From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [RFC] dmaengine: Add metadat_ops for dma_async_tx_descriptor From: Peter Ujfalusi Message-Id: <052ebdd9-7e68-5b78-52c3-304376f48777@ti.com> Date: Wed, 18 Jul 2018 13:06:50 +0300 To: Vinod Cc: radheys@xilinx.com, vinod.koul@intel.com, lars@metafoo.de, michal.simek@xilinx.com, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, dan.j.williams@intel.com, appanad@xilinx.com, linux-arm-kernel@lists.infradead.org List-ID: SGkgVmlub2QsCgpPbiAyMDE4LTA3LTEwIDA4OjUyLCBWaW5vZCB3cm90ZToKPiAKPiBIZXkgUGV0 ZXIsCj4gCj4gU29ycnkgZm9yIGxhdGUgcmVzcG9uc2Ugb24gdGhpcy4uCgpObyBwcm9ibGVtLCBJ IHdhcyBhd2F5IG15c2VsZiBhbHNvLi4uCgo+IE9uIDAxLTA2LTE4LCAxMzoyNCwgUGV0ZXIgVWpm YWx1c2kgd3JvdGU6Cj4+IElmIHRoZSBETUEgc3VwcG9ydHMgcGVyIGRlc2NyaXB0b3IgbWV0YWRh dGEgaXQgY2FuIGltcGxlbWVudCB0aGUgYXR0YWNoLAo+PiBnZXRfcHRyL3NldF9sZW4gY2FsbGJh Y2tzLgo+Pgo+PiBDbGllbnQgZHJpdmVycyBtdXN0IG9ubHkgdXNlIGVpdGhlciBhdHRhY2ggb3Ig Z2V0X3B0ci9zZXRfbGVuIHRvIGF2b2lkCj4+IG1pc3MgY29uZmlndXJhdGlvbi4KPj4KPj4gV3Jh cHBlcnMgYXJlIGFsc28gYWRkZWQgZm9yIHRoZSBtZXRhZGF0YV9vcHM6Cj4+IGRtYWVuZ2luZV9k ZXNjX2F0dGFjaF9tZXRhZGF0YSgpCj4+IGRtYWVuZ2luZV9kZXNjX2dldF9tZXRhZGF0YV9wdHIo KQo+PiBkbWFlbmdpbmVfZGVzY19zZXRfbWV0YWRhdGFfbGVuKCkKPj4KPj4gU2lnbmVkLW9mZi1i eTogUGV0ZXIgVWpmYWx1c2kgPHBldGVyLnVqZmFsdXNpQHRpLmNvbT4KPj4gLS0tCj4+IEhpLAo+ Pgo+PiBzaW5jZSBhdHRhY2htZW50cyBhcmUgYm91bmNpbmcgYmFjaywgSSBzZW5kIHRoZSBwYXRj aCBzZXBhcmF0ZWx5Cj4+Cj4+IFJlZ2FyZHMsCj4+IFBldGVyCj4+Cj4+ICBpbmNsdWRlL2xpbnV4 L2RtYWVuZ2luZS5oIHwgNTAgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr Cj4+ICAxIGZpbGUgY2hhbmdlZCwgNTAgaW5zZXJ0aW9ucygrKQo+Pgo+PiBkaWZmIC0tZ2l0IGEv aW5jbHVkZS9saW51eC9kbWFlbmdpbmUuaCBiL2luY2x1ZGUvbGludXgvZG1hZW5naW5lLmgKPj4g aW5kZXggNTFmYmI4NjFlODRiLi5hYzQyYWNlMzZhYTMgMTAwNjQ0Cj4+IC0tLSBhL2luY2x1ZGUv bGludXgvZG1hZW5naW5lLmgKPj4gKysrIGIvaW5jbHVkZS9saW51eC9kbWFlbmdpbmUuaAo+PiBA QCAtNDkxLDYgKzQ5MSwxOCBAQCBzdHJ1Y3QgZG1hZW5naW5lX3VubWFwX2RhdGEgewo+PiAgCWRt YV9hZGRyX3QgYWRkclswXTsKPj4gIH07Cj4+ICAKPj4gK3N0cnVjdCBkbWFfYXN5bmNfdHhfZGVz Y3JpcHRvcjsKPj4gKwo+PiArc3RydWN0IGRtYV9kZXNjcmlwdG9yX21ldGFkYXRhX29wcyB7Cj4+ ICsJaW50ICgqYXR0YWNoKShzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyaXB0b3IgKmRlc2MsIHZv aWQgKmRhdGEsCj4+ICsJCSAgICAgIHNpemVfdCBsZW4pOwo+IAo+IEhvdyBkb2VzIG9uZSBkZXRh Y2g/CgpJIGhhdmUgbm90IHRob3VnaHQgYWJvdXQgZGV0YWNoLCBidXQgY2xpZW50cyBjYW4ganVz dCBhdHRhY2ggTlVMTCBJIGd1ZXNzLgoKPiBXaGVuIHNob3VsZCB0aGUgY2xpZW50IGZyZWUgdXAg dGhlIG1lbW9yeSwgSU9XIHdoZW4KPiBkb2VzIGRtYSBkcml2ZXIgZHJvcCByZWYgdG8gZGF0YS4K ClRoZSBtZXRhZGF0YSBpcyBmb3IgdGhlIGRlc2NyaXB0b3Igc28gdGhlIERNQSBkcml2ZXIgbWln aHQgd2FudCB0bwphY2Nlc3MgdG8gaXQgd2hpbGUgdGhlIGRlc2NyaXB0b3IgaXMgdmFsaWQuCgpU eXBpY2FsbHkgY2xpZW50cyBjYW4gZnJlZSB1cCB0aGVpciBtZXRhZGF0YSBzdG9yYWdlIGFmdGVy IHRoZSBkbWEKY29tcGxldGlvbiBjYWxsYmFjay4gT24gREVWX1RPX01FTSB0aGUgbWV0YWRhdGEg aXMgZ29pbmcgdG8gYmUgcGxhY2VkIGluCnRoZSBwcm92aWRlZCBidWZmZXIgd2hlbiB0aGUgdHJh bnNmZXIgaXMgY29tcGxldGVkLgoKPiAKPj4gKwo+PiArCXZvaWQgKigqZ2V0X3B0cikoc3RydWN0 IGRtYV9hc3luY190eF9kZXNjcmlwdG9yICpkZXNjLAo+PiArCQkJIHNpemVfdCAqcGF5bG9hZF9s ZW4sIHNpemVfdCAqbWF4X2xlbik7Cj4gCj4gc28gd2hhdCBpcyB0aGlzIHN1cHBvc2VkIHRvIGRv Li4/CgpNeSBpc3N1ZSB3aXRoIHRoZSBhdHRhY2ggaW4gZ2VuZXJhbCBpcyB0aGF0IGl0IHdpbGwg bmVlZCBhZGRpdGlvbmFsCm1lbWNweSB0byBtb3ZlIHRoZSBtZXRhZGF0YSBmcm9tL3RvIHRoZSBj bGllbnQgYnVmZmVyIHRvIGl0J3MgcGxhY2UuCgpXaXRoIGdldF9wdHIgdGhlIGNsaWVudCBjYW4g Z2V0IHRoZSBwb2ludGVyIHRvIHRoZSBhY3R1YWwgcGxhY2Ugd2hlcmUKdGhlIG1ldGFkYXRhIHJl c2lkZXMgYW5kIG1vZGlmeS9yZWFkIGl0IGluIHBsYWNlIHcvbyBtZW1jcHkuCgpJIGtub3csIEkg a25vdy4uLiBXZSBuZWVkIHRvIHRydXN0IHRoZSBjbGllbnRzLCBidXQgd2l0aCBoaWdoIHRocm91 Z2hwdXQKcGVyaXBoZXJhbHMgdGhlIG1lbWNweSBpcyB0YXhpbmcuCgo+IAo+PiArCWludCAoKnNl dF9sZW4pKHN0cnVjdCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAqZGVzYywKPj4gKwkJICAgICAg IHNpemVfdCBwYXlsb2FkX2xlbik7Cj4gCj4gYXR0YWNoIGFscmVhZHkgaGFzIGxlbmd0aCwgc28g aG93IGRvZXMgdGhpcyBoZWxwPwoKU28sIERNQSBkcml2ZXJzIGNhbiBpbXBsZW1lbnQgZWl0aGVy IG9yIGJvdGg6CjEuIGF0dGFjaCgpCjIuIGdldF9wdHIoKSAvIHNldF9sZW4oKQoKQ2xpZW50cyBt dXN0IG5vdCBtaXggdGhlIHR3byB3YXkgb2YgaGFuZGxpbmcgdGhlIG1ldGFkYXRhLgpUaGUgc2V0 X2xlbigpIGlzIGludGVuZGVkIHRvIHRlbGwgdGhlIERNQSBkcml2ZXIgdGhlIGNsaWVudCBwcm92 aWRlZAptZXRhZGF0YSBzaXplIChpbiBNRU1fVE9fREVWIGNhc2UgbW9zdGx5KS4KCk1FTV9UT19E RVYgZmxvdyBvbiBjbGllbnQgc2lkZToKZ2V0X3B0cigpCmZpbGwgaW4gdGhlIG1ldGFkYXRhIHRv