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: [v3,1/5] dmaengine: xilinx_dma: in axidma slave_sg and dma_cylic mode align split descriptors From: Vinod Koul Message-Id: <20180629072552.GY22377@vkoul-mobl> Date: Fri, 29 Jun 2018 12:55:52 +0530 To: Andrea Merello Cc: dan.j.williams@intel.com, michal.simek@xilinx.com, appana.durga.rao@xilinx.com, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Radhey Shyam Pandey List-ID: T24gMjUtMDYtMTgsIDExOjI3LCBBbmRyZWEgTWVyZWxsbyB3cm90ZToKPiBXaGVuZXZlciBhIHNp bmdsZSBvciBjeWNsaWMgdHJhbnNhY3Rpb24gaXMgcHJlcGFyZWQsIHRoZSBkcml2ZXIKPiBjb3Vs ZCBldmVudHVhbGx5IHNwbGl0IGl0IG92ZXIgc2V2ZXJhbCBTRyBkZXNjcmlwdG9ycyBpbiBvcmRl cgo+IHRvIGRlYWwgd2l0aCB0aGUgSFcgbWF4aW11bSB0cmFuc2ZlciBsZW5ndGguCj4gCj4gVGhp cyBjb3VsZCBlbmQgdXAgaW4gRE1BIG9wZXJhdGlvbnMgc3RhcnRpbmcgZnJvbSBhIG1pc2FsaWdu ZWQKPiBhZGRyZXNzLiBUaGlzIHNlZW1zIGZhdGFsIGZvciB0aGUgSFcgaWYgRFJFIGlzIG5vdCBl bmFibGVkLgo+IAo+IFRoaXMgcGF0Y2ggZXZlbnR1YWxseSBhZGp1c3RzIHRoZSB0cmFuc2ZlciBz aXplIGluIG9yZGVyIHRvIG1ha2Ugc3VyZQo+IGFsbCBvcGVyYXRpb25zIHN0YXJ0IGZyb20gYW4g YWxpZ25lZCBhZGRyZXNzLgo+IAo+IENjOiBSYWRoZXkgU2h5YW0gUGFuZGV5IDxyYWRoZXkuc2h5 YW0ucGFuZGV5QHhpbGlueC5jb20+Cj4gU2lnbmVkLW9mZi1ieTogQW5kcmVhIE1lcmVsbG8gPGFu ZHJlYS5tZXJlbGxvQGdtYWlsLmNvbT4KPiBSZXZpZXdlZC1ieTogUmFkaGV5IFNoeWFtIFBhbmRl eSA8cmFkaGV5LnNoeWFtLnBhbmRleUB4aWxpbnguY29tPgo+IC0tLQo+IENoYW5nZXMgaW4gdjI6 Cj4gICAgICAgICAtIGRvbid0IGludHJvZHVjZSBjb3B5X21hc2sgZmllbGQsIHJhdGhlciByZWx5 IG9uIGFscmVhZHktZXNpc3RlbnQKPiAgICAgICAgICAgY29weV9hbGlnbiBmaWVsZC4gU3VnZ2Vz dGVkIGJ5IFJhZGhleSBTaHlhbSBQYW5kZXkKPiAgICAgICAgIC0gcmV3b3JkIHRpdGxlCj4gQ2hh bmdlcyBpbiB2MzoKPiAJLSBmaXggYnVnIGludHJvZHVjZWQgaW4gdjI6IHdyb25nIGNvcHkgc2l6 ZSB3aGVuIERSRSBpcyBlbmFibGVkCj4gCSAgdXNlIGltcGxlbWVudGF0aW9uIHN1Z2dlc3RlZCBi eSBSYWRoZXkgU2h5YW0gUGFuZGV5Cj4gLS0tCj4gIGRyaXZlcnMvZG1hL3hpbGlueC94aWxpbnhf ZG1hLmMgfCAyMCArKysrKysrKysrKysrKysrKysrKwo+ICAxIGZpbGUgY2hhbmdlZCwgMjAgaW5z ZXJ0aW9ucygrKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS94aWxpbngveGlsaW54X2Rt YS5jIGIvZHJpdmVycy9kbWEveGlsaW54L3hpbGlueF9kbWEuYwo+IGluZGV4IDI3YjUyMzUzMGM0 YS4uMTEzZDliZjFiNmExIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZG1hL3hpbGlueC94aWxpbnhf ZG1hLmMKPiArKysgYi9kcml2ZXJzL2RtYS94aWxpbngveGlsaW54X2RtYS5jCj4gQEAgLTE3OTMs NiArMTc5MywxNiBAQCBzdGF0aWMgc3RydWN0IGRtYV9hc3luY190eF9kZXNjcmlwdG9yICp4aWxp bnhfZG1hX3ByZXBfc2xhdmVfc2coCj4gIAkJCSAqLwo+ICAJCQljb3B5ID0gbWluX3Qoc2l6ZV90 LCBzZ19kbWFfbGVuKHNnKSAtIHNnX3VzZWQsCj4gIAkJCQkgICAgIFhJTElOWF9ETUFfTUFYX1RS QU5TX0xFTik7Cj4gKwo+ICsJCQlpZiAoKGNvcHkgKyBzZ191c2VkIDwgc2dfZG1hX2xlbihzZykp ICYmCj4gKwkJCSAgICBjaGFuLT54ZGV2LT5jb21tb24uY29weV9hbGlnbikgewo+ICsJCQkJLyoK PiArCQkJCSAqIElmIHRoaXMgaXMgbm90IHRoZSBsYXN0IGRlc2NyaXB0b3IsIG1ha2Ugc3VyZQo+ ICsJCQkJICogdGhlIG5leHQgb25lIHdpbGwgYmUgcHJvcGVybHkgYWxpZ25lZAo+ICsJCQkJICov Cj4gKwkJCQljb3B5ID0gcm91bmRkb3duKGNvcHksCj4gKwkJCQkJKDEgPDwgY2hhbi0+eGRldi0+ Y29tbW9uLmNvcHlfYWxpZ24pKTsKPiArCQkJfQo+ICAJCQlodyA9ICZzZWdtZW50LT5odzsKPiAg Cj4gIAkJCS8qIEZpbGwgaW4gdGhlIGRlc2NyaXB0b3IgKi8KPiBAQCAtMTg5OCw2ICsxOTA4LDE2 IEBAIHN0YXRpYyBzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyaXB0b3IgKnhpbGlueF9kbWFfcHJl cF9kbWFfY3ljbGljKAo+ICAJCQkgKi8KPiAgCQkJY29weSA9IG1pbl90KHNpemVfdCwgcGVyaW9k X2xlbiAtIHNnX3VzZWQsCj4gIAkJCQkgICAgIFhJTElOWF9ETUFfTUFYX1RSQU5TX0xFTik7Cj4g Kwo+ICsJCQlpZiAoKGNvcHkgKyBzZ191c2VkIDwgcGVyaW9kX2xlbikgJiYKPiArCQkJICAgIGNo YW4tPnhkZXYtPmNvbW1vbi5jb3B5X2FsaWduKSB7Cj4gKwkJCQkvKgo+ICsJCQkJICogSWYgdGhp cyBpcyBub3QgdGhlIGxhc3QgZGVzY3JpcHRvciwgbWFrZSBzdXJlCj4gKwkJCQkgKiB0aGUgbmV4 dCBvbmUgd2lsbCBiZSBwcm9wZXJseSBhbGlnbmVkCj4gKwkJCQkgKi8KPiArCQkJCWNvcHkgPSBy b3VuZGRvd24oY29weSwKPiArCQkJCQkoMSA8PCBjaGFuLT54ZGV2LT5jb21tb24uY29weV9hbGln bikpOwo+ICsJCQl9CgpzYW1lIGNvZGUgcGFzdGVkIHR3aWNlLCBjYW4gd2UgaGF2ZSBhIHJvdXRp bmUgZm9yIHRoaXMuLi4gcGVyaGFwcyBtb3JlCmNvZGUgY2FuIGJlIG1hZGUgY29tbW9uIHRvbwo=