisplay *dpy, int scrn,
GLsizei size, GLfloat readfreq,
GLfloat writefreq, GLfloat priority)
{
GET_CURRENT_CONTEXT(ctx);
if (INTEL_DEBUG & DEBUG_IOCTL)
fprintf(stderr, "%s sz %d %f/%f/%f\n", __FUNCTION__, size, readfreq,
writefreq, priority);
if (getenv("INTEL_NO_ALLOC"))
return NULL;
if (!ctx || INTEL_CONTEXT(ctx) == 0)
return NULL;
return intelAllocateAGP( INTEL_CONTEXT(ctx), size );
}
void intelInitBatchBuffer( GLcontext *ctx )
{
intelContextPtr intel = INTEL_CONTEXT(ctx);
if (!intel->intelScreen->allow_batchbuffer || getenv("INTEL_NO_BATCH")) {
intel->alloc.size = 8 * 1024;
intel->alloc.ptr = malloc( intel->alloc.size );
intel->alloc.offset = 0;
}
else {
switch (intel->intelScreen->deviceID) {
case PCI_CHIP_I865_G:
/* HW bug? Seems to crash if batchbuffer crosses 4k boundary.
*/
intel->alloc.size = 8 * 1024;
break;
default:
/* This is the smallest amount of memory the kernel deals with.
* We'd ideally like to make this smaller.
*/
intel->alloc.size = 1 << intel->intelScreen->logTextureGranularity;
break;
}
intel->alloc.ptr = intelAllocateAGP( intel, intel->alloc.size );
if (intel->alloc.ptr)
intel->alloc.offset =
intelAgpOffsetFromVirtual( intel, intel->alloc.ptr );
}
if (!intel->alloc.ptr) {
FALLBACK(intel, INTEL_FALLBACK_NO_BATCHBUFFER, 1);
}
else {
intel->prim.flush = 0;
intel->vtbl.emit_invarient_state( intel );
/* Make sure this gets to the hardware, even if we have no cliprects:
*/
LOCK_HARDWARE( intel );
intelFlushBatchLocked( intel, GL_TRUE, GL_FALSE, GL_TRUE );
UNLOCK_HARDWARE( intel );
}
}
