From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Kuoppala Subject: Re: [PATCH] drm/i915: Clear FORCEWAKE when taking over from BIOS Date: Fri, 19 Oct 2012 12:10:15 +0300 Message-ID: <876266zv2g.fsf@gaia.fi.intel.com> References: <507E4D8F.4080901@fisher-privat.net> <1350557170-6268-1-git-send-email-chris@chris-wilson.co.uk> <87bofzylh2.fsf@gaia.fi.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id E20A29EBA4 for ; Fri, 19 Oct 2012 02:10:18 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Chris Wilson , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Fri, 19 Oct 2012 09:02:10 +0100, Chris Wilson wrote: > On Fri, 19 Oct 2012 10:22:49 +0300, Mika Kuoppala wrote: > > Would it be possible to call in here: > > > > if (HAS_FORCE_WAKE(dev)) > > dev_priv->gt.force_wake_put(dev_priv); > > > > and get rid of the per gen forcewake resets? > > No. Perhaps I would have better gone with intel_gt_sanitize(), as the > purpose is not to undo our own settings of the forcewake but undo that > of nefarious foreign interests such as the BIOS. As such we need to > explicitly clear the register rather than clear a bit. > -Chris Thanks for explanation. Reviewed-by: Mika Kuoppala > -- > Chris Wilson, Intel Open Source Technology Centre --------------------------------------------------------------------- Intel Finland Oy Registered Address: PL 281, 00181 Helsinki Business Identity Code: 0357606 - 4 Domiciled in Helsinki This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.