From mboxrd@z Thu Jan 1 00:00:00 1970 From: Imre Deak Subject: Re: [PATCH 1/2] drm/i915/bxt: work around HW coherency issue when accessing GPU seqno Date: Mon, 08 Jun 2015 20:14:44 +0300 Message-ID: <1433783684.21280.12.camel@intel.com> References: <1433780924-7673-1-git-send-email-imre.deak@intel.com> <1433780924-7673-2-git-send-email-imre.deak@intel.com> <5575CBF0.5090109@intel.com> Reply-To: imre.deak@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 53D0E6E330 for ; Mon, 8 Jun 2015 10:14:47 -0700 (PDT) In-Reply-To: <5575CBF0.5090109@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Dave Gordon Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gbWEsIDIwMTUtMDYtMDggYXQgMTg6MDggKzAxMDAsIERhdmUgR29yZG9uIHdyb3RlOgo+IE9u IDA4LzA2LzE1IDE3OjI4LCBJbXJlIERlYWsgd3JvdGU6Cj4gPiBCeSBydW5uaW5nIGlndC9zdG9y ZV9kd29yZF9sb29wX3JlbmRlciBvbiBCWFQgd2UgY2FuIGhpdCBhIGNvaGVyZW5jeQo+ID4gcHJv YmxlbSB3aGVyZSB0aGUgc2Vxbm8gd3JpdHRlbiBhdCBHUFUgY29tbWFuZCBjb21wbGV0aW9uIHRp bWUgaXMgbm90Cj4gPiBzZWVuIGJ5IHRoZSBDUFUuIFRoaXMgcmVzdWx0cyBpbiBfX2k5MTVfd2Fp dF9yZXF1ZXN0IHNlZWluZyB0aGUgc3RhbGUKPiA+IHNlcW5vIGFuZCBub3QgY29tcGxldGluZyB0 aGUgcmVxdWVzdCAobm90IGNvbnNpZGVyaW5nIHRoZSBsb3N0Cj4gPiBpbnRlcnJ1cHQvR1BVIHJl c2V0IG1lY2hhbmlzbSkuIEkgYWxzbyB2ZXJpZmllZCB0aGF0IHRoaXMgaXNuJ3QgYSBjYXNlCj4g PiBvZiBhIGxvc3QgaW50ZXJydXB0LCBvciB0aGF0IHRoZSBjb21tYW5kIGRpZG4ndCBjb21wbGV0 ZSBzb21laG93OiB3aGVuCj4gPiB0aGUgY29oZXJlbmN5IGlzc3VlIG9jY3VyZWQgSSByZWFkIHRo ZSBzZXFubyB2aWEgYW4gdW5jYWNoZWQgR1RUIG1hcHBpbmcKPiA+IHRvby4gV2hpbGUgdGhlIGNh Y2hlZCB2ZXJzaW9uIG9mIHRoZSBzZXFubyBzdGlsbCBzaG93ZWQgdGhlIHN0YWxlIHZhbHVlCj4g PiB0aGUgb25lIHJlYWQgdmlhIHRoZSB1bmNhY2hlZCBtYXBwaW5nIHdhcyB0aGUgY29ycmVjdCBv bmUuCj4gPiAKPiA+IFdvcmsgYXJvdW5kIHRoaXMgaXNzdWUgYnkgY2xmbHVzaGluZyB0aGUgY29y cmVzcG9uZGluZyBDUFUgY2FjaGVsaW5lCj4gPiBmb2xsb3dpbmcgYW55IHN0b3JlIG9mIHRoZSBz ZXFubyBhbmQgcHJlY2VkaW5nIGFueSByZWFkaW5nIG9mIGl0LiBXaGVuCj4gPiByZWFkaW5nIGl0 IGRvIHRoaXMgb25seSB3aGVuIHRoZSBjYWxsZXIgZXhwZWN0cyBhIGNvaGVyZW50IHZpZXcuCj4g PiAKPiA+IFRlc3RjYXNlOiBpZ3Qvc3RvcmVfZHdvcmRfbG9vcF9yZW5kZXIKPiA+IFNpZ25lZC1v ZmYtYnk6IEltcmUgRGVhayA8aW1yZS5kZWFrQGludGVsLmNvbT4KPiAKPiBOb3QgbmVjZXNzYXJp bHkgYSBjdXJlIGZvciB0aGlzLCBidXQgQlNwZWMgc2F5cyBvZiBNSV9TVE9SRV9EQVRBX0lNTQo+ IChhbmQgTUlfU1RPUkVfREFUQV9JTkRFWCk6Cj4gCj4gCVRoaXMgY29tbWFuZCBzaW1wbHkgaW5p dGlhdGVzIHRoZSB3cml0ZSBvcGVyYXRpb24gd2l0aAo+IAljb21tYW5kIGV4ZWN1dGlvbiBwcm9j ZWVkaW5nIG5vcm1hbGx5LiBBbHRob3VnaCB0aGUgd3JpdGUKPiAJb3BlcmF0aW9uIGlzIGd1YXJh bnRlZWQgdG8gY29tcGxldGUgImV2ZW50dWFsbHkiLCB0aGVyZSBpcwo+IAlubyBtZWNoYW5pc20g dG8gc3luY2hyb25pemUgY29tbWFuZCBleGVjdXRpb24gd2l0aCB0aGUKPiAJY29tcGxldGlvbiAo b3IgZXZlbiBpbml0aWF0aW9uKSBvZiB0aGVzZSBvcGVyYXRpb25zLgo+IAo+IFNvIHNob3VsZG4n dCB3ZSB1c2UgTUlfRkxVU0hfRFcgb3IgUElQRV9DT05UUk9MIHRvIHVwZGF0ZSB0aGUgc2Vxbm8g aW4KPiB0aGUgSFdTUCBpbnN0ZWFkPwoKSSBoYXZlIHRyaWVkIHRvIHVzZSBQSVBFX0NPTlRST0wg aW5zdGVhZCBvZiBNSV9TVE9SRV9EQVRBX0lNTSwgYnV0IHRoYXQKZGlkbid0IHNvbHZlIHRoaXMg aXNzdWUuIFdpdGggdGhlIG5ldwppZ3Qvc3RvcmVfZHdvcmRfYmF0Y2hlc19sb29wL2NhY2hlZC1t YXBwaW5nIHlvdSBjYW4gYWxzbyB2ZXJpZnkgdGhhdAp0aGlzIGlzbid0IHNvbWUgb3JkZXJpbmcg aXNzdWUuIEJ5IHdhaXRpbmcgZW5vdWdoIGFmdGVyIHRoZSBjb21tYW5kCmNvbXBsZXRlZCB0aGUg Q1BVJ3MgdmlldyBpcyBzdGlsbCBzdGFsZS4gUmVhZGluZyBpdCBhZnRlciBhIGNsZmx1c2gKcmVz dWx0cyBpbiB0aGUgY29ycmVjdCB2YWx1ZSBvbiB0aGUgb3RoZXIgaGFuZC4KCi0tSW1yZQoKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBt YWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMu ZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==