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: [v2,2/3] dmaengine: imx-sdma: add memcpy interface From: Sascha Hauer Message-Id: <20180806085303.rn63s2kdeovlth2j@pengutronix.de> Date: Mon, 6 Aug 2018 10:53:03 +0200 To: Robin Gong Cc: "linux@armlinux.org.uk" , "linux-kernel@vger.kernel.org" , "dmaengine@vger.kernel.org" , "vkoul@kernel.org" , dl-linux-imx , "kernel@pengutronix.de" , Fabio Estevam , "dan.j.williams@intel.com" , "shawnguo@kernel.org" , "linux-arm-kernel@lists.infradead.org" List-ID: T24gRnJpLCBKdWwgMjAsIDIwMTggYXQgMDk6NDA6NTFBTSArMDAwMCwgUm9iaW4gR29uZyB3cm90 ZToKPiA+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tCj4gPiBGcm9tOiBTYXNjaGEgSGF1ZXIg W21haWx0bzpzLmhhdWVyQHBlbmd1dHJvbml4LmRlXQo+ID4gU2VudDogMjAxOOW5tDfmnIgxM+aX pSAxNDoxNgo+ID4gVG86IFJvYmluIEdvbmcgPHlpYmluLmdvbmdAbnhwLmNvbT4KPiA+IENjOiB2 a291bEBrZXJuZWwub3JnOyBkYW4uai53aWxsaWFtc0BpbnRlbC5jb207IHNoYXduZ3VvQGtlcm5l bC5vcmc7IEZhYmlvCj4gPiBFc3RldmFtIDxmYWJpby5lc3RldmFtQG54cC5jb20+OyBsaW51eEBh cm1saW51eC5vcmcudWs7Cj4gPiBsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmc7 IGtlcm5lbEBwZW5ndXRyb25peC5kZTsKPiA+IGRtYWVuZ2luZUB2Z2VyLmtlcm5lbC5vcmc7IGxp bnV4LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmc7IGRsLWxpbnV4LWlteAo+ID4gPGxpbnV4LWlteEBu eHAuY29tPgo+ID4gU3ViamVjdDogUmU6IFtQQVRDSCB2MiAyLzNdIGRtYWVuZ2luZTogaW14LXNk bWE6IGFkZCBtZW1jcHkgaW50ZXJmYWNlCj4gPiAKPiA+IE9uIEZyaSwgSnVsIDEzLCAyMDE4IGF0 IDA5OjA4OjQ2UE0gKzA4MDAsIFJvYmluIEdvbmcgd3JvdGU6Cj4gPiA+IEFkZCBNRU1DUFkgY2Fw YWJpbGl0eSBmb3IgaW14LXNkbWEgZHJpdmVyLgo+ID4gPgo+ID4gPiBTaWduZWQtb2ZmLWJ5OiBS b2JpbiBHb25nIDx5aWJpbi5nb25nQG54cC5jb20+Cj4gPiA+IC0tLQo+ID4gPiAgZHJpdmVycy9k bWEvaW14LXNkbWEuYyB8IDk1Cj4gPiA+ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKy0tCj4gPiA+ICAxIGZpbGUgY2hhbmdlZCwgOTIgaW5zZXJ0aW9ucygr KSwgMyBkZWxldGlvbnMoLSkKPiA+ID4KPiA+ID4gQEAgLTEzMTgsNiArMTM0Nyw2MyBAQCBzdGF0 aWMgc3RydWN0IHNkbWFfZGVzYwo+ID4gKnNkbWFfdHJhbnNmZXJfaW5pdChzdHJ1Y3Qgc2RtYV9j aGFubmVsICpzZG1hYywKPiA+ID4gIAlyZXR1cm4gTlVMTDsKPiA+ID4gIH0KPiA+ID4KPiA+ID4g K3N0YXRpYyBzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyaXB0b3IgKnNkbWFfcHJlcF9tZW1jcHko Cj4gPiA+ICsJCXN0cnVjdCBkbWFfY2hhbiAqY2hhbiwgZG1hX2FkZHJfdCBkbWFfZHN0LAo+ID4g PiArCQlkbWFfYWRkcl90IGRtYV9zcmMsIHNpemVfdCBsZW4sIHVuc2lnbmVkIGxvbmcgZmxhZ3Mp IHsKPiA+ID4gKwlzdHJ1Y3Qgc2RtYV9jaGFubmVsICpzZG1hYyA9IHRvX3NkbWFfY2hhbihjaGFu KTsKPiA+ID4gKwlzdHJ1Y3Qgc2RtYV9lbmdpbmUgKnNkbWEgPSBzZG1hYy0+c2RtYTsKPiA+ID4g KwlpbnQgY2hhbm5lbCA9IHNkbWFjLT5jaGFubmVsOwo+ID4gPiArCXNpemVfdCBjb3VudDsKPiA+ ID4gKwlpbnQgaSA9IDAsIHBhcmFtOwo+ID4gPiArCXN0cnVjdCBzZG1hX2J1ZmZlcl9kZXNjcmlw dG9yICpiZDsKPiA+ID4gKwlzdHJ1Y3Qgc2RtYV9kZXNjICpkZXNjOwo+ID4gPiArCj4gPiA+ICsJ aWYgKCFjaGFuIHx8ICFsZW4pCj4gPiA+ICsJCXJldHVybiBOVUxMOwo+ID4gPiArCj4gPiA+ICsJ ZGV2X2RiZyhzZG1hLT5kZXYsICJtZW1jcHk6ICVwYWQtPiVwYWQsIGxlbj0lenUsIGNoYW5uZWw9 JWQuXG4iLAo+ID4gPiArCQkmZG1hX3NyYywgJmRtYV9kc3QsIGxlbiwgY2hhbm5lbCk7Cj4gPiA+ ICsKPiA+ID4gKwlkZXNjID0gc2RtYV90cmFuc2Zlcl9pbml0KHNkbWFjLCBETUFfTUVNX1RPX01F TSwKPiA+ID4gKwkJCQkJbGVuIC8gU0RNQV9CRF9NQVhfQ05UICsgMSk7Cj4gPiA+ICsJaWYgKCFk ZXNjKQo+ID4gPiArCQlyZXR1cm4gTlVMTDsKPiA+ID4gKwo+ID4gPiArCWRvIHsKPiA+ID4gKwkJ Y291bnQgPSBtaW5fdChzaXplX3QsIGxlbiwgU0RNQV9CRF9NQVhfQ05UKTsKPiA+ID4gKwkJYmQg PSAmZGVzYy0+YmRbaV07Cj4gPiA+ICsJCWJkLT5idWZmZXJfYWRkciA9IGRtYV9zcmM7Cj4gPiA+ ICsJCWJkLT5leHRfYnVmZmVyX2FkZHIgPSBkbWFfZHN0Owo+ID4gPiArCQliZC0+bW9kZS5jb3Vu dCA9IGNvdW50Owo+ID4gPiArCQlkZXNjLT5jaG5fY291bnQgKz0gY291bnQ7Cj4gPiA+ICsJCS8q IGFsaWduIHdpdGggc2RtYS0+ZG1hX2RldmljZS5jb3B5X2FsaWduOiA0Ynl0ZXMgKi8KPiA+ID4g KwkJYmQtPm1vZGUuY29tbWFuZCA9IDA7Cj4gPiA+ICsKPiA+ID4gKwkJZG1hX3NyYyArPSBjb3Vu dDsKPiA+ID4gKwkJZG1hX2RzdCArPSBjb3VudDsKPiA+ID4gKwkJbGVuIC09IGNvdW50Owo+ID4g PiArCQlpKys7Cj4gPiAKPiA+IE5BQ0suCj4gPiAKPiA+IFBsZWFzZSBhY3R1YWxseSBsb29rIGF0 IHlvdXIgY29kZSBhbmQgZmluZCBvdXQgd2hlcmUgeW91IGRvIHVuYWxpZ25lZCBETUEKPiA+IGFj Y2Vzc2VzLiBIaW50OiBXaGF0IGhhcHBlbnMgd2hlbiB0aGlzIGxvb3AgYm9keSBpcyBleGVjdXRl ZCBtb3JlIHRoYW4KPiA+IG9uY2U/Cj4gPiAKPiA+IFNhc2NoYQo+IEFjdHVhbGx5IGludGVybmFs IHNkbWEgc2NyaXB0IGhhcyBhbHJlYWR5IHRha2Ugc3VjaCAnYWxpZ24nIG1hdHRlciBsaWtlIGJl bG93Ogo+IEJ1cnN0IHdpdGggd29yZHMgaWYgc291cmNlL2Rlc3QgYWRkcmVzcyBhbmQgZGF0YSBs ZW5ndGggYXJlIGFsbCBhbGlnbmVkIHdpdGggd29yZHMsIGJ1cnN0IHdpdGgKPiBCeXRlIGlmIG5v dC4KCklmIHRoYXQncyB0aGUgY2FzZSB3aHkgZGlkIHlvdSBhZGQgdGhlIERNQUVOR0lORV9BTElH Tl80X0JZVEVTIGZsYWcgaW4gdGhlCmZpcnN0IHBsYWNlPwoKQWxzbywgaWYgdGhlIFNETUEgc2Ny aXB0IGZhbGxzIGJhY2sgdG8gYnl0ZSBjb3B5IHdoZW4gbmVjZXNzYXJ5LCBkb2luZwpzbyBwcm9i YWJseSBoYXMgcGVyZm9ybWFuY2UgaW1wYWN0cywgc28gSSB3b25kZXIgd2h5IHlvdSBkb24ndCBq dXN0IGN1dAonY291bnQnIHRvIHNvbWV0aGluZyB0aGF0IGlzIGZvdXIgYnl0ZSBhbGlnbmVkLgoK U2FzY2hhCg==