From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Gordon Subject: Re: [PATCH v3] drm/i915: Avoid GPU Hang when comming out of s3 or s4 Date: Mon, 11 May 2015 11:08:17 +0100 Message-ID: <55507F91.1020504@intel.com> References: <1431330645-26704-1-git-send-email-peter.antoine@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 032836E151 for ; Mon, 11 May 2015 03:08:35 -0700 (PDT) In-Reply-To: <1431330645-26704-1-git-send-email-peter.antoine@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Peter Antoine , intel-gfx@lists.freedesktop.org Cc: deepak.s@intel.com, daniel.vetter@ffwll.ch, yex.tian@intel.com, david.weinehall@intel.com List-Id: intel-gfx@lists.freedesktop.org T24gMTEvMDUvMTUgMDg6NTAsIFBldGVyIEFudG9pbmUgd3JvdGU6Cj4gVGhpcyBwYXRjaCBmaXhl cyBhIHRpbWluZyBpc3N1ZSB0aGF0IGNhdXNlcyBhIEdQVSBoYW5nIHdoZW4gdGhlIHN5c3RlbQo+ IGNvbWVzIG91dCBvZiBwb3dlciBzYXZpbmcuCj4gCj4gRHVyaW5nIHBtX3Jlc3VtZSwgV2UgYXJl IHN1Ym1pdHRpbmcgYmF0Y2hidWZmZXJzIGJlZm9yZSBlbmFibGluZwo+IEludGVycnVwdHMgdGhp cyBpcyBjYXVzaW5nIHVzIHRvIG1pc3MgdGhlIGNvbnRleHQgc3dpdGNoIGludGVycnVwdCwKPiBh bmQgaW4gY29uc2VxdWVuY2UgaW50ZWxfZXhlY2xpc3RzX2hhbmRsZV9jdHhfZXZlbnRzIGlzIG5v dCB0cmlnZ2VyZWQuCj4gCj4gVGhpcyBwYXRjaCBpcyBiYXNlZCBvbiBhIHBhdGNoIGZyb20gRGVl cGFrIFMgPGRlZXBhay5zQGludGVsLmNvbT4KPiBmcm9tIGFub3RoZXIgcGxhdGZvcm0uCj4gCj4g VGhlIHBhdGNoIGZpeGVzIGFuIGlzc3VlIGludHJvZHVjZWQgYnk6Cj4gICBjb21taXQgZTc3Nzhi ZTFlYWI5MTgyNzRmNzk2MDNkN2MxN2IzZWM4YmU3NzM4Ngo+ICAgZHJtL2k5MTU6IEZpeCBzdGFy dHVwIGZhaWx1cmUgaW4gTFJDIG1vZGUgYWZ0ZXIgcmVjZW50IGluaXQgY2hhbmdlcwo+IAo+IFRo ZSBhYm92ZSBwYXRjaCBhZGRlZCBhIGNhbGwgdG8gaW5pdF9jb250ZXh0KCkgdG8gZml4IGFuIGlz c3VlIGludHJvZHVjZWQKPiBieSBhIHByZXZpb3VzIHBhdGNoLiBCdXQsIGl0IHRoZW4gb3BlbmVk IHVwIGEgc21hbGwgdGltaW5nIHdpbmRvdyBmb3IgdGhlCj4gYmF0Y2hlcyBiZWluZyBhZGRlZCBi eSB0aGUgaW5pdF9jb250ZXh0IChiYXNpY2FsbHkgc2V0dGluZyB1cCB0aGUgY29udGV4dCkKPiB0 byBjb21wbGV0ZSBiZWZvcmUgdGhlIGludGVycnVwdHMgaGF2ZSBiZWVuIHR1cm5lZCBvbiwgdGh1 cyBoYW5naW5nIHRoZQo+IEdQVS4KPiAKPiBCVUc6IGh0dHBzOi8vYnVncy5mcmVlZGVza3RvcC5v cmcvc2hvd19idWcuY2dpP2lkPTg5NjAwCj4gU2lnbmVkLW9mZi1ieTogUGV0ZXIgQW50b2luZSA8 cGV0ZXIuYW50b2luZUBpbnRlbC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5 