>>-----Original Message----- >>From: Chris Wilson [mailto:[email protected]] >>Sent: 2010年11月9日 18:50 >>To: Zou, Nanhai; [email protected]; Zhao, Jian J >>Subject: RE: [PATCH] drm/i915/ringbuffer: set force wake bit before reading >>ring register >> >>On Tue, 9 Nov 2010 17:17:07 +0800, "Zou, Nanhai" <[email protected]> wrote: >> >>> I have tested this patch with the read ring head from status page workaround >>patch reverted. >>> Seems it works on my SNB box. >> >>I needed to add a udelay(100) to i915_safe_read for my rev 8. Can you >>check if there is a recommended delay for FORCEWAKE? >>-Chris >> Dose a post read to FORCEWAKE help?
Thanks Zou Nanhai >>-- >>Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