IHRoZSBwb2ludGVyIChub3QgZXhjZWVkaW5nIG1heF9sZW4pCnNldF9sZW4oKSB0byB0ZWxsIHRo ZSBETUEgZHJpdmVyIHRoZSBhbW91bnQgb2YgdmFsaWQgYnl0ZXMgd3JpdHRlbgoKREVWX1RPX01F TSBmbG93IG9uIGNsaWVudCBzaWRlOgpJbiB0aGUgY29tcGxldGlvbiBjYWxsYmFjaywgZ2V0X3B0 cigpCnRoZSBtZXRhZGF0YSBpcyBwYXlsb2FkX2xlbiBieXRlcyBhbmQgY2FuIGJlIGFjY2Vzc2Vk IGluIHRoZSByZXR1cm4gcG9pbnRlci4KCgpCVFc6IFRoZSBkcml2ZXIgd2hpY2ggaXMgZ29pbmcg dG8gbmVlZCB0aGlzIGlzIG5vdyBhY2Nlc3NpYmxlIGluIHB1YmxpYzoKaHR0cHM6Ly9naXQudGku Y29tL3RpLWxpbnV4LWtlcm5lbC90aS1saW51eC1rZXJuZWwvdHJlZXMvdGktbGludXgtNC4xNC55 L2RyaXZlcnMvZG1hL3RpCgpvciBpbiBteSB3aXAgdHJlZToKaHR0cHM6Ly9naXRodWIuY29tL29t YXAtYXVkaW8vbGludXgtYXVkaW8vdHJlZS9wZXRlci90aS1saW51eC00LjE0Lnkvd2lwL2RyaXZl cnMvZG1hL3RpCgpwcmVmaXhlZCB3aXRoIGszLSoKCj4gCj4+ICt9Owo+PiArCj4+ICAvKioKPj4g ICAqIHN0cnVjdCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAtIGFzeW5jIHRyYW5zYWN0aW9uIGRl c2NyaXB0b3IKPj4gICAqIC0tLWRtYSBnZW5lcmljIG9mZmxvYWQgZmllbGRzLS0tCj4+IEBAIC01 MjAsNiArNTMyLDcgQEAgc3RydWN0IGRtYV9hc3luY190eF9kZXNjcmlwdG9yIHsKPj4gIAlkbWFf YXN5bmNfdHhfY2FsbGJhY2tfcmVzdWx0IGNhbGxiYWNrX3Jlc3VsdDsKPj4gIAl2b2lkICpjYWxs YmFja19wYXJhbTsKPj4gIAlzdHJ1Y3QgZG1hZW5naW5lX3VubWFwX2RhdGEgKnVubWFwOwo+PiAr CXN0cnVjdCBkbWFfZGVzY3JpcHRvcl9tZXRhZGF0YV9vcHMgKm1ldGFkYXRhX29wczsKPj4gICNp ZmRlZiBDT05GSUdfQVNZTkNfVFhfRU5BQkxFX0NIQU5ORUxfU1dJVENICj4+ICAJc3RydWN0IGRt YV9hc3luY190eF9kZXNjcmlwdG9yICpuZXh0Owo+PiAgCXN0cnVjdCBkbWFfYXN5bmNfdHhfZGVz Y3JpcHRvciAqcGFyZW50Owo+PiBAQCAtOTMyLDYgKzk0NSw0MyBAQCBzdGF0aWMgaW5saW5lIHN0 cnVjdCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAqZG1hZW5naW5lX3ByZXBfZG1hX21lbWNweSgK Pj4gIAkJCQkJCSAgICBsZW4sIGZsYWdzKTsKPj4gIH0KPj4gIAo+PiArc3RhdGljIGlubGluZSBp bnQgZG1hZW5naW5lX2Rlc2NfYXR0YWNoX21ldGFkYXRhKAo+PiArCQlzdHJ1Y3QgZG1hX2FzeW5j X3R4X2Rlc2NyaXB0b3IgKmRlc2MsIHZvaWQgKmRhdGEsIHNpemVfdCBsZW4pCj4+ICt7Cj4+ICsJ aWYgKCFkZXNjKQo+PiArCQlyZXR1cm4gMDsKPj4gKwo+PiArCWlmICghZGVzYy0+bWV0YWRhdGFf b3BzIHx8ICFkZXNjLT5tZXRhZGF0YV9vcHMtPmF0dGFjaCkKPj4gKwkJcmV0dXJuIC1FTk9UU1VQ UDsKPj4gKwo+PiArCXJldHVybiBkZXNjLT5tZXRhZGF0YV9vcHMtPmF0dGFjaChkZXNjLCBkYXRh LCBsZW4pOwo+PiArfQo+PiArCj4+ICtzdGF0aWMgaW5saW5lIHZvaWQgKmRtYWVuZ2luZV9kZXNj X2dldF9tZXRhZGF0YV9wdHIoCj4+ICsJCXN0cnVjdCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAq ZGVzYywgc2l6ZV90ICpwYXlsb2FkX2xlbiwKPj4gKwkJc2l6ZV90ICptYXhfbGVuKQo+PiArewo+ PiArCWlmICghZGVzYykKPj4gKwkJcmV0dXJuIE5VTEw7Cj4+ICsKPj4gKwlpZiAoIWRlc2MtPm1l dGFkYXRhX29wcyB8fCAhZGVzYy0+bWV0YWRhdGFfb3BzLT5nZXRfcHRyKQo+PiArCQlyZXR1cm4g RVJSX1BUUigtRU5PVFNVUFApOwo+PiArCj4+ICsJcmV0dXJuIGRlc2MtPm1ldGFkYXRhX29wcy0+ Z2V0X3B0cihkZXNjLCBwYXlsb2FkX2xlbiwgbWF4X2xlbik7Cj4+ICt9Cj4+ICsKPj4gK3N0YXRp YyBpbmxpbmUgaW50IGRtYWVuZ2luZV9kZXNjX3NldF9tZXRhZGF0YV9sZW4oCj4+ICsJCXN0cnVj dCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAqZGVzYywgc2l6ZV90IHBheWxvYWRfbGVuKQo+PiAr ewo+PiArCWlmICghZGVzYykKPj4gKwkJcmV0dXJuIDA7Cj4+ICsKPj4gKwlpZiAoIWRlc2MtPm1l dGFkYXRhX29wcyB8fCAhZGVzYy0+bWV0YWRhdGFfb3BzLT5zZXRfbGVuKQo+PiArCQlyZXR1cm4g LUVOT1RTVVBQOwo+PiArCj4+ICsJcmV0dXJuIGRlc2MtPm1ldGFkYXRhX29wcy0+c2V0X2xlbihk ZXNjLCBwYXlsb2FkX2xlbik7Cj4+ICt9Cj4+ICsKPj4gIC8qKgo+PiAgICogZG1hZW5naW5lX3Rl cm1pbmF0ZV9hbGwoKSAtIFRlcm1pbmF0ZSBhbGwgYWN0aXZlIERNQSB0cmFuc2ZlcnMKPj4gICAq IEBjaGFuOiBUaGUgY2hhbm5lbCBmb3Igd2hpY2ggdG8gdGVybWluYXRlIHRoZSB0cmFuc2ZlcnMK Pj4gLS0gCj4+IFBldGVyCj4+Cj4+IFRleGFzIEluc3RydW1lbnRzIEZpbmxhbmQgT3ksIFBvcmtr YWxhbmthdHUgMjIsIDAwMTgwIEhlbHNpbmtpLgo+PiBZLXR1bm51cy9CdXNpbmVzcyBJRDogMDYx NTUyMS00LiBLb3RpcGFpa2thL0RvbWljaWxlOiBIZWxzaW5raQo+Pgo+PiAtLQo+PiBUbyB1bnN1 YnNjcmliZSBmcm9tIHRoaXMgbGlzdDogc2VuZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgZG1hZW5n aW5lIiBpbgo+PiB0aGUgYm9keSBvZiBhIG1lc3NhZ2UgdG8gbWFqb3Jkb21vQHZnZXIua2VybmVs Lm9yZwo+PiBNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwub3JnL21h am9yZG9tby1pbmZvLmh0bWwKPiAKCi0gUMOpdGVyCgpUZXhhcyBJbnN0cnVtZW50cyBGaW5sYW5k IE95LCBQb3Jra2FsYW5rYXR1IDIyLCAwMDE4MCBIZWxzaW5raS4KWS10dW5udXMvQnVzaW5lc3Mg SUQ6IDA2MTU1MjEtNC4gS290aXBhaWtrYS9Eb21pY2lsZTogSGVsc2lua2kKLS0tClRvIHVuc3Vi c2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRoZSBsaW5lICJ1bnN1YnNjcmliZSBkbWFlbmdp bmUiIGluCnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBtYWpvcmRvbW9Admdlci5rZXJuZWwub3Jn Ck1vcmUgbWFqb3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92Z2VyLmtlcm5lbC5vcmcvbWFqb3Jkb21v LWluZm8uaHRtbAo=