From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Jakobi Subject: Re: exynos-drm: display manager fails to start without IOMMU problem Date: Wed, 19 Oct 2016 18:23:50 +0200 Message-ID: <58079E16.50302@math.uni-bielefeld.de> References: <1470850251-9150-1-git-send-email-shuahkh@osg.samsung.com> <57ABB1ED.1080301@samsung.com> <57ABB31E.1070802@osg.samsung.com> <57AE0736.6020705@osg.samsung.com> <57AE0CCB.1010708@osg.samsung.com> <57B29925.4020600@samsung.com> <1b2c3b31-7127-af2f-18a2-f3a28567e28d@osg.samsung.com> <2173cc13-7c77-1a38-501d-2c0f522ff5d5@osg.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from smtp.math.uni-bielefeld.de (smtp.math.uni-bielefeld.de [129.70.45.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2884D6E06D for ; Wed, 19 Oct 2016 16:23:53 +0000 (UTC) In-Reply-To: <2173cc13-7c77-1a38-501d-2c0f522ff5d5@osg.samsung.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Shuah Khan , Inki Dae , jy0922.shim@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, airlied@linux.ie, kgene@kernel.org, Krzysztof Kozlowski Cc: linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org SGVsbG8gU2h1YWgsCgpqdXN0IGEgc2hvcnQgbm90ZSB0aGF0IG1vcmUgbWlzbGVhZGluZyBjb21t ZW50cyBhYm91dCBkZWZhdWx0IGFsbG9jYXRpb24KZmxhZ3MgY2FuIGJlIGZvdW5kIGluIGxpYmRy bS4KCmh0dHBzOi8vY2dpdC5mcmVlZGVza3RvcC5vcmcvbWVzYS9kcm0vdHJlZS9leHlub3MvZXh5 bm9zX2RybS5jCgpTZWUgZS5nLiB0aGUgY29tbWVudCBmb3IgZXh5bm9zX2JvX2NyZWF0ZSgpLgoK SW4gbXkgb3BpbmlvbiwgdGhlIHdob2xlIGFwcHJvYWNoIHRvIF9zZXRfIGEgYml0IHRvIGdldCBu b24tY29udGlnaW91cwptZW1vcnkgaXMgbWVzc2VkIHVwLiBJdCB3b3VsZCBtYWtlIG1vcmUgc2Vu c2UgdG8gbWUgdG8gc2V0IGEgYml0IHRvCnJlcXVlc3QgYW4gYWRkaXRpb25hbCBwcm9wZXJ0eSAo aGVyZSAiYmVpbmcgY29udGlndW91cyIpIG9mIHRoZSBtZW1vcnkuCgpBbnl3YXksIGNsZWFyaW5n IHVwIHRoaXMgc2l0dWF0aW9uIGlzIGhpZ2hseSBhcHByZWNpYXRlZCEKCk1vcmUgY29tbWVudHMg YmVsb3cuCgpXaXRoIGJlc3Qgd2lzaGVzLApUb2JpYXMKCgoKU2h1YWggS2hhbiB3cm90ZToKPiBS ZXN0YXJ0aW5nIHRoZSB0aHJlYWQgd2l0aCBhIGRpZmZlcmVudCBzdWJqZWN0IGxpbmU6Cj4gCj4g SSBoYXZlbid0IGdpdmVuIHVwIG9uIHRoaXMgeWV0LiBJIGFtIHN0aWxsIHNlZWluZyB0aGUgZm9s bG93aW5nIGZhaWx1cmU6Cj4gCj4gQWRkaXRpb25hbCBkZWJ1ZyBtZXNzYWdlcyBJIGFkZGVkOgo+ IFsgICAxNS4yODc0MDNdIGV4eW5vc19kcm1fZ2VtX2NyZWF0ZV9pb2N0bCgpIDEKPiBbICAgMTUu Mjg3NDE5XSBleHlub3NfZHJtX2dlbV9jcmVhdGUoKSBmbGFncyAxCj4gCj4gWyAgIDE1LjMxMTUx MV0gW2RybTpleHlub3NfZHJtX2ZyYW1lYnVmZmVyX2luaXRdICpFUlJPUiogTm9uLWNvbnRpZ3Vv dXMgR0VNIG1lbW9yeSBpcyBub3Qgc3VwcG9ydGVkLgo+IAo+IEFkZGl0aW9uYWwgZGVidWcgbWVz c2FnZSBJIGFkZGVkOgo+IFsgICAxNS4zMTg5ODFdIFtkcm06ZXh5bm9zX3VzZXJfZmJfY3JlYXRl XSAqRVJST1IqIGZhaWxlZCB0byBpbml0aWFsaXplIGZyYW1lYnVmZmVyCj4gCj4gVGhpcyBpcyB3 aGF0IGhhcHBlbnM6Cj4gCj4gMS4gZXh5bm9zX2RybV9nZW1fY3JlYXRlX2lvY3RsKCkgZ2V0cyBj YWxsZWQgd2l0aCBFWFlOT1NfQk9fTk9OQ09OVElHIHJlcXVlc3QKPiAyLiBleHlub3NfZHJtX2dl bV9jcmVhdGUoMCBnb2VzIGFoZWFkIGFuZCBjcmVhdGVzIHRoZSBHRU0gYnVmZmVycwo+IDMuIGV4 eW5vc191c2VyX2ZiX2NyZWF0ZSgpIHRyaWVzIHRvIGFzc29jaWF0ZSBHRU0gdG8gZmIgYW5kIGZh aWxzIGR1cmluZwo+ICAgIGNoZWNrX2ZiX2dlbV9tZW1vcnlfdHlwZSgpCj4gCj4gQXQgdGhpcyBw b2ludCwgdGhlcmUgaXMgbm8gcmVjb3ZlcnkgYW5kIGxpZ2h0ZG0gZmFpbHMKPiAKPiB4Zjg2LXZp ZGVvLWFybXNvYy9zcmMvZHJtbW9kZV9leHlub3MvZHJtbW9kZV9leHlub3MuYyBhc3N1bWVzIGNv bnRpZ3VvdXMKPiBhbGxvY2F0aW9ucyBhcmUgbm90IHN1cHBvcnRlZCBpbiBzb21lIGV4eW5vcyBk cm0gdmVyc2lvbnM6IFRoZSBmb2xsb3dpbmcKPiBjb21taXQgaW50cm9kdWNlZCB0aGlzIGNoYW5n ZToKPiAKPiBodHRwczovL2dpdC5saW5hcm8ub3JnL2FybS94b3JnL2RyaXZlci94Zjg2LXZpZGVv LWFybXNvYy5naXQvY29tbWl0ZGlmZi8zYmUxZjYyNzM0NDFmZTk1ZGQ0NDJmNDQwNjQzODczMjJl MTZiN2U5Cj4gCj4gZXhjZXJwdHMgZnJvbSB0aGUgZGlmZjotICAgICAgIGlmIChjcmVhdGVfZ2Vt LT5idWZfdHlwZSA9PSBBUk1TT0NfQk9fU0NBTk9VVCkKPiAtICAgICAgICAgICAgICAgY3JlYXRl X2V4eW5vcy5mbGFncyA9IEVYWU5PU19CT19DT05USUc7Cj4gLSAgICAgICBlbHNlCj4gLSAgICAg ICAgICAgICAgIGNyZWF0ZV9leHlub3MuZmxhZ3MgPSBFWFlOT1NfQk9fTk9OQ09OVElHOwo+ICsK PiArICAgICAgIC8qIENvbnRpZ3VvdXMgYWxsb2NhdGlvbnMgYXJlIG5vdCBzdXBwb3J0ZWQgaW4g c29tZSBleHlub3MgZHJtIHZlcnNpb25zLgo+ICsgICAgICAgICogV2hlbiB0aGV5IGFyZSBzdXBw b3J0ZWQgYWxsIGFsbG9jYXRpb25zIGFyZSBlZmZlY3RpdmVseSBjb250aWd1b3VzCj4gKyAgICAg ICAgKiBhbnl3YXksIHNvIGZvciBzaW1wbGljaXR5IHdlIGFsd2F5cyByZXF1ZXN0IG5vbiBjb250 aWd1b3VzIGJ1ZmZlcnMuCj4gKyAgICAgICAgKi8KPiArICAgICAgIGNyZWF0ZV9leHlub3MuZmxh Z3MgPSBFWFlOT1NfQk9fTk9OQ09OVElHOwo+IAo+IFRoZXJlIG1pZ2h0IGhhdmUgYmVlbiBsb2dp YyBvbiBleHlub3NfZHJtIHRoYXQgZm9yY2VkIENvbnRpZyB3aGVuIGl0IGNvdWRuJ3QKPiBzdXBw b3J0IE5PTkNPTlRJRy4gQXQgbGVhc3QsIHRoYXQgaXMgd2hhdCB0aGlzIGNvbW1lbnQgc3VnZ2Vz dHMuIFRoaXMgYXNzdW1wdGlvbgo+IGRvZXNuJ3QgYXBwZWFyIHRvIGJlIGEgZ29vZCBvbmUgYW5k IG5vdCBzdXJlIGlmIHRoaXMgY2hhbmdlIHdhcyBtYWRlIHRvIGZpeCBhIGJ1Zy4KPiAKPiBBZnRl ciB0aGUgSU9NTVUgc3VwcG9ydCwgdGhpcyBhc3N1bXB0aW9uIGlzIG5vIGxvbmdlciB0cnVlLiBI ZW5jZSwgd2l0aCBJT01NVQo+IHN1cHBvcnQsIGxhdGVzdCBrZXJuZWxzIGhhdmUgYSBtaXNtYXRj aCB3aXRoIHRoZSBpbnN0YWxsZWQgeGY4Ni12aWRlby1hcm1zb2MKPiAKPiBUaGlzIGlzIHdoYXQg SSBhbSBydW5uaW5nIGludG8uIFRoaXMgbGVhZHMgdG8gdGhlIGZvbGxvd2luZyBxdWVzdGlvbjoK PiAKPiAxLiBIb3cgZG8gd2UgZW5zdXJlIGV4eW5vc19kcm0ga2VybmVsIGNoYW5nZXMgZG9uJ3Qg YnJlYWsgdXNlci1zcGFjZQo+ICAgIHNwZWNpZmljYWxseSB4Zjg2LXZpZGVvLWFybXNvYwo+IDIu IFRoaXMgc2VlbXMgdG8gaGF2ZSBnb25lIHVuZGV0ZWN0ZWQgZm9yIGEgd2hpbGUuIEkgc2VlIGEg Y2hhbmdlIGluCj4gICAgZXh5bm9zX2RybV9nZW1fZHVtYl9jcmVhdGUoKSB0aGF0IGlzIHByb2Jh Ymx5IGFkZHJlc3NpbmcgdGhpcyB0eXBlCj4gICAgb2YgYnJlYWthZ2UuIENvbW1pdCAxMjJiZWVh ODRiYjkwMjM2YjFhZTU0NWYwODI2N2FmNTg1OTFjMjFiIGFkZHMKPiAgICBoYW5kbGluZyBmb3Ig SU9NTVUgTk9OQ09OVElHIGNhc2UuCkkgZG9uJ3QgdGhpbmsgdGhhdCB0aGlzIGNvbW1pdCBpcyBy ZWxhdGVkIHRvIHRoZSBpc3N1ZSwgc2luY2UgaXQgaXMgb25seQp1c2VkIGZvciB0aGUgZ2VuZXJp YyBkdW1iIGJ1ZmZlciBpb2N0bCwgd2hpbGUgYXJtc29jIGlzIHVzaW5nIGFuIEV4eW5vcwpzcGVj aWZpYyBpb2N0bC4KClNvIGluIHBhcnRpY3VsYXIgeW91IHNob3VsZG4ndCBzZWUgdGhlIGlzc3Vl IHdpdGgKeGY4Ni12aWRlby1tb2Rlc2V0dGluZy4gTWlnaHQgYmUgd29ydGggdHJ5aW5nIHRoYXQg b25lIG91dD8KCgo+IAo+IEFueXdheSwgSSBhbSBpbnRlcmVzdGVkIGluIGdldHRpbmcgdGhlIGV4 eW5vc19kcm0ga2VybmVsIHNpZGUgY29kZQo+IGFuZCB4Zjg2LXZpZGVvLWFybXNvYyBpbiBzeW5j IHRvIHJlc29sdmUgdGhlIGlzc3VlLgo+IAo+IENvdWxkIHlvdSByZWNvbW1lbmQgYSBnb2luZyBm b3J3YXJkIHBsYW4/Cj4gCj4gSSBjYW4gc3VibWl0IGEgcGF0Y2ggdG8geGY4Ni12aWRlby1hcm1z b2MuIEkgYW0gYWxzbyBsb29raW5nIGFoZWFkIHRvCj4gc2VlIGlmIHdlIGNhbiBhdm9pZCBzdWNo IGJyZWFrcyBpbiB0aGUgZnV0dXJlIGJ5IGtlZXBpbmcga2VybmVsIGFuZAo+IHhmODYtdmlkZW8t YXJtc29jIGluIHN5bmMuCj4gCj4gdGhhbmtzLAo+IC0tIFNodWFoCj4gCj4gLS0KPiBUbyB1bnN1 YnNjcmliZSBmcm9tIHRoaXMgbGlzdDogc2VuZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgbGludXgt c2Ftc3VuZy1zb2MiIGluCj4gdGhlIGJvZHkgb2YgYSBtZXNzYWdlIHRvIG1ham9yZG9tb0B2Z2Vy Lmtlcm5lbC5vcmcKPiBNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwu b3JnL21ham9yZG9tby1pbmZvLmh0bWwKPiAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3Rz LmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xp c3RpbmZvL2RyaS1kZXZlbAo=