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: [RFC,1/5] dmaengine: Add support for reporting DMA cached data amount From: Vinod Koul Message-Id: <20181009104755.GK2372@vkoul-mobl> Date: Tue, 9 Oct 2018 16:17:55 +0530 To: Peter Ujfalusi Cc: dan.j.williams@intel.com, dmaengine@vger.kernel.org, grygorii.strashko@ti.com List-ID: T24gMjQtMDktMTgsIDE2OjAwLCBQZXRlciBVamZhbHVzaSB3cm90ZToKPiBBIERNQSBoYXJkd2Fy ZSBjYW4gaGF2ZSBiaWcgY2FjaGUgb3IgRklGTyBhbmQgdGhlIGFtb3VudCBvZiBkYXRhIHNpdHRp bmcgaW4KPiB0aGUgRE1BIGZhYnJpYyBjYW4gYmUgYW4gaW50ZXJlc3QgZm9yIHRoZSBjbGllbnRz Lgo+IAo+IEZvciBleGFtcGxlIGluIGF1ZGlvIHdlIHdhbnQgdG8ga25vdyB0aGUgZGVsYXkgaW4g dGhlIGRhdGEgZmxvdyBhbmQgaW4gY2FzZQo+IHRoZSBETUEgaGF2ZSBzaWduaWZpY2FudGx5IGxh cmdlIEZJRk8vY2FjaGUsIGl0IGNhbiBhZmZlY3QgdGhlIGxhdGVuYy9kZWxheQoKdGhpcyBsb29r cyBva2F5IHRvIG1lLCBidXQgbm90IHJlYWxseSB1cCBmb3IgJ2NhY2hlZCcsIGJldHRlcgphbHRl cm5hdGVzPwoKQWxzbyB3ZSBuZWVkIHRvIHVwZGF0ZSBEb2N1bWVudGF0aW9uIGZvciB0aGlzLi4K Cj4gCj4gU2lnbmVkLW9mZi1ieTogUGV0ZXIgVWpmYWx1c2kgPHBldGVyLnVqZmFsdXNpQHRpLmNv bT4KPiAtLS0KPiAgZHJpdmVycy9kbWEvZG1hZW5naW5lLmggICB8IDcgKysrKysrKwo+ICBpbmNs dWRlL2xpbnV4L2RtYWVuZ2luZS5oIHwgMiArKwo+ICAyIGZpbGVzIGNoYW5nZWQsIDkgaW5zZXJ0 aW9ucygrKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS9kbWFlbmdpbmUuaCBiL2RyaXZl cnMvZG1hL2RtYWVuZ2luZS5oCj4gaW5kZXggNTAxYzBiMDYzZjg1Li44MDIxNDI3MGI3MGUgMTAw NjQ0Cj4gLS0tIGEvZHJpdmVycy9kbWEvZG1hZW5naW5lLmgKPiArKysgYi9kcml2ZXJzL2RtYS9k bWFlbmdpbmUuaAo+IEBAIC03Nyw2ICs3Nyw3IEBAIHN0YXRpYyBpbmxpbmUgZW51bSBkbWFfc3Rh dHVzIGRtYV9jb29raWVfc3RhdHVzKHN0cnVjdCBkbWFfY2hhbiAqY2hhbiwKPiAgCQlzdGF0ZS0+ bGFzdCA9IGNvbXBsZXRlOwo+ICAJCXN0YXRlLT51c2VkID0gdXNlZDsKPiAgCQlzdGF0ZS0+cmVz aWR1ZSA9IDA7Cj4gKwkJc3RhdGUtPmNhY2hlZCA9IDA7Cj4gIAl9Cj4gIAlyZXR1cm4gZG1hX2Fz eW5jX2lzX2NvbXBsZXRlKGNvb2tpZSwgY29tcGxldGUsIHVzZWQpOwo+ICB9Cj4gQEAgLTg3LDYg Kzg4LDEyIEBAIHN0YXRpYyBpbmxpbmUgdm9pZCBkbWFfc2V0X3Jlc2lkdWUoc3RydWN0IGRtYV90 eF9zdGF0ZSAqc3RhdGUsIHUzMiByZXNpZHVlKQo+ICAJCXN0YXRlLT5yZXNpZHVlID0gcmVzaWR1 ZTsKPiAgfQo+ICAKPiArc3RhdGljIGlubGluZSB2b2lkIGRtYV9zZXRfY2FjaGVkKHN0cnVjdCBk bWFfdHhfc3RhdGUgKnN0YXRlLCB1MzIgY2FjaGVkKQo+ICt7Cj4gKwlpZiAoc3RhdGUpCj4gKwkJ c3RhdGUtPmNhY2hlZCA9IGNhY2hlZDsKPiArfQo+ICsKPiAgc3RydWN0IGRtYWVuZ2luZV9kZXNj X2NhbGxiYWNrIHsKPiAgCWRtYV9hc3luY190eF9jYWxsYmFjayBjYWxsYmFjazsKPiAgCWRtYV9h c3luY190eF9jYWxsYmFja19yZXN1bHQgY2FsbGJhY2tfcmVzdWx0Owo+IGRpZmYgLS1naXQgYS9p bmNsdWRlL2xpbnV4L2RtYWVuZ2luZS5oIGIvaW5jbHVkZS9saW51eC9kbWFlbmdpbmUuaAo+IGlu ZGV4IDEwZmY3MWIxM2VlZi4uMTZjOWQwMjE5ODhhIDEwMDY0NAo+IC0tLSBhL2luY2x1ZGUvbGlu dXgvZG1hZW5naW5lLmgKPiArKysgYi9pbmNsdWRlL2xpbnV4L2RtYWVuZ2luZS5oCj4gQEAgLTcw MSwxMSArNzAxLDEzIEBAIHN0YXRpYyBpbmxpbmUgc3RydWN0IGRtYV9hc3luY190eF9kZXNjcmlw dG9yICp0eGRfbmV4dChzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyCj4gICAqIEByZXNpZHVlOiB0 aGUgcmVtYWluaW5nIG51bWJlciBvZiBieXRlcyBsZWZ0IHRvIHRyYW5zbWl0Cj4gICAqCW9uIHRo ZSBzZWxlY3RlZCB0cmFuc2ZlciBmb3Igc3RhdGVzIERNQV9JTl9QUk9HUkVTUyBhbmQKPiAgICoJ RE1BX1BBVVNFRCBpZiB0aGlzIGlzIGltcGxlbWVudGVkIGluIHRoZSBkcml2ZXIsIGVsc2UgMAo+ ICsgKiBAY2FjaGVkOiBhbW91bnQgb2YgZGF0YSBpbiBieXRlcyBjYWNoZWQgYnkgdGhlIERNQS4K PiAgICovCj4gIHN0cnVjdCBkbWFfdHhfc3RhdGUgewo+ICAJZG1hX2Nvb2tpZV90IGxhc3Q7Cj4g IAlkbWFfY29va2llX3QgdXNlZDsKPiAgCXUzMiByZXNpZHVlOwo+ICsJdTMyIGNhY2hlZDsKPiAg fTsKPiAgCj4gIC8qKgo+IC0tIAo+IFBldGVyCj4gCj4gVGV4YXMgSW5zdHJ1bWVudHMgRmlubGFu ZCBPeSwgUG9ya2thbGFua2F0dSAyMiwgMDAxODAgSGVsc2lua2kuCj4gWS10dW5udXMvQnVzaW5l c3MgSUQ6IDA2MTU1MjEtNC4gS290aXBhaWtrYS9Eb21pY2lsZTogSGVsc2lua2kK