MTVfZHJ2LmMgfCAxMCArKysrKysrLS0tCj4gIDEgZmlsZSBjaGFuZ2VkLCA3IGluc2VydGlvbnMo KyksIDMgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2k5MTVfZHJ2LmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5jCj4gaW5kZXggNmJi NmM0Ny4uOTBiMTMwOSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Ry di5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYuYwo+IEBAIC03MzQsNiAr NzM0LDEyIEBAIHN0YXRpYyBpbnQgaTkxNV9kcm1fcmVzdW1lKHN0cnVjdCBkcm1fZGV2aWNlICpk ZXYpCj4gIAlpbnRlbF9pbml0X3BjaF9yZWZjbGsoZGV2KTsKPiAgCWRybV9tb2RlX2NvbmZpZ19y ZXNldChkZXYpOwo+ICAKPiArCS8qIEludGVycnVwdHMgaGF2ZSB0byBlbmFibGVkIHNvIHRoYXQg YW55IGJhdGNoZXMgdGhhdCBhcmUgY29tcGxldGVkCj4gKwkgKiB3aGVuIHRoZSBjb250ZXh0IGlz IHJlc3RhcnRlZCBhcmUgY2F1Z2h0IHNvIHRoYXQgdGhlIHJpbmcgYnVmZmVyCj4gKwkgKiBkb2Vz IG5vdCBoYW5kbGUuCj4gKwkgKi8KClRoZSBjb21tZW50IGFib3ZlIGlzIHVuZ3JhbW1hdGljYWws IGFuZCB0aGUgZm9ybWF0IGlzIG5vdCB0aGUgcHJlZmVycmVkCm9uZS4gSG93IGFib3V0IHRoaXMg aW5zdGVhZDoKCgkvKgoJICogSW50ZXJydXB0cyBoYXZlIHRvIGJlIGVuYWJsZWQgYmVmb3JlIHJl aW5pdGlhbGlzaW5nIHRoZQoJICogaGFyZHdhcmUsIHNvIHRoYXQgYmF0Y2hidWZmZXJzIGNhbiBi ZSBzdWJtaXR0ZWQgYW5kIHRoZQoJICogcmVzdWx0aW5nIGludGVycnVwdHMgaGFuZGxlZC4gRmFp bHVyZSB0byBkbyBzbyB3aWxsIHJlc3VsdAoJICogaW4gYSByaW5nIGhhbmcsIGFzIHRoZSBiYXRj aGVzIHdpbGwgbm90IGJlIHNlZW4gdG8gY29tcGxldGUuCgkgKi8KCj4gKwlpbnRlbF9ydW50aW1l X3BtX2VuYWJsZV9pbnRlcnJ1cHRzKGRldl9wcml2KTsKPiArCj4gIAltdXRleF9sb2NrKCZkZXYt PnN0cnVjdF9tdXRleCk7Cj4gIAlpZiAoaTkxNV9nZW1faW5pdF9odyhkZXYpKSB7Cj4gIAkJRFJN X0VSUk9SKCJmYWlsZWQgdG8gcmUtaW5pdGlhbGl6ZSBHUFUsIGRlY2xhcmluZyB3ZWRnZWQhXG4i KTsKPiBAQCAtNzQxLDkgKzc0Nyw3IEBAIHN0YXRpYyBpbnQgaTkxNV9kcm1fcmVzdW1lKHN0cnVj dCBkcm1fZGV2aWNlICpkZXYpCj4gIAl9Cj4gIAltdXRleF91bmxvY2soJmRldi0+c3RydWN0X211 dGV4KTsKPiAgCj4gLQkvKiBXZSBuZWVkIHdvcmtpbmcgaW50ZXJydXB0cyBmb3IgbW9kZXNldCBl bmFibGluZyAuLi4gKi8KPiAtCWludGVsX3J1bnRpbWVfcG1fZW5hYmxlX2ludGVycnVwdHMoZGV2 X3ByaXYpOwo+IC0KPiArCS8qIFRoaXMgbXVzdCBmb2xsb3cgdGhlIHBtIGVuYWJsZSBpbnRlcnJ1 cHRzICovCj4gIAlpbnRlbF9tb2Rlc2V0X2luaXRfaHcoZGV2KTsKPiAgCj4gIAlzcGluX2xvY2tf aXJxKCZkZXZfcHJpdi0+aXJxX2xvY2spOwo+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9s aXN0aW5mby9pbnRlbC1nZngK