Re: [R300] rotating_gears snapshot

[Vladimir D. <vo...@mi...>]

One more thing: try this code instead:

 	if (IS_FAMILY_R300(dev_priv)) {
 		BEGIN_RING( 6 );

 		OUT_RING_REG(R300_RB3D_DSTCACHE_CTLSTAT, 0x00000002);
 		OUT_RING_REG(0x4F18, 0x00000001); /* Z cache? */

 		/* It seems a delay is needed */
   	        OUT_RING( CP_PACKET3( RADEON_CP_NOP, 0 ) );
 	        OUT_RING( 0x0 );

 		ADVANCE_RING();
 	}

I think the extra NOP packet will produce the necessary delay..

                      thank you

                           Vladimir Dergachev

On Fri, 31 Dec 2004, Peter Zubaj wrote:

> Hi,
>
> I played with it yesterday.
> I have x11perf lockups too. And X sometimes crash (simply exits) to
> login screen. I use FC3 and then when I do ctrl+alt+F1 (to get to
> console) system freezes (few uppers rows are redrawn (maybe by console
> text)), but no switch to text mode.
>
> When I uncomment these rows - then x11perf works (and no more X
> crash), but 3D locks as expexted:
>
> In radeon_cp.c in function radeon_do_cp_idle
>
> if (IS_FAMILY_R300(dev_priv)) {
> 	BEGIN_RING( 4 );
>
> 	OUT_RING_REG(R300_RB3D_DSTCACHE_CTLSTAT, 0x00000002);
> 	OUT_RING_REG(0x4F18, 0x00000001); /* Z cache? */
>
> 	ADVANCE_RING();
> }
>
> and in radeon_stat.c in function radeon_cp_dispatch_swap:
>
> if (IS_FAMILY_R300(dev_priv)) {
> 	/* Make sure the new caches are flushed */
> 	radeon_do_cp_idle(dev_priv);
> } else {
> 	BEGIN_RING(2);
>
> 	RADEON_WAIT_UNTIL_3D_IDLE();
>
> 	ADVANCE_RING();
> }
>
> changed to
>
> BEGIN_RING(2);
>
> RADEON_WAIT_UNTIL_3D_IDLE();
>
> ADVANCE_RING();
>
> Peter Zubaj
>
> 
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