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#include "nouveau_state_cache.h"
#include "nouveau_context.h"
#include "nouveau_object.h"
#include "nouveau_fifo.h"
#define BEGIN_RING_NOFLUSH(subchannel,tag,size) do { \
if (nmesa->fifo.free <= (size)) \
WAIT_RING(nmesa,(size)); \
OUT_RING( ((size)<<18) | ((subchannel) << 13) | (tag)); \
nmesa->fifo.free -= ((size) + 1); \
}while(0)
// flush all the dirty state
void nouveau_state_cache_flush(nouveauContextPtr nmesa)
{
int i=0;
int run=0;
// fast-path no state changes
if (!nmesa->state_cache.dirty)
return;
nmesa->state_cache.dirty=0;
do
{
// jump to a dirty state
while((nmesa->state_cache.hdirty[i/NOUVEAU_STATE_CACHE_HIER_SIZE]==0)&&(i<NOUVEAU_STATE_CACHE_ENTRIES))
i=(i&~(NOUVEAU_STATE_CACHE_HIER_SIZE-1))+NOUVEAU_STATE_CACHE_HIER_SIZE;
while((nmesa->state_cache.atoms[i].dirty==0)&&(i<NOUVEAU_STATE_CACHE_ENTRIES))
i++;
// figure out a run of dirty values
run=0;
while((nmesa->state_cache.atoms[i+run].dirty)&&(i+run<NOUVEAU_STATE_CACHE_ENTRIES))
run++;
// output everything as a single run
if (run>0) {
int j;
BEGIN_RING_NOFLUSH(NvSub3D, i*4, run);
for(j=0;j<run;j++)
{
OUT_RING(nmesa->state_cache.atoms[i+j].value);
nmesa->state_cache.atoms[i+j].dirty=0;
if ((i+j)%NOUVEAU_STATE_CACHE_HIER_SIZE==0)
nmesa->state_cache.hdirty[(i+j)/NOUVEAU_STATE_CACHE_HIER_SIZE-1]=0;
}
i+=run;
}
}
while(i<NOUVEAU_STATE_CACHE_ENTRIES);
nmesa->state_cache.hdirty[NOUVEAU_STATE_CACHE_HIER_SIZE/NOUVEAU_STATE_CACHE_HIER_SIZE-1]=0;
}
// inits the state cache
void nouveau_state_cache_init(nouveauContextPtr nmesa)
{
int i;
for(i=0;i<NOUVEAU_STATE_CACHE_ENTRIES;i++)
{
nmesa->state_cache.atoms[i].dirty=0;
nmesa->state_cache.atoms[i].value=0xDEADBEEF; // nvidia cards like beef
}
nmesa->state_cache.dirty=0;
}
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