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: [v2,1/5] dmaengine: xilinx_dma: in axidma slave_sg and dma_cyclic mode align split descriptors From: Andrea Merello Message-Id: <20180621115822.20058-1-andrea.merello@gmail.com> Date: Thu, 21 Jun 2018 13:58:18 +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 List-ID: V2hlbmV2ZXIgYSBzaW5nbGUgb3IgY3ljbGljIHRyYW5zYWN0aW9uIGlzIHByZXBhcmVkLCB0aGUg ZHJpdmVyCmNvdWxkIGV2ZW50dWFsbHkgc3BsaXQgaXQgb3ZlciBzZXZlcmFsIFNHIGRlc2NyaXB0 b3JzIGluIG9yZGVyCnRvIGRlYWwgd2l0aCB0aGUgSFcgbWF4aW11bSB0cmFuc2ZlciBsZW5ndGgu CgpUaGlzIGNvdWxkIGVuZCB1cCBpbiBETUEgb3BlcmF0aW9ucyBzdGFydGluZyBmcm9tIGEgbWlz YWxpZ25lZAphZGRyZXNzLiBUaGlzIHNlZW1zIGZhdGFsIGZvciB0aGUgSFcgaWYgRFJFIGlzIG5v dCBlbmFibGVkLgoKVGhpcyBwYXRjaCBldmVudHVhbGx5IGFkanVzdHMgdGhlIHRyYW5zZmVyIHNp emUgaW4gb3JkZXIgdG8gbWFrZSBzdXJlCmFsbCBvcGVyYXRpb25zIHN0YXJ0IGZyb20gYW4gYWxp Z25lZCBhZGRyZXNzLgoKU2lnbmVkLW9mZi1ieTogQW5kcmVhIE1lcmVsbG8gPGFuZHJlYS5tZXJl bGxvQGdtYWlsLmNvbT4KLS0tCkNoYW5nZXMgaW4gdjI6CgktIGRvbid0IGludHJvZHVjZSBjb3B5 X21hc2sgZmllbGQsIHJhdGhlciByZWx5IG9uIGFscmVhZHktZXNpc3RlbnQKCSAgY29weV9hbGln biBmaWVsZC4gU3VnZ2VzdGVkIGJ5IFJhZGhleSBTaHlhbSBQYW5kZXkKCS0gcmV3b3JkIHRpdGxl Ci0tLQogZHJpdmVycy9kbWEveGlsaW54L3hpbGlueF9kbWEuYyB8IDIyICsrKysrKysrKysrKysr KystLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAxNiBpbnNlcnRpb25zKCspLCA2IGRlbGV0aW9ucygt KQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZG1hL3hpbGlueC94aWxpbnhfZG1hLmMgYi9kcml2ZXJz L2RtYS94aWxpbngveGlsaW54X2RtYS5jCmluZGV4IDI3YjUyMzUzMGM0YS4uMjJkN2E2Yjg1ZTY1 IDEwMDY0NAotLS0gYS9kcml2ZXJzL2RtYS94aWxpbngveGlsaW54X2RtYS5jCisrKyBiL2RyaXZl cnMvZG1hL3hpbGlueC94aWxpbnhfZG1hLmMKQEAgLTE3ODksMTAgKzE3ODksMTUgQEAgc3RhdGlj IHN0cnVjdCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAqeGlsaW54X2RtYV9wcmVwX3NsYXZlX3Nn KAogCiAJCQkvKgogCQkJICogQ2FsY3VsYXRlIHRoZSBtYXhpbXVtIG51bWJlciBvZiBieXRlcyB0 byB0cmFuc2ZlciwKLQkJCSAqIG1ha2luZyBzdXJlIGl0IGlzIGxlc3MgdGhhbiB0aGUgaHcgbGlt aXQKKwkJCSAqIG1ha2luZyBzdXJlIGl0IGlzIGxlc3MgdGhhbiB0aGUgaHcgbGltaXQgYW5kIHRo YXQKKwkJCSAqIHRoZSBuZXh0IGNodW5jayBzdGFydCBhZGRyZXNzIGlzIGFsaWduZWQKIAkJCSAq LwotCQkJY29weSA9IG1pbl90KHNpemVfdCwgc2dfZG1hX2xlbihzZykgLSBzZ191c2VkLAotCQkJ CSAgICAgWElMSU5YX0RNQV9NQVhfVFJBTlNfTEVOKTsKKwkJCWNvcHkgPSBzZ19kbWFfbGVuKHNn KSAtIHNnX3VzZWQ7CisJCQlpZiAoY29weSA+IFhJTElOWF9ETUFfTUFYX1RSQU5TX0xFTiAmJgor CQkJICAgIGNoYW4tPnhkZXYtPmNvbW1vbi5jb3B5X2FsaWduKQorCQkJCWNvcHkgPSByb3VuZGRv d24oWElMSU5YX0RNQV9NQVhfVFJBTlNfTEVOLAorCQkJCQkgKDEgPDwgY2hhbi0+eGRldi0+Y29t bW9uLmNvcHlfYWxpZ24pKTsKKwogCQkJaHcgPSAmc2VnbWVudC0+aHc7CiAKIAkJCS8qIEZpbGwg aW4gdGhlIGRlc2NyaXB0b3IgKi8KQEAgLTE4OTQsMTAgKzE4OTksMTUgQEAgc3RhdGljIHN0cnVj dCBkbWFfYXN5bmNfdHhfZGVzY3JpcHRvciAqeGlsaW54X2RtYV9wcmVwX2RtYV9jeWNsaWMoCiAK IAkJCS8qCiAJCQkgKiBDYWxjdWxhdGUgdGhlIG1heGltdW0gbnVtYmVyIG9mIGJ5dGVzIHRvIHRy YW5zZmVyLAotCQkJICogbWFraW5nIHN1cmUgaXQgaXMgbGVzcyB0aGFuIHRoZSBodyBsaW1pdAor CQkJICogbWFraW5nIHN1cmUgaXQgaXMgbGVzcyB0aGFuIHRoZSBodyBsaW1pdCBhbmQgdGhhdAor CQkJICogdGhlIG5leHQgY2h1bmNrIHN0YXJ0IGFkZHJlc3MgaXMgYWxpZ25lZAogCQkJICovCi0J CQljb3B5ID0gbWluX3Qoc2l6ZV90LCBwZXJpb2RfbGVuIC0gc2dfdXNlZCwKLQkJCQkgICAgIFhJ TElOWF9ETUFfTUFYX1RSQU5TX0xFTik7CisJCQljb3B5ID0gcGVyaW9kX2xlbiAtIHNnX3VzZWQ7 CisJCQlpZiAoY29weSA+IFhJTElOWF9ETUFfTUFYX1RSQU5TX0xFTiAmJgorCQkJICAgIGNoYW4t PnhkZXYtPmNvbW1vbi5jb3B5X2FsaWduKQorCQkJCWNvcHkgPSByb3VuZGRvd24oWElMSU5YX0RN QV9NQVhfVFJBTlNfTEVOLAorCQkJCQkgKDEgPDwgY2hhbi0+eGRldi0+Y29tbW9uLmNvcHlfYWxp Z24pKTsKKwogCQkJaHcgPSAmc2VnbWVudC0+aHc7CiAJCQl4aWxpbnhfYXhpZG1hX2J1ZihjaGFu LCBodywgYnVmX2FkZHIsIHNnX3VzZWQsCiAJCQkJCSAgcGVyaW9kX2xlbiAqIGkpOwo=