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: [2/3] k3dma: add support to reserved minimum channels From: Guodong Xu Message-Id: <20180622032416.20133-3-guodong.xu@linaro.org> Date: Fri, 22 Jun 2018 11:24:15 +0800 To: vkoul@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, dan.j.williams@intel.com Cc: liyu65@hisilicon.com, suzhuangluan@hisilicon.com, xuhongtao8@hisilicon.com, zhongkaihua@huawei.com, xuezhiliang@hisilicon.com, xupeng7@huawei.com, sunliang10@huawei.com, fengbaopeng@hisilicon.com, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Guodong Xu List-ID: RnJvbTogTGkgWXUgPGxpeXU2NUBoaXNpbGljb24uY29tPgoKT24gazMgc2VyaWVzIG9mIFNvQywg RE1BIGNvbnRyb2xsZXIgcmVzZXJ2ZXMgc29tZSBjaGFubmVscyBmb3IKb3RoZXIgb24tY2hpcCBj b3Byb2Nlc3NvcnMuIEJ5IGFkZGluZyBzdXBwb3J0IHRvIGRtYV9taW5fY2hhbiwga2VybmVsCndp bGwgbm90IGJlIGFibGUgdG8gdXNlIHRoZXNlIHJlc2VydmVkIGNoYW5uZWxzLgoKT25lIGV4YW1w bGUgaXMgb24gSGkzNjYwIHBsYXRmb3JtLCBjaGFubmVsIDAgaXMgcmVzZXJ2ZWQgdG8gbHBtMy4K ClBsZWFzZSBhbHNvIHJlZmVyIHRvIERvY3VtZW50YXRpb24vZGV2aWNldHJlZS9iaW5kaW5ncy9k bWEvazNkbWEudHh0CgpTaWduZWQtb2ZmLWJ5OiBMaSBZdSA8bGl5dTY1QGhpc2lsaWNvbi5jb20+ ClNpZ25lZC1vZmYtYnk6IEd1b2RvbmcgWHUgPGd1b2RvbmcueHVAbGluYXJvLm9yZz4KLS0tCiBk cml2ZXJzL2RtYS9rM2RtYS5jIHwgMTMgKysrKysrKystLS0tLQogMSBmaWxlIGNoYW5nZWQsIDgg aW5zZXJ0aW9ucygrKSwgNSBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS9r M2RtYS5jIGIvZHJpdmVycy9kbWEvazNkbWEuYwppbmRleCBmYTMxY2NjYmUwNGYuLjEzY2VjMTI3 NDJlMyAxMDA2NDQKLS0tIGEvZHJpdmVycy9kbWEvazNkbWEuYworKysgYi9kcml2ZXJzL2RtYS9r M2RtYS5jCkBAIC0xMTMsNiArMTEzLDcgQEAgc3RydWN0IGszX2RtYV9kZXYgewogCXN0cnVjdCBk bWFfcG9vbAkJKnBvb2w7CiAJdTMyCQkJZG1hX2NoYW5uZWxzOwogCXUzMgkJCWRtYV9yZXF1ZXN0 czsKKwl1MzIJCQlkbWFfbWluX2NoYW47CiAJdW5zaWduZWQgaW50CQlpcnE7CiB9OwogCkBAIC0z MDksNyArMzEwLDcgQEAgc3RhdGljIHZvaWQgazNfZG1hX3Rhc2tsZXQodW5zaWduZWQgbG9uZyBh cmcpCiAKIAkvKiBjaGVjayBuZXcgY2hhbm5lbCByZXF1ZXN0IGluIGQtPmNoYW5fcGVuZGluZyAq LwogCXNwaW5fbG9ja19pcnEoJmQtPmxvY2spOwotCWZvciAocGNoID0gMDsgcGNoIDwgZC0+ZG1h X2NoYW5uZWxzOyBwY2grKykgeworCWZvciAocGNoID0gZC0+ZG1hX21pbl9jaGFuOyBwY2ggPCBk LT5kbWFfY2hhbm5lbHM7IHBjaCsrKSB7CiAJCXAgPSAmZC0+cGh5W3BjaF07CiAKIAkJaWYgKHAt PnZjaGFuID09IE5VTEwgJiYgIWxpc3RfZW1wdHkoJmQtPmNoYW5fcGVuZGluZykpIHsKQEAgLTMy Niw3ICszMjcsNyBAQCBzdGF0aWMgdm9pZCBrM19kbWFfdGFza2xldCh1bnNpZ25lZCBsb25nIGFy ZykKIAl9CiAJc3Bpbl91bmxvY2tfaXJxKCZkLT5sb2NrKTsKIAotCWZvciAocGNoID0gMDsgcGNo IDwgZC0+ZG1hX2NoYW5uZWxzOyBwY2grKykgeworCWZvciAocGNoID0gZC0+ZG1hX21pbl9jaGFu OyBwY2ggPCBkLT5kbWFfY2hhbm5lbHM7IHBjaCsrKSB7CiAJCWlmIChwY2hfYWxsb2MgJiAoMSA8 PCBwY2gpKSB7CiAJCQlwID0gJmQtPnBoeVtwY2hdOwogCQkJYyA9IHAtPnZjaGFuOwpAQCAtODI1 LDYgKzgyNiw4IEBAIHN0YXRpYyBpbnQgazNfZG1hX3Byb2JlKHN0cnVjdCBwbGF0Zm9ybV9kZXZp Y2UgKm9wKQogCQkJCSJkbWEtY2hhbm5lbHMiLCAmZC0+ZG1hX2NoYW5uZWxzKTsKIAkJb2ZfcHJv cGVydHlfcmVhZF91MzIoKCZvcC0+ZGV2KS0+b2Zfbm9kZSwKIAkJCQkiZG1hLXJlcXVlc3RzIiwg JmQtPmRtYV9yZXF1ZXN0cyk7CisJCW9mX3Byb3BlcnR5X3JlYWRfdTMyKCgmb3AtPmRldiktPm9m X25vZGUsCisJCQkJImRtYS1taW4tY2hhbiIsICZkLT5kbWFfbWluX2NoYW4pOwogCX0KIAogCWQt PmNsayA9IGRldm1fY2xrX2dldCgmb3AtPmRldiwgTlVMTCk7CkBAIC04NDgsMTIgKzg1MSwxMiBA QCBzdGF0aWMgaW50IGszX2RtYV9wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpvcCkKIAkJ cmV0dXJuIC1FTk9NRU07CiAKIAkvKiBpbml0IHBoeSBjaGFubmVsICovCi0JZC0+cGh5ID0gZGV2 bV9rY2FsbG9jKCZvcC0+ZGV2LAotCQlkLT5kbWFfY2hhbm5lbHMsIHNpemVvZihzdHJ1Y3QgazNf ZG1hX3BoeSksIEdGUF9LRVJORUwpOworCWQtPnBoeSA9IGRldm1fa2NhbGxvYygmb3AtPmRldiwg KGQtPmRtYV9jaGFubmVscyAtIGQtPmRtYV9taW5fY2hhbiksCisJCQlzaXplb2Yoc3RydWN0IGsz X2RtYV9waHkpLCBHRlBfS0VSTkVMKTsKIAlpZiAoZC0+cGh5ID09IE5VTEwpCiAJCXJldHVybiAt RU5PTUVNOwogCi0JZm9yIChpID0gMDsgaSA8IGQtPmRtYV9jaGFubmVsczsgaSsrKSB7CisJZm9y IChpID0gZC0+ZG1hX21pbl9jaGFuOyBpIDwgZC0+ZG1hX2NoYW5uZWxzOyBpKyspIHsKIAkJc3Ry dWN0IGszX2RtYV9waHkgKnAgPSAmZC0+cGh5W2ldOwogCiAJCXAtPmlkeCA9IGk7Cg==