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,5/5] dmaengine: ti: k3-udma: Add glue layer for non DMAengine users From: Peter Ujfalusi Message-Id: Date: Wed, 10 Oct 2018 14:25:41 +0300 To: Vinod Cc: dan.j.williams@intel.com, dmaengine@vger.kernel.org, grygorii.strashko@ti.com List-ID: T24gMjAxOC0xMC0xMCAxMzowOSwgVmlub2Qgd3JvdGU6Cj4gT24gMTAtMTAtMTgsIDEyOjQ0LCBQ ZXRlciBVamZhbHVzaSB3cm90ZToKPj4KPj4KPj4gT24gMjAxOC0xMC0xMCAwNzowNSwgVmlub2Qg d3JvdGU6Cj4+PiBPbiAyNC0wOS0xOCwgMTY6MDAsIFBldGVyIFVqZmFsdXNpIHdyb3RlOgo+Pj4+ IEZyb206IEdyeWdvcmlpIFN0cmFzaGtvIDxncnlnb3JpaS5zdHJhc2hrb0B0aS5jb20+Cj4+Pj4K Pj4+PiBDZXJ0YWluIHVzZXJzIGNhbiBub3QgdXNlIHJpZ2h0IG5vdyB0aGUgRE1BZW5naW5lIEFQ SSBkdWUgdG8gbWlzc2luZwo+Pj4+IGZlYXR1cmVzIGluIHRoZSBjb3JlLiBQcmltZSBleGFtcGxl IGlzIE5ldHdvcmtpbmcuCj4+Pgo+Pj4gV2hhdCBhcmUgdGhlIGZlYXR1cmVzIHlvdSBoYXZlIGlu IG1pbmQ/Cj4+Cj4+IFRoZSB0d28gYmlnIG9uZXMgYXJlOgo+PiAxLiBTdXBwb3J0IGZvciBvdXQg b2Ygb3JkZXIgY29tcGxldGlvbiBvZiBkZXNjcmlwdG9ycyAoY29va2llIG1hbmFnZW1lbnQpCj4+ Cj4+IFRoaXMgbW9zdGx5IGNvbmNlcm5zIHRoZSBERVZfVE9fTUVNLgo+PiBDdXJyZW50bHkgd2Ug aGF2ZSBkbWFfY29va2llX3QgKHMzMikgdG8gdHJhY2sgd2hpY2ggZGVzY3JpcHRvciBpcwo+PiBj b21wbGV0ZWQsIHdoaWNoIG9uZSBpcyBpc3N1ZWQgYW5kIHdoaWNoIG9uZSBpcyBwZW5kaW5nLgo+ PiBJdCBpcyBtYW5kYXRvcnkgdGhhdCBkZXNjcmlwdG9ycyBhcmUgY29tcGxldGVkIGluIHRoZSBz YW1lIG9yZGVyIGFzIHRoZXkKPj4gd2VyZSBpc3N1ZWQuCj4+Cj4+IFdlIG5lZWQgdG8gaGF2ZSBz dXBwb3J0IGZvciBvdXQgb2Ygb3JkZXIgY29tcGxldGlvbiBvZiB0aGUgaXNzdWVkCj4+IGRlc2Ny aXB0b3JzIGFuZCB0aHVzIHRoZSBzMzIgd2F5IG9mIHRyYWNraW5nIGlzIG5vdCB3b3JraW5nLgo+ Pgo+PiBXZSBiYXNpY2FsbHkgaGF2ZSB0aHJlZSB1c2UgY2FzZXMgbmVlZGVkIHRvIGJlIHN1cHBv cnRlZDoKPj4gMWE6IGluIG9yZGVyIGNvbXBsZXRpb24gKGN1cnJlbnRseSBzdXBwb3J0ZWQgYnkg RE1BZW5naW5lKQo+PiAxYjogb3V0IG9mIG9yZGVyIGNvbXBsZXRpb24gaW4gYSBjaGFubmVsLCBk ZXNjcmlwdG9ycyBjYW4gY29tcGxldGUgaW4KPj4gZGlmZmVyZW50IG9yZGVyLgo+PiAxYzogb3V0 IG9mIG9yZGVyIGNvbXBsZXRpb24gaW4gYSBjaGFubmVsLCB0aGUgY29tcGxldGlvbiBpcyBvcmRl cmVkCj4+IHdpdGhpbiAnY2xhc3NpZmljYXRpb24gdHlwZScgb2YgZGVzY3JpcHRvcnMgdmlhIHRo ZSBjaGFubmVsCj4+Cj4+IElmIHdlIGlzc3VlIGRlc2NyaXB0b3JzIDEsIDIsIDMsIDQsIDUsIDYs IDcKPj4KPj4gV2UgY291bGQgcmVjZWl2ZSBiYWNrIHRoZW0KPj4gMWE6IDEsIDIsIDMsIDQsIDUs IDYsIDcKPj4gMWI6IDQsIDcsIDIsIDEsIDMsIDUsIDYKPj4KPj4gaW4gY2FzZSBvZiAxYyB3ZSBj YW4gY2xhc3NpZnkgZGVzY3JpcHRvcnMgd2hlbiBpc3N1aW5nOgo+PiAxKGMwKSwgMihjMCksIDMo YzApLCA0KGMxKSwgNShjMSksIDYoYzEpLCA3KGMxKQo+Pgo+PiBhbmQgd2UgcmVjZWl2ZSB0aGUg YmFjayBsaWtlOgo+PiA0KGMxKSwgNShjMSksIDEoYzApLCAyKGMwKSwgNihjMSksIDMoYzApLCA3 KGMxKQo+Pgo+PiBUaGUgZGVzY3JpcHRvcnMgYXJlIGNvbWluZyBiYWNrIGluICdyYW5kb20nIG9y ZGVyLCBob3dldmVyIHRoZXkgYXJlIGluCj4+IG9yZGVyIHdpdGhpbiB0aGVpciBjbGFzc2lmaWNh dGlvbi4KPiAKPiB3aGVuIHlvdSBzYXkgY2xhc3NpZmljYXRpb24geW91IG1lYW4gYWN0dWFsIEhX IGNoYW5uZWxzIHJpZ2h0LCBzbyB0bwo+IHN1cHBvcnQgdGhhdCB3aHkgc2hvdWxkIHRoZSBjb29r aWUgYmUgcHJvdmlkZWQgZnJvbSB0aGUgY2hhbm5lbCB3aGVyZQo+IHlvdSBzY2hlZHVsZSB0aGUg ZGVzY3JpcHRvciBmb3I/CgpObywgaXQgaXMgbm90IGFjdHVhbCBIVyBjaGFubmVsLgoKVGhlcmUg aXMgYSBjb25jZXB0IG9mIGZsb3dJRCBpbiBDUFBJNSAoYXMgd2VsbCBpbiBDUFBJNCkuIEVhY2gg Zmxvd0lEIGlzCmFkZHJlc3NpbmcgKHRyaWdnZXJpbmcpIHRoZSBjb3JyZXNwb25kaW5nIHJlY2Vp dmUgZmxvdyAocmZsb3cpCmNvbmZpZ3VyYXRpb24uIEZsb3dJRCA9PSAweDNmZmYgd291bGQgdXNl IHRoZSBkZWZhdWx0IGZsb3cgZm9yIHRoZQpjaGFubmVsLCB3aGljaCBoYXMgdGhlIHNhbWUgSUQg YXMgdGhlIHJjaGFuCgpTbywKV2UgaGF2ZSBhIHJlY2VpdmUgY2hhbm5lbCAocmNoYW4xMCkuCldl IGhhdmUgdGhlIGRlZmF1bHQgcmZsb3cxMCBmb3IgaXQKV2UgaGF2ZSBleHRyYSBGbG93SUQgcmFu Z2UgcmVzZXJ2ZWQgZm9yIHRoZSBjaGFubmVsIChyZmxvdzE4MC0xODgpCgpUaGUgcmZsb3cgY29u ZmlndXJhdGlvbiBkZXNjcmliZXMgd2hhdCB0byBkbyB3aGVuIGEgcGFja2V0IHdpdGggdGhlCm1h dGNoaW5nIEZsb3dJRCBoYXMgYmVlbiByZWNlaXZlZDoKLSBmcm9tIHdoaWNoIHJpbmcgdGhlIGZy ZWUgZGVzY3JpcHRvciBzaG91bGQgYmUgdXNlZCAoZmRxIC0gZnJlZQpkZXNjcmlwdG9yIHF1ZXVl KQotIHRvIHdoaWNoIHJpbmcgdGhlIHBhY2tldCBzaG91bGQgYmUgcHV0IHdoZW4gdGhlIHBhY2tl dCBpcyBjb21wbGV0ZWQKKHJxIC0gcmVjZWl2ZSBxdWV1ZSkKLSBpdCBoYXMgbW9yZSBmaW5lIGdy YWluZWQgY29udHJvbCwgYnV0IGxldCdzIG5vdCB3b3JyeSBhYm91dCB0aGVtIG5vdy4KCkluIGNh c2Ugb2YgMWMgZWFjaCByZmxvdyBoYXZlIHVuaXF1ZSBwYWlyIG9mIGZkcSBhbmQgcnEuIFdlIGNh biBjbGFzc2lmeQphIHBhY2tldCB0byBnbyB0byBmZHFBLCB3aGljaCBpcyB1c2VkIGJ5IHJmbG93 QSBhbmQgaXQgaXMgZ29pbmcgdG8KcmV0dXJuIHRoZSBwYWNrZXQgdG8gcnFBLgoKQnV0IGl0IGNv dWxkIGJlIHRoYXQgYWxsIHJmbG93cyBhcmUgcG9pbnRpbmcgdG8gb25lIHJxLiBTbyBwYWNrZXRz IGZyb20KZmRxQS9CL0MvLi4gZm9yIHJmbG93QS9CL0MvLi4uIGFyZSBhbGwgZ29pbmcgdG8gYmUg cHVzaGVkIHRvIG9uZSBycS4KClRoZSAxYiBjYXNlIGlzIHdoZW4gYWxsIHJmbG93IGhhcyBiZWVu IGNvbmZpZ3VyZWQgdG8gdXNlIGEgc2luZ2xlIGZkcSwKYnV0IHB1c2ggdGhlIGNvbXBsZXRlZCBw YWNrZXRzIHRvIGRpZmZlcmVudCBycS4gSW4gdGhpcyBtb2RlIGl0IGlzIGVhc3kKdG8gc3VwcG9y dCBwYWNrZXQgcHJpb3JpdHkgZm9yIGV4YW1wbGU6IFRoZSBldGggaGFyZHdhcmUgd2lsbCBwdXNo IGhpZ2gKcHJpb3JpdHkgcGFja2V0cyB3aXRoIGxvd2VyIEZsb3dJRCBhbmQgdGhlIFNXIGlzIGZp cnN0IGVtcHRpZXMgdGhlIHJxCndoaWNoIGlzIGFzc29jaWF0ZWQgd2l0aCB0aGUgbG93ZXIgaW5k ZXhlZCByZmxvdyBjb25maWd1cmF0aW9uLgoKSSB3YXMgdGhpbmtpbmcgb2YgcmVwcmVzZW50aW5n IHRoZSByZmxvd3MgYXMgJ2NoYW5uZWxzJyBidXQgdGhlbiB0aGVyZQp3aWxsIHBhY2tldHMgY29t aW5nIG91dCBmcm9tIGNoYW5uZWxzIHdoZXJlIHdlIGhhdmUgbm90IGV2ZW4gcGxhY2VkIGFuClJY IC0gd2UgcHVzaCBSWCB0byBvbmUgJ2NoYW5uZWwnIGJ1dCBpdCBpcyBjb21pbmcgYmFjayBvbiBh bm90aGVyIGluCnJhbmRvbSBvcmRlci4KCj4gCj4+IFRoZSBtdXN0IHN1cHBvcnRlZCBvbmUgaXMg MWIgYXQgdGhlIG1vbWVudCwgMWMgc2hvdWxkIGJlIHJlYXNvbmFibHkKPj4gc2ltcGxlIHRvIGFk ZCBzdXBwb3J0IGZvci4KPiAKPiBzbyB5b3UgYXJlIGFkZGluZyAxYiBpbiB0aGlzIHBhdGNoPwoK V2VsbCwgaW4gYSB3YXkgeWVzLiBUaGlzIHBhdGNoIG1ha2VzIGl0IHBvc3NpYmxlIHRvIHVzZSAx YiBpbgpuZXR3b3JraW5nLCBidXQgdy9vIHVzaW5nIGFueSBETUFlbmdpbmUgQVBJLiBJIHdhbnQg dG8gYXZvaWQgbWl4ZWQgdXNlCihhYnVzZSkgb2YgRE1BZW5naW5lIGFuZCBjdXN0b20gQVBJLgoK PiAKPj4KPj4gMi4gTkFQSSBzdXBwb3J0Cj4+Cj4+IFZpYSBOQVBJIGFuIFJYIGxvb2tzIHNvbWV0 aGluZyBsaWtlIHRoaXM6Cj4+IC0gZ2l2ZSB0aGUgaGFyZHdhcmUgYnVuY2ggb2YgZGVzY3JpcHRv cnMgdG8gcmVjZWl2ZSBwYWNrZXRzCj4+IC0gd2hlbiB0aGUgZmlyc3QgcGFja2V0IGlzIHJlY2Vp dmVkIGdldCBub3RpZmljYXRpb24KPj4gIC0gZGlzYWJsZSB0aGUgaW50ZXJydXB0cwo+PiAgLSBz Y2hlZHVsZSBOQVBJCj4+IC0gaW4gdGhlIE5BUEkgcG9sbCBmdW5jdGlvbiByZWFkIG91dCB0aGUg Y29tcGxldGVkIGRlc2NyaXB0b3JzIG9uZSBieQo+PiBvbmUsIHByb2Nlc3MgdGhlbSwgdGhlbiBn aXZlIGJhY2sgdGhlIGRlc2NyaXB0b3IgKHdpdGggbmV3IGJ1ZmZlcikgdG8KPj4gdGhlIGhhcmR3 YXJlLgo+PiAtIGFmdGVyIHBvbGwgZmluaXNoZWQgKG5vIG1vcmUgcGFja2V0cyBvciBnb3QgdGhl IG51bWJlciBvZiBwYWNrZXRzIE5BUEkKPj4gdG9sZCB1cyB0byByZWFkIG91dCkgZW5hYmxlIHRo ZSBpbnRlcnJ1cHRzIGFuZCB3YWl0IGZvciBwYWNrZXRzIHRvIHN0YXJ0Cj4+IHRvIGZsb3cgaW4u Cj4gCj4gQ2FuIHRoYXQgbm90IGJlIGRvbmUgYnkgdXNpbmcgdGhlIGludGVycnVwdC9hY2sgZmxh Z3M/CgpJIGRvbid0IHRoaW5rIHNvLgpCeSBkZWZpbml0aW9uIHRoZSBjYWxsYmFjayBpcyBjYWxs ZWQgdG8gbm90aWZ5IHRoZSBjbGllbnQgdGhhdCB0aGUKdHJhbnNhY3Rpb24gaXMgY29tcGxldGVk ICh0aGUgZ2l2ZW4gZGVzY3JpcHRvcikuIEFmdGVyIHRoaXMgdGhlCkRNQWVuZ2luZSBjb25zaWRl cnMgdGhlIGNvb2tpZSB0byBiZSBjb21wbGV0ZWQsIHJpZ2h0PwoKSW4gTkFQSSBob3dldmVyIHRo ZSBjbGllbnQgaXMgbm90aWZpZWQgdGhhdCB0aGVyZSBpcyBzb21ldGhpbmcgcGVuZGluZwpmb3Ig cmVjZXB0aW9uICh2aWEgaXJxKSwgdGhlIGNsaWVudCB0aGVuIGRpc2FibGUgdGhlIGludGVycnVw dC4gbmV0IGNvcmUKd2lsbCBpbml0aWF0ZSB0aGUgcG9sbGluZyBhbmQgdGhlIHBhY2tldHMgYXJl IHRha2VuIG91dCBmcm9tIHRoZSBIVy4KCkl0IGlzIG5vdCBwb3NzaWJsZSB0byBpc3N1ZSB0aGUg Zmlyc3QgcGFja2V0IHcvIERNQV9QUkVQX0lOVEVSUlVQVCB0aGUKb3RoZXJzIHdpdGggdy9vIGl0 IGZvciBleGFtcGxlIGFzIHdlIGRvbid0IGtub3cgaG93IG1hbnkgcGFja2V0cyBhcmUKZ29pbmcg dG8gY29tZSBhbmQgd2UgYXJlIG5vdCBldmVuIHN1cmUgaWYgdGhlIGZpcnN0IGlzc3VlZCBwYWNr ZXQgaXMKZ29pbmcgdG8gYmUgdGhlIGZpcnN0IHRvIGNvbWUgYmFjay4KCkl0IGlzIG1vcmUgbGlr ZSBhIG5ldyBkbWFfdHJhbnNhY3Rpb25fdHlwZSB0aGFuIHBlciBkZXNjcmlwdG9yIGZsYWcuIFRo ZQpjaGFubmVsIG11c3Qga25vdyB0aGF0IGl0IGlzIGluIHRoaXMgbW9kZSBzbyB3aGVuIGl0IGdl dCB0aGUgaW50ZXJydXB0CnRoYXQgdGhlcmUgaXMgc29tZXRoaW5nIHBlbmRpbmcgZm9yIHJlY2Vw dGlvbiwgaXQgd291bGQganVzdCBkaXNhYmxlIHRoZQppbnRlcnJ1cHQgYW5kIHRlbGwgdGhlIGNs aWVudCB0aGlzLiBUaGVuIHdlIG5lZWQgdG8gc29tZWhvdyBiZSBhYmxlIHRvCnBvbGwgcmVhZCB0 aGUgcGFja2V0cyBvdXQuIEVpdGhlciBvbmUtYnktb25lIHJlYWQgb3IgYSBsb29waW5nIHdpdGhp bgpETUFlbmdpbmUvRE1BIGRyaXZlciBhbmQgY2FsbGluZyBhIGNsaWVudCBwcm92aWRlZCBjYWxs YmFjayBmb3IgZWFjaCBwYWNrZXQuCgotIFDDqXRlcgoKVGV4YXMgSW5zdHJ1bWVudHMgRmlubGFu ZCBPeSwgUG9ya2thbGFua2F0dSAyMiwgMDAxODAgSGVsc2lua2kuClktdHVubnVzL0J1c2luZXNz IElEOiAwNjE1NTIxLTQuIEtvdGlwYWlra2EvRG9taWNpbGU6IEhlbHNpbmtpCg==