From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Jakobi Subject: Re: drm/exynos: when to call dma_map_sg() on a GEM object? Date: Mon, 2 Nov 2015 11:29:31 +0100 Message-ID: <56373B0B.2050902@math.uni-bielefeld.de> References: <5633D696.8020103@math.uni-bielefeld.de> <563713C4.2050309@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <563713C4.2050309@samsung.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Joonyoung Shim , ML dri-devel , linux-samsung-soc , Marek Szyprowski List-Id: linux-samsung-soc@vger.kernel.org SGVsbG8gSm9vbnlvdW5nLAoKCkpvb255b3VuZyBTaGltIHdyb3RlOgo+IE9uIDEwLzMxLzIwMTUg MDU6NDQgQU0sIFRvYmlhcyBKYWtvYmkgd3JvdGU6Cj4+IEhleSB0aGVyZSwKPj4KPj4gdGhpcyBx dWVzdGlvbiBhcm9zZSBkdXJpbmcgc29tZSBkaXNjdXNzaW9uIHdpdGggc29tZW9uZSBjb25jZXJu aW5nIHRoZQo+PiBFeHlub3MgbWl4ZXIgYW5kIEcyRC4KPj4KPj4gVGhlIHF1ZXN0aW9uIGlzIHRo ZSBmb2xsb3dpbmcuIENvbnNpZGVyIHRoZSBFeHlub3MgbWl4ZXIgd2hlbiBydW4gdW5kZXIKPj4g dGhlIElPTU1VICh0aGF0J3Mgc3lzbW11X3R2IElJUkMpLiBXaGF0IGV4YWN0bHkgZG9lcyBzZXR1 cCB0aGUgSU9NTVUKPj4gbWFwcGluZyBzbyB0aGF0IHRoZSBtaXhlciBjYW4gc2Nhbm91dCB0aGUg ZnJhbWVidWZmZXI/Cj4+Cj4gCj4gSU9NTVUgbWFwcGluZyBpcyBpbiBkbWFfYWxsb2NfYXR0cnMo KS4gQWxyZWFkeSBJT01NVSB3YXMgaW50ZWdyYXRlZCBpbgo+IHRoZSBETUEgbWFwcGluZyBBUEkg b24gQVJNIGFyY2guClRoYW5rcywgSSdtIGdvaW5nIHRvIHRha2UgYSBjbG9zZXIgbG9vayBhdCBk bWFfYWxsb2NfYXR0cnMoKSB0aGVuLgoKCj4+IFRoZXJlIGlzIGV4eW5vc19nZW1fbWFwX3NndF93 aXRoX2RtYSgpIGluIHRoZSBFeHlub3MgR0VNIGNvZGUsIGJ1dCBpdCdzCj4+IGN1cnJlbnRseSBl eGNsdXNpdmVseSB1c2VkIGZvciB0aGUgRzJEIGFuZCBvbmx5IHdoZW4gZGVhbGluZyB3aXRoCj4+ IHVzZXJwdHIgKGFuZCBub3QgR0VNKSB0aGVyZS4KPj4KPj4gSSB3YXMgbG9va2luZyBhdCBleHlu b3NfZHJtX2FsbG9jX2J1ZigpIHNpbmNlIHRoaXMgY2FsbGVkIHdoZW4KPj4gYWxsb2NhdGluZyBh IEJPIHRvIGJlIHVzZWQgYXMgc2Nhbm91dC4KPj4KPj4gSSBzZWUgZG1hX2FsbG9jX2F0dHJzKCkg YmVpbmcgY2FsbGVkLCB3aGljaCBhbHNvIHNldHMgdGhlIERNQSBhZGRyZXNzCj4+IHRoYXQgaXMg bGF0ZXIgdXNlZCBpbiB0aGUgbWl4ZXIgY29kZS4gQnV0IERNQV9BVFRSX05PX0tFUk5FTF9NQVBQ SU5HIGlzCj4+IHBhc3NlZCwgc28gbm8gbWFwcGluZyBpcyBkb25lIGF0IHRoaXMgcG9pbnQuCj4+ Cj4gCj4gRGlkIHlvdSByZWFkIERvY3VtZW50YXRpb24vRE1BLWF0dHJpYnV0ZXMudHh0IGRvY3Vt ZW50PwpJIGRpZCwgYnV0IEkgZ3Vlc3MgSSBzaG91bGQgcmVhZCBpdCBhZ2Fpbi4uLgoKCj4gRE1B X0FUVFJfTk9fS0VSTkVMX01BUFBJTkcgaXMganVzdCB0byBhdm9pZCBjcmVhdGluZyBhIGtlcm5l bCB2aXJ0dWFsCj4gbWFwcGluZyBmb3IgdGhlIGFsbG9jYXRlZCBidWZmZXIgb24gQVJNIGFyY2gu CkFoIE9LLCBzbyB0aGUgSU9NTVUgbWFwcGluZyBpcyBhbHdheXMgZXN0YWJsaXNoZWQuCgoKPj4g SXMgdGhlIG1hcHBpbmcgZG9uZSBzb21ld2hlcmUgZWxzZSwgb3IgaXMgaXQgc2ltcGx5IG5vdCBu ZWNlc3NhcnkgaGVyZT8KPj4KPiAKPiBXaGF0IGlzIHRoZSBtYXBwaW5nIHlvdSBtZWFuPyBBcyB5 b3Uga25vdywgdGhlIERNQSBhZGRyZXNzIG9mIHRoZQo+IG1lbW9yeSBnZXRzIGZyb20gZG1hX2Fs bG9jX2F0dHJzKCkgYW5kIGl0IGNhbiBiZSB1c2VkIGJ5IGRldmljZS4gVGhlcmUKPiBpcyBubyBy ZWFzb24gdG8gdXNlIGRtYV9tYXBfKigpLgpGcm9tIG15IHVuZGVyc3RhbmRpbmcgdGhlIG1peGVy IGRvZXNuJ3QgZGlyZWN0bHkgYWNjZXNzIHRoZSBwaHlzaWNhbAptZW1vcnkgd2hlbiBydW5uaW5n IHVuZGVyIElPTU1VLiBJdCBhY2Nlc3NlcyBtZW1vcnkgdGhyb3VnaCBzeXNtbXVfdHYsCnNvIG15 IHF1ZXN0aW9uIHdhcyB3aG8gZG9lcyB0aGUgc2V0dXAgc28gdGhhdCBzeXNtbXVfdHYgImtub3dz IiBob3cgdG8KdHJhbnNsYXRlIG1lbW9yeSBhY2Nlc3Nlcy4KCgpXaXRoIGJlc3Qgd2lzaGVzLApU b2JpYXMKCgo+IAo+IFRoYW5rcy4KPiAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZy ZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vZHJpLWRldmVsCg==