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: [v6,4/7] dmaengine: xilinx_dma: program hardware supported buffer length From: Andrea Merello Message-Id: <20181120153151.18024-4-andrea.merello@gmail.com> Date: Tue, 20 Nov 2018 16:31:48 +0100 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, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, radhey.shyam.pandey@xilinx.com, Andrea Merello List-ID: RnJvbTogUmFkaGV5IFNoeWFtIFBhbmRleSA8cmFkaGV5LnNoeWFtLnBhbmRleUB4aWxpbnguY29t PgoKQVhJLURNQSBJUCBzdXBwb3J0cyBjb25maWd1cmFibGUgKGNfc2dfbGVuZ3RoX3dpZHRoKSBi dWZmZXIgbGVuZ3RoCnJlZ2lzdGVyIHdpZHRoLCBoZW5jZSByZWFkIGJ1ZmZlciBsZW5ndGggKHhs bngsc2ctbGVuZ3RoLXdpZHRoKSBEVApwcm9wZXJ0eSBhbmQgZW5zdXJlIHRoYXQgZHJpdmVyIGRv ZXNuJ3QgcHJvZ3JhbSBidWZmZXIgbGVuZ3RoCmV4Y2VlZGluZyB0aGUgc3VwcG9ydGVkIGxpbWl0 LiBGb3IgVkRNQSBhbmQgQ0RNQSB0aGVyZSBpcyBubyBjaGFuZ2UuCgpDYzogUm9iIEhlcnJpbmcg PHJvYmgrZHRAa2VybmVsLm9yZz4KQ2M6IE1hcmsgUnV0bGFuZCA8bWFyay5ydXRsYW5kQGFybS5j b20+CkNjOiBkZXZpY2V0cmVlQHZnZXIua2VybmVsLm9yZwpTaWduZWQtb2ZmLWJ5OiBSYWRoZXkg U2h5YW0gUGFuZGV5IDxyYWRoZXkuc2h5YW0ucGFuZGV5QHhpbGlueC5jb20+ClNpZ25lZC1vZmYt Ynk6IE1pY2hhbCBTaW1layA8bWljaGFsLnNpbWVrQHhpbGlueC5jb20+ClNpZ25lZC1vZmYtYnk6 IEFuZHJlYSBNZXJlbGxvIDxhbmRyZWEubWVyZWxsb0BnbWFpbC5jb20+IFtyZWJhc2UsIHJld29y ZF0KLS0tCkNoYW5nZXMgaW4gdjI6CiAgICAgICAgLSBkcm9wIG9yaWdpbmFsIHBhdGNoIGFuZCBy ZXBsYWNlIHdpdGggdGhlIG9uZSBpbiBYaWxpbnggdHJlZQpDaGFuZ2VzIGluIHYzOgoJLSBjYyBE VCBtYWludGFpbmVycy9NTApDaGFuZ2VzIGluIHY0OgoJLSB1cHBlciBib3VuZCBmb3IgdGhlIHBy b3BlcnR5IHNob3VsZCBiZSAyNiwgbm90IDIzCgktIGFkZCB3YXJuIGZvciB3aWR0aCA+IDIzIGFz IHBlciB4aWxpbnggb3JpZ2luYWwgcGF0Y2gKCS0gcmV3b3JrIGR1ZSB0byBjaGFuZ2VzIGludHJv ZHVjZWQgaW4gMS82CkNoYW5nZXMgaW4gdjU6CglOb25lCkNoYW5nZXMgaW4gdjY6CglOb25lCi0t LQogZHJpdmVycy9kbWEveGlsaW54L3hpbGlueF9kbWEuYyB8IDI0ICsrKysrKysrKysrKysrKysr KysrLS0tLQogMSBmaWxlIGNoYW5nZWQsIDIwIGluc2VydGlvbnMoKyksIDQgZGVsZXRpb25zKC0p CgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEveGlsaW54L3hpbGlueF9kbWEuYyBiL2RyaXZlcnMv ZG1hL3hpbGlueC94aWxpbnhfZG1hLmMKaW5kZXggY2JmMzRkZDVlOTY2Li4wNzE2ZGI2MWYxZDAg MTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZG1hL3hpbGlueC94aWxpbnhfZG1hLmMKKysrIGIvZHJpdmVy cy9kbWEveGlsaW54L3hpbGlueF9kbWEuYwpAQCAtMTYxLDcgKzE2MSw5IEBACiAjZGVmaW5lIFhJ TElOWF9ETUFfUkVHX0JUVAkJMHgyOAogCiAvKiBBWEkgRE1BIFNwZWNpZmljIE1hc2tzL0JpdCBm aWVsZHMgKi8KLSNkZWZpbmUgWElMSU5YX0RNQV9NQVhfVFJBTlNfTEVOCUdFTk1BU0soMjIsIDAp CisjZGVmaW5lIFhJTElOWF9ETUFfTUFYX1RSQU5TX0xFTl9NSU4JOAorI2RlZmluZSBYSUxJTlhf RE1BX01BWF9UUkFOU19MRU5fTUFYCTIzCisjZGVmaW5lIFhJTElOWF9ETUFfVjJfTUFYX1RSQU5T X0xFTl9NQVgJMjYKICNkZWZpbmUgWElMSU5YX0RNQV9DUl9DT0FMRVNDRV9NQVgJR0VOTUFTSygy MywgMTYpCiAjZGVmaW5lIFhJTElOWF9ETUFfQ1JfQ1lDTElDX0JEX0VOX01BU0sJQklUKDQpCiAj ZGVmaW5lIFhJTElOWF9ETUFfQ1JfQ09BTEVTQ0VfU0hJRlQJMTYKQEAgLTI2MjIsNyArMjYyNCw3 IEBAIHN0YXRpYyBpbnQgeGlsaW54X2RtYV9wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpw ZGV2KQogCXN0cnVjdCB4aWxpbnhfZG1hX2RldmljZSAqeGRldjsKIAlzdHJ1Y3QgZGV2aWNlX25v ZGUgKmNoaWxkLCAqbnAgPSBwZGV2LT5kZXYub2Zfbm9kZTsKIAlzdHJ1Y3QgcmVzb3VyY2UgKmlv OwotCXUzMiBudW1fZnJhbWVzLCBhZGRyX3dpZHRoOworCXUzMiBudW1fZnJhbWVzLCBhZGRyX3dp ZHRoLCBsZW5fd2lkdGg7CiAJaW50IGksIGVycjsKIAogCS8qIEFsbG9jYXRlIGFuZCBpbml0aWFs aXplIHRoZSBETUEgZW5naW5lIHN0cnVjdHVyZSAqLwpAQCAtMjY1NCwxMCArMjY1NiwyNCBAQCBz dGF0aWMgaW50IHhpbGlueF9kbWFfcHJvYmUoc3RydWN0IHBsYXRmb3JtX2RldmljZSAqcGRldikK IAogCS8qIFJldHJpZXZlIHRoZSBETUEgZW5naW5lIHByb3BlcnRpZXMgZnJvbSB0aGUgZGV2aWNl IHRyZWUgKi8KIAl4ZGV2LT5oYXNfc2cgPSBvZl9wcm9wZXJ0eV9yZWFkX2Jvb2wobm9kZSwgInhs bngsaW5jbHVkZS1zZyIpOwotCXhkZXYtPm1heF9idWZmZXJfbGVuID0gWElMSU5YX0RNQV9NQVhf VFJBTlNfTEVOOworCXhkZXYtPm1heF9idWZmZXJfbGVuID0gR0VOTUFTSyhYSUxJTlhfRE1BX01B WF9UUkFOU19MRU5fTUFYIC0gMSwgMCk7CiAKLQlpZiAoeGRldi0+ZG1hX2NvbmZpZy0+ZG1hdHlw ZSA9PSBYRE1BX1RZUEVfQVhJRE1BKQorCWlmICh4ZGV2LT5kbWFfY29uZmlnLT5kbWF0eXBlID09 IFhETUFfVFlQRV9BWElETUEpIHsKIAkJeGRldi0+bWNkbWEgPSBvZl9wcm9wZXJ0eV9yZWFkX2Jv b2wobm9kZSwgInhsbngsbWNkbWEiKTsKKwkJaWYgKCFvZl9wcm9wZXJ0eV9yZWFkX3UzMihub2Rl LCAieGxueCxzZy1sZW5ndGgtd2lkdGgiLAorCQkJCQkgICZsZW5fd2lkdGgpKSB7CisJCQlpZiAo bGVuX3dpZHRoIDwgWElMSU5YX0RNQV9NQVhfVFJBTlNfTEVOX01JTiB8fAorCQkJICAgIGxlbl93 aWR0aCA+IFhJTElOWF9ETUFfVjJfTUFYX1RSQU5TX0xFTl9NQVgpIHsKKwkJCQlkZXZfd2Fybih4 ZGV2LT5kZXYsCisJCQkJCSAiaW52YWxpZCB4bG54LHNnLWxlbmd0aC13aWR0aCBwcm9wZXJ0eSB2 YWx1ZS4gVXNpbmcgZGVmYXVsdCB3aWR0aFxuIik7CisJCQl9IGVsc2UgeworCQkJCWlmIChsZW5f d2lkdGggPiBYSUxJTlhfRE1BX01BWF9UUkFOU19MRU5fTUFYKQorCQkJCQlkZXZfd2Fybih4ZGV2 LT5kZXYsICJQbGVhc2UgZW5zdXJlIHRoYXQgSVAgc3VwcG9ydHMgYnVmZmVyIGxlbmd0aCA+IDIz IGJpdHNcbiIpOworCQkJCXhkZXYtPm1heF9idWZmZXJfbGVuID0KKwkJCQkJR0VOTUFTSyhsZW5f d2lkdGggLSAxLCAwKTsKKwkJCX0KKwkJfQorCX0KIAogCWlmICh4ZGV2LT5kbWFfY29uZmlnLT5k bWF0eXBlID09IFhETUFfVFlQRV9WRE1BKSB7CiAJCWVyciA9IG9mX3Byb3BlcnR5X3JlYWRfdTMy KG5vZGUsICJ4bG54LG51bS1mc3RvcmVzIiwK