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: Andrea Merello Message-Id: <20180625092724.22164-1-andrea.merello@gmail.com> Date: Mon, 25 Jun 2018 11:27:20 +0200 To: vkoul@kernel.org, dan.j.williams@intel.com, michal.simek@xilinx.com, appana.durga.rao@xilinx.com, dmaengine@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrea Merello , Radhey Shyam Pandey List-ID: V2hlbmV2ZXIgYSBzaW5nbGUgb3IgY3ljbGljIHRyYW5zYWN0aW9uIGlzIHByZXBhcmVkLCB0aGUg ZHJpdmVyCmNvdWxkIGV2ZW50dWFsbHkgc3BsaXQgaXQgb3ZlciBzZXZlcmFsIFNHIGRlc2NyaXB0 b3JzIGluIG9yZGVyCnRvIGRlYWwgd2l0aCB0aGUgSFcgbWF4aW11bSB0cmFuc2ZlciBsZW5ndGgu CgpUaGlzIGNvdWxkIGVuZCB1cCBpbiBETUEgb3BlcmF0aW9ucyBzdGFydGluZyBmcm9tIGEgbWlz YWxpZ25lZAphZGRyZXNzLiBUaGlzIHNlZW1zIGZhdGFsIGZvciB0aGUgSFcgaWYgRFJFIGlzIG5v dCBlbmFibGVkLgoKVGhpcyBwYXRjaCBldmVudHVhbGx5IGFkanVzdHMgdGhlIHRyYW5zZmVyIHNp emUgaW4gb3JkZXIgdG8gbWFrZSBzdXJlCmFsbCBvcGVyYXRpb25zIHN0YXJ0IGZyb20gYW4gYWxp Z25lZCBhZGRyZXNzLgoKQ2M6IFJhZGhleSBTaHlhbSBQYW5kZXkgPHJhZGhleS5zaHlhbS5wYW5k ZXlAeGlsaW54LmNvbT4KU2lnbmVkLW9mZi1ieTogQW5kcmVhIE1lcmVsbG8gPGFuZHJlYS5tZXJl bGxvQGdtYWlsLmNvbT4KUmV2aWV3ZWQtYnk6IFJhZGhleSBTaHlhbSBQYW5kZXkgPHJhZGhleS5z aHlhbS5wYW5kZXlAeGlsaW54LmNvbT4KLS0tCkNoYW5nZXMgaW4gdjI6CiAgICAgICAgLSBkb24n dCBpbnRyb2R1Y2UgY29weV9tYXNrIGZpZWxkLCByYXRoZXIgcmVseSBvbiBhbHJlYWR5LWVzaXN0 ZW50CiAgICAgICAgICBjb3B5X2FsaWduIGZpZWxkLiBTdWdnZXN0ZWQgYnkgUmFkaGV5IFNoeWFt IFBhbmRleQogICAgICAgIC0gcmV3b3JkIHRpdGxlCkNoYW5nZXMgaW4gdjM6CgktIGZpeCBidWcg aW50cm9kdWNlZCBpbiB2Mjogd3JvbmcgY29weSBzaXplIHdoZW4gRFJFIGlzIGVuYWJsZWQKCSAg dXNlIGltcGxlbWVudGF0aW9uIHN1Z2dlc3RlZCBieSBSYWRoZXkgU2h5YW0gUGFuZGV5Ci0tLQog ZHJpdmVycy9kbWEveGlsaW54L3hpbGlueF9kbWEuYyB8IDIwICsrKysrKysrKysrKysrKysrKysr CiAxIGZpbGUgY2hhbmdlZCwgMjAgaW5zZXJ0aW9ucygrKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMv ZG1hL3hpbGlueC94aWxpbnhfZG1hLmMgYi9kcml2ZXJzL2RtYS94aWxpbngveGlsaW54X2RtYS5j CmluZGV4IDI3YjUyMzUzMGM0YS4uMTEzZDliZjFiNmExIDEwMDY0NAotLS0gYS9kcml2ZXJzL2Rt YS94aWxpbngveGlsaW54X2RtYS5jCisrKyBiL2RyaXZlcnMvZG1hL3hpbGlueC94aWxpbnhfZG1h LmMKQEAgLTE3OTMsNiArMTc5MywxNiBAQCBzdGF0aWMgc3RydWN0IGRtYV9hc3luY190eF9kZXNj cmlwdG9yICp4aWxpbnhfZG1hX3ByZXBfc2xhdmVfc2coCiAJCQkgKi8KIAkJCWNvcHkgPSBtaW5f dChzaXplX3QsIHNnX2RtYV9sZW4oc2cpIC0gc2dfdXNlZCwKIAkJCQkgICAgIFhJTElOWF9ETUFf TUFYX1RSQU5TX0xFTik7CisKKwkJCWlmICgoY29weSArIHNnX3VzZWQgPCBzZ19kbWFfbGVuKHNn KSkgJiYKKwkJCSAgICBjaGFuLT54ZGV2LT5jb21tb24uY29weV9hbGlnbikgeworCQkJCS8qCisJ CQkJICogSWYgdGhpcyBpcyBub3QgdGhlIGxhc3QgZGVzY3JpcHRvciwgbWFrZSBzdXJlCisJCQkJ ICogdGhlIG5leHQgb25lIHdpbGwgYmUgcHJvcGVybHkgYWxpZ25lZAorCQkJCSAqLworCQkJCWNv cHkgPSByb3VuZGRvd24oY29weSwKKwkJCQkJKDEgPDwgY2hhbi0+eGRldi0+Y29tbW9uLmNvcHlf YWxpZ24pKTsKKwkJCX0KIAkJCWh3ID0gJnNlZ21lbnQtPmh3OwogCiAJCQkvKiBGaWxsIGluIHRo ZSBkZXNjcmlwdG9yICovCkBAIC0xODk4LDYgKzE5MDgsMTYgQEAgc3RhdGljIHN0cnVjdCBkbWFf YXN5bmNfdHhfZGVzY3JpcHRvciAqeGlsaW54X2RtYV9wcmVwX2RtYV9jeWNsaWMoCiAJCQkgKi8K IAkJCWNvcHkgPSBtaW5fdChzaXplX3QsIHBlcmlvZF9sZW4gLSBzZ191c2VkLAogCQkJCSAgICAg WElMSU5YX0RNQV9NQVhfVFJBTlNfTEVOKTsKKworCQkJaWYgKChjb3B5ICsgc2dfdXNlZCA8IHBl cmlvZF9sZW4pICYmCisJCQkgICAgY2hhbi0+eGRldi0+Y29tbW9uLmNvcHlfYWxpZ24pIHsKKwkJ CQkvKgorCQkJCSAqIElmIHRoaXMgaXMgbm90IHRoZSBsYXN0IGRlc2NyaXB0b3IsIG1ha2Ugc3Vy ZQorCQkJCSAqIHRoZSBuZXh0IG9uZSB3aWxsIGJlIHByb3Blcmx5IGFsaWduZWQKKwkJCQkgKi8K KwkJCQljb3B5ID0gcm91bmRkb3duKGNvcHksCisJCQkJCSgxIDw8IGNoYW4tPnhkZXYtPmNvbW1v bi5jb3B5X2FsaWduKSk7CisJCQl9CiAJCQlodyA9ICZzZWdtZW50LT5odzsKIAkJCXhpbGlueF9h eGlkbWFfYnVmKGNoYW4sIGh3LCBidWZfYWRkciwgc2dfdXNlZCwKIAkJCQkJICBwZXJpb2RfbGVu ICogaSk7Cg